JPH0947457A - Needle for buried suture and auxiliary tool for buried suture and buried suture operation method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a needle for buried suture which can be inexpensively manufactured and by which suture can be easily and quickly performed without requiring an advanced suture technology and which has strong joining force and by which a scar after operation becomes inconspicuous without reqiring extraction of the stitches and extraction of the needle. SOLUTION: In a needle C for buried suture, the whole shape presents a spiral coil shape, and the tip 30 is sharply pointed. When the needle C for buried suture is installed in an elastic holding part 34 of an auxiliary tool 32 for suture, three elastic pieces 33 are picked by fingers 42 to 44, and an outside diameter is thinned, and is fitted in an inner peripheral part 31b of the needle C for buried suture, and gripping force applied to the three fingers 42 to 44 is loosened. Then, the eleastic pieces 33 are strongly brought into pressure contact with the inner peripheral part 31b of the needle C for buried suture by its expansively pressing elastic force, and hold them. When suture is performed, a gripping part 35 is picked by the three fingers 42 to 44, and while pressing the tip 30 of the needle C for buried suture against a suture part, the gripping part 35 is rotated, and is screwed in up to a necessary depth.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an embedded suture needle used during surgery, an embedded suture auxiliary tool, and an embedded suture operation method using the embedded suture needle.

[0002]

2. Description of the Related Art Conventionally, as a method of closing a wound after an incision operation, firstly, a silk knot suturing method of suturing the wound with a silk thread is used. Secondly, in this knot suturing method, the silk thread is replaced with nylon. Nylon knot stitching method to sew up
Nylon knot stitching method with needle that uses nylon thread with needle in advance, and fourth, when suturing with nylon with needle, insert nylon thread into the tissue so that the thread is not exposed on the tissue surface. A needle embedded nylon suture method of burying and suturing, and fifth, a skin stapler method of picking a wound and stopping the stop needle with a single touch using a stapler-shaped instrument have been adopted.

[0006] Sixth, it was devised as an improvement of the needle embedded nylon suturing method. Instead of needle attached nylon,
A synthetic absorbent yarn-embedded suturing method in which a synthetic absorbent yarn is embedded in the tissue and sutured so that the yarn is not exposed to the surface of the tissue is being adopted. In addition to the above method, as a seventh method, as described in Japanese Utility Model Publication No. 60-25213, a linear shaft portion has conical pointed portions at both ends, Using a relatively hard surgical wound closure structure in which a step is formed between the ridge and the pointed head, and the entire body is integrally formed of an absorbable substance such as collagen, the tissue on both sides of the wound after surgery is used. A method of burying and suturing an absorbent structure in which tissues on both sides are brought together and joined to each other so that the wound is raised is proposed.

[0004]

However, the above-mentioned first silk thread knot suturing method has a drawback in that it requires a long time for the operation, takes time for removing the thread, and causes a tissue reaction to the silk thread to leave an ugly scar. Have Further, although the second nylon knot suturing method uses nylon thread, which has less tissue reaction than silk thread, it does not leave a scar, and problems such as operation time and labor for removing the thread are solved in the same manner as the silk thread knot suturing method. It has not been.

The third method of suturing nylon knots with needles is a method that is currently widely used. Since the diameter of the needle is not larger than the diameter of the nylon thread, the living tissue is not unnecessarily expanded during suturing. Although there are advantages, scars, surgery time,
Problems such as the trouble of removing the thread remain. The fourth needle-embedded nylon embedded suture method is less likely to leave a scar on the surface of the tissue like the above-mentioned needle-attached nylon knot suture method, but requires advanced suturing technology and is troublesome to remove the thread. The problem remains.

Further, the fifth skin stapler method does not require an advanced suturing technique and requires a short operation time,
The scars are relatively minor, but there is the problem that the time and effort required to pull out the needle remain and the pain when pulling out the needle is great. In the sixth synthetic absorbent yarn embedded suture method, the synthetic absorbent yarn is absorbed into the tissue with the passage of time, which saves the labor of removing the yarn.
Although scars are hardly noticeable, there is a problem that the above-mentioned advanced suturing technique is required.

In the absorbent structure burying and suturing method proposed in Japanese Utility Model Publication No. 60-25213, since the structure is not exposed on the surface of the tissue, no scar is left and the structure is made of an absorbent material. Therefore, there is no need to remove the needle. Moreover, it has the advantage that it does not require advanced technology and does not require a long operation time. However, the structure proposed in the above publication not only damages the tissue unnecessarily because the maximum diameter of the cusps is considerably larger than the shaft diameter, but the step portion is perpendicular to the axis, Since there is only one, there is a drawback that the joining force (suture force) is poor.

Further, since the shaft portion extends straight, when the tissue parts to be joined have an arcuate shape, when the tissue on both sides of the wound is pierced, the pointed portions are likely to project onto the tissue surface, and the burying work is not always easy. Not. Further, since this structure does not deform, when the tissue is moved after being buried, an excessive force is applied to the tissue, causing pain and damaging the tissue.

The present invention has been made in view of the above circumstances, and an object thereof is to be able to smoothly pierce the tissue of the wound after surgery and to exhibit an appropriate bonding force at a certain depth position of the tissue. In addition, it is easy to suture (join) without unnecessarily damaging the wound at the time of joining, the operation time is extremely short, it has a strong joining force, there is no pain after joining, and there is no thread removal or needle removal. It is an object of the present invention to provide an embedded suture needle that does not need to be seen, and scars after surgery are extremely inconspicuous, an embedded suture auxiliary tool used for suturing with the needle, and an embedded suture operation method using the needle.

[0010]

In order to achieve the above object, the buried suture needle according to the invention of claim 1 is such that at least half of the shaft portion is curved, and both ends of the shaft portion are pointed. And a non-return locking portion formed of a plurality of flexible one-way pointed locking pieces having a shape and having outer circumferences at both ends of the shaft portion, the whole being made of an absorbent material. To do. In the buried suture needle according to the invention described in claim 2, at least the middle portion of the shaft portion is thin in the normal direction standing on the curved surface and thick in the width direction orthogonal to the normal line. It is characterized in that it is formed into a shape.

Further, in an embedded suture operation method using an embedded suture needle according to a third aspect of the present invention, at least a half portion of the shaft portion is curved, and both ends of the shaft portion are pointed, and An intermediate portion of the embedded suture needle, which is provided with a non-return locking portion composed of a plurality of flexible one-way pointed locking pieces on the outer circumferences of both ends of the shaft portion and is entirely made of an absorbent material Grasp the needle with a needle holder and pierce the tissue on both sides of the wound after incision surgery according to the curved shape of the tissue, and then remove the needle holder and bring both sides of the wound closer to each other. It is characterized by joining together.

Further, the buried suture needle according to the invention of claim 4 has a spiral coil-shaped overall shape, a tip is formed into a pointed needle shape, and a body portion in which at least the length in the central direction is incised. The length is the length required for suturing, and the whole is made of an absorbent material.

Further, in the buried suture needle according to the invention of claim 5, the absorbable substance is polyglycolic acid, polylactolic acid, a mixed substance of polyglycolic acid and polylactolic acid, polycaprolactone, polydioxanone, collagen. Alternatively, it is one kind of substance selected from the group consisting of chitin.

Furthermore, a buried suture needle according to a sixth aspect of the present invention has a body in which the entire shape is a spiral coil shape, one end is formed into a pointed needle shape, and the length in the central direction is at least incised. Suture auxiliary tool for holding an embedded suture needle having a length required for suturing a portion and entirely made of an absorbent material, and screwing the embedded suture needle into a suture portion of a body during suturing operation The one end has an elastic holding portion that fits into the inner peripheral portion of the embedded suture needle and can hold the embedded suture needle by a spreading elastic force in a natural state, and the elastic end portion on the other end side. The elastic holding portion has a rigid grip portion that is connected to the holding portion, and is fitted in the embedded suture needle in a state where the elastic holding portion is bent inward with an external force so as to reduce the diameter and the external force is applied. By releasing, the elastic holding part holds the embedded suture needle. Because, by rotating by hand the grip portion, it is characterized in that constitute the buried suture needle to get screwed to the body seamed portion.

[0015]

In the buried suture needle according to claim 1 configured as described above, at least a part of the shaft portion is curved in an arc shape so that a high degree of skill is required for the incision portion of the body which is arcuate. Without it, it can be easily stabbed by grasping with a needle holder, and further provided with a non-return locking part composed of a plurality of flexible one-way pointed locking pieces on the outer circumference of both ends of the shaft part. As a result, the pointed locking piece, which has flexibility when piercing the tissue, falls down so as to come into close contact with the shaft, so that it does not damage the tissue more than necessary and the force with which the embedded suture needle tries to come out of the tissue. When works, the one-way pointed locking piece spreads, pierces deep into the tissue, and exerts a strong bonding force (suture force).

Further, by making the cross section of the buried suture needle thin and flat in the direction normal to the curved surface, the needle can be easily picked by the pointer and the operability is greatly improved. At the same time, even if the tissue works after suturing, the shaft moves according to the tissue, so that pain is reduced and damage to the tissue is reduced.

In addition, the embedded suture needle according to claim 4 configured as described above has a spiral coil shape as a whole and the tip is formed in the shape of a pointed needle. When is pressed against the part of the body to be sutured and rotated in the spiral direction, the tip of the needle is screwed in from the surface of the body toward the core. When the needle reaches the depth required for suturing, cut the needle at the position where the end of the needle slightly projects. As a result, the incised body is sewn in a loop shape between both side tissues, and a binding force (suture force) is exerted.

Further, the absorptive substance which constitutes the material of the needle for suturing a suture is polyglycolic acid, polylactolic acid, a mixed substance of polyglycolic acid and polylactolic acid, polycaprolactone, polydioxanone, depending on the time required for joining. There is no need to remove the needle because the implantable suture needle will be absorbed by the tissue after the tissue after surgery is joined by selecting from substances such as collagen or chitin.

In the case of the buried suture needle according to the above-mentioned claim 3, for piercing the tissue on both sides of the wound after surgery according to the curved portion of the needle and the curved shape of the tissue, and joining them together. Since the needle is buried in a direction along the same tissue, the tissue is less damaged and the patient is less likely to feel pain. If various kinds of needles having different radii of curvature of the curved portion of the shaft portion are prepared, the needle can be used according to the curved shape of each tissue, and this effect is further improved.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a front view of an embedded suture needle according to a first embodiment of the present invention, and FIG. 2 is a plan view of the same embodiment. In FIGS. 1 and 2, the embedded suture needle A according to the first embodiment is made of glycolic acid as a material thereof, and has an arcuate shape as a whole when viewed from the front, and the intermediate shaft portion 1 has an embedded suture. The intermediate portion of the needle A is grasped by a needle device and has a rigidity such that it can be pierced into a body tissue, and has flexibility enough to absorb a movement of the body in a thin direction (a bending direction described later). It is formed to have a wall thickness.

For example, as the total length of the embedded suture needle A,
10 to 40 mm, thickness (dimension in the direction normal to the curved surface, vertical dimension in FIG. 1) is 1 to 3.5
mm, width (vertical dimension in FIG. 2) is 2.
A size of 5 to 5.5 mm is practical. At both ends 2 and 3 of the shaft portion 1, there are provided non-return locking portions 6 and 7 composed of a plurality of one-way pointed locking pieces 4 and 5. The radius of curvature of the curved portion is prepared in various sizes according to the surgical site, incision depth and the like. In this embodiment, it is set to about 60 mm.

When the embedded suture needle A is pierced into the incised body tissue, the one-way pointed locking pieces 4 and 5 fall in the direction along the surface of the shaft portion 1 and substantially contact the shaft portion 1. On the other hand, when a force acts in the direction of coming out of the tissue, the tip of the tip has a thinness that has flexibility such that it rises from the peripheral surface of the shaft portion 1 and pierces the tissue to exert a non-return effect. It is sharply pointed.

In such a buried suture needle A, a synthetic absorbent suture material made of liquefied glycolic acid is press-fitted into a molding die, waits for the synthetic absorbent suture material to harden, and is taken out from the die. The end is ground sharply. Next, a buried suture operation method for suturing the tissue after the incision operation with the buried suture needle A having such a configuration will be described.

FIG. 3 is an explanatory view showing a part of a body, for example, a tissue in a state in which an abdominal part which bulges outwardly and has an arcuate shape is subjected to an incision and is partially cut away. In FIG. 3, 10 is epidermis, 11 is dermis, 12 is subcutaneous tissue, 13 is fat layer, 14 is
Is the muscle layer. Reference numeral 9 is a wound that has been opened by an incision operation. The buried suture needle A has a needle holder 8 and a shaft portion 1
The suturing operation is performed in a state where it is sandwiched in the center in the thickness direction (vertical direction in FIG. 1).

That is, the left half of the embedded suture needle A sandwiched by the needle holder 8 is pierced into the subcutaneous tissue 12, which is the tissue on one (left) side of the wound 9. Next, while being pinched by the needle holder 8, the other side (right side) of the subcutaneous tissue 12 is pushed to the left side to puncture the middle region of the right half of the embedded suture needle A, and thereafter,
The needle holder 8 is taken out from the embedded suture needle A, the tissues on both sides of the wound 9 after the surgery are brought close to each other, and further, until the site of the wound 9 is raised, the wound Join 9.

Such sutures have a predetermined interval, for example,
The distance is 5 mm, and the dermis 11 near the surface and the subcutaneous tissue 12 or the muscle layer 14 at a deep portion are provided depending on the depth of the wound.
As in the above, the embedded suture needle A may be inserted in two or three steps. In this way, since the embedded suture needle A used for the embedded suture is made of glycolic acid, it is hydrolyzed over a predetermined time and absorbed into the body.
There is no need to remove the needle.

