Phoenix Ambulatory Blood Pressure Monitor Project
Sub-project: Calibration With A Blood Pressure Cuff

 

Project Description

Most doctors think of the numbers obtained with a blood pressure cuff when they think of blood pressure. The ABPM may use light, sound, changes in the arm dimensions, electric impedance, or some other method to continuously monitor blood pressure. A fundamental assumption is that the ABPM will not use a blood pressure cuff continuously because continuous occlusion of an artery will destroy tissue. A secondary assumption is that the ABPM will not use a blood pressure cuff intermittently because very frequent occlusion of an artery causes pain.

Whatever methods are used, the results must relate to blood pressure cuff measurements. The ABPM results must relate to blood pressure cuff results no matter how much better the ABPM results may be.

Calibration of the ABPM, clinical trial data, and individual patient data must always include the blood pressure cuff measurements.

A separate sphygomanometer can be used. The data can be entered into a "personal computer" automatically or manually. Then, the blood-pressure-cuff information must be entered into the ABPM and / or its special purpose computer.

Similarly, the sphygmomanometer can be attached to the special purpose computer.

This sub-project will consider a separate sphygomanometer, or an attached blood pressure cuff. The sub-project will also investigate a sphygmomanometer that has low cost for the "third world".

Part of the sub-project is the entry of sphygomanometer data, the "personal computer" used, the special purpose computer. The software for blood pressure cuff data entry is needed. Similarly, the software for calibration, clinical, and patient data is considered. Also, the information display and transfer is part of the sub-project.

Project Deliverables

• Obtain a manual sphygomanometer.
• Obtain an automatic sphygomanometer.
• Obtain a personal computer.
• List of the parameters to be entered, e.g,, patient id, diastolic bp cuff pressure, systolic bp cuff pressure, heart rate, time of day, abpm peak pressure data, abpm low pressure data, heart rate.
• A simple blood pressure cuff data entry program.
• A simple data display program.
• A simple data transfer program.
• A way to automatically enter data from an automatic sphygomanometer.
• Specification of the interval between the use of the sphygomanometer.
• Decide which sphygomanometer will be used.
• Design of an automatic sphygmomanometer that meets project constraints.
• Bill of material.
• Public invention disclosure and release.
• A written report.

Automatic Sphygmomanometer

Bladder

Cuff

Tubes

Pneumatic Connectors

Valves

Pressure chamber

Motor

Battery

Recharger

Display

Switches

Package

Labels

Testing

 

About This Page

This page is maintained by Robert J Schlentz. It was last updated on 14 June 2004.

The author(s) provide this information as a public service, and agree to place any novel and useful inventions disclosed herein into the public domain. They are not aware that this material infringes on the patent, copyright, trademark or trade secret rights of others. However, there is a possibility that such infringement may exist without their knowledge. The user assumes all responsibility for determining if this information infringes on the intellectual property rights of others before applying it to products or services.

(C) 2004 Robert J Schlentz. Copying and distribution of this page is permitted in any medium, provided this notice is preserved.

Back to the Phoenix Home Page