JP3217532U - Needle holder - Google Patents

Abstract

There is provided a needle holder for a wind instrument that can maintain a grasping state of a suture needle with a simple structure and can have a long life. SOLUTION: Bar-shaped main body portions 3a and 3b provided side by side, gripping portions 11a and 11b provided on one end side in the longitudinal direction of the main body portions 3a and 3b, and a handle portion 13a provided on the other end side. 13b, between the coupling portions 5 provided on the opposing inner surfaces 31a and 31b of the main body portions 3a and 3b so as to be relatively rotatable between the main body portions 3a and 3b, and the handle portions 13a and 13b of the main body portions 3a and 3b. And an elastic member 7 for attaching the handle portions 13a and 13b to each other and bringing the grip portions 11a and 11b into contact with each other, and rotating shafts of the coupling portion 5 from the other ends 27a and 27b of the handle portions 13a and 13b. The dimension L1 to the center is larger than the dimension L2 from the one end portions 15a, 15b of the gripping portions 11a, 11b to the rotation axis of the coupling portion 5. [Selection] Figure 1

Description

  The present invention relates to a needle holder for holding a medical suture needle.

  As a conventional needle holder, there exists a thing of patent document 1, for example.

  In this needle holder, a pair of rod-shaped main body portions are crossed at a portion near one end, and the main body portions are pivotally supported at the crossing portions so as to be rotatable with respect to each other. The other end of the main body is coupled by a leaf spring and is biased in a direction away from each other.

  By the urging of the leaf spring, the needle holder holds the grip portion provided at one end of the main body portion in an open state. When grasping the suture needle, a doctor or the like can grasp the suture needle by closing the grasping portion by grasping the handle portion of the main body portion. The grasping state of the suturing needle is maintained by the engagement of the engaging portions provided on the inner surfaces facing the main body.

  In such a conventional needle holder, since the engaging portion is used to maintain the grasping state of the suture needle, the structure is complicated accordingly, and the engagement portion is damaged by repeatedly grasping and releasing the grasping needle. It is easy and there is a problem of shortening the life of the needle holder.

Japanese Patent No. 4619808

  The problem to be solved by the present invention is that the structure becomes complicated for maintaining the grasping state of the suture needle and the life of the needle holder is shortened.

  The present invention is a needle holder for holding a suture needle for medical use in order to enable the holding state of the suture needle to be maintained with a simple structure and to prolong the life of the needle. A main body, a grip provided on one end in the longitudinal direction of the main body, a handle provided on the other end of the main body in the longitudinal direction, and between the grip and the handle And a coupling portion provided on the opposing inner surfaces of the main body portion for coupling the main body portions so as to be relatively rotatable, and attached between the handle portions of the main body portion to separate the handle portions from each other and An elastic member abutting against each other, and a dimension in the longitudinal direction from a distal end portion of the handle portion to the coupling portion to a rotation axis of the coupling portion is relative to the coupling portion of the grip portion. Longer than the dimension in the longitudinal direction from the distal end to the rotational axis of the coupling And most main feature that.

  According to the needle holder of the present invention, the suturing needle can be interposed between the grasping portions and the grasping state can be maintained by the elastic force of the elastic member, and the suturing needle can be maintained in the grasping state with a simple structure. In addition, the service life can be extended by eliminating the need for the engaging portion.

  Moreover, in the needle holder of the present invention, since the length of the handle portion is longer than the length of the grasping portion, it is possible to securely grasp the suturing needle while weakening the elastic force of the elastic member. The operation force of the operator when releasing the grip can be weakened and the operation can be performed smoothly.

It is a top view which shows the needle holder which concerns on one Example of this invention. It is a top view which shows the open state of the needle holder of FIG. It is a side view of the needle holder of FIG. It is a top view shown in the state where a part of needle holder of Drawing 1 was disassembled. It is sectional drawing which concerns on the IV-IV line of FIG. It is sectional drawing which shows the coupling | bond part of the needle holder which concerns on a modification. It is sectional drawing which shows the coupling | bond part of the needle holder which concerns on another modification.