As described above, according to the first embodiment, it is possible to provide the embedded suture needle A having the following effects. That is, first, both end portions 2 and 3 are flat and sharply pointed, and the one-way pointed locking pieces 4 and 5 constituting the non-return locking portions 6 and 7 are sharp and flexible. Since it has fallen in the inserting direction and contacts the outer periphery of the shaft portion 1, the wound cross section due to the insertion of the embedded suture needle A is sufficiently small.
As compared with the structure described in Japanese Patent No. 213, the one-way pointed locking pieces 4 and 5 are shrunk when the force is exerted in the direction in which the embedded suture needle A is removed from the tissue, with less damage to the tissue. Since it stands up from 1 and penetrates deeply into the tissue, it does not have the drawback of being easily pulled out as in the above-mentioned publication, and a strong joining force can be maintained.

Secondly, since the buried suture needle A has an arcuate shape when viewed from the front, for example, the surface layer portion of its cross section such as the trunk, upper limbs, lower limbs, and neck is In the case of suturing in an incision operation on a portion that is curved in an arc shape, the buried suture needle A is fixed at a certain depth in the body by making the radius of curvature of the body surface layer correspond to the radius of the curved portion of the buried suture needle A. Since it is buried in the deep position, it is easy to adjust the bonding time of the wound and the absorption time of the buried suture needle A into the tissue, and the bonding of the wound is further stabilized. In other words, absorbent materials may have different absorption rates depending on the tissues of the body, and
This is because it is desirable to bury them in the same tissue.

Further, when the needle is curved, there is an advantage that the embedded suture needle A can be easily pierced even if the space in the deep layer of the incised tissue is small. Thirdly, since the embedded suture needle A is formed such that at least the middle portion of the shaft portion 1 has a small thickness, a large width, and a flat cross-section rectangular shape, it is held in a fixed direction by the needle holder 8. In addition to the advantage that the suturing operation is easy, even immediately after the embedded suture needle A is embedded, since it is thin and flexible in the thickness direction,
Even when the tissue near the surface layer of the sutured portion is deformed as the body moves, the embedded suture needle A is also deformed according to the movement of the body, so that it has a high rigidity like the closed structure described in the above publication. Compared with the ones, there is an advantage that the damage to the subject is significantly reduced.

Next, a second embodiment of the present invention will be described in detail with reference to FIGS. 4 and 5. FIG. 4 is a front view of a buried suture needle according to a second embodiment of the present invention, and FIG.
It is a top view of the example. 4 and 5, the buried suture needle B according to the second embodiment is formed of an absorbent substance made of polydioxanone, and the left half is curved in an arc shape and the right half is seen from the front direction. Differs from the embedded suture needle A of the first embodiment in that it has a substantially linear shape.

Dimensionally, the length is 20 mm and the shaft portion 21 is
The dimension of the cross-sectional shape of the central part of the is 1.5 mm in thickness (vertical dimension in FIG. 4) and 3 mm in width (dimension in the direction perpendicular to the paper surface in FIG. 4), which is similar to that of the first embodiment. The shaft portion 21 has a rectangular cross section. The radius of curvature of the curved portion (left half) 28 of the embedded suture needle B is approximately 4
It is set to 0 mm. Ends 22 and 2 on both sides of the shaft 21
The third embodiment is similar to the first embodiment in that the non-return locking portions 26 and 27 including the plurality of one-way pointed locking pieces 24 and 25 are provided.

The radius of curvature of the curved portion 28 is prepared in various sizes according to the surgical site, the incision depth, the suture tissue, and the like. When the embedded suturing needle B is projected into the incised body tissue, the one-way pointed locking pieces 24, 25 fall along the surface of the shaft portion 21 and substantially contact the shaft portion 21, while When a force acts in the direction of coming out of the tissue, it rises from the outer surface of the shaft portion 21 and pierces the tissue to exert a non-return effect, similar to the case of the buried suture needle A of the first cited example.

Regarding the embedded suture operation method of suturing the tissue after the incision operation using the embedded suture needle B of the second embodiment having the above-mentioned structure, the embedded suture needle A of the first embodiment is used. There is no fundamental difference with the method of doing. That is, the needle device 8 grasps the thin thickness direction in the middle of the shaft portion 21 of the buried suture needle B with the needle device 8, first punctures the curved portion 28 side into the tissue on the left side, and then forms a straight line shape. The right end to be presented is pierced into the right tissue, and then the needle holder 8 is released from the grasped state of the embedded suture needle B and removed from the incision portion, and the subsequent procedure is the same as in the first embodiment described above. Do the same as in the case.

