Pressure monitor and blood purification equipment

Abstract

The utility model belongs to the technical field of medical instruments, and discloses a pressure monitor and blood purification equipment. The blood purification equipment comprises an equipment body and a pressure monitor, wherein the pressure monitor is arranged on the equipment body. The pressure detector comprises a pressure sensor, a pressure bag and a control assembly, a first magnetic attraction part is arranged in the pressure sensor, a second magnetic attraction part is arranged in the pressure bag, and the control assembly is connected with the first magnetic attraction part or the second magnetic attraction part and used for controlling whether magnetic attraction force of the first magnetic attraction part or the second magnetic attraction part exists or not; the pressure sensor and the pressure bag can be attracted through magnetic attraction force so as to detect the pressure of fluid passing through the pressure bag. Magnetic attraction force is generated between the first magnetic attraction piece and the second magnetic attraction piece by adjusting the control assembly, the pressure sensor and the pressure bag are matched through magnetic attraction, it is guaranteed that the pressure sensor and the pressure bag are rapidly and conveniently combined together, and the pressure sensor and the pressure bag are stably connected by setting the proper magnetic attraction force; and the appearance is simple and smooth.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a pressure monitor and blood purification equipment. Background Art

[0002] Blood purification therapy refers to drawing blood out of the body and removing harmful substances from the blood through a purification device, thereby achieving the purpose of treating the disease. During the entire process of blood purification therapy, a pressure monitor needs to be set up to detect the power and pressure of the liquids in each pipeline, such as blood, dialysate, and replacement fluid. Once the blood circuit conditions change, such as blocked blood flow, coagulation of the purification device, folding of the blood circuit tube, and detachment of the connector, the pressure monitor can monitor the pressure, issue an alarm in time, and take measures to ensure the safety of blood purification therapy.

[0003] During the whole process of blood purification treatment, it is necessary to detect the power and pressure of the liquids in various pipelines such as blood, dialysate and replacement fluid. In the prior art, the pressure sensor and the pressure capsule are closely matched to effectively measure the pressure; the combination of the pressure sensor and the pressure capsule needs to be additionally provided with a fixed pressure head to be pressed or connected by edge clamping. The additional fixed pressure head makes the appearance structure complicated and difficult to clean and disinfect; the edge clamping is easy to be stuck or stuck and cannot be smoothly put into place.

[0004] That is, there is an urgent need to provide a pressure monitor including a pressure sensor and a pressure bag, so that the pressure sensor and the pressure bag can be connected quickly, stably and smoothly. Utility Model Content

[0005] The utility model aims to provide a pressure monitor and a blood purification device, so as to realize a quick, stable and smooth connection between a pressure sensor and a pressure bag.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] The utility model provides a pressure monitor, which comprises:

[0008] A pressure sensor, wherein a first magnetic attraction member is provided in the pressure sensor;

[0009] A pressure bag, wherein a second magnetic attraction member is disposed in the pressure bag;

[0010] A control component, connected to the first magnetic attraction component or the second magnetic attraction component, and used to control the presence or absence of magnetic attraction of the first magnetic attraction component or the second magnetic attraction component;

[0011] The pressure sensor and the pressure bag can be attracted to each other through the magnetic attraction force to detect the pressure of the fluid passing through the pressure bag.

[0012] As an optional technical solution of a pressure monitor, the first magnetic attraction member is an electromagnet, and the control component is connected to the electromagnet;

[0013] The second magnetic attraction member is made of a metal material that can be magnetically attracted.

[0014] As an optional technical solution of a pressure monitor, the pressure monitor further includes a limiting structure, which is arranged on the surface of the pressure sensor or the pressure bag and is used to limit the relative position of the pressure sensor and the pressure bag.

[0015] As an optional technical solution of a pressure monitor, the limiting structure is a limiting strip protruding from the pressure sensor, and the limiting strip is used to stop the outer edge of the pressure bag;

[0016] Alternatively, the limiting structure includes a limiting strip convexly arranged on the pressure bag and a groove concavely arranged in the pressure sensor, and the limiting strip cooperates with the groove.

