Flushing gun liquid pressurizing device

Abstract

The utility model provides a liquid pressurizing device for a flushing gun. The liquid pressurizing device comprises an extrusion sleeve and an air source. The extrusion sleeve is of a sleeve-shaped structure with an opening in one end, a variable cavity capable of storing objects is formed in the sleeve-shaped structure, the inner wall of the extrusion sleeve can expand after gas is introduced, the size of the variable cavity is reduced, and then the objects stored in the variable cavity are extruded; the air source is connected with the extrusion sleeve so that the air source can inflate and expand the inner wall of the extrusion sleeve. According to the flushing gun liquid pressurizing device, the liquid bag is arranged in the variable cavity of the extrusion sleeve, the inner wall of the extrusion sleeve can expand after gas is introduced, the size of the variable cavity is reduced, then the liquid bag stored in the variable cavity 101 is extruded, and the spraying pressure of the flushing gun is increased. Compared with the prior art, the flushing gun liquid pressurizing device can replace manual operation to extrude the liquid bag, and the situation that the complexity and risk of an operation are increased due to the fact that the liquid bag is extruded manually is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a liquid pressurizing device for a flushing gun. Background Art

[0002] In current surgical procedures, in order to prevent the accumulation of blood clots, tissue fragments and other substances in the surgical area, a flushing gun can be used to perform pulse flushing of the surgical site, which helps to reduce the infection rate. The flushing gun is usually composed of a flushing liquid storage bag and a flushing gun head. The flushing gun head can draw the flushing liquid in the flushing liquid storage bag and discharge it after pressurization to flush the surgical area.

[0003] However, during the flushing of the surgical site with the flushing gun, we encountered a problem. Specifically, the liquid pressure connected to the flushing gun was obviously too low and failed to achieve the expected flushing effect. This insufficient pressure caused the flushing gun to be unable to effectively push water into the flushing cavity when working automatically, thus affecting the progress and efficiency of the operation. In order to solve this problem, we had to resort to manual pressurization to increase the pressure of the flushing gun through manual operation so that it could smoothly deliver water into the flushing cavity. Although this manual pressurization operation can temporarily solve the problem, it undoubtedly increases the complexity and risk of the operation, and also reduces the efficiency and comfort of the operation. Utility Model Content

[0004] In view of this, the purpose of the utility model is to overcome the deficiencies in the prior art and provide a flushing gun liquid pressurizing device.

[0005] The utility model provides the following technical solutions:

[0006] The embodiment of the present application provides a flushing gun liquid pressurizing device, comprising an extrusion sleeve and an air source. The extrusion sleeve is a sleeve-shaped structure with an opening at one end, and a variable chamber capable of storing objects is formed inside the sleeve-shaped structure. The inner wall of the extrusion sleeve can expand after gas is introduced, so that the volume of the variable chamber is reduced, thereby squeezing the object stored in the variable chamber; the air source is connected to the extrusion sleeve so that the air source inflates the inner wall of the extrusion sleeve.

[0007] In one embodiment, the extrusion sleeve includes an airbag body and an airbag unit. The airbag body is surrounded by a sleeve-like structure with an opening at one end; the airbag unit is arranged on the inner wall of the sleeve-like structure formed by the airbag body, and the airbag unit is connected to the air source so that the air source can pass gas into the airbag unit, thereby expanding the airbag unit.

[0008] In one embodiment, the airbag unit includes N sub-airbags, the N sub-airbags are connected to an air source, and the N sub-airbags are arranged in sequence on the inner wall of the airbag body along a first direction, and the first direction is a direction from the bottom of the airbag body to the opening of the airbag body; the N sub-airbags are respectively the first sub-airbag, the second sub-airbag,..., the Nth sub-airbag along the first direction; wherein N≥3.

[0009] In one embodiment, the sub-airbag is an annular balloon structure.

[0010] In one embodiment, the flushing gun liquid pressurizing device further comprises an air pressure control component, and the air pressure control component is used to ventilate and expand the N sub-airbags in sequence along the first direction.

[0011] In one embodiment, the air pressure control component includes a pressure relief valve, and the number of the pressure relief valves is (N-1). The pressure relief valve is set between adjacent sub-airbags, the air inlet of the pressure relief valve is connected to the Mth sub-airbag, and the air outlet of the pressure relief valve is connected to the M+1th sub-airbag, wherein the Mth sub-airbag and the M+1th sub-airbag are sequentially arranged along the first direction, 1≤M<M+1≤N; initially, the pressure relief valve is closed, and when the air source passes gas into the Mth sub-airbag and makes the air pressure in the Mth sub-airbag greater than the first preset air pressure, the pressure relief valve is turned on, so that the gas in the Mth sub-airbag enters the M+1th sub-airbag through the pressure relief valve, thereby realizing the sequential expansion of multiple sub-airbags along the first direction.

