Title:
NEEDLELESS SYRINGE
Document Type and Number:
Japanese Patent JPS57177766
Kind Code:
A
Abstract:
In this injection instrument, the piston pump (A) is connected to a drive motor (B), of which the working piston (5), supported on a working spring (2), is arranged displaceably in a cylindrical bore (6) of the motor housing (1). A pressure chamber (7) which has supply devices (3, 8) and discharge devices for the pressure medium is formed in the bore (6). The working spring (2) is held in a tensioned position by a pawl (10) supported by a bolt (13), the bolt (13) being supported on an operating element (C). So that injection can be initiated only when the nozzle (23) is pressed onto the subject, the bolt (13) is connected rigidly to the operating element (C), and its free end is arranged displaceably in the motor housing (1).
Inventors:
HANSUUYURUGEN DETSUTOBARUN
YOOZEFU TSUIMUMERUMAN
YOOZEFU TSUIMUMERUMAN
Application Number:
JP6184282A
Publication Date:
November 01, 1982
Filing Date:
April 15, 1982
Export Citation:
Assignee:
HOECHST AG
International Classes:
A61M5/30; A61M5/20; (IPC1-7): A61M5/30