Tissue gripping device
US5226890A · kind A · utility
270Cited by
29References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 13, 1991 |
| Grant date | Jul 13, 1993 |
| Priority date | — |
| Expiry date | Nov 13, 2011 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B17/34
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An apparatus for maintaining a positional relationship between a trocar cannula and body tissue into which the cannula is inserted includes a tissue engaging member having a conical outer surface with a thread helically disposed thereon. A guide tube is insertable into a bore in the tissue engaging member, the guide tube having a camming surface. A collet with flexible projections is engageable with the guide tube. When the collet is tightened onto the guide tube the flexible projections bend inward to frictionally engage and hold a trocar cannula inserted through the axial bore of the apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.