A smart collection and early warning device for monitoring the drainage process of ascites.

Abstract

This invention relates to ascites drainage devices, specifically to an intelligent collection and early warning device for monitoring the ascites drainage process. The device includes an external tubing, an automatic flow-changing device, collection drainage tubes, a disinfection device, a sampling device, individual drainage bags, a suspension bracket, a weighing system, and a base. The external tubing connects to the collection drainage tubes attached to each individual drainage bag via the automatic flow-changing device. The collection drainage tubes are connected to the disinfection device and the sampling device via T-joints. Each collection drainage tube is simultaneously connected to both the disinfection device and the sampling device, eliminating the need for a specific number of drainage bags. Individual drainage bags are hung on the suspension bracket. This invention allows for the selection of the number and volume of individual drainage bags based on a predetermined drainage volume, thereby utilizing the standard volume of each drainage bag to measure the drainage volume in the initial period and taking samples at intervals during this process.

Description

Technical Field

[0001] This invention relates to a drainage device for ascites, and more specifically to an intelligent collection and early warning device for monitoring the drainage process of ascites. Background Technology

[0002] Common causes of ascites include cirrhosis and tumors. Up to 7 million people develop cirrhosis annually due to various liver diseases, and malignant ascites is a common complication of tumors. For patients with ascites, intermittent drainage via paracentesis can reduce abdominal pressure, alleviate symptoms, and improve general condition. During drainage, real-time monitoring of the drainage volume is necessary to prevent excessive drainage. Simultaneously, the ascites needs to be collected and disinfected. As the number of patients increases, this adds to the workload of medical staff. Existing alarm devices primarily detect changes in ascites weight using pressure sensors. In clinical practice, the nature of the ascites may change during drainage for the same patient, requiring adjustments to the drainage volume based on the patient's condition. Current devices cannot monitor the drainage status in real-time and automatically trigger a safe drainage threshold alarm for different ascites weights. Furthermore, current clinical disinfection of ascites involves emptying the drainage bag into another device and treating it as medical waste with chlorine tablets, increasing the risk of infection and workload for medical staff. In response to the above situation, there is an urgent need for an alarm and collection device for abdominal effusion to improve the intelligent management of abdominal drainage in patients. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide an intelligent collection and early warning device for monitoring the drainage process of ascites, addressing the shortcomings of the prior art.

[0004] The technical problem to be solved by the present invention is achieved through the following technical solution: The present invention discloses an intelligent collection and early warning device for monitoring the drainage process of peritoneal effusion, including an external tubing, an automatic flow-changing mechanism, a collection and drainage tube, a disinfection device, a sampling device, a drainage bag unit, a suspension bracket, a weighing system, and a base. The weighing system is installed on the upper part of the base, and a weighing platform is provided on the top of the weighing system. The suspension bracket is an inverted U-shaped frame, and an insertion plate is fixedly connected to the bottom of the suspension bracket. The suspension bracket is horizontally inserted into the weighing platform through the insertion plate. A drainage bag unit is hung on the top of the suspension bracket, and a collection and drainage tube is connected to the upper end of each drainage bag unit. A column is fixedly provided on the base, and the automatic flow-changing mechanism is installed on the upper end of the column. The drainage bag unit is connected to the automatic flow-changing mechanism through the collection and drainage tube. The automatic flow-changing mechanism is used to automatically switch and connect the peritoneal effusion drained by the external tubing at the front end to the drainage bag unit at the rear end. The disinfection device is installed on the column.

[0005] Furthermore, the external tubing includes an external drainage tube and a flow rate regulating pressure roller. The external tubing is equipped with two T-joints. The T-joint at the front of the external tubing is used for rinsing abdominal effusion, and the T-joint at the rear of the external tubing is used to connect to a sampling device. The sampling device includes a flat bag for direct imaging and recording observation and a sampling test tube. The sampling device can intermittently photograph and collect effusion samples at various time periods through a timed valve.

[0006] Furthermore, the drainage bag unit is provided with a strain patch for sensing changes in the surface tension of the bag. The strain patch includes a stress sensor and is fixedly attached to the upper part of the drainage bag unit near the collection drainage tube.

[0007] Furthermore, the side of the drainage bag unit is provided with a pipe connector for connecting the disinfection device.

