Negative pressure air inlet breathing mask

Abstract

The embodiment of the invention provides a negative pressure air inlet breathing mask, and relates to the technical field of breathing equipment. A negative pressure air inlet breathing mask comprises a breathing mask body and a light box body, piston cylinder barrels are fixedly connected to the two sides of an inner cavity of the light box body, and a control panel is embedded in one side of the light box body; the piston cylinder barrel is provided with an acting assembly, the acting assembly comprises a servo motor embedded in the position, close to the bottom of the piston cylinder barrel, of the light box body, and an inner cavity of the light box body is provided with a supply assembly used in cooperation with the acting assembly. An oxygen conveying assembly communicated and matched with the breathing mask is arranged on one side of the supply assembly, the oxygen conveying assembly comprises a micro heater fixed to the outer side of the light box body, and a detection assembly used in cooperation with the breathing mask and the oxygen conveying assembly is arranged on the other side of the supply assembly. On the premise of positive and negative pressure accurate regulation and control supply, a positive pressure oxygen supply and negative pressure detection self-adaption combined mode is adopted, and effective oxygen supply treatment is carried out on a patient.

Description

Technical Field

[0001] The invention belongs to the technical field of respiratory equipment, and in particular relates to a negative pressure air intake breathing mask. Background Art

[0002] A breathing mask is usually composed of a headband, a forehead pad, a mask frame, an interface cover, an elastic band and a silicone sealing cover. It is in direct contact with the patient and ventilates through the patient's mouth and nasal cavity. The breathing mask is suitable for covering the nose or mouth and nose, and is used in conjunction with a simple respirator or a ventilator. It is used as a channel for gas to enter the patient's body. It must be used strictly in accordance with the doctor's orders or instructions to avoid affecting the efficacy of the medicine or increasing side effects. Breathing masks are often used in respiratory departments.

[0003] In the prior art (publication number CN219440171U, patent name is a patent application for an emergency sputum suction mask), a storage tube is provided, and a liquid storage tank in the storage tube can store the sucked liquid to prevent the sucked liquid from contaminating the emergency environment; an air inlet unidirectional diaphragm and an air outlet unidirectional diaphragm are provided in the compressed air circle, and the two diaphragms are used in combination to keep the sputum suction tube in a negative pressure state, which can effectively improve the efficiency of sputum suction. In the process of implementing the technical solution, it is found that there are at least the following problems in the prior art.

[0004] When a respiratory mask is used in conjunction with a respiratory device to supply oxygen to a patient with breathing difficulties, medical staff are usually required to assemble an oxygen tank, a ventilator, and several oxygen supply hoses before they can provide oxygen to the patient. This is rather troublesome and cannot provide effective oxygen therapy to the patient by using a combination of positive pressure oxygen supply and negative pressure detection, based on the premise of precise regulation of the supply by positive and negative pressure. Summary of the invention

[0005] The present application aims to at least solve one of the technical problems in the prior art that it is not possible to provide effective oxygen therapy to patients by combining positive pressure oxygen supply and negative pressure detection adaptively under the premise of accurate regulation of positive and negative pressure supply. To this end, the present application proposes a negative pressure air intake breathing mask.

[0006] To achieve the above purpose, the specific technical solutions of the present invention are as follows:

[0007] A negative pressure air intake breathing mask, comprising a breathing mask and a light box body, wherein both sides of the inner cavity of the light box body are fixedly connected with piston cylinders, and a control panel is embedded on one side of the light box body;

[0008] The piston cylinder is provided with a working assembly, and the working assembly includes a servo motor embedded in the lightweight box body near the bottom of the piston cylinder, and the inner cavity of the lightweight box body is provided with a supply assembly used in conjunction with the working assembly;

[0009] An oxygen supply component connected to and coordinated with the breathing mask is arranged on one side of the supply component, and the oxygen supply component includes a micro heater fixed on the outside of the lightweight box body; a detection component used in conjunction with the breathing mask and the oxygen supply component is arranged on the other side of the supply component.

[0010] Preferably: the working assembly also includes a main bevel gear fixed on the output shaft of the servo motor, and sub-bevel gears are meshed on both sides of the main bevel gear, a swing arm is fixedly connected to the outer side of the sub-bevel gear, and a connecting rod is hinged on the other side of the swing arm, and a piston head is hinged on the other end of the connecting rod, and the top of the piston cylinder is connected to a four-way valve, and the top of the four-way valve is connected to an intake pipe with an intake valve.

[0011] Preferably: the supply component includes a four-way valve, one end of which is connected to a negative pressure tube with an electric control valve, and the outer end of the negative pressure tube is connected to a negative pressure tank embedded in the lightweight box body, the other end of the four-way valve is connected to a booster tube with an exhaust valve, and the outer end of the booster tube is connected to a booster tank embedded in the lightweight box body, the inner end of the negative pressure tank is connected to a Y-shaped tube, and the inner end of the booster tank is connected to a five-way tube, the inner ends of the Y-shaped tube and the five-way tube are connected to a three-way valve, and the top end of the three-way valve is connected to a straight-through tube.

[0012] Preferably: the oxygen supply component also includes a liquid storage pot fixed on the other side of the lightweight box body and connected to the five-way pipe in one-way, and the micro heater is connected to the liquid storage pot in one-way through the five-way pipe, the outer end of the liquid storage pot is connected to a flow valve, and the bottom end of the flow valve is threadedly connected to an oxygen cylinder, the top end of the liquid storage pot is connected to an oxygen supply pipe, and the top end of the oxygen supply pipe is connected to a drainage manifold connected to and matched with the straight pipe, the top end of the drainage manifold is connected to a hose, and the top end of the hose is connected to an extension pipe embedded in and matched with the breathing mask.

[0013] Preferably: the detection component includes a balloon connected to the inner end of the extension tube, and the inner end of the balloon is provided with a sampling hole, the balloon is provided with oxygen supply holes all around, and the other end of the drainage manifold is connected to a sampling tube, and the bottom end of the sampling tube is connected to a detection pot fixedly matched with a lightweight box body, the bottom end of the detection pot is threadedly connected to a screw cap, and a biosensor is embedded in the center of the screw cap, and the top of the biosensor is fixedly connected to a detection probe used in conjunction with the detection pot.

[0014] Preferably: ventilation nets cooperating with air intake of the air suction pipe are embedded on both sides of the top of the lightweight box body, and a first pressure sensor is embedded on the top of the negative pressure tank, and a second pressure sensor is embedded on the top of the boost tank.

[0015] Preferably: a temperature sensor is embedded in the outer end of the liquid storage pot, and a flow meter is embedded in the outer end of the flow valve, and side holes are opened around the extension tube close to the balloon, and the sampling hole has the largest aperture, the oxygen supply hole has the second largest aperture, and the side hole has the smallest aperture.

[0016] Preferably, the oxygen delivery pipe is connected with a liquid collecting manifold, and the bottom end of the liquid collecting manifold is unidirectionally connected with a condensation box fixedly matched with the lightweight box body, and the bottom end of the condensation box is unidirectionally connected with a reflux pipe connected with a liquid storage pot.

[0017] Preferably: a front end cover is embedded in the front end of the breathing mask, and a sealing gasket is threadedly connected to the front end cover, and the front end cover of the sealing gasket is provided with a blocking cap threadedly connected to the front end cover, and the blocking cap is embedded and connected to the extension tube.

[0018] Preferably: the rear end of the breathing mask is provided with a silicone lip and adopts a double-layer design, and a small alarm light is fixedly connected to one side of the lightweight box body close to the ventilation net, and the bottoms of both sides of the lightweight box body are fixedly connected to suspension frames.

[0019] The negative pressure air intake breathing mask of the present invention has the following advantages:

[0020] 1. The negative pressure air intake breathing mask is first provided with a unified driving source by a servo motor, and the main bevel gear drives two sets of auxiliary bevel gears to rotate. The two sets of auxiliary bevel gears drive the piston heads on the two connecting rods through two sets of swing arms to perform reciprocating work in the two sets of piston cylinders, and then the boost pressure and negative pressure generated in the two sets of reciprocating work in the piston cylinders are discharged through two sets of four-way valves, and two suction pipes provide auxiliary air intake measures to provide work supply for subsequent boost and negative pressure.

[0021] 2. This kind of negative pressure air intake breathing mask, then, the negative pressure generated in the two groups of piston cylinders is supplied to the two groups of negative pressure tanks for temporary storage through the negative pressure pipes on the two groups of four-way valves, and the boost pressure generated in the two groups of piston cylinders is supplied to the two groups of boost tanks for temporary storage through the boost pipes on the two groups of four-way valves. According to actual needs, the negative pressure temporarily stored in the two groups of negative pressure tanks or the boost pressure temporarily stored in the two groups of boost tanks are controlled, and correspondingly supplied to the three-way valve through the Y-tube or the five-way pipe, and then the negative pressure or the boost pressure is transported and supplied by the straight pipe.

