WO2016003114A1

WO2016003114A1 - Oxygen saturation-measuring probe for use with nasal cannula

Info

Publication number: WO2016003114A1
Application number: PCT/KR2015/006510
Authority: WO
Inventors: 허재만; 김동완; 노규정; 최병문
Original assignee: 케이티메드 주식회사; 울산대학교 산학협력단
Priority date: 2014-07-04
Filing date: 2015-06-25
Publication date: 2016-01-07

Abstract

Provided is an oxygen saturation-measuring probe for use with a nasal cannula which is inserted inside the nose of a patient for supplying oxygen to the patient. The oxygen saturation-measuring probe of the present invention is provided with a placing means for placing same on the nasal cannula. Further, two pier parts inserted inside the nasal cavity are provided, wherein the two pier parts are integrally connected by means of a bridge part which connects the two pier parts. The pier parts are inserted inside the nasal cavity along with the insertion tube of the nasal cannula. Among the two pier parts, on one side, a light-emitting means, and on the other side, a light-receiving means is installed. According to the present invention, the oxygen saturation-measuring probe is placed on the nasal cannula, thereby not only allowing a subject to freely use both of his/her hands during the measuring of oxygen saturation, but also drastically decreasing the possibility of error occurring due to the subject moving his/her hands.

Description

Probe for oxygen saturation for use with nasal cannula

The present invention relates to a probe for measuring oxygen saturation, and more particularly to a probe for measuring oxygen saturation for use with a nasal cannula inserted into a patient's nose to supply oxygen to a patient.

In many cases, nasal cannula is used to provide oxygen to a surgical patient or a recovering patient. Examples of the use of the nasal cannula and the shape of the nasal cannula are disclosed in Korean Patent Application Laid-Open No. 10-2012-0052259, US Pat. No. 7,735,490, and the like.

1 shows a patient wearing a nasal cannula 10. The common nasal cannula 10 has a connector 12 for connection with an oxygen supply device, and

injection tubes

11a and 11b inserted into the nasal cavity of the patient to inject oxygen supplied through the connector 12 into the patient. Equipped. By using the nasal cannula 10, oxygen can be more easily supplied to the patient under surgery or the patient recovering.

On the other hand, in order to continuously monitor the condition of the patient in operation or recovering, it is necessary to measure the oxygen saturation (Oxigen saturation, SPO2, blood oxygen saturation concentration), the pulse and the like.

In general, a method of measuring oxygen saturation in a non-invasive method is to insert a measuring device in the form of a clothespin on the thumb or index finger of the patient. The oxygen saturation measuring device of this type has a light emitting part and a light receiving part, and emits infrared and red light at the same time through the LED light emitting part. The emitted light passes through the blood vessels of the finger and is detected through the light-receiving unit. The hemoglobin combined with oxygen absorbs infrared light, while the reduced hemoglobin absorbs red light. Calculate

However, if the oxygen saturation is measured in the finger, not only the accuracy is lowered, but also the measurement accuracy is significantly reduced if the patient unconsciously moves the finger. In addition, it is difficult to freely use the hand of the patient while continuously monitoring the oxygen saturation level, since the measurement device must be constantly held on the finger.

SUMMARY OF THE INVENTION The present invention has been made in view of this point, and it is to provide an oxygen saturation measurement probe capable of continuously and accurately measuring oxygen saturation and pulse of a patient in operation or a patient recovering oxygen through a nasal cannula. The purpose. It is another object of the present invention to provide an oxygen saturation measurement probe with little interference by ambient light and which allows the subject to use both hands freely even during oxygen saturation measurement.

The oxygen saturation probe of the present invention is used by mounting on a nasal cannula. To this end, the oxygen saturation probe of the present invention includes a mounting means for mounting on the nasal cannula. In addition, it is preferable that two piers are inserted into the nasal cavity, and the two piers are integrally connected by a bridge connecting the two piers. The pier is to be inserted into the nasal cavity with the infusion tube of the nasal cannula.

Mounting means in the present invention is configured in the form of a hollow portion formed in the longitudinal direction inside the pier. The diameter of the pier is preferably sized such that the pier does not move in the nasal cavity. In addition, the diameter of the hollow portion is preferably configured to have a size such that the injection portion of the nasal cannula in the hollow portion does not move.

One of the two piers is provided with light emitting means and the other with light receiving means. Accordingly, the light emitted from the light emitting means passes through the skin such as the septum or the palate and reaches the light receiving means, so that the blood oxygen saturation concentration in the blood vessel on the light path can be measured.

On the other hand, it is preferable that the light emitting means and the light receiving means are respectively provided at the end of the legs of the pier in order to be more free from the interference of the ambient light. The light emitting means and the light receiving means may be formed to face each other, or may be installed to face the direction between 0 degrees and 90 degrees when the direction facing each other is referred to as 0 degrees and the direction looking downwards perpendicular to each other as 90 degrees.

According to the present invention, since the oxygen saturation level of the patient is measured from blood vessels in the nasal cavity, relatively low errors occur in comparison with the fingertips in a low blood flow situation. In addition, since the blood vessels in the nasal cavity are immediately reflected in the patient's condition compared to the blood vessels at the fingertips, the change in the patient's condition can be detected more quickly. In addition, since there is no fear of ambient light entering the nasal cavity, interference by ambient light can be greatly reduced. In addition, since it is mounted on the nasal cannula, the subject can freely use both hands even during oxygen saturation measurement, and the possibility of an error caused by the subject's hand movement is greatly reduced. In addition, since it has a form that is mounted on the nasal cannula, the structure is simple, it is easy to install and separate the oxygen saturation measuring device to the patient for measurement.

1 is a view showing a patient wearing a nasal cannula.

2 is a view showing the shape of the oxygen saturation probe according to an embodiment of the present invention.

FIG. 3 is a view showing a state in which a probe for measuring oxygen saturation of FIG. 2 is mounted on a nasal cannula.

4 is a conceptual view illustrating a direction in which light emitting means and light receiving means are installed in an oxygen saturation measuring probe.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 and 3 are views showing the oxygen saturation measurement probe according to an embodiment of the present invention, Figure 2 shows the form of the oxygen saturation measurement probe according to an embodiment of the present invention, Figure 3 The oxygen saturation measurement probe of Figure 2 shows a state mounted on the nasal cannula.

In the present embodiment, the left pier 220a and the right pier 220b have a pipe shape in which

hollows

250a and 250b are formed in the longitudinal direction. The left pier 220a and the right pier 220b are integrally connected by the bridge 210. In FIG. 2, the left piers 220a and the right piers 220b have a cylindrical shape, and end portions thereof are treated as hemispheres so as to be inserted into the nose of a patient.

In this embodiment, the oxygen saturation measurement probe 100 is mounted on the nasal cannula by the

hollow portions

250a and 250b. That is, in this embodiment, the

hollow portions

250a and 250b serve as mounting means. The oxygen saturation measurement probe 100 is mounted on the nasal cannula 10 by inserting the

injection portions

11a and 11b of the nasal cannula 10 into the

hollow portions

250a and 250b. For this purpose, the cross-sectional shape of the

hollow portions

250a and 250b is preferably configured to be the same as the cross-sectional shape of the nasal cannula 10. In use, the

injection portions

11a and 11b of the nasal cannula 10 are inserted into the

hollow portions

250a and 250b and the

piers

220a and 220b together with the

injection portions

11a and 11b of the nasal cannula into the patient's nasal cavity. Insert it.

Although not shown in FIG. 2, light emitting means is disposed in one pier and light receiving means is disposed in the other pier. The light emitting means and the light receiving means are electrically connected to an oxygen saturation measuring device (not shown) through the wire 260. The wire 260 may be fixedly connected to the oxygen saturation measurement probe 100 or may be connected using a connector (not shown).

