Portable ascites aspirator for cirrhosis

Abstract

The invention discloses a portable ascites aspirator for cirrhosis, and relates to the technical field of ascites aspirates.The portable ascites aspirator for cirrhosis comprises a shell, a connecting pipe and a top plate; the device further comprises a suction assembly. The suction assembly comprises a water storage bag, a cleaning disc, a spray head, a guide rod, a driving motor, a cleaning pump, a connecting pipe, a suction bottle and a moving rod; the suction bottle is fixed in the shell and used for storing pumped liquid, the water storage bag is located at the top of the suction bottle, liquid used for cleaning the suction bottle is stored in the water storage bag, and the cleaning pump is fixed in the water storage bag; the nozzle is fixed at the edge of the cleaning disc, the cleaning disc is a hollow circular disc and is connected to the guide rod in a sliding manner, the guide rod is fixed in the suction bottle, and the cleaning disc is spirally connected to the moving rod; the water storage bag is an annular bag, and the connecting pipe penetrates through a round hole in the center of the water storage bag and extends into the suction bottle. The suction device can be cleaned in time, cross contamination is avoided, the suction device is cleaned under the condition that the suction device is not disassembled, and then the service life of the suction device is prolonged.

Description

Technical Field

[0001] This invention relates to the field of ascites aspiration devices, and more particularly to a portable ascites aspiration device for liver cirrhosis. Background Technology

[0002] In clinical practice, patients with liver disease often develop ascites. Ascites aspiration is an effective treatment method. Current methods for ascites aspiration involve using an ascites aspirator or syringe to suction the fluid. A puncture needle is inserted into the abdominal cavity, and then the fluid is aspirated using the aspirator or syringe.

[0003] After use, liquid residue is easily left on the inner wall of the suction bottle of traditional suction devices. If it is not cleaned in time, it will not only affect the subsequent suction effect, but may also breed bacteria or cause cross-contamination. The existing cleaning methods are mostly manual disassembly and cleaning, which is cumbersome and difficult to ensure thorough cleaning. At the same time, frequent disassembly will also reduce the service life of the equipment. Summary of the Invention

[0004] This application provides a portable ascites aspirator for liver cirrhosis, which solves the problem that the existing cleaning methods mostly involve manual disassembly and cleaning, which is cumbersome and difficult to ensure thorough cleaning. At the same time, frequent disassembly will also reduce the service life of the equipment. This invention enables timely cleaning of the aspiration device, avoids cross-contamination, and cleans the aspiration device without disassembly, thereby extending the service life of the aspirator.

[0005] This application provides a portable ascites aspirator for liver cirrhosis, including a shell, a connecting tube, and a top plate. The top plate is detachably fixed to the top of the shell, and the connecting tube is fixed to the top plate. It also includes a suction component; The suction assembly includes a water storage bladder, a cleaning disc, a nozzle, a guide rod, a drive motor, a cleaning pump, a connecting pipe, a suction bottle, and a moving rod; The suction bottle is fixed inside the outer shell and is used to store the extracted liquid. The water storage bladder is located at the top of the suction bottle and contains liquid for cleaning the suction bottle. The cleaning pump is fixed inside the water storage bladder. The nozzle is fixed to the edge of the cleaning disc, which is a hollow circular disc, and multiple nozzles are provided. The nozzle outlet faces the inner wall of the suction bottle. The cleaning disc is slidably connected to the guide rod, which is vertically fixed inside the suction bottle. The guide rod is used to guide the cleaning disc to move up and down inside the suction bottle. The cleaning disc is spirally connected to the moving rod. The water storage bladder is an annular bladder, and the connecting tube passes through the circular hole in the center of the water storage bladder and extends into the suction bottle.

[0006] Further, the top plate top is fixed with a water injection pipe communicated with the water storage bag, the water injection pipe is used for supplementing water to the water storage bag, the cleaning liquid stored in the water storage bag is physiological saline; the water injection pipe is made of stainless steel, one end vertically penetrates the top plate and is welded and sealed to communicate with the water storage bag, the other end extends to 10-15 cm above the top plate and is provided with a threaded cap.

[0007] Further, the bottom of the water storage bag is fixed with a hard polycarbonate material partition plate, the thickness of the partition plate is 3-5 mm, the suction bottle is fixed at the bottom of the partition plate, the partition plate separates the water storage bag from the suction bottle, and a sealing gasket is arranged at the flange connection position between the partition plate and the top of the suction bottle; the water storage bag is an elastic silica gel bag.

[0008] Further, the suction bottle is in a cylindrical shape and is made of transparent medical-grade PP (polypropylene) material, the top of the suction bottle is in an open structure and is sealed and connected with the partition plate through a flange, and the bottom of the suction bottle is provided with an interface for connecting a filter; the filter is detachably fixed at the bottom of the shell and is communicated with the suction bottle through a connecting pipe, a plurality of metal filter screens are fixed in the filter for intercepting solids, and the bottom of the filter can be opened to take out the filter screen for cleaning.

[0009] Further, the filter is made of transparent acrylic material, the top of the filter is connected with the bottom interface of the suction bottle through a threaded joint, and a rubber sealing gasket is arranged at the connection position; the filter screen is 3-4 layers of stainless steel filter screens, the mesh size of the filter screens gradually increases from the upper layer to the lower layer, the upper layer is 80 meshes for intercepting large particle impurities, and the lower layer is 200 meshes for intercepting small particle impurities.

[0010] Further, a quick connector is arranged on the bottom end cover of the filter, a medical-grade polyethylene material liquid storage bag is buckled to the quick connector, the liquid storage bag is used for storing filtered liquid, and the liquid storage bag can be replaced by pressing the buckle when the liquid storage bag is full.

[0011] Further, the cleaning disc has a diameter smaller than that of the suction bottle, an annular rubber scraper plate which can be attached to the inner wall of the suction bottle is fixed to the edge of the cleaning disc through buckling, and the spray head is fixed to the upper and lower sides of the scraper plate; the spray head is fixed on the cleaning disc in an inclined manner, an annular water storage cavity with a depth of 3-4 mm and a width of 8-10 mm is formed in the cleaning disc, and the connecting pipe includes a cleaning connecting pipe, one end of the cleaning connecting pipe is in sealed communication with the water storage cavity, and the water storage cavity is communicated with the spray head through a flow guide hole to uniformly distribute the liquid.

[0012] Further, a winding disc is fixed to the bottom of the partition plate, the cleaning connecting pipe is wound on the winding disc, and the winding disc is used for winding and unwinding the cleaning connecting pipe when the cleaning disc moves up and down; a rotating ring with a gear ring structure is rotatably connected to the bottom of the partition plate, a gear engaged with the rotating ring is fixed on the rotating shaft of the driving motor, and a moving rod is fixed to the bottom of the rotating ring and rotates with the rotating ring.

[0013] Further, the moving rod is an arc-shaped rod distributed around the connecting pipe, and a thread is arranged on the arc-shaped surface; the guide rod is a stainless steel round rod with a diameter of 8-10 mm, symmetrically fixed in the suction bottle, with the top end welded to the partition plate and the bottom end welded to the bottom bracket of the suction bottle; the cleaning pump is a miniature silent centrifugal pump with a power of 10-15 W, fixed at the center position inside the water storage bag.

[0014] Further, a handle is fixed to the side wall of the shell for convenient taking; when the driving motor is started, the driving gear drives the rotating ring to rotate, the rotating ring drives the moving rod to rotate synchronously, and the cleaning disc is driven to move up and down along the guide rod through the screw nut transmission mechanism.

[0015] The technical scheme provided in the embodiments of the present application has at least the following technical effects or advantages: The cleaning disc moves up and down in the suction bottle, and in the moving process, the spray head on the cleaning disc sprays the liquid in the water storage bag to the inner side wall of the suction bottle, so that the suction bottle is cleaned, the problems of complicated operation and difficult to ensure complete cleaning during manual disassembly and cleaning are solved, the use life of the equipment is reduced due to frequent disassembly, the suction device can be cleaned in time to avoid cross contamination, the suction equipment can be cleaned without disassembly, and the use life of the suction device is prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a whole structure schematic diagram of the portable ascites suction device for liver cirrhosis.

