Pulse photometry probe

• US 9,808,166 B2
• Filed: 06/24/2009
• Issued: 11/07/2017
• Est. Priority Date: 06/24/2008
• Status: Active Grant

• Current Assignee: Nihon Kohden Corporation
• Original Assignee: Nihon Kohden Corporation
• Inventors: Takeuchi, Masahiro, Todokoro, Noriaki
• Primary Examiner(s): WEARE, MEREDITH H
• Application Number:
  US12/491,211
• Publication Number:
  US 20090318819A1
• Time in Patent Office: 3,058 Days
• Field of Search: 600481, 600500-503
• CPC Class Codes: A61B 2562/164 the sensor is mounted in or on a conformable substrate or carrier
• CPC Class Codes: A61B 5/0059 using light, e.g. diagnosis by transillumination, diascopy, fluorescence A61B5/0093, A61B5/1455, A61B5/02416 and A61B5/0261 take precedence
• CPC Class Codes: A61B 5/02444 Details of sensor A61B5/02427 takes precedence
• CPC Class Codes: A61B 5/0261 using optical means, e.g. infrared light
• CPC Class Codes: A61B 5/14552 Details of sensors specially adapted therefor
• CPC Class Codes: A61B 5/6826 Finger
• CPC Class Codes: A61B 5/6829 Foot or ankle
• CPC Class Codes: A61B 5/6838 Clamps or clips

Abstract

A pulse photometry probe includes: a light emitter having a first face from which light is emitted toward a living body; a light receiver having a second face which receives the light from the living body; a surface sheet which faces the first face of the light emitter and the second face of the light receiver; a cover sheet in which at least one slit is formed; and a lead wire which includes: a first lead wire connected to one of the light emitter and the light receiver; a second lead wire connected to the other one of the light emitter and the light receiver; and a basal portion at which the first lead wire and the second lead wire are bundled. The second lead wire includes at least one slack portion between the basal portion and the other one of the light emitter and the light receiver.

Claims

1. A pulse photometry probe comprising:

a light emitter having a first face from which light is emitted toward a living body;

a light receiver having a second face which receives the light from the living body;

a surface sheet which faces the first face of the light emitter and the second face of the light receiver;

a cover sheet in which at least one slit is formed, the light emitter and the light receiver which are disposed between the surface sheet and the cover sheet; and

a lead wire which includes;

a first lead wire connected to one of the light emitter and the light receiver;

a second lead wire connected to the other one of the light emitter and the light receiver; and

a basal portion at which the first lead wire and the second lead wire are bundled, wherein the second lead wire includes at least one slack portion between the basal portion and the other one of the light emitter and the light receiver,

wherein the pulse photometry probe is configured to circumferentially wrap around an axis extending from a proximal end to a distal end of an appendage and,

wherein the at least one slit is configured to reduce aperture formation and thereby reduce interference from ambient light when the pulse photometry probe is wrapped around the axis extending from the proximal end to the distal end of the appendage.

2. The pulse photometry probe according to claim 1, further comprising a first sheet which covers the surface sheet and the cover sheet.

3. The pulse photometry probe according to claim 2, wherein the basal portion is covered by at least one of the cover sheet and the first sheet.

4. The pulse photometry probe according to claim 1, wherein the slit passes through the cover sheet.

5. The pulse photometry probe according to claim 1, wherein the slit has a bottom portion on the cover sheet without passing through the cover sheet.

6. The pulse photometry probe according to claim 1, wherein the second lead wire extends toward the other one of the light emitter and the light receiver at an angle, which is 30 degrees or more, from the basal portion, with respect to a direction in which the light emitter and the light receiver are arranged.

7. The pulse photometry probe according to claim 1, wherein a light intensity adjuster is disposed on a portion of the surface sheet, and the portion of the surface sheet faces the second face of the light receiver.

8. The pulse photometry probe according to claim 1, further comprising a second sheet to be in contact with the living body, wherein the surface sheet includes a third face which faces the light emitter and the light receiver and a fourth face opposite to the third face, and the second sheet faces the fourth face of the surface sheet.

9. The pulse photometry probe according to claim 8, wherein a light intensity adjuster is disposed in a portion of the second sheet, and the portion of the second sheet faces the second face of the light receiver.

10. The pulse photometry probe according to claim 1, wherein the slit enables the cover sheet to be elastic in a direction in which the light emitter and the light receiver are arranged.

11. The pulse photometry probe according to claim 1, wherein the cover sheet protects the light emitter and the light receiver.

12. The pulse photometry probe according to claim 1, wherein the slack portion attains an adequate length of the second lead wire, when the pulse photometry probe is attached to the living body.

13. The pulse photometry probe according to claim 1, wherein the slit extends in a direction perpendicular to a longitudinal direction of the cover sheet.

14. The pulse photometry probe according to claim 1, wherein the slit is disposed between a first portion of the cover sheet facing the light emitter and a second portion of the cover sheet facing the light receiver.

15. The pulse photometry probe according to claim 1, wherein a plurality of the slits are formed in the cover sheet.

16. The pulse photometry probe according to claim 1, wherein the slack portion has a shape including at least one bent portion.

17. The pulse photometry probe according to claim 1, wherein the at least one slit is formed in a portion between the light emitter and the light receiver.

18. The pulse photometry probe according to claim 1, wherein the appendage is one of a finger and a toe.