Minigenerator
First Claim
1. A generator for powering a medical device, comprising:
- a battery;
an energy converter coupled to the battery;
a monitor circuit;
a controller; and
a final output circuit having a first input and second input, and an output, the final output circuit including a first transformer and a second transformer, each of the first and second transformers having a first winding and a second winding, the first input coupled to the first winding of the first transformer and the first winding of the second transformer, the second input coupled to the first winding of the first transformer and the second winding of the second transformer, the second winding of the first transformer providing the output, the output being coupled to the medical device,wherein the monitor circuit is configured to obtain a value of current or power supplied to the final output circuit, the controller being adapted to adjust an amount of energy provided by the energy converter to the final output circuit in response to the obtained value of current or power.
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Accused Products
Abstract
The present invention provides an Electro Surgical Generator (ESG) optimized for lung biopsy. The ESG is exclusively battery operated and fits within the handpiece of modern endoscopic electrosurgical/electrocautery instruments, thereby avoiding wires, adapters, and coupling mechanisms. The ESG is adaptable to generate different waveforms that vary with respect to frequency, pulse width, amplitude, etc. through the use of timing circuits and voltage control (i.e. transformers). The ESG is both energy-efficient and safe. A closed loop feedback system featuring a monitor and controller ensure no more power than necessary is provided to achieve a goal current level. Dynamic Power Control (DPC) and Dynamic Temperature Control (DTC) systems vary power to maintain temperature with the lowest possible power. These features prolong battery life and guard against tissue damage. The generator includes other safety features such as resiliency against and the ability to overcome single fault events such as short circuits.
10 Citations
11 Claims
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1. A generator for powering a medical device, comprising:
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a battery; an energy converter coupled to the battery; a monitor circuit; a controller; and a final output circuit having a first input and second input, and an output, the final output circuit including a first transformer and a second transformer, each of the first and second transformers having a first winding and a second winding, the first input coupled to the first winding of the first transformer and the first winding of the second transformer, the second input coupled to the first winding of the first transformer and the second winding of the second transformer, the second winding of the first transformer providing the output, the output being coupled to the medical device, wherein the monitor circuit is configured to obtain a value of current or power supplied to the final output circuit, the controller being adapted to adjust an amount of energy provided by the energy converter to the final output circuit in response to the obtained value of current or power. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification