Managing tissue treatment
First Claim
1. A surgical system for providing a drive signal to a surgical device for treating tissue, the surgical system comprising:
- a surgical generator, wherein the surgical generator is programmed to;
deliver the drive signal according to a first composite load curve, wherein the first composite load curve defines a first level of power to be delivered to the tissue as a function of at least one measured property of the tissue, and wherein the first composite load curve defines a plurality of pulses to be sequentially applied to the tissue;
receive a first tissue measurement over a period of a pulse of the plurality of pulses of the drive signal indicating a property of the tissue at a first time during the delivery of the pulse of the plurality of pulses of the drive signal;
receive a second tissue measurement over the period of the pulse indicating the property of the tissue at a second time during the delivery of the pulse of the plurality of pulses of the drive signal, wherein the second time is after the first time;
determine, prior to completion of the delivery of the pulse, a difference in the property of the tissue between the first time and the second time based on the first and second tissue measurements;
prior to completion of the first composite load curve, when the difference in the property of the tissue exceeds a difference threshold of the property of the tissue, deliver the drive signal according to a second composite load curve, wherein the second composite load curve defines a second level of power, and wherein the second level of power is greater than the first level of power.
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Accused Products
Abstract
Various embodiments are directed to systems and methods for providing a drive signal to a surgical device for treating tissue. A surgical generator may deliver the drive signal according to a first composite load curve. The surgical generator may receive a first tissue measurement indicating a property of the tissue at a first time during the delivery of the drive signal, receive a second tissue measurement indicating the property of the tissue at a second time during the delivery of the drive signal after the first time, and based on the first and second tissue measurements, determine a difference in the property of the tissue between the first time and the second time. When the difference in the property of the tissue exceeds a difference threshold, the generator may deliver the drive signal according to a second composite load curve that is more aggressive than the first composite load curve.
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Citations
14 Claims
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1. A surgical system for providing a drive signal to a surgical device for treating tissue, the surgical system comprising:
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a surgical generator, wherein the surgical generator is programmed to; deliver the drive signal according to a first composite load curve, wherein the first composite load curve defines a first level of power to be delivered to the tissue as a function of at least one measured property of the tissue, and wherein the first composite load curve defines a plurality of pulses to be sequentially applied to the tissue; receive a first tissue measurement over a period of a pulse of the plurality of pulses of the drive signal indicating a property of the tissue at a first time during the delivery of the pulse of the plurality of pulses of the drive signal; receive a second tissue measurement over the period of the pulse indicating the property of the tissue at a second time during the delivery of the pulse of the plurality of pulses of the drive signal, wherein the second time is after the first time; determine, prior to completion of the delivery of the pulse, a difference in the property of the tissue between the first time and the second time based on the first and second tissue measurements; prior to completion of the first composite load curve, when the difference in the property of the tissue exceeds a difference threshold of the property of the tissue, deliver the drive signal according to a second composite load curve, wherein the second composite load curve defines a second level of power, and wherein the second level of power is greater than the first level of power. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A surgical system for providing a drive signal to a surgical device for treating tissue, the surgical system comprising:
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a surgical generator, wherein the surgical generator is programmed to; deliver the drive signal according to a first composite load curve, wherein the first composite load curve defines a first level of power to be delivered to the tissue as a function of at least one measured property of the tissue, and wherein the first composite load curve defines a plurality of pulses to be sequentially applied to the tissue; receive a first tissue measurement over a period of a pulse of the plurality of pulses of the drive signal indicating a property of the tissue at a first time during the delivery of the pulse of the plurality of pulses of the drive signal; receive a second tissue measurement over the period of the pulse indicating the property of the drive signal at a second time during the delivery of the pulse of the plurality of pulses of the drive signal, wherein the second time is after the first time; determine, prior to completion of the delivery of the pulse of the drive signal, a difference in the property of the drive signal between the first time and the second time based on the first and second tissue measurements; prior to completion of the first composite load curve, when the difference in the property of the drive signal exceeds a difference threshold of the property of the tissue, deliver the drive signal according to a second composite load curve, wherein the second composite load curve defines a second level of power, and wherein the second level of power is greater than the first level of power. - View Dependent Claims (12, 13)
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14. A method of providing a drive signal to a surgical device for treating tissue, the method comprising:
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delivering the drive signal to a surgical device according to a first composite load curve, wherein the first composite load curve defines a first level of power to be delivered to the tissue as a function of at least one measured property of the tissue, and wherein the first composite load curve defines a plurality of pulses to be sequentially applied to the drive signal; receiving a first tissue measurement over a period of a pulse of the plurality of pulses of the drive signal indicating a property of the tissue at a first time during the delivery of the pulse of the plurality of pulses of the drive signal; receiving a second tissue measurement over the period of the pulse indicating the property of the tissue at a second time during the delivery of the pulse of the plurality of pulses of the drive signal, wherein the second time is after the first time; determining, prior to completion of the delivery of the pulse, a difference in the property of the tissue between the first time and the second time based on the first and second tissue measurements; prior to completion of the first composite load curve, when the difference in the property of the tissue exceeds a difference threshold of the property of the tissue, delivering the drive signal according to a second composite load curve, wherein the second composite load curve defines a second level of power, and wherein the second level of power is greater than the first level of power.
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Specification