Heating device and blood purification equipment

Abstract

The utility model belongs to the technical field of medical instruments, and discloses a heating device and blood purification equipment. The heating device comprises a heating bag, a heat conduction block, a pressure monitoring assembly and a temperature monitoring assembly. A mounting cavity is formed in the heat conduction block, the heating bag can be attached to the inner wall of the mounting cavity in an expansion state, and the heat conduction block is used for heating liquid in the heating bag; the working end of the pressure monitoring assembly extends into the mounting cavity, and the pressure monitoring assembly can touch the outer surface of the heating bag to monitor the internal pressure of the heating bag; the temperature monitoring assembly is arranged on the heat conduction block and used for monitoring the temperature of the heat conduction block. According to the blood purification device, the state of the blood purification pipeline can be monitored, the use safety of the blood purification device is improved, and treatment accidents caused by faults are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a heating device and a blood purification device. Background Art

[0002] Blood purification therapy is to draw the patient's blood out of the body, and expel various harmful substances and excess metabolic waste in the blood, so as to achieve the purpose of purifying the blood and treating diseases. Among them, blood purification equipment is an important medical device used to treat a variety of diseases. It is based on the principle of blood purification therapy, draws the patient's blood out of the body, and removes the pathogenic substances in it through a specific purification device by diffusion, convection and adsorption, thereby purifying the blood and achieving the purpose of treating diseases.

[0003] Since the blood purification pipeline is outside, and during the treatment process, the blood will indirectly contact liquids such as dialysate; or due to treatment modes and individual differences, it is often necessary to deliver replenishing fluids such as plasma or blood to the patient's body. The replenishing fluid is collected with the blood through the pipeline and finally returned to the patient's body. After passing through the blood purification pipeline, the blood will lower its temperature due to heat exchange. If the blood is transported back to the patient's body when the temperature is too low, it will cause discomfort to the patient, and in severe cases, it will endanger the safety of the patient's blood purification treatment. Therefore, in blood purification treatment, the dialysate or replenishing fluid or both need to be heated to the target value to prevent the blood from being too cold when it is returned to the patient's body after passing through the blood purification pipeline.

[0004] The heating device or heating module in the existing blood purification equipment has insufficient safety due to the lack of monitoring of the pipeline status, which easily affects the therapeutic effect of blood purification treatment. Utility Model Content

[0005] The purpose of the utility model is to provide a heating device and a blood purification device, which can monitor the state of the blood purification pipeline, improve the safety of the blood purification equipment, and avoid treatment accidents caused by faults.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] A heating device, comprising:

[0008] Heating capsule;

[0009] A heat-conducting block, wherein a mounting cavity is provided in the heat-conducting block, wherein the heating capsule can fit against the inner wall of the mounting cavity in an expanded state, and the heat-conducting block is used to heat the liquid inside the heating capsule;

[0010] a pressure monitoring assembly, wherein a working end of the pressure monitoring assembly extends into the mounting cavity, and the pressure monitoring assembly can touch the outer surface of the heating capsule to monitor the internal pressure of the heating capsule;

[0011] A temperature monitoring component is disposed on the heat conducting block and is used to monitor the temperature of the heat conducting block.

[0012] As an optional solution of a heating device, the heating device further comprises:

[0013] A heating unit, wherein a plurality of the heating units are arranged inside the heat conducting block;

[0014] A temperature control switch is detachably connected to the heat conductive block. When the temperature of the heat conductive block exceeds a preset temperature, the temperature control switch can cut off the electrical connection between the heating unit and the main power supply and / or trigger an alarm.

[0015] As an optional solution of the heating device, the heat conducting block is provided with a first mounting hole, and the pressure monitoring assembly comprises:

[0016] A pressure sensor, disposed on the heat conducting block;

[0017] A detection column is passed through the first mounting hole, one end of the detection column is connected to the working end of the pressure sensor, and the other end extends out of the first mounting hole and can touch the outer surface of the heating capsule.

[0018] As an optional solution of the heating device, the heat conducting block is provided with a second mounting hole, and the temperature monitoring component comprises:

[0019] The temperature sensor is arranged in the second mounting hole.

[0020] As an optional solution of the heating device, the number of the temperature sensors is not less than two.

[0021] As an optional solution of the heating device, the installation cavity is a columnar groove structure that penetrates the heat conductive block, and an opening is provided on one side of the heat conductive block along the extension direction of the installation cavity, and the opening is connected to the installation cavity.

