JP2018011779A - Butterfly-shaped base plate and butterfly needle using the same - Google Patents

Abstract

A wing-shaped base plate capable of preventing slippage between wing-shaped portions and easily setting the angle of the blade surface of a needle tube to an appropriate angle is provided. A wing-shaped substrate (2) includes a fixed portion (21) to which a needle tube (11) is fixed, a flexible first wing-shaped portion (22) extending on one side in a left-right direction, and a flexible first wing-shaped portion (22) extending on the other side. and a second wing-like portion 23 of the same type. The first contact portion 22b of the first wing-shaped portion 22 is formed with a plurality of engagement grooves 22b2 arranged in the left-right direction and separated by wall portions 22b1. The second contact portion 23b of the second wing-shaped portion 23 is formed with a protruding portion 23b1 that engages with one of the engagement grooves 22b2. A height h1 of the wall portion 22b1 is formed higher than a height h2 of the protruding portion 23b1. [Selection drawing] Fig. 1

Description

  The present invention relates to a winged substrate to which a needle tube is fixed and a winged needle using the same.

  Conventionally, a winged needle having a needle tube having a blade surface inclined with respect to an axis and a winged substrate to which the needle tube is directly fixed or indirectly fixed via a needle base is known. ing.

  A wing-like substrate of this type of wing-like needle has a pair of wing-like portions extending in a direction intersecting with the axis of the needle tube. And in the winged needle comprised using such a wing-like board | substrate, a holding part is formed by a pair of wing-like parts by curving a wing-like board | substrate so that wing-like parts may mutually contact.

  By the way, in the winged needle in which the grip portion is formed in this way, if the relative position of the wing portions changes due to slippage between the wing portions after the grip portion is formed, it is fixed to the wing-shaped substrate. The blade surface of the needle tube may rotate, and the needle tube may not be punctured at an appropriate angle. Therefore, a configuration is known in which an engagement mechanism is provided in the wing-shaped portion to prevent a change in the relative position between the wing-shaped portions after the grip portion is formed (and, in turn, rotation of the blade surface of the needle tube) (for example, Patent Documents). 1).

JP-A-46-005296

  However, in the conventional winged needle as described in Patent Document 1, in order to change the angle of the blade surface of the needle tube, the position where the needle tube is re-fixed to the winged substrate or the winged portion is provided with the engagement mechanism. There has been a problem that the blade face angle cannot be easily corrected because it must be brought into contact at different positions.

  The present invention has been made in view of the above points, a wing-like substrate capable of preventing slippage between wing-like portions and easily setting the angle of the blade surface of the needle tube to an appropriate angle, and a wing-like needle using the same. The purpose is to provide.

  In order to achieve the above object, a wing-like substrate to which a needle tube having a blade surface inclined with respect to an axis is fixed, the fixing portion to which the needle tube is fixed, and when the needle tube is fixed to the fixing portion A plate-like first wing-like portion extending from the fixed portion on one side in the left-right direction, which is a direction intersecting the axis of the needle tube, and a plate-like shape extending from the fixed portion on the other side in the left-right direction A second wing-like portion, and the first wing-like portion and the second wing-like portion are configured to be bendable so as to be in contact with each other, and contact the second wing-like portion of the first wing-like portion. The first contact part is formed with a plurality of engaging recesses separated by a wall part so as to be arranged in the left-right direction, and the second contact part contacting the first wing part of the second wing part Is formed with an engaging convex portion, and the engaging convex portion is alternatively engaged with any of the plurality of engaging concave portions. A capacity, characterized in that the height of the height and the engagement convex portion of the wall portion is different.

  The winged substrates of the present invention are configured to be bendable so that they can contact each other. In addition to this, the wing-like substrate of the present invention has a plurality of engagement recesses that can be engaged with the engagement protrusions, and the plurality of engagement recesses are arranged in the left-right direction. Therefore, when the wing-like portions are brought into contact with each other to form the grip portion, any one of the engaging convex portion and the engaging concave portion is engaged, and the wing-like portions are prevented from slipping.

