System and method for analyzing cardiovascular pressure measurements made within a human body

• US 20070142727A1
• Filed: 12/15/2005
• Published: 06/21/2007
• Est. Priority Date: 12/15/2005
• Status: Abandoned Application

• Current Assignee: Cardiac Pacemakers Incorporated (Boston Scientific Corporation)
• Original Assignee: Cardiac Pacemakers Incorporated (Boston Scientific Corporation)
• Inventors: Zhang, Cheng, Chavan, Abhi, Piaget, Thomas, Juffer, Lance, Pheil, Holli
• Application Number:
  US11/300,769
• Publication Number:
  US 20070142727A1
• Time in Patent Office: Days
• US Class Current: 600/486
• CPC Class Codes: A61B 2560/0209 adapted for power saving
• CPC Class Codes: A61B 2560/0257 using atmospheric pressure
• CPC Class Codes: A61B 5/0031 Implanted circuitry
• CPC Class Codes: A61B 5/02055 Simultaneously evaluating both cardiovascular condition and temperature
• CPC Class Codes: A61B 5/02156 Calibration means
• CPC Class Codes: A61B 5/026 Measuring blood flow A61B3/1233, A61B3/1241 take precedence
• CPC Class Codes: A61B 5/08 Detecting, measuring or recording devices for evaluating the respiratory organs A61B5/0205 takes precedence
• CPC Class Codes: A61B 5/1116 Determining posture transitions
• CPC Class Codes: A61B 5/145 Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissuemeasuring of blood pressure or blood flow A61B5/02; non-radiation detecting or locating of foreign bodies in blood A61B5/06
• CPC Class Codes: A61B 5/14532 for measuring glucose, e.g. by tissue impedance measurement
• CPC Class Codes: A61B 5/4839 combined with drug delivery
• CPC Class Codes: A61M 2205/054 with electrotherapy
• CPC Class Codes: A61M 2205/3523 using telemetric means
• CPC Class Codes: A61M 2205/3553 remote, e.g. between patient's home and doctor's office
• CPC Class Codes: A61M 2205/3561 local, e.g. within room or hospital
• CPC Class Codes: A61M 5/14276 specially adapted for implantation
• CPC Class Codes: A61M 5/1723 using feedback of body parameters, e.g. blood-sugar, pressure measurement of body parameters A61B5/00
• CPC Class Codes: A61N 1/36564 controlled by blood pressure
• CPC Class Codes: A61N 1/37 Monitoring; Protecting
• CPC Class Codes: A61N 1/37252 Details of algorithms or data aspects of communication system, e.g. handshaking, transmitting specific data or segmenting data
• CPC Class Codes: A61N 1/37254 : Pacemaker or defibrillator security, e.g. to prevent or inhibit programming alterations by hackers or unauthorised individuals
• CPC Class Codes: A61N 1/37288 : Communication to several implantable medical devices within one patient

Abstract

A cardiovascular pressure data analyzing system having one or more implanted pressure sensors, an implanted communication device in wireless communication with the sensor and an external data processing unit adapted to use real-time barometric data to calibrate uncalibrated pressure data received from the communication device. The external data processing unit can be portable, is in communication with a remote database to transfer the calibrated pressure data to the remote database, and is capable of providing reprogramming information to the communication device. A method of analyzing pressure data including gathering pressure data from an implanted pressure sensor in a human body, retrieving the pressure data through a communication device implanted in the human body, transmitting pressure data from the communication device to an external data processing unit, and calibrating the pressure data at the external processing unit to compensate for inherent characteristics of the sensor.

Claims

1. A system for analyzing cardiovascular pressure data within a human body, comprising:

a sensor implanted at a location in the human body for measuring pressure data;

a communication device implanted in the human body and in wireless communication with the sensor for receiving the pressure data from the sensor in an uncalibrated form; and

an external data processing unit having a barometric pressure sensor and capable of wireless communication with the communication device for receiving the uncalibrated pressure data,

wherein the external data processing unit is adapted to use real-time barometric data to calibrate the uncalibrated pressure data, and generate relative pressure data in real-time based on barometric and calibrated pressure data.

