A temperature-controlled assembly and pumping temperature-controlled system for bladder irrigation and hot perfusion

Abstract

This application relates to the field of medical device technology, and in particular to a temperature control component and pump temperature control system for bladder irrigation and hyperthermic perfusion. The system includes a chassis and a temperature control rod assembly. A columnar channel is provided on one side of the chassis. The temperature control rod assembly is disposed within the columnar channel and includes a telescopic drive and a temperature control shaft. A threaded limiting groove is provided on the outer surface of the temperature control shaft, and a thin-film heating layer is also provided on its outer surface. The temperature control shaft is hollow inside. The drive shaft of the telescopic drive extends into the interior of the temperature control shaft and is connected and fixed to the inner wall of one end of the temperature control shaft. An annular temperature control gap is formed between the drive shaft of the telescopic drive and the temperature control shaft. A cooling component for absorbing the temperature of the temperature control shaft is disposed within the temperature control gap. Utilizing the low thermal inertia of the thin-film heating layer and the active temperature suppression capability of the cooling component, the two work together to enable the temperature control shaft to achieve rapid heating and cooling switching and precise temperature maintenance within a narrow temperature window.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to a temperature control component and pump temperature control system for bladder irrigation and hot perfusion. Background Technology

[0002] Bladder irrigation is a common urinary system care and treatment method, mainly used to remove blood clots, mucus, bacteria and other foreign objects from the bladder, maintain unobstructed urine drainage, prevent and treat urinary tract infections, and reduce urinary tract obstruction. It is often used to treat diseases such as urinary tract stones, prostatitis, and cystitis. In addition, hyperthermic intravesical chemotherapy is a new treatment method developed based on conventional intravesical chemotherapy. It involves heating chemotherapy drugs and then circulating them into the bladder at a constant temperature. The synergistic effect of hyperthermic chemotherapy is used to kill residual tumor cells, and it is mainly used to prevent recurrence after bladder cancer surgery.

[0003] Existing technologies involve a control method, device, medium, and equipment for bladder hyperthermic perfusion therapy. By acquiring temperature, pressure, and flow rate parameters of multiple parts in the bladder hyperthermic perfusion therapy equipment, including a heating device, a pressurizing device, a hyperthermic perfusion circulation pipeline, a reservoir, and the bladder, the bladder hyperthermic perfusion therapy is controlled based on the real-time changes in the temperature, pressure, and flow rate parameters of these multiple parts.

[0004] In the aforementioned and existing bladder care and treatment protocols, the lack of pressure and temperature regulation functions in the irrigation device makes it impossible to effectively control the pressure and temperature during the irrigation process. At the same time, even if the hot irrigation device can measure the temperature, it is difficult to control the heating temperature with high precision because the liquid bag needs to be heated in a centralized water bath. Furthermore, when real-time temperature adjustment is required, the accuracy of temperature adjustment is not high due to the influence of thermal inertia. Summary of the Invention

[0005] This application provides a temperature control component and a pump temperature control system for bladder irrigation and hot perfusion, which can solve the problem that existing treatment equipment cannot simultaneously perform bladder irrigation and hot perfusion functions, and it is difficult to perform high-precision temperature control and adjustment according to actual conditions.

[0006] The technical solution of this application is as follows: A temperature control component for bladder irrigation and hyperthermic instillation, comprising: The chassis has a columnar channel on one side inside; A temperature control rod assembly is disposed within the columnar channel. The temperature control rod assembly includes a telescopic drive component and a temperature control shaft head. The outer surface of the temperature control shaft head is provided with a threaded limiting groove and a thin film heating layer. The temperature control shaft head is hollow inside. The drive shaft of the telescopic drive component extends into the interior of the temperature control shaft head and is connected and fixed to the inner wall of one end of the temperature control shaft head. An annular temperature control gap is formed between the drive shaft of the telescopic drive component and the temperature control shaft head. A cooling component for absorbing heat from the temperature control shaft head is provided in the temperature control gap.

[0007] By adopting the above solution, the temperature control shaft head can extend or retract into the chassis along the columnar channel via the telescopic drive component. When extended, it is convenient to wind and assemble the consumable pipeline along the limiting groove. When retracted, the temperature control shaft head is stored inside the chassis, reducing the exposure of high-temperature components. Meanwhile, the thin film heating layer is set on the surface of the temperature control shaft head, so that the heat source is directly adjacent to the outer wall contact area of ​​the winding pipe in the limiting groove, which shortens the heat transfer path between the heat source and the outer wall of the pipe and improves the heating response speed. At the same time, the cooling component is set in the annular temperature control gap, which can actively absorb the residual heat accumulated in the temperature control shaft head when heating stops or when the temperature is detected to be too high, suppressing the temperature lag overshoot of the temperature control shaft head caused by thermal inertia. It can also form radial support for the inner wall of the temperature control shaft head, reducing the radial sway that may occur during the winding pipe operation and running. By utilizing the low thermal inertia of the thin-film heating layer and the active temperature suppression capability of the cooling components, the temperature control head can achieve rapid temperature switching and precise temperature maintenance within a narrow temperature window, thereby improving the accuracy of temperature control and adjustment of existing treatment equipment according to the temperature requirements of bladder irrigation and hyperthermic perfusion treatment modes.

[0008] In one embodiment of this application, the chassis has limiting grooves for placing consumable pipelines on both sides of the columnar channel. One end of the limiting groove is connected to the columnar channel, and the other end extends horizontally along the radial direction of the columnar channel.

[0009] By adopting the above scheme, one end of the limiting groove is connected to the columnar channel, and the other end extends horizontally along the radial direction of the columnar channel, providing a radial guiding and constraining channel for the consumable pipeline when entering and exiting the columnar channel. This allows the pipeline to be laterally limited and positioned by the limiting groove in the transition section between the winding area and the non-winding area. At the same time, the pipeline will not kink or derail due to axial displacement during the extension and retraction of the temperature control shaft head along the columnar channel, thus improving the stability of the device operation.

[0010] In one embodiment of this application, the temperature control shaft head includes: The end cover has clamping ears on both sides of one end facing the outside of the chassis. The side wall shape of the end cover matches the columnar channel. The drive shaft of the telescopic drive is coaxially connected and fixed to the end cover to drive the temperature control shaft head to extend or retract into the columnar channel. A metal heating cylinder is disposed at one end of the end cap and extends horizontally into the interior of the housing. A limiting groove is disposed on the outside of the metal heating cylinder and extends along the length direction of the metal heating cylinder. A thin film heating layer is disposed on the outside of the metal heating cylinder.

[0011] By adopting the above solution, and by setting the side wall shape of the end cap to match the columnar channel, a sealing fit is formed on the opening end face of the columnar channel when the temperature control shaft head is retracted, reducing the possibility of external liquids or foreign objects entering the chassis through the columnar channel. In addition, the clamping ears provided on both sides of one end of the end cap provide positioning clamps for the consumable tubing at the beginning and end of the winding, thereby reducing the possibility that the end of the tubing may come out of the limiting groove due to the pulsating force of the liquid flow or the pulling force of the external force. Meanwhile, the metal heating cylinder extends horizontally from the end cap into the chassis, and the limiting grooves are distributed along the length of the metal heating cylinder, so that the consumable pipelines are wound in a spiral path along the axial direction of the metal heating cylinder; the thin film heating layer is set on the outside of the metal heating cylinder and covers the area distributed by the limiting grooves, so that the heat generated by the thin film heating layer is conducted axially to the outer wall of the pipeline in the limiting groove through the cylinder wall of the metal heating cylinder, which improves the heating uniformity between each coil of pipelines.

[0012] In one embodiment of this application, the cooling component includes: A nested cylinder, the length of which is greater than the length of the temperature control gap, and a plurality of cooling plates are provided on the upper surface of the nested cylinder to cooperate with the thin film heating layer to control the temperature of the metal heating cylinder; A retaining ring is coaxially sleeved on the outside of the end of the nested cylinder away from the end cover, and the retaining ring is connected and fixed to the inside of the chassis.

[0013] By adopting the above scheme, the length of the nested cylinder is greater than the length of the temperature control gap, so that when the temperature control shaft head retracts into the machine housing, the nested cylinder can extend axially into the inner cavity of the metal heating cylinder and cover the main area of ​​the metal heating cylinder along the length direction. When the temperature control shaft head extends out of the machine housing, the front end of the nested cylinder is still set in the annular gap to provide radial support. This allows the device to ensure active temperature control capability and reduce the possibility of radial deflection of the nested cylinder. In addition, the cooling element and the thin-film heating layer work together to control the temperature of the metal heating cylinder. The thin-film heating layer inputs heat from the outside of the metal heating cylinder to the cylinder wall, while the cooling element extracts residual heat from the inside of the metal heating cylinder to the cylinder wall. The two work together to regulate the temperature from the inside and outside of the cylinder wall, which helps to improve the accuracy of temperature control and regulation.

[0014] In one embodiment of this application, the nesting cylinder is a heat-insulating material component, the cooling element is an arc-shaped component adapted to the inner wall shape of the metal heating cylinder, the outer circumference of the nesting cylinder is provided with a plurality of mutually spaced arc-shaped grooves, the cooling elements are correspondingly disposed inside the arc-shaped grooves, the cold end of the cooling element faces the metal heating cylinder, the cooling assembly also includes a liquid cooling head, the liquid cooling head is embedded inside the nesting cylinder and located on the lower surface of the hot end of the cooling element.

[0015] By adopting the above scheme, the waste heat accumulated at the hot end of the cooling chip is continuously removed by setting a liquid cooling head. The nested cylinder is made of heat-insulating material, forming a thermal barrier in the radial direction between the cold and hot ends of the cooling chip. This reduces the possibility of heat absorbed by the cold end being transferred back to the hot end through the nested cylinder body, and heat from the hot end being transferred back to the metal heating cylinder. In addition, the curved cooling chip, whose curved surface matches the curvature of the inner wall of the metal heating cylinder, increases the effective contact area between the cold end and the metal heating cylinder compared to planar contact, thereby increasing the heat absorption per unit time.

[0016] In one embodiment of this application, the nested cylinder is a metal heat-conducting component, the cooling chip is a sheet-like component, the cooling chips are circumferentially disposed on the other end face of the end cap and spaced apart from each other, and the cold end of the cooling chip faces the end cap.

[0017] By adopting the above scheme, the cooling plates are arranged in a circumferential manner on the other end face of the end cap in the form of plate-like components and spaced apart from each other, with the cold end facing the end cap. The end face of the end cap absorbs the heat conducted from the metal heating cylinder through the end cap. The nested cylinder is made of a metal thermally conductive material and is thermally connected to the hot end of the cooling plate. The volume and thermal conductivity of the metal thermally conductive nested cylinder are used to conduct and diffuse the waste heat of the hot end of the cooling plate along the axial and radial directions, thereby reducing the interference of the heat generated by the hot end of the cooling plate on the metal heating cylinder. While not occupying the radial space of the outer circumference of the nested cylinder, the metal thermally conductive nested cylinder can also provide radial support and axial guidance for the inner wall of the temperature control shaft.

[0018] The second objective of this application is to provide a pump temperature control system for bladder irrigation and hot perfusion.

[0019] The technical solution is as follows: A pumping temperature control system for bladder irrigation and hyperthermic instillation, comprising a temperature control component, and further comprising: A trolley unit, with the chassis positioned above the trolley unit; The liquid inlet unit is located on one side of the trolley unit. The liquid inlet unit includes a liquid inlet consumable pipeline. One end of the liquid inlet consumable pipeline is wound around and passes through the limiting groove and is connected to the three-lumen catheter. The liquid discharge unit is located on the other side of the trolley unit. The liquid discharge unit includes a liquid discharge consumable pipeline, which is connected to the three-lumen catheter to extract waste fluid from the bladder.

[0020] By adopting the above scheme, one end of the inlet consumable tubing is wound and connected to the three-lumen catheter after passing through the limiting groove. The irrigation fluid is heated in the limiting groove area by the temperature control component through conduction on the outer wall of the tubing. The outlet unit is connected to the three-lumen catheter through an independent outlet consumable tubing to extract waste fluid from the bladder. This makes the inlet and outlet paths independent, allowing the device to adjust the inlet and outlet flow rates separately, thereby achieving independent control of the bladder filling volume and pressure. At the same time, the system can switch between bladder irrigation mode and hot irrigation mode by adjusting the temperature of the temperature control component and the pumping parameters of the inlet and outlet units.