[0017] As an optional technical solution for a pressure monitor, at least two limit bars are provided on the pressure sensor, and the two limit bars are arranged at intervals along the circumference of the pressure bag. The interval between the two limit bars forms a pipeline area, and the pipeline area is used to install a fluid pipeline.

[0018] As an optional technical solution for a pressure monitor, a diaphragm is provided on the pressure sensor, and a membrane for transmitting pressure is provided on the pressure bag. When the pressure sensor and the pressure bag are attracted, the diaphragm can fit tightly with the diaphragm to transmit pressure to the diaphragm.

[0019] As an optional technical solution of a pressure monitor, the projection of the diaphragm along the vertical direction is located within the projection range of the first magnetic attraction member along the vertical direction;

[0020] And / or, a projection of the diaphragm along the vertical direction is located within a projection range of the second magnetic attraction component along the vertical direction.

[0021] As an optional technical solution for a pressure monitor, the second magnetic attraction member is an iron ring buried in the pressure bag.

[0022] As an optional technical solution for a pressure monitor, the pressure sensor includes a first body and a second body, the second body is sleeved on the outside of the first body, the first body is provided with a gold-plated film surface, an electromagnetic coil is provided around the outer periphery of the first body, the first body and the electromagnetic coil form the electromagnet; the electromagnetic coil is located between the first body and the second body.

[0023] The utility model provides a blood purification device, which comprises a device body and a pressure monitor, wherein the pressure monitor is arranged on the device body.

[0024] Beneficial effects:

[0025] The utility model provides a pressure monitor, which includes a pressure sensor, a pressure capsule and a control component. The pressure sensor is provided with a first magnetic component, the pressure capsule is provided with a second magnetic component, and the control component is connected to the first magnetic component or the second magnetic component to control the presence or absence of magnetic attraction of the first magnetic component or the second magnetic component; the pressure sensor and the pressure capsule can be attracted by magnetic attraction to detect the pressure of the fluid passing through the pressure capsule. By adjusting the control component, a magnetic attraction is generated between the first magnetic component and the second magnetic component, and the pressure sensor and the pressure capsule cooperate through magnetic attraction, which ensures that the pressure sensor and the pressure capsule are quickly and conveniently combined together, and the two are firmly connected by setting a suitable magnetic attraction force; the appearance is simple and smooth, and it is easy to clean and disinfect.

[0026] The utility model provides a blood purification device, which includes a device body and a pressure monitor, wherein the pressure monitor is arranged on the device body. By arranging a magnetically matched pressure sensor and a pressure capsule, the pressure sensor and the pressure capsule are connected quickly, stably and smoothly, thereby improving the stability of the connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a disassembled diagram of the pressure monitor provided by the embodiment of the utility model;

[0028] Figure 2 is a cross-sectional view of a pressure monitor provided by an embodiment of the utility model;

[0029] Figure 3 yes Figure 2 A partial enlarged view of the middle A;

[0030] Figure 4 It is a structural schematic diagram of a pressure monitor provided by an embodiment of the utility model;

[0031] Figure 5 This is a schematic diagram of the structure of the pressure bag provided by the embodiment of the utility model Figure 1 ;

[0032] Figure 6 This is a schematic diagram of the structure of the pressure bag provided by the embodiment of the utility model Figure 2 .

[0033] In the figure:

[0034] 10. pressure sensor; 11. limit structure; 12. diaphragm; 13. pipeline area; 14. first magnetic attraction member; 15. electric wire;

[0035] 20. Pressure bladder;

[0036] 21. substrate; 211. flow channel; 212. measuring cavity; 213. second magnetic attraction member;

[0037] 22. Diaphragm. DETAILED DESCRIPTION

[0038] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0039] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0041] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0042] like Figure 1 and Figure 2As shown, the utility model provides a pressure monitor and a blood purification device, the blood purification device includes a device body and a pressure monitor, and the pressure monitor is arranged on the device body. The pressure monitor includes a pressure sensor 10 and a pressure capsule 20, and a first magnetic attraction member 14 is arranged in the pressure sensor 10. The pressure sensor 10 and the pressure capsule 20 can be attracted by magnetic attraction to detect the pressure of the fluid passing through the pressure capsule 20.

