Mouth-to-mouth artificial respirator

Abstract

The utility model relates to a mouth-to-mouth artificial respirator, and belongs to the technical field of medical instruments. Comprising a patient gas hood which is suitable for covering the mouth of a patient; the rescuer gas hood is suitable for covering the mouth of a rescuer; the conveying pipe is communicated with the patient gas hood and the rescuer gas hood; the isolating membrane is arranged in the conveying pipe and is used for isolating saliva from droplets; the tongue pressure guide plate is integrally arranged in the patient gas hood; wherein the tongue pressure guide plate is configured in a way that when the patient gas hood is arranged at the mouth of a patient, the tongue pressure guide plate applies pressure to the middle of the tongue of the patient from top to bottom so as to open the airway. The device can actively assist a rescuer in opening the airway of a patient, and ensures that gas blown by the rescuer can bypass tongue obstacles and smoothly enter the respiratory tract of the patient.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of medical instruments, and particularly relates to a mouth-to-mouth artificial respirator. BACKGROUND

[0002] In the emergency situation of respiratory and cardiac arrest of a patient, a rescuer immediately carries out cardiopulmonary resuscitation (CPR), especially mouth-to-mouth artificial respiration, which is a key measure to gain a time window for subsequent professional medical rescue. The rescuer maintains the basic metabolic needs of the patient by blowing air into the patient's lungs and using the oxygen (about 16%-18%) still contained in the exhaled air, and the mechanism of action includes passive ventilation support and stimulation of respiratory central nervous reflexes.

[0003] However, the traditional mouth-to-mouth artificial respiration auxiliary device has the disadvantage that in patients with respiratory and cardiac arrest, the whole body muscles are relaxed, and the base of the tongue will fall backward due to gravity, thereby completely blocking the airway of the throat. The existing breathing mask is only a passive isolation and ventilation tool and does not have any function of opening the airway.

[0004] Therefore, the rescuer still has to manually open the airway of the patient using professional techniques (such as the "pressing forehead and lifting chin method") when using these masks. For ordinary rescuers who have not been strictly trained, it is difficult to correctly and continuously perform this action in panic, resulting in that even if the mask is used, the blown gas is completely blocked by the falling tongue and cannot enter the lungs, ultimately leading to the failure of first aid. UTILITY MODEL CONTENT

[0005] To solve the above technical problems, the utility model provides a mouth-to-mouth artificial respirator.

[0006] In order to achieve the above purpose, the utility model adopts the technical scheme of:

[0007] Provided is a mouth-to-mouth artificial respirator, comprising:

[0008] A patient gas mask adapted to cover the patient's mouth;

[0009] A rescuer gas mask adapted to cover the rescuer's mouth;

[0010] A transmission pipe connecting the patient gas mask and the rescuer gas mask;

[0011] A separation film provided in the transmission pipe for separating saliva and droplets;

[0012] A tongue pressing guide plate integrally provided in the interior of the patient gas mask;

[0013] The tongue-pressing guide plate is configured to press the middle part of the patient's tongue from top to bottom when the patient mask is placed on the patient's mouth, so as to open the airway.

[0014] Preferably, comprising:

[0015] An air leakage prevention structure, which is an elastic sealing ring arranged on the periphery of the patient mask.

[0016] Preferably, comprising:

[0017] A swing structure arranged at the connection position of the rescuer mask and the delivery pipe;

[0018] The swing structure is configured to allow multi-angle swinging of the rescuer mask.

[0019] Preferably, the swing structure comprises a bellows section that connects the delivery pipe and the rescuer mask.

[0020] Preferably, the upper surface of the tongue-pressing guide plate is formed as an airflow channel for guiding the airflow from the delivery pipe to pass over the tongue.

[0021] Preferably, the lower surface of the tongue-pressing guide plate is formed as an anti-slip surface for preventing the tongue-pressing guide plate from slipping on the tongue when it is pressed.

[0022] Preferably, the delivery pipe comprises:

[0023] A first pipe section and a second pipe section;

[0024] The first pipe section and the second pipe section are coaxially connected, and the first pipe section can slide relative to the second pipe section.

[0025] Preferably, comprising:

[0026] A pressure relief valve arranged on the patient mask;

[0027] The pressure relief valve is configured to automatically open when the pressure in the patient mask exceeds a preset safety threshold.

[0028] Preferably, comprising:

[0029] An oxygen interface arranged on the patient mask or the delivery pipe for connecting an external oxygen source to supplement oxygen.

[0030] Preferably, the tongue-pressing guide plate integrally extends tooth pads on both sides thereof.

[0031] The dental pad block is configured to be adapted to be accommodated between the upper and lower dentition of the patient when the tongue pressure guide plate is placed on the tongue of the patient.

[0032] The utility model provides a mouth-to-mouth artificial respiration device, the beneficial effect of the utility model is reflected in:

[0033] When the utility model is used, the utility model can actively assist the rescuer to open the airway of the patient, and ensure that the gas blown by the rescuer can bypass the tongue obstacle and smoothly enter the respiratory tract of the patient. BRIEF DESCRIPTION OF DRAWINGS

[0034] Fig. 1 One of the front views of the mouth-to-mouth artificial respiration device provided by the utility model;

[0035] Fig. 2 The second front view of the mouth-to-mouth artificial respiration device provided by the utility model;

[0036] Fig. 3 One of the structure schematic views of the tongue pressure guide plate in the mouth-to-mouth artificial respiration device provided by the utility model;

[0037] Fig. 4 The second structure schematic view of the tongue pressure guide plate in the mouth-to-mouth artificial respiration device provided by the utility model.

[0038] BRIEF DESCRIPTION OF DRAWINGS

[0039] 1, patient gas mask; 2, rescuer gas mask; 3, conveying pipe; 4, tongue pressure guide plate; 401, air flow channel; 402, anti-skid surface; 5, isolation membrane; 6, air leakage prevention structure; 7, swing structure; 8, pressure relief valve; 9, oxygen interface; 10, dental pad block. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0041] As Figs. 1 to 4 shown, the embodiment of the utility model provides a mouth-to-mouth artificial respiration device, which comprises a patient gas mask 1, a rescuer gas mask 2 and a conveying pipe 3 connecting the two.

[0042] Specifically, the patient mask 1 is used to cover the mouth of the patient. The rescuer mask 2 is used to cover the mouth of the rescuer. The delivery tube 3 establishes a gas channel between the patient mask 1 and the rescuer mask 2.

[0043] Inside the delivery tube 3, a separation film 5 is provided. The separation film 5 is used to effectively isolate the saliva and droplets between the rescuer and the patient when the rescuer is blowing, so as to prevent cross infection or transmission of infectious diseases during the first aid process.

[0044] On the basis of the above, inside the patient mask 1, a tongue pressure guide plate 4 is integrally provided.

[0045] When the rescuer places the patient mask 1 on the patient's mouth, the tongue pressure guide plate 4 will correspondingly be located above the patient's tongue and apply a specific pressure to the middle part of the patient's tongue from top to bottom. Preferably, the tongue pressure guide plate 4 is arc-shaped structure.

[0046] In patients with respiratory and cardiac arrest, the tongue root often falls backward due to muscle relaxation and blocks the airway. By applying this downward pressure to the middle of the tongue, the tongue pressure guide plate 4 can force the relaxed tongue to indirectly drive the tongue root away from the throat wall. Thus, the artificial resuscitator can actively assist the rescuer in opening the patient's airway when in use, ensuring that the gas blown by the rescuer can bypass the tongue obstacle and smoothly enter the patient's respiratory tract.

[0047] In a preferred embodiment, the periphery of the patient mask 1 is provided with an air leakage prevention structure 6.

[0048] Specifically, the air leakage prevention structure 6 can be an elastic sealing ring. The elastic sealing ring is configured to tightly fit the patient's facial skin to prevent gas leakage from the mask edge during blowing, thereby ensuring the effectiveness of ventilation.

[0049] In a preferred embodiment, a swing structure 7 is further included. The swing structure 7 is provided at the connection position of the rescuer mask 2 and the delivery tube 3.

[0050] Specifically, the swing structure 7 is configured to allow the rescuer mask 2 to swing at multiple angles relative to the delivery tube 3.

[0051] In an emergency rescue scene, the rescuer may not be able to be directly above the patient's head, for example, in a narrow space (such as in a car) or when another rescuer is performing chest compression. The swing structure 7 allows the rescuer to effectively blow from the side of the patient or other non-standard positions without moving the patient's head or forcibly adjusting his own posture, thereby improving the coordination efficiency and success rate of first aid.

