JP2012232019A - Female connector, and connector - Google Patents

Abstract

It is possible to connect to various types of male connectors having different shapes and dimensions, and facilitate connection to the male connector.
A female connector connected to a male connector having a tubular portion through which a liquid material flows out, and includes an adapter 30 attached to an outer peripheral surface of the tubular portion, and a handle 50 mounted on the adapter. . The adapter includes an insertion portion 31 having an opening at one end thereof, and the insertion portion includes a first insertion portion 311 and a second insertion portion 312 in this order. In at least a part of the circumferential direction of the insertion portion, the distance from the central axis 20a of the adapter to the outer peripheral surface of the first insertion portion is larger than the distance from the central axis of the adapter to the outer peripheral surface of the second insertion portion. The outer peripheral surface of the insertion portion includes a step surface 313, and the handle includes a step surface contact portion 57 that contacts the step surface.
[Selection] Figure 1

Description

  The present invention relates to a female connector connected to a male connector through which a liquid material flows out. Moreover, this invention relates to the infusion solution containing the connector which consists of a male connector and a female connector, and a female connector.

  Enteral nutrition therapy and parenteral nutrition therapy are known as methods for administering nutrition and drugs to patients regardless of oral administration. In enteral nutrition therapy, a tube passed from the patient's nasal cavity to the stomach or duodenum (generally called a “nasal tube”) or a gastric fistula formed on the patient's abdomen (percutaneous endoscopic treatment). A liquid (generally referred to as “enteral nutrition”) such as a nutrient, liquid food, or drug is administered via a tube (commonly referred to as “PEG tube”) inserted in a “Gastrostomy”. In parenteral nutrition therapy, a liquid (generally referred to as “infusion”) containing nutritional components such as glucose and drug components is administered via an infusion line inserted into a patient's vein.

  In enteral nutrition therapy and parenteral nutrition therapy, a liquid substance to be administered to a patient is stored in a medical container. A male connector through which a liquid material flows out is provided at the lower end of the medical container. The male connector of the medical container and the nasal tube, PEG tube, or infusion line connected to the patient are connected by an infusion set. The infusion set includes a flexible tube and the like, and a female connector connected to a male connector provided in the medical container is provided at the upstream end thereof.

  Regarding the connection between the male connector and the female connector, the connected male connector and the female connector do not separate even when a tensile force is applied, and the male connector can be used even if pressure is applied to the liquid. It is desired to have basic characteristics such as “pressure resistance” that prevents liquid material from leaking out from the connection portion between the connector and the female connector. In addition to these basic characteristics, it is desirable to have “easy insertion” that a male connector can be easily inserted into a female connector.

  There is no standard for the tubular portion inserted into the female connector of the male connector, and there are various male connectors having different shapes and dimensions of the outer peripheral surface of the tubular portion and are actually used. A highly versatile female connector having the above-described tensile characteristics, pressure resistance characteristics, and ease of insertion with respect to such various male connectors is desired.

  Patent Document 1 describes a female connector 910 having an adapter 920 into which a tubular portion 902 of a male connector 900 is inserted and a handle 930 into which the adapter 920 is inserted, as shown in FIG. . A flexible tube 927 constituting an infusion set is connected to the lower end of the adapter 920. The adapter 920 is made of a material having flexibility and elasticity. On the other hand, the handle 930 is made of a material having higher rigidity than the adapter 920. A flange portion 922 that protrudes outward is formed at the opening end of the adapter 920 on the side where the tubular portion 902 of the male connector 900 is inserted. A flange holding portion 932 is provided on the inner peripheral surface of the handle 930.

  In order to connect the female connector 910 to the male connector 900, the outer peripheral surface of the handle 930 is held with two fingers, and the tubular portion 902 is inserted into the adapter 920. The force (pushing force) in the direction of the arrow 939 (direction toward the male connector 900) applied to the handle 930 is transmitted to the flange portion 922 of the adapter 920 via the flange holding portion 932. Since the flange portion 922 is formed at the open end of the adapter 920, the adapter 920 does not buckle when the tubular portion 902 is inserted into the adapter 920. Further, since the diametric force applied to the handle 930 when the handle 930 is gripped does not act on the adapter 920, the gripping force does not increase the frictional force between the adapter 920 and the tubular portion 902. . Therefore, this female connector 910 has good ease of insertion with respect to the male connector 900.

  The adapter 920 can be appropriately elastically deformed according to the shape and dimensions of the outer peripheral surface of the tubular portion 902. Therefore, since the adapter 920 is in close contact with the outer peripheral surface of the tubular portion 902 regardless of the shape and size of the outer peripheral surface of the tubular portion 902, it has good tensile characteristics and pressure resistance characteristics with respect to various male connectors. .

International Publication No. 2008/152871 Pamphlet

  In the conventional female connector 910 described above, a flexible adapter 920 is inserted into an annular handle 930 that can be regarded as a substantially rigid body. Accordingly, when an attempt is made to insert the tubular portion 902 having a larger outer diameter into the adapter 920, the handle 930 restricts the diameter of the adapter 920 from being increased by the insertion of the tubular portion 902. Further, the insertion of the tubular portion 902 causes the adapter 920 to extend along the insertion direction of the tubular portion 902, the inner diameter of the adapter 920 becomes slightly small, and it becomes difficult to insert the tubular body 902 into the adapter 920. Therefore, there exists a subject that it is difficult to connect the male connector which has a larger diameter tubular part, and the conventional female connector.

  An object of the present invention is to solve the above-described problems of conventional female connectors and to provide a female connector that can be easily connected to a male connector having a larger-diameter tubular portion.

The female connector of the present invention is a female connector connected to a male connector having a tubular portion through which a liquid material flows out,
Including an adapter attached to the outer peripheral surface of the tubular portion, and a handle externally mounted on the adapter,
The adapter is
An insertion part having an opening at one end thereof;
A proximal end disposed farther from the opening than the insertion portion;
A flange portion provided at or near the opening side end of the insertion portion so as to protrude outward from the outer peripheral surface of the insertion portion,
The insertion part includes a first insertion part and a second insertion part in this order from the opening side toward the base end part side,
In at least a part of the circumferential direction of the insertion portion, the distance from the central axis of the adapter to the outer peripheral surface of the first insertion portion is larger than the distance from the central axis of the adapter to the outer peripheral surface of the second insertion portion. By being large, the outer peripheral surface of the insertion portion includes a step surface,
The handle is
A flange holding part that holds the flange part in contact with the surface of the flange part opposite to the opening;
A step surface abutting portion formed on an inner peripheral surface facing the central axis of the handle and contacting a surface of the step surface opposite to the opening;

  The connector of the present invention is a connector composed of a male connector having a tubular portion through which a liquid material flows out and a female connector connected to the male connector, wherein the female connector is the female connector of the present invention. Type connector.

  The infusion set of the present invention includes the female connector of the present invention and a tube connected to the female connector.

