Surgical stapler and methods
US4796793A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 10, 1984 |
| Grant date | Jan 10, 1989 |
| Priority date | — |
| Expiry date | May 10, 2004 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B17/0684
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A surgical stapler includes a moving driver and an anvil moving in the same direction as the driver to pick off a staple from a supply, and to transport it to a forming station. The anvil is there stopped, but the driver continues to move forwardly forming the staple about the anvil. The anvil is locked against retraction until the driver is partially retracted in order to facilitate staple ejection. A drive linkage includes a four-bar linkage and a trigger mounted cam drive for dispersing required input forces over the trigger movement and minimizing force variations and maximum input. Modular features and construction provide use and manufacturing advantages. Methods are included.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.