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, 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.
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 piezoelectrically actuated function switch block.
208 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