Constant width, adjustable grip, staple apparatus and method
US5715987A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 2, 1996 |
| Grant date | Feb 10, 1998 |
| Priority date | — |
| Expiry date | May 2, 2016 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B17/0644
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A staple and stapler for injecting the staple in a manner so that the staple maintains a near constant width upon penetration of material to be joined and during staple closure/forming such that material perturbation and staple to staple spacing may be minimized. The staple has a rectilinear bridge part from which depend oppositely positioned side parts and from the side parts a pair of straight legs. In a preferred embodiment, the oppositely positioned side parts consist of a proximal arcuate section attached to the bridge part and an oppositely directed distal arcuate section attached to the legs. The legs may have sharpened points. Also disclosed is a stapler adapted to force the oppositely directed distal arcuate sections outward, in one embodiment, thereby forcing a reaction of the legs of the staple to face each other in linear alignment and form a closed staple. The unpreloaded fully-formed staple may be deformed in situ by means of a preload part on a cam slide so as to create a U-shaped central portion for the compression of captured material. Alternatively, a preformed staple with the U-shaped central portion may also be used.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.