Rotary hydraulic pump actuated multi-stroke surgical instrument
First Claim
1. A surgical instrument, comprising:
- an elongate implement portion;
a first hydraulic actuator positioned in the elongate implement portion;
a handle attached to the elongate implement portion, comprising;
a hand actuator,a reservoir, anda rotary pump contained in the handle, operated by the hand actuator, and in fluid communication between the first hydraulic actuator and the reservoir to effect fluid transfer.
1 Assignment
0 Petitions
Accused Products
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.
2478 Citations
20 Claims
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1. A surgical instrument, comprising:
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an elongate implement portion; a first hydraulic actuator positioned in the elongate implement portion; a handle attached to the elongate implement portion, comprising; a hand actuator, a reservoir, and a rotary pump contained in the handle, operated by the hand actuator, and in fluid communication between the first hydraulic actuator and the reservoir to effect fluid transfer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A surgical instrument, comprising:
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an elongate implement portion; a plurality of hydraulic actuators positioned in the elongate implement portion; and a handle attached to the elongate implement portion, comprising; an actuator, a reservoir, a rotary pump contained in the handle, operated by the actuator, and in fluid communication between the first hydraulic actuator and the reservoir to effect fluid transfer; and a fluid control system comprising a hydraulic switching apparatus and a plurality of hydraulic conduits communicating between each of the plurality of the hydraulic actuator and the hydraulic switching apparatus.
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20. A surgical instrument, comprising:
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an elongate implement portion; a plurality of hydraulic actuators positioned in the elongate implement portion; a plurality of hydraulic conduits attached at one end respectively to a selected one of the plurality of hydraulic actuators and communicating to a proximal end of the elongate implement portion; and a handle attached to the elongate implement portion, comprising; a hydraulic switching apparatus in communication with each of the plurality of hydraulic conduits, a trigger, a reservoir, a rotary pump contained in the handle, operated by the trigger, and in fluid communication between the hydraulic switching apparatus and the reservoir to effect fluid transfer; and control circuitry operatively configured to selectively control the hydraulic switching apparatus.
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Specification