CN116251274A

CN116251274A - Airbag inflation and pressure indication device

Info

Publication number: CN116251274A
Application number: CN202310402012.6A
Authority: CN
Inventors: 杨振创
Original assignee: Tianjin Guangyitong Technology Co ltd
Current assignee: Tianjin Guangyitong Technology Co ltd
Priority date: 2023-04-15
Filing date: 2023-04-15
Publication date: 2023-06-13

Abstract

The invention relates to an airbag inflation and pressure indicating device. The pressure sensing assembly with the interface tube is connected to the front part of the shell in a sealing way, and the pressure indicating assembly is arranged in the shell; the front end of the shell is provided with a gas guide valve, a sealing soft bag sleeve is arranged between the pressure indicating assembly and the gas guide valve, the inner space of the sealing soft bag sleeve is communicated with the outside atmosphere through a first air flow channel arranged on the gas guide valve and a vent hole arranged on the pressure sensing assembly, the outer space of the sealing soft bag sleeve is communicated with an interface tube of the pressure sensing assembly through a second air flow channel arranged on the gas guide valve, and the pressure indicating assembly performs elastic expansion and contraction action under the pressure difference effect of the two spaces; a one-way air valve structure is arranged between the shell and the rear part of the pressure indicating assembly. The invention provides an air bag inflation and pressure indication device which has the functions of air bag inflation and deflation control, air bag pressure indication and air bag pressure subjective perception.

Description

Airbag inflation and pressure indication device

Technical Field

The invention belongs to the technical field of medical appliances, and particularly relates to an air bag inflation and pressure indication device.

Background

In the medical field, it is in some cases desirable to establish air pressure for a balloon and indicate the pressure condition of the balloon, for example in connection with the application of a laryngeal mask, endotracheal tube or the like gas channel. Taking the application of the tracheal catheter as an example, a doctor inserts the tracheal catheter into a proper position of the throat of a patient, then inflates the air bag on the tracheal catheter, the size of the air bag after inflation just seals the gap between the catheter and the tracheal wall, the air bag is easy to shift and even fall off when the internal pressure of the air bag is too small, the aspiration and reflux of gastric secretion are caused, and the compression to the tracheal mucosa is caused when the internal pressure of the air bag is too large, so that the mucous membrane is damaged.

By providing a sensing means and/or an indicating means for the pressure of the air bag, the medical staff can be helped to master the pressure condition of the air bag, and the problems of displacement, falling, mucous membrane injury and the like are avoided by adjusting the pressure of the air bag as appropriate. The air bag pressure sensing means may be: a pressure sensing air bag is arranged between the air charging pipe and the one-way air valve, and the pressure sensing air bag is communicated with the air bag of the assembly to be equal in pressure, so that medical staff can subjectively sense and judge the air bag pressure through pinching the pressing force sensing air bag by fingers. The balloon pressure indication means may be: and setting an air bag pressure indicator, and judging the air bag pressure by observing the indication condition of the indicator by medical staff.

However, in the medical field, it is often difficult for a single balloon pressure sensing or indicating means to meet the use requirements of medical staff, and it is desirable for the product to provide both a relatively accurate balloon pressure indicating function and a subjective balloon pressure sensing function by pinching and pressing, and simultaneously provide the functions of inflating and deflating the balloon. The existing products can not meet the requirements, and are required to be developed and designed according to the requirements of the industry.

Disclosure of Invention

The invention provides an air bag inflation and pressure indication device for solving the technical problems in the prior art, which has the functions of air bag inflation and deflation control, air bag pressure indication and air bag pressure subjective perception and provides convenience for the operation of medical staff.

