Control device based on citric acid infusion in hemodialysis and dialysis equipment

Abstract

The utility model provides a control device based on citric acid infusion in hemodialysis and dialysis equipment, an assembly box is provided with an artery end infusion pump, a vein end infusion pump, an assistant weighing module and a main controller, the assistant weighing module comprises a vertical rod fixed on the assembly box, the top of the vertical rod is provided with a weighing sensor, and the top of the vertical rod is provided with an auxiliary weighing module. The sensing end of the weighing sensor is fixedly connected with an assistant hook, the artery end infusion pump, the vein end infusion pump, the weighing sensor, the artery end infusion pump and the vein end infusion pump are all in communication connection with the main controller, the actual dosage of an assistant can be automatically monitored, regulated and controlled, and the actual dosage is made to be consistent with the needed dosage. According to the control device based on citric acid infusion in hemodialysis and the hemodialysis equipment provided by the utility model, the dosage of an auxiliary agent can be automatically monitored, regulated and controlled, the operation requirements of medical personnel are reduced, the accuracy of the dosage of the auxiliary agent is conveniently guaranteed through automatic control, and the medical effect of hemodialysis can be effectively guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a control device and a dialysis device based on citric acid infusion in hemodialysis. Background Art

[0002] In recent years, with the significant increase in the number of hemodialysis and blood purification patients, the demand for citrate anticoagulation in various treatments has shown significant differences. At the same time, the requirements for precise control of citrate dosage have become increasingly stringent, which requires that the use of anticoagulants during hemodialysis must pay more attention to safety and convenience.

[0003] Currently, the main method of adding citrate anticoagulants involves relying on the infusion function of the hemodialysis machine. However, this method has two main problems: first, the dosage control is not precise enough, which may lead to poor anticoagulation effect or adverse reactions in patients; second, adding uncommon functions to the hemodialysis machine will increase the size of the system, thereby occupying valuable space resources in the dialysis room, affecting the use of other equipment and the operating efficiency of medical staff.

[0004] That is, in the prior art, due to the lack of citrate anticoagulant infusion function, or the lack of intelligent and accurate control of the amount of citrate infusion, it is difficult for medical staff to conveniently add citrate anticoagulants when operating these devices, and the medical effect is insufficient. In particular, in the citrate double-end infusion anticoagulation technology, citrate needs to be infused into the arterial end and the venous end at the same time, and the flow rates of arterial blood and venous blood are different, and the amount of citrate is also different, which greatly increases the complexity of the operation of adding citrate. Utility Model Content

[0005] Based on this, the purpose of the utility model is to provide a control device and dialysis equipment based on citric acid infusion in hemodialysis, so as to solve the problems in the prior art of insufficient precision in controlling the dosage of auxiliary agents such as anticoagulants in hemodialysis, complex actual operation, and insufficient medical effect, especially in the citric acid double-end infusion anticoagulation technology, the problem of high complexity in the operation of adding anticoagulants.

[0006] The utility model provides a control device based on citric acid infusion in hemodialysis, comprising: an assembly box, an arterial end infusion pump, a venous end infusion pump, an auxiliary agent weighing module and a main controller arranged on the assembly box, wherein:

[0007] The additive weighing module includes a vertical pole fixed on the assembly box, a weighing sensor is arranged on the top of the vertical pole, the sensing end of the weighing sensor is fixedly connected to the additive hook, and the weighing sensor, the arterial end infusion pump and the venous end infusion pump are all communicatively connected to the main controller.

[0008] Optionally, a mounting base plate is further provided in the assembly box, the mounting base plate is spaced apart and arranged above the floor of the assembly box, a buffer gasket is fixedly provided on the mounting base plate, and the bottom end of the vertical pole is fixedly connected to the buffer gasket.

