JPS64951U

JPS64951U -

Info

Publication number: JPS64951U
Application number: JP9561287U
Authority: JP
Priority date: 1987-06-22
Filing date: 1987-06-22
Publication date: 1989-01-06
Anticipated expiration: 2002-06-22
Also published as: JPH0529718Y2

Description

[Brief explanation of the drawing]

第１図乃至第３図は本考案に係る注射器の実施
例を示し、第１図は注射器の縦断面図、第２図は
同要部拡大断面図、第３図は刺通針の後端部の拡
大断面図である。第４図は本考案の他の実施例を
示す一部破断正面図である。第５図及び第６図は
従来構造の注射器の要部拡大断面図及び縦断面図
を示す。１……外筒、２……内筒、３……プランジヤ、
４……刺通針、４１……後端部、４２……後端頭
部、５……栓体、７……軸心貫通孔、８……小孔
。 Figures 1 to 3 show an embodiment of the syringe according to the present invention, where Figure 1 is a longitudinal sectional view of the syringe, Figure 2 is an enlarged sectional view of the same main part, and Figure 3 is the rear end of the piercing needle. FIG. FIG. 4 is a partially cutaway front view showing another embodiment of the present invention. FIGS. 5 and 6 show an enlarged sectional view and a vertical sectional view of essential parts of a syringe having a conventional structure. 1...Outer cylinder, 2...Inner cylinder, 3...Plunger,
4... Piercing needle, 41... Rear end portion, 42... Rear end head, 5... Plug body, 7... Axial center through hole, 8... Small hole.

Claims

[Scope of utility model registration request]

An outer cylinder having a piercing needle attached to the tip thereof and having piercing parts at the front and rear ends, and a plug that is movably inserted into the outer cylinder and whose tip can be penetrated by the rear end of the piercing needle. A first tube is provided between the outer tube and the inner tube, and includes an inner tube provided with a body and a plunger inserted into the inner tube.
a second chemical liquid chamber is defined between the inner cylinder and the plunger, and the inner cylinder moves within the outer cylinder to reduce the volume of the first chemical liquid chamber to almost zero. When the plunger is opened, the rear end of the piercing needle is inserted into the stopper, and the piercing needle is switched from communicating with the first liquid chamber to communicating with the second liquid chamber. In a syringe configured to be able to inject a drug solution in a first drug solution chamber under pressure by a drug solution in a second drug solution chamber by a pushing operation, the head of the rear end of the piercing needle is inserted into the needle. The needle body is formed as a pointed head whose diameter is gradually reduced and the tip is sealed, and a shaft is attached to the side surface of the rear end of the piercing needle that protrudes from the inner edge of the plug body into the second drug chamber. A syringe characterized by having at least one small hole communicating with the heart through hole.