JPH0847526A - Suture prosthetic material - Google Patents

Abstract

PURPOSE:To facilitate insertion and alignment of a suture prosthetic material adequate for use in an automatic suture device in surgical operation and to solve problems of mispositioning, etc., after mounting by forming a cloth body to a cylindrical shape, thereby forming the prosthetic material described above. CONSTITUTION:This suture prosthetic material is formed by superposing non- woven fabrics 3 consisting of an in-vivo decomposable absorbent blank and a power net fabric 4 on each other and forming these fabrics to a cylindrical shape by subjecting both edge parts to chain stitching 5, 6. Both ends 7 of the sewing yarn are extended. The in-vivo decomposable absorbent blank includes a polyglycolic acid, polylactic acid, a copolymer of the glycolic acid and lactic acid, paradioxanone, polycarprolactone, chitin, etc. The prosthetic material is mounted to the frame part 10 and cartridge part 9, respectively, of the suture device at the time of use. Both are then integrally fixed by staples in the state of holding the body tissues of the lesion between non-woven fabrics 3, 3 and the lesion 13 is ported. The power net fabric 4 is removed outside the body together with the lesion 13 by pulling the yarn ends 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suture prosthesis material suitable for use in an automatic suturing device in a surgical operation or the like.

[0002]

2. Description of the Related Art Conventionally, stapler type automatic suturing devices in which a large number of staples are embedded are often used for surgical operations such as excision and anastomosis of tubular organs. In some cases, problems such as air leakage from the part and damage to the tissue or rupture may occur when applied to soft tissue.

The present invention is a novel suture prosthesis for an automatic suturing device, which has never been provided and which is easy to mount and position, prevents displacement after mounting, and facilitates cutting operation by a cutter. The material is provided.

[0004]

SUMMARY OF THE INVENTION The present invention provides a suture prosthesis having a tubular cloth-like body.

The present invention also provides a suture prosthesis in which the opening at one tip is narrower than the opening at the other tip.

Further, the present invention is a tubular suture prosthesis material (hereinafter referred to as the first invention) in which a cloth-like body made of a biodegradable and absorbable material and a stretchable knit fabric are integrated at both ends thereof. )I will provide a.

Further, the present invention provides a tubular suture prosthesis material (hereinafter referred to as a second invention) made of a cloth-like body made of a biodegradable and absorbable material.

The present invention is a tubular suture prosthesis material. In the first invention, since a stretchable material is used as a part of the constituent material, the stretchable material prevents the suture prosthesis from being attached to an automatic suturing device. Further, since the adhesion after mounting is increased, there is no displacement and the cutting of the prosthesis material, which is performed at the same time as the cutting of the affected area, is in tension, so that it can be performed easily and reliably.

Further, in the second invention, since the whole is a cloth-like body made of a biodegradable and absorbable material, it is not necessary to remove the non-decomposable substance after surgery, and since the removal of the substance is forgotten, Accidents such as foreign bodies remaining in the body can also be prevented.

The term "cylindrical" means that both ends of the cloth-like body or both ends of the cloth-like body and the stretchable knit fabric are integrated with each other, and the shape is cylindrical, prismatic or planar. It may be in the form of.

On the other hand, the biodegradable and absorbable material of the present invention used for part or all of the suture prosthesis material is characterized in that it does not remain as a foreign substance in the body for a long period of time.

The stretchable knitted or woven fabric of the first aspect of the present invention is appropriately knitted or woven together with rubber threads, polyurethane-based elastic threads, crimps, bulky processed threads, etc. in its structure. Although it has elasticity in the direction, its structure is not particularly limited, but from the viewpoints of ease of sewing such as cutting and integration, and stability of form, polyurethane yarn is covered with nylon yarn, for example. A particularly preferable example is a power net fabric knitted into a warp knit with a thread obtained by ringing.

On the other hand, as the cloth-like body made of a biodegradable and absorbable material, polyglycolic acid, polylactic acid, a copolymer of both, or a mixture thereof, and further paradioxanone, polycaprolactone, chitin, etc. have already been used as medical materials. Examples of such materials are knitted fabrics, woven fabrics, non-woven fabrics, films, and the like, but in particular, flexibility, breathability, appropriate waist, thickness, blood absorption, ease of passing staples, degradability, etc. From the Japanese Patent Publication No. 5-18579, which was previously invented by the applicant,
Examples of suitable materials include a knitted and woven knitted fabric made of polyglycolic acid disclosed in JP-A-79586, and a non-woven fabric manufactured by needle punching a woven fabric. In addition, such a nonwoven fabric has a property of poor stretchability.