A second constructed and operative as described above.
According to the embedded suture needle B according to the embodiment, the embedded suture needle A is used.
The same effect as that described above is achieved. Depending on the surgical site, the embedded suture needle B may be more convenient than the embedded suture needle A. That is, it is suitable for suturing a portion (for example, a flank) where a flat surface and a curved surface are continuous.

Next, a third embodiment of the present invention will be described in detail with reference to FIGS. 6, 7, 8 and 9. Figure 6
Is a perspective view of a buried suture needle according to a third embodiment of the present invention,
FIG. 7 is a perspective view of an embedded suture needle according to a modification of the third embodiment, and FIG. 8 is an auxiliary device for embedded suture for performing suturing operation by mounting the embedded suture needle of the third embodiment of the present invention. It is a perspective view for explaining how to use a tool.

In FIGS. 6 and 7, a buried suture needle according to the third embodiment (hereinafter, simply referred to as “suture needle”) is made of an absorbable material made of polyglycolic acid and has an overall shape of 3 mm in diameter. A body part that has a spiral coil shape of about 20 mm and has at least a tip (bottom end in FIG. 6) 30 formed into a pointed needle shape and having a length L in the center direction (vertical direction in FIG. 6) at least incised is joined The length required for suturing in this state, for example, at least 2 mm or more is required.

The length L and the number of turns can be changed depending on the surgical site. The number of turns may be three as shown in FIG. 6 or two as shown in FIG. As shown in 8, there are several windings, and the length is not limited to one suture operation,
The length may be set to the length of several suturing operations. The wire diameter (thickness) of the spiral coil is about 0.2 mm to 2 mm, and the pitch is
A size of 1 mm to 15 mm is suitable.

Next, as the simplest method of using the suturing needle thus constructed, the spiral coil-shaped outer peripheral portion 31a of the suturing needle B is grasped, and the suture needle B is attached to the incised portion of the body. This is a method in which the tip end 30 is pressed and a rotational force (clockwise rotational force in FIGS. 6 and 7) is applied to the outer peripheral portion 31a to screw it in. The second method is a method using the buried suture assisting tool (hereinafter referred to as "suture assisting tool") according to the present invention shown in FIG.

This suturing aid 32 can be fitted to the inner peripheral portion 31b of the suturing needle C at one end side (the lower end side in FIG. 8), and the outer diameter of the suturing auxiliary tool 32 is The elastic holding portion 34 is made up of three elastic pieces 33 that have elasticity and expand larger than the inner diameter of the peripheral portion 31b. In order to fit the elastic holding portion 34 into the inner peripheral portion 31b of the suturing needle C, the three elastic pieces 33 are attached to the thumb 42 and the index finger 4.
3 and the middle finger 44 (grip), and the fingers 42 to
It suffices to fit the inside of the inner peripheral portion 31b of the suturing needle C in a state in which a force is applied to 44 and to bend it inward, and release the inward force applied to the finger.

The suturing aid 32 further has a rigid cylindrical grip portion 35 in which the base ends of the elastic pieces 33 are integrally connected. A knurl 36 is formed on the outer peripheral portion of the grip portion 35 to prevent slipping between the fingertip and the grip portion 35. A pressing rod 37 extends upward from the center of the grip portion 35, and the tip end (upper end in FIG. 8) of the pressing rod 37 is
A palm rest member 38 is rotatably attached to the pressing rod 37.

Next, the suture assisting tool 3 thus constructed.
The method of using 2 will be described in more detail. First, for example,
A suture needle C having a length required for two to several suturing operations is prepared, and the three elastic pieces 33 of the suturing aid 32 are attached to the thumb 4.
2, pinch with the index finger 43 and the middle finger 44, and apply force to each of the fingers 42 to 44 inward to bend the elastic piece 33 inward and reduce the diameter, and in that state, the elastic piece 33 for suturing The inward force applied to the fingers 42 to 44 after being fitted inside the needle C is released.

Then, the expanding elastic force of the elastic piece 33 causes the outer peripheral part of the elastic piece 33 to strongly press the inner peripheral part of the suture needle C,
The elastic holding portion 34 firmly holds the suture needle C. Then 3
With the fingers 42 to 44, the grasping portion 35 on which the knurling 36 is engraved is grasped, and the tissues on both sides of the incision portion 39 subjected to the incision surgery of the body as shown in FIG. 9 are brought close to each other. In the combined state, the center of the spiral of the suturing needle C is positioned so as to substantially coincide with the incision line 40, and the tip portion 30 is pierced into the body.

