Non-adhesive flexible electro-optical sensor for fingertip trans-illumination

• US 20030171662A1
• Filed: 03/07/2002
• Published: 09/11/2003
• Est. Priority Date: 03/07/2002
• Status: Abandoned Application

• Current Assignee: Epic Medical Products, Inc.
• Original Assignee: Epic Medical Products, Inc.
• Inventors: Secunda, Jeffrey Albert, Patton, Tracie Lynn, OʼConnor, Michael William
• Application Number:
  US10/092,827
• Publication Number:
  US 20030171662A1
• Time in Patent Office: Days
• US Class Current: 600/323
• CPC Class Codes: A61B 5/14552 Details of sensors specially adapted therefor

Abstract

A sensor for trans-illumination of a blood perfused portion of a patient. The sensor includes a flexible, initially substantially planar web-like support structure which has an adhesive layer on an upper surface thereof and a loop fabric backing on a lower surface thereof, a light source and a photo-sensor are mounted to the adhesive layer and a compressible foam layer having apertures which overlie the light source and the photo-sensor is mounted to the adhesive layer. A hook fabric tab is mounted to one end of the web-like support structure so that the web-like support structure maybe wrapped around and secured to a patient'"'"'s finger, toe, hand or foot.

Claims

1. A non-invasive electro-optical sensor for removable attachment to a patient for use in measuring light extinction during trans-illumination of the blood perfused tissue within the patient, said sensor comprising:

a flexible, initially substantially planar web-like support structure having an adhesive layer on an upper surface thereof and a loop fabric backing on a lower surface thereof;

a light source mounted on said adhesive layer of said substantially planar web-like support structure, said light source having a light emitting surface facing away from said web-like support structure;

a photo-sensor mounted on said adhesive layer of said substantially planar web-like support structure, said photo-sensor having a light responsive surface facing away from said web-like support structure;

a compressible foam layer mounted on said adhesive layer of said flexible, initially substantially planar web-like support structure, said compressible foam layer having a first aperture overlying said light source and a second aperture overlying said photo-sensor; and

a hook fabric tab attached at one end of said flexible, initially substantially planar web-like support structure.

2. The non-invasive electro-optical sensor according to claim 1, further including a clear film patch interposed between said light source and said compressible foam layer.

3. The non-invasive electro-optical sensor according to claim 1, further including a clear film patch interposed between said photo-sensor and said compressible foam layer.

4. The non-invasive electro-optical sensor according to claim 1, wherein said compressible foam layer is between one-eighth and three-eighth inches in thickness.

5. The non-invasive electro-optical sensor according to claim 1, wherein said compressible foam layer has a densibility of between one and three pounds per cubic foot.

6. The non-invasive electro-optical sensor according to claim 1, wherein said compressible foam layer is constructed of polyether polyurethane.

7. The non-invasive electro-optical sensor according to claim 1, wherein said light source and said photo-sensor are disposed a sufficient distance apart such that said light source and said photo-sensor are disposed opposite each other when said web-like support structure is wrapped around a patient'"'"'s finger.

8. The non-invasive electro-optical sensor according to claim 1, wherein said light source and said photo-sensor are disposed a sufficient distance apart such that said light source and said photo-sensor are disposed opposite each other when said web-like support structure is wrapped around an infant'"'"'s foot.