Instrumented laser diode probe connector

• US 5,851,178 A
• Filed: 06/02/1995
• Issued: 12/22/1998
• Est. Priority Date: 06/02/1995
• Status: Expired due to Term

• Current Assignee: Datex-Ohmeda Incorporated (General Electric Company)
• Original Assignee: Ohmeda, Inc. (Linde Plc)
• Inventors: Aronow, Kurt Albert
• Primary Examiner(s): Shay, David M.
• Application Number:
  US08/458,485
• Time in Patent Office: 1,299 Days
• Field of Search: 128/632-634, 128/664-666, 600/310-344
• US Class Current: 600/323
• CPC Class Codes: A61B 2562/225 Connectors or couplings
• CPC Class Codes: A61B 5/02433 for infrared radiation
• CPC Class Codes: A61B 5/14552 Details of sensors specially adapted therefor
• CPC Class Codes: A61B 5/6826 Finger
• CPC Class Codes: A61B 5/6838 Clamps or clips

Abstract

This apparatus places the laser diode light source in the connector affixed to the distal end of the cable, proximate to the patient. The disposable portion of the probe simply consists of the apparatus required to affix the probe to the patient'"'"'s appendage and the mating portion of the connector that interconnects with the cable. The disposable portion of the probe can be a minimalistic design since all the expensive elements are located in the medical monitoring instrument or the cable connector.

Claims

1. Apparatus for illuminating tissue of a subject to measure light absorption of said tissue by a measurement system, comprising:

an interconnector cable wherein said interconnector cable comprises;

a first connector segment having an opening in one side thereof;

at least two laser diode light sources, mounted in said first connector segment, for generating at least two beams of light of different wavelengths for application to said tissue through said opening;

a plurality of electrical conductors electrically interconnected between said at least two laser diode light sources and said measurement system;

a probe wherein said probe comprises;

a second connector segment, removably interconnectable with said first connector segment, for interfacing said interconnector cable with said probe;

wherein said second connector segment includes an optical port for transmitting said at least two beams of light to said tissue wherein said optical port is located substantially adjacent said opening of said first connector segment when said first connector segment is removably interconnected with said second connector segment; and

attachment means connected to said second connector segment adapted for removably attaching said probe to said subject.

2. The apparatus of claim 1 wherein said optical port comprises:

an optically transmissive window for transmitting said generated beams of light from said first connector segment through said second connector segment to said tissue, when said first and second connector segments are interconnected.

3. The apparatus of claim 1 wherein said attachment means comprises:

a flexible support structure for securing said light sources and said light detector means in optical contact with said subject.

4. The apparatus of claim 1 wherein said probe further comprises:

light detector means for producing signals indicative of a light intensity of said at least two beams of light received from said tissue of a subject.

5. The apparatus of claim 4 wherein said probe further comprises:

at least two electrical conductors interconnected at a first end thereof to said light detector means and connectable by said first and second connector segments at a second end thereof to mating ones of said plurality of electrical conductors in said interconnector cable to interconnect said light detector means with said measurement system.

6. The apparatus of claim 5 wherein said second end of said at least two electrical conductors are interconnected with said plurality of electrical conductors by a pin and socket connector system located in said first and second connector segments.

7. The apparatus of claim 1 wherein said interconnector cable further comprises:

means for latching said first and second connector segments.

8. The apparatus of claim 7 wherein said latching means includes an opening of predetermined geometric shape in said first connector segment to receive a tab element included in said second connector segment when said first connector segment is interconnected with said second connector segment.

9. The apparatus of claim 8 wherein said latching means further comprises a user activated spring to release said tab element from said opening when said first connector segment is interconnected with said second connector segment.

10. The apparatus of claim 1 wherein said attachment means comprises:

a first housing section;

a second housing section hingeably attached to said first housing section to form a clamshell-type housing, said first and said second sections being rotatable between an open and a closed position and having an aperture in one end thereof when in said closed position to receive a member of a patient, with said first and said second housing sections both having an interior surface facing each other and an exterior surface.

