Ultrasonic surgical blade with improved cutting and coagulation features
US6423082B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 31, 2000 |
| Grant date | Jul 23, 2002 |
| Priority date | — |
| Expiry date | Mar 31, 2020 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/320089
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present invention is directed to an ultrasonic surgical blade including a top surface, a bottom surface and a cutting-edge. The cutting-edge is defined by a cutting-surface intermediate the top surface and the bottom surface, and the top surface has a width greater than the width of the bottom surface. The blade may be straight or curved. In one embodiment of the invention, at least a portion of the cutting-surface is substantially parallel to at least a portion of the top surface. In still another embodiment of the invention first and second side-walls intersect the top surface to form first and second cutting-edges that may be sharp or blunt. Alternately, a second cutting-edge may be defined by a second cutting surface intermediate the top and bottom surfaces. Depending on the angle between the intermediate cutting-surface and the top surface, the cutting-edge may be sharp or blunt. In yet another embodiment of the present invention, a central ridge is provided on the bottom surface of the blade to eliminate blade burrowing and improve precision during coagulation. The cutting-edge is optimized to increase cutting speed of the blade while providing desirable hemostasis. The i…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.