Methods of treating nerves within bone using fluid
First Claim
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1. A method of treating a nerve within bone, comprising:
- inserting an introducer into a region of the bone near a treatment location, the introducer having a central channel and an opening at a distal tip of the introducer;
delivering a curved cannula through said central channel of said introducer to said opening,wherein the curved cannula comprises a deflectable distal tip having a preformed curve such that the deflectable distal tip straightens while being delivered through the introducer and transitions to a curved configuration upon exiting the introducer,wherein the deflectable distal tip of the curved cannula is configured to arc to an angle between 5 degrees and 110 degrees within the region of the bone,wherein a proximal portion of the curved cannula comprises a locking nut to control advancement of the curved cannula with respect to the introducer;
extending the curved cannula past the opening at the distal tip of the introducer to generate a curved path in the bone corresponding to the preformed curve of the deflectable distal tip;
advancing a fluid delivery catheter through said curved cannula to the treatment location;
advancing a straight flexible channeling stylet through the curved cannula to form a linear path beyond the curved path in the bone and removing the straight, flexible channeling stylet prior to advancing the fluid delivery catheter through the curved cannula,wherein said advancing the fluid delivery catheter through said curved cannula to the treatment location comprises advancing a distal tip of the fluid delivery catheter along the linear path; and
ablating the nerve at the treatment location by delivering fluid to the treatment location using the fluid delivery catheter.
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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 of treating a nerve within bone, comprising:
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inserting an introducer into a region of the bone near a treatment location, the introducer having a central channel and an opening at a distal tip of the introducer; delivering a curved cannula through said central channel of said introducer to said opening, wherein the curved cannula comprises a deflectable distal tip having a preformed curve such that the deflectable distal tip straightens while being delivered through the introducer and transitions to a curved configuration upon exiting the introducer, wherein the deflectable distal tip of the curved cannula is configured to arc to an angle between 5 degrees and 110 degrees within the region of the bone, wherein a proximal portion of the curved cannula comprises a locking nut to control advancement of the curved cannula with respect to the introducer; extending the curved cannula past the opening at the distal tip of the introducer to generate a curved path in the bone corresponding to the preformed curve of the deflectable distal tip; advancing a fluid delivery catheter through said curved cannula to the treatment location; advancing a straight flexible channeling stylet through the curved cannula to form a linear path beyond the curved path in the bone and removing the straight, flexible channeling stylet prior to advancing the fluid delivery catheter through the curved cannula, wherein said advancing the fluid delivery catheter through said curved cannula to the treatment location comprises advancing a distal tip of the fluid delivery catheter along the linear path; and ablating the nerve at the treatment location by delivering fluid to the treatment location using the fluid delivery catheter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of treating a nerve within bone, comprising:
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inserting an introducer into a cancellous region of the bone, the introducer having a central channel and an opening at a distal tip of the introducer; delivering a curved cannula through said central channel of said introducer to said opening, wherein the curved cannula comprises a deflectable distal tip having a preformed curve such that the deflectable distal tip straightens while being delivered through the introducer and transitions to a curved configuration upon exiting the introducer, wherein the deflectable distal tip of the curved cannula is configured to arc to an angle between 5 degrees and 110 degrees within the cancellous region of the bone, wherein a proximal portion of the curved cannula comprises a locking nut to control advancement of the curved cannula with respect to the introducer; extending the curved cannula past the opening at the distal tip of the introducer to generate a curved path in the bone corresponding to the preformed curve of the deflectable distal tip; advancing a fluid delivery treatment device through said curved cannula to a treatment location; advancing a straight, flexible channeling stylet through the curved cannula to form a linear path beyond the curved path in the bone and removing the straight, flexible channeling stylet prior to advancing the fluid delivery treatment device through the curved cannula, wherein said advancing the fluid delivery treatment device through said curved cannula to the treatment location comprises advancing a distal tip of the fluid delivery treatment device along the linear path; and treating the nerve at the treatment location within the cancellous region of bone by delivering fluid to the treatment location using the fluid delivery treatment device. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A method of treating a nerve within bone, comprising:
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inserting a first stylet through a central channel of a cannula and advancing the first stylet to a position in which a distal tip of the first stylet extends to or beyond an open distal tip of the cannula, wherein the cannula comprises a deflectable distal tip having a preformed curve, wherein the first stylet has a preformed curve corresponding to the preformed curve of the cannula; inserting the cannula and the first stylet together into a cancellous region of a vertebral body to form a curved path within the cancellous region toward a treatment location, wherein a proximal portion of the cannula comprises a locking nut to control advancement of the cannula, wherein the deflectable distal tip of the cannula and the distal tip of the first stylet are configured to arc to an angle between 5 degrees and 110 degrees within the cancellous region; removing said first stylet from the cannula; advancing a fluid delivery device through the central channel of the cannula to the treatment location; advancing a straight, flexible channeling stylet through the cannula to form a linear path beyond the curved path within the cancellous region and removing the straight, flexible channeling stylet prior to advancing the fluid delivery device through the cannula, wherein said advancing the fluid delivery device through the cannula to the treatment location comprises advancing a distal tip of the fluid delivery device along the linear path; and treating the nerve at the treatment location within the cancellous region of the vertebral body by delivering fluid to the treatment location using the fluid delivery device. - View Dependent Claims (19, 20)
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Specification