  The object of enabling the holding state of the suture needle to be maintained with a simple structure and extending the life is realized by a needle holder that maintains the holding state of the suture needle by the elastic force of the elastic member.

  That is, the needle holder includes a pair of side-by-side rod-like body portions, a grip portion provided on one end side in the longitudinal direction of the body portion, and a handle portion provided on the other end side in the longitudinal direction of the body portion. Between the gripping portion and the handle portion, which are provided on the opposing inner surfaces of the main body portion, and are coupled between the main body portions so as to be rotatable relative to each other and the handle portion of the main body portion. And an elastic member that causes the gripping portions to contact each other.

  The longitudinal dimension from the distal end to the coupling portion of the handle to the rotational axis of the coupling portion is the longitudinal dimension from the distal end to the coupling portion of the gripping portion to the rotational axis of the coupling portion. Longer than

  The main body may have a sliding surface for sliding the suture thread in at least one of the directions along the rotation axis, and the sliding surface may be continuous over both sides of the coupling portion.

  The coupling portion has a mating surface for mating the main body portions in the side-by-side direction in which the main body portion is provided, and the mating surface is a portion adjacent to the sliding surface only on or flush with the sliding surface. It is good also as a structure which has the edge part of the direction along a rotating shaft center only on the surface biased inside the center direction.

  Further, the mating surface may be a curved surface having a center of curvature coinciding with the rotation axis.

  The coupling portion may be provided within the range of the inner surfaces of both main body portions in the direction along the rotation axis.

  Hereinafter, a needle holder according to an embodiment of the present invention will be described with reference to the drawings.

[Configuration of needle holder]
1 is a plan view showing a needle holder according to an embodiment of the present invention, FIG. 2 is a plan view of the needle holder in the opened state, and FIG. 3 is a side view of the needle holder. 4 is a cross-sectional view taken along line IV-IV in FIG. 1, and FIG. 5 is a plan view showing a part of the needle holder in FIG. 1 in an exploded state.

  The needle holder 1 includes a pair of main body portions 3 a and 3 b, a coupling portion 5, and an elastic member 7.

  The main body portions 3a and 3b are in the form of bars provided side by side and are coupled to each other by a coupling portion 5 so as to be relatively rotatable. The main body portions 3a and 3b are formed of a metal having corrosion resistance and biocompatibility with respect to moisture and chemicals such as titanium and stainless steel.

  Both side surfaces of the main body portions 3a and 3b in the direction along the rotation axis O (hereinafter referred to as “rotation axis direction”) constitute sliding surfaces 9a and 9b for sliding the suture thread. . The sliding surfaces 9a and 9b are continuous over both sides of the coupling portion 5 in the longitudinal direction of the main body portions 3a and 3b.

  Grip portions 11a and 11b are provided on one end side in the longitudinal direction of the main body portions 3a and 3b, and handle portions 13a and 13b are provided on the other end side of the main body portions 3a and 3b.

  The grip portions 11a and 11b are portions that hold and hold a suture needle (not shown) between each other. Note that the gripping portions 11a and 11b refer to a range where they are in contact with each other by at least the elastic force of the elastic member 7 described later. In the present embodiment, the entire one end side of the main body portions 3a and 3b with respect to the coupling portion 5 constitutes the grip portions 11a and 11b. However, the gripping portions 11a and 11b can be configured by a part of one end side of the main body portions 3a and 3b.

  The gripping portions 11a and 11b have a width dimension and a rotation axis direction dimension that gradually increase from the distal distal end portions 15a and 15b in the longitudinal direction with respect to the coupling portion 5 to the proximal other end portions 17a and 17b. Is formed. Moreover, as for the holding parts 11a and 11b, the one end parts 15a and 15b are curving gradually in the direction of a rotation axis. Accordingly, the gripping portions 11a and 11b are easy to grip the suture needle. However, the one end portions 15a and 15b of the grip portions 11a and 11b may be straight without being curved.

  The width direction is the width direction of the main body portions 3a and 3b and refers to a direction that intersects the longitudinal direction and the rotation axis direction of the main body portions 3a and 3b.

  The inner surfaces 19a and 19b in the width direction of the gripping portions 11a and 11b are portions that come into contact with the suturing needle when gripping the suturing needle, and therefore are subjected to anti-slip processing or are attached with anti-slip members. . However, the anti-slip process and the anti-slip member may be omitted. Although it does not specifically limit as a non-slip member, For example, abrasion resistance etc. can be improved by using the cemented carbide which is a tungsten cobalt alloy.

  The handle portions 13a and 13b are portions gripped by an operator such as a doctor. On the outer surfaces 21a, 21b in the width direction of the handle portions 13a, 13b are formed uneven portions 23a, 23b for preventing slipping when the operator grips. The uneven portions 23a and 23b may be omitted, or another anti-slip process may be applied instead of the uneven portions 23a and 23b, or an anti-slip member may be attached.

  The handle portions 13a and 13b of the present embodiment are substantially constant in the width direction from one end portion 25a and 25b proximal to the coupling portion 5 to the other end portion 27a and 27b distal to the coupling portion 5, and the body portions 3a and 3b are Inclined so that they are gradually separated from each other in the direction in which they are installed (hereinafter referred to as “co-located directions”). The side-by-side direction is the left-right direction in FIG.

  Further, the dimensions of the handle portions 13a and 13b in the direction of the rotation axis gradually increase from the coupling portion 5 side to the middle of the concave and convex portions 23a and 23b, and then are substantially constant from the other end portions 27a and 27b. Elastic members 7 are provided at the other end portions 27a and 27b of the handle portions 13a and 13b.

  The dimension L1 in the longitudinal direction from the other end portions 27a, 27b of the handle portions 13a, 13b to the rotational axis O of the coupling portion 5 is the rotational axis of the coupling portion 5 from the one end portions 15a, 15b of the grip portions 11a, 11b. It is larger than the dimension L2 in the longitudinal direction up to O.

  The elastic member 7 is constituted by a pair of leaf springs 29a and 29b. However, the elastic member 7 is not limited to the leaf springs 29a and 29b, but can be constituted by other elastic members such as a compression spring.

  The leaf springs 29a and 29b are respectively extended from the other end portions 27a and 27b of the handle portions 13a and 13b, and the end portions are coupled to each other. Accordingly, the leaf springs 29a and 29b are urged so that the handle portions 13a and 13b are separated from each other in the side-by-side direction by the elastic force and the grip portions 11a and 11b are brought into contact with each other.

  The leaf springs 29a and 29b can be formed integrally or separately with the handle portions 13a and 13b. In the case of a separate body, one end of the leaf springs 29a and 29b is coupled to the handle portions 13a and 13b.

  The leaf springs 29a and 29b of the present embodiment have a smaller dimension in the width direction than the handle portions 13a and 13b and are substantially constant, and a dimension in the rotational axis direction is substantially constant.

  The coupling portion 5 is provided on the inner surfaces 31a and 31b facing the main body portions 3a and 3b between the gripping portions 11a and 11b and the handle portions 13a and 13b so as to relatively freely couple the main body portions 3a and 3b. This coupling | bond part 5 becomes a structure provided in the range of the inner surfaces 31a and 31b of both main-body parts 3a and 3b in the rotating shaft center direction.

  The coupling portion 5 of the present embodiment includes first tongue portions 33a and 33b provided on one main body portion 3a, a second tongue portion 35 provided on the other main body portion 3b, and first tongue portions 33a and 33b. And a rotating shaft 37 that pivotally supports the second tongue portion 35.

  The first tongue portions 33a and 33b are plate-like portions that protrude from the inner surface 31a of one main body portion 3a in a convex curved shape in the side-by-side direction. The convex curved surfaces 39a and 39b of the first tongue portions 33a and 33b have the center of curvature coinciding with the rotation axis O.

  The first tongue portions 33a and 33b are provided on both sides of the one main body portion 3a in the rotational axis direction, and the surfaces 41a and 41b are flush with the sliding surfaces 9a and 9b of the main body portion 3a, respectively.