2. The system of claim 1, wherein the communication device is a pulse generator.

3. The system of claim 1, wherein the communication device is associated with a unique identification parameter for enabling wireless communication of the uncalibrated pressure data from the communication device to the external data processing unit.

4. The system of claim 3, wherein the external data processing unit includes a plurality of unique identification parameters, each unique identification parameter uniquely identifying each of a plurality of communication devices, and enabling wireless communication of pressure data to the external data processing unit from the plurality of communication devices.

5. The system of claim 1, wherein the sensor is associated with a unique identifier, whereby the external data processing unit can uniquely identify the sensor to calibrate the uncalibrated pressure data based on calibration characteristics associated with the sensor.

6. The system of claim 5, wherein the external data processing unit is in communication with a network database having stored therein calibration characteristics corresponding to the unique identifier, and wherein the external data processing unit accesses the calibration characteristics from the network database.

7. The system of claim 1, wherein the external data processing unit further includes a capability for providing reprogramming information to the communication device.

8. The system of claim 1, wherein the external data processing unit is portable.

9. The system of claim 1, wherein the sensor includes calibration information for adjusting pressure data collected by the sensor and wherein the calibration information is accessible by the external data processing unit.

10. The system of claim 1, wherein the sensor is a first sensor and the location is a first location, the system further comprising a second sensor implanted at a second location in the human body for measuring data related to a physiologic parameter within the human body, the second sensor in wireless communication with the communication device, and wherein the external data processing unit is capable of wireless communication with the communication device for receiving data measured by the second sensor.

11. The system of claim 10, wherein the physiologic parameter is related to pressure at the second location.

12. The system of claim 10, wherein the physiologic parameter is related to the posture of the human body at the second location.

13. The system of claim 10, wherein the physiologic parameter is related to body temperature at the second location.

14. The system of claim 10, wherein the physiologic parameter is related to respiration.

15. The system of claim 10, wherein the physiologic parameter is related to one of blood oxygen level, blood glucose level, and blood flow at the second location.

16. The system of claim 1, further comprising a remote database in communication with the external data processing unit, wherein the external data processing unit is adapted to transfer the calibrated pressure data to the remote database.

17. A method of analyzing pressure data, comprising:

gathering pressure data at a pressure sensor implanted in a human body;

retrieving the pressure data from the pressure sensor by a communication device implanted in the human body;

transmitting pressure data from the communication device to an external data processing unit; and

calibrating the pressure data at the external processing unit to compensate for inherent characteristics of the sensor.

18. The method of claim 17, further comprising a step of establishing communication between the communication device and the external processing unit prior to the step of transmitting the pressure data from the communication device to the external unit.

19. The method of claim 18, wherein the step of establishing communication between the communication device and the external processing unit is initiated by the communication device.

20. The method of claim 18, wherein the step of establishing communication between the communication device and the external processing unit is automatically initiated in response to a predetermined event.

21. The method of claim 18, wherein the step of establishing communication between the communication device and the external data processing unit includes providing proper identification information from the external data processing unit to the communication device.

22. The method of claim 21, wherein a plurality of external data processing units simultaneously attempt to establish communication with the communication device and further comprising the step of selecting one external data processing unit for communication with the communication device.

23. The method of claim 17, further comprising the step of calibrating the pressure data to compensate for atmospheric pressure.

24. The method of claim 17, further comprising the step of calibrating the pressure data to compensate for other physiologic parameters.

25. The method of claim 24, wherein the step of compensating for other physiologic parameters includes compensating for respiration by the human body.

26. The method of claim 24, wherein the step of compensating for other physiologic parameters includes compensating for posture of the human body.

27. The method of claim 24, wherein the step of compensating for other physiologic parameters includes compensating for temperature of the human body.

28. A system for analyzing blood pressure data corresponding to blood pressure in a human body, the system comprising:

implanted sensor means implanted for collecting diagnostic information within the human body;

implanted communication means for collecting diagnostic information from the implanted sensor means; and

external data processing means for automatically receiving and calibrating diagnostic information from the implanted communication means.