A flow meter capable of adjusting flow rate
By designing an adjustable flow meter including a hinged base, a closure and a telescopic adjustment device, the problem of existing flow meters being unable to independently adjust flow and limited use range is solved, and the effect of monitoring blood flow at any location and reducing costs is achieved.
Patent Information
- Application Number
- CN202420319537.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-20
- Publication Date
- 2025-04-08
- Estimated Expiration
- 2034-02-20
AI Technical Summary
Existing flowmeters used to detect blood flow in drainage tubes cannot independently regulate the flow rate, and their usage range is limited by wired connections, so they cannot be monitored anywhere in the drainage tube, resulting in high costs.
An adjustable flow meter including a hinged base and a closure is designed. By providing a recessed groove and a telescopic adjustment device on the base, the blood flow in the drainage tube can be independently adjusted, and the flow data can be monitored and displayed in real time through a microprocessing chip and sensor.
It realizes the function of independently adjusting the blood flow in the drainage tube without connecting to the ECMO host, which facilitates monitoring at any location in the drainage tube, reduces costs, and provides real-time flow data display.
Smart Images
Figure CN222723405U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of flow meters, in particular to a flow meter capable of adjusting flow. Background Art
[0002] ECMO (Extra-corporeal Membrane Oxygenation) is a medical emergency device, which needs to use a flowmeter to monitor blood flow in real time when in use, so that medical staff can understand the patient's blood flow in time. The flowmeter used in the existing clinical practice needs to be connected to the ECMO host, and the rotation speed of the pump head in the host is adjusted through the control panel of the ECMO host to adjust the blood flow. It can be seen that the existing flowmeter for detecting the blood flow in the drainage tube can only collect blood flow data and cannot independently adjust the flow. In addition, the connection between the flowmeter used to detect the blood flow in the drainage tube and the ECMO host is a wired connection, and the scope of use is affected by the length of the connection line, and it cannot be placed at any position in the drainage pipeline for monitoring; because the flow data detected by the above flowmeter can only be displayed on the control panel of the ECMO host, the above flowmeter must be used with the ECMO host. If it is necessary to monitor the blood flow in the branch pipeline of the drainage tube at the same time, two ECMO hosts are required, and the ECMO host is expensive and the cost is too high. Utility Model Content
[0003] One of the main purposes of the utility model is to provide a flow meter with adjustable flow, which can independently adjust the flow of blood in the drainage tube without being connected to the ECMO host.
[0004] In order to achieve the above-mentioned purpose of the utility model, the utility model provides a flow meter with adjustable flow, including a base and a closing cover which are hinged to each other, the base is provided with a first working surface, the closing cover is used to cover the first working surface and can be locked on the base by a locking structure, in the covered state, the surface of the closing cover facing the first working surface is the second working surface, the first working surface and / or the second working surface are provided with an accommodating groove, the extension direction of the accommodating groove is parallel to the rotation axis of the closing cover relative to the base, the inner diameter of the accommodating groove is adapted to the outer diameter of a drainage tube for draining blood; a through hole communicating with the accommodating groove is provided on the surface of the closing cover facing away from the second working surface, the closing cover is also provided with a telescopic adjustment device, the telescopic end of the telescopic adjustment device can be telescoped along the axial direction of the through hole to pass through the through hole to squeeze the drainage tube.
[0005] Furthermore, the telescopic adjustment device includes a threaded adjustment rod, and the threaded adjustment rod is threadedly connected to the through hole.
[0006] Furthermore, the accommodating groove is a semi-cylindrical groove opened on the first working surface and passing through two opposite sides of the first working surface.
[0007] Furthermore, the accommodating groove is a semi-cylindrical groove opened on the second working surface and passing through two opposite sides of the second working surface.
[0008] Furthermore, the groove depth of the semi-cylindrical groove is equal to the outer diameter of the drainage tube.
[0009] Furthermore, the accommodating groove includes a first semi-cylindrical groove and a second semi-cylindrical groove, the first semi-cylindrical groove is opened on the first working surface and passes through the opposite sides of the first working surface, and the second semi-cylindrical groove is opened on the second working surface and passes through the opposite sides of the second working surface; in the covered state, the drainage tube is clamped by the first semi-cylindrical groove and the second semi-cylindrical groove.
