Implantable lead affixation structure for nerve stimulation to alleviate bladder dysfunction and other indication

A method of anchoring an implanted neurostimulation lead of a neurostimulation system in a patient, the method comprising:

• providing a neurostimulation lead having one or more neurostimulation electrodes and a plurality of tines extending outwardly from a leady body of the lead;
• advancing the lead through a tissue of a patient to a target location while the plurality of tines are folded inward toward the lead body constrained by a sheath;
• resiliently deploying the plurality of tines to a deployed configuration extended laterally outward from the lead body by withdrawing the sheath;
• coupling neurostimulation lead to a pulse generator;
• and
• anchoring the neurostimulation lead at the target location by engaging the plurality of tines in the deployed configuration against adjacent tissues thereby inhibiting axial movement of the implanted lead and relieving strain within a proximal portion of the lead proximal of the one or more neurostimulation electrodes with a strain relief member comprising a helical element wrapped along the proximal portion of the lead adjacent a junction of the neurostimulation lead and the pulse generator.

A method of anchoring an implanted neurostimulation lead of a neurostimulation system in a patient, the method comprising:

• providing a neurostimulation lead having one or more neurostimulation electrodes and an anchor proximal the one or more electrodes, wherein the anchor includes a helical body wrapped along a length of the lead and a plurality of tines attached to the helical body;
• advancing the lead through a tissue of a patient to a target location while the plurality of tines are folded inward toward the lead body;
• resiliently deploying the plurality of tines to a deployed configuration extended laterally outward from the helical body by twisting the lead body in one direction, the plurality of tines being configured to fold inward along a helical or inclined axis;
• and
• anchoring the neurostimulation lead at the target location by engaging the plurality of tines in the deployed configuration against adjacent tissues thereby inhibiting axial movement of the implanted lead.

A method of anchoring an implanted neurostimulation lead of a neurostimulation system in a patient, the method comprising:

• providing a neurostimulation lead having one or more neurostimulation electrodes and an anchor proximal the one or more electrodes, wherein the anchor includes a helical body wrapped along a length of the lead and a plurality of tines attached to the helical body;
• advancing the lead through a tissue of a patient to a target location while the plurality of tines are folded inward toward the lead body;
• resiliently deploying the plurality of tines to a deployed configuration extended laterally outward from the helical body;
• and
• removing the lead after deployment of the anchor by retracting the plurality of tines from a deployed configuration by twisting the lead body in one direction, the plurality of tines being configured to fold inward along a helical or inclined axis.