When the

piers

220a and 220b move within the nasal cavity of the patient during oxygen saturation measurement, the accuracy of the measurement may be reduced. Accordingly, the diameters of the

piers

220a and 220b preferably have a size such that the

piers

220a and 220b do not move in the nasal cavity.

In addition, in order to prevent the

injection portions

11a and 11b of the nasal cannula from falling into the

hollow portions

250a and 250b at the time of measuring oxygen saturation, the diameters of the

hollow portions

250a and 250b of the nasal cannula in the hollow portion are measured. It is preferable to configure the injection portion (11a, 11b) to have a size that does not move. In this case, the nasal cannula 10 is convenient because it does not need to provide a separate means for fixing the nose to the patient.

In the present invention, it is preferable that the light emitting means and the light receiving means are provided at the end portions of the legs of the piers in order to be more free from the interference of ambient light. The light emitting means and the light receiving means may be formed to face each other, and as shown in FIG. 4, when the direction facing each other is referred to as 0 degrees and the direction viewed downwards perpendicularly to each other is referred to as 90 degrees, the light emitting means and the light receiving means face each other between 0 degrees and 90 degrees. It may be installed.

When the light emitting means and the light receiving means are installed to face each other, the light from the light emitting means passes through the skin of the nasal septum to reach the light receiving means. In this case, the light path between the light emitting means and the light receiving means is short and the skin of the septum is thin, so that the intensity of the light passing therethrough may be too large to accurately measure the oxygen saturation. In this case, the angles of the light emitting means and the light receiving means may be arranged closer to 90 degrees rather than zero degrees. In this arrangement, since the light from the light emitting means passes through the palate and is reflected from the teeth or bones and passes through the palate again to the light receiving means, the light path between the light emitting means and the light receiving means is long, so that more accurate measurement is possible. .

As mentioned above, although this invention was demonstrated to the several example, this invention is not limited to a specific Example.

In addition, the terms "comprise", "comprise", "comprise" or "having" described above mean that the corresponding component may be included unless otherwise stated, and therefore, other It should be construed that it is possible to include other components rather than to exclude the components. All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art unless otherwise defined. Terms used generally, such as terms defined in a dictionary, should be interpreted to coincide with the contextual meaning of the related art, and shall not be interpreted in an ideal or excessively formal sense unless explicitly defined in the present invention.

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and changes without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

* Explanation of Codes *

10 nasal cannula,

200 oxygen saturation probe,

210 bridge section,

220a, 220b piers,

250a, 250b hollow part.

Claims

Mounting means for mounting on the nasal cannula;

Two piers that are inserted into the nasal cavity;

A bridge unit connecting the two piers;

Light emitting means installed on one of the two piers;

Light receiving means installed on the other side of the two piers

Probe for oxygen saturation measurement comprising a.
The method of claim 1,

The pier is in the form of a pipe formed with a hollow portion therein,

The mounting means is a hollow portion of the pier,

A probe for measuring oxygen saturation in which a portion inserted into the nasal cavity of the nasal cannula is inserted into the hollow part so that a probe for measuring oxygen saturation is placed on the nasal cannula.
The method of claim 2,

The diameter of the piers is oxygen saturation probe, characterized in that having a size that does not move the piers in the nasal cavity.
The method of claim 3,

The diameter of the hollow portion is an oxygen saturation probe, characterized in that the size of the nasal cannula does not move in the hollow portion.
The method according to any one of claims 1 to 4,

Probe for measuring the oxygen saturation is formed so that the light emitting means and the light receiving means face each other.
The method according to any one of claims 1 to 4,

Probe for measuring the oxygen saturation means that the light emitting means and the light receiving means is installed so as to face the direction between 0 degrees and 90 degrees when the direction facing each other is 0 degrees and the direction looking downward to each other vertically 90 degrees .
The method according to any one of claims 1 to 4,

And the light emitting means and the light receiving means are respectively installed at end portions of legs of the piers.