  The second tongue portion 35 is a plate-like portion that protrudes from the inner surface 31b of the other main body portion 3b in a convex curved shape in the side-by-side direction. The second tongue portion 35 is provided at an intermediate portion in the rotational axis direction and is disposed between the first tongue portions 33a and 33b. On both sides of the second tongue portion 35 in the rotational axis direction, concave portions 43a and 43b for inserting the first tongue portions 33a and 33b are defined.

  The concave portions 43a and 43b are formed in a concave curved surface shape on the inner surface 31b of the other main body portion 3b in the side-by-side direction according to the first tongue portions 33a and 33b. Thus, the first tongue portions 33a and 33b are flush with the sliding surfaces 9a and 9b of the other main body portion 3b in a state where the first tongue portions 33a and 33b are inserted into the recesses 43a and 43b, respectively.

  Further, the concave curved surfaces 45a and 45b of the concave portions 43a and 43b have the same center of curvature as the rotational axis O, similar to the convex curved surfaces 39a and 39b of the first tongue portions 33a and 33b. Accordingly, the concave curved surfaces 45a and 45b are fitted to the convex curved surfaces 39a and 39b of the first tongue portions 33a and 33b in a state where the first tongue portions 33a and 33b are inserted into the concave portions 43a and 43b.

  That is, the main body portions 3a and 3b are provided side by side with the concave curved surfaces 45a and 45b and the convex curved surfaces 39a and 39b combined as a mating surface. For this reason, the mating surface of the present embodiment is a curved surface having a center of curvature coinciding with the rotation axis O.

  The concave curved surfaces 45a and 45b and the convex curved surfaces 39a and 39b, which are mating surfaces, are biased to be flush with the sliding surfaces 9a and 9b at the portions adjacent to the sliding surfaces 9a and 9b or inward in the rotational axis direction from the surfaces. An end portion in the direction of the rotational axis is provided only on the surface (hereinafter, simply referred to as “mating surface” means concave curved surfaces 45a and 45b and convex curved surfaces 39a and 39b which are the mating surfaces). In this embodiment, the end of the mating surface in the direction of the rotation axis is located on the same plane as the sliding surfaces 9a and 9b.

  For this reason, the gap (clearance) between the mating surfaces opens only on the surface flush with the sliding surfaces 9a and 9b in the portion adjacent to the sliding surfaces 9a and 9b, and does not open in the surface direction.

  Since the gap between the mating surfaces is always constant during the relative rotation of the main body portions 3a and 3b, it can be made extremely small. For example, in this embodiment, it is about 0.15 mm.

  The rotation shaft 37 is inserted through the first tongue portions 33a and 33b and the second tongue portion 35 in the direction of the rotation axis, and couples both together so as to be relatively rotatable. The rotation shaft 37 allows the main body portions 3a and 3b to rotate relative to each other.

[Operation of needle holder]
The needle holder 1 of the present embodiment is biased so that the handle portions 13a and 13b are separated from each other by the elastic force of the elastic member 7 before the operator of the suturing operation such as a doctor holds the suturing needle. The grip portions 11a and 11b are in contact with the inner surfaces 19a and 19b.

  When grasping the suture needle, the operator relatively rotates the main body portions 3a and 3b against the elastic force of the elastic member 7 by grasping the handle portions 13a and 13b on the other end side of the main body portions 3a and 3b. Thus, the recesses 43a and 43b are brought close to each other. Thereby, the holding | gripping part 11a, 11b of the one end side of main-body part 3a, 3b can be opened mutually.

  At this time, since the dimension L1 of the handle parts 13a and 13b is longer than the dimension L2 of the gripping parts 11a and 11b, the elastic force of the elastic member 7 can be set small and can be easily opened with a small operating force.

  After opening the gripping portions 11a and 11b, the suture needle is positioned between the gripping portions 11a and 11b, and the operating force is weakened to close the gripping portions 11a and 11b. As a result, the suture needle can be held between the holding portions 11a and 11b. The grasping state of the suture needle can be maintained by the elastic force of the elastic member 7.

