JPH0180142U

JPH0180142U -

Info

Publication number: JPH0180142U
Application number: JP1987175968U
Authority: JP
Priority date: 1987-11-17
Filing date: 1987-11-17
Publication date: 1989-05-30
Also published as: JPH0344208Y2

Description

[Brief explanation of drawings]

第１図〜第８図は本考案の第１実施例を示すも
ので、第１図一部破断正面図、第２図は中央縦断
面拡大図、第３図は第２図のＡ―Ａ線断面図、第
４図は第２図のＢ―Ｂ線断面図、第５図は針先進
出状態を示す中央縦断面図、第６図は第５図のＣ
―Ｃ線断面図、第７図は血管に注射針を刺し込ん
だ状態の説明図、第８図は点滴中の針先退入状態
説明図、第９図及び第１０図は本考案の第２実施
例を示し第９図は要部中央縦断面図、第１０図は
第９図の平面図、第１１図及び第１２図は本考案
の第３実施例を示し第１１図は要部中央縦断面図
、第１２図は第１１図のＤ―Ｄ線断面図、第１３
図は注射器に装着された注射針の従来例を示す正
面図、第１４図は点滴器に装着された注射針の従
来例を示す正面図、第１５図及び第１６図は従来
例による血管注射の状態を示す説明図である。１……注射針、２……注射器または点滴器、３
……先端部材、４……針先、５……液通孔、６…
…内針、７……先端、８……外針、９……内針保
持筒、１４……外針保持筒。 Figures 1 to 8 show the first embodiment of the present invention, with Figure 1 being a partially cutaway front view, Figure 2 being an enlarged longitudinal cross-sectional view of the center, and Figure 3 being A-A in Figure 2. 4 is a sectional view taken along the line B-B in FIG. 2, FIG. 5 is a central vertical sectional view showing the needle advanced state, and FIG. 6 is C in FIG. 5.
-C-line sectional view, Figure 7 is an explanatory diagram of the state in which the injection needle is inserted into the blood vessel, Figure 8 is an explanatory diagram of the state in which the needle tip is withdrawn during infusion, and Figures 9 and 10 are the diagrams of the present invention. FIG. 9 shows a central longitudinal sectional view of the main part, FIG. 10 is a plan view of FIG. 9, and FIGS. 11 and 12 show a third embodiment of the present invention, and FIG. 11 shows the main part. The center vertical sectional view, Figure 12 is the DD line sectional view of Figure 11, and Figure 13.
The figure is a front view showing a conventional example of a hypodermic needle attached to a syringe, Figure 14 is a front view showing a conventional example of a hypodermic needle attached to a dropper, and Figures 15 and 16 are vascular injections according to conventional examples. It is an explanatory diagram showing a state. 1... needle, 2... syringe or dropper, 3
... Tip member, 4 ... Needle tip, 5 ... Liquid passage hole, 6 ...
...Inner needle, 7...Tip, 8...Outer needle, 9...Inner needle holding cylinder, 14...Outer needle holding cylinder.

Claims

[Scope of utility model registration request]

An inner needle 6 having a sharp needle tip 4 and a liquid passage hole 5 is inserted into a tubular outer needle 8 whose tip 7 is cut approximately perpendicular to the axis so as to be slidable relative to each other in the axial direction. so that the needle tip 4 can move in and out from the tip 7 of the outer needle 8, and the proximal end of the inner needle 6 or outer needle 8 is fitted into the tip member 3 of the syringe or dropper 2 via the needle holding cylinders 9, 14. A hypodermic needle characterized in that it can be attached together.