  In the female connector according to the present invention, the outer peripheral surface of the insertion portion of the adapter includes the step surface, and the handle includes a step surface abutting portion in contact with the step surface. Therefore, extension of the adapter (first insertion portion) accompanying insertion of the tubular portion of the male connector can be suppressed, and a force (pushing force) directed toward the male connector applied to the handle is applied to the first insertion portion. Can communicate effectively. Therefore, according to the present invention, the insertability of the tubular portion into the insertion portion is improved. For example, the male connector having a larger-diameter tubular portion that could not be connected with the conventional female connector shown in FIG. A highly versatile female connector can be realized.

1A is a perspective view of a female connector according to an embodiment of the present invention, FIG. 1B is a sectional view taken along line 1B-1B of FIG. 1A, and FIG. 1C is a partially enlarged view of FIG. 1B. FIG. 2 is a perspective view of an adapter constituting the female connector according to the embodiment of the present invention. 3A is a plan view of the adapter shown in FIG. 2, FIG. 3B is a side view thereof, and FIG. 3C is a cross-sectional view of the adapter taken along line 3C-3C in FIG. 3A. 4A is a perspective view of the handle constituting the female connector according to the embodiment of the present invention as seen from above, and FIG. 4B is a perspective view as seen from below. 5A is a plan view of the handle shown in FIG. 4, and FIG. 5B is a side view thereof. 6A is a bottom view of the handle shown in FIG. 4, and FIG. 6B is a cross-sectional view of the handle along line 5D-5D of FIG. 5A. FIG. 7 is a perspective view of an example of a male connector. 8A is a side view of the female connector according to one embodiment of the present invention and the male connector shown in FIG. 7 just before being connected, and FIG. 8B is a cross-sectional view thereof. 9A is a side view showing a state in which the female connector according to one embodiment of the present invention and the male connector shown in FIG. 7 are connected, and FIG. 9B is a cross-sectional view thereof. FIG. 10 is a perspective view of another example of the male connector. FIG. 11 is a cross-sectional view showing a state where the female connector according to the embodiment of the present invention and the male connector shown in FIG. 10 are connected. FIG. 12 is a cross-sectional view of a male connector and a conventional female connector connected to the male connector.

  In a preferred example of the female connector according to the present invention, the first insertion portion includes a rib protruding outward in the outer peripheral surface thereof and extending along the longitudinal direction of the adapter, and the end surface of the rib on the second insertion portion side is a step. Surface. In this case, along with the insertion of the tubular portion of the male connector, it is possible to achieve both the suppression of the extension in the longitudinal direction of the first insertion portion and the facilitation of the elastic compression deformation in the radial direction. This is preferable because the ease of insertion into the insertion portion is improved.

  In a preferred example of the female connector according to the present invention, the stepped surface abutting portion is an annular rib protruding inward from the inner peripheral surface facing the central axis of the handle. It is preferable that the stepped surface contact portion is an annular rib because the degree of freedom in selecting the shape of the stepped surface is increased. In addition, since the contact area between the step surface and the step surface contact portion can be set large, it is preferable because the pushing force applied to the handle can be more effectively transmitted to the adapter.

  In an example of the female connector of the present invention, at least the end side of the handle close to the opening of the adapter has a double tube structure in which large and small tube portions are concentrically arranged. Assuming that the inner tube portion is the first tube portion and the outer tube portion is the second tube portion, the first tube portion includes a flange holding portion and a step surface abutting portion, and the step of the first tube portion. A plurality of slits that divide the first tube portion into a plurality of portions in the circumferential direction are formed in an upper portion of the surface contact portion. An engaging portion that can engage with the male connector is formed on the inner peripheral surface of the second cylindrical portion facing the central axis of the handle. Therefore, when a pressing force is applied in the radial direction of the first tube portion from the central axis by inserting the tubular portion into the first tube portion, the opening diameter of the first tube portion can be increased. On the other hand, the opening diameter of the second cylinder portion does not increase even if the opening diameter of the first cylinder portion increases. An engaging portion that can engage with the male connector is provided in the second cylindrical portion. Therefore, for example, compared with the case where the engaging portion is provided in the first tube portion in which the slit is formed, the handle and the male connector can be reliably engaged, and the engagement is not easily released. preferable.

  In a preferred example of the female connector according to the present invention, the handle includes a pair of grips at positions facing each other on the outer peripheral surface thereof. When the handle is viewed along a direction parallel to the central axis thereof, a pair of flanges each formed with the engaging portion are arranged on the long axis of the outer peripheral surface of the handle perpendicular to the central axis. The pair of gripping portions are disposed on the short axis of the outer peripheral surface of the handle orthogonal to the central axis and the long axis. In this case, since the position of the engaging portion of the female connector can be easily recognized from the shape of the outer peripheral surface of the handle, the engaging operation with respect to the male connector can be performed efficiently.

  In a preferred example of the female connector according to the present invention, a portion of the outer peripheral surface of the handle corresponding to the pair of gripping portions is adjacent to a portion of the handle having a double cylinder structure, Is also recessed in the plane direction including the central axis and the long axis of the handle. Therefore, the outer dimension of the handle at the pair of gripping portions is smaller than the outer dimension of the handle at the pair of collars provided on the long axis. Therefore, when gripping the handle, the operator can grip the pair of gripping portions between the thumb and the index finger very naturally.

  In a preferred example of the female connector of the present invention, the inner peripheral surface of the adapter includes a first region, a second region, and a third region in this order from the opening side to the base end side. The inner diameters of the first region, the second region, and the third region are smaller in this order. By gradually reducing the inner diameter of the adapter in this way, the inner peripheral surface of the adapter and the outer peripheral surface of the tubular portion can be used in any region even if the shape and dimensions of the outer peripheral surface of the tubular portion of the male connector are variously different. Can be brought into close contact with each other. Therefore, regardless of the specification of the tubular part of the male connector, the tensile characteristics and pressure resistance characteristics when connected to the male connector are improved.

  In a preferred example of the female connector according to the present invention, an annular protrusion that is in contact with the outer peripheral surface of the tubular portion of the male connector and can be elastically deformed at the boundary region between the first region and the second region of the inner peripheral surface of the adapter. Is formed. Then, the stepped surface of the outer peripheral surface of the adapter is formed on the outer peripheral surface near the annular protrusion, which is lower than the annular protrusion (closer to the base end than the annular protrusion). In this case, the force (pushing force) directed toward the male connector applied to the handle can be effectively transmitted to the first insertion portion via the step surface contact portion.

  Below, this invention is demonstrated in detail, showing suitable embodiment. However, the present invention is not limited to the following embodiments. For convenience of explanation, the drawings referred to in the following description show only the main members necessary for explaining the present invention in a simplified manner among the constituent members of the embodiment of the present invention. Therefore, the present invention can include any member not shown in the following drawings.

