A pressure buffer gas container and air bag pressure monitoring instrument

Abstract

The present invention relates to a pressure buffer gas container and an air bag pressure monitor. The pressure buffer gas container includes a hard air chamber shell and an elastic diaphragm; the air chamber shell has an opening, the elastic diaphragm cover is arranged at the opening, and the air chamber shell and the elastic diaphragm enclose an air container chamber; the air chamber shell is provided with a vent joint and / or a vent hole connected to the air container chamber, and the vent joint and / or the vent hole are used to connect a vent device. The hard air chamber shell itself can be installed and fixed in the air bag pressure monitor by means of screws or structural limiters, and the installation operation is simpler. The vent device can also be directly fixed on the hard air chamber shell, and connected to the air container chamber through the vent joint and / or the vent hole, without the use of pipes and quick connectors; at the same time, the air container chamber has a clear directionality when inflated, which helps to save the space reserved for the expansion of the air container chamber and is conducive to the miniaturization of the device.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a pressure buffer gas container and an airbag pressure monitor. Background Art

[0002] The establishment of an artificial airway (including endotracheal intubation and tracheotomy) is an important measure usually used in emergency treatment for critically ill patients with respiratory failure. An artificial airway is a gas passage established by inserting a catheter into the trachea through the upper respiratory tract or directly into the trachea, and an artificial airway balloon is used to fill the gap between the human airway and the trachea. After the gas is pushed, the balloon is inflated and the patient's airway opening is closed, so that when artificial gas is delivered, the gas can be completely delivered to the patient's lungs without being exposed, providing positive pressure breathing for the patient, and at the same time preventing aspiration pneumonia, preventing the patient's secretions from flowing down the organs to the lungs or vomitus from choking into the lungs, etc., causing the risk of suffocation.

[0003] The pressure of the artificial airway airbag needs to be controlled. The pressure cannot be too high to cause discomfort to the patient or even damage the patient's capillaries, nor can it be too low to cause leakage, failure of the artificial airway, and then cause aspiration, increasing the infection rate of pneumonia in the patient. To address this problem, an airbag pressure monitor is currently used to monitor the pressure of the artificial airway airbag. The airbag is connected to the artificial airway airbag, and the airbag pressure is maintained at a suitable value for a long time by deflation when the airbag pressure is too high and inflation when the airbag pressure is too low. In order to keep the pressure of the artificial airway airbag stable, a pressure buffer gas container is usually set inside the airbag pressure monitor itself. The pressure buffer is generally made of silicone, and is deformed by inflation to achieve the effect of pressure buffering, so as to provide air storage and buffer inflation pressure. However, the existing silicone airbags have no fixed shape and are spherical after expansion. It is necessary to reserve more space for the airbag expansion in the airbag pressure monitor, which is not conducive to the miniaturization of the airbag pressure monitor. In addition, the soft silicone airbags are usually not fixedly placed inside the airbag pressure monitor. The silicone airbags are easily affected by the internal components or ribs of the airbag pressure monitor (punctured or compressed, affecting the accuracy).

[0004] Moreover, the pressure buffer gas container in the existing airbag pressure monitor is generally connected to the air pump, pressure relief valve, pressure sensor and other devices through quick connectors and air pipes; at the same time, when installing the pressure buffer gas container into the airbag pressure monitor, it is necessary to consider the fixation of each device and the connection setting of the air path between it and the artificial airway bag, which makes the installation process more complicated. In addition, the excessive use of quick connectors in the connection between the devices will lead to reduced airtight reliability and increased risk of air leakage. Summary of the invention

[0005] Based on this, the purpose of the present invention is to solve at least one technical problem existing in the prior art and to provide a pressure buffer gas container which has the advantages of directional expansion and easy installation and fixation.

[0006] A pressure buffer gas container, used to be arranged in an airbag pressure monitor together with a ventilation device and communicated with the ventilation device, comprising a hard air chamber shell and an elastic diaphragm; the air chamber shell has an opening, the elastic diaphragm cover is arranged at the opening, and the air chamber shell and the elastic diaphragm enclose an air container air chamber;

[0007] The air chamber housing is provided with a ventilation joint and / or a ventilation hole connected to the air volume chamber, and the ventilation joint and / or the ventilation hole are used to connect a ventilation device;

[0008] The outer side wall of the air chamber shell forms a mounting position for the ventilation device, and at least a portion of the ventilation device is fixedly mounted on the mounting position. When the ventilation device is fixedly mounted to the mounting position, the ventilation device is docked with the ventilation joint and / or the ventilation hole.