The invention adopts the technical proposal for solving the technical problems in the prior art that: the air bag inflating and pressure indicating device comprises a shell, wherein the front part of the shell is connected with a pressure sensing component with a connector tube in a sealing way, and the pressure indicating component is arranged in the shell; the front end of the shell is provided with a gas guide valve, a sealing soft bag sleeve is arranged between the pressure indicating assembly and the gas guide valve, the inner space of the sealing soft bag sleeve is communicated with the outside atmosphere through a first air flow channel arranged on the gas guide valve and a vent hole arranged on the pressure sensing assembly, the outer space of the sealing soft bag sleeve is communicated with an interface tube of the pressure sensing assembly through a second air flow channel arranged on the gas guide valve, and the pressure indicating assembly performs elastic expansion and contraction action under the pressure difference effect of the two spaces; a one-way air valve structure is arranged between the shell and the rear part of the pressure indicating assembly.

Preferably: the pressure indicating assembly comprises an inner base, an indicating cursor, an elastic connecting piece, a sealing soft bag sleeve and an air guiding valve, wherein the inner base is installed and fixed inside the shell, the indicating cursor moving along the axial direction is installed on the inner base, the elastic connecting piece is installed between the inner base and the indicating cursor, and the sealing soft bag sleeve is installed between the indicating cursor and the air guiding valve.

Preferably: the inside base includes the joint pterygoid lamina of being connected with the block structure block that sets up in the shell, pipe box behind the rear portion of joint pterygoid lamina is equipped with the base, the front portion is equipped with the base front shroud, the lateral part of pipe box is equipped with base side window before the base, the root is equipped with the base draw-in groove, the rear end block of elastic connection spare is connected in the base draw-in groove.

Preferably: the indicating cursor comprises a cursor front boss, a cursor pipe sleeve is arranged at the rear part of the cursor front boss, a cursor side window is arranged at the side part of the cursor pipe sleeve, a cursor clamping groove is arranged at the root part of the cursor pipe sleeve, and the front end of the elastic connecting piece is clamped and connected in the cursor clamping groove.

Preferably: the side wall of the base front pipe sleeve of the inner base is provided with an axial strip-shaped sliding groove, the inner wall of the cursor pipe sleeve for indicating the cursor is provided with an axial strip-shaped sliding block, the base front pipe sleeve is inserted into the cursor pipe sleeve, and the strip-shaped sliding block is positioned in the strip-shaped sliding groove.

Preferably: an indication board is arranged on the outer wall of the rear end of the cursor pipe sleeve, a transparent window is arranged on the side part of the middle part of the shell, and an indication mark which is matched with the indication board to realize pressure condition indication is arranged on the transparent window.

Preferably: the unidirectional air valve structure comprises an elastic valve core which is positioned in a base rear pipe sleeve of the inner base, a valve head is arranged at the outer end of the elastic valve core, a shrinkage part is arranged at the rear part of the shell, the elastic valve core is positioned in the shrinkage part, and a shell interface pipe is arranged behind the shrinkage part.

Preferably: the pressure sensing component is a pressure sensing bag sleeve, the pressure sensing bag sleeve comprises an outer sleeve with an open rear part, the air guide valve is coated in the outer sleeve, a bag sleeve pipe serving as the interface pipe and a bag sleeve air hole serving as the air hole are arranged at the front part of the outer sleeve, and an elastic bag for sensing the internal pressure by pressing is further arranged at the side part of the outer sleeve.

Preferably: the air guide valve comprises a valve body, and valve air holes which are axially communicated are formed in the valve body and form the first air flow channel; the valve body is also provided with a transverse through communicating air hole and an axial through air hole, the air hole is communicated with the communicating air hole, the front center of the valve body is also provided with a center hole communicated with the communicating air hole, and the center hole, the communicating air hole and the air hole form the second air flow channel.

Preferably: the two sides of the rear part of the valve body of the air guide valve are provided with clamping hooks, and corresponding positions on the inner wall of the front part of the shell are provided with clamping grooves matched with the clamping hooks.

The invention has the advantages and positive effects that:

the invention provides an airbag inflation and pressure indicating device with reasonable structural design, which has the functions of airbag inflation and deflation control, airbag pressure indication and subjective airbag pressure perception, and provides convenience for the operation of medical staff.