According to the first aspect of the present invention, when the knitted fabric having a stretchability and the cloth and the cloth-like body are integrated, they are both cut to a required size (preferably the same size for integration work). Put the cloths on top of each other, and both ends (both ears)
Are integrated by, for example, sewing, bonding or the like. As a particularly preferable means of integration, a coarse pitch comb stitch that allows easy separation of both can be exemplified, and the thread end thereof is extended to an appropriate length in order to facilitate the above separating operation. It is desirable to put it out. Examples of the sewing thread include sewing thread for sewing clothing, suture thread for medical use, nylon,
It is composed of a non-biodegradable and absorbable material such as polyester, vinylon, cotton and silk, and any of the above-mentioned biodegradable and absorbable materials. As a suture, it is preferable that the suture is made of the same material as the biodegradable and absorbable material of the present invention in consideration of the case where the thread is caught and remains in the body. Further, it is important for achieving the above-mentioned object that the inner diameter of the tube formed by the above integration is equal to or smaller than the outer diameter of the suture instrument to be applied, and therefore, the size, shape, and shape of the cloth-like body to be used, It is desired that the sewing means for integration and the like meet such purposes.

In the second aspect of the present invention, the tubular body made of the biodegradable and absorbable material is appropriately tubular according to the desired size, that is, the size of the staple implantation site of the automatic suturing device to be applied. The cloth-like body cut into a size is joined by an arbitrary method such as stitching or adhering. For example, rough provisional stitching or use of provisional attachment is advantageous in workability after the suturing operation described later. Therefore, it is particularly preferable. However, a knitted fabric knitted in a high density in a tubular shape may be used as a suture prosthesis material so as to be suitable for the use.

The automatic suturing device to which the prosthetic material of the present invention is applied is AUTOSUTURE MUL manufactured by UNITED STATE SURGICAL
TIFIRE GIA 80, 60 TYPE (trade name), ETHICON endo SUR
GERY PROXIMATE LINEAR CUTTER 75, 55 TYPE (trade name) can be used as an example. When applying to these, simply attach the cartridge with built-in staple and the frame with staple receiving groove by mounting. It can be performed.

The cloth-like material includes non-biodegradable and absorbable materials such as nylon, polyester, vinylon, cotton and silk, and polyglycolic acid, polylactic acid, a copolymer or mixture of polylactic acid and polyglycolic acid, paradioxanone, It is composed of at least one selected from the group consisting of biodegradable and absorbable materials such as polycaprolactone and chitin. The cloth-like body may be a woven fabric, a knitted fabric, a non-woven fabric, or a film.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings.

Example 1 FIG. 1 shows a suture prosthesis material of the present invention. The prosthesis material is made by integrating a non-woven fabric (3) made of a biodegradable and absorbable material and a power net fabric (4) by combing (5) and (6) at both ears of the sewing thread. Both ends (7) and (7) are extended.

As the non-woven fabric (3), 12 filaments, 33 denier polyglycolic acid yarns were knitted by an 18-gauge circular knitting machine with a basis weight of 45 g / m ² , and four needle-punched in the wale direction were prepared. Then, they were alternately laminated so that the course direction and the wale direction were orthogonal to each other, and the whole was needle punched to be integrally manufactured. The power net fabric (4) is made of 280 denier polyurethane yarn and 70 denier, 24 filament nylon yarn, and is made into a power net structure using a 48 gauge warp knitting machine so that the mixing ratio is 15:85. It is organized. The sewing thread can be exemplified by a 4-0 size polyglycolic acid suture thread.

[0021] Such non-woven fabric (3), power net fabric (4)
Are cut and overlapped to a size of 80 × 25 mm, and the inner side of the side edge is sewn by 2 mm from the side edge by hand stitching (5) and (6) with a sewing pitch of 10 mm, and the tubular suture prosthesis material of the present invention ( Make up 1). The thread end (7) is 8c
It was extended by about m. In addition, a suture prosthesis material (2) was obtained with the same specifications as above except that a cloth having a size of 80 × 20 mm was used.

