JP4351660B2 - Medical suture material - Google Patents

Description

  The present invention relates to a medical suture material that is sewn to a resection site or the like of a living tissue, and more particularly to a medical suture material that is used by being attached to an automatic suturing device.

  Conventionally, excision of lesions in living tissues has been generally performed by surgical operation. However, for the purpose of reducing the burden on the patient, endoscopic surgery, etc. is performed. It is becoming.

  For example, resection using an automatic suturing device is an example. The automatic suturing device is introduced into a living body through a perforation and excises the affected part, and simultaneously sutures the excision site. Using this, there is an advantage that incision of the affected part is not required. Therefore, the above-described automatic suturing device has a suturing mechanism section that sandwiches the excision site of the living tissue at the tip, and further includes a plurality of staple lines for suturing and a cutting mechanism for living tissue (for example, a knife) ) Is provided.

  Of course, also in a surgical operation, the use of an automatic suturing device is advantageous for suturing, shortening the incision time, and simplifying the treatment.

  By the way, when performing the above-mentioned automatic suturing device on fragile tissues such as the lungs, bronchi, liver and digestive tract, there is a risk of tissue tearing only by suturing with staples, and for example, in lung surgery There is a risk of air leakage. The air leak is fatal to the patient, and it is desirable to prevent it reliably.

  Therefore, conventionally, a suture material is attached to an automatic suturing device, and this is sewn to the excision site of the living tissue with staples.

  In this case, in order to make it possible to attach the suture material to the automatic suturing device and to surely reach the affected area, it is necessary to make some contrivance. It has been proposed to sew along the side edges to form a cylinder.

  By the way, in the case of a suture material that can be attached to an automatic suturing device by sewing an elastic knit, when the automatic suturing device is inserted into a living body and introduced into an affected area, the suture material contracts in the insertion direction and the base of the automatic suturing device. There are inconveniences such as shifting to the end side and rotating around the automatic suturing device (so-called twist).

  When the suture material is displaced or rotated, it is difficult to perform an accurate treatment, which is a serious problem particularly when performing a treatment with a limited visual field such as under an endoscope.

  Therefore, the present invention has been proposed in view of such circumstances, and there is no inconvenience due to deviation or rotation when the automatic suturing device is inserted. For example, when used in lung surgery, the air An object of the present invention is to provide a medical suture material capable of reliably preventing leakage.

In order to achieve the above-described object, in the medical suture material according to the present invention, the portions extending from both side edges to the distal end side of the two medical suture materials superimposed on each other are sewn together with a sewing thread, and the distal end side is closed. The front end portion sewn in the bag shape is formed so as to become gradually narrower toward the front end and can be attached to an automatic suturing device having a staple line. It is.

  In the suturing material according to the present invention, as a main suturing material, a non-woven fabric such as felt, a woven fabric, a knit, or the like having any degree of flexibility and stretchability is used. Any known material can be used, but considering the postoperative period, a bioabsorbable polymer such as polyglycolic acid or a part of a living tissue, for example, an organ protective film such as the pericardium It is desirable to use

  The plurality of suture materials constituting the medical suture material according to the present invention may be the same material or different materials. Further, the other material sewn together with the suture material may not be the suture material, and for example, a normal knit or the like is used.

  Since the medical suture material according to the present invention is sewn into a bag shape with the closed end, it can prevent the occurrence of deviation due to contraction in the insertion direction upon insertion into the automatic suturing device. . In particular, a suture material in which a plurality of suture materials are stitched together in a bag shape is constituted only by the suture material over the entire circumference, so that even if the suture material is rotated carelessly (twist), the suture material is always brought into contact with the affected area. The

  Therefore, by using the suture material according to the present invention, it is possible to reliably reinforce the suture site, and to suppress tissue tearing and air leakage.

  Embodiments to which the present invention is applied will be described in detail below with reference to the drawings.

  First, prior to the description of the embodiment of the medical suturing material according to the present invention, the medical suturing material prior to the present invention used by being mounted on an automatic suturing device in the same manner as the medical suturing material according to the present invention. An example will be described.

  The medical suturing material 1 preceding the present invention has been proposed by the inventors of the present application, and as shown in FIG. 1, for example, an absorbent polyglycolic acid felt (for example, trade name Neobale, manufactured by Gunze Co., Ltd.). Etc.), and a single main suture material 2 is stitched into a bag shape with its tip closed, and has a very simple configuration.

  Here, as the main suture material 2, in addition to a bioabsorbable polymer such as absorbable polyglycolic acid, any conventionally used suture material can be used. For example, a part of a living tissue such as an organ protective film such as a pericardium can be used.

  This main suture material 2 has a length substantially equal to the length of a mounting portion of an automatic suturing device to be described later, and is folded in two and is sewn together with a sewing thread 3 along one side edge in the width direction. The sewing thread 3 used here is preferably a so-called monofilament in consideration of ease of extraction, and the material thereof is arbitrary. For example, bioabsorbable polymer yarns and polyamide yarns having excellent slipperiness (so-called nylon yarns) are suitable.

  The medical suturing material thus configured is used by being mounted on an automatic suturing device. Then, next, the structure of an automatic suturing device and the usage method of a medical suture material are demonstrated.

  As shown in FIG. 2, the automatic suturing device has a suture part 12 that can be freely opened and closed at the distal end of the shaft 11, and an operation part 13 for holding and operating is provided at the proximal end part. It has been.

  As shown in FIG. 3, the suturing portion 12 includes a suturing mechanism portion 12a loaded with a cartridge in which staples are stored and a knife blade, and a jaw portion 12b for sandwiching a living tissue, and the sandwiching surface of the suturing mechanism portion 12a. A plurality of (in this example, 3 rows × 3 rows = 6 rows) staple lines 14 and knife scanning lines 15 are facing.