[0022] 3. The negative pressure air intake breathing mask, when the patient needs to be supplied with oxygen, firstly, the micro heater provides heat source supply to the clean water in the liquid storage pot under the cooperation of boost pressure, and then the pure oxygen in the oxygen cylinder is supplied to the clean water in the liquid storage pot after being detected by the flow valve, and the pure oxygen supplied to the clean water is heated, forcing the moist and hot oxygen to be discharged from the oxygen supply pipe, drainage manifold, hose and extension pipe in sequence through the sampling hole and oxygen supply hole on the balloon, providing moist and hot oxygen supply to the patient's mouth, and the moist and hot oxygen is discharged laterally from the side hole on the extension pipe, providing moist and hot oxygen supply to the patient's nose, and the temperature range of the supplied moist and hot oxygen is between 37℃±0.2℃, which is beneficial to the protection and treatment of the patient's respiratory tract;

[0023] When it is necessary to conduct bacterial detection on the patient's exhaled gas and saliva, the negative pressure temporarily stored in the two sets of negative pressure tanks transmits negative pressure suction to the sampling holes and oxygen supply holes on the balloon in turn through the oxygen supply tube, drainage manifold, hose and extension tube, and negatively absorbs the exhaled gas and saliva in the patient's mouth through the sampling holes and oxygen supply holes on the balloon. Similarly, the side holes on the extension tube also negatively absorb the gas inhaled into the breathing mask through the patient's nose, and then reaches the detection pot through the sampling tube on the drainage manifold. The biosensor and detection probe on the screw cover perform Brucella detection on the exhaled gas and oral saliva reaching the detection pot. After the Brucella detection is completed, the patient's oral saliva that falls on the screw cover is screwed out for test paper comparison detection to ensure the accuracy of the detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a schematic structural diagram of a negative pressure air intake breathing mask of the present invention;

[0026] Figure 2 A bottom view of a negative pressure air intake breathing mask structure of the present invention;

[0027] Figure 3 It is a partial side cross-sectional view of a negative pressure air intake breathing mask structure of the present invention;

[0028] Figure 4 It is a partial upward cross-sectional view of a negative pressure air intake breathing mask structure of the present invention;

[0029] Figure 5 A bottom view of the breathing mask, oxygen supply tube, sampling tube, drainage manifold and hose structure of the present invention;

[0030] Figure 6 It is a side cross-sectional view of the piston cylinder, working assembly, negative pressure tank and booster tank structure of the present invention;

[0031] Figure 7 It is a cross-sectional exploded view of the piston, cylinder and working assembly structure of the present invention;

[0032] Figure 8 It is a partial rear view of the supply assembly and oxygen delivery assembly structure of the present invention;

[0033] Fig. 9It is a partial front view of the supply assembly and oxygen delivery assembly structure of the present invention;

[0034] Fig.10 It is a partial side view of the supply component and the detection component structure of the present invention;

[0035] Fig.11 It is a partial exploded view of the supply component and the detection component structure of the present invention;

[0036] Fig.12 An exploded view of the breathing mask and dilution assembly of the present invention;

[0037] Fig.13 It is an exploded bottom view of the breathing mask, front end cover, sealing gasket and blocking cover structure of the present invention;

[0038] Fig.14 It is a rear view of the lightweight box structure of the present invention.

[0039] Explanation of the marks in the figure: 1. Breathing mask; 2. Lightweight box body; 3. Piston cylinder; 4. Working assembly; 41. Servo motor; 42. Main bevel gear; 43. Sub bevel gear; 44. Swing arm; 45. Connecting rod; 46. Piston head; 47. Four-way valve; 48. Inhalation pipe; 5. Supply assembly; 51. Negative pressure pipe; 52. Boosting pipe; 53. Negative pressure tank; 54. Boosting tank; 55. Y-type pipe; 56. Five-way pipe; 57. Three-way valve; 58. Straight pipe; 6. Oxygen supply assembly; 61. Micro heater; 62. Liquid storage pot; 63. Flow valve; 64. Oxygen cylinder; 65. Oxygen supply pipe; 66. Drainage manifold; 67. Hose; 68. Extension pipe; 7. Detection assembly; 71. Balloon; 72, sampling hole; 73, oxygen supply hole; 74, sampling tube; 75, detection pot; 76, screw cap; 77, biosensor; 78, detection probe; 8, dilution assembly; 81, side end cover; 82, flow equalization net; 83, concentration sensor; 84, filter box; 85, ventilation grille; 86, outer filter material; 87, inner filter material; 88, snap cover; 9, ventilation net; 10, first pressure sensor; 11, second pressure sensor; 12, temperature sensor; 13, side hole; 14, liquid collection manifold; 15, condensation box; 16, reflux pipe; 17, front end cover; 18, sealing gasket; 19, plugging cover; 20, silicone lip; 21, small alarm light; 22, suspension bracket. DETAILED DESCRIPTION

[0040] The present invention is specifically described below in conjunction with the accompanying drawings and specific embodiments:

[0041] like Figure 1-Figure 14As shown, a negative pressure air intake breathing mask of the present invention comprises a breathing mask 1 and a lightweight box body 2, both sides of the inner cavity of the lightweight box body 2 are fixedly connected with piston cylinders 3, and a control panel is embedded in one side of the lightweight box body 2; a front end cover 17 is embedded in the front end of the breathing mask 1, and a sealing gasket 18 is threadedly connected to the front end cover 17, and the front end cover of the sealing gasket 18 is provided with a blocking cover 19 threadedly connected to the front end cover 17, which blocks the front end of the breathing mask 1 and is also convenient for disassembling and cleaning the breathing mask 1, and a silicone lip 20 is provided at the rear end of the breathing mask 1 and adopts a double-layer design, which plays a flexible protective role between the patient's face and the breathing mask 1, and a small alarm light 21 is fixedly connected to one side of the lightweight box body 2 close to the ventilation network 9, which provides real-time warning of the operating status, and a hanging bracket 22 is fixedly connected to the bottom of both sides of the lightweight box body 2, which is convenient for hanging and positioning the lightweight box body 2 on the armrest of the bed;

