Mouth-nose mask washing, filtering and ventilating device

Abstract

The invention relates to the technical field of artificial respiration instruments, in particular to a mouth-nose mask washing and filtering ventilation device which comprises a mouth-nose mask worn on the face of a patient and a breathing bag connected to the mouth-nose mask and used for assisting the patient in breathing, a breathing tube is arranged between the mouth-nose mask and the breathing bag, and a control sleeve is detachably connected to the joint of the breathing bag and the breathing tube. The side portion of the lower end of the breathing tube is communicated with an expiration tube, the expiration tube is located on the upper side of the control sleeve, the breathing bag is detachably connected with a washing and filtering box used for washing and filtering air through an air suction tube, the washing and filtering box is connected with the expiration tube, and an air collecting fan is arranged at the bottom of the washing and filtering box. The problems that in the prior art, an artificial respirator cannot effectively treat air inhaled and exhaled by a patient, the body health of the patient and surrounding people is easily affected, the use effect is poor, the air inlet or outlet frequency cannot be adjusted according to the breathing frequency of the patient, the use requirement of the patient cannot be met, and the use cost is low are solved. The adjustability and the applicability are poor.

Description

Technical Field

[0001] The invention relates to the technical field of artificial respiration apparatus, in particular to an oronasal mask filter-washing ventilation device. Background Art

[0002] Nowadays, ventilators are an effective means of artificially replacing the autonomous ventilation function. They have been widely used in respiratory failure caused by various reasons, anesthesia respiratory management during major surgery, respiratory support therapy and emergency resuscitation. They occupy a very important position in the field of modern medicine. However, existing simple ventilators are difficult to work stably without the use of professionals. For many people who are on the verge of death, it is difficult to get the constant company of professionals or professional ventilators. Moreover, when transporting patients for emergency treatment, the existing simple ventilators still need to be held by doctors.

[0003] A Chinese patent with publication number CN211301598U discloses an internal suction artificial respirator for cardiovascular medicine, which solves the disadvantage of the existing simple artificial respirator that it is inconvenient for the rescuer during the rescue process. The invention comprises a valve body, wherein the valve body is respectively connected with a mask and a balloon through threads, the upper and lower parts of the mask are respectively connected with a head spring strap and a chin spring strap, the other end of the balloon is connected with an air storage bag through threads, and a resuscitation shell is sleeved on the outer side of the balloon, a servo motor and a PLC controller are fixed with bolts on one side of the top of the resuscitation shell, a battery is fixed with bolts on the other side of the top of the resuscitation shell, rotating rods are connected inside the two sides of the resuscitation shell through bearings, and the two rotating rods are driven by a servo motor and a transmission belt to realize synchronous rotation, driving the splint to realize reverse synchronous transmission, realizing the function of squeezing the balloon together and separating and releasing the balloon, achieving the function of automatically squeezing the balloon and freeing the hands of the rescuer.

[0004] At present, artificial respirators such as the above-mentioned ones directly deliver untreated air to the patient's mouth and nose, and the exhaled gas is directly discharged without being treated. This will cause harmful gases in the air to enter the patient's respiratory tract, or the gas containing pathogens exhaled by the patient to enter the air, resulting in the inability to ensure the safety of the patient and the surrounding people. The use effect is poor, and it is also unable to adapt to the patient's breathing frequency, so that it cannot meet the patient's use needs, and the adjustability and applicability are poor. Summary of the invention

[0005] The purpose of the present invention is to provide an oronasal mask filter-washing ventilation device, which overcomes the problem that the artificial respirator in the prior art cannot effectively process the air inhaled and exhaled by the patient, which easily affects the health of the patient and the surrounding people, has a poor use effect, and cannot adjust the frequency of air intake or air outflow according to the patient's breathing frequency, so as to fail to meet the patient's use needs and has poor adjustability and applicability.

