Retractable needle syringe assembly
US7988663B2 · kind B2 · utility
29Cited by
56References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 12, 2005 |
| Grant date | Aug 2, 2011 |
| Priority date | — |
| Expiry date | Aug 12, 2025 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M5/508
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A syringe including a barrel (14), a retractable needle (12) and a plunger rod assembly (22) including inner (30) and outer (24) members with a stopper (46) for expelling fluids from the syringe is disclosed. An activation member (40, 44) associated with the plunger rod permits relative movement of the inner and outer members when activated. The stopper is configured to compress a sufficient amount when advanced distally in the barrel to cause the activation element to engage and cause retraction of the needle within the syringe.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.