[0009] The pressure buffer air capacity described in the embodiment of the present invention is installed and fixed in the airbag pressure monitor by means of screws or structural limits by providing a hard air chamber shell. Compared with the existing airbag air capacity made of pure silicone, the present design has the advantage of easier installation and operation. In addition, an opening is provided on the hard air chamber shell, and an elastic diaphragm is provided at the opening to enclose the air capacity air chamber. The air capacity air chamber has a clear directionality when inflated, which is convenient for reasonable spatial layout design of internal components or ribs of the airbag pressure monitor, helps to save space reserved for the expansion of the air capacity air chamber, and is conducive to realizing the overall miniaturization of the airbag pressure monitor, and can effectively prevent the airbag air chamber from being affected by internal components when it is expanded. In addition, by directly arranging ventilation joints and / or ventilation holes for connecting ventilation devices on the hard air chamber shell, compared with the design in the prior art that the pressure buffer gas container needs to be connected to valves, pressure sensors and other related devices through pipelines and quick connectors, the valves, pressure sensors and other related ventilation devices in the scheme described in the embodiment of the present invention can be directly fixedly installed outside the air chamber shell, without considering the problem of fixing the valves, pressure sensors and other related devices inside the airbag pressure monitor, and without considering the connection of the gas path, which helps to improve the installation efficiency and effectively avoids the problem of gas leakage at the connection point caused by using too many joints and air pipes.

[0010] Furthermore, the air chamber housing includes a first air chamber housing and a second air chamber housing that are detachably fixed, and the elastic diaphragm is limitedly fixed between the first air chamber housing and the second air chamber housing.

[0011] Furthermore, the first air chamber shell is configured as a frame-type structure having an avoidance opening, and the second air chamber shell is configured as a box-type structure having the opening, and the avoidance opening corresponds to the position of the opening; a portion of the elastic diaphragm is clamped between the first air chamber shell and the second air chamber shell, and another portion of the elastic diaphragm is deformed at the avoidance opening due to the gas pressure of the air-capacitating chamber.

[0012] Furthermore, a plurality of reinforcing ribs are provided on a surface of the first air chamber housing facing the second air chamber housing, and the interference limit of the elastic diaphragm is located between the reinforcing ribs and the second air chamber housing. The provision of the reinforcing ribs can, on the one hand, strengthen the structural strength of the frame structure of the first air chamber housing, and on the other hand, further squeeze the elastic diaphragm to enhance air tightness.

[0013] Furthermore, the edges of the elastic diaphragm extend toward the second air chamber shell to form a rim, and the rim is circumferentially covered on the outer surface of the second air chamber shell, which can assist in installation and improve the airtightness between the elastic diaphragm and the second gas shell.

[0014] Furthermore, the elastic diaphragm is bonded to the opening edge of the air chamber housing to fix the elastic diaphragm, which has a simple structure and is easy to produce and process.

[0015] Furthermore, the outer side wall of the air chamber shell forms a mounting position for the ventilation device, and when the ventilation device is fixedly installed at the mounting position, the ventilation device is butted against the ventilation joint and / or the through hole.

[0016] Further, the ventilation device includes a pressure relief valve;

[0017] The outer surface of the first air chamber housing is convexly provided with a plurality of fixing buckles; the outer wall of the second air chamber housing is convexly provided with a plurality of buckle positions, and the plurality of fixing buckles are movably buckled in the buckle positions;

[0018] The fixing buckle and the buckle position together form an air valve installation position, and the air valve installation position is used to install a pressure relief valve.

[0019] The cooperation between the fixing buckle and the buckle position is utilized to further improve the fixing stability, enable installation guidance, play an auxiliary positioning role before installation and fixation between the first air chamber shell and the second air chamber shell, and can define the air valve installation position of the pressure relief valve, thereby achieving positioning.

[0020] In addition, an embodiment of the present invention also provides an airbag pressure monitor, which includes an outer shell, a ventilation device arranged in the outer shell and the pressure buffer air container as described above; the hard air chamber shell is fixedly installed in the outer shell; the outer side wall of the air chamber shell constructs a mounting position for the ventilation device, at least part of the ventilation device is fixedly installed in the mounting position, and when the ventilation device is fixedly installed to the mounting position, the ventilation device is docked with the ventilation joint and / or the ventilation hole.

[0021] Furthermore, the ventilation device includes an air pump and a one-way valve;

[0022] The ventilation joint of the pressure buffer gas container also includes an air outlet joint and an air inlet joint, the air outlet joint is used to be connected to the object to be pressure monitored, and the two ends of the one-way valve are respectively connected to the air pump and the air inlet joint.

