Percutaneous treatment device and method
OwnerKevin L. MOSS, Cameron D. HINMAN +2inventors
InventorsKevin L. MOSS, Cameron D. HINMAN, Bryan DUENAS, David J. DANITZ
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Abstract
Described herein are percutaneous treatment tools and methods for applying electric treatment to a target tissue, hi some examples the treatment tools described herein allow for adjusting the spacing between the proximal electrode(s) and the distal electrode of the treatment tools. The treatment tools described herein may also be configured to reduce peak electric field for a given potential and/or to increase hoop stress on the tissue upon insertion of the tip to prevent or reduce arcing between the electrodes.
Claims26
-49. (canceled)
An apparatus for delivering a pulsed electric field, the apparatus comprising:
- a handle;
- an elongate shaft extending from the handle;
- and
- a tip region extending distally from the elongate shaft, the tip region comprising:
- a first electrode,
- a second electrode distal to the first electrode, wherein the second electrode has a hybrid configuration comprising a distal cutting region and a proximal non-cutting region,
- wherein the distal cutting region has one or more blade edges extending proximally and configured to cut tissue, and wherein the proximal non-cutting region has a smooth face extending proximally from a proximal end of each of the one or more blades and configured to stretch and expand tissue;
- and
- a spacer between the first electrode and the second electrode.
A method of treating a target tissue, the method comprising:
- inserting percutaneously a tip region of a treatment tool into the target tissue, the tip region comprising a first electrode and a second electrode;
- and
- applying a plurality of electrical pulses having a pulse duration of less than 1000 nanoseconds while reducing peak electric field for a given potential and/or increasing hoop stress on the target tissue to prevent or at least reduce arcing between the first electrode and the second electrode.
Dependencies are inferred from the claim text.