KR102827873B1 - Blood carbon dioxide concentration measuring device - Google Patents

Abstract

The present invention relates to a device for measuring carbon dioxide concentration in blood, and more specifically, to a device for measuring carbon dioxide concentration in blood that can non-invasively measure carbon dioxide concentration in blood.
The present invention discloses a blood carbon dioxide concentration measuring device that measures the concentration of carbon dioxide in the blood by contacting the skin, comprising: a housing part (100) forming an internal space (S) and having an opening (101) formed in a lower surface; a measuring sensor part (200) installed in the internal space (S) and sensing carbon dioxide diffused from the skin through the opening (101); and a heating part (300) provided at a lower portion of the housing part (100) and heating the skin in contact.

Description

{Blood carbon dioxide concentration measuring device}

The present invention relates to a device for measuring carbon dioxide concentration in blood, and more specifically, to a device for measuring carbon dioxide concentration in blood that can non-invasively measure carbon dioxide concentration in blood.

In order to evaluate the user's condition, it is necessary to monitor and judge the adequacy of the user's breathing in real time, and for this purpose, it is necessary to measure the user's blood carbon dioxide concentration.

In particular, in patients at risk for hyperventilation due to hyperventilation syndrome, asthma, and panic disorder, in addition to measuring partial pressure of carbon dioxide (pCO2) and partial pressure of oxygen (pO2), it is essential to evaluate the patient's metabolic acid-base balance and the adequacy of alveolar ventilation.

More specifically, if carbon dioxide in the arterial blood falls below the normal range due to excessive carbon dioxide excretion through hyperventilation, hyperventilation syndrome such as dyspnea, dizziness, numbness, and fainting may occur, and if excessive alkalinization occurs due to hyperventilation, convulsions and fainting may occur.

Accordingly, monitoring of blood carbon dioxide concentration and acid-base balance assessment is essential to determine whether the user is experiencing hyperventilation syndrome.

However, conventional methods of measuring blood carbon dioxide concentration involve measuring and then judging by collecting blood from the radial artery hidden in the wrist or ankle. This is an invasive method that causes pain to the patient and requires continuous monitoring, which can lead to complications such as perforation, bleeding, infection, and vascular damage due to repeated blood collection.

In addition, for devices that indirectly estimate pCO2 from the patient's exhaled breath, there is the inconvenience of the patient having to breathe through a catheter, and there is a problem of reduced accuracy depending on the indirect estimation method.
(Patent Document 1) KR 10-2513207 B1
(Patent Document 2) KR 10-1554579 B1

The purpose of the present invention is to provide a blood carbon dioxide concentration measuring device capable of accurately measuring the concentration of carbon dioxide in the blood non-invasively in order to solve the above problems.

The present invention has been created to achieve the above-described purpose of the present invention, and the present invention discloses a blood carbon dioxide concentration measuring device that measures the blood carbon dioxide concentration by coming into contact with the skin, comprising: a housing part (100) forming an internal space (S); a measuring sensor part (200) installed in the internal space (S) and sensing carbon dioxide diffused from the skin; and a heating part (300) provided at the lower portion of the housing part (100) and heating the skin coming into contact with it.

The housing part (100) may include a housing (110) having a through hole (113) formed on one side for connecting a cable (10) and having an open bottom, and a lower part (120) that is coupled to the open bottom of the housing (110) and through which a part of the measuring sensor part (200) is installed.

The above housing (110) may have a band fastening portion (112) formed on each side to which a band is connected so that it can be fastened to the user's wrist.

The above-mentioned measuring sensor unit (200) may include a substrate unit (210) installed in the internal space (S) and connected to a cable (10), and a first sensor unit (220) installed on the lower surface of the substrate unit (210) to sense the carbon dioxide.

The above first sensor unit (220) may be an infrared sensor for measuring the carbon dioxide concentration.

The above measurement sensor unit (200) may additionally include a second sensor unit (230) installed on the lower surface of the substrate unit (210) to measure the pH concentration of gas diffused from the skin.

The above heating unit (300) may include a heating plate (320) having an insertion groove (321) formed to be coupled to the lower surface of the housing unit (100) to form an installation space between the heating plate (320) and the housing unit (100), and a heating unit (310) arranged in the installation space formed by the heating plate (320) and the housing unit (100).

The above heating plate (320) can be formed of aluminum material.

