Injection syringe
USRE43834E1 · kind E1 · reissue
124Cited by
130References
48Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 21, 2003 |
| Grant date | Nov 27, 2012 |
| Priority date | — |
| Expiry date | May 21, 2023 |
Classification
- Technology area (CPC —)General
Abstract
The present invention provides an injection syringe comprises a housing including a holder for containing a cartridge of medicine, a piston rod with a non-circular cross-section having an outer thread, a piston rod drive, a one way coupling having an annular ring of internal ratchet notches, which annular ring can be integral with the housing, and a pawl having at least a pair of resilient arms each having a free end.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.