[0023] Further, the ventilation device includes a pressure sensor and a pressure relief valve;

[0024] The installation position includes a sensor fixing position and an air valve installation position, the air valve installation position is provided with a plurality of air valve vents, the sensor fixing position is provided with a plurality of sensor vents, the air valve vents and the sensor vents are both connected with the air volume chamber; the pressure sensor is fixed at the sensor fixing position, and the sensor detection end limit of the pressure sensor is located in the sensor vent; the pressure relief valve is fixed on the air valve installation position, and the valve port of the pressure relief valve is connected with the air valve vent.

[0025] Furthermore, the pressure buffer gas container also includes a plurality of first elastic sealing members and a plurality of second elastic sealing members;

[0026] The interference limit corresponding to the first elastic sealing member is located in the air valve vent hole, each of the first elastic sealing members is penetrated by a first sealing vent hole, the first sealing vent hole is connected to the air valve vent hole, and the interference limit corresponding to the valve port of the pressure relief valve is located in the first sealing vent hole;

[0027] The interference limit corresponding to the second elastic seal is located within the sensor vent hole, each of the second elastic seals is penetrated by a second sealing vent hole, the second sealing vent hole is connected to the sensor vent hole, and the interference limit corresponding to the sensor detection end of the pressure sensor is located within the second sealing vent hole.

[0028] The first elastic seal is used to block the gap between the valve port of the pressure relief valve and the first sealed vent hole, and the second elastic seal is used to block the gap between the sensor detection end of the pressure sensor and the second sealed vent hole. On the one hand, it plays a role in enhancing the air tightness. At the same time, by utilizing its own elastic characteristics, it can buffer external impacts when the airbag pressure monitor is shaken, collided or dropped, so as to avoid structural damage.

[0029] Furthermore, the air chamber shell of the pressure buffer air container is fixed in the outer shell by fixing screws, with good fixing stability and simple installation operation, which is convenient for improving assembly efficiency. The outer surface of the first air chamber shell and the inner surface of the outer shell form a gap to provide deformation space for the elastic diaphragm.

[0030] For better understanding and implementation, the present invention is described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is an overall schematic diagram of the pressure buffer gas container structure described in Example 1 of the present invention;

[0032] Figure 2 This is a schematic diagram of an explosion of the pressure buffer gas container structure described in Example 1 of the present invention;

[0033] Figure 3 This is a schematic diagram of the structure of the first air chamber shell of Example 1 of the present invention;

[0034] Figure 4 This is a schematic structural diagram of the elastic diaphragm and the second air chamber housing according to Embodiment 1 of the present invention;

[0035] Figure 5 This is a schematic diagram of the internal layout of the airbag pressure monitoring device described in Example 2 of the present invention;

[0036] Figure 6 This is a schematic diagram of the connection structure of the pressure sensor, the pressure relief valve and the pressure buffer gas container according to Example 2 of the present invention;

[0037] Figure 7 It is an exploded schematic diagram of the connection structure of the pressure sensor, the pressure relief valve and the pressure buffer gas container according to Example 2 of the present invention;

[0038] Figure 8 This is a schematic longitudinal section diagram of the first elastic sealing member structure according to Embodiment 2 of the present invention;

[0039] Fig. 9 This is a schematic side view of the structure of the second elastic sealing member according to Embodiment 2 of the present invention;

[0040] Fig.10 for Fig. 9 AA section schematic diagram is shown. DETAILED DESCRIPTION

[0041] 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" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0042] Example 1

[0043] Please also refer to Figure 1-2 , Figure 1 This is an overall schematic diagram of the pressure buffer gas container structure described in Example 1 of the present invention. Figure 2 The exploded schematic diagram of the pressure buffer gas container structure of Example 1 of the present invention is shown in the figure. As shown in the figure, Example 1 of the present invention provides a pressure buffer gas container 1, which includes a hard air chamber shell and an elastic diaphragm 10; the air chamber shell has an opening, and the elastic diaphragm 10 is covered at the opening, and the air chamber shell and the elastic diaphragm enclose a gas container air chamber;

[0044] The air chamber housing is provided with a ventilation joint and / or a ventilation hole which is in communication with the air volume chamber, and the ventilation joint and / or the ventilation hole are used to connect a ventilation device.

[0045] The pressure buffer air capacity described in Example 1 of the present invention is provided with a hard air chamber shell, so that the air chamber shell itself can be installed and fixed in the airbag pressure monitor by means of screws or structural limits. Compared with the existing airbag air capacity made of pure silicone, the present design has the advantage of easier installation and operation; an opening is provided on the hard air chamber shell, and an elastic diaphragm is covered at the opening to enclose an air capacity air chamber. The air capacity air chamber has a clear directionality when inflated, which is convenient for reasonable spatial layout design of internal components or rib positions of the airbag pressure monitor, helps to save space reserved for the expansion of the air capacity air chamber, and is conducive to realizing the overall miniaturization of the airbag pressure monitor, and can effectively prevent the airbag air chamber from being affected by the internal when it is expanded. In addition, by directly arranging ventilation joints and / or ventilation holes for connecting ventilation devices on the hard air chamber shell, compared with the design in the prior art that the pressure buffer gas container needs to be connected to valves, pressure sensors and other related devices through pipelines and quick connectors, in the scheme described in the embodiment of the present invention, valves, pressure sensors and other related ventilation devices can be directly fixedly installed outside the air chamber shell, without considering the fixed installation of valves, pressure sensors and other related devices inside the airbag pressure monitor, and without considering the connection of the gas path, which helps to improve the installation efficiency and effectively avoids the problem of gas leakage at the connection point caused by using too many joints and air pipes.

[0046] Specifically, the fixing method between the elastic diaphragm 10 and the air chamber shell can be selected according to the actual situation. For example, the elastic diaphragm 10 can be directly fixed by bonding or secondary injection molding on the surface of the air chamber shell to cover the opening of the air chamber shell. This fixing method does not require structural coordination, has a simple structure, and is easy to produce and process. In addition, as an optional embodiment, as in the present embodiment, the air chamber shell includes a first air chamber shell 20 and a second air chamber shell 30 that can be detachably fixed, and the elastic diaphragm 10 is limitedly fixed between the first air chamber shell 20 and the second air chamber shell 30, so that the elastic diaphragm 10 and the second air chamber shell 30 are enclosed to form an independent air volume chamber. Alternatively, the air chamber shell includes a first air chamber shell and a second air chamber shell that can be detachably fixed, and the elastic diaphragm is fixed by bonding or secondary injection molding on the first air chamber shell, and then the first air chamber shell and the second air chamber shell are sealed and fixed.

[0047] In this embodiment, please also refer to Figure 2-4 , Figure 3 This is a schematic diagram of the structure of the first air chamber shell in Example 1 of the present invention, Figure 4This is a schematic diagram of the elastic diaphragm and the second air chamber shell structure of Example 1 of the present invention. As shown in the figure, the first air chamber shell 20 is constructed as a frame-type structure with a avoidance opening, and the second air chamber shell 30 is constructed as a box-type structure with the opening, and the avoidance opening corresponds to the position of the opening. Specifically, in the present embodiment, the second air chamber shell 30 is a box-type structure with an opening on the top, and in other embodiments, it may also have an opening on the side or bottom, which can actually be determined according to the shape structure of the airbag pressure monitor product for specific application.

[0048] A portion of the elastic diaphragm 10 is clamped between the first air chamber shell 20 and the second air chamber shell 30, and another portion of the elastic diaphragm 10 is deformed at the escape port due to the gas pressure of the air chamber. Specifically, the edges of the elastic diaphragm 10 are clamped between the first air chamber shell 20 and the second air chamber shell 30, and the middle portion of the elastic diaphragm 10 is deformed at the escape port. The elastic diaphragm 10 can be made of silicone or other materials that can be elastically deformed under force. Furthermore, a protrusion 11 is formed in the middle portion of the elastic diaphragm 10 toward the direction of the first air chamber shell 20, and the protrusion height of the protrusion 11 is not greater than the thickness of the frame structure of the first air chamber shell 20. The first air chamber shell 20 can protect the elastic diaphragm 10, and after the pressure buffer air container 1 is installed in the airbag pressure monitor product, the elastic diaphragm 10 can be prevented from being punctured by other high-hardness or sharp components in the product.

