Portable hemodialysis device usable in a bumpy state
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-17
- Publication Date
- 2026-08-11
AI Technical Summary
传统血透机器通过蠕动泵进行输液，通过流量计或液秤来计量输液量并通过系统反馈来调整输液速度，但液秤与流量计都只能在室内使用，在不稳定的颠簸状态下会失效，计量会不够准确
本申请的透析输液装置，计量开始前，先打开第一管路的气阀，并通过气阀进行排气。然后打开阀门，液袋中的液体在重力的作用下经第二管路流进计量壶，通过第一液位传感器检测计量壶的液位达到目标液位时，关闭阀门，通过膜片泵对计量壶中的液体进行泵送至透析机器，当计量壶中的液体全部泵送完后，关闭气阀。由于进入到计量壶中的液体量是恒定的，泵送的时间是可以测定的，则能够较精确地计量出泵送时液体的流量，即使在颠簸状态下，也能够达到得到较精确的结果。
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Figure CN224612979U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of dialysis infusion equipment technology, and more specifically, to a portable hemodialysis device that can be used under bumpy conditions. Background Technology
[0002] The pump is the core component of a CRRT machine, and a multi-functional CRRT machine often contains multiple pumps. Traditional hemodialysis machines use peristaltic pumps for infusion, and use flow meters or scales to measure the infusion volume and adjust the infusion rate based on system feedback. However, scales and flow meters can only be used indoors and will fail in unstable, bumpy conditions, resulting in inaccurate measurement. Utility Model Content
[0003] This application provides a portable hemodialysis device that can be used under bumpy conditions, and can accurately measure the infusion flow rate even under bumpy conditions.
[0004] This application is implemented as follows: This application provides a portable hemodialysis device that can be used under bumpy conditions, including at least one infusion assembly. The infusion assembly includes: a first tubing, a second tubing, a diaphragm pump, a measuring vessel, a liquid bag, a valve, and a first liquid level sensor for detecting the liquid level in the measuring vessel. The two ends of the second tubing are respectively connected to the liquid bag and the measuring vessel. The liquid bag is disposed above the measuring vessel so that the liquid in the liquid bag can enter the measuring vessel through the second tubing. The valve is used to control whether the liquid in the liquid bag enters the measuring vessel. The first tubing is connected to the upper end of the measuring vessel and is equipped with an air valve. The inlet of the diaphragm pump is connected to the second tubing and can pump the liquid in the measuring vessel when the valve is closed.
[0005] In one possible implementation, the first liquid level sensor includes an upper liquid level sensor and a lower liquid level sensor, with the first liquid level sensor located at the top of the measuring vessel and the second liquid level sensor located at the bottom of the measuring vessel.
[0006] In one possible implementation, the second pipeline is U-shaped, and the inlet of the diaphragm pump is connected to the bottom end of the second pipeline via a third pipeline.
[0007] In one possible implementation, the second pipeline includes a vertically arranged first section and a third section, and a horizontally arranged second section. The two ends of the second section are respectively connected to the first section and the third section. The first section is connected to the liquid bag, and the third section is connected to the metering vessel. The valve is located in the first section. The third pipeline is arranged on the same straight line as the first section.
[0008] In one possible implementation, the valve is a pipe clamp located in the first section.
[0009] In one possible implementation, the first segment is further provided with a second liquid level sensor, which is used to detect the liquid level at the bottom of the liquid bag.
[0010] In one possible implementation, the infusion assembly is provided in three sets, with the liquid bags in the three sets of infusion assemblies respectively used to hold device replacement fluid, waste liquid and filtrate, and the diaphragm pumps of the three sets of infusion assemblies are integrated into a single structure.
[0011] In one possible implementation, the area of the integrated diaphragm pump of the three sets of infusion assemblies is within 250×250mm, and the thickness is less than or equal to 15mm.
[0012] The embodiments of this application have at least the following beneficial effects: The dialysis infusion device of this application, before metering begins, first opens the air valve of the first pipeline to purge air. Then, the valve is opened, and the liquid in the bag flows into the metering vessel through the second pipeline under the influence of gravity. When the liquid level in the metering vessel reaches the target level, the valve is closed, and the liquid in the metering vessel is pumped to the dialysis machine by a diaphragm pump. After all the liquid in the metering vessel has been pumped out, the air valve is closed. Since the amount of liquid entering the metering vessel is constant and the pumping time can be measured, the flow rate of the liquid during pumping can be measured more accurately, even under bumpy conditions, to obtain relatively accurate results. Attached Figure Description
[0013] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0014] Figure 1 This is a schematic diagram of a dialysis infusion device according to an embodiment of this application.