[0017] Figure 2 It is a whole structure schematic diagram of the portable ascites suction device for liver cirrhosis.

[0018] Figure 3 It is a specific structure schematic diagram of the cleaning disc of the portable ascites suction device for liver cirrhosis.

[0019] Figure 4 It is a specific structure schematic diagram of the portable ascites suction device for liver cirrhosis. Figure 1 It is a sectional structure schematic diagram of the portable ascites suction device for liver cirrhosis.

[0020] Figure 5 It is a sectional structure schematic diagram of the cleaning disc of the portable ascites suction device for liver cirrhosis.

[0021] Figure 6 It is a connection relationship structure schematic diagram of the driving motor and the rotating ring of the portable ascites suction device for liver cirrhosis.

[0022] Figure 7 It is a sectional structure schematic diagram of the cleaning ring of the portable ascites suction device for liver cirrhosis.

[0023] Figure 8 This is a schematic diagram of the specific structure of the reel of a portable ascites aspiration device for liver cirrhosis according to the present invention.

[0024] Figure 9 This is a schematic diagram of the connection structure between the moving rod and the suction bottle of a portable ascites aspirator for liver cirrhosis according to the present invention.

[0025] Figure 10 This is a cross-sectional view of the filter structure of a portable ascites aspirator for liver cirrhosis according to the present invention.

[0026] In the diagram: 101, outer casing; 102, handle; 103, water inlet pipe; 104, connecting pipe; 105, top plate; 200. Suction assembly; 201. Water reservoir; 202. Cleaning disc; 203. Nozzle; 204. Scraper; 205. Filter; 206. Guide rod; 207. Baffle; 208. Drive motor; 209. Cleaning pump; 210. Connecting pipe; 211. Suction bottle; 212. Rotating ring; 213. Water storage chamber; 214. Reel; 215. Moving rod; 217. Filter plate. Detailed Implementation

[0027] To facilitate understanding of the present invention, a more complete description of this application will be given below with reference to the accompanying drawings, which illustrate preferred embodiments of the invention. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to enable a more thorough and complete understanding of the disclosure of the present invention.

[0028] It should be noted that the terms "vertical," "horizontal," "up," "down," "left," "right," and similar expressions used in this article are for illustrative purposes only and do not represent the only possible implementation.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to limit the invention; the term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0030] like Figures 1 to 10As shown, this application proposes a portable ascites aspiration device for liver cirrhosis, including a housing 101, a connecting tube 104, and a top plate 105. Aspiration assembly 200 is detachably fixed inside the housing 101, and the top plate 105 is detachably fixed to the top of the housing 101 for easy removal of the aspiration assembly 200 from the housing 101. The connecting tube 104 is fixed to the top plate 105. The device also includes the aspiration assembly 200, which comprises a water reservoir 201, a cleaning disc 202, a nozzle 203, a guide rod 206, a drive motor 208, a cleaning pump 209, a connecting tube 104, an aspiration bottle 211, and a moving rod 215. The aspiration bottle 211 is fixed inside the housing 101 and is used to store the extracted fluid. The water reservoir 201 is located on top of the aspiration bottle 211 and stores fluid for cleaning the aspiration bottle 211. The cleaning pump 209 is fixed to the water reservoir. Inside 201, liquid is sprayed from nozzle 203 into the inner wall of suction bottle 211 by cleaning pump 209; nozzle 203 is fixed to the edge of cleaning disc 202, which is a hollow circular disc, and multiple nozzles 203 are provided, with the nozzle outlet facing the inner wall of suction bottle 211; cleaning disc 202 is slidably connected to guide rod 206, which is vertically fixed inside suction bottle 211 and guides cleaning disc 202 to move up and down inside suction bottle 211; cleaning disc 202 is spirally connected to moving rod 215, and moving rod 215 is driven to rotate by drive motor 208, so that cleaning disc 202 moves up and down inside suction bottle 211, cleaning the inside of suction bottle 211 during the movement of cleaning disc 202; water storage bladder 201 is an annular bladder, and connecting tube 104 passes through the circular hole in the center of water storage bladder 201 and extends into suction bottle 211.

