Intraosseous nerve modulation methods

Patent metadata

Field	Value
Publication number	US-2016278791-A1
Application number	US-201514928037-A
Country	US
Kind code	A1
Filing date	Oct 30, 2015
Priority date	Sep 26, 2008
Publication date	Sep 29, 2016
Grant date	—

Abstract

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.

First claim

1 . (canceled)

2 . A kit for therapeutically treating multiple targeted regions in a spine, the kit including:
a trocar having a central channel and an opening at a distal tip of the trocar; and a set of cannulas sized to be received in said central channel of the trocar and delivered to said opening at the distal tip of the trocar; each cannula of the set of cannulas comprising a deflectable distal end portion with a preformed curve such that the deflectable distal end portion straightens while being delivered through the central channel of the trocar and transitions to a curved configuration upon exiting and extending past the opening at the distal tip of the trocar to generate a curved path in a vertebral body corresponding to the curved configuration of the deflectable distal end portion; wherein each cannula of the set of cannulas comprises a central passageway having a diameter configured to allow a radiofrequency energy delivery probe to be delivered through the central passageway to a location beyond the curved path; and wherein the deflectable distal end portion of each cannula of the set of cannulas has a different preformed curvature.

3 . The kit of claim 2 , wherein the deflectable distal end portion of each cannula of the set of cannulas has a varying preformed radius of curvature.

4 . The kit of claim 2 , wherein the deflectable distal end portion of each cannula of the set of cannulas terminates at a different angle with respect to the central channel of the trocar.

5 . The kit of claim 4 , wherein the angle of the deflectable distal end portion with respect to the central channel of the trocar varies from approximately 45° to approximately 110°.

6 . The kit of claim 2 , further comprising a straight stylet configured to be installed in the trocar; the straight stylet comprising a sharp distal tip that is configured to extend beyond the distal opening of the trocar to pierce the vertebral body as the trocar is being delivered within the vertebral body.

7 . The kit of claim 2 , further comprising a set of curved stylets having an outer radius sized to fit within the central passageway of a corresponding cannula of the set of cannulas.

8 . The kit of claim 7 , wherein each curved stylet is configured to be installed in the corresponding cannula while the cannula is extended past the opening at the distal tip of the trocar.

9 . The kit of claim 8 , wherein each curved stylet is configured to block a distal opening of the corresponding cannula while being delivered into the vertebral body.

10 . The kit of claim 9 , wherein each curved stylet has a varying curved distal end corresponding to the curve of the corresponding cannula.

11 . The kit of claim 10 , wherein the curved stylet and the corresponding cannula have mating proximal ends that align the curved distal end of the curved stylet with the curve of the corresponding cannula.

12 . The kit of claim 2 , further comprising the radiofrequency energy delivery probe.

13 . The kit of claim 12 , wherein the radiofrequency energy delivery probe comprises a pair of bipolar radiofrequency electrodes.

14 . A kit for therapeutically treating multiple targeted regions in a spine, the kit including:
an introducer having a central channel and an opening at a distal tip of the introducer; and a plurality of cannulas sized to be received in said central channel of the introducer and delivered to said opening at the distal tip of the introducer; each cannula comprising a deflectable distal end portion having a preformed curve such that the deflectable distal end portion straightens while being delivered through the central channel of the introducer and transitions to a curved configuration upon exiting and extending past the opening at the distal tip of the introducer to generate a curved path in a vertebral body corresponding to the curved configuration of the deflectable distal end portion of the cannula; wherein each cannula comprises 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; and wherein the deflectable distal end portion of each cannula has a different preformed curvature.

15 . The kit of claim 14 , wherein the deflectable distal end portion of each cannula of the plurality of cannulas has a varying preformed radius of curvature.

16 . The kit of claim 14 , wherein the deflectable distal end portion of each cannula of the plurality of cannulas terminate at varying angles with respect to the central channel of the introducer.

17 . The kit of claim 14 , wherein the angle of the deflectable distal end portions with respect to the central channel of the introducer varies from approximately 45° to approximately 110°.

18 . The kit of claim 14 , further comprising a straight stylet configured to be inserted though the central channel of the introducer.

19 . The kit of claim 18 , wherein the straight stylet comprises a sharp distal tip that is configured to extend beyond the opening at the distal tip of the introducer to pierce the vertebral body as the introducer is being delivered within the vertebral body.

20 . The kit of claim 14 , wherein the treatment device comprises a radiofrequency energy delivery device.

21 . The kit of claim 20 , wherein the radiofrequency energy delivery device comprises a tip electrode and a ring electrode spaced apart from the tip electrode.

Assignees

• Relievant Medsystems Inc

Inventors

• Pellegrino Richard
• Patel Samit
• Carrison Harold

Classifications

• A61B17/1642 Primary

  for producing a curved bore · CPC title

• A61B17/3403

  Needle locating or guiding means · CPC title

• A61B18/1487

  Trocar-like, i.e. devices producing an enlarged transcutaneous opening · CPC title

• A61B17/3421

  Cannulas · CPC title

• A61B17/1671

  for the spine · CPC title