Flexible microwave catheters for natural or artificial lumens
First Claim
1. A flexible microwave catheter comprising:
- a catheter hub;
an outer sheath extending from the catheter hub, the outer sheath configured to prevent a release of microwave energy therethrough; and
a coaxial feedline disposed within the outer sheath, the coaxial feedline having an inner conductor, an inner dielectric coaxially disposed about the inner conductor, and an outer conductor coaxially disposed about the inner dielectric, wherein the coaxial feedline defines a radiating portion at a distal portion of the coaxial feedline, the radiating portion configured to emit microwave energy; and
wherein the coaxial feedline is slidable within the outer sheath and along a longitudinal axis of the outer sheath such that the radiating portion is selectively deployable from the outer sheath upon distal movement of the coaxial feedline relative to the outer sheath, and wherein the outer sheath includes a first inner diameter along at least a portion of the longitudinal axis and a distal portion of the outer sheath defines a sliding hub having a second inner diameter greater than the first inner diameter.
4 Assignments
0 Petitions
Accused Products
Abstract
A microwave delivery device, including a coaxial feedline having an inner conductor, an inner dielectric insulator coaxially disposed about the inner conductor, and an outer conductor coaxially disposed about the inner dielectric, and a radiating portion operably coupled to a distal end. The radiating portion includes a radiating portion inner conductor operable coupled to and extending from a distal end of the coaxial feedline inner conductor, a shielding outer conductor helically wrapped about the radiating portion inner conductor and operably coupled to the coaxial feedline outer conductor; and a shielding dielectric positioned between the radiating portion inner conductor and the shielding outer conductor wherein the width of the shielding outer conductor varies according to the longitudinal position thereof along the coaxial feedline inner conductor, and a cap operably coupled to a distal end of the radiating portion inner conductor and the shielding outer conductor to provide an electrical connection therebetween.
38 Citations
13 Claims
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1. A flexible microwave catheter comprising:
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a catheter hub; an outer sheath extending from the catheter hub, the outer sheath configured to prevent a release of microwave energy therethrough; and a coaxial feedline disposed within the outer sheath, the coaxial feedline having an inner conductor, an inner dielectric coaxially disposed about the inner conductor, and an outer conductor coaxially disposed about the inner dielectric, wherein the coaxial feedline defines a radiating portion at a distal portion of the coaxial feedline, the radiating portion configured to emit microwave energy; and wherein the coaxial feedline is slidable within the outer sheath and along a longitudinal axis of the outer sheath such that the radiating portion is selectively deployable from the outer sheath upon distal movement of the coaxial feedline relative to the outer sheath, and wherein the outer sheath includes a first inner diameter along at least a portion of the longitudinal axis and a distal portion of the outer sheath defines a sliding hub having a second inner diameter greater than the first inner diameter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification