JPH01195892A - Triangular curved sutural needle - Google Patents

Abstract

PURPOSE:To prevent a sutured part from being incised as more than the necessity at the time of operational suture by forming a section of a sutural needle into a triangle, and setting one side of the curved inside or the outside to an obtuse ridgeline. CONSTITUTION:A bottom face 4 corresponding to a ridgeline 3 at a triangular rod tip part 2 made up by stamping a needle material 1 with a press ground gradually up to a removal line 5 so as to be deepened in proportion as going to the tip in particular. With this grinding, each of sharp cutting edges 6, 7 is formed at both ends of the bottom face 4 corresponding to the redgeline 3. In addition, the whole needle material 1 is curved into the specified form so as to cause the obtuse ridgeline 3 being formed out of an unworked press surface entire to be situated at the inside, whereby it is formed into a desired triangular curved sutural needle. In consequence, such a fear that a sutured part is incised as more than the necessity at the time of operational suture is preventable, while an edge of the sutural needle 1 can be prevented from incurring any damage or loss by making a needle holder contact with the obtuse ridgeline 3.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a suture needle, and particularly to a curved suture needle whose blade portion has a triangular cross section.

<Prior art> Conventional suture needles are, for example, disclosed in the Patent Publication No.
Publication No. 0-35151 or U.S. Patent No. 3038475
As shown in the specification, Japanese Utility Model Publication No. 513-2982, etc., the tip of a round needle material is pressed to form a triangular bar shape or a tapered triangular bar shaped needle material, and the entire triangular surface of each of these is uniformly formed. It was manufactured by forming cutting edges and ridge lines by grinding.

<Problems to be Solved by the Invention> However, it is difficult to uniformly grind the entire triangular surface of the triangular rod-shaped needle material, and the completed suture needle has sharp edges on each of the three ridge lines, making it difficult to perform surgical suturing. There are serious problems in that sometimes the suture part is incised more than necessary, and furthermore, when the suture needle is held by the needle holder, the edge may be damaged and the punctured tissue may be seriously injured.

The suture needle according to the present invention relates to a completely new technology developed in view of these conventional problems, and in particular prevents the formation of a sharp edge on one ridgeline and creates a blunt ridgeline on this ridgeline. This invention relates to a completely new triangularly curved suture needle configured with the

Means for Solving the Problems> The present invention provides a blade portion of a curved suture needle having a triangular cross section,
In order to form a blunt ridgeline on the inside or outside of the curve, the two surfaces forming the ridgeline are used as press surfaces, and the surface corresponding to the blunt ridgeline is used as a grinding surface, and both sides of the surface are provided with sharp cutting edges. This is a triangular curved suture needle.

As mentioned above, the blade of the suture needle according to the present invention has a triangular cross section and has a blunt ridge line on either the curved inner side or the outer side. can be prevented from being incised more than necessary.

Furthermore, when holding the suture needle with the needle holder, the needle holder can be brought into contact with a blunt ridgeline to prevent the edge of the suture needle from being damaged or broken.

<Example> To specifically describe an example of the suture needle and method for manufacturing the suture needle according to the present invention with reference to figures, in FIGS. 1 to 5, the tip of a needle material 1 for a suture needle is shown. By pressing the portion 2, the tip portion 2 is formed into a triangular rod shape.

Next, the bottom surface 4 of this triangular bar-shaped tip 2 corresponding to the ridgeline 3 is ground gradually, especially as it gets deeper toward the tip, up to the grinding line 5 shown in FIG. Sharp cutting edges 6.7 are formed on both ends,
And repair the shape of the tip as necessary.1. Furthermore, by curving the entire needle material 1 into a predetermined shape so that the blunt ridge line 3 formed from the unprocessed pressed surface is on the inside, a triangularly curved suture needle as shown in FIG. 5 is manufactured. I can do it.

In the above embodiment, the blunt ridgeline 3 that is left as it is without being ground is the ridgeline that is formed by the bottom of the V-shaped groove when the tip 2 of the needle material 1 is pressed, and is the thickest and has the largest radius. Therefore, this is a good choice, and by selecting this as a blunt ridgeline, the amount of grinding is smaller than when selecting this as another ridgeline to be ground, and the machining surface is also excellent.

In the above embodiment, the suture needle was manufactured by curving the blunt ridge line 3, which was left as is without being ground, to the inside.
It is also possible to manufacture a suture needle in which the blunt ridge line 3 is brought to one of the outer sides, and a sharp cutting edge 6 or 7 is positioned on the curved inner side and the other outer side, respectively.

Further, after the bending process, finishing processes such as heat treatment and electrolytic polishing are appropriately performed to complete the suturing needle, which is the same as the conventional process.

<Effects of the Invention> As described above, the suture needle according to the present invention is configured such that the unprocessed blunt ridgeline remains as it is on one side, and the edges on both sides consisting of the other two ridgelines serve as cutting edges. , the side cut needle constitutes a conventional cutting needle or a reverse cutting needle in which the obtuse ridge line, which is not ground at all, is on the inside or outside of the curve. Unlike needles, there is no risk of unnecessarily damaging tissue, and as mentioned above, there are no sharp edges at all on the ridges, so even when the needle tip is held with a needle holder like a conventional suture needle, there are no sharp edges. It has the characteristics that there is no risk of damage to the material.

Furthermore, since the suture needle according to the present invention has the structure as described above,
In manufacturing this suture needle, only the bottom surface can be ground at a certain angle without grinding the bottom surface and both sides as in the conventional method, making it extremely efficient and easy to work. It is reliable, therefore, the grinding work can be automated, and it also has the characteristics of being able to be mass-produced at low cost.

[Brief explanation of the drawing]

FIGS. 1 to 5 show a process for manufacturing a suturing needle according to the present invention and an embodiment showing the suturing needle according to the present invention. 1 is a needle material, 2 is a tip of the needle material 1, 3 is a blunt ridge line that is not ground, 4 is a bottom surface, 5 is a grinding line, and 6.7 is a cutting edge. Patent applicant Matsutani Seisakusho Co., Ltd. Representative Patent attorney Shukichi Nakakaku Figure 5

Claims (1)

[Claims] In the blade of a curved suture needle having a triangular cross section, in order to form a blunt ridgeline on the inside or outside of the curve, the two surfaces that form the ridgeline are pressed surfaces, and the surfaces corresponding to the blunt ridgeline are ground. A triangularly curved suture needle characterized by having a sharp cutting edge on both sides of the surface.