The above heating plate (320) corresponds to the annular heating part (310) and may have an opening (321) formed in the center through which the first sensor part (220) and the second sensor part (230) pass.

It may additionally include a cover part (400) installed to close the opening (321) at the bottom of the heating part (300).

The above cover part (400) may include a cover plate (410) that covers the opening (321), a first penetration part (430) formed at a position corresponding to the first sensor part (220) among the cover plate (410) and through which the first sensor part (220) passes, and a second penetration part (440) formed at a position corresponding to the second sensor part (230) among the cover plate (410) and through which the second sensor part (230) passes.

The housing part (100) may additionally include a protruding alignment part (123) formed protrudingly on the bottom surface, and the cover part (400) may include an alignment part (420) formed in a shape corresponding to the protruding alignment part (123) and into which the protruding alignment part (123) is inserted.

The blood carbon dioxide concentration measuring device according to the present invention has the advantage of being able to easily measure blood carbon dioxide concentration without causing inconvenience to the user during the measurement process by using gas diffused from the user's skin to measure blood carbon dioxide.

In addition, the blood carbon dioxide concentration measuring device according to the present invention has the advantage of improving measurement precision and responsiveness by inducing active gas diffusion by expanding pores through heating while in close contact with the user's skin.

In addition, the blood carbon dioxide concentration measuring device according to the present invention has the advantage of being able to diagnose the user's respiratory condition, including hyperventilation, by measuring not only the carbon dioxide concentration but also the blood pH concentration to enable acid-base balance evaluation.

In addition, the blood carbon dioxide concentration measuring device according to the present invention has the advantage of being able to measure in a relatively simple manner, such as by wearing it on the user's wrist, and thus real-time monitoring is possible through continuous, periodic measurement.

Figure 1 is a perspective view showing a blood carbon dioxide concentration measuring device according to the present invention.
Figure 2 is a bottom perspective view showing the appearance of the blood carbon dioxide concentration measuring device according to Figure 1.
Figure 3 is an exploded perspective view from above showing the appearance of the blood carbon dioxide concentration measuring device according to Figure 1.
Figure 4 is an exploded perspective view from below showing the appearance of the blood carbon dioxide concentration measuring device according to Figure 1.
Figure 5 is a cross-sectional view showing the internal appearance of a blood carbon dioxide concentration measuring device according to Figure 1.
Figure 6 is a cross-sectional view showing the internal appearance of a blood carbon dioxide concentration measuring device according to Figure 1.

Hereinafter, a blood carbon dioxide concentration measuring device according to the present invention will be described with reference to the attached drawings.

The blood carbon dioxide concentration measuring device according to the present invention, as illustrated in FIGS. 1 to 6, is a blood carbon dioxide concentration measuring device that measures the blood carbon dioxide concentration by coming into contact with the skin, and includes: a housing part (100) forming an internal space (S); a measuring sensor part (200) installed in the internal space (S) and sensing carbon dioxide diffused from the skin; and a heating part (300) provided at the lower portion of the housing part (100) and heating the skin coming into contact with it.

In addition, the blood carbon dioxide concentration measuring device according to the present invention may additionally include a cover part (400) installed to close the opening part (321) at the bottom of the heating part (300).

Here, the user using the blood carbon dioxide concentration measuring device according to the present invention is a subject who needs to monitor and measure changes in blood carbon dioxide concentration, and more specifically, can be applied to a user who has hyperventilation syndrome, asthma, and panic disorder at risk of abnormal breathing process.

Furthermore, it is also obvious that it can be applied to general users without separate symptoms to measure the blood carbon dioxide concentration and determine the adequacy of alveolar ventilation as needed.

Meanwhile, the blood carbon dioxide concentration measuring device according to the present invention is configured to measure the carbon dioxide concentration through gas diffused from the skin by being in close contact with the user's skin, and can be applied to any location on the user's skin that can be in close contact with it.

For example, a blood carbon dioxide concentration measuring device according to the present invention can be worn and attached to a user's wrist through a band such as a strap, like a watch, thereby measuring carbon dioxide concentration from gas diffusing from arterial blood.

The above housing part (100) is configured to form an internal space (S) and can have various configurations.

For example, the housing part (100) may include a housing (110) having a through hole (113) formed on one side for connecting a cable (10) and having an open bottom, and a lower part (120) that is coupled to the open bottom of the housing (110) and through which a part of the measuring sensor part (200) is installed.