[0042] A working component 4 is provided on the piston cylinder 3, and the working component 4 includes a servo motor 41 embedded in the lightweight box body 2 near the bottom of the piston cylinder 3, which provides work supply for subsequent pressurization and negative pressure. The inner cavity of the lightweight box body 2 is provided with a supply component 5 used in combination with the working component 4 to deliver and supply negative pressure or boost pressure; one side of the supply component 5 is provided with an oxygen supply component 6 connected and coordinated with the breathing mask 1, and the oxygen supply component 6 includes a micro heater 61 fixed on the outside of the lightweight box body 2 to provide moist and hot oxygen supply to the patient's nose, and the temperature range of the supplied moist and hot oxygen is between 37°C±0.2°C, which is beneficial to the protective treatment of the patient's respiratory tract. The other side of the supply component 5 is provided with a detection component 7 used in combination with the breathing mask 1 and the oxygen supply component 6 to detect Brucella in the patient's exhaled gas and oral saliva.

[0043] like Figure 5-Figure 13 As shown, the working assembly 4 also includes a main bevel gear 42 fixed on the output shaft of the servo motor 41, and both sides of the main bevel gear 42 are meshed with auxiliary bevel gears 43. The servo motor 41 provides a unified driving source, and the main bevel gear 42 drives the two sets of auxiliary bevel gears 43 to rotate. The outer side of the auxiliary bevel gear 43 is fixedly connected with a swing arm 44, and the other side of the swing arm 44 is hinged with a connecting rod 45, and the other end of the connecting rod 45 is hinged with a piston head 46. The two sets of auxiliary bevel gears 43 drive the piston heads 46 on the two connecting rods 45 through the two sets of swing arms 44 to perform reciprocating work in the two sets of piston cylinders 3;

[0044] The top of the piston cylinder 3 is connected to a four-way valve 47, and the top of the four-way valve 47 is connected to an air intake pipe 48 with an air intake valve. The boost pressure and negative pressure generated in the two groups of piston cylinders 3 doing reciprocating work are discharged through the two groups of four-way valves 47, and the two air intake pipes 48 provide auxiliary air intake measures to provide work supply for subsequent boost and negative pressure.

[0045] The supply assembly 5 includes a four-way valve 47, one end of which is connected to a negative pressure pipe 51 with an electric control valve, and the outer end of the negative pressure pipe 51 is connected to a negative pressure tank 53 embedded in the lightweight box body 2. The negative pressure generated in the two groups of piston cylinders 3 is supplied to the two groups of negative pressure tanks 53 for temporary storage through the negative pressure pipes 51 on the two groups of four-way valves 47. The other end of the four-way valve 47 is connected to a booster pipe 52 with an exhaust valve, and the outer end of the booster pipe 52 is connected to a booster tank 54 embedded in the lightweight box body 2. The booster pressure generated in the two groups of piston cylinders 3 is supplied to the two groups of booster tanks 54 for temporary storage through the booster pipes 52 on the two groups of four-way valves 47.

[0046] The inner end of the negative pressure tank 53 is connected to a Y-shaped tube 55, and the inner end of the boosting tank 54 is connected to a five-way tube 56. The inner ends of the Y-shaped tube 55 and the five-way tube 56 are connected to a three-way valve 57, and the top of the three-way valve 57 is connected to a straight tube 58, which controls the negative pressure temporarily stored in the two groups of negative pressure tanks 53 or the boosting pressure temporarily stored in the two groups of boosting tanks 54, and supplies them to the three-way valve 57 through the Y-shaped tube 55 or the five-way tube 56, and then the negative pressure or the boosting pressure is transported and supplied by the straight tube 58;

[0047] Both sides of the top of the lightweight box body 2 are embedded with ventilation nets 9 that cooperate with the air intake of the suction pipe 48. While providing a clean air source supply to the suction pipe 48, it also performs ventilation and heat dissipation treatment in the lightweight box body 2. A first pressure sensor 10 is embedded at the top of the negative pressure tank 53, and a second pressure sensor 11 is embedded at the top of the boost tank 54, which respectively perform real-time detection of the pressures in the negative pressure tank 53 and the boost tank 54.

