Peritoneal dialysis system and method

Abstract

The invention discloses a peritoneal dialysis system and method, and relates to the technical field of medical instruments. The peritoneal dialysis system comprises a supporting frame, a peritoneal dialysis machine and a waste liquid barrel, wherein the peritoneal dialysis machine and the waste liquid barrel are arranged on the supporting frame; the peritoneal dialysis machine comprises a machine body, a peristaltic pump head and a cartridge, the peristaltic pump head and the cartridge are inserted into the machine body, and the cartridge conveys peritoneal dialysis liquid to the peristaltic pump head; two groups of symmetrical rotating parts are inserted into a shell of the peristaltic pump head; and a Y-shaped through pipe is clamped between the rotating parts and the shell and is communicated with the cartridge. Power switching of the peristaltic pump head is achieved through a sliding gear, a shifting fork, an electromagnet and the like, and different rotating pieces are driven to extrude a Y-shaped through pipe to complete liquid conveying and liquid discharging. And the S-shaped passage of the cartridge is matched with the heating module to realize uniform heating of peritoneal dialysis liquid. The system is compact in structure, convenient to disassemble and assemble and stable in operation, the infusion process can be accurately controlled, and the safety and convenience of peritoneal dialysis treatment are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a peritoneal dialysis solution infusion system and method. BACKGROUND

[0002] Peritoneal dialysis is one of the important methods for treating end-stage renal disease. It infuses peritoneal dialysis solution into the patient's abdominal cavity, uses the semi-permeable membrane characteristics of the peritoneum to exchange solutes and water between the blood and the peritoneal dialysis solution, and then removes metabolic waste and excess water from the body. The peritoneal dialysis solution infusion system, as the core equipment for peritoneal dialysis treatment, directly affects the treatment effect and patient safety.

[0003] The existing peritoneal dialysis solution infusion system has many shortcomings: the peristaltic pump head, as the core component of the infusion, has a complex structure design, is inconvenient to install and disassemble, and is difficult to achieve efficient switching between infusion and drainage, increasing the operation difficulty; the peritoneal dialysis solution is not uniformly heated, and local overheating or insufficient heating easily occurs, stimulating the patient's abdominal cavity and causing discomfort; there is a lack of real-time monitoring of the weight of the peritoneal dialysis solution bag, making it impossible to accurately control the infusion volume, and the pipeline is not firmly fixed, easily falling off and causing liquid leakage. In addition, the use process of the existing system lacks standardized guidance, and the operation steps are not clear, easily causing safety hazards due to human operation errors.

[0004] The peristaltic pump head is inconvenient to install and disassemble, and is difficult to achieve efficient switching between infusion and drainage; the peritoneal dialysis solution is not uniformly heated, stimulating the patient's abdominal cavity and causing discomfort; there is a lack of real-time monitoring of the weight of the peritoneal dialysis solution bag, making it impossible to accurately control the infusion volume. SUMMARY

[0005] The present application aims to provide a peritoneal dialysis solution infusion system and method to solve the problems of the existing peritoneal dialysis solution infusion system, such as inconvenient disassembly, low switching efficiency between infusion and drainage, uneven heating, and non-standardized use.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solution: a peritoneal dialysis solution infusion system and method, comprising a support frame, a peritoneal dialysis solution infusion machine and a waste liquid barrel, the peritoneal dialysis solution infusion machine and the waste liquid barrel being located on the support frame, the peritoneal dialysis solution infusion machine comprising a machine body, a peristaltic pump head and a cartridge, the peristaltic pump head and the cartridge being inserted into the machine body, the cartridge being used to deliver peritoneal dialysis solution to the peristaltic pump head; the peristaltic pump head comprising a housing, a rotating member and a "Y"-shaped tube, the rotating member being inserted into the housing, the rotating member being symmetrically provided with two groups, the "Y"-shaped tube being clamped between the rotating member and the housing, and the "Y"-shaped tube being in communication with the cartridge.