[0031] Preferably, a water injection pipe 103 is fixed to the top of the top plate 105. The water injection pipe 103 is connected to the water storage bladder 201. Water is added to the water storage bladder 201 through the water injection pipe 103. The liquid stored in the water storage bladder 201 for cleaning the suction bottle 211 is physiological saline.

[0032] Preferably, a partition 207 is fixed to the bottom of the water storage bladder 201, and the suction bottle 211 is fixed to the bottom of the partition 207. The partition 207 separates the water storage bladder 201 and the suction bottle 211. The water storage bladder 201 is an elastic silicone capsule.

[0033] Preferably, the suction bottle 211 is a cylindrical tube, the diameter of the cleaning disc 202 is smaller than the diameter of the suction bottle 211, and a scraper 204 is fixed to the edge of the cleaning disc 202 by a snap fastener. The scraper 204 is an annular rubber plate that can fit against the inner wall of the suction bottle 211. During the movement of the cleaning disc 202, stubborn residues attached to the inner wall of the suction bottle 211 can be completely scraped off. The nozzle 203 is fixed on the upper and lower sides of the scraper 204.

[0034] Preferably, the nozzle 203 is fixed at an angle on the cleaning disc 202. The cleaning disc 202 has an annular water storage cavity 213 inside. The depth of the water storage cavity 213 is 3mm to 4mm and the width is 8mm to 10mm. The other end of the cleaning connecting pipe 104 passes through the central hole of the cleaning disc 202 and communicates with the water storage cavity 213. The connection is sealed with a sealing ring to prevent saline leakage. The water storage cavity 213 and the nozzle 203 are connected through a small guide hole to ensure that the saline can be evenly distributed to each nozzle 203.

[0035] Preferably, a winding reel 214 is fixed to the bottom of the partition 207, and the connecting pipe 104 is wound and fixed on the winding reel 214. The winding reel 214 winds up and down the connecting pipe 104 during the up and down movement of the cleaning disc 202.

[0036] Preferably, a handle 102 is fixed to the side wall of the outer shell 101 for easy access to the suction device during use.

[0037] Preferably, the bottom of the suction bottle 211 is connected to a filter 205, and the bottom of the filter 205 may be connected to a liquid storage bag for storing liquid. The extracted liquid is stored through the liquid storage bag, and the filter 205 can filter the extracted liquid.

[0038] Preferably, a rotating ring 212 is rotatably connected to the bottom of the partition 207. The rotating ring 212 is a gear ring. A gear that meshes with the rotating ring 212 is fixed on the shaft of the drive motor 208. The rotating ring 212 is driven to rotate through gear meshing. The moving rod 215 is fixed to the bottom of the rotating ring 212 so that the moving rod 215 can follow the rotating ring 212 to rotate.

[0039] Preferably, the movable rod 215 is a plurality of arc-shaped rods distributed around the connecting pipe 104, and the arc-shaped surface of the movable rod 215 is provided with threads.

[0040] Preferably, the water injection pipe 103 is made of stainless steel, with one end vertically penetrating the top plate 105 and communicating with the inside of the water storage bladder 201, and the connection is sealed by welding; the other end extends to 10cm to 15cm above the top plate 105 and is equipped with a threaded cap. When the saline solution in the water storage bladder 201 is insufficient, the operator only needs to unscrew the threaded cap to replenish the saline solution in the water storage bladder 201 through the water injection pipe 103 without disassembling the top plate 105 and the water storage bladder 201.

[0041] Preferably, the cleaning pump 209 is a miniature silent centrifugal pump with a power of 10W to 15W, and is fixedly installed in the center of the water storage bladder 201.

