Injection syringe
US6235004A · kind A · utility
442Cited by
6References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 28, 1999 |
| Grant date | May 22, 2001 |
| Priority date | — |
| Expiry date | Oct 28, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M5/31575
- WIPO fieldMedical technology
- WIPO sectorInstruments
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.