[0006] In order to achieve the above object, the technical solution adopted by the present invention to solve the technical problem is: A mouth-nose mask filter-wash ventilation device is designed, which can distinguish the inhalation and exhalation states through the inhalation valve assembly and the exhalation valve assembly, and effectively process the inhaled and exhaled gases of the patient, which can effectively prevent the impact on the patient and the surrounding personnel and improve its use effect. At the same time, the frequency of the inlet and outlet of the device can be adjusted through the valve control mechanism to adapt to the patient's breathing frequency. It is easy to use and simple to operate, and is very practical. The specific plan is as follows: An oronasal mask filter-washing ventilation device comprises an oronasal mask worn on the face of a patient, and a breathing bag connected to the oronasal mask for assisting the patient's breathing, a breathing tube is arranged between the oronasal mask and the breathing bag, and a control sleeve is detachably connected to the connection between the breathing bag and the breathing tube; The lower end side of the breathing tube is connected to an exhalation tube, and the exhalation tube is located on the upper side of the control sleeve; The breathing bag is detachably connected to a filter box for filtering air through an inhalation pipe, the filter box is connected to the exhalation pipe, and an air collecting fan is arranged at the bottom of the filter box.

[0007] Preferably, an exhalation valve assembly is provided in the exhalation tube, and an inhalation valve assembly is provided in the breathing tube, and the inhalation valve assembly is located at the lower side of the exhalation valve assembly.

[0008] Preferably, the inhalation valve assembly includes a first baffle ring and a first valve plate, the first baffle ring is arranged in the exhalation pipe and located at the connecting end of the exhalation pipe and the breathing pipe, and the upper end of the first valve plate is hinged to the outer upper end of the first baffle ring.

[0009] Preferably, the inhalation valve assembly comprises a second baffle ring and a second valve plate, the second baffle ring is arranged on the inner side of the lower end of the breathing tube, and one end of the second valve plate is hinged to one end of the upper side of the second baffle ring; The bottom of the second valve plate is detachably connected with a valve control mechanism, the valve control mechanism is arranged in the installation sleeve, and the valve control mechanism is connected to the breathing bag through a tripod.

[0010] Preferably, a collar is connected to the bottom of the second valve plate, and the collar is connected to the valve control mechanism via a lock.

[0011] Preferably, the valve control mechanism comprises a motor, a driving tooth, a driven shifting tooth and a push-pull strip, the motor is arranged inside the control sleeve, and the driving tooth is connected to the output end of the motor; There are two driven shift teeth, which are rotatably connected in the control sleeve via a rotating shaft, the front side of the driven shift teeth is set as a full tooth surface, and the rear side is set as a half tooth surface, and the two driven shift teeth are respectively engaged with the left and right sides of the active tooth via the full tooth surface; The upper end of the push-pull strip is connected to the lock buckle, and the lower end of the push-pull strip is connected to the tripod and is located at the rear side of the active tooth; Racks are respectively arranged on the left and right sides of the middle part of the push-pull bar, and the two driven shifting teeth are alternately meshed with the two sides of the racks on both sides through the half tooth surface.

[0012] Preferably, the tripod comprises a guide slide rod, a pull rod and a connecting cap, one end of the guide slide rod is fixedly connected to the upper end of the connecting cap, and the other end of the guide slide rod is connected to the lower end of the push-pull bar; There are two pulling rods, one end of each of which is rotatably connected to both sides of the lower end of the connecting cap, and the other end of each of which is connected to the inner walls of the left and right sides of the breathing bag.

[0013] Preferably, the filter washing box is divided into an air outlet area and an air inlet area at equal distances by a partition, and both the air outlet area and the air inlet area are provided with filter washing components; The top of the air outlet area is provided with a first connection port, the first connection port is connected to the exhalation pipe, and the bottom of the air outlet area is provided with a second connection port, the second connection port is connected to the air outlet pipe; A third connection port is arranged at the top of the air intake area, the third connection port is connected to the air intake pipe, and the air collecting fan is arranged at the bottom of the air intake area.

[0014] Preferably, the filter washing assembly includes electrostatic filter cotton, a HEPA filter and activated carbon, and the HEPA filter, the electrostatic filter cotton and the activated carbon are arranged in sequence from top to bottom in the air outlet area, and the HEPA filter, the electrostatic filter cotton and the activated carbon are arranged in sequence from bottom to top in the air inlet area.

[0015] Preferably, the mouth and nose mask is connected with an adjustable strap, and the outer surface of the control sleeve is provided with a control button.

[0016] The beneficial effects of the present invention are: The present invention improves the passive breathing function of the simple ventilator while purifying the inhaled and exhaled gases, replacing the manual squeezing of the breathing bag to assist the patient's inhalation, and realizes the switching of active and passive breathing modes through a simple structure, thereby enriching the functions of the device, being beneficial to the treatment effect of respiratory patients, reducing the burden on medical staff, and ensuring the purification of the patient's breathing gas.

