JP2018183469A - Medical connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize a medical connector capable of reducing discomfort when touching the skin and improving operability. A medical connector includes a cylindrical connector connection portion 101 to which a pair of connectors are connected, a tube connection portion 102 provided on the proximal end side of the connector connection portion 101, and a connector connection portion 101. It includes a flange portion 103 provided at the base end, and a wing portion 104 projecting from both sides of the tube connecting portion 102 on the base end side of the flange portion 103. The flange portion 103 has an elliptical shape or an elliptical shape in a plane shape, the major diameter of the flange portion 103 is larger than the outer diameter of the lock ring of the paired connector, and the minor diameter of the flange portion 103 is the connector connection portion 101. It matches the outer diameter of the base end of. The wing portion 104 extends in the direction of the major axis of the flange portion 103, and the maximum width between the blades of the wing portion 104 is equal to or smaller than the major axis of the flange portion 103. [Selection diagram] Fig. 1

Description

  The present disclosure relates to a medical connector, and more particularly to a medical connector that can be used in enteral nutrition.

  When a medical practice is performed, an extracorporeal line may be connected to the patient in order to administer a drug, supplement nutrition, collect a sample, and perform dialysis. By providing a standardized luer connector on the extracorporeal line, it is possible to easily connect a container for a drug to be administered or a therapeutic device.

  On the other hand, depending on the medical condition, a plurality of extracorporeal lines may be connected to one patient. When the same standard luer connector is provided in a plurality of lines, there is a possibility that the container or the device is connected to the wrong line. Such misconnection is a big problem.

  In order to prevent erroneous connection of lines, it has been studied to change the shape of a connector provided in each line so that different lines cannot be connected to each other. For example, for nutritional use, ISO 80369-3 established a standard. According to this standard, a hard male connector having a lock ring around the tapered portion is provided at the proximal end of the enteral feeding catheter, and a female connector is provided at the distal end of the container side tube. Development of a connector that satisfies such a standard is also underway (see, for example, Patent Document 1).

Japanese Patent Laid-Open No. 2015-119837

  The connector of the enteral feeding catheter inserted into the nose is located near the face. Therefore, at the time of use, for example, the patient may turn over, and the female connector may touch the skin of the face and cause discomfort. In order to reduce patient discomfort, it is important to make the connector as small as possible within the range of the standard and to make the uncomfortable feeling as small as possible when touching the skin. On the other hand, in order to improve the operability of the connector and prevent a connection error or the like from occurring, it is important to make the connector easy to grip.

  The subject of this indication is enabling it to implement | achieve the medical connector which improved the operativity while reducing the discomfort at the time of touching skin.

  One aspect of the connector of the present disclosure includes a cylindrical connector connecting portion to which a pair of connectors are connected, a tube connecting portion provided on the proximal side of the connector connecting portion, and a proximal end of the connector connecting portion. And the wings projecting on both sides of the tube connecting part at the base end side from the collar part, the collar part has an elliptical shape or an elliptical shape in plan view, and the major axis of the collar part is , Larger than the outer diameter of the lock ring of the connector to be paired, the short diameter of the flange portion coincides with the outer diameter of the base end of the connector connection portion, the wing portion extends in the direction of the long diameter of the flange portion, the wing portion The maximum width between the blades is less than the major axis of the buttocks.

  In one aspect of the connector, the long diameter of the flange portion is larger than the outer diameter of the lock ring of the pair of connectors, and the short diameter of the flange portion coincides with the outer diameter of the base end of the connector connecting portion. For this reason, since the part by the side of the short diameter which the collar part does not protrude outside contacts the skin, it can reduce discomfort. Further, since the wing part expands in the direction of the major axis of the collar part, the operation becomes easy by gripping the wing part. Furthermore, the maximum width between the wings of the wing part is equal to or less than the major axis of the buttocks, and the wings do not protrude from the buttocks, which can make it difficult for the patient to feel uncomfortable.

  In one aspect of the connector, the flange portion may have an R shape in which at least a major axis side surface of the outer peripheral side surface is chamfered. By adopting such a configuration, it is possible to reduce a sense of discomfort when the buttocks touches the skin.

  In one aspect of the connector, the wing portion may have an R shape with a chamfered axial side surface. By setting it as such a structure, the discomfort at the time of a wing | wing part touching skin can be reduced.

  In one aspect of the connector, the wings can be such that the width between the wings gradually decreases toward the proximal end of the tube connection. By adopting such a configuration, the operability is improved without being in the way of gripping the wing.