[0010] Furthermore, a battery and a microprocessor chip electrically connected to the battery are also provided on the base, and a display screen controlled by the microprocessor chip is provided on the surface of the closing cover facing away from the second working surface; the tube section of the telescopic end of the telescopic adjustment device that contacts the drainage tube is the detection tube section on the drainage tube, and a first mounting groove and a second mounting groove are provided in the accommodating groove, a photoelectric diameter measurement sensor controlled by the microprocessor chip is installed in the first mounting groove for detecting the diameter of the detection tube section, and a photoelectric current velocity sensor controlled by the microprocessor chip is installed in the second mounting groove for detecting the blood flow velocity in the detection tube section; the microprocessor chip processes and analyzes the information fed back by the photoelectric diameter measurement sensor and the photoelectric current velocity sensor, and displays the flow rate of the output fluid on the display screen.
[0011] Furthermore, a third installation groove is provided in the accommodating groove, and a heart rate sensor controlled by the microprocessor chip is installed in the third installation groove. The heart rate sensor is used to detect the blood oxygen saturation in the drainage tube, and the blood oxygen saturation is transmitted to the display screen through the microprocessor chip.
[0012] Compared with the prior art, the flow meter with adjustable flow rate of the utility model has the following beneficial effects:
[0013] When the flow meter of the utility model is in use, the drainage tube for draining blood is placed in the accommodating groove on the first working surface of the base, and then the cover is rotated to cover the first working surface, and the cover is locked to the base through the locking structure, so that the flow meter is clamped and fixed on the drainage tube; when the blood flow in the drainage tube needs to be adjusted, the telescopic end of the telescopic adjustment device is adjusted to be telescopic along the axial direction of the through hole, so that the telescopic end of the telescopic adjustment device can pass through the through hole to squeeze the drainage tube, thereby achieving the effect of independently adjusting the blood flow in the drainage tube, without being connected to the ECMO host. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 This is a schematic diagram of the structure of a flow meter according to Embodiment 1 of the present utility model;
[0015] Figure 2 This is a top view of a base according to an embodiment of the utility model;
[0016] Figure 3 This is a side view of a flow meter according to Embodiment 1 of the present utility model;
[0017] Figure 4 This is a schematic diagram of the structure of the first embodiment of the utility model in a closed state of the cover and the base;
[0018] Figure 5 This is a schematic diagram of the structure of a flow meter according to the second embodiment of the present utility model;
[0019] Figure 6 This is a schematic diagram of the structure of the second embodiment of the utility model when the cover and the base are in a closed state;
[0020] Figure 7 This is a schematic diagram of the structure of the third embodiment of the utility model when the cover and the base are in a closed state.
[0021] Numbers in the attached drawings:
[0022] 10. Base; 101. First working surface; 20. Closing cover; 201. Second working surface; 202. Display screen; 203. Through hole; 204. Threaded adjustment rod; 21. Locking structure; 30. Accommodating groove; 301. First mounting groove; 302. Second mounting groove; 303. Third mounting groove; 31. First semi-cylindrical groove; 32. Second semi-cylindrical groove; 40. First accommodating groove; 41. Second accommodating groove. DETAILED DESCRIPTION
[0023] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.
[0024] In the description of the present invention, it should be understood that the terms "length", "up", "down", "front", "back", "top", "bottom", etc. indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0025] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", and "set" 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, 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 utility model can be understood according to specific circumstances.
[0026] 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.