The above housing (110) has a through hole (113) formed on one side for connecting a cable (10) and is open at the bottom, and various configurations are possible.

At this time, the housing (110) can have an open bottom and a lower plate (120) coupled to the lower portion to form an internal space (S) together with the lower plate (120), and a substrate (210) described later can be installed inside.

In addition, the housing (110) may have a through hole (113) formed on the side to allow an external cable (10) to be connected and installed, and a fastening hole formed on the upper surface to allow a fastening member to be fastened to the lower part (120) to be installed through the through hole.

In addition, the housing (110) may be additionally provided with a bolt cover (111) that is fitted into the fastening hole and covers the fastening hole, and a band fastening portion (112) may be formed on each side to connect a band such as a strap so that it can be fastened to the user's wrist.

Meanwhile, the housing (110) can be formed in various shapes including circular, oval, and polygonal shapes on a flat surface.

The above lower part (120) is configured to be coupled to the open lower part of the housing (110) and have a part of the measuring sensor part (200) penetrated and installed therein, and various configurations are possible.

For example, the lower part (120) corresponds to the lower opening of the housing (110) and has a plurality of fastening holes formed along the edge so that a fastening member penetrating the housing (110) is fastened, thereby allowing it to be fastened to the housing (110).

In addition, the lower part (120) may have a groove formed in a shape corresponding to the opening (321) described later in the center, and at this time, a first installation part (121) through which a first sensor part (220) is installed by penetrating the groove, and a second installation part (122) through which a second sensor part (230) is installed by penetrating the groove may be provided.

The above first installation part (121) may be configured such that a first penetration hole (121a) is formed through which the first sensor part (220) is installed and a step is formed to support the first sensor part (220).

In addition, the second installation part (122) may be configured such that a second penetration hole (122a) is formed through which the second sensor part (230) is installed and a step is formed to support the second sensor part (230).

Meanwhile, as another example, it is also obvious that the lower part (120) may be formed in a ring shape corresponding to the opening (321) described later, without a separate groove, and an opening may be formed on the center side.

In addition, the lower part (120) may additionally include a protruding alignment part (123) formed protrudingly on the lower surface, and at this time, the protruding alignment part (123) may be inserted into an alignment groove (420) of the cover part (400) by passing through an opening (321) described later, thereby inducing the housing part (100) and the cover part (400) to be arranged in the correct position.

At this time, the protruding alignment part (123) can be formed in various shapes to enable alignment and fastening with the cover part (400), and as an example, it can be provided to have a '+' shape as shown in FIG. 4.

In addition, the lower part (120) may have a fastening hole formed at the edge to penetrate and join the housing (110) as described above, and further, a fastening hole may be additionally formed to penetrate or join a fastening member that is fastened to the heating plate (320) by penetrating the heating part (300) described below, more specifically, the heating part (310).

The above measurement sensor unit (200) is installed in the internal space (S) and is configured to sense carbon dioxide diffused from the skin, and various configurations are possible.

That is, the above-described measuring sensor unit (200) may be configured to sense gas diffused from the skin by having the first sensor unit (220) and the second sensor unit (230) described below installed in an internal space (S) and positioned so as to penetrate the lower part (120) and the cover part (400) at a position adjacent to the skin, and may be configured to transmit and receive signals with the outside by being connected to a cable (10) installed and fastened to the housing (110).

To this end, the measuring sensor unit (200) may include a substrate unit (210) installed in the internal space (S) and connected to a cable (10), and a first sensor unit (220) installed on the lower surface of the substrate unit (210) to sense the carbon dioxide.

In addition, the above measurement sensor unit (200) may additionally include a second sensor unit (230) installed on the lower surface of the substrate unit (210) to measure the pH concentration of gas diffused from the skin.

The above substrate portion (210) is installed in an internal space (S) and is configured to be connected to a cable (10), and various configurations are possible.

That is, the substrate portion (210) may be configured to have a first sensor portion (220) and a second sensor portion (230) connected, and to transmit measured sensing values to the outside and control each sensor by connecting an external cable (10) to the first sensor portion (220) and the second sensor portion (230).

At this time, the substrate portion (210) may have a fastening groove (201) formed on the edge so that a fastening member that penetrates the housing (110) and is fastened to the lower portion (120) or is fastened between the lower portion (120) and the heating portion (300) can be installed vertically without interference.