[0042] Preferably, the guide rod 206 is a stainless steel round rod with a diameter of 8mm to 10mm. There are 4 rods, which are symmetrically fixed on both sides inside the suction bottle 211. The top end of the guide rod is connected to the bottom of the partition plate 207 by welding, and the bottom end is connected to the bracket at the bottom of the suction bottle 211 by welding, so as to ensure that the guide rod 206 is vertical and stable.

[0043] Preferably, the top end of the moving rod 215 is fixedly connected to the bottom of the rotating ring 212 by welding. When the drive motor 208 starts, the drive gear drives the rotating ring 212 to rotate, and the rotating ring 212 in turn drives the moving rod 215 to rotate synchronously. Through the screw and nut transmission mechanism, the cleaning disc 202 is finally moved up and down.

[0044] Preferably, the filter 205 is detachably fixed to the bottom of the housing 101. The filter 205 and the suction bottle 211 are connected by a connecting pipe 104. Multiple filter plates 217 are fixed inside the filter 205. The filter plates 217 are metal meshes. The solids drawn out are intercepted by the filter plates 217. The bottom of the filter 205 can be opened to facilitate the removal and cleaning of the filter plates 217, so that the filter plates 217 can be reused.

[0045] Preferably, the filter plate 217 is a stainless steel filter screen with 3 to 4 layers. The mesh size of the filter screen gradually increases from the top to the bottom. The mesh size of the top layer filter screen is 80 mesh, which is used to intercept larger solid impurities, and the mesh size of the bottom layer filter screen is 200 mesh, which is used to intercept fine solid impurities. Through multi-layer gradient filtration, the filtration effect can be significantly improved, preventing solid impurities from entering the subsequent liquid storage bag or clogging the pipeline.

[0046] Preferably, the filter 205 is made of transparent acrylic material, is cylindrical in shape, and is detachably fixed to the bottom of the housing 101. Its top is connected to the interface at the bottom of the suction bottle 211 through a threaded connector, and a rubber sealing gasket is provided between the two to ensure a sealed connection.

[0047] Preferably, the suction bottle 211 is made of transparent medical-grade PP (polypropylene) material. The transparent material makes it easy for operators to observe the liquid level in the suction bottle 211 in real time and handle the full liquid situation in a timely manner. The top of the suction bottle 211 has an open structure and is sealed to the partition 207 through a flange. The bottom is provided with an interface for communicating with the filter 205.

[0048] Preferably, the partition 207 is made of rigid polycarbonate material with a thickness of 3mm to 5mm, which has high strength and toughness, and a sealing gasket is provided at the flange fixed connection between the partition 207 and the top of the suction bottle 211.

[0049] Preferably, the end cap at the bottom of the filter 205 is equipped with a quick connector for connecting a liquid storage bag. The liquid storage bag is made of medical-grade polyethylene, which has good sealing performance and corrosion resistance. The liquid storage bag and the quick connector are connected by a snap-fit, making connection and disassembly convenient. When the liquid storage bag is full, the operator only needs to press the snap on the quick connector to remove the full liquid storage bag and replace it with a new empty liquid storage bag without stopping the equipment, effectively improving work efficiency.