[0021] In one embodiment of this application, the liquid inlet unit includes: A liquid inlet suspension unit, comprising a suspension rod and a first gravimeter, wherein the suspension rod is mounted vertically on the chassis and the first gravimeter is mounted on the suspension rod; A liquid inlet bag is suspended on the first gravimeter, and the outlet of the liquid inlet bag is connected to one end of the liquid inlet consumable pipeline. An inlet pump is provided, and the other end of the inlet consumable pipeline is connected to the three-lumen catheter via the inlet pump. An inlet sensing unit is provided on the inlet consumable pipeline to measure the temperature, pressure and flow rate at the other end of the inlet consumable pipeline.

[0022] By adopting the above scheme, one end of the infusion consumable pipeline is connected to the outlet of the infusion bag, and the other end is heated through the limiting groove and then connected to the three-lumen catheter through the infusion pump. The infusion pump is located downstream of the heating section and close to the three-lumen catheter. After the heated irrigation fluid flows out from the limiting groove, it is pumped to the three-lumen catheter by the infusion pump. This shortens the length of the pipeline before the heated irrigation fluid reaches the human body, thereby reducing the heat loss in this section of the pipeline and helping to improve the accuracy of temperature control. Furthermore, the infusion sensing unit is used to measure the temperature, pressure, and flow rate at the other end of the infusion consumable tubing. Its acquisition point is located at the end of the infusion consumable tubing near the three-lumen catheter, so that the feedback data of temperature, pressure, and flow rate can more accurately reflect the actual state of the infusion fluid before it enters the human body.

[0023] In one embodiment of this application, the liquid dispensing unit includes: The fluid dispensing pump has one end connected to the three-lumen urinary catheter and the other end connected to a waste bag via the fluid dispensing pump. The fluid dispensing consumables line is equipped with a fluid dispensing sensor unit for measuring the temperature, pressure and flow rate at one end of the fluid dispensing consumables line. The liquid discharge suspension unit includes a second gravity meter, and the waste liquid bag is suspended on the second gravity meter.

[0024] By adopting the above scheme, one end of the outflow consumable tubing is connected to a three-lumen catheter to receive waste fluid discharged from the bladder, and the other end is pumped into a waste fluid bag by an outflow pump. The outflow sensing unit is used to measure the temperature, pressure and flow rate at one end of the outflow consumable tubing. Its sampling point is located at the end of the outflow consumable tubing near the three-lumen catheter, so that the temperature, pressure and flow rate data on the outflow side can reflect the proximal state of the waste fluid after leaving the bladder. At the same time, the waste fluid bag is suspended on a second gravity meter, which detects the weight change of the waste fluid bag in real time to calculate the cumulative outflow volume. This cumulative outflow volume is cross-checked with the cumulative inflow volume data calculated by the first gravity meter on the inflow side, so that the system can perform precise real-time control based on the weighing measurement of the gravity meter.

[0025] In one embodiment of this application, a roller assembly is provided at the bottom of the trolley unit, a cavity is provided inside the trolley unit, and a control unit is provided in the cavity for integrating the temperature, pressure and flow data of the liquid inlet consumable pipeline and the liquid outlet consumable pipeline, and adjusting the liquid inlet pump, the liquid outlet pump and the temperature control component in real time.

[0026] By adopting the above scheme, the control unit is placed in the cavity inside the trolley unit. It integrates the temperature, pressure, and flow data collected from the inlet and outlet consumable pipelines to coordinate the adjustment of the inlet pump, outlet pump, and temperature control component. When the temperature deviates from the target value, the control unit adjusts the heating power of the temperature control component or starts cooling to control the temperature. When the pressure exceeds the preset range, the control unit adjusts the speed of the inlet or outlet pump to change the inflow or outflow rate of the fluid in the bladder. When the difference between the inlet and outlet fluid volume exceeds the preset threshold, the control unit outputs a warning signal and adjusts the pump speed accordingly. The coordinated adjustment of the four parameters—temperature, pressure, flow rate, and inlet / outlet fluid volume—forms a multi-parameter closed-loop control loop, so that when any parameter changes, the other parameters can be adjusted accordingly. Compared with the independent single-loop control of each parameter, it can maintain the overall treatment state within a safe window under the condition of mutual coupling changes of parameters.

[0027] In summary, this application includes at least one of the following beneficial technical effects: By setting the thin-film heating layer on the surface of the temperature-controlled shaft head, the heat source is directly adjacent to the outer wall contact area of ​​the winding pipeline in the limiting groove, shortening the heat transfer path, and improving the heating response speed by utilizing the low thermal inertia of the thin-film heating layer itself; in addition, by cooperatingly setting the cooling component in the annular temperature control gap between the drive shaft of the telescopic drive component and the temperature-controlled shaft head, the residual heat accumulated in the temperature-controlled shaft head is actively absorbed when heating stops or the temperature is too high, suppressing the temperature lag overshoot caused by thermal inertia, so that the temperature-controlled shaft head can achieve rapid temperature rise and fall switching and precise temperature maintenance within the temperature windows required by the two treatment modes of bladder irrigation and hyperthermic perfusion. At the same time, the cooling component also forms radial support for the inner wall of the temperature-controlled shaft head while providing the cooling function, integrating the temperature control function and the structural support function into the same component, reducing the radial wobble that may occur when the temperature-controlled shaft head is extended.

[0028] When the temperature control shaft head extends out of the chassis via the telescopic drive, the threaded limiting groove on the outside of the metal heating cylinder is exposed to the outside of the chassis. This, together with the clamping ears on both sides of the end cap and the limiting groove on the chassis, provides positioning and end clamping for the winding path of the disposable consumable tubing, ensuring that the number of winding turns, tubing position, and heating contact length remain consistent each time the tubing is loaded. When the temperature control shaft head retracts, the side wall of the end cap and the columnar channel form a sealing fit to reduce the intrusion of foreign objects. Simultaneously, the metal heating cylinder retracts into the chassis and establishes a heat conduction path with the cooling fins on the nested cylinder to achieve active cooling. This ensures that the injection fluid always flows within the disposable consumable tubing in the limiting groove area, without direct contact with the surface of the temperature control shaft head, reducing the risk of drug residue and cross-contamination.