[0027] Embodiment 1:
[0028] Please refer to Figure 1-Figure 4The utility model provides a flow meter with adjustable flow, comprising a base 10 and a cover 20 which are hinged to each other, and the cover 20 is hinged to the base 10 through a hinge. The base 10 is provided with a first working surface 101, and the cover 20 is used to cover the first working surface 101 and can be locked on the base 10 through a locking structure 21. The locking structure 21 here can use an existing buckle structure to lock the cover 20 on the base 10. In the closed state, the surface of the closing cover 20 facing the first working surface 101 is the second working surface 201, and an accommodating groove 30 is provided on the first working surface 101 and / or the second working surface 201, and the extension direction of the accommodating groove 30 is parallel to the rotation axis of the closing cover 20 relative to the base 10, so that the drainage tube for draining blood can pass through the opposite ends of the accommodating groove 30; the inner diameter of the accommodating groove 30 is adapted to the outer diameter of the drainage tube (not shown) for draining blood; in addition, a through hole communicating with the accommodating groove 30 is provided on the surface of the closing cover 20 facing away from the second working surface 201, and a telescopic adjustment device is also provided on the closing cover 20, and the telescopic end of the telescopic adjustment device can be telescoped along the axial direction of the through hole to pass through the through hole to extrude the drainage tube.
[0029] It can be understood that when the flow meter of the utility model is in use, the drainage tube for draining blood is placed in the accommodating groove 30 of the first working surface 101, and then the closing cover 20 is rotated to cover the first working surface 101, and the closing cover 20 is locked on the base 10 by the locking structure 21, so that the flow meter is clamped and fixed on the drainage tube; when the blood flow in the drainage tube needs to be adjusted, the telescopic end of the telescopic adjustment device is adjusted to be telescopic along the axial direction of the through hole, so that the telescopic end of the telescopic adjustment device can pass through the through hole to squeeze the drainage tube, thereby achieving the effect of independently adjusting the blood flow in the drainage tube without being connected to the ECMO host.
[0030] It should be noted that the inner diameter of the accommodating groove 30 is reasonably changed according to the drainage tubes of different specifications and outer diameters; in addition, the number of accommodating grooves 30 can be set to multiple, and correspondingly, multiple telescopic adjustment devices are also provided, and the number of telescopic adjustment devices corresponds to the number of accommodating grooves 30. Figure 3 Only one telescopic adjustment device is shown. The inner diameters of the plurality of accommodating grooves 30 may be the same or different, which is not limited here; when the inner diameters of the plurality of accommodating grooves 30 are different, the flow meter of the utility model can be applied to drainage tubes with different outer diameters.
[0031] In one embodiment, the telescopic adjustment device includes a threaded adjustment rod 204, which is threadedly connected to the through hole 203, so that the threaded adjustment rod 204 can be driven to extend and retract along the axial direction of the through hole 203 by manually rotating the threaded adjustment rod 204 to pass through the through hole 203 to squeeze the drainage tube (not shown) located in the accommodating groove 30, thereby achieving the purpose of adjusting the flow rate. Of course, in other embodiments, the telescopic adjustment device can also use an electric push rod or an adjustment cylinder, which can also achieve the purpose of flow rate. Therefore, the telescopic adjustment device is not limited here. For those skilled in the art, by reasonably changing the structure of the telescopic adjustment device, it should also fall within the protection scope of the utility model.
[0032] In one embodiment, the receiving groove 30 is configured as a semi-cylindrical groove opened on the first working surface 101. The structure of the semi-cylindrical groove is as follows: Figure 1 or Figure 3 As shown; of course, the semi-cylindrical groove passes through the opposite sides of the first working surface 101, that is, the semi-cylindrical groove passes through the opposite sides of the base 10. It can be understood that the opposite ends of the drainage tube located in the semi-cylindrical groove can be respectively passed through the opposite ends of the semi-cylindrical groove. On this basis, the cover 20 is rotated to cover the first working surface 101, and the cover 20 is locked on the base 10 through the locking structure 21, so that the flow meter can be clamped and fixed on the drainage tube.
[0033] In one embodiment, the depth of the semi-cylindrical groove is equal to the outer diameter of the drainage tube, so that when the closing cover 20 covers the first working surface 101 on the base 10 and is locked on the base 10, the closing cover 20 can be prevented from pressing on the drainage tube, thereby avoiding affecting the flow of blood in the drainage tube.
