Single use syringe and plunger rod locking device therefor
US6790197B2 · kind B2 · utility
61Cited by
24References
36Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 25, 2002 |
| Grant date | Sep 14, 2004 |
| Priority date | — |
| Expiry date | Mar 6, 2023 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2005/5033
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A single use syringe and a plunger rod locking device for such a syringe are provided. The locking device and plunger rod include features that cause the plunger rod to be locked with respect to the syringe barrel upon completion of an injection stroke. A cutting member is provided at the distal end of the locking device. The cutting member will penetrate, and thereby disable the stopper affixed to the plunger rod in an attempt to retract the plunger rod following the injection stroke. The locking device includes barbs for engaging the syringe barrel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.