The pressure indicating device is arranged inside and axially performs elastic expansion action under the action of pressure difference between the inner space and the outer space of the sealing soft bag sleeve, so that the technical effect of indicating the pressure is realized, and the pressure condition is accurately indicated. By arranging the pressure sensing assembly, the feedback of the air bag pressure is realized, and the technical effect of subjective sensing of the air bag pressure through pinching and pressing and other operations is achieved. Therefore, the air bag inflation and pressure indication device allows medical staff to read the air bag pressure through the observation pressure indication assembly and subjectively judge the air bag pressure through the pinching pressure sensing assembly, the dual functions of pressure indication and sensing provide operation convenience for the medical staff to acquire the air bag pressure, and the combination of objective indication and subjective sensing is beneficial to the medical staff to make better judgment on the air bag pressure, so that the air bag pressure is regulated to a relatively proper level, and a plurality of problems caused by the fact that the air bag pressure is too high or too low are avoided. On the other hand, through the air bag inflation and pressure indication device, medical staff can conveniently operate the air bag to inflate and deflate.

Drawings

FIG. 1 is a schematic view of the external structure of the present invention;

FIG. 2 is a schematic cross-sectional view of the present invention, taken along the major axis;

FIG. 3 is a schematic cross-sectional view of the present invention, in the short axis direction;

FIG. 4 is a schematic view of the construction of the pressure sensing bladder of the present invention;

FIG. 5 is a schematic view of the structure of the housing and indicator of the present invention;

FIG. 6 is a schematic view of the construction of the internal components of the present invention;

FIG. 7 is a schematic view of the connection structure of the inner base and the elastic connection member in FIG. 6;

FIG. 8 is a schematic view of the structure of the inner base of FIG. 6;

FIG. 9 is a schematic diagram showing the connection structure of the cursor and the elastic connection member in FIG. 6;

FIG. 10 is a schematic view of the cursor in FIG. 6;

fig. 11 is a schematic cross-sectional view of the air guide valve of the present invention.

In the figure:

1. a housing; 1-1, a clamping groove; 1-2, a shell; 1-3, a matching plane; 1-4, a transparent window; 1-5, a necking part; 1-6, a shell interface tube; 2. an indication mark; 3. a pressure sensing cuff; 3-1, a jacket; 3-2, an elastic bag; 3-3, a balloon nipple; 3-4, air holes of the bag cover; 3-5, matching with the boss; 4. a valve head; 5. an elastic valve core; 6. an inner base; 6-1, a rear pipe sleeve of the base; 6-2, clamping wing plates; 6-3, a strip-shaped chute; 6-4, a front pipe sleeve of the base; 6-5, a base clamping groove; 6-6, a base side window; 7. an elastic connection member; 8. an indication cursor; 8-1, inserting a rod; 8-2, a cursor front boss; 8-3, a vernier sleeve; 8-4, an indication board; 8-5, a vernier clamping groove; 8-6, a cursor side window; 8-7, a strip-shaped sliding block; 9. sealing the soft bag sleeve; 10. an air guide valve; 10-1, clamping hooks; 10-2, air guide holes; 10-3, a central hole; 10-4, valve ventilation holes; 10-5, communicating air holes; 10-6, jack.

Detailed Description

For a further understanding of the invention, reference should be made to the following drawings and to the accompanying examples which illustrate the invention:

in the description of the present invention, it should be noted that, directions or positional relationships indicated by terms such as "vertical", "upper", "lower", "horizontal", etc. are directions or positional relationships based on those shown in the drawings, only for convenience of description of the present invention and simplification of the description, rather than indicating or suggesting that the apparatus or element in question must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," "fourth," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, integrally connected, mechanically connected, electrically connected, directly connected, connected through an intermediary, or connected through communication between two elements. The specific meaning of the above terms in this application will be understood by those of ordinary skill in the art according to the specific circumstances.

