Tissue holding device and method
US6224608A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 3, 1993 |
| Grant date | May 1, 2001 |
| Priority date | — |
| Expiry date | Jun 3, 2013 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/349
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A tissue gripping thread configuration for securely positioning an elongated medical instrument relative to body tissue. The tissue gripping thread includes curved distal and proximal foot sections connected to a thread base, a curved distal thread surface extending from the distal foot section to a thread apex, and a proximal thread wall substantially perpendicular to the base surface extending from the proximal curved foot section to the thread apex. In the preferred embodiment the flank angle of the distal thread surface is substantially greater than the flank angle of the proximal thread wall. The preferred thread configuration reduces trauma to tissue during insertion and removal of an associated medical instrument while ensuring secure positioning of the instrument relative to tissue. Preferred thread dimensions and radii, as well as embodiments for associating the preferred thread configuration with a trocar device are disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.