Cannula for receiving surgical instruments
US7001397B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 16, 2003 |
| Grant date | Feb 21, 2006 |
| Priority date | — |
| Expiry date | Dec 19, 2023 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/0046
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Methods and cannulae for providing access to a surgical location within a patient are described. A cannula (10) receives surgical instruments (120) for performing a surgical procedure on a body (130). The cannula (10) comprises a tube structure (12) defining a passage (16) through which the surgical instruments (120) are inserted into the body (130). The tube structure (12) has a proximal end (20) and a distal end (62). The tube structure (12) includes an expandable portion (40) for enabling an increase in the cross-sectional area of the passage (16) at the distal end (62). The expandable portion (40) of the tube structure (12), when expanded, has a conical configuration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.