[0012] In one embodiment, the air pressure control component includes a first connecting block, a second connecting block and a one-way valve. The first connecting block is provided with a gas channel, and the air inlet of the gas channel is connected to the gas source; the second connecting block has N air outlets, and the N air outlets are respectively connected to the first air outlet of the first sub-airbag, the second air outlet of the second sub-airbag, ..., and the Nth air outlet of the Nth sub-airbag; the first connecting block is movably mounted on the second connecting block, and the air outlet of the gas channel is connected to one of the air outlets on the second connecting block. When the first connecting block is displaced relative to the second connecting block, the gas channel can be switched to connect to different air outlets, thereby allowing the gas source to pass gas to different sub-airbags through the first connecting block and the second connecting block; the one-way valve is used to limit the gas in the sub-airbag from being discharged to the air outlet.

[0013] In one embodiment, the airbag body is made of a non-extensible flexible material.

[0014] In one embodiment, the flushing gun liquid pressurizing device further comprises a blocking airbag, which is mounted on the inner wall of the extrusion sleeve opening and is inflated to block the extrusion sleeve opening.

[0015] In one embodiment, the air source comprises an air pressure pump, which is connected to the extrusion sleeve and can inflate the inner wall of the extrusion sleeve.

[0016] In one embodiment, the air source comprises a pedal airbag, the pedal airbag is connected to the extrusion sleeve, and the pedal airbag is squeezed to inflate the inner wall of the extrusion sleeve.

[0017] The embodiments of the present utility model have the following advantages:

[0018] A liquid bag is arranged in the variable chamber of the extrusion sleeve. When gas is introduced into the inner wall of the extrusion sleeve, the liquid bag can be expanded, so that the volume of the variable chamber is reduced, thereby squeezing the liquid bag stored in the variable chamber 101, and increasing the injection pressure of the flushing gun. Compared with the prior art, the flushing gun liquid pressurizing device provided by the present application can replace manual squeezing of the liquid bag, avoiding the increase in complexity and risk of the operation caused by manual squeezing of the liquid bag.

[0019] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 A structural schematic diagram showing a partial structure of one embodiment of a flushing gun liquid pressurizing device provided by an embodiment of the present application from one perspective;

[0022] Figure 2 A structural schematic diagram showing a part of the structure of one embodiment of a flushing gun liquid pressurizing device provided by an embodiment of the present application from two perspectives;

[0023] Figure 3 Shows Figure 2 Sectional view along AA direction;

[0024] Figure 4A structural schematic diagram showing a part of the structure of another embodiment of a flushing gun liquid pressurizing device provided by an embodiment of the present application from three perspectives;

[0025] Figure 5 A schematic structural diagram showing a part of the structure of one embodiment of a flushing gun liquid pressurizing device provided by an embodiment of the present application from four perspectives;

[0026] Figure 6 Shows Figure 5 Cross-sectional view along the BB axis.

[0027] Description of main component symbols:

[0028] 100-extrusion sleeve; 101-variable chamber;

[0029] 110-Air bag body;

[0030] 120-airbag unit; 122-sub-airbag;

[0031] 200-occluded airbag;

[0032] 300-gas pressure control assembly; 310-first connection block; 312-gas channel;

[0033] 320 - second connecting block; 322 - air outlet nozzle. DETAILED DESCRIPTION

[0034] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0035] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. In contrast, when an element is referred to as being "directly on" another element, there is no intermediate element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0036] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of the template herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0039] like Figures 1 to 6 As shown, an embodiment of the present application provides a flushing gun liquid pressurizing device for squeezing a liquid bag of the flushing gun. The flushing gun is connected to the liquid bag. The flushing gun draws out the flushing liquid in the liquid bag and pressurizes it before spraying it onto the surgical site. However, the flushing gun in the prior art has a relatively low pressure, and the liquid bag needs to be squeezed manually to pressurize the flushing gun.

[0040] The liquid pressurizing device of the flushing gun includes an extrusion sleeve 100 and an air source.

[0041] like Figure 1 and Figure 2 As shown, the extrusion sleeve 100 is a sleeve-like structure with an opening at one end, and a variable chamber 101 capable of storing objects is formed inside the sleeve-like structure. The variable chamber 101 is used to store liquid bags. After gas is passed into the inner wall of the extrusion sleeve 100, it can expand, so that the volume of the variable chamber 101 is reduced, and then the liquid bag stored in the variable chamber 101 is squeezed, thereby increasing the spray pressure of the flushing gun and improving the flushing effect.

[0042] Exemplarily, the gas source can provide compressed gas to the extrusion sleeve 100. The gas source is connected to the extrusion sleeve 100 so that the gas source inflates the inner wall of the extrusion sleeve 100, the volume of the variable chamber 101 decreases, and the liquid bag stored in the variable chamber 101 is squeezed.

[0043] Exemplarily, the gas source is at least one of the following: a tank storing compressed gas, an air pump, or an air bag capable of outputting compressed gas, etc.

[0044] like Figure 3 As shown, in one embodiment, the compression sleeve 100 includes an airbag body 110 and an airbag unit 120 .

[0045] like Figure 3 As shown, the airbag body 110 is a sleeve-like structure with an opening at one end. Exemplarily, the airbag body 110 is a sleeve structure with two ends, one end of the airbag body 110 is blocked, and the other end of the airbag body 110 is open, and the liquid bag can enter the variable chamber 101 through the opening at this end.

[0046] The airbag unit 120 is arranged on the inner wall of the sleeve-shaped structure formed by the airbag body 110. The airbag unit 120 is connected to the air source so that the air source can pass gas into the airbag unit 120, thereby expanding the airbag unit 120 and reducing the volume of the variable chamber 101. The airbag unit 120 expands and squeezes the liquid bag, thereby pressurizing the liquid in the liquid bag, increasing the flushing pressure of the flushing gun, and improving the flushing effect.

[0047] Exemplarily, the airbag unit 120 is fixedly connected to the inner wall of the airbag body 110 by gluing, sewing or clamping.

[0048] like Figure 3 As shown, in one embodiment, the sub-airbag 122 is an annular balloon structure.

[0049] In one embodiment, the airbag unit 120 includes N sub-airbags 122, which are connected to an air source that can provide compressed gas to the N sub-airbags 122. The N sub-airbags 122 are arranged in sequence on the inner wall of the airbag body 110 along a first direction, and the first direction is the direction from the bottom of the airbag body 110 to the opening of the airbag body 110.

[0050] The N sub-airbags 122 are respectively a first sub-airbag, a second sub-airbag, ..., an Nth sub-airbag along the first direction; wherein N≥3.

[0051] like Figure 3 As shown, in one embodiment, N=3, the three sub-airbags 122 are respectively the first sub-airbag, the second sub-airbag and the third sub-airbag, the first sub-airbag is close to the bottom of the airbag body 110, the third sub-airbag is close to the opening of the airbag body 110, and the second sub-airbag is located between the first sub-airbag and the third sub-airbag.

[0052] In another embodiment, N=4, the four sub-airbags 122 are respectively the first sub-airbag, the second sub-airbag, the third sub-airbag and the fourth sub-airbag, the first sub-airbag is close to the bottom of the airbag body 110, and the fourth sub-airbag is close to the opening of the airbag body 110. In another embodiment, N=5.

[0053] like Figures 4 to 6 As shown, in one embodiment, the flushing gun liquid pressurizing device further includes an air pressure control component 300, and the air pressure control component 300 is used to ventilate and expand the N sub-airbags 122 in sequence along the first direction.

[0054] In one embodiment, the air pressure control assembly 300 includes a pressure relief valve (not shown in the drawings).

[0055] The number of pressure relief valves is N-1. If three sub-airbags 122 are provided, two pressure relief valves are provided. If five sub-airbags 122 are provided, four pressure relief valves are provided.

[0056] The pressure relief valve is arranged between adjacent sub-airbags 122, and adjacent sub-airbags 122 are connected through the pressure relief valve. The air inlet of the pressure relief valve is connected to the Mth sub-airbag, and the air outlet of the pressure relief valve is connected to the M+1th sub-airbag, wherein the Mth sub-airbag and the M+1th sub-airbag are arranged in sequence along the first direction, 1≤M<M+1≤N.

[0057] Initially, the pressure relief valve is closed. When the gas source passes gas into the Mth sub-airbag and makes the air pressure in the Mth sub-airbag greater than the first preset air pressure, the pressure relief valve is turned on, allowing the gas in the Mth sub-airbag to enter the M+1th sub-airbag through the pressure relief valve, thereby realizing the sequential expansion of multiple sub-airbags 122 along the first direction.

