Methods and systems for detecting the hydration of sensors
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A61B-005/00
G01N-027/403
A61B-005/145
G01N-027/327
G01N-027/416
A61B-005/1473
출원번호
US-0964591
(2013-08-12)
등록번호
US-9360447
(2016-06-07)
발명자
/ 주소
Shah, Rajiv
Morgan, Wayne A.
Choy, David Y.
Henke, James L.
Reghabi, Bahar
Soundararajan, Gopikrishnan
Schultz, Peter
Hoss, Udo
출원인 / 주소
MEDTRONIC MINIMED, INC.
대리인 / 주소
Pillsbury Winthrop Shaw Pittman LLP
인용정보
피인용 횟수 :
0인용 특허 :
103
초록▼
A sensor system includes a sensor and a sensor electronics device. The sensor includes a plurality of electrodes. The sensor electronics device includes a connection detection device, a power source, and a delay circuit. The connection detection device determines if the sensor electronics device is
A sensor system includes a sensor and a sensor electronics device. The sensor includes a plurality of electrodes. The sensor electronics device includes a connection detection device, a power source, and a delay circuit. The connection detection device determines if the sensor electronics device is connected to the sensor and transmits a connection signal. The delay circuit receives the connection signal, waits a preset hydration time, and couples the regulated voltage from the power source to an electrode in the sensor after the preset hydration time has elapsed. Alternatively, the sensor electronics device may include an electrical detection circuit and a microcontroller. The electrical detection circuit determines if the plurality of electrodes are hydrated and generates an interrupt if the electrodes are hydrated. A microcontroller receives the interrupt and transmits a signal representative of a voltage to an electrode of the plurality of electrodes.
대표청구항▼
1. A sensor system, comprising: a sensor configured to provide a sensor signal indicative of a physiological characteristic of a patient, the sensor including a plurality of electrodes that are configured to be implanted or disposed subcutaneously within the patient's body so as to be in continuous
1. A sensor system, comprising: a sensor configured to provide a sensor signal indicative of a physiological characteristic of a patient, the sensor including a plurality of electrodes that are configured to be implanted or disposed subcutaneously within the patient's body so as to be in continuous contact with the patient's bodily fluids; anda sensor electronics device that is coupled to the sensor and includes: an electrical detection circuit that determines whether the plurality of electrodes in the sensor are hydrated and, only after said plurality of electrodes are hydrated, generates an interrupt; anda microcontroller that receives the interrupt from the electrical detection circuit and transmits a signal representative of a voltage to the sensor, wherein an electrode of the plurality of electrodes receives the voltage derived from the transmitted signal. 2. The sensor system of claim 1, wherein the sensor electronics device further includes a digital-to-analog converter (DAC) that receives the signal from the microcontroller and converts the signal into the voltage to be applied to said an electrode of the plurality of electrodes. 3. The sensor system of claim 1, wherein the sensor electronics device further includes a measurement detection circuit that detects a reading of a said physiological characteristic of the patient at a second electrode of the sensor. 4. The sensor system of claim 3, wherein the measurement detection circuit is a current-to-frequency converter that measures a current reading at said second electrode, converts the current reading to a frequency reading indicative of the physiological characteristic, and transmits the frequency reading to the microcontroller. 5. The sensor system of claim 1, wherein the sensor electronics device further includes an AC voltage source that is coupled to a second electrode of the plurality of electrodes to supply an AC voltage signal to said second electrode. 6. The sensor system of claim 5, wherein the electrical detection circuit includes a comparator to detect a level of the AC signal present at an input of the comparator, and wherein, if a low level AC signal is present at the input of the comparator, the electrical detection circuit generates the interrupt that is transmitted to the microcontroller. 7. The sensor system of claim 1, wherein: the plurality of electrodes includes a counter electrode, a reference electrode, and a working electrode;an AC source is coupled to the reference electrode and supplies an AC signal to the reference electrode;the electrical detection circuit includes a comparator to detect a level of the AC signal present at the input of the comparator and generate the interrupt that is transmitted to the microcontroller if a low level AC signal is present at the input of the comparator; andthe voltage derived from the signal that is transmitted by the microcontroller is to be applied to the counter electrode. 8. The sensor system of claim 7, wherein a measurement detection circuit detects a measurement of said physiological characteristic at the working electrode and transmits said measurement to the microcontroller. 