[0052] More specifically, the swing structure 7 comprises a bellows section.

[0053] The bellows section is integrally connected between the end of the delivery tube 3 and the interface of the rescuer mask 2, and keeps them in communication.

[0054] The tube wall of the bellows section has continuous annular or spiral folds, which endows it with high flexibility and bendability. Therefore, the rescuer can easily bend the rescuer mask 2 to any desired angle without causing the airflow passage 401 to kink or occlude. The bellows section not only realizes the function of multi-angle swinging, but also allows a certain degree of stretching or compression, further enhancing the rescuer's operational freedom in complex rescue environments.

[0055] In a preferred embodiment, in order to further improve ventilation efficiency and optimize the airflow path, the upper surface of the tongue-pressing guide plate 4 is formed into an airflow passage 401.

[0056] The airflow passage 401 can be a longitudinal groove in particular. Based on this, an unobstructed guide path is provided for the airflow from the delivery tube 3. When the rescuer blows, the airflow is directionally guided by the airflow passage 401, enabling it to efficiently pass over the pressed tongue and concentrate on blowing to the laryngeal part and airway entrance, thereby improving the effective ventilation amount into the lungs.

[0057] In a preferred embodiment, the lower surface of the tongue-pressing guide plate 4 (i.e. the surface in contact with the patient's tongue) is formed into an anti-slip surface 402.

[0058] Considering that the patient's tongue surface is usually wet and slippery, the tongue-pressing guide plate 4 has the risk of slipping when applying downward pressure. The anti-slip surface 402 is used to increase the static friction between the tongue-pressing guide plate 4 and the tongue surface when it exerts pressure, thereby effectively preventing it from slipping in position on the tongue.

[0059] Specifically, the anti-slip surface 402 can be realized by providing mechanical structures on the lower surface of the guide plate, such as multiple longitudinal or transverse raised ribs, fine granular protrusions, or grid-like textures. Alternatively, the anti-slip surface 402 can also be realized by coating or cladding a layer of medical-grade flexible material with high friction coefficient on the lower surface of the guide plate.

[0060] This structure ensures that the tongue-pressing guide plate 4 can be stably fixed in the middle position of the tongue, preventing it from accidentally sliding too deep into the throat (which may cause vomiting) or slipping out of the mouth, thereby ensuring the effective execution of the downward pressure action and enabling it to reliably open the airway.

[0061] In a preferred embodiment, in order to facilitate the carrying and storage of the device, the delivery tube 3 is telescopic.

[0062] Specifically, the delivery tube 3 comprises a first tube segment and a second tube segment. The first tube segment is coaxially sleeved with the second tube segment, for example, the first tube segment has a smaller diameter than the second tube segment, so that the first tube segment can be inserted into the interior of the second tube segment.

[0063] The first tube segment can slide and telescope relative to the second tube segment. When not in use, the rescuer can push the first tube segment into and accommodate in the second tube segment, so that the total length of the delivery tube 3 is significantly shortened, and the entire respirator occupies a smaller volume, facilitating its storage or carrying as an emergency supply. When in use, the first tube segment can be pulled out of the second tube segment to form a gas flow passage 401 of sufficient length. After being stretched in place, a limiting structure or a friction fit structure can be provided to prevent accidental retraction.

[0064] In a preferred embodiment, in order to improve the safety of artificial respiration, the device further comprises a pressure relief valve 8.

[0065] The pressure relief valve 8 is preferably provided on the patient mask 1, for example on the side wall of the mask body.

[0066] The pressure relief valve 8 is configured to automatically open and discharge excess gas to the atmosphere when the gas pressure inside the patient mask 1 exceeds a predetermined safety threshold.

[0067] The purpose is to prevent the rescuer (especially non-professionals in a state of tension) from blowing too hard or too fast, resulting in excessive ventilation pressure. Excessive gas pressure has a great risk of forcing gas into the patient's esophagus and stomach, rather than the lungs, which is called "gastric insufflation". Gastric insufflation not only reduces the effectiveness of first aid, but also easily causes the patient to regurgitate, vomit, and then cause airway obstruction or aspiration pneumonia, which is extremely dangerous to the patient.

