Warm keeping device special for hemodialysis filter

Abstract

The utility model discloses a warming device special for a hemodialysis filter, which can warm and warm the hemodialysis filter arranged on a dialysis machine body and comprises a heating component and a warming component which are both arranged on the dialysis machine body. The heating assembly generates heat and transmits the heat to the hemodialysis filter, and blood input into the hemodialysis filter is warmed, then subjected to heat preservation through the heat preservation assembly and output. According to the hemodialysis machine, the heating assembly and the heat preservation assembly are arranged on the hemodialysis machine body, so that the hemodialysis filter can be heated, when blood passes through the hemodialysis filter, the output blood is warmed and can be output at the temperature higher than the temperature when the blood is input, and the output blood passes through the heat preservation assembly and then is output and flows back into a patient; the heat preservation assembly can play a heat preservation role on the blood output from the hemodialysis filter, so that the output blood can flow back to a patient in a warm state, the temperature of the blood is prevented from being reduced, and the effect of transferring heat is facilitated.

Description

Technical Field

[0001] The utility model relates to the field of medical devices, in particular to a warming device for a special hemodialysis filter. Background Art

[0002] Hemodialysis, also known as blood dialysis, is one of the treatment methods for patients with kidney failure. Hemodialysis requires pumping the patient's blood out of the body, filtering it, and then returning the blood to the patient's body. Hemodialysis requires the use of a hemodialysis machine, which consists of a dialysis machine body and a hemodialysis filter. Multiple hollow fiber tubes are arranged inside the hemodialysis filter. The patient's blood flows through the inside of the hollow fiber tubes. The hemodialysis filter is also connected with a reverse osmosis water pipe and a wastewater pipe. Reverse osmosis water flows through the outside of the hollow fiber tubes. The flow direction of the reverse osmosis water is opposite to that of the blood. Harmful substances in the blood enter the reverse osmosis water through the small holes of the hollow fiber tubes and are finally discharged from the wastewater pipe together with the reverse osmosis water. However, the traditional hemodialysis filter does not have a warming device. When the blood passes through the hollow fiber tubes, heat exchange occurs with the reverse osmosis water, resulting in a decrease in the blood temperature. When the blood flows back into the patient's body, to a certain extent, it will make the patient feel uncomfortable. Even some patients will use diapers to keep the hemodialysis filter warm, but the local warming effect is not good, and the patient still feels uncomfortable after the blood flows back. To solve the deficiencies of the prior art, we propose a warming device specifically for hemodialysis filters. Summary of the Utility Model

[0003] The warming device for the special hemodialysis filter of the utility model can effectively solve the problem of the relatively low temperature of the blood during hemodialysis in the above-mentioned prior art.

[0004] According to one aspect of the utility model, there is provided a warming device for a special hemodialysis filter, which can warm the hemodialysis filter arranged on the dialysis machine body, including a heating component and a heat preservation component. Both the heating component and the heat preservation component are arranged on the dialysis machine body. The heating component generates heat and transfers it to the hemodialysis filter. The blood input into the hemodialysis filter is heated and then kept warm by the heat preservation component and output.

[0005] In some embodiments, the heating component includes a first heating unit and a bellows. The first heating unit is arranged inside the bellows. The bellows has a communicating air inlet and air outlet. The air outlet is arranged opposite to the hemodialysis filter. The heat generated by the first heating unit is output from the air outlet to the hemodialysis filter.

[0006] In some embodiments, the first heating unit includes a first heating element, a driving device, and a driving part. The driving part is drivingly connected to the driving device. The driving device drives the driving part to drive the heat generated by the first heating element to be output to the air outlet.

[0007] In some embodiments, the first heating element is disposed between the driving element and the air inlet, and the air flow of the air box enters from the air inlet and drives the heat generated by the first heating element to flow towards the air outlet.

[0008] In some embodiments, a temperature measuring tube is provided outside the air box. The temperature measuring tube is disposed opposite to the air outlet and close to the hemodialysis filter. The temperature measuring tube is used to measure the output temperature of the first heating unit and control the opening and closing states of the driving device and the first heating unit.

