A Mobile Wireless Electrocardiogram System for Health Care Facilities

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Final Report

A Mobile Wireless Electrocardiogram System for Health Care Facilities

ECE4007 Senior Design Project

Section L01, J and the Three J’s

Joe Richard, Team Leader
John Farner
Jason Fritts
Julian Jaeger


December 5, 2007


Executive Summary3



2.Project Description and Goals6

3.Technical Specification7

4.Design Approach and Details

4.1Design Approach8
4.2Codes and Standards11
4.3Constraints, Alternatives, and Tradeoffs12

5.Schedule, Tasks, and Milestones14

6.Project Demonstration15

7.Marketing and Cost Analysis16

7.1Marketing Analysis16
7.2Cost Analysis16



Appendix A21

Appendix B22

The Mobile Wireless Electrocardiogram (EKG) is a medical telemetry instrument used by medical personnel to monitor a patient’s EKG signal while allowing the patient to remain fully mobile and comfortable. This EKG measures small electrical signals from the patient’s chest caused by the heart beating. Using these signals, doctors and other medical staff can monitor the patient’s well being and predict future problems. While EKGs are commonly used in hospitals, many patients would benefit from the ability to perform usual tasks while remaining monitored on an EKG. In environments such as nursing homes and assisted living centers this technology would allow the elderly to retain their freedom of movement and still allow nursing staff to monitor important cases and patients. The wireless data relay ability would allow many patients to be monitored from a single base station with limited staff. This feature would be valuable to hospital administrators and management. With a small fleet of these devices an entire nursing home or hospital floor could be well looked after by a small nursing staff. This design team has completed a prototype for the mobile wireless EKG unit as well as developed software for the wireless transmission and base station. The mobile unit can be worn by the patient, and can measure heart rhythm data, digitize it, and transfer it wirelessly back to the base station. At the base station the software can store the data and allow medical staff to view the EKG reading and heartbeats per minute measurement. In further design efforts battery life could be extended beyond the achieved 3.5 hours, alarms could be added to alert medical staff of problems, the packaging could be optimized, and a number of other features could be implemented to increase the unit’s ease of use and appeal to customers.

Mobile Wireless Electrocardiogram
Electrocardiograms (EKG) have long been used in the hospital environment to diagnose cardiac arrhythmias and screen for heart disease. However, until recently patients had to be tethered to the EKG machine by a few feet of wire [1]. The mobile wireless EKG system is an electrocardiogram with wireless data transmission capabilities, and a monitoring base station used to receive and monitor the patient’s condition. With the invention of the mobile EKG, patients can now move freely around their environment, allowing their caregivers to easily monitor the patient’s status at any location. 1.1Objective

The objective of this project was to provide hospitals with a wireless electrocardiogram with the ability to operate away from its monitoring station. Hospitals around the country use electrocardiograms every day to monitor patients’ heart conditions using stationary bedside EKG units. Our objective was to allow caregivers the ability to move their patients around their environments without ever having to disconnect and reconnect EKG wires. Using the same EKG design used in hospitals today, we added wireless capabilities to the unit by adding an IEEE 802.11g Wi-Fi adapter for data transmission. With the addition of a mobile battery pack, the EKG base...
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