Pressure data acquisition assembly

• US 9,778,131 B2
• Filed: 05/21/2014
• Issued: 10/03/2017
• Est. Priority Date: 05/21/2013
• Status: Active Grant

• Current Assignee: Orpyx Medical Technologies Inc.
• Original Assignee: Orpyx Medical Technologies Inc.
• Inventors: Everett, Julia Breanne, Groenland, Marcel, Hehr, Amanda Rae, Coutts, Daryl David, Turnquist, Llewellyn Lloyd, Stevens, Travis Michael
• Primary Examiner(s): Le, John H
• Application Number:
  US14/283,921
• Publication Number:
  US 20140350882A1
• Time in Patent Office: 1,231 Days
• Field of Search: 702 44, 702 47, 702 85, 702 98, 702104, 156329, 600587, 600595
• CPC Class Codes: A61B 2562/0223 Magnetic field sensors
• CPC Class Codes: A61B 2562/0247 Pressure sensors
• CPC Class Codes: A61B 2562/046 in a matrix array
• CPC Class Codes: A61B 5/1038 Measuring plantar pressure during gait
• CPC Class Codes: A61B 5/445 Evaluating skin irritation or skin trauma, e.g. rash, eczema, wound, bed sore
• CPC Class Codes: A61B 5/6807 Footwear
• CPC Class Codes: A61B 5/6833 Adhesive patches
• CPC Class Codes: A61B 5/7225 Details of analog processing, e.g. isolation amplifier, gain or sensitivity adjustment, filtering, baseline or drift compensation A61B5/30, A61B5/316 take precedence; transformers for specific applications H01F38/00; amplifiers H03F
• CPC Class Codes: A61B 5/746 Alarms related to a physiological condition, e.g. details of setting alarm thresholds or avoiding false alarms alarms per se G08B
• CPC Class Codes: A61G 7/057 Arrangements for preventing bed-sores or for supporting patients with burns, e.g. mattresses specially adapted therefor ventilation openings in mattresses A47C21/042; pneumatic or hydraulic mattresses A47C27/08
• CPC Class Codes: G01D 3/08 with provision for safeguarding the apparatus, e.g. against abnormal operation, against breakdown
• CPC Class Codes: G01L 19/12 Alarms or signals
• CPC Class Codes: G01L 25/00 Testing or calibrating of apparatus for measuring force, torque, work, mechanical power, or mechanical efficiency
• CPC Class Codes: G01L 27/002 Calibrating, i.e. establishing true relation between transducer output value and value to be measured, zeroing, linearising or span error determination

Abstract

A method and assembly for acquiring pressure data. A pressure sensor is applied to a target surface on an individual. A calibrator and a processing element are in communication with the pressure sensor. Processing element receives pressure data and provides an integrated pressure value over a measurement time period. The integrated pressure value is compared to an alert value and to a change condition value. Where an alert value is exceeded, an alert is transmitted to an output device for display. Where a change condition value is exceeded, a measurement parameter of the pressure sensor is changed, or the calibrator is applied to the pressure sensor to recalibrate the pressure sensor to a recalibrated pressure range.

Claims

1. A pressure data acquisition assembly comprising:

a support web for applying to a target surface of a body of an individual;

a first pressure sensor connected to the support web for sensing at a first frequency a first pressure applied to the target surface;

a calibrator in operative communication with the first pressure sensor for calibrating the first pressure sensor to a first pressure range within which the first pressure sensor senses the first pressure;

a processing element in operative communication with the first pressure sensor for receiving first pressure signals corresponding to values of the first pressure from the first pressure sensor at the first frequency, and with the calibrator for recalibrating the first pressure sensor, the processing element comprising;

a computer readable memory for storing measurement parameters comprising a first threshold value corresponding to a first threshold pressure, a first measurement time period, a first alert value, and a first change condition; and

a processor in operative communication with the computer readable memory for accessing the measurement parameters, comparing the first pressure to the first threshold pressure to provide a first comparative pressure, integrating the first comparative pressure over the first time measurement period to provide a first integrated pressure, comparing the first integrated pressure with the first alert value to determine a first alert status, comparing the first integrated pressure with the first change condition to determine a first change status, and changing at least one measurement parameter or recalibrating the first pressure sensor to a first recalibrated pressure range, according to the first change status; and

an output device in communication with the processing element for receiving signals comprising data from the processing element and displaying the data.

2. The assembly of claim 1 further comprising a second pressure sensor for sensing at a second frequency a second pressure applied to the target surface;

wherein the calibrator is further in operative communication with the second pressure sensor for calibrating the second pressure sensor;

the processing element is in operative communication with the second pressure sensor for receiving second pressure signals corresponding to values of the second pressure from the second pressure sensor at the second frequency, and with the calibrator for recalibrating the second pressure sensor;

the measurement parameters further comprise a second threshold value corresponding to a second threshold pressure, a second measurement time period, a second alert value, and a second change condition;

the processing element is further for comparing the second normalized pressure to a second threshold pressure value to determine a second comparative pressure;

the processor is in operative communication with the computer readable memory for accessing the measurement parameters, comparing the second pressure to the second threshold pressure to provide a second comparative pressure, integrating the second comparative pressure with time over the second time measurement period to provide a second integrated pressure, comparing the second integrated pressure with the second alert value to determine a second alert status, comparing the second integrated pressure with the second change condition to determine a second change status, and changing at least one measurement parameter or recalibrating at least one of the first pressure sensor to a first recalibrated pressure range and the second pressure sensor to a second recalibrated pressure range, according to the second change status.

