Remotely powered remotely adjustable gastric band system

摘要

A remotely adjustable remotely power gastric band system may include a control device, an implant electronic device, and an implantable gastric band. The control device may telemetrically power and communicate with the implant electronic device, which may be used for adjusting the diameter of the implantable gastric band. The implant electronic device may store the gastric band adjustment history records of a patient and regulate the power received from the control device. To improve transmission efficiency, the implant electronic device may adopt a double modulation scheme for communicating with the control device. Furthermore, the implant electronic device may detect and resolve motor blockage issues related to the implantable gastric band.

主权项

1. A remotely powered and remotely adjustable gastric band system, comprising:
a remote control device configured to transmit a telemetric signal having an amplitude and a carrier frequency, wherein a magnitude of the amplitude of the telemetric signal varies to adjust a transmitted power of the telemetric signal in response to a telemetric feedback signal received by the remote control device; an implantable power device telemetrically coupled to the remote control device, and configured to convert the transmitted power of the telemetric signal and to generate the telemetric feedback signal in response to the implantable power device sensing that the converted power exceeds a predetermined threshold, the telemetric feedback signal having a message frequency based on a difference between the converted power and the threshold; and a gastric band for forming a ventral ring surface around a stomach of a patient, the gastric band coupled to the implantable power device, and configured to receive at least a portion of the converted power from the implantable power device and adjust the ventral ring surface in response to the telemetric signal transmitted from the remote control device.