CRRT filter heating device

Abstract

The utility model relates to a CRRT filter heating device which comprises a filter pipe, an inlet pipe, an outlet pipe, a dialysate outlet pipe and a dialysate inlet pipe, the inlet pipe is installed at the top end of the filter pipe, the outlet pipe is installed at the bottom end of the filter pipe, the dialysate outlet pipe is installed at the top of the side of the filter pipe, and the dialysate inlet pipe is installed at the bottom end of the filter pipe. And the dialysate inlet pipe is mounted at the bottom of the side of the filter pipe. The utility model relates to the technical field of CRRT filter assistance. The CRRT filter heating device can heat a conveying pipeline connected with the filter pipe, can adapt to conveying pipelines of various lengths, is convenient to install, can directly wrap the connected conveying pipeline, can further heat and heat blood in the conveying pipeline, and is convenient to use. The temperature lost in the blood flowing process during CRRT treatment is reduced, the blood conveyed into the body of a patient is heated, and the safety of CRRT treatment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of CRRT filter assistance, in particular to a CRRT filter heating device. Background Art

[0002] CRRT is continuous renal replacement therapy, a medical technology used to treat critical illnesses such as acute renal insufficiency and multiple organ dysfunction syndrome. The filter plays a vital role in CRRT. Its main function is to act as a filtering container after the blood is extracted from the patient's body. After the blood is filtered, it is re-injected into the patient's body to complete the treatment. The heat loss and large amount of fluid exchange in the extracorporeal circulation during CRRT treatment produce a cooling effect, which can cause the patient's body temperature to drop. Hypothermia can cause chills, reduce oxygen supply to body tissues, affect coagulation function, cause adverse effects on patients, and increase the difficulty of nursing. Therefore, it is necessary to heat the blood during blood filtration to ensure that the filtered blood entering the patient's body is at a normal temperature.

[0003] For example, a CRRT filter heating device with publication number CN209286297U includes a housing and a controller, wherein the two ends of the housing are provided with a liquid inlet and a liquid outlet, a heating pipe connecting the liquid inlet and the liquid outlet is provided inside the housing, an electric heating sheet is wrapped outside the heating pipe, and the controller is arranged outside the housing, and the electric heating sheet is electrically connected to the controller through a wire. This heating device can effectively solve the problem of the patient's body temperature dropping due to the continuous blood purification process, and is conducive to maintaining the patient's normal body temperature environment.

[0004] Although this application can heat the blood filtered in the filter, the blood transported out will flow into the blood transfusion pipe. Heat will still be lost during the blood transport process, which will cause the temperature of the blood injected into the patient's body to be lower than the patient's own temperature, which may easily affect the patient's own health status. Utility Model Content

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a CRRT filter heating device so as to solve the technical problems mentioned in the above background technology.

[0006] The above technical objectives of the utility model are achieved through the following technical solutions:

[0007] A CRRT filter heating device comprises a filter tube, an inlet tube, an outlet tube, a dialysate outlet tube and a dialysate inlet tube, wherein the inlet tube is installed at the top end of the filter tube, the outlet tube is installed at the bottom end of the filter tube, the dialysate outlet tube is installed at the top of the side of the filter tube, and the dialysate inlet tube is installed at the bottom of the side of the filter tube. Silicone cloth is sheathed on the outside of the inlet tube and the outlet tube, the top end of the silicone cloth located at the inlet tube is rolled up in a ring shape from top to bottom, and the top end of the silicone cloth located at the outlet tube is rolled up in a ring shape from bottom to top, a resistance wire is wound inside the silicone cloth, and the resistance wire is spirally arranged, and a tube body heating component is connected to one end of the silicone cloth close to the filter tube.