[0048] The oxygen supply assembly 6 also includes a liquid storage pot 62 fixed on the other side of the lightweight box body 2 and connected to the five-way pipe 56 in one direction, and a micro heater 61 is connected to the liquid storage pot 62 in one direction through the five-way pipe 56, and the micro heater 61 provides a heat source supply to the clean water in the liquid storage pot 62 under the cooperation of the boost pressure, and the outer end of the liquid storage pot 62 is connected to a flow valve 63, and the bottom end of the flow valve 63 is threadedly connected to an oxygen cylinder 64, and then the pure oxygen in the oxygen cylinder 64 is supplied to the clean water in the liquid storage pot 62 after being detected by the flow valve 63, and the pure oxygen supplied to the clean water is heated to generate humid hot oxygen;

[0049] The top of the liquid storage pot 62 is connected to an oxygen supply pipe 65, and the top of the oxygen supply pipe 65 is connected to a drainage manifold 66 connected to and matched with the straight pipe 58, and the top of the drainage manifold 66 is connected to a hose 67, and the top of the hose 67 is connected to an extension pipe 68 embedded with the breathing mask 1, forcing the moist and hot oxygen to be discharged from the oxygen supply pipe 65, the drainage manifold 66, the hose 67 and the extension pipe 68 in sequence through the sampling hole 72 and the oxygen supply hole 73 on the balloon 71, providing moist and hot oxygen supply to the patient's mouth, and the side hole 13 on the extension pipe 68 discharges the moist and hot oxygen laterally, providing moist and hot oxygen supply to the patient's nose, and the temperature range of the supplied moist and hot oxygen is between 37°C±0.2°C, which is beneficial to the protection and treatment of the patient's respiratory tract;

[0050] The detection assembly 7 includes a balloon 71 connected to the inner end of the extension tube 68, and a sampling hole 72 is opened at the inner end of the balloon 71. Oxygen supply holes 73 are opened around the balloon 71. The negative pressure temporarily stored in the two groups of negative pressure tanks 53 is sequentially transmitted from the oxygen supply tube 65, the drainage manifold 66, the hose 67 and the extension tube 68 to the sampling hole 72 and the oxygen supply hole 73 on the balloon 71. The gas exhaled from the patient's mouth and the saliva in the mouth are negatively sucked through the sampling hole 72 and the oxygen supply hole 73 on the balloon 71. At the same time, the side hole 13 on the extension tube 68 also negatively sucks the gas exhaled into the breathing mask 1 from the patient's nose, thereby completing the sampling of the exhaled gas and the oral saliva samples.

[0051] The other end of the drainage manifold 66 is connected to a sampling tube 74, and the bottom end of the sampling tube 74 is connected to a detection pot 75 fixedly matched with the lightweight box body 2. The bottom end of the detection pot 75 is threadedly connected to a screw cover 76, and a biosensor 77 is embedded in the center of the screw cover 76. The top of the biosensor 77 is fixedly connected to a detection probe 78 used in conjunction with the detection pot 75. The exhaled gas and oral saliva samples pass through the sampling tube 74 on the drainage manifold 66 and reach the detection pot 75. The biosensor 77 and the detection probe 78 on the screw cover 76 perform Brucella detection on the exhaled gas and oral saliva reaching the detection pot 75. After the Brucella detection is completed, the patient's oral saliva falling on the screw cover 76 is screwed out for test paper comparison detection to ensure the accuracy of the detection;

[0052] A temperature sensor 12 is embedded at the outer end of the liquid storage pot 62 to monitor the temperature in the liquid storage pot 62 in real time to ensure that the temperature inside the liquid storage pot 62 reaches a suitable range for the human body, and a flow meter is embedded at the outer end of the flow valve 63. Side holes 13 are opened around the extension tube 68 near the balloon 71, which is conducive to the oxygen spreading from the side holes 13 to the breathing mask 1 area for the patient to breathe oxygen through the nose. At the same time, the gas exhaled from the patient's nose to the breathing mask 1 is also subjected to negative pressure extraction sampling processing. The aperture of the sampling hole 72 is the largest, the aperture of the oxygen delivery hole 73 is the second largest, and the aperture of the side hole 13 is the smallest, which is conducive to the delivery of oxygen and the sampling of exhaled gas and oral saliva.

[0053] The oxygen supply pipe 65 is connected to a liquid collecting manifold 14, and the bottom end of the liquid collecting manifold 14 is unidirectionally connected to a condensation box 15 fixedly matched with the lightweight box body 2, and the bottom end of the condensation box 15 is unidirectionally connected to a return pipe 16 connected and matched with the liquid storage pot 62, so as to intercept and condense the accumulated water droplets in the hot and humid oxygen transported in the oxygen supply pipe 65, and then the recovered liquid condensed in the condensation box 15 is returned to the liquid storage pot 62 through the return pipe 16, so that the clean water in the liquid storage pot 62 is replenished and the overheated clean water is cooled, and the sealing cover 19 is embedded and connected with the extension pipe 68.

