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US 8,409,188 B2Granted
Ablation devices with adjustable radiating section lengths, electrosurgical systems including same, and methods of adjusting ablation fields using same
AssigneeCovidien LP
InventorsSteven Kim, Kenlyn S. Bonn, Mani N. Prakash, Francesca Rossetto
Life of this patent
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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.
Claims16
An energy applicator for directing energy to tissue, comprising:
- a feedline;
- a radiating section operably coupled to the feedline, the radiating section including a dielectric material and an inner conductor, a portion of the inner conductor extending distally beyond a distal end of the dielectric material, wherein the radiating section has a length;
- and
- a length adjustment member adapted to allow for selective adjustment of the length of the radiating section, wherein the length adjustment member includes a tapered portion disposed at a distal end of the radiating section, the tapered portion defining a cavity therein, wherein a distal portion of the portion of the inner conductor extending distally beyond the distal end of the dielectric material includes a coiled portion disposed within the cavity, the cavity configured to allow the coiled portion of the inner conductor to wind or unwind as the length of the radiating section is adjusted.
1 more element
An electrosurgical system, comprising:
- a generator;
- and
- an ablation device including:
- a feedline;
- a radiating section operably coupled to the feedline, the radiating section including a dielectric material and an inner conductor, a portion of the inner conductor extending distally beyond a distal end of the dielectric material, wherein the radiating section has a length;
- and
- a radiation field adjustment member adapted to allow for selective adjustment of the ablation field radiated about the radiating section into tissue, the radiation field adjustment member including a length adjustment member adapted to allow for selective adjustment of the length of the radiating section, wherein the length adjustment member includes a tapered portion disposed at a distal end of the radiating section, the tapered portion defining a cavity therein, wherein a distal portion of the portion of the inner conductor extending distally beyond the distal end of the dielectric material includes a coiled portion disposed within the cavity, the cavity configured to allow the coiled portion of the inner conductor to wind or unwind as the length of the radiating section is adjusted.
4 more elements
Dependencies are inferred from the claim text.