Surgical knife with controllably extendable blade and gauge therefor
US4499898A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 23, 1982 |
| Grant date | Feb 19, 1985 |
| Priority date | — |
| Expiry date | Aug 23, 2002 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/32113
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Surgical knife with controllably extendable blade, the blade retained by a blade holder extending through an axial opening in the knife body and connected with a member threadedly retained within the knife body for axial adjustment and also connected to an adjustment knob at the rear end of the knife. Another feature of the knife is a foot configuration which facilitates precise use and control of the knife. Preferably the invention also comprises the knife, as disclosed, in combination with a gauge for visually inspecting blade projection, the gauge indicator consisting of a pair of eccentric circles or portions thereof, the blade projection being measured by comparison with the radial distance between the two circles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.