Fig. 1 is a view showing an external construction of an air bag inflation and pressure indicating apparatus of the present invention, and fig. 2 and 3 are a view showing a sectional construction of an air bag inflation and pressure indicating apparatus of the present invention. This gasbag is inflated and pressure indication device provides three kinds of functions: firstly, the air bag is inflated and deflated; secondly, the bag pressure of the air bag is displayed for medical staff to check; third, provide subjective pressure perception means for medical personnel, medical personnel subjective perception bag presses through modes such as pressing.

The device comprises a shell 1, wherein the front part of the shell 1 is hermetically connected with a pressure sensing component with an interface pipe, the inside of the shell 1 is provided with a pressure indicating component, and a one-way air valve structure is further arranged between the shell 1 and the rear part of the pressure indicating component. As shown in the figure, the shell 1 and the pressure sensing component at the front part jointly form a shell structure, other components are arranged in the shell structure, the device performs inflation and deflation control through the unidirectional air valve structure at the rear part, when the external inflation pressure forces the unidirectional air valve structure to be conducted, air is infused into the air bag through the device, the bag pressure is increased, when the inflation device is removed, the external pressure is reduced, under the action of the internal air pressure and the reset elastic force of the unidirectional air valve structure, the unidirectional air valve structure is closed, the air bag is pressurized, when pressure relief is needed, the unidirectional air valve structure is triggered to be conducted, but the air passage is not closed, and then the internal air is discharged. The pressure indicating component indicates the capsule pressure to be observed by medical staff, and the pressure sensing component provides a subjective capsule pressure sensing means for the medical staff.

The front end of the shell 1 is provided with an air guide valve 10, a sealing soft bag sleeve 9 is arranged between the pressure indication assembly and the air guide valve 10, the inner space of the sealing soft bag sleeve 9 is communicated with the outside atmosphere through a first air flow channel arranged on the air guide valve 10 and an air vent arranged on the pressure sensing assembly, the outer space of the sealing soft bag sleeve 9 is communicated with an interface tube of the pressure sensing assembly through a second air flow channel arranged on the air guide valve 10, and the pressure indication assembly performs elastic expansion action under the action of the pressure difference of the two spaces.

When the pressure sensing device is actually used, the interface tube of the pressure sensing component is connected to the air bag through the hose, so that the inner cavity of the interface tube is communicated with the inner cavity of the air bag through the hose, and the pressure of the space communicated with the interface tube is equal to the bag pressure of the air bag. Since the inner space of the sealing cuff 9 is in communication with the outside atmosphere, the pressure of the inner space of the sealing cuff 9 is equal to the atmospheric pressure. The pressure in the two spaces has a difference value, and the magnitude of the air bag pressure can be reflected by the difference value. As the pressure in the air bag changes, the pressure difference changes to cause the pressure indicating assembly to stretch and retract, and as shown in the figure, the pressure indicating assembly stretches and the sealing soft bag sleeve 9 further compresses when the pressure in the air bag gradually increases, and conversely, the pressure indicating assembly contracts and the sealing soft bag sleeve 9 further stretches when the pressure in the air bag gradually decreases. This is the basic principle that this gasbag aerifys and pressure indication device instructs the bag pressure.

Referring to fig. 2, 3 and 6, it can be seen that:

the pressure indicating assembly comprises an inner base 6 which is fixedly arranged in the shell 1, an indicating cursor 8 which moves along the axial direction is arranged on the inner base 6, an elastic connecting piece 7 is arranged between the inner base 6 and the indicating cursor 8, and a sealing soft bag sleeve 9 is arranged between the indicating cursor 8 and an air guiding valve 10. The position of the inner base 6 is determined after assembly, while the indicator cursor 8 is movable in translation along the axial direction, during which the elastic connection 7 between the two is compressed or stretched.

The elastic connecting piece 7 can be selected as a spring or an elastomer formed by injection molding of the existing elastic polymer material, and has a certain elastic coefficient, and the scheme of adopting the elastic polymer material elastomer as the elastic connecting piece 7 is shown in the drawing. In the non-use state, the air pressure of the inner space and the outer space of the sealing soft bag sleeve 9 is equal to the atmospheric pressure, so that no pressure difference exists, and the cursor 8 is indicated to move to the initial zero position under the elastic action of the elastic connecting piece 7.

Referring to fig. 7 and 8, it can be seen that:

the inner base 6 comprises a clamping wing plate 6-2 which is in clamping connection with a clamping structure arranged in the shell 1, a base rear pipe sleeve 6-1 is arranged at the rear part of the clamping wing plate 6-2, a base front pipe sleeve 6-4 is arranged at the front part of the clamping wing plate, a base side window 6-6 is arranged at the side part of the base front pipe sleeve 6-4, a base clamping groove 6-5 is arranged at the root part of the base front pipe sleeve, and the rear end of the elastic connecting piece 7 is in clamping connection with the base clamping groove 6-5.

As shown in fig. 3, a locking structure is provided inside the housing 1, the locking structure is a connection locking groove, the edge of the locking wing plate 6-2 falls into the connection locking groove, and after the inner base 6 is put into the housing 1 and the locking wing plate 6-2 is connected with the connection locking groove, the inner base 6 is integrated with the housing 1.

As shown in fig. 7, the base catching groove 6-5 is T-shaped from the side, the rear end of the elastic connection member 7 has a thin neck and a flat cylindrical rear end is provided at the rear end of the neck, the elastic connection member 7 is put into the inside from the side by the base side window 6-6, and the rear neck and rear end slide into the base catching groove 6-5.

Referring to fig. 9 and 10, it can be seen that:

the indicating cursor 8 comprises a cursor front boss 8-2, a cursor pipe sleeve 8-3 is arranged at the rear part of the cursor front boss 8-2, a cursor side window 8-6 is arranged at the side part of the cursor pipe sleeve 8-3, a cursor clamping groove 8-5 is arranged at the root part, and the front end of the elastic connecting piece 7 is clamped and connected in the cursor clamping groove 8-5.

As shown in fig. 9, the cursor clamping groove 8-5 is T-shaped from the side, the front end of the elastic connecting piece 7 is provided with a thinner neck part and a flat cylindrical front end is arranged at the front end of the neck part, the elastic connecting piece 7 is placed into the interior from the side through the cursor side window 8-6, and the neck part and the front end at the front part slide into the cursor clamping groove 8-5.

The indicator cursor 8 moves in the axial direction, producing a pulling or compression action on the elastic connection 7. As shown in fig. 2, 3 and 6, an axial bar-shaped sliding groove 6-3 is provided on the side wall of the base front tube sleeve 6-4 of the inner base 6, an axial bar-shaped sliding block 8-7 is provided on the inner wall of the cursor tube sleeve 8-3 of the indication cursor 8, the base front tube sleeve 6-4 is inserted in the cursor tube sleeve 8-3 and the bar-shaped sliding block 8-7 is positioned in the bar-shaped sliding groove 6-3. Through the cooperation between bar slider 8-7 and bar spout 6-3, promote the stability when instruction cursor 8 makes translational movement, promote the instruction degree of accuracy.

In this embodiment, be equipped with the instruction board 8-4 on the rear end outer wall of vernier tube cover 8-3, be equipped with transparent window 1-4 at the middle part lateral part of shell 1, be equipped with on transparent window 1-4 with the instruction sign 2 that the instruction board 8-4 cooperated and realized the pressure condition and instruct, see through transparent window 1-4 and can observe the axial displacement of instruction board 8-4, the yellow warning district of instruction sign 2 can mark, green safety zone and red warning district, the instruction board 8-4 removes to different regional representation encapsulation pressure and is in different levels, medical personnel reads the pressure condition according to the instruction. In order to improve the convenience of observation, the indicating plate 8-4 is provided with a front part and a rear part, and correspondingly, the transparent window 1-4 and the indicating mark 2 are provided with a front part and a rear part.

Referring to fig. 1, 3 and 4, it can be seen that: the pressure sensing component is a pressure sensing bladder sleeve 3.