[0007] Preferably, the support frame comprises a base plate, a top plate and a supporting plate, the supporting plate is located between the base plate and the top plate, the supporting plate is used for placing the peritoneal dialysis machine, the base plate is used for placing the waste liquid barrel, the bottom of the top plate is fixedly connected with a hook, and the hook is provided with a plurality of groups of tension sensors.

[0008] Preferably, the support frame is further provided with a clamping piece, a clamping rod is inserted into the inner side of the clamping piece, and the clamping rod is spring-connected with the clamping piece.

[0009] Preferably, arc-shaped clamping grooves are symmetrically arranged on the two sides of the shell, a socket is arranged on the front side of the clamping groove, a positioning shaft is inserted into the inner side of the shell, a sliding gear is sleeved on the outer side of the positioning shaft, a yoke is clamped on the outer side of the positioning shaft, and the yoke is clamped on the outer side of the positioning shaft.

[0010] Preferably, a sliding block is inserted into the inner side of the yoke, a sliding guide rod is inserted into the inner side of the sliding block, the sliding guide rod is inserted into the inner side of the shell at both ends, an electromagnet is sleeved on the outer side of the sliding guide rod, the electromagnet is located on the two sides of the sliding block, and the electromagnet is used to drive the sliding block to drive the yoke to slide left and right, so as to drive the sliding gear to slide left and right on the positioning shaft.

[0011] Preferably, a transmission gear rod is further inserted into the inner side of the shell, the transmission gear rod is meshingly connected with the sliding gear, and the transmission gear rod is drivingly connected with a power motor.

[0012] Preferably, a plurality of groups of rollers are evenly distributed in the inner side of the rotating member in a ring shape, the rollers correspond to the clamping grooves; an axle rod is inserted into the inner side of the rotating member, the axle rod is inserted into the shell, the other end of the axle rod penetrates through the shell to the inner side of the shell, a transmission gear is sleeved on the outer side of the axle rod, the transmission gear is located in the inner side of the shell, and the transmission gear can be meshingly connected with the sliding gear.

[0013] Preferably, the two branches of the "Y"-shaped tube are inserted into the inner side of the clamping groove and are tightly abutted by the rollers, one of the two branches is used for connecting the card box, the other of the two branches is used for connecting the waste liquid barrel, and the main pipe of the "Y"-shaped tube is used for connecting the permanent retention pipe on the patient.

[0014] Preferably, the card box is inserted into the inner side of the machine body and is heated by the heating module arranged on the inner side of the machine body, two groups of communication pipes are connected to the top of the card box, one group of the communication pipes is connected with an input pipe, the top of the input pipe is connected with a shunt pipe, the shunt pipe is used for connecting the peritoneal dialysis bag, the other group of the communication pipes is connected with an output pipe, the output pipe is used for connecting the "Y"-shaped tube, and the inner side of the card box is provided with an "S"-shaped channel communicating the two groups of communication pipes.

[0015] Preferably, a method for using a peritoneal dialysis system, characterized in that it comprises the following steps: Step 1: equipment preparation, place the peritoneal dialysis machine on the support frame, place the waste liquid barrel on the bottom plate, check the connection state of each part, ensure that the peristaltic pump head and the cassette are firmly connected with the machine body; Step 2: pipeline connection, hang the peritoneal dialysis bag on the hook of the top plate, connect the input pipe of the cassette with the shunt pipe, connect the output pipe of the cassette with one of the branch pipes of the "Y" shaped pipe, connect the other branch pipe of the "Y" shaped pipe with the waste liquid barrel, connect the main pipe with the patient's permanent retention pipe, and clamp each pipe through the clamping rod of the clamp; Step 3: parameter setting, start the peritoneal dialysis machine, set the peritoneal dialysis heating temperature, infusion speed and infusion volume according to the treatment needs, and the tension sensor monitors the weight of the peritoneal dialysis bag in real time and feeds back to the control system; Step 4: peritoneal dialysis heating, the heating module in the machine body heats the cassette, and the peritoneal dialysis enters the "S" shaped passage of the cassette through the shunt pipe and the input pipe, realizing uniform heating; Step 5: infusion process, the control system controls the power motor to start, drives the transmission gear to rotate, drives the sliding block to slide through the electromagnet, makes the sliding gear mesh with the transmission gear connected with the infusion side rotating part, and the roller of the rotating part extrudes the infusion branch pipe of the "Y" shaped pipe, so that the heated peritoneal dialysis is transported to the patient's abdominal cavity; Step 6: liquid discharge process, after the infusion is completed, the control system controls the electromagnet to act, so that the sliding gear is switched to mesh with the transmission gear connected with the discharge side rotating part, the rotating part drives the roller to extrude the discharge branch pipe of the "Y" shaped pipe, and the waste liquid in the patient's abdominal cavity is discharged into the waste liquid barrel; Step 7: treatment ends, after the liquid discharge is completed, the peritoneal dialysis machine is turned off, and each pipe is disassembled in turn, and the equipment is cleaned and disinfected.

