JPH1085225A - Surgical suturing needle with tapered yarn - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a needle hole as fine as possible when the tissue is sutured in a surgical operation, and minimize the bleeding or tissue damage by tapering one end of a suture, and connecting a suturing needle having a diameter smaller than the diameter of the suture body part thereto. SOLUTION: A nylon yarn entirely having an uniform thickness is prepared, and a tapered yarn of a form in which only a part 14 close to one side tip is reduced in diameter as it approaches to the tip is manufactured. A suturing needle 15 having a thickness suitable to the yarn of this slender part or a diameter smaller than the diameter of the suture body part is prepared, and the tip of the tapered yarn is inserted and connected to a fine cylindrical recessed part 16 provided on the cut end part, whereby a suturing needle with tapered yarn is manufactured. Thus, a suturing needle slightly slender than a suture can be manufactured, and a trouble in operation such as bleeding can be sharply reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disposable surgical needle with a suture.

[0002]

2. Description of the Related Art When performing a surgical operation, it is necessary to suture various organ tissues with a needle and a thread, and a disposable product in which a suture is connected to a suture needle in advance is generally used.

As shown in FIG. 1A, a metal needle having a circular cross section and a curved shape of an ordinary sewing needle is used as the suture needle with a suture. Various sutures 2 having a constant thickness are connected to the recess 1 as shown in FIG. 1B.

[0004] The tip of each suture needle is machined to have a very sharp property so that the tissue can be penetrated with a small force of the surgeon and the tissue is not unnecessarily damaged. After the insertion of the suture into the cylindrical recess having a diameter slightly larger than the diameter of the suture to be connected, the suture is added by adding an adhesive or pressing and deforming from the outer periphery of the recess. Connected.

[0005] In order to adopt the method of connecting sutures as shown on the left,
Except for the tip of the suture needle, the cross-sectional diameter of the suture needle is necessarily larger than the suture diameter.

Due to the characteristics of such a structure, the diameter 4 of the hollow portion of the tissue formed by the perforation of the suture needle 3 is naturally larger than the diameter 5 of the suture as shown in the cross-sectional view at the time of tissue suturing in FIG. If the blood vessel 6 is present at the puncture site, the blood vessel 6 is damaged, and as a result, bleeding is observed from the needle hole 8 through the gap 7 between the suture and the cavity.

[0007] For the same reason, even when directly anastomosing a blood vessel or a digestive tract, blood or digestive juice leaks from the needle hole through a gap formed between the needle hole and the suture.

[0008]

The smaller the gap between the tissue and the suture, which occurs when the suture is replaced with the suture needle in the space created by the suture needle while penetrating the tissue, the more leak therefrom. The amount of blood that flows out is small, which is advantageous for surgery.

Also, if a suture thicker than the space formed by the suture needle can be inserted therein, the space will be compressed by the suture and no bleeding will occur.

Further, even when it is necessary to suture with a certain thickness of suture in order to obtain the strength of the suturing portion, the thinner the suturing needle used for this is, the smaller the suturing needle used to obstruct other important tissues such as nerves. The likelihood of doing so is reduced.

From the viewpoint of the present invention, the present invention provides a suture needle with a suture thread which can be closed in a fine needle hole as much as possible when suturing a tissue by a surgical operation so that bleeding and tissue damage can be minimized. It was created for the purpose of providing.

[0012]

As shown in FIG. 3, when a tissue is punctured by using a tapered needle having a smaller diameter as it is closer to the distal end of the same structure as a needle used for normal suturing, the first step is Tissue destruction occurs at the tip 9 of the needle,
The rear portion of the needle penetrates the tissue while expanding the needle hole while expanding or destroying the tissue while pushing and expanding the minute gap with the wedge-shaped portion 10.

As shown in FIG. 4, a nylon thread processed so that one end of the thread becomes thinner from the middle toward the tip is prepared, and a fine needle 13 adapted to the diameter of the cut end 12 of the thread is prepared. A connected needle with a thread was produced.

