Universal seal for trocar assembly
US5350364A · kind A · utility
274Cited by
14References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 4, 1993 |
| Grant date | Sep 27, 1994 |
| Priority date | — |
| Expiry date | Jan 4, 2013 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2039/0686
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Trocar assembly devices are disclosed that include an improved seal assembly that accommodates instruments having a wide range of diameters. The seal assembly includes a universal seal member that is generally of hourglass shape defining converging and diverging side walls that form a constricted center bore portion therebetween. Various alternative means are provided to either increase or decrease the inner diameter of the center bore portion of the seal member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.