Actuation shaft retention mechanism for surgical stapler
US11771428B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 29, 2021 |
| Grant date | Oct 3, 2023 |
| Priority date | — |
| Expiry date | Nov 17, 2041 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/0046
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A powered handle for a surgical stapler can have a drive system including an electric motor. The powered handle can include a manual return mechanism. The powered handle can also include a retention mechanism to prevent unintentional movement of drivetrain components upon actuation of the manual return mechanism. For example, the retention mechanism can apply a direction-dependent frictional force on an actuation shaft of the handle assembly to prevent unintentional movement of the actuation shaft towards a distal end of the handle assembly. The retention mechanism can include a featherboard-like configuration with a plurality of ribs oriented transversely to the actuation shaft to restrict movement of the actuation shaft in one direction while allowing movement of the shaft in the opposite direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.