Injection device
US5591136A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 27, 1995 |
| Grant date | Jan 7, 1997 |
| Priority date | — |
| Expiry date | Oct 27, 2015 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/581
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A safety injection device, such as a hypodermic needle, for dispensing liquid from a cartridge in quantities determined by the length of a plunger which may be selectively adjusted in one position only of the plunger. The plunger comprises first and second threadedly connected sections cooperating with a connector which may be selectively activated when the plunger is moved into the one position to permit rotation of one plunger section relative to the other. Preferably, the adjustment position of the plunger coincides with its positions assumed in preparation of an injection stroke, with the connector preferably providing for undirectional rotation of the one plunger section.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.