The pressure sensing bag cover 3 comprises an outer cover 3-1 with an open rear part, an air guide valve 10 is wrapped inside the outer cover 3-1, a bag sleeve pipe 3-3 serving as the interface pipe and a bag sleeve air hole 3-4 serving as the air hole are arranged at the front part of the outer cover 3-1, and an elastic bag 3-2 for sensing the internal pressure by pressing is further arranged at the side part of the outer cover 3-1.

The main body part of the pressure sensing bag sleeve 3 is integrally injection molded, and the elastic bag 3-2 can be integrally injection molded with the main body part or be connected with the main body part in a split molding mode by adopting bonding, welding and other modes.

Referring to fig. 5, it can be seen that:

the main body part of the shell 1 is integrally injection molded, the front part of the shell 1-2 is open, and the transparent window 1-4 can be integrally molded with the main body part or can be connected with the main body part in a bonding, welding and other modes after being separately molded. The indication mark 2 may be arranged outside the transparent window 1-4.

The rear part of the pressure sensing bag sleeve 3 is in plug connection and sealing connection with the front part of the shell 1, as shown in the figure, the front part of the shell 1 is inserted into the rear part of the pressure sensing bag sleeve 3 and is connected in a bonding, welding and other modes, so that the sealing effect is ensured. In order to improve the convenience of assembly and provide positioning for plug connection, in this embodiment, a mating plane 1-3 is disposed on the front side of the shell 1-2 of the housing 1, and correspondingly, a mating boss 3-5 is disposed on the inner wall of the rear portion of the outer sleeve 3-1 of the pressure sensing bladder 3, so that the mating boss 3-5 is opposite to the mating plane 1-3 during plug connection.

Referring to fig. 6 and 11, it can be seen that:

the air guide valve 10 comprises a conical valve body, and an axially-through valve air hole 10-4 is formed in the valve body, and the valve air hole 10-4 forms the first air flow channel. The valve body is also provided with a transverse through communicating air hole 10-5 and an axial through air guide hole 10-2, the air guide hole 10-2 is communicated with the communicating air hole 10-5, the front center of the valve body is also provided with a center hole 10-3 communicated with the communicating air hole 10-5, and the center hole 10-3, the communicating air hole 10-5 and the air guide hole 10-2 form the second air flow channel. After assembly, the central hole 10-3 is aligned with the cuff tube 3-3 of the pressure sensing cuff 3 in the axial direction, and the valve ventilation holes 10-4 are aligned with the cuff air holes 3-4 on the pressure sensing cuff 3 in the axial direction.

As shown in fig. 2 and 3, the rear end of the sealing soft bag sleeve 9 is sleeved on the cursor front boss 8-2 of the indication cursor 8 and is in sealing connection by means of bonding, welding and the like, and the front end of the sealing soft bag sleeve 9 is sleeved on the rear part of the valve body of the air guide valve 10 and is in sealing connection by means of bonding, welding and the like.

In this embodiment, the two sides of the rear portion of the valve body of the air guiding valve 10 are provided with the hooks 10-1, and the corresponding positions on the inner wall of the front portion of the housing 1 are provided with the clamping grooves 1-1 matched with the hooks 10-1, so that the air guiding valve 10 and the housing 1 are combined into a whole in a clamping connection manner.

In this embodiment, a jack 10-6 is provided in the center of the back of the valve body of the air guiding valve 10, and correspondingly, a plug rod 8-1 is provided in the center of the front of the cursor front boss 8-2 of the indication cursor 8, and during the axial movement of the indication cursor 8, the plug rod 8-1 can be inserted into the jack 10-6 or be separated from the jack 10-6.

Referring to fig. 2 and 3, it can be seen that: the unidirectional air valve structure comprises an elastic valve core 5 positioned in a base rear pipe sleeve 6-1 of an inner base 6, a valve head 4 is arranged at the outer end of the elastic valve core 5, a shrinkage part 1-5 is arranged at the rear part of a shell 1, the elastic valve core 5 is positioned in the shrinkage part 1-5, a shell interface pipe 1-6 is arranged at the rear part of the shrinkage part 1-5, and the valve head 4 is positioned in the shell interface pipe 1-6.