[0050] In practical use, a portable ascites aspirator according to an embodiment of this application is as follows: Insert the free end of the suction connection tube 104 into the liquid to be suctioned, and start the suction function of the device. Under the negative pressure of the suction pump, the external liquid to be suctioned enters the suction bottle 211 through the suction connection tube 104. After being stored briefly in the suction bottle 211, the liquid slowly flows to the filter 205 under the action of gravity. When the liquid flows through the multi-layer filter plates 217 in the filter 205, solid impurities are intercepted by the filter plates 217. The filtered pure liquid then flows into the storage bag through the end cap at the bottom of the filter 205 for storage. When cleaning the inside of the suction bottle 211, the cleaning pump 209 starts, delivering the saline solution from the reservoir 201 to the reservoir 213 in the cleaning tray 202 via the cleaning connection pipe 104. After being evenly distributed within the reservoir 213, the saline solution enters each nozzle 203 through the guide holes, ultimately being sprayed as a fan-shaped mist onto the inner wall of the suction bottle 211 for initial rinsing. In the second step, the drive motor 208 starts, rotating the drive gear. The drive gear meshes with the internal gear ring of the rotating ring 212, causing... The rotating ring 212 drives the moving rod 215 to rotate synchronously. Since the cleaning disc 202 is spirally connected to the moving rod 215, and under the limiting action of the guide rod 206, the rotation of the moving rod 215 is converted into a slow downward movement of the cleaning disc 202 along the guide rod 206. During the descent of the cleaning disc 202, the scraper 204 on its edge fits tightly against the inner wall of the suction bottle 211, scraping off stubborn residues adhering to the side wall. Simultaneously, the nozzles 203 on both sides of the scraper 204 continuously spray saline solution to clean the scraped residues. Rinsing causes the residue to flow downwards with the water flow. When the cleaning disc 202 descends to the bottom of the suction bottle 211, the controller controls the drive motor 208 to reverse, and the moving rod 215 to rotate in the opposite direction, driving the cleaning disc 202 to slowly rise along the guide rod 206. During the rising process, the scraper 204 and the nozzle 203 continue to work to perform a secondary cleaning of the inner wall of the suction bottle 211 to ensure that there are no dead corners in the cleaning process. After the cleaning disc 202 rises to the top of the suction bottle 211, the drive motor 208 and the cleaning pump 209 stop working, and the cleaning process ends.

[0051] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. For those skilled in the art, the present invention can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A portable ascites aspirator for liver cirrhosis, comprising a shell (101), a connecting tube (104) and a top plate (105), wherein the top plate (105) is detachably fixed to the top of the shell (101) and the connecting tube (104) is fixed to the top plate (105); Its features are, It also includes a suction component (200); The suction assembly (200) includes a water storage bladder (201), a cleaning disc (202), a nozzle (203), a guide rod (206), a drive motor (208), a cleaning pump (209), a connecting pipe (104), a suction bottle (211), and a moving rod (215). The suction bottle (211) is fixed inside the outer shell (101). The suction bottle (211) is used to store the extracted liquid. The water storage bladder (201) is located on top of the suction bottle (211). The water storage bladder (201) stores liquid for cleaning the suction bottle (211). The cleaning pump (209) is fixed inside the water storage bladder (201). The nozzle (203) is fixed to the edge of the cleaning disc (202), which is a hollow circular disc, and the nozzle (203) is provided in multiple ways; The nozzle (203) has its outlet facing the inner wall of the suction bottle (211). The cleaning disc (202) is slidably connected to the guide rod (206). The guide rod (206) is vertically fixed inside the suction bottle (211). The guide rod (206) is used to guide the cleaning disc (202) to move up and down inside the suction bottle (211). The cleaning disc (202) is spirally connected to the moving rod (215). The water storage bladder (201) is an annular bladder, and the connecting tube (104) passes through the circular hole in the center of the water storage bladder (201) and extends into the suction bottle (211).

2. The portable ascites aspiration device for liver cirrhosis according to claim 1, characterized in that, The top plate (105) is fixed with a water injection pipe (103) that communicates with the water storage bladder (201). The water injection pipe (103) is used to replenish water to the water storage bladder (201). The cleaning liquid stored in the water storage bladder (201) is physiological saline. The water injection pipe (103) is made of stainless steel. One end penetrates vertically through the top plate (105) and is welded and sealed to the water storage bladder (201). The other end extends to 10cm-15cm above the top plate (105) and is equipped with a threaded cap.

3. The portable ascites aspiration device for liver cirrhosis according to claim 1, characterized in that, The bottom of the water storage bladder (201) is fixed with a rigid polycarbonate partition (207) with a thickness of 3mm to 5mm. The suction bottle (211) is fixed at the bottom of the partition (207). The partition (207) separates the water storage bladder (201) from the suction bottle (211), and a sealing gasket is provided at the connection between the top flange of the partition (207) and the suction bottle (211). The water storage bladder (201) is an elastic silicone capsule.

