A plasma heating device for blood purification

Abstract

The present invention discloses a plasma heating device for blood purification, comprising a mobile frame, a control box being arranged on the mobile frame, the mobile frame comprising a cross base, pulleys being arranged at the bottom of the four corners of the cross base, a support rod being fixedly connected to the center position of the top of the cross base, the control box being fixedly mounted on the support rod, a fixing mechanism being arranged on the support rod, and a heating mechanism being arranged at the top of the support rod. The plasma heating device for blood purification of the present invention can control the temperature of a heating block as the patient's blood pressure changes by arranging a processor, thereby changing the temperature of a dialysate passing through the heating block, thereby reducing the probability of adverse reactions occurring in the patient, enhancing the patient's comfort level, and eliminating the need for long-term care by medical staff.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, in particular to a plasma heating device for blood purification. Background Art

[0002] Blood purification is also called dialysis in daily life. It means: taking the patient's blood out of the body and passing it through a purification device to remove certain pathogenic substances, purify the blood, and achieve the purpose of treating the disease. Blood purification should include: hemodialysis, hemofiltration, hemoperfusion, plasma exchange, immunoadsorption, etc. Although peritoneal dialysis does not take the blood out of the body, its principles are the same. Hemodialysis is just one of the methods for treating chronic renal failure.

[0003] Hemodialysis (HD), hemoperfusion (HP), plasma exchange, etc., while continuous blood purification (CBP), blood lipid purification, artificial liver support system (ALSS) are the combined application of the above technologies. Although peritoneal dialysis does not have extracorporeal circulation and only uses ascites exchange to purify the blood, it should also be included in blood purification therapy in a broad sense.

[0004] Hemodialysis: It uses the principle of semipermeable membrane to remove various harmful and redundant metabolic wastes and excess electrolytes in the fluid out of the body through diffusion, so as to purify the blood and correct the water, electrolyte and acid-base balance.

[0005] Hemoperfusion: The principle of hemoperfusion is to draw the patient's blood out of the body, bring it into contact with a solid adsorbent (such as the resin in the HA resin hemoperfusion device), remove certain metabolites and exogenous drugs or poisons in the body by adsorption, and then return the purified blood to the patient, thereby achieving the purpose of treating the disease.

[0006] In the existing hemodialysis process, the setting of the dialysate temperature will have a direct impact on the patient's body temperature, blood pressure and comfort. Dialysate that is lower than the patient's actual measured body temperature will cause adverse reactions in the patient, seriously affecting the patient's dialysis treatment effect and experience. In addition, setting a fixed constant temperature will also cause adverse reactions due to individual differences in patients. The ventilation process takes a long time, and doctors cannot pay attention to patients all the time. Therefore, there is an urgent need for a dialysate heating device that can automatically adjust to an appropriate temperature. Summary of the invention

[0007] In order to solve the deficiencies mentioned in the above-mentioned background technology, the purpose of the present invention is to provide a plasma heating device for blood purification. By setting a processor, the temperature of the heating block can be controlled as the patient's blood pressure changes, thereby changing the temperature of the dialysate passing through the heating block, thereby reducing the probability of adverse reactions in the patient, enhancing the patient's comfort level, and eliminating the need for long-term care by medical staff.

[0008] The purpose of the present invention can be achieved through the following technical solutions:

[0009] A plasma heating device for blood purification comprises a mobile frame, a control box is arranged on the mobile frame, the mobile frame comprises a cross base, pulleys are arranged at the bottom of the four corners of the cross base, a support rod is fixedly connected to the center position of the top of the cross base, the control box is fixedly installed on the support rod, a fixing mechanism is arranged on the support rod, and a heating mechanism is arranged at the top of the support rod;

[0010] The control box includes a control panel and a processor. The processor is electrically connected to an external power supply. The control panel is electrically connected to the processor. The processor is electrically connected to two temperature sensors. One temperature sensor is arranged on the blood transfusion tube of the dialysis machine, and the other temperature sensor is arranged on the patient's body surface. The processor is electrically connected to a blood pressure monitor. The processor is used to control the heating temperature of the heating mechanism.