[0009] Optionally, it also includes a bubble sensor, a pinch valve, and a blood leakage sensor that are communicatively connected to the main controller, wherein:

[0010] The bubble sensor and the pinch valve are each provided in a group on the output path of the arterial end infusion pump and the venous end infusion pump;

[0011] The blood leakage sensor is arranged on the dialysis waste liquid output pipeline.

[0012] Optionally, a display is further included, the display is arranged on the top of the assembly box, the main controller is arranged inside the assembly box, the display is communicatively connected with the main controller, and the display includes a touch screen.

[0013] Optionally, the display and the vertical pole are arranged along the lateral direction of the top surface of the assembly box, and are respectively arranged on both sides of the intravenous infusion pump.

[0014] Optionally, the visible surface of the display is arranged to be tilted forward along the longitudinal direction of the assembly box.

[0015] Optionally, the top surface of the assembly box is a movable cover plate, which is screwed and fixed to the main body of the assembly box, and the vertical rod is detachably connected to the weighing sensor.

[0016] Optionally, the weighing sensor is connected to the vertical pole via a mounting sheet metal, the mounting sheet metal includes a mounting seat and a docking joint, the weighing sensor is screwed and fixed to the mounting seat, and a groove structure that can form an assembly hole after molding is provided on the docking surface of the mounting seat and the docking joint, so as to be docked and fixed to the vertical pole through the assembly hole, and the mounting seat and the docking joint are screwed and fixed.

[0017] Optionally, at least three buffer bases are provided on the floor of the assembly box, the buffer bases are fixed to the floor of the assembly box by studs, and the floor of the assembly box and the mounting base plate are matched at intervals by first nuts on the studs, and the mounting base plate is fixed to the studs by second nuts.

[0018] The utility model also provides a dialysis device, comprising the above-mentioned control device based on citric acid infusion in hemodialysis.

[0019] The utility model provides a control device for citric acid infusion in hemodialysis, comprising: an assembly box, an arterial infusion pump, a venous infusion pump, an auxiliary agent weighing module and a main controller arranged on the assembly box, wherein the auxiliary agent weighing module comprises a vertical pole fixed on the assembly box, a weighing sensor is arranged on the top of the vertical pole, the sensing end of the weighing sensor is fixedly connected with an auxiliary agent hook, and the arterial infusion pump, the venous infusion pump and the weighing sensor are all communicatively connected with the main controller. During use, the user can input the blood flow of the dialyzer, the concentration of the auxiliary solution used, the required auxiliary dosage and other data into the main controller. The main controller can automatically control the infusion speed of the arterial infusion pump and the venous infusion pump according to the input data and the preset control logic, and obtain the actual consumption rate of the auxiliary according to the sensor data of the weighing sensor, and then obtain the actual auxiliary dosage. When there is a deviation between the actual auxiliary dosage and the required auxiliary dosage, the infusion speed of the arterial infusion pump and the venous infusion pump is automatically and synchronously adjusted until the actual auxiliary dosage is consistent with the required auxiliary dosage, thereby realizing the monitoring and automatic regulation of the auxiliary dosage. The control device based on citric acid infusion in hemodialysis provided by the utility model can automatically realize the monitoring and regulation of the auxiliary dosage, reduce the operation requirements of medical staff, and the accuracy of the auxiliary dosage is guaranteed, which can effectively improve the medical effect of hemodialysis. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the main structure of a control device based on citric acid infusion in hemodialysis in an embodiment of the utility model;

[0021] Figure 2 It is a partial structural cross-sectional view of a control device based on citric acid infusion in hemodialysis in an embodiment of the utility model;

[0022] Figure 3 for Figure 2 A schematic diagram of the local enlarged structure of the middle A area;

[0023] Figure 4 It is a schematic diagram of the safety monitoring principle of the control device based on citrate infusion in hemodialysis in the embodiment of the utility model in the dialysis system.

