Nerve modulation systems

摘要

System and methods for channeling a path into bone include a trocar having a proximal end, distal end and a central channel disposed along a central axis of the trocar. The trocar includes a distal opening at the distal end of the trocar. The system includes a curved cannula sized to be received in the central channel, the curved cannula comprising a curved distal end configured to be extended outward from the distal opening to generate a curved path extending away from the trocar. The curved cannula has a central passageway having a diameter configured to allow a treatment device to be delivered through the central passageway to a location beyond the curved path.

主权项

1. A system for generating a path to a target treatment site within a vertebral body, the system comprising:
an introducer assembly comprising an introducer having a lumen and a first straight stylet; a curved cannula assembly comprising a cannula and a curved stylet; a second straight stylet; and a bipolar radiofrequency (“RF”) energy delivery device having two electrodes configured to deliver energy to the target treatment site, wherein the first straight stylet is configured for insertion into the lumen of the introducer such that a distal tip of the first straight stylet extends beyond an open distal tip of the introducer, wherein the cannula comprises an internal passageway and a first alignment member at a proximal portion of the cannula, wherein the cannula is configured to be inserted within the lumen of the introducer upon removal of the first straight stylet, wherein a distal portion of the cannula is configured to curve to correspond to a curved distal portion of the curved stylet upon insertion of the curved stylet within the internal passageway of the cannula and advancement of a distal tip of the curved stylet to an open distal tip of the cannula, wherein the curved stylet comprises a second alignment member configured to be aligned with the first alignment member of the cannula to facilitate proper alignment of corresponding curved distal portions of the cannula and the curved stylet, wherein the curved cannula assembly is configured to form a curved path toward the target treatment site within an inner cancellous bone region of the vertebral body; wherein the second straight stylet comprises a flexible channeling stylet configured to be inserted within the internal passageway of the cannula upon removal of the curved stylet, wherein a distal portion of the second straight stylet is configured to be advanced out of the open distal tip of the cannula to form a linear path beyond the curved path, wherein the bipolar RF energy delivery device is configured to be inserted within the internal passageway of the cannula upon removal of the second straight stylet, and wherein the energy delivered by the bipolar RF energy delivery device is configured to heat the target treatment site sufficient to denervate a basivertebral nerve at the target treatment site.