Disposable hypodermic syringe with locking protective sheath
US6852096B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 26, 2000 |
| Grant date | Feb 8, 2005 |
| Priority date | — |
| Expiry date | Oct 26, 2020 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2005/3261
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Safety device for a syringe is constituted by a body, a needle carrier, a piston, and a piston plunger. The device includes a sheath and a body. The syringe body may slide axially inside the sheath between an injection position and a safe position. A return member urges the syringe body towards the safe position, and may be triggered automatically when the piston plunger is pushed into the body. A telescopic head is capable of taking up a retracted position and an extended position. A combination for locking the telescopic head in the extended position may be constituted by a combination of two oppositely-directed axial bearing surfaces bearing against two oppositely-directed axial bearing surfaces of the sheath, and two oppositely-directed lateral bearing surfaces which bear against two oppositely-directed lateral bearing surfaces of the sheath.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.