Title:
LOCKABLE LOW-RESIDUE SYRINGE
Document Type and Number:
WIPO Patent Application WO/2024/044929
Kind Code:
A1
Abstract:
Provided is a lockable low-residue syringe, comprising a barrel (1), a piston push rod (2), a piston (3), and a puncture needle assembly (4). The piston (3) is arranged on the piston push rod (2). The puncture needle assembly (4) comprises a needle hub. The needle hub and the barrel (1) are connected by means of an adaptor (1.2) and a port. A protruding rod (2.1) is arranged at the other end of the piston (3). The length of the protruding rod (2.1) is equal to the distance between the inner bottom of the port of the needle hub and the piston (3). The protruding rod (2.1) can operate inside a liquid outlet channel of the adaptor (1.2). The injection process is assisted by means of the movement of the protruding rod (2.1) inside the liquid outlet channel of the adaptor (1.2), such that the injection residue inside the adaptor (1.2) and the inner cavity of the port can be minimized, thereby reducing the waste of drugs and improving the utilization rate of drugs.
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Inventors:
CHEN YONGXI (CN)
Application Number:
PCT/CN2022/115685
Publication Date:
March 07, 2024
Filing Date:
August 30, 2022
Export Citation:
Assignee:
BESTWAY CHANGTING MEDICAL APPARATUS CO LTD (CN)
International Classes:
A61M5/178; A61M5/50
Foreign References:
| CN201453770U | 2010-05-12 | |||
| CN1539517A | 2004-10-27 | |||
| CN213852539U | 2021-08-03 | |||
| CN204170219U | 2015-02-25 | |||
| CN215134920U | 2021-12-14 | |||
| CN108421130A | 2018-08-21 | |||
| US20050020987A1 | 2005-01-27 |
Attorney, Agent or Firm:
FUZHOU ZHANHUI PATENT AGENCY(GENERAL PARTNERSHIP) (CN)
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