JPH0584251A - Sewing-up needle with thread - Google Patents

Abstract

PURPOSE:To provide the sewing-up needle with a sewing-up thread, which can execute simply a caulking work, and also, facilitates a correction, etc., of a circular arc shape executed at the time of finishing, and moreover, can pierce smoothly. CONSTITUTION:In a semicircular arc-like sewing-up needle 1 with a thread, a hole part 6 is subjected to diameter reduction by a first caulking part 7 and a second caulking part 8, and a sewing-up thread 5 is caulked in the hole part 6. A first caulking part 7 presses the inside and the outside surfaces of a base end part 4 continued from both flat faces 9a, 9b of a grip part 9 and forms a pair of flat faces continued to both the flat faces 9a, 9b of the grip part 9. A second caulking part 8 forms the base end part 4 positioned in the outside of the hole part 6 by pressing it from both sides in the direction being orthogonal to the pressing direction of a first caulking part 7. Dimensions in the diameter direction of both the caulking parts 7, 8 are both smaller than dimensions in the diameter direction of the grip part 9.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suture needle formed in a semi-arcuate shape, which is particularly used in surgical operations and the like, and relates to a suture needle with a thread in which a suture thread is caulked and connected to a proximal end portion thereof. ..

[0002]

2. Description of the Related Art Conventionally, suture needles used for surgical operations are
A so-called eyeless needle in which a suture is crimped at its proximal end is known. This type of suture needle B is shown in FIG.
As shown in (a), the caulking portion 50 formed at the base end portion.
And a grip portion 51 formed adjacent to the crimp portion 50 and having flat upper and lower surfaces for gripping by a needle holder or the like (not shown). The caulking portion 50 has a suture thread attachment hole portion 53 formed in the longitudinal direction from a proximal end edge 52 of the suture needle B. The hole 53 is generally processed by irradiating a laser beam or grinding a drill. In order to facilitate such processing, the hole 5
The crimp portion 50 corresponding to No. 3 has a relatively large diameter.

Then, when the suture thread 54 is inserted into the hole portion 53, as shown in FIGS. 5B and 5C, the crimp portion 50 is crimped to be uniformly reduced in diameter, and accordingly, the hole The diameter of the portion 53 is also reduced. As a result, the suture thread 54 in the hole 53 is fixed to the proximal end of the suture needle B. Further, at this time, the bottom portion 55 of the hole portion 53 is not pressed and the tip of the suture thread 54 in the hole portion 53 is opened, thereby preventing the suture thread 54 from coming out of the hole portion 53.

The caulking portion 50 is, for example, as shown in FIG.
As shown in (d), a pair of semi-circular pressing dies 56, 5
It is crimped by being pressed by 7.

However, at the time of crimping by the pressing dies 56, 57, the parts 58, 5 where the pressing dies 56, 57 contact each other.
A part of the crimped portion 50 is likely to project from 9 and the swaging needle B or the pressing dies 56, 57 must be swung while rotating in order to prevent this projecting, which is troublesome.

After crimping the crimping portion 50, as shown in FIG.
As shown in (b) and (c), the large-diameter portion 60 remains in the vicinity of the grip portion 51, and in particular, it has a highly accurate arc shape that is used in the finishing process of a semi-arcuate suture needle for surgical operation. It is difficult to bend the large-diameter portion 60 at the time of making a correction such as bending, and the correction is difficult. Furthermore, there is a disadvantage that smooth penetration is hindered by the large-diameter portion 60.

[0007]

By solving such a problem, the present invention makes it possible to easily perform the crimping work, to easily correct the arc shape which is performed in the finishing process, and to pierce smoothly. An object of the present invention is to provide a suture needle with a suture thread.

[0008]

In order to achieve the above object, the present invention comprises a sharp needle tip provided at the tip of a body portion formed in a semi-arc shape and a base end edge of the body portion. Attachment holes for sutures formed in the longitudinal direction of the body, sutures crimped into the holes, and a pair of semicircular inner and outer surfaces of the body along the longitudinal direction of the body. In the suture needle with a thread, which has a flat surface and is fixed in the direction of the needle tip when gripped by a needle holder or the like, a suture thread is inserted into the hole portion, and A first caulking portion having a pair of flat surfaces formed by pressing the inner and outer surfaces of the base end portion that are continuous from the flat surface in the longitudinal direction to reduce the diameter of the hole portion and being continuous with both flat surfaces of the grip portion; By pressing the base end of the body located outside the part from both sides in a direction orthogonal to the pressing direction of the first caulking part. Parts and the second caulking portion is provided with a reduced diameter a, wherein the radial dimension of the both crimping portion is less than the radial dimension of any gripper.