[0029] By setting up inlet and outlet pumps, and enabling independent flow rate control for the fluid flowing into and out of the bladder, the filling volume and pressure of the bladder can be independently adjusted. A first and second gravity meter monitors the weight of the inlet and outlet bags, respectively, and cross-validates the cumulative inlet and outlet volumes, providing two independent data sources for monitoring fluid balance. Inlet and outlet sensing units collect temperature, pressure, and flow rate data at their respective ends near the three-lumen catheter. The control unit integrates this multi-channel data and performs coordinated adjustments to the inlet, outlet, and temperature control components, forming a multi-parameter closed-loop control circuit involving temperature, pressure, flow rate, and inlet / outlet volumes. This ensures that changes in any parameter allow for corresponding adjustments to other parameters, maintaining the overall treatment state within a safe range even under conditions of coupled parameter changes. Furthermore, the bladder irrigation mode and hyperthermic perfusion mode can be switched by adjusting the temperature control and pumping parameters. Attached Figure Description

[0030] Figure 1This is a perspective view of a temperature control assembly for bladder irrigation and hyperthermic perfusion provided in the first embodiment of this application; Figure 2 This is an exploded view of a temperature control assembly for bladder irrigation and hyperthermic perfusion provided in the first embodiment of this application; Figure 3 This is a cross-sectional view of a temperature control assembly for bladder irrigation and hyperthermic perfusion provided in the first embodiment of this application; Figure 4 This is a perspective view of a temperature control rod assembly for bladder irrigation and hot perfusion provided in the first embodiment of this application; Figure 5 This is a cross-sectional view of the temperature control shaft and the cooling component of a temperature control assembly for bladder irrigation and hot perfusion provided in the first embodiment of this application; Figure 6 This is a perspective view of a temperature control and cooling assembly for bladder irrigation and hot perfusion provided in the first embodiment of this application; Figure 7 This is a cross-sectional view of the temperature control shaft and the cooling component of a temperature control assembly for bladder irrigation and hot perfusion provided in the second embodiment of this application; Figure 8 This is a perspective view of a temperature control and cooling assembly for bladder irrigation and hot perfusion provided in the second embodiment of this application; Figure 9 This is a perspective view of a pumping temperature control system for bladder irrigation and hot perfusion provided in the first embodiment of this application; Figure 10 This is a control flow diagram of a pump temperature control system for bladder irrigation and hot perfusion provided in the first embodiment of this application.

[0031] Explanation of reference numerals in the attached drawings: 1. Chassis; 11. Columnar channel; 12. Limiting groove; 2. Temperature control rod assembly; 21. Telescopic drive component; 22. Temperature control shaft head; 221. Limiting groove; 222. Thin film heating layer; 223. End cap; 2231. Clamping ear; 224. Metal heating cylinder; 23. Temperature control gap; 24. Cooling assembly; 241. Nested cylinder; 242. Cooling element; 243. Fixing ring; 244. Liquid cooling head; 3. Trolley unit; 31. Roller assembly; 4. Liquid inlet unit; 41. Liquid inlet consumable pipeline; 42. Liquid inlet suspension unit; 421. Suspension rod; 422. First gravity meter; 43. Liquid inlet bag; 44. Liquid inlet pump; 5. Liquid outlet unit; 51. Liquid outlet consumable pipeline; 52. Liquid outlet pump; 53. Waste liquid bag; 54. Liquid outlet suspension unit; 541. Second gravity meter. Detailed Implementation

[0032] The following is in conjunction with the appendix Figures 1-10This application provides a more detailed description of a temperature control component and pump temperature control system for bladder irrigation and hot perfusion.

[0033] The temperature control assembly for bladder irrigation and hot perfusion provided in this application embodiment includes: a housing 1 and a temperature control rod assembly 2. Example 1

[0034] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 The chassis 1 has a columnar channel 11 on one side, and the temperature control rod assembly 2 is set in the columnar channel 11. The temperature control rod assembly 2 includes a telescopic drive 21 and a temperature control shaft head 22. The outer surface of the temperature control shaft head 22 is provided with a threaded limiting groove 221 and a thin film heating layer 222. The temperature control shaft head 22 is hollow inside. The drive shaft of the telescopic drive 21 extends into the interior of the temperature control shaft head 22 and is connected and fixed to the inner wall of one end of the temperature control shaft head 22. An annular temperature control gap 23 is formed between the drive shaft of the telescopic drive 21 and the temperature control shaft head 22. A cooling component 24 for absorbing heat from the temperature control shaft head 22 is provided in the temperature control gap 23.

[0035] In this embodiment, the telescopic drive component 21 is an electric telescopic rod with a telescopic stroke of 5cm to 15cm and a telescopic time controlled between 1s and 5s.

[0036] The metal heating cylinder 224 can be made of aluminum alloy. The limiting groove 221 is distributed in a threaded shape along the outer surface of the temperature control shaft head 22, with 4 to 5 turns of thread. The total heating length after the consumable pipeline is wound is 1m to 1.2m.

[0037] The groove width of the limiting groove 221 is slightly smaller than the maximum diameter inside the groove. The cross-sectional diameter of the limiting groove 221 is closely matched with the outer diameter of the consumable pipeline, so that the pipeline is not easy to fall out after being inserted, and the tight fit between the outer wall of the pipeline and the groove surface can be guaranteed to improve the heat transfer efficiency.

[0038] The consumable tubing uses the smooth cylindrical straight section of medical silicone tubing or medical PVC tubing for winding. This structure enables the temperature control component to have a retractable tubing winding assembly function and bidirectional active temperature control capability.

[0039] Please see Figure 2 The chassis 1 has limiting grooves 12 for placing consumable pipelines on both sides of the columnar channel 11. One end of the limiting groove 12 is connected to the columnar channel 11, and the other end extends horizontally along the radial direction of the columnar channel 11.

[0040] In this embodiment, the limiting groove 12 is provided on the wall surface of the chassis 1 on both sides of the columnar channel 11, with one groove on each side. The cross-sectional shape of the limiting groove 12 is an arc-shaped groove or a U-shaped groove that is adapted to the outer diameter of the consumable pipeline.

[0041] Please see Figure 4 The temperature control shaft head 22 includes an end cap 223 and a metal heating cylinder 224. The end cap 223 has clamping ears 2231 on both sides of the end facing the outside of the chassis 1. The side wall shape of the end cap 223 matches the columnar channel 11. The drive shaft of the telescopic drive member 21 is coaxially connected and fixed to the end cap 223 to drive the temperature control shaft head 22 to extend or retract into the columnar channel 11. The metal heating cylinder 224 is disposed at one end of the end cap 223 and extends horizontally into the inside of the chassis 1. The limiting groove 221 is disposed outside the metal heating cylinder 224 and extends along the length direction of the metal heating cylinder 224. The thin film heating layer 222 is disposed outside the metal heating cylinder 224.

[0042] In this embodiment, the end cap 223 is made of high-temperature resistant material, and the clamping ear 2231 is a guide buckle structure used to fix and guide the consumable pipeline.

[0043] The metal heating cylinder 224 extends horizontally from the end cap 223 into the housing 1. The metal heating cylinder 224 is made of aluminum alloy cylindrical shaft. The thin film heating layer 222 is attached to the outside of the metal heating cylinder 224 and covers the distribution area of ​​the limiting groove 221.

[0044] Under actual test conditions, when the target temperature of the temperature sensor at the end of the catheter is set to 37.5℃, the time from starting heating to reaching the preset temperature is less than 20 seconds, so that the temperature control shaft head 22 has the functions of winding positioning, rapid heating conduction and telescopic sealing.

[0045] It should be noted that in this embodiment, the thin film heating layer 222 is attached to the flange surface between the limiting grooves 221 on the outer surface of the metal heating cylinder 224. The heat generated by the thin film heating layer 222 is conducted radially through the wall of the metal heating cylinder 224 to the bottom wall of the limiting groove 221, and then conducted to the filling liquid in the pipeline through the contact between the bottom wall and the outer wall of the pipeline.

[0046] Please continue reading. Figure 5 The refrigeration assembly 24 includes a nested cylinder 241 and a fixing ring 243. The length of the nested cylinder 241 is greater than the length of the temperature control gap 23. Multiple cooling chips 242 are provided on the upper surface of the nested cylinder 241 to cooperate with the thin film heating layer 222 to control the temperature of the metal heating cylinder 224. The fixing ring 243 is coaxially sleeved on the outside of the end of the nested cylinder 241 away from the end cap 223. The fixing ring 243 is connected and fixed to the inside of the chassis 1.

[0047] In this embodiment, the nesting cylinder 241 is a cylindrical component with its outer diameter fitting with the inner diameter of the metal heating cylinder 224. The length of the nesting cylinder 241 is greater than the length of the temperature control gap 23. When the temperature control shaft head 22 retracts, the nesting cylinder 241 extends axially into the inner cavity of the metal heating cylinder 224 to cover the main heated area. When the temperature control shaft head 22 extends, the front end of the nesting cylinder 241 remains in the annular temperature control gap 23 to provide radial support.

[0048] The nested cylinder 241 has multiple cooling plates 242 arranged circumferentially on its upper surface. The number of cooling plates 242 is determined according to the inner diameter of the metal heating cylinder 224 and the cooling power requirement, for example, 3, 5 or 8 plates are provided.

[0049] The fixing ring 243 is coaxially sleeved on the outside of the end of the nested cylinder 241 away from the end cover 223, and is connected and fixed to the metal bracket inside the chassis 1.

[0050] Please continue reading. Figure 5 and Figure 6 The nested cylinder 241 is a heat-insulating material component, and the cooling chip 242 is an arc-shaped component adapted to the inner wall shape of the metal heating cylinder 224. Multiple mutually spaced arc-shaped grooves are opened on the outer circumference of the nested cylinder 241, and the cooling chips 242 are correspondingly arranged inside the arc-shaped grooves. The cold end of the cooling chip 242 faces the metal heating cylinder 224. The cooling assembly 24 also includes a liquid cooling head 244, which is embedded inside the nested cylinder 241 and located on the lower surface of the hot end of the cooling chip 242.

[0051] In this embodiment, the nested cylinder 241 is made of a heat-insulating material with a thermal conductivity of less than 1 W / (m·K) to form a thermal barrier between the cold end and the hot end of the cooling chip 242.

[0052] Among them, the cooling chip 242 is a semiconductor thermoelectric cooling chip, which is an arc-shaped component adapted to the curvature of the inner wall surface of the metal heating cylinder 224. It is embedded in the arc-shaped groove opened in the outer circumference of the nesting cylinder 241, and the cold end face faces the inner wall surface of the metal heating cylinder 224 to conduct contact heat transfer by arc surface contact.

[0053] The liquid cooling head 244 is embedded inside the nested cylinder 241 and located below the hot end of the cooling chip 242. The coolant inlet and outlet are connected to the external liquid cooling circulation device through pipelines to continuously remove the waste heat accumulated at the hot end of the cooling chip 242. Example 2

[0054] Example 2 has a structure that is basically the same as that of Example 1, except that: Please see Figure 7 and Figure 8The nested cylinder 241 is a metal heat-conducting component, and the cooling chip 242 is a sheet-like component. The cooling chips 242 are arranged circumferentially on the other end face of the end cover portion 223 and are spaced apart from each other. The cold end of the cooling chip 242 faces the end cover portion 223.

[0055] In this embodiment, the nested cylinder 241 is made of a metal thermally conductive material, and the cooling chip 242 is a planar sheet-shaped semiconductor thermoelectric cooling chip 242, which is arranged in a circumferential manner on the end face of the end cover 223 facing the inside of the chassis 1 and spaced apart from each other. The cold end face is attached to the end face of the end cover 223 to absorb the heat conducted from the metal heating cylinder 224 through the end cover 223.

[0056] The second objective of this application is to provide a pump temperature control system for bladder irrigation and hot perfusion.

[0057] Please see Figure 9 and Figure 10 The technical solution is as follows: a pumping temperature control system for bladder irrigation and hot perfusion, including a temperature control component, and further including: a trolley unit 3, a liquid inlet unit 4 and a liquid outlet unit 5.

[0058] The chassis 1 is located above the trolley unit 3. The liquid inlet unit 4 is located on one side of the trolley unit 3. The liquid inlet unit 4 includes a liquid inlet consumable tube 41. One end of the liquid inlet consumable tube 41 is wound around and passes through the limiting groove 221 and is connected to the three-lumen catheter. The liquid outlet unit 5 is located on the other side of the trolley unit 3. The liquid outlet unit 5 includes a liquid outlet consumable tube 51. The liquid outlet consumable tube 51 is connected to the three-lumen catheter to extract waste fluid from the bladder.

[0059] In this embodiment, cable clamps are provided on the left and right sides of the outer shell of the chassis 1 to organize and fix the inlet consumable pipe 41, the outlet consumable pipe 51, and the sensor signal lines along the outer wall of the chassis 1, so as to prevent the pipes and lines from falling apart and affecting operation.

[0060] The trolley unit 3 serves as the system's carrying platform, and the chassis 1 can be mounted on top of the trolley unit 3 via a fixed base.

[0061] The inlet consumable tubing 41 and the outlet consumable tubing 51 both use disposable consumables such as medical silicone tubing or medical PVC tubing. The smooth cylindrical straight tube part of the inlet consumable tubing 41 is wound around the limiting groove 221 4 to 5 times and then connected to the inlet chamber of the three-lumen catheter via the inlet pump 44. One end of the outlet consumable tubing 51 is connected to the outlet chamber of the three-lumen catheter. The irrigation fluid always flows in the disposable tubing in the heating section and does not come into direct contact with the surface of the temperature control component.

[0062] The system can switch between bladder irrigation mode and hot perfusion mode by adjusting the temperature of the temperature control component and the pumping parameters of the inlet pump 44 and the outlet pump 52.

[0063] The inlet unit 4 includes an inlet suspension unit 42, an inlet bag 43, and an inlet pump 44. The inlet suspension unit 42 includes a suspension rod 421 and a first gravity meter 422. The suspension rod 421 is mounted vertically on the housing 1. The first gravity meter 422 is mounted on the suspension rod 421. The inlet bag 43 is suspended on the first gravity meter 422. The outlet of the inlet bag 43 is connected to one end of the inlet consumable tubing 41. The other end of the inlet consumable tubing 41 is connected to a three-lumen catheter via the inlet pump 44. An inlet sensing unit is provided on the inlet consumable tubing 41 to measure the temperature, pressure, and flow rate at the other end of the inlet consumable tubing 41.

[0064] In this embodiment, the suspension rod 421 is mounted vertically on the fixed base at the top of the chassis 1, and the first gravity meter 422 adopts a high-precision mass sensor with a weighing error of no more than ±5 ml of the corresponding liquid mass.

[0065] Among them, the inlet pump 44 adopts a high-precision stepper motor pump body, which is driven by a stepper motor pump body controller and supports a flow rate adjustment range from 0.0053ml / min to 2000ml / min, with the flow rate error controlled within ±5%.

[0066] The flow rate control uses PWM to drive the stepper motor, with the duty cycle adjustable in ten to twenty levels, ranging from a minimum of 0% to 5% to a maximum of 90%.

[0067] The infusion pump 44 is located downstream of the heating section and close to the three-lumen catheter, which shortens the tubing length before the heated irrigation fluid reaches the human body to reduce heat loss.

[0068] The inlet sensing unit is located at one end of the inlet consumable line 41 near the three-lumen catheter. It includes a temperature sensor, a pressure sensor, and a flow sensor, enabling precise flow rate control and end-point status monitoring of the inlet path.

[0069] The pump head of the inlet pump 44 is provided with a pump inlet and a pump outlet. The inlet consumable pipeline 41 is connected to the pump inlet after being wound around the heating section of the limiting groove 221. The pump outlet is connected to the inlet chamber of the three-lumen catheter via a pipeline.

[0070] The dispensing unit 5 includes a dispensing pump 52 and a dispensing suspension unit 54. One end of the dispensing consumable tubing 51 is connected to a three-lumen catheter, and the other end is connected to a waste bag 53 via the dispensing pump 52. The dispensing consumable tubing 51 is equipped with a dispensing sensing unit for measuring the temperature, pressure and flow rate at one end of the dispensing consumable tubing 51. The dispensing suspension unit 54 includes a second gravity meter 541, and the waste bag 53 is suspended on the second gravity meter 541.

[0071] In this embodiment, the discharge pump 52 also adopts a high-precision stepper motor pump body, which is driven by a stepper motor pump body controller. Its flow rate adjustment range is 0.0053ml / min to 2000ml / min, and the flow rate error is controlled within ±5%.

[0072] The pump head of the discharge pump 52 is also equipped with a pump inlet and a pump outlet. The discharge consumable pipeline 51 is connected from the discharge chamber of the three-lumen catheter to the pump inlet of the discharge pump 52, and the pump outlet is connected to the waste bag 53 via a pipeline.

[0073] In this embodiment, a three-way connector, a filter, and a one-way valve are sequentially arranged on the inlet consumable pipeline 41 along the flow direction of the infusion fluid. The three-way connector is used to connect the infusion fluid or other liquids when needed. The filter is used to filter out particulate impurities that may exist in the infusion fluid. The one-way valve is used to prevent the infusion fluid from flowing back. A filter and a one-way valve are also arranged at the corresponding positions on the outlet consumable pipeline 51. The three-way connector, filter, and one-way valve are all disposable consumables and are used together with the inlet consumable pipeline 41 and the outlet consumable pipeline 51 as a consumable pipeline system unit and are replaced after use.

[0074] The fluid dispensing sensing unit is located at one end of the fluid dispensing consumable tubing 51 near the three-lumen catheter. It includes a temperature sensor, a pressure sensor, and a flow sensor. The pressure sensor indirectly reflects the pressure inside the bladder by measuring the tubing pressure. Accurate measurement requires algorithm calibration. The specific algorithm is known to those skilled in the art and will not be elaborated here.

[0075] The second gravimeter 541 also uses a high-precision mass sensor, with a weighing error of no more than ±5 ml of the corresponding liquid mass. The cumulative liquid output of the second gravimeter 541 is cross-compared with the cumulative liquid inflow data of the first gravimeter 422, so that the liquid output path has independent flow rate control, near-end status monitoring and weighing verification capabilities.

[0076] The bottom of the trolley unit 3 is provided with a roller assembly 31. The trolley unit 3 has a cavity inside, and a control unit is provided in the cavity. It is used to integrate the temperature, pressure and flow data of the liquid inlet consumable pipeline 41 and the liquid outlet consumable pipeline 51, and to adjust the liquid inlet pump 44, the liquid outlet pump 52 and the temperature control component in real time.

[0077] In this embodiment, the roller assembly 31 includes two omnidirectional wheels and two directional wheels. The omnidirectional wheels are located at the front end of the trolley unit 3, and the directional wheels are located at the rear end of the trolley unit 3.

[0078] The trolley unit 3 has symmetrical storage box units on both sides below it, one on each side. The storage box units are used to store the waste liquid bag 53. When not in use, the waste liquid bag 53 and its connecting pipes are neatly stored in the storage box below the trolley unit 3, reducing the risk of pipes scattering and tripping. The storage box units also provide temporary storage space for the waste liquid bag 53 after the liquid discharge suspension unit 54 is released.

[0079] Among them, the upper front end of the trolley unit 3 is equipped with a trolley push and pull handle, which is used by the operator to push and pull to move the entire system platform. The trolley unit 3 is equipped with an isolation transformer. The mains power is input through the filter switch socket and then converted by the isolation transformer to supply power.

[0080] The control unit includes a lower-level main control board, which is connected to the upper-level unit via a data cable. The upper-level unit is fixed on the bracket unit and equipped with a touch screen interface. An emergency stop button is provided on the upper surface of the chassis 1. Pressing the button will immediately stop the equipment from running.

[0081] The host computer unit is connected to the lower computer main control board via a USB data cable. The USB data cable passes through the inlet port on the top cover of the chassis 1 and enters the chassis 1 to connect with the lower computer main control board. The power cable of the host computer unit also passes through the inlet port and enters the chassis 1 before being led down to the power supply inside the trolley unit 3.

[0082] The back panel of the chassis 1 is equipped with a cooling fan and an exhaust mesh aligned with the cooling fan, as well as cable routing ports distributed at the top and bottom. The cooling fan is used to exhaust the heat generated by the electronic components such as the control unit, the stepper motor pump body controller of the inlet pump 44, and the stepper motor pump body controller of the outlet pump 52 inside the chassis 1 to the outside of the chassis 1.

[0083] The control unit integrates the temperature, pressure, and flow data from the inlet and outlet liquid sensing units, as well as the weight data from the first gravity meter 422 and the second gravity meter 541. It then uses a PID closed-loop control algorithm to coordinate and regulate the inlet pump 44, outlet pump 52, and temperature control components. The specific control logic is as follows: In terms of temperature control, the temperature of the temperature control component can be precisely adjusted between 35℃ and 45℃. In the hot water injection mode, the temperature is precisely controlled at 44.5℃±0.3℃, with temperature fluctuation not exceeding ±0.5℃ and the maximum temperature limit not exceeding 50℃. When the temperature exceeds 45℃, the equipment immediately triggers an over-temperature alarm and automatically stops heating.

[0084] Regarding pressure control, the pressure inside the bladder should be maintained between 10 mmHg and 40 mmHg. When the pressure exceeds 40 mmHg or falls below 10 mmHg, the device will immediately trigger an alarm and automatically adjust the flow rate to a safe value or suspend flushing and irrigation.

[0085] Regarding the balance of inlet and outlet fluids, the equipment records the inlet and outlet flow rates in real time. When the difference between inlet and outlet flow rates exceeds a specified amount, the equipment immediately triggers an alarm and prompts a check of pipeline patency. If the outlet flow rate is significantly lower than the inlet flow rate, the equipment indicates that there may be a blockage.

[0086] When the system starts up, it completes an initial self-test within 2 seconds. The self-test items include the communication status between the upper and lower computers, the working status of the temperature sensor, pressure sensor, mass sensor, heater, and stepper motor. If any item is abnormal, the corresponding fault prompt will be displayed. The system is equipped with a multi-level alarm mechanism: when a high-priority alarm (such as excessive pressure or temperature) is triggered, flushing, filling, and heating will be automatically suspended; when a medium-priority alarm (such as flow rate fluctuation) is triggered, a reminder will be given and an inspection will be suggested; when a low-priority alarm is triggered, close observation will be required. When an alarm occurs, the equipment will issue both audible and visual prompts. The system will automatically record the time, cause, and response measures for each alarm.

[0087] The chassis 1 is symmetrically supported by multiple metal brackets inside. All the load on the top of the chassis 1 is borne by the metal brackets. The plastic shell outside the chassis 1 only serves as an appearance protection and does not bear the structural load.

[0088] The pump head of the inlet pump 44 can be located on the outer surface of the side of the housing 1, and the stepper motor pump body of the inlet pump 44 is located on the inner surface of the side of the housing 1. The pump head and the stepper motor pump body are clamped and mounted on the metal brackets on the corresponding sides. The outlet pump 52 is clamped and mounted on the metal bracket on the other side in the same manner. The stepper motor pump body controller is mounted on the metal brackets on the corresponding sides.

[0089] In summary, the specific workflow of this device is as follows: The operator connects the mains power to the filter switch socket on the back of the trolley unit 3 via the power cord. After turning on the power, the control unit completes the initialization self-test within 2 seconds. After the self-test passes, the host computer enters the standby interface. The operator issues an extension command through the upper computer touch screen, and the electric telescopic rod drives the temperature control shaft head 22 to extend from the middle of the chassis 1. The smooth cylindrical straight tube part (medical silicone tube or medical PVC tube) of the disposable consumable tube is wound around the threaded limiting groove 221 4 to 5 times. The two ends of the tube pass through the limiting grooves 12 on both sides of the chassis 1 horizontally, and the end of the tube is fixed and guided by the guide buckles on both sides of the end cap 223. After the piping is assembled, the operator issues a retraction command, the temperature control shaft head 22 retracts into the housing 1, and the end cover 223 seals the opening of the columnar channel 11. The operator sets the treatment mode (bladder irrigation mode or hot irrigation mode), target temperature, flow rate level and treatment duration on the host computer interface, suspends the inlet bag 43 on the first gravity meter 422 and the waste bag 53 on the second gravity meter 541, and completes the connection between the inlet consumable tubing 41 and the outlet consumable tubing 51 and the three-lumen catheter. After pressing the start button, the timer starts working, the film heating layer 222 of the temperature control component starts heating, the control unit adjusts the heating power through the PID algorithm, and when the temperature reaches the preset value, the system automatically enters the heat preservation mode, and the inlet pump 44 and outlet pump 52 start pumping. The infusion fluid flows out from the inlet bag 43, is heated by the heating section, and is pumped into the three-lumen catheter into the bladder by the inlet pump 44. The waste fluid in the bladder is drawn out to the waste bag 53 through the three-lumen catheter and outlet pump 52. During treatment, sensor data such as pressure, temperature, flow rate, operating status of inlet pump 44, operating status of outlet pump 52, real-time data of inlet bag 43, and real-time data of waste bag 53 are displayed on the host computer interface. The control unit continuously performs multi-parameter closed-loop adjustment. Before the running time is up, the loop algorithm maintains the status. When the running time is up, the treatment ends and returns to the standby interface.

[0090] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A temperature control assembly for bladder irrigation and hyperthermic perfusion, characterized in that, include: A chassis (1) has a columnar channel (11) on one side inside the chassis (1); A temperature control rod assembly (2) is disposed in the columnar channel (11). The temperature control rod assembly (2) includes a telescopic drive member (21) and a temperature control shaft head (22). The outer surface of the temperature control shaft head (22) is provided with a threaded limiting groove (221). The outer surface of the temperature control shaft head (22) is provided with a thin film heating layer (222). The temperature control shaft head (22) is hollow inside. The drive shaft of the telescopic drive member (21) extends into the interior of the temperature control shaft head (22) and is connected and fixed to one end of the inner wall of the temperature control shaft head (22). An annular temperature control gap (23) is formed between the drive shaft of the telescopic drive member (21) and the temperature control shaft head (22). A cooling component (24) for absorbing heat from the temperature control shaft head (22) is provided in the temperature control gap (23).

2. A temperature control assembly for bladder irrigation and hyperthermic perfusion according to claim 1, characterized in that: The chassis (1) has limiting grooves (12) for placing consumable pipelines on both sides of the columnar channel (11). One end of the limiting groove (12) is connected to the columnar channel (11), and the other end extends horizontally along the radial direction of the columnar channel (11).

3. A temperature control assembly for bladder irrigation and hyperthermic perfusion according to claim 1, characterized in that, The temperature control shaft head (22) includes: The end cap (223) has clamping ears (2231) on both sides of one end facing the outside of the chassis (1). The side wall shape of the end cap (223) matches the columnar channel (11). The drive shaft of the telescopic drive (21) is coaxially connected and fixed to the end cap (223) to drive the temperature control shaft head (22) to extend or retract into the columnar channel (11). A metal heating cylinder (224) is disposed at one end of the end cap (223) and extends horizontally into the interior of the housing (1). A limiting groove (221) is disposed outside the metal heating cylinder (224) and extends along the length of the metal heating cylinder (224). A thin film heating layer (222) is disposed outside the metal heating cylinder (224).

4. A temperature control assembly for bladder irrigation and hyperthermic perfusion according to claim 3, characterized in that, The cooling component (24) includes: Nested cylinder (241), the length of which is greater than the length of the temperature control gap (23), and a plurality of cooling chips (242) are provided on the upper surface of the nested cylinder (241) to cooperate with the thin film heating layer (222) to control the temperature of the metal heating cylinder (224); A fixing ring (243) is coaxially sleeved on the outside of the end of the nested cylinder (241) away from the end cap (223), and the fixing ring (243) is connected and fixed to the inside of the chassis (1).

5. A temperature control assembly for bladder irrigation and hyperthermic perfusion according to claim 4, characterized in that: The nested cylinder (241) is a heat-insulating material component, and the cooling chip (242) is an arc-shaped component adapted to the inner wall shape of the metal heating cylinder (224). The nested cylinder (241) has multiple mutually spaced arc-shaped grooves on its outer circumference. The cooling chips (242) are correspondingly arranged inside the arc-shaped grooves. The cold end of the cooling chip (242) faces the metal heating cylinder (224). The cooling assembly (24) also includes a liquid cooling head (244), which is embedded inside the nested cylinder (241) and located on the lower surface of the hot end of the cooling chip (242).

6. A temperature control assembly for bladder irrigation and hyperthermic perfusion according to claim 4, characterized in that: The nested cylinder (241) is a metal heat-conducting component, and the cooling chip (242) is a sheet-like component. The cooling chips (242) are arranged circumferentially on the other end face of the end cap (223) and spaced apart from each other. The cold end of the cooling chip (242) faces the end cap (223).

7. A pumping temperature control system for bladder irrigation and hyperthermic instillation, comprising a temperature control component as described in any one of claims 1-6, characterized in that, Also includes: The trolley unit (3) is located above the chassis (1); Liquid inlet unit (4), the liquid inlet unit (4) is disposed on one side of the trolley unit (3), the liquid inlet unit (4) includes a liquid inlet consumable pipeline (41), one end of the liquid inlet consumable pipeline (41) is wound around and passes through the limiting groove (221), and is connected to the three-lumen catheter. The liquid discharge unit (5) is located on the other side of the trolley unit (3). The liquid discharge unit (5) includes a liquid discharge consumable pipeline (51), which is connected to the three-lumen catheter to extract waste liquid from the bladder.

8. A pumping temperature control system for bladder irrigation and hyperthermic perfusion according to claim 7, characterized in that, The liquid inlet unit (4) includes: Liquid inlet suspension unit (42), the liquid inlet suspension unit (42) includes a suspension rod (421) and a first gravimeter (422), the suspension rod (421) is mounted on the chassis (1) in the vertical direction, and the first gravimeter (422) is disposed on the suspension rod (421); A liquid inlet bag (43) is suspended on the first gravimeter (422), and the outlet of the liquid inlet bag (43) is connected to one end of the liquid inlet consumable pipeline (41). The other end of the inlet consumable pipeline (41) is connected to the three-lumen catheter via the inlet pump (44). The inlet consumable pipeline (41) is equipped with an inlet sensing unit for measuring the temperature, pressure and flow rate at the other end of the inlet consumable pipeline (41).

9. A pumping temperature control system for bladder irrigation and hyperthermic perfusion according to claim 7, characterized in that, The liquid outlet unit (5) includes: The liquid discharge pump (52) is connected to the three-lumen catheter at one end and the waste liquid bag (53) at the other end through the liquid discharge pump (52). The liquid discharge consumable pipeline (51) is equipped with a liquid discharge sensing unit for measuring the temperature, pressure and flow rate at one end of the liquid discharge consumable pipeline (51). The liquid discharge suspension unit (54) includes a second gravity meter (541), and the waste liquid bag (53) is suspended on the second gravity meter (541).

10. A pumping temperature control system for bladder irrigation and hyperthermic perfusion according to claim 7, characterized in that: The bottom of the trolley unit (3) is provided with a roller assembly (31). The trolley unit (3) has a cavity inside and a control unit is provided in the cavity. The control unit is used to integrate the temperature, pressure and flow data of the liquid inlet consumable pipeline (41) and the liquid outlet consumable pipeline (51) and adjust the liquid inlet pump (44), the liquid outlet pump (52) and the temperature control assembly in real time.

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