The above first sensor part (220) is configured to sense carbon dioxide and is installed on the lower surface of the substrate part (210), and various configurations are possible.

In particular, the first sensor unit (220) is configured to measure the blood concentration of carbon dioxide by sensing carbon dioxide in a gas diffused from pores of the skin, and an optical (NDIR) sensor may be applied, and for example, an infrared sensor may be applied.

Meanwhile, the first sensor part (220) is installed so as to protrude downward from the substrate part (210), and passes through the first penetration hole (121a) of the first installation part (121) provided in the lower plate part (120) and sequentially passes through the opening (321) of the heating part (300) and the first penetration part (430) of the cover part (400), so that it can be placed at a position closest to the skin.

The above second sensor part (230) is installed on the lower surface of the substrate part (210) and is configured to measure the pH concentration of gas diffused from the skin, and various configurations are possible.

In particular, the second sensor unit (230) is configured to sense hydrogen in a gas diffused from pores of the skin and measure the blood pH concentration, thereby enabling diagnosis of blood acid-base adequacy.

To this end, the second sensor part (230) is installed so as to protrude downward from the substrate part (210), and is installed so as to pass through the second penetration hole (122a) of the second installation part (122) provided in the lower part (120) and sequentially penetrate the opening (321) of the heating part (300) and the second penetration part (440) of the cover part (400), so as to be positioned at a position closest to the skin.

The above heating part (300) is provided at the lower part of the housing part (100) and is configured to heat the skin that comes into contact with it, and various configurations are possible.

That is, the heating unit (300) is positioned in contact with or adjacent to the skin and heats the skin, thereby expanding pores and inducing blood gas to diffuse toward the internal space (S).

To this end, the heating unit (300) may include a heating plate (320) having an insertion groove (321) that is coupled to the lower surface of the housing unit (100) to form an installation space between the heating plate (320) and the housing unit (100), and a heating unit (310) that is arranged in the installation space formed by the heating plate (320) and the housing unit (100).

The above heating part (310) is configured to be placed in an installation space formed by a heating plate (320) and a housing part (100), and various configurations are possible.

That is, the heating unit (310) may be of any form disclosed in the past that is capable of generating heat, such as resistive heating through power applied from the outside or heat generation through the application of a piezoelectric element.

At this time, the heating part (310) is configured in a ring shape with an opening (311) formed at the center side and can be installed by being inserted into the installation groove (322) of the heating plate (320) in which the opening (321) is formed.

That is, the heating part (310) is installed in an installation space formed between the installation groove (322) of the heating plate (320) and the lower part (120), generates heat, and can transfer heat to the skin through the heating plate (320), which is a metal material of aluminum.

The above heating plate (320) is configured to be coupled to the lower surface of the housing part (100) and has an insertion groove (322) to form an installation space between it and the housing part (100), and various configurations are possible.

At this time, the heating plate (320) may have an opening (321) formed on the center side for the first sensor unit (220) and second sensor unit (230) to pass through, and an insertion groove (322) may be formed along the edge corresponding to the annular heating unit (310).

In addition, the heating plate (320) can be fastened to the lower part (120) through a fastening member, and for this purpose, a fastening hole can be formed at a position corresponding to a fastening hole provided in the lower part (120).

Meanwhile, the heating plate (320), as described above, can be made of a material with excellent heat conductivity to transfer heat generated from the heating unit (310) to the skin, and can be formed of, for example, a metal material such as aluminum.

The above cover part (400) is configured to close the opening (321) at the bottom of the heating part (300), and various configurations are possible.

That is, the cover part (400) may be configured to expose the first sensor part (220) and the second sensor part (230) to the skin side by penetrating through them, while the other openings (321) are installed to prevent external exposure.

At this time, the cover part (400) may be provided as a consumable product, made of a resin-based material, and may be configured to be fixed by being forcibly fitted into the opening (321).

For example, the cover part (400) may include a cover plate (410) that covers the opening (321), a first penetration part (430) that is formed at a position corresponding to the first sensor part (220) among the cover plate (410) and through which the first sensor part (220) passes, and a second penetration part (440) that is formed at a position corresponding to the second sensor part (230) among the cover plate (410) and through which the second sensor part (230) passes.

In addition, the cover part (400) may include an alignment part (420) formed in a shape corresponding to the protruding alignment part (123) and into which the protruding alignment part (123) is inserted.

The above cover plate (410) is configured to cover the opening (321), is formed in a shape corresponding to the opening (321), has a step formed at the edge, and can be fitted and supported within the opening (321), i.e., the inner surface of the heating plate (320).

In addition, the cover plate (410) may be formed with a first penetration portion (430) formed at a position corresponding to the first sensor portion (220) and through which the first sensor portion (220) passes, and a second penetration portion (440) formed at a position corresponding to the second sensor portion (230) of the cover plate (410) and through which the second sensor portion (230) passes.

The above alignment part (420) may be formed in a shape corresponding to the above-described protruding alignment part (123) in the cover plate (410) and may be configured such that the protruding alignment part (123) is inserted.

At this time, the alignment part (420) may be formed by penetrating so that the protruding alignment part (123) is exposed to the outside, or may be formed in a groove shape so that the protruding alignment part (123) is inserted and installed.

The above is only a description of some of the preferred embodiments that can be implemented by the present invention, and therefore, as is well known, the scope of the present invention should not be construed as being limited to the above embodiments, and the technical ideas of the present invention described above and the technical ideas underlying them are all included in the scope of the present invention.

100: Housing part 200: Measuring sensor part
300: Heating part 400: Cover part

Claims (12)

A blood carbon dioxide concentration measuring device that measures the blood carbon dioxide concentration by contacting the skin.
A housing portion (100) forming an internal space (S);
A measuring sensor unit (200) installed in the above internal space (S) and sensing carbon dioxide diffused from the skin;
It is provided at the lower part of the housing part (100) and includes a heating part (300) that heats the skin that comes into contact with it.
The above housing part (100) is
It includes a housing (110) with an open bottom and a through hole (113) formed on one side for connecting a cable (10), and a lower part (120) that is coupled to the open bottom of the housing (110) and through which a part of the measuring sensor part (200) is installed.
The above heating part (300) is
It includes a heating plate (320) having an insertion groove (322) formed to be coupled to the lower surface of the housing part (100) to form an installation space between the heating plate (320) and the housing part (100), and a heating part (310) arranged in the installation space formed by the heating plate (320) and the housing part (100).
The above heating plate (320) is
An opening (321) is formed in the center corresponding to the annular heating part (310) and through which the measuring sensor part (200) passes.
A blood carbon dioxide concentration measuring device characterized in that it further includes a cover part (400) that closes the opening part (321) at the lower part of the heating part (300) and penetrates and exposes the measuring sensor part (200) so as to be adjacent to the skin. delete In claim 1,
The above housing (110) is
A blood carbon dioxide concentration measuring device characterized in that a band fastening portion (112) is formed on each side to connect the band so that it can be fastened to the user's wrist. In claim 1,
The above measuring sensor unit (200) is
A blood carbon dioxide concentration measuring device characterized by including a substrate portion (210) installed in the internal space (S) and connected to a cable (10), and a first sensor portion (220) installed on the lower surface of the substrate portion (210) and sensing the carbon dioxide. In claim 4,
The above first sensor part (220) is,
A blood carbon dioxide concentration measuring device characterized by an infrared sensor for measuring the carbon dioxide concentration. In claim 4,
The above measuring sensor unit (200) is
A blood carbon dioxide concentration measuring device characterized by further including a second sensor unit (230) installed on the lower surface of the substrate unit (210) to measure the pH concentration of gas diffused from the skin. delete In claim 1,
The above heating plate (320) is
A blood carbon dioxide concentration measuring device characterized by being formed of aluminum material. delete delete In claim 6,
The above cover part (400) is
A blood carbon dioxide concentration measuring device characterized by including a cover plate (410) covering the opening (321), a first penetration portion (430) formed at a position corresponding to the first sensor portion (220) in the cover plate (410) and through which the first sensor portion (220) passes, and a second penetration portion (440) formed at a position corresponding to the second sensor portion (230) in the cover plate (410) and through which the second sensor portion (230) passes. In claim 1,
The above housing part (100) is
In addition, it includes a protruding alignment part (123) formed protruding on the bottom surface,
The above cover part (400) is
A blood carbon dioxide concentration measuring device characterized by including an alignment part (420) formed in a shape corresponding to the above-mentioned protruding alignment part (123) and into which the above-mentioned protruding alignment part (123) is inserted.

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