[0008] By adopting the above technical scheme, the filter tube, inlet tube, outlet tube, dialysate outlet tube and dialysate inlet tube are used for normal CRRT operation, the silicone cloth has a heat preservation effect and can be heated at a constant temperature in conjunction with the resistance wire, and the pipes connected to the outlet tube and the inlet tube can be heated. In addition, the silicone cloth can be extended by unwinding, which is convenient for heating pipes connected to different lengths, thereby ensuring that the temperature loss of the blood drawn from the patient and the blood injected is minimized, thereby reducing the safety risks of the patient.

[0009] In a preferred example, the utility model can be further configured as follows: the tube body heating assembly includes a cover cloth, the cover cloth is composed of a first half cover and a second half cover, and the first half cover and the second half cover are connected by Velcro.

[0010] By adopting the above technical solution, the first half cover and the second half cover can directly wrap the filter tube after the silicone cloth is covered on the outlet pipe and the inlet pipe, so as to insulate and heat the filter tube and reduce temperature loss.

[0011] In a preferred example, the utility model can be further configured as follows: the cover cloth is cylindrical, the top end of the cover cloth is processed to form an arc surface, and the top ends of the first half cover and the second half cover are both connected to the silicone cloth.

[0012] By adopting the above technical solution, the first half cover and the second half cover can be directly put on the filter tube, which can be installed quickly and save time.

[0013] In a preferred example, the utility model can be further configured as follows: heat-conducting plates are installed in the top arc surfaces of the first half cover and the second half cover, heat-conducting wires are installed in the bottoms of the first half cover and the second half cover, the heat-conducting wires are arranged in a reciprocating shape, and the top side of the heat-conducting wires is in contact with the heat-conducting plates.

[0014] By adopting the above technical solution, the heat conductive sheet can conduct heat when the resistance wire is heated, and transfer the temperature to the outside of the filter tube without affecting the heating of the inlet tube and the outlet tube, thereby facilitating the increase of the temperature inside the filter and reducing the temperature loss when filtering the blood in the filter tube.

[0015] In a preferred example, the utility model can be further configured as follows: the first half cover and the second half cover are both provided with notches at the dialysate outlet pipe and the dialysate inlet pipe, the outer side of the notches is fixedly connected with an outer insulation shell, and the two adjacent insulation shells are connected by Velcro.

[0016] By adopting the above technical solution, the notches on the first half cover and the second half cover cooperate with the insulation shell, which makes it convenient to cover the dialysate outlet pipe and the dialysate inlet pipe and insulate them when in use. The insulation shell is mainly used to conduct temperature so that the temperature of the incoming dialysate will not be too low, thereby lowering the temperature of the internal blood.

[0017] In a preferred example, the utility model can be further configured as follows: a first thermally conductive strip is fixedly connected to the bottom side of the cover cloth near the inlet pipe, and a second thermally conductive strip is fixedly connected to the top side of the cover cloth near the outlet pipe, and the first thermally conductive strip is in contact with the second thermally conductive strip.

[0018] By adopting the above technical solution, the first heat-conducting strip and the second heat-conducting strip can be used for heat conduction when in use, ensuring that the temperature in the middle of the filter tube can be kept constant, and the two-way heating prevents the temperature from losing too quickly during heat exchange.

[0019] In summary, the present invention includes at least one of the following beneficial technical effects:

[0020] 1. This CRRT filter heating device can heat the delivery pipeline connected to the filter tube itself, and can adapt to delivery pipelines of various lengths. It is easy to install and can directly wrap the connected delivery pipeline, thereby being able to insulate and heat the blood in the delivery pipeline, so that the temperature lost during the blood flow process during CRRT treatment is reduced, and the temperature of the blood delivered to the patient's body is heated, thereby improving the safety of CRRT treatment;

[0021] 2. In the CRRT filter heating device, when the heat conductive sheet is in use, as the temperature of the resistance wire in the silicone cloth increases, the temperature of the silicone cloth and the first half cover and the second half cover will absorb heat as the temperature of the resistance wire increases, and the heat conductive sheet will absorb the heat emitted by the resistance wire to increase its own temperature, and then transfer the temperature to the heat conductive wire, which can quickly increase the temperature of the first half cover and the second half cover, thereby increasing the heating area when heating the filter and improving the heating efficiency of the filter.