[0009] In some embodiments, a first temperature control switch is provided inside the temperature measuring tube, and the first temperature control switch is connected to the first heating unit and the driving device.

[0010] In some embodiments, reverse osmosis water is contained in the temperature measuring tube, and the heat output by the first heating unit is used to heat the reverse osmosis water. The first temperature control switch controls the opening and closing states of the first heating unit and the driving device by measuring the temperature of the reverse osmosis water.

[0011] In some embodiments, a blood outlet tube is connected to the output end of the hemodialysis filter. The heat preservation assembly includes:

[0012] A water bag, a part of the blood outlet tube is wrapped inside the water bag;

[0013] A water tank, a second heating element is provided inside the water tank, and a liquid communicating with the water bag is contained inside the water tank. The second heating element heats the liquid to heat the water bag, and the blood in the blood outlet tube is output after being heat-preserved by the water bag.

[0014] In some embodiments, a second temperature control switch is provided inside the water tank. The second temperature control switch is connected to the second heating element and controls the opening and closing state of the second heating element by measuring the temperature of the liquid.

[0015] In some embodiments, the heat preservation assembly further includes a semi-circular buckle and a locking member. The water bag is disposed inside the semi-circular buckle. The semi-circular buckle is provided with clamping plates, and the locking member is connected to the clamping plates. The clamping plates are locked by the locking member so that the semi-circular buckle presses the water bag tightly.

[0016] The heat preservation device for the special hemodialysis filter of the present utility model has the following beneficial effects compared with the prior art:

[0017] In this application, a heating component and a heat preservation component are provided on the dialysis machine body. The heating component can generate heat and output it to the hemodialysis filter, enabling the hemodialysis filter to be heated. When blood passes through the hemodialysis filter, the output blood is warmed and can be output at a temperature higher than the input temperature. Moreover, the output blood will also pass through the heat preservation component and then be output and returned to the patient. The heat preservation component can keep the blood output from the hemodialysis filter warm, enabling the output blood to flow back to the patient in a warm state, avoiding a decrease in the blood temperature. Additionally, the heating component and the heat preservation component do not directly contact the hemodialysis filter but transfer heat in a heat transfer manner, which is beneficial for achieving the effect of heat transfer. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 FIG. is a schematic structural diagram of the heat preservation device for the dedicated hemodialysis filter of the present utility model;

[0019] Figure 2 FIG. is a schematic structural diagram of the heating component in the present utility model;

[0020] Figure 3 FIG. is a schematic diagram of opening the bellows in the heating component of the present utility model;

[0021] Figure 4 FIG. is a schematic structural diagram of the heat preservation component in the present utility model;

[0022] Figure 5 FIG. is a schematic diagram of opening the water tank in the heat preservation component of the present utility model.

[0023] In the figure: 1 - dialysis machine body, 2 - hemodialysis filter, 3 - inlet blood vessel, 4 - outlet blood vessel, 5 - reverse osmosis water pipe, 6 - wastewater pipe, 7 - heating component, 71 - bellows, 72 - air inlet, 73 - first heating element, 74 - bracket, 75 - motor, 76 - fan, 77 - air outlet, 78 - temperature measuring pipe, 79 - first temperature control switch, 711 - controller, 8 - heat preservation component, 81 - water tank, 82 - semi-circular buckle, 83 - water bag, 84 - clamping plate, 85 - second heating element, 86 - second temperature control switch, 87 - hose, 88 - locking member, 89 - buckle. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the scope of protection of the present utility model.

