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US 10,517,602 B2Granted
Surgical stapler with reversible polarity
AssigneeEthicon, Inc.
InventorsBrian F. DiNardo, Rodney V. Clingaman, Charles J. Scheib, Frederick E. Shelton, IV, Richard F. Schwemberger, William R. Stager
Life of this patent
Estimating the term…
Abstract
A method for resetting a stapling apparatus includes providing an apparatus with a cam member in a fired position. A circuit of the apparatus is then changed from a first polarity state to a second polarity state. A motor of the apparatus is then activated to rotate the cam member from a fired position back to a home position while the circuit is in the second polarity state.
Claims20
A method for resetting an apparatus configured for stapling tissue, the apparatus comprising:
- (a) a stapling head assembly, wherein the stapling head assembly comprises:
- (i) an annularly arranged array of staples, and
- (ii) a knife with an annular cutting edge that is configured to cut tissue;
- (b) a shaft assembly coupled to the stapling head assembly;
- (c) a body coupled to the shaft assembly, wherein the body comprises:
- (i) a motor, and
- (ii) a cam member configured to rotate in response to activation of the motor, wherein the cam member is rotatable in a first direction from a home position to a tired position to actuate the stapling head assembly to thereby drive the staples and the knife through tissue;
- and
- (d) a circuit in electrical communication with the motor;
- wherein the method comprises:
- (a) providing the cam member in the fired position;
- (b) changing the polarity of the circuit;
- and
- (c) after changing the polarity of the circuit, actuating a user input feature to thereby activate the motor such that the cam member rotates from the fired position to the home position.
11 more elements
A method for resetting an apparatus configured for stapling tissue, the apparatus comprising:
- (a) a stapling head assembly, wherein the stapling head assembly comprises:
- (i) an annularly arranged array of staples, and
- (ii) a knife with an annular cutting edge that is configured to cut tissue;
- (b) a shaft assembly coupled to the stapling head assembly;
- and
- (c) a body coupled to the shaft assembly, wherein the body comprises:
- (i) a socket,
- (ii) a motor, and
- (iii) a cam member configured to rotate in response to activation of the motor, wherein the cam member is rotatable in a first direction from a home position to a fired position to actuate the stapling head assembly to thereby drive the staples and the knife through tissue, wherein the cam member is further rotatable in the first direction from the fired position to the home position;
- wherein the method comprises:
- (a) providing the cam member in the fired position, wherein a first battery having a first polarity was positioned in the socket and was used to activate the motor to thereby drive the cam member in the first direction from the home position to the fired position;
- (b) inserting a second battery in the socket, wherein the second battery has a second polarity opposite to the first polarity;
- and
- (c) activating the motor with the second battery to thereby drive the cam member in the first direction from the fired position to the home position.
11 more elements
A surgical kit, the surgical kit comprising:
- (a) a stapling instrument, the stapling instrument comprising:
- (i) a stapling head assembly, wherein the stapling head assembly comprises:
- (A) an annularly arranged array of staples, and
- (B) a knife with an annular cutting edge that is configured to cut tissue,
- (ii) a shaft assembly coupled to the stapling head assembly,
- (iii) a body coupled to the shaft assembly, wherein the body comprises:
- (A) a motor, and
- (B) a cam member configured to rotate in response to activation of the motor, wherein the cam member is rotatable in a first direction from a home position to a fired position to actuate the stapling head assembly to thereby drive the staples and the knife through tissue, wherein the cam member is further rotatable in the first direction from the fired position to the home position, and
- (iv) a circuit in electrical communication with the motor, wherein the circuit is configured to transition between a first polarity state and a second polarity state, wherein the motor is configured to drive the cam member from the home position to the fired position when the circuit is in the first polarity state, wherein the motor is further configured to drive the cam member from the fired position to the home position when the circuit is in the second polarity state;
- (b) a first battery pack configured to activate the motor when the circuit is in the first polarity state, wherein the first battery pack has a first polarity associated with the first polarity state of the circuit;
- and
- (c) a second battery pack configured to activate the motor when the circuit is in the second polarity state, wherein the second battery pack has a second polarity associated with the second polarity state of the circuit.
9 more elements
Dependencies are inferred from the claim text.