Actuator spring for syringe sheaths
US5308332A · kind A · utility
44Cited by
4References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 21, 1993 |
| Grant date | May 3, 1994 |
| Priority date | — |
| Expiry date | Jan 21, 2013 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M5/31556
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
This invention relates to reciprocable sheaths for hypodermic syringes that have latches to hold the sheaths over the needle of the syringes. A spring is employed to normally move the sheath over the needle and the expansion of the spring is limited to 90.degree. of the free expansion dimension to positively move the sheaths and latches to the fully protected position. Volume numbers and graduations are placed on the exterior of the syringe plumger for greater clarity of reading.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.