Title:
INJECTOR
Document Type and Number:
Japanese Patent JPH02243162
Kind Code:
A
Abstract:
PURPOSE: To facilitate the selective retraction of a needle into a cylinder after usage by the constitution that a piston provides the corn-shaped tip of a same shape or a small harpoon-shaped tip at the end portion of a plunger, and the tip is coupled with the inside portion of a needle holder by adding the fixed amount of a pressure, and then the needle is retracted when the plunger is returned again. CONSTITUTION: An injector comprises a needle 1, the holder 2, a plunger 4 having the needle 1 fixed in a concave portion 5 and the rim 3 of facilitating the pushing of the plunger 4. A spring 18 is constantly provided at between the flexible body of a piston 12 and an Ω-shaped part 14. In this case, a lag located at the end portion of the Ω-shaped part 14 is destroyed when the plunger is pushed, as the consequence of the stress of a material, the tip is entered into the part 7 of the needle. The lateral bar for preventing the release of a pressure by the spring is once destroyed, the inside part of the plunger is released and then the needle is retracted.
Inventors:
BISENTE MIGERU SEGI PASUTORU
AMANDO GARIANA SABATERU
ENRIKA SEGI PASUTORU
AMANDO GARIANA SABATERU
ENRIKA SEGI PASUTORU
Application Number:
JP20150689A
Publication Date:
September 27, 1990
Filing Date:
August 04, 1989
Export Citation:
Assignee:
BISENTE MIGERU SEGI PASUTORU
AMANDO GARIANA SABATERU
ENRIKA SEGI PASUTORU
AMANDO GARIANA SABATERU
ENRIKA SEGI PASUTORU
International Classes:
A61M5/178; A61M5/20; A61M5/315; A61M5/32; A61M5/50; (IPC1-7): A61M5/178; A61M5/315
Attorney, Agent or Firm:
Michiko Shinoda (1 outside)
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