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US 12,629,205 B2Granted
Microwave sealer device and generator
AssigneeMedtronic Advanced Energy LLC
InventorsMohammad Miri, Prakash Manley
Life of this patent
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Abstract
Devices, kits, and methods described herein are usable for medical treatments by generating local maxima using constructive interference of multiple oscillator outputs. Where constructive interference occurs between the oscillator waves, the output signal can have significant strength to cause heating and coagulation at a bleeding vessel, for instance, while at areas with little interaction (or with destructive interference) there is insufficient power dissipated by the output signal to cause heating sufficient to cause coagulating heating.
Claims19
A system comprising:
- a plurality of oscillators;
- a processor configured to drive the plurality of oscillators such that at least one of the plurality of oscillators has a different phase or frequency from another one of the plurality of oscillators;
- a combiner arranged to receive an output from each of the plurality of oscillators and configured to, based on the received output, generate a summed output, wherein the summed output includes at least a first microwave signal and a second microwave signal such that the first microwave signal and second microwave signal alternatingly constructively and destructively interfere;
- an amplifier arranged to receive the summed output and configured to, based on the summed output, generate a signal;
- a directional antenna configured to output the signal at a depth within a user that seals a targeted tissue area in a standoff arrangement relative to the user, such that no contact between the device and the user or no incisions to the user is required, wherein the directional antenna is contained within a housing and behind a non-electromagnetically sensitive material;
- a forward-sense circuit configured to sense forward power from the system to define the depth within the user of treatment effect from the system;
- and
- a reverse-sense circuit configured to sense reversed power back to the system to define a distance from tissue of the user.
5 more elements
A method for treating a target, the method comprising:
- operating a first oscillator at a first frequency, a first phase, and a first amplitude to generate a first microwave signal output;
- operating a second oscillator at a second frequency, a second phase, and a second amplitude to generate a second microwave signal output;
- combining and amplifying the first microwave signal output and the second microwave signal output to generate a signal;
- emitting the signal at a directional antenna, the directional antenna contained within a housing and behind a non-electromagnetically sensitive material;
- sensing forward power with a forward-sense circuit to define the depth within the user of treatment effect;
- and
- sensing reversed power with a reverse-sense circuit to define a distance from tissue of the user,
- wherein the first frequency is different from the second frequency, and the first frequency and the second frequency are selected such that the signal has sufficient strength to seal the target at a depth within a user in a standoff arrangement relative to the user due to constructive interference between the first microwave signal output and the second microwave signal output, such that no contact with the user or no incisions to the user is required.
5 more elements
A kit comprising:
- a device including:
- plurality of oscillators;
- a processor configured to drive the oscillators such that at least one of the plurality of oscillators has a different phase or frequency from another one of the plurality of oscillators;
- a combiner arranged to receive an output from each of the plurality of oscillators to generate a summed output, wherein the summed output includes at least a first microwave signal and a second microwave signal such that the first microwave signal and second microwave signal alternatingly constructively and destructively interfere;
- an amplifier arranged to receive the summed output and configured to generate a signal;
- a directional antenna configured to output the signal at a depth within a user that seals a targeted tissue area in a standoff arrangement relative to the user, such that no contact between the device and the user or no incisions to the user is required;
- a forward-sense circuit configured to sense forward power from the system to define the depth within the user of treatment effect from the system;
- and
- a reverse-sense circuit configured to sense reversed power back to the system to define a distance from tissue of the user,
- a housing configured to contain the directional antenna behind a non-electromagnetically sensitive material, the housing further comprising a plurality of buttons;
- a disposable package configured to contain the housing.
8 more elements
Dependencies are inferred from the claim text.