Further, according to the present invention, the second caulking portion is such that a base end portion of the body portion, which is located outside the hole portion except a portion near a bottom portion of the hole portion, is orthogonal to a pressing direction of the first caulking portion. It is preferable to press both sides in the direction to form a suture thread retaining portion at the bottom of the hole by the pressing.

[0010]

In the suture needle of the present invention, when the suture thread is inserted into the hole, the suture thread is connected to the proximal end portion by the first crimp portion and the second crimp portion.

The first caulking portion is formed by continuously pressing a flat portion of the gripping portion on opposite sides of the body portion at the base end portion thereof. As a result, the first crimped portion is formed in the same shape as the grip portion, the diameter of the hole is reduced, and the suture thread is supported in the hole.

The second caulking portion is formed by pressing the base end portion of the body portion from both sides in a direction orthogonal to the pressing direction of the first caulking portion.

As a result, the first caulking portion is pressed and formed in the same shape as the grip portion, and the second caulking portion is pressed and formed from both sides in the direction orthogonal to the pressing direction of the first caulking portion. Therefore, the radial dimension of both caulking portions is smaller than the radial dimension of the grip portion, and smooth piercing is possible.

Further, preferably, when forming the second caulking portion, the portion corresponding to the bottom portion of the hole portion is not pressed, and the portion reduced in diameter by the first caulking portion and the first portion are formed at the bottom portion of the hole portion. (2) A step for preventing the suture from coming off is formed by a step difference with the portion reduced in diameter by the crimped portion. That is, since the tip of the suture thread inserted into the bottom of the hole is subjected to the diameter reduction by the first caulking portion, it is not subjected to the diameter reduction by the second caulking portion, so that the first caulking portion and the second caulking portion are used. The outer diameter of the tip of the suture at the bottom of the hole is larger than the outer diameter of the suture in the reduced diameter hole. This prevents the suture from falling out of the hole.

[0015]

An embodiment of the present invention will be described with reference to the drawings.

The suturing needle 1 of this embodiment is used for a surgical operation or the like, and as shown in FIG. 1, a body portion 2 formed in a semi-arcuate shape.
Sharp tip 3 provided at the tip of the body and the base end 4 of the body 2.
And a mounting hole portion 6 for the suture thread 5 that is formed in the longitudinal direction of the body portion 2. The suture thread 5 inserted in the hole 6 is caulked by the first caulking portion 7 and the second caulking portion 8 which will be described later. Further, the grip portion 9 is provided so that the direction of the needle tip 3 is fixed when the body portion 2 is gripped by a needle holder (not shown) or the like. The grip 9
Is provided with a pair of flat surfaces 9a, 9b formed on the inner and outer surfaces of the body 2 in the shape of a semi-circle along the longitudinal direction of the body 2. In addition, the suture needle 1 in a state in which the suture thread 5 is not connected
In order to facilitate the processing of the hole 6 by irradiating a laser beam or grinding a drill, as shown in FIG. The outside of the position corresponding to the hole 6 is formed to have a relatively large diameter.

As shown in FIGS. 2 (a) and 2 (b), the first caulking portion 7 has the suture thread 5 inserted into the hole portion 6,
As shown in FIG. 3, both flat surfaces 9a and 9b of the grip portion 9 are formed.
Is formed by pressing the inner and outer surfaces of the base end portion 4 continuous with the above in the directions indicated by arrows a and b in the figure. By this pressing, the diameter of the hole 6 is reduced and the suture thread 5 is caulked. Further, due to this pressing, both flat surfaces 9 of the grip portion 9 are
a pair of flat surfaces 7a, 7b continuous with a, 9b
Formed in. As a result, the width dimension between the two flat surfaces 7a, 7b of the first caulking portion 7 is determined by the two flat surfaces 9a, 9b of the grip portion 9.
It becomes equal to the width dimension between b.

The second caulking portion 8 is shown in FIG. 4 (a).
And as shown in (b), by pressing the suture thread 5 by the first caulking portion 7, by pressing in the directions shown by arrows c and d in the drawing orthogonal to the pressing direction of the first caulking portion 7, It is formed. Further, the position to be pressed at this time is the hole 6
The base end portion 4 of the body portion 2 is located outside the hole portion 6 except for the vicinity of the bottom portion 6a. By this pressing, the diameter of the hole 6 is further reduced, the suture thread 5 is caulked, and the outer side corresponding to the hole 6 is also reduced in diameter. Then, due to this pressing, the bottom 6a of the hole 6 is secured to the retaining portion 6b of the suture thread 5b.
Is formed. The retaining portion 6b is reduced in diameter by the first caulking portion 7, but is not reduced in diameter by the second caulking portion 8. As a result, as compared with the suture thread 5 in the hole 6 at the position where the diameter is reduced by both the first crimping portion 7 and the second crimping portion 8, the retainer formed on the bottom portion 6a of the hole portion 6 is prevented. In the portion 6b, the outer diameter of the tip of the suture thread 5 is large. Therefore, the suture thread 5 can be securely fixed to the hole 6 by the stopper portion 6b without falling off from the hole 6.

As described above, the suture thread 5 can be securely fixed to the proximal end portion 4 of the suture needle 1 only by forming the first caulking portion 7 and the second caulking portion 8, and Since the radial dimension of both of the crimped portions 7 and 8 is smaller than the radial dimension of the grip portion 9, it is possible to realize smooth penetration without forming a conventional thick portion. You can Further, since the large-diameter portion is not formed, for example, it is easy to correct the arcuate shape of the base end portion 4 performed in the finishing process of the suture needle 1.

In this embodiment, as shown in FIGS. 4 (a) and 4 (b), the bottom 6a of the hole 6 is formed with the retaining portion 6b for the suture thread 5. However, the second caulking portion is used. 8 is formed without forming the retaining portion 6b.
It is needless to say that even if the outer side of the hole 6 including the vicinity portion is evenly pressed, the suture 5 is prevented from falling out by making the pressing relatively strong.

[0021]

As is apparent from the above, according to the present invention, the suture thread is securely fixed to the proximal end portion of the suture needle only by forming the first crimp portion and the second crimp portion. can do. As a result, at the time of the work of crimping the suture to the proximal end, the work of crimping the suture can be easily performed without rotating the suture needle or the pressing die as in the conventional case.

Further, since the radial dimension of each of the crimped portions is smaller than the radial dimension of the grip portion, a large-diameter portion is not formed unlike the conventional case.
It is easy to correct the arc shape and the like, which are performed in the finishing process of the semi-arcuate suture needle, and the needle can be pierced smoothly.

[Brief description of drawings]

FIG. 1 is an explanatory view showing a suture needle of one embodiment.

FIG. 2 is an explanatory view showing a proximal end portion of a suture needle in a state in which a suture thread is not attached.

FIG. 3 is an explanatory view showing a proximal end portion of a suture needle in a state in which a suture is crimped.

FIG. 4 is an explanatory view showing a proximal end portion of a suture needle in a state where a suture thread is caulked.

FIG. 5 is an explanatory view showing a conventional suture needle.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Suture needle, 2 ... Body part, 3 ... Needle point, 4 ... Base end part, 5 ... Suture thread, 6 ... Hole part, 7 ... First caulking part, 8 ... Second caulking part, 9 ... Gripping part, 6b ... retaining portion, 7a, 7b, 9
a, 9b ... Flat surface.

Claims (2)

[Claims] 1. A sharp needle tip provided on the tip of a semi-arcuate body portion, and a suture attachment hole formed in the longitudinal direction of the body portion from the base end edge of the body portion. And a suture thread crimped into the hole, and a pair of flat surfaces formed on the inner and outer surfaces of the semicircular arc of the body along the longitudinal direction of the body, and the needle when grasped by a needle holder or the like. In a suture needle with a thread, which comprises a grip portion whose tip direction is fixed, a suture thread is inserted into the hole portion so that the inner and outer surfaces of the base end portion continuous from both flat surfaces of the grip portion in the longitudinal direction. The first caulking portion is formed by pressing to reduce the diameter of the hole portion and a pair of flat surfaces continuous with both flat surfaces of the grip portion, and the base end portion of the body portion located outside the hole portion to the first A second caulking portion that presses from both sides in a direction orthogonal to the pressing direction of the one caulking portion to reduce the diameter of the hole is provided. Thread with needle, wherein the radial dimension is less than the radial dimension of the gripper both. 2. The second caulking portion is formed from both sides in a direction orthogonal to a pressing direction of the first caulking portion with a base end portion of the body portion located outside the hole portion except a portion near a bottom portion of the hole portion. The suture needle with thread according to claim 1, wherein the suture thread retaining portion is formed by pressing, and the retaining portion for the suture thread is formed at the bottom of the hole by the pressing.