Hypodermic syringe with a safe needle cap
US5582594A · kind A · utility
18Cited by
4References
3Claims
0Family size
Inventor
Key dates
| Filing date | Dec 18, 1995 |
| Grant date | Dec 10, 1996 |
| Priority date | — |
| Expiry date | Dec 18, 2015 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2005/3224
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A hypodermic syringe wherein the neck of the barrel has a toothed portion raised around an inside wall thereof for passing the needle cannula and sloping in one direction; the needle cap has a plurality of toothed portions spaced around the periphery at different elevations and respectively sloping in one direction; the toothed portions of the needle cap are forced into engagement with the toothed portion of the neck of the barrel and stopped by it from backward movement when the needle cap is invertedly inserted into the neck of the barrel to seal the used needle cannula inside the barrel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.