[0017] The breathing tube in the present invention can be disassembled by the control sleeve, which is not only conducive to the simple switching of the breathing mode, but also convenient for adjusting and repairing the valve control mechanism.

[0018] The present invention is provided with valve components in both the exhalation tube and the breathing tube, which can effectively distinguish the inhalation and exhalation states. The gas washing effect of the filter box can not only ensure that the patient breathes clean air, but also prevent the patient's exhaled gas from affecting the surrounding environment. It is very safe and reliable.

[0019] The present invention connects the breathing bag with the valve control mechanism through a tripod, which can ensure that when the valve control mechanism drives the inhalation valve assembly to open and close, the breathing bag is synchronously extended and retracted, so that the air treated by the filter box can enter the mouth and nose mask in time for the patient to breathe. The linkage is high, and the speed of the motor can be adjusted according to the patient's breathing frequency, thereby adjusting the opening and closing frequency of the inhalation valve assembly, and finally synchronizing the inlet and outlet frequency with the patient's breathing frequency, so as to improve the adjustability and applicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of an oral and nasal mask filter-washing and ventilation device of the present invention; Figure 2 A rear view of an oral-nasal mask filter-washing ventilation device according to the present invention; Figure 3 It is a schematic diagram of the installation of a breathing bag in an oral and nasal mask filter-washing ventilation device of the present invention; Figure 4 for Figure 3 Schematic diagram of the cross section at AA in the middle; Figure 5 for Figure 4 A partial enlarged schematic diagram of point B in the middle; Figure 6 It is a structural schematic diagram of a tripod in an oral and nasal mask washing, filtering and ventilation device of the present invention; Figure 7 It is a schematic diagram of the installation of a valve control mechanism in an oral and nasal mask filter-washing and ventilation device of the present invention; Figure 8 A diagram showing the connection relationship between a push-pull strip and a second valve plate in an oral-nasal mask washing, filtering and ventilation device of the present invention; Fig. 9 It is a schematic structural diagram of a driven shifting tooth in an oral and nasal mask washing and filtering ventilation device of the present invention; Fig.10 A side view of a driven shifting tooth in an oral and nasal mask filter and ventilation device of the present invention; Fig.11 A side view of a filter washing box in an oral and nasal mask filter washing and ventilation device of the present invention; Fig.12 for Fig.11Schematic diagram of the cross section at CC; Fig.13 It is a structural schematic diagram of a control sleeve in an oral and nasal mask filter-washing and ventilation device of the present invention; Fig.14 The present invention is a schematic diagram of the structure of a lock in an oral and nasal mask washing, filtering and ventilation device.

[0021] In the figure: 1-oronasal mask; 11-adjustable strap; 12-breathing tube; 121-second retaining ring; 122-second valve plate; 1221-ring; 13-expiratory tube; 131-first retaining ring; 132-first valve plate; 2-breathing bag; 21-inhalation tube; 22-guide slide; 3-control sleeve; 31-control button; 4-wash filter box; 41-first connection port; 42-third connection port; 43-second connection port; 44-septum Plate; 45-inlet area; 46-outlet area; 47-electrostatic filter cotton; 48-HEPA filter; 49-activated carbon; 5-valve control mechanism; 51-motor; 52-driving gear; 53-driven gear; 531-full tooth surface; 532-half tooth surface; 54-push-pull bar; 541-rack; 6-outlet pipe; 7-air collecting fan; 8-tripod; 81-guide slide rod; 82-pull rod; 83-connecting cap; 9-lock buckle. DETAILED DESCRIPTION

[0022] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with embodiments and drawings. The exemplary embodiments of the present invention and their description are only used to explain the present invention and are not intended to limit the present invention.

[0023] In the following description, a large number of specific details are set forth in order to provide a thorough understanding of the present invention. However, it is apparent to one of ordinary skill in the art that these specific details are not necessarily employed to practice the present invention. In other embodiments, in order to avoid obscuring the present invention, well-known structures, circuits, materials, or methods are not specifically described.

[0024] Throughout the specification, references to "one embodiment," "an embodiment," "an example," or "an example" mean that a particular feature, structure, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment of the present invention. Therefore, the phrases "one embodiment," "an embodiment," "an example," or "an example" appearing in various places throughout the specification do not necessarily all refer to the same embodiment or example. In addition, particular features, structures, or characteristics may be combined in one or more embodiments or examples in any suitable combination and / or sub-combination. In addition, it will be appreciated by those of ordinary skill in the art that the figures provided herein are for illustrative purposes and that the figures are not necessarily drawn to scale. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0025] In the description of the present invention, the directions or positional relationships indicated by terms such as “front”, “rear”, “left”, “right”, “up”, “down”, “vertical”, “horizontal”, “high”, “low”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the scope of protection of the present invention.