  On the other hand, when a force is intentionally applied so as to slide the wing-shaped part, the wall part or the engaging convex part is bent, or the whole first contact part or the whole second contact part is bent, The engaging convex portion gets over the contacting wall portion and engages with another engaging concave portion adjacent to the engaging concave portion that was originally engaged. In addition, by making the height of the wall portion different from the height of the engaging convex portion (that is, by providing a portion with a high height that is easy to bend and a portion with a low height that is easy to get over), it slides on the wing-like portion. When the force to be applied is applied, one has a shape that makes it easier to get over the other.

  Thereby, in the wing-shaped substrate of the present invention, the wing-shaped portion is slid in the left-right direction (direction intersecting the axis of the needle tube) in a state where the grip portion is formed, and the relative position in the left-right direction between the wing-shaped portions is changed, The angle of the blade surface of the needle tube fixed to the fixed part can be changed by rotating the fixed part connected to the left and right wing-shaped parts in stages.

  Therefore, according to the wing-shaped substrate of the present invention, even after the wing-shaped portions are brought into contact with each other to form the gripping portion, the engagement position is easily changed, the angle of the blade surface of the needle tube is corrected, and an appropriate angle is obtained. can do.

  Moreover, in the winged board | substrate of this invention, it is preferable that the corner | angular part of the left-right direction of the said wall part or the corner | angular part of the left-right direction of the said engagement convex part is chamfered.

  In this way, if the corners of the wall or the corners of the engaging projections are chamfered, the corners do not come into contact with each other when sliding, so that the engagement projections move smoothly. Become. As a result, when force is applied to slide the wing-shaped part, the engaging convex part easily gets over the wall part, so that the angle of the blade surface of the needle tube can be more easily corrected to an appropriate angle. Will be able to.

  Further, in the winged substrate of the present invention, the surface of the first winged part opposite to the engaging concave part or the surface of the second winged part opposite to the engaging convex part is roughened. Is preferably applied.

  If roughening is performed at such a position, the wing-like parts can be easily slid in a state where the grip part is picked by the fingertip. As a result, the force required to slide the wing-like portion is reduced, so that the angle of the blade surface of the needle tube can be more easily corrected to an appropriate angle.

  In order to achieve the above object, a winged needle of the present invention includes any one of the winged substrates described above and the needle tube fixed to the winged substrate.

The perspective view of the winged needle using the winged board concerning the embodiment of the present invention. 2A and 2B are cross-sectional views taken along the line II-II of the wing-shaped substrate of FIG. 1, in which FIG. 2A shows a fixed state and FIG. Sectional drawing which expands and shows the shape of the engagement recessed part periphery of the winged board | substrate of FIG. Sectional drawing which expands and shows the shape of the engagement convex part periphery of the winged board | substrate of FIG. FIG. 5A is an enlarged cross-sectional view showing a state where the engagement concave portion and the engagement convex portion of FIG. 1 are engaged, FIG. 5A is a normal engagement state, and FIG. 5B is a case where the wing-like portions are slid with respect to each other; The engaged state is shown. The perspective view of the winged needle using the winged board | substrate which concerns on the modification of FIG.

  Hereinafter, a winged needle using the winged substrate according to the embodiment will be described with reference to the drawings.

  First, the configuration of the winged needle N will be described with reference to FIGS.

  As shown in FIG. 1, the winged needle N includes a needle body 1 connected to an infusion tube and the like, and a winged substrate 2 to which the needle body 1 is fixed.

  The needle body 1 includes a cylindrical needle tube 11 and a cylindrical needle base 12 to which the needle tube 11 is fixed and connected to an infusion tube or the like. The blade surface 11 a at the tip of the needle tube 11 is inclined with respect to the axis a of the needle tube 11 and the needle base 12. The needle base 12 is inserted into a cylindrical fixing portion 21 described later. Thereby, the needle body 1 (and thus the needle tube 11) is fixed to the wing-like substrate 2 in a non-rotatable state.