[0024] The following specific implementation manner will further illustrate the present utility model in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0025] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0026] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0028] In order to solve the problems of insufficient control precision of the dosage of auxiliary agents such as anticoagulants in hemodialysis, complex actual operation and insufficient medical effect in the prior art. The utility model provides a control device based on citric acid infusion in hemodialysis, equipped with an auxiliary agent weighing module, according to the change of the sensor data of the auxiliary agent weighing module, combined with the concentration of the auxiliary agent solution and the blood delivery speed of the dialyzer and other data, the actual dosage of the auxiliary agent can be obtained, and at the same time, the main controller can uniformly regulate the delivery speed of the venous end infusion pump and the arterial end infusion pump according to the preset speed ratio, and can make the actual dosage of the auxiliary agent consistent with the required dosage, and can automatically realize the monitoring and regulation of the dosage of the auxiliary agent, reduce the operation requirements of medical staff, and the accuracy of the dosage of the auxiliary agent is guaranteed, which can effectively improve the medical effect of hemodialysis.

[0029] The auxiliary agent is, for example, citric acid, and its dosage needs to be determined according to the calcium ion concentration in the blood. The infusion speed ratio of the venous infusion pump and the arterial infusion pump is, for example, 1:4. This application does not make any special restrictions on this, and the actual selection can be made according to the specific medical situation.

[0030] It can be understood that the above-mentioned calculation and control principles are existing medical principles. The programmable logic controller, single-chip microcomputer, central processing unit and other controllers in the prior art combined with the corresponding peripheral design can meet their control needs. In the case that the specific structure and programming logic of the main controller in this application are not particularly disclosed in this application, those skilled in the art can combine the existing technology to implement the above-mentioned calculation and control logic of this application without paying additional creative labor, and achieve the technical purpose of this application.

[0031] Specifically, see Figure 1 , Figure 2 and Figure 3, shown is a schematic diagram of the structure of each part of the infusion control device of this embodiment, including: an assembly box 10, an arterial end infusion pump 21, a venous end infusion pump 22, an auxiliary agent weighing module and a main controller 50 arranged on the assembly box 10, and each part is communicatively connected with the main controller 50 to realize data transmission and interactive control.

[0032] The assembly box 10 is preferably made of light-shielding material, which can reduce the impact of ambient light on detection and improve reliability.

[0033] The additive weighing module includes a vertical pole 31 fixed on the assembly box 10, and a weighing sensor 32 is arranged on the top of the vertical pole 31. The sensing end of the weighing sensor 32 is fixedly connected to the additive hook 33. When in use, the additive solution bag is hung on the additive hook 33. As the additive is consumed, the weight of the additive solution bag decreases. The main controller 50 can obtain the consumption of the additive solution through the change in the weighing data of the weighing sensor 32, and can obtain the real-time usage of the additive by combining the concentration of the additive solution pre-entered by the user.

[0034] The weighing sensor 32 can also be arranged inside the assembly box 10, the weighing end is connected to the vertical pole 31, and the auxiliary agent hook 33 can be welded and fixed on the vertical pole 31. In this embodiment, the measurement is mainly achieved by making a difference, and the weight influence of the vertical pole 31 and the auxiliary agent hook 33 does not need to be calibrated in the configuration. When the weighing sensor 32 is arranged inside the assembly box 10, in order to ensure the reliability of the measurement, it is necessary to ensure that the vertical pole 31 is upright and has no friction with the assembly box 10.

[0035] To ensure the weighing accuracy, in the present embodiment, a mounting base plate 13 is further provided in the assembly box 10. The mounting base plate 13 is spaced above the floor of the assembly box 10, and a buffer gasket 311 is fixedly provided on the mounting base plate 13. The bottom end of the vertical rod 31 is fixedly connected to the buffer gasket 311, which can reduce the impact of the vibration of the assembly box 10 on the mounting base plate 13, thereby ensuring the mechanical stability of the additive weighing module and ensuring the weighing accuracy.

