Laparoscopic grasper with force-limiting grasping mechanism
US11596428B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 11, 2019 |
| Grant date | Mar 7, 2023 |
| Priority date | — |
| Expiry date | Apr 7, 2040 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2090/035
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A surgical instrument is provided having an actuator mechanism with an integrated extension element. The surgical instrument comprises a handle assembly, an elongate shaft, and an end effector. The end effector comprises a jaw assembly having atraumatic pads to reduce force on grasped tissue. An actuator is movable within the elongate shaft to actuate jaws of the jaw assembly responsive to a movable handle of the handle assembly. The actuator can have an integrated extension element that allows the actuator to translate within the elongate shaft upon application of a relatively low force and translate and extend upon application of a relatively higher force to the actuator to limit the force applied by the jaw assembly. The actuator also utilizes forces stored with the integrated extension element to provide a dynamic amount of force used to grasp the tissue when the tissue volume decreases while in the jaws.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.