TWI840191B - Infrared spectrum blood oxygen monitor with adjustable fit - Google Patents

Abstract

An infrared Spectrum blood oxygen monitor with adjustable fit, comprising a base, at least three movable supports, an infrared light emitter, and at least three infrared light detectors. Said movable supports are angularly spaced about the base. Each movable support includes a swinging part that can swing relative to the base, and an abutting part connected with the swinging part and used to lean against a human tissue. Said infrared light emitter is arranged on the base, and can emit an infrared light, and said infrared light detectors are respectively arranged on the abutting parts, and can detect said infrared light passing through the human tissue.

Description

Infrared Spectral Blood Oximeter with Adjustable Fit

The present invention relates to a blood oximeter, and more particularly to an infrared spectrum blood oximeter with adjustable fit.

An existing blood oxygen monitoring device, such as the blood oxygen wrist watch shown in the patent certificate of the Republic of China No. TW I608826, includes a photo sensor and a plurality of light-emitting elements arranged around the photo sensor and at an angle interval. When in use, the blood oxygen wrist watch is worn on the wrist of a user, and the light emitted by the corresponding light-emitting element is scattered by human tissue and measured by the light sensor, thereby sensing the change of blood oxygen. When the posture of the person changes and causes the wrist artery to shift, the light-emitting element at the corresponding position is driven to emit light according to the position of the wrist artery, thereby increasing the accuracy.

However, a wristwatch worn on the wrist will move with the user's movements, so it is very easy for the position to be measured to be completely separated from the light sensor and the light-emitting elements, resulting in poor measurement results.

Therefore, the object of the present invention is to provide an infrared spectral blood oximeter with adjustable fit that overcomes the shortcomings of the prior art.

Therefore, the infrared spectrum blood oximeter with adjustable fit of the present invention is used to measure the blood oxygen content of a human body tissue. The infrared spectrum blood oximeter with adjustable fit includes a base, at least three movable brackets, an infrared light emitter, and at least three infrared light detectors.

The movable supports are arranged at angle intervals around the base, and each movable support includes a swinging member that can swing relative to the base, and a contact member connected to the swinging member and used to contact the human body tissue. The infrared light emitter is arranged on the base and can emit infrared light. The infrared light detectors are respectively arranged on the contact members and can measure the infrared light passing through the human body tissue.

The effect of the present invention is that by setting the base, the movable supports, the infrared light emitter and the infrared light detectors, the degree of fit to the human body tissue can be adjusted to improve the accuracy of measurement.

Referring to FIGS. 1 , 2 , and 3 , an embodiment of the infrared spectral blood oximeter with adjustable fit of the present invention is used to measure the blood oxygen content of a human tissue 9 . The infrared spectral blood oximeter with adjustable fit includes a base 2 , three movable supports 3 , an infrared light emitter 4 , three infrared light detectors 5 , and a controller 6 .

The base 2 includes a surrounding portion 21 and three pivot portions 22 arranged at angular intervals around the surrounding portion 21. In this embodiment, the pivot portions 22 are arranged at equal angular intervals, but the present invention is not limited thereto, and the pivot portions 22 can also be arranged at unequal angular intervals.

The surrounding portion 21 defines a mounting groove 211 , and each pivot portion 22 has a ball groove 221 .

The movable supports 3 are arranged around the base 2 at angular intervals, and each movable support 3 includes a swinging member 31 pivoted on the respective pivoting portion 22 and capable of swinging relative to the base 2, and a resting member 32 connected to the swinging member 31 and used to rest against the human tissue 9.

Each swinging member 31 has a ball plug portion 311 rotatably disposed in the ball groove 221 of the respective pivot portion 22 , and a rod portion 312 connecting the ball plug portion 311 and the respective abutment member 32 and having a radial length smaller than the outer diameter of the ball plug portion 311 .

The infrared light emitter 4 is disposed in the mounting groove 211 of the base 2 and can emit infrared light. In this embodiment, the infrared light is a near-infrared light.

The infrared light detectors 5 are respectively disposed on the abutment members 32 and can detect the infrared light passing through the human body tissue 9.

In this embodiment, the distance between the infrared light emitter 4 and each infrared light detector 5 is equal to 3 cm. The wavelength range of the light emitted by the infrared light emitter 4 is between 730nm and 850nm, and the measurable wavelength of the infrared light detectors 5 is between 700nm and 900nm, but it is not limited thereto.

The controller 6 is electrically connected to the infrared light emitter 4 and the infrared light detectors 5, and can be used to control the on/off of the infrared light emitter 4 and receive infrared light data measured by the infrared light detectors 5. In this embodiment, the controller 6 is a microprocessor.

