Pipeline pressure adjusting device, blood pump testing mechanism and medical equipment
By using a pipeline pressure adjustment device combined with an inflatable balloon and an air pump, the problem of time-consuming, laborious and inaccurate manual adjustment in the existing technology is solved, and precise adjustment and stability of the negative pressure value in the pipeline are achieved.
Patent Information
- Application Number
- CN202421092961.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-20
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-05-20
AI Technical Summary
In the prior art, the pipeline pressure adjustment tool needs to be manually operated, which is time-consuming and labor-intensive, and is not accurate in adjustment, resulting in data errors and low testing efficiency.
Using a combination of an inflatable balloon and an air pump, the air pump adjusts the air pressure in the inflated balloon and squeezes the pipeline to form a negative pressure state, thereby achieving precise adjustment of the negative pressure value in the pipeline.
No manual operation is required, which improves operation convenience and adjustment efficiency, achieves precise adjustment of the negative pressure value in the pipeline, and ensures the stability of the negative pressure value.
Smart Images
Figure CN222377285U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of medical equipment, and in particular to a pipeline pressure regulating device, a blood pump testing mechanism and medical equipment. Background Art
[0002] The continuous blood purification equipment is connected to the extracorporeal circulation circuit and filter, and uses the diffusion and / or filtration and / or adsorption of blood and dialysate across the semipermeable membrane to remove excess water from the patient's body and correct the solute imbalance in the blood. The continuous blood purification equipment is usually composed of a power pump, a pressure monitoring module, an air monitoring module, a blood leakage monitoring module, a heating monitoring module, an anticoagulation module, an operation display unit and a power control module. Among them, the power pump drives to maintain extracorporeal circulation and is one of the most critical components of the blood purification equipment. The power pump of the continuous blood purification equipment can be divided into blood pumps, liquid pumps, anticoagulation pumps, etc. according to their uses. The blood pump rotates to draw blood from the human body to the extracorporeal circulation circuit, and its flow accuracy plays an extremely important role in treatment.
[0003] The test of blood pump flow accuracy is divided into two states: the pipeline unregulated state and the pipeline regulated state. The pipeline regulated state is to pressurize the front end pipeline of the blood pump so that the pressure in the front end pipeline of the blood pump is in a negative pressure state, simulating the actual clinical state where blood is drawn from the human body to the extracorporeal circulation pipeline. The test is conducted in this state to ensure the normal operation of the blood pump during clinical use.
[0004] In the prior art, the pipeline pressure regulating tool is manually adjusted. The pipeline pressure regulating tool is provided with a rotating handle. When the rotating handle is rotated, the end moves and squeezes the pipeline. After the blood pump is running, the pipeline is in a negative pressure state. However, the operation process is time-consuming and laborious by manually rotating the handle to release it. Each adjustment requires personal experience to rotate the adjustment handle to maintain the pressure within the required pressure range. Each time the pressure is adjusted, the deformation of the pipeline is different, resulting in data errors. After the pressure is manually adjusted, the pipeline will be lowered. When the pipeline is lowered, the arterial pressure may change due to shaking and height difference, which may exceed the required range and need to be readjusted, greatly reducing the test efficiency.
[0005] Based on this, there is an urgent need for a pipeline pressure regulating device, a blood pump testing mechanism and medical equipment to solve the above-mentioned problems. Utility Model Content
[0006] Based on the above, the purpose of the utility model is to provide a pipeline pressure regulating device, a blood pump testing mechanism and a medical device, which do not require manual operation, improve the convenience of operation, and realize precise adjustment of the negative pressure value in the pipeline.
[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0008] In a first aspect, a pipeline pressure regulating device is provided, comprising:
[0009] An inflatable balloon, wherein the inflatable balloon is provided with a receiving hole, and the receiving hole is used for the pipeline to pass through;
[0010] An air pump, the inflatable balloon is provided with an air inlet and an air outlet, the air inlet is connected to the air supply end of the air pump, and the air outlet is connected to the air suction end of the air pump, and the air pump can supply air to the inflatable balloon so that the hole wall of the accommodating hole squeezes the pipeline.
[0011] As a preferred technical solution for a pipeline pressure regulating device, the pipeline pressure regulating device also includes a shell assembly, the shell assembly is provided with a accommodating cavity, the inflatable balloon is arranged in the accommodating cavity, and both ends of the shell assembly are respectively provided with fixing holes coaxial with the accommodating hole, and the pipeline is sequentially penetrated by one of the fixing holes, the accommodating hole and another of the fixing holes.
[0012] As a preferred technical solution for a pipeline pressure regulating device, the shell assembly includes a protective shell, the accommodating cavity is provided with an installation port, the protective shell is provided with an installation port, and the inflatable balloon can be installed in the accommodating cavity through the installation port.
[0013] As a preferred technical solution of a pipeline pressure regulating device, the shell assembly also includes an end cover, which is detachably connected to the protective shell and is used to seal the installation port.
[0014] As a preferred technical solution of a pipeline pressure regulating device, the end cover is connected to the protective shell by snap-fitting or by fasteners.
[0015] In a second aspect, a blood pump testing mechanism is provided, comprising a pipeline pressure regulating device as described in any of the above schemes.
[0016] As a preferred technical solution of a blood pump testing mechanism, the blood pump testing mechanism further includes a pipeline and a blood pump, wherein the pipeline passes through the accommodating hole and is connected to the suction end of the blood pump.
[0017] As a preferred technical solution of a blood pump testing mechanism, the blood pump testing mechanism also includes a pressure sensor, which is located between the blood pump and the pipeline pressure regulating device, and is used to detect the liquid pressure in the pipeline.
[0018] As a preferred technical solution of a blood pump testing mechanism, the blood pump testing mechanism also includes a controller, and the pressure sensor and the air pump are electrically connected to the controller.
[0019] In a third aspect, a medical device is provided, comprising the pipeline pressure regulating device described in any of the above schemes.
[0020] The beneficial effects of the utility model are:
[0021] The utility model provides a pipeline pressure regulating device, a blood pump testing mechanism and a medical device. When working, the pipeline is passed through the receiving hole of the inflatable balloon, and the air pump supplies air into the inflatable balloon. The air pressure inside the inflatable balloon is increased by the air pump, and the volume of the inflatable balloon is increased, so that the hole wall of the receiving hole squeezes the pipeline, so that the pipeline forms a negative pressure state. When the utility model adjusts the negative pressure state of the pipeline through the air pump, no manual operation is required, which improves the convenience of operation and the adjustment efficiency; by adjusting the size of the air pressure in the inflatable balloon, the squeezing force of the hole wall of the receiving hole on the pipeline is adjusted, and the negative pressure value in the pipeline is accurately adjusted, and the adjustment accuracy is improved; furthermore, the pipeline is squeezed by the pipeline pressure regulating device, and after the adjustment is completed, there is no need to move the pipeline again, so as to ensure the stability of the negative pressure value in the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.
[0023] Figure 1 It is a structural schematic diagram of a pipeline pressure regulating device provided in Embodiment 1 of the present utility model;
[0024] Figure 2 It is a cross-sectional view of the pipeline pressure regulating device provided in the first embodiment of the utility model;
[0025] Figure 3 This is a schematic diagram of the structure of the pipeline being squeezed provided by the first embodiment of the utility model;
[0026] Figure 4 It is a structural schematic diagram of a blood pump testing mechanism provided in Embodiment 2 of the present utility model.
[0027] The following are marked in the figure:
[0028] 1. Pipeline pressure regulating device; 2. Pipeline; 3. Blood pump; 4. Pressure sensor;
[0029] 11. Inflatable balloon; 111. Air inlet; 112. Air outlet; 12. Air pump; 13. Shell assembly; 131. Protective shell; 132. End cover; 14. Air inlet pipe; 15. Air exhaust pipe. DETAILED DESCRIPTION
[0030] 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.
[0031] 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.
[0032] 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.
[0033] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships 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.
