Snare instrument with snare structure formed from a tube section
US10478203B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 10, 2015 |
| Grant date | Nov 19, 2019 |
| Priority date | — |
| Expiry date | Mar 10, 2035 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2090/3954
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A snare instrument has a snare structure which is formed in one piece from a tube section, by the latter being slit and bent open, and which has a proximal base portion and, extending axially forward from the latter, a distal snaring portion, and which is movable between a snaring position, in which it is moved forward out of an enclosure with the snaring portion folded open, and a securing position, in which it is moved back at least partially into the enclosure with the snaring portion folded in and providing a securing action. The snaring portion, in the folded-open state, has a cup shape with a distal snare opening. For this purpose, a distal end area of the tube section is provided with open axial slits of suitable length introduced from the direction of the distal end of the tube section, and, lying between these, with associated closed axial slits which terminate at a distance in front of the distal end of the tube section and are of greater length than the open axial slits. By way of the open and closed axial slits, wire sections are formed from the tube section and, when the tube section is bent open, the wire sections form circumferential portions of the snare opening.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.