Title:
INJECTION HEAD OF NEEDLELESS SYRINGE, NEEDLELESS SYRINGE BODY, AND NEEDLELESS SYRINGE
Document Type and Number:
Japanese Patent JP2023053994
Kind Code:
A
Abstract:
To provide an injection head of a needleless syringe, a needleless syringe body, and a needleless syringe.SOLUTION: An injection head of a needleless syringe 4 includes a medicine tube 21 and a piston rod 22. The medicine tube opens at a rear end and has an injection micropore at a front end. A piston of a piston rod is movable within a chamber in a front-rear direction, the piston and a sidewall and a front wall of the medicine tube jointly define a medicine liquid receiving chamber 215. The piston rod is provided therein with a medicine liquid channel. The injection head and a vial 1 can be mounted together on the needleless syringe body, the medicine liquid can flow via the medicine liquid channel into the medicine liquid chamber, and the piston rod can eject medicine liquid within the medicine liquid receiving chamber outside via the injection micropore.SELECTED DRAWING: Figure 17
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Inventors:
zan, min
Application Number:
JP2023012557A
Publication Date:
April 13, 2023
Filing Date:
January 31, 2023
Export Citation:
Assignee:
Beijing QS Medical Technology Company, Limited
International Classes:
A61M5/307
Attorney, Agent or Firm:
Rika Fukami
Tomohiro Matsuno
Seiichi Sakatani
Hiroshi Nomoto
Tomohiro Matsuno
Seiichi Sakatani
Hiroshi Nomoto