Combination SPO2/temperature measuring apparatus

• US 6,850,789 B2
• Filed: 07/29/2002
• Issued: 02/01/2005
• Est. Priority Date: 07/29/2002
• Status: Expired due to Fees

• Current Assignee: Welch Allyn Incorporated
• Original Assignee: Welch Allyn Incorporated
• Inventors: Schweitzer, Frederick F. Jr., Lia, Raymond A., Vivenzio, Robert L., Danna, Dominick, Burdick, Kenneth J.
• Primary Examiner(s): WINAKUR, ERIC FRANK
• Application Number:
  US10/207,532
• Publication Number:
  US 20040019293A1
• Time in Patent Office: 918 Days
• Field of Search: 600/323, 600/324, 600/325, 600/339, 600/340, 600/344, 600/549, 600/481, 600/483, 600/500, 600/502, 600/519
• US Class Current: 600/340
• CPC Class Codes: A61B 5/01 Measuring temperature of body parts ; Diagnostic temperature sensing, e.g. for malignant or inflamed tissue clinical contact thermometers G01K13/20
• CPC Class Codes: A61B 5/14552 Details of sensors specially adapted therefor
• CPC Class Codes: A61B 5/1459 invasive, e.g. introduced into the body by a catheter A61B5/1464 takes precedence
• CPC Class Codes: A61B 5/1491 Heated applicators

Abstract

A medical diagnostic instrument includes at least one blood oxygen saturation sensor and at least one temperature sensor. The sensors are being capable of measuring blood oxygen saturation and temperature simultaneously after insertion of a probe portion of the instrument relative to a defined body site, such as the axilla, rectum, or sublingual pocket of a patient. At least a portion of the probe portion of the instrument is disposable.

Claims

1. A medical diagnostic instrument comprising:

a hollow elongate probe portion which is insertable into a body site;

means for measuring the blood oxygen saturation of a patient;

means for measuring the temperature of the patient, each of said measuring means being arranged within said elongate probe portion and capable of measuring simultaneously with the other of said measuring means, said blood oxygen saturation measuring means including at least one light transmitter and at least one light detector and said temperature measuring means including at least one temperature sensing element; and

a transparent sheath sized for covering said probe portion.

2. The instrument of claim 1, wherein said body site is the axilla of a patient into which said elongate probe portion can be inserted.

3. The instrument of claim 1, further including means for measuring the pulse rate of a patient disposed within said elongate probe portion of said instrument.

4. The instrument of claim 1, including display means for displaying at least one of said measured parameters.

5. The instrument of claim 1, wherein said body site is the sublingual pocket of a patient into which said elongate probe portion of said instrument can be inserted.

6. The instrument of claim 1, wherein said body site is the rectum into which said elongate probe portion of said instrument can be inserted.

7. The instrument of claim 1, wherein said temperature sensing element is disposed at a distal end thereof and in which said at least one light transmitter and at least one light detector are arranged adjacent to said temperature sensing element.

8. The instrument of claim 7, wherein said at least one light transmitter and light detector includes at least one optical fiber disposed in the distal end of said probe portion, said at least one optical fiber being capable of at least one of transmitting and receiving light relative to a said body site.

9. The instrument of claim 1, including at least one light transmitter and at least one light sensor disposed in relation to at least one optical fiber disposed in the distal end of said hollow elongate probe portion, said at least one optical fiber being capable of transmitting and receiving light relative to said body site, said at least one light transmitter and said at least one light sensor being disposed remotely from the distal end of said probe portion.

10. The instrument of claim 1, wherein said temperature measuring means includes at least one thermistor and resistance measuring means connected electrically to said at least one thermistor, wherein said at least one thermistor is disposed in a distal end of said probe portion.

11. The instrument of claim 1, wherein said temperature measuring means includes at least one thermocouple.

12. The instrument of claim 1, wherein said probe portion includes a substrate having said blood oxygen saturation means and said temperature measuring means disposed thereupon.

