Motorized surgical cutting and fastening instrument
First Claim
1. A surgical instrument, comprising:
- an end effector, comprising;
a cutting instrument; and
;
a removable cartridge;
a shaft connected to the end effector, the shaft comprising a drive train for powering the end effector to cause the cutting instrument to move to cut tissue in the end effector;
a handle connected to the shaft;
an electric DC motor connected to the drive train for powering the drive train; and
a power pack that is insertable in and removable from the handle, wherein the power pack comprises;
a plurality of rechargeable battery cells; and
an electronic control circuit for controlling an output voltage provided by the power pack to the motor based on an input from the surgical instrument indicative of a status of the cartridge after the cartridge is received by the end effector and prior to energizing the motor, wherein;
the electronic control circuit connects a first voltage to the motor when the cartridge has a first status;
the electronic control circuit connects a second voltage to the motor when the cartridge has a second status, wherein the second voltage is less than the first voltage; and
the electronic circuit comprises at least one switch;
for connecting a first set of the plurality of rechargeable battery cells to the electric DC motor to connect the first voltage to the electric DC motor when the cartridge has the first status; and
for connecting a second set of the plurality of rechargeable battery cells to the electric DC motor to connect the second voltage to the electric DC motor when the cartridge has the second status.
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Accused Products
Abstract
A surgical cutting and fastening instrument comprises an end effector, a shaft connected to the end effector, and a handle connected to the shaft. The handle comprises an electric, DC motor connected to a drive train for powering the drive train and a plurality of series-connected DC power source connected to the motor for supplying electrical power to the motor. The handle also comprises a power source selection switch for connecting, when in a first state, all of the DC power sources to the motor, and, when in a second state, a subset of the DC power sources to the motor. Also disclosed are means for actuating a RF electrode in the end effector and means for indicating actuation of the RF electrode.
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Citations
10 Claims
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1. A surgical instrument, comprising:
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an end effector, comprising; a cutting instrument; and
;a removable cartridge; a shaft connected to the end effector, the shaft comprising a drive train for powering the end effector to cause the cutting instrument to move to cut tissue in the end effector; a handle connected to the shaft; an electric DC motor connected to the drive train for powering the drive train; and a power pack that is insertable in and removable from the handle, wherein the power pack comprises; a plurality of rechargeable battery cells; and an electronic control circuit for controlling an output voltage provided by the power pack to the motor based on an input from the surgical instrument indicative of a status of the cartridge after the cartridge is received by the end effector and prior to energizing the motor, wherein; the electronic control circuit connects a first voltage to the motor when the cartridge has a first status; the electronic control circuit connects a second voltage to the motor when the cartridge has a second status, wherein the second voltage is less than the first voltage; and the electronic circuit comprises at least one switch; for connecting a first set of the plurality of rechargeable battery cells to the electric DC motor to connect the first voltage to the electric DC motor when the cartridge has the first status; and for connecting a second set of the plurality of rechargeable battery cells to the electric DC motor to connect the second voltage to the electric DC motor when the cartridge has the second status. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification