Motor speed control circuits for surgical systems

1 . A surgical system, comprising:

an evacuation system, comprising:

a pump;

a motor operably coupled to the pump;

a flow path fluidically coupled to the pump; and

a sensor positioned along the flow path, the sensor to measure a particulate concentration of a fluid flowing along the flow path;

a generator to supply a signal to an electrosurgical instrument; and

a control circuit to regulate a speed of the motor based at least in part on the particulate concentration measured by the sensor and a power level of the signal supplied by the generator.

2 . The surgical system of claim 1 , wherein the control circuit is to increase the speed of the motor in response to the particulate concentration being greater than a first threshold.

3 . The surgical system of claim 1 , wherein the control circuit is to decrease the speed of the motor in response to the particulate concentration being less than a second threshold.

4 . The surgical system of claim 1 , wherein the control circuit is to decrease the speed of the motor proportionally as the particulate concentration decreases.

5 . The surgical system of claim 1 , wherein the control circuit is to regulate the power level based at least in part on the particulate concentration received from the sensor.

6 . The surgical system of claim 5 , wherein the control circuit is to increase the speed of the motor in response to the power level increasing from a first power level to a second power level.

7 . The surgical system of claim 6 , wherein the second power level corresponds to the power level required by a cutting mode.

8 . The surgical system of claim 5 , wherein the generator is to increase the power level from a third power level to a fourth power level and decrease a voltage of the signal from a first voltage to a second voltage in response to an increase in particle concentration.

9 . The surgical system of claim 1 , wherein the control circuit comprises a communication circuit communicatively coupled to a situational awareness circuit, wherein the control circuit is to regulate a speed of the motor based on an input from the situational awareness circuit indicative of an inferred step of a surgical procedure.

10 . The surgical system of claim 1 , further comprising a user interface to display the speed of the motor.

11 . A method, comprising:

supplying, by a generator, an electrosurgical signal to an electrosurgical instrument;

receiving, by a control circuit, a signal from a sensor of a surgical evacuation system, the surgical evacuation system further comprising:

a pump;

a motor to drive the pump; and

a flow path fluidically coupled to the pump, wherein the sensor is positioned along the flow path and is to monitor a particulate concentration in a fluid flowing along the flow path; and

regulating, by the control circuit, a speed of the motor based at least in part on the particulate concentration measured by the sensor and a power level of the electrosurgical signal supplied by the generator.

12 . The method of claim 11 , wherein the regulating comprises one or more adjustments selected from a group consisting of:

increasing the speed of the motor in response to the particulate concentration being greater than a first threshold;

decreasing the speed of the motor in response to the particulate concentration being less than a second threshold; and

decreasing the speed of the motor proportionally as the particulate concentration decreases.

13 . The method of claim 11 , further comprising regulating, by the control circuit, the power level based at least in part on the particulate concentration received from the sensor.

14 . The method of claim 13 , further comprising increasing, by the control circuit, the speed of the motor in response to the power level increasing from a first power level to a second power level.

15 . The method of claim 13 , further comprising increasing the power level from a third power level to a fourth power level and decreasing a voltage of the electrosurgical signal supplied from a first voltage to a second voltage in response to an increase in particle concentration.

16 . The method of claim 12 , further comprising displaying the speed of the motor by a user interface.

17 . A non-transitory computer readable medium storing instructions executable by at least one processor of a control circuit causing the control circuit to:

receive a signal from a sensor of a surgical evacuation system, the surgical evacuation system further comprising:

a pump;

a motor to drive the pump; and

a flow path fluidically coupled to the pump, wherein the sensor is positioned along the flow path and is to monitor a particulate concentration in a fluid flowing along the flow path;

adjust a speed of the motor based at least in part on the particulate concentration measured by the sensor; and

adjust a parameter of an electrosurgical signal supplied by a generator to an electrosurgical instrument based at least in part on the particulate concentration received from the sensor.

18 . The non-transitory computer readable medium of claim 17 , wherein adjusting the speed of the motor comprises one or more of:

increasing the speed of the motor in response to the particulate concentration being greater than a first threshold;

decreasing the speed of the motor in response to the particulate concentration being less than a second threshold; or

decreasing the speed of the motor proportionally as the particulate concentration decreases.

19 . The non-transitory computer readable medium of claim 17 , wherein the parameter of the electrosurgical signal comprises a power level.

20 . The non-transitory computer readable medium of claim 19 , wherein the instructions further cause the control circuit to regulate the speed of the motor based at least in part on the power level of the electrosurgical signal supplied by the generator.