Needle tip cover
US5171229A · kind A · utility
Inventors
Key dates
| Filing date | Apr 15, 1991 |
| Grant date | Dec 15, 1992 |
| Priority date | — |
| Expiry date | Apr 15, 2011 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M5/3216
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A small needle tip cover is provided which is capable of rendering a used disposable needle safe from accidental punctures. The needle tip cover can take the form of a small rectangular piece of sheet metal that is bent back upon itself. The bend is shaped to provide a spring means which is operable to force the opposing sides of the cover together. The inner surfce of each side includes a plurality of serrated burrs which contact the shaft of a used needle and prevent the tip thereof from escaping. The needle tip cover is kept open by a collapsible column. Until the introduction of a used needle tip therebetween, the column is subject to failure from any slight transverse force, such as that provided by the shaft of the needle pressing there against.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.