[0025] It should be noted that the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0026] As Figure 1 shown, the present utility model relates to a warming device for a dedicated hemodialysis filter, which can be used in conjunction with a dialysis machine body 1. A hemodialysis filter 2 (blood purification filter) is provided on the dialysis machine body 1. The hemodialysis filter 2 is an important component of hemodialysis. Referring to the prior art, the end pointing in the direction of gravity is the lower side. Usually, an inlet blood vessel 3 for blood is connected to the upper side of the hemodialysis filter 2, and an outlet blood vessel 4 is connected to the lower side of the hemodialysis filter 2. The inlet blood vessel 3 and the outlet blood vessel 4 are connected through the hemodialysis filter. An anti-osmosis water pipe 5 and a waste water pipe 6 are also connected to the side of the hemodialysis filter. The anti-osmosis water pipe 5 is located below the waste water pipe 6. The blood flows along the direction of gravity, and the anti-osmosis water in the anti-osmosis water pipe 5 flows in the hemodialysis filter along the reverse direction of the gravity direction, opposite to the flow direction of the blood. The generated waste liquid is output from the waste water pipe 6, and the dialyzed blood is output from the outlet blood vessel 4. The hemodialysis filter 2 can be connected to the outer wall of the dialysis machine body 1 through a support frame structure.

[0027] The following further elaborates on the present utility model with reference to the accompanying drawings.

[0028] Figure 1 Schematically shows a warming device for a dedicated hemodialysis filter according to an embodiment of the present utility model. As Figure 1 shown, the warming device for the dedicated hemodialysis filter includes a heating component 7 and a heat preservation component 8.

[0029] As Figure 2 shown, the heating component 7 is used to generate heat and transfer it to the hemodialysis filter. The heating component 7 is fixedly arranged on the dialysis machine body 1. Optionally, the heating component 7 is detachably connected to the dialysis machine body 1 to facilitate adjusting the position of the heating component 7. The heating component 7 includes a first heating unit and a wind box 71. The inside of the wind box 71 is a hollow structure. The wind box 71 has an air inlet 72 and an air outlet 77 that communicate with the inside. The air inlet 72 and the air outlet 77 are connected and oppositely arranged. There are two air inlets 72. The air inlets 72 adopt a reticulated structure, which is farther from the hemodialysis filter than the air outlet 77. The air outlet 77 is oppositely arranged with the hemodialysis filter. The air outlet 77 adopts a rectangular opening structure to adapt to the cylindrical shape of the hemodialysis filter. The air flow in the wind box 71 can enter from the air inlet 72 and output from the air outlet 77.

[0030] As Figure 3As shown in the figure, the first heating unit is arranged inside the air box 71 and can generate heat and output it to the air outlet 77. The first heating unit includes a first heating element 73, a driving device, and a driving part. In addition, a controller 711 is provided outside the air box 71. Referring to the prior art, the first heating element 73 and the driving device are electrically connected to the controller 711. The controller 711 is generally used to start and control the first heating unit and the driving device. The first heating element 73 is specifically a heating resistor and can generate heat after being started. The driving device is a motor 75, and its output end is connected to the driving part. The driving part is specifically a fan 76 or other structures with fan blades. A bracket 74 is also provided inside the air box 71, and the motor 75 is arranged on the bracket 74, so that the first heating element 73 is arranged between the fan 76 and the air inlet 72, and the fan 76 is arranged opposite to the air outlet 77. When the motor 75 is started, it drives the fan 76 to rotate, so that the air flow can enter from the air inlet 72 and output the heat generated by the first heating element 73 through the air flow from the air outlet 77. The air flow with heat is transmitted to the hemodialysis filter to ensure that the hemodialysis filter is in a warm state.

[0031] Furthermore, a temperature measuring tube 78 is provided outside the air box 71. The temperature measuring tube 78 extends outside the air box 71 through a connecting rod structure. It is close to (adjacent to) the hemodialysis filter and is also arranged opposite to the air outlet 77. A first temperature control switch 79 is provided inside the temperature measuring tube 78. The inside of the temperature measuring tube 78 has a hollow structure. The first temperature control switch 79 is arranged inside the temperature measuring tube 78. The first temperature control switch 79 is preferably a waterproof temperature control switch. The first temperature control switch 79 is connected to the first heating unit and the motor 75 and is used to control the on-off state of the first heating unit and the motor 75. When the preset temperature is detected, the first heating unit and the motor 75 are disconnected. Among them, reverse osmosis water is contained in the temperature measuring tube 78. Since the hemodialysis filter injects reverse osmosis water through the reverse osmosis water pipe 5, the temperature measuring tube 78 simulates the temperature inside the hemodialysis filter through the above structure, and the preset temperature value can be appropriately adjusted. Moreover, the material used outside the temperature measuring tube 78 is the same as the material outside the hemodialysis filter. The temperatures of the temperature measuring tube 78 and the hemodialysis filter are both warmed by the hot air flow from the air outlet 77.

