NON-INVASIVE MONITOR FOR MEASURING REGIONAL SATURATION OF OXYGEN

• US 20160338630A1
• Filed: 01/14/2015
• Published: 11/24/2016
• Est. Priority Date: 01/29/2014
• Status: Active Grant

• Current Assignee: Kohken Medical Co Ltd
• Original Assignee: Kohken Medical Co Ltd
• Inventors: MATSUI, Eiichi, MATSUI, Mitsuo, NAKAJIMA, Yasuo
• Granted Patent: US 10,390,742 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61B 2562/166 the sensor is mounted on a specially adapted printed circuit board
• CPC Class Codes: A61B 5/14552 Details of sensors specially adapted therefor
• CPC Class Codes: A61B 5/14553 specially adapted for cerebral tissue
• CPC Class Codes: A61B 5/6803 Head-worn items, e.g. helmets, masks, headphones or goggles
• CPC Class Codes: A61B 5/684 Indicating the position of the sensor on the body

Abstract

An object of the present invention is to provide a non-invasive monitor for measuring regional saturation of oxygen which is light and compact, and has excellent portability and excellent handleability to make an operator handle the monitor easily. A non-invasive monitor for measuring regional saturation of oxygen according to the present invention includes a sensor unit containing a printed circuit board on which a light emitting unit and a light receiving unit are mounted; a main body unit containing a computation processing unit, a display unit, and a power source unit; a sensor holder (30) for holding the sensor unit while the light emitting unit and the light receiving unit are disposed in an aperture portion; a sensor pressing board; a connecting unit for electrically connecting the sensor unit and the main body unit; and a headband. The light emitting unit and the light receiving unit are disposed such that a light emitting surface and a light receiving surface face the forehead-side, and a part or the whole of the forehead-side surface of the sensor unit is on the same surface as the forehead-side surface of the sensor holder or protrudes from the forehead-side surface of the sensor holder toward the forehead-side.

Claims

1-10. -10. (canceled)

11. A non-invasive monitor for measuring regional saturation of oxygen for measuring an oxygen saturation of a brain blood stream continuously in a non-invasive manner by mounting the monitor on a person'"'"'s head, comprising at least:

a sensor unit including a printed circuit board on which a light emitting unit for irradiating a surface of the forehead of the head with light of 650 to 1000 nm and a light receiving unit for receiving light which has been emitted by the light emitting unit and has propagated inside the head are mounted;

a main body unit disposed in front of the forehead when being mounted on the head, including a computation processing unit for calculating a mixed oxygen saturation of the brain blood based on a detection signal detected by the sensor unit, a display unit for displaying a computation processing result by the computation processing unit, and a power source unit for supplying power to the sensor unit, the computation processing unit, and the display unit;

a sensor holder for holding the sensor unit while the light emitting unit and the light receiving unit are disposed in an aperture portion, having a board shape abutting on the forehead and including the aperture portion penetrating in a board thickness direction thereof;

a sensor pressing board for holding the sensor unit toward the sensor holder, disposed between the sensor unit and the main body unit;

a connecting unit for electrically connecting the sensor unit and the main body unit; and

a headband for mounting the main body unit on the head detachably, wherein

the light emitting unit and the light receiving unit are disposed such that a light emitting surface of the light emitting unit and a light receiving surface of the light receiving unit face the forehead-side, and a part or the whole of the forehead-side surface of the sensor unit is on the same surface as the forehead-side surface of the sensor holder or protrudes from the forehead-side surface of the sensor holder toward the forehead-side.

12. The non-invasive monitor for measuring regional saturation of oxygen according to claim 11, further comprising a cushion interposed between the main body unit and the sensor pressing board.

13. The non-invasive monitor for measuring regional saturation of oxygen according to claim 11, wherein

the sensor unit includes a right light emitting unit and a left light emitting unit as the light emitting unit and includes a right light receiving unit and a left light receiving unit as the light receiving unit, and the left light receiving unit, the left light emitting unit, the right light emitting unit, and the right light receiving unit are disposed in this order in a lateral direction of the forehead,

the left light emitting unit and the right light emitting unit are disposed in linear symmetry with a virtual straight line between the left light emitting unit and the right light emitting unit as a symmetric axis, and

the left light receiving unit and the right light emitting unit are disposed in linear symmetry with the virtual straight line as a symmetric axis.

14. The non-invasive monitor for measuring regional saturation of oxygen according to claim 13, wherein the main body unit has a center mark, and the position of the center mark in a lateral direction of the forehead is on the virtual straight line.

15. The non-invasive monitor for measuring regional saturation of oxygen according to claim 11, wherein

the headband includes an inner headband connected to the main body unit, an outer headband connected to the outside of the inner headband, and a connecting portion connecting the outer headband to the inner headband so as to be able to be tightened or loosened,

the inner headband includes a slide groove portion,

the connecting portion includes a shaft portion engaging with the slide groove portion, and

the headband can lift the outer headband around the shaft portion and can adjust the position of the outer headband by sliding the shaft portion along the slide groove portion and matching the headband with the size of the head.

16. The non-invasive monitor for measuring regional saturation of oxygen according to claim 11, further comprising a tightening tool connected to the sensor pressing board.

17. The non-invasive monitor for measuring regional saturation of oxygen according to claim 11, wherein the connecting unit is a connector.

18. The non-invasive monitor for measuring regional saturation of oxygen according to claim 11, wherein

the sensor unit includes a covering portion for covering a part or the whole of the forehead-side surface of the sensor unit, and

the covering portion includes a silicone portion made of silicone and transmitting the light at least in a portion covering the light emitting surface-side of the light emitting unit and a portion covering the light receiving surface-side of the light receiving unit.

19. The non-invasive monitor for measuring regional saturation of oxygen according to claim 18, wherein

the covering portion includes a light transmission hindering portion at least between the silicone portion covering the light emitting unit and the silicone portion covering the light receiving unit, and the transmittance of the light in terms of a thickness of 1 mm in the light transmission hindering portion is one tenth or less with respect to the transmittance of the light in terms of a thickness of 1 mm in the silicone portion.

20. The non-invasive monitor for measuring regional saturation of oxygen according to claim 11, wherein the sensor unit includes a light receiving unit for a shallow portion and a light receiving unit for a deep portion as the light receiving unit.