[0022] 3. This CRRT filter heating device has a notch that allows the insulation shell to be installed through the arc on the outside of the notch, so that the insulation shell wraps the dialysate outlet pipe and the dialysate inlet pipe. When the dialysate inlet pipe transports the dialysate, the temperature of the cover cloth will be transmitted to the insulation shell, so that the temperature of the dialysate increases, reducing the loss of blood temperature when filtering the blood. In addition, the insulation shell at the dialysate outlet pipe will be insulated to reduce the loss of temperature from the dialysate outlet pipe, resulting in a temperature drop that has a cooling effect on the temperature inside the filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 The utility model is a schematic diagram of the overall structure of a CRRT filter heating device.

[0025] Figure 2 The utility model is a schematic diagram of the dissected structure of a CRRT filter heating device.

[0026] Figure 3 For the utility model Figure 2 Enlarged structural diagram at A in the middle.

[0027] In the figure, 1, filter tube; 2, inlet tube; 3, outlet tube; 4, dialysate outlet tube; 5, dialysate inlet tube; 6, silicone cloth; 7, resistance wire; 8, tube body heating assembly; 9, cover cloth; 10, first half cover; 11, second half cover; 12, heat conductive sheet; 13, heat conductive wire; 14, slot; 15, outer insulation shell; 16, first heat conductive strip; 17, second heat conductive strip. DETAILED DESCRIPTION

[0028] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0029] Example:

[0030] Reference Figure 1-Figure 3The utility model discloses a CRRT filter heating device, comprising a filter tube 1, an inlet tube 2, an outlet tube 3, a dialysate outlet tube 4 and a dialysate inlet tube 5, wherein the inlet tube 2 is installed at the top of the filter tube 1, the outlet tube 3 is installed at the bottom of the filter tube 1, the dialysate outlet tube 4 is installed at the top of the side of the filter tube 1, and the dialysate inlet tube 5 is installed at the bottom of the side of the filter tube 1. The outer sides of the inlet tube 2 and the outlet tube 3 are sheathed with a silicone cloth 6, the top of the silicone cloth 6 located at the inlet tube 2 is rolled up in a ring shape from top to bottom, and the top of the silicone cloth 6 located at the outlet tube 3 is rolled up in a ring shape from bottom to top, a resistance wire 7 is wound inside the silicone cloth 6, and the resistance wire 7 is spirally arranged, and the silicone cloth 6 is connected to a tube body heating component 8 at one end close to the filter tube 1.

[0031] In this embodiment, the silicone cloth 6 is put on the inlet tube 2 and the outlet tube 3, and then the transport pipeline is connected to the inlet tube 2 and the outlet tube 3, and then the silicone cloth 6 rolled into a ring is pushed to unfold the rolled silicone cloth 6, and then the silicone cloth 6 will gradually wrap the transport pipeline, and the resistance wire 7 wrapped by the silicone cloth 6 is also unfolded synchronously until the silicone cloth 6 is unfolded to the specified position, and then the resistance wire 7 is connected through the circuit, so that the resistance wire 7 is heated after being energized, and a certain threshold current is input to make the resistance wire 7 reach a suitable temperature, so that the transport pipeline can be kept warm while reducing the temperature loss, and heated by the resistance wire 7 to ensure the blood temperature The temperature can be at a normal threshold. As the temperature of the resistance wire 7 increases, the temperature will be conducted to the tube body heating component 8, so that the tube body heating component 8 conducts the temperature, and then the temperature of the filter tube 1 is raised to a suitable temperature, thereby reducing the temperature loss when the blood is filtered through the dialysate. When the filtered blood is transported out, it will be heated by the resistance wire 7 at the outlet pipe 3. The temperature at the outlet pipe 3 is reduced due to the dialysate absorbing heat, and the delivery pipe at the outlet pipe 3 will be heated again by the resistance wire 7, thereby ensuring that the temperature of the blood transported to the patient's body is within the normal range, thereby ensuring the safety of the patient.

