Method, instrument and anastomotic fitting for use when performing an end-to-side anastomosis
US5797934A · kind A · utility
Assignees
Inventor
Key dates
| Filing date | Aug 23, 1996 |
| Grant date | Aug 25, 1998 |
| Priority date | — |
| Expiry date | Aug 23, 2016 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/306
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An end-to-side anastomosis between a first vessel (27) and a second vessel (51) is carried out using an anastomosis instrument comprising a tube (20) in which the first vessel (27) is inserted and everted at the end of the tube (20) to form a collar (28), a springy anastomotic fitting (30) with outwardly directed spikes (32) having previously been placed under elastic bending in a circumferential recess (22). The tube (20) is inserted in a previously made incision in the second vessel (51), a guide member (35) ensuring that the wall region (53) around the incision contacts the everted collar (28). Then, an ejector (23) is operated to liberate the fitting (30) from the recess (22), releasing the fitting to expand quickly, so the spikes (32) penetrate the collar (28) and the wall region (53). Finally, the tube (20) and the ejector (23) are removed, and so is the guide member (35) having previously been made to collapse in a manner not shown to allow it to be removed through the first vessel (27).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.