[0049] As an optional implementation, in this embodiment, the first air chamber housing 20 and the second air chamber housing 30 are detachably fixed by fixing screws (not shown). Specifically, the air chamber housing also includes a plurality of fixing screws; a plurality of first air chamber screw mounting posts 21 are protrudingly provided on the outer surface of the first air chamber housing 20, and each first air chamber screw mounting post 21 is penetrated with a first screw hole 211; a plurality of second air chamber screw mounting posts 35 are protrudingly provided on the outer surface of the second air chamber housing 30 at positions corresponding to the first air chamber screw mounting posts 21, and each second air chamber screw mounting post 35 is penetrated with a second screw hole 351; the fixing screws are correspondingly penetrated in the first screw hole 211 and the second screw hole 351. Further preferably, the number of the fixing screws is at least 4, and correspondingly, the number of the first air chamber screw mounting columns 21 and the second air chamber screw mounting columns 35 is at least 4, so as to ensure the stability of the fixation between the first air chamber shell 20 and the second air chamber shell 30. In this embodiment, the number of the fixing screws is 6, and the corresponding number of first air chamber screw mounting columns 21 are evenly arranged along the circumference of the frame structure of the first air chamber shell 20, so as to ensure that a uniform clamping force is applied to the elastic diaphragm 10.

[0050] By utilizing the cooperation of fixing screws and screw holes, the first air chamber shell 20 and the second air chamber shell 30 can be tightly fixed, and the elastic diaphragm 10 can be tightly pressed to further improve the air tightness between it and the second air chamber shell 30, thereby avoiding the problem of gas leakage in the air-containing air chamber. In other embodiments, the first air chamber shell 20 and the second air chamber shell 30 can also be detachably fixed by other means.

[0051] Further preferably, the edges of the elastic diaphragm 10 can also extend toward the second air chamber shell 30 to form a edging 12, and the edging 12 is circumferentially covered on the outer surface of the second air chamber shell 30, which can assist in installation and improve the airtightness between the elastic diaphragm 10 and the second gas shell.

[0052] As an optional embodiment, the second air chamber shell 30 includes a plurality of side walls 32, and the side walls 32 form a mounting position for the ventilation device. When the ventilation device is fixedly installed at the mounting position, the ventilation device is connected to the ventilation joint and / or the through hole.

[0053] Further, please also refer to Figure 1 and Figure 3 As shown in the figure, a buckle fixing piece 22 is protruded on the outer surface of one side wall 32 of the first air chamber housing 20, and a plurality of fixing buckles 23 are protruded along the edge of the buckle fixing piece 22 in the direction toward the second air chamber housing 30; a plurality of buckle positions 361 are protruded on the outer wall of the second air chamber housing 30, and a plurality of fixing buckles 23 are movably buckled in the buckle positions 361. Specifically, a valve support 36 is protruded on the outer wall of the second air chamber housing 30, and the buckle position 361 is a through hole through which the valve support 36 is penetrated. Preferably, as Figure 1 As shown in the figure, the clip fixing member 22 and the air valve support member 36 are respectively located on the upper and lower sides of the air valve installation position 33, and when a plurality of fixing clips 23 are buckled in the buckle position 361, they are respectively located on the left and right sides of the air valve installation position 33, so that the air valve support member 36 and the fixing clips 23 are enclosed to form the air valve installation position 33, and the air valve installation position 33 is used to install the pressure relief valve.

[0054] The cooperation between the fixing buckle 23 and the buckle position 361 is used to define the installation position of the exhaust valve, and at the same time, it can improve the stability of the fixation of the first air chamber shell 20 and the second air chamber shell 30, and can provide installation guidance. During installation, the fixing buckle 23 is first buckled into the buckle position 361 to achieve auxiliary positioning of the first air chamber shell 20, so as to facilitate further installation and fixation using the fixing screws.

[0055] Example 2

[0056] The embodiment of the present invention provides an airbag pressure monitoring instrument, which comprises a housing 2, a ventilator disposed in the housing 2, and the pressure buffer gas container 1 as described in Embodiment 1. The hard air chamber housing is fixedly installed in the housing; the outer side wall of the air chamber housing forms a mounting position for the ventilator, at least part of the ventilator is fixedly installed in the mounting position, and when the ventilator is fixedly installed in the mounting position, the ventilator is docked with the ventilator joint and / or through hole.

[0057] Specifically, the ventilation device includes an air pump, a one-way valve 4, a pressure sensor 5 and a pressure relief valve 6.

[0058] Please refer to Figure 5-7 , Figure 5 This is a schematic diagram of the internal layout of the airbag pressure monitoring device according to Embodiment 2 of the present invention. Figure 6 Schematic diagram of the connection structure of the pressure sensor, the pressure relief valve and the pressure buffer gas container according to Example 2 of the present invention, Figure 7 The exploded schematic diagram of the connection structure of the pressure sensor, the pressure relief valve and the pressure buffer gas container described in Example 2 of the present invention, as shown in the figure, the installation position includes a valve installation position 33 and a sensor fixing position 34, a plurality of valve vents 331 are provided at the valve installation position 33, and a plurality of sensor vents 342 are provided at the sensor fixing position, and the valve vents 331 and the sensor vents 342 are both connected to the gas chamber of the gas container. The pressure sensor 5 is fixed to the sensor fixing position, and the sensor detection end 52 of the pressure sensor 5 is limited in the sensor vent 342; the pressure relief valve 6 is fixed on the valve installation position 33, specifically fixed on the valve support 36 of the pressure buffer gas container 1, and is fixed and limited in the accommodation space enclosed by the buckle fixing member 22, the fixing buckle 23 and the valve support 36, and the valve port 61 of the pressure relief valve 6 is connected to the valve vent 331.

[0059] The ventilation connector 31 of the pressure buffer gas container 1 includes an outlet connector 311 and an inlet connector 312. The outlet connector 311 is connected to the pressure monitoring object, i.e., the artificial airway bag, through a connecting pipe. The two ends of the one-way valve 4 are respectively connected to the air pump 3 and the inlet connector 312. The pressure sensor 5 is fixed to the sensor fixing position 34 of the pressure buffer gas container 1, and the pressure sensor 5 is connected to the sensor vent 341; the pressure relief valve 6 is connected to the air valve vent 331.

[0060] The airbag pressure monitor described in Example 2 of the present invention is connected to an artificial airway airbag to monitor the pressure of the artificial airway airbag. Since the outlet connector 311 of the pressure buffer air container 1 is connected to the artificial airway airbag through a pipeline, the two have the same gas pressure inside. The airbag pressure monitor is provided with a pressure sensor 5 to detect the gas pressure in the air chamber of the pressure buffer air container 1, that is, the gas pressure in the artificial airway airbag. When the measured gas pressure is too low, the airbag pressure monitor uses the built-in air pump 3 to introduce air through the one-way valve 4, and further passes through the outlet connector 311 to and the pipeline is passed into the artificial airway bag to achieve the purpose of increasing the airbag pressure; when the measured gas pressure is too high, the airbag pressure monitor uses the pressure relief valve 6 to discharge the gas in the air capacity chamber to achieve the purpose of reducing the airbag pressure; through the above two processes, the gas pressure in the air capacity chamber and the artificial airway bag can be maintained at a suitable value for a long time to achieve the purpose of pressure monitoring. At the same time, when the pressure is too high or too low, the elastic diaphragm 10 can be deformed to increase or decrease the volume of the air capacity chamber to buffer the inflation pressure and avoid a sudden increase or decrease in the pressure in the artificial airway bag.

[0061] As an optional implementation, in this embodiment, the pressure sensor 5 is fixed to the sensor fixing position 34 by a fixing screw (not shown in the figure). Specifically, the pressure sensor 5 includes a circuit board 51 and a plurality of sensor detection ends 52 electrically connected to the circuit board 51. A fixing hole 511 is opened through the circuit board 51. A screw mounting column 37 is protruded at the position corresponding to the fixing screw on the outer surface of the side wall 32 of the pressure buffer gas container 1. The fixing screw passes through the fixing hole 511 and is threadedly fixed on the screw mounting column 37; a plurality of sensor detection ends 52 are correspondingly arranged in the sensor vent hole 341.

[0062] Further preferably, the pressure buffer gas container 1 further includes a plurality of first elastic seals 40 and a plurality of second elastic seals 70 .

[0063] The first elastic seal 40 corresponds to an interference limit located within the air valve vent 331 , each first elastic seal 40 is penetrated by a first sealing vent 41 , the first sealing vent 41 is connected to the air valve vent 331 , and the valve port 61 of the pressure relief valve 6 corresponds to an interference limit located within the first sealing vent 41 .

[0064] Preferably, please refer to Figure 8 , Figure 82 is a longitudinal sectional diagram of the first elastic seal structure of Example 2 of the present invention. The first elastic seal 40 includes a first elastic limiting portion 42 and a first elastic sealing portion 43 which are fixedly connected in sequence along the central axis direction of the first sealing vent hole 41. The outer diameter of the first elastic limiting portion 42 is larger than the inner diameter of the air valve vent hole 331. The interference limit of the first elastic sealing portion 43 is located in the air valve vent hole 331. The setting of the first elastic limiting portion 42 limits the penetration position of the first elastic seal 40 in the air valve vent hole 331 to avoid the first The elastic seal 40 accidentally enters the air-containing air chamber, resulting in seal failure. Furthermore, an annular protrusion 431 may be circumferentially provided on the outer surface of the first elastic seal portion 43 to enhance the air tightness of its interference fit with the air valve vent hole 331; an outer chamfer 432 is provided at the end of the first elastic seal portion 43 to facilitate its insertion into the air valve vent hole 331; an inner chamfer 433 is provided at the end of the first sealing vent hole 41 near the first elastic limiting portion 42 to facilitate the valve port 61 of the pressure relief valve 6 to penetrate into the first sealing vent hole 41.

