Systems for accessing nerves within bone
First Claim
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1. A method for channeling a path into bone to a treatment location in a body of a patient, comprising:
- selecting a set of treatment instruments out of a kit based on a diagnostic evaluation of the treatment location, the set of treatment instruments comprising an introducer, a curved cannula having a curvature selected based on the diagnostic evaluation, a channeling stylet, and a treatment device;
inserting the introducer into a region of the bone near the treatment location, the introducer having a central channel and an opening at a distal tip of the introducer;
delivering the curved cannula through said central channel of said introducer to said opening,extending the curved cannula past the opening at the distal tip of the introducer to generate a curved path in the bone;
inserting the channeling stylet into the curved cannula,creating a linear channel starting at a distal end of the curved path formed by the curved cannula by extending a distal end of the channeling stylet out of an open distal tip of the curved cannula;
removing the channeling stylet from the curved cannula; and
delivering the treatment device through said curved cannula to the treatment location through the linear channel.
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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
20 Claims
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1. A method for channeling a path into bone to a treatment location in a body of a patient, comprising:
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selecting a set of treatment instruments out of a kit based on a diagnostic evaluation of the treatment location, the set of treatment instruments comprising an introducer, a curved cannula having a curvature selected based on the diagnostic evaluation, a channeling stylet, and a treatment device; inserting the introducer into a region of the bone near the treatment location, the introducer having a central channel and an opening at a distal tip of the introducer; delivering the curved cannula through said central channel of said introducer to said opening, extending the curved cannula past the opening at the distal tip of the introducer to generate a curved path in the bone; inserting the channeling stylet into the curved cannula, creating a linear channel starting at a distal end of the curved path formed by the curved cannula by extending a distal end of the channeling stylet out of an open distal tip of the curved cannula; removing the channeling stylet from the curved cannula; and delivering the treatment device through said curved cannula to the treatment location through the linear channel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for channeling a path into vertebral bone to a treatment location in a body of a patient, comprising:
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selecting a set of treatment instruments out of a kit based on a particular spine segment within which the vertebral bone is located, the set of treatment instruments comprising an introducer, a curved cannula having a curvature selected based on the particular spine segment, a channeling stylet, and a treatment device; inserting the introducer through a cortical bone region and into a cancellous bone region of the vertebral bone near the treatment location, wherein the introducer has a central channel along its longitudinal axis and an axial opening at a distal tip of the introducer; delivering the curved cannula through said central channel of the introducer to the axial opening at the distal tip of the introducer; extending the curved cannula past the axial opening at the distal tip of the introducer to generate a curved path toward the treatment location, wherein the curved cannula is extended through at least a portion of the cancellous bone region to a location near the treatment location; creating a linear channel starting at a distal end of the curved path formed by the curved cannula by inserting the channeling stylet within the curved cannula and extending a distal end of the channeling stylet out of an open distal tip of the curved cannula; removing the channeling stylet from the curved cannula; delivering a treatment probe through a central passageway in the curved cannula to the treatment location through the linear channel. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification