Title:
PISTON PUMP FOR NEEDLELESS SYRINGE
Document Type and Number:
Japanese Patent JPS57177765
Kind Code:
A
Abstract:
1. A piston pump for needle-less injection instruments, in which a valve body (3) an outlet channel (8) and outlet valve for the medium to be injected is located in the pump chamber (5), wherein the valve body (3) has an inlet channel (7) for feeding into the pump chamber (5) the medium to be injected, and a non-return flap (16) is located in a widened portion of the inlet channel (7), and the outlet channel (8) is connected to an annular groove (22) in the valve body (3) in which a sealing ring (23) is located which acts in cooperation with the annular groove (22) as a non-return outlet valve.
Inventors:
HANSUUYURUGEN DETSUTOBARUN
YOOZEFU TSUIMUMERUMAN
YOOZEFU TSUIMUMERUMAN
Application Number:
JP6184182A
Publication Date:
November 01, 1982
Filing Date:
April 15, 1982
Export Citation:
Assignee:
HOECHST AG
International Classes:
A61M5/30; A61M5/20; A61M5/31; (IPC1-7): A61M5/30