JPH0358435U

JPH0358435U -

Info

Publication number: JPH0358435U
Application number: JP11919989U
Authority: JP
Priority date: 1989-10-13
Filing date: 1989-10-13
Publication date: 1991-06-06

Description

[Brief explanation of the drawing]

第１図はこの考案の一実施例を示す留置針用注
射器の構造を示す説明図、第２図は従来の留置針
用注射器の構成と使用方法の説明模式図、第３図
はこの考案のロツク機構を有するカラーの背面の
部分説明図、第４図は同じくカラーの正面の部分
説明図、第５図は第４図のカラー部材の構造を示
す部分拡大図である。図において、１は注射器、２は注射筒、３はプ
ランジヤー、３ａはプランジヤーのリブ、４はハ
ンドル、５はラバーチツプ、６はルアーチツプ、
７は金属針、８はカニユーレ（留置針）、９は被
検生体、１０は血管、１１は血液、１２はつば、
１３はカラー、１３ａ，１３ｂはカラー部材、１
４は凸部、１５は貫通穴、１６は結合部分、１７
はリツプ、１８は平行部、１９はナイフエツジ、
２０はカラーの内側円部、２１はストツパー、２
２は凹状平行部である。 Fig. 1 is an explanatory diagram showing the structure of an indwelling needle syringe showing one embodiment of this invention, Fig. 2 is a schematic diagram illustrating the structure and usage method of a conventional indwelling needle syringe, and Fig. 3 is an explanatory diagram of the structure of a conventional indwelling needle syringe. FIG. 4 is a partial explanatory view of the back side of the collar having a locking mechanism, FIG. 4 is a partial explanatory view of the front side of the collar, and FIG. 5 is a partially enlarged view showing the structure of the collar member shown in FIG. 4. In the figure, 1 is a syringe, 2 is a syringe barrel, 3 is a plunger, 3a is a rib of the plunger, 4 is a handle, 5 is a rubber tip, 6 is a lure tip,
7 is a metal needle, 8 is a cannula (indwelling needle), 9 is a living body to be examined, 10 is a blood vessel, 11 is blood, 12 is a collar,
13 is a collar, 13a and 13b are collar members, 1
4 is a convex portion, 15 is a through hole, 16 is a connecting portion, 17
is the lip, 18 is the parallel part, 19 is the knife edge,
20 is the inner circular part of the collar, 21 is the stopper, 2
2 is a concave parallel portion.

Claims

[Scope of Claim for Utility Model Registration] An indwelling needle fitted into a metal needle attached to the Lure tip of a syringe; formed on the end face of the opening of the inner barrel of the syringe;
a collar having two parallel chord parts; a collar fitted with a lip in the parallel chord direction of the collar and having an inner diameter equal to the inner diameter of the inner cylinder; and an inner side of the parallel part of the collar. a knife edge provided to form the parallel portion; a stopper located approximately in the center of the parallel portion and formed perpendicular to the direction of the knife edge; and a plunger of the syringe having a plunger shaft comprising a plurality of ribs. By rotating the handle of the plunger at an arbitrary position in the inner cylinder in the axial direction of the plunger, the ridge of the rib is locked in a notched state at the tip of the knife edge, and
An indwelling needle syringe characterized in that the stopper has plunger locking means for preventing rotation of the plunger in the same direction as the rotation.