# US 2018/0021048 A1 · Nerve modulation systems

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- Number: US 2018/0021048 A1
- Document ID: US20180021048A1
- Status: Published application
- Kind: A1
- Application number: 15/669,399
- Filed: 2017-08-04
- Published: 2018-01-25
- Earliest claimed: 2008-09-26
- Assignees: Relievant Medsystems, Inc.
- Applicants: Relievant Medsystems, Inc.
- Inventors: Richard C. Pellegrino; Samit Patel; Harold Carrison
- Web page: https://patentgrep.com/patent/US20180021048A1

## CPC

- A61B 17/1642: {for producing a curved bore}
- A61B 17/1671: {for the spine}
- A61B 17/3403: {Needle locating or guiding means}
- A61B 17/3421: {Cannulas}
- A61B 17/3468: {for implanting or removing devices, e.g. prostheses, implants, seeds, wires (devices for implanting seeds A61M37/0069)}
- A61B 17/3472: {for bones, e.g. intraosseus injections}
- A61B 18/148: {having a short, rigid shaft for accessing the inner body transcutaneously, e.g. for neurosurgery or arthroscopy}
- A61B 18/1487: {Trocar-like, i.e. devices producing an enlarged transcutaneous opening}
- A61B 17/3423: {Access ports, e.g. toroid shape introducers for instruments or hands (access sites for liquids A61M39/0247)}
- A61B 18/1206: {Generators therefor}
- A61B 2017/00314: {Separate linked members}
- A61B 2017/00323: {Cables or rods}
- A61B 2017/00331: {with preformed bends}
- A61B 2017/3405: {using mechanical guide means}
- A61B 2018/00339: {Spine, e.g. intervertebral disc}
- A61B 2018/0044: {Spinal cord}
- A61B 2018/00565: {Bone}
- A61B 2018/00577: {Ablation}
- A61B 2018/126: {bipolar}
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)

## 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.

## Claims

### Claim 1

A system for channeling a path into bone, comprising:
a trocar having a central channel and opening at its distal tip; and
a curved cannula sized to be received in said central channel and delivered to said distal opening;
the curved cannula having a deflectable tip with a preformed curve such that the tip straightens while being delivered through the trocar and regains its preformed curve upon exiting and extending past the distal opening of the trocar to generate a curved path in the bone corresponding to the preformed curve of the deflectable tip;
wherein the curved 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.