  FIG. 1A is a perspective view of a female connector 20 according to an embodiment of the present invention. The female connector 20 of the present embodiment includes an adapter 30 into which a tubular portion of a male connector is inserted, and an annular handle 50 that is sheathed on the adapter 30. Reference numeral 20 a is the central axis of the female connector 20, which is also the central axis of the adapter 30 and the central axis of the handle 50. FIG. 1B is a cross-sectional view of the female connector 20 along a plane including the line 1B-1B of FIG. 1A and including the central axis 20a. For convenience of the following description, the upper side (male connector side) of the paper surface of FIGS. 1A and 1B is the “upper” side of the female connector 20, and the lower side of the paper surface of FIGS. 1A and 1B (what is a male connector? The opposite side is called the “lower” side of the female connector 20.

(adapter)
2 is a perspective view of the adapter 30, FIG. 3A is a plan view thereof, FIG. 3B is a side view thereof, and FIG. 3C is a cross-sectional view taken along line 3C-3C of FIG. 3A.

  As shown in FIGS. 1A to 3C, the adapter 30 has a cylindrical shape as a whole in which a flow path through which a liquid material flows is formed along the central axis 20a. The tubular portion 108 of the male connector 100 (see FIG. 7 and the like) is inserted from the upper opening of the adapter 30. The part of the adapter 30 into which the tubular part of the male connector is inserted is called an insertion part 31. A portion of the adapter 30 on the opposite side (lower side) from the insertion portion 31 is a base end portion 37 into which a tube 39 (see FIGS. 8 and 9) having the flexibility of a nutrition set is inserted and fixed.

  The adapter 30 is made of a material having flexibility and elasticity, and is not particularly limited. For example, PBD (polybutadiene), PVC (polyvinyl chloride resin), ABS (acryl-butadiene-styrene copolymer), polyamide resin It can be produced by integral molding using a thermoplastic resin such as EVA (ethylene-vinyl acetate copolymer), polyurethane resin, natural rubber, synthetic rubber or the like.

  A flange portion 33 protruding outward is formed on the outer peripheral surface of the opening edge of the adapter 30 on the insertion portion 31 side. In the present embodiment, the flange portion 33 is continuous with the outer peripheral surface of the insertion portion 31 in the circumferential direction, but may be divided into two or more in the circumferential direction. In the present embodiment, the flange portion 33 is provided at the upper end (end on the opening side) of the adapter 30, but is provided in the vicinity of the upper end of the adapter 30, that is, at a position slightly away from the upper end. May be. An annular groove 34 (see FIG. 1B and FIG. 3C) along the circumferential direction is formed on the surface of the flange portion 33 on the base end portion 37 side.

  A plurality (four in this embodiment) of ribs 35 projecting outwardly extend in the vertical direction on the outer peripheral surface of the region below the flange portion 33 of the insertion portion 31. Of the portion below the flange portion 33 of the insertion portion 31, the portion having the rib 35 is referred to as a first insertion portion 311 and the remaining portion is referred to as a second insertion portion 312 (see FIG. 3C). The distance from the central axis 20a of the adapter 30 to the outer peripheral surface of the first insertion portion 311 in the portion where the rib 35 of the first insertion portion 311 is formed is the outer peripheral surface of the second insertion portion 312 from the central axis 20a of the adapter 30. Longer than the distance. Therefore, the outer peripheral surface of the adapter 30 includes a step surface 313 in the boundary region between the first insertion portion 311 and the second insertion portion 312. The step surface 313 is in contact with a step surface contact portion 57 (see FIG. 1C and the like) of the handle 50 described in detail later. The plurality of ribs 35 are arranged at equiangular intervals with respect to the central axis 20a. The outer diameter of the adapter 30 at the top of the rib 35 is smaller than the outer diameter of the adapter 30 at the flange portion 33. The number of ribs 35 is not limited to four, and may be smaller or larger.

  When the tubular body 108 (see FIG. 7) is inserted into the insertion portion 31, the insertion portion 31 moves in the vertical direction (the insertion direction of the tubular body 108) due to friction between the outer peripheral surface of the tubular body 108 and the inner peripheral surface of the insertion portion 31. ). When the insertion portion 31 extends in the vertical direction, the inner diameter of the insertion portion 31 is slightly reduced, and it becomes difficult to insert the tubular body 108 into the insertion portion 31. In this embodiment, since the outer peripheral surface of the adapter 30 includes the step surface 313 that contacts the step surface contact portion 57 (see FIG. 1C and the like), the first insertion portion disposed above the step surface 313. About 311, it is suppressed that it extends to the up-down direction with the press injection in the insertion part 31 of the tubular part 108. FIG. The step surface 313 preferably includes a flat surface in contact with the step surface contact portion 57 because it is easy to ensure a large contact area. However, the step surface 313 is stepped with the connection of the male connector to the female connector 20. A plane parallel to a plane orthogonal to the central axis 20a of the adapter 30 is preferable because the sliding down from the surface abutting portion 57 is suppressed, and the surface is inclined from the inner peripheral surface of the adapter 30 toward the central axis 20a of the adapter 30. More preferably, the surface is parallel to a plane inclined upward. Moreover, the 1st insertion part 311 has the part 36 (refer FIG. 3B) whose thickness is relatively thinner than the part which has the rib 35 in the circumferential direction both sides of each rib 35 by including the some rib 35. As shown in FIG. . Therefore, coupled with the suppression of the vertical extension of the first insertion portion 311 and the reduction in the inner diameter of the insertion portion 31, for example, the thickness of the first insertion portion 311 is substantially constant along the circumferential direction. The first insertion portion 311 in this embodiment is more easily expanded and / or elastically deformed in the radial direction than the other adapters equal to the portion having the ribs 35, and into the insertion portion 31 of the tubular portion 108. The ease of insertion is high.

  In the present embodiment, since the end surface of the rib 35 on the second insertion portion 312 side is the step surface 313, when the adapter 30 is viewed from below along the direction parallel to the central axis 20a, the step surface 313 is The adapter 30 is provided so as to be discontinuous in the circumferential direction. However, the stepped surface 313 may be, for example, an annular continuous surface formed by the outer diameter of the first insertion portion 311 being larger than the outer diameter of the second insertion portion 312 or the annular continuous surface. And a surface composed of both ends of the rib 35 on the second insertion portion 312 side.

  The inner peripheral surface of the adapter 30 includes a first region 41, a second region 42, and a third region 43 in this order from the upper side to the lower side. The inner diameter of the adapter 30 is smaller in the order of the first region 41, the second region 42, and the third region 43. By gradually reducing the inner diameter of the adapter 30 in this way, the inner peripheral surface of the adapter 30 and the tubular portion of the tubular portion of the male connector can be different in any region even if the shape and size of the outer peripheral surface of the tubular portion of the male connector are different. Since the outer peripheral surface can be brought into close contact with each other, the tensile characteristics and pressure resistance characteristics when connected to the male connector are improved regardless of the specification of the tubular portion of the male connector.