[0034] Embodiment 1
[0035] The test of blood pump flow accuracy is divided into the pipeline unregulated state and pipeline regulated state, wherein the pipeline regulated state is to pressurize the front end pipeline of the blood pump so that the pressure in the front end pipeline of the blood pump is in a negative pressure state, simulating the clinical real state of blood being drawn from the human body to the extracorporeal circulation pipeline. In this state, the test is conducted to ensure that the blood pump works normally during clinical use. In the prior art, the pipeline pressure regulating tool is manually adjusted, and the pipeline pressure regulating tool is provided with a rotating handle. When the rotating handle is rotated, the end moves and squeezes the pipeline. After the blood pump is running, the pipeline is in a negative pressure state. However, the release of the manual rotating handle is laborious and the operation process is laborious. Each adjustment requires personal experience to rotate the adjusting handle to maintain the pressure within the required pressure range. Each time the pressure is adjusted, the deformation of the pipeline is different, resulting in data errors, and after the pressure is manually adjusted, the pipeline will be put down. However, the arterial pressure may change due to shaking and height difference when the pipeline is put down, which may exceed the required range and need to be readjusted, greatly reducing the test efficiency.
[0036] To solve the above problems, Figure 1-Figure 3 As shown, this embodiment provides a pipeline pressure regulating device 1, which includes an inflatable balloon 11 and an air pump 12. The inflatable balloon 11 is provided with a receiving hole, and the receiving hole is used for the pipeline 2 to pass through; the inflatable balloon 11 is provided with an air inlet 111 and an air outlet 112, the air inlet 111 is connected to the air supply end of the air pump 12, and the air outlet 112 is connected to the air extraction end of the air pump 12, and the air pump 12 can supply air to the inflatable balloon 11 so that the hole wall of the receiving hole squeezes the pipeline 2. In this embodiment, the air inlet 111 is connected to the air supply end of the air pump 12 through the air inlet pipe 14, and the air outlet 112 is connected to the air extraction end of the air pump 12 through the air extraction pipe 15. The air pump 12 is a prior art, and its specific structure and principle are not repeated here.
[0037] During operation, the pipeline 2 is passed through the receiving hole of the inflatable balloon 11, and the air pump 12 supplies air into the inflatable balloon 11. The air pump 12 increases the air pressure inside the inflatable balloon 11, and the volume of the inflatable balloon 11 increases, so that the hole wall of the receiving hole squeezes the pipeline 2, so that the pipeline 2 forms a negative pressure state. In this embodiment, when the negative pressure state of the pipeline 2 is adjusted by the air pump 12, no manual operation is required, which improves the convenience of operation and the adjustment efficiency; by adjusting the size of the air pressure in the inflatable balloon 11, and then adjusting the squeezing force of the hole wall of the receiving hole on the pipeline 2, the negative pressure value in the pipeline 2 is accurately adjusted, and the adjustment accuracy is improved; furthermore, the pipeline 2 is squeezed by the pipeline pressure regulating device 1, and after the adjustment is completed, there is no need to move the pipeline 2 again, so as to ensure that the negative pressure value in the pipeline 2 is stable.
[0038] In order to prevent the inflatable balloon 11 from expanding infinitely, preferably, the pipeline pressure regulating device 1 also includes a shell assembly 13, the shell assembly 13 is provided with a receiving cavity, the inflatable balloon 11 is arranged in the receiving cavity, and the two ends of the shell assembly 13 are respectively provided with fixing holes coaxial with the receiving hole, and the pipeline 2 is sequentially penetrated by a fixing hole, a receiving hole and another fixing hole. On the one hand, the shell assembly 13 can protect the inflatable balloon 11; on the other hand, after the inflatable balloon 11 is inflated, the side wall of the receiving cavity can limit the inflatable balloon 11 from continuing to expand outward, so that the pipeline 2 can be better squeezed by the hole wall of the receiving hole, thereby increasing the squeezing force on the pipeline 2. In this embodiment, the inflatable balloon 11 is formed into a cylindrical shape under the wrapping of the receiving cavity, and the pipeline 2 is inserted into the receiving hole. The pipeline 2 is in direct contact with the inner wall of the receiving hole, and the pipeline 2 is deformed by the force of the side wall of the receiving hole.
[0039] Further preferably, the shell assembly 13 includes a protective shell 131 , and the protective shell 131 is provided with an installation opening, and the inflatable balloon 11 can be installed in the accommodating cavity through the installation opening, which is easy to operate.
