SYSTEMS FOR ACCESSING NERVES WITHIN BONE
First Claim
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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 allow a treatment device to be delivered through the central passageway to a location beyond the curved path.
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Abstract
System and methods are shown having a tube-within-tube assembly with a deployable curved deflectable tube or cannula that deploys from a straight cannula or trocar. The curved cannula has pre-curved distal end to create an angular range of 0° to 180° when fully deployed from the straight trocar. The curve is configured such that the flexible element carrying a treatment device can navigate through the angular range of deployment of the curved cannula. The curved cannula allows the flexible element to navigate through a curve within bone without veering off towards an unintended direction.
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Citations
1 Claim
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1. A system for channeling a path into bone, comprising:
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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 allow a treatment device to be delivered through the central passageway to a location beyond the curved path.
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Specification