Syringe with self-retracting needle
US5267976A · kind A · utility
66Cited by
3References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 4, 1992 |
| Grant date | Dec 7, 1993 |
| Priority date | — |
| Expiry date | Sep 4, 2012 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2005/3261
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A syringe comprises a body (1) which carries the needle (6), a piston (13), a protective sheath and a spring (17) arranged between the sheath (14) and the body (1). A first and a second shoulder (21) on the outer wall of the body (1) co-operate with a first spur (19) of the sheath (14) to block the body (1) in a first direction, which a second, supple spur (20) and a third shoulder (24) block the body (1) in the other direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.