11. The apparatus of claim 10 wherein said first housing section includes:

notch means for securing said plurality of conductors to said first housing section.

12. The apparatus of claim 10 wherein said second housing section includes a depression in said interior surface of said second housing section and of topology to substantially match the contours of said member.

13. The apparatus of claim 10 wherein said releasably attaching means further comprises:

spring means for biasing said first and said second housing sections in their closed position.

14. The apparatus of claim 10 wherein said attachment means further comprises:

adhesive sheet means attached to said interior surface of said second housing section for attaching said second housing section to said member when said first and said second sections are in said closed position to place said adhesive sheet means in contact with said member positioned between said first and said second housing sections.

15. The apparatus of claim 14 wherein said attachment means further comprises:

deformable means attached to said interior surface of said first housing section for compliantly conforming to said member when said first and said second housing members are in said closed position to place said deformable means in contact with said member.

16. Apparatus for illuminating tissue of a subject to measure light absorption of said tissue by a measurement system, comprising:

a first connector segment having an opening on one side thereof;

at least two laser diode light sources, mounted in said first connector segment, for generating at least two beams of light of different wavelengths for application to said tissue through said opening;

a plurality of electrical conductors electrically interconnected between said at least two laser diode light sources and said measurement system;

at least two electrical connector contacts mounted in said first connector segment and connected to a like number of said plurality of electrical conductors;

a second connector segment, removably interconnectable with said first connector segment, having at least two electrical connector contacts for mating with said at least two electrical connector contacts mounted in said first connector segment when said first and second connector segments are interconnected;

means, attached to said second connector segment, adapted for removably attaching said second connector segment to said subject;

means for applying said at least two beams of light to said tissue wherein said applying means comprises an optical port located in said second connector segment substantially adjacent said opening in said first connector segment when said first connector segment is removably interconnected with said first connector segment; and

light detector means, connected to said at least two electrical connector contacts in said interior surface of said second connector segment, for producing signals indicative of a light intensity of said at least two beams of light received from said tissue of a subject.

17. The apparatus of claim 16 wherein said removably attaching means comprises:

a flexible support structure for securing said light sources and said light detector means in optical contact with said subject.

18. The apparatus of claim 16 wherein said applying means comprises;

an optically transmissive window disposed in said second connector segment wherein said generated beams of light from said first connector segment are optically transmitted through said window in said second connector segment to impinge on said tissue, when said first and second connector segments are removably interconnected.

19. The apparatus of claim 16 wherein said removably attaching means comprises:

a first housing section;

a second housing section hingeably attached to said first housing section to form a clamshell-type housing, said first and said second sections being rotatable between an open and a closed position and having an aperture in one end thereof when in said closed position to receive a member of a patient, with said first and said second housing sections both having an interior surface facing each other and an exterior surface.

20. The apparatus of claim 19 wherein said removably attaching means further comprises:

adhesive sheet means attached to said interior surface of said second housing section for attaching said second housing section to said member when said first and said second sections are in said closed position to place said adhesive sheet means in contact with said member positioned between said first and said second housing sections.

21. The apparatus of claim 20 wherein said removably attaching means further comprises:

deformable means attached to said interior surface of said first housing section for compliantly conforming to said member when said first and said second housing members are in said closed position to place said deformable means in contact with said member.

22. The apparatus of claim 16 wherein said interconnection means further comprises:

means for latching said first and second connector segments.

23. The apparatus of claim 22 wherein said latching means includes an opening of predetermined geometric shape in said first connector segment to receive a tab element included in said second connector segment when said first connector segment is interconnected with said second connector segment.

24. The apparatus of claim 23 wherein said latching means further comprises a user activated spring to release said tab element from said opening when said first connector segment is interconnected with said second connector segment.

25. The apparatus of claim 24 wherein said first housing section includes:

notch means for securing said plurality of conductors to said first housing section.

26. The apparatus of claim 24 wherein said second housing section includes a depression in said interior surface of said second housing section and of topology to substantially match the contours of said member.

27. The apparatus of claim 24 wherein said releasably attaching means further comprises:

spring means for biasing said first and said second housing sections in their closed position.