[0022] As an optional solution of a heating device, the heating device further comprises:

[0023] The shell has a heat-conducting block fixed on it, and a first accommodating cavity and a second accommodating cavity are provided on the shell. The first accommodating cavity and the second accommodating cavity are respectively located at two ends of the heat-conducting block and are both connected with the installation cavity. The first accommodating cavity and the second accommodating cavity are respectively used to accommodate part of the pipelines at two ends of the heating capsule.

[0024] As an optional solution of the heating device, the first mounting hole is arranged close to the bottom wall of the heating capsule.

[0025] As an optional solution of the heating device, the heating device further comprises a heat insulation plate, and the heat insulation plate is detachably connected to the outer wall of the heat conductive block.

[0026] A blood purification device comprises the heating device described in any of the above schemes.

[0027] Beneficial effects:

[0028] In the first aspect of the utility model, the pressure monitoring component is in direct contact with the heating capsule and monitors the pressure change of the heating capsule, so that the state of the heating capsule can be monitored at all times to avoid the risk of rupture due to excessive internal pressure of the heating capsule or to promptly remind medical staff to troubleshoot the installed device in a timely manner, thereby reducing the risk of failure and improving safety; the temperature monitoring component is used to monitor the temperature of the heat conductive block and the heating capsule, so as to prevent the heating capsule from running out of control due to overtemperature. Through the combined monitoring of the pressure monitoring component and the temperature monitoring component, this device effectively ensures the stability of the heating capsule and the pipeline state, improves the safety of the use of the blood purification equipment, and avoids treatment accidents caused by failures.

[0029] In the second aspect of the utility model, the blood purification equipment equipped with the heating device can further realize dynamic monitoring of the working process while performing basic blood heating operations, thereby improving the operating stability and safety of use of the blood purification equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a first cross-sectional schematic diagram of the heating device provided by an embodiment of the utility model;

[0031] Figure 2 It is an axonometric diagram of the heating device provided by an embodiment of the utility model from a first viewing angle;

[0032] Figure 3 is an axonometric diagram of the heating device provided by an embodiment of the utility model from a second viewing angle;

[0033] Figure 4 is a second cross-sectional schematic diagram of the heating device provided in an embodiment of the utility model;

[0034] Figure 5 is a third cross-sectional schematic diagram of the heating device provided in an embodiment of the utility model;

[0035] Figure 6 It is a fourth cross-sectional schematic diagram of a heating device for changing the specifications of a heating capsule provided in an embodiment of the utility model.

[0036] In the figure:

[0037] 1. Heating capsule;

[0038] 2. heat conducting block; 21. mounting cavity; 22. first mounting hole; 23. second mounting hole; 24. opening; 25. limiting plate;

[0039] 3. Pressure monitoring component; 31. Pressure sensor; 32. Detection column;

[0040] 4. Temperature monitoring component; 41. Temperature sensor;

[0041] 5. Heating unit;

[0042] 6. Temperature control switch;

[0043] 7. Shell; 71. First accommodating chamber; 72. Second accommodating chamber; 73. Strip groove;

[0044] 8. Heat insulation board. DETAILED DESCRIPTION

[0045] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0046] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0048] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0049] Please refer to the attached Figure 1 -Attached Figure 3 The first aspect of the present embodiment relates to a heating device, which includes a heating capsule 1, a heat-conducting block 2, a pressure monitoring component 3 and a temperature monitoring component 4. The heat-conducting block 2 is provided with a mounting cavity 21, and the heating capsule 1 can fit the inner wall of the mounting cavity 21 in an expanded state, and the heat-conducting block 2 is used to heat the liquid inside the heating capsule 1; the working end of the pressure monitoring component 3 extends into the mounting cavity 21, and the pressure monitoring component 3 can touch the outer surface of the heating capsule 1 to monitor the internal pressure of the heating capsule 1; the temperature monitoring component 4 is provided on the heat-conducting block 2, and is used to monitor the temperature of the heat-conducting block 2.