  This automatic suturing device is introduced into a living body through an attachment called a surge port. That is, first, a surge port is attached to the perforation provided in the living body, and the shaft 11 of the automatic suturing device is inserted into the living body through the surge port. Thereby, the perforation provided in the living body is kept sealed.

  The above-described medical suturing material 1 is used by being attached to a suturing portion 12 of an automatic suturing device. FIG. 4 shows a state in which the suturing material 1 is attached to the suturing portion 12 of the automatic suturing device, and the suturing material 1 is attached to the suturing mechanism portion 12a and the jaw portion 12b, respectively. The suture material 1 can be smoothly mounted on the suture portion 12 by covering the suture portion 12 with the bag-like suture material 1.

  In this state, as described above, the automatic suturing device is inserted into the living body through the surge port and reaches the affected area. At this time, the suturing material 1 attached to the automatic suturing device has a shape in which the bag-like material is pushed in from the closed portion, so that no deviation or twist due to contraction occurs.

  After the suture part 12 is introduced into the affected part, as shown in FIG. 5, the excision site of the living tissue 20 is sandwiched between the suture mechanism part 12a and the jaw part 12b. As a result, the excision site is covered with the main suture material 2.

  Next, the operation lever 13 a provided in the operation unit 13 of the automatic suturing device is operated to staple staples from the staple line 13. As a result, staples are driven along the excision site of the biological tissue 20 and a suture treatment is performed. At this time, the main suture material 2 of the suture material 1 attached to the suture part 12 is excised at the same time. It is pressed against the site and sutured with staples.

  The main suture material 2 functions as a reinforcing material at the time of suturing, and the cut portion of the living tissue 20 is sutured through the main suture material 2 to prevent tissue tearing. For example, excision of a giant lung cyst Etc., air leakage is prevented.

  Next, a knife provided in the suturing mechanism 12 a is scanned along the scanning line 15 to cut the living tissue 20 and the main suture material 2.

  Although the suturing procedure is completed as described above, by using the suturing material 1 of the present example, the suturing operation can be smoothly proceeded, and the sutured portion can be reliably reinforced and air leakage can be reliably prevented. FIG. 6 shows the sutured state, and the main suture material 2 is stitched to the stitched portion of the living tissue 20, and the stitched state is extremely stable.

Next, an embodiment of the medical suture material 21 according to the present invention. As shown in FIG. 7, the suture material 21 is formed by sewing two suture materials 22 and 23 together in a bag shape closed at the tip side.

  Each of the suture materials 22 and 23 constituting the medical suture material 21 is shaped so as to gradually become narrower toward the tip, and is sewn along both side edges by sewing threads 24 and 25. . The sewing threads 24 and 25 are crossed at the distal end portions of the sewing materials 22 and 23 depending on the shape of the sewing materials 22 and 23 to ensure the bag-like sewing.

  The sewing threads 24 and 25 used here are preferably so-called monofilaments in consideration of easiness of extraction as in the above-described medical suture material 1, and any material may be used. A suitable polymer yarn or a polyamide yarn (so-called nylon yarn) having good slipperiness is suitable.

  The suture materials 22 and 23 used here may be the same material or different materials. Specifically, the first suture material 22 was made of absorbable polyglycolic acid felt (for example, trade name Neobale, etc., manufactured by Gunze), and the second suture material 23 was made of another material. Thus, by using another material, cost can be reduced and it is advantageous in manufacturing.

  The medical suture material 21 according to the present invention is used by being attached to an automatic suturing device in the same manner as the suture material 1 preceding the present invention described above. Since it is the same, further detailed description is abbreviate | omitted.

  As mentioned above, although embodiment of this invention was described, it cannot be overemphasized that various deformation | transformation is possible in a material, a shape, etc., this invention is not limited to this embodiment.

It is a schematic perspective view which shows the medical suture material prior to this invention. It is a schematic perspective view which shows an example of an automatic suturing device. It is a principal part schematic perspective view of the suturing mechanism part of an automatic suturing device. It is a schematic perspective view which shows the mounting state to the automatic suturing device of a suture material. It is a schematic perspective view which shows the suturing operation state by an automatic suturing device. It is a schematic perspective view which shows the suture treatment completion state. 1 is a schematic perspective view showing an embodiment of the inventive medical suture material according to the present invention.

Explanation of symbols

  21 Medical suture material, 13 Staple line, 22, 23 Suture material, 24, 25 Sewing thread

Claims (8)

The portions of the two medical suturing materials superimposed on each other from both side edges to the front end side are sewn together with a sewing thread, and are sewn into a bag shape with the front end side closed, and the front end side portion sewn into the bag shape. is formed to be narrower gradually wide toward the tip, the medical suture, characterized in that it is can be mounted in an automatic suturing device having a staple line. The medical suturing material according to claim 1 , wherein the suturing material comprises at least one selected from a nonwoven fabric, a woven fabric, and a knit. The medical suture material according to claim 1 , wherein the suture material is made of a synthetic polymer. The medical suture material according to claim 1 , wherein at least one of the two medical suture materials is made of a bioabsorbable polymer. The medical suturing material according to claim 4 , wherein the bioabsorbable polymer is polyglycolic acid. The medical suturing material according to claim 1 , wherein the suturing material comprises a part of a living tissue. 7. The medical suture material according to claim 6 , wherein the living tissue is an organ protective film. The medical suture material according to claim 6 , wherein the living tissue is a pericardium.

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