CN114534049A - Pressure buffering air volume and gasbag pressure monitoring appearance - Google Patents

Abstract

The invention relates to a pressure buffer air volume and air bag pressure monitor. The pressure buffering air volume comprises a hard air chamber shell and an elastic diaphragm; the air chamber shell is provided with an opening, the elastic diaphragm is covered at the opening, and the air chamber shell and the elastic diaphragm are enclosed to form an air-containing air chamber; the air chamber shell is provided with a ventilation joint and/or a ventilation hole which are communicated with the air-containing air chamber, and the ventilation joint and/or the ventilation hole are/is used for being connected with a ventilation device. The hard air chamber shell can be installed and fixed in the air bag pressure monitor in a screw or structural limiting mode and the like, the installation and operation are simpler and more convenient, a ventilation device can be directly fixed on the hard air chamber shell, and the hard air chamber shell is communicated with the air-accommodating air chamber through a ventilation joint and/or a ventilation hole without using a pipeline or a quick joint; meanwhile, the air-containing air chamber has definite directivity during inflation and expansion, which is beneficial to saving the space reserved for the inflation of the air-containing air chamber and realizing the miniaturization of the device.

Description

Pressure buffering air volume and air bag pressure monitor

Technical Field

The invention relates to the technical field of medical instruments, in particular to a pressure buffering air volume and air bag pressure monitoring instrument.

Background

The establishment of an artificial airway (including intubation of the trachea, tracheotomy) is an important measure that is commonly utilized in rescue therapy for critically ill patients facing respiratory failure. The artificial airway is a gas channel established by placing a catheter into a trachea through an upper respiratory tract or directly into the trachea, and an artificial airway air bag is used for filling a gap between the human airway and the trachea, and the air bag is expanded to seal the airway opening of a patient after being pushed, so that the gas can be completely sent into the lung of the patient without being exposed when artificial gas delivery is carried out, positive pressure type respiration is provided for the patient, meanwhile, aspiration pneumonia can be prevented, and the phenomenon that secretion generated by the patient is choked into the lung along with the downstream of organs to the lung or vomit and the like to cause suffocation danger is avoided.

The pressure of the artificial airway air bag needs to be controlled, the pressure of the artificial airway air bag cannot be too high to cause discomfort of a patient and even cause damage to capillary vessels of the patient, and the pressure of the artificial airway air bag cannot be too low to cause air leakage and artificial airway failure and further cause aspiration, so that the infection rate of pneumonia of the patient is increased. To this problem, the current pressure of using gasbag pressure monitor to artifical air flue gasbag is monitored, it through with artifical air flue gasbag is linked together, through disappointing when gasbag pressure is too big, aerifys when gasbag pressure undersize for gasbag pressure keeps at a suitable numerical value for a long time. And in order to keep artifical air flue gasbag pressure stable, gasbag pressure monitor self inside can set up pressure buffering air capacity usually, and it is generally formed by the silica gel preparation, and it is through aerifing the effect that warp in order to reach pressure buffering to provide the gas storage and the effect of buffering inflation pressure. However, the existing silica gel air bag has no fixed shape, is spherical after being expanded, needs to reserve more air bag expansion spaces in the air bag pressure monitor, and is not beneficial to the miniaturization of the air bag pressure monitor; and soft silica gel gasbag usually does not do and places inside gasbag pressure monitor fixedly, and the silica gel gasbag easily receives the influence (puncture or oppression) of gasbag pressure monitor inside parts or muscle position (influence the precision).

In addition, a pressure buffer air volume in the existing air bag pressure monitor is generally connected with an air pump, a pressure release valve, a pressure sensor and other devices through a quick connector and an air pipe; simultaneously when installing this pressure buffering air-capacitor to gasbag pressure monitor complete machine in, need consider the fixed of each device and with the setting of being connected of gas circuit between the artifical air flue gasbag, lead to the installation comparatively complicated, in addition, the quick-operation joint of excessive use can lead to airtight reliability to reduce with being connected between the device, increased the gas leakage risk.

Disclosure of Invention

Based on this, the invention aims to solve at least one technical problem in the prior art and provide a pressure buffering air volume which has the advantages of directional expansion and convenient installation and fixation.

A pressure buffer air volume comprises a hard air chamber shell and an elastic diaphragm; the air chamber shell is provided with an opening, the elastic diaphragm is covered at the opening, and the air chamber shell and the elastic diaphragm are enclosed to form an air-capacity air chamber;

the air chamber shell is provided with a ventilation joint and/or a ventilation hole which are communicated with the air-containing air chamber, and the ventilation joint and/or the ventilation hole are/is used for being connected with a ventilation device.