  Each of the first region 41, the second region 42, and the third region 43 is a cylindrical surface having a constant inner diameter in the direction of the central axis 20 a or a tapered surface having a smaller inner diameter as it approaches the base end portion 37. In particular, the first region 41 (and also the second region 42 in addition to this) is preferably a tapered surface whose inner diameter decreases as the base end portion 37 is approached. Thus, when the tubular portion of the male connector is inserted into the female connector, the first region 41 (and further the second region 42), which is a tapered surface, guides the tubular portion. The central axis of the part can be easily aligned with the central axis 20 a of the adapter 30. As a result, the adhesion between the inner peripheral surface of the adapter 30 and the outer peripheral surface of the tubular portion is improved, so that the pressure resistance characteristics when connected to the male connector are improved. In the example shown in FIG. 9B, the inner peripheral surface of the adapter 30 and the outer peripheral surface of the tubular portion 108 are completely in close contact with each other in the second region 42.

  As shown in FIG. 3C, first ribs 46 and second ribs 47 are formed in the first region 41. Further, a third rib 48 is formed in the boundary region between the first region 41 and the second region 42. The first, second, and third ribs 46, 47, and 48 are annular protrusions that protrude in the direction of the central axis 20a and are continuous in the circumferential direction. When the tubular portion of the male connector is inserted into the adapter 30, at least one of the first, second, and third ribs 46, 47, and 48 abuts on the outer peripheral surface of the tubular portion and is appropriately elastically compressed and deformed to appropriately deform the tubular portion. It adheres locally to the outer peripheral surface. As a result, the pressure resistance characteristics when connected to the male connector are further improved. When a groove extending in the circumferential direction is formed on the outer peripheral surface of the tubular portion, at least one of the first, second, and third ribs 46, 47, and 48 is fitted into the groove. As a result, the tensile properties are further improved.

  The stepped surface 313 is preferably disposed below the first region 41 in the vertical direction of the central axis 20a from the viewpoint of improving the ease of insertion, is below the third rib 48, and is third. It is preferable to be disposed in the vicinity of the rib 48. That is, in the boundary region between the first region 41 and the second region 42 on the inner peripheral surface of the adapter, the outer peripheral surface of the tubular portion of the male connector is brought into contact with the outer peripheral surface of the tubular portion by being appropriately elastically compressed and deformed. When a rib (for example, an annular protrusion) that can be in close contact is formed, a step is formed on the outer peripheral surface of the adapter 30 below the rib (closer to the base end than the rib) and in the vicinity of the rib. When the surface 313 is formed, the force (pushing force) directed toward the male connector applied to the handle is effectively applied to the first insertion portion 311 via the step surface abutting portion 57 (see FIG. 1B). Can tell and is preferable. When a plurality of ribs are formed on the inner surface of the adapter 30, the third rib 48 formed in the boundary region between the first region 41 and the second region 42 is the most proximal portion 37 of the plurality of ribs. It is preferable that the rib is disposed in the vicinity of.

(handle)
4A is a perspective view of the handle 50 as seen from above, FIG. 4B is a perspective view as seen from below, FIG. 5A is a plan view thereof, FIG. 5B is a side view thereof, FIG. 6A is a bottom view thereof, and FIG. FIG. 5 is a cross-sectional view of the handle 50 taken along line 5D-5D. Of the both ends in the longitudinal direction along the center axis 20a of the handle 50, the end portion side close to the opening of the adapter 30 has a double cylinder structure in which large and small cylinder portions are concentrically arranged. The central axes of the two large and small tube portions coincide with each other. The inner cylinder part is referred to as a first cylinder part 501, and the outer cylinder part is referred to as a second cylinder part 502. The handle 50 has a shape that coincides with the shape before rotation when the handle 50 is rotated by 180 ° around the central axis 20a. A plurality of slits 71 are formed in the first tube portion 501 downward from the upper opening end. Therefore, the outer peripheral surface in the part in which the slit 71 of the 1st cylinder part 501 is formed is discontinuous in the circumferential direction. On the other hand, the outer peripheral surface of the second cylindrical portion 502 is continuous in the circumferential direction.

  The handle 50 is made of a material having higher rigidity than the adapter 30 and is not particularly limited. For example, the handle 50 can be manufactured by integral molding using polypropylene resin, polycarbonate, polyacetal, PVC, PBD, or the like.

  As shown in FIG. 4A, the inner portion (portion close to the central axis 20a) of the upper end surface of the first tube portion 501 is the surface opposite to the opening of the flange portion 33 (the surface facing the first tube portion 501). ) Is formed in the annular groove 34 (see FIG. 3C) formed in (), and protrudes upward. The ridges 52 extend along the circumferential direction. The outer portion 53 (the portion far from the center axis 20a) of the upper end surface of the first cylindrical portion 501 is adjacent to the groove 34 in the lower surface 38 of the flange portion 33 (the surface facing the first cylindrical portion 501 of the flange portion 33). And a surface 53 facing the surface (see FIGS. 1B and 3C). The surface 53 is in contact with the lower surface 38, or in contact with the lower surface 38 when the tubular portion of the male connector is inserted into the insertion portion 31, but not in contact with the lower surface 38. In the present embodiment, the upper end surface 55 of the first tube portion 501 including the ridge 52 and the surface 53 functions as a flange holding portion 55 that holds the flange portion 33 in contact with the surface opposite to the opening of the flange portion 33. To do.

  A step surface abutting portion 57 is formed on the inner peripheral surface 56 (see FIG. 6B) facing the central axis 20 a of the first cylinder portion 501. The step surface contact portion 57 is, for example, an annular rib that protrudes inward (in the direction of the central axis 20a) from the inner peripheral surface 56. The step surface contact portion 57 has a surface 58 (see FIGS. 1C and 5A) that contacts the step surface 313 (see FIG. 3C) of the adapter 30. It is preferable that the surface 58 of the step surface contact portion 57 that contacts the step surface 313 of the adapter 30 includes a flat surface that contacts the step surface 313 because a large contact area can be easily secured. From the reason that the stepped surface 313 is prevented from slipping off from the stepped surface abutting portion 57 with connection to 20, for example, a surface parallel to a plane orthogonal to the central axis 20a is preferable, like the stepped surface 313. It is more preferable that the surface is parallel to a plane inclined obliquely upward from the inner peripheral surface of the first cylindrical portion 501 toward the central axis 20a. The step surface abutting portion 57 is formed closer to the proximal end portion 37 of the adapter 30 than the flange holding portion 55 and is disposed above the proximal end portion 37.

  As shown in FIG. 4A, FIG. 4B, FIG. 6B, etc., the first cylinder portion 501 is surrounded by the upper portion 58a of the first cylinder portion 501 from the stepped surface contact portion 57 downward from the upper opening end. A plurality of slits 71 that are divided into a plurality of directions are formed. Therefore, the upper portion 58a includes a plurality of (four in this embodiment) elastic pieces 64 (see FIG. 6B) that are cantilevered. The connecting portion 65 that connects each elastic piece 64 and the stepped surface contact portion 57 can be elastically bent and deformed by an external force. Therefore, when the tubular portion of the male connector is inserted into the adapter 30, the connecting portion 65 is elastically bent and deformed, and the interval between the slits 71 is increased. As a result, the opening diameter on the upper side of the first cylindrical portion 501 is enlarged, and the first insertion portion 311 (see FIG. 3C) of the adapter 30 is allowed to extend in the radial direction.