  The wing-shaped substrate 2 includes a cylindrical fixed portion 21, a plate-shaped first wing-shaped portion 22 extending from the fixed portion 21 on one side in the left-right direction that intersects the axis a of the needle tube 11, and the left-right direction. On the other side, a plate-like second wing-like portion 23 extending from the fixing portion 21 is provided.

  The needle base 12 of the needle body 1 is inserted and fixed to the fixing portion 21. Thereby, the needle body 1 (and eventually the needle tube 11) is fixed to the winged substrate 2. Note that the fixing portion of the present invention may have a shape other than the shape in which the needle tube is indirectly fixed by inserting the needle base as long as the needle tube can be fixed to the wing-shaped substrate. For example, the needle base may be detachably engaged, or the needle tube may be directly fixed without using the needle base.

  The first wing-like portion 22 is made of a flexible material, and is provided continuously on the opposite side of the first bending portion 22a connected to the fixing portion 21 and the fixing portion 21 of the first bending portion 22a. The first contact portion 22b is provided. The second wing-like portion 23 is made of a flexible material, and is continuously provided on the opposite side of the second bending portion 23a connected to the fixing portion 21 and the fixing portion 21 of the second bending portion 23a. And a second contact portion 23b.

  The first bending portion 22a and the second bending portion 23a have flexibility. Therefore, in the winged substrate 2, by bending one or both of the first bending portion 22a and the second bending portion 23a (for example, from the state of FIG. 2A to the state of FIG. 2B), the first contact portion 22b. And the second contact portion 23b can contact each other. In the winged substrate 2, a gripping portion is formed by the first contact portion 22 b and the second contact portion 23 b brought into contact with each other in this manner.

  At this time, in the wing-like substrate 2, the engaging groove 22b2 and the protruding portion 23b1 are formed on the surface of the first contact portion 22b and the second contact portion 23b on the side where the fixing portion 21 protrudes. When formed, the fixing portion 21 is sandwiched between the first wing portion 22 and the second wing portion 23.

  In addition, the engaging groove 22b2 and the protruding line part 23b1 may be formed on the surface opposite to the side from which the fixing part 21 of the first contact part 22b and the second contact part 23b protrudes. In that case, when the grip portion is formed, the first bending portion 22a and the second bending portion 23a are bent to the side opposite to the direction illustrated in FIG.

  As shown in FIG. 3, the first contact portion 22b has three engagement grooves 22b2 (engagement recesses) partitioned by a wall portion 22b1 on the surface that contacts the second contact portion 23b. The engaging grooves 22b2 are formed so as to be aligned in the left-right direction, which is the direction intersecting the axis a of the needle tube 11. That is, the wall portion 22b1 is formed as two ridges extending in a direction parallel to the axis a of the needle tube 11 and arranged in the left-right direction (see FIG. 1).

  As shown in FIG. 4, the second contact portion 23 b is formed on the surface in contact with the first contact portion 22 b, with a protruding strip portion 23 b 1 (engagement protrusion) having a shape engageable with the engagement groove 22 b 2 of the first contact portion 22 b. Part) is formed. Specifically, the protruding line portion 23b1 is formed as a single protruding line extending in a direction parallel to the axis a of the needle tube 11 (see FIG. 1).

  As shown in FIGS. 3 and 4, the height h1 of the wall portion 22b1 is configured to be lower than the height h2 of the ridge portion 23b1. This is for facilitating the operation of getting over the wall portion 22b1 on the ridge portion 23b1 described later by making the ridge portion 23b1 easy to bend and making it easier to get over the wall portion 22b1. Even if the height h1 of the wall portion 22b1 is configured to be higher than the height h2 of the ridge portion 23b1, the same effect can be obtained.

