Minimally invasive microwave ablation device
AssigneePrecision Microwave Inc.
InventorsAustin Pfannenstiel, Hojjatollah Fallahi, Punit Prakash
Life of this patent
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Abstract
An electrosurgical device (10) is provided that is operable to deliver microwave energy within a controlled angular expanse to cause targeted tissue ablation. The device (10) comprises a blocking or reflecting material such as cylindrical members (34) that are laterally spaced from the antenna (20) that is operable to emit the microwave energy. The reflecting material creates regions in and/or surrounding the device into which sensors (51), such as thermocouple wires, may be placed to monitor a condition associated with the device or the patient's body.
Claims38
A device for delivering electromagnetic energy to a target tissue within a human or animal body comprising:
- an elongate body comprising a proximal end, a distal end, and at least one lumen interconnecting the proximal and distal ends;
- an antenna located within the at least one lumen and configured to emit electromagnetic energy therefrom sufficiently strong to cause tissue ablation;
- and
- at least one elongate cylindrical member located within the same or a different lumen as the antenna, the at least one elongate cylindrical member being disposed laterally from the antenna, the at least one elongate cylindrical member comprising a distal end segment that is secured to the elongate body distal end.
A device for delivering electromagnetic energy to a target tissue within a human or animal body comprising:
- an elongate body comprising a proximal end, a distal end, and a lumen interconnecting the proximal and distal ends;
- an antenna located within the lumen and configured to emit electromagnetic energy therefrom sufficiently strong to cause tissue ablation;
- and
- a plurality of elongate cylindrical members located within the lumen and disposed laterally from the antenna, the plurality of elongate cylindrical members being configured to reflect a portion of the electromagnetic energy emitted from the antenna and to shield a portion of the device from the electromagnetic energy,
- at least a portion of each of the plurality of elongate cylindrical members comprising an electrically conductive material.
A device for delivering electromagnetic energy to a target tissue within a human or animal body comprising:
- an elongate body comprising a proximal end, a distal end, and at least one lumen interconnecting the proximal and distal ends;
- an antenna located within the at least one lumen and configured to emit electromagnetic energy therefrom sufficiently strong to cause tissue ablation;
- and
- at least one elongate cylindrical member located within the same or a different lumen as the antenna, the at least one elongate cylindrical member being disposed laterally from the antenna,
- the elongate body distal end comprising a rigid spacer located at the distal end thereof, a distal portion of the antenna being received in the spacer.
A method of ablating tissue within an organ of a body comprising:
- inserting a directional microwave ablation device into the body containing the tissue to be ablated, the device comprising an antenna that is configured to emit electromagnetic energy therefrom that is sufficiently strong to cause tissue ablation;
- positioning the device in direct contact with, but without penetrating, the organ;
- and
- activating the device thereby causing the antenna to emit electromagnetic radiation that is sufficiently strong to cause ablation of the tissue within the organ.
A method of ablating a tumor within a body comprising:
- inserting a directional microwave ablation device into the tumor to be ablated, the device comprising an antenna that is configured to emit electromagnetic energy therefrom that is sufficiently strong to cause tissue ablation;
- activating the device thereby causing the antenna to emit electromagnetic radiation that is sufficiently strong to cause ablation of a portion of the tumor;
- rotating the device within the tumor without removing the device from the tumor;
- and
- ablating another portion of the tumor with the device.
Dependencies are inferred from the claim text.