[0065] The corresponding interference limit of the second elastic seal 70 is located in the sensor vent hole 341 , each second elastic seal 70 is penetrated by a second sealing vent hole 71 , the second sealing vent hole 71 is connected to the sensor vent hole 341 , and the corresponding interference limit of the sensor detection end 52 is located in the second sealing vent hole 71 .

[0066] The existing pressure sensor generally has multiple sensor detection ends. The structure of the second elastic seal 70 can be similar to that of the first elastic seal 40, that is, one second elastic seal 70 is used for each sensor detection end 52. Alternatively, to further improve the ease of installation, please refer to Figure 9-10 , Fig. 9 This is a schematic side view of the structure of the second elastic seal according to Embodiment 2 of the present invention. Fig.10 for Fig. 9 As shown in the AA section diagram, as shown in the figure, in the present embodiment, the second elastic seal 70 includes a second elastic limiting portion 72 and a plurality of second elastic sealing portions 73, the second elastic limiting portion 72 is penetrated by a plurality of limiting portion through holes, the second elastic seal 70 is protruded and fixed to a side surface of the second elastic limiting portion 72, the second elastic seal 70 is located in the sensor vent 341 corresponding to the interference limit, each second elastic seal 70 is penetrated by a sealing portion through hole, and is correspondingly connected to the limiting portion through hole to form a second sealing vent 71, the number and position of the limiting portion through holes need to be adjusted and designed according to the number and position distribution of the sensor detection end 52, and the shape of the second elastic limiting portion 72 can be adjusted and designed according to actual conditions.

[0067] The first elastic seal 40 and the second elastic seal 70 can be made of silicone or other elastic materials. The first elastic seal 40 is used to seal the gap between the valve port 61 of the pressure relief valve 6 and the first sealing vent 41, and the second elastic seal 70 is used to seal the gap between the sensor detection end 52 and the second sealing vent 71. On the one hand, it plays a role in enhancing the air tightness. At the same time, by utilizing its own elastic characteristics, it can buffer external impacts when the airbag pressure monitor is shaken, collided or dropped, so as to avoid structural damage.

[0068] Furthermore, the airbag pressure monitor described in the embodiment of the present invention also includes a battery 7, which is electrically connected to the air pump 3, the pressure sensor 5 and the pressure relief valve 6 respectively. By setting an internal power supply, the need to introduce an external power supply using wires can be avoided.

[0069] Furthermore, the number of the pressure relief valves 6 is at least 2, the number of the air valve vents 331 is at least 2, and the pressure relief valves 6 are fixed side by side on the air valve support 36 of the pressure buffer air container 1, and are correspondingly connected to the air valve vents 331. The provision of multiple pressure relief valves can avoid the problem that the airbag pressure monitor cannot work properly when a single pressure relief valve fails, thereby improving the reliability of the device.

[0070] In the present embodiment, the air chamber shell of the pressure buffer air container 1 can be made of plastic. Compared with the traditional air container airbag made of pure silicone material, the pressure buffer air container 1 of the present invention can be fixed in the outer shell 2 by fixing screws, with good fixing stability. At the same time, the installation operation is simple, which is convenient for improving assembly efficiency, and effectively solves the problem of inconvenient fixing of the pressure buffer air container 1 airbag in the pressure monitor in the prior art. In other embodiments, the air chamber shell of the pressure buffer air container 1 can also be fixed by other means, such as by snap-fitting or interlocking fixation, etc.; in addition, the outer surface of the first air chamber shell 20 forms a gap with the inner surface of the outer shell 2 to provide a deformation space for the elastic diaphragm 10.

