JP4157997B2 - Suture prosthesis - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a suture prosthesis suitable for use in an automatic suturing device in a surgical operation or the like, in particular, an automatic suturing device used when performing surgery under a thoracoscope.
[0002]
[Prior art]
The stapler type automatic suturing device in which a large number of staples are embedded has been widely used for surgical operations such as excision of tubular organs, anastomosis, etc., but when applied to the lung, etc., air leaks from the sutured part. In the case of application to soft tissues, problems such as tissue damage and tearing may occur.
[0003]
As a suture prosthesis material to be attached to an automatic suturing device, Japanese Patent Application Laid-Open No. 10-216216 and Japanese Patent Application Laid-Open No. 10-216217 describe a biodegradable absorbent film and a stretchable non-absorbable material on both sides. It has been proposed to form a cylindrical suture prosthesis material by roughly sewing with a book thread.
[0004]
However, in such a configuration, when the suture prosthesis material is attached to the staple forming side and the receiving side of the automatic suturing device, it is necessary to pull out the four threads after stapling and cutting, which is complicated and the sewing thread becomes entangled. There was also.
[0005]
The present invention provides a new suture prosthesis material for an automatic suturing device that is easy to mount and align, prevents misalignment after mounting, facilitates a cutting operation with a cutter, and can easily pull out a thread. The purpose is to provide.
[0006]
[Means for Solving the Problems]
The present invention provides the following suture prosthesis.
1. A first cloth-like body made of biodegradable absorbent material and a second cloth-like body made of an arbitrary material, which are superposed on each other, are sewn together at two temporary sewing portions with a single continuous sewing thread. A tubular suture prosthesis ,
An opening for insertion into the automatic suturing device is configured on at least one side of the front side and the back side of the prosthetic material,
On the side where the insertion opening is configured, wherein the drawn out intermediate portion of the temporary thread is formed a loop-shaped pulling the recessed portions, suture prosthesis to be attached to an automatic suturing device.
2. The suture prosthesis according to claim 1, wherein the pull-out portion has a length equivalent to or longer than an arm portion of an automatic suturing device to which the suture prosthesis is attached .
3. 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, chitin, and a copolymer of lactic acid and caprolactone. The suture prosthetic material according to claim 1 .
4). It said first cloth-like member is a nonwoven fabric, knitted fabric, stitching prosthesis according to claim 1 is a fabric or a melt blown molding.
5. The suture prosthetic material according to claim 4 , wherein the second cloth-like body is a knitted or woven fabric having elasticity.
6). The suture prosthetic material according to claim 5 , wherein the knitted or woven fabric having elasticity is a power net fabric.
7). Suture prosthesis according to any one of claims 1 to 6 temporary suture is a monofilament suture.
8). The suture prosthesis according to any one of claims 1 to 7, which is attached to an automatic suturing device used when performing surgery under a thoracoscope.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
As shown in FIG. 1, a suture prosthesis 1 according to the present invention includes a first cloth 3 made of a biodegradable and absorptive material and a second cloth 4 made of an arbitrary material. Two temporary sewing portions 5 are formed into a cylindrical shape, and a pull-out portion 6 made of a loop-shaped temporary sewing thread is formed from one end of the suture prosthesis (backward when attached to the automatic suturing device). The pull-out portion 6 is preferably capable of performing a pulling operation of the temporary sewing thread after the operation, and the length of the pull-out portion is preferably the same as or longer than the arm portion 11 of the automatic suturing device. .
[0008]
The temporary sewing portion 5 may be formed linearly along the side surfaces of the first cloth-like body and the second cloth-like body, and as shown in FIG. Both ends of the temporary sewing thread 7 may be close positions. Such a suture prosthesis material whose front side is substantially closed can be mounted on the staple receiving side of the automatic suturing device so as to cover the tip as shown in FIG.
[0009]
Biodegradable and absorbable materials include polyglycolic acid, polylactic acid, polycaprolactone, glycolic acid / lactic acid copolymer, lactic acid / caprolactone copolymer, paradioxanone, chitin and other knitted fabrics, woven fabrics, nonwoven fabrics, films, etc. In particular, Japanese Patent Publication No. 5-18579 previously invented by the present applicant in terms of flexibility, breathability, appropriate waist, thickness, blood absorbability, ease of passing staples, degradability, and the like. Examples of suitable materials include knitted and woven knitted from polyglycolic acid disclosed in JP-A-5-79586, and non-woven fabric produced by needle punching a woven fabric. The nonwoven fabric may be manufactured by a melt blow method, and is preferably one in which fibers are aligned in one direction. Further, it is preferable that one surface or both surfaces of the first cloth-like body is thermocompression-bonded or pressure-pressed to make the surface smooth.
[0010]
The material of the second cloth-like body is arbitrary, and may be a material such as a polyolefin such as polyethylene or polypropylene, a polyamide such as polyester or nylon, a polyurethane, polystyrene, cotton, hemp or silk. A decomposition-absorbing material may be used. The second cloth-like body is preferably a knitted or woven fabric having elasticity. Stretched knitted fabrics and fabrics are made by appropriately knitting and weaving rubber threads, polyurethane elastic yarns, crimps, bulky processed yarns, etc. in the structure, and stretchable in the vertical and horizontal directions. However, the structure is not particularly limited. From the standpoint of ease of cutting and integration, and the stability of the form, for example, a thread obtained by covering a nylon thread with a polyurethane thread. A power net fabric knitted into warp knitting can be exemplified as a particularly suitable example.
[0011]
Each of the first and second cloth-like bodies is cut to a required size (preferably the same size for work), and then both the cloths are overlapped, and both ends (both ear parts) are integrated by temporary sewing. . Examples of the temporary stitching include a rough-pitch comb stitch that can be easily separated after surgery. Temporary stitching is performed with a single thread, and both ends of the thread extend to an appropriate length from the front side of the suture prosthetic material (the tip side when attached to the automatic suture device), and the rear side of the suture prosthetic material (automatic suture). A pull-out portion connected to the hand side when mounted on the container is formed .
[0012]
The drawing portion may have any shape as long as it can easily pull out the temporary sewing thread, and examples thereof include the shapes shown in FIGS. The pull-out part is for pulling out the thread by one operation by pulling the pull-out part after stapling with an automatic suturing device. The length of the pull-out part is such that the tip of the pull-out part is near the hand of the automatic suturing device. It is preferable to do so. The length of the preferable withdrawal portion is about 2 to 20 times the length of the suture prosthesis, more preferably about 3 to 15 times, and still more preferably about 3 to 10 times.
[0013]
Examples of the temporary sewing thread include sewing threads for sewing clothing, medical suture threads, and the like, and non-biodegradable absorbent materials such as nylon, polyester, vinylon, polyvinylidene fluoride, cotton, silk, and the above-described biodegradable absorption. Consists of one of sex materials. In consideration of the case where the sewing thread is caught and remains in the body, it is preferable that the sewing thread is composed of the same material as the biodegradable absorbent material of the present invention. Furthermore, it is important to achieve the above-mentioned purpose that the inner diameter of the cylinder formed by the integration is equal to or smaller than the outer diameter of the suture device to be applied. Therefore, the size, shape, It is desirable that the sewing means for integration meet this purpose.
[0014]
The temporary sewing thread is preferably a monofilament sewing thread in order to facilitate drawing.
[0015]
The automatic suturing device to which the prosthetic material of the present invention is applied includes UNITED STATE SURGICAL AUTOSUTURE MULTIFIRE GIA 80, 60 TYPE (trade name), ETHICON endo SURGERY PROXIMATE LINEAR CUTTER 75, 55 TYPE (trade name) In application to these, the attachment can be performed by a simple operation of simply fitting the cartridge unit with the staple-containing cartridge portion and the frame portion having the staple receiving groove. The automatic suturing device is preferably an automatic suturing device used particularly when performing a surgery under a thoracoscope.
[0016]
【Example】
Hereinafter, the present invention will be described based on the drawings.
Example 1
FIG. 1 shows a suture prosthesis (1) of the present invention. The prosthetic material comprises a nonwoven fabric (3) made of biodegradable and absorbable material, and a power net fabric (4) that forms a temporary stitching portion (5), (5) at both ears, and is integrated, Both ends of the temporary sewing threads (7) and (7) are extended, and a loop-shaped extraction part (6) is formed.