  Thus, since the opening diameter of the 1st cylinder part 501 can be expanded, the male connector provided with the tubular part which has a larger outer diameter which cannot be connected with the conventional female connector 910 shown in FIG. You can also connect to. Therefore, the female connector of the present invention has versatility that can be connected to various known male connectors.

  The vertical dimension (length) and the circumferential width of the slit 71 formed in the first cylindrical portion 501 can be arbitrarily set. In general, the longer the slit 71 is, the larger the amount of enlargement of the opening diameter of the upper side of the first cylindrical portion 501 is, and the first cylindrical portion 501 can be elastically deformed with a smaller force. Decreases. Therefore, from the viewpoint of improving the strength of the first tube portion 501, the first tube portion 501 is closer to the upper portion 58a than the step surface contact portion 57 (closer to the flange portion 33 of the adapter 30 than the step surface contact portion 57). The thickness of the portion) is lower than the thickness of the lower portion 58b of the step surface contact portion 57 (the portion farther from the flange portion 33 than the step surface contact portion 57, see FIGS. 4A, 4B, and 6B). It is preferable that the thickness is too thick.

  As shown in FIG. 1A, FIG. 1B, FIG. 4A, FIG. 5A, FIG. 5B, and FIG. 6B, a pair of eaves 60 is provided on the upper side of the upper end surface of the first tube portion 501 of the second tube portion 502. Is formed. An inner peripheral surface 61 (see FIG. 4A) facing the central axis 20a of the flange 60 forms a part of a cylindrical surface centered on the central axis 20a. A convex portion 62 and a stopper portion 63 are formed on the inner peripheral surface 61 so as to protrude toward the central axis 20a. The convex portion 62 extends in the circumferential direction along the upper edge of the inner peripheral surface 61. The stopper portion 63 extends downward from the right end of the convex portion 62 when viewed from the central axis 20a. The distance between the convex portions 62 facing each other and the distance between the stopper portions 63 facing each other are larger than the outer diameter of the flange portion 33 of the adapter 30 and the outer diameter of the first cylindrical portion 501.

  As shown in FIGS. 5A and 6A, when the handle 50 is viewed along a direction parallel to the central axis 20a, the outer peripheral surface of the handle 50 has a long axis 59a and a short axis 59b orthogonal to each other. Have The long axis 59a is an axis orthogonal to the central axis 20a and parallel to the direction in which the outer dimension of the handle 50 is maximized. The pair of flange portions 60 and the pair of convex portions 62 formed on the inner peripheral surface 61 are disposed on the long axis 59a. In this way, the outer peripheral surface of the handle 50 is a non-cylindrical surface, and the pair of convex portions 62 are disposed on the long axis 59a, so that the position of the pair of convex portions 62 around the central axis 20a is the outer peripheral surface of the handle 50. It can be recognized from the shape. Therefore, as will be described later, when the convex portion 62 is engaged with the engaging claw 105 (see FIG. 7 described later) of the male connector, it is easy to align the handle 50 around the central axis 20a with respect to the male connector. Thus, the engagement work can be performed efficiently.

  As shown in FIGS. 4A to 6B, below the second cylindrical portion 502, the outer surface of the flange portion 60 (the surface opposite to the central axis 20 a of the flange portion 60) is connected to the central axis 20 a. There is an extension wall 503 having an outer surface extending substantially in parallel and downward, but in a region between the pair of flange portions 60 along the circumferential direction, the first cylinder portion 501 is located below the double structure portion. The outer peripheral surface 54 (see FIG. 6A) is exposed. As shown in FIGS. 5A and 4B, the extension wall 503 and the first tube portion 501 are connected by a bridging portion 58c. The bridging portion 58c extends outward from the outer peripheral surface of the first cylindrical portion 501 (lower portion 58b) below the lower end of each slit 71 (the end close to the stepped surface contact surface portion 57). It has reached 503. The bridging portion 58c has concave surfaces 54a and 54b that connect the lower portion of the outer peripheral surface 54 of the exposed first cylindrical portion 501 with respect to the slit 71 and the outer surface of the extension wall 503 (also in FIG. 5B). reference). In this embodiment, since there are four slits, there are also four bridging portions 58c and four concave surfaces. Since the outer peripheral surface of the handle 50 is shaped as described above, the operator can grip the exposed outer peripheral surface 54 of the first tube portion 501 as a pair of grip portions 504 when gripping the handle 50. In the present embodiment, the pair of grip portions 504 are disposed at positions facing each other on the outer peripheral surface of the handle 50. As can be understood from FIG. 6A, when the handle 50 is viewed along a direction parallel to the central axis 20a, the pair of grip portions 504 are disposed on the short axis 59b. The outer surfaces of the pair of gripping portions 504 form a part of a cylindrical surface centered on the central axis 20a.

  As can be understood from FIG. 4B, the exposed outer peripheral surface 54 of the first cylindrical portion 501 corresponding to the pair of gripping portions 504 in the outer peripheral surface of the handle 50 is a portion of the double cylindrical structure of the handle 50. Adjacent to the underside. Therefore, the lower part of the handle 50 is recessed in the direction of the central axis 20 a of the handle 50 than the part of the double cylinder structure. Therefore, the outer dimension of the handle 50 at the pair of gripping portions 504 provided on the short shaft 59b and recessed more concavely than the portion of the double cylinder structure is the same as that of the pair of flange portions 60 provided on the long shaft 59a. The outer dimension of the handle 50 and the outer dimension of the handle 50 at the portion of the double cylinder structure provided on the short shaft 59b are smaller (see FIGS. 4B and 6A). Since the outer peripheral surface of the handle 50 is shaped as described above, the operator can grip the pair of gripping portions 504 between the thumb and the index finger very naturally, so that the operability of the female connector is good. In addition, the ease of insertion of the male connector is improved.

  Of the concave surfaces 54a and 54b arranged adjacent to each gripping portion 504, the concave surface 54a adjacent to the right side of the gripping portion 504 is referred to as a first concave surface 54a, and the concave surface 54b adjacent to the left side is referred to as a second concave surface 54b (FIG. 4B). See). The pair of first concave surfaces 54a and the pair of second concave surfaces 54b are each arranged on a straight line orthogonal to the central axis 20a. As shown in FIG. 6A, the continuous surface including the outer peripheral surface 54, the first concave surface 54a, and the second concave surface 54b of the exposed first cylindrical portion 501 has a central axis 20a and a long axis 59a with respect to the double cylindrical structure. It is recessed in a concave shape in the direction of the plane including.

