Method and inflatable chamber apparatus for separating layers of tissue
US5728119A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 13, 1995 |
| Grant date | Mar 17, 1998 |
| Priority date | — |
| Expiry date | Oct 13, 2015 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2090/306
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An apparatus for tissue dissection and instrument anchoring, including a dissection balloon having a viewing window (preferably a rigid, transparent window) at its distal end, or including an anchoring or dissection balloon having nonuniform elasticity selected to achieve desired inflated shape and pressure characteristics, and methods for using such apparatus. The window, which can be a lens, is transparent and either rigid or non-rigid but sufficiently strong to retain a desired optical shape while being pushed against tissue layers by a rigid instrument deployed within the balloon. In preferred embodiments, the balloon is a long-necked dissection balloon deployed through a cannula. In other embodiments, the invention is a dissection balloon assembly including a long-necked dissection balloon having a viewing window at its distal end, and a housing to which the dissection balloon's mouth is attached. In use, the distal end of a long-necked dissection balloon is inserted between tissue layers and inflated to dissect the tissue layers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.