According to the pressure buffering air volume, the hard air chamber shell is arranged, so that the pressure buffering air volume can be installed and fixed in the air bag pressure monitor in a screw or structural limiting mode, and compared with the existing air bag air volume made of pure silica gel, the pressure buffering air volume has the advantage of being simple and convenient in installation and operation; in addition, the opening is formed in the hard air chamber shell, the elastic membrane is covered at the opening to form the air-containing air chamber in a surrounding mode, the air-containing air chamber has definite directionality during inflation and expansion, reasonable space layout design is convenient to be carried out on internal components or rib positions of the air bag pressure monitor, the space reserved for the expansion of the air-containing air chamber is saved, the overall miniaturization of the air bag pressure monitor is facilitated, meanwhile, the air bag air chamber can be effectively prevented from being pressed by the internal components or the rib positions and even being punctured during expansion, and the reliability of equipment is improved; in addition, through directly arranging the ventilation joint and/or the ventilation hole for connecting the ventilation device on the hard air chamber shell, compared with the design that the pressure buffer air volume in the prior art needs to be connected with the relevant devices such as a valve, a pressure sensor and the like through a pipeline and a quick joint, the ventilation device such as the valve, the pressure sensor and the like can be directly and fixedly arranged outside the air chamber shell in the scheme of the embodiment of the invention, the problem of fixedly arranging the relevant devices such as the valve, the pressure sensor and the like in the air bag pressure monitor is not needed to be additionally considered, the connection of the air path is also not needed to be considered, the installation efficiency is improved, and the problem of gas leakage at the connection part caused by excessive use of the joint and the air pipe is effectively avoided.

Further, the air chamber shell comprises a first air chamber shell and a second air chamber shell which are detachably fixed, and the elastic diaphragm is limited and fixed between the first air chamber shell and the second air chamber shell.

Further, the first plenum housing is configured as a frame-type structure having an escape opening, and the second plenum housing is configured as a box-type structure having the opening, the escape opening corresponding to the opening; one part of the elastic diaphragm is clamped between the first air chamber shell and the second air chamber shell, and the other part of the elastic diaphragm is limited by the deformation of the gas pressure of the gas containing air chamber at the avoiding opening.

Furthermore, a plurality of reinforcing ribs are convexly arranged on the surface of one side, facing the second air chamber shell, of the first air chamber shell, and the elastic diaphragm is limited between the reinforcing ribs and the second air chamber shell in an interference manner. The arrangement of the reinforcing ribs can strengthen the structural strength of the frame-shaped structure of the first air chamber shell, and the elastic membrane is further in extrusion contact with the frame-shaped structure of the first air chamber shell, so that the air tightness is enhanced.

Furthermore, the peripheral edge of the elastic membrane extends towards the second air chamber shell to form a wrapping edge, and the wrapping edge is arranged on the outer side surface of the second air chamber shell along the circumferential cover, so that the effects of assisting in installation and improving the air tightness between the elastic membrane and the second air chamber shell can be achieved.

Furthermore, the elastic diaphragm is bonded with the edge of the opening of the air chamber shell, so that the elastic diaphragm is fixed, the structure is simple, and the production, processing and operation are simple and convenient.

Further, the outer side wall of the air chamber shell forms a mounting position of the ventilation device, and when the ventilation device is fixedly mounted to the mounting position, the ventilation device is in butt joint with the ventilation joint and/or the through hole.

Further, the venting means comprises a pressure relief valve;

a plurality of fixing buckles are convexly arranged on the outer side surface of the first air chamber shell; a plurality of buckling positions are arranged on the outer side wall of the second air chamber shell in a protruding mode, and a plurality of fixed buckles are movably buckled on the buckling positions;

the fixed buckle and the buckling position are enclosed to form an air valve installation position, and the air valve installation position is used for installing a pressure release valve.

Utilize fixed buckle with the cooperation of detaining the position further improves fixed stability, can install the direction first air chamber casing and play the effect of assistance-localization real-time before the installation between the second air chamber casing is fixed to can inject the pneumatic valve installation position of relief valve, can realize the location.

In addition, the embodiment of the invention also provides an air bag pressure monitor, which comprises a shell, a ventilation device arranged in the shell and the pressure buffering air volume; the hard air chamber shell is fixedly arranged in the shell; the outer side wall of the air chamber shell forms a mounting position of the ventilation device, at least part of the ventilation device is fixedly mounted at the mounting position, and when the ventilation device is fixedly mounted at the mounting position, the ventilation device is butted with the ventilation joint and/or the through hole.

