Trocar system having penetration indicator
US5352206A · kind A · utility
50Cited by
17References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 31, 1993 |
| Grant date | Oct 4, 1994 |
| Priority date | — |
| Expiry date | Mar 31, 2013 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/00119
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A trocar system comprises an obturator and a trocar cannula. The obturator includes an elongate shaft having a tapered distal end and a proximal end. At least one port is provided near the distal tip of the tapered distal end and open to an axial lumen within the obturator. A mechanism for producing an audible signal in response to superatmospheric pressure at the port, typically a whistle structure, is provided near the proximal end of the trocar. In this way, when the trocar system is introduced to an insufflated region during laparoscopic surgery, an audible whistle will be provided to alert the treating surgeon.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.