  As can be understood from FIG. 6A, the first concave surface 54 a and the second concave surface 54 b are formed in a region between the long axis 59 a and the short axis 59 b on the outer peripheral surface of the handle 50. Accordingly, when the handle 50 is rotated around the central axis 20a in the clockwise direction when viewed from below, for example, a rotational torque can be easily applied to the handle 50 by bringing the thumb and index finger into contact with the pair of first concave surfaces 54a. . On the contrary, when the handle 50 is rotated counterclockwise around the central axis 20a when viewed from below, for example, the handle 50 is brought into contact with the pair of second concave surfaces 54b by bringing the thumb and index finger into contact with each other. It is easy to apply rotational torque to

  As shown in FIGS. 1A and 1B, the adapter 30 is inserted into the opening of the handle 50. The handle 50 is externally attached to the adapter 30 by moving the handle 50 relative to the adapter 30 from the end opposite to the opening of the adapter 30 along the direction of the central axis 20a of the adapter 30. ing. The flange portion 33 of the adapter 30 is disposed on the flange holding portion 55 of the handle 50. The handle 50 can move in the direction of the central axis 20 a with respect to the adapter 30 and can rotate around the adapter 30.

  However, as shown in FIG. 1B, the lower surface of the flange portion 33 of the adapter 30 contacts the flange holding portion 55 of the handle 50. Further, the ridge 52 of the flange holding portion 55 is fitted into the groove 34 formed on the lower surface of the flange portion 33. Thus, when the flange part 33 and the flange holding | maintenance part 55 engage, the adapter 30 cannot move below with respect to the handle | steering-wheel 50 any more.

  The ribs 35 (see FIG. 2 and the like) formed on the outer peripheral surface of the adapter 30 are preferably in contact with at least a part of the first cylindrical portion 501 (the inner peripheral surface in the figure. Thereby, the adapter 30 and the handle The rotational torque applied to the handle 50 is easily transmitted to the adapter 30 by the static friction force generated between the two.

  A method for connecting the female connector 20 of the present embodiment configured as described above to a male connector will be described below.

  FIG. 7 is a perspective view of an example of the male connector 100 as viewed from below. The male connector 100 includes a cap 102 connected to a port of a medical container, a pedestal 104 provided on the lower surface of the cap 102, and a tubular portion 108 erected at the center of the pedestal 104. Reference numeral 100 a is a central axis of the male connector 100.

  A female screw 103 (see FIGS. 8B and 9B) is formed on the inner peripheral surface of the cap 102 to be screwed with the male screw of the port of the medical container.

  The pedestal 104 is formed by projecting a part (center part) of a circular area at the center of the lower surface of the cap 102 downward. A pair of engaging claws 105 are formed on the outer peripheral surface of the pedestal 104 at symmetrical positions with respect to the central axis 100a. The engaging claw 105 protrudes in the radial direction with respect to the central axis 100a.

  A flow path (through hole) 109 through which a liquid material flows is formed in the tubular portion 108 along the central axis 100a. On the outer peripheral surface of the tubular portion 108, a tapered surface (conical frustum surface) whose outer diameter increases as it approaches the cap 102 is formed.

  The female connector 20 of the present embodiment and the male connector 100 shown in FIG. 7 are opposed to each other as shown in FIGS. 8A and 8B, and the tubular portion 108 of the male connector 100 is placed in the adapter 30 of the female connector 20. Insert into. The operator can hold the pair of holding portions 504 of the handle 50 of the female connector 20 with the thumb and index finger of one hand, and can hold the cap 102 of the male connector 100 with the thumb and index finger of the other hand.

  Since the lower surface of the flange portion 33 of the adapter 30 is held by the flange holding portion 53 of the handle 50 and the groove 34 of the flange portion 33 and the convex portion 52 of the flange holding portion 55 are engaged, the operator can During the operation of inserting the tubular portion 108, it is not necessary to touch the adapter 30 and only the handle 50 needs to be held.

  Since the ridge 52 of the flange holding portion 53 is fitted in the groove 34 of the flange portion 33, even if the flange portion 33 is deformed by the force applied during the operation of inserting the tubular portion 108 into the adapter 30, the flange portion 33. And the flange holding portion 55 are not easily disengaged.

  Since the flange portion 33 is formed at or near the upper end of the adapter 30, the adapter 30 is not buckled and deformed by a force applied during the operation of inserting the tubular portion 108 into the adapter 30.

  In addition to these, in the present embodiment, when the tubular portion 108 is inserted into the insertion portion 31 and a pressing force is applied in the radial direction of the first tube portion 501 from the central axis 20a, the magnitude of the pressing force is increased. Accordingly, the opening diameter of the first cylindrical portion 501 is increased. Therefore, the female connector 20 of the present embodiment has a good ease of insertion even for the male connector 100 including the tubular portion 108 having a larger outer diameter.

  After the tubular portion 108 is inserted into the adapter 30 until the flange portion 33 of the adapter 30 abuts or approaches the pedestal 104 of the male connector 100, the handle 50 is rotated clockwise when viewed from below with respect to the male connector 100. Rotate in the direction. Thereby, the engaging claw 105 formed on the outer peripheral surface of the pedestal 104 of the male connector 100, and the convex portion 62 (see FIG. 4A) formed as an engaging portion on the collar portion 60 (see FIG. 4A) of the handle 50. And engage. If the engaging claw 105 of the male connector 100 is rotated until it abuts against the stopper portion 63 (see FIG. 4A) of the handle 50, the engaging claw 105 and the convex portion 62 can be engaged deeply. Even if the opening diameter of the first cylindrical portion 501 is increased with the insertion of the tubular portion 108 into the adapter 30, the opening diameter on the male connector side of the second cylindrical portion 502 is not increased. That is, the distance between the pair of engaging portions provided in the second cylindrical portion 502 is not substantially changed or not changed before, during, and after the connection. Therefore, for example, the handle 50 and the male connector 100 can be reliably engaged and the engagement is less than in the case where the engaging portion is provided in the first cylindrical portion 501 in which the slit 71 is formed. The connection state between the female connector 20 of the present embodiment and the male connector 100 can be stably maintained.

  Furthermore, in this embodiment, since the step surface 313 of the adapter 30 is in contact with the surface 58 of the step surface contact portion 57 of the handle 50, the first insertion portion of the adapter 30 associated with the insertion of the tubular portion 108 of the male connector 100. The extension of 311 is suppressed. Therefore, it is suppressed that it becomes difficult to insert the tubular body 108 into the adapter 30 by slightly reducing the inner diameter of the adapter 30 as the adapter 30 extends in the vertical direction. In addition, the force applied to the male connector 100 (pushing force) applied to the handle 50 can be effectively transmitted to the first insertion portion 311 via the step surface abutting portion 57.

  When the handle 50 is rotated, the thumb and index finger holding the grip portion 504 are moved to the first concave surface 54a adjacent to the grip portion 504, and for example, a rotational torque is applied to the pair of first concave surfaces 54a. To do. Thereby, a rotational torque can be easily applied to the handle 50. In addition, since the grip portion 504 and the first concave surface 54a are very close to each other, from the operation of gripping the grip portion 504 and inserting the tubular portion 108 into the adapter 30, the handle 50 is rotated to engage the engaging claw 105. It is possible to quickly shift to the operation of engaging the convex portion 62 (engagement portion). Thereby, a series of operations for connecting the female connector 20 and the male connector 100 can be performed efficiently.

  Even if a pressing force for rotating the handle 50 in the clockwise direction is applied to the pair of first concave surfaces 54a, the second tube portion 502 of the handle 50 is not elastically deformed by the pressing force. Therefore, the convex part 62 can be reliably engaged with the engaging claw 105.

  Thus, the female connector 20 and the male connector 100 can be connected as shown in FIGS. 9A and 9B. Since the adapter 30 has flexibility and elasticity, the adapter 30 expands and deforms according to the size and shape of the outer peripheral surface of the tubular portion 108 of the male connector 100, and adheres closely to the outer peripheral surface of the tubular portion 108 by its elastic recovery force. Therefore, the female connector 20 of this embodiment has the same tensile characteristics and pressure resistance as the conventional female connector shown in FIG.

  By engaging the convex portion 62 and the engaging claw 105, the tensile characteristics are further improved.

  Depending on the material of the adapter 30, the diameter of the adapter 30 may be increased by inserting the tubular portion 108. The diameter of the adapter 30 is increased because the rib 35 (see FIGS. 2 and 3B) formed on the outer peripheral surface of the adapter 30 is elastically deformed in the radial direction and / or the first cylindrical portion 501 of the handle 50 is deformed. The upper opening diameter is allowed to be elastically deformed so as to expand.

  The female connector 20 can be separated from the male connector 100 by performing the above operations in reverse. That is, the handle 50 is rotated counterclockwise with respect to the male connector 100 when viewed from below, and the engagement between the engagement claw 105 and the convex portion 62 is released. The handle 50 can be rotated by applying a rotational torque to the pair of second concave surfaces 54b. Thereby, a rotational torque can be easily applied to the handle 50. After releasing the engagement between the engaging claw 105 and the convex portion 62, the adapter 30 is extracted from the tubular portion 108 of the male connector 100.

  FIG. 10 is a perspective view of a male connector 200 different from the male connector 100 shown in FIG. 7 as viewed from below. 10, reference numeral 202 denotes a cap, 204 denotes a pedestal, and 208 denotes a tubular portion, which respectively correspond to the cap 102, the pedestal 104, and the tubular portion 108 of the male connector 100 shown in FIG.

  The male connector 200 of FIG. 10 differs from the male connector 100 of FIG. 7 in the following points. First, the outer peripheral surface of the tubular portion 208 of the male connector 200 is a tapered surface having a larger diameter than the tubular portion 108 of the male connector 100. Second, the engaging claw is not formed on the base 104 of the male connector 200.

  The method of connecting the female connector 20 of this embodiment to the male connector 200 is substantially the same as the method of connecting to the male connector 100 described above. That is, the pair of grips 504 of the handle 50 of the female connector 20 is gripped by the thumb and index finger of one hand, and the cap 202 of the male connector 200 is gripped by the thumb and index finger of the other hand. The tubular portion 208 of the mold connector 200 is inserted into the adapter 30 of the female connector 20.

  FIG. 11 is a cross-sectional view showing a state in which the female connector 20 and the male connector 200 of the present embodiment are connected.

  Since the outer diameter of the tubular portion 208 is larger than the outer diameter of the tubular portion 108 of the male connector 100 shown in FIG. 7, the first insertion portion 311 of the adapter 30 is more suitable than the case where the tubular portion 108 is inserted. The diameter has been greatly expanded. Due to this increased diameter of the adapter 30, the first cylindrical portion 501 of the handle 50 is elastically deformed so that the opening diameter on the upper side (male connector 200 side) is increased.

  The first cylinder portion 501 of the handle 50 of this embodiment can be elastically deformed so that the upper opening diameter is enlarged. The elastic deformation of the first cylindrical portion 501 of the handle 50 enables the diameter of the adapter 30 shown in FIG. Further, when the tubular portion 208 is inserted into the adapter 30, the extension of the adapter 30 (first insertion portion 311) accompanying the insertion of the tubular portion 208 of the male connector 200 can be suppressed, and the male added to the handle 50. A force (pushing force) directed toward the mold connector 200 can be effectively transmitted to the first insertion portion 311 of the adapter 30 via the step surface contact portion 57. Therefore, compared with the conventional female connector shown in FIG. 12 using the handle 930 that cannot be elastically deformed, the female connector 20 of the present embodiment has a male connector 200 including a tubular portion 208 having a larger outer diameter. Can also be easily connected.

  Therefore, the female connector 20 of the present embodiment has good ease of insertion even with respect to the male connector 200 including the tubular portion 208 having a larger outer diameter.

  The male connector 200 of FIG. 10 does not have the engaging claw 105 provided in the male connector 100 of FIG. Therefore, the handle 50 and the male connector 200 cannot be engaged using the convex portion 62. However, even in such a case, the adapter 30 expands and deforms according to the size and shape of the outer peripheral surface of the tubular portion 208, and adheres to the outer peripheral surface of the tubular portion 208 by its elastic recovery force.

  Therefore, the female connector 20 of the present embodiment has good tensile characteristics and pressure resistance characteristics even with respect to the male connector 200 including the tubular portion 208 having a larger outer diameter.

  As described above, the female connector 20 of the present embodiment has ease of insertion in addition to basic characteristics such as tensile characteristics and pressure resistance characteristics. Furthermore, since the handle 50 includes the stepped surface contact portion 57, the adapter 30 (first insertion portion 311) can be prevented from extending, and the force applied to the male connector 200 applied to the handle 50 ( The pushing force) can be effectively transmitted to the first insertion portion 311 of the adapter 30 through the step surface contact portion 57. Therefore, it can be connected to a male connector 200 having a tubular portion 208 having a larger outer diameter that cannot be connected by the conventional female connector 910 shown in FIG. 12, and the female connector of the present invention is well-known. It has versatility that can be connected to various male connectors.

  The above-described embodiment is merely an example. The present invention is not limited to the above embodiment, and can be changed as appropriate.

  For example, in the above-described embodiment, the step surface contact portion 57 is an annular rib having a surface 58 (see FIG. 1C) that faces the step surface 313 and is continuous in the circumferential direction, but is not limited thereto. When the step surface 313 has a surface that faces the step surface contact portion 57 and is continuous in the circumferential direction, the surface 58 of the step surface contact portion 57 that faces the step surface 313 is discontinuous in the circumferential direction. Good.

  For example, in the above-described embodiment, as the engagement structure for engaging the handle 50 and the male connector 100 (see FIG. 7), the protrusion 62 formed on the handle 50 and the engagement formed on the male connector 100 are used. However, the structure of the engagement structure is not limited to this. For example, various engagement structures described in Patent Document 1 described above may be used. Alternatively, the pair of flanges 60 can be omitted, that is, the engagement structure between the handle 50 and the male connector 100 can be omitted.