In FIG. 2, the suture prosthesis material (1), (2) of the present invention constructed as described above is of a double staple type (two rows × two rows of staples embedded) type which has been generally used conventionally. Frame part with staple receiving groove of automatic suturing device (8)
(10) and the state of use attached to the staple built-in cartridge section (9) are shown. In addition, (11) in FIG.
Shows a staple tightening handle and (12) shows a cutter. Further, FIG. 3 shows a sectional view taken along the line AA in FIG. 2, but the power net cloth (4) is stretched and mounted.

As shown in FIGS. 3 and 4, the suture prosthesis material of the present invention mounted as described above has an affected part interposed between the frame part (10) and the staple-containing cartridge part (9) at the time of operation. The body tissue of (3) and (3) of the suture prosthesis material attached to the frame part (10) and the cartridge part (9) is clamped by tightening the handle (11), and the staple (15) is used. Both are fixed together. Then, by operating a cutter (12), it is divided into a lesion (13) and a normal tissue portion (14) that is not so, and a portion left to the body tissue by pulling the thread end (7) of the sewn suture The lesioned part (13), which is separated into (14) and the other part and is cut, is a power net fabric (4) which is a stretchable fabric.
And remove it outside the body.

FIG. 7 shows another suture prosthesis material of the present invention.
The prosthetic material is a non-woven fabric made of a biodegradable and absorbable material.
(3), (3 ') From one end to the central part, both ears are sewn together (5), (6) and integrated, and the other end is sewn and narrowed to narrow the end opening. . Further, both ends (7) and (7) of the sewing thread are extended. When this suture prosthesis material is used with the frame portion (10) and the cartridge portion (9) of the double staple type automatic suturing device (8) shown in FIG. When inserting (10) and the cartridge part (9) into the body, there is no flipping or displacement. In addition, when the suture prosthesis material is attached, it is easy to attach it, and it does not become misaligned or the end portion is turned up.

As shown in FIG. 8, by providing the knot (20), it is possible to prevent the non-woven fabric (3) and the power net fabric (4) from being separated from each other by loosening the seam at the time of mounting. In addition, even when cutting with a cutter from the direction of the arrow, the seams do not loosen and loosen, and can be easily cut.

As shown in FIG. 9, by providing a cut (21) or a perforation (22) at the center of the non-woven fabric (3), a cutter is made to act along the cut and the perforation from the direction of the arrow. Can be easily cut. As another means for facilitating the cutting, it is also possible to form a weak portion such as provisional stitching or adhesion, or to make it like paper by resin processing or hot pressing to make it easy to cut.

As shown in FIG. 10, the suture prosthesis material of the present invention.
When bringing the automatic suturing device (8) equipped with (1) and (2) to the cutting site, put the protective cap (23) on the frame part (10) and the cartridge part (9) together. It is possible to prevent the suture prostheses (1) and (2) from being turned over and slipping after they are attached.

The protective cap (23) is made of a bag-like tubular body made of knitted / woven fabric, non-woven fabric, plastic film or the like.

The shape is preferably matched with the tip shape of the automatic suturing device.

Similar results can be obtained by using a sewing thread made of polyester instead of the sewing thread.

Embodiment 2 FIG. 5 shows a suture prosthesis material of the second invention. This suture prosthesis
(2 ') is a non-woven fabric made of the same polyglycolic acid as above
It is composed of (3 '), and both ends are integrated with the sewing thread (4') by comb stitching. Further, as shown in FIG. 6, only the staple action peripheral portion (17) may be a non-woven fabric made of polyglycolic acid, and another inexpensive material (18) may be temporarily adhered to the non-woven fabric with an adhesive (19).

The suture prosthesis material of the second invention can be used in the same manner as the suture prosthesis material of the first invention shown in the first embodiment.

The present invention has the characteristic of preventing air leakage from the resection site, tearing of soft tissue, etc., especially in the operation using a staple type automatic suturing device, and in combination with an elastic material, that is, its combination. Elongation makes it easy to attach and fix to various sizes of automatic suturing devices. Also, once attached, it will not be displaced due to the tightening force, and cutting operation after fixing to staples. Even in the case, it has a feature that it can be easily cut because it is under tension. In addition, it is economical because it requires less expensive biodegradable and absorbable material. When a sewing thread having elasticity is applied, it can be combined with a low elasticity cloth.

[Brief description of drawings]

FIG. 1 is a perspective view showing a suture prosthesis material of the present invention.

FIG. 2 is a front view showing a state in which the suture prosthesis material of FIG. 1 is attached to an automatic suturing device.