[0068] By providing this pressure relief valve 8, the ventilation pressure can be limited within a safe range (for example, a predetermined safety threshold can be set at about 20 cmH2O), ensuring that the gas enters the lungs first, while minimizing the risk of gastric insufflation and its complications.

[0069] In a preferred embodiment, in order to further improve the effectiveness of first aid, the device further comprises an oxygen interface 9. The oxygen interface 9 can be provided on the mask body of the patient mask 1, or on the wall of the delivery tube 3. The interface is configured to be adapted to connect an external oxygen source, such as the standard pipeline of an emergency oxygen cylinder.

[0070] Thus, the rescuer is allowed to perform mouth-to-mouth artificial respiration while additionally supplying high concentration oxygen to the patient. The rescuer's exhaled gas contains only about 16%-18% oxygen, and the pure oxygen introduced through the oxygen interface 9 can be mixed with the gas blown by the rescuer to increase the inhaled oxygen concentration delivered to the patient, so as to improve the patient's hypoxic state and improve the success rate of resuscitation.

[0071] In a preferred embodiment, in order to prevent the patient from biting the teeth during the first aid process and blocking the ventilation, the tongue pressure guide plate 4 integrally extends the tooth pad 10 on both sides thereof (i.e. along the longitudinal edges thereof).

[0072] The tooth pad 10 is configured to be accommodated between the upper and lower teeth (i.e. between the upper and lower molars) of the patient when the tongue pressure guide plate 4 is properly placed and presses downward on the patient's tongue.

[0073] Based on this, first, the tooth pad 10 can be bitten by the patient's upper and lower teeth as a physical barrier, thereby forcing the patient's mouth to remain open, effectively preventing the patient from biting the airway or flattening the device due to unconscious biting; second, by providing support between the teeth, it also helps to stably maintain the tongue pressure guide plate 4 in the center of the oral cavity, ensuring that it can continuously press the middle of the tongue and protect the airflow passage 401 formed by the upper surface of the tongue pressure guide plate 4 to remain unobstructed.

[0074] Although embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A mouth-to-mouth resuscitator, characterized in that, The patient mask is adapted to cover the mouth of a patient. The rescuer mask is adapted to cover the mouth of a rescuer. A delivery tube is connected between the patient mask and the rescuer mask. A separation membrane is arranged in the delivery tube to separate saliva and droplets. A tongue-pressing guide is integrally arranged in the patient mask. The tongue-pressing guide is configured to press the middle part of the patient's tongue from top to bottom when the patient mask is placed on the patient's mouth to open the airway. The tongue-pressing guide is in an arc shape, and the upper surface is formed as an airflow channel and the lower surface is formed as an anti-skid surface to fix the tongue-pressing guide on the middle part of the tongue and prevent it from sliding into the throat or out of the mouth. The tongue-pressing guide integrally extends tooth pads on both sides thereof. The tooth pads are configured to be accommodated between the upper and lower teeth of the patient when the tongue-pressing guide is placed on the patient's tongue. The patient mask includes an air leakage prevention structure in the form of an elastic sealing ring arranged around the periphery of the patient mask.

2. The mouth-to-mouth resuscitator according to claim 1, wherein The rescuer mask includes a swing structure arranged at the connection position between the rescuer mask and the delivery tube. The swing structure is configured to allow multi-angle swinging of the rescuer mask.

3. The mouth-to-mouth resuscitator according to claim 1, wherein The swing structure includes a bellows section that connects the delivery tube and the rescuer mask. The delivery tube includes: A first tube section and a second tube section.

4. The mouth-to-mouth resuscitator according to claim 3, wherein The first tube section is coaxially connected to the second tube section and can slide relative to the second tube section.

5. The mouth-to-mouth resuscitator according to claim 1, wherein The patient mask includes a pressure relief valve. The pressure relief valve is configured to automatically open when the pressure in the patient mask exceeds a predetermined safety threshold. The patient mask or the delivery tube includes an oxygen interface for connecting an external oxygen source to supplement oxygen.

6. The mouth-to-mouth resuscitator according to claim 1, wherein ​ ​ ​ 7. The mouth-to-mouth resuscitator according to claim 1, wherein ​ ​

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