13. The instrument of claim 1, wherein said temperature measuring means includes at least one heater element disposed in relation to said at least one temperature sensing element.

14. The instrument of claim 1, wherein said blood oxygen saturation measuring means includes a pulse oximeter portion including said at least one light transmitter for transmitting light at said body site and said at least one light detector for detecting light reflected from said body site, said at least one light transmitter and said at least one light detector being arranged such that heat generated from said pulse oximeter portion is isolated from said temperature measuring means.

15. An instrument as recited in claim 1, wherein said transparent sheath provides a reflective path for said at least one of said at least one light transmitter and at least one light detector.

16. The instrument of claim 1, wherein said blood oxygen saturation measuring means includes a pulse oximeter portion, said pulse oximeter portion including said at least one light transmitter for transmitting light at said body site and said at least one light detector for detecting light reflected from said body site, said at least one light transmitter and said at least one light detector being arranged such that heat generated from said pulse oximeter portion can be used to heat the temperature sensing element to a predetermined temperature.

17. The instrument of claim 1, wherein the at least one light transmitter and at least one light detector of said blood oxygen saturation measuring means permits a user to detect the time said instrument is initially inserted in relation to said body site.

18. The instrument of claim 17, wherein said body site is the sublingual pocket into which said elongate probe portion can be inserted.

19. A medical diagnostic instrument comprising:

a hollow elongate probe portion which is insertable into a body site;

means for measuring the blood oxygen saturation of a patient;

means for measuring the temperature of the patient, each of said measuring means being arranged within said elongate probe portion and capable of measuring simultaneously with the other of said measuring means, wherein said temperature measuring means includes at least one temperature sensing element and at least one heater element disposed in relation to said at least one temperature sensing element.

20. The instrument of claim 19, wherein said body site is the axilla of a patient into which said hollow elongate probe portion can be inserted.

21. The instrument of claim 19, further including means for measuring the pulse rate of a patient disposed within said hollow elongate probe portion of said instrument.

22. The instrument of claim 21, wherein said blood oxygen saturation measuring means permits a user to detect the time said elongate probe portion is initially inserted in relation to said body site.

23. The instrument of claim 22, wherein said body site is the sublingual pocket into which the elongate probe portion of said instrument can be inserted.

24. The instrument of claim 19, wherein said blood oxygen saturation measuring means includes at least one light transmitter and at least one light detector.

25. The instrument of claim 24, wherein said temperature sensing element is disposed at a distal end thereof and in which said at least one light transmitter and at least one light detector are arranged adjacent to said temperature sensing element.

26. The instrument of claim 25, wherein said at least one light transmitter and said at least one light detector includes at least one optical fiber disposed in the distal end of said probe portion, said at least one optical fiber being capable of at least one of transmitting and receiving light relative to a said body site.

27. The instrument of claim 26, including at least one light transmitter and one light sensor disposed in relation to said at least one optical fiber remotely from the distal end of said probe portion.

28. An instrument as recited in claim 24, including a transparent sheath sized for covering said elongate probe portion.

29. An instrument as recited in claim 28, wherein said transparent sheath provides a reflective path for said at least one of said at least one light emitter and at least one light detector.

30. An instrument as recited in claim 28, wherein said transparent sheath is disposable.

31. The instrument of claim 19, including display means for displaying at least one of said measured parameters.

32. The instrument of claim 19, wherein said body site is the sublingual pocket of a patient into which said elongate probe portion of said instrument can be inserted.

33. The instrument claim 19, wherein said body site is the rectum into which said elongate probe portion of said instrument can be inserted.

34. The instrument of claim 19, wherein said temperature measuring means includes at least one thermistor and resistance measuring means connected electrically to said at least one thermistor, wherein said at least one thermistor is disposed in a distal end of said elongate probe portion.

35. The instrument of claim 19, wherein said temperature measuring means includes at least one thermocouple.

36. The instrument of claim 19, wherein said probe portion includes a substrate having said blood oxygen saturation means and said temperature measuring means disposed thereupon.