[0058] Exemplarily, the first preset air pressure is set according to actual engineering needs, and is not limited here. For example, the first preset air pressure P can be 1.5 times the atmospheric pressure or 2 times the atmospheric pressure.

[0059] For example, Figure 3 As shown, assuming that three sub-airbags 122 are provided, that is, N=3, two pressure relief valves are provided, and the three sub-airbags 122 are respectively named as the first sub-airbag, the second sub-airbag and the third sub-airbag, which are arranged in sequence along the first direction, the first sub-airbag is closer to the bottom of the airbag body 110 than the second sub-airbag and the third sub-airbag, the second sub-airbag is located between the first sub-airbag and the third sub-airbag, and the third sub-airbag is closer to the opening of the airbag body 110 than the first sub-airbag and the second sub-airbag. The two pressure relief valves are respectively named as the first pressure relief valve and the second pressure relief valve, the first pressure relief valve connects the first sub-airbag and the second sub-airbag, and the second pressure relief valve connects the second sub-airbag and the third sub-airbag.

[0060] The gas source is connected to the first sub-airbag. Initially, the first pressure relief valve and the second pressure relief valve are closed, and the gas does not flow between the first sub-airbag and the second sub-airbag, while the gas flows between the second sub-airbag and the third sub-airbag. The gas source introduces compressed gas into the first sub-airbag, so that the air pressure in the first sub-airbag increases, the first sub-airbag expands, and the volume of the variable chamber 101 decreases. When the air pressure in the first sub-airbag increases to the first preset air pressure, the first pressure relief valve opens, so that the compressed gas in the first sub-airbag enters the second sub-airbag through the first pressure relief valve, thereby increasing the air pressure in the second sub-airbag, expanding the second sub-airbag, and further reducing the volume of the variable chamber 101; the gas source continuously inputs compressed gas into the first sub-airbag and the second sub-airbag. When the air pressure in the second sub-airbag reaches the first preset air pressure, the second pressure relief valve opens, and the compressed gas in the second sub-airbag enters the third sub-airbag through the second pressure relief valve, so that the third sub-airbag expands, and the volume of the variable chamber 101 further decreases.

[0061] The first sub-airbag, the second sub-airbag and the third sub-airbag gradually expand in sequence, so that the volume of the variable chamber 101 gradually decreases from the bottom of the airbag body 110 to the opening, thereby gradually squeezing the liquid bag from the bottom to the opening and reducing the residual amount of flushing liquid in the liquid bag.

[0062] like Figures 4 to 6 As shown, in one embodiment, the technical solution of the pressure relief valve in the above embodiment can also be replaced by the following technical solution:

[0063] The air pressure control assembly 300 includes a first connection block 310 , a second connection block 320 , and a one-way valve (not shown in the drawings).

[0064] like Figure 5 As shown, the second connection block 320 has N air outlet nozzles 322. The N air outlet nozzles 322 are respectively connected to the first sub-airbag, the second air outlet nozzle connected to the second sub-airbag, ..., the Nth air outlet nozzle connected to the Nth sub-airbag. Exemplarily, three sub-airbags 122 are provided; then three air outlet nozzles 322 are provided, and the three air outlet nozzles 322 are respectively the first air outlet nozzle, the second air outlet nozzle and the third air outlet nozzle 322, the first air outlet nozzle is connected to the first sub-airbag, the second air outlet nozzle is connected to the second sub-airbag, and the third air outlet nozzle 322 is connected to the third sub-airbag. In another embodiment, five air outlet nozzles are provided. In another embodiment, six air outlet nozzles are provided.

[0065] The first connection block 310 is movably mounted on the second connection block 320. For example, Figure 6 As shown, N air outlet nozzles are distributed circumferentially around the second connection block on the second connection block, and the first connection block 310 is rotatably mounted on the second connection block 320. In another embodiment, the N air outlet nozzles are arranged on the second connection block along a straight line, and the first connection block is slidably mounted on the second connection block along a straight line.

[0066] The first connection block 310 is provided with a gas channel 312, and the gas inlet of the gas channel 312 is connected to the gas source. The gas outlet of the gas channel 312 is connected to one of the gas outlet nozzles 322 on the second connection block 320. The gas channel 312 can move with the first connection block 310, and the plurality of gas outlet nozzles 322 are located on the moving path of the gas channel 312; the first connection block 310 moves so that the gas channel 312 is connected to different gas outlet nozzles 322.