[0016] The technical effects and advantages of the present application are as follows: 1. The peritoneal dialysis system and method, the shell of the peristaltic pump head and the rotating part, the cassette and the machine body are connected by plug-in connection, the "Y" shaped pipe is quickly connected through the clamping slot, which greatly simplifies the installation and disassembly process, and is convenient for equipment maintenance and replacement of parts; the cooperation design of the sliding gear and the fork realizes the quick switching of infusion and liquid discharge, and improves the treatment efficiency; 2. The peritoneal dialysis system and method, the "S" shaped passage on the inner side of the cassette prolongs the residence time of the peritoneal dialysis in the heating area, cooperates with the heating module of the machine body, makes the peritoneal dialysis evenly heated, effectively avoids the stimulation caused by local overheating or insufficient heating to the patient, and improves the treatment comfort; 3. The peritoneal dialysis solution delivery system and method, through the electromagnetic drive slider to drive the shift fork to realize the precise switching of the sliding gear, cooperate with the transmission effect of the power motor and the transmission gear rod, and ensure the stable operation of the peristaltic pump head. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0018] Figure 1 It is a schematic diagram of the overall structure of the present application. Figure 2 It is a schematic diagram of the support frame structure of the present application. Figure 3 It is a schematic diagram of the structure of the peritoneal dialysis solution delivery machine of the present application. Figure 4 It is a schematic diagram of the structure of the peristaltic pump head of the present application. Figure 5 It is a schematic diagram of the structure of the shell of the present application. Figure 6 It is a schematic diagram of the internal structure of the peristaltic pump head of the present application. Figure 7 It is a schematic diagram of the structure of the shift fork of the present application. Figure 8 It is a schematic diagram of the structure of the card cassette of the present application. Figure 9 It is a schematic diagram of the cross-sectional structure of the card cassette of the present application.

[0019] In the figure: 1, support frame; 11, supporting plate; 12, bottom plate; 13, top plate; 131, tension sensor; 132, hook; 14, clamping piece; 2, peritoneal dialysis solution delivery machine; 21, machine body; 22, peristaltic pump head; 221, shell; 2211, clamping groove; 2212, socket; 2213, positioning shaft; 2214, sliding gear; 2215, shift fork; 22151, slider; 22152, sliding guide rod; 22153, electromagnet; 2216, transmission gear rod; 222, rotating piece; 2221, roller; 2222, shaft; 2223, transmission gear; 223, "Y" shaped through pipe; 23, card cassette; 231, communication pipe; 232, input pipe; 2321, shunt pipe; 233, output pipe; 234, "S" shaped passage; 3, waste liquid barrel. DETAILED DESCRIPTION

[0020] Clearly, the described embodiments are merely a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative effort should belong to the protection scope of the present application.