[0011] It should be noted that the experimental data in the article "The Impact of Dialysate Temperature on the Comfort of Hemodialysis Patients" in the existing Chinese Nursing Magazine, Volume 47, Issue 12, December 2012, proves that the patient's blood pressure during dialysis is affected by the dialysate temperature, and using a dialysis temperature consistent with the actual measured body temperature is the best option because patients are most comfortable at this temperature.

[0012] As a preferred embodiment of the present invention, the heating mechanism includes a first clamping block and a second clamping block, a side of the first clamping block close to the second clamping block is fixedly connected to a rotating shaft, a side of the second clamping block close to the first clamping block is fixedly connected to a ring, the ring is sleeved on the rotating shaft, a threaded groove is provided on the outer surface of the rotating shaft, a slider is fixedly connected to the inner surface of the ring, the slider is located inside the threaded groove, a T-shaped clamping block is rotatably connected to the side of the second clamping block away from the ring, a clamping groove for limiting the displacement of the T-shaped clamping block is provided on the side of the first clamping block away from the rotating shaft, a heating block is embedded in the side of the first clamping block and the second clamping block close to each other, a transfer tube is clamped between the two heating blocks, the transfer tube is a hollow structure, and one end of the transfer tube is connected to the blood transfusion tube of the dialysis machine.

[0013] As a preferred solution of the present invention, the adapter tube includes a heating zone, which is diamond-shaped and located between two heating blocks. The distance between the upper and lower walls of the heating zone is 1.3-1.5 mm. The adapter tube is made of transparent high-temperature resistant material, and the heating blocks and the processor are electrically connected.

[0014] As a preferred solution of the present invention, the fixing mechanism includes a sliding sleeve and a fixed arm, the sliding sleeve is sleeved on the support column, the fixed arm is fixedly installed on the sliding sleeve, one end of the fixed arm away from the sliding sleeve is fixedly connected to the suspended wall, and two fixing frames are arranged on the suspended wall, one fixing frame is fixedly installed on the top of the suspended wall, and the other fixing frame is sleeved on the suspended wall.

[0015] As a preferred solution of the present invention, the bottom end of the suspended wall is fixedly connected to a base, one end of the base close to the fixed frame is fixedly connected to a lifting motor, the output end of the lifting motor is fixedly connected to another fixed frame, and the lifting motor is electrically connected to the processor.

[0016] As a preferred solution of the present invention, a foldable handle is provided on the support rod, and the foldable handle includes a through rod, a limiting plate and a spring. The through rod passes through the support rod, the limiting plate is fixedly installed on one end of the through rod, the spring is sleeved on the through rod, the spring is located between the limiting plate and the support rod, and the end of the through rod away from the limiting plate is fixedly connected with a first connecting rod, and contact blocks are symmetrically provided on a side of the first connecting rod close to the support rod, a connecting shaft is rotatably connected between the contact blocks, the connecting shaft passes through the through rod, and the contact block is in contact with the support rod.

[0017] As a preferred solution of the present invention, a reinforcement rod is fixedly connected to a side of the first connecting rod away from the support rod, an end of the reinforcement rod away from the first connecting rod is fixedly connected to the second connecting rod, the first connecting rod and the second connecting rod are parallel to each other, the reinforcement rod and the first connecting rod are perpendicular to each other, and the reinforcement rod and the second connecting rod are perpendicular to each other. The foldable handle also includes a U-shaped frame, the two ends of the U-shaped frame are respectively hinged to the first connecting rod and the second connecting rod, and the top of the U-shaped frame is fixedly connected to a magnetic attraction plate, which is used for the U-shaped frame to be adsorbed close to the first connecting rod and the second connecting rod.

[0018] As a preferred solution of the present invention, the support rod is a square prism, the contact block is a cuboid, and the first connecting rod and the second connecting rod are both made of iron material.

