An oxygen mask capable of absorbing and detecting end-tidal carbon dioxide

Abstract

This invention discloses an oxygen mask capable of adsorbing and detecting end-tidal carbon dioxide, relating to the field of oxygen mask technology. It includes a mask body with a detection box and an adsorption box on its inner surface. The detection box contains a detection substance used to detect carbon dioxide concentration. The adsorption box contains an adsorbent substance capable of adsorbing carbon dioxide exhaled by a patient. The mask body has multiple air outlets and several oxygen channels. The air inlets of the oxygen channels are located on the outer surface of the mask body, and the air outlets are located on the inner surface. This invention effectively detects the concentration of carbon dioxide exhaled by a patient through the detection box, while the adsorption box effectively prevents the patient from re-inhaling carbon dioxide. The device has a simple overall structure, is easy to use, and has low manufacturing costs.

Description

Technical Field

[0001] The invention relates to the technical field of oxygen-absorbing masks, in particular to an oxygen-absorbing mask capable of absorbing and detecting end-tidal carbon dioxide. Background Art

[0002] Clinical studies have confirmed that PETCO2 monitoring is currently an important monitoring method with practical significance for judging the development of the disease. When monitoring the spontaneous breathing of awake patients, the PETCO2 sampled and measured through the nasal cannula is not affected by the presence of dead space gas in the nasopharynx. Under non-enclosed conditions, PETCO2 can also accurately evaluate PaCO2, achieving the purpose of non-invasive continuous monitoring of lung function ventilation and gas exchange.

[0003] Therefore, clinical guidelines recommend using PetCO2 monitoring as a routine monitoring method for non-intubated patients at risk of respiratory depression. It can be used for non-intubated patients, especially children, and can continuously monitor the PetCO2 of critically ill patients, which can reduce the number of times arterial blood is drawn and reduce the patient's pain.

[0004] At present, there are three methods for measuring end-tidal carbon dioxide: infrared method, mass spectrometer method and colorimetric method. The commonly used infrared method in clinic is divided into two types: sidestream type and mainstream type according to the gas sampling method. However, these instruments are expensive to use and are only used for testing patients in urgent need and critical condition. They are cumbersome to use, and postoperative patients are prone to re-inhalation of exhaled carbon dioxide when using oxygen masks for oxygen inhalation, which makes the carbon dioxide in the body remain high and easily causes carbon dioxide accumulation in the body.

[0005] Therefore, there is an urgent need in the art for an oxygen mask that can absorb and detect end-tidal carbon dioxide to solve the above problems. Summary of the invention

[0006] The purpose of the present invention is to provide an oxygen inhalation mask that can absorb and detect end-tidal carbon dioxide to solve the problems existing in the above-mentioned prior art. It can be used to monitor the concentration of carbon dioxide exhaled by the patient while the patient is inhaling oxygen, and can also absorb excess carbon dioxide exhaled. The manufacturing and use costs are low and the operation method is simple.

[0007] To achieve the above object, the present invention provides the following solutions:

[0008] The present invention discloses an oxygen inhalation mask capable of adsorbing and detecting end-tidal carbon dioxide, comprising a mask body, wherein the inner surface of the mask body is provided with a detection box and an adsorption box, wherein the detection box contains a detection substance, wherein the detection substance is used to detect the concentration of carbon dioxide, wherein the adsorption box contains an adsorption substance, wherein the adsorption substance can adsorb carbon dioxide exhaled by a patient, wherein the mask body is provided with a plurality of air outlet holes, wherein the mask body is provided with a plurality of oxygen channels, wherein the air inlet of the oxygen channel is located on the outer surface of the mask body, and the air outlet of the oxygen channel is located on the inner surface of the mask body.

[0009] Preferably, the detection box and the adsorption box are fixed against each other;

[0010] There are two oxygen channels, and the gas outlets of the two oxygen channels are respectively located on both sides of the detection box and the adsorption box.

[0011] Preferably, the test substance is litmus particles or litmus paper, a liquid inlet is provided on the side wall of the test box, a micro-pressure membrane is provided at the liquid inlet, a liquid storage capsule is provided on the outer side of the micro-pressure membrane, and distilled water is contained in the liquid storage capsule.

[0012] Preferably, the liquid storage capsule is made of rubber, and the micro-pressure membrane is made of PVC.

[0013] Preferably, the adsorbent is nanocarbon.

[0014] Preferably, the detection box and the adsorption box are both rectangular box structures, and mesh surfaces are provided at the box openings of the detection box and the adsorption box, and a sealing sticker is provided on the outer surface of the mesh surface.

[0015] Preferably, absorbent cotton is placed in the detection box.

[0016] Preferably, elastic straps are connected to both sides of the mask body.

[0017] Compared with the prior art, the present invention has achieved the following technical effects:

[0018] As a disposable oxygen mask capable of absorbing and detecting end-tidal carbon dioxide, the present invention can prevent patients from repeatedly inhaling carbon dioxide previously exhaled by the patient while inhaling oxygen after general anesthesia. The high-concentration exhaled carbon dioxide can be absorbed in the adsorbent, thereby reducing the accumulation of excess carbon dioxide in the body after general anesthesia.