  After gripping the suturing needle in this way, the suturing operation can be performed. In the sewing operation, the thread is slid along the sliding surfaces 9a and 9b of the main body portions 3a and 3b from the handle portions 13a and 13b side to the one end portions 25a and 25b side of the grip portions 11a and 11b over the coupling portion 5. Is done.

  At this time, in the needle holder 1 of the present embodiment, since the sliding surfaces 9a and 9b are continuous over both sides of the coupling portion 5, the concave curved surfaces 45a and 45b and the convex curved surface 39a which are mating surfaces of the coupling portion 5 are used. , 39b, the yarn can be smoothly slid along the sliding surfaces 9a, 9b without being caught in the respective gaps (clearances).

  Moreover, since the mating surface of the coupling portion 5 has a curved shape having a center of curvature that coincides with the rotational axis O, the gap can be made constant at all times when the main body portions 3a and 3b are relatively rotated. . Accordingly, the gap between the mating surfaces of the coupling portion 5 can be set to be extremely small, and when the yarn is slid, the yarn is not easily caught on the mating surface.

  In addition, the gap between the mating surfaces of the coupling portion 5 is in a curved state and opens only on the surface flush with the sliding surfaces 9a and 9b in the portion adjacent to the sliding surfaces 9a and 9b. It is hard to get caught.

  Therefore, in the needle holder 1 of the present embodiment, the suturing operation can be performed smoothly.

[Effect of Example]
As described above, the needle holder 1 according to the present embodiment includes a pair of rod-shaped main body portions 3a and 3b and gripping portions 11a and 11b provided on one end side in the longitudinal direction of the main body portions 3a and 3b. And the handle portions 13a and 13b provided on the other end side in the longitudinal direction of the main body portions 3a and 3b, and the inner surfaces 31a of the main body portions 3a and 3b facing each other between the grip portions 11a and 11b and the handle portions 13a and 13b. , 31b, which is attached between the handle portions 13a and 13b of the main body portions 3a and 3b and separates the handle portions 13a and 13b from each other and a gripping portion. 11a and 11b are provided with an elastic member 7 that abuts each other.

  And the dimension L1 in the longitudinal direction from the other ends 27a, 27b of the handle portions 13a, 13b relative to the coupling portion 5 to the rotation axis O of the coupling portion 5 is such that the grip portions 11a, 11b relative to the coupling portion 5 It is larger than the dimension L2 in the longitudinal direction from the distal end portions 15a, 15b to the rotation axis O of the coupling portion 5.

  Therefore, the needle holder 1 of the present embodiment can maintain the gripping state by the elastic member 7 with the suture needle interposed between the gripping portions 11a and 11b, and can maintain the gripping state of the suture needle with a simple structure. In addition, since the engaging portion for maintaining the gripping state is unnecessary, the life can be extended.

  Even with this configuration, in the needle holder 1, since the dimension L1 of the handle parts 13a and 13b is longer than the dimension L2 of the gripping parts 11a and 11b, the suture needle can be securely attached while weakening the elastic force of the elastic member 7. It is possible to grasp the suture needle, weaken the operator's operation force when grasping and releasing the suture needle, and smoothly perform the operation.

  The main body portions 3 a and 3 b have sliding surfaces 9 a and 9 b for sliding a suture thread in at least one of the rotational axis directions, and the sliding surfaces 9 a and 9 b are continuous over both sides of the coupling portion 5. Therefore, the yarn can be smoothly slid along the sliding surfaces 9a and 9b without being caught on the mating surface of the coupling portion 5.

  In addition, the coupling portion 5 has a mating surface that aligns the main body portions 3a and 3b with each other in the side-by-side direction where the main body portions 3a and 3b are provided, and is flush with the sliding surfaces 9a and 9b at portions adjacent to the sliding surfaces 9a and 9b. Only the top has an end in the direction of the axis of rotation.