[0054] like Figure 12-13 As shown, during the period of oxygen supply breathing for the patient, due to the different oxygen tolerance and physical fitness of each patient, the oxygen concentration needs to be accurately controlled, oxygen poisoning is prone to occur, which is relatively dangerous, and does not have a filtering and sustained release function. Dilution components 8 are arranged on both sides of the breathing mask 1, and the dilution component 8 includes side end covers 81 arranged on both sides of the breathing mask 1, and the side end covers 81 are embedded with a flow equalization network 82, which performs flow equalization on the ventilation gas entering the breathing mask 1 through the two groups of side end covers 81 to avoid turbulence of the oxygen in the breathing mask 1, which is beneficial to the patient's normal oxygen inhalation, and a concentration sensor 83 is embedded in the center of the flow equalization network 82 to actually measure the oxygen concentration in the breathing mask 1. The filter box 84 is provided with a filter box 84 at the outer end of the side end cover 81, and a ventilation grille 85 is provided at the bottom array of the filter box 84, so that the outside air can enter the filter box 84 from the ventilation grille 85, and the gas in the breathing mask 1 can be ventilated and discharged from the ventilation grille 85 through the filter box 84, so as to achieve the purpose of slow release of oxygen. The inner cavity of the filter box 84 is sequentially embedded with an outer filter material 86 and an inner filter material 87 from the outside to the inside, and a snap cover 88 is clamped on the outer side of the filter box 84, so as to perform double filtration on the ventilation gas entering the filter box 84 and the discharged gas, so as to improve the cleanliness of the inlet and outlet gases, so as to avoid cross infection to the patients.

[0055] A negative pressure air intake breathing mask working principle: first, the lightweight box body 2 is hung and clamped on one side of the bed through two groups of hanging frames 22, and then the breathing mask 1 is worn on the patient's mouth and nose, and the balloon 71 is contained in the patient's mouth, which can prevent the patient from biting the tongue during spasm, and also support the patient's mouth, which is conducive to oxygen inhalation. After the double-layer silicone lip 20 provides flexible protection between the breathing mask 1 and the patient's face, the servo motor 41 is controlled to start and drive the main bevel gear 42 to rotate, and the main bevel gear 42 drives the swing arms 44 on the two groups of secondary bevel gears 43 to rotate accordingly, and the two groups of swing arms 44 drive the piston heads 46 on the two connecting rods 45 to reciprocate in the two groups of piston cylinders 3, and the boost generated by the two groups of piston heads 46 in the two groups of piston cylinders 3 due to the exhaust and return air intake The positive pressure and negative pressure are supplied to the two groups of four-way valves 47. According to actual needs, two suction pipes 48 with suction valves can provide auxiliary air intake compensation. Then, the negative pressure generated by the return suction in the two groups of piston cylinders 3 is supplied to the two groups of negative pressure tanks 53 for temporary storage through the negative pressure pipes 51 on the two groups of four-way valves 47. At the same time, the boost pressure generated by the process exhaust in the two groups of piston cylinders 3 is supplied to the two groups of boost tanks 54 for temporary storage through the boost pipes 52 on the two groups of four-way valves 47. Similarly, the two groups of negative pressure tanks 53 and boost tanks 54 are supplied with corresponding negative pressure and boost pressure until the negative pressure in the two groups of negative pressure tanks 53 and the boost pressure in the boost tank 54 reach the preset maximum values ​​of the first pressure sensor 10 and the second pressure sensor 11, and the servo motor 41 is turned off and the process exhaust and return suction work are stopped.

[0056] When oxygen is needed for patients with breathing difficulties, the heat source generated by the pre-activated micro heater 61 is first supplied to the five-way pipe 56 in a one-way manner, and the five-way pipe 56 then supplies the heat source to the clean water injected in advance into the liquid storage pot 62 and heats it, so that the clean water temperature in the liquid storage pot 62 is maintained between 37°C±0.2°C after being detected by the temperature sensor 12, and the pure oxygen in the oxygen cylinder 64 is supplied to the clean water in the liquid storage pot 62 after flow detection by the flow valve 63, and aerated and heated, and then the clean water in the liquid storage pot 62 that has been heated is aerated and heated to form moist hot oxygen with a temperature between 37°C±0.2°C and reaches the drainage manifold 66 through the oxygen supply pipe 65. At this time, the boost pressure temporarily stored in the two sets of booster tanks 54 is used to The humid hot oxygen is supplied to the three-way valve 57 through the five-way pipe 56, and then the straight pipe 58 delivers the humid hot oxygen that reaches the drainage manifold 66 to the balloon 71 through the hose 67 and the extension pipe 68 in sequence, and then the humid hot oxygen is released into the patient's oral cavity by the sampling hole 72 and the oxygen supply hole 73 on the balloon 71 with slow pressure, so that the patient can breathe oxygen at the mouth. At the same time, the humid hot oxygen that flows through the extension pipe 68 is released into the breathing mask 1 with slow pressure through the side hole 13, so that the patient can breathe oxygen at the nose. During the oxygen supply period, the humid hot oxygen before reaching the drainage manifold 66 will gather water droplets in the oxygen supply pipe 65 and drip from the liquid collecting manifold 14 into the condensation box 15 for condensation, and then flow back into the liquid storage pot 62 through the reflux pipe 16, so as to replenish clean water while preventing excessive moisture from causing liquid blockage in the patient's mouth and nose.