[0050] In this embodiment, the heating capsule 1 is made of a deformable material. Before the heating capsule 1 is filled with liquid, it can be squeezed into various irregular shapes to reduce the volume, so as to facilitate the placement of the heating capsule 1 into the installation cavity 21 of the heat conductive block 2. In addition, after the heating capsule 1 is filled with liquid, the internal pressure gradually increases, driving the heating capsule 1 to expand outward and expand its volume until its outer wall fits the inner wall of the installation cavity 21. The heating capsule 1 is usually made of colorless and transparent soft plastic. The interior of the heating capsule 1 can be used to temporarily store liquids such as dialysate or replenishment liquid. At the same time, both ends of the heating capsule 1 are connected to pipelines for the inflow and outflow of liquids such as dialysate or replenishment liquid.

[0051] When the heating bag 1 expands, the outer wall finally surrounds and fits tightly against the installation cavity 21 of the heat-conducting block 2 in the circumferential direction. The heat-conducting block 2 can be made of a metal material or a ceramic material with good thermal conductivity in whole or in part, or it can be made of a composite material of metal and ceramic. The heat can be continuously transferred to the heating bag 1 through the heat-conducting block 2, so that the dialysate or supply fluid and other liquids inside the heating bag 1 are continuously heated.

[0052] A pressure monitoring component 3 is also provided on the heat conductive block 2. The pressure monitoring component 3 penetrates the heat conductive block 2 and extends the working end into the installation cavity 21. The internal pressure of the heating capsule 1 is monitored by touching the outer surface of the heating capsule 1. The pressure change of the heating capsule 1 is monitored by the pressure monitoring component 3, so that the state of the heating capsule 1 can be monitored at all times. For example, during the continuous operation of the device, if the dialysate or replenishment fluid is continuously infused, the pressure in the heating capsule 1 continues to increase, and the heating capsule 1 may rupture due to the excessive internal pressure. The rupture of the heating capsule 1 will affect the treatment process and even cause danger to the patient, which must be completely avoided. In this embodiment, the internal pressure of the heating capsule 1 is monitored at any time by the pressure monitoring component 3. When the internal pressure of the heating capsule 1 is too large or abnormally increased, the abnormal pressure signal can be output, and the system can be readjusted to slow down the infusion speed or directly stop the infusion; on the other hand, if the medical staff operates improperly or an unexpected situation occurs in the middle of the process, causing the heating capsule 1 to rupture, the internal pressure of the heating capsule 1 will drop rapidly. When the above pressure feedback signal appears and is detected by the pressure monitoring component 3, the medical staff can be reminded in time to check whether the heating device has any working abnormalities or whether the pipeline connected to the heating capsule 1 is ruptured or leaking.

[0053] A temperature monitoring component 4 is also provided on the heat-conducting block 2. The temperature monitoring component 4 is arranged on the back of the heat-conducting block 2 to monitor the temperature of the heat-conducting block 2 to prevent the temperature of the liquid in the heating capsule 1 from getting out of control and affecting the treatment effect. In fact, the temperature of the liquid in the heating capsule 1 can be calibrated through experimental tests. Specifically, by measuring the temperature of the heat-conducting block 2 near the heating capsule 1 and combining the temperature comparison of the heat-conducting block 2 and the heating capsule 1, the temperature of the heating capsule 1 can be indirectly monitored. In the entire heating device, measuring the temperature of the heat-conducting block 2 is more convenient than measuring the temperature of the heating capsule 1. At the same time, the indirect detection result can also accurately reflect the temperature of the heating capsule 1. Therefore, it is more economical to directly measure the temperature of the heat-conducting block 2 and indirectly obtain the temperature of the heating capsule 1. In addition, the indirect measurement method can also prevent the liquid in the heating capsule 1 from contacting the outside world.

[0054] The pressure monitoring component 3 and the temperature monitoring component 4 used in this embodiment can perform real-time combined monitoring of the working status of the heating capsule 1, effectively ensuring the stability of the heating capsule 1 and the pipeline status, improving the safety of the use of the blood purification equipment, and avoiding treatment accidents caused by faults.

[0055] Please refer to the attached Figure 4 and attached Figure 5Optionally, the heating device further includes a heating unit 5 and a temperature control switch 6, wherein the plurality of heating units 5 are arranged inside the heat conductive block 2; the temperature control switch 6 is detachably connected to the heat conductive block 2, and when the temperature of the heat conductive block 2 exceeds a preset temperature, the temperature control switch 6 can cut off the electrical connection between the heating unit 5 and the main power supply and / or the temperature control switch 6 triggers an alarm.

