Modeling positions of implanted devices in a patient
AssigneeNevro Corporation
InventorBrett Wingeier
Life of this patent
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Abstract
Technology is disclosed for modeling positions of implanted devices in a patient. In various embodiments, the technology can construct a forward model that predicts an electrical impedance between electrical contacts; detects an actual electrical impedance between electrical contacts; computes a fitness value based on a comparison between the detected electrical impedance and the predicted electrical impedance; varies at least one parameter of the forward model until the computed fitness value is a maximum fitness value; and displays at a display device a estimated position of the first lead and/or second leads.
Claims24
A method for treating a patient, comprising:
- implanting a signal delivery device within a vertebral foramen of the patient, and positioning a first electrical contact carried by the signal delivery device to be within a specified distance of the target location;
- positioning a second electrical contact;
- detecting an electrical impedance between the first and the second electrical contacts;
- and
- computing a relative position of the second electrical contact based at least on the detected electrical impedance.
A computer-readable storage device storing computer-executable instructions, the instructions comprising:
- constructing a forward model that predicts an electrical impedance between at least two electrical contacts;
- detecting an actual electrical impedance between the electrical contacts;
- computing a fitness value based on a comparison between the detected electrical impedance and the predicted electrical impedance;
- varying at least one parameter of the forward model until the computed fitness value is a maximum fitness value;
- and
- rendering at a display device an estimated position of the first lead and/or the second lead.
A system for treating patients, comprising:
- a processor and memory;
- a forward model component;
- a fitness computer component;
- and
- an impedance detector component.
A system for treating a patient, comprising:
- means for receiving a target location from which to deliver a modulation signal to the patient's spinal cord;
- means for implanting a signal delivery device within a vertebral foramen of the patient, and positioning a first electrical contact carried by the signal delivery device to be within a specified distance of the target location, without the use of fluoroscopy;
- means for positioning a second electrical contact;
- means for detecting an electrical impedance at the first electrical contact;
- and
- means for computing a relative position of the second electrical contact based at least on the detected electrical impedance.
Dependencies are inferred from the claim text.