Syringe needle sheath
US7935087B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 18, 2005 |
| Grant date | May 3, 2011 |
| Priority date | — |
| Expiry date | Jul 18, 2025 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2005/3265
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A syringe is provided which comprises a barrel (11) and a needle sheath (30) slidably located within the barrel, a plunger (20) with a plunger seal (23), a needle, a needle sheath (30) and a sheath seal (50), arranged so that depression of the plunger forces the needle sheath to move into a position where it covers or at least partly encloses the needle after delivery of fluid contents of the syringe. The needle sheath may be manually actuated or may be actuated by decompression of a spring. The syringe may further comprise a plunger disabling means operable to impede, prevent or otherwise hinder withdrawal of the plunger during or following depression of the plunger. The syringe may be a pre-filled syringe or a syringe which is filled by a user.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.