Electrosurgical generators and sensors
First Claim
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1. A sensor for sensing current, the sensor comprising:
- a current sensor coil defining an opening therethrough and including;
an outer coil;
a pair of first and second terminals coupled to the outer coil at a first end of the current sensor coil; and
an inner coil coupled to and disposed within the outer coil; and
at least one active lead and at least one return lead each passing through the opening of the current sensor coil, wherein the current sensor coil is configured to output a differential signal indicative of a current within the at least one active lead or the at least one return lead, the at least one active lead including;
a top portion extending parallel with and over a top surface of the current sensor coil at a first non-zero acute angle relative to an axis that extends through the first end of the current sensor coil and a center of the opening of the current sensor coil; and
a bottom portion extending parallel with and over a bottom surface of the current sensor coil at a second non-zero acute angle relative to the axis, the first and second angles being symmetrical relative to each other about the axis.
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Abstract
A sensor for sensing current includes a current sensor coil and at least one active lead and at least one return lead. The current sensor coil includes an outer coil and an inner coil coupled to and disposed within the outer coil. The at least one active lead and the at least one return lead pass through the current sensor coil opening. The current sensor coil is configured to output a differential signal indicative of a current within the at least one active lead and the at least one return lead.
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Citations
17 Claims
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1. A sensor for sensing current, the sensor comprising:
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a current sensor coil defining an opening therethrough and including; an outer coil; a pair of first and second terminals coupled to the outer coil at a first end of the current sensor coil; and an inner coil coupled to and disposed within the outer coil; and at least one active lead and at least one return lead each passing through the opening of the current sensor coil, wherein the current sensor coil is configured to output a differential signal indicative of a current within the at least one active lead or the at least one return lead, the at least one active lead including; a top portion extending parallel with and over a top surface of the current sensor coil at a first non-zero acute angle relative to an axis that extends through the first end of the current sensor coil and a center of the opening of the current sensor coil; and a bottom portion extending parallel with and over a bottom surface of the current sensor coil at a second non-zero acute angle relative to the axis, the first and second angles being symmetrical relative to each other about the axis. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A sensor for sensing current, the sensor comprising:
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a current sensor coil defining an opening therethrough and diametrically opposed first and second ends, the current sensor coil including; an outer coil including a first semi-circular portion and a second semi-circular portion; and an inner coil disposed within the outer coil and including a first semi-circular portion and a second semi-circular portion, wherein the first semi-circular portions and the second semi-circular portions of the inner and outer coils are separated at the second end; and at least one active lead passing through the current sensor coil, wherein the current sensor coil is configured to output a signal indicative of a current within the at least one active lead, the at least one active lead including; a top portion extending along a plane defined by a top surface of the first semi-circular portion of the outer coil at a first non-zero acute angle relative to an axis that extends through the first end of the current sensor coil and a center of the opening of the current sensor coil; and a bottom portion extending along a plane defined by a bottom surface of the second semi-circular portion of the outer coil at a second non-zero acute angle relative to the axis, the first and second angles being symmetrical relative to each other about the axis. - View Dependent Claims (14, 15, 16, 17)
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Specification