Devices, systems, and methods to obtain conductance and temperature data
First Claim
1. A method to obtain conductance data within a luminal organ, the method comprising the steps of:
- operating a detection device having an elongate body with a plurality of electrodes and a thermistor disposed thereon, wherein at least one of the electrodes is located distal to the thermistor, and wherein the elongate body of the detection device is at least partially positioned within the luminal organ to detect a temperature change using the thermistor from a first temperature to a temperature indicative of an injection of a bolus of a solution having a known conductivity;
obtaining multiple conductance measurements using at least one of the plurality of the electrodes located along the elongate body of the detection device prior to dilution of the bolus until a threshold temperature is reached;
calculating a dimension of the luminal organ based in part upon at least one conductance measurement of the multiple conductance measurements; and
selecting an appropriately-sized stent based upon the calculated dimension.
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Accused Products
Abstract
Devices, systems, and methods to measure parallel tissue conductance, luminal cross-sectional areas, fluid velocity, and/or determine plaque vulnerability using temperature. In at least one embodiment of a method to obtain parallel tissue conductance, the method comprises the steps of inserting at least part of a detection device into a luminal organ, applying current thereto, obtaining a native temperature measurement, injecting a solution of a known conductivity into the luminal organ, detecting a temperature change indicative of the fluid within the luminal organ, measuring an output conductance, and calculating a parallel tissue conductance based upon the output conductance and the conductivity of the injected solution.
62 Citations
18 Claims
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1. A method to obtain conductance data within a luminal organ, the method comprising the steps of:
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operating a detection device having an elongate body with a plurality of electrodes and a thermistor disposed thereon, wherein at least one of the electrodes is located distal to the thermistor, and wherein the elongate body of the detection device is at least partially positioned within the luminal organ to detect a temperature change using the thermistor from a first temperature to a temperature indicative of an injection of a bolus of a solution having a known conductivity; obtaining multiple conductance measurements using at least one of the plurality of the electrodes located along the elongate body of the detection device prior to dilution of the bolus until a threshold temperature is reached; calculating a dimension of the luminal organ based in part upon at least one conductance measurement of the multiple conductance measurements; and selecting an appropriately-sized stent based upon the calculated dimension. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A detection device configured to obtain conductance data within a luminal organ, comprising:
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an elongated body having a thermistor located thereon, the thermistor configured to detect a temperature change within the luminal organ from a first temperature to a temperature indicative of an injection of a bolus of a solution having a known conductivity; and at least two electrodes along the elongated body wherein at least one of the at least two electrodes is/are located distal to the thermistor, the at least two electrodes configured to obtain multiple conductance measurements within the luminal organ in connection with the injected solution and based upon the detected temperature change prior to dilution of the bolus and until a threshold temperature is reached; wherein the device is configured for use in connection with a method to obtain the conductance data within the luminal organ, the method comprising the steps of; operating the detection device at least partially positioned within the luminal organ to detect the temperature change using the thermistor of the detection device from the first temperature to the temperature indicative of the injection of the bolus of the solution having the known conductivity; and obtaining multiple conductance measurements using the at least two electrodes of the detection device prior to dilution of the bolus at least until the threshold temperature is reached; calculating a dimension of the luminal organ based in part upon at least one conductance measurement of the multiple conductance measurements; and selecting an appropriately-sized stent based upon the calculated dimension. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A system configured to obtain conductance data within a luminal organ, comprising:
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a detection device, comprising; an elongated body having a thermistor located thereon, the thermistor configured to detect temperature data including a temperature change within the luminal organ from a first temperature to a temperature indicative of an injection of a bolus of a solution having a known conductivity; and at least two electrodes along the elongated body wherein at least one of the at least two electrodes is/are located distal to the thermistor, the at least two electrodes configured to obtain multiple conductance measurements within the luminal organ in connection with the injected solution and based upon the detected temperature change prior to dilution of the bolus and until a threshold temperature is reached; and a data acquisition and processing system operably coupled to the device and capable of (a) receiving the temperature data from the thermistor in connection with the injection of the bolus, and (b) obtaining the multiple conductance measurements from the at least two electrodes while receiving the temperature data; wherein the device is configured for use in connection with a method to obtain the conductance data within the luminal organ, the method comprising the steps of; operating the detection device at least partially positioned within the luminal organ to detect the temperature change using the thermistor of the detection device from the first temperature to the temperature indicative of the injection of the bolus of the solution having the known conductivity; and obtaining multiple conductance measurements using the at least two electrodes of the detection device prior to dilution of the bolus at least until the threshold temperature is reached; calculating a dimension of the luminal organ based in part upon at least one conductance measurement of the multiple conductance measurements; and selecting an appropriately-sized stent based upon the calculated dimension. - View Dependent Claims (18)
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Specification