Surgeon's Gigli saw and method
US4709699A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 6, 1986 |
| Grant date | Dec 1, 1987 |
| Priority date | — |
| Expiry date | Aug 6, 2006 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD07B2201/2019
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A Gigli saw used by a surgeon to cut bones is constructed of a plurality of round wires which have been deformed in a coining stand so that they form one polygonal shape which in the preferred embodiment is square. This square strand is then twisted along its own axis in a given direction of lay. It is then heat-treated for stress relief and a plurality, such as three, of such strands are twisted together to form a cable. This results in a Gigli saw blade with many cutting edges formed at the edges of the polygon as each such edge is presented at the periphery of the cable. Preferably, the strands have a different number of twists from that of the cable, and are twisted in the opposite direction so that the cutting edges lie at about 5 to 15 degrees relative to the longitudinal axis of the cable. The foregoing abstract is merely a resume of one general application, is not a complete discussion of all principles of operation or applications, and is not to be construed as a limitation on the scope of the claimed subject matter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.