[0008] Furthermore, the automatic flow-changing mechanism includes a column base, a pressure rod, a counter-pressure tube, and a flow-changing turntable. The column base is fixedly connected to the top of the column, and the top of the column base is provided with an elastic plastic head. The pressure rod is connected to the column base through the elastic plastic head. A vertical counter-pressure tube is installed at one end of the pressure rod, and a permanent magnet is installed at the other end of the pressure rod. The rear end of the counter-pressure tube is connected to the end of the external pipeline. The flow-changing turntable is rotatably connected to the lower part of the column base. The flow-changing turntable is provided with an annular groove, and a circular hole is provided at the bottom of the annular groove. A square valve tube is fixedly installed below the circular hole, and a collection drainage tube is fixedly connected to the bottom of the square valve tube. The conical counter-pressure part is connected to the collection drainage tube of the corresponding drainage bag unit through the square valve tube.

[0009] Furthermore, a groove is provided on the right side of the square valve tube, and a square plate is rotatably connected to the upper end of the groove. The square plate is connected to the groove by a spring. The upper end of the square valve tube is connected to the round hole. A tapered counter-pressure part is provided at the front end of the counter-pressure part. An outwardly protruding tube with an outer diameter smaller than that of the round hole is provided at the bottom end of the tapered counter-pressure part. The outwardly protruding tube is used to push the square plate open when the tapered counter-pressure part contacts the inner surface of the annular groove.

[0010] Furthermore, the converter turntable is provided with a tapered annular groove, which is a rotating body with the center of the converter turntable as the rotation center. The circular holes are distributed in a ring array, and the converter turntable is provided with electromagnets installed at an array angle corresponding to the circular holes.

[0011] Furthermore, the disinfection device includes an injection cylinder, a piston, and a miniature linear electric cylinder. The upper part of the injection cylinder is connected to a return pipe, and the lower part of the injection cylinder is connected to an injection pipe. The piston is slidably connected to the injection cylinder and is driven by the miniature linear electric cylinder. The injection pipe is connected to a suction pipe through a three-way connector, and the suction pipe is connected to a suction cylinder for storing disinfectant solution.

[0012] Furthermore, the end of the return pipe is simultaneously connected to the collection and drainage pipes corresponding to multiple drainage bag units via a multi-port connector, and the end of the injection pipe is simultaneously connected to the side of multiple drainage bag units via a multi-port connector. An electrically controlled valve body is installed on the return pipe, the suction pipe, and the injection pipe.

[0013] Compared with the prior art, the present invention has the following advantages:

[0014] (1) The present invention can select the number and volume of drainage bag units by a predetermined drainage volume, thereby using the standard volume of the drainage bag units to measure the drainage volume in the first period, and taking samples at intervals during the process, avoiding the problem of measurement error caused by changes in the property density and other state parameters of the drainage fluid over time when the drainage volume is indirectly reflected by mass;

[0015] (2) The present invention utilizes the relationship between the mass and volume changes in the drainage state process in the early stage to estimate the continuous change process of the average density and obtain the change curve. Thus, based on the density change of the actual drainage fluid, it can determine whether a change in the state of the drainage fluid has occurred. When the weighing system detects that the change value exceeds the set threshold, it will issue an alarm prompt in time.

[0016] (3) The present invention, through a phased drainage quality control process, satisfies the process monitoring of flow rate and the end-point alarm of drainage volume as a whole, avoiding the problems of inaccurate and unreliable detection caused by contact or non-contact detectors, as well as the problems of easy blockage, pollution and additional resistance that are not suitable for the drainage process. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 This is the present invention. Figure 1 A magnified view of a portion of position A in the middle;

[0019] Figure 3 This is a top view of the converter turntable 25 of the present invention;

[0020] Figure 4 This is a schematic diagram of the structural connection of the disinfection device 4 of the present invention;

[0021] Figure 5 This is a schematic diagram of the side insertion structure of the suspension bracket 7 of the present invention;

[0022] 1-External pipe, 11-External drainage pipe, 12-T-connector, 13-Flow rate regulating pressure roller, 2-Automatic flow exchange mechanism, 21-Elastic plastic head, 22-Pressure rod, 23-Pressure counteracting pipe, 24-Conical pressure counteracting part, 241-Outwardly protruding pipe, 25-Flow exchange turntable, 251-Annular groove, 251a-Round hole, 26-Square valve pipe, 261-Square plate, 262-Plate groove, 27-Permanent magnet, 28-Electromagnet, 29- Column base, 3-collection and drainage tube, 4-disinfection device, 41-injection cylinder body, 411-injection tube, 411a-suction tube, 411b-suction cylinder, 412-return tube, 413-electrically controlled valve body, 42-piston body, 43-miniature linear electric cylinder, 5-sampling device, 6-drainage bag unit, 61-strain gauge, 7-suspension bracket, 71-insertion plate, 8-weighing system, 81-weighing platform, 9-base. Detailed Implementation

