Needle cover
US4091811A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 15, 1976 |
| Grant date | May 30, 1978 |
| Priority date | — |
| Expiry date | Nov 15, 1996 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2005/312
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A needle cover for a blood collection needle or the like comprises a first sleeve positioned about a pointed hypodermic needle. The first sleeve is removably carried by a hub, which also carries the needle. In accordance with this invention an inner sleeve is provided, positioned within the first sleeve and about the point of the needle. The inner sleeve is free of mechanical attachment to the first sleeve so that, upon rotation of the outer sleeve for its removal from the hub, the inner sleeve does not rotate with the first sleeve. Accordingly, the danger of the pointed needle scouring out and retaining bits of plastic from the sleeve is eliminated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.