Implantable medical lead with threaded fixation
First Claim
1. A medical lead comprising:
- an elongated member having a proximal end and a distal end;
at least one stimulation electrode disposed closer to the distal end of the lead than the proximal end of the lead; and
at least one threaded structure extending around a portion of an outer surface of the elongated member and configured to engage tissue within a patient to resist migration of the medical lead.
1 Assignment
0 Petitions
Accused Products
Abstract
The disclosure is directed to securing electrodes of a medical lead adjacent to a target tissue site. The medical lead may include one or more threaded fixation structures disposed circumferentially about the outer surface of the lead body, or elongated member, that resembles a “screw” or “auger.” During implantation, a clinician may rotate the entire lead to “screw” the lead into the tissue of the patient until electrodes of the lead reside adjacent to a target tissue. In this manner, the threaded fixation structure secures the lead within the patient to resist lead migration and improper therapy and provide a fine adjustment for depth of placement. The threaded fixation structure may be disposed on a portion of the lead proximal to or distal to the electrodes of the lead or over the portion of the lead that includes the electrodes.
222 Citations
34 Claims
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1. A medical lead comprising:
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an elongated member having a proximal end and a distal end; at least one stimulation electrode disposed closer to the distal end of the lead than the proximal end of the lead; and at least one threaded structure extending around a portion of an outer surface of the elongated member and configured to engage tissue within a patient to resist migration of the medical lead. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method comprising:
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inserting a medical lead into a patient, wherein the lead comprises at least one stimulation electrode and at least one threaded fixation structure extending around a portion of an outer surface of the lead; and rotating the lead to engage the threaded fixation structure with tissue of the patient to resist migration of the lead. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A system comprising:
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a medical lead comprising; an elongated member having a proximal end and a distal end; at least one stimulation electrode disposed closer to the distal end of the lead than the proximal end of the lead; and at least one threaded structure extending around a portion of an outer surface of the elongated member and configured to engage tissue within a patient to resist migration of the medical lead; and a stimulator that delivers electrical stimulation therapy to a patient via the medical lead within the patient.
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24. An apparatus comprising:
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an elongated member having a proximal end and a distal end; a conduit disposed within the elongated member; an exit port disposed on an outer surface of the elongated member in fluidic communication with the conduit; and at least one threaded fixation structure extending around a portion of an outer surface of the elongated member and configured to engage tissue within a patient to resist migration of the medical lead. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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Specification