When the blood oxygen content of the human tissue 9 is to be measured, the infrared light detector 5 is first aligned with the position to be measured of the human tissue 9, and then the movable supports 3 are adjusted to swing relative to the base 2 and abut against the outer side of the position to be measured of the human tissue 9, thereby completing stable support, and then the controller 6 controls the infrared light emitter 4 to emit the infrared light, so that the infrared light is scattered through the human tissue 9 and the blood.

The light attenuated by scattering is measured by the nearby infrared detectors 5 to obtain the oxygenated hemoglobin concentration and the oxygen-deficient hemoglobin concentration. The controller 6 normalizes the oxygenated hemoglobin concentration and the oxygen-deficient hemoglobin concentration measured by the infrared detectors 5 to calculate the oxygenated hemoglobin concentration variation and the oxygen-deficient hemoglobin concentration variation, which is the so-called infrared spectrum variation.

Since the ball plug portion 311 of each swinging member 31 can rotate in its respective ball groove 221, and this ball plug structure enables the movable supports 3 to be flexibly swung relative to the base 2, therefore, when the movable supports 3 contact the human tissue 9, they can form multiple points of simultaneous contact with the surface of the human tissue 9 (such as the curved surface of the knee), and the multiple points of simultaneous contact with the human tissue 9 can ensure the stability of the overall structure, so that the infrared spectrum blood oximeter can be stably attached to the human tissue 9, thereby making the data measured by the infrared detectors 5 more accurate.

In addition, in this embodiment, the number of the movable brackets 3 and the infrared light detectors 5 is three, but it is not limited thereto. The number may also be four or more, and this is not a limiting condition.

In summary, by providing the base 2, the movable supports 3, the infrared light emitter 4 and the infrared light detectors 5, the degree of fit to the human body tissue 9 can be adjusted to improve the accuracy of measurement, thereby achieving the purpose of the present invention.

However, the above is only an embodiment of the present invention and should not be used to limit the scope of implementation of the present invention. All simple equivalent changes and modifications made according to the scope of the patent application of the present invention and the content of the patent specification are still within the scope of the present patent.

2: Base 21: Surrounding part 211: Mounting slot 22: Joint part 221: Ball slot 3: Movable bracket 31: Swinging part 311: Ball plug part 312: Rod part 32: Abutment part 4: Infrared light emitter 5: Infrared light detector 6: Controller 9: Human tissue

Other features and functions of the present invention will be clearly presented in the embodiments with reference to the drawings, wherein: FIG. 1 is a three-dimensional diagram of an embodiment of the infrared spectral blood oximeter with adjustable fit of the present invention, illustrating the arrangement relationship of a base, three movable supports, an infrared light emitter and a plurality of infrared light detectors; FIG. 2 is a view similar to FIG. 1, illustrating the swinging of the movable supports relative to the base; and FIG. 3 is a schematic diagram of the use of the embodiment.

2: Base

21: Surrounding part

211: Mounting slot

22: Joint

221: Ball slot

3: Movable bracket

31: Swinging piece

311: Ball plug

312: Rod

32: Adhesive parts

4: Infrared light emitter

5: Infrared light detector

Claims (6)

An infrared spectral blood oximeter with adjustable fit is used to measure the blood oxygen content of a human body tissue. The infrared spectral blood oximeter with adjustable fit comprises: a base; at least three movable brackets arranged at angles around the base, each movable bracket comprising a swinging member that can swing relative to the base, and a supporting member connected to the swinging member and used to abut against the human body tissue; an infrared light emitter, arranged on the base and capable of emitting an infrared light; and at least three infrared light detectors, respectively arranged on the supporting members, capable of measuring the infrared light passing through the human body tissue. An infrared spectroscopy blood oximeter with adjustable fit as described in claim 1, wherein the base includes a surrounding portion, and at least three pivoting portions arranged at angles around the surrounding portion for pivoting the swinging members respectively. An infrared spectroscopy blood oximeter with adjustable fit as described in claim 2, wherein the surrounding portion defines a mounting slot for the infrared light emitter to be disposed therein. An infrared spectroscopic blood oximeter with adjustable fit as described in claim 2, wherein each swinging member has a ball plug portion rotatably disposed on its respective pivot portion, and a rod portion connecting the ball plug portion and the abutment member and having a radial length smaller than the outer diameter of the ball plug portion. An infrared spectroscopy blood oximeter with adjustable fit as described in claim 4, wherein each hinge portion has a ball groove for the respective ball plug portion to be set. The infrared spectral blood oximeter with adjustable fit as described in claim 1 also includes a controller electrically connected to the infrared light emitter and the infrared light detectors.

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