[0067] When the first connecting block 310 is displaced relative to the second connecting block 320 , the gas channel 312 can be switched to connect to different gas outlet nozzles 322 , so that the gas source can supply gas to different sub-airbags 122 through the first connecting block 310 and the second connecting block 320 .

[0068] The one-way valve is used to limit the gas in the sub-airbag 122 from being discharged to the air outlet nozzle 322. The number of one-way valves provided matches the number of sub-airbags 122 provided. Exemplarily, the one-way valve is provided at the opening of the air outlet nozzle 322, and the one-way valve connects the air outlet nozzle 322 and the sub-airbag 122. In another embodiment, the one-way valve is provided at the air inlet of the sub-airbag 122, and the one-way valve connects the air outlet nozzle 322 and the sub-airbag 122. In another embodiment, the sub-airbag 122 is connected to the air outlet nozzle 322 through a pipe, and the one-way valve is provided on the pipe.

[0069] For example, Figure 6As shown, the first connecting block 310 is rotated, and the gas channel 312 rotates along with the first connecting block 310, so that the outlet of the gas channel 312 can be connected to different air outlet nozzles 322. Initially, the outlet of the gas channel 312 is connected to the first air outlet nozzle, and the gas source delivers compressed gas to the first sub-airbag through the gas channel 312 and the first air outlet nozzle, so that the first sub-airbag is inflated; after completing the delivery of compressed gas to the first sub-airbag, the first connecting block 310 is rotated, and the gas channel 312 rotates along with the first connecting block 310, so that the outlet of the gas channel 312 is disconnected from the first air outlet nozzle, and the outlet of the gas channel 312 is connected to the second air outlet nozzle, and the gas source delivers compressed gas to the second sub-airbag through the gas channel 312 and the second air outlet nozzle, so that the second sub-airbag is inflated. After the compressed gas is delivered to the second sub-airbag, the first connecting block 310 is rotated, and the gas channel 312 rotates with the first connecting block 310, and the gas channel 312 is disconnected from the second air outlet nozzle, so that the gas channel 312 is connected to the third air outlet nozzle 322, and the gas source can deliver compressed gas to the third sub-airbag through the gas channel 312 and the third air outlet nozzle 322, so that the third sub-airbag expands. By rotating the first connecting block 310, the gas channel 312 is connected to different air outlet nozzles 322 in sequence, so that the sub-airbags 122 are expanded in sequence along the first direction, so that the volume of the variable chamber 101 is gradually reduced from the bottom of the airbag body 110 to the opening, so that the liquid bag can be gradually squeezed from the bottom to the opening, and the residual amount of flushing liquid in the liquid bag can be reduced.

[0070] Exemplarily, the rotation of the first connecting block 310 can be completed by motor drive or manual drive, which is not limited here.

[0071] In one embodiment, the airbag body 110 is made of a flexible material without ductility. Exemplarily, the flexible material without ductility includes but is not limited to one of the following: PU (polyurethane), polyester, nylon, silk, and the like.

[0072] like Figures 1 to 3 As shown, in one embodiment, the flushing gun liquid pressurizing device also includes a blocking airbag 200, which is installed on the inner wall of the opening of the extrusion sleeve 100. The blocking airbag 200 is expanded to block the opening of the extrusion sleeve 100 to prevent the liquid bag from slipping out of the variable chamber 101.

[0073] like Figure 1 As shown, in one embodiment, the air source includes an air pressure pump, which is connected to the sub-airbag 122 of the extrusion sleeve 100, and the air pressure pump can inflate the sub-airbag 122. The air pressure pump can adjust the pressure of the delivered air pressure.

[0074] like Figure 1As shown, in one embodiment, the air source includes a pedal airbag, which is connected to the sub-airbag 122 of the squeezing sleeve 100 , and the pedal airbag is squeezed to inflate the sub-airbag 122 .

[0075] In one embodiment, an exhaust valve is provided on the sub-airbag 122. Initially, the exhaust valve is closed, and compressed gas can be stored inside the sub-airbag 122. After use, the exhaust valve is opened to discharge the gas in the sub-airbag 122.

[0076] In all examples shown and described herein, any specific values ​​should be interpreted as merely exemplary and not as limiting, and thus other examples of the exemplary embodiments may have different values.

