Ablation devices with adjustable radiating section lengths, electrosurgical systems including same, and methods of adjusting ablation fields using same
First Claim
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1. An energy applicator for directing energy to tissue, comprising:
- a feedline having an inner conductor;
a radiating section disposed at a distal portion of the feedline, wherein the radiating section has a length;
a length adjustment member configured to selectively adjust the length of the radiating section, the length adjustment member including an inner sleeve and an outer sleeve disposed around at least a portion of the inner sleeve, a portion of the outer sleeve positioned distal to a distal end of the inner conductor;
a pivot element disposed proximal to the radiating section, the pivot element coupled to the outer sleeve via a tensioning element, the pivot element configured to cause longitudinal movement of the outer sleeve to adjust the length of the radiating section;
an outer conductor having a distal end spaced apart by a gap distance from a proximal end of the radiating section to define a feed point therebetween; and
a gap adjustment member disposed proximal to the length adjustment member, the gap adjustment member adapted to allow for selective adjustment of the gap distance of the feed point.
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Abstract
An energy applicator for directing energy to tissue includes a feedline and a radiating section operably coupled to the feedline, wherein the radiating section has a length. The energy applicator also includes a length adjustment member adapted to allow for selective adjustment of the length of the radiating section. The length adjustment member includes a first pivot element and a first tensioning element coupled to the first pivot element.
97 Citations
20 Claims
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1. An energy applicator for directing energy to tissue, comprising:
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a feedline having an inner conductor; a radiating section disposed at a distal portion of the feedline, wherein the radiating section has a length; a length adjustment member configured to selectively adjust the length of the radiating section, the length adjustment member including an inner sleeve and an outer sleeve disposed around at least a portion of the inner sleeve, a portion of the outer sleeve positioned distal to a distal end of the inner conductor; a pivot element disposed proximal to the radiating section, the pivot element coupled to the outer sleeve via a tensioning element, the pivot element configured to cause longitudinal movement of the outer sleeve to adjust the length of the radiating section; an outer conductor having a distal end spaced apart by a gap distance from a proximal end of the radiating section to define a feed point therebetween; and a gap adjustment member disposed proximal to the length adjustment member, the gap adjustment member adapted to allow for selective adjustment of the gap distance of the feed point. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An electrosurgical system, comprising:
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a generator; and an ablation device including; a feedline; a radiating section disposed at a distal portion of the feedline, wherein the radiating section has a length; a radiation field adjustment member configured to selectively adjust an ablation field radiated about the radiating section into tissue, the radiation field adjustment member including an inner sleeve and an outer sleeve disposed around at least a portion of the inner sleeve, a portion of the outer sleeve positioned distal to a distal end of the feedline; a pivot element disposed proximal to the radiating section, the pivot element coupled to the outer sleeve via a tensioning element, the pivot element configured to cause longitudinal movement of the outer sleeve to adjust the ablation field radiated about the radiating section; a conductor having a distal end spaced apart by a gap distance from a proximal end of the radiating section to define a feed point therebetween; and a gap adjustment member disposed proximal to the radiation field adjustment member, the gap adjustment member adapted to allow for selective adjustment of the gap distance of the feed point. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. An electrosurgical system, comprising:
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a generator; and an energy applicator configured to operably couple to the generator, the energy applicator including; a feedline having an inner conductor; a radiating section disposed at a distal portion of the feedline, wherein the radiating section has a length; a length adjustment member configured to selectively adjust the length of the radiating section, the length adjustment member including an inner sleeve and an outer sleeve disposed around at least a portion of the inner sleeve, a portion of the outer sleeve positioned distal to a distal end of the inner conductor; a pivot element disposed proximal to the radiating section, the pivot element coupled to the outer sleeve via a tensioning element, the pivot element configured to cause longitudinal movement of the outer sleeve to adjust the length of the radiating section; an outer conductor having a distal end spaced apart by a gap distance from a proximal end of the radiating section to define a feed point therebetween; and a gap adjustment member disposed proximal to the length adjustment member, the gap adjustment member adapted to allow for selective adjustment of the gap distance of the feed point. - View Dependent Claims (20)
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Specification