Positive pressure ventilation mask

Abstract

The utility model relates to the technical field of medical instruments, in particular to a positive pressure ventilation mask which comprises a mask body, an air filtering block is fixedly connected to the outer wall of the mask body, an air inlet pipe is detachably connected to the outer wall of the air filtering block, a vent hole and a containing cavity are formed in the middle of the air filtering block, and rotating rods a are rotationally connected to the inner walls of the two sides of the containing cavity. And a winding roller is detachably connected between the two rotating rods a. Limiting of the filter cloth is controlled through the pressing buckle mechanism, power is provided through the motor, the driving gear is driven to rotate, the driving gear is meshed with the transmission gear, and therefore the recycling roller is driven to rotate, the used filter cloth is wound and recycled, meanwhile, new filter cloth enters the bottom side of the vent hole, then the filter cloth is pressed through the pressing buckle mechanism, and the filter cloth is prevented from being damaged during use. In the whole process, manual replacement is not needed, the efficiency of replacing the filter cloth is greatly improved, the mask does not need to be taken down from the face of the patient, and the smoothness of the whole breathing process is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a positive pressure ventilation mask. Background Art

[0002] A positive airway pressure mask is a medical device used to provide oxygen or air support to patients through positive pressure ventilation, helping them maintain respiratory function. Primarily used for non-invasive ventilation therapy, a positive airway pressure mask can help patients increase oxygen intake and improve hypoventilation. It can also provide continuous positive pressure support during sleep, maintaining airway patency, preventing sleep apnea, relieving dyspnea symptoms, and improving oxygen supply.

[0003] Existing positive pressure ventilation masks need to ensure that their vents remain unobstructed at all times when in use. In order to prevent debris from entering the mask through the vents, the vents of the mask are generally equipped with filters or filter cloths. Since masks are generally disposable to avoid cross infection, but the same patient can use them multiple times, medical staff need to manually clean and replace the filters or filter cloths regularly to ensure unobstructed exhaust of the mask. The entire process of disassembly and assembly is relatively troublesome. Summary of the Invention

[0004] In order to solve the problem that it is troublesome to disassemble, assemble and replace the filter screen or filter cloth of the mask, the utility model provides a positive pressure ventilation mask.

[0005] The utility model provides a positive pressure ventilation mask adopting the following technical solutions:

[0006] A positive pressure ventilation mask comprising:

[0007] A mask body, wherein the outer wall of the mask body is fixedly connected to an air filter block, the outer wall of the air filter block is detachably connected to an air inlet pipe, and a vent hole is opened in the middle of the air filter block;

[0008] A storage chamber, wherein the inner walls on both sides of the storage chamber are rotatably connected to a rotating rod a, and a winding roller is detachably connected between the two rotating rods a;

[0009] Recovery chamber, the inner walls on both sides of the recovery chamber are rotatably connected with rotating rods b, and a recovery roller is detachably connected between the two rotating rods b, the outer wall of one of the rotating rods b is coaxially fixedly connected with a transmission gear, the inner wall of the recovery chamber is detachably connected with a motor, the output shaft of the motor is coaxially fixedly connected with a drive gear, the drive gear is meshed with the transmission gear, a filter cloth located on the bottom side of the vent is connected between the winding roller and the recovery roller, and a pressing mechanism is provided on the air filter block.

[0010] By adopting the above technical solution, the problem of the troublesome disassembly and replacement of the filter cloth of the mask is effectively solved. Specifically, when the filter cloth needs to be disassembled and replaced, the pressing mechanism releases the limit on the filter cloth, and the motor provides power to drive the driving gear to rotate. The driving gear engages with the transmission gear, driving the rotating rod b to rotate, thereby driving the recovery roller to rotate, and the used filter cloth is rolled up and recycled. At the same time, the new filter cloth enters the bottom side of the vent, and then the filter cloth is pressed by the pressing mechanism to prevent the filter cloth from being shifted during use. The entire process does not require manual replacement, which greatly improves the efficiency of removing and replacing the filter cloth. There is no need to remove the mask from the patient's face, ensuring the smoothness of the entire breathing process.

[0011] Optionally, the buckle mechanism includes an outer frame, an elastic locking rod and an elastic insertion rod, the outer frame is movably connected to the air filter block, the elastic locking rod is fixedly connected to the inner wall of the air filter block, the elastic insertion rod is integrally fixedly connected to the outer frame, and the elastic insertion rod is movably plugged into the elastic locking rod.

[0012] By adopting the above technical solution, the position of the outer frame can be easily controlled by plugging and locking the elastic locking rod and the elastic insertion rod. After the elastic locking rod and the elastic insertion rod are plugged in, the position of the outer frame is locked to ensure the stability of the outer frame.

[0013] Optionally, a strip groove for accommodating the filter cloth is provided on the outer frame, and when the outer frame is in a locked state, the filter cloth is bent 90° when passing through the strip groove.

[0014] By adopting the above technical solution, the filter cloth is folded by the strip grooves of the outer frame, thereby clamping the position of the filter cloth and preventing the filter cloth from shaking randomly by increasing friction.

