Surgical stapler
US4991763A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 23, 1988 |
| Grant date | Feb 12, 1991 |
| Priority date | — |
| Expiry date | May 23, 2008 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B17/0684
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A surgical stapler device of the so-called pistol grip type includes a stack of staples loaded into a lower cartridge in an orientation similar to a conventional paper stapler. A former rotates and turns a leading staple 90.degree. or normal to its prior orientation in the stack of staples as the former slides between a start position and a first intermediate forward position. The former is further displaced to a second intermediate forward position wherein the staple is moved in its perpendicular orientation within the device to the forming position which in turn moves a lower anvil. The former is further displaceable to a third intermediate forward position wherein the staple is formed around a staple forming surface of the lower anvil. The former moves to the final forward position wherein the former cams the lower anvil downwardly separating the formed staple from the staple forming surface of the lower anvil and an anti-bow button of the former contacts the cross-arm of the leading staple and pushes the cross-arm of the leading staple into abutting engagement with a downwardly depending lip of an upper anvil to set the staple. After the staple has been set, the lower anvil and…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.