The elastic valve core 5 can be selected as an elastomer formed by injection molding of the existing elastic polymer material, and after the air bag is inflated and the pressure indicating device is assembled, the elastic valve core 5 is pressed between the inner base 6 and the shrinkage part 1-5 to elastically deform so as to seal the air passage. When inflation is needed, an external inflation device (such as an injector) is connected with the shell interface tube 1-6, when inflation operation is performed, the external pressure is increased, the elastic valve core 5 deforms, the valve head 4 moves inwards, the air passage is opened, and when the inflation operation is stopped, the air passage is closed under the dual functions of internal air pressure and the self elasticity of the elastic valve core 5. When the pressure release is needed, the elastic valve core 5 is forced to deform by pressing the valve head 4 to move inwards, and the air passage is opened.

The assembly method comprises the following steps:

the inner base 6, the elastic connecting piece 7 and the indicating cursor 8 are combined to form a pressure indicating assembly, the front part of the indicating cursor 8 is connected with the sealing soft bag sleeve 9 in a sealing way, the front end of the sealing soft bag sleeve 9 is connected with the air guide valve 10 in a sealing way, and the elastic valve core 5 and the valve head 4 are arranged at the rear part of the inner base 6 to form an assembly shown in fig. 6; the assembly is put into the shell 1, so that the inner base 6 and the shell 1 are combined into a whole; the air guide valve 10 is clamped and connected with the front end of the shell 1 to form a whole; the pressure sensing bag sleeve 3 is buckled outside the air guide valve 10, and the front part of the shell 1 is inserted into the rear part of the pressure sensing bag sleeve 3 and is connected in a sealing way.

The using method comprises the following steps:

the air bag is connected with the device by adopting a hose, specifically, one end of the hose is connected to the air bag, and the other end is connected to a bag sleeve pipe 3-3 at the front part of the pressure sensing bag sleeve 3; when inflation is needed, the front end of the injector is inserted into the shell interface tube 1-6 of the device after the injector is adopted to extract air, the piston of the injector is pushed to force the internal air to be injected into the device, after the external pressure is increased, the one-way air valve structure is opened, the air passage is opened, the injected air flows along the space outside the sealed soft bag sleeve 9, is discharged through the bag sleeve tube 3-3 of the pressure sensing bag sleeve 3 after passing through the second air flow passage of the air guide valve 10, and is injected into the air bag along the hose, and the air bag is gradually inflated; when the inflation is stopped, air pressure balance is built in, and the pressure built in the air bag and the atmospheric pressure are in pressure difference, so that the pressure indication assembly performs adaptive telescopic action until the pressure is in a balanced state, at the moment, the current bag pressure condition can be read through the transparent window 1-4, and the bag pressure is enabled to be in a green area of the indication mark 2 through continuous inflation or proper deflation;

the medical staff can subjectively sense the capsule pressure (instead of relying on the pressure indication assembly only) by pinching the pressure sensing capsule 3 (such as pinching the elastic capsule 3-2 of the pressure sensing capsule 3 by thumb and forefinger), and properly adjust the capsule pressure according to the operation experience grasped by the medical staff; when pressure relief and deflation are needed, the valve head 4 is pressed inwards by sharp objects, the elastic valve core 5 deforms to enable the air passage to be opened, and air in the air bag is discharged outwards through the hose and the device.

Claims

1. An airbag inflation and pressure indication device is characterized in that: the pressure sensing assembly with the interface tube is connected to the front part of the shell in a sealing way, and the pressure indicating assembly is arranged in the shell; the front end of the shell is provided with a gas guide valve, a sealing soft bag sleeve is arranged between the pressure indicating assembly and the gas guide valve, the inner space of the sealing soft bag sleeve is communicated with the outside atmosphere through a first air flow channel arranged on the gas guide valve and a vent hole arranged on the pressure sensing assembly, the outer space of the sealing soft bag sleeve is communicated with an interface tube of the pressure sensing assembly through a second air flow channel arranged on the gas guide valve, and the pressure indicating assembly performs elastic expansion and contraction action under the pressure difference effect of the two spaces; a one-way air valve structure is arranged between the shell and the rear part of the pressure indicating assembly.