  In one aspect of the connector, the tube connecting portion protrudes in a direction deviated from the major axis direction and the minor axis direction of the collar portion, and has a projecting ridge portion extending along the axis, and the projecting ridge portion does not project more than the collar portion. Can be. With such a configuration, the operability can be further improved.

  In one aspect of the connector, the tube connection portion may have a flat surface provided on the outer surface in the minor axis direction of the flange portion, and the flat surface may not have a portion protruding from the flange portion. it can. Even in such a configuration, the operability can be further improved.

  According to the medical connector of the present disclosure, it is possible to reduce discomfort when touching the skin and to improve operability.

It is a perspective view which shows the connector which concerns on one Embodiment. It is a front view which shows the connector which concerns on one Embodiment. It is a side view showing a connector concerning one embodiment. It is a top view which shows the connector which concerns on one Embodiment. It is a bottom view which shows the connector which concerns on one Embodiment. It is a front view showing the state where the connector concerning one embodiment was connected with the male connector. It is a perspective view which shows the modification of the connector which concerns on one Embodiment. It is a front view which shows the modification of the connector which concerns on one Embodiment. It is a side view which shows the modification of the connector which concerns on one Embodiment. It is a top view which shows the modification of the connector which concerns on one Embodiment. It is a bottom view which shows the modification of the connector which concerns on one Embodiment.

  As shown in FIGS. 1 to 6, the medical connector of the present embodiment is a female connector to which a male connector 200 to be paired is connected, and is based on a cylindrical connector connecting portion 101 and a connector connecting portion 101. The tube connecting portion 102 provided on the end side, the flange portion 103 provided on the proximal end of the connector connecting portion 101, and the wing portion 104 protruding to both sides of the tube connecting portion 102 on the proximal end side with respect to the flange portion 103. And.

  The flange 103 has an elliptical shape or an elliptical shape in plan view, and the major axis of the collar 103 is larger than the outer diameter of the lock ring 202 of the male connector to be paired. This coincides with the outer diameter of the base end of the portion 101. The wing portion 104 extends in the direction of the major axis of the flange portion 103, and the maximum width W between the wing portions 104 is equal to or less than the major axis of the flange portion 103.

  The medical connector of the present disclosure may be used in any direction, but will be described with the connector connecting portion 101 side facing up and the tube connecting portion 102 facing down for convenience. The axial direction of the connector is the height, the major axis direction of the flange portion 103 is the width, the minor axis direction is the thickness, and the axial direction of the connector is substantially perpendicular to the reference plane. The description will be made assuming that the state is horizontal.

  In the connector of the present embodiment, since the flange portion 103 has an oval shape or an elliptical shape, when the connector is placed on a plane with the connector sideways, it is stable in a direction in which the minor axis direction of the flange portion 103 is substantially orthogonal to the plane surface. The connector does not roll. Moreover, since the buttocks 103 have a planar shape with no corners, the patient's skin does not hit the corners, and there is no discomfort. Further, since the length of the short diameter of the flange portion 103 matches the outer diameter of the base end of the connector connecting portion 101, the flange portion 103 does not protrude in this direction, and the contact area between the connector and the plane is large. Become. Therefore, even if the connector comes into contact with the patient's skin, no force is applied to one point, and discomfort can be reduced. On the other hand, the major axis of the flange 103 can satisfy the ISO standard.

  The outer peripheral side surface of the collar portion 103 can be chamfered in an R shape. Thereby, the uncomfortable feeling by the collar part 103 can further be reduced. Although the whole outer peripheral side surface of the collar portion 103 can be chamfered, it is preferable that at least the side surface in the major axis direction is chamfered.

  The connector 100 according to the present embodiment includes the wing portions 104 that protrude on both sides of the tube connection portion 102 on the proximal end side with respect to the flange portion 103, so that the connector 100 is more than the case of the simple cylindrical tube connection portion 102. Operation becomes easy. When connecting or disconnecting the male connector, a force is easily applied by placing a finger on the wing 104, and the operation can be performed smoothly.

  Since the wing portion 104 extends in the major axis direction of the collar portion 103, when the connector comes into contact with the patient's skin, the wing portion 104 also comes into contact with the patient's skin on the surface, thereby reducing discomfort. Can do. Further, since the maximum width W between the blades of the wing portion 104 is equal to or less than the major axis of the flange portion 103, the wing portion 104 does not protrude from the flange portion 103, and the wing portion 104 does not get in the way. If the width between the wings matches the length of the major axis of the wing 103 at the upper end of the wing 104, the wing 103 and the wing 104 are smoothly connected without any step. It can make it harder to give pleasure.

  It is preferable that the wing | blade part 104 is changing smoothly so that the width | variety between wing | blades may become small gradually from an upper end to a lower end. By doing in this way, the wing | blade part 104 can be made hard to get caught in a patient's skin. However, the width W between the wings 104 of the wing part 104 does not monotonously decrease, but may be a shape provided with a depression on which a finger can be applied. This facilitates gripping and improves the operability of the connector.

  The side surface in the axial direction of the wing portion 104 may be chamfered in an R shape. Thereby, the uncomfortable feeling by the wing | blade part 104 can further be reduced.

  In the present embodiment, four protruding strips 106 extending in the axial direction are provided on the surface of the tube connecting portion 102. By providing the ridge 106, gripping is further facilitated. The ridge 106 is formed so as to protrude in the minor axis direction of the flange 103 and the direction shifted from the major axis direction. Further, the projection 106 is provided so as not to protrude from the flange 103 when viewed in plan with the connector upright. By doing in this way, the protruding item | line part 106 can make it hard to touch skin, and a discomfort can be reduced.

  As shown in FIGS. 7 to 11, a flat surface 107 in which a part of the outer surface of the tube connecting portion 102 is cut off in the minor axis direction of the flange portion 103 may be formed. By providing the flat surface 107, gripping becomes easy. Moreover, since the part which contacts skin becomes a plane, a pressure can be disperse | distributed and a discomfort can be reduced more. Since the flat surface 107 is formed by cutting off a part of the outer surface of the tube connecting portion 102, the flat surface 107 does not have a portion protruding from the flange portion 104. For this reason, the sense of incongruity when touching the skin is not increased. In addition to providing the flat surface 107, the ridge 106 can also be provided.

  The connector which becomes a pair of the connector of this embodiment can be made into the male luer connector based on ISO80369-3, for example. The connector connecting portion 101 has an opening having a tapered inner wall surface that receives a male luer connector, and a male screw 111 that is screwed with a lock ring of the male luer connector is provided on the outer peripheral surface of the connector connecting portion 101. ing. For this reason, excellent liquid tightness and connection strength can be realized.

  When the connector according to the present embodiment is a connector conforming to ISO 80369-3, the flange 103 can have a major axis of, for example, 13.3 mm or more and 30 mm or less. The short diameter is determined by the outer diameter of the base end of the connector connecting portion 101, and the outer diameter of the base end of the connector connecting portion 101 can be 5.0 mm or more and 8.2 mm or less.

  For example, the tube connecting part 102 can be connected to a container containing a nutrient for enteral nutrition and connected to a tube. Although the example in which the tube connecting portion 102 is configured to be externally fitted to the tube has been shown, it may be configured to be internally fitted to the tube.

  The connector of the present disclosure is useful as a connector provided at the end of the enteral nutrition line on the patient side, but the concept of the present disclosure can be reflected in connectors used for other purposes.

  The connector of the present disclosure can reduce discomfort when touching the skin and can improve operability, and is useful as a medical connector or the like.

DESCRIPTION OF SYMBOLS 100 Connector 101 Connector connection part 102 Tube connection part 103 The collar part 104 Wing part 106 Projection part 107 Flat surface 202 Lock ring

Claims (6)

A cylindrical connector connecting portion to which a pair of connectors are connected;
A tube connecting portion provided on the base end side of the connector connecting portion;
A flange provided at the base end of the connector connecting portion;
A wing portion projecting on both sides of the tube connecting portion on the proximal side from the flange portion,
As for the said collar part, planar shape is an ellipse shape or an ellipse shape,
The long diameter of the flange portion is larger than the outer diameter of the lock ring of the pair of connectors,
The short diameter of the flange matches the outer diameter of the base end of the connector connecting portion,
The said wing | blade part spreads in the direction of the long diameter of the said collar part, The maximum width between the wing | blades of the said wing | blade part is a medical connector which is below the major axis of the said collar part.   The medical connector according to claim 1, wherein the flange has an R shape in which at least a major axis side surface of the outer peripheral side surface is chamfered.   The medical connector according to claim 1, wherein the wing portion has an R shape with a chamfered side surface in the axial direction.   The medical connector according to any one of claims 1 to 3, wherein the wing portion has a width between the wings gradually decreasing toward a base end of the tube connecting portion. The tube connection part protrudes in a direction deviated from the major axis direction and the minor axis direction of the flange part, and has a ridge part extending along the axis,
The medical connector according to any one of claims 1 to 4, wherein the ridge portion does not protrude from the collar portion. The tube connecting portion has a flat surface provided on the outer surface in the minor axis direction of the flange portion,
The said flat surface is a medical connector of any one of Claims 1-5 which does not have a part protruded rather than the said collar part.

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