medical suture needle

Abstract

The strength of the end portion formed with the sharp point in the medical suture needle is maintained, and the resistance when passing through the tissue is reduced. A medical suture needle, which is made of austenitic stainless steel with fibrous elongated tissue, and the cross section of the medical suture needle is triangular, wherein, the medical suture needle has: clamping peak ( 20) Two first bevels (11) that are ground; a bottom surface (13) sandwiched by the two first bevels and ground (13), the peak is formed to have: the first cutting edge (1) , which is formed by intersecting two first inclined surfaces (11); the peak portion (20), which is on the main body side of the first cutting edge, is formed by making the first inclined surfaces (11) not intersect; and the first 2. The cutting edge (2), which is located at the end side of the first cutting edge (1), is formed by intersecting two second bevels (12) that are ground between the first cutting edge (1). The length (L2) of the first cutting edge is in the range of 3 times to 20 times the length (L1) of the second cutting edge (2), and the end (3) of the second cutting edge (2) is offset from the center of the material s position.

Description

technical field [0001] The present invention relates to a medical suturing needle with a triangular cross-section used in suturing living tissues, in particular to a medical suturing needle with small piercing resistance and high strength. Background technique [0002] With regard to medical suture needles, there are provided various kinds of suture needles having an optimal shape corresponding to a target suture site. Among them, there is a medical suture needle called a triangular needle having a blade having a sharp tip and a cutting edge continuous with the tip, and the blade has a triangular cross section. A general triangular needle is constituted to have: a blade portion whose thickness increases from the tip to the main body portion, and the blade portion is formed with a cutting edge at least at one ridge line; and a main body portion which is continuous with the blade portion. formed, to be held by the needle holder; and a base end (yuan end) portion, which is for...

AI Technical Summary

Problems solved by technology

[0012] Especially in the case of a triangular needle, if the increase rate of the thickness at the blade portion is reduced, the resistance when passing through the tissue can be reduced, but the following problem occurs: the sharp point formed at the end is inserted and Deforms easily when passing through tissue

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