When the grip portion 35 is rotated by the three fingertips, the rotational force is transmitted to the inner peripheral portion 31b of the suturing needle C as a frictional force via the outer peripheral portion of the elastic holding portion 34, and the tip 3
While 0 moves toward the deep tissue of the body while rotating, the spiral coiled portion of the suture needle C also gradually advances deeply so as to be guided to the tip 30. Incision 39
When the tip 30 reaches the depth (for example, subcutaneous tissue 12) required to suture the needle, the upper portion of the suture needle C exposed from the epidermis 10 is cut with a cutting tool such as a sharp nipper. It is used to cut and remove in the vicinity of the epidermis 10.

The new tip of the portion of the suture needle C thus removed becomes the tip 30 in the next suturing operation. On the other hand, the buried suture portion of the suturing needle C screwed into the incision portion 39 is made of glycolic acid, and therefore is hydrolyzed and absorbed in the body over a predetermined time.

According to the suturing needle C of the third embodiment having the above-described structure and functioning, it is possible to provide a buried suturing needle which can exert the following various effects. First
In the suturing needle C according to the third embodiment, the center of the needle C is substantially aligned with the incision line 40 in a state where the incised portions 39 incised by the incision operation are brought close to each other. Position it, pierce the tip 30 and attach the grip 35 to the thumb 4
2. Since only the operation of picking and rotating the index finger 43 and the middle finger 44 is necessary, the buried suture operation, which originally required a high technique, can be performed very easily and quickly without any failure without a high suture technique. be able to.

Second, the trace of the suturing operation with the suture needle C is
Since only one of the needle marks 41 having the thickness of the needle C remains, the scar can be made almost inconspicuous. Thirdly, the suturing needle C includes the epidermis 10 to the dermis 11 or the subcutaneous tissue 1.
Since it is twisted while rotating up to 2, the number of turns (the number of turns) of the twisted spiral coil is equal to that of sewn, and therefore a strong joining force can be maintained.

Fourth, since the suture needle C has a uniform thickness and the tip 30 has a pointed needle shape, the needle tip is easily pierced, and the wound cross section due to the insertion of the needle is sufficient. Small (for example, wire diameter 0.2-2.0mm)
Compared with the structure described in Japanese Patent No. 13, the tissue is extremely less damaged.

Fifth, since the suture needle C is made of an absorbent substance such as glycolic acid, it is hydrolyzed within a predetermined time and absorbed in the body. Absent. Therefore, when cutting the part of the suture needle C that has been screwed in and exposed from the epidermis 10, it is not necessary to remove the part that protrudes from the epidermis 10, and even if the suture needle C is cut with a protruding length left to some extent. There is no problem, the cutting work does not require skill, and the cutting work can be performed easily.

Seventh, since it has a spiral coil shape, it is suitable not only for general suturing but also for suturing work in a trocar with a narrow inner diameter (5-12 mm) during endoscopic surgery. it can. The present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the invention.

For example, the absorptive substance is not limited to the above-mentioned polyglycolic acid and polydioxanone, but may be needles selected from polylactolic acid, a mixed substance of polyglycolic acid and polylactolic acid, polycaprolactone / collagen, chitin or the like. Time (period) when is absorbed by the tissue
It may be appropriately selected according to For example, polyglycolic acid and polylactolic acid are absorbed into tissues in a few weeks, but polycaprolactone has a long absorption period of one year, so it is possible to maintain the in-vivo tensile strength for a long time. .

Further, in either the buried suture needle A or the buried suture needle B, a thin ring-shaped flange may be attached to the intermediate portion of the shaft portions 1, 1a, 21. With such a configuration, there is an advantage that the shaft portions 1 and 21 are likely to be uniformly pierced into the tissues on both sides of the incision.

Further, instead of the structure of the auxiliary tool 32 for suturing shown in FIG. 8, the pressing rod 37 is slidably penetrated to the lower side of the grip portion 35, and the lower end thereof has a diameter as it goes downward. Is attached to each elastic piece 33, and a sliding piece slidably contacting each of the elastic pieces 33 is attached to the inside of each elastic piece 33, and the outer diameter of the elastic holding portion 34 is sewn in a natural state. The needle C may be configured to be smaller than the inner diameter of the inner peripheral portion 31b.

With this structure, in order to attach the suturing auxiliary tool to the suturing needle C, the elastic holding portion is fitted into the inner peripheral portion of the suturing needle C while the pressing rod is pulled up.
Subsequently, the grip portion 35 is pinched and fixed, and then the pressing rod is pushed downward. Then, since the tapered portion of the conical body pushes the sliding piece outward, the elastic piece 33 integrated with the sliding piece also expands outward and presses the inner peripheral portion 31b of the suturing needle C. The suturing needle C and the elastic holding portion 34 are substantially integrally fixed. The procedure of the suturing operation is the same as that of the embodiment shown in FIG. 8 described above.

