Method and tools for implanted device

摘要

A method and toolset capable of remotely moving a rotor of an implanted device in a first arcuate direction and detecting a first limit of travel, moving the rotor in a second, opposite direction and detecting a second limit of travel without altering the current performance setting of the implanted device, comparing the first and second limits of travel with known values for a plurality of selectable performance settings, and indicating the current performance setting of the implanted device.

主权项

1. A method of positioning a toolset on the exterior of a patient relative to a magnetically adjustable device implanted in the patient, the implanted device including a rotor having an axis of rotation and at least one rotor magnet, the rotor having a range of arcuate motion within each of a plurality of selectable performance settings without altering a selected performance setting for the implanted device, the rotor defining a plurality of radially flat cam surfaces, each cam surface occupying an arc about the axis of rotation, and wherein the rotor is disposed at a first location in a casing of the implanted device and has an axle which turns about the axis of rotation, the method comprising:
estimating a location on the exterior of the patient above the implanted device; moving the toolset to the estimated location; detecting the location of at least one of a maximum positive pole value and a maximum negative pole value of the rotor magnet at a current performance setting; moving the toolset relative to the at least one detected maximum pole value; moving the rotor in a first arcuate direction and detecting a first limit of travel without altering the current performance setting; moving the rotor in a second, opposite direction and detecting a second limit of travel without altering the current performance setting; comparing the first and second limits of travel with known values for the plurality of selectable performance settings; and indicating the current performance setting of the implanted device.