  Moreover, the 1st corner | angular part 22b3 which is the corner | angular part of the left-right direction of wall part 22b1, and the 2nd corner | angular part 23b2 which is the corner | angular part of the left-right direction of the protruding item | line part 23b1 are chamfered in the shape of a curve. This is to prevent the corners from coming into contact with each other when the ridge 23b1 gets over the wall 22b1.

  The chamfering may be performed only on either the first corner portion 22b3 or the second corner portion 23b2. Even if the chamfered shape is linear, the same effect can be obtained. Further, when the sliding direction between the first wing-like portion 22 and the second wing-like portion 23 is only one of the left and right directions, chamfering may be performed only on any one of the left and right corners. Further, when the first wing-like portion 22 and the second wing-like portion 23 have sufficient flexibility, chamfering may not be performed.

  Moreover, as shown in FIGS. 2-4, the surface on the opposite side to the surface in which the wall part 22b1 and the engaging groove 22b2 of the 1st contact part 22b are formed is the 1st holding | grip by which the roughening process was performed. It is a surface 22b4. Further, the surface of the second contact portion 23b opposite to the surface on which the ridges 23b1 are formed is a second gripping surface 23b3 that has been subjected to roughening.

  Since the first gripping surface 22b4 and the second gripping surface 23b3 are surfaces that are touched by the user's fingertip when the gripping portion is formed, the wing-shaped substrate 2 increases the friction of these surfaces by increasing the first friction. The force required for sliding the wing-like portion 22 and the second wing-like portion 23 is reduced. In addition, when the raw material of the 1st wing | blade part 22 and the 2nd wing | blade part 23 has sufficient friction etc., it is a rough surface in any one or both of the 1st holding surface 22b4 and the 2nd holding surface 23b3. Processing may not be performed.

  Next, with reference to FIG. 2 and FIG. 5, an operation for forming a grip portion with the first wing-shaped portion 22 and the second wing-shaped portion 23 and an operation for performing a puncturing operation with the wing-shaped needle N will be described. To do.

  First, as shown in FIG. 2A, the first wing-like portion 22 and the second wing-like portion 23 are positioned in the left-right direction with the fixing portion 21 interposed therebetween.

  In order to form the grip portion, the user moves one or both of the first wing portion 22 and the second wing portion 23 to move the first bending portion 22a and the second bending portion as shown in FIG. 2B. The part 23a is curved, and the first contact part 22b and the second contact part 23b are brought into close contact with each other. As a result, a grip portion is formed by the first wing-shaped portion 22 and the second wing-shaped portion 23, and the user grips the grip portion with the fingertip.

  At this time, as shown in FIG. 5A, the ridge portion 23b1 selectively engages with any one of a plurality of engagement grooves 22b2. Thereby, in the wing-like board | substrate 2, the slip between the 1st wing-like part 22 and the 2nd wing-like part 23 is prevented.

  In this state, when the blade surface 11a of the needle tube 11 is at an appropriate angle (for example, when the angle is as shown in FIG. 1), the puncturing operation is performed as it is.

  On the other hand, when the blade surface 11a of the needle tube 11 is not at an appropriate angle, the user can either move the first wing-like portion 22 and the second wing-like portion 23 in the left-right direction, which is the direction intersecting the axis a of the needle tube 11. Slide toward the side.

  Here, in the wing-like substrate 2, the first wing-like portion 22 and the second wing-like portion 23 are configured to be slidable in the left-right direction. In addition to this, the wing-shaped substrate 2 includes a plurality of engagement grooves 22b2 that can be engaged with one protruding portion 23b1, and the plurality of engagement grooves 22b2 are arranged in the left-right direction.

  Therefore, at this time, when the wall portion 22b1 or the ridge portion 23b1 bends, or when the entire first contact portion 22b or the entire second contact portion 23b bends, the ridge portion 23b1 is in contact. It climbs over the wall 22b1 and engages with another engagement groove 22b2 adjacent to the engagement groove 22b2 that was originally engaged (from the state shown in FIG. 5A to the state shown in FIG. 5B).