[0036] To improve the safety of dialysis, in this embodiment, a bubble sensor 41, a clamping valve 42, and a blood leakage sensor 43 are also included, which are communicatively connected to the main controller 50. The arterial infusion pump 21 and the venous infusion pump 22 are arranged on the top of the assembly box 10 (the pump body of the delivery pump is located in the assembly box 10, and the structure for installing the access infusion tube is exposed to the outside), and are arranged in parallel and spaced apart along the longitudinal direction of the top surface of the assembly box 10. In this embodiment, the top surface of the assembly box 10 is a rectangular structure, and the longitudinal direction is the width direction, so as to provide sufficient assembly space for the display 51.

[0037] Correspondingly, the clamping valve 42, the blood leakage sensor 43 and the arterial end infusion pump 21 are arranged in sequence and spaced apart along the horizontal direction of the assembly box 10. The blood leakage sensor 43 is arranged on the top of the assembly box 10, and the clamping valve 42 is arranged on the side of the assembly box 10, which can improve the space utilization of the assembly box 10, improve the integration, and reduce the footprint.

[0038] The bubble sensor 41, the vertical rod 31 and the intravenous infusion pump 22 are arranged in sequence and spaced apart along the lateral direction of the assembly box 10. The bubble sensor 41 and the clamping valve 42 are arranged on the same side of the assembly box 10 and at the same height.

[0039] In use, such as Figure 4 As shown, corresponding to the double-end anticoagulant infusion technology, two groups of bubble sensors 41 and clamping valves 42 are provided, and are respectively arranged on the infusion path from the arterial end infusion pump 21 to the arterial end of dialysis, and on the infusion path from the venous end infusion pump 22 to the venous end of dialysis. Among them, the clamping valve 42 is arranged downstream of the bubble sensor 41. When the bubble sensor 41 detects bubbles in the corresponding pipeline, the downstream pipeline can be closed in time to avoid the bubbles from being transported into the dialysis pipeline, thereby ensuring medical safety.

[0040] The blood leakage sensor 43 is arranged on the waste liquid output pipeline of the dialyzer, and is used to monitor whether there is blood in the dialysate waste liquid outputted from the waste liquid output pipeline, so as to judge whether there is blood leakage between the blood pipeline and the dialysate pipeline of the dialyzer, and then judge whether the dialysis treatment is normal. When blood leakage occurs, an alarm can be triggered to alert medical staff, or a control signal can be sent to the dialyzer to control the dialysis to stop. The blood leakage sensor 43 can be, for example, an MLX06 sensor, which can accurately detect the blood leakage problem.

[0041] The pinch valve 42 and the bubble sensor 41 are provided in two groups and are arranged on the input pipeline, while the blood leakage sensor 43 is provided in one group and is arranged on the waste liquid output path. In order to facilitate the distinction of the arrangement position of the infusion tube, in this embodiment, Figure 1 As shown, the clamping valve 42 and the bubble sensor 41 are led out from the side of the assembly box 10, and the blood leakage sensor 43 is led out from the top surface of the assembly box 10. On the one hand, it is easy to distinguish, and on the other hand, the waste liquid output pipeline can be placed on the upper layer of the pipeline, which is convenient for the naked eye to visually observe the state of the waste liquid output pipeline. Therefore, when the blood leakage sensor 43 fails, it can be manually observed in time whether there is a blood leakage problem, thereby improving medical safety.

[0042] It can be understood that the present application is mainly about the weighing design of the auxiliary agent and the realization of automatic infusion, and the specific arrangement positions of the pinch valve 42, the bubble sensor 41, the blood leakage sensor 43, the arterial end infusion pump 21, the venous end infusion pump 22 and the auxiliary agent weighing module have no special influence on the realization of automatic infusion. Without departing from the automatic design architecture of the present application, those skilled in the art have adopted the following Figure 1 Layouts other than the one shown should all fall within the protection scope of this application.

[0043] To facilitate obtaining the infusion status, in this embodiment, a display 51 is also included. The display 51 is arranged on the top of the assembly box 10, and the main controller 50 is arranged inside the assembly box 10. The display 51 is communicatively connected with the main controller 50. The display 51 includes a touch screen, which is convenient for inputting various control parameters to the main controller 50 through the touch screen, and obtaining medical parameters such as calcium ion concentration, blood delivery speed, auxiliary agent delivery speed, and auxiliary agent concentration in real time, so that various medical staff can understand the dialysis status in real time.

[0044] The display 51 and the vertical pole 31 are arranged horizontally along the top surface of the assembly box 10 and are respectively arranged on both sides of the intravenous infusion pump 22, separating the layout space of the infusion pipeline from the control operation space of the equipment, avoiding interference between the two operations and improving reliability of use.

[0045] To facilitate interactive operations, in this embodiment, the visible surface of the display 51 is tilted forward along the longitudinal direction of the assembly box 10, which can facilitate the user to observe the displayed content in an upright posture and facilitate touch operations.

[0046] To facilitate the installation and maintenance of the infusion control device, in the present embodiment, the top surface of the assembly box 10 is a movable cover 11, which is screwed and fixed to the main body of the assembly box 10, and the vertical rod 31 is detachably connected to the weighing sensor 32, so that a smaller window consistent with the cross-sectional size of the vertical rod 31 can be provided on the movable cover 11, thereby ensuring the smooth installation of the movable cover 11. After the installation is completed, the exposed area on the movable cover 11 is small, which can reduce the risk of dust and other pollutants entering the interior of the infusion control device and improve reliability.

[0047] Among them, the window accessories corresponding to the vertical pole 31 arranged on the movable cover 11 are also provided with a sensor communication window to facilitate the arrangement of the communication cable between the weighing sensor 32 and the main controller 50 inside the assembly box 10. In an optional embodiment, the vertical pole 31 is a hollow pole, and the communication cable between the weighing sensor 32 and the main controller 50 can also be arranged in the vertical pole 31, which can further reduce the window area on the movable cover 11.

[0048] To facilitate the installation of the weighing sensor 32, in this embodiment, the weighing sensor 32 is connected to the vertical pole 31 through the mounting sheet metal 34. The mounting sheet metal 34 includes a mounting seat 341 and a butt joint 342. The weighing sensor 32 is screwed and fixed on the mounting seat 341. The mounting seat 341 and the butt joint 342 are provided with a groove structure that can form an assembly hole after mold closing, so as to be butted and matched with the vertical pole 31 through the assembly hole. After mold closing and butt jointing, the mounting seat 341 and the butt joint 342 are screwed and fixed, so that the mounting sheet metal 34 and the weighing sensor 32 fixed thereon can be fixed on the vertical pole 31. Among them, since the weighing sensor 32 is fixed on the mounting seat 341 of the mounting sheet metal 34, it is not necessary to touch the weighing sensor 32 when it is installed on the vertical pole 31, which will avoid damage to the weighing sensor 32 during the installation operation, ensure the effectiveness of the weighing sensor 32, and then ensure the monitoring accuracy and effectiveness of the amount of auxiliary agent infusion.

[0049] In order to further reduce the impact of the vibration of the external bearing ground on the weight and various components of the system, in this embodiment, Figure 2 and Figure 3 As shown, at least three buffer bases 101 are also arranged on the floor of the assembly box 10, and the buffer base 101 is fixed to the floor of the assembly box 10 by studs, and the floor of the assembly box 10 and the installation base plate 13 are spaced and matched by the first nuts on the studs, and the installation base plate 13 is also fixed to the studs by second nuts, which can improve the integration of the fixing structure. The buffer base 101 is made of materials such as rubber, polyurethane, and silicone.

[0050] The main controller 50, energy storage power supply, switching power supply, etc. can all be arranged on the mounting base plate 13 to ensure their reliability.