3. The assembly of claim 2 wherein the data comprises data of the first and second comparative pressures and the relative locations of the first and second pressure sensors on the target area, and the data is displayed visually.

4. The assembly of claim 2 wherein the first frequency and the second frequency are substantially equal.

5. The assembly of claim 2 wherein the first pressure range and the second pressure range are substantially equal.

6. The assembly of claim 2 wherein the calibrator is for calibrating the first pressure sensor and the second pressure sensor with a single input action.

7. The assembly of claim 2 wherein the first recalibration pressure range and the second recalibration pressure range are substantially equal.

8. The assembly of claim 2 wherein the first threshold pressure and the second threshold pressure are substantially equal.

9. The assembly of claim 1 further comprising a biological parameter sensor connected to the support web for sensing at a biological parameter frequency a biological parameter of the target surface;

wherein;

the processing element is in operative communication with the biological parameter sensor for receiving biological parameter signals in a biological parameter value range corresponding to biological parameter values at the biological parameter frequency;

the measurement parameters further comprise a biological threshold value corresponding to a threshold biological parameter value, a biological parameter measurement time period, a biological parameter alert value, and a biological parameter change condition; and

the processor is in operative communication with the computer readable memory for accessing the measurement parameters, comparing the biological parameter values to the threshold biological parameter value to provide a comparative biological parameter value, integrating the comparative biological parameter value over the biological parameter time measurement period to provide an integrated biological parameter value, comparing the biological parameter value with the biological parameter alert value to determine a biological parameter alert status, comparing the biological parameter integrated pressure with the biological parameter change condition to determine a biological parameter change status, and changing at least one measurement parameter or recalibrating the first pressure sensor to the first recalibrated pressure range, according to the biological parameter change status; and

the output device is in communication with the processing element for displaying the comparative biological parameter value.

10. The assembly of claim 9 wherein the processing element is in operative communication with the calibrator for recalibrating the biological parameter sensor to a recalibrated biological parameter range according to the biological parameter change status.

11. The assembly of claim 9 further comprising a feedback element connected to the support web for performing an action on the target surface for performing the action in response to the biological parameter alert status.

12. The assembly of claim 1 further comprising a feedback element connected to the support web for performing an action on the target surface for performing the action in response to the first alert status.

13. The assembly of claim 1 wherein the support web comprises a treatment portion for contacting sensitive skin.

14. The assembly of claim 1 wherein the support web comprises an adhesive material for adhering the support web to the target surface.

15. A method of acquiring pressure data comprising:

applying a first pressure sensor to a target surface of a body of an individual;

sensing by the first pressure sensor at a first frequency, a first pressure applied to the target surface;

calibrating, by a calibrator, the first pressure sensor to a first pressure range within which the first pressure sensor senses the first pressure;

providing first measurement parameters comprising a first threshold value corresponding to a first threshold pressure, a first measurement time period, a first alert value, and a first change condition;

comparing by a processor, the first pressure to the first threshold pressure to provide a first comparative pressure;

integrating, by the processor, the first comparative pressure over the first time measurement period to provide a first integrated pressure;

comparing, by the processor, the first integrated pressure with the first alert value to determine a first alert status;

comparing, by the processor, the first integrated pressure with the first change condition to determine a first change status;

changing, by the processor, at least one measurement parameter or recalibrating the first pressure range to the first recalibrated pressure range, according to the first change status; and

displaying, at an output device, at least one of the first integrated pressure, the first alert status, and the first change status.

16. The method of claim 15 further comprising:

applying a second pressure sensor to the target surface;

sensing by the second pressure sensor, at a second frequency a second pressure applied to the target surface;

calibrating, by the processor, the second pressure sensor to a second pressure range within which the second pressure sensor senses the second pressure;

providing second measurement parameters comprising a second threshold value corresponding to a second threshold pressure, a second measurement time period, a second alert value, and a second change condition;

comparing the second pressure to the second threshold pressure to provide a second comparative pressure;

integrating, by the processor, the second comparative pressure over the second time measurement period to provide a second integrated pressure;

comparing the second integrated pressure with the second alert value to determine a second alert status;

comparing the second integrated pressure with the second change condition to determine a second change status;

changing at least one measurement parameter or recalibrating the second pressure range to the second recalibrated pressure range, according to the second change status; and

displaying at least one of the second integrated pressure, the second alert status, and the second change status.

17. The method of claim 16 wherein displaying the first integrated pressure, the first alert status, the second integrated pressure, and the second alert status comprises visually displaying data of the first and second comparative pressures and the relative locations of the first and second pressure sensors on the target area.

18. The method of claim 15 further comprising:

applying a biological parameter sensor to the target surface;

sensing at a biological parameter frequency a biological parameter at the target surface;

providing measurement parameters comprising a biological parameter threshold value corresponding to a biological parameter threshold, a biological parameter measurement time period, a biological parameter alert value, and a biological parameter change condition;

comparing the biological parameter to the biological parameter threshold pressure to provide a comparative biological parameter value;

integrating, by the processor, the comparative biological parameter over the biological parameter time measurement period to provide an integrated biological parameter pressure;

comparing the integrated biological parameter with the biological parameter alert value to determine a biological parameter alert status;

comparing the integrated biological parameter with the biological parameter change condition to determine a biological parameter change status;

changing at least one measurement parameter or recalibrating the first pressure range to the first recalibrated pressure range, according to the biological parameter change status; and

displaying, at the output device, at least one of the integrated biological parameter value, the biological parameter alert status, and the biological parameter change status.