Modified disposable injector device
US6224567A · kind A · utility
33Cited by
7References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 14, 2000 |
| Grant date | May 1, 2001 |
| Priority date | — |
| Expiry date | Aug 14, 2020 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2005/31508
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present invention is a modified single use hand-operated injector device consisting of a plunger, a base, a snap means for resisting plunger movement and an injection means for injecting parenteral medication through a skin surface of a patient. The improvement comprises a check valve seated in a cannula and a widened receptacle area within a high pressure barrel through which the cannula passes. When the check-valve plug expels upon increase in pressure, into the widened receptacle area the parenteral medication efficiently flows around the plug and into the subcutaneous tissue of the patient.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.