Manually operated reusable injection apparatus
US4664653A · kind A · utility
Inventors
Key dates
| Filing date | Feb 24, 1986 |
| Grant date | May 12, 1987 |
| Priority date | — |
| Expiry date | Feb 24, 2006 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2005/2407
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
One step manually activated injection apparatus capable of injecting multiple pre-measured doses of liquid medicaments without visibility of needle. It is composed of cylindrical housing unit with small aperture at bottom and removeable manual plunger unit at the top, and within housing unit there is a syringe unit composed of a piston, ampule with pre-measured liquid medicament, needle covered with sterile sheath and clip apparatus attached onto the ampule. The injection apparatus is placed in ready position by contacting the bottom of housing unit against a skin surface. One forward manual push on manual plunger unit performs two distinct functions. First, the manual plunger unit engages the clip apparatus attached to syringe ampule, permitting forward movement of syringe unit within housing unit, allowing needle to pierce sheath and pass externally through aperture of housing unit without visibility into the skin. Secondly, a continuous forward push on manual plunger unit allows clip apparatus to move into reduced diameter transitions in housing unit, forcing clips internally to contact onto ampule, permitting manual plunger unit to disengage from clip apparatus and move forward…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.