2. The airbag inflation and pressure indicating device of claim 1, wherein: the pressure indicating assembly comprises an inner base, an indicating cursor, an elastic connecting piece, a sealing soft bag sleeve and an air guiding valve, wherein the inner base is installed and fixed inside the shell, the indicating cursor moving along the axial direction is installed on the inner base, the elastic connecting piece is installed between the inner base and the indicating cursor, and the sealing soft bag sleeve is installed between the indicating cursor and the air guiding valve.

3. The airbag inflation and pressure indicating device of claim 2, wherein: the inside base includes the joint pterygoid lamina of being connected with the block structure block that sets up in the shell, pipe box behind the rear portion of joint pterygoid lamina is equipped with the base, the front portion is equipped with the base front shroud, the lateral part of pipe box is equipped with base side window before the base, the root is equipped with the base draw-in groove, the rear end block of elastic connection spare is connected in the base draw-in groove.

4. The airbag inflation and pressure indicating device of claim 3, wherein: the indicating cursor comprises a cursor front boss, a cursor pipe sleeve is arranged at the rear part of the cursor front boss, a cursor side window is arranged at the side part of the cursor pipe sleeve, a cursor clamping groove is arranged at the root part of the cursor pipe sleeve, and the front end of the elastic connecting piece is clamped and connected in the cursor clamping groove.

5. The airbag inflation and pressure indicating apparatus of claim 4, wherein: the side wall of the base front pipe sleeve of the inner base is provided with an axial strip-shaped sliding groove, the inner wall of the cursor pipe sleeve for indicating the cursor is provided with an axial strip-shaped sliding block, the base front pipe sleeve is inserted into the cursor pipe sleeve, and the strip-shaped sliding block is positioned in the strip-shaped sliding groove.

6. The airbag inflation and pressure indicating apparatus of claim 5, wherein: an indication board is arranged on the outer wall of the rear end of the cursor pipe sleeve, a transparent window is arranged on the side part of the middle part of the shell, and an indication mark which is matched with the indication board to realize pressure condition indication is arranged on the transparent window.

7. The airbag inflation and pressure indicating apparatus of claim 6, wherein: the unidirectional air valve structure comprises an elastic valve core which is positioned in a base rear pipe sleeve of the inner base, a valve head is arranged at the outer end of the elastic valve core, a shrinkage part is arranged at the rear part of the shell, the elastic valve core is positioned in the shrinkage part, and a shell interface pipe is arranged behind the shrinkage part.

8. The airbag inflation and pressure indicating device of claim 1, wherein: the pressure sensing component is a pressure sensing bag sleeve, the pressure sensing bag sleeve comprises an outer sleeve with an open rear part, the air guide valve is coated in the outer sleeve, a bag sleeve pipe serving as the interface pipe and a bag sleeve air hole serving as the air hole are arranged at the front part of the outer sleeve, and an elastic bag for sensing the internal pressure by pressing is further arranged at the side part of the outer sleeve.

9. The airbag inflation and pressure indicating apparatus of claim 8, wherein: the air guide valve comprises a valve body, and valve air holes which are axially communicated are formed in the valve body and form the first air flow channel; the valve body is also provided with a transverse through communicating air hole and an axial through air hole, the air hole is communicated with the communicating air hole, the front center of the valve body is also provided with a center hole communicated with the communicating air hole, and the center hole, the communicating air hole and the air hole form the second air flow channel.

10. The airbag inflation and pressure indicating apparatus of claim 9, wherein: the two sides of the rear part of the valve body of the air guide valve are provided with clamping hooks, and corresponding positions on the inner wall of the front part of the shell are provided with clamping grooves matched with the clamping hooks.