[0026] like Figure 1-14 As shown, the present invention provides an oronasal mask filter-washing ventilation device, comprising an oronasal mask 1 worn on the patient's face, the patient can use an adjustable strap 11 arranged on the oronasal mask 1 to wear the oronasal mask 1 on the patient's mouth and nose position, so as to assist the patient to breathe, and a breathing bag 2 connected to the oronasal mask 1 for assisting the patient to breathe, the breathing bag 2 can assist the patient to perform passive breathing through the expansion and contraction of the breathing bag 2, a breathing tube 12 is arranged between the oronasal mask 1 and the breathing bag 2, and a control sleeve is detachably connected to the connection between the breathing bag 2 and the breathing tube 12 The lower end side of the control sleeve 3 and the breathing tube 12 are connected with an exhalation tube 13, and the exhalation tube 13 is located on the upper side of the control sleeve 3. The exhalation tube 13 is used to discharge the waste gas generated during the patient's breathing process. The breathing bag 2 is detachably connected with a filter box 4 for filtering air through the inhalation tube 21. The filter box 4 is connected to the exhalation tube 13. The filter box 4 can purify the patient's exhaled gas and the air to be inhaled to avoid affecting the patient's breathing and the surrounding environment. An air collecting fan 7 is arranged at the bottom of the filter box 4, and the air collecting fan 7 is conducive to collecting air into the filter box 4.

[0027] In the above scheme, an exhalation valve assembly is arranged in the exhalation tube 13, and an inhalation valve assembly is arranged in the breathing tube 12, and the inhalation valve assembly is located at the lower side of the exhalation valve assembly.

[0028] As an optimized technical solution of the present invention, the cooperation between the inhalation valve assembly and the exhalation valve assembly can effectively distinguish the inhalation and exhalation states, ensuring that the patient can breathe clean air.

[0029] In the above scheme, the inhalation valve assembly includes a first baffle ring 131 and a first valve plate 132. The first baffle ring 131 is arranged in the exhalation pipe 13 and is located at the connecting end of the exhalation pipe 13 and the breathing pipe 12. The upper end of the first valve plate 132 is hinged to the upper end of the outer side of the first baffle ring 131.

[0030] As an optimized technical solution of the present invention, the first valve plate 132 is hinged on the outer side of the upper end of the first baffle ring 131 to ensure that the first valve plate 132 can only be flipped outward, so that when the patient exhales, the exhaled gas can push the first valve plate 132 open, causing the exhaled gas to be discharged from the exhalation tube 13, and when inhaling, the first valve plate 132 will close under the action of its own gravity, achieving the effect of opening when exhaling and closing when inhaling.

[0031] In the above scheme, the inhalation valve assembly includes a second baffle ring 121 and a second valve plate 122. The second baffle ring 121 is arranged on the inner side of the lower end of the breathing tube 12. One end of the second valve plate 122 is hinged to the upper end of the second baffle ring 121. The bottom of the second valve plate 122 is detachably connected with a valve control mechanism 5. The valve control mechanism 5 is arranged in the mounting sleeve 3, and the valve control mechanism 5 is connected to the breathing bag 2 through a tripod 8.

[0032] As an optimized technical solution of the present invention, it can be seen from the positional relationship and connection relationship between the second valve plate 122 and the second baffle ring 121 that the second valve plate 122 can only be flipped upward to open, and the opening and closing of the second valve plate 122 is achieved by the driving of the valve control mechanism 5, that is, the effect of opening when inhaling and closing when exhaling is achieved.

[0033] In the above solution, a collar 1221 is connected to the bottom of the second valve plate 122 , and the collar 1221 is connected to the valve control mechanism 5 via a lock buckle 9 .

[0034] As an optimization technical solution of the present invention, the second valve plate 122 is connected to the valve control mechanism 5 by locking the lock buckle 9 on the ring 1221, which can not only ensure the effectiveness of the connection, but also provide effective activity space for the flipping of the second valve plate 122 to prevent it from getting stuck.