[0077] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0078] 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 present invention. 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 flushing gun liquid pressurizing device, characterized in that: include: A squeezing sleeve (100), the squeezing sleeve (100) being a sleeve-shaped structure with an opening at one end, a variable chamber (101) capable of storing an object being formed inside the sleeve-shaped structure, and the inner wall of the squeezing sleeve (100) being expanded after gas is introduced, thereby reducing the volume of the variable chamber (101), thereby squeezing the object stored in the variable chamber (101); An air source is connected to the extrusion sleeve (100) so that the air source inflates the inner wall of the extrusion sleeve (100).

2. The flushing gun liquid pressurizing device according to claim 1, characterized in that: The extrusion sleeve (100) comprises: An air bag body (110), the air bag body (110) being surrounded by the sleeve-like structure with an opening at one end; An airbag unit (120), wherein the airbag unit (120) is arranged on the inner wall of the sleeve-shaped structure formed by the airbag body (110), and the airbag unit (120) is connected to the gas source so that the gas source can pass gas into the airbag unit (120), thereby causing the airbag unit (120) to expand.

3. The flushing gun liquid pressurizing device according to claim 2, characterized in that: The airbag unit (120) comprises N sub-airbags (122), the N sub-airbags (122) are connected to an air source, and the N sub-airbags (122) are arranged in sequence on the inner wall of the airbag body (110) along a first direction, wherein the first direction is a direction from the bottom of the airbag body (110) to the opening of the airbag body (110); The N sub-airbags (122) are respectively a first sub-airbag, a second sub-airbag, ..., an Nth sub-airbag along the first direction, wherein N≥3.

4. The flushing gun liquid pressurizing device according to claim 3, characterized in that: The sub-airbag (122) is an annular bag structure.

5. The flushing gun liquid pressurizing device according to claim 3, characterized in that: Also includes: An air pressure control component (300) is used to allow the N sub-airbags (122) to be ventilated and expanded in sequence along the first direction.

6. The flushing gun liquid pressurizing device according to claim 5, characterized in that: The air pressure control assembly (300) comprises: A pressure relief valve, wherein the number of the pressure relief valves is (N-1), the pressure relief valves are arranged between adjacent sub-airbags (122), an air inlet of the pressure relief valve is connected to the Mth sub-airbag, and an air outlet of the pressure relief valve is connected to the M+1th sub-airbag, wherein the Mth sub-airbag and the M+1th sub-airbag are arranged in sequence along the first direction, 1≤M<M+1≤N; Initially, the pressure relief valve is closed. When the gas source passes gas into the Mth sub-airbag and the air pressure in the Mth sub-airbag is greater than the first preset air pressure, the pressure relief valve is opened, so that the gas in the Mth sub-airbag enters the M+1th sub-airbag through the pressure relief valve, thereby realizing the expansion of multiple sub-airbags (122) in sequence along the first direction.

7. The flushing gun liquid pressurizing device according to claim 5, characterized in that: The air pressure control assembly (300) comprises: A first connecting block (310), wherein the first connecting block (310) is provided with a gas channel (312), and a gas inlet of the gas channel (312) is connected to the gas source; A second connection block (320), wherein the second connection block (320) has N air outlets (322), wherein the N air outlets (322) are respectively a first air outlet connected to the first sub-airbag, a second air outlet connected to the second sub-airbag, ..., an Nth air outlet connected to the Nth sub-airbag; The first connecting block (310) is movably mounted on the second connecting block (320); the gas outlet of the gas channel (312) is connected to one of the gas outlet nozzles (322) on the second connecting block (320); when the first connecting block (310) is displaced relative to the second connecting block (320), the gas channel (312) can be switched to connect to a different gas outlet nozzle (322), thereby allowing the gas source to pass gas into different sub-airbags (122) through the first connecting block (310) and the second connecting block (320); A one-way valve is used to limit the gas in the sub-airbag (122) from being discharged to the air outlet nozzle (322).

8. The flushing gun liquid pressurizing device according to claim 2, characterized in that: The airbag body (110) is made of a flexible material without ductility.

9. The flushing gun liquid pressurizing device according to any one of claims 1 to 8, characterized in that: Also includes: A blocking airbag (200) is installed on the inner wall of the opening of the extrusion sleeve (100), and the blocking airbag (200) is inflated to block the opening of the extrusion sleeve (100).

10. The flushing gun liquid pressurizing device according to claim 9, characterized in that: The air source comprises an air pressure pump, the air pressure pump is connected to the extrusion sleeve (100), and the air pressure pump is capable of inflating the inner wall of the extrusion sleeve (100); And / or, the air source comprises a stepped airbag, the stepped airbag is connected to the extrusion sleeve (100), and the stepped airbag is squeezed to inflate the inner wall of the extrusion sleeve (100).

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