[0057] When it is necessary to sample and test the bacteria in the patient's exhaled gas and saliva, the negative pressure in the two groups of negative pressure tanks 53 is first supplied to the three-way valve 57 through the Y-tube 55, and the negative pressure is then transmitted through the straight pipe 58 through the drainage manifold 66, the hose 67 and the extension tube 68 to the balloon 71 in sequence. The negative pressure suction is then sucked and sampled by the sampling hole 72 and the oxygen supply hole 73 on the balloon 71. At the same time, the negative pressure suction transmitted to the extension tube 68 sucks and samples the exhaled gas from the patient's nose in the breathing mask 1 through the side hole 13, and then the sampled exhaled gas and secreted saliva samples are sucked and returned to the original path through the drainage manifold 66. The sampling tube 74 reaches the detection pot 75 in a sealed state, and then the biosensor 77 and the detection probe 78 on the screw cover 76 are used to detect Brucella. After the bacterial detection is completed, the biosensor 77 and the detection probe 78 on the screw cover 76 are screwed out, and the saliva sample falling on the screw cover 76 is correspondingly taken out for test paper detection, and the negative pressure sampling detection and the pressurized oxygen breathing are alternately performed, that is: oxygen supply is provided when the patient inhales, and negative pressure sampling detection is performed when the patient exhales. After obtaining enough exhaled gas and saliva samples, the negative pressure sampling work is stopped, and the continuous oxygen supply treatment is resumed;

[0058] During the continuous oxygen supply treatment for the patient, the gas exhaled by the patient passes through the equalizing net 82 in the two sets of side end covers 81, reaches the two sets of filter boxes 84, and is double-filtered by the outer filter material 86 and the inner filter material 87 therein, and then is discharged to the two sets of filter boxes 84 outside through the ventilation grille 85 to avoid infection to other people outside, and also to prevent the gas exhaled by the patient from accumulating in the breathing mask 1 to produce mist and water droplets. Similarly, the outside air also passes through the ventilation grille 85 to reach the two sets of filter boxes 84, and is double-filtered by the outer filter material 86 and the inner filter material 87 therein, and then passes through the equalizing net 82 in the two sets of side end covers 81 to reach the breathing mask 1, slowly releasing the breathing mask. 1, and during this period, the two groups of concentration sensors 83 monitor the oxygen concentration in the breathing mask 1 in real time to prevent the patient from oxygen poisoning due to excessive oxygen concentration. When it is necessary to replace the outer filter material 86 and the inner filter material 87 in the two groups of filter boxes 84, the snap covers 88 on the two groups of filter boxes 84 can be opened respectively and replaced with new outer filter materials 86 and inner filter materials 87. When it is necessary to disinfect and clean the breathing mask 1, first, the blocking cover 19 with the balloon 71 and the extension tube 68 is screwed off from the front end cover 17 on the breathing mask 1, and then the sealing gasket 18 is screwed off from the front end cover 17. The disassembled breathing mask 1 is fully disinfected and cleaned and can be reused.

[0059] It should be noted that the specific models and specifications of the servo motor 41 and micro heater 61, various valves and various sensors need to be selected and determined according to the actual specifications of the device, and the specific selection calculation method adopts the existing technology in this field, so it will not be repeated in detail.

[0060] The power supply circuits of the servo motor 41 , the micro heater 61 , various valves and various sensors are clear to those skilled in the art and will not be described in detail here.

[0061] It is to be understood that the present invention is described by some embodiments, and it is known to those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A negative pressure air intake breathing mask, comprising a breathing mask (1) and a lightweight box body (2), characterized in that: Both sides of the inner cavity of the lightweight box body (2) are fixedly connected with piston cylinders (3), and a control panel is embedded on one side of the lightweight box body (2); The piston cylinder (3) is provided with a working assembly (4), and the working assembly (4) comprises a servo motor (41) embedded in the lightweight box body (2) near the bottom of the piston cylinder (3), and the inner cavity of the lightweight box body (2) is provided with a supply assembly (5) used in conjunction with the working assembly (4); An oxygen supply component (6) connected to and matched with the breathing mask (1) is arranged on one side of the supply component (5), and the oxygen supply component (6) includes a micro heater (61) fixed on the outside of the lightweight box body (2); and a detection component (7) used in conjunction with the breathing mask (1) and the oxygen supply component (6) is arranged on the other side of the supply component (5).

