JP2826144B2 - Biological organ anastomosis instrument - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention is intended to support an anastomosis by inserting a living body organ such as a blood vessel or an intestinal tract into an anastomosis to support the living body organ. The present invention relates to a medical device used for:

[Conventional technology]

As a method of anastomosis between hollow living organs such as blood vessels and intestinal tracts, a method of simply suturing an anastomotic portion with a suture has been used for a long time. There were many difficulties with blood vessels. Therefore, there is a problem that the operation requires experience and skill and takes a long time. Therefore, in order to improve such a problem, Japanese Patent Application Laid-Open No. 61-217170 and Japanese Utility Model Application Laid-Open No. 61-29720 disclose an instrument for assisting an anastomotic operation. Since these instruments are made of bioabsorbable materials, they maintain their strength until the living organs adhere to each other after surgery.These instruments disappear after a certain period of time and do not remain as foreign substances in the living body. is there.

[Problems to be solved by the invention]

The present inventors performed an anastomosis experiment using an animal using a conventional living organ anastomosis instrument, and found that the instrument was always kept in an appropriate position during the anastomosis operation because the instrument was slippery with respect to the living organ. It was difficult to keep. Therefore, it was found that the anastomosis could not be performed efficiently and the operation time could not be shortened much.

An object of the present invention is to provide a living organ anastomosis device capable of performing an efficient anastomosis.

[Means for solving the problem]

In the present invention, in order to achieve the above-mentioned object, a protrusion for holding the anastomotic instrument with a surgical instrument when performing an anastomotic operation is provided at one end of the instrument. Further, as a more preferable embodiment, a hole is formed in the anastomosis instrument so that the instrument and the living organ can be securely fixed not only at the time of anastomosis but also after the anastomosis as well as at the time of anastomosis. did.

That is, the first invention of the present application is a cylindrical instrument which supports an anastomotic portion of a living organ and assists anastomosis when hollow living organs are anastomosed with each other. A device for anastomosis of a living body organ provided with an extending protruding portion. According to a second aspect of the present invention, there is provided the living organ anastomosis instrument according to the first aspect, wherein one or more holes for inserting sutures are formed in the cylindrical body.

[Action]

When using the anastomotic device of the present invention, as shown in FIG. 2, the anastomotic device of the present invention was fitted around one of two living organs to be anastomosed and provided at one end of the device. The protrusion and the living organ are grasped and fixed together by a surgical instrument. In the case where a hole for inserting a suture is formed in the cylindrical body, a suture is passed through the hole and the suture is sutured to permanently fix the instrument and the living organ. Next, the end of the living body organ is turned over and placed on the anastomosis instrument of the present invention, and the other living body organ is fitted thereon to bring the inner surfaces of the organs into close contact with each other. Bind with. Finally, the surgical instrument for grasping the anastomosis instrument and the living organ is removed, and the anastomosis operation is completed. In this manner, anastomosis between hollow living organs can be performed efficiently and reliably.

〔Example〕

FIG. 1 shows an embodiment of the anastomotic device of the present invention. As shown in the figure, the anastomosis instrument 1 has a cylindrical shape, and one end is partially extended to form a projection 2. In this embodiment, the protruding portion 2 has a 1/3 partial circumference and the same length as the length of the main body. However, the shape is not limited to this, and the shape is a bar or a plate. You may.
In short, any material having a width and a length that can be grasped together with the living organ may be used. Two holes 3 are formed on the front and back near the end opposite to the protrusion 2. The position and the number of holes may be any suitable for suturing and fixing the anastomotic instrument 1 to a living organ, and preferably 2 to 4 holes are provided near the end. The size of the hole may be such that the suture can be passed through.

FIG. 2 shows a procedure for anastomosis of a hollow living body organ using this anastomosis instrument. As described above, first, the anastomosis instrument 1 of the present invention is inserted outside one of the living organs 4 so that the side opposite to the side on which the protrusion is provided is the end of the living organ (FIG. 2). a). Then, after the protruding portion 2 and the living organ 4 are grasped together by the surgical instrument 6 (FIG. 2B). By suturing the living organ with the suture thread 7 through the hole 3 (FIG. 2c), the anastomosis instrument of the present invention and the living organ 4 are fixed. Next, the end 5 of the living organ 4 is turned over, and the inner surface of the living organ 4 is turned upside down and overlapped on the anastomosis instrument 1 (FIG. 2d). Then, it is tied with a suture 10 from above (FIG. 2e). Finally, the surgical instrument for grasping the anastomosis instrument 1 and the living organ 4 is removed, and the anastomosis operation is completed. Performing an anastomosis in such a procedure allows the anastomosis operation to be completed in a short time, which is convenient when it is necessary to anastomize blood vessels as quickly and as possible as in organ transplantation.

The instrument for anastomosis of the present invention is preferably formed of a bioabsorbable material since it does not need to be taken out later. Suitable bioabsorbable materials include various aliphatic polyesters, chitin, collagen and polyamino acids. More specifically, aliphatic polyesters include glycolic acid, lactic acid, β-hydroxybutyl carboxylic acid, β-hydroxyvalerate, β-propiolactone, γ-butyrolactone, γ-valerolactone, δ-
Valerolactone, δ-caprolactone, ε-caprolactone, methyl-ε-caprolactone, p-dioxanone,
Examples thereof include homopolymers and copolymers obtained by polymerizing methyl-p-dioxanone, dimethyl-p-dioxanone, and the like. As a method for producing the anastomotic device of the present invention from these polymers, a melt molding method typified by an injection molding method or a solution molding method in which a polymer solution is shaped and dried and solidified may be employed. it can.

〔The invention's effect〕

If the living organ is anastomosed by the anastomosis method as described above using the anastomosis instrument of the present invention, the anastomosis can be performed easily and quickly. Since the protruding portion is provided at the end of the anastomosis instrument, the anastomosis operation can be performed by easily grasping and fixing the instrument and the living organ with the surgical instrument. Therefore, quick and reliable anastomosis is possible, and the safety of the operation is enhanced, the operation time is shortened, and the advantages of reducing the burden on the patient are obtained. In addition, when the living organ is a blood vessel, the blood vessel is simultaneously closed and blood stopped by grasping the protrusion, which is convenient.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of the anastomotic device of the present invention, and FIGS. 2a to 2e are perspective views showing a procedure for anastomosis of a living organ using the present device. 1 ... anastomosis instrument 2 ... protruding part 3 ... hole

Claims (2)

(57) [Claims] 1. A cylindrical instrument for supporting an anastomosis part of a living organ and assisting an anastomosis when an anastomosis is performed between hollow living organs, wherein a protruding part partially extends one end of the cylindrical body. An instrument for anastomosis of a living organ, comprising: 2. The device for anastomosis of a living organ according to claim 1, wherein one or more holes for inserting sutures are formed in the cylindrical body.