[0034] In one embodiment, the base 10 is also provided with a battery (not shown) and a microprocessor chip (not shown); wherein, a first receiving groove 40 is provided on the first working surface 101 of the base 10, and the battery is installed in the first receiving groove 40; a second receiving groove 41 is provided on the first working surface 101 of the base 10, and the microprocessor chip is installed in the second receiving groove 41, so that when the cover 20 is covered on the first working surface 101, the cover 20 can protect the battery and the microprocessor chip. Of course, the microprocessor chip is electrically connected to the battery; a display screen 202 controlled by the microprocessor chip is provided on the surface of the cover 20 facing away from the second working surface 201, and of course, the display screen 202 is also powered by the battery, and the microprocessor chip can also transmit the battery power to the display screen 202 for display. Among them, the telescopic end of the telescopic adjustment device can contact the tube section of the drainage tube, which is the detection tube section on the drainage tube. The accommodating groove 30 is provided with a first installation groove 301 and a second installation groove 302. The first installation groove 301 is provided with a photoelectric diameter measurement sensor (not shown) controlled by a microprocessor chip, and the photoelectric diameter measurement sensor is used to detect the diameter of the detection tube section; the second installation groove 302 is provided with a photoelectric current velocity sensor (not shown), and the photoelectric current velocity sensor is used to detect the blood flow velocity in the detection tube section.
[0035] Of course, the photoelectric diameter measurement sensor and the photoelectric current velocity sensor are both controlled by the microprocessor chip, so that the detection results of the photoelectric current velocity sensor and the photoelectric current velocity sensor can be transmitted to the microprocessor chip, so that the microprocessor chip can process and analyze the information fed back by the photoelectric diameter measurement sensor and the photoelectric current velocity sensor to output the flow rate of the fluid and display it on the display screen 202. Specifically, according to the calculation formula of flow rate and flow rate: Q = V × S; wherein Q is the flow rate, S is the cross-sectional area, and v is the liquid flow velocity, the photoelectric diameter measurement sensor detects the diameter of the drainage tube detection tube segment to obtain the cross-sectional area S of the blood flowing through the detection tube segment, and the photoelectric current velocity sensor detects the flow velocity of the blood in the drainage tube detection tube segment to obtain the flow velocity v. On this basis, the microprocessor chip can analyze the information fed back by the photoelectric diameter measurement sensor and the photoelectric current velocity sensor to obtain the flow value, thereby transmitting and displaying it on the display screen 202, so that medical staff can understand the blood flow rate in real time. In this way, the flow meter of the utility model can be clamped at any position of the drainage pipeline for flow monitoring, which is convenient to use. It should be noted that the photocurrent velocity sensor and the photocurrent velocity sensor belong to the prior art, and their working principles are not described here in detail.
[0036] In one embodiment, a third installation groove 303 is further provided in the accommodating groove 30, and a heart rate sensor (not shown) controlled by a microprocessor chip is installed in the third installation groove 303. The heart rate sensor is used to detect the blood oxygen saturation in the drainage tube, and the blood oxygen saturation is transmitted to the display screen 202 through the microprocessor chip. Of course, the heart rate sensor also belongs to the prior art, and the principle of detecting blood oxygen saturation is not described here.
[0037] In summary, the flow meter of the present invention can be clamped at any position of the drainage pipeline for flow monitoring, which is simple, practical and convenient for clinical use; and the display screen 202 of the flow meter of the present invention can display the battery power, blood oxygen saturation and blood flow, which is convenient to use.
[0038] Embodiment 2:
[0039] The difference between this embodiment and the first embodiment is that the location of the accommodating groove 30 is different.
[0040] In this embodiment, if Figure 5 and Figure 6 As shown, the accommodating groove 30 is constructed as a semi-cylindrical groove opened on the second working surface 201. Of course, the semi-cylindrical groove runs through the opposite sides of the second working surface 201, that is, the semi-cylindrical groove of this embodiment runs through the opposite sides of the closing cover 20. It can be understood that the opposite ends of the drainage tube located in the semi-cylindrical groove can be respectively passed through the opposite ends of the semi-cylindrical groove. On this basis, the closing cover 20 is rotated to cover the first working surface 101, and the closing cover 20 is locked on the base 10 through the locking structure 21, so that the flow meter can be clamped and fixed on the drainage tube.