[0035] In the above scheme, the valve control mechanism 5 includes a motor 51, a driving tooth 52, a driven tooth 53 and a push-pull strip 54. The motor 51 is arranged on the inner side of the control sleeve 3, the driving tooth 52 is connected to the output end of the motor 51, the number of the driven teeth 53 is two, and the two driven teeth 53 are rotatably connected in the control sleeve 3 through a rotating shaft 533. The front side of the driven tooth 53 is set as a full tooth surface 531, and the rear side is set as a half tooth surface 532. The two driven teeth 53 are respectively meshed with the left and right sides of the driving tooth 52 through the full tooth surface 531. The upper end of the push-pull strip 54 is connected to the lock buckle 9, and the lower end of the push-pull strip 54 is connected to the tripod 8 and is located on the rear side of the driving tooth 52. Racks 541 are respectively arranged on the left and right sides of the middle part of the push-pull strip 54, and the two driven teeth 53 are alternately meshed with the two sides of the racks 541 on both sides through the half tooth surface 532.

[0036] As an optimized technical solution of the present invention, a control button 31 is provided on the outside of the control sleeve 3, which can be used to adjust and control the rotation speed of the motor 51 installed inside it, so as to achieve the purpose of adjusting the opening and closing frequency of the intake valve assembly, wherein the motor 51 drives the active tooth 52 to rotate, and the active tooth 52 drives the two driven shift teeth 53 to rotate through the full tooth surface 531 meshing with it on both sides, and then it can alternately mesh with the racks 541 on both sides of the push-pull strip 54 through the two half tooth surfaces 532, and then it can drive the push-pull strip 54 to move up and down, and the up and down movement of the push-pull strip 54 can drive the opening and closing of the second valve plate 122, thereby controlling the on-off of the intake pipe 21.

[0037] In the above scheme, the tripod 8 includes a guide slide rod 81, a pulling rod 82 and a connecting cap 83. One end of the guide slide rod 81 is fixedly connected to the upper end of the connecting cap 83, and the other end of the guide slide rod 81 is connected to the lower end of the push-pull strip 54. There are two pulling rods 82. One end of the two pulling rods 82 is rotatably connected to the two sides of the lower end of the connecting cap, and the other ends of the two pulling rods 82 are respectively connected to the inner walls on the left and right sides of the breathing bag 2.

[0038] As an optimized technical solution of the present invention, a guide slide 22 is provided at the upper end of the inner side of the breathing bag 2. The upper end of the guide slide bar 81 passes through the guide slide bar 22 and is connected to the lower end of the push-pull bar 54. The guide slide bar 22 plays a role of fixed guidance, which can make the guide slide bar 81 move up and down smoothly, and then drive the connecting cap 83 to move up and down. Since one end of the pulling rod 82 is rotatably connected to the connecting cap 83, and the other end is fixedly connected to the inner wall of the breathing bag 2, during the movement of the connecting cap 83, the two pulling rods 82 will approach each other to drive the two sides of the breathing bag 2 to contract, and during the downward movement of the connecting cap 83, the two pulling rods 82 will move away from each other, thereby driving the two sides of the breathing bag 2 to expand, thereby simulating manual pinching of the breathing bag 2 to assist the patient in passive breathing.

[0039] In the above scheme, the filter washing box 4 is equidistantly divided into an air outlet area 46 and an air inlet area 45 by a partition 44, and filter washing components are provided in the air outlet area 46 and the air inlet area 45. A first connecting port 41 is provided at the top of the air outlet area 46, and the first connecting port 41 is connected to the exhalation pipe 13. A second connecting port 43 is provided at the bottom of the air outlet area 46, and the second connecting port 43 is connected to the air outlet pipe 6. A third connecting port 42 is provided at the top of the air inlet area, and the third connecting port 42 is connected to the air intake pipe 21. The air collecting fan 7 is provided at the bottom of the air inlet area 45.

[0040] As an optimized technical solution of the present invention, a filter washing assembly is provided in both the air inlet area 45 and the air outlet area 46, which can realize the filter washing work on the air and the patient's exhaled gas, ensure that the patient's inhaled and exhaled gas are processed into clean gas, and avoid affecting the patient and the surrounding environment. The connection port is provided to facilitate the smooth disassembly and assembly of the various components of the device, which is beneficial to the replacement and maintenance of the device.