Further, as a modification of the first embodiment shown in FIGS. 1 and 2, it may be constructed as shown in FIGS. That is, in this modified example, in this modified example, the one-way pointed locking piece 4a is formed so that its width becomes gradually wider toward the tip thereof, and the thickness thereof is made thinner. ing.

With this configuration, when the buried suture needle D is inserted into the sutured part of the body from its end 2a, the tip side of the pointed locking piece 4a falls to the base 1a side. The cross section of the wound due to the insertion of the needle D is sufficiently small, and compared with the structure described in Japanese Utility Model Publication No. 60-25213.
When the force is exerted in the direction in which the needle D is removed from the tissue with less damage to the tissue, the one-way pointed locking piece 4a moves into the shaft portion 1.
It stands up from a and penetrates deeply into the tissue, making it difficult to pull out,
A strong joining force can be maintained.

[0056]

As is apparent from the above-mentioned detailed description, according to the invention described in claim 1, both ends of the shaft portion are sharply pointed, and the one direction forming the check locking portion is formed. Since the pointed locking piece is flexible and falls in the inserting direction and comes into contact with the outer periphery of the shaft, the wound cross section due to the inserting of the suture needle is disclosed in Japanese Utility Model Publication No. 60-25213. Sufficiently smaller than the structure described, less likely to damage the tissue, and when a force acts in the direction in which the suturing needle comes out of the tissue, the one-way pointed locking piece immediately stands up from the outer periphery of the shaft portion, Since it pierces the tissue, it does not have the drawback that it is easy to pull out unlike the closed structure described in the above publication, and a strong joining force can be maintained.

Secondly, according to the invention described in claim 1,
Since the shape of the embedded suture needle is curved in a bow shape when viewed from the front, for example, an incision is made in an area in which the surface layer portion of the cross section of the upper limb, lower limb, torso, neck, etc. is curved in an arc shape. In the case of surgical suturing, by matching the radius of curvature of the body surface layer and the radius of the curved portion of the suturing needle, the suturing needle is buried at a certain depth position in the body, so that the time taken to bond the wound It is easy to adjust the time of absorption of the suture needle into the tissue and stabilize the bonding of the wound, and the needle insertion work can be performed at a site where there is little space in the deep layer of the incised tissue. It has the advantage of being easy.

Further, according to the invention described in claim 2, since the needle for suturing is formed in a flat rectangular cross section having a thin width and a wide width at least in the middle portion of the shaft portion, the needle holder. With this, it is easy to grasp, and it is possible to reliably maintain the relationship once grasped, and there is the advantage that suturing surgery becomes easy.
Immediately after the suture needle is buried, it is thin and flexible in the thickness direction, so even if the tissue near the surface of the suture part deforms as the body moves, Since the suture needle is also deformed, there is an advantage that the damage to the subject is greatly reduced as compared with the closed structure having a large rigidity as described in the above publication.

Further, the invention according to claim 3 punctures the curved portion of the buried suture needle having the above-mentioned excellent effects in accordance with the curved shape of the tissue on both sides of the wound after the incision operation, Since both sides of each are joined together, the advanced suturing technique is not required, the operation time can be shortened, scars are hardly noticeable, and there is no need to remove the needle, which causes pain for the operator. It is possible to provide an embedded suture operation method using an embedded suture needle that is significantly relaxed and has more reliable joining than the conventional suture method.

Further, according to the invention described in claim 4, firstly, since the entire shape is a spiral coil shape and the tip is formed in a pointed needle shape, the structure is simple and the manufacture is easy. Therefore, it is possible to provide a suture needle that is easy and inexpensive, and secondly, a simple operation that applies a rotational force in one direction while pressing the tip of the needle formed in the shape of a pointed needle against the suture portion. Since suture can be sutured and a needle is not required, it is possible to perform embedded suture surgery very easily and quickly without the need for advanced suture technology. Thirdly, the scar on the suture needle is It is possible to provide a suture needle that can make scars less noticeable because it can be limited to exhibiting only one dot shape corresponding to the wire diameter.

Fourth, since it is a spiral needle, it is possible to provide a suture needle capable of firmly joining and holding the tissues on both sides of the incision, which is equivalent to the number of windings screwed into the suture portion. be able to. Fifthly, since the entire shape is a spiral coil shape and it is sufficient to rotate the whole body during suturing, so that when operating with an endoscope, the inside of the trocar with a small inner diameter (5 to 12 mm) is used. It is possible to provide a suture needle suitable for suturing work in the above.