Further, the ventilation device comprises an air pump and a one-way valve;

the air connector of the pressure buffering air capacitor further comprises an air outlet connector and an air inlet connector, the air outlet connector is used for being communicated with an object to be pressure monitored, and two ends of the one-way valve are respectively communicated with the air pump and the air inlet connector.

Further, the venting means comprises a pressure sensor and a pressure relief valve;

the mounting position comprises a sensor fixing position and a gas valve mounting position, a plurality of gas valve vent holes are formed in the gas valve mounting position, a plurality of sensor vent holes are formed in the sensor fixing position, and the gas valve vent holes and the sensor vent holes are communicated with the gas-containing air chamber; the pressure sensor is fixed at the sensor fixing position, and the sensor detection end of the pressure sensor is limited in the sensor vent hole; the pressure release valve is fixed on the air valve installation position, and a valve port of the pressure release valve is communicated with the air valve vent hole.

Furthermore, the pressure buffer air volume also comprises a plurality of first elastic sealing elements and a plurality of second elastic sealing elements;

the first elastic sealing elements are correspondingly limited in the air valve vent holes in an interference manner, each first elastic sealing element is provided with a first sealing vent hole in a penetrating manner, the first sealing vent holes are communicated with the air valve vent holes, and a valve port of the pressure release valve is correspondingly limited in the first sealing vent holes in an interference manner;

the second elastic sealing element is correspondingly limited in the sensor vent hole in an interference manner, each second elastic sealing element penetrates through the sensor vent hole to be provided with a second sealing vent hole, the second sealing vent hole is communicated with the sensor vent hole, and the sensor detection end of the pressure sensor is correspondingly limited in the second sealing vent hole in an interference manner.

The first elastic sealing element is arranged for blocking a gap between a valve port of the pressure release valve and the first sealing vent hole, the second elastic sealing element is arranged for blocking a gap between a sensor detection end of the pressure sensor and the second sealing vent hole, so that on one hand, the air tightness is enhanced, and meanwhile, the air bag pressure monitor can play a role of buffering external impact when shaking, colliding or falling down by utilizing the elastic characteristics of the air bag pressure monitor so as to avoid structural damage.

Further, the air chamber shell of the pressure buffering air volume is fixed in the shell through a fixing screw, the fixing stability is good, meanwhile, the installation and operation are simple and convenient, the assembly efficiency is convenient to improve, and a gap is formed between the outer side surface of the first air chamber shell and the inner side surface of the shell so that the elastic diaphragm provides a deformation space.

For a better understanding and practice, the invention is described in detail below with reference to the accompanying drawings.

Drawings

FIG. 1 is a schematic view of an overall structure of a pressure buffer air volume according to embodiment 1 of the present invention;

FIG. 2 is an exploded view of the pressure buffer gas-capacitor structure according to embodiment 1 of the present invention;

fig. 3 is a schematic structural view of a first chamber housing according to embodiment 1 of the present invention;

FIG. 4 is a schematic structural view of the elastic diaphragm and the second air chamber housing according to embodiment 1 of the present invention;

FIG. 5 is a schematic view of the internal layout of the air bag pressure monitor according to embodiment 2 of the present invention;

fig. 6 is a schematic view of a connection structure of the pressure sensor, the pressure relief valve and the pressure buffer air volume according to embodiment 2 of the present invention;

fig. 7 is an exploded schematic view of a connection structure of the pressure sensor, the pressure relief valve and the pressure buffer air volume according to embodiment 2 of the present invention;

FIG. 8 is a longitudinal sectional view of the first elastic sealing member according to embodiment 2 of the present invention;

FIG. 9 is a side view of a second elastomeric seal according to embodiment 2 of the present invention;

fig. 10 is a schematic sectional view taken along the line a-a in fig. 9.

Detailed Description

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

Example 1

Referring to fig. 1-2, fig. 1 is a schematic overall view of a pressure buffer air-volume structure according to embodiment 1 of the present invention, and fig. 2 is an explosion view of the pressure buffer air-volume structure according to embodiment 1 of the present invention, as shown in the figure, embodiment 1 of the present invention provides a pressure buffer air-volume 1, which includes a hard air-chamber shell and an elastic diaphragm 10; the air chamber shell is provided with an opening, the elastic diaphragm 10 covers the opening, and the air chamber shell and the elastic diaphragm are enclosed to form an air-containing air chamber;

the air chamber shell is provided with a ventilation joint and/or a ventilation hole which are communicated with the air-containing air chamber, and the ventilation joint and/or the ventilation hole are/is used for being connected with a ventilation device.

According to the pressure buffering air volume disclosed by the embodiment 1 of the invention, the hard air chamber shell is arranged, so that the air chamber shell can be installed and fixed in the air bag pressure monitor in a screw or structural limiting mode and the like, and compared with the existing air bag air volume made of pure silica gel, the pressure buffering air volume has the advantage of being simpler and more convenient to install and operate; the opening is formed in the hard air chamber shell, the elastic membrane is covered at the opening to form the air-containing air chamber in a surrounding mode, the air-containing air chamber has definite directionality during inflation and expansion, reasonable space layout design is convenient to be carried out on internal components or rib positions of the air bag pressure monitor, the space reserved for expansion of the air-containing air chamber is saved, the overall miniaturization of the air bag pressure monitor is facilitated, meanwhile, the air bag air chamber can be effectively prevented from being pressed by the internal components or the rib positions and even being punctured during expansion, and the reliability of equipment is improved; in addition, through directly arranging the ventilation joint and/or the ventilation hole for connecting the ventilation device on the hard air chamber shell, compared with the design that the pressure buffer air volume in the prior art needs to be connected with the relevant devices such as a valve, a pressure sensor and the like through a pipeline and a quick joint, in the scheme of the embodiment of the invention, the relevant ventilation device such as the valve, the pressure sensor and the like can be directly and fixedly arranged outside the air chamber shell, the problem of fixedly arranging the relevant devices such as the valve, the pressure sensor and the like in the air bag pressure monitor is not needed to be considered, the connection of an air path is also not needed to be considered, the installation efficiency is improved, and the problem of gas leakage at the connection part caused by excessive use of the joint and the air pipe is effectively avoided.

Specifically, the fixing mode between the elastic membrane 10 and the air chamber shell can be selected according to actual conditions, if the elastic membrane 10 can be directly fixed through bonding or secondarily injected into the surface of the air chamber shell to cover the opening of the air chamber shell, the fixing mode does not need structural cooperation, and the fixing mode is simple in structure and simple and convenient to produce, process and operate. Additionally, as an optional implementation manner, as in this embodiment, the air chamber housing includes a first air chamber housing 20 and a second air chamber housing 30 that are detachably fixed, and the elastic diaphragm 10 is fixed between the first air chamber housing 20 and the second air chamber housing 30 in a limited manner, so that the elastic diaphragm 10 and the second air chamber housing 30 enclose to form an independent air-containing air chamber. Or the air chamber shell comprises a first air chamber shell and a second air chamber shell which are detachably fixed, the elastic membrane is fixed to the first air chamber shell through bonding or injection molding for the second time, and then the first air chamber shell and the second air chamber shell are fixed in a sealing mode.

In this embodiment, please refer to fig. 2-4 simultaneously, fig. 3 is a schematic structural view of the first air chamber housing in embodiment 1 of the present invention, fig. 4 is a schematic structural view of the elastic diaphragm and the second air chamber housing in embodiment 1 of the present invention, as shown in the figure, the first air chamber housing 20 is configured to be a frame-shaped structure having an avoidance opening, and the second air chamber housing 30 is configured to be a box-shaped structure having the opening, where the avoidance opening corresponds to the opening, specifically, in this embodiment, the second air chamber housing 30 is a box-shaped structure having an opening at the top, and in other embodiments, the second air chamber housing may also have an opening at the peripheral side or the bottom, which may actually be determined according to the shape and structure of the airbag pressure monitor product in a specific application.

One part of the elastic diaphragm 10 is clamped between the first air chamber shell 20 and the second air chamber shell 30, the other part of the elastic diaphragm 10 is limited by the deformation of the gas pressure of the gas-containing air chamber at the relief opening, specifically, the peripheral edge of the elastic diaphragm 10 is clamped between the first air chamber shell 20 and the second air chamber shell 30, and the middle part of the elastic diaphragm 10 is deformed at the relief opening. Elastic diaphragm 10 can select for use silica gel material or other can atress to take place elastic deformation's material, furtherly, elastic diaphragm 10's middle part forms protruding 11 towards first air chamber casing 20's direction, and protruding height of 11 is not more than the thickness of first air chamber casing 20's frame type structure, first air chamber casing 20 can play the effect of protection elastic diaphragm 10, can avoid elastic diaphragm 10 to be punctured by other high rigidity or sharp-pointed part in the product after pressure buffering gas holds 1 installation to gasbag pressure monitoring appearance product.

As an alternative embodiment, in the present 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 shell further comprises a plurality of fixing screws; a plurality of first air chamber screw mounting columns 21 are convexly arranged on the outer side surface of the first air chamber shell 20, and each first air chamber screw mounting column 21 is provided with a first screw hole 211 in a penetrating manner; a plurality of second air chamber screw mounting columns 35 are convexly arranged on the outer side surface of the second air chamber shell 30 at positions corresponding to the first air chamber screw mounting columns 21, and each second air chamber screw mounting column 35 is provided with a second screw hole 351 in a penetrating manner; the fixing screws correspondingly penetrate through the first screw holes 211 and the second screw holes 351. It is further preferable that 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 number of the second air chamber screw mounting columns 35 are at least 4, so as to ensure the stability of the fixing 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 the first air chamber screw mounting columns 21 are uniformly arranged along the circumferential direction of the frame-shaped structure of the first air chamber shell 20, so as to ensure that a uniform pressing force is applied to the elastic diaphragm 10.

The first air chamber shell 20 and the second air chamber shell 30 are tightly fixed by the aid of the matching of the fixing screws and the screw holes, the elastic membrane 10 can be tightly pressed, air tightness between the elastic membrane and the second air chamber shell 30 is further improved, the problem of air leakage of the air-containing air chamber is avoided, and in other embodiments, the first air chamber shell 20 and the second air chamber shell 30 can be detachably fixed in other modes.

Further preferably, the peripheral edge of the elastic membrane 10 may further extend toward the second air chamber shell 30 to form a covered edge 12, and the covered edge 12 is circumferentially covered on the outer side surface of the second air chamber shell 30, so as to assist the installation and improve the air tightness between the elastic membrane 10 and the second air chamber shell.

As an alternative embodiment, the second plenum housing 30 includes sidewalls 32, the sidewalls 32 defining a mounting location for the venting means, and the venting means, when fixedly mounted to the mounting location, interfaces with the vent tabs and/or through holes.

Further, referring to fig. 1 and fig. 3, as shown in the figure, a buckle fixing member 22 is convexly disposed on an outer side surface of one side wall 32 of the first air chamber shell 20, and a plurality of fixing buckles 23 are convexly disposed on an edge of the buckle fixing member 22 along a direction toward the second air chamber shell 30; the outer side wall of the second air chamber housing 30 is provided with a plurality of buckling positions 361 in a protruding manner, and a plurality of fixed buckles 23 are movably buckled at the buckling positions 361, specifically, the outer side wall of the second air chamber housing 30 is provided with an air valve supporting member 36 in a protruding manner, and the buckling positions 361 are through holes formed in the air valve supporting member 36, preferably, as shown in fig. 1, the buckling fixing member 22 and the air valve supporting member 36 are respectively located at the upper side and the lower side of the air valve installation position 33, and the plurality of fixed buckles 23 are buckled at the buckling positions 361 and respectively located at the left side and the right side of the air valve installation position 33, so that the air valve supporting member 36 and the fixed buckles 23 are enclosed to form the air valve installation position 33, and the air valve installation position 33 is used for installing a pressure release valve.

Utilize fixed buckle 23 and detain the cooperation of position 361 and be used for injecing air outlet valve installation position, can improve the fixed stability of first air chamber casing 20 with second air chamber casing 30 simultaneously, and can install the direction, go ahead when the installation with fixed buckle 23 lock in detaining position 361, realize the assistance-localization real-time to first air chamber casing 20 to further adopt set screw installs fixedly.

Example 2

The embodiment of the invention provides an air bag pressure monitor, which comprises a shell 2, a ventilation device arranged in the shell 2 and a pressure buffering air volume 1 as described in embodiment 1. The hard air chamber shell is fixedly arranged in the shell; the outer side wall of the air chamber shell forms a mounting position of the ventilation device, at least part of the ventilation device is fixedly mounted at the mounting position, and when the ventilation device is fixedly mounted at the mounting position, the ventilation device is butted with the ventilation joint and/or the through hole.

In particular, the venting means will comprise an air pump, a one-way valve 4, a pressure sensor 5 and a pressure relief valve 6.

Referring to fig. 5-7, fig. 5 is a schematic view of an internal layout of an airbag pressure monitor according to embodiment 2 of the present invention, fig. 6 is a schematic view of a connection structure of a pressure sensor, a pressure release valve, and a pressure buffer air chamber according to embodiment 2 of the present invention, and fig. 7 is a schematic view of an explosion of the connection structure of the pressure sensor, the pressure release valve, and the pressure buffer air chamber according to embodiment 2 of the present invention. The pressure sensor 5 is fixed at the sensor fixing position, and the sensor detection end 52 of the pressure sensor 5 is limited in the sensor vent hole 342; the pressure relief valve 6 is fixed on the air valve mounting position 33, specifically, on the air valve support 36 of the pressure buffering air volume 1, and is fixed and limited in the accommodating space enclosed by the buckle fixing member 22, the fixing buckle 23 and the air valve support 36, and the valve port 61 of the pressure relief valve 6 is communicated with the air valve vent hole 331.

The air connector 31 of the pressure buffer air container 1 comprises an air outlet connector 311 and an air inlet connector 312, the air outlet connector 311 is communicated with an object to be pressure monitored, namely an artificial airway air bag, through a connecting pipe, and two ends of the check valve 4 are respectively communicated with the air pump 3 and the air inlet connector 312. The pressure sensor 5 is fixed at the sensor fixing position 34 of the pressure buffer air volume 1, and the pressure sensor 5 is communicated with the sensor vent hole 341; pressure relief valve 6 the pressure relief valve 6 is in communication with the valve vent 331.

The air bag pressure monitoring instrument in embodiment 2 of the invention is communicated with the artificial air passage air bag to monitor the pressure of the artificial air passage air bag; because the air outlet joint 311 of the pressure buffer air volume 1 is communicated with the artificial air passage air bag through a pipeline, the air pressure in the air bag pressure monitoring instrument and the artificial air passage air bag have the same air pressure, and the air bag pressure monitoring instrument is provided with the pressure sensor 5 and is used for detecting the air pressure in the air volume air chamber of the pressure buffer air volume 1, namely the air pressure in the artificial air passage air bag; when the measured gas pressure is too low, the air bag pressure monitor utilizes the built-in air pump 3 to introduce air through the one-way valve 4, and further introduces the air into the artificial airway air bag through the air outlet joint 311 and the pipeline, so as to achieve the purpose of increasing the pressure of the air bag; when the measured gas pressure is too high, the gas bag pressure monitor discharges the gas in the gas containing chamber by using the pressure release valve 6, so that the purpose of reducing the gas bag pressure is achieved; through the two processes, the gas pressure in the gas-containing air chamber and the artificial airway air bag can be maintained at a proper value for a long time, the purpose of pressure monitoring is achieved, and meanwhile, when the pressure is too high or too low, the elastic diaphragm 10 can be deformed to increase or reduce the volume of the gas-containing air chamber, so that the inflation pressure is buffered, and the sudden increase or reduction of the pressure in the artificial airway air bag is avoided.

As an optional implementation manner, in this embodiment, the pressure sensor 5 is fixed to the sensor fixing location 34 by a fixing screw (not shown), specifically, the pressure sensor 5 includes a circuit board 51 and a plurality of sensor detecting ends 52 electrically connected to the circuit board 51, a fixing hole 511 is formed in the circuit board 51 in a penetrating manner, a screw mounting post 37 is convexly disposed on the outer side surface of the side wall 32 of the pressure buffer air volume 1 at a position corresponding to the fixing screw, and the fixing screw correspondingly penetrates through the fixing hole 511 and is fixed to the screw mounting post 37 in a threaded manner; the sensor detection ends 52 are correspondingly arranged in the sensor vent holes 341 in a penetrating way.

Further preferably, the pressure buffer air container 1 further comprises a plurality of first elastic sealing members 40 and a plurality of second elastic sealing members 70.

The first elastic sealing elements 40 are correspondingly and interference-limited in the air valve vent holes 331, each first elastic sealing element 40 is provided with a first sealing vent hole 41 in a penetrating manner, the first sealing vent holes 41 are communicated with the air valve vent holes 331, and the valve port 61 of the pressure relief valve 6 is correspondingly and interference-limited in the first sealing vent holes 41.

Preferably, referring to fig. 8, fig. 8 is a schematic longitudinal sectional view of a first elastic sealing element structure according to embodiment 2 of the present invention, the first elastic sealing element 40 sequentially includes a first elastic limiting portion 42 and a first elastic sealing portion 43 fixedly connected along a central axis direction of the first sealing vent hole 41, an outer diameter of the first elastic limiting portion 42 is greater than an inner diameter of the air valve vent hole 331, the first elastic sealing portion 43 is limited in the air valve vent hole 331 by interference, the first elastic limiting portion 42 is configured to limit a penetrating position of the first elastic sealing element 40 in the air valve vent hole 331, so as to prevent the first elastic sealing element 40 from accidentally entering the air containing chamber to cause sealing failure, and further, an annular protrusion 431 may be further disposed on an outer side surface of the first elastic sealing portion 43 along a circumferential direction to enhance air tightness of interference fit with the air valve vent hole 331; an outer chamfer 432 is arranged at the end part of the first elastic sealing part 43 so as to be penetrated into the air valve vent hole 331, and an inner chamfer 433 is arranged at the end part of the first sealing vent hole 41 close to the first elastic limiting part 42 so as to be penetrated into the first sealing vent hole 41 by the valve port 61 of the pressure relief valve 6.

The second elastic sealing element 70 is correspondingly interference-limited in the sensor vent hole 341, each second elastic sealing element 70 is provided with a second sealing vent hole 71 in a penetrating way, the second sealing vent hole 71 is communicated with the sensor vent hole 341, and the sensor detection end 52 is correspondingly interference-limited in the second sealing vent hole 71.

The conventional pressure sensor generally has a plurality of sensor detecting ends, the second elastic sealing member 70 has a structure similar to that of the first elastic sealing member 40, that is, one second elastic sealing member 70 is used corresponding to each sensor detecting end 52, or, to further improve the installation convenience, refer to fig. 9-10, fig. 9 is a schematic side view of the structure of the second elastic sealing member according to embodiment 2 of the present invention, fig. 10 is a schematic sectional view taken along the direction a-a shown in fig. 9, as shown in the drawings, in this embodiment, the second elastic sealing member 70 includes a second elastic limiting portion 72 and a plurality of second elastic sealing portions 73, the second elastic limiting portion 72 has a plurality of limiting member through holes formed therethrough, the second elastic sealing member 70 is protrudingly fixed to a side surface of the second elastic limiting portion 72, the second elastic sealing member 70 is correspondingly interference-limited in the sensor vent 341, each second elastic sealing member 70 has a sealing member through hole formed therethrough, and correspondingly communicate with the position-limiting member through holes to form second sealed vent holes 71, the number and positions of the position-limiting member through holes need to be adjusted and designed according to the number and position distribution of the sensor detection ends 52, and the shape of the second elastic position-limiting part 72 can be adjusted and designed according to actual conditions.

The first elastic sealing element 40 and the second elastic sealing element 70 can be made of silica gel or other elastic materials, the first elastic sealing element 40 is arranged for blocking a gap between the valve port 61 of the pressure release valve 6 and the first sealing vent hole 41, and the second elastic sealing element 70 is arranged for blocking a gap between the sensor detection end 52 and the second sealing vent hole 71, so that the air tightness is enhanced, and meanwhile, the air bag pressure monitor can play a role in buffering external impact when shaking, colliding or falling down so as to avoid structural damage.

Furthermore, the airbag pressure monitor of the embodiment of the invention further comprises a battery 7, wherein the battery 7 is electrically connected with the air pump 3, the pressure sensor 5 and the pressure release valve 6 respectively, and an external power supply can be prevented from being introduced by using a lead through the arrangement of an internal power supply.

Further, the number of the pressure relief valves 6 is at least 2, the number of the air valve vent holes 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 volume 1 and correspondingly communicated with the air valve vent holes 331. The arrangement of the pressure relief valves can avoid the problem that the whole air bag pressure monitoring instrument cannot normally work due to the use of a single pressure relief valve when the single pressure relief valve fails, and the reliability of the device is improved.

In the embodiment, the air chamber shell of the pressure buffering air volume 1 can be made of plastic, and compared with a traditional pure silica gel air volume air bag, the pressure buffering air volume 1 disclosed by the invention can be fixed in the shell 2 through a fixing screw, so that the fixing stability is good, meanwhile, the installation and the operation are simple and convenient, the assembly efficiency is convenient to improve, the problem that the air bag of the pressure buffering air volume 1 in the prior art is inconvenient to fix in a pressure monitor is effectively solved, and in other implementation modes, the air chamber shell of the pressure buffering air volume 1 can be fixed in other modes, such as a buckling mode or a tabling mode; in addition, the outer side surface of the first chamber housing 20 forms a gap with the inner side surface of the housing 2 to provide a deformation space for the elastic diaphragm 10.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.

Claims (13)

1. A pressure buffer gas capacity, its characterized in that:

comprises a hard air chamber shell and an elastic diaphragm; the air chamber shell is provided with an opening, the elastic diaphragm is covered at the opening, and the air chamber shell and the elastic diaphragm enclose to form an air-capacity air chamber;

the air chamber shell is provided with a ventilation joint and/or a ventilation hole which are communicated with the air-containing air chamber, and the ventilation joint and/or the ventilation hole are/is used for being connected with a ventilation device.

