Rotary hydraulic pump actuated multi-stroke surgical instrument
US7246734B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 5, 2005 |
| Grant date | Jul 24, 2007 |
| Priority date | — |
| Expiry date | Jan 11, 2026 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/00539
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A surgical instrument (e.g., endocutter, grasper, cutter, staplers, clip applier, access device, drug/gene therapy delivery device, and energy device using ultrasound, RF, laser, etc.) may benefit from having a plurality of hydraulically actuated subsystems (e.g., severing, stapling, articulation, locking/unlocking, lockout enabling/disabling, grasping, etc.) supplied with hydraulic power from a trigger actuated rotary pump (e.g., lobe pump, rotary gear pump, internal rotating gear pump, flexible vane rotor pump, rotary vane pump). Thereby, an available amount of mechanical advantage available at a firing trigger may be optimally distributed to various end effector components, perhaps sequenced by an electroactive polymer or piezoelelectrically actuated function switch block.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.