Radio frequency catheter to target ligamentum flavum
First Claim
1. A device for performing a surgical procedure comprising:
- an elongated shaft extending between a proximal end and a distal end and includes an outer surface and an inner surface, the inner surface defining a passageway;
a stylet configured for moveable disposal within the passageway of the elongated shaft and the stylet includes a blunt distal tip configured for disposal outside the distal end of the elongated shaft and to prevent damage to adjacent tissue;
an expandable member including a proximal end and a distal end comprising a ring-shaped member, wherein the expandable member comprises a plurality of elongated strips that are spaced apart from one another, the strips each comprising an inner surface having a proximal end that is fixed to the outer surface of the elongate shaft at the distal end of the elongated shaft and a distal end that engages an outer surface of the ring-shaped member, the ring-shaped member comprising an inner surface defining an opening, the blunt distal tip being positioned within the opening such that the blunt distal tip cannot pass through the opening to connect the expandable member to the stylet; and
at least one electrode disposed with the expandable member.
1 Assignment
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Accused Products
Abstract
A device for performing a surgical procedure comprising an elongated shaft extending between a proximal end and a distal end and including an outer surface and an inner surface, the inner surface defining a passageway. A stylet is configured for moveable disposal within the passageway of the elongated shaft. The stylet includes a blunt distal tip configured for disposal outside the distal end of the elongated shaft and to prevent damage to adjacent tissue. An expandable member includes a proximal end and a distal end. The proximal end of the expandable member is disposed with the distal end of the elongated shaft and the distal end of the expandable member is connected to the distal end of the stylet. At least one electrode disposed with the expandable member.
36 Citations
19 Claims
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1. A device for performing a surgical procedure comprising:
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an elongated shaft extending between a proximal end and a distal end and includes an outer surface and an inner surface, the inner surface defining a passageway; a stylet configured for moveable disposal within the passageway of the elongated shaft and the stylet includes a blunt distal tip configured for disposal outside the distal end of the elongated shaft and to prevent damage to adjacent tissue; an expandable member including a proximal end and a distal end comprising a ring-shaped member, wherein the expandable member comprises a plurality of elongated strips that are spaced apart from one another, the strips each comprising an inner surface having a proximal end that is fixed to the outer surface of the elongate shaft at the distal end of the elongated shaft and a distal end that engages an outer surface of the ring-shaped member, the ring-shaped member comprising an inner surface defining an opening, the blunt distal tip being positioned within the opening such that the blunt distal tip cannot pass through the opening to connect the expandable member to the stylet; and at least one electrode disposed with the expandable member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A device for ablating tissue comprising:
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a cannula extending between a proximal end and a distal end and includes an outer surface and an inner surface, the inner surface defining a passageway; a stylet configured for moveable disposal within the passageway of the cannula and the stylet includes a blunt distal tip configured for disposal outside the distal end of the cannula and to prevent damage to adjacent tissue; an expandable cage including a proximal end and a distal end comprising a ring-shaped member, wherein the expandable cage comprises a plurality of elongated strips that are spaced apart from one another, the strips each comprising an inner surface having a proximal end that is fixed to the outer surface of the cannula at the distal end of the cannula and a distal end that engages an outer surface of the ring-shaped member, the ring-shaped member comprising an inner surface defining an opening, the blurt distal tip being positioned within the opening such that the blunt distal tip cannot pass through the opening to connect the expandable cage to the stylet; and at least one RF electrode disposed with the expandable cage. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A method for ablating tissue at a surgical site comprising:
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providing a device comprising; a cannula extending between a proximal end and a distal end and includes an outer surface and an inner surface, the inner surface defining a passageway; a stylet configured for moveable disposal within the passageway of the cannula and the stylet includes a blunt distal tip configured for disposal outside the distal end of the cannula and to prevent damage to adjacent tissue; an expandable cage including a proximal end and a distal end comprising a ring-shaped member, wherein the expandable cage comprises a plurality of elongated strips that are spaced apart from one another, the strips each comprising an inner surface having a proximal end that is fixed to the outer surface of the cannula at the distal end of the cannula and a distal end that engages an outer surface of the ring-shaped member, the ring-shaped member comprising an inner surface defining an opening, the blunt distal tip being positioned within the opening such that the blunt distal tip cannot pass through the opening to connect the expandable cage to the stylet; and at least one RF electrode disposed with the expandable cage;
creating an access path to the surgical site;inserting the expandable cage into the surgical site and extending the stylet to expand the expandable cage; and emitting RF signals through the at least one RF electrode to thermally ablate tissue. - View Dependent Claims (19)
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Specification