Apparatus and method for providing a control signal for a blood pressure measurement device

Patent metadata

Field	Value
Publication number	US-10912467-B2
Application number	US-201615550915-A
Country	US
Kind code	B2
Filing date	Feb 18, 2016
Priority date	Feb 24, 2015
Publication date	Feb 9, 2021
Grant date	Feb 9, 2021

Abstract

The present invention relates to an apparatus ( 18 ) for providing a control signal for a blood pressure measurement device, comprising: an input interface ( 24 ) for obtaining a health state parameter being indicative of a health state of a patient ( 12 ); a processing unit ( 28 ) for determining one or more operation settings of a blood pressure measurement device ( 14 ) based on the health state parameter, said one or more operation settings including a parameter that can be adjusted at the blood pressure measurement device ( 14 ) when conducting a blood pressure measurement with the device and that affects a precision of said blood pressure measurement and a patient comfort resulting from said blood pressure measurement; and a control interface ( 30 ) for providing a control signal for a blood pressure measurement device ( 14 ) to perform a blood pressure measurement based on said one or more operation settings. The present invention further relates to a corresponding method. Still further, the present invention relates to a system for monitoring a patient.

First claim

The invention claimed is:

1. An apparatus for providing a control signal for a blood pressure measurement device, comprising:
an input interface configured to obtain a health state parameter being indicative of a health state of a patient, said health state parameter including a risk score indicating the health state of the patient on a predefined scale and being determined based on a blood pressure measurement of the patient;
a processor configured to determine one or more operation settings of a blood pressure measurement device based on the health state parameter, said one or more operation settings including a parameter that can be adjusted at the blood pressure measurement device when conducting a blood pressure measurement with the blood pressure measurement device and that affects a precision of said blood pressure measurement and a patient comfort resulting from said blood pressure measurement, wherein the one or more operation settings are determined based on whether the risk score is unaffected by a blood pressure measurement of a first precision level and whether the risk score is affected by a blood pressure measurement of a second precision level; and
a controller configured to provide a control signal for the blood pressure measurement device to perform a blood pressure measurement based on said one or more operation settings.

2. The apparatus as claimed in claim 1 , wherein:
the controller is configured to provide the control signal for a sphygmomanometer comprising an inflatable cuff configured to be applied to a limb of the patient and a pressure sensor for providing a pressure signal being indicative of the pressure in the inflatable cuff; and
the processor is configured to determine the one or more operation settings including at least one of a parameter being indicative of a maximum pressure in the inflatable cuff during a measurement, a parameter being indicative of a duration of the inflatable cuff being inflated during a measurement, a parameter being indicative of an integral of the pressure applied during a measurement and a parameter being indicative of a number of heartbeats to be detected.

3. The apparatus as claimed in claim 1 , wherein the processor is configured to:
determine the one or more operation settings related to the first precision level and a first patient comfort level when the health state parameter indicates an uncritical health state of the patient; and
determine the one or more operation settings related to the second precision level and a second patient comfort level when the health state parameter indicates a deteriorating health state of the patient, wherein the first precision level is lower than the second precision level and the first patient comfort level is higher than the second patient comfort level.

4. The apparatus as claimed in claim 3 , wherein said risk score being below a predefined threshold indicates the uncritical health state of the patient and said risk score being above said predefined threshold indicates the deteriorating health state of the patient.

5. The apparatus as claimed in claim 3 , wherein:
the controller is configured to provide the control signal for a sphygmomanometer comprising an inflatable cuff configured to be applied to a limb of the patient and a pressure sensor for providing a pressure signal being indicative of the pressure in the inflatable cuff; and
the processor is configured to determine the one or more operation settings being related to said second precision level and said second patient comfort level by resulting in a systolic blood pressure of the patient being inferred based on an auscultatory or an oscillometric method during deflation of the inflatable cuff.

6. The apparatus as claimed in claim 3 , wherein:
the controller is configured to provide the control signal for a sphygmomanometer comprising an inflatable cuff configured to be applied to a limb of the patient and a pressure sensor for providing a pressure signal being indicative of the pressure in the inflatable cuff; and
the processor is configured to determine the one or more operation settings being related to said first precision level and said first patient comfort level by resulting in a systolic blood pressure of the patient being inferred based on at least one of:
extrapolation of a signal envelope of the pressure signal during cuff inflation;
extraction of a diastolic blood pressure and a mean arterial blood pressure from a signal envelope of the pressure signal during cuff inflation; and
extraction of a diastolic blood pressure from a signal envelope of the pressure signal during cuff inflation and extraction of a mean arterial blood pressure from a vital sign of the patient corresponding to a surrogate blood pressure measurement of the patient derived from at least one additional signal comprising a photoplethysmography signal and/or an electrocardiogram.

7. The apparatus as claimed in claim 1 , wherein the input interface is configured to obtain at least one input signal indicative of a vital sign of a patient, said apparatus further configured to determine a health state parameter indicative of the health state of the patient based on the at least one input signal.

8. The apparatus as claimed in claim 7 , wherein the input interface is configured to:
obtain the at least one input signal from the blood pressure measurement device, said the at least one input signal being indicative of a blood pressure of the patient; and/or
obtain the at least one input signal and a corresponding accuracy indicator being indicative of a validity of the at least one input signal with respect to the vital sign, said accuracy indicator being predefined for a respective input signal or being updated continuously based on a current blood pressure measurement.

9. The apparatus as claimed in claim 8 , wherein at least one of:
the processor is configured to determine the one or more operation settings based on said at least one input signal and said corresponding accuracy indicator; and
the apparatus is configured to determine the health state parameter based on said at least one input signal and said corresponding accuracy indicator.

10. The apparatus as claimed in claim 7 , wherein:
the input interface is configured to obtain medical record data of the patient in addition to the at least one input signal, said medical record data being indicative of a medical history of the patient; and
the apparatus is configured to determine the health state parameter based on the medical record data of the patient in addition to the at least one input signal.

11. The apparatus as claimed in claim 7 , wherein the input interface is configured to obtain the at least one input signal being indicative of a blood pressure, a blood oxygen saturation, a body temperature, a concentration of carbon dioxide in the respiratory gases, a heart rate, a pulse arrival time, a pulse transit time, a pulse morphology and a breathing frequency of the patient.

12. The apparatus as claimed in claim 7 , wherein the input interface is configured to obtain a protocol parameter in addition to the at least one input signal, said protocol parameter being indicative of a predefined treatment policy; and
the processor is configured to determine the one or more operation settings based on said at least one input signal and said protocol parameter.

13. A system for monitoring a patient, comprising:
at least one vital sign sensor configured to provide at least one input signal being indicative of a vital sign of the patient;
the apparatus as claimed in claim 1 , wherein the apparatus is configured to determine a health state parameter b

Assignees

• Koninklijke Philips Nv

Inventors

• Muehlsteff Jens
• Bresch Erik
• Van Den Heuvel Teun
• Schmitt Lars
• Woehrle Dieter

Classifications

• A61B5/021 Primary

  Measuring pressure in heart or blood vessels · CPC title

• G16H50/30

  for calculating health indices; for individual health risk assessment · CPC title

• A61B8/04

  Measuring blood pressure · CPC title

• A61B5/02225

  using the oscillometric method · CPC title

• A61B5/7275

  Determining trends in physiological measurement data; Predicting development of a medical condition based on physiological measurements, e.g. determining a risk factor · CPC title