[0071] The above-mentioned embodiments only express several implementation methods of the present invention, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the invention patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A pressure buffer gas container, used to be arranged together with a ventilation device in an airbag pressure monitor and communicated with the ventilation device, characterized in that: It comprises a hard air chamber shell and an elastic diaphragm; the air chamber shell has an opening, the elastic diaphragm cover is arranged at the opening, and the air chamber shell and the elastic diaphragm enclose an air volume air chamber; The air chamber housing is provided with a ventilation joint and / or a ventilation hole connected to the air volume chamber, and the ventilation joint and / or the ventilation hole are used to connect a ventilation device; The outer side wall of the air chamber shell forms a mounting position for the ventilation device, and at least a portion of the ventilation device is fixedly mounted on the mounting position. When the ventilation device is fixedly mounted to the mounting position, the ventilation device is docked with the ventilation joint and / or the ventilation hole.

2. The pressure buffer gas container according to claim 1, characterized in that: The air chamber housing comprises a first air chamber housing and a second air chamber housing that are detachably fixed, and the elastic diaphragm is limitedly fixed between the first air chamber housing and the second air chamber housing.

3. The pressure buffer gas container according to claim 2, characterized in that: The first air chamber shell is configured as a frame-type structure having an avoidance opening, and the second air chamber shell is configured as a box-type structure having the opening, and the avoidance opening corresponds to the position of the opening; a portion of the elastic diaphragm is clamped between the first air chamber shell and the second air chamber shell, and another portion of the elastic diaphragm is deformed at the avoidance opening due to the gas pressure of the air-capacitating chamber.

4. The pressure buffer gas container according to claim 3, characterized in that: A plurality of reinforcing ribs are protruded from a surface of one side of the first air chamber housing facing the second air chamber housing, and the interference limit of the elastic diaphragm is located between the reinforcing ribs and the second air chamber housing.

5. The pressure buffer gas container according to any one of claims 2 to 4, characterized in that: The edges of the elastic membrane are extended toward the second air chamber shell to form a rim, and the rim is circumferentially covered on the outer surface of the second air chamber shell.

6. The pressure buffer gas container according to claim 1, characterized in that: The elastic diaphragm is bonded to the opening edge of the air chamber housing.

7. The pressure buffer gas container according to claim 2, characterized in that: The ventilation device includes a pressure relief valve; The outer surface of the first air chamber housing is convexly provided with a plurality of fixing buckles; the outer wall of the second air chamber housing is convexly provided with a plurality of buckle positions, and the plurality of fixing buckles are movably buckled in the buckle positions; The fixing buckle and the buckle position together form an air valve installation position, and the air valve installation position is used to install a pressure relief valve.

8. An airbag pressure monitor, characterized in that: It comprises an outer shell, a ventilation device arranged in the outer shell and a pressure buffer air container as described in any one of claims 1 to 7; the hard air chamber shell is fixedly installed in the outer shell; the outer side wall of the air chamber shell constructs a mounting position for the ventilation device, at least a part of the ventilation device is fixedly installed in the mounting position, and when the ventilation device is fixedly installed to the mounting position, the ventilation device is docked with the ventilation joint and / or the ventilation hole.

9. The airbag pressure monitor according to claim 8, characterized in that: The ventilation device includes an air pump and a one-way valve; The ventilation joint of the pressure buffer gas container also includes an air outlet joint and an air inlet joint, the air outlet joint is used to be connected to the object to be pressure monitored, and the two ends of the one-way valve are respectively connected to the air pump and the air inlet joint.

10. The airbag pressure monitor according to claim 8, characterized in that: The ventilation device includes a pressure sensor and a pressure relief valve; The installation position includes a sensor fixing position and an air valve installation position, the air valve installation position is provided with a plurality of air valve vents, the sensor fixing position is provided with a plurality of sensor vents, the air valve vents and the sensor vents are both connected with the air volume chamber; the pressure sensor is fixed at the sensor fixing position, and the sensor detection end limit of the pressure sensor is located in the sensor vent; the pressure relief valve is fixed on the air valve installation position, and the valve port of the pressure relief valve is connected with the air valve vent.

11. The airbag pressure monitor according to claim 10, characterized in that: The pressure buffer gas container also includes a plurality of first elastic sealing members and a plurality of second elastic sealing members; The interference limit corresponding to the first elastic sealing member is located in the air valve vent hole, each of the first elastic sealing members is penetrated by a first sealing vent hole, the first sealing vent hole is connected to the air valve vent hole, and the interference limit corresponding to the valve port of the pressure relief valve is located in the first sealing vent hole; The interference limit corresponding to the second elastic seal is located within the sensor vent hole, each of the second elastic seals is penetrated by a second sealing vent hole, the second sealing vent hole is connected to the sensor vent hole, and the interference limit corresponding to the sensor detection end of the pressure sensor is located within the second sealing vent hole.

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