[0051] The control device based on citric acid infusion in hemodialysis provided by the utility model can automatically monitor and regulate the dosage of auxiliary agents, reduce the operation requirements of medical personnel, and ensure the accuracy of the dosage of auxiliary agents, which can effectively improve the medical effect of hemodialysis.

[0052] The utility model also provides a dialysis device, including the above-mentioned control device based on citric acid infusion in hemodialysis, which can realize automatic monitoring and regulation of the amount of dialysis aids used, and can also realize the monitoring of dialysis blood leakage, which can effectively reduce the complexity of dialysis operation and improve medical efficiency and reliability.

[0053] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" 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 utility model. 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.

[0054] The above-mentioned embodiments only express several specific implementation methods of the utility model, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the protection scope of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A control device based on citrate infusion in hemodialysis, characterized in that: include: An assembly box, an arterial infusion pump, a venous infusion pump, an auxiliary agent weighing module and a main controller arranged on the assembly box, wherein: The additive weighing module includes a vertical pole fixed on the assembly box, a weighing sensor is arranged on the top of the vertical pole, the sensing end of the weighing sensor is fixedly connected to the additive hook, and the weighing sensor, the arterial end infusion pump and the venous end infusion pump are all communicatively connected to the main controller.

2. The control device based on citrate infusion in hemodialysis according to claim 1, characterized in that: A mounting base plate is also provided in the assembly box. The mounting base plate is spaced above the floor of the assembly box. A buffer gasket is fixedly provided on the mounting base plate. The bottom end of the vertical rod is fixedly connected to the buffer gasket.

3. The control device based on citric acid infusion in hemodialysis according to claim 1, characterized in that: It also includes a bubble sensor, a pinch valve, and a blood leakage sensor that are communicatively connected to the main controller, wherein: The bubble sensor and the pinch valve are each provided in a group on the output path of the arterial end infusion pump and the venous end infusion pump; The blood leakage sensor is arranged on the dialysis waste liquid output pipeline.

4. The control device based on citric acid infusion in hemodialysis according to claim 3, characterized in that: It also includes a display, which is arranged on the top of the assembly box. The main controller is arranged inside the assembly box. The display is communicatively connected with the main controller, and the display includes a touch display screen.

5. The control device based on citrate infusion in hemodialysis according to claim 4, characterized in that: The display and the vertical pole are arranged along the lateral direction of the top surface of the assembly box and are respectively arranged on both sides of the intravenous infusion pump.

6. The control device based on citrate infusion in hemodialysis according to claim 5, characterized in that: The visible surface of the display is arranged to be tilted forward along the longitudinal direction of the assembly box.

7. The control device based on citric acid infusion in hemodialysis according to any one of claims 1 to 6, characterized in that: The top surface of the assembly box is a movable cover plate, which is screwed and fixed to the main body of the assembly box, and the vertical rod is detachably connected to the weighing sensor.

8. The control device based on citrate infusion in hemodialysis according to claim 7, characterized in that: The weighing sensor is connected to the vertical pole through a mounting sheet metal, and the mounting sheet metal includes a mounting seat and a docking joint. The weighing sensor is screwed and fixed to the mounting seat. A groove structure that can form an assembly hole after molding is provided on the docking surface of the mounting seat and the docking joint, so as to be docked and fixed to the vertical pole through the assembly hole. The mounting seat and the docking joint are screwed and fixed.

9. The control device based on citrate infusion in hemodialysis according to claim 2, characterized in that: At least three buffer bases are also arranged on the floor of the assembly box, and the buffer bases are fixed to the floor of the assembly box through studs. The floor of the assembly box and the installation base plate are matched at intervals through first nuts on the studs, and the installation base plate is fixed to the studs through second nuts.

10. A dialysis device, characterized in that: A control device for citrate infusion in hemodialysis comprising any one of claims 1 to 9.

Images