[0023] like Figure 1-5 As shown, an intelligent collection and early warning device for monitoring the drainage process of abdominal effusion according to the present invention includes an external tubing 1, an automatic flow exchange mechanism 2, a collection drainage tube 3, a disinfection device 4, a sampling device 5, a drainage bag unit 6, a suspension bracket 7, a weighing system 8, and a base 9. The external tubing 1 includes an external drainage tube 11 and a flow rate regulating pressure roller 13. The external tubing 1 is provided with two T-joints 12. The T-joint 12 at the front end of the external tubing 1 is used for rinsing the abdominal effusion, and the T-joint 12 at the rear end of the external tubing 1 is used to connect to the sampling device 5. The sampling device 5 includes a flat bag for direct shooting and recording observation and a sampling test tube. The sampling device 5 can intermittently shoot and collect effusion samples at various time periods through a timer device. Of course, medical staff can customize the selection according to their needs, or choose existing mature sampling products. No specific limitation is made here.

[0024] A weighing system 8 is installed on the upper part of the base 9. The weighing system 8 has a weighing platform 81 on its top. The suspension bracket 7 is an inverted U-shaped frame. A strip plate 71 is fixedly connected to the bottom of the suspension bracket 7. The suspension bracket 7 is horizontally inserted into the weighing platform 81 through the strip plate 71. A drainage bag unit 6 is hung on the top of the suspension bracket 7. Medical staff can determine the required volume and number of drainage bag units 6 based on the amount of drainage in a single session, thereby further confirming how many suspension brackets 7 are needed. The drainage bag unit 6 is then hung on the suspension bracket 7, and the strip plate 71 of the suspension bracket 7 is then... 1. After inserting the weighing platform 81 and connecting the collection drainage tube 3, a parallel structure with compact space can be formed by pushing and pulling, thereby optimizing the operating space. Specifically, the drainage bag unit 6 is equipped with a strain patch 61 for sensing changes in the surface tension of the bag. The strain patch 61 includes a stress sensor. The strain patch 61 is fixedly attached to the upper part of the drainage bag unit 6 near the collection drainage tube 3. The stress sensor needs to be calibrated before use to determine the signal trigger threshold of the stress sensor, so that when the stress sensor receives a surface tension that reaches the threshold, the solution volume inside the drainage bag unit 6 reaches the rated volume. The side of the drainage bag unit 6 is provided with a pipe connector for connecting the disinfection device 4, thereby pre-connecting the disinfection device 4 for automatic disinfection after drainage is completed. Specifically, the disinfection device 4 is installed on a column. The disinfection device 4 includes an injection cylinder 41, a piston 42, and a miniature linear electric cylinder 43. The upper part of the injection cylinder 41 is connected to a return pipe 412, and the lower part is connected to an injection pipe 411. The piston 42 is slidably connected to the injection cylinder 41 and is driven by the miniature linear electric cylinder 43. The injection pipe 411 is connected to a suction pipe 411a via a three-way connector, and the suction pipe 411a is connected to a suction cylinder 411b for storing disinfectant. The end of the return pipe 412 is simultaneously connected to the collection and drainage pipes 3 corresponding to multiple drainage bag units 6 via a multi-way connector. The end of the injection pipe 411 is simultaneously connected to the side of multiple drainage bag units 6 via a multi-way connector. An electrically controlled valve body 413 is installed on the return pipe 412, the suction pipe 411a, and the injection pipe 411. When disinfection is required after drainage, the electrically controlled valves 413 on the return pipe 412 and the injection pipe 411 are opened, and the electrically controlled valve 413 on the suction pipe 411a is closed. The piston 42 is driven to push down and inject into all drainage bag units 6. In order to balance the pressure, some of the accumulated liquid is returned to the newly formed receiving space in the upper part of the piston 42. Afterwards, only the space in the upper part of the piston 42 needs to be disinfected, and there is no need to disinfect each drainage bag unit 6 separately, thereby effectively improving the safety and efficiency of disinfection.

[0025] Each drainage bag unit 6 is connected to a collection drainage tube 3 at its upper end. The base 9 is fixedly provided with a column. The automatic flow-changing mechanism 2 is installed on the upper end of the column. The drainage bag unit 6 is connected to the automatic flow-changing mechanism 2 through the collection drainage tube 3. The automatic flow-changing mechanism 2 is used to automatically switch and connect the peritoneal fluid drained by the external tube 1 at the front end to the drainage bag unit 6 at the rear end.

[0026] The automatic converter mechanism 2 is further described below. This automatic converter mechanism 2 includes a column base 29, a pressure rod 22, a counter-pressure tube 23, and a converter turntable 25. The column base 29 is fixedly connected to the top of a column. An elastic plastic head 21 is provided on the top of the column base 29. The pressure rod 22 is connected to the column base 29 through the elastic plastic head 21. A vertical counter-pressure tube 23 is installed at one end of the pressure rod 22, and a permanent magnet 27 is installed at the other end of the pressure rod 22. The counter-pressure tube 23... The rear end of 3 is connected to the end of the external pipeline 1. The converter turntable 25 is rotatably connected to the lower part of the column base 29. The bottom of the annular groove 251 is provided with a circular hole 251a. The converter turntable 25 is provided with an annular groove 251 with a vertical cross section in the shape of a cone. The annular groove 251 is a rotating body with the center of rotation of the converter turntable 25 as the center of rotation. The circular holes 251a are distributed in a ring array. The converter turntable 25 is provided with electromagnets 28 installed at an array angle corresponding to the circular holes 251a.

[0027] A square valve tube 26 is fixedly installed below the aforementioned circular hole 251a. The bottom of the square valve tube 26 is fixedly connected to the collection drainage tube 3. The conical counter-pressure part 24 is connected to the collection drainage tube 3 of the corresponding drainage bag unit 6 through the square valve tube 26. A plate groove 262 is provided on the right side of the square valve tube 26. A square plate 261 is rotatably connected to the upper end of the plate groove 262. The square plate 261 is connected to the plate groove 262 by a spring. The upper end of the square valve tube 26 is connected to the circular hole 251a. The front end of the counter-pressure tube 23 is provided with a conical counter-pressure part 24. The bottom end of the conical counter-pressure part 24 is provided with an outwardly protruding tube 241 with an outer diameter smaller than that of the circular hole 251a. The outwardly protruding tube 241 is used to push the square plate 261 open when the conical counter-pressure part 24 contacts the inner surface of the annular groove 251.

[0028] In the actual drainage process, medical staff first determine the number of drainage bag units 6 and connect the various tubes. Then, the drainage speed is controlled by adjusting the pressure roller. At the end of the outer tube 1, there is a pressure tube 23. The corresponding electromagnet 28 is energized and repels the permanent magnet 27. Due to the lever effect, the pressure tube 23 forms a tight pressure. At this time, the edge of the outer protrusion tube 241 at the end of the pressure tube 23 overcomes the resistance of the elastic element and presses the square plate 261 downward, thereby opening the square valve tube 26. The drainage fluid enters the corresponding drainage bag unit 6 through the collection drainage tube 3. When the drainage bag unit 6 reaches the rated volume, the strain gauge 61 is triggered. The electromagnet 28 is energized and attracts the permanent magnet 27, thereby lifting the pressure tube 23. Then, it is de-energized and the adjacent electromagnet 28 is energized and attracted, so that the commutation turntable 25 can be driven to rotate. Then, the adjacent electromagnet 28 is energized and repels, thus repeating the process of opening the next corresponding square plate 261 by pressure. In the above commutation process, the commutation process can be made stable by setting the duration. Specifically, the accompanying drawings of this invention show eight sets of drainage structures, corresponding to eight drainage bag units 6 and eight circular holes 251a of the exchange turntables 25. The actual number can be optimized according to conventional needs, and will not be listed in detail here. During the drainage process, the weighing system 8 can record mass change data in real time. Using the full filling of a single drainage bag as an analysis cycle, the system determines the relationship between mass volume and time in each cycle, thereby determining the change in liquid density and providing timely alarm prompts for abnormal situations. This invention solves the problem of inaccurate detection of changing liquids in ordinary flow detection devices. Contact-type devices introduce resistance and are prone to clogging and contamination, making them unsuitable for drainage monitoring. This application sets a target volume of liquid for each drainage cycle and can set a certain threshold alarm range. When the drained liquid reaches the threshold range, an alarm is triggered, and the flow rate is reduced until it slowly reaches near the target volume. This invention utilizes the complete standard volume of the drainage bag to measure the main volume of the initial drainage process and supplements it with precise measurement of the scattered volume of the final drainage process. This avoids the conversion error caused by changes in the properties, density, and other state parameters of the drainage fluid over time when indirectly reflecting the volume value through mass measurement. Furthermore, the weighing device is used to meet the dual requirements of controlling the flow rate and controlling the drainage volume at different drainage stages, thus meeting the usage requirements without the need for flow rate meters and flow meters.

