Safety trocar
US5314417A · kind A · utility
330Cited by
14References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 22, 1992 |
| Grant date | May 24, 1994 |
| Priority date | — |
| Expiry date | Dec 22, 2012 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B17/3417
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A safety trocar is provided which includes a spring-loaded shield that shields the cutting tip of the obturator after the obturator penetrates tissue. The distal end of the shield is conical in profile and contains a slot which conforms to the geometry of the cutting tip. The obturator tip contains a knife edge blade which extends the length of the cannula inner diameter. Ideally, the knife is made of an amorphous metal, and may be serrated at its edge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.