4. The portable ascites aspiration device for liver cirrhosis according to claim 1, characterized in that, The suction bottle (211) is cylindrical and made of transparent medical-grade PP (polypropylene) material. The top is open and sealed to the partition (207) by a flange. The bottom is provided with an interface for connecting the filter (205). The filter (205) is detachably fixed to the bottom of the outer shell (101) and connected to the suction bottle (211) through a connecting pipe (104). Multiple metal mesh filter plates (217) for intercepting solids are fixed inside the filter (205). The bottom of the filter (205) can be opened to remove the filter plates (217) for cleaning.

5. A portable ascites aspiration device for liver cirrhosis according to claim 4, characterized in that, The filter (205) is made of transparent acrylic material. The top is connected to the bottom interface of the suction bottle (211) through a threaded connector and a rubber sealing gasket is provided at the connection. The filter plate (217) is a 3-4 layer stainless steel filter screen. The mesh size of the filter screen gradually increases from the upper layer to the lower layer. The upper layer of 80 mesh is used to intercept large particulate impurities, and the lower layer of 200 mesh is used to intercept fine particulate impurities.

6. A portable ascites aspiration device for liver cirrhosis according to claim 4, characterized in that, The filter (205) has a quick connector on the bottom end cap. The quick connector is snapped to a medical-grade polyethylene liquid storage bag. The liquid storage bag is used to store the filtered liquid. When the bag is full, it can be removed and replaced by pressing the buckle.

7. A portable ascites aspiration device for liver cirrhosis according to claim 1, characterized in that, The diameter of the cleaning disc (202) is smaller than that of the suction bottle (211). An annular rubber scraper (204) that can fit against the inner wall of the suction bottle (211) is fixed to the edge by a buckle. The nozzle (203) is fixed on the upper and lower sides of the scraper (204). The nozzle (203) is fixed obliquely on the cleaning disc (202). An annular water storage cavity (213) with a depth of 3mm to 4mm and a width of 8mm to 10mm is opened in the cleaning disc (202). The connecting pipe (104) includes a cleaning connecting pipe (104), one end of which is sealed and connected to the water storage cavity (213). The water storage cavity (213) and the nozzle (203) are connected through a guide hole to evenly distribute the liquid.

8. A portable ascites aspiration device for liver cirrhosis according to claim 3, characterized in that, The bottom of the partition (207) is fixed with a winding reel (214), and the cleaning connecting tube (104) is wound on the winding reel (214). The winding reel (214) is used to take up and put away the cleaning connecting tube (104) when the cleaning disc (202) moves up and down. The bottom of the partition (207) is rotatably connected with a rotating ring (212) of a gear ring structure. A gear that meshes with the rotating ring (212) is fixed on the shaft of the drive motor (208). The moving rod (215) is fixed to the bottom of the rotating ring (212) and rotates with it.

9. A portable ascites aspiration device for liver cirrhosis according to claim 1, characterized in that, The movable rod (215) is an arc-shaped rod distributed around the connecting pipe (104), with threads on the arc surface; the guide rod (206) is four stainless steel round rods with a diameter of 8mm to 10mm, symmetrically fixed inside the suction bottle (211), with the top end welded to the partition plate (207) and the bottom end welded to the bottom support of the suction bottle (211); the cleaning pump (209) is a miniature silent centrifugal pump with a power of 10W-15W, fixed in the center of the water storage bladder (201).

10. A portable ascites aspiration device for liver cirrhosis according to claim 1, characterized in that, The outer casing (101) has a handle (102) fixed on its side wall for easy handling; when the drive motor (208) is started, the drive gear drives the rotating ring (212) to rotate, and the rotating ring (212) drives the moving rod (215) to rotate synchronously, and drives the cleaning disc (202) to move up and down along the guide rod (206) through the screw nut transmission mechanism.

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