  Accordingly, the gap between the mating surfaces of the connecting portion 5 opens only on the surface flush with the sliding surfaces 9a and 9b in the portion adjacent to the sliding surfaces 9a and 9b. It is possible to prevent the thread from being caught on the surface. As a result, in the needle holder 1 of the present embodiment, the suturing operation can be performed smoothly.

  In the present embodiment, since the mating surface is a curved surface having a center of curvature coinciding with the rotation axis O, the gap between the mating surfaces can be always constant during the relative rotation of the main body portions 3a and 3b. Accordingly, the gap between the mating surfaces of the coupling portion 5 can be set to be extremely small, and the yarn can be more difficult to be caught on the mating surfaces. In addition, since the mating surfaces are curved, the yarn is less likely to be caught.

  Furthermore, since the coupling portion 5 is provided within the range of the inner surfaces 31a and 31b of both the main body portions 3a and 3b in the direction of the rotation axis, the thread is caught when the sliding surfaces 9a and 9b are slid. There is nothing. As a result, in the needle holder 1 of the present embodiment, the suturing operation can be performed more smoothly.

[Modification]
FIG. 6 is a cross-sectional view of a coupling portion according to a modification.

  As shown in FIG. 6, the coupling portion 5 is formed such that the first tongue portion 33 a and the second tongue portion 35 are point-symmetric with respect to the center of the rotation shaft 37, and the first tongue portion 33 a and the second tongue portion 35 are A recess 43a is defined on one side in the rotational axis direction. Others are the same as the said Example.

  FIG. 7 is a cross-sectional view of a coupling portion according to another modification.

  In the modified example of FIG. 7, the ends of the convex curved surfaces 39a, 39b of the first tongue portions 33a, 33b, which are mating surfaces of the coupling portion 5, in the direction of the rotational axis are slip surfaces at the portions adjacent to the slide surfaces 9a, 9b. 9a and 9b are located on a plane deviated inward in the direction of the rotation axis from the same plane. Others are the same as the said Example.

  Therefore, also in the modified examples of FIG. 6 and FIG.

DESCRIPTION OF SYMBOLS 1 Needle holder 3a, 3b Main body part 5 Coupling part 7 Elastic member 9a, 9b Sliding surface 11a, 11b Gripping part 13a, 13b Handle part 15a, 15b One end part (gripping part: distal)
27a, 27b The other end (handle: distal)
39a, 39b Convex surfaces 45a, 45b Concave surfaces

Claims (5)

A needle holder for holding a medical suture needle,
A pair of side-by-side rod-shaped body parts;
A gripping portion provided on one end side in the longitudinal direction of the main body,
A handle provided on the other end of the main body in the longitudinal direction;
A coupling portion that is provided on the inner surface of the main body portion facing between the grip portion and the handle portion and is coupled to the main body portions so as to be relatively rotatable;
An elastic member attached between the handle parts of the main body part and separating the handle parts from each other and contacting the gripping parts with each other;
The longitudinal dimension from the distal end of the handle to the joint to the axis of rotation of the joint is determined by the rotation of the joint from the distal end of the grip to the joint. Longer than the dimension in the longitudinal direction to the axis,
A needle holder characterized by that. The needle holder according to claim 1,
The main body has a sliding surface for sliding a suture thread in at least one of the directions along the rotational axis;
The sliding surface is continuous across both sides of the coupling portion;
A needle holder characterized by that. The needle holder according to claim 1 or 2,
The coupling portion has a mating surface that matches the main body portions with each other in a direction in which the main body portions are provided.
The mating surface is along the rotational axis only on a surface that is flush with the sliding surface at a portion adjacent to the sliding surface or on a surface that is biased inward in the direction along the rotational axis from the surface. Having an end in the direction,
A needle holder characterized by that. The needle holder according to claim 3,
The mating surface is a curved surface having a center of curvature coinciding with the rotation axis.
A needle holder characterized by that. The needle holder according to any one of claims 1 to 4,
The coupling portion is provided within the range of the inner surfaces of both the main body portions in a direction along the rotation axis.
A needle holder characterized by that.

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