Microwave tissue dissection and coagulation
First Claim
1. A surgical instrument, comprising:
- a handle;
a shaft defining a longitudinal axis and extending distally from the handle, the shaft including;
an outer hypotube;
a lumen coaxially-disposed within the hypotube and extending beyond a distal end thereof; and
a coaxial feedline coaxially-disposed within the lumen and having an inner conductor and an outer conductor disposed coaxially about the inner conductor; and
a dissecting head assembly coupled to a distal end of the shaft, the dissecting head assembly including;
a dielectric core having a substantially planar radiating surface and at least one non-radiating surface, the substantially planar radiating surface defining a plane that is substantially parallel to the longitudinal axis, wherein the inner conductor and the outer conductor of the coaxial feedline are disposed within the dielectric core;
a reflective coating disposed on the at least one non-radiating surface of the dielectric core; and
a blade extending from the substantially planar radiating surface.
5 Assignments
0 Petitions
Accused Products
Abstract
An surgical instrument configured to concurrently dissect and coagulate tissue. In an embodiment, the surgical instrument comprises a handle and a shaft extending distally from the handle. The shaft includes an outer hypotube, a lumen coaxially-disposed within the hypotube and extending beyond a distal end thereof, a coaxial feedline coaxially-disposed within the lumen, and having an inner conductor and an outer conductor disposed coaxially about the inner conductor, and a coolant tube coaxially-disposed between the lumen and the coaxial feedline to form an inflow conduit and an outflow conduit. The instrument further includes a dissecting head assembly coupled to a distal end of the shaft. The dissecting head assembly includes a dielectric core having a substantially planar radiating surface and at least one non-radiating surface, a reflective coating disposed on the at least one non-radiating surface of the dielectric core, and a blade extending from the radiating surface.
81 Citations
18 Claims
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1. A surgical instrument, comprising:
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a handle; a shaft defining a longitudinal axis and extending distally from the handle, the shaft including; an outer hypotube; a lumen coaxially-disposed within the hypotube and extending beyond a distal end thereof; and a coaxial feedline coaxially-disposed within the lumen and having an inner conductor and an outer conductor disposed coaxially about the inner conductor; and a dissecting head assembly coupled to a distal end of the shaft, the dissecting head assembly including; a dielectric core having a substantially planar radiating surface and at least one non-radiating surface, the substantially planar radiating surface defining a plane that is substantially parallel to the longitudinal axis, wherein the inner conductor and the outer conductor of the coaxial feedline are disposed within the dielectric core; a reflective coating disposed on the at least one non-radiating surface of the dielectric core; and a blade extending from the substantially planar radiating surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A surgical dissection and coagulation system, comprising:
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a source of microwave coagulation energy; a surgical instrument adapted to operably couple to the source of coagulation energy, the surgical instrument comprising; a handle; a shaft defining a longitudinal axis and extending distally from the handle, the shaft including; an outer hypotube; a lumen coaxially disposed within the hypotube and extending beyond a distal end thereof; and a coaxial feedline coaxially-disposed within the lumen and having an inner conductor and an outer conductor-disposed coaxially about the inner conductor; and a dissecting head assembly coupled to a distal end of the shaft, the dissecting head assembly including; a dielectric core having a substantially planar radiating surface and at least one non-radiating surface, the substantially planar radiating surface defining a plane that is substantially parallel to the longitudinal, wherein the inner conductor and the outer conductor of the coaxial feedline are disposed within the dielectric core; a reflective coating disposed on the at least one non-radiating surface of the dielectric core; and a blade extending from the substantially planar radiating surface. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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Specification