[0029] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. 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. An intelligent collection and early warning device for monitoring the drainage process of ascites, characterized in that: The system includes an external pipeline, an automatic flow-changing mechanism, a collection and drainage tube, a disinfection device, a sampling device, individual drainage bags, a suspension bracket, a weighing system, and a base. The weighing system is mounted on the top of the base, and a weighing platform is located on top of the weighing system. The suspension bracket is an inverted U-shaped frame, with a strip plate fixedly connected to its bottom. The suspension bracket is horizontally connected to the weighing platform via the strip plate. Individual drainage bags are hung on top of the suspension bracket, and each drainage bag has a collection and drainage tube connected to its upper end. A column is fixedly mounted on the base, and the automatic flow-changing mechanism is installed on the upper end of the column. The automatic flow-changing mechanism includes a column base, a pressure rod, a counter-pressure tube, and a flow-changing turntable. The column base is fixedly connected to the top of the column, and an elastic plastic head is located on the top of the column base. The pressure rod is connected to the column base via the elastic plastic head. A vertical counter-pressure tube is installed at one end of the pressure rod, and a permanent magnet is installed at the other end of the pressure rod. The rear end of the pressure-relief tube is connected to the end of the external pipeline. The converter turntable is rotatably connected to the lower part of the column base. The converter turntable has an annular groove with a circular hole at the bottom. A square valve tube is fixedly installed below the circular hole, and a collection drainage tube is fixedly connected to the bottom of the square valve tube. The front end of the pressure-relief tube has a conical pressure-relief part, which is connected to the collection drainage tube of the corresponding drainage bag unit through the square valve tube. The converter turntable has an annular groove with a vertically conical cross-section. The annular groove is a rotating body with the center of the converter turntable as the center of rotation. The circular holes are distributed in a ring array. The converter turntable has electromagnets installed at an angle corresponding to the array of circular holes. The drainage bag unit is connected to the automatic switching mechanism through the collection drainage tube. The automatic switching mechanism is used to automatically switch and dock the peritoneal fluid drained by the external pipeline at the front end to the drainage bag unit at the rear end. The disinfection device is installed on the column.

2. The intelligent collection and early warning device for monitoring the drainage process of ascites according to claim 1, characterized in that: The external tubing includes an external drainage tube and a flow rate regulating pressure roller. The external tubing is equipped with two T-joints. The T-joint at the front of the external tubing is used for rinsing abdominal effusion, and the T-joint at the rear of the external tubing is used to connect to a sampling device. The sampling device includes a flat bag for direct imaging and recording observation and a sampling test tube. The sampling device can intermittently photograph and collect effusion samples at various time periods through a timed valve.

3. The intelligent collection and early warning device for monitoring the drainage process of ascites according to claim 1, characterized in that: The drainage bag unit is equipped with a strain patch for sensing changes in the surface tension of the bag. The strain patch includes a stress sensor and is fixedly attached to the upper part of the drainage bag unit near the collection drainage tube.

4. The intelligent collection and early warning device for monitoring the drainage process of ascites according to claim 3, characterized in that: The drainage bag unit has a pipe connector on its side for connecting to the disinfection device.

5. The intelligent collection and early warning device for monitoring the drainage process of ascites according to claim 1, characterized in that: The right side of the square valve tube is provided with a plate groove, and a square plate is rotatably connected to the upper end of the plate groove. The square plate is connected to the plate groove by a spring. The upper end of the square valve tube is connected to the round hole. The front end of the pressure-relief tube is provided with a conical pressure-relief part. The bottom end of the conical pressure-relief part is provided with an outwardly protruding tube with an outer diameter smaller than that of the round hole. The outwardly protruding tube is used to push the square plate open when the conical pressure-relief part contacts the inner surface of the annular groove.

6. The intelligent collection and early warning device for monitoring the drainage process of ascites according to claim 1, characterized in that: The disinfection device includes an injection cylinder, a piston, and a miniature linear electric cylinder. The upper part of the injection cylinder is connected to a return pipe, and the lower part of the injection cylinder is connected to an injection pipe. The piston is slidably connected to the injection cylinder and is driven by the miniature linear electric cylinder. The injection pipe is connected to a suction pipe through a three-way connector, and the suction pipe is connected to a suction cylinder for storing disinfectant solution.

7. The intelligent collection and early warning device for monitoring the drainage process of ascites according to claim 6, characterized in that: The end of the return pipe is connected to the collection and drainage pipes of multiple drainage bag units simultaneously via a multi-port connector, and the end of the injection pipe is connected to the side of multiple drainage bag units simultaneously via a multi-port connector. The return pipe, suction pipe and injection pipe are all equipped with electrically controlled valve bodies.

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