[0056] In this embodiment, the heat-conducting block 2 is in the shape of a rectangular parallelepiped, and a plurality of column holes with circular cross-sections are provided inside the heat-conducting block 2. A heating unit 5 is inserted inside each column hole. The heating unit 5 is used to continuously heat the heat-conducting block 2. In this embodiment, a total of four column holes are provided on the heat-conducting block 2, and the four column holes are distributed on the periphery of the installation cavity 21. Correspondingly, the heating unit 5 heats the heat-conducting block 2 from four directions respectively so that the temperature rise rate of each part of the heat-conducting block 2 is basically consistent, ensuring that each part of the heating capsule 1 is heated evenly. In other embodiments, the number and power of the heating unit 5 can be selected in a targeted manner according to the overall power and heating temperature control requirements of the entire purification equipment. In addition, a limit plate 25 is also provided at the end of the heat-conducting block 2, and the limit plate 25 is covered at the end of the heating unit 5 so that the heating unit 5 is limited and fixed inside the column hole.

[0057] Furthermore, the temperature control switch 6 is screwed onto the heat conductive block 2, and the temperature control switch 6 is connected to the circuit between the heating unit 5 and the main power supply, and is used to control the current on and off of the heating unit 5. When the temperature of the heat conductive block 2 exceeds the preset temperature, the temperature monitoring component 4 can send an over-temperature signal to the control system. When the temperature monitoring component 4 detects that the temperature of the heat conductive block 2 rises abnormally, it can send an over-temperature signal to the control system, so that the control system directly triggers the temperature control switch 6 to disconnect the electrical connection, or the control system causes the over-temperature signal to trigger an alarm and prompts manual operation to disconnect the heating unit 5 from the main power supply, thereby improving the operational convenience of fault maintenance. Of course, the temperature control switch 6 can be in the form of a physical switch. If the temperature continues to rise and reaches the preset temperature of the temperature control switch 6, the temperature control switch 6 will automatically trip and disconnect the heating unit 5 from the main power supply, thereby improving the safety of the heating device.

[0058] Please continue to refer to the attached Figure 6 Optionally, the heat conductive block 2 is provided with a first mounting hole 22, and the pressure monitoring assembly 3 includes a pressure sensor 31 and a detection column 32. The pressure sensor 31 is provided on the heat conductive block 2, and the detection column 32 is passed through the first mounting hole 22, one end of the detection column 32 is connected to the working end of the pressure sensor 31, and the other end extends out of the first mounting hole 22 and can touch the outer surface of the heating capsule 1.

[0059] In this embodiment, the pressure sensor 31 is located on the back of the heat-conducting block 2. Adaptively, a first mounting hole 22 is provided on the back of the heat-conducting block 2. The detection column 32 is penetrated through the first mounting hole 22. The detection column 32 slightly protrudes from the side wall of the heat-conducting block 2. One end of the detection column 32 is connected to the working end of the pressure sensor 31, and the other end extends out of the first mounting hole 22 and can touch the outer surface of the heating capsule 1. After the heating capsule 1 is loaded into the installation cavity 21, the pump in the blood purification device is started, and the blood is input into the heating capsule 1 under the action of the pump. The heating capsule 1 is gradually deformed and expanded outwards under pressure, and finally fits with the outer wall of the installation cavity 21. In the process of the heating capsule 1 expanding outwards under pressure, the outer wall of the heating capsule 1 will hit the detection column 32 and squeeze the detection column 32 outward, so that the pressure sensor 31 obtains a force signal, and the force signal is converted into a detectable voltage signal change through the pressure sensor 31, and then converted into a pressure change after the liquid is input into the heating capsule 1 according to the experimental calibration.

[0060] Optionally, the first mounting hole 22 is arranged close to the bottom wall of the heating capsule 1 .

[0061] Please compare the attached Figure 1 and attached Figure 6 When the device is in use, heating capsules 1 of different specifications may be used depending on different usage conditions. For example, when the liquid flowing through the heating capsule 1 is blood rather than dialysate or replenishment fluid, a smaller heating capsule 1 will be used. Due to the different volumes of heating capsules 1 of different specifications, after the heating capsule 1 is loaded into the installation cavity 21, it is often placed at the bottom of the installation cavity 21, and as the volume continues to expand, the heating capsule 1 continues to occupy the upper space. Since the volumes of heating capsules 1 of different specifications after expansion are not the same, the heights relative to the installation cavity 21 are also different. This causes the small-sized heating capsule 1 to still be placed near the bottom of the installation cavity 21 after expansion. In order to ensure the applicability of the device to heating capsules 1 of various specifications, the pressure sensor 31 is arranged at a lower position on the back of the heat conductive block 2. It is arranged at a lower position, and pressure monitoring can be achieved in the early stage of the expansion of the heating capsule 1, thereby making the pressure monitoring range wider and the safety higher. Please continue to refer to the attached Figure 5 Optionally, a second mounting hole 23 is provided on the heat conducting block 2 , and the temperature monitoring component 4 includes a temperature sensor 41 , and the temperature sensor 41 is provided in the second mounting hole 23 .

[0062] In this embodiment, the second mounting hole 23 is a blind hole structure, and the temperature sensor 41 can directly collect the temperature of the heat-conducting block 2 and indirectly obtain the temperature of the heating capsule 1 according to the calibration result.

[0063] Further, the number of the temperature sensors 41 is not less than two.

[0064] In this embodiment, two second mounting holes 23 are provided at the lower back of the heat conductive block 2. Correspondingly, two temperature sensors 41 are placed in the two second mounting holes 23 respectively and work simultaneously. The purpose of providing two or more temperature sensors 41 is to improve the accuracy of temperature monitoring through multi-point sampling. In addition, it can also avoid the accident of over-temperature runaway caused by inaccurate measurement of the liquid temperature inside the heating bag 1 due to the failure of a single temperature sensor 41.

[0065] Please attach Figure 1 and attached Figure 6 In actual use, the volume specifications of the heating capsule 1 can be selected or even modified as needed, and the heating capsule 1 is usually concentrated in the lower part of the installation cavity 21 and extends upward. In order to maximize the adaptability of the heating device to heating capsules 1 of various length specifications, the temperature monitoring component 4 and the pressure monitoring component 3 are usually concentrated in the lower back of the heat conductive block 2.

[0066] Optionally, the installation cavity 21 is a cylindrical groove structure penetrating the heat conducting block 2 , and an opening 24 is provided on one side of the heat conducting block 2 along the extension direction of the installation cavity 21 , and the opening 24 is communicated with the installation cavity 21 .

[0067] The structure of the installation cavity 21 is a cylindrical groove with a circular cross-section. The heating capsule 1 is small in size when not filled with liquid and can be introduced into the installation cavity 21 through the top of the cylindrical groove. The opening 24 leads out the pipeline at one end of the heating capsule 1. Medical staff can drag the pipeline at this end along the opening 24 to place the heating capsule 1 at the bottom position of the heat-conducting block 2.

[0068] Please continue to refer to the attached Figure 1 Furthermore, the heating device also includes a shell 7, the heat-conducting block 2 is fixed on the shell 7, and a first accommodating cavity 71 and a second accommodating cavity 72 are provided on the shell 7. The first accommodating cavity 71 and the second accommodating cavity 72 are respectively located at the two ends of the heat-conducting block 2, and are both connected to the installation cavity 21. The first accommodating cavity 71 and the second accommodating cavity 72 are respectively used to accommodate part of the pipelines at the two ends of the heating capsule 1.

[0069] In this embodiment, the shell 7 is in a semi-enclosed state, and the heat-conducting block 2 can be connected to the back of the shell 7 by snapping or threading. The shell 7 extends upward from the two ends of the heat-conducting block 2 and forms a first accommodating cavity 71 and a second accommodating cavity 72 respectively. The first accommodating cavity 71 and the second accommodating cavity 72 are both connected to the installation cavity 21 and are respectively used to accommodate part of the pipelines at both ends of the heating capsule 1. The shell 7 has good thermal insulation to prevent the heat-conducting block 2 from dissipating heat outward from the shell 7. At the same time, the shell 7 can also partially isolate the heat-conducting block 2 to prevent people from accidentally touching and scalding, while improving the heating efficiency and reducing heat loss.

[0070] Furthermore, a strip groove 73 extending in the same direction as the opening 24 is provided at a portion of the housing 7 corresponding to the opening 24 .

[0071] The shell 7 covers the installation cavity 21 of the heat-conducting block 2, which can prevent the heat of the heating capsule 1 from being lost and improve the heat transfer efficiency. At the same time, a strip groove 73 is also provided on the shell 7 corresponding to the opening 24, so that the medical staff can drag the pipeline along the strip groove 73 and the inner wall of the opening 24 to place the heating capsule 1 at the bottom of the heat-conducting block 2.