[0041] In the above scheme, the filter washing component includes an electrostatic filter cotton 47, a HEPA filter 48 and activated carbon 49. The HEPA filter 48, the electrostatic filter cotton 47 and the activated carbon 49 are arranged in sequence from top to bottom in the air outlet area 46, and the HEPA filter 48, the electrostatic filter cotton 47 and the activated carbon 49 are arranged in sequence from bottom to top in the air inlet area 45.

[0042] As an optimized technical solution of the present invention, when the patient inhales, the air enters the air inlet area 45 from the bottom of the filter washing box 4 through the air collecting fan 7, and passes through the HEPA filter 48, the electrostatic filter cotton 47 and the activated carbon 49 from bottom to top to effectively treat the air, thereby ensuring that the air inhaled by the patient is clean air; when the patient exhales, the exhaled gas enters the air outlet area 46 through the exhalation tube 13, and passes through the HEPA filter 48, the electrostatic filter cotton 47 and the activated carbon 49 from top to bottom to effectively treat the exhaled gas, thereby avoiding the exhaled gas from affecting the surrounding environment, thereby achieving effective filtering of the inhaled and exhaled gases.

[0043] Specific implementation cases: When the device is used for artificial assisted passive respiration, the oronasal mask 1 is worn on the patient's mouth and nose through the adjustable strap 11, the air collecting fan 7 is turned on, and the speed of the motor 51 is turned on and adjusted according to the patient's breathing frequency through the control button 31.

[0044] At that time, the air is sucked into the air intake area 45 in the filter washing box 4 through the air collecting fan 7. After the air enters the air intake area 45, it will pass through the HEPA filter 48, the electrostatic filter cotton 47 and the activated carbon 49 from bottom to top to perform filter washing treatment on the air, and then enter the breathing bag 2 through the air intake pipe 21.

[0045] Next, the motor 51 will drive the active tooth 52 to rotate, and the active tooth 52 will drive the two driven shift teeth 53 to rotate through the full tooth surface 531 on both sides of the active tooth 52, and then it can alternately engage with the racks 541 on both sides of the push-pull bar 54 through the two half tooth surfaces 532, and then it can drive the push-pull bar 54 to move up and down, and the up and down movement of the push-pull bar 54 can drive the second valve plate 122 to open and close.

[0046] During the upward movement of the push-pull strip 54, that is, when the patient is in an inhalation state, the guide slide bar 81 will be synchronously driven to move upward, and the second valve plate 122 will flip upward and open. The guide slide bar 81 will use the pulling rod 82 to pull the breathing bag 2 to contract, and then it will squeeze the processed air in the breathing bag 2 through the opened second valve plate 122 from the breathing tube 12 into the oronasal mask 1 for the patient to breathe. During this process, the second valve plate 122 is in an open state and flips toward the exhalation tube 13 to block the exhalation tube 13, so that the processed air in the breathing bag 2 can only enter the oronasal mask 1 from the breathing tube 12.

[0047] During the downward movement of the push-pull bar 54, that is, when the patient is in the exhalation state, the guide slide bar 81 will be synchronously driven to move downward, and the second valve plate 122 will flip downward and close. The guide slide bar 81 will use the pulling rod 82 to push the breathing bag 2 to open. At the same time, the first valve plate 132 will be flushed open by the patient's exhaled gas, and the second valve plate 122 is in a closed state, so that the exhaled gas can only enter the air outlet area 46 from the top of the filter washing box 4 through the exhalation pipe 13, and then the air will be washed and filtered from the HEPA filter 48, the electrostatic filter cotton 47 and the activated carbon 49 from top to bottom, and finally discharged from the outlet pipe 6.

[0048] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An oronasal mask filter-washing ventilation device, comprising an oronasal mask (1) worn on the face of a patient, and a breathing bag (2) connected to the oronasal mask (1) for assisting the patient's breathing, characterized in that: A breathing tube (12) is provided between the oronasal mask (1) and the breathing bag (2); a control sleeve (3) is detachably connected to the connection between the breathing bag (2) and the breathing tube (12); The lower end side of the breathing tube (12) is connected to an exhalation tube (13), and the exhalation tube (13) is located on the upper side of the control sleeve (3); The breathing bag (2) is detachably connected to a filter box (4) for filtering air via an inhalation pipe (21); the filter box (4) is connected to the exhalation pipe (13); and an air collecting fan (7) is also provided at the bottom of the filter box (4).

2. The oronasal mask filter-washing ventilation device according to claim 1, characterized in that: An exhalation valve assembly is arranged in the exhalation tube (13), and an inhalation valve assembly is arranged in the breathing tube (12), wherein the inhalation valve assembly is located at the lower side of the exhalation valve assembly.

3. The oronasal mask filter-washing ventilation device according to claim 2, characterized in that: The inhalation valve assembly comprises a first retaining ring (131) and a first valve plate (132); the first retaining ring (131) is arranged in the exhalation pipe (13) and is located at the connection end between the exhalation pipe (13) and the breathing pipe (12); the upper end of the first valve plate (132) is hinged to the upper end of the outer side of the first retaining ring (131).

4. The oronasal mask filter-washing ventilation device according to claim 2, characterized in that: The air intake valve assembly comprises a second retaining ring (121) and a second valve plate (122), wherein the second retaining ring (121) is arranged on the inner side of the lower end of the breathing tube (12), and one end of the second valve plate (122) is hinged to one end of the upper side of the second retaining ring (121); The bottom of the second valve plate (122) is detachably connected to a valve control mechanism (5), the valve control mechanism (5) is arranged in the mounting sleeve (3), and the valve control mechanism (5) is connected to the breathing bag (2) via a tripod (8).

5. The oronasal mask filter-washing ventilation device according to claim 4, characterized in that: A collar (1221) is connected to the bottom of the second valve plate (122), and the collar (1221) is connected to the valve control mechanism (5) via a lock buckle (9).

6. The oronasal mask filter-washing ventilation device according to claim 5, characterized in that: The valve control mechanism (5) comprises a motor (51), a driving tooth (52), a driven shifting tooth (53) and a push-pull strip (54); the motor (51) is arranged inside the control sleeve (3), and the driving tooth (52) is connected to the output end of the motor (51); The number of the driven shift teeth (53) is two, and the two driven shift teeth (53) are rotatably connected in the control sleeve (3) via a rotating shaft (533); the front side of the driven shift teeth (53) is configured as a full tooth surface (531), and the rear side is configured as a half tooth surface (532); the two driven shift teeth (53) are respectively meshed with the left and right sides of the driving tooth (52) via the full tooth surface (531); The upper end of the push-pull strip (54) is connected to the lock buckle (9), and the lower end of the push-pull strip (54) is connected to the tripod (8) and is located behind the driving tooth (52); Racks (541) are respectively arranged on the left and right sides of the middle of the push-pull bar (54), and the two driven shifting teeth (53) are alternately meshed with the two sides of the racks (541) via the half tooth surfaces (532).

7. An oronasal mask filter-washing ventilation device according to claim 6, characterized in that: The tripod (8) comprises a guide slide rod (81), a pull rod (82) and a connecting cap (83), one end of the guide slide rod (81) is fixedly connected to the upper end of the connecting cap (83), and the other end of the guide slide rod (81) is connected to the lower end of the push-pull bar (54); There are two pulling rods (82), one end of each of the pulling rods (82) is rotatably connected to the two sides of the lower end of the connecting cap, and the other end of each of the pulling rods (82) is connected to the inner walls of the left and right sides of the breathing bag (2).

8. The oronasal mask filter-washing ventilation device according to claim 1, characterized in that: The filter washing box (4) is divided into an air outlet area (46) and an air inlet area (45) at equal intervals by a partition plate (44), and both the air outlet area (46) and the air inlet area (45) are provided with filter washing components; The top of the air outlet area (46) is provided with a first connection port (41), the first connection port (41) being connected to the exhalation pipe (13); the bottom of the air outlet area (46) is provided with a second connection port (43), the second connection port (43) being connected to the air outlet pipe (6); A third connection port (42) is provided at the top of the air intake area, the third connection port (42) being connected to the air intake pipe (21), and the air collecting fan (7) is provided at the bottom of the air intake area (45).

9. An oronasal mask filter-washing ventilation device according to claim 8, characterized in that: The filter wash assembly comprises an electrostatic filter cotton (47), a HEPA filter (48) and activated carbon (49); the HEPA filter (48), the electrostatic filter cotton (47) and the activated carbon (49) are arranged in sequence from top to bottom in the air outlet area (46); and the HEPA filter (48), the electrostatic filter cotton (47) and the activated carbon (49) are arranged in sequence from bottom to top in the air inlet area (45).

10. The oronasal mask filter-washing ventilation device according to claim 1, characterized in that: The oronasal mask (1) is connected to an adjustable strap (11), and the outer surface of the control sleeve (3) is provided with a control button (31).

Images