FIG. 3 is a sectional view taken along line AA in FIG. 2;

FIG. 4 is a perspective view showing a state in which the suture prosthesis material of FIG. 1 is applied to body tissue and operated.

FIG. 5 shows a suture prosthesis entirely made of bioabsorbable material.

FIG. 6 shows a suture prosthesis in which only the stapling edge is made of bioabsorbable material.

FIG. 7 shows another structural example of the present invention, showing a suture prosthesis in which one end is sewn and narrowed.

FIG. 8 is a perspective view showing another example of the suture prosthesis material of the present invention.

FIG. 9 is a perspective view showing another example of the suture prosthesis material of the present invention.

FIG. 10 is a perspective view showing an example of using a protective cap when using the suture prosthesis material of the present invention.

[Explanation of symbols]

 1 Suture prosthesis material 2 Suture prosthesis material 3 Nonwoven fabric 3'Nonwoven fabric 4 Power net material 5 Guiding stitch 6 Guiding stitch 7 End of thread 8 Automatic suturing device 9 Cartridge portion 10 Frame portion 11 Staple tightening handle 12 Cutter 13 Lesion portion 14 Normal tissue Part 15 Staple 17 Staple action peripheral edge 18 Material 19 Adhesive 20 Knot 21 Notch 22 Perforation 23 Protective cap

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[Procedure amendment]

[Submission date] July 3, 1995

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] 0023

[Correction method] Change

[Correction content]

As shown in FIGS. 3 and 4, the suture prosthesis material of the present invention mounted as described above is interposed between the frame portion (10) and the staple built-in cartridge portion (9) at the time of operation, as shown in FIGS. Nonwoven fabrics (3), (3) of suture prosthesis, which are attached to the frame part (10) and the cartridge part (9) by tightening the handle (11) with the body tissue of
So that it is sandwiched between the parts, and then the cutter (12) is operated.
By making them staple (15), both are integrated.
With the secured state, divided into normal tissue portions otherwise lesion (13) (14), by pulling the yarn end of the suture that Gushinuii (7), the portion to be left in the body tissue (14) The lesioned part (13) which is separated and cut into other parts is removed outside the body together with the power net material (4) which is a stretchable material.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Name of item to be corrected] 0027

[Correction method] Change

[Correction content]

As shown in FIG. 10, the side to be inserted into the body,
That is, in the present embodiment, the suture prosthesis of the present invention is attached to the frame portion (10).
After mounting the material (2), cover the protective cap (23)
Rib bark of suture prosthesis (2) when inserted into the body
Therefore, the shift can be prevented. In addition, automatic suturing device
Depending on the model, the cartridge part (9) has a protective cap
You may cover.

[Procedure 3]

[Document name to be corrected] Drawing

[Name of item to be corrected] Fig. 10

[Correction method] Change

[Correction content]

[Figure 10]

Claims (10)

[Claims] 1. A suture prosthesis material obtained by forming a cloth-like body into a tubular shape. 2. A suture prosthesis material having an opening at one tip narrower than an opening at the other tip. 3. The tubular suture prosthesis material according to claim 1, wherein a cloth-like body made of a biodegradable and absorbable material and a stretchable knit fabric are joined at both ends. 4. A suture prosthesis material according to claim 3, wherein a sewing thread is arranged in a comb-like shape at a joint portion between a cloth-like body and an elastic knitted fabric, and the thread end of the sewing thread is extended. . 5. The biodegradable and absorbable material is at least one selected from the group consisting of polyglycolic acid, polylactic acid, a copolymer of glycolic acid and lactic acid, paradioxanone, polycaprolactone and chitin. The suture prosthetic material according to item 3. 6. The suture prosthesis material according to claim 3, wherein the stretchable knitted fabric is a power net fabric. 7. The suture prosthesis material according to claim 3, wherein the cloth-like body is a non-woven fabric made of polyglycolic acid. 8. A tubular suture prosthesis material comprising a cloth-like body made of a biodegradable and absorbable material. 9. A tubular suture prosthesis material obtained by joining a cloth-like body made of a biodegradable and absorbable material to a cloth-like body made of a non-biodegradable and absorbable material. 10. The tubular suture prosthesis material according to claim 9, wherein the cloth-like body made of a biodegradable and absorbable material is joined to a non-woven fabric made of a non-biodegradable and absorbable material.