Trocar assembly
US5538509A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 31, 1994 |
| Grant date | Jul 23, 1996 |
| Priority date | — |
| Expiry date | Jan 31, 2014 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2090/0811
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A trocar for use in surgical procedures including a cannula for maintaining a sealed working channel in a body wall and an obturator which creates the working channel through the body wall while protecting patients and medical personnel from harm is disclosed. A cannula converter which can be employed with the trocar to enable a surgeon to use surgical instruments having a smaller outer diameter than the inner diameter of the cannula without deflating a body cavity is further disclosed. A site stabilizer which can be used with the trocar to prevent the cannula from being inadvertently withdrawn from the body cavity during a surgical procedure is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.