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다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
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Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0020867 (2008-01-28) |
등록번호 | US-8192350 (2012-06-05) |
발명자 / 주소 |
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출원인 / 주소 |
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대리인 / 주소 |
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인용정보 | 피인용 횟수 : 3 인용 특허 : 1048 |
Methods and devices are provided for gathering impedance data related to implantable restriction devices. In general, the methods and devices can enable patients, health care providers, and others to use gathered data as a feedback mechanism to non-invasively monitor efficacy of an implantable restr
Methods and devices are provided for gathering impedance data related to implantable restriction devices. In general, the methods and devices can enable patients, health care providers, and others to use gathered data as a feedback mechanism to non-invasively monitor efficacy of an implantable restriction device in a patient and to identify, modify, and/or prescribe a treatment plan for the patient considering the gathered data. Impedance data can be gathered and analyzed for tissue proximate to the restriction device, e.g., a fat pad between a gastric band and the patient's stomach. Electrodes in contact with the tissue can measure an impedance of the tissue, with the impedance between the electrodes changing as the tissue reduces in size (e.g., as fat cells shrink) and/or changes configuration.
1. A restriction system for forming a restriction in a patient, comprising: an implantable restriction device configured to form a restriction in a patient;at least two sensor electrodes disposed on a tissue-contacting surface of the implantable restriction device; andan impedance measuring device c
1. A restriction system for forming a restriction in a patient, comprising: an implantable restriction device configured to form a restriction in a patient;at least two sensor electrodes disposed on a tissue-contacting surface of the implantable restriction device; andan impedance measuring device configured to be in electronic communication with the sensor electrodes and to measure an impedance between the sensor electrodes, wherein the impedance measuring device is configured to measure the impedance between the sensor electrodes over a period of time to gather a sequence of impedance values, and generate a plot line from the sequence of impedance values indicating a weight of the patient over the period of time. 2. The system of claim 1, wherein the implantable restriction device comprises an adjustable gastric band. 3. The system of claim 1, wherein the impedance measuring device is configured to compare an impedance measured between the sensor electrodes with a range of impedance values. 4. The system of claim 1, wherein the sensor electrodes are configured to be in contact with tissue proximate to the restriction formed by the implantable restriction device, and wherein the impedance measuring device is configured to measure the impedance of the tissue. 5. The system of claim 1, wherein the impedance measuring device is configured to signal for a corrective action if the impedance measuring device measures an impedance between the sensor electrodes that differs from a threshold impedance value. 6. The system of claim 5, wherein the threshold impedance value reflects a baseline amount of tissue proximate to the restriction formed by the implantable restriction device. 7. The system of claim 5, wherein a measured impedance value between the sensor electrodes that differs from a threshold impedance value indicates either patient weight loss or patient weight gain. 8. The system of claim 5, wherein the impedance measuring device is configured to determine if measured impedance values gathered over the period of time are each at a substantially constant value indicative of a weight loss plateau. 9. The system of claim 5, wherein the corrective action includes suggesting a change in pressure within the implantable restriction device. 10. The system of claim 5, wherein the corrective action includes suggesting a modification of the patient's treatment plan. 11. The system of claim 1, wherein the impedance measuring device is configured to determine a trend of patient weight loss if the plot line indicates an asymptotic decrease in the impedance over the period of time, and to determine that the trend is patient weight gain if the plot line indicates an asymptotic increase in the impedance over the period of time. 12. The system of 11, wherein the impedance measuring device is configured to detect a sudden increase between a one of the impedance values and an immediately preceding one of the impedance values, andtrigger an alert providing notice of the sudden increase. 13. The system of 12, further comprising a pressure sensor configured to sense a pressure of fluid within the implantable restriction device over the period of time and to communicate pressure data to the impedance measuring device, wherein the impedance measuring device is configured to analyze the pressure data to determine if the pressure of fluid increased at a time corresponding to the one of the impedance values and the immediately preceding one of the impedance values, and if so, to allow the alert to be triggered, and if not, to not trigger the alert. 14. The system of claim 1, wherein the period of time is a plurality of days. 15. A restriction system for forming a restriction in a patient, comprising: an implantable measuring device configured to be in communication with an implantable restriction device configured to form a restriction in a patient, and to gather data related to a weight of the patient, the measuring device including at least two sensor electrodes disposed on a tissue-contacting surface of the implantable restriction device; anda controller configured to be in electronic communication with the sensor electrodes and to measure an impedance between the sensor electrodes over a period of time to gather a sequence of impedance values, and configured to signal for an adjustment of the patient's treatment concerning the implantable restriction device if the gathered data indicates an inflection regarding the weight of the patient,wherein the controller is configured to signal for the adjustment of the patient's treatment concerning the implantable restriction device if the sequence of impedance values indicates an inflection in a trend of the weight of the patient over the period of time andwherein the controller is configured to determine that the trend is weight loss of the patient if the sequence of impedance values indicates an asymptotic decrease in the impedance over the period of time, and to determine that the trend is weight gain of the patient if the sequence of impedance values indicates an asymptotic increase in the impedance over the period of time. 16. The system of claim 15, wherein the sensor electrodes are configured to be in contact with tissue proximate to the restriction formed by the implantable restriction device, and wherein the impedance measuring device is configured to measure the impedance of the tissue. 17. The system of claim 16, wherein the controller is configured to signal for a change of fluid volume within the implantable restriction device if the measured impedance falls within a range of impedance values. 18. The system of claim 15, wherein the controller is configured to analyze the gathered data for an inflection in a plot line indicating a minimization of a fat pad of the patient. 19. The system of claim 15, further comprising a pressure sensor configured to sense a pressure of fluid within the implantable restriction device and to communicate pressure data to the controller, wherein the controller is configured to use the pressure data to corroborate an inflection regarding the weight of the patient and to signal for an adjustment of the patient's treatment if so corroborated. 20. The system of claim 15, wherein the signal for an adjustment of the patient's treatment includes a signal to adjust an amount of fluid within the implantable restriction device. 21. The system of claim 15, wherein the signal for an adjustment of the patient's treatment includes a signal to modify the patient's treatment plan. 22. The system of claim 15, wherein the period of time is a plurality of days.
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