Title:
MECHANICAL AUTOMATIC INJECTION PEN
Document Type and Number:
WIPO Patent Application WO/2024/055268
Kind Code:
A1
Abstract:
The present invention relates to a mechanical automatic injection pen, which is used for accommodating a needling instrument with a medicament to perform an injection operation. The mechanical automatic injection pen comprises a first assembly and a second assembly that can be combined. The first assembly comprises a first pipe body, a pulling piece, a push rod, a locking piece, a first elastic piece, and a second elastic piece, and the second assembly comprises a second pipe body and an actuating piece. The locking piece is actuated by means of the actuating piece to relieve a locking state of the push rod, so that the push rod moves, by means of the second elastic piece, towards the needling instrument along an axis to push the medicament for the injection operation. After the injection operation is completed, the pulling piece can move, by means of external force, in a direction away from the second pipe body along an axis, so that the push rod is gradually driven to return to a position before the injection operation is performed, and the push rod is locked by the locking piece again. By means of the first elastic piece, the pulling piece is made to return to a position before the pulling piece is driven by the external force to move. Therefore, the push rod can be made to return by operating the pulling piece, so that the effect of reuse is achieved.
Inventors:
YE GUOHUI (CN)
Application Number:
PCT/CN2022/119208
Publication Date:
March 21, 2024
Filing Date:
September 16, 2022
Export Citation:
Assignee:
JIAXING SUMMED MEDTECH CO LTD (CN)
International Classes:
A61M5/20
Foreign References:
| CN103025372A | 2013-04-03 | |||
| CN103476445A | 2013-12-25 | |||
| CN106492313A | 2017-03-15 | |||
| US20130281935A1 | 2013-10-24 |
Attorney, Agent or Firm:
SHANGHAI BOTAI MINAN INTELLECTUAL PROPERTY AGENCY (GENERAL PARTNERSHIP) (CN)
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