| 摘要 |
A method for detecting at least partial medical device disengagement from a patient includes inserting the device in the patient so a Hall effect sensor connected to the device is positioned at an initial location substantially proximate to one of a plurality of magnetically charged components. Each of the components is removably attached to the patient, and is positioned a predetermined distance from another component. A magnetic field indicative of the one of the plurality of magnetically charged components is detected with the sensor. The sensor monitors for a failure to detect the magnetic field. In response to the failure detection, the sensor monitors for a subsequent detection of another magnetic field indicative of another of the plurality of magnetically charged components. The subsequent detection is associated with movement of the medical device substantially equal to the predetermined distance between the one and the other of the components.
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