[0019] Furthermore, the present invention is also equipped with a detection box capable of detecting the concentration of end-tidal carbon dioxide, which can indicate the concentration of end-tidal carbon dioxide by the reaction color. The invention is simple, fast, effective and economical to use.

[0020] Furthermore, the edge of the mask body of the present invention is made of soft plastic or airbags, and oxygen channels are respectively provided on both sides of the mask body, which can improve the comfort of the face and nasal cavity while inhaling oxygen. In order to reduce the influence of the oxygen flow on the gas in the mask body, the oxygen flow can be dispersed to reduce the impact of the oxygen input into the mask body, alleviate the dryness of the airway caused by oxygen inhalation, and relieve the re-inhalation of carbon dioxide caused by the re-blowing of carbon dioxide into the respiratory tract when the oxygen flow is large. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a front schematic diagram of an oxygen inhalation mask capable of absorbing and detecting end-tidal carbon dioxide according to an embodiment of the present invention;

[0023] Figure 2 It is a side schematic diagram of an oxygen inhalation mask capable of absorbing and detecting end-tidal carbon dioxide according to an embodiment of the present invention;

[0024] Figure 3 It is a schematic diagram of the structure of a detection box and an adsorption box in an oxygen inhalation mask capable of adsorbing and detecting end-tidal carbon dioxide according to an embodiment of the present invention;

[0025] In the figure: 1-mask body; 2-detection box; 3-adsorption box; 4-oxygen channel; 5-pipe joint; 6-elastic strap; 7-air outlet hole; 8-oxygen supply tube; 9-liquid storage bag. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] The purpose of the present invention is to provide an oxygen inhalation mask that can absorb and detect end-tidal carbon dioxide to solve the problems existing in the above-mentioned prior art. It can be used to monitor the concentration of carbon dioxide exhaled by the patient while the patient is inhaling oxygen, and can also absorb excess carbon dioxide exhaled. The manufacturing and use costs are low and the operation method is simple.

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] like Figure 1-Figure 3 As shown, the present invention provides an oxygen inhalation mask capable of adsorbing and detecting end-tidal carbon dioxide, comprising a mask body 1, the mask body 1 being made of a transparent medical plastic material, the inner surface of the mask body 1 (the inner surface being the side in contact with the human face) being provided with a detection box 2 and an adsorption box 3, the detection box 2 and the adsorption box 3 being fixed to the mask body 1 by bonding, or being integrally formed with the mask body 1. Among them, the detection box 2 contains a detection substance, which is used to detect the concentration of carbon dioxide, and the adsorption box 3 contains an adsorption substance, which can adsorb carbon dioxide. The mask body 1 is provided with a plurality of air outlet holes 7, the specific number and distribution positions of the air outlet holes 7 can be appropriately adjusted according to the area and shape of the mask body 1. The mask body 1 is provided with a plurality of oxygen channels 4, the air inlets of the oxygen channels 4 are located on the outer surface of the mask body 1, the outer surface of the mask body 1 is provided with a connecting port, the air inlets of the oxygen channels 4 are gathered at the connecting port, the air inlets of the oxygen channels 4 are connected to the external oxygen supply pipe 8 at the connecting port through a pipe joint 5, the air outlet of the oxygen channel 4 is located on the inner surface of the mask body 1, and external oxygen can be transported to the mask body 1 through the oxygen channels 4.

[0030] When it is necessary to detect the end-tidal carbon dioxide concentration of the patient, it is only necessary to wear the mask body 1 on the patient's face, connect the air inlet of the oxygen channel 4 to the external oxygen supply tube 8, and the detection box 2 and the adsorption box 3 are located between the patient's nose and lips, so as not to cause any discomfort to the human face. The carbon dioxide exhaled by the patient will enter the detection box 2, and the carbon dioxide concentration can be detected by the detection box 2. At the same time, the carbon dioxide exhaled by the patient will be adsorbed by the adsorption material in the adsorption box 3 to prevent the excess carbon dioxide from being re-inhaled by the patient.

[0031] In this embodiment, the detection box 2 and the adsorption box 3 are fixed against each other, which can be understood as the detection box 2 and the adsorption box 3 are fixed side by side.

[0032] There are two oxygen channels 4, and the air outlets of the two oxygen channels 4 are respectively located on the two sides of the detection box 2 and the adsorption box 3. The purpose of this arrangement is to improve the comfort of the face and nasal cavity while inhaling oxygen. In order to reduce the impact of the oxygen flow on the gas in the mask body 1, the oxygen flow can be dispersed to reduce the impact of the oxygen input into the mask body 1, alleviate the dry airway discomfort caused by oxygen inhalation, and relieve the re-inhalation of carbon dioxide caused by the re-blowing of end-expiratory carbon dioxide into the respiratory tract when the oxygen flow is large.

