Electrical surgical instrument with optimized power supply and drive
First Claim
1. A surgical instrument, comprising:
- a surgical end effector having at least one actuation assembly to effect a surgical procedure when actuated;
an electric motor having a rated operating voltage and being operationally connected to said end effector to operate said at least one actuation assembly; and
a power supply electrically connected to said motor;
a switch having a selectable off state and a selectable on state, said selectable on state electrically coupling said power supply to said motor to selectively power said motor, said switch having a current-carrying rating selected to actuate said at least one actuation assembly at least 1 and less than 16 times during a clinical life of at least one of said end effector, said motor, and said power supply, said power supply;
having at least one battery cell with a critical current rate;
when activated to power said motor and actuate said at least one actuation assembly, having a current discharge capacity selected to purposely operate said at least one battery cell at a super-critical current rate during a non-zero super-critical pulse discharge period lasting less than approximately 16 seconds; and
having a voltage discharge capacity selected to purposely operate said motor above said rated operating voltage during said super-critical pulse discharge period.
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Accused Products
Abstract
A surgical instrument includes an end effector having an actuation assembly to effect a surgical procedure when actuated. An electric motor has a rated operating voltage and is operationally connected to the end effector to operate the actuation assembly. A power supply is electrically connected to the motor and selectively powers the motor to actuate the actuation assembly at least 1 and less than 16 times during a clinical life of at least one of the end effector, the motor, or the power supply. The power supply has a battery cell with a critical current rate. When activated to power the motor and actuate the actuation assembly, the power supply operates the battery cell at a super-critical current rate during a non-zero super-critical pulse discharge period lasting less than approximately 16 seconds. The power supply operates the motor above the rated operating voltage during the super-critical pulse discharge period.
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Citations
57 Claims
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1. A surgical instrument, comprising:
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a surgical end effector having at least one actuation assembly to effect a surgical procedure when actuated; an electric motor having a rated operating voltage and being operationally connected to said end effector to operate said at least one actuation assembly; and a power supply electrically connected to said motor; a switch having a selectable off state and a selectable on state, said selectable on state electrically coupling said power supply to said motor to selectively power said motor, said switch having a current-carrying rating selected to actuate said at least one actuation assembly at least 1 and less than 16 times during a clinical life of at least one of said end effector, said motor, and said power supply, said power supply; having at least one battery cell with a critical current rate; when activated to power said motor and actuate said at least one actuation assembly, having a current discharge capacity selected to purposely operate said at least one battery cell at a super-critical current rate during a non-zero super-critical pulse discharge period lasting less than approximately 16 seconds; and having a voltage discharge capacity selected to purposely operate said motor above said rated operating voltage during said super-critical pulse discharge period. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40)
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41. A surgical instrument, comprising:
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a surgical end effector having at least one actuation assembly to effect a surgical procedure when actuated; an electric motor having a rated operating voltage and being operationally connected to said end effector to operate said at least one actuation assembly; and a power supply electrically connected to said motor; a switch having a selectable off state and a selectable on state, said selectable on state electrically coupling said power supply to said motor to selectively power said motor, said switch having a current-carrying rating selected to actuate said at least one actuation assembly, said power supply; having at least one battery cell with manufacturer specifications and a useful life; when activated to power said motor and actuate said at least one actuation assembly, having a current discharge capacity selected to purposely operate said at least one battery cell at a super-critical current rate during a non-zero super-critical pulse discharge period outside said manufacturer specifications to accelerate reduction of said useful life with each use; and having a voltage discharge capacity selected to purposely operate said motor above said rated operating voltage during said super-critical pulse discharge period. - View Dependent Claims (42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57)
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Specification