Slidable kit for endoscopic ligation
US5507797A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 15, 1994 |
| Grant date | Apr 16, 1996 |
| Priority date | — |
| Expiry date | Aug 15, 2014 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/12018
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A slidable kit for endoscopic ligation of gastric and esophageal varices comprises an endoscope-inserting cylinder and a ligating device coaxially and integrally secured to the endoscope-inserting cylinder, where the ligating device is in such a structure that a slide cylinder having an annular rib on the outer periphery at the rearward end is inserted into an outer cylinder having an annular rib on the inner periphery at the forward end; an inner cylinder is inserted into the slide cylinder; the outer cylinder and the inner cylinder are integrated together at the rearward ends and firmly secured to the forward end of the endoscope-inserting cylinder; an elastic O ring is mounted on the outer periphery at the forward end of the inner cylinder; a seal ring is provided at the rearward end of the slide cylinder, thereby keeping an annular space between the outer cylinder, the inner cylinder and the slide cylinder hermetic; the slide cylinder is slidable forwards by a liquid introduced into the annular space through the tube to push and release the elastic O ring, thereby ligating a varix sucked in the inner cylinder, can overcome problems of the conventional kit for endoscopic ligatio…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.