Microwave ablation instrument with interchangeable antenna probe
First Claim
1. An ablation instrument, comprising:
- a handle assembly including;
a handle hypotube having a distal portion;
a first coupling member coupled to the distal portion of the handle hypotube;
a handle feedline extending longitudinally through the handle hypotube and configured to be coupled to an electrosurgical energy source, the handle feedline including;
an outer conductor having a distal portion; and
an inner conductor having a distal portion that extends distally from the distal portion of the outer conductor; and
a handle coolant tube extending longitudinally between the handle hypotube and the outer conductor of the handle feedline to define an outflow conduit that extends longitudinally between the handle coolant tube and the handle hypotube and an inflow conduit that extends longitudinally between the handle coolant tube and the outer conductor, the handle coolant tube having a distal portion; and
an ablation probe configured to detachably couple to the handle assembly, the ablation probe including;
a probe hypotube having a proximal portion configured to form a fluid-tight seal with the distal portion of the handle hypotube;
a second coupling member coupled to the proximal portion of the probe hypotube and configured to be detachably coupled to the first coupling member of the handle assembly;
a probe feedline extending through the probe hypotube and including;
an outer conductor having a proximal portion configured to be detachably coupled to the distal portion of the outer conductor of the handle feedline; and
an inner conductor having a proximal portion defining an elongated cavity therein, the elongated cavity configured to detachably receive the distal portion of the inner conductor of the handle feedline; and
a probe coolant tube extending longitudinally between the probe hypotube and the outer conductor of the probe feedline to define an outflow conduit that extends longitudinally between the probe coolant tube and the probe hypotube, and an inflow conduit that extends longitudinally between the probe coolant tube and the outer conductor of the probe feedline, the probe coolant tube having a proximal portion configured to detachably couple to the distal portion of the handle coolant tube and to selectively form a fluid-tight seal with the distal portion of the handle coolant tube such that, upon coupling of the ablation probe to the handle assembly, the inflow conduit of the probe coolant tube is continuous with the inflow conduit of the handle coolant tube and the outflow conduit of the probe coolant tube is continuous with the outflow conduit of the handle coolant tube.
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Accused Products
Abstract
A surgical ablation system features a source of ablation energy, a handle adapted to operably couple to the source of ablation energy, and an ablation probe adapted to operably couple to the handle. The handle includes a housing having a proximal end and a distal end, a hub included within the housing having a plenum defined therein, and a proximal feedline in fluid communication at a proximal end thereof with the plenum and joined at a distal end thereof to a first coupling member. The ablation probe includes a probe hypotube shaft having a proximal end and a distal end, a second coupling member disposed at a proximal end of the probe hypotube shaft adapted to operably couple with the first coupling member, a distal tip adapted to penetrate tissue. Ablation energy is deliverable by the ablation probe when the source of ablation energy is operably coupled to the handle and the handle is operably coupled to the ablation probe.
108 Citations
18 Claims
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1. An ablation instrument, comprising:
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a handle assembly including; a handle hypotube having a distal portion; a first coupling member coupled to the distal portion of the handle hypotube; a handle feedline extending longitudinally through the handle hypotube and configured to be coupled to an electrosurgical energy source, the handle feedline including; an outer conductor having a distal portion; and an inner conductor having a distal portion that extends distally from the distal portion of the outer conductor; and a handle coolant tube extending longitudinally between the handle hypotube and the outer conductor of the handle feedline to define an outflow conduit that extends longitudinally between the handle coolant tube and the handle hypotube and an inflow conduit that extends longitudinally between the handle coolant tube and the outer conductor, the handle coolant tube having a distal portion; and an ablation probe configured to detachably couple to the handle assembly, the ablation probe including; a probe hypotube having a proximal portion configured to form a fluid-tight seal with the distal portion of the handle hypotube; a second coupling member coupled to the proximal portion of the probe hypotube and configured to be detachably coupled to the first coupling member of the handle assembly; a probe feedline extending through the probe hypotube and including; an outer conductor having a proximal portion configured to be detachably coupled to the distal portion of the outer conductor of the handle feedline; and an inner conductor having a proximal portion defining an elongated cavity therein, the elongated cavity configured to detachably receive the distal portion of the inner conductor of the handle feedline; and a probe coolant tube extending longitudinally between the probe hypotube and the outer conductor of the probe feedline to define an outflow conduit that extends longitudinally between the probe coolant tube and the probe hypotube, and an inflow conduit that extends longitudinally between the probe coolant tube and the outer conductor of the probe feedline, the probe coolant tube having a proximal portion configured to detachably couple to the distal portion of the handle coolant tube and to selectively form a fluid-tight seal with the distal portion of the handle coolant tube such that, upon coupling of the ablation probe to the handle assembly, the inflow conduit of the probe coolant tube is continuous with the inflow conduit of the handle coolant tube and the outflow conduit of the probe coolant tube is continuous with the outflow conduit of the handle coolant tube. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An ablation instrument, comprising:
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a handle assembly including; a handle hypotube having a distal portion; a handle feedline extending longitudinally through the handle hypotube and configured to be coupled to an electrosurgical energy source, the handle feedline including; an outer conductor having a distal portion; and an inner conductor having a distal portion; and a handle coolant tube extending longitudinally between the handle hypotube and the outer conductor of the handle feedline to define an outflow conduit that extends longitudinally between the handle coolant tube and the handle hypotube and an inflow conduit that extends longitudinally between the handle coolant tube and the outer conductor, the handle coolant tube having a distal portion; and an ablation probe configured to detachably couple to the handle assembly, the ablation probe including; a probe hypotube having a proximal portion configured to form a fluid-tight seal with the distal portion of the handle hypotube; a probe feedline extending through the probe hypotube and including; an outer conductor having a proximal portion configured to be detachably coupled to the distal portion of the outer conductor of the handle feedline; and an inner conductor having a proximal portion configured to be detachably coupled to the distal portion of the inner conductor of the handle feedline; and a probe coolant tube extending longitudinally between the probe hypotube and the outer conductor of the probe feedline to define an outflow conduit that extends longitudinally between the probe coolant tube and the probe hypotube, and an inflow conduit that extends longitudinally between the probe coolant tube and the outer conductor of the probe feedline, the probe coolant tube having a proximal portion configured to detachably couple to the distal portion of the handle coolant tube and to selectively form a fluid-tight seal with the distal portion of the handle coolant tube such that, upon coupling of the ablation probe to the handle assembly, the inflow conduit of the probe coolant tube is continuous with the inflow conduit of the handle coolant tube and the outflow conduit of the probe coolant tube is continuous with the outflow conduit of the handle coolant tube. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification