RF return pad current detection system
First Claim
1. A return pad current detection system for use in monopolar surgery, comprising:
- a plurality of conductive pads, wherein each conductive pad includes a plurality of conductive elements;
a plurality of sensors operatively connected to the plurality of conductive pads which sense current returning to each pad; and
a comparator which determines the difference in current among the plurality of conductive pads, said comparator operatively connected to a warning device which warns a user if the current differential among pads is above or below a certain predetermined limit.
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Accused Products
Abstract
The present disclosure provides an electrosurgical return pad current detection system for use in monopolar surgery as well as a method of using the same. The detection system comprises a plurality of conductive pads which include a plurality of conductive elements. The detection system further includes a sensor which senses the current returning to each conductive pad as well as a comparator which determines the difference in current among a plurality of conductive pads. If the current differential is above or below a prescribed limit, the system will alert the user of potential hazards and/or alter the amount of energy delivered to a surgical device.
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Citations
21 Claims
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1. A return pad current detection system for use in monopolar surgery, comprising:
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a plurality of conductive pads, wherein each conductive pad includes a plurality of conductive elements;
a plurality of sensors operatively connected to the plurality of conductive pads which sense current returning to each pad; and
a comparator which determines the difference in current among the plurality of conductive pads, said comparator operatively connected to a warning device which warns a user if the current differential among pads is above or below a certain predetermined limit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 19)
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9. A method for performing monopolar surgery, the method comprising the steps of:
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providing a return pad current detection system comprising;
a plurality of conductive pads, wherein each conductive pad includes a plurality of conductive elements, the conductive pad defining a perimeter;
a plurality of sensors operatively connected to the plurality of conductive pads which sense current returning to each pad; and
a comparator which determines the difference in current among the plurality of conductive pads;
placing the return pad current detection system in contact with a patient;
generating electrosurgical energy via an electrosurgical generator;
supplying the electrosurgical energy to the patient via an active electrode;
measuring the current returning to each conductive pad;
detecting imbalances in current by comparing the current returning to one conductive pad with the current returning to each of the remaining pads;
warning the user of possible hazardous conditions; and
regulating the imbalances among pads. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A return pad current detection system for use in monopolar surgery, comprising:
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an electrosurgical generator capable of generating electrical current;
a plurality of conductive pads, wherein each conductive pad includes a plurality of conductive elements, the conductive pad defining a perimeter;
a plurality of sensors operatively connected to the plurality of conductive pads which sense current returning to each pad;
a plurality of ac to dc converters producing an output, wherein each converter is connected to the sensing device of each pad; and
a plurality of differential sensing devices, wherein each sensing device is dimensioned to receive the output of at least two distinct ac to dc converters and each sensing device'"'"'s output corresponds to a signal representative of the current differential among at least two pads. - View Dependent Claims (16, 17, 18, 20, 21)
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Specification