Protractable and retractable hypodermic needle syringe
US5762634A · kind A · utility
24Cited by
7References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 14, 1995 |
| Grant date | Jun 9, 1998 |
| Priority date | — |
| Expiry date | Aug 14, 2015 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/583
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A protractable and retractable hypodermic needle syringe device having a syringe barrel, a cylindrical plunger with a cam sleeve, a cam drive shaft, a needle carrier with a cam follower tab, and a hypodermic needle. The hypodermic needle can be moved by the cam system from a retracted position within the plunger to a protracted, operable position. The needle can be detached in the operable position, and reattached after use, onto the needle carrier. The plunger has a resealable membrane which is traversed by the needle and can be selectively prevented from longitudinal movement within the syringe barrel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.