A hemodialysis device with facilitated temperature control

Abstract

The application discloses a hemodialysis device convenient for temperature control and relates to the field of medical equipment. The hemodialysis device comprises a hemodialysis instrument, a blood conveying pump and a dialyzer arranged on the outer wall of the hemodialysis instrument, and a temperature control device arranged on the outer wall of the hemodialysis instrument. The temperature control device comprises a temperature control box arranged on the outer wall of the hemodialysis instrument, a partition plate arranged in the temperature control box, and a blood shunt pipe arranged in the temperature control box and connected with the blood discharge end of the dialyzer. The hemodialysis device further comprises a shunt pipe extrusion component arranged on the outer wall of the temperature control box and extending into the temperature control box, a pressing plate arranged on the execution end of the shunt pipe extrusion component, a heating length control component arranged on the outer wall of the pressing plate, and a heat conduction component arranged on the execution end of the heating length control component and the outer wall of the partition plate. The hemodialysis device further comprises a heating medium conveying device and a low-temperature medium conveying device arranged on the outer wall of the hemodialysis instrument. The hemodialysis device is convenient for accurately and quickly regulating the temperature of the blood of a patient with backflow.

Description

Technical Field

[0001] This invention relates primarily to the technical field of medical devices, specifically a hemodialysis device that facilitates temperature control. Background Technology

[0002] Precise temperature control of the blood is necessary during hemodialysis. High-temperature dialysis may cause cerebral vasodilation, leading to cerebral hypoxia, which manifests as headache or even confusion. Low-temperature dialysis will cause the patient's body temperature to drop, triggering chills, skin vasoconstriction, and even inducing muscle spasms and subjective discomfort. Therefore, temperature control of the blood is essential during hemodialysis.

[0003] Existing dialysis equipment includes a dialysate tank, a hot water tank, a dialysis tank, and a control cabinet. The hot water tank contains a stirring structure, an insulation jacket, an electric heater, and a temperature sensor. The hot water tank is connected to the dialysate tank and the dialysis tank via pipelines. A hot water pump pumps hot water into the hot water jacket of the dialysate tank and the dialysis tank. The control cabinet contains an alarm, a touch screen, buttons, a frequency converter, and input / output terminals. This technology achieves constant blood and dialysate temperature and flow rate, which is beneficial for the stability of the dialysis process. It also uses an intelligent programmable PLC controller to monitor and adjust the temperature, flow rate, and related technical parameters of the dialysate and blood in real time, which is beneficial for the safety and quality assurance of dialysis.

[0004] Existing dialysis equipment achieves constant temperature and flow rate of blood and dialysate, which is beneficial for the stability of the dialysis process, but it is not convenient for precise and rapid temperature control of the blood returning to the patient. Summary of the Invention

[0005] Therefore, the purpose of this invention is to provide a hemodialysis device that is easy to control temperature, so as to solve the technical problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a hemodialysis device that facilitates temperature control, comprising a hemodialysis machine, a blood delivery pump and a dialyzer disposed on the outer wall of the hemodialysis machine, and a temperature control device disposed on the outer wall of the hemodialysis machine, the temperature control device comprising a temperature control box disposed on the outer wall of the hemodialysis machine, a partition disposed in the temperature control box, and a blood diversion tube disposed in the temperature control box and whose inlet end is connected to the blood outlet end of the dialyzer;

[0007] It also includes a shunt tube extrusion component disposed on the outer wall of the temperature control box and whose execution end extends into the temperature control box, a pressure plate disposed on the execution end of the shunt tube extrusion component, a heating length adjustment component disposed on the outer wall of the pressure plate, and a heat-conducting component disposed on the execution end of the heating length adjustment component and the outer wall of the partition.

[0008] It also includes a heating medium delivery device and a low temperature medium delivery device disposed on the outer wall of the hemodialysis machine. Both the heating medium delivery device and the low temperature medium delivery device are used to circulate the temperature control medium into the heat-conducting component.

[0009] Preferably, the blood diversion tube includes an inlet pipe disposed on the outer wall of the partition and located on the side of the partition away from the pressure plate, an outlet pipe disposed outside the temperature control box and located on the side of the partition close to the pressure plate, and a plurality of diversion pipes connected at one end to the inlet pipe and at the other end through the partition and connected to the outlet pipe;

[0010] The inlet tube is connected to the blood outlet of the dialyzer via a conduit. In this preferred embodiment, blood is diverted via a blood shunt tube, which facilitates rapid temperature adjustment after blood diversion.

[0011] Preferably, the heat-conducting component includes a plurality of first square heat-conducting tubes disposed on the outer wall of the partition, two limiting vertical plates symmetrically disposed on both sides of the first square heat-conducting tubes, and a plurality of second square heat-conducting tubes disposed at the execution end of the heating length adjustment component.

[0012] The outer walls of both the first and second square heat-conducting tubes are in contact with the liquid distribution tube. In this preferred embodiment, heat conduction during blood temperature regulation is achieved through heat-conducting components.

[0013] Preferably, the heating length control component includes a movable plate slidably connected to the outer wall of the pressure plate, a linear module disposed on the outer wall of the pressure plate and used to drive the movable plate to move, and a peeler disposed on the end of the second square heat-conducting tube away from the dialyzer.

[0014] The outer wall of the movable plate is connected to the second square heat-conducting pipe. In this preferred embodiment, the heating length adjustment component facilitates control of the heat conduction length when adjusting blood temperature.

[0015] Preferably, the stripper includes a guide frame with one end hinged to the second square heat-conducting tube, and a guide roller disposed on the guide frame;

[0016] The dispensing tube passes through the guide frame, and its outer wall contacts the guide roller. In this preferred embodiment, the dispensing tube, which facilitates blood transfer, is detached from the heat-conducting component via a peeler.

[0017] Preferably, the shunt tube squeezing component includes multiple conduits disposed on the outer wall of the temperature control box and communicating with the temperature control box, a guide post with one end connected to the outer wall of the pressure plate and the other end extending into the conduit, and an electric cylinder disposed on the outer wall of the temperature control box with its actuating end penetrating the temperature control box, the actuating end of the electric cylinder being connected to the pressure plate. In this preferred embodiment, the shunt tube squeezing component facilitates squeezing of the blood-transmitting shunt tube to change the heat conduction area.

[0018] Preferably, the heating medium delivery device includes a storage box disposed on the outer wall of the hemodialysis machine, and a reflux chamber, a water temperature control chamber, and a constant temperature water chamber disposed sequentially from top to bottom in the storage box;

[0019] The bottom of the reflux chamber and the water temperature control chamber are equipped with an electric control valve. The outer wall of the storage tank is equipped with a micro water pump with a water inlet end connected to the constant temperature water chamber through a pipe. The drain end of the micro water pump is equipped with a flow sensor. The water temperature control chamber and the constant temperature water chamber are equipped with a temperature sensor and a heater.

[0020] The drain end of the micro water pump is connected to the inlet end of the first square heat-conducting tube and the second square heat-conducting tube via a pipe and a solenoid valve. The reflux chamber is connected to the drain end of the first square heat-conducting tube and the second square heat-conducting tube via a pipe and a solenoid valve.

[0021] The cryogenic medium conveying device has the same structure as the heating medium conveying device. In this preferred embodiment, the heating medium is conveyed and supplied through the heating medium conveying device, and the cryogenic medium is conveyed and supplied through the cryogenic medium conveying device.

[0022] Preferably, the system further includes a homogenizing component located at the top of the storage tank and extending its actuating end into the storage tank. The homogenizing component includes a drive motor located at the top of the storage tank, a shaft with one end connected to the actuating end of the drive motor and the other end sequentially passing through the reflux chamber and the water temperature control chamber and rotatably connected to the bottom of the inner wall of the constant temperature water chamber, and multiple stirring rods located on the outer wall of the shaft and within the water temperature control chamber and the constant temperature water chamber. In this preferred embodiment, the homogenizing component facilitates the agitation of the heat transfer medium within the storage tank, thereby maintaining a uniform temperature within the heat transfer medium.

[0023] Preferably, the device further includes a first temperature monitoring module located at the blood inlet end of the blood delivery pump, a second temperature monitoring module located at the blood outlet end of the temperature control device, and a third temperature monitoring module for monitoring the core temperature of the hemodialysis patient. In this preferred embodiment, the first temperature monitoring module facilitates obtaining the temperature of the dialysis blood when it enters the hemodialysis machine, the second temperature monitoring module facilitates obtaining the temperature of the blood before it returns to the dialysis patient, and the third temperature monitoring module facilitates obtaining the core body temperature of the dialysis patient.

[0024] Preferably, the device further includes a first temperature monitoring module, a second temperature monitoring module, a third temperature monitoring module, and a control center for the temperature control device. The control center includes a temperature monitoring module, a heat transfer control module, a flow control module, a contact area control module, and a contact length control module. In this preferred embodiment, the control center enables the acquisition and analysis of temperature data, as well as the transmission of temperature control electrical signals.

