Multiportal device with linked segmented cannulae and method for percutaneous surgery
US7118577B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 16, 2002 |
| Grant date | Oct 10, 2006 |
| Priority date | — |
| Expiry date | Feb 8, 2024 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/00261
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The device of the invention consists of a plurality of tubular cannulae, consisting of stackable segments, which prior to the surgery, are linked together at their distal ends by flexible elements, such as wires or threads. All the threads, the number of which is one less than the number of the used cannulae, are passed through one of the cannulae and the distal ends of the threads are either attached to the walls of other cannulae, at their distal ends, or pulled back through one of the cannula forming the loop at the distal end and fixed at the proximal end of the cannula. During surgery, the cannulae with their distal ends being linked are inserted into the patient's body through an incision, then the surgeon makes additional incisions, disconnects some segments from selected cannulae, subcutaneously pulls them to the additional incisions, and reconnects previously disconnected segments. The surgery is then performed using the cannulae for guiding various surgical tools. Due to flexible linking of the cannulae at their distal ends, the cannulae can be easily manipulated without disconnection and without a need for use of extraneous X-raying for reorientation of the cannulae.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.