[0040] The shell assembly 13 also includes an end cover 132, which is detachably connected to the protective shell 131, and the end cover 132 is used to block the installation port. During assembly, the end cover 132 is first disassembled, and then the inflated balloon 11 is installed in the accommodating cavity through the installation port, and finally the end cover 132 is connected to the protective shell 131 to block the installation port. Specifically, the end cover 132 is snap-fitted or connected to the protective shell 131 through a fastener, so that the end cover 132 is detachably connected to the protective shell 131. Specifically, when the end cover 132 is connected to the protective shell 131 through a fastener, the fastener can be a screw, the end cover 132 is provided with a through hole, and the protective shell 131 is provided with a threaded hole. The fasteners, through holes and threaded holes are multiple and one-to-one corresponding. The screw is passed through the through hole and threadedly connected to the threaded hole to achieve the detachable connection of the end cover 132 to the protective shell 131, and the connection is strong and stable.
[0041] Embodiment 2
[0042] like Figure 1 and Figure 4 As shown, this embodiment provides a blood pump testing mechanism, including the pipeline pressure regulating device 1 described in the first embodiment. The blood pump testing mechanism also includes a pipeline 2 and a blood pump 3, and the pipeline 2 is passed through the receiving hole and connected to the suction end of the blood pump 3. During the test of the blood pump 3, the pipeline pressure regulating device 1 squeezes the pipeline 2 through the inflated balloon 11 to simulate the working state of the blood pump 3 in actual application, that is, to simulate the arterial pressure value required in the pipeline 2 to measure the performance index of the blood pump 3. Among them, the blood pump 3 can be the blood pump 3 of a continuous blood purification device.
[0043] Preferably, the blood pump testing mechanism also includes a pressure sensor 4, which is located between the blood pump 3 and the pipeline pressure regulating device 1, and is used to detect the liquid pressure in the pipeline 2. The simulated arterial pressure in the pipeline 2 is obtained through the pressure sensor 4 to improve the test accuracy.
[0044] Further preferably, the blood pump test mechanism further includes a controller, and the pressure sensor 4 and the air pump 12 are electrically connected to the controller. The above structure forms a dynamic and closed-loop operation system, and the controller can continuously receive the arterial pressure detected by the pressure sensor 4, and then continuously adjust the operation state of the air pump 12 until the arterial pressure received by the controller is within the qualified range, and the air pump 12 stops working and maintains the current operation.
[0045] Preferably, the blood pump test mechanism further comprises an input device, which is electrically connected to the controller. The input device is manually input with the suction speed of the blood pump 3 to be tested and the specification of the pipeline 2, and the controller processes the input parameters, pressure level and other parameters through an algorithm, and controls the air pump 12 to operate with appropriate power in combination with the arterial pressure value of the pressure sensor 4.
[0046] Preferably, the blood pump testing mechanism further comprises a measuring device, which detects the quantitative deformation degree of the diameter of the pipeline 2 and converts it into a corresponding pressure level and transmits it to the controller.
[0047] In this embodiment, the speed of the blood pump 3 of the blood pump test mechanism, the specifications of the pipeline 2, and the pressure level will affect the simulated arterial pressure. Therefore, after the controller processes the input parameters and pressure level through the algorithm, it combines the simulated arterial pressure value to control the air pump 12 to operate with appropriate power. The air pump 12 causes the pipeline 2 to deform, and finally changes the simulated arterial pressure. This is a dynamic and closed-loop operation system. The controller continuously adjusts the operation state of the air pump 12 by continuously receiving the feedback of the arterial pressure and the pressure level transmitted by the measuring device, until the arterial pressure received by the controller is within the qualified range, the adjustment control stops, and the current operation is maintained. For example, the arterial pressure received by the controller is -100mmHg, which is lower than the required requirement of -250mmHg to -150mmHg. It is judged that the pressure level detected by the measuring device is increased, the power of the air pump 12 is increased by a level requirement, the pipeline pressure regulating device 1 increases the degree of compression of the pipeline 2, the deformation of the pipeline 2 changes in proportion, the arterial pressure increases, and it is close to the required range. If the arterial pressure still does not reach the required range, the system is adjusted again until the arterial pressure meets the requirements.