9. The sensor system of claim 7, wherein the low level AC signal is present at the input of the comparator because of effective sensor capacitance between the working electrode and the reference electrode, and effective sensor capacitance between the reference electrode and the counter electrode. 10. The sensor system of claim 1, wherein said physiological characteristic is the patient's blood glucose. 11. The sensor system of claim 1, wherein said plurality of electrodes includes a counter electrode, a reference electrode, and a working electrode. 12. A sensor system, comprising: a sensor configured to provide a sensor signal indicative of a physiological characteristic of a patient, the sensor including a plurality of electrodes that are configured to be implanted or disposed subcutaneously within the patient's body so as to be in continuous contact with the patient's bodily fluids; anda sensor electronics device that is coupled to the sensor and includes: an electrical detection circuit that is configured to determine whether the plurality of electrodes in the sensor are hydrated and, only after said plurality of electrodes are hydrated, generates an interrupt;a microcontroller that receives the interrupt from the electrical detection circuit and transmits a signal representative of a voltage to the sensor, wherein a first electrode of the plurality of electrodes receives the voltage derived from the transmitted signal;a digital-to-analog converter (DAC) that receives the signal from the microcontroller and converts the signal into the voltage to be transmitted to said first electrode of the plurality of electrodes; anda measurement detection circuit that detects a reading of said physiological characteristic of the patient at a second electrode of the plurality of electrodes after said voltage has been transmitted to said first electrode. 13. The sensor system of claim 12, wherein the sensor electronics device further includes an AC voltage source that is coupled to a third electrode of the plurality of electrodes to supply an AC voltage signal to said third electrode. 14. The sensor system of claim 13, wherein the electrical detection circuit includes a comparator to detect a level of the AC signal present at an input of the comparator, and wherein, if a low level AC signal is present at the input of the comparator, the electrical detection circuit generates the interrupt that is transmitted to the microcontroller. 15. The sensor system of claim 14, wherein the plurality of electrodes includes a counter electrode, a reference electrode, and a working electrode. 16. The sensor system of claim 15, wherein said first electrode is the counter electrode, said second electrode is the working electrode, and said third electrode is the reference electrode. 17. The sensor system of claim 16, wherein said physiological characteristic is the patient's blood glucose. 18. The sensor system of claim 12, wherein the plurality of electrodes includes a counter electrode, a reference electrode, and a working electrode. 19. The sensor system of claim 12, wherein said physiological characteristic is the patient's blood glucose.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (103)
Allen Douglas J. (Indianapolis IN) Nevin Robert S. (Indianapolis IN), Acrylic copolymer membranes for biosensors.
Schulman Joseph H. ; Lucisano Joseph Y. ; Shah Rajiv ; Byers Charles L. ; Pendo Shaun M., Alumina insulation for coating implantable components and other microminiature devices.
Say James ; Tomasco Michael F. ; Heller Adam ; Gal Yoram,ILX ; Aria Behrad ; Heller Ephraim ; Plante Phillip John ; Vreeke Mark S. ; Friedman Keith A. ; Colman Fredric C., Analyte monitoring device and methods of use.
Mund Konrad (Uttenreuth DEX) Rao Raghavendra (Erlangen DEX) Richter Gerhard (Erlangen DEX), Device and method for the physiological frequency control of a heart pacemaker equipped with a stimulating electrode.
Say James ; Tomasco Michael F. ; Heller Adam ; Gal Yoram,ILX ; Aria Behrad ; Heller Ephraim ; Plante Phillip John ; Vreeke Mark S., Electrochemical analyte.
James Say ; Michael F. Tomasco ; Adam Heller ; Yoram Gal IL; Behrad Aria ; Ephraim Heller ; Phillip John Plante ; Mark S. Vreeke, Electrochemical analyte sensor.
Gibson, Scott R.; Shah, Rajiv; Chernoff, Edward; Byers, Charles, Electronic lead for a medical implant device, method of making same, and method and apparatus for inserting same.
Kirkpatrick Francis H. (Owls Head ME) Willis T. Chad (Bowdinham ME) Watt William (Barto PA) Daum ; III Henry A. (Camden ME) Kaura Satyin (Oslo PA NOX) Johnson Pegram A. (Wayne PA), Electrophoresis gel container assemblies.
Gregg Brian A. (13940 Braun Dr. Golden CO 80401) Heller Adam (5317 Valburn Cir. Austin TX 78731) Kerner Wolfgang (Universitat Zu Lubeck ; Klinik Fur Innerere Medizin ; Razeburger Allee 160 D-2400 Lub, Enzyme electrodes.
Gregg Brian A. (13940 Braun Dr. Golden CO 80401) Heller Adam (5317 Valburn Cir. Austin TX 78731) Kerner Wolfgang (Universitat zu Lubeck ; Klinik fur Innerere Medizin ; Razeburger Allee 160 D-2400 Lub, Enzyme electrodes.
Lord Peter C. (Santa Clarita CA) Van Antwerp William P. (Brentwood CA) Mastrototaro John J. (Los Angeles CA) Cheney ; II Paul S. (Beverly Hills CA) Schnabel Nannette M. (Valencia CA), Flex circuit connector.
Schulman Joseph H. (Santa Clarita CA) Rule ; III Orville R. (Los Angeles CA) Whitmoyer David I. (Los Angeles CA) Lebel Ronald J. (Sherman Oaks CA) Lucisano Joseph Y. (Saugus CA) Mann Alfred E. (Bever, Glucose monitoring system.
Schulman Joseph H. (Santa Clarita CA) Rule ; III Orville Rey (Los Angeles CA) Whitmoyer David I. (Los Angeles CA) Lebel Ronald J. (Sherman Oaks CA) Lucisano Joseph Y. (Saugus CA) Mann Alfred E. (Beve, Glucose sensor assembly.
Allen Douglas J. (Indianapolis IN) Johnson Kirk W. (Indianapolis IN) Nevin Robert S. (Indianapolis IN), Hydrophilic polyurethane membranes for electrochemical glucose sensors.
Schulman Joseph H. ; Byers Charles L. ; Adomian Gerald E. ; Colvin Michael S., Implantable enzyme-based monitoring systems having improved longevity due to improved exterior surfaces.
Wilson George S. (Lawrence KS) Bindra Dilbir S. (Lawrence KS) Hill Brian S. (Lawrence KS) Thevenot Daniel R. (Paris Cedex FRX) Sternberg Robert (Thiais FRX) Reach Gerard (Paris Cedex KS FRX) Zhang Ya, Implantable glucose sensor.
Say, James L.; Sakslund, Henning; Tomasco, Michael F.; Audett, Jay D.; Cho, Hyun; Yamasaki, Duane O.; Heller, Adam, Mass transport limited in vivo analyte sensor.
Colman Fredric C. (Granada Hills CA) Purvis Richard E. (Glendale CA), Medication infusion system having optical motion sensor to detect drive mechanism malfunction.
Bussmann Stephan A. (Granger IN) Ruggiero Joseph E. (Goshen IN) Trippel Christine G. (Mishawaka IN), Method and apparatus for making predetermined events with a biosensor.
Joseph H. Schulman ; Joseph Y. Lucisano ; Rajiv Shah ; Charles L. Byers ; Shaun M. Pendo, Method of applying insulation for coating implantable components and other microminiature devices.
Feldman, Benjamin J.; Heller, Adam; Heller, Ephraim; Mao, Fei; Vivolo, Joseph A.; Funderburk, Jeffery V.; Colman, Fredric C.; Krishnan, Rajesh, Method of using a small volume in vitro analyte sensor with diffusible or non-leachable redox mediator.
Shah, Rajiv; Morgan, Wayne A.; Choy, David Y.; Henke, James L.; Reghabi, Bahar; Soundararajan, Gopikrishnan; Schultz, Peter; Hoss, Udo, Methods and systems for detecting the hydration of sensors.
Shah, Rajiv; Morgan, Wayne A.; Choy, David Y.; Henke, James L.; Reghabi, Bahar; Soundararajan, Gopikrishnan; Schultz, Peter; Hoss, Udo, Methods and systems for detecting the hydration of sensors.
Say James ; Tomasco Michael F. ; Heller Adam ; Gal Yoram,ILX ; Aria Behrad ; Heller Ephraim ; Plante Phillip John ; Vreeke Mark S., Process for producing an electrochemical biosensor.
Livingston John H. (Los Angeles CA) Frye Ward K. (San Luis Obispo CA) Field Jeffrey F. (Northridge CA), Proctective case for a medication infusion pump.
Liamos, Charles T.; Feldman, Benjamin J.; Funderburk, Jeffery V.; Krishnan, Rajesh; Plante, Phillip John; Vivolo, Joseph A.; Jin, Robert Y.; Cloud, Michael S., Small volume in vitro analyte sensor and methods.
Liamos, Charles T.; Feldman, Benjamin J.; Funderburk, Jeffery V.; Krishnan, Rajesh; Plante, Phillip John; Vivolo, Joseph A.; Jin, Robert Y.; Cloud, Michael S., Small volume in vitro analyte sensor and methods.
Nason Clyde K. (25745 N. Player Dr. Valencia CA 91355) Culp Gordon W. (13832 Haynes St. Van Nuys CA 91401), Solenoid drive apparatus for an external infusion pump.
Mann, Alfred E.; Purvis, Richard E.; Mastrototaro, John J.; Causey, James D.; Henke, James; Hong, Peter; Livingston, John H.; Hague, Clifford W.; Hite, Brad T., Telemetered characteristic monitor system and method of using the same.
Lord Peter C. (Santa Clarita CA) Van Antwerp William P. (Brentwood CA) Mastrototaro John J. (Los Angeles CA) Cheney ; II Paul S. (Beverly Hills CA) Schnabel Nannette M. (Valencia CA), Transcutaneous sensor insertion set.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.