[0019] The beneficial effects of the present invention are:

[0020] 1. The present invention provides a movable frame and a foldable handle, so that the U-shaped frame can be held by hand, the movable frame can be pushed to the patient's bedside, and the fixed frame can be moved close to the bedside, which is convenient to use. The support rod is kept stationary, and the first connecting rod is pulled in a direction away from the support rod, and rotated around the connecting shaft, and then the two U-shaped frames are rotated so that the two U-shaped frames are adsorbed on the first connecting rod and the second connecting rod under the action of the magnetic suction plate, which can reduce the occupied space and leave more operating space for the doctor. The lifting motor is controlled to start and the two fixed frames are pushed close to each other until the two fixed frames clamp the bedside, so as to prevent the movable frame from being accidentally pushed and the connecting pipeline from being torn off;

[0021] 2. The present invention provides a replaceable transfer tube, which is convenient for medical staff to use, and the disposable transfer tube avoids the infection of blood-borne diseases. The heating area is set to increase the heating area of ​​the dialysate flowing inside the transfer tube, so that it can be heated faster and reduce the temperature difference between the heating block body and the dialysate passing through.

[0022] 3. The present invention can control the temperature of the heating block as the patient's blood pressure changes by setting a processor, thereby changing the temperature of the dialysate passing through the heating block, thereby reducing the probability of adverse reactions in patients, enhancing the patient's comfort level, and eliminating the need for long-term care by medical staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below in conjunction with the accompanying drawings.

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a structural schematic diagram of the mobile frame in the present invention;

[0026] Figure 3 It is a structural schematic diagram of the heating mechanism in the present invention;

[0027] Figure 4 It is a structural schematic diagram of the rotating shaft in the present invention;

[0028] Figure 5 is a cross-sectional view of the rotating shaft and the collar in the present invention;

[0029] Figure 6 It is a schematic diagram of the transfer pipe of the present invention;

[0030] Figure 7 is a schematic diagram of the fixing mechanism in the present invention;

[0031] Figure 8 is a schematic diagram of a foldable handle in the present invention;

[0032] Fig. 9 It is a principle block diagram of the present invention.

[0033] In the figure:

[0034] 1. Mobile frame; 2. Control box; 3. Cross base; 4. Pulley; 5. Support rod; 6. Fixing mechanism; 7. Heating mechanism; 8. Control panel; 9. Processor; 10. Temperature sensor; 11. Blood pressure monitor; 12. First clamping block; 13. Second clamping block; 14. Rotating shaft; 15. Ring; 16. Thread groove; 17. Sliding block; 18. T-type clamping block; 19. Slot; 20. Heating block; 21. Transfer tube; 22. Heating zone; 23. Sliding sleeve; 24. Fixed arm; 25. Suspended wall; 26. Fixed frame; 27. Machine base; 28. Lifting motor; 29. ​​Foldable handle; 30. Through rod; 31. Limiting piece; 32. Spring; 33. First connecting rod; 34. Contact block; 35. Connecting shaft; 36. Reinforcement rod; 37. Second connecting rod; 38. U-shaped frame; 39. Magnetic plate. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0037] like Figure 1-Figure 9 As shown, a plasma heating device for blood purification comprises a mobile frame 1, a control box 2 is arranged on the mobile frame 1, the mobile frame 1 comprises a cross base 3, pulleys 4 are arranged at the bottom of the four corners of the cross base 3, a support rod 5 is fixedly connected to the center position of the top of the cross base 3, the control box 2 is fixedly mounted on the support rod 5, a fixing mechanism 6 is arranged on the support rod 5, and a heating mechanism 7 is arranged at the top of the support rod 5;

[0038] The control box 2 includes a control panel 8 and a processor 9, the processor 9 is electrically connected to an external power supply, the control panel 8 is electrically connected to the processor 9, the processor 9 is electrically connected to two temperature sensors 10, one of the temperature sensors 10 is arranged on the blood transfusion tube of the dialysis machine, and the other temperature sensor 10 is arranged on the patient's body surface, the processor 9 is electrically connected to a blood pressure monitor 11, and the processor 9 is used to control the heating temperature of the heating mechanism 7.

[0039] It should be noted that the experimental data in the article "The Impact of Dialysate Temperature on the Comfort of Hemodialysis Patients" in the existing Chinese Nursing Magazine, Volume 47, Issue 12, December 2012, proves that the patient's blood pressure during dialysis is affected by the dialysate temperature, and using a dialysis temperature consistent with the actual measured body temperature is the best option because patients are most comfortable at this temperature.

[0040] As a preferred embodiment of the present invention, the heating mechanism 7 includes a first clamping block 12 and a second clamping block 13, the first clamping block 12 is fixedly connected to a rotating shaft 14 on one side close to the second clamping block 13, the second clamping block 13 is fixedly connected to a collar 15 on one side close to the first clamping block 12, the collar 15 is sleeved on the rotating shaft 14, a thread groove 16 is provided on the outer surface of the rotating shaft 14, a slider 17 is fixedly connected to the inner surface of the collar 15, the slider 17 is located inside the thread groove 16, a T-shaped block 18 is rotatably connected to the side of the second clamping block 13 away from the collar 15, a slot 19 for limiting the displacement of the T-shaped block 18 is provided on the side of the first clamping block 12 away from the rotating shaft 14, a heating block 20 is embedded on the side where the first clamping block 12 and the second clamping block 13 are close to each other, a transfer tube 21 is clamped between the two heating blocks 20, the transfer tube 21 is a hollow structure, and one end of the transfer tube 21 is connected to the blood transfusion tube of the dialysis machine.

[0041] As a preferred solution of the present invention, the transfer tube 21 includes a heating zone 22, which is rhombus-shaped. The heating zone 22 is located between two heating blocks 20. The distance between the upper and lower walls of the heating zone 22 is 1.3-1.5 mm. The transfer tube 21 is made of transparent high-temperature resistant material, and the heating block 20 is electrically connected to the processor 9.

[0042] As a preferred solution of the present invention, the fixing mechanism 6 includes a sliding sleeve 23 and a fixed arm 24, the sliding sleeve 23 is sleeved on the support column, the fixed arm 24 is fixedly installed on the sliding sleeve 23, and one end of the fixed arm 24 away from the sliding sleeve 23 is fixedly connected to a suspended wall 25, and two fixing frames 26 are arranged on the suspended wall 25, one of the fixing frames 26 is fixedly installed on the top of the suspended wall 25, and the other fixing frame 26 is sleeved on the suspended wall 25.

[0043] As a preferred solution of the present invention, the bottom end of the suspended wall 25 is fixedly connected to a base 27, and one end of the base 27 close to the fixed frame 26 is fixedly connected to a lifting motor 28, the output end of the lifting motor 28 is fixedly connected to another fixed frame 26, and the lifting motor 28 is electrically connected to the processor 9.

[0044] As a preferred solution of the present invention, a foldable handle 29 is provided on the support rod 5, and the foldable handle 29 includes a through rod 30, a limiting plate 31 and a spring 32. The through rod 30 passes through the support rod 5, and the limiting plate 31 is fixedly installed on one end of the through rod 30. The spring 32 is sleeved on the through rod 30, and the spring 32 is located between the limiting plate 31 and the support rod 5. The through rod 30 is fixedly connected with a first connecting rod 33 at one end away from the limiting plate 31, and contact blocks 34 are symmetrically provided on one side of the first connecting rod 33 close to the support rod 5. A connecting shaft 35 is rotatably connected between the contact blocks 34, and the connecting shaft 35 passes through the through rod 30, and the contact block 34 is in contact with the support rod 5.

[0045] As a preferred solution of the present invention, a reinforcement rod 36 is fixedly connected to a side of the first connecting rod 33 away from the support rod 5, and an end of the reinforcement rod 36 away from the first connecting rod 33 is fixedly connected to a second connecting rod 37, the first connecting rod 33 and the second connecting rod 37 are parallel to each other, the reinforcement rod 36 and the first connecting rod 33 are perpendicular to each other, and the reinforcement rod 36 and the second connecting rod 37 are perpendicular to each other, and the foldable handle 29 also includes a U-shaped frame 38, the two ends of the U-shaped frame 38 are respectively hinged to the first connecting rod 33 and the second connecting rod 37, and the top of the U-shaped frame 38 is fixedly connected to a magnetic attraction plate 39, and the magnetic attraction plate 39 is used for the U-shaped frame 38 to be adsorbed close to the first connecting rod 33 and the second connecting rod 37.

[0046] As a preferred solution of the present invention, the support rod 5 is a square prism, the contact block 34 is a cuboid, and the first connecting rod 33 and the second connecting rod 37 are both made of iron material.

