Surgical knife
US7144403B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 29, 2003 |
| Grant date | Dec 5, 2006 |
| Priority date | — |
| Expiry date | Jun 27, 2025 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/32116
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A knife having a blade tip configuration that reduces incisional force by providing a more efficient distribution of tissue piercing and cutting forces over the cutting edges. The distal tip of the blade has a profile in plan view in the region of approximately 150 microns from the distal most point of the tip that may be described by the equation w=adn, where w is the distance from the blade's longitudinal axis to the blade's cutting edge, a is a constant of proportionality not greater than 0.5 and d is the distance along the blade's longitudinal axis from the extreme distal point of the blade tip. The extreme distal point of the tip has a slightly rounded, rather than pointy, profile, with a tip radius of approximately 40 microns or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.