Infant warming and sensor mat

• US 7,636,594 B2
• Filed: 09/09/2004
• Issued: 12/22/2009
• Est. Priority Date: 09/10/2003
• Status: Expired due to Fees

• Current Assignee: Maternus Partners, Ltd.
• Original Assignee: Maternus Partners, Ltd.
• Inventors: Watson, Richard L. Jr.
• Primary Examiner(s): Winakur; Eric F
• Application Number:
  US10/571,450
• Publication Number:
  US 20070270670A1
• Time in Patent Office: 1,930 Days
• Field of Search: 600/310, 600/322, 600/323, 600/324, 600/340, 607/104, 607/107, 607/108
• US Class Current: 600/323
• CPC Class Codes: A61B 5/024 Detecting, measuring or recording pulse rate or heart rate A61B5/0205, A61B5/021 take precedence
• CPC Class Codes: A61B 5/14551 for measuring blood gases
• CPC Class Codes: A61B 5/6892 Mats
• CPC Class Codes: A61F 2007/0001 Body part
• CPC Class Codes: A61F 2007/006 of gas
• CPC Class Codes: A61F 7/02 Compresses or poultices for effecting heating or cooling

Abstract

An infant warming and sensor mat for keeping a baby warm and monitoring the baby'"'"'s haemoglobin oxygen saturation level (SaO₂) and heart rate. The mat preferably comprises a bottom layer of compressible padding material, a sensor layer comprising a plurality of light sources and light detectors, a cover layer having multiple openings, and an air layer between the sensor layer and cover layer. Warm air supplied to the air layer escapes through the openings in the cover to warm the baby. The light sources shine light of an appropriate wavelength onto the baby through the openings in the cover, and the light detectors sense the amount of light reflected back from the baby, which is indicative of SaO₂ level. Heart rate is also determined from the resulting periodic signal.

Claims

1. An infant warming and sensor mat comprising:

a compressible layer for supporting the weight of an infant patient;

a plurality of light sources;

a sensor layer having a plurality of light detectors contained therein;

a cover layer, wherein said cover layer overlays said sensor layer, and allows passage of light therethrough;

at least one of said plurality of light sources being oriented to transmit light through said cover layer to a patient supported by said compressible layer;

a computer processor in communication with said plurality of light detectors; and

wherein, when a patient is placed upon said mat, at least one of said plurality of light sources and at least one of said plurality of light detectors cooperate with said computer processor to calculate a hemoglobin oxygen saturation level of the patient based on an amount of said light reflected from the patient.

2. The infant warming and sensor mat of claim 1 wherein said computer processor further calculates a heart rate of the patient.

3. The infant warming and sensor mat of claim 1, wherein light emitted by at least one of said plurality of light sources includes light having a range of wavelengths.

4. The infant warming and sensor mat of claim 1, wherein light emitted by at least one of said plurality of light sources has a single wavelength.

5. The infant warming and sensor mat of claim 1 further comprising a display monitor for displaying a representation of at least one of said hemoglobin oxygen saturation level and a heart rate of the patient.

6. An infant warming and sensor mat comprising;

a sensor layer, wherein a plurality of light sources and a plurality of light detectors are contained therein;

a cover layer, wherein said cover layer overlays said sensor layer and said cover layer has a plurality of openings therethrough;

at least one of said plurality of light sources being oriented to shine light through at least one of said openings in said cover layer;

a computer processor in communication with said plurality of light detectors;

wherein, when a baby is placed upon said mat, at least one of said plurality of light sources and at least one of said plurality of light detectors cooperate with said computer processor to calculate a hemoglobin oxygen saturation level of the baby based on an amount of said light reflected from the baby;

an air layer between said sensor layer and said cover layer;

an air supply for providing warm air to said air layer, and wherein, when the baby is placed upon said mat, said warm air escapes through at least one of said plurality of openings to warm the baby.

7. An infant warming and sensor mat comprising:

a padding layer;

a sensor layer adjacent said padding layer, said sensor layer comprising a plurality of light sources and a plurality of light detectors;

a cover layer having a plurality of openings therein;

an air layer between said sensor layer and said cover layer, said plurality of light sources being oriented to shine light through said plurality of openings;

an air supply for providing warm air to said air layer; and

a computer processor in communication with said plurality of light detectors;

wherein, when a baby is placed upon said mat, said warm air escapes through at least one of said plurality of openings to warm the baby, and at least one of said plurality of light sources and at least one of said plurality of light detectors cooperate with said computer processor to calculate a hemoglobin oxygen saturation level of the baby based on an amount of said light reflected from the baby.

8. The infant warming and sensor mat of claim 7 wherein said computer processor further calculates a heart rate of the baby.

9. The infant warming and sensor mat of claim 7, wherein light emitted by at least one of said plurality of light sources includes light having a range of wavelengths.

10. The infant warming and sensor mat of claim 7, wherein light emitted by at least one of said plurality of light sources has a single wavelength.

11. The infant warming and sensor mat of claim 7 further comprising a display monitor for displaying a representation of at least one of said hemoglobin oxygen saturation level and a heart rate of the baby.