2. A negative pressure air intake breathing mask according to claim 1, characterized in that: The working assembly (4) further comprises a main bevel gear (42) fixed on the output shaft of the servo motor (41), and both sides of the main bevel gear (42) are meshed with secondary bevel gears (43), the outer side of the secondary bevel gear (43) is fixedly connected to a swing arm (44), and the other side of the swing arm (44) is hinged with a connecting rod (45), the other end of the connecting rod (45) is hinged with a piston head (46), and the top of the piston cylinder (3) is connected to a four-way valve (47), and the top end of the four-way valve (47) is connected to an intake pipe (48) with an intake valve.

3. A negative pressure air intake breathing mask according to claim 2, characterized in that: The supply assembly (5) comprises a four-way valve (47), one end of which is connected to a negative pressure pipe (51) with an electric control valve, and the outer end of the negative pressure pipe (51) is connected to a negative pressure tank (53) embedded in the lightweight box body (2); the other end of the four-way valve (47) is connected to a booster pipe (52) with an exhaust valve, and the outer end of the booster pipe (52) is connected to a booster tank (54) embedded in the lightweight box body (2); the inner end of the negative pressure tank (53) is connected to a Y-shaped pipe (55), and the inner end of the booster tank (54) is connected to a five-way pipe (56); the inner ends of the Y-shaped pipe (55) and the five-way pipe (56) are connected to a three-way valve (57), and the top end of the three-way valve (57) is connected to a straight pipe (58).

4. A negative pressure air intake breathing mask according to claim 3, characterized in that: The oxygen supply assembly (6) further comprises a liquid storage pot (62) fixed on the other side of the lightweight box body (2) and connected to the five-way pipe (56) in one direction, and the micro heater (61) is connected to the liquid storage pot (62) in one direction through the five-way pipe (56), the outer end of the liquid storage pot (62) is connected to a flow valve (63), and the bottom end of the flow valve (63) is connected to an oxygen cylinder (64) through a thread, the top end of the liquid storage pot (62) is connected to an oxygen supply pipe (65), and the top end of the oxygen supply pipe (65) is connected to a drainage manifold (66) connected to and matched with the straight pipe (58), the top end of the drainage manifold (66) is connected to a hose (67), and the top end of the hose (67) is connected to an extension pipe (68) embedded and matched with the breathing mask (1).

5. A negative pressure air intake breathing mask according to claim 4, characterized in that: The detection assembly (7) comprises a balloon (71) connected to the inner end of the extension tube (68), and a sampling hole (72) is provided at the inner end of the balloon (71), oxygen supply holes (73) are provided around the balloon (71), and the other end of the drainage manifold (66) is connected to a sampling tube (74), and the bottom end of the sampling tube (74) is connected to a detection pot (75) fixedly matched with the lightweight box body (2), the bottom end of the detection pot (75) is threadedly connected to a screw cover (76), and a biosensor (77) is embedded in the center of the screw cover (76), and the top of the biosensor (77) is fixedly connected to a detection probe (78) used in conjunction with the detection pot (75).

6. A negative pressure air intake breathing mask according to claim 5, characterized in that: A ventilation net (9) cooperating with the air intake of the air intake pipe (48) is embedded on both sides of the top of the lightweight box body (2), and a first pressure sensor (10) is embedded on the top of the negative pressure tank (53), and a second pressure sensor (11) is embedded on the top of the boost tank (54).

7. A negative pressure air intake breathing mask according to claim 6, characterized in that: A temperature sensor (12) is embedded in the outer end of the liquid storage pot (62), and a flow meter is embedded in the outer end of the flow valve (63). Side holes (13) are opened around the extension tube (68) near the balloon (71), and the sampling hole (72) has the largest aperture, the oxygen supply hole (73) has the second largest aperture, and the side hole (13) has the smallest aperture.

8. A negative pressure air intake breathing mask according to claim 7, characterized in that: The oxygen supply pipe (65) is connected to a liquid collecting manifold (14), and the bottom end of the liquid collecting manifold (14) is unidirectionally connected to a condensation box (15) fixedly matched with the lightweight box body (2), and the bottom end of the condensation box (15) is unidirectionally connected to a return pipe (16) connected to and matched with the liquid storage pot (62).

9. A negative pressure air intake breathing mask according to claim 8, characterized in that: A front end cover (17) is embedded in the front end of the breathing mask (1), and a sealing gasket (18) is threadedly connected to the front end cover (17). The front end cover of the sealing gasket (18) is provided with a blocking cover (19) threadedly connected to the front end cover (17), and the blocking cover (19) is embedded and connected to the extension tube (68).

10. A negative pressure air intake breathing mask according to claim 9, characterized in that: The rear end of the breathing mask (1) is provided with a silicone lip (20) and adopts a double-layer design, and a small alarm light (21) is fixedly connected to one side of the lightweight box body (2) close to the ventilation net (9), and the bottoms of both sides of the lightweight box body (2) are fixedly connected to a suspension frame (22).

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