[0047] Before use, hold the U-shaped frame 38 and push the mobile frame 1 to the head of the patient's bed, move the fixed frame 26 close to the bedside, and keep one fixed frame 26 above the bed and the other fixed frame 26 below the bed, then keep the support rod 5 stationary and pull the first connecting rod 33 in the direction away from the support rod 5, and rotate it around the connecting shaft 35, and then rotate the two U-shaped frames 38 so that the two U-shaped frames 38 are adsorbed on the first connecting rod 33 and the second connecting rod 37 under the action of the magnetic suction plate 39, which can reduce the occupied space and leave more operating space for the doctor, then operate the control panel 8 to control the lifting motor 28 to start, push the two fixed frames 26 closer to each other, until the two fixed frames 26 clamp the edge of the bed, to prevent the mobile frame 1 from being accidentally pushed and the connecting pipe from being torn off, and then connect Then, an unused adapter tube 21 is taken out, one end of the adapter tube 21 is connected to the blood transfusion tube of the dialysis machine, and the T-shaped block 18 is removed from the slot 19. Then, the second clamping block 13 is rotated, and at the same time, the slider 17 in the ring 15 slides in the threaded groove 16 to rotate and move the second clamping block 13 upward. Then, the adapter tube 21 is placed on the first clamping block 12, and the widest part of the heating zone 22 is kept directly above the first clamping block 12. Then, the second clamping block 13 is reset. After resetting, the T-shaped block 18 is rotated to enter the slot 19, and the first clamping block 12 and the second clamping block 13 are fixed. The two temperature sensors 10 are respectively fixed to the patient's body surface and the blood transfusion tube of the dialysis machine, and the armband of the blood pressure monitor 11 is tied to the patient's arm.

[0048] During operation, the temperature sensor 10 disposed on the patient's body surface measures the body temperature before hemodialysis and transmits it to the processor 9. The processor 9 collects the patient's blood pressure before hemodialysis in the blood pressure monitor 11. Then, the processor 9 controls the heating block 20 to the same temperature as the body temperature according to the data of the temperature sensor 10 disposed on the blood transfusion tube. When the patient's blood pressure is higher than 10% of the body-side blood pressure before dialysis, the processor 9 issues a command to increase the temperature to control the heating block 20 to increase the temperature. The temperature change range each time is 0.1-0.3°C, the interval between each command is 5-10min, and the cumulative increase in temperature does not exceed 0.6°C until the patient's blood pressure drops. When the patient's blood pressure is lower than 10% of the body-side blood pressure before dialysis, the processor 9 issues a command to reduce the temperature to control the heating block 20 to reduce the temperature. The temperature change range each time is 0.1-0.3°C, the interval between each command is 5-10min, and the cumulative decrease in temperature does not exceed 0.6°C. The processor 9 can control the heating block 20 as the patient's blood pressure changes, thereby changing the temperature of the dialysate, thereby reducing the probability of adverse reactions in the patient and enhancing the patient's comfort.

[0049] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0050] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

[0051] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0052] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and simple improvements made to the essential contents of the present invention should be included in the protection scope of the present invention.