After penetrating the tissue with the thin needle, the needle is grasped and the thread is pulled. When the thread is pushed and spread by the tapered portion 11, the thread is easily drawn into the puncture hole up to the thick part of the thread. .

As explained above, the first puncture of the tissue when penetrating the tissue with a suture needle with a suture thread uses a fine metal needle, and usually the tissue is pierced while pushing the tissue with a wedge-shaped portion of the needle. By adopting a means for assigning the threading role to the tapered portion of the suture, a thick thread can be inserted even into a small needle hole.

The present invention has been devised in order to produce a surgical needle with a surgical suture which utilizes the above-mentioned phenomenon and requires less bleeding at the puncture site and minimizes tissue damage.

[0017]

Embodiment 1 The present invention will be explained by showing a disposable suture needle to which the concept of a suture needle with a taper thread according to the present invention is applied.

As shown in FIG. 5, a nylon thread having a uniform thickness as a whole is prepared, and only a portion 14 near one end of one end has a shape whose diameter becomes smaller toward the tip.
A tapered yarn was produced.

A thin suturing needle 15 having a thickness suitable for the thin portion of the thread and having the shape shown above is prepared, and the tip of the tapered thread is inserted into the fine cylindrical recess 16 provided at the stump. To form a suture needle with a tapered thread.

[0020]

Embodiment 2 As shown in FIG. 6, a so-called knitting yarn, which is woven so as to wrap around a core yarn 17 inserted at the center with many intersecting yarns 18, is prepared. FIG. 7 shows that when the core yarn at the distal end side is pulled out and cut in 19 parts near the stump, the stumps of the yarn are gripped and pulled in the opposite direction.
A tapered knitting yarn as shown in FIG.

A thin suture needle having the thickness shown above and having a shape adapted to the thin portion of the tapered knitting yarn is prepared, and the tip of the tapered yarn is inserted into the fine columnar recess provided at the cut end. By inserting and connecting, a suture needle with a tapered knitting thread was produced.

[0022]

According to the structure of the conventional suture needle with a suture thread, the diameter of the needle is naturally larger than that of the suture thread due to the structure in which the thread is inserted into the concave portion provided at the end of the needle. A gap is created between the tissue and the suture at the puncture site.

For this reason, if there is a blood vessel here when the tissue is punctured, bleeding is recognized from the punctured blood vessel,
Bleeding did not stop from the needle hole when suturing blood vessels,
Surgery was often interrupted.

However, the suture needle with a suture configured as described above can be connected to a suture needle of any thickness.

Therefore, it is possible to manufacture a suture needle much thinner than a suture, and it is considered that troubles during the operation such as bleeding are drastically reduced.

[Brief description of the drawings]

FIG. 1 is an explanatory view of a conventional suture needle with a thread for a surgical operation.

FIG. 2 is an explanatory view at the time of suturing with a conventional suture needle with a thread for a surgical operation.

FIG. 3 is an explanatory view of a tapered needle.

FIG. 4 is an illustration of a tapered suture.

FIG. 5 is an illustration of a suture needle with a tapered suture.

FIG. 6 is an explanatory view of a knitting yarn.

FIG. 7 is an explanatory view of a tapered knitting yarn.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Depressed part 2 Suture 3 Suture needle 4 Diameter of hollow part 5 Diameter of suture 6 Blood vessel 7 Gap 8 Needle hole 9 Tip part 10 Wedge-shaped part 11 Tapered part 12 Tip break 13 Thin needle 14 Tapered tip 15 Thin Suture needle 16 Fine cylindrical recess 17 Heart thread 18 Intersecting thread 19 Cutting part of thread

Claims (1)

[Claims] 1. A surgical suture needle in which one end of a suture is formed in a tapered shape, and a suture needle having a diameter smaller than a diameter of a suture body is connected to the one end.