[0015] Optionally, the receiving chamber and the recovery chamber are respectively arranged on both sides of the vent hole, and the receiving chamber and the recovery chamber are respectively provided with detachable buckle plates a and b.

[0016] By adopting the above technical solution, the position of the storage chamber and the recovery chamber is set, so that the movement direction of the filter cloth is suitable for replacement, and the gusset plates a and b are used to facilitate the observation and maintenance of the components in the storage chamber and the recovery chamber.

[0017] Optionally, the width of the filter cloth is greater than the covering width of the vent holes.

[0018] By adopting the above technical solution and setting the filter cloth, it is ensured that the filter cloth can completely cover the vent holes, thereby ensuring the quality of filtration.

[0019] Optionally, the outer wall of the mask body is provided with a plurality of symmetrically arranged wearing holes.

[0020] By adopting the above technical solution, medical staff can wear the mask on the patient's head with an elastic band through the wearing hole.

[0021] To sum up, the utility model includes at least one of the following beneficial technical effects: it effectively solves the problem that the filter cloth of the mask is troublesome to disassemble and replace. Specifically, the limit of the filter cloth is controlled by the pressing mechanism, and the power is provided by the motor to drive the driving gear to rotate. The driving gear is engaged with the transmission gear to drive the rotating rod b to rotate, thereby driving the recovery roller to rotate, and the used filter cloth is rolled up and recycled. At the same time, the new filter cloth enters the bottom side of the vent, and then the filter cloth is pressed by the pressing mechanism to prevent the filter cloth from being shifted during use. The entire process does not require manual replacement, which greatly improves the efficiency of removing and replacing the filter cloth. There is no need to remove the mask from the patient's face, ensuring the smoothness of the entire breathing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 2 is a schematic diagram of the three-dimensional structure of the positive pressure ventilation mask in this embodiment.

[0023] Figure 2 This is a schematic diagram of the partial three-dimensional structure of the positive pressure ventilation mask in this embodiment from another perspective.

[0024] Figure 3 yes Figure 2 Schematic diagram of the front view structure.

[0025] Figure 4 2 is a schematic cross-sectional view of the positive pressure ventilation mask in this embodiment.

[0026] Figure 5 2 is a schematic diagram of the side structure of the positive pressure ventilation mask in this embodiment.

[0027] Description of reference numerals:

[0028] 1. Mask body; 11. Air inlet pipe; 12. Wearing hole; 2. Air filter block; 21. Storage chamber; 211. Buckle plate a; 212. Rotating rod a; 213. Winding roller; 22. Recovery chamber; 221. Buckle plate b; 222. Rotating rod b; 223. Motor; 224. Drive gear; 225. Transmission gear; 226. Recovery roller; 23. Vent; 24. Filter cloth; 3. Buckle mechanism; 31. Outer frame; 32. Elastic locking rod; 33. Elastic insertion rod. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-Figure 5 The utility model is described in further detail.

[0030] The embodiment of the utility model discloses a positive pressure ventilation mask.

[0031] It should be noted that, in the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0032] Reference Figure 1-Figure 3 , a positive pressure ventilation mask comprising

[0033] The mask body 1 has an air filter block 2 fixedly connected to its outer wall, and an air inlet pipe 11 detachably connected to its outer wall. A vent 23 is provided in the middle of the air filter block 2 to facilitate the discharge of the patient's exhaled gas, thereby preventing excessive carbon dioxide concentration in the mask body 1.

[0034] The storage chamber 21 has rotating rods a212 rotatably connected to the inner walls of both sides of the storage chamber 21. A winding roller 213 is detachably connected between the two rotating rods a212. The detachable connection of the winding roller 213 facilitates replenishment of the filter cloth 24 after it is consumed, and the spare filter cloth 24 is stored in the storage chamber 21.

[0035] The recycling chamber 22 has a rotating rod b222 on both sides of the inner wall of the recycling chamber 22, and a recycling roller 226 is detachably connected between the two rotating rods b222. The detachable connection of the recycling roller 226 facilitates the recycling of the discarded filter cloth 24. The outer wall of one of the rotating rods b222 is coaxially fixedly connected to a transmission gear 225. The inner wall of the recycling chamber 22 is detachably connected to a motor 223. The output shaft of the motor 223 is coaxially fixedly connected to a driving gear 224. The driving gear 224 is meshed with the transmission gear 225. The filter cloth 24 located on the bottom side of the vent 23 is connected between the winding roller 213 and the recycling roller 226. A pressing mechanism 3 is provided on the air filter block 2 to limit the filter cloth 24.

[0036] Specifically, when in use, the filter cloth 24 is first inserted between the recovery roller 226 and the winding roller 213. When the filter cloth 24 needs to be replaced, the motor 223 is started to drive the driving gear 224 to rotate. The driving gear 224 engages with the transmission gear 225, driving the rotating rod b222 to rotate, thereby driving the recovery roller 226 to rotate, and the used filter cloth 24 is rewound and recycled. At the same time, during the recycling process, the filter cloth 24 pulls the winding roller 213 to rotate, and the new filter cloth 24 enters the bottom side of the vent 23, and then the filter cloth 24 is pressed by pressing the buckle mechanism 3 to complete the replacement of the filter cloth 24.

