Sudden infant death syndrome monitor

• US 5,505,199 A
• Filed: 12/01/1994
• Issued: 04/09/1996
• Est. Priority Date: 12/01/1994
• Status: Expired due to Fees

• Current Assignee: Audrey H. Kim, Letitia C. Lau, Steven P. Lau
• Original Assignee: Audrey H. Kim, Letitia C. Lau, Steven P. Lau
• Inventors: Kim, Bill H.
• Primary Examiner(s): Sykes, Angela D.
• Assistant Examiner(s): WINAKUR, ERIC FRANK
• Application Number:
  US08/347,753
• Time in Patent Office: 495 Days
• Field of Search: 128/633, 128/664, 128/716, 128/721, 128/723, 348/143, 348/210-214
• US Class Current: 600/323
• CPC Class Codes: A61B 2503/04 Babies, e.g. for SIDS detection
• CPC Class Codes: A61B 2503/06 Children, e.g. for attention deficit diagnosis
• 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 5/14551 for measuring blood gases
• CPC Class Codes: A61B 5/4818 Sleep apnoea
• 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
• 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

Abstract

A sudden infant death syndrome, SIDS, monitor which monitors the infant to determine oxygen desaturation and movement. No alarm indication is produced if movement is detected, a low alarm condition is produced if desaturation occurs while movement is detected and a high condition is produced if desaturation is occurs and no movement is detected. A video monitor is provided to bring the image of the infant into the presence of the caregiver when either alarm is produced. The substantially reduced number of false alarms, due for example to motion artifacts, improves the level of alarm response over the long term that can reasonably be provided by parents and caregivers.

Claims

1. A SIDS monitor comprising:

oxygen desaturation detector means adapted to be applied to an infant to be monitored for detecting oxygen desaturation of said infant;

movement detector means for detecting movement of the infant;

video camera means for producing real time video images of the infant;

video display means responsive to the video camera means for displaying said real time video images to a parent or other caregiver; and

alarm processing circuitry means

for activating the video display means to display said real time video images when oxygen desaturation and movement are detected by said oxygen desaturation detection means and said movement detector mean, and

for activating the video display means to display said real time video images and for producing a first level of alarm, when oxygen desaturation is detected by said oxygen desaturation detection means and movement is not detected by said movement detector means.

2. The invention of claim 1, wherein the alarm processing circuitry means further comprises:

alarm circuitry means for activating a second level of alarm when oxygen desaturation and movement are detected by said oxygen desaturation detection means and said movement detector means, said second level of alarm being a lower level of alarm than said first level of alarm.

3. A method of monitoring an infant for SIDS, comprising the steps of:

detecting oxygen desaturation of an infant to be monitored;

detecting movement of the infant;

capturing real time images of the infant;

displaying said real time video images of the infant to a parent or caregiver when oxygen desaturation is detected; and

alerting the parent or caregiver with a first alarm when oxygen desaturation is detected if movement is not detected.

4. The invention of claim 3, further comprising the step of:

alerting the parent or caregiver with a second alarm when oxygen desaturation is detected and movement is also detected.

5. The invention of claim 4, wherein the step of alerting the parent or caregiver with a second alarm further comprises the step of:

producing the second alarm at a lower level of alarm than the first alarm.