JPS5941429U

JPS5941429U - Needle

Info

Publication number: JPS5941429U
Application number: JP13586982U
Authority: JP
Inventors: 皆川　芳範
Original assignee: テルモ株式会社
Priority date: 1982-09-09
Filing date: 1982-09-09
Publication date: 1984-03-16

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は従来の注射針とシリンジとの接続状態を示す軸
線に沿った断面図、第２図ａ及びｂはそれぞれ異なる従
来の注射針の要部斜視図、第３図は同上におけるｍｂ−
ｍｂ断面図、第４図ａは本考案の実施例にかかる注射針
の正面図、第４図ｂ１は同上の右側面図、第５図ａ及び
ｂはそれぞれ本考案の注射針の掛止突起を正面より見た
要部拡大図、第６図は本考案の注射針の掛止突起と相手
方のシリンジ等の雌ねじとが螺合している状態を示す要
部展開図、第７図は本考案の注射針の掛止突起と相手方
のシリンジ等の台形ねじとが螺合している状態を示す要
部拡大断面図である。Ａ・・・注射針、１・・・針管、２・・・針基、２ｂ・
・・テーパ一孔、２Ｃ・・・円筒面、３・・・掛止突起
、３ａ・・・針管刃先側側辺、３ｂ、　　３ｃ・・・側
辺。Fig. 1 is a sectional view taken along the axis showing the connection state between a conventional injection needle and a syringe, Figs.
mb sectional view, FIG. 4 a is a front view of the injection needle according to the embodiment of the present invention, FIG. 4 b1 is a right side view of the same as above, and FIGS. Fig. 6 is an enlarged view of the main parts seen from the front, Fig. 6 is an exploded view of the main parts showing the state in which the latch protrusion of the injection needle of the present invention is screwed together with the female thread of the mating syringe, etc., and Fig. 7 is the main part exploded view of the present invention. FIG. 2 is an enlarged cross-sectional view of a main part showing a state in which a locking protrusion of the invented injection needle and a trapezoidal screw of a mating syringe or the like are screwed together. A... Syringe needle, 1... Needle tube, 2... Needle base, 2b.
...Tapered hole, 2C...Cylindrical surface, 3...Latching protrusion, 3a...Needle tube cutting edge side side, 3b, 3c...Side side.

Claims

[Scope of Claim for Utility Model Registration] 1. A needle tube, having a tapered cylindrical hole which is fixed to the rear end of the needle tube, has a smaller diameter in the direction of the needle tube than the end surface, and communicates with the needle tube, and has a cylindrical surface on the outer edge of the end surface in a radial direction. In an injection needle comprising a needle base having at least two protruding protrusions, the side of the protrusion toward the distal end of the needle tube is approximately convex outward at an angle with respect to the axis of the needle base. A hypodermic needle characterized by an arcuate shape. 2. The injection needle according to claim 1, wherein the latching protrusion has a side surface on the distal end side of the needle tube and a side surface adjacent thereto that are connected to form a curved surface.