Microwave antennas for medical hyperthermia, thermotherapy and diagnosis
First Claim
1. A medical treatment system for treating tissue, comprising:
- an antenna for radiating energy from a source of electromagnetic energy, the antenna having a longitudinal axis and including;
a first radiating element positioned substantially along the longitudinal axis and having a proximal end coupled to the source; and
a second radiating element including a conductor helically wound about the longitudinal axis and coaxially positioned around the first radiating element to receive energy radiated by the first radiating element; and
the first radiating element and the second radiating element being movable along the longitudinal axis with respect to the other of the radiating element.
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Accused Products
Abstract
A medical treatment system includes an antenna for radiating energy from a source of electromagnetic energy and including a first radiating element and a second radiating element having a conductor helically wound and coaxially positioned around the first radiating element to receive energy radiated by the first radiating element. The first and second radiating elements are positioned substantially along a longitudinal axis of the antenna with the first radiating element having a proximal end coupled to the source of electromagnetic energy. With this arrangement, energy from the electromagnetic source is efficiently conveyed from the first radiating element and then resonates the coaxially positioned and helically wound second radiating element.
294 Citations
27 Claims
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1. A medical treatment system for treating tissue, comprising:
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an antenna for radiating energy from a source of electromagnetic energy, the antenna having a longitudinal axis and including;
a first radiating element positioned substantially along the longitudinal axis and having a proximal end coupled to the source; and
a second radiating element including a conductor helically wound about the longitudinal axis and coaxially positioned around the first radiating element to receive energy radiated by the first radiating element; and
the first radiating element and the second radiating element being movable along the longitudinal axis with respect to the other of the radiating element. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A medical treatment system for treating tissue, comprising:
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an electromagnetic energy source for providing electromagnetic energy;
a pair of medical instruments, each including an antenna system disposed within a catheter having a proximal end, distal end, and a longitudinal axis extending therebetween, the catheter defining an inner lumen extending along the axis between the proximal end and the distal end;
at least a first one of the antenna systems being a transmitting antenna system including;
a first radiating element positioned substantially along the longitudinal axis and having a proximal end coupled to the electromagnetic energy source; and
a second radiating element including a conductor helically wound about the longitudinal axis and coaxially positioned around the first radiating element to receive energy radiated by the first radiating element. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27)
positioning a first one of the pair of medical instrument within the urethra;
positioning a second one of the pair of medical instrument within the rectum; and
applying electromagnetic energy to the first of the pair of medical instruments to radiate the prostate.
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26. The method of claim 25 further comprising the step of receiving, by the second one of the pair of medical instruments, the electromagnetic energy passing through the prostate.
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27. The method of claim 25 further comprising the step of applying electromagnetic energy to the second of the pair of medical instruments to radiate the prostate.
Specification