[0033] In this embodiment, the detection substance is litmus particles or litmus paper, and litmus solution is used to monitor the concentration of carbon dioxide. When the detection reagent is actually used, it is necessary to add water to moisten the detection substance to keep it in a moist state so that it can react chemically with the carbon dioxide in the mask body 1. For this purpose, a liquid inlet is provided on the side wall of the detection box 2, and a micro-pressure membrane is provided at the liquid inlet. A liquid storage capsule 9 is provided on the outside of the micro-pressure membrane, and distilled water is contained in the liquid storage capsule 9.

[0034] When the detection box 2 is needed, the liquid storage capsule 9 needs to be pressed hard by hand so that the distilled water inside the liquid storage capsule 9 breaks through the micro-pressure membrane and enters the detection box 2, so that the detection substance is in a moist state, thereby facilitating the detection of carbon dioxide. When the moist detection substance changes color (i.e., from purple to red), it means that carbon dioxide is detected, and when the color changes from light to dark, the concentration content can be obtained by comparing the test paper color card; when the concentration of carbon dioxide remains unchanged or decreases, the color of the detection substance will not change. In this way, the concentration of carbon dioxide exhaled by the patient can be roughly detected.

[0035] In this embodiment, the liquid storage capsule 9 is made of rubber, which has good sealing performance and is not easy to leak. The micro-pressure membrane is made of PVC material, which is easy to break when subjected to the pressure of distilled water, thereby achieving the filling of distilled water.

[0036] In this embodiment, the adsorbent is nanocarbon, which utilizes the special active structure and porous network on the surface of the carbon structure to effectively adsorb CO2 molecules, thereby achieving CO2 purification.

[0037] In this embodiment, both the detection box 2 and the adsorption box 3 are rectangular box structures, and have a box opening on one side. The box openings of the detection box 2 and the adsorption box 3 are both provided with a mesh surface (i.e., a filter screen), which is used to prevent the detection substance and the adsorption substance from falling out. The outer surface of the mesh surface is provided with a common sealing sticker, and during transportation, the detection box 2 and the adsorption box 3 can be sealed by the sealing sticker to prevent external impurities from entering. When it is actually used, the sealing sticker can be torn off for testing.

[0038] In this embodiment, absorbent cotton is placed in the detection box 2. Its function is to absorb the moisture entering the detection box 2 during transportation or storage, so that the detection box 2 is in a dry state, and the detection substance is prevented from becoming ineffective before use.

[0039] In this embodiment, elastic straps 6 are connected to both sides of the mask body 1 to facilitate fixing the mask body 1 on the patient's face.

[0040] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. An oxygen mask capable of absorbing and detecting end-tidal carbon dioxide, characterized in that: The invention comprises a mask body, wherein a detection box and an adsorption box are arranged on the inner surface of the mask body, wherein a detection substance is contained in the detection box, wherein the detection substance is used to detect the concentration of carbon dioxide, wherein the adsorption substance is contained in the adsorption box, wherein the adsorption substance can adsorb the carbon dioxide exhaled by the patient, wherein a plurality of air outlet holes are arranged on the mask body, wherein the mask body is provided with a plurality of oxygen channels, wherein the air inlet of the oxygen channel is located on the outer surface of the mask body, and the air outlet of the oxygen channel is located on the inner surface of the mask body; There are two oxygen channels, and the gas outlets of the two oxygen channels are respectively located on two sides of the detection box and the adsorption box; The detection substance is litmus particles or litmus paper. A liquid inlet is arranged on the side wall of the detection box. A micro-pressure membrane is arranged at the liquid inlet. A liquid storage capsule is arranged outside the micro-pressure membrane. Distilled water is contained in the liquid storage capsule.

2. The oxygen inhalation mask capable of absorbing and detecting end-tidal carbon dioxide according to claim 1, characterized in that: The detection box and the adsorption box are fixed against each other.

3. The oxygen inhalation mask capable of absorbing and detecting end-tidal carbon dioxide according to claim 1, characterized in that: The material of the liquid storage bag is rubber, and the material of the micro-pressure membrane is PVC.

4. The oxygen inhalation mask capable of absorbing and detecting end-tidal carbon dioxide according to claim 1, characterized in that: The adsorbent is nanocarbon.

5. The oxygen inhalation mask capable of absorbing and detecting end-tidal carbon dioxide according to claim 1, characterized in that: The detection box and the adsorption box are both rectangular box structures. The box openings of the detection box and the adsorption box are both provided with mesh surfaces, and the outer surfaces of the mesh surfaces are provided with sealing stickers.

6. The oxygen inhalation mask capable of absorbing and detecting end-tidal carbon dioxide according to claim 1, characterized in that: Absorbent cotton is placed in the detection box.

7. The oxygen inhalation mask capable of absorbing and detecting end-tidal carbon dioxide according to claim 1, characterized in that: Elastic straps are connected to both sides of the mask body.

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