Apparatus for noninvasive blood pressure measurement

• US 20070142730A1
• Filed: 12/13/2006
• Published: 06/21/2007
• Est. Priority Date: 12/13/2005
• Status: Abandoned Application

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Patzelt, Julia, Laermer, Franz, Stumber, Michael, Scholten, Dick, Maeurer, Christian, Lorenz, Gerd
• Application Number:
  US11/639,052
• Publication Number:
  US 20070142730A1
• Time in Patent Office: Days
• US Class Current: 600/490
• CPC Class Codes: A61B 5/021 Measuring pressure in heart or blood vessels A61B5/0205 takes precedence
• CPC Class Codes: A61B 5/02125 of pulse wave propagation time
• CPC Class Codes: A61B 5/11 Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb for measuring pulse A61B5/02 ;A61B5/1038 takes precedence; motion detection to correct for motion artifacts in physiological signals A61B5/721
• CPC Class Codes: A61B 5/7207 of noise induced by motion artifacts
• CPC Class Codes: A61B 5/721 using a separate sensor to detect motion or using motion information derived from signals other than the physiological signal to be measured

Abstract

An apparatus for noninvasive blood pressure measurement having a device for measuring blood pressure values and an acceleration sensor, in particular a two- or three-axis acceleration sensor for measuring movements is provided for measuring and monitoring blood pressure. Using the movement data ascertained by the acceleration sensor, movement artifacts are calculated out of the measured blood pressure values with the aid of a signal processing system.

Claims

1. An apparatus for noninvasive blood pressure measurement, comprising:

a device for measuring blood pressure values; and

an acceleration sensor corresponding to a two- or three-axis acceleration sensor for measuring movements, wherein an electronic signal processing system is provided, which is designed in such a way that using it corrected blood pressure values may be ascertained from the measured blood pressure values and the measured motion signals of the acceleration sensor.

2. The apparatus for noninvasive blood pressure measurement as recited in claim 1, wherein the acceleration sensor is used for measuring movements of the device for measuring blood pressure values.

3. The apparatus for noninvasive blood pressure measurement as recited in claim 1, wherein the electronic signal processing system has an operational amplifier corresponding to a differential amplifier.

4. The apparatus for noninvasive blood pressure measurement as recited in claim 1, wherein the electronic signal processing system has a digital signal processing system corresponding to a microcontroller.

5. The apparatus for noninvasive blood pressure measurement as recited in claim 1, wherein the device for measuring the blood pressure values has a cuff and pressure measuring means for measuring a pressure applied on the cuff under the influence of pulse waves and the acceleration sensor is integrated into the cuff.

6. The apparatus for noninvasive blood pressure measurement as recited in claim 1, wherein the device for measuring the blood pressure values has a cuff and pressure measuring means for measuring the pressure applied on the cuff under the influence of pulse waves and the acceleration sensor is situated on the cuff.

7. The apparatus for noninvasive blood pressure measurement as recited in claim 1, wherein the device for measuring the blood pressure values comprises a device for measuring the pulse transit time.

8. The apparatus for noninvasive blood pressure measurement as recited in claim 7, wherein the device for measuring the blood pressure values comprises an ECG device and a peripheral sensor corresponding to a pulsoximeter.

9. The apparatus for noninvasive blood pressure measurement as recited in claim 8, wherein the acceleration sensor is situated on or in the ECG measuring device.

10. The apparatus for noninvasive blood pressure measurement as recited in claim 8, wherein the acceleration sensor is situated on or in the peripheral sensor.

13. The method for noninvasive blood pressure measurement as recited in claim 10, wherein the blood pressure values are ascertained with the aid of the method of pulse transit time.

14. The method for noninvasive blood pressure measurement as recited in claim 13, wherein the blood pressure values are ascertained using an ECG measuring device and the measurement of the peripheral blood flow, in particular by using a photometric method, an impedance measurement, a plethysmographic method or a Doppler method.

11. A method for noninvasive blood pressure measurement, comprising:

measuring a blood pressure value by a device for measuring blood pressure values, wherein movements are measured using an acceleration sensor and movement signals are generated from this and the movement signals and the measured blood pressure values are processed in a signal processing system in such a way that corrected blood pressure values are ascertained.

12. The method for noninvasive blood pressure measurement as recited in claim 11, wherein the blood pressure values are ascertained using a blood pressure measuring device, an external pressure being applied using a cuff and being reduced and the pressure applied on the cuff being measured using a pressure measuring means under the influence of pulse waves.