[0021] The embodiments of the present application disclose a peritoneal dialysis solution system and method, according to the accompanying drawings Figures 1-2 As shown in the drawings, the system comprises a support frame 1, a dialysis solution machine 2 and a waste liquid barrel 3, and the dialysis solution machine 2 and the waste liquid barrel 3 are placed on the support frame 1. The support frame 1 is composed of a supporting plate 11, a bottom plate 12 and a top plate 13, and the three are fixedly connected through stainless steel columns. The supporting plate 11 is located between the bottom plate 12 and the top plate 13, and the surface of the supporting plate 11 is provided with anti-skid rubber pads for placing the dialysis solution machine 2. The bottom plate 12 is adapted to the shape of the waste liquid barrel 3 to prevent the waste liquid barrel 3 from sliding. The bottom of the top plate 13 is fixedly provided with a plurality of tension sensors 131, and the bottom of the tension sensor 131 is welded with a hook 132 for hanging different specifications of peritoneal dialysis solution bags. The column of the support frame 1 is fixedly provided with a clamping piece 14, and the inner side of the clamping piece 14 is inserted with a clamping rod made of rubber. A return spring is connected between the clamping rod and the clamping piece 14, and the clamping and fixing of the pipeline are realized through the spring elastic force.

[0022] According to the accompanying drawings Figures 3-9 As shown in the drawings, further, the dialysis solution machine 2 comprises a machine body 21, a peristaltic pump head 22 and a card cassette 23. The front surface of the machine body 21 is provided with a plug-in slot, and the peristaltic pump head 22 and the card cassette 23 are detachably connected with the machine body 21 through the plug-in slot. The inner side of the machine body 21 is provided with a temperature controller and a heating module. The heating module adopts a silica gel heating sheet and is attached to the outer side wall of the card cassette 23. The card cassette 23 is made of medical-grade PVC material and integrally formed with two groups of communication pipes 231 at the top. One group of the communication pipes 231 is connected with an input pipe 232 through a luer joint, and the top of the input pipe 232 is connected with a three-way pipe 2321, which can simultaneously connect multiple peritoneal dialysis solution bags. The other group of the communication pipes 231 is connected with an output pipe 233 through a luer joint, and the output pipe 233 is connected with one branch pipe of a “Y” shape communication pipe 223. The inner side of the card cassette 23 is provided with an “S” shape passage 234 to ensure that the peritoneal dialysis solution is fully heated.

[0023] According to the accompanying drawings Figures 3-6As shown, further, the peristaltic pump head 22 comprises a shell 221 made of ABS engineering plastic, two sides of which are provided with symmetrical arc-shaped clamping grooves 2211, and the front side of each clamping groove 2211 is provided with a socket 2212 for facilitating the insertion of the "Y"-shaped through pipe 223. The inner side of the shell 221 is inserted with a positioning shaft 2213 through a bearing, and the outer side of the positioning shaft 2213 is sleeved with a sliding gear 2214, the outer side of which is clamped with a shift fork 2215, the fork of which is matched with the sliding gear 2214, and the bottom of the shift fork 2215 is connected with a sliding block 22151 through a pin shaft, the inner side of the sliding block 22151 is inserted with a sliding guide rod 22152, the two ends of which are fixed to the inner side of the shell 221 through a bracket, and the outer side of the sliding guide rod 22152 is sleeved with two electromagnets 22153, which are respectively located on the two sides of the sliding block 22151, and the sliding block 22151 is controlled to slide left and right along the sliding guide rod 22152 through the on-off control of the electromagnets 22153, thereby driving the shift fork 2215 to push the sliding gear 2214 to slide on the positioning shaft 2213.

[0024] According to the accompanying drawings Figures 3-6 As shown, particularly disclosed, the inner side of the shell 221 is also inserted with a transmission gear rod 2216 through a bearing, which is engaged with the sliding gear 2214, and one end of the transmission gear rod 2216 is connected with a power motor through a shaft coupling, and the rotating speed can be adjusted through the control system of the machine body 21. The rotating member 222 is symmetrically provided with two groups, the inner side of which is inserted with six groups of rollers 2221 through pin shafts, which are made of medical rubber material and are uniformly distributed in a ring shape corresponding to the positions of the clamping grooves 2211. The center of the rotating member 222 is inserted with a shaft rod 2222, which is inserted into the shell 221 through a bearing, and the other end thereof extends to the inner side of the shell 221, and the outer side of the shaft rod 2222 is key-connected with a transmission gear 2223, which is matched with the sliding gear 2214, and the left and right sliding of the sliding gear 2214 realizes the alternate engagement with the two groups of transmission gears 2223.