2. A pressure buffer gas volume as claimed in claim 1, wherein: the air chamber shell comprises a first air chamber shell and a second air chamber shell which are detachably fixed, and the elastic diaphragm is fixed between the first air chamber shell and the second air chamber shell in a limiting mode.

3. A pressure buffer gas volume as claimed in claim 2, wherein: the first air chamber shell is configured to be a frame-type structure with an avoidance port, the second air chamber shell is configured to be a box-type structure with the opening, and the avoidance port corresponds to the opening; one part of the elastic diaphragm is clamped between the first air chamber shell and the second air chamber shell, and the other part of the elastic diaphragm is limited by the deformation of the gas pressure of the gas containing air chamber at the avoiding opening.

4. A pressure buffer gas volume as claimed in claim 3, wherein: the first air chamber shell faces the protruding a plurality of strengthening ribs that are provided with of one side surface of second air chamber shell, elastic diaphragm interference spacing in the strengthening rib with between the second air chamber shell.

5. A pressure buffer gas volume according to any of claims 2-4, characterized in that:

the peripheral edge of the elastic membrane extends towards the second air chamber shell to form a wrapping edge, and the wrapping edge is arranged on the outer side surface of the second air chamber shell along the circumferential cover.

6. A pressure buffer gas volume as claimed in claim 1, wherein: the elastic membrane is bonded with the opening edge of the air chamber shell.

7. A pressure buffer gas volume as claimed in claim 1, wherein: the outer side wall of the air chamber shell forms a mounting position of the ventilation device, and when the ventilation device is fixedly mounted to the mounting position, the ventilation device is in butt joint with the ventilation joint and/or the through hole.

8. A pressure buffer gas volume as claimed in claim 2, wherein:

the venting means comprises a pressure relief valve;

a plurality of fixing buckles are convexly arranged on the outer side surface of the first air chamber shell; a plurality of buckling positions are arranged on the outer side wall of the second air chamber shell in a protruding mode, and a plurality of fixed buckles are movably buckled on the buckling positions;

the fixed buckle and the buckling position are enclosed to form an air valve installation position, and the air valve installation position is used for installing a pressure release valve.

9. An air bag pressure monitor is characterized in that: comprising a housing, a venting device disposed within the housing, and a pressure buffer reservoir as claimed in any one of claims 1 to 8; the hard air chamber shell is fixedly arranged in the shell; the outer side wall of the air chamber shell forms a mounting position of the ventilation device, at least part of the ventilation device is fixedly mounted at the mounting position, and when the ventilation device is fixedly mounted at the mounting position, the ventilation device is butted with the ventilation joint and/or the through hole.

10. The bladder pressure monitor according to claim 9, wherein: the ventilation device comprises an air pump and a one-way valve;

the air connector of the pressure buffering air capacitor further comprises an air outlet connector and an air inlet connector, the air outlet connector is used for being communicated with an object to be pressure monitored, and two ends of the one-way valve are respectively communicated with the air pump and the air inlet connector.

11. The bladder pressure monitor according to claim 9, wherein: the ventilation device comprises a pressure sensor and a pressure relief valve;

the mounting position comprises a sensor fixing position and a gas valve mounting position, a plurality of gas valve vent holes are formed in the gas valve mounting position, a plurality of sensor vent holes are formed in the sensor fixing position, and the gas valve vent holes and the sensor vent holes are communicated with the gas-containing air chamber; the pressure sensor is fixed at the sensor fixing position, and the sensor detection end of the pressure sensor is limited in the sensor vent hole; the pressure release valve is fixed on the air valve installation position, and a valve port of the pressure release valve is communicated with the air valve vent hole.

12. The bladder pressure monitor according to claim 11, wherein: the pressure buffering air volume also comprises a plurality of first elastic sealing elements and a plurality of second elastic sealing elements;

the first elastic sealing elements are correspondingly limited in the air valve vent holes in an interference manner, each first elastic sealing element is provided with a first sealing vent hole in a penetrating manner, the first sealing vent holes are communicated with the air valve vent holes, and a valve port of the pressure release valve is correspondingly limited in the first sealing vent holes in an interference manner;

the second elastic sealing element is correspondingly limited in the sensor vent hole in an interference manner, each second elastic sealing element penetrates through the sensor vent hole to be provided with a second sealing vent hole, the second sealing vent hole is communicated with the sensor vent hole, and the sensor detection end of the pressure sensor is correspondingly limited in the second sealing vent hole in an interference manner.

13. The bladder pressure monitor according to claim 9, wherein: the air chamber shell of the pressure buffering air volume is fixed in the shell through a fixing screw, and a gap is formed between the outer side surface of the first air chamber shell and the inner side surface of the shell.

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