  Thereby, the relative position in the left-right direction of the first wing-like portion 22 and the second wing-like portion 23 changes, and the fixed portion 21 connected to the first wing-like portion 22 and the second wing-like portion 23 rotates, The needle base 12 fixed to the fixing portion 21 (that is, the needle tube 11 connected to the needle base 12) rotates.

  That is, in the winged needle N using the winged substrate 2, the needle tube 11 is rotated stepwise by sliding the first winged portion 22 and the second winged portion 23 forming the gripping portion in the left-right direction. The angle of the blade surface 11a of the needle tube 11 can be changed.

  Then, when the user performs the sliding operation and the angle of the blade surface 11a of the needle tube 11 becomes appropriate, the user performs the puncturing operation in that state.

  Although the illustrated embodiment has been described above, the present invention is not limited to such a form.

  For example, in the above embodiment, the plurality of engaging grooves 22b2 extending in the direction of the axis a of the needle tube 11 are used as engaging recesses, and the protrusions 23b1 extending in the direction of the axis a of the needle tube 11 are used as engaging projections. As a part. However, the winged substrate of the present invention is not limited to such a configuration, and includes a plurality of engagement recesses that can be engaged with one engagement projection, and the plurality of engagement recesses are needle tubes. Any arrangement may be used as long as it is arranged in the left-right direction, which is the direction intersecting the axis.

  For example, as in the modification shown in FIG. 6, a plurality of holes 22b5 arranged in the direction of the axis a are formed in the first wing-like portion 22 so as to be arranged in four rows in the left-right direction, and in the second wing-like portion 23, A plurality of convex portions 23b4 that can engage with the holes 22b5 and are arranged in the direction of the axis a may be formed so as to be arranged in two rows in the left-right direction. In this case, a portion between the holes 22b5 becomes a wall portion.

DESCRIPTION OF SYMBOLS 1 ... Needle body, 2 ... Wing-like board | substrate, 11 ... Needle tube, 11a ... Blade surface, 12 ... Needle base, 21 ... Fixed part, 22 ... 1st wing-like part, 22a ... 1st curved part, 22b ... 1st contact part, 23 ... 2nd airfoil part, 23a ... 2nd curved part, 22b1 ... Wall part, 22b2 ... Engagement groove (engagement recessed part), 22b3 ... 1st corner | angular part, 22b4 ... 1st holding surface, 22b5 ... Hole (engagement) Recess), 23b ... second contact portion, 23b1 ... projection strip (engagement projection), 23b2 ... second corner, 23b3 ... second grip surface, 23b4 ... projection (engagement projection), a ... axis , N ... Wings.

Claims (4)

A winged substrate to which a needle tube having a blade surface inclined with respect to an axis is fixed,
A fixing portion to which the needle tube is fixed, and a plate-like first extending from the fixing portion on one side in the left-right direction, which is a direction that intersects the axis of the needle tube when the needle tube is fixed to the fixing portion. A wing-like portion, and a plate-like second wing-like portion extending from the fixed portion on the other side in the left-right direction,
The first wing and the second wing are configured to be bendable so that they can contact each other,
In the first contact portion that contacts the second wing-shaped portion of the first wing-shaped portion, a plurality of engaging recesses partitioned by a wall portion are formed so as to be aligned in the left-right direction,
An engagement convex portion is formed on the second contact portion that contacts the first wing shape portion of the second wing shape portion,
The engaging convex portion can alternatively engage with any of the plurality of engaging concave portions,
The wing-like substrate, wherein the height of the wall portion and the height of the engaging convex portion are different. The winged substrate according to claim 1,
The wing-like substrate, wherein a corner portion in the left-right direction of the wall portion or a corner portion in the left-right direction of the engaging convex portion is chamfered. The winged substrate according to claim 1 or 2,
The surface of the first wing-shaped part opposite to the engagement concave part or the surface of the second wing-shaped part opposite to the engagement convex part is roughened. Wing board.   A winged needle comprising the winged substrate according to any one of claims 1 to 3 and the needle tube fixed to the winged substrate.