Further, according to the fifth aspect of the present invention,
The suture portion can be reliably held in the closed state by selecting an absorbable substance suitable for the time at which the needle is absorbed into the tissue from among various absorbable substances.

[Brief description of drawings]

FIG. 1 is a front view showing the configuration of an embedded suture needle according to a first embodiment of the present invention.

FIG. 2 is a plan view of the embodiment.

FIG. 3 is an explanatory view showing a part of a body, for example, a tissue in a state in which an abdomen that bulges outward and has an arcuate shape is incised and is partially broken.

FIG. 4 is a front view showing the configuration of the embedded suture needle according to the second embodiment of the present invention.

5 is a plan view of the embodiment shown in FIG.

FIG. 6 is a perspective view showing the structure of an embedded suture needle according to a third embodiment of the present invention.

FIG. 7 is a perspective view showing a configuration of an embedded suture needle according to a modification of the third embodiment shown in FIG.

FIG. 8 is a perspective view for explaining a configuration and a method of using a suturing auxiliary tool for performing suturing operation with an embedded suture needle according to a third embodiment.

9 is a perspective view showing a state in which an incision part of a body is sutured by the suturing needle according to the third embodiment shown in FIG. 6. FIG.

FIG. 10 is a perspective view showing a partial configuration of a buried suture needle as a modification of the first embodiment shown in FIG.

FIG. 11 is a front view showing the configuration of part of the embedded suture needle according to the modified example shown in FIG.

12 is a plan view of the embodiment shown in FIG.

[Explanation of symbols]

 A, B, C, D Implantable suture needle 1,1a, 21 Shaft part 2,2a, 3,22,23 End part 4,4a, 5,24,25 One-way pointed locking piece 6,6a, 7, 26, 27 Non-return locking part 8 Needle holder 9 Wound 10 Epidermis 11 Dermis 12 Subcutaneous tissue 13 Fat layer 14 Muscle layer 28 Bending part 30 Tip 31a Outer part 31b Inner part 32 Suture aid 33 Elastic piece 34 Elastic holding portion 35 Gripping portion 36 Knurl 37 Press rod 38 Palm rest member 39 Incision portion 40 Incision line 41 Needle trace 42 Thumb 43 Index finger 44 Middle finger

Claims (6)

[Claims] 1. A plurality of one-way cusp-shaped locks in which at least a half portion of the shaft portion is curved, both ends of the shaft portion are pointed, and the outer circumferences of both ends of the shaft portion are flexible. A buried suture needle characterized in that a non-return locking portion made of a piece is provided, and the whole is made of an absorbent material. 2. At least an intermediate portion of the shaft portion is formed in a flat shape having a thin wall in a direction normal to the curved surface and a wall thick in a width direction orthogonal to the normal. Item 5. The embedded suture needle according to Item 1. 3. A plurality of one-way cusp-shaped locks in which at least half of the shaft portion is curved, both ends of the shaft portion are pointed, and the outer circumferences of both ends of the shaft portion are flexible. A non-return locking part consisting of one piece is provided, and the middle part of the embedded suture needle made of an absorbable material is grasped by a needle device with a needle device, and the curved part of the needle is formed on both side tissues of the wound after incision surgery. The method of implanting suture according to claim 1, wherein the surgical instrument is punctured according to the curved shape of the tissue, and after that, the needle holder is removed and both sides of the wound are brought close to each other and joined. 4. The entire shape is a spiral coil shape, the tip is formed into a pointed needle shape, and the length in the center direction is at least the length necessary for suturing the incised body part, and the whole is absorbable. An embedded suture needle characterized by being made of a substance. 5. One kind of absorbent material selected from the group consisting of polyglycolic acid, polylactolic acid, a mixed material of polyglycolic acid and polylactolic acid, polycaprolactone, polydioxanone, collagen or chitin. It is a substance, The needle for embedded sutures of Claim 1 or 4 characterized by the above-mentioned. 6. The entire shape is a spiral coil shape, one end is formed into a pointed needle shape, and the length in the center direction is at least the length necessary for suturing the incised body part, and the whole is absorbable. A suture auxiliary tool for holding an embedded suture needle made of a substance and screwing the embedded suture needle into a suture portion of a body during suturing operation, the inner peripheral portion of the embedded suture needle at one end side. And an elastic holding portion capable of holding the buried suture needle by an expanding elastic force in a natural state, and a rigid grip portion continuous with the elastic holding portion on the other end side, By inserting the elastic holding portion into the embedded suture needle in a state of being bent inward with an external force so as to reduce the diameter and releasing the external force, the elastic suture retains the embedded suture needle. By holding it and rotating the grip by hand, the embedded suture can be An implantable suture assisting tool, characterized in that a needle can be screwed into a body suture portion.