[0017]
Nonwoven fabric (3) was prepared by knitting 12 filaments, 33 denier polyglycolic acid yarn with a basis weight of 45 g / m ² with an 18 gauge circular knitting machine, and lightly needle punching in the wale direction. Are alternately stacked so that the course direction and the wale direction are orthogonal to each other, and the whole is further integrated by needle punching. The power net fabric (4) is made of 280 denier polyurethane yarn, 70 denier, 24 filament nylon yarn, and a 48 gauge warp knitting machine is used for the power net structure so that the mixing ratio is 15:85. It is organized. As the sewing thread, a 4-0 size polyglycolic acid suture thread can be exemplified as a specific example.
[0018]
The non-woven fabric (3) and the power net fabric (4) are each cut into a size of 80 × 25 mm, overlapped, and temporarily sewed at a sewing pitch of 10 mm by a hand-sewn temporary stitching portion (5) and (5) 2 mm inside from the side edge. Then, the suture prosthesis (1) of the present invention provided with the loop-shaped extraction portion (6) is configured.
[0019]
Both ends of the temporary sewing thread (7) were extended by about 4 cm, and the pull-out part (6) was about 20 cm long.
[0020]
The suture prosthetic material (1) in FIG. 2 cuts off both corners of the nonwoven fabric (3) and the power net fabric (4) made of a biodegradable and absorbable material, and sews along the cut portion (5). (5) and the opening is narrowed by extending both ends of the temporary sewing thread from the proximity position on the front side of the suture prosthetic material, and a connected loop-shaped pull-out portion (6) is formed on one side. . When this suture prosthesis material is used in the frame portion (10) and 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 turning or misalignment. In addition, it is easy to attach the suture prosthesis material, and it is not displaced and the end portion is not turned up.
[0021]
In FIG. 3, the suture prosthetic materials (1) and (2) of the present invention configured as described above have staple receiving grooves of a thoracoscopic automatic suture instrument (8) under a thoracoscope. The state of use attached to the frame part (10) and the cartridge part (9) with built-in staples is shown. If there is a possibility that the operation may be hindered during the operation, the extraction part (6) may be grasped by hand. [Brief description of the drawings]
FIG. 1 is a perspective view showing a suture prosthesis material of the present invention.
FIG. 2 is a perspective view showing a suture prosthesis material of the present invention.
FIG. 3 is a view showing a state in which the suture prosthetic material of FIGS. 1 and 2 is attached to an automatic suturing device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Suture prosthesis material 2 Suture prosthesis material 3 1st cloth-like body 4 2nd cloth-like body 5 Temporary sewing part 6 Pull-out part 7 Temporary sewing thread 8 Automatic suturing device 9 Cartridge part 10 Frame part 11 Arm part

Claims (8)

A first cloth-like body made of biodegradable absorbent material and a second cloth-like body made of an arbitrary material, which are superposed on each other, are sewn together at two temporary sewing portions with a single continuous sewing thread. A tubular suture prosthesis ,
An opening for insertion into the automatic suturing device is configured on at least one side of the front side and the back side of the prosthetic material,
On the side where the insertion opening is configured, wherein the drawn out intermediate portion of the temporary thread is formed a loop-shaped pulling the recessed portions, suture prosthesis to be attached to an automatic suturing device. The suture prosthesis according to claim 1, wherein the pull-out portion has a length equivalent to or longer than an arm portion of an automatic suturing device to which the suture prosthesis is attached . 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, chitin, and a copolymer of lactic acid and caprolactone. The suture prosthetic material according to claim 1 . It said first cloth-like member is a nonwoven fabric, knitted fabric, stitching prosthesis according to claim 1 is a fabric or a melt blown molding. The suture prosthetic material according to claim 4 , wherein the second cloth-like body is a knitted or woven fabric having elasticity. The suture prosthetic material according to claim 5 , wherein the knitted or woven fabric having elasticity is a power net fabric. Suture prosthesis according to any one of claims 1 to 6 temporary suture is a monofilament suture. The suture prosthesis according to any one of claims 1 to 7, which is attached to an automatic suturing device used when performing surgery under a thoracoscope.

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