Safety trocar
US7169159B2 · kind B2 · utility
50Cited by
65References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 23, 2002 |
| Grant date | Jan 30, 2007 |
| Priority date | — |
| Expiry date | Sep 29, 2024 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2090/08021
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A safety trocar is provided in which the cannula is reciprocally mounted to the cannula housing and reciprocates into the cannula housing when a proximally directed force is applied thereto. The piercing tip is maintained in the exposed position by a latching mechanism associated with the obturator shaft, and is automatically withdrawn into the cannula under the force of a spring when the proximal force is removed from the cannula, the cannula thus advancing distally and releasing the latching mechanism. Penetration force is maintained at a minimum, and safe and efficacious trocar entry is facilitated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.