Needle guard assembly for syringe
US5540667A · kind A · utility
30Cited by
19References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 6, 1995 |
| Grant date | Jul 30, 1996 |
| Priority date | — |
| Expiry date | Feb 6, 2015 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2039/042
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A needle guard assembly for a prefilled emergency syringe includes a cylindrical sidewall which extends coaxially with the syringe needle. The sidewall is joined to the syringe housing by spin welding or sonic welding an annular fusible portion that extends axially rearward from an annular flange on the base of the sidewall to contact the front wall of the housing. The sidewall is joined to the housing so that an annular clearance space for the hood is maintained between the hub and the sidewall guard.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.