Surgical stapler with anvil seating detection
First Claim
1. A surgical instrument comprising:
- (a) a body assembly, wherein the body assembly comprises a proximal end and a distal end;
(b) a shaft assembly, wherein the shaft assembly extends distally from the distal end of the body assembly, wherein the shaft assembly comprises a proximal end and a distal end;
(c) a stapling assembly, wherein the stapling assembly is disposed at the distal end of the shaft assembly, wherein the stapling assembly is operable to drive a plurality of staples into tissue, wherein the stapling assembly comprises;
(i) a trocar, wherein the trocar is configured to selectively move between a distal position to a proximal position within the shaft assembly, and(ii) an anvil, wherein the anvil is selectively coupleable with the trocar, wherein the anvil is configured to move between the distal position and the proximal position when coupled with the trocar;
(d) a firing assembly, wherein the firing assembly is coupled with the stapling assembly, wherein the firing assembly includes a motor configured to drive movement of the stapling assembly; and
(e) a lockout assembly, wherein the lockout assembly comprises;
(i) an electrical switch, and(ii) a moveable member, wherein a proximal end of the anvil is configured to directly contact and move the moveable member from a first position to a second position, wherein the moveable member in the first position is configured to provide the electrical switch in a first state, wherein the moveable member in the second position is configured to provide the electrical switch in a second state,wherein the electrical switch is configured to permit activation of the motor when the anvil is coupled with the trocar, and wherein the electrical switch is configured to prevent activation of the motor when the anvil is not coupled with the trocar.
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Accused Products
Abstract
A surgical circular stapler has a handle assembly, a shaft, a stapling assembly, and a firing assembly. The shaft extends distally from the handle assembly. The stapling assembly is secured to a distal end of the shaft. Longitudinal translation of the firing assembly causes the stapling assembly to drive a plurality of staples in a circular array to secure two lumens of tissue together. The stapling assembly may further drive a blade to sever any excess tissue interior of the circular array of staples. The stapler further includes a lockout assembly configured to control firing of the stapling assembly. The lockout assembly may include one or more switches, the actuation of which is configured to prevent or permit firing of the stapling assembly. The lockout assembly may additionally or alternatively include one or more mechanical lockout features configured to control firing of the stapling assembly.
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Citations
20 Claims
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1. A surgical instrument comprising:
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(a) a body assembly, wherein the body assembly comprises a proximal end and a distal end; (b) a shaft assembly, wherein the shaft assembly extends distally from the distal end of the body assembly, wherein the shaft assembly comprises a proximal end and a distal end; (c) a stapling assembly, wherein the stapling assembly is disposed at the distal end of the shaft assembly, wherein the stapling assembly is operable to drive a plurality of staples into tissue, wherein the stapling assembly comprises; (i) a trocar, wherein the trocar is configured to selectively move between a distal position to a proximal position within the shaft assembly, and (ii) an anvil, wherein the anvil is selectively coupleable with the trocar, wherein the anvil is configured to move between the distal position and the proximal position when coupled with the trocar; (d) a firing assembly, wherein the firing assembly is coupled with the stapling assembly, wherein the firing assembly includes a motor configured to drive movement of the stapling assembly; and (e) a lockout assembly, wherein the lockout assembly comprises; (i) an electrical switch, and (ii) a moveable member, wherein a proximal end of the anvil is configured to directly contact and move the moveable member from a first position to a second position, wherein the moveable member in the first position is configured to provide the electrical switch in a first state, wherein the moveable member in the second position is configured to provide the electrical switch in a second state, wherein the electrical switch is configured to permit activation of the motor when the anvil is coupled with the trocar, and wherein the electrical switch is configured to prevent activation of the motor when the anvil is not coupled with the trocar. - 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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(a) a body assembly, wherein the body assembly comprises a proximal end and a distal end; (b) a shaft assembly defining a central axis, wherein the shaft assembly extends distally from the distal end of the body assembly, wherein the shaft assembly comprises a proximal end and a distal end; (c) a stapling assembly, wherein the stapling assembly is disposed at the distal end of the shaft assembly, wherein the stapling assembly is operable to drive a plurality of staples into tissue, wherein the stapling assembly comprises; (i) a trocar, wherein the trocar is configured to selectively move along the central axis between a distal position to a proximal position within the shaft assembly, and (ii) an anvil, wherein the anvil is selectively coupleable with the trocar, wherein the anvil is configured to move along the central axis between the distal position and the proximal position when coupled with the trocar; (d) a firing assembly, wherein the firing assembly is coupled with the stapling assembly, wherein the firing assembly includes a motor configured to drive movement of the stapling assembly; and (e) a lockout assembly, wherein the lockout assembly comprises; (i) an electrical switch, and (ii) a moveable member, wherein the movable member is moveable transversely relative to the central axis to actuate the electrical switch in response to proximal movement of the anvil when the anvil is coupled with the trocar, wherein the electrical switch is configured to permit activation of the motor when the anvil is coupled with the trocar, and wherein the electrical switch is configured to prevent activation of the motor when the anvil is not coupled with the trocar.
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20. A surgical instrument comprising:
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(a) a body assembly, wherein the body assembly comprises a proximal end and a distal end; (b) a shaft assembly, wherein the shaft assembly extends distally from the distal end of the body assembly, wherein the shaft assembly comprises a proximal end and a distal end; (c) a stapling assembly, wherein the stapling assembly is disposed at the distal end of the shaft assembly, wherein the stapling assembly is operable to drive a plurality of staples into tissue, wherein the stapling assembly comprises; (i) a trocar, wherein the trocar is configured to selectively move between a distal position to a proximal position within the shaft assembly, and (ii) an anvil, wherein the anvil is selectively coupleable with the trocar, wherein the anvil is configured to move between the distal position and the proximal position when coupled with the trocar; (d) a firing assembly, wherein the firing assembly is coupled with the stapling assembly, wherein the firing assembly includes a motor configured to drive movement of the stapling assembly; and (e) a moveable member, wherein the moveable member is configured to rotate relative to the trocar between a first rotational position and a second rotational position in response to longitudinal movement of the anvil relative to the shaft assembly, wherein the moveable member is configured to permit activation of the motor when the moveable member is in the first rotational position, and wherein the moveable member is configured to prevent activation of the motor when the moveable member is in the second rotational position.
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Specification