Motorized surgical instrument
First Claim
1. A surgical instrument, comprising:
- an end effector;
a firing member configured to move longitudinally within the end effector;
a drive system coupled to the firing member;
an electric motor configured to drive the drive system;
a battery; and
a control circuit coupled to the electric motor, wherein the control circuit comprises a first switching device and a second switching device, and wherein the control circuit is configured to;
deliver a maximum voltage from the battery to the electric motor to apply a first torque to the drive system; and
selectively deliver an increased voltage to the electric motor to apply a second torque to the drive system, wherein the second torque is greater than the first torque, and wherein the increased voltage is greater than the maximum voltage from the battery.
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Accused Products
Abstract
A surgical instrument comprising an end effector, a firing member configured to move longitudinally within the end effector, a drive system coupled to the firing member, an electric motor configured to drive the drive system, a battery, and a control circuit coupled to the electric motor is disclosed. The control circuit comprises a first switching device and a second switching device. The control circuit is configured to deliver a maximum voltage from the battery to the electric motor to apply a first torque to the drive system and selectively deliver an increased voltage to the electric motor to apply a second torque to the drive system. The second torque is greater than the first torque. The increased voltage is greater than the maximum voltage from the battery.
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Citations
20 Claims
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1. A surgical instrument, comprising:
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an end effector; a firing member configured to move longitudinally within the end effector; a drive system coupled to the firing member; an electric motor configured to drive the drive system; a battery; and a control circuit coupled to the electric motor, wherein the control circuit comprises a first switching device and a second switching device, and wherein the control circuit is configured to; deliver a maximum voltage from the battery to the electric motor to apply a first torque to the drive system; and selectively deliver an increased voltage to the electric motor to apply a second torque to the drive system, wherein the second torque is greater than the first torque, and wherein the increased voltage is greater than the maximum voltage from the battery. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A surgical instrument, comprising:
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an end effector; a firing system; an electric motor coupled to the firing system; a battery coupled to the electric motor; a charge accumulator device selectively couplable to the electric motor; and a control circuit coupled to the electric motor, wherein the control circuit comprises a first switching device and a second switching device, and wherein the control circuit is configured to; selectively combine a first maximum potential from the battery with a second potential from the charge accumulator device to establish a third potential which is greater than the first maximum potential from the battery; and apply the third potential to the electric motor to increase an output torque of the electric motor. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A surgical instrument, comprising:
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an end effector; an electric motor; a battery coupled to the electric motor; a capacitor selectively couplable to the electric motor; and means for selectively supplementing a maximum power from the battery to increase an output torque of the electric motor, wherein the means for selectively supplementing comprises a first switching device and a second switching device. - View Dependent Claims (17, 18, 19, 20)
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Specification