Inflatable heart elevation apparatus and method
US5735791A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 14, 1997 |
| Grant date | Apr 7, 1998 |
| Priority date | — |
| Expiry date | May 14, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/00557
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present invention is directed to new and useful methods and apparatus for improving access to the heart during cardiac surgery, while avoiding damage to the phrenic nerves. The present invention comprises a heart elevation apparatus which is soft and substantially cylindrical, with substantially flat anterior and posterior surfaces. Upon inflation, the anterior surface stabilizes the positioning of the heart and prevents the heart from falling off of the apparatus. The flat posterior surface facilitates positioning of the apparatus on the chest wall. An insulation pad on the posterior surface serves to insulate the phrenic nerves from the frigid bathes commonly employed in cardiac surgical procedures, and also protects the nerves from any compressive forces exerted during the surgery. A web member in the interior of the inflatable chamber prevents the inflatable chamber from blowing up into a ball, and instead constrains the anterior and posterior surfaces, thus resulting in flat or concave appearance, depending on the level of inflation in the inflation chamber. Insertion and proper placement of the apparatus in a deflated state is preferably through an incision in the thoraci…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.