[0025] According to the accompanying drawings Figures 3-6 As shown, particularly disclosed, the "Y"-shaped through pipe 223 is made of medical silica gel material, and the two branch pipes are respectively inserted into the clamping grooves 2211 on the two sides of the shell 221 and are tightly abutted by the rollers 2221, one of which is connected with the output pipe 233 of the cassette 23, and the other is connected with the waste liquid barrel 3 through a hose, and the main pipe is connected with the permanent retention pipe on the patient's body through a luer connector.

[0026] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; it is not intended to exclude myriad other embodiments of the present application that other inventors can develop based on the description herein. A person of ordinary skill in the art will recognize that elements from the various embodiments can be combined to form additional embodiments. It is intended that the specification and examples be considered as exemplary only, with the true scope of the application being indicated by the following claims.

[0027] The foregoing is considered as illustrative only of the principles of the application. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the application to the exact construction and practice described. Accordingly, all such variations are intended to be included within the scope of the present application as defined in the following claims, along with the full scope of equivalents to which such claims are entitled.

Claims

1. A peritoneal dialysis system, comprising a support frame (1), a dialysis machine (2), and a waste tank (3), wherein the dialysis machine (2) and the waste tank (3) are located on the support frame (1), characterized in that, The dialysis machine (2) includes a body (21), a peristaltic pump head (22) and a cartridge (23). The peristaltic pump head (22) and the cartridge (23) are inserted into the body (21). The cartridge (23) is used to deliver peritoneal dialysis fluid to the peristaltic pump head (22). The peristaltic pump head (22) includes a housing (221), a rotating component (222), and a "Y"-shaped tube (223). The rotating component (222) is inserted into the housing (221), and two sets of rotating components (222) are symmetrically arranged. The "Y"-shaped tube (223) is snapped between the rotating component (222) and the housing (221), and the "Y"-shaped tube (223) is connected to the cartridge (23).

2. The peritoneal dialysis system according to claim 1, characterized in that, The support frame (1) includes a tray (11), a bottom plate (12) and a top plate (13). The tray (11) is located between the bottom plate (12) and the top plate (13). The tray (11) is used to place the peritoneal dialysis machine (2). The bottom plate (12) is used to place the waste liquid tank (3). A tension sensor (131) is fixedly connected to the bottom of the top plate (13). A hook (132) is fixedly connected to the bottom of the tension sensor (131). Multiple sets of tension sensors (131) and hooks (132) are provided for hanging peritoneal dialysis bags.

3. A peritoneal dialysis system according to claim 2, characterized in that, The support frame (1) is also provided with a clamping member (14), and a clamping rod is inserted into the inner side of the clamping member (14), and the clamping rod is spring-connected to the clamping member (14).

4. A peritoneal dialysis system according to claim 1, characterized in that, The housing (221) has symmetrically arranged arc-shaped slots (2211) on both sides. The slots (2211) have an insertion port (2212) on the front side. A positioning shaft (2213) is inserted into the inner side of the housing (221). A sliding gear (2214) is sleeved on the outer side of the positioning shaft (2213). A shift fork (2215) is clamped on the outer side of the sliding gear (2214). The shift fork (2215) is engaged on the outer side of the positioning shaft (2213).

5. A peritoneal dialysis system according to claim 4, characterized in that, A slider (22151) is inserted into the inner side of the shift fork (2215), and a sliding guide rod (22152) is inserted into the inner side of the slider (22151). The two ends of the sliding guide rod (22152) are inserted into the inner side of the housing (221). An electromagnet (22153) is sleeved on the outer side of the sliding guide rod (22152). The electromagnet (22153) is located on both sides of the slider (22151). The electromagnet (22153) is used to drive the slider (22151) to drive the shift fork (2215) to slide left and right, thereby driving the sliding gear (2214) to slide left and right on the positioning shaft (2213).

6. A peritoneal dialysis system according to claim 4, characterized in that, A transmission rack (2216) is also inserted into the inner side of the housing (221). The transmission rack (2216) is meshed with a sliding gear (2214). The transmission rack (2216) is connected to a power motor.

7. A peritoneal dialysis system according to claim 4, characterized in that, Rollers (2221) are inserted into the inner side of the rotating component (222). Multiple sets of rollers (2221) are arranged in a ring and evenly distributed. The rollers (2221) correspond to the slots (2211). A shaft (2222) is inserted into the inner side of the rotating component (222). The shaft (2222) is inserted into the housing (221). The other end of the shaft (2222) passes through the housing (221) to the inner side of the housing (221). A transmission gear (2223) is sleeved on the outer side of the shaft (2222). The transmission gear (2223) is located inside the housing (221) and can mesh with the sliding gear (2214).

8. A peritoneal dialysis system according to claim 7, characterized in that, The two branches of the "Y"-shaped tube (223) are inserted into the inside of the slot (2211) and are tightly abutted by the roller (2221). One of the two branches is used to connect to the cartridge (23), and the other branch is used to connect to the waste liquid tank (3). The main tube of the "Y"-shaped tube (223) is used to connect to the permanent indwelling tube on the patient.

9. A peritoneal dialysis system according to claim 8, characterized in that, The cartridge (23) is inserted into the inside of the body (21) and heated by the heating module provided inside the body (21). The top of the cartridge (23) is connected to two sets of connecting pipes (231). One set of the connecting pipes (231) is connected to an input pipe (232). The top of the input pipe (232) is connected to a diversion pipe (2321). The diversion pipe (2321) is used to connect to the peritoneal dialysis bag. The other set of the connecting pipes (231) is connected to an output pipe (233). The output pipe (233) is used to connect to a "Y" shaped connecting pipe (223). An "S" shaped passage (234) connecting the two sets of connecting pipes (231) is opened inside the cartridge (23).

10. A method of using a peritoneal dialysis system according to claims 1-9, characterized in that, Includes the following steps: Step 1: Equipment preparation. Place the infusion machine (2) on the tray (11) of the support frame (1), and place the waste liquid tank (3) on the base plate (12). Check the connection status of each component to ensure that the peristaltic pump head (22) and the cartridge (23) are firmly inserted into the machine body (21). Step 2: Piping connection. Hang the peritoneal dialysis bag on the hook (132) of the top plate (13). Connect it to the input pipe (232) of the cartridge (23) through the shunt pipe (2321). Connect the output pipe (233) of the cartridge (23) to one branch of the "Y" shaped tube (223). Connect the other branch of the "Y" shaped tube (223) to the waste liquid tank (3). Connect the main pipe to the patient's permanent indwelling tube. Clamp each pipe through the clamping rod of the clamp (14). Step 3: Parameter setting, start the peritoneal dialysis machine (2), set the peritoneal dialysis fluid heating temperature, infusion rate and infusion volume according to the treatment needs, and the tension sensor (131) monitors the weight of the peritoneal dialysis fluid bag in real time and feeds it back to the control system; Step 4: Peritoneal dialysis fluid heating. The heating module inside the body (21) heats the cartridge (23). The peritoneal dialysis fluid enters the "S"-shaped passage (234) of the cartridge (23) through the shunt tube (2321) and the inlet tube (232) to achieve uniform heating. Step 5: During the infusion process, the control system starts the power motor, which drives the transmission rack (2216) to rotate. The electromagnet (22153) drives the slider (22151) to slide the fork (2215), so that the sliding gear (2214) meshes with the transmission gear (2223) connected to the rotating part (222) on the infusion side. The roller (2221) of the rotating part (222) squeezes the infusion branch of the "Y"-shaped tube (223) to deliver the heated peritoneal dialysis fluid to the patient's abdominal cavity. Step 6: Drainage process. After the infusion is completed, the control system controls the electromagnet (22153) to switch the sliding gear (2214) to mesh with the transmission gear (2223) connected to the rotating part (222) on the drainage side. The rotating part (222) drives the roller (2221) to squeeze the drainage branch of the "Y" shaped tube (223) and drain the waste fluid in the patient's abdominal cavity into the waste fluid bucket (3). Step 7: After the treatment is completed and the fluid is drained, turn off the infusion machine (2), disassemble each pipeline in turn, and clean and disinfect the equipment.

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