Step-down coaxial microwave ablation applicators and methods for manufacturing same
First Claim
1. A method for manufacturing a microwave ablation applicator, the method comprising:
- forming a feed-line segment by (a) disposing a first dielectric on the outer surface of a first inner conductor, the first dielectric having a first face in a plane perpendicular to the longitudinal axis of the first inner conductor, and (b) disposing an outer conductor on the outer surface of the first dielectric;
forming a step-down segment by (a) disposing a second dielectric on the outer surface of a second inner conductor, the second dielectric having a diameter less than the diameter of the first dielectric, and (b) disposing a second outer conductor on the outer surface of the second dielectric; and
forming a radiator base segment by (a) disposing a third dielectric on the outer surface of a third inner conductor, the third dielectric having a diameter less than the diameter of the first dielectric, (b) disposing a third outer conductor on the outer surface of a proximal end of the third dielectric so as to form a feed gap at a distal end of the third dielectric, (c) disposing a balun dielectric on the outer surface of the third outer conductor, and (d) disposing a balun outer conductor on the outer surface of the balun dielectric.
1 Assignment
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Accused Products
Abstract
Microwave ablation applicators and methods for manufacturing the microwave ablation applicators are disclosed. A microwave ablation applicator includes a feed-line segment, a step-down segment, and a radiator base segment. The feed-line segment includes a first inner conductor, a first dielectric disposed on the first inner conductor, and a first outer conductor disposed on the first dielectric. The step-down segment includes a second inner conductor, a second dielectric disposed on the second inner conductor, and a second outer conductor disposed on the second dielectric. The radiator base segment includes a third inner conductor disposed on the third inner conductor, a third outer conductor disposed on the proximal end of the third dielectric so as to form a feed gap at a distal end of the radiator base segment, a balun dielectric disposed on the third outer conductor, and a balun outer conductor disposed on the balun dielectric.
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Citations
17 Claims
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1. A method for manufacturing a microwave ablation applicator, the method comprising:
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forming a feed-line segment by (a) disposing a first dielectric on the outer surface of a first inner conductor, the first dielectric having a first face in a plane perpendicular to the longitudinal axis of the first inner conductor, and (b) disposing an outer conductor on the outer surface of the first dielectric; forming a step-down segment by (a) disposing a second dielectric on the outer surface of a second inner conductor, the second dielectric having a diameter less than the diameter of the first dielectric, and (b) disposing a second outer conductor on the outer surface of the second dielectric; and forming a radiator base segment by (a) disposing a third dielectric on the outer surface of a third inner conductor, the third dielectric having a diameter less than the diameter of the first dielectric, (b) disposing a third outer conductor on the outer surface of a proximal end of the third dielectric so as to form a feed gap at a distal end of the third dielectric, (c) disposing a balun dielectric on the outer surface of the third outer conductor, and (d) disposing a balun outer conductor on the outer surface of the balun dielectric.
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2. A method of manufacturing a microwave ablation applicator, the method comprising:
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disposing a first dielectric on the outer surface of a first portion of an inner conductor; disposing a first outer conductor on the outer surface of the first dielectric; disposing a second dielectric on the outer surface of a second portion of the inner conductor distally adjacent to the first portion of the inner conductor, the second dielectric having a diameter less than the diameter of the first dielectric; disposing a second outer conductor on the outer surface of the second dielectric; disposing a third dielectric on the outer surface of a third portion of the inner conductor, the third dielectric having a diameter less than the diameter of the first dielectric; disposing a third outer conductor on the outer surface of a proximal end of the third dielectric so as to form a feed gap at a distal end of the third dielectric; disposing a balun dielectric on the outer surface of the third outer conductor; and disposing a balun outer conductor on the outer surface of a proximal end of the balun dielectric. - View Dependent Claims (3, 4, 5, 6)
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7. A method of manufacturing a microwave ablation applicator, the method comprising:
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removing dielectric material from a middle portion of a rod including a dielectric surrounding an inner conductor so that the middle portion of the rod has a diameter less than the diameter of a proximal portion of the rod adjacent to the middle portion; removing dielectric material from a distal portion of the rod adjacent to the middle portion of the rod so that the distal portion of the rod has a diameter less than the diameter of a middle portion of the rod; disposing a first outer conductor on the outer surface of the proximal portion of the rod; disposing a second outer conductor on the outer surface of the middle portion of the rod; disposing a third outer conductor on the outer surface of a proximal end of the distal portion of the rod so as to form a feed gap at a distal end of the distal portion of the rod; disposing a balun dielectric on the outer surface of the third outer conductor; and disposing a balun outer conductor on the outer surface of a proximal end of the balun dielectric. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification