Structure of safety hypodermic syringe
US5575774A · kind A · utility
40Cited by
4References
4Claims
0Family size
Inventor
Key dates
| Filing date | Oct 24, 1995 |
| Grant date | Nov 19, 1996 |
| Priority date | — |
| Expiry date | Oct 24, 2015 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2005/3224
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A safety hypodermic syringe in which the needle holder has an arrowhead-like rear retaining hole; the rubber stopper has an arrowhead-like retainer rod that can be forced into engagement with the retaining hole of the needle holder for permitting the needle holder with the needle cannula to be pulled backwards to the inside of the barrel by the plunger; the plunger can be disconnected from the rubber stopper and then inserted into the front end of the barrel to deform the needle cannula when the needle cannula is received on the inside of the barrel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.