Claims

1. A plasma heating device for blood purification, characterized in that: The invention comprises a mobile frame (1), a control box (2) is arranged on the mobile frame (1), the mobile frame (1) comprises a cross base (3), pulleys (4) are arranged at the bottom of the four corners of the cross base (3), a support rod (5) is fixedly connected to the center position of the top of the cross base (3), the control box (2) is fixedly mounted on the support rod (5), a fixing mechanism (6) is arranged on the support rod (5), and a heating mechanism (7) is arranged at the top of the support rod (5); The control box (2) comprises a control panel (8) and a processor (9), wherein the control panel (8) is electrically connected to the processor (9), and the processor (9) is electrically connected to two temperature sensors (10), one of the temperature sensors (10) being arranged on the blood transfusion tube of the dialysis machine, and the other of the temperature sensors (10) being arranged on the body surface of the patient, and the processor (9) being electrically connected to a blood pressure monitor (11), and the processor (9) being used to control the heating temperature of the heating mechanism (7); The heating mechanism (7) comprises a first clamping block (12) and a second clamping block (13); a rotating shaft (14) is fixedly connected to the first clamping block (12) on one side close to the second clamping block (13); a sleeve (15) is fixedly connected to the second clamping block (13) on one side close to the first clamping block (12); the sleeve (15) is sleeved on the rotating shaft (14); a thread groove (16) is formed on the outer surface of the rotating shaft (14); a sliding block (17) is fixedly connected to the inner surface of the sleeve (15); the sliding block (17) is located in the thread groove (16). The second clamping block (13) is rotatably connected to a T-shaped clamping block (18) on a side away from the collar (15); a clamping groove (19) for limiting the displacement of the T-shaped clamping block (18) is provided on a side away from the rotating shaft (14); a heating block (20) is embedded on a side where the first clamping block (12) and the second clamping block (13) are close to each other; a transfer tube (21) is clamped between the two heating blocks (20); the transfer tube (21) is a hollow structure, and one end of the transfer tube (21) is connected to the blood transfusion tube of the dialysis machine; The transfer tube (21) comprises a heating zone (22), the heating zone (22) is rhombus-shaped, the heating zone (22) is located between two heating blocks (20), the distance between the upper and lower walls of the heating zone (22) is 1.3-1.5 mm, the transfer tube (21) is made of transparent high-temperature resistant material, and the heating block (20) and the processor (9) are electrically connected.

2. The plasma heating device for blood purification according to claim 1, characterized in that: The fixing mechanism (6) comprises a sliding sleeve (23) and a fixing arm (24), wherein the sliding sleeve (23) is sleeved on the support column, and the fixing arm (24) is fixedly mounted on the sliding sleeve (23), and one end of the fixing arm (24) away from the sliding sleeve (23) is fixedly connected to a suspended wall (25), and two fixing frames (26) are arranged on the suspended wall (25), one of the fixing frames (26) is fixedly mounted on the top of the suspended wall (25), and the other of the fixing frames (26) is sleeved on the suspended wall (25).

3. The plasma heating device for blood purification according to claim 2, characterized in that: The bottom end of the suspended wall (25) is fixedly connected to a base (27), one end of the base (27) close to the fixed frame (26) is fixedly connected to a lifting motor (28), the output end of the lifting motor (28) is fixedly connected to another fixed frame (26), and the lifting motor (28) is electrically connected to the processor (9).

4. The plasma heating device for blood purification according to claim 1, characterized in that: The support rod (5) is provided with a foldable handle (29), and the foldable handle (29) comprises a through rod (30), a limiting plate (31) and a spring (32). The through rod (30) passes through the support rod (5), and the limiting plate (31) is fixedly mounted on one end of the through rod (30). The spring (32) is sleeved on the through rod (30), and the spring (32) is located between the limiting plate (31) and the support rod (5). The through rod (30) is fixedly connected with a first connecting rod (33) at one end away from the limiting plate (31), and a contact block (34) is symmetrically provided on one side of the first connecting rod (33) close to the support rod (5). A connecting shaft (35) is rotatably connected between the contact blocks (34), and the connecting shaft (35) passes through the through rod (30). The contact block (34) is in contact with the support rod (5).

5. The plasma heating device for blood purification according to claim 4, characterized in that: A reinforcing rod (36) is fixedly connected to one side of the first connecting rod (33) away from the supporting rod (5); an end of the reinforcing rod (36) away from the first connecting rod (33) is fixedly connected to the second connecting rod (37); the first connecting rod (33) and the second connecting rod (37) are parallel to each other; the reinforcing rod (36) and the first connecting rod (33) are perpendicular to each other; the reinforcing rod (36) and the second connecting rod (37) are perpendicular to each other; the foldable handle (29) further comprises a U-shaped frame (38); two ends of the U-shaped frame (38) are respectively hinged to the first connecting rod (33) and the second connecting rod (37); a magnetic attraction plate (39) is fixedly connected to the top of the U-shaped frame (38); the magnetic attraction plate (39) is used for the U-shaped frame (38) to be adsorbed close to the first connecting rod (33) and the second connecting rod (37).

6. The plasma heating device for blood purification according to claim 5, characterized in that: The support rod (5) is a square prism, the contact block (34) is a cuboid, and the first connecting rod (33) and the second connecting rod (37) are both made of iron material.

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