Closed loop gastric restriction devices and methods
First Claim
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1. A system to treat an obese patient comprising:
- a) an adjustable implantable restriction device comprising a volume of fluid;
b) an implantable pressure sensor adapted to measure changes in fluid pressure within the restriction device, the fluid pressure changes related to patient ingestion of food which passes through the lumen of the stomach of the patient;
c) memory adapted to store information related to ingestion of food by the patient; and
d) a gain control which modifies the relationship between an input signal from the pressure sensor and an output signal, based on the information related to ingestion of food by the patient, wherein the input signal is related to food passing through the restriction device.
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Abstract
In some embodiments, methods to sense parameters associated with restriction procedures and/or devices are disclosed. In some embodiments, the parameters are sensed directly from the region of the procedure and/or device and in other embodiments, associated neural pathways are sensed. Methods for further optimization of the obesity treatment regimens are also disclosed.
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Citations
14 Claims
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1. A system to treat an obese patient comprising:
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a) an adjustable implantable restriction device comprising a volume of fluid; b) an implantable pressure sensor adapted to measure changes in fluid pressure within the restriction device, the fluid pressure changes related to patient ingestion of food which passes through the lumen of the stomach of the patient; c) memory adapted to store information related to ingestion of food by the patient; and d) a gain control which modifies the relationship between an input signal from the pressure sensor and an output signal, based on the information related to ingestion of food by the patient, wherein the input signal is related to food passing through the restriction device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of monitoring an adjustable restriction device in a patient comprising:
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a) detecting pressure changes in the restriction device as a bolus of food passes through the stomach; b) recording at least one of;
the degree of pressure change with time of the food bolus, consistency of the food bolus, frequency of meals, and meal volume; andc) automatically changing the volume within the adjustable restriction device in a predetermined manner based on the recording.
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14. A method of monitoring an adjustable restriction device in a patient comprising:
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a) detecting pressure changes in the restriction device as a bolus of food passes through the stomach; b) recording at least one of;
the degree of pressure change with time of the food bolus, consistency of the food bolus, frequency of meals, and meal volume;c) activating an electrical stimulator based on the recording wherein the electrical stimulator output is related to the pre-set relationship between the electrical stimulator and the recording, wherein the pre-set relationship is based on previously recorded data from step (b); and d) changing from outside the patient the pre-set relationship between the electrical stimulator and the pressure recording.
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Specification