[0025] In summary, the present invention has the following main beneficial effects:

[0026] The hemodialysis device of this invention facilitates precise and rapid temperature control of the blood returning to the patient. Traditional dialysis machines often use fixed heat exchangers or a single heating rod, controlling temperature solely by adjusting the medium temperature or flow rate. This approach cannot cope with temperature fluctuations caused by variables such as blood flow rate and ambient temperature.

[0027] This application achieves dynamic adjustment in four dimensions: contact area, contact length, medium flow rate, and temperature difference. It integrates three temperature monitoring points: blood inlet, outlet, and patient core body temperature. Combined with the control center algorithm, it enables predictive adjustment rather than passive response.

[0028] Parallel design of the distribution tubes: The blood is divided into multiple fine streams. The flow rate of a single distribution tube is low and the heat exchange efficiency is high, avoiding laminar flow. At the same time, the length of a single tube is shortened, reducing the probability of clotting.

[0029] Variable contact area or length design: The contact area is increased by squeezing the liquid distribution tube with a pressure plate, or the effective contact length is reduced by a peeler. The total heat exchange can be adjusted without changing the blood flow rate, and the response speed is improved by more than 50% compared with traditional technology.

[0030] The heating or cooling medium conveying device is designed to operate independently: the heating or cooling mode can be switched within seconds by switching via a solenoid valve;

[0031] External temperature control box design: It can be directly installed on the outer wall of the existing dialysis machine without modifying the main unit structure; the blood shunt tube matches the standard interface of the dialyzer drain end, and the modification can be completed in a short time. Attached Figure Description

[0032] Figure 1 This is an isometric view of the overall structure of the device of the present invention;

[0033] Figure 2 This is an isometric view of the hemodialysis device structure of the present invention;

[0034] Figure 3 This is an isometric view of the temperature control device, the heating medium conveying device, and the low-temperature medium conveying device of the present invention;

[0035] Figure 4 This is an exploded view of the structure of the diverter tube extrusion component of the present invention;

[0036] Figure 5 This is an exploded view of the overall structure of the temperature control device of the present invention;

[0037] Figure 6 This is an isometric view of the overall structure of the blood shunt tube of the present invention;

[0038] Figure 7 This is an isometric view of the heating length adjustment component of the present invention;

[0039] Figure 8 This is an exploded view of the structure of the heating medium conveying device and the low temperature medium conveying device of the present invention;

[0040] Figure 9 This is a front view of the overall structure of the device of the present invention;

[0041] Figure 10 For the present invention Figure 7 Enlarged view of the structure at point A;

[0042] Figure 11 This is a system structure framework diagram of the present invention.

[0043] Figure Descriptions: 10. Hemodialysis machine; 11. Blood transfer pump; 111. First temperature monitoring module; 12. Dialyzer; 20. Temperature control device; 201. Second temperature monitoring module; 21. Temperature control box; 211. Partition; 22. Blood shunt tube; 221. Inlet tube; 222. Drain tube; 223. Dispensing tube; 23. Shutter tube squeezing component; 231. Catheter; 232. Guide column; 233. Electric cylinder; 24. Pressure plate; 25. Heating length adjustment component; 251. Moving plate; 252. Linear module; 253. 2531. Stripper; 2532. Guide frame; 2533. Guide roller; 26. Heat-conducting component; 261. First square heat-conducting pipe; 262. Limiting vertical plate; 263. Second square heat-conducting pipe; 30. Heating medium conveying device; 31. Storage tank; 32. Return chamber; 33. Water temperature control chamber; 34. Constant temperature water chamber; 35. Electrically controlled valve; 36. Miniature water pump; 37. Flow sensor; 38. Mixing component; 381. Drive motor; 382. Shaft; 383. Stirring rod; 40. Low temperature medium conveying device; 50. Third temperature monitoring module. Detailed Implementation

[0044] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0045] The embodiments of the present invention will now be described.

[0046] Please refer to the appendix in this embodiment. Figure 1 , 2 As shown in Figures 9 and 11, in a preferred embodiment of the present invention, a hemodialysis device with convenient temperature control includes a hemodialysis machine 10, a blood delivery pump 11 and a dialyzer 12 disposed on the outer wall of the hemodialysis machine 10, and a temperature control device 20 disposed on the outer wall of the hemodialysis machine 10. It also includes a first temperature monitoring module 111 disposed at the blood inlet end of the blood delivery pump 11, a second temperature monitoring module 201 disposed at the blood outlet end of the temperature control device 20, and a third temperature monitoring module 50 for monitoring the core temperature of the hemodialyzer patient. Furthermore, it includes a control center that is telecommunication-connected to the first temperature monitoring module 111, the second temperature monitoring module 201, the third temperature monitoring module 50, and the temperature control device 20. The control center includes a temperature monitoring module, a heat medium delivery control module, a flow control module, a contact area control module, and a contact length control module.

[0047] It should be noted that in this embodiment, when a patient undergoes hemodialysis, the medical staff first inserts a needle into the patient's arteriovenous fistula. Blood enters the dialyzer 12 under the action of the blood delivery pump 11. Inside the dialyzer 12, under the action of diffusion and ultrafiltration, impurities in the blood enter the dialysate through the semipermeable membrane. The purified blood is returned to the patient's body after the temperature is adjusted by the temperature control device 20.

[0048] When regulating blood temperature:

[0049] The temperature monitoring module receives the first blood temperature information measured by the first temperature monitoring module 111, the second blood temperature information measured by the second temperature monitoring module 201, and the core body temperature information of the dialysis patient measured by the third temperature monitoring module 50, and obtains the blood temperature regulation information after analysis.

[0050] The heat medium delivery control module triggers the heating medium delivery device 30 or the low temperature medium delivery device 40 to deliver the heat conduction medium based on the blood temperature regulation information.

[0051] The flow control module adjusts the power supply of the micro water pump 36 according to the blood temperature regulation information until the flow data measured by the flow sensor 37 matches the set value.

[0052] The contact area control module triggers the shunt tube squeezing component 23 based on the blood temperature adjustment information to adjust the contact area between the heat-conducting component 26 and the liquid distribution tube 223;

[0053] The contact length control module is used to trigger the heating length adjustment component 25 according to the blood temperature adjustment information to adjust the contact length between the heat-conducting component 26 and the liquid distribution tube 223;

[0054] Furthermore, important factors affecting changes in blood temperature include: the contact area between blood and the heat medium, the contact time, the temperature difference, the blood flow rate, the flow rate of the heat medium, and the heat conduction efficiency of the heat-conducting component 26.

[0055] The heat conduction efficiency of the heat-conducting component 26 and the temperature difference between the blood and the heat medium can be regarded as fixed values ​​to ensure that the flow rate of the heat medium is consistent with the flow rate of the blood. At this time, the blood temperature can be precisely adjusted by adjusting the contact area and contact time between the blood and the heat medium.

[0056] Please refer to the appendix carefully. Figure 3 , 4As shown in Figures 5, 6, 7, and 10, in another preferred embodiment of the present invention, the temperature control device 20 includes a temperature control box 21 disposed on the outer wall of the hemodialysis machine 10, a partition 211 disposed within the temperature control box 21, and a blood diversion tube 22 disposed within the temperature control box 21 with its inlet end connected to the blood outlet end of the dialyzer 12; it also includes a diversion tube squeezing component 23 disposed on the outer wall of the temperature control box 21 with its actuating end extending into the temperature control box 21, a pressure plate 24 disposed at the actuating end of the diversion tube squeezing component 23, a heating length adjustment component 25 disposed on the outer wall of the pressure plate 24, and a heat-conducting component 26 disposed at the actuating end of the heating length adjustment component 25 and on the outer wall of the partition 211; it also includes a blood diversion tube 22 disposed within the hemodialysis machine 10. The heating medium delivery device 30 and the low-temperature medium delivery device 40 are located on the outer wall of the instrument 10. Both the heating medium delivery device 30 and the low-temperature medium delivery device 40 are used to circulate the temperature control medium into the heat-conducting component 26. The blood diversion tube 22 includes an inlet pipe 221 located on the outer wall of the partition 211 and on the side of the partition 211 away from the pressure plate 24, an outlet pipe 222 located outside the temperature control box 21 and on the side of the partition 211 close to the pressure plate 24, and a plurality of diversion pipes 223 connected at one end to the inlet pipe 221 and at the other end through the partition 211 and connected to the outlet pipe 222. The inlet pipe 221 is connected to the blood discharge end of the dialyzer 12 through a pipe. The heat-conducting component 26 includes... The device includes a plurality of first square heat-conducting tubes 261 disposed on the outer wall of the partition 211, two limiting vertical plates 262 symmetrically disposed on both sides of the first square heat-conducting tubes 261, and a plurality of second square heat-conducting tubes 263 disposed on the execution end of the heating length regulating component 25; the outer walls of the first square heat-conducting tubes 261 and the second square heat-conducting tubes 263 are in contact with the dispensing pipe 223; the heating length regulating component 25 includes a moving plate 251 slidably connected to the outer wall of the pressure plate 24, a linear module 252 disposed on the outer wall of the pressure plate 24 and used to drive the moving plate 251 to move, and a stripper 253 disposed on the end of the second square heat-conducting tubes 263 away from the dialyzer 12; the outer wall of the moving plate 251 is in contact with the dispensing pipe 223. The second square heat-conducting tube 263 is connected to the stripper 253, which includes a guide frame 2531 with one end hinged to the second square heat-conducting tube 263, and a guide roller 2532 disposed on the guide frame 2531; the liquid distribution tube 223 passes through the guide frame 2531, and the outer wall of the liquid distribution tube 223 contacts the guide roller 2532; the diversion tube extrusion component 23 includes a plurality of conduits 231 disposed on the outer wall of the temperature control box 21 and communicating with the temperature control box 21, a guide post 232 with one end connected to the outer wall of the pressure plate 24 and the other end extending into the conduit 231, and an electric cylinder 233 disposed on the outer wall of the temperature control box 21 and whose actuating end passes through the temperature control box 21, the actuating end of the electric cylinder 233 being connected to the pressure plate 24.

[0057] It should be noted that, in this embodiment, when the temperature control device 20 is working, the blood purified by the dialyzer 12 enters the inlet pipe 221, is divided by multiple dispensing pipes 223 and then enters the outlet pipe 222, and is finally discharged through the outlet pipe 222. The heat-conducting component 26 can conduct heat to the dispensing pipe 223, the dispensing pipe squeezing component 23 can squeeze and deform the dispensing pipe 223 to change the contact area between the dispensing pipe 223 and the heat-conducting component 26, and the heating length adjustment component 25 can adjust the contact length between the dispensing pipe 223 and the heat-conducting component 26.

[0058] Furthermore, when the heat-conducting component 26 is in use, both the first square heat-conducting pipe 261 and the second square heat-conducting pipe 263 can carry a heat transfer medium, and the first square heat-conducting pipe 261 and the second square heat-conducting pipe 263 can heat up or cool down the liquid distribution pipe 223 through the heat transfer medium.

[0059] Furthermore, when the distributor tube extrusion component 23 is working, the electric cylinder 233 drives the pressure plate 24 to move, so that the second square heat-conducting tube 263 extrudes the distributor tube 223. The greater the extrusion deformation of the distributor tube 223, the larger the contact area.

[0060] Furthermore, when the heating length control component 25 is working, the execution end of the linear module 252 drives the second square heat conduction tube 263 to move, and the peeler 253 can peel off the liquid distribution tube 223 so that the liquid distribution tube 223 is separated from the first square heat conduction tube 261, thereby reducing the length of the liquid distribution tube 223 between the first square heat conduction tube 261 and the second square heat conduction tube 263.

[0061] When the stripper 253 is working, as the second square heat-conducting tube 263 moves, the guide roller 2532 and the guide frame 2531 guide the liquid distribution tube 223. When the second square heat-conducting tube 263 squeezes the liquid distribution tube 223, the guide frame 2531 can rotate around the hinge point between it and the second square heat-conducting tube 263.

[0062] Please refer to the appendix carefully. Figure 1 , 8As shown, in another preferred embodiment of the present invention, the heating medium delivery device 30 includes a storage tank 31 disposed on the outer wall of the hemodialysis machine 10, and a reflux chamber 32, a water temperature control chamber 33, and a constant temperature water chamber 34 sequentially disposed in the storage tank 31 from top to bottom; the bottom of the reflux chamber 32 and the water temperature control chamber 33 are each provided with an electrically controlled valve 35; the outer wall of the storage tank 31 is provided with a micro water pump 36 whose water inlet is connected to the constant temperature water chamber 34 through a pipe; the drain end of the micro water pump 36 is provided with a flow sensor 37; the water temperature control chamber 33 and the constant temperature water chamber 34 are each provided with a temperature sensor and a heater; the drain end of the micro water pump 36 is connected to the liquid inlet end of the first square heat-conducting pipe 261 and the second square heat-conducting pipe 263 through a pipe and a solenoid valve. The reflux chamber 32 is connected to the drain ends of the first square heat-conducting pipe 261 and the second square heat-conducting pipe 263 via pipes and solenoid valves. The low-temperature medium conveying device 40 has the same structure as the heating medium conveying device 30, and also includes a homogenizing component 38 located on the top of the storage tank 31 and extending into the storage tank 31. The homogenizing component 38 includes a drive motor 381 located on the top of the storage tank 31, a shaft 382 with one end connected to the execution end of the drive motor 381 and the other end passing through the reflux chamber 32 and the water temperature control chamber 33 and rotatably connected to the bottom of the inner wall of the constant temperature water chamber 34, and a plurality of stirring rods 383 located on the outer wall of the shaft 382 and within the water temperature control chamber 33 and the constant temperature water chamber 34.

[0063] It should be noted that in this embodiment, the working principle of the heating medium conveying device 30 and the low temperature medium conveying device 40 is the same. Taking the operation of the heating medium conveying device 30 as an example, when the micro water pump 36 is turned on, the hot medium in the constant temperature water chamber 34 enters the first square heat conduction pipe 261 and the second square heat conduction pipe 263 through the pipe. The hot medium discharged through the first square heat conduction pipe 261 and the second square heat conduction pipe 263 returns to the return chamber 32 through the pipe.

[0064] After a unit of time, the electrically controlled valve 35 at the bottom of the return chamber 32 opens, and the hot medium enters the water temperature control chamber 33. The control center receives the temperature information measured by the temperature sensor in the water temperature control chamber 33, and triggers the heater in the water temperature control chamber 33 to heat the water until the temperature of the hot medium in the water temperature control chamber 33 is consistent with the temperature of the hot medium in the constant temperature water chamber 34. Then, the electrically controlled valve 35 at the bottom of the water temperature control chamber 33 opens, and the hot medium in the water temperature control chamber 33 enters the constant temperature water chamber 34.

[0065] The control center receives temperature information measured by the temperature sensor inside the constant temperature water chamber 34, and triggers the heater inside the constant temperature water chamber 34 to work when the temperature information is lower than the set value, so as to ensure the temperature of the heat medium inside the constant temperature water chamber 34.

[0066] Furthermore, the drive motor 381 drives the shaft 382 to rotate, and the shaft 382 stirs the heat medium in the water temperature control chamber 33 and the constant temperature water chamber 34 through the stirring rod 383 to ensure that the temperature of the heat medium is uniform.

[0067] The working principle of this invention is as follows:

[0068] When a patient undergoes hemodialysis, medical staff first insert a needle into the patient's arteriovenous fistula. Blood enters the dialyzer 12 under the action of blood delivery pump 11. Inside the dialyzer 12, under the action of diffusion and ultrafiltration, impurities in the blood enter the dialysate through the semipermeable membrane. The purified blood is returned to the patient's body after the temperature is adjusted by temperature control device 20.

[0069] When regulating blood temperature:

[0070] The temperature monitoring module receives the first blood temperature information measured by the first temperature monitoring module 111, the second blood temperature information measured by the second temperature monitoring module 201, and the core body temperature information of the dialysis patient measured by the third temperature monitoring module 50, and obtains the blood temperature regulation information after analysis.

[0071] The heat medium delivery control module triggers the heating medium delivery device 30 or the low temperature medium delivery device 40 to deliver the heat conduction medium based on the blood temperature regulation information.

[0072] The flow control module adjusts the power supply of the micro water pump 36 according to the blood temperature regulation information until the flow data measured by the flow sensor 37 matches the set value.

[0073] The contact area control module triggers the shunt tube squeezing component 23 based on the blood temperature adjustment information to adjust the contact area between the heat-conducting component 26 and the liquid distribution tube 223;

[0074] The contact length control module is used to trigger the heating length adjustment component 25 according to the blood temperature adjustment information to adjust the contact length between the heat-conducting component 26 and the liquid distribution tube 223;

[0075] Furthermore, important factors affecting changes in blood temperature include: the contact area between blood and the heat medium, the contact time, the temperature difference, the blood flow rate, the flow rate of the heat medium, and the heat conduction efficiency of the heat-conducting component 26.

[0076] The heat conduction efficiency of the heat-conducting component 26 and the temperature difference between the blood and the heat medium can be regarded as fixed values ​​to ensure that the flow rate of the heat medium is consistent with the flow rate of the blood. At this time, the blood temperature can be precisely adjusted by adjusting the contact area and contact time between the blood and the heat medium.

[0077] When the temperature control device 20 is working, the blood purified by the dialyzer 12 enters the inlet pipe 221, is divided by multiple dispensing pipes 223 and then enters the outlet pipe 222, and is finally discharged through the outlet pipe 222. The heat-conducting component 26 can conduct heat to the dispensing pipe 223, the dispensing pipe squeezing component 23 can squeeze and deform the dispensing pipe 223 to change the contact area between the dispensing pipe 223 and the heat-conducting component 26, and the heating length adjustment component 25 can adjust the contact length between the dispensing pipe 223 and the heat-conducting component 26.

[0078] When the heat-conducting component 26 is in use, both the first square heat-conducting tube 261 and the second square heat-conducting tube 263 can carry a heat transfer medium, and the first square heat-conducting tube 261 and the second square heat-conducting tube 263 can heat up or cool down the liquid distribution tube 223 through the heat transfer medium.

[0079] When the distributor tube extrusion component 23 is working, the electric cylinder 233 drives the pressure plate 24 to move so that the second square heat-conducting tube 263 extrudes the distributor tube 223. The greater the extrusion deformation of the distributor tube 223, the larger the contact area.

[0080] When the heating length control component 25 is working, the linear module 252 actuator drives the second square heat conduction tube 263 to move, and the peeler 253 can peel off the liquid distribution tube 223 so that the liquid distribution tube 223 is separated from the first square heat conduction tube 261, thereby reducing the length of the liquid distribution tube 223 between the first square heat conduction tube 261 and the second square heat conduction tube 263.

[0081] When the stripper 253 is working, as the second square heat-conducting tube 263 moves, the guide roller 2532 and the guide frame 2531 guide the liquid distribution tube 223. When the second square heat-conducting tube 263 squeezes the liquid distribution tube 223, the guide frame 2531 can rotate around the hinge point between itself and the second square heat-conducting tube 263.

[0082] The working principle of the heating medium conveying device 30 is the same as that of the low temperature medium conveying device 40. Taking the operation of the heating medium conveying device 30 as an example, when the micro water pump 36 is turned on, the hot medium in the constant temperature water chamber 34 enters the first square heat conduction pipe 261 and the second square heat conduction pipe 263 through the pipe. The hot medium discharged through the first square heat conduction pipe 261 and the second square heat conduction pipe 263 returns to the return chamber 32 through the pipe.

[0083] After a unit of time, the electrically controlled valve 35 at the bottom of the return chamber 32 opens, and the hot medium enters the water temperature control chamber 33. The control center receives the temperature information measured by the temperature sensor in the water temperature control chamber 33, and triggers the heater in the water temperature control chamber 33 to heat the water until the temperature of the hot medium in the water temperature control chamber 33 is consistent with the temperature of the hot medium in the constant temperature water chamber 34. Then, the electrically controlled valve 35 at the bottom of the water temperature control chamber 33 opens, and the hot medium in the water temperature control chamber 33 enters the constant temperature water chamber 34.

[0084] The control center receives temperature information measured by the temperature sensor inside the constant temperature water chamber 34, and triggers the heater inside the constant temperature water chamber 34 to work when the temperature information is lower than the set value, so as to ensure the temperature of the heat medium inside the constant temperature water chamber 34.

[0085] The drive motor 381 drives the shaft 382 to rotate. The shaft 382 stirs the heat medium in the water temperature control chamber 33 and the constant temperature water chamber 34 through the stirring rod 383 to ensure that the temperature of the heat medium is uniform.

[0086] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the invention and are not intended to limit it. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the invention, but such modifications, substitutions, and variations are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A hemodialysis device with convenient temperature control, comprising a hemodialysis machine (10), a blood delivery pump (11) disposed on the outer wall of the hemodialysis machine (10), a dialyzer (12), and a temperature control device (20) disposed on the outer wall of the hemodialysis machine (10), characterized in that, The temperature control device (20) includes a temperature control box (21) disposed on the outer wall of the hemodialysis machine (10), a partition (211) disposed in the temperature control box (21), and a blood diversion tube (22) disposed in the temperature control box (21) with its inlet end connected to the blood outlet end of the dialyzer (12). It also includes a manifold extrusion component (23) disposed on the outer wall of the temperature control box (21) and whose execution end extends into the temperature control box (21), a pressure plate (24) disposed on the execution end of the manifold extrusion component (23), a heating length adjustment component (25) disposed on the outer wall of the pressure plate (24), and a heat-conducting component (26) disposed on the execution end of the heating length adjustment component (25) and the outer wall of the partition (211). It also includes a heating medium delivery device (30) and a low temperature medium delivery device (40) disposed on the outer wall of the hemodialysis machine (10). The heating medium delivery device (30) and the low temperature medium delivery device (40) are both used to circulate the temperature control medium into the heat-conducting component (26). The blood diversion tube (22) includes an inlet pipe (221) disposed on the outer wall of the partition (211) and located on the side of the partition (211) away from the pressure plate (24), an outlet pipe (222) disposed outside the temperature control box (21) and located on the side of the partition (211) close to the pressure plate (24), and a pipe with one end connected to the inlet pipe (221) and the other end penetrating the partition (211). 1) Multiple dispensing pipes (223) connected to the drain pipe (222); the inlet pipe (221) is connected to the blood discharge end of the dialyzer (12) through a pipe; the heat-conducting component (26) includes multiple first square heat-conducting pipes (261) disposed on the outer wall of the partition (211), two limiting vertical plates (262) symmetrically disposed on both sides of the first square heat-conducting pipes (261), and multiple second square heat-conducting pipes (263) disposed on the execution end of the heating length control component (25); the outer walls of the first square heat-conducting pipes (261) and the second square heat-conducting pipes (263) are in contact with the dispensing pipes (223); the heating length control component (25) includes The device includes a movable plate (251) slidably connected to the outer wall of the pressure plate (24), a linear module (252) disposed on the outer wall of the pressure plate (24) for driving the movable plate (251) to move, and a stripper (253) disposed at the end of the second square heat-conducting tube (263) away from the dialyzer (12); the outer wall of the movable plate (251) is connected to the second square heat-conducting tube (263), and the stripper (253) includes a guide frame (2531) with one end hinged to the second square heat-conducting tube (263), and a guide roller (2532) disposed on the guide frame (2531); the dispensing tube (223) passes through the guide frame (2531), and the dispensing tube... The outer wall of the liquid pipe (223) contacts the guide roller (2532), and also includes a first temperature monitoring module (111) located at the blood inlet end of the blood transfer pump (11), a second temperature monitoring module (201) located at the blood outlet end of the temperature control device (20), and a third temperature monitoring module (50) for monitoring the core temperature of the hemodialysis patient. It also includes a control center that is telecommunication connected to the first temperature monitoring module (111), the second temperature monitoring module (201), the third temperature monitoring module (50), and the temperature control device (20). The control center includes a temperature monitoring module, a heat medium transport control module, a flow control module, a contact area control module, and a contact length control module.

2. The hemodialysis device with convenient temperature control according to claim 1, characterized in that, The shunt extrusion component (23) includes a plurality of conduits (231) disposed on the outer wall of the temperature control box (21) and communicating with the temperature control box (21), a guide post (232) with one end connected to the outer wall of the pressure plate (24) and the other end extending into the conduit (231), and an electric cylinder (233) disposed on the outer wall of the temperature control box (21) and having its actuating end penetrating through the temperature control box (21), wherein the actuating end of the electric cylinder (233) is connected to the pressure plate (24).

3. The hemodialysis device with easy temperature control according to claim 1, characterized in that, The heating medium delivery device (30) includes a storage box (31) disposed on the outer wall of the hemodialysis machine (10), and a reflux chamber (32), a water temperature control chamber (33) and a constant temperature water chamber (34) disposed in the storage box (31) from top to bottom. The bottom of the reflux chamber (32) and the water temperature control chamber (33) are equipped with an electric control valve (35). The outer wall of the storage tank (31) is equipped with a miniature water pump (36) whose water inlet is connected to the constant temperature water chamber (34) through a pipe. The drain end of the miniature water pump (36) is equipped with a flow sensor (37). The water temperature control chamber (33) and the constant temperature water chamber (34) are equipped with a temperature sensor and a heater. The drain end of the micro water pump (36) is connected to the inlet end of the first square heat-conducting tube (261) and the second square heat-conducting tube (263) through a pipe and a solenoid valve. The return chamber (32) is connected to the drain end of the first square heat-conducting tube (261) and the second square heat-conducting tube (263) through a pipe and a solenoid valve. The low-temperature medium conveying device (40) has the same structure as the heating medium conveying device (30).

4. The hemodialysis device with easy temperature control according to claim 3, characterized in that, It also includes a homogenizing component (38) located on the top of the storage tank (31) and extending into the storage tank (31). The homogenizing component (38) includes a drive motor (381) located on the top of the storage tank (31), a shaft (382) with one end connected to the execution end of the drive motor (381) and the other end passing through the reflux chamber (32) and the water temperature control chamber (33) in sequence and rotatably connected to the bottom of the inner wall of the constant temperature water chamber (34), and multiple stirring rods (383) located on the outer wall of the shaft (382) and in the water temperature control chamber (33) and the constant temperature water chamber (34).

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