[0041] Embodiment three:
[0042] The difference between this embodiment and the above-mentioned embodiment is that the structure of the accommodating groove 30 is different.
[0043] In this embodiment, if Figure 7 As shown, the accommodating groove 30 includes a first semi-cylindrical groove 31 and a second semi-cylindrical groove 32. The first semi-cylindrical groove 31 is opened on the first working surface 101 and passes through the opposite sides of the first working surface 101, and the second semi-cylindrical groove 32 is opened on the second working surface 201 and passes through the opposite sides of the second working surface 201. In the closed state, the drainage tube is clamped by the first semi-cylindrical groove 31 and the second semi-cylindrical groove 32. When the locking structure 21 locks the closed cover 20 on the base 10, the flow meter can be clamped and fixed on the drainage tube.
[0044] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.
Claims
1. A flow meter with adjustable flow, characterized in that: It comprises a base and a closing cover which are hinged to each other, wherein the base is provided with a first working surface, the closing cover is used for covering the first working surface and can be locked on the base by a locking structure, and in the closed state, the surface of the closing cover facing the first working surface is the second working surface, and an accommodating groove is provided on the first working surface and / or the second working surface, and the extending direction of the accommodating groove is parallel to the rotation axis of the closing cover relative to the base, and the inner diameter of the accommodating groove is adapted to the outer diameter of a drainage tube for draining blood; a through hole which communicates with the accommodating groove is provided on the surface of the closing cover which is away from the second working surface, and a telescopic adjustment device is also provided on the closing cover, and the telescopic end of the telescopic adjustment device can be telescoped through the through hole along the axial direction of the through hole to extrude the drainage tube.
2. The flow meter with adjustable flow rate according to claim 1, characterized in that: The telescopic adjustment device comprises a threaded adjustment rod, and the threaded adjustment rod is threadedly connected to the through hole.
3. The flow meter with adjustable flow rate according to claim 1, characterized in that: The accommodating groove is a semi-cylindrical groove opened on the first working surface and passing through two opposite sides of the first working surface.
4. The flow meter with adjustable flow rate according to claim 1, characterized in that: The accommodating groove is a semi-cylindrical groove which is opened on the second working surface and passes through two opposite sides of the second working surface.
5. The flow meter with adjustable flow rate according to claim 3 or 4, characterized in that: The groove depth of the semi-cylindrical groove is equal to the outer diameter of the drainage tube.
6. The flow meter with adjustable flow rate according to claim 1, characterized in that: The accommodating groove includes a first semi-cylindrical groove and a second semi-cylindrical groove, the first semi-cylindrical groove is opened on the first working surface and passes through the opposite sides of the first working surface, and the second semi-cylindrical groove is opened on the second working surface and passes through the opposite sides of the second working surface; in the covered state, the drainage tube is clamped by the first semi-cylindrical groove and the second semi-cylindrical groove.
7. The flow meter with adjustable flow rate according to claim 1, characterized in that: A battery and a microprocessor chip electrically connected to the battery are also provided on the base, and a display screen controlled by the microprocessor chip is provided on the surface of the closing cover facing away from the second working surface; the tube section of the telescopic end of the telescopic adjustment device that contacts the drainage tube is the detection tube section on the drainage tube, and a first mounting groove and a second mounting groove are provided in the accommodating groove, a photoelectric diameter measurement sensor controlled by the microprocessor chip is installed in the first mounting groove for detecting the diameter of the detection tube section, and a photoelectric current velocity sensor controlled by the microprocessor chip is installed in the second mounting groove for detecting the blood flow velocity in the detection tube section; the microprocessor chip processes and analyzes the information fed back by the photoelectric diameter measurement sensor and the photoelectric current velocity sensor, and displays the flow rate of the output fluid on the display screen.
8. The flow meter with adjustable flow rate according to claim 7, characterized in that: A third installation groove is also provided in the accommodating groove, in which a heart rate sensor controlled by the microprocessor chip is installed. The heart rate sensor is used to detect the blood oxygen saturation in the drainage tube, and the blood oxygen saturation is transmitted to the display screen through the microprocessor chip.