[0037] Reference Figure 3-Figure 5 Specifically, in the embodiment of the present invention, the pressing mechanism 3 includes an outer frame 31, an elastic locking rod 32 and an elastic insertion rod 33. The outer frame 31 is movably connected to the air filter block 2, the elastic locking rod 32 is fixedly connected to the inner wall of the air filter block 2, the elastic insertion rod 33 is integrally fixedly connected to the outer frame 31, the elastic insertion rod 33 and the elastic locking rod 32 are movably plugged in, and the elastic insertion rod 33 and the elastic locking rod 32 are provided with an inverted triangular block structure that engages with each other, so that the elastic insertion rod 33 and the elastic locking rod 32 are locked to each other. A strip groove for accommodating the filter cloth 24 is opened on the outer frame 31. When the outer frame 31 is in the locked state, the filter cloth 24 is bent 90° when passing through the strip groove.

[0038] When the filter bag 24 is in the unlock state, the filter bag 24 is in the unlock state, and the filter bag 24 is in the unlock state, and the filter bag 24 is in the unlock state. When the filter bag 24 is in the unlock state, the filter bag 24 is in the unlock state, and the filter bag 24 is in the unlock state. When the filter bag 24 is in the unlock state, the filter bag 24 is in the unlock state, and the filter bag 24 is in the unlock state. When the filter bag 24 is in the unlock state, the filter bag 24 is in the unlock state, and the filter bag 24 is in the unlock state.

[0039] Reference Figure 1 Specifically, in the embodiment of the present invention, the storage chamber 21 and the recovery chamber 22 are respectively arranged on both sides of the vent hole 23, and the storage chamber 21 and the recovery chamber 22 are respectively provided with detachable buckle plates a211 and buckle plates b221. When it is necessary to disassemble and assemble parts in the storage chamber 21 and the recovery chamber 22, it is necessary to open the buckle plates a211 and b221, which is convenient to use.

[0040] Reference Figure 4 Specifically, in the embodiment of the present invention, the width of the filter cloth 24 is greater than the covering width of the vent 23, and the vent 23 is completely covered by the filter cloth 24, ensuring the comprehensiveness of the filtration of the filter cloth 24.

[0041] Referring to the drawings, specifically, in the embodiment of the present invention, the outer wall of the mask body 1 is provided with a plurality of symmetrically arranged wearing holes 12, through which medical staff can conveniently fix the mask on the patient's head with straps or buckle straps for easy use.

[0042] The above are all preferred embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A positive pressure ventilation mask, characterized in that: include: A mask body (1), wherein an air filter block (2) is fixedly connected to the outer wall of the mask body (1), an air inlet pipe (11) is detachably connected to the outer wall of the air filter block (2), and an air vent (23) is provided in the middle of the air filter block (2); A storage chamber (21), wherein inner walls on both sides of the storage chamber (21) are rotatably connected to rotating rods a (212), and a winding roller (213) is detachably connected between the two rotating rods a (212); A recovery chamber (22), wherein the inner walls of both sides of the recovery chamber (22) are rotatably connected to rotating rods b (222), a recovery roller (226) is detachably connected between the two rotating rods b (222), the outer wall of one of the rotating rods b (222) is coaxially fixedly connected to a transmission gear (225), the inner wall of the recovery chamber (22) is detachably connected to a motor (223), the output shaft of the motor (223) is coaxially fixedly connected to a driving gear (224), the driving gear (224) is meshed with the transmission gear (225), a filter cloth (24) located at the bottom side of the vent (23) is connected between the winding roller (213) and the recovery roller (226), and a pressing mechanism (3) is provided on the air filter block (2).

2. A positive pressure ventilation mask according to claim 1, characterized in that: The buckle mechanism (3) comprises an outer frame (31), an elastic locking rod (32) and an elastic insertion rod (33); the outer frame (31) is movably connected to the air filter block (2); the elastic locking rod (32) is fixedly connected to the inner wall of the air filter block (2); the elastic insertion rod (33) is integrally fixedly connected to the outer frame (31); and the elastic insertion rod (33) is movably plugged into the elastic locking rod (32).

3. A positive pressure ventilation mask according to claim 2, characterized in that: The outer frame (31) is provided with a strip groove for accommodating the filter cloth (24) to pass through. When the outer frame (31) is in a locked state, the filter cloth (24) is bent 90 degrees when passing through the strip groove.

4. A positive pressure ventilation mask according to claim 1, characterized in that: The receiving chamber (21) and the recovery chamber (22) are respectively arranged on both sides of the vent hole (23); and the receiving chamber (21) and the recovery chamber (22) are respectively provided with a detachable buckle plate a (211) and a detachable buckle plate b (221).

5. A positive pressure ventilation mask according to claim 1, characterized in that: The width of the filter cloth (24) is greater than the covering width of the vent holes (23).

6. A positive pressure ventilation mask according to claim 1, characterized in that: The outer wall of the mask body (1) is provided with a plurality of symmetrically arranged wearing holes (12).

Images