[0032] As Figure 4 As shown in the figure, the heat preservation component 8 is arranged on the dialysis machine body 1 below the heating component 7, so that the blood flowing through the hemodialysis filter can achieve the effect of being warmed first and then heat-preserved. The main function of the heat preservation component 8 is on the blood outlet pipe 4. The heat preservation component 8 includes a water bag 83, a water tank 81, a semi-circular buckle 82, and a locking part 88.

[0033] As Figure 5As shown, the water bag 83 adopts a semi-cylindrical structure and there are two of them. The interior of the water bag contains liquid, such as pure water or other aqueous solutions. The two water bags 83 are combined to form a cylindrical structure, and a part of the blood outlet tube 4 is clamped between the two water bags 83. The water tank 81 can be fixedly or detachably connected to the dialysis machine body 1. The interior of the water tank 81 has a hollow structure and contains the same liquid as the water bag 83. The water tank 81 and the water bag 83 are interconnected through a hose 87. A second heating element 85 and a second temperature control switch 86 are provided in the water tank 81. The second heating element 85 is specifically a heating resistor and is electrically connected to the controller 711. The second heating element 85 is started by the controller 711 to heat the liquid in the water tank 81, so that the temperature of the water bag 83 is balanced with the temperature of the liquid in the water tank 81. The second temperature control switch 86 is preferably a waterproof temperature control switch. The second heating element 85 is connected to the second temperature control switch 86 to control the on-off state of the second heating element 85. When the preset temperature is detected, the second heating element 85 is disconnected. The semi-circular buckle 82 and the locking member 88 are mainly used to assist the water bag 83 in pressing the blood outlet tube 4. The semi-circular buckle 82 adopts a hollow cylindrical structure and is adapted to the shape of the water bag 83. The semi-circular buckle 82 is rotatably arranged on the water tank 81. The semi-circular buckle 82 has an openable and closable structure and is provided with a hinge structure for opening and closing. At the opposite end of the hinge structure, there are clamping plates 84. The clamping plates 84 are closed to achieve the closed state of the semi-circular buckle 82. The clamping plates 84 are provided with threaded holes. The locking member 88 adopts a structure similar to a bolt, and its end is provided with a manually rotatable buckle 89. The locking member 88 can be threadedly engaged with the threaded holes of the clamping plates 84, so that the clamping plates 84 can be gradually approached and locked, and thus the semi-circular buckle 82 can clamp the water bag 83, and the water bag 83 can be in close contact with the blood outlet tube 4. Therefore, the warm water bag 83 can keep the blood outlet tube 4 warm.

[0034] Working principle: Before use, first operate the controller 711 to connect the first heating element 73 to power supply, which can heat the air in the bellows 71. Press the heat preservation component 8 against the blood outlet tube 4. Start the second heating element 85 to make the water tank 81 and the water bag 83 in a warm state. Start the motor 75 to make the warm air flow out from the air outlet 77 and be transmitted to the hemodialysis filter. When blood is input from the blood inlet tube 3, it is heated by the hemodialysis filter and then output to the blood outlet tube 4. When the blood passes through the blood outlet tube 4, it can be further heat-preserved by the heat preservation component 8 and then output to the patient. When the temperature of the temperature measuring tube 78 is too high (for example, exceeding 38 degrees Celsius), the first temperature control switch 79 detects the preset temperature value, indicating that the temperature of the hemodialysis filter is too high. The first temperature control switch 79 is triggered to disconnect the first heating element 73 and the motor 75 to make them in the off state, preventing overheating of the hemodialysis filter 2. Similarly, when the second temperature control switch 86 detects the preset temperature value, the second temperature control switch 86 disconnects the second heating element 85 to make it in the off state. Therefore, during the whole process, before the extracorporeal blood circulation flows back to the patient, the temperature of the blood can be prevented from decreasing, and it can flow back to the patient in a warm and heat-preserved state, which is beneficial to the transmission of the warm effect.

[0035] As described above, it is only a preferred embodiment of the present invention. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. It is not a restriction on the present invention in any form. Therefore, any modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A warming device for a dedicated hemodialysis filter, which can warm and keep warm the hemodialysis filter arranged on the dialysis machine body, is characterized in that, It includes a heating component and a heat preservation component. Both the heating component and the heat preservation component are arranged on the hemodialysis machine body. The heating component generates heat and transfers it to the hemodialysis filter. The blood input to the hemodialysis filter is warmed and then output after being heat-preserved by the heat preservation component.

2. The heat preservation device of the dedicated hemodialysis filter according to claim 1, characterized in that, The heating component includes a first heating unit and a bellows. The first heating unit is arranged inside the bellows. The bellows has a communicating air inlet and air outlet. The air outlet is arranged opposite to the hemodialysis filter. The heat generated by the first heating unit is output from the air outlet to the hemodialysis filter.

3. The warming device for the dedicated hemodialysis filter according to claim 2, characterized in that, The first heating unit includes a first heating element, a driving device and a driving member. The driving member is drivingly connected to the driving device. The driving device drives the driving member to drive the heat generated by the first heating element to be output to the air outlet.

4. The warming device for the dedicated hemodialysis filter according to claim 3, characterized in that, The first heating element is arranged between the driving member and the air inlet. The air flow of the bellows enters from the air inlet and drives the heat generated by the first heating element to flow towards the air outlet.

5. The warming device for the dedicated hemodialysis filter according to claim 3, characterized in that, A temperature measuring tube is arranged outside the bellows. The temperature measuring tube is arranged opposite to the air outlet and close to the hemodialysis filter. The temperature measuring tube is used to measure the output temperature of the first heating unit and control the opening and closing states of the driving device and the first heating unit.

6. The warming device for the dedicated hemodialysis filter according to claim 5, characterized in that, A first temperature control switch is arranged inside the temperature measuring tube, and the first temperature control switch is connected to the first heating unit and the driving device.

7. The warming device for the dedicated hemodialysis filter according to claim 6, characterized in that, Reverse osmosis water is accommodated inside the temperature measuring tube. The heat output by the first heating unit is used to heat the reverse osmosis water. The first temperature control switch controls the opening and closing states of the first heating unit and the driving device by measuring the temperature of the reverse osmosis water.

8. The warming device for the dedicated hemodialysis filter according to claim 1, wherein A blood outlet tube is connected to the output end of the hemodialysis filter. The heat preservation component includes: A water bag, and a part of the blood outlet tube is wrapped inside the water bag; A water tank, a second heating element is arranged inside the water tank, and a liquid communicating with the water bag is accommodated inside the water tank. The second heating element heats the liquid to heat the water bag. The blood in the blood outlet tube is output after being heat-preserved by the water bag.

9. The warming device for the dedicated hemodialysis filter according to claim 8, characterized in that, A second temperature control switch is arranged inside the water tank. The second temperature control switch is connected to the second heating element and controls the opening and closing state of the second heating element by measuring the temperature of the liquid.

10. The warming device for the dedicated hemodialysis filter according to claim 8, characterized in that, The heat preservation component further includes a semi-circular buckle and a locking member. The water bag is arranged inside the semi-circular buckle. The semi-circular buckle is provided with clamping plates. The locking member is connected to the clamping plates. The clamping plates are locked by the locking member so that the semi-circular buckle presses the water bag tightly.

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