Fragmentable anastomosis ring applier
US5376098A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 9, 1992 |
| Grant date | Dec 27, 1994 |
| Priority date | — |
| Expiry date | Oct 9, 2012 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/22072
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A novel surgical instrument suitable for insertion and assembly of multi-ring compression devices for circular anastomosis of tubular tissue sections including a body having means to support and align the rings, means for clamping the rings around the free ends of the tissue sections, means for coring away excess clamped tissue and the centers of the rings, separate means for releasing the clamped rings from the instrument and dwell means to delay releasing the rings until after the coring operation is complete. The dwell means consists of an external cap containing separate and coaxial elements for the coring means and the releasing means which are provided with a series of recesses and a plurality of shifter keys to separate the operation of coring from the separate operation of releasing the assembled multi-ring compression device from the instrument. The instrument may additionally include means for detaching a portion of the support means to facilitate installation and alignment, and a safety to ensure safe operation and interchangeable knife blades.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.