[0043] Specifically, the pressure bag 20 is arranged above the pressure sensor 10; the pressure sensor 10 includes a first body and a second body, the second body is sleeved on the outside of the first body, and a first magnetic attraction member 14 is arranged between the first body and the second body.

[0044] In this embodiment, the first body is in the shape of a disk, the second body is in the shape of a ring, the second body is sleeved on the outside of the first body, the outer wall of the first body and the inner wall of the second body are enclosed to form an installation space, and the first magnetic member 14 is arranged in the installation space; the first magnetic member 14 is in the shape of a ring, and the first magnetic member 14 is located near the top of the pressure sensor 10, so as to be attracted to the pressure bag 20; the fluid is blood. In other embodiments, the fluid may also be other liquids.

[0045] Specifically, the top of the first body is exposed from the middle of the second body, and a diaphragm 12 is provided at the top of the first body, so as to fit closely with the pressure capsule 20. The pressure capsule 20 can sense pressure and transmit the sensed pressure to the diaphragm 12; the diaphragm 12 has a gold-plated film surface, and the diaphragm 12 is the main position for sensing pressure of the pressure sensor 10. To ensure the stability of pressure transmission, the projection of the diaphragm 12 in the vertical direction is located within the range of the projection of the first magnetic member 14 in the vertical direction, so that the diaphragm 12 can be stably attached to the pressure capsule 20.

[0046] The pressure monitor further includes a control component, which is connected to the first magnetic member 14 and is used to control the presence or absence of magnetic attraction of the first magnetic member 14; the first magnetic member 14 is an electromagnet. The first magnetic member 14 is connected to the control component via a power line 15, which can extend to the gap between the outer wall of the first body and the inner wall of the second body and is connected to the first magnetic member 14.

[0047] In this embodiment, a gold-plated surface is provided on the first body, an electromagnetic coil is provided around the outer periphery of the first body, the first body and the electromagnetic coil form an electromagnet, and the electromagnetic coil is located between the first body and the second body.

[0048] It is understandable that whether the first magnetic member 14 is powered on or not can be controlled by the running program of the control component; when the program runs to the point where the pressure capsule 20 needs to be installed on the pressure sensor 10, the program will give corresponding instructions, and the first magnetic member 14 will be powered on through the power line 15 to produce a magnetic effect; when the program runs to the point where the pressure capsule 20 needs to be removed, the program will disconnect the power state of the power line 15, thereby removing the pressure capsule 20 from the pressure sensor 10. In other embodiments, a manual switch button can also be provided to realize the power on and off of the power line 15.

[0049] In order to limit the relative position of the pressure sensor 10 and the pressure capsule 20 when they are attracted, the pressure monitor further includes a limiting structure 11 disposed on the pressure sensor 10. The limiting structure 11 is a limiting strip convexly disposed on the surface of the second body, and the limiting strip is used to stop the outer edge of the pressure capsule 20. In other embodiments, the limiting structure 11 includes a limiting strip and a groove, the limiting strip convexly disposed on the surface of the pressure capsule 20, the groove concavely disposed in the second body of the pressure sensor 10, the groove being disposed around the first body, and the groove being used to cooperate with the limiting structure 11 to limit the relative position of the pressure capsule 20 and the pressure sensor 10, and ensure that the diaphragm 12 can be stably attached to the pressure capsule 20.

[0050] Furthermore, at least two limit bars are provided on the pressure sensor 10, and the two limit bars are arranged at intervals along the circumference of the pressure capsule 20, and the interval between the two limit bars forms a pipeline area 13, and the pipeline area 13 is used to install the fluid pipeline. By providing at least two limit bars to form the pipeline area 13, it is avoided that the limit structure 11 interferes with the fluid pipeline after the pressure sensor 10 and the pressure capsule 20 are attracted. Preferably, the limit bar is arc-shaped.