[0072] Optionally, the heating device further comprises a heat insulating plate 8 , which is detachably connected to the outer wall of the heat conducting block 2 .

[0073] The heat insulation board 8 is screwed to the back of the heat conductive block 2, wherein the pressure sensor 31 of the pressure monitoring assembly 3 and the temperature control switch 6 can be fixed on the heat insulation board 8, and the detection column 32 and the temperature sensor 41 pass through the heat insulation board 8 to enter the heat conductive block 2. Other components, control circuit boards or wires can be arranged on the side of the heat insulation board 8 away from the heat conductive block 2. The heat insulation effect of the heat insulation board 8 can prevent the high temperature of the heat conductive block 2 from affecting other components, control circuit boards or wires, thereby improving the safety and compactness of the entire heating device.

[0074] The second aspect of this embodiment also relates to a blood purification device, which includes the above heating device.

[0075] The blood purification equipment equipped with the heating device can not only perform basic blood heating operations, but also further realize dynamic monitoring of the working process, thereby improving the operating stability and use safety of the blood purification equipment.

[0076] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A heating device, characterized in that: include: Heating capsule (1); A heat-conducting block (2), wherein a mounting cavity (21) is provided in the heat-conducting block (2), and the heating capsule (1) can fit the inner wall of the mounting cavity (21) in an expanded state, and the heat-conducting block (2) is used to heat the liquid inside the heating capsule (1); A pressure monitoring component (3), wherein a working end of the pressure monitoring component (3) extends into the installation cavity (21), and the pressure monitoring component (3) can touch the outer surface of the heating capsule (1) to monitor the internal pressure of the heating capsule (1); A temperature monitoring component (4), wherein the temperature monitoring component (4) is arranged on the heat conducting block (2) and is used to monitor the temperature of the heat conducting block (2).

2. The heating device according to claim 1, characterized in that The heating device also includes: A heating unit (5), wherein a plurality of the heating units (5) are arranged inside the heat conducting block (2); A temperature control switch (6), wherein the temperature control switch (6) is detachably connected to the heat conductive block (2); when the temperature of the heat conductive block (2) exceeds a preset temperature, the temperature control switch (6) can cut off the electrical connection between the heating unit (5) and the main power supply and / or the temperature control switch (6) triggers an alarm.

3. The heating device according to claim 1, characterized in that: The heat conducting block (2) is provided with a first mounting hole (22), and the pressure monitoring assembly (3) comprises: A pressure sensor (31) is arranged on the heat conducting block (2); A detection column (32) is inserted into the first mounting hole (22), one end of the detection column (32) is connected to the working end of the pressure sensor (31), and the other end extends out of the first mounting hole (22) and can touch the outer surface of the heating capsule (1).

4. The heating device according to claim 1, characterized in that The heat conducting block (2) is provided with a second mounting hole (23), and the temperature monitoring component (4) comprises: A temperature sensor (41) is disposed in the second mounting hole (23).

5. The heating device according to claim 4, characterized in that: The number of the temperature sensors (41) is not less than two.

6. The heating device according to claim 1, characterized in that: The installation cavity (21) is a columnar groove structure that penetrates the heat conducting block (2); one side of the heat conducting block (2) is provided with an opening (24) along the extension direction of the installation cavity (21); the opening (24) is in communication with the installation cavity (21).

7. The heating device according to claim 6, characterized in that The heating device also includes: A shell (7), the heat-conducting block (2) is fixed on the shell (7), and the shell (7) is provided with a first accommodating cavity (71) and a second accommodating cavity (72), the first accommodating cavity (71) and the second accommodating cavity (72) are respectively located at two ends of the heat-conducting block (2), and are both connected to the installation cavity (21), and the first accommodating cavity (71) and the second accommodating cavity (72) are respectively used to accommodate part of the pipelines at two ends of the heating capsule (1).

8. The heating device according to claim 3, characterized in that: The first mounting hole (22) is arranged close to the bottom wall of the heating capsule (1).

9. The heating device according to claim 1, characterized in that: The heating device further comprises a heat insulation plate (8), and the heat insulation plate (8) is detachably connected to the outer wall of the heat conducting block (2).

10. A blood purification device, characterized in that: The invention comprises a heating device as described in any one of claims 1 to 9.

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