RF energy controller and method for electrosurgical medical devices
First Claim
Patent Images
1. A control unit that is configured to control delivery of radio frequency (RF) energy to a medical device, the control unit comprising:
- an input terminal configured to receive RF energy from an RF generator;
switching circuitry configured to switch between a closed state and an open state,wherein when the switching circuitry is configured in the closed state, the switching circuitry is configured to permit a first portion of the RF energy received from an RF generator to be output by the control unit to a medical device; and
wherein when the switching circuitry is configured in the open state, the switching circuitry is configured to prevent the first portion of the RF energy from being output by the control unit to the medical device;
energy measurement circuitry configured to;
measure an amount of the first portion of the RF energy delivered to the medical device; and
switch the switching circuitry from the closed state to the open state when the amount of the first portion of the RF energy delivered to the medical device reaches a predetermined RF energy level; and
power supply circuitry configured to;
receive a second portion of the RF energy received from the RF generator;
generate one or more power supplies based on the second portion of the RF energy; and
supply the one or more power supplies to the energy measurement circuitry to power the energy measurement circuitry.
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Abstract
A control unit controls delivery of RF energy generated by an RF generator to a medical device configured to perform a medical procedure. The control unit may be separate from the RF generator, and may have an input that may be attached to an output of the RF generator. The control unit includes switching circuitry that is closed while an amount of RF energy is transmitted through the control unit to the medical device. The switching circuitry opens when the amount of RF energy reaches a threshold level.
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Citations
18 Claims
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1. A control unit that is configured to control delivery of radio frequency (RF) energy to a medical device, the control unit comprising:
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an input terminal configured to receive RF energy from an RF generator; switching circuitry configured to switch between a closed state and an open state, wherein when the switching circuitry is configured in the closed state, the switching circuitry is configured to permit a first portion of the RF energy received from an RF generator to be output by the control unit to a medical device; and wherein when the switching circuitry is configured in the open state, the switching circuitry is configured to prevent the first portion of the RF energy from being output by the control unit to the medical device; energy measurement circuitry configured to; measure an amount of the first portion of the RF energy delivered to the medical device; and switch the switching circuitry from the closed state to the open state when the amount of the first portion of the RF energy delivered to the medical device reaches a predetermined RF energy level; and power supply circuitry configured to; receive a second portion of the RF energy received from the RF generator; generate one or more power supplies based on the second portion of the RF energy; and supply the one or more power supplies to the energy measurement circuitry to power the energy measurement circuitry. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method to control transmission of radio frequency (RF) energy from a RF generator to a medical device with a control unit coupled to the RF generator and the medical device, the method comprising:
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configuring switching circuitry of the control unit in a closed state; receiving, at an input of the control unit, the RF energy from the RF generator; when the switching circuitry is in the closed state; receiving, with the switching circuitry, a first portion of the RF energy; and transmitting, with the switching circuitry, the first portion of the RF energy to an output of the control unit; determining, with energy measurement circuitry, an amount of the first portion of the RF energy delivered to the medical device; switching the switching circuitry, from the closed state to an open state in response to determining that the amount of the first portion of the RF energy reached a predetermined threshold energy level; receiving, with power supply circuitry of the control unit, a second portion of the RF energy; generating, with the power supply circuitry, one or more power supplies based on the second portion of the RF energy; and supplying, with the power supply circuitry, the one or more power supplies to the energy measurement circuitry to power the energy measurement circuitry. - View Dependent Claims (12, 13, 14, 15)
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16. A control unit configured to control delivery of radio frequency (RF) energy, the control unit comprising:
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an output coupled to a medical device configured to perform an ablation procedure; an input coupled to an output of a RF generator configured to supply RF energy to the medical device for the ablation procedure; switching circuitry coupled to the input and the output, the switching circuitry configured to permit the control unit to output a first portion of the RF energy received from the RF generator in a closed state, and to prevent the control unit from outputting the first portion of the RF energy received from the RF generator in an open state; and energy measurement circuitry coupled to the output, the energy measurement circuitry configured to determine an amount of the first portion of the RF energy being delivered to the medical device, and to switch the switching circuitry from the closed state to the open state when the amount of first portion of the RF energy reaches a threshold level; and power supply circuitry configured to; receive a second portion of the RF energy received from the RF generator; generate one or more power supplies based on the second portion of the RF energy received from the RF generator; and supply the one or more power supplies to active components of the control unit. - View Dependent Claims (17, 18)
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Specification