[0032] In this embodiment, the filter heating device can heat the delivery pipeline connected to the filter tube 1 itself, and can adapt to delivery pipelines of various lengths. It is easy to install and can directly wrap the connected delivery pipeline, thereby being able to insulate and heat the blood in the delivery pipeline, thereby reducing the temperature lost during blood flow during CRRT treatment, and heating the temperature of the blood delivered to the patient's body, thereby improving the safety of CRRT treatment.

[0033] In a further preferred embodiment of the present invention, Figure 1-3As shown, the tube body heating assembly 8 includes a cover cloth 9, and the cover cloth 9 is composed of a first half cover 10 and a second half cover 11, and the first half cover 10 and the second half cover 11 are connected by Velcro.

[0034] In this embodiment, the cover cloth 9 is composed of a first half cover 10 and a second half cover 11. During installation, the silicone cloth 6 is first put on the inlet pipe 2 and the outlet pipe 3, and then the end sides of the first half cover 10 and the second half cover 11 are pulled to fit the sides of the first half cover 10 and the second half cover 11, and closed with Velcro, thereby achieving the effect of wrapping the entire filter tube 1, which is convenient for heating the entire filter tube 1.

[0035] In a further preferred embodiment of the present invention, Figure 1-3 As shown, the cover cloth 9 is set in a cylindrical shape, the top end of the cover cloth 9 is processed to form an arc surface, and the top ends of the first half cover 10 and the second half cover 11 are both connected to the silicone cloth 6.

[0036] In this embodiment, the first half cover 10 and the second half cover 11 in the cover cloth 9 are connected to the set silicone cloth 6, which is convenient for synchronous installation with the silicone cloth 6 during installation. After the silicone cloth 6 is installed, the first half cover 10 and the second half cover 11 can be directly adhered, which improves the installation efficiency.

[0037] In a further preferred embodiment of the present invention, Figure 1-3 As shown, heat conducting plates 12 are installed in the top arc surfaces of the first half cover 10 and the second half cover 11, and heat conducting wires 13 are installed in the bottoms of the first half cover 10 and the second half cover 11. The heat conducting wires 13 are arranged in a reciprocating manner, and the top side of the heat conducting wires 13 is in contact with the heat conducting plates 12.

[0038] In the present embodiment, when the heat conducting sheet 12 is in use, as the temperature of the resistance wire 7 in the silicone cloth 6 increases, the temperature of the silicone cloth 6 and the first half cover 10 and the second half cover 11 will absorb heat as the temperature of the resistance wire 7 increases, and the heat conducting sheet 12 will absorb the heat emitted by the resistance wire 7 to increase its own temperature, and then transfer the temperature to the heat conducting wire 13, which can quickly increase the temperature of the first half cover 10 and the second half cover 11, thereby increasing the heating area when heating the filter and improving the heating efficiency of the filter.

[0039] In a further preferred embodiment of the present invention, Figure 1-3 As shown, the first half cover 10 and the second half cover 11 are both provided with a notch 14 at the dialysate outlet pipe 4 and the dialysate inlet pipe 5, and an outer insulation shell 15 is fixedly connected to the outer side of the notch 14, and the two adjacent insulation shells are connected by Velcro.

[0040] In this embodiment, the notch 14 is provided to facilitate the installation of the insulation shell through the curvature of the outer side of the notch 14, so that the insulation shell wraps the dialysate outlet pipe 4 and the dialysate inlet pipe 5. When the dialysate inlet pipe 5 transports the dialysate, the temperature of the cover cloth 9 will be transmitted to the insulation shell, so that the temperature of the dialysate increases, and the loss of blood temperature is reduced when filtering the blood. In addition, the insulation shell at the dialysate outlet pipe 4 will be insulated to reduce the loss of temperature from the dialysate outlet pipe 4, resulting in a temperature drop that has a cooling effect on the temperature inside the filter.

