US 2014/0236144 A1Published application

Intravertebral tissue ablation device and method

AssigneeCareFusion 2200, Inc.

InventorsJohn A. Krueger, Evan D. Linderman, David A. Schechter, Michael P. Hogan, Michael C. Moses, Joshua K. Goetz, Nathan H. White

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Abstract

A tissue ablation device is provided for use in soft tissue and/or in bone. It is configured to include an inner probe with a first electrode and a second electrode and an outer needle through which the inner probe extends. After the inner probe is directed therewithin to a target, the outer needle can be withdrawn to expose space between the first and second electrodes to form an RF or other energy field for tissue ablation therebetween upon actuation of an energy source. Such embodiments may include methods for tissue ablation and placement of stabilizing materials.

Claims20

Dependent claims

A tissue ablation needle system, comprising:

a rigid elongate guide cannula including an open proximal end, an open distal end, and a guide cannula lumen connecting therebetween;
an elongate needle cannula that circumferentially defines a needle lumen;
an elongate inner probe disposed through the needle lumen and configured to provide a distal needle tip of the needle cannula, where a probe distal end region includes a first electrode member;
an electroinsulative layer disposed between the needle cannula and the first electrode;
where at least one of the inner probe and the needle cannula is slidable relative to the other such that the inner probe extends through and beyond a distal needle cannula end;
and
where the needle cannula is longer than the guide cannula such that the needle cannula distal region can be extended through and beyond a distal guide cannula end, released thereby from guide cannula lumen restraint.

4 more elements

Dependencies are inferred from the claim text.