[0015] Icons: 10-Dialysis infusion device; 11-First tubing; 111-Gas valve; 12-Second tubing; 121-First stage; 122-Second stage; 123-Third stage; 13-Diaphragm pump; 131-Infusion tubing; 14-Metering vessel; 15-Liquid bag; 16-Tube clamp; 171-Upper level sensor; 172-Lower level sensor; 18-Second level sensor; 19-Third tubing. Detailed Implementation
[0016] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0017] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.
[0018] In the description of this application, it should be noted that the terms "upper," "lower," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0019] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Example
[0020] This embodiment provides a dialysis infusion device 10. Please refer to [reference needed]. Figure 1 It includes at least one infusion assembly, wherein the infusion assembly includes a first tubing 11, a second tubing 12, a diaphragm pump 13, a metering vessel 14, a liquid bag 15, a valve, and a first liquid level sensor for detecting the liquid level in the metering vessel 14.
[0021] For example, this embodiment provides three sets of infusion assembly. The fluid bags 15 in the three sets are respectively used to hold replacement fluid, waste fluid, and filtrate. The diaphragm pumps 13 of the three sets of infusion assembly are integrated into a single structure. The integrated area of the diaphragm pumps 13 of the three sets of infusion assembly is within 250×250mm, and the thickness is less than or equal to 15mm. It should be noted that... Figure 1For ease of demonstration, some components of the infusion assembly in the intermediate group are not shown.
[0022] The two ends of the second pipe 12 are connected to the liquid bag 15 and the metering vessel 14 respectively. The liquid bag 15 is placed on top of the metering vessel 14 so that the liquid in the liquid bag 15 can enter the metering vessel 14 through the second pipe 12. The valve is used to control whether the liquid in the liquid bag 15 enters the metering vessel 14.
[0023] For example, the second pipeline 12 is U-shaped. The second pipeline 12 includes a vertically arranged first section 121 and a third section 123, and a horizontally arranged second section 122, with both ends of the second section 122 connected to the first section 121 and the third section 123, respectively. The first section 121 is connected to the liquid bag 15, and the third section 123 is connected to the metering vessel 14. A valve is located in the first section 121. By arranging the second pipeline 12 in a U-shape, when the liquid bag 15 is placed above the metering vessel 14, the valve opens, and the liquid in the liquid bag 15 enters the metering vessel 14 under gravity.
[0024] Optionally, the valve is a pipe clamp 16 located in the first section 121. The pipe clamp 16 can control the liquid flow in the first section 121 pipeline, thereby controlling whether the liquid in the liquid bag 15 enters the metering vessel 14.
[0025] In addition, the first segment 121 is also equipped with a second liquid level sensor 18, which is used to detect the liquid level at the bottom of the liquid bag 15. The second liquid level sensor 18 can determine whether the liquid in the liquid bag 15 has been completely emptied. When the liquid in the liquid bag 15 is emptied, liquid can be injected into the liquid bag 15 again.
[0026] Additionally, it should be noted that in other embodiments, the second pipeline 12 can also be configured in other forms, such as a vertically arranged pipeline, so that when the valve is opened, the liquid in the liquid bag 15 can also enter the metering vessel 14.
[0027] The first pipeline 11 is connected to the upper end of the measuring vessel 14. The first pipeline 11 is equipped with an air valve 111. The inlet of the diaphragm pump 13 is connected to the second pipeline 12, and can pump the liquid in the measuring vessel 14 when the valve is closed. The inlet of the diaphragm pump 13 is connected to the bottom end of the second pipeline 12 through a third pipeline 19. In addition, each diaphragm pump 13 is also equipped with an infusion tube 131, which is used to deliver the liquid to the destination.
[0028] For example, the third conduit 19 is arranged on the same straight line as the first segment 121. It should be noted that in other embodiments, the third conduit 19 may not be arranged on the same straight line as the first segment 121, or the third conduit 19 and the first segment 121 may be arranged laterally offset.
[0029] The working principle of the dialysis infusion device 10 of this application is as follows: Before measurement begins, the air valve 111 of the first pipeline 11 is opened to release air. Then, the valve is opened, and the liquid in the liquid bag 15 flows into the measuring vessel 14 through the second pipeline 12 under the influence of gravity. When the liquid level in the measuring vessel 14 reaches the target level, the valve is closed, and the liquid in the measuring vessel 14 is pumped to the dialysis machine by the diaphragm pump 13. After all the liquid in the measuring vessel 14 has been pumped out, the air valve 111 is closed. Since the amount of liquid entering the measuring vessel 14 is constant and the pumping time can be measured, the flow rate of the liquid during pumping can be measured more accurately. Moreover, the diaphragm pump 13 has higher accuracy and can play a certain measuring role. Therefore, the dialysis infusion device 10 of this application can achieve more accurate results even under bumpy conditions.
[0030] For example, the first liquid level sensor includes an upper liquid level sensor 171 and a lower liquid level sensor 172. The first liquid level sensor is located at the top of the measuring vessel 14, and the second liquid level sensor 18 is located at the bottom of the measuring vessel 14.
[0031] Before measurement begins, the air valve 111 of the first pipeline 11 is opened to release air. With the valve open, the liquid in the liquid bag 15 flows into the measuring vessel 14 through the second pipeline 12 under gravity. When the liquid level in the measuring vessel 14 exceeds the upper liquid level sensor 171, it indicates that the measuring vessel 14 is full. At this point, the valve is closed, and the liquid in the measuring vessel 14 is pumped to the dialysis machine by the diaphragm pump 13. When the liquid level drops to the lower liquid level sensor 172, it indicates that the liquid in the measuring vessel 14 has been emptied. The air valve 111 is then closed, and the flow rate is calculated. Since the volume of the measuring vessel 14 is constant, the pumping time can be measured, allowing for relatively accurate measurement of the liquid flow rate during pumping, even under bumpy conditions.
[0032] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A portable hemodialysis device that can be used under bumpy conditions, characterized in that, The device includes at least one infusion assembly, comprising: a first tubing, a second tubing, a diaphragm pump, a measuring vessel, a liquid bag, a valve, and a first level sensor for detecting the liquid level in the measuring vessel. The two ends of the second tubing are respectively connected to the liquid bag and the measuring vessel. The liquid bag is positioned above the measuring vessel so that liquid in the liquid bag can enter the measuring vessel via the second tubing. The valve controls whether liquid in the liquid bag enters the measuring vessel. The first tubing is connected to the upper end of the measuring vessel and is equipped with an air valve. The inlet of the diaphragm pump is connected to the second tubing and can pump liquid from the measuring vessel when the valve is closed.
2. The portable hemodialysis device for use under bumpy conditions according to claim 1, characterized in that, The first liquid level sensor includes an upper liquid level sensor and a lower liquid level sensor. The first liquid level sensor is located at the top of the measuring vessel, and the second liquid level sensor is located at the bottom of the measuring vessel.
3. The portable hemodialysis device for use under bumpy conditions according to claim 1, characterized in that, The second pipeline is U-shaped, and the inlet of the diaphragm pump is connected to the bottom end of the second pipeline through a third pipeline.
4. The portable hemodialysis device for use under bumpy conditions according to claim 3, characterized in that, The second pipeline includes a vertically arranged first section and a third section, and a horizontally arranged second section. The two ends of the second section are connected to the first section and the third section, respectively. The first section is connected to the liquid bag, and the third section is connected to the metering vessel. The valve is located in the first section. The third pipeline is arranged on the same straight line as the first section.
5. The portable hemodialysis device for use under bumpy conditions according to claim 4, characterized in that, The valve is a pipe clamp located in the first section.
6. The portable hemodialysis device for use under bumpy conditions according to claim 4, characterized in that, The first segment is also equipped with a second liquid level sensor, which is used to detect the liquid level at the bottom of the liquid bag.
7. The portable hemodialysis device for use under bumpy conditions according to any one of claims 1 to 4, characterized in that, The infusion assembly is provided in three sets. The liquid bags in the three sets of infusion assemblies are respectively used to hold the device fluid replacement, waste liquid and filtrate. The diaphragm pumps of the three sets of infusion assemblies are integrated into a whole structure.
8. The portable hemodialysis device for use under bumpy conditions according to claim 6, characterized in that, The area of the integrated diaphragm pump of the three sets of infusion components is within 250×250mm, and the thickness is less than or equal to 15mm.