[0048] It should be noted that the controller receives signals from the input device, the pressure sensor 4 and the measuring device, and the controller controls the pipeline pressure regulating device 1 to work, which are mature technologies in the prior art. The specific working principle, the model of the controller and the specific wired or wireless connection method with the air pump 12 and the pressure sensor 4 will not be repeated here.
[0049] This embodiment also provides the working principle of the blood pump testing mechanism. The air pump 12 inflates and exhausts air to the inflatable balloon 11 through the air inlet 111 and the air outlet 112 to control the shape of the inflatable balloon 11. When inflated, the inflatable balloon 11 expands, generating an extrusion force acting on the pipeline 2, causing the pipeline 2 to deform. When the arterial pressure is lower than the required range, the air pump 12 inflates, the inflatable balloon 11 expands, the extrusion force on the pipeline 2 increases, and the arterial pressure increases; when the arterial pressure is higher than the required range, the air pump 12 exhausts air, the inflatable balloon 11 recovers, the extrusion force on the pipeline 2 decreases, and the arterial pressure decreases. The expansion degree of the inflatable balloon 11 is controlled by the controller by controlling the amount of air pumped and exhausted by the air pump 12, and the degree of deformation of the pipeline 2 can be accurately controlled.
[0050] Embodiment 3
[0051] This embodiment provides a medical device, including the pipeline pressure regulating device 1 described in Embodiment 1. The medical device may be a medical device such as a continuous blood purification device and a dialysis machine that requires regulating the pressure of the pipeline 2.
[0052] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention is described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims
1. A pipeline pressure regulating device, characterized in that: include: an inflatable balloon (11), wherein the inflatable balloon (11) is provided with a receiving hole, wherein the receiving hole is used for allowing the pipeline (2) to pass through; An air pump (12), the inflatable balloon (11) is provided with an air inlet (111) and an air outlet (112), the air inlet (111) is connected to the air supply end of the air pump (12), and the air outlet (112) is connected to the air suction end of the air pump (12), and the air pump (12) is capable of supplying air to the inflatable balloon (11) so that the hole wall of the containing hole squeezes the pipeline (2).
2. The pipeline pressure regulating device according to claim 1, characterized in that: The pipeline pressure regulating device also includes a shell component (13), the shell component (13) is provided with a accommodating cavity, the inflatable balloon (11) is arranged in the accommodating cavity, and the two ends of the shell component (13) are respectively provided with fixing holes coaxial with the accommodating hole, and the pipeline (2) is sequentially penetrated by one of the fixing holes, the accommodating hole and another of the fixing holes.
3. The pipeline pressure regulating device according to claim 2, characterized in that: The housing assembly (13) comprises a protective shell (131), the protective shell (131) being provided with a mounting opening, and the inflatable balloon (11) can be mounted in the accommodating cavity through the mounting opening.
4. The pipeline pressure regulating device according to claim 3, characterized in that: The housing assembly (13) further comprises an end cover (132), wherein the end cover (132) is detachably connected to the protective shell (131), and the end cover (132) is used to seal the installation opening.
5. The pipeline pressure regulating device according to claim 4, characterized in that: The end cover (132) is snap-fitted or connected to the protective shell (131) via a fastener.
6. A blood pump testing mechanism, characterized in that: It comprises a pipeline pressure regulating device as described in any one of claims 1 to 5.
7. The blood pump testing mechanism according to claim 6, characterized in that: The blood pump testing mechanism further comprises a pipeline (2) and a blood pump (3), wherein the pipeline (2) is passed through the accommodating hole and connected to the suction end of the blood pump (3).
8. The blood pump testing mechanism according to claim 7, characterized in that: The blood pump testing mechanism further comprises a pressure sensor (4), wherein the pressure sensor (4) is located between the blood pump (3) and the pipeline pressure regulating device, and the pressure sensor (4) is used to detect the liquid pressure in the pipeline (2).
9. The blood pump testing mechanism according to claim 8, characterized in that: The blood pump testing mechanism also includes a controller, and the pressure sensor (4) and the air pump (12) are both electrically connected to the controller.
10. A medical device, characterized in that: It comprises a pipeline pressure regulating device as described in any one of claims 1 to 5.