Techniques for positioning therapy delivery elements within a spinal cord or brain
First Claim
1. A medical device for providing therapy to a body comprising:
- a lead having at least one therapy delivery element at a distal end of the lead;
a collar, the collar having outer threads and inner threads, wherein the collar is adapted to be screwed into the bone of the body using the outer threads; and
a threaded housing adapted so that at least a portion of the threaded housing is inserted into a channel defined by the collar, the treaded housing defining a proximal opening in a top portion of the threaded housing, a passageway through the threaded housing, and a distal opening, the proximal opening and passageway adapted to allow the therapy delivery element to be inserted therethrough and be positioned closer to the distal opening than the proximal opening.
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Abstract
Apparatus and techniques to address problems associated with lead migration, patient movement or position, histological changes, neural plasticity or disease progression. Disclosed are techniques for implanting a lead having therapy delivery elements, such as electrodes or drug delivery ports, within a vertebral or cranial bone so as to maintain these elements in a fixed position relative to a desired treatment site. The therapy delivery elements may thereafter be adjusted in situ with a position control mechanism and/or a position controller to improve the desired treatment, such as electrical stimulation and/or drug infusion to a precise target. The therapy delivery elements may be positioned laterally in any direction relative to the targeted treatment site or toward or away from the targeted treatment site. A control system maybe provided for open- or closed-loop feedback control of the position of the therapy delivery elements as well as other aspects of the treatment therapy.
30 Citations
18 Claims
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1. A medical device for providing therapy to a body comprising:
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a lead having at least one therapy delivery element at a distal end of the lead; a collar, the collar having outer threads and inner threads, wherein the collar is adapted to be screwed into the bone of the body using the outer threads; and a threaded housing adapted so that at least a portion of the threaded housing is inserted into a channel defined by the collar, the treaded housing defining a proximal opening in a top portion of the threaded housing, a passageway through the threaded housing, and a distal opening, the proximal opening and passageway adapted to allow the therapy delivery element to be inserted therethrough and be positioned closer to the distal opening than the proximal opening. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for providing treatment therapy to targeted tissue comprising the steps of:
- (a) implanting a therapy delivery device in a patient;
(b) implanting a collar into bone of a patient, the collar having outer and inner threads the other threads used to secure the collar into the bone of the patient;
(c) inserting a threaded housing into the collar, the threaded housing defining a proximal opening in a top portion of the housing, a passageway through the housing, and a distal opening;
(d) implanting a lead in the patient through the proximal opening and passageway of the threaded housing so that a therapy delivery element of the implanted lead lies closer to the distal opening than the proximal opening;
(e) coupling a proximal end of the lead to the implanted therapy delivery device; and
(f) operating the implanted therapy delivery device to provide treatment therapy to the targeted tissue via the therapy delivery element. - View Dependent Claims (15, 16)
- (a) implanting a therapy delivery device in a patient;
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17. A medical device for providing therapy to a body comprising:
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a plurality of leads, each lead having at least one therapy delivery element at a distal end of the lead; a plurality of collars, the plurality of collars having outer and inner threads, the plurality of collars configured to be screwed into bone of the body using the outer threads; a plurality of threaded housings configured such that at least a portion of the threaded housing is inserted into a channel defined by each of the plurality of collars, the plurality of threaded housings defining a proximal opening in a top portion of the threaded housings, a passageway through the threaded housings, and a distal opening, the proximal opening and passageway adapted to allow the therapy delivery element to be inserted therethrough and be positioned closer to the distal opening than the proximal opening; and a swivel mechanism connected to each of the plurality of threaded housings, the swivel mechanism configured to allow turning of the threaded inner housing without moving the plurality of leads. - View Dependent Claims (18)
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Specification