[0041] In a further preferred embodiment of the present invention, Figure 1-3 As shown, a first heat-conducting strip 16 is fixedly connected to the bottom side of the cover cloth 9 near the inlet pipe 2, and a second heat-conducting strip 17 is fixedly connected to the top side of the cover cloth 9 near the outlet pipe 3, and the first heat-conducting strip 16 and the second heat-conducting strip 17 are in contact with each other.

[0042] In this embodiment, the first thermally conductive strip 16 and the second thermally conductive strip 17 are in contact with each other, wherein the first thermally conductive strip 16 and the second thermally conductive strip 17 conduct heat to each other, so as to balance the temperatures of the two cover cloths 9 and accelerate the increase in the temperature of the filter tube 1. After the first thermally conductive strip 16 and the second thermally conductive strip 17 absorb the temperature of the cover cloth 9 and increase their own temperatures, the influence of the external low temperature and the effect of lowering the fitting point of the two cover cloths 9 are reduced.

[0043] The embodiments of this specific implementation method are all preferred embodiments of the utility model, and are not intended to limit the protection scope of the utility model. Therefore, all equivalent changes made based on the structure, shape, and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A CRRT filter heating device, comprising a filter tube (1), an inlet tube (2), an outlet tube (3), a dialysate outlet tube (4) and a dialysate inlet tube (5), wherein the inlet tube (2) is installed at the top end of the filter tube (1), the outlet tube (3) is installed at the bottom end of the filter tube (1), the dialysate outlet tube (4) is installed at the top of the side of the filter tube (1), and the dialysate inlet tube (5) is installed at the bottom of the side of the filter tube (1), characterized in that: The outer sides of the inlet pipe (2) and the outlet pipe (3) are covered with a silicone cloth (6), the top end of the silicone cloth (6) located at the inlet pipe (2) is rolled up from top to bottom in a ring shape, and the top end of the silicone cloth (6) located at the outlet pipe (3) is rolled up from bottom to top in a ring shape, a resistance wire (7) is wound inside the silicone cloth (6), and the resistance wire (7) is arranged in a spiral shape, and one end of the silicone cloth (6) close to the filter pipe (1) is connected to a pipe body heating component (8).

2. A CRRT filter heating device according to claim 1, characterized in that: The tube heating assembly (8) comprises a cover cloth (9), wherein the cover cloth (9) is composed of a first half cover (10) and a second half cover (11), wherein the first half cover (10) and the second half cover (11) are connected via Velcro.

3. A CRRT filter heating device according to claim 2, characterized in that: The cover cloth (9) is cylindrical in shape, the top end of the cover cloth (9) is processed to form an arc surface, and the top ends of the first half cover (10) and the second half cover (11) are both connected to the silicone cloth (6).

4. A CRRT filter heating device according to claim 3, characterized in that: Heat conducting plates (12) are installed in the arc surfaces at the tops of the first half cover (10) and the second half cover (11), and heat conducting wires (13) are installed in the bottoms of the first half cover (10) and the second half cover (11). The heat conducting wires (13) are arranged in a reciprocating manner, and the top side of the heat conducting wires (13) is in contact with the heat conducting plates (12).

5. A CRRT filter heating device according to claim 4, characterized in that: The first half cover (10) and the second half cover (11) are both provided with a notch (14) at the dialysate outlet pipe (4) and the dialysate inlet pipe (5), and an outer insulation shell (15) is fixedly connected to the outer side of the notch (14), and the two adjacent insulation shells are connected by Velcro.

6. A CRRT filter heating device according to claim 5, characterized in that: A first heat-conducting strip (16) is fixedly connected to the bottom side of the cover cloth (9) near the inlet pipe (2), and a second heat-conducting strip (17) is fixedly connected to the top side of the cover cloth (9) near the outlet pipe (3), and the first heat-conducting strip (16) and the second heat-conducting strip (17) are in contact with each other.

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