Implantable monitoring probe
First Claim
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1. A method of attaching a device to a tissue surface inside of a patient, comprising the steps of:
- providing a device having a housing, a concavity on the housing, a window to permit visualization through the housing of the interior of the concavity, and a pin which is axially movable from a retracted position within the housing to an extended position which extends at least part way across the concavity;
carrying the device on an introduction instrument into the body;
positioning the device at an attachment site in the body such that the concavity is adjacent the tissue surface at the attachment site;
drawing tissue into the concavity;
visualizing tissue within the concavity through the window, and advancing the pin through the tissue to retain the device at the attachment site.
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Abstract
Disclosed is an ambulatory system for monitoring one or more physiological parameters in a body lumen, such as the esophagus. The system includes an implantable probe having a sensor for the physiological parameter and a transmitter for transmitting data to an external receiver. The probe may be used for monitoring any of various physiological parameters, including pH, temperature, and pressure, within the esophagus or other body lumens. Methods and deployment catheters are also disclosed.
199 Citations
54 Claims
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1. A method of attaching a device to a tissue surface inside of a patient, comprising the steps of:
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providing a device having a housing, a concavity on the housing, a window to permit visualization through the housing of the interior of the concavity, and a pin which is axially movable from a retracted position within the housing to an extended position which extends at least part way across the concavity;
carrying the device on an introduction instrument into the body;
positioning the device at an attachment site in the body such that the concavity is adjacent the tissue surface at the attachment site;
drawing tissue into the concavity;
visualizing tissue within the concavity through the window, and advancing the pin through the tissue to retain the device at the attachment site. - View Dependent Claims (2, 3, 4, 5)
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6. A method of attaching a device to a tissue surface inside of a patient, comprising the steps of:
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providing a device having a housing, a concavity on the housing, and a pin which is axially movable from a retracted position within the housing to an extended position which extends at least part way across the concavity;
carrying the device on an introduction instrument into the body;
positioning the device at an attachment site in the body such that the concavity is adjacent the tissue surface at the attachment site;
drawing tissue into the concavity; and
advancing the pin through the tissue to retain the device at the attachment site. - View Dependent Claims (7, 8, 9)
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10. A monitoring device for monitoring at least one physiological parameter at an attachment site in a body, comprising:
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a housing, having a tissue attachment surface;
a pin which is movable from a retracted position to allow the tissue attachment surface to be brought into contact with tissue at a preselected attachment site, and an extended position in which it extends through tissue in contact with the attachment surface; and
at least one physiological parameter detector carried by the housing. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A method of remotely monitoring a physiological parameter in a body lumen of a patient, comprising the steps of:
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providing a device having a housing, a physiological parameter detector in the housing, a concavity on the housing, and a pin which is axially movable from a retracted position within the housing to an extended position which extends at least part way across the concavity;
carrying the device on an introduction instrument into the body;
positioning the device at an attachment site in the body such that the concavity is adjacent the tissue surface at the attachment site;
drawing tissue into the concavity;
advancing the pin through the tissue to retain the device at the attachment site; and
monitoring at least one physiological parameter. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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32. A monitoring device for monitoring at least one physiological parameter at an attachment site in a body, comprising:
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a housing, having a tissue attachment surface;
a pin which is movable from a retracted position to allow the tissue attachment surface to be brought into contact with tissue at a preselected attachment site, and an extended position in which it extends through tissue in contact with the attachment surface; and
at least one physiological parameter detector carried by the housing.
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33. An implantable device for measuring at least one physiological parameter indicative of gastroesophageal reflux, the device comprising:
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a casing adapted to be implanted and secured within the body of the patient in a location wherein the surrounding environment provides the at least one physiological parameter indicative of gastroesophagael reflux;
a sensor, positioned within the casing, the is adapted to measure the at least one physiological parameter indicative of gastroesophageal reflux;
a transmitter, positioned within the casing, wherein the transmitter is adapted to send a parameter signal indicative of the measured at least one physiological parameter to a receiver located outside of the body of the patient;
a power source, positioned within the casing, that provides power to the sensor and the transmitter;
a processor, positioned within the casing, that periodically induces the sensor to obtain the at least one physiological parameter and periodically induces the transmitter to transmit a parameter signal indicative of the at least one physiological parameter, wherein the processor enables the delivery of power from the power source to the sensor during a first time interval during each measurement cycle when the sensor is sensing the at least one physiological parameter and wherein the processor enables the delivery of power from the power source to the transmitter during a second time interval during each measurement cycle when the transmitter is transmitting the parameter signal so that consumption of power by the sensor and the transmitter is reduced during intervals of each cycle other than the first and second interval respectively. - View Dependent Claims (34, 35, 36, 37, 38, 39, 40, 41, 42)
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43. A method of measuring a physiological parameter indicative of gastroesophageal reflux using an implanted sensor, the method comprising:
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(a) providing power to a sensor circuit for a first time interval so as to obtain a parameter measurement indicative of gastroesophageal reflux;
(b) ceasing providing power to the sensor circuit following the first time interval;
(c) providing power to a transmitter circuit during a second time interval, following the first time interval so that a parameter signal indicative of the parameter measurement obtained by the sensor circuit can be transmitted to a receiver located outside of the body of the patient; and
(d) ceasing providing power to the transmitter circuit following the second time interval. - View Dependent Claims (44, 46, 47, 48, 49)
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45. The method of 44, wherein power is provided to the sensor for approximately 20 ms during the first time interval.
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50. A system for measuring physiological parameters in the body of a patient indicative of gastroesophageal reflux, the system comprising:
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a plurality of sensors adapted to be implanted in the body of the patient, wherein the plurality of sensors periodically measure a physiological parameter indicative of gastroesophageal reflux and wherein the plurality of sensors periodically transmit a signal indicative of the physiological parameter indicative of gastroesophageal reflux and wherein each signal includes an identifier indicative of the sensor from which each signal is sent; and
a receiver that receives the signals from the plurality of transmitters and records the signals. - View Dependent Claims (51, 52, 53, 54)
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Specification