37. The instrument of claim 19, wherein said blood oxygen saturation volume measuring means includes a pulse oximeter portion including at least one light emitter for transmitting light at a said body site and at least one light detector for detecting light reflected from said body site, said at least one light emitter and said at least one light detector being arranged such that heat generated from said pulse oximeter portion is isolated from said temperature measuring means.

38. The instrument of claim 19, wherein said blood oxygen saturation measuring means includes a pulse oximeter portion, said pulse oximeter portion including at least one light transmitter for transmitting light at said body site and at least one light detector for detecting light reflected from said body site, said at least one light transmitter and said at least one light detector being arranged such that heat generated from said pulse oximeter portion can be used to heat the temperature sensing element to a predetermined temperature.

39. A medical diagnostic instrument comprising:

a hollow elongate probe portion which is insertable into a body site;

means for measuring the blood oxygen saturation of a patient; and

means for measuring the temperature of the patient, each of said measuring means being arranged within said elongate probe portion and capable of measuring simultaneously with the other of said measuring means and used within a defined body site of a patient, wherein said blood oxygen saturation measuring means includes a pulse oximeter portion, said pulse oximeter portion including at least one light transmitter for transmitting light at said body site and at least one light detector for detecting light reflected from said body site, said at least one light transmitter and said at least one light detector being arranged such that heat generated from said pulse oximeter portion can be used to heat the temperature measuring means to a predetermined temperature.

40. The instrument of claim 39, wherein said body site is the axilla of a patient into which said hollow elongate probe portion can be inserted.

41. The instrument of claim 39, further including means for measuring the pulse rate of a patient disposed within said elongate probe portion of said instrument.

42. The instrument of claim 39, including display means for displaying at least one of said measured parameters.

43. The instrument of claim 39, wherein said body site is the sublingual pocket of a patient into which said elongate probe portion of said instrument can be inserted.

44. The instrument of claim 39, wherein said body site is the rectum into which said elongate probe portion of said instrument can be inserted.

45. The instrument of claim 39, wherein said temperature measuring means includes at least one temperature sensing element disposed at a distal end of said instrument and in which said at least one light transmitter and said at least one light detector are arranged adjacent to said at least one temperature sensing element.

46. The instrument of claim 45, wherein said at least one light transmitter and light receiver includes at least one optical fiber disposed in the distal end of said elongate probe portion, said at least one optical fiber being capable of at least one of transmitting and receiving light relative to said body site.

47. The instrument of claim 39, wherein said temperature measuring means includes at least one thermistor and resistance measuring means connected electrically to said at least one thermistor, wherein said at least one thermistor is disposed in a distal end of said probe portion.

48. The instrument of claim 39, wherein said temperature measuring means includes at least one thermocouple.

49. The instrument of claim 39, said probe portion includes a substrate having said blood oxygen saturation means and said temperature measuring means disposed thereupon.

50. An instrument as recited in claim 39, including a transparent sheath sized for covering said probe portion.

51. An instrument as recited in claim 50, wherein said transparent sheath provides a reflective path for said at least one of said at least one light transmitter and at least one light detector.

52. The instrument of claim 39, wherein the at least one light detector and at least one light transmitter of said blood oxygen saturation measuring means permits a user to detect the time said instrument is initially inserted in relation to said body site.

53. The instrument of claim 52, wherein said body site is the sublingual pocket.

54. A medical diagnostic instrument comprising:

a hollow elongate probe portion which is insertable into a body site;

means for measuring the blood oxygen saturation of a patient; and

means for measuring the temperature of the patient, each of said measuring means being arranged within said elongate probe portion and capable of measuring simultaneously with the other of said measuring means and used within a defined body site of a patient, wherein said blood oxygen saturation measuring means includes a pulse oximeter portion including said at least one light transmitter for transmitting light at said body site and said at least one light detector for detecting light reflected from said body site, said at least one light transmitter and said at least one light detector being arranged such that heat generated from said pulse oximeter portion is isolated from said temperature measuring means.