  In the handle 50 described above, the number of the slits 71 formed downward from the upper opening end of the first cylindrical portion 501 is four. However, the number of the slits 71 is not limited to this, and one or There may be two or more. It is preferable that the number of the first slits 71 is two or more because the amount of elastic deformation of the first cylindrical portion 501 can be increased. Moreover, the form in which the slit 71 is not formed in the 1st cylinder part 501 may be sufficient as the female connector of this invention. As long as the stepped surface 313 is provided on the outer surface of the adapter and the stepped surface contact portion 57 is provided on the handle 50, a force (pushing force) directed toward the male connector applied to the handle 50 is applied to the adapter 30. Since the female connector of the present invention can be effectively transmitted to the first insertion portion 311, the female connector of the present invention can be connected to various known male connectors rather than the conventional female connector 910 shown in FIG. 12. Versatile.

The shape of the outer peripheral surface of the handle 50 is not limited to the above embodiment. For example, the grip portion 504 and the first and second concave surface 54a, the shape of 54b can be arbitrarily changed.

  The configuration of the adapter 30 is not limited to the above embodiment.

  For example, the groove 34 formed on the lower surface of the flange portion 33 can be omitted. In this case, the ridge 52 formed on the flange holding portion 55 of the handle 50 can also be omitted.

  The rib 35 formed on the outer peripheral surface of the adapter 30 does not need to extend in the vertical direction as in the above-described embodiment as long as the adapter 30 includes a step surface that contacts the step surface contact portion 57. It may extend continuously or intermittently, or may extend continuously or intermittently in a spiral. Alternatively, it may be a dot-like protrusion.

  The shape of the inner peripheral surface of the adapter 30 is not limited to the above embodiment. The number of regions distinguished by the shape and diameter of the inner peripheral surface is not limited to three as in the above embodiment, and may be more or less than this. Further, the number of annular ribs formed on the inner peripheral surface is not limited to three as in the above embodiment, and may be more or less than this.

  Although there is no restriction | limiting in particular in the utilization field of this invention, For example, it can utilize as a female connector used when performing enteral nutrition therapy and parenteral nutrition therapy. In addition, it can also be used as a female connector used when handling liquid substances such as foods other than medical use.

20 female connector 20a female connector, adapter, and center axis of handle 30 adapter 31 insertion portion 311 first insertion portion 312 second insertion portion 313 stepped surface 33 flange portion 35 rib 37 base end portion 39 tube 41 first region 42 Second region 43 Third region 48 Ring-shaped protrusion (third rib)
50 Handle 55 Flange holding part 501 1st cylinder part 502 2nd cylinder part 504 Grasping part 54a 1st concave surface 54b 2nd concave surface 57 Step surface contact part 58a Upper part of the 1st cylinder part from the level surface contact part 58b 1st Lower part than step surface contact part of one cylinder part 58c Bridging part 59a Long axis of the outer peripheral surface of the handle 59b Short axis of the outer peripheral surface of the handle 60 Gutter part 62 Convex part (engaging part)
63 Stopper portion 71 Slit 100, 200 Male connector 105 Engaging claw 108, 208 Tubular portion

Claims (10)

A female connector connected to a male connector having a tubular portion through which a liquid material flows,
Including an adapter attached to the outer peripheral surface of the tubular portion, and a handle externally mounted on the adapter,
The adapter is
An insertion part having an opening at one end thereof;
A proximal end disposed farther from the opening than the insertion portion;
A flange portion provided at or near the opening side end of the insertion portion so as to protrude outward from the outer peripheral surface of the insertion portion,
The insertion part includes a first insertion part and a second insertion part in this order from the opening side toward the base end part side,
In at least a part of the circumferential direction of the insertion portion, the distance from the central axis of the adapter to the outer peripheral surface of the first insertion portion is larger than the distance from the central axis of the adapter to the outer peripheral surface of the second insertion portion. By being large, the outer peripheral surface of the insertion portion includes a step surface,
The handle is
A flange holding part that holds the flange part in contact with the surface of the flange part opposite to the opening;
A female connector comprising: a step surface abutting portion formed on an inner peripheral surface facing the central axis of the handle and contacting a surface of the step surface opposite to the opening. The first insertion portion includes a rib projecting outwardly and extending along a longitudinal direction of the adapter on an outer peripheral surface thereof,
The female connector according to claim 1, wherein an end surface of the rib on the second insertion portion side is the step surface.   3. The female connector according to claim 1, wherein the stepped surface contact portion is an annular rib that protrudes inward from an inner peripheral surface facing a central axis of the handle. At least the end side of the handle near the opening of the adapter has a double cylinder structure in which large and small cylinder parts are arranged concentrically,
When the inner cylindrical portion is a first cylindrical portion and the outer cylindrical portion is a second cylindrical portion,
The first tube portion includes the flange holding portion and the step surface contact portion,
A plurality of slits that divide the first tube portion into a plurality of portions in the circumferential direction are formed in an upper portion of the step portion of the first tube portion.
The engagement part which can be engaged with the said male connector is formed in the internal peripheral surface facing the center axis | shaft of the said handle | steering_wheel of the said 2nd cylinder part. Female connector. The handle includes a pair of gripping portions at positions facing each other on the outer peripheral surface thereof,
When the handle is viewed along a direction parallel to its central axis,
A pair of flanges each formed with the engaging portion are disposed on the long axis of the outer peripheral surface of the handle perpendicular to the central axis,
The female connector according to claim 4, wherein the pair of gripping portions are arranged on a short axis of an outer peripheral surface of the handle orthogonal to the central axis and the long axis.   A portion of the outer peripheral surface of the handle corresponding to the pair of gripping portions is adjacent to the portion of the double cylinder structure of the handle, and the center axis of the handle and the portion are more than the portion of the double cylinder structure. The female connector according to claim 5, wherein the female connector is recessed in a planar direction including a long axis.   The inner peripheral surface of the adapter includes a first region, a second region, and a third region in this order from the opening side toward the base end side, and the first region, the second region, and the The female connector according to any one of claims 1 to 6, wherein the inner diameter of the third region is smaller in this order. In the boundary region between the first region and the second region of the inner peripheral surface of the adapter, an annular protrusion is formed that can contact the outer peripheral surface of the tubular portion of the male connector and elastically compressively deform,
The female step connector according to claim 7, wherein the step surface is formed on an outer peripheral surface of the adapter below the annular protrusion and in the vicinity of the annular protrusion. A connector comprising a male connector having a tubular portion through which a liquid material flows out, and a female connector connected to the male connector,
The said female connector is a female connector as described in any one of Claims 1-8, The connection tool characterized by the above-mentioned. The female connector according to any one of claims 1 to 8,
An infusion set including a tube connected to the female connector.

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