Pneumoperitoneum needle
US5300084A · kind A · utility
66Cited by
14References
28Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 23, 1992 |
| Grant date | Apr 5, 1994 |
| Priority date | — |
| Expiry date | Nov 23, 2012 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M5/3145
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A pneumoperitoneum needle comprises a lumen defining a passageway through which pneumoperitoneum gases may pass to the peritoneal cavity, a handle mechanism attached to a proximal end portion of the lumen and a filtration unit housed within the handle mechanism for filtering the pneumoperitoneum gases to be passed through the lumen. The filtration unit preferably includes a hydrophobic filter fabricated from a polytetrafluoroethylene material having a pore size ranging in value from about 0.2 to 0.5 microns. In an alternative embodiment, the filtration unit is incorporated within the handle mechanism of a Veress-type needle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.