Systems and methods for turbinate reduction
First Claim
1. An electrosurgical apparatus for treating tissue at a target site comprising:
- an elongate housing having a longitudinal axis, and having a handle end and a distal portion;
an electrode support disposed on the housing distal portion;
the electrode support having an aspiration cavity with an opening; and
an active screen electrode disposed on the electrode support and covering the aspiration cavity opening, the active electrode having a plurality of apertures fluidly connected with the aspiration cavity; and
a return electrode disposed on the distal portion, the return electrode encircling at least a portion of the electrode support;
the aspiration cavity having a cavity ramp operable to direct the flow of any fluid, tissue and ablation byproducts disposed adjacent the cavity ramp in a proximal direction.
1 Assignment
0 Petitions
Accused Products
Abstract
The present disclosure includes an electrosurgical apparatus for treating tissue at a target site. The apparatus has a shaft with a proximal end and a distal portion, the distal portion comprising a return electrode and electrode support. There is also at least one active electrode on the shaft distal portion, which has a proximal portion and a distal portion and a plurality of aspiration apertures disposed therebetween. These apertures are fluidly connected to a fluid aspiration cavity that is located within the electrode support, and the cavity is connected with a fluid aspiration element that is located along the shaft. The plurality of apertures vary in size and are generally arranged so that the larger sized apertures are disposed towards the electrode proximal portion and the smaller sized apertures are generally located towards the electrode distal portion.
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Citations
31 Claims
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1. An electrosurgical apparatus for treating tissue at a target site comprising:
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an elongate housing having a longitudinal axis, and having a handle end and a distal portion; an electrode support disposed on the housing distal portion; the electrode support having an aspiration cavity with an opening; and an active screen electrode disposed on the electrode support and covering the aspiration cavity opening, the active electrode having a plurality of apertures fluidly connected with the aspiration cavity; and a return electrode disposed on the distal portion, the return electrode encircling at least a portion of the electrode support; the aspiration cavity having a cavity ramp operable to direct the flow of any fluid, tissue and ablation byproducts disposed adjacent the cavity ramp in a proximal direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An electrosurgical apparatus for treating tissue at a target site comprising:
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a shaft having a proximal end and a distal portion, the distal portion having a return electrode and an electrode support defining a fluid aspiration cavity within the electrode support; and an active electrode disposed on the electrode support, wherein the active electrode has a proximal portion and an electrode distal portion and a plurality of aspiration apertures through said active electrode, said plurality of aspiration apertures fluidly connected to the fluid aspiration cavity; the plurality of apertures having a first aperture, larger than all other aspiration apertures disposed on the active electrode the first aspiration aperture being disposed towards the proximal portion of the electrode and having an axis of symmetry that aligns with a longitudinal axis of the fluid aspiration cavity. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. An electrosurgical apparatus for removing tissue from a body structure comprising:
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a shaft having a proximal end, a distal portion, and a distal tip, the shaft distal portion having a tubular insulating support member with at least one recessed support shelf; a fluid supply disposed within the support member; at least one aspiration cavity disposed within said support member and adjacent the support shelf, and at least one flushing conduit disposed within the support member, the conduit having a first end disposed within the support member coupled to the fluid supply element and a second end disposed within the support member coupled to the at least one aspiration cavity; and a return electrode encircling at least a portion of the tubular support member; and an active electrode disposed on the recessed support shelf; wherein the return electrode has at least one discharge aperture disposed through said return electrode and fluidly connected with the fluid supply element, so that a portion of an electrically conductive fluid delivered through the supply element flows from the fluid supply element through at least one discharge aperture to an exterior surface of the distal portion and a portion of the fluid flows from the fluid supply element through the flushing conduit into the aspiration cavity. - View Dependent Claims (26, 27, 28, 29, 30, 31)
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Specification