[0051] like Figures 2 to 6 As shown, the pressure bag 20 includes a base body 21, in which a measuring cavity 212 and a flow channel 211 are provided, the flow channel 211 includes a liquid inlet flow channel and a liquid outlet flow channel, the measuring cavity 212 is located in the middle of the base body 21, and the liquid inlet flow channel and the liquid outlet flow channel are respectively located on both sides of the measuring cavity 212; one end of the liquid inlet flow channel is connected to the measuring cavity 212, and the other end of the liquid inlet flow channel is used to connect to the liquid inlet pipeline; one end of the liquid outlet flow channel is connected to the measuring cavity 212, and the other end of the liquid outlet flow channel is used to connect to the liquid outlet pipeline.

[0052] Preferably, the measuring cavity 212 is an arc-shaped cavity. The central space of the arc-shaped cavity is smaller than the surrounding space, which promotes the flow of fluid and avoids the phenomenon of blood coagulation.

[0053] The pressure capsule 20 also includes a diaphragm 22, which is used to transmit pressure. The diaphragm 22 is arranged on the base 21, and the diaphragm 22 closes the measuring cavity 212 to isolate the fluid from the air. The diaphragm 22 can transmit pressure and separate the fluid from the air, effectively avoiding cross infection and improving the accuracy and precision of monitoring. After the pressure sensor 10 and the pressure capsule 20 are attracted, the diaphragm 22 can fit tightly to the diaphragm 12 to transmit the pressure to the diaphragm 12.

[0054] In this embodiment, the diaphragm 22 is made of silicone material; the diaphragm 22 is exposed from the middle of the base 21 , and the diaphragm 22 is used to fit tightly with the diaphragm 12 of the pressure sensor 10 to transmit the pressure to the diaphragm 12 .

[0055] In order to fix the diaphragm 22 on the base 21, a positioning groove is provided on the base 21, and a connecting portion is convexly provided on the edge of the diaphragm 22, and the connecting portion is pressed into the positioning groove to fix the diaphragm 22. By providing the connecting portion and the positioning groove, the connecting portion is pressed into the positioning groove, so that the diaphragm 22 is stably fixed on the base 21, and the diaphragm 22 is prevented from being separated from the base 21 under the action of fluid pressure. In this embodiment, the diaphragm 22 is circular; the connecting portion is a circular protrusion, which is conducive to ensuring that the edge of the diaphragm 22 is evenly pressed on the base 21.

[0056] In order to attract the pressure sensor 10, a second magnetic member 213 is provided in the base 21, and the second magnetic member 213 is made of a metal material that can be magnetically attracted. In this embodiment, the second magnetic member 213 is made of iron material, and the second magnetic member 213 is in a circular ring shape; the second magnetic member 213 is buried in the base 21. In other embodiments, the first magnetic member 14 can also be set as an iron ring, and the second magnetic member 213 can be an electromagnet; the first magnetic member 14 can also be set as a permanent magnet, and a switch knob can be set on the pressure sensor 10, and the switch knob control circuit can be used to realize the magnetization and demagnetization of the permanent magnet, thereby controlling the presence or absence of magnetic attraction; the second magnetic member 213 is set as an iron ring.

[0057] To ensure the stability of pressure conduction, the vertical projection of the diaphragm 22 is within the vertical projection of the second magnetic member 213, so that the diaphragm 12 can be stably attached to the pressure bag 20. That is, the inner diameter of the second magnetic member 213 is larger than the outer diameter of the diaphragm 22.

[0058] The following is the specific installation and use process of the pressure monitor:

[0059] The first body, the second body and the first magnetic member 14 are assembled to obtain the pressure sensor 10 .

[0060] The pressure capsule 20 is arranged above the pressure sensor 10, and the control component is adjusted so that the first magnetic component 14 is energized to generate a magnetic field. The first magnetic component 14 attracts the second magnetic component 213, so that the pressure capsule 20 fits the pressure sensor 10. Under the action of the limiting structure 11, the pressure capsule 20 is attracted between the two limiting strips to ensure the correct positioning of the pressure capsule 20.

[0061] The fluid enters from the liquid inlet channel, passes through the measuring cavity 212, and finally flows out from the liquid outlet channel; the pressure generated by the fluid passing through the measuring cavity 212 is transmitted to the diaphragm 22 of the pressure bag 20, and the diaphragm 22 transmits the induced pressure to the diaphragm 12 of the pressure sensor 10. The diaphragm 12 generates strain, causing the strain resistor directly diffused thereon to produce a change proportional to the measured pressure, and then the corresponding voltage output signal is obtained by the bridge circuit to test the corresponding pressure.

[0062] By adjusting the control component, a magnetic force is generated between the first magnetic component 14 and the second magnetic component 213. The pressure sensor 10 and the pressure capsule 20 cooperate through magnetic attraction, ensuring that the pressure sensor 10 and the pressure capsule 20 are quickly and conveniently combined together. By setting a suitable magnetic force, the two are firmly connected; the appearance is simple and smooth, which is easy to clean and disinfect.

[0063] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A pressure monitor, characterized in that: include: A pressure sensor, wherein a first magnetic attraction member is provided in the pressure sensor; A pressure bag, wherein a second magnetic attraction member is disposed in the pressure bag; A control component, connected to the first magnetic attraction component or the second magnetic attraction component, and used to control the presence or absence of magnetic attraction of the first magnetic attraction component or the second magnetic attraction component; The pressure sensor and the pressure bag can be attracted to each other through the magnetic attraction force to detect the pressure of the fluid passing through the pressure bag.

2. The pressure monitor according to claim 1, characterized in that: The first magnetic attraction member is an electromagnet, and the control component is connected to the electromagnet; The second magnetic attraction member is made of a metal material that can be magnetically attracted.

3. The pressure monitor according to claim 1, characterized in that: The pressure monitor further comprises a limiting structure, which is arranged on the surface of the pressure sensor or the pressure bag and is used to limit the relative position of the pressure sensor and the pressure bag.

4. The pressure monitor according to claim 3, characterized in that: The limiting structure is a limiting strip protruding from the pressure sensor, and the limiting strip is used to stop the outer edge of the pressure bag; Alternatively, the limiting structure includes a limiting strip convexly arranged on the pressure bag and a groove concavely arranged in the pressure sensor, and the limiting strip cooperates with the groove.

5. The pressure monitor according to claim 4, characterized in that: At least two of the limit strips are arranged on the pressure sensor, and the two limit strips are arranged at intervals along the circumference of the pressure bag. The interval between the two limit strips forms a pipeline area, and the pipeline area is used to install a fluid pipeline.

6. The pressure monitor according to claim 2, characterized in that: The pressure sensor is provided with a diaphragm, and the pressure bag is provided with a diaphragm for transmitting pressure. When the pressure sensor and the pressure bag are attracted, the diaphragm can be closely attached to the diaphragm to transmit the pressure to the diaphragm.

7. The pressure monitor according to claim 6, characterized in that: The projection of the diaphragm along the vertical direction is located within the projection range of the first magnetic attraction member along the vertical direction; And / or, a projection of the diaphragm along the vertical direction is located within a projection range of the second magnetic attraction component along the vertical direction.

8. The pressure monitor according to claim 2, characterized in that: The second magnetic attraction member is an iron ring buried in the pressure bag.

9. The pressure monitor according to claim 2, characterized in that: The pressure sensor includes a first body and a second body, the second body is sleeved on the outside of the first body, the first body is provided with a gold-plated film surface, an electromagnetic coil is arranged around the outer periphery of the first body, the first body and the electromagnetic coil form the electromagnet; the electromagnetic coil is located between the first body and the second body.

10. A blood purification device, characterized in that: It comprises a device body and a pressure monitor as described in any one of claims 1 to 9, wherein the pressure monitor is arranged on the device body.

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