A tapping device for precise measurement of a flow

Abstract

The application discloses a kind of for drainage liquid accurate measurement interface device, belong to medical instrument technical field.The interface device includes outer cup body, inner core cup, magnetic valve core and magnetic control driving piece;The inner core cup is fixed in the inside of outer cup body, and its bottom is equipped with liquid outlet;The magnetic valve core includes slide bar, first magnet and sealing element, is arranged at the bottom of inner core cup, for blocking or opening the liquid outlet;The magnetic control driving piece includes circular ring mounting piece and second magnet, is arranged in the annular groove of the bottom of outer cup body.The device is accurately controlled by magnetic control mode the on-off of inner core cup bottom liquid outlet, utilizes communicating vessel principle and batch liquid in inner core cup is transferred to outer cup body, both ensure the high-precision reading of small amount of drainage liquid, also realize the cumulative measurement of large amount of drainage liquid, and overall gravity is low, place stable, effectively avoid sample pollution and reading deviation, improve the efficiency and accuracy of clinical drainage liquid measurement.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a receiving device for accurate measurement of drainage fluid. Background Technology

[0002] Clinical drainage fluid measurement is a crucial aspect of postoperative care, and its accuracy directly impacts the assessment of the patient's condition and the adjustment of treatment plans. Currently, commonly used clinical measurement tools have the following significant shortcomings: Small-capacity conical measuring cup: Suitable for scenarios with small drainage volumes (a few milliliters to even milliliters) after surgery for thyroid, breast, etc. The scale is fine, but the "thin at the bottom and thick at the top" conical structure results in a high center of gravity, a small base, and easy tipping, which can cause sample loss or contamination. In addition, the capacity is limited and cannot cope with sudden increases in drainage volume.

[0003] Large-capacity standard measuring cups: with a capacity of up to 2000ml, suitable for patients with large drainage volumes (300-500ml) such as those undergoing hip replacement surgery. However, they have large reading errors for small amounts of fluid and cannot meet the needs of precise measurements. Nurses need to frequently switch between two types of measuring cups when handling a large number of patients, which is inefficient and prone to errors.

[0004] Therefore, how to provide a new measuring cup design that balances accuracy, stability, and ease of operation has become a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] The purpose of this invention is to provide a receiving device for accurate measurement of drainage fluid, which aims to solve the technical problems of existing drainage fluid measurement tools that cannot simultaneously meet the needs of accurate measurement of small amounts and large-range measurement, have poor stability, and are cumbersome to operate.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A receiving device for accurate measurement of drainage fluid, comprising: The outer cup body is a hollow container with an open top, used to store drainage fluid; An inner core cup is fixed inside the outer cup body, and a liquid outlet is provided at the bottom of the inner core cup; A magnetic valve core is located at the bottom of the inner core cup and is used to block or open the liquid outlet. A magnetically controlled drive unit is disposed at the bottom of the outer cup body and is used to generate a magnetic field to drive the magnetic valve core to move relative to the inner core cup, thereby controlling the opening and closing of the liquid outlet.

[0007] Preferably, the magnetic valve core includes a slide rod, a first magnet, and a sealing element. Multiple slide rods are vertically arranged and evenly distributed around the inner core cup. The first magnet is slidably connected to the slide rod, and the sealing element is fixed to the first magnet. The sealing element is used to block or open the liquid outlet.

[0008] Preferably, the magnetically controlled drive component includes a circular ring mounting component and a second magnet. The second magnet is mounted on the circular ring mounting component, and multiple second magnets are provided and evenly distributed around the circumference of the circular ring mounting component.

[0009] Preferably, the bottom of the outer cup body is provided with an annular groove for placing the ring mounting component.

[0010] Preferably, a limiting head is provided at the top of the slide bar.

[0011] Preferably, a supporting positioning rib is provided between the inner wall of the outer cup body and the outer wall of the inner core cup.

[0012] Preferably, the inner core cup has high-precision graduation lines on its wall, and the minimum division value of the high-precision graduation lines is 1 ml.

[0013] Preferably, the outer wall of the outer cup body is provided with coarse graduation lines, and the minimum division value of the coarse graduation lines is 50ml or 100ml.

[0014] Compared with the prior art, the beneficial technical effects of the present invention are as follows: It can measure both small amounts of fluid accurately and large amounts of fluid: the high-precision scale on the inner cup (minimum division value 1ml) enables accurate reading of small amounts of drainage fluid; the liquid in the inner cup is discharged into the outer cup through the magnetic valve, and the cumulative measurement of large amounts of drainage fluid is achieved by using the principle of communicating vessels. One device can meet the measurement needs of drainage fluid from a few milliliters to several liters without the need to switch between multiple measuring cups.

[0015] Good structural stability and not easy to tip over: The outer cup adopts a one-piece straight wall or wide mouth structure with a large bottom area and low center of gravity. Combined with the annular groove structure at the bottom, it is stable and completely solves the problem of easy tipping of conical small measuring cups, avoiding sample loss and contamination risks.

[0016] Easy to operate and highly efficient in measurement: The opening and closing of the liquid outlet at the bottom of the inner core cup can be remotely controlled by the magnetic drive component at the bottom of the outer cup body, without the need to disassemble the device or directly contact the drainage liquid, making operation simple and hygienic; The interference fit or snap-fit ​​design between the circular mounting component and the annular groove facilitates assembly, disassembly and maintenance.

[0017] The measurement principle is scientific, resulting in small cumulative errors: Utilizing the principle of balance in communicating vessels, the volume of liquid discharged in a single instance is calculated by recording the difference in liquid level in the inner cup before and after each discharge. The total volume is obtained by summing these values, avoiding the errors caused by directly reading large-range coarse scales. It also eliminates reading deviations due to liquid residue.

[0018] The dual-scale design allows for flexible reading: the high-precision inner scale is suitable for fine readings, while the coarse scale on the outer cup is suitable for quick estimations. Operators can flexibly choose the reading method according to their actual needs. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] Figure 1 This is a schematic diagram of the receiving device for accurate measurement of drainage fluid according to the present invention; Figure 2 This is a perspective view of the outer cup body of the present invention; Figure 3 This is a schematic diagram showing the connection relationship between the first magnet and the sealing element in this invention; Figure 4 This is a schematic diagram of the magnetic drive component structure of the present invention.

[0021] Explanation of reference numerals in the attached drawings: 1. Outer cup body; 11. Annular groove; 2. Inner core cup; 21. Liquid outlet; 3. Magnetic valve core; 31. Slide rod; 32. First magnet; 33. Sealing element; 4. Magnetic control drive element; 41. Circular mounting element; 42. Second magnet; 5. Support positioning rib. Detailed Implementation

[0022] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0023] Please see Figures 1 to 4 The present invention provides a receiving device for accurate measurement of drainage fluid, which mainly consists of an outer cup body 1, an inner core cup 2, a magnetic valve core 3 and a magnetically controlled drive component 4.

[0024] The outer cup 1 is a hollow container with an open top, used to store drainage fluid. An annular groove 11 is provided at the bottom of the outer cup 1, which accommodates and fixes the magnetically controlled drive component 4, and also serves to prevent slippage and ensure stable placement. The inner wall of the outer cup 1 has coarse graduation lines to indicate the volume of large-volume drainage fluid.

[0025] The inner core cup 2 is fixed inside the outer cup body 1, and the two are positioned and fixed by supporting positioning ribs 5 to ensure coaxiality. The bottom of the inner core cup 2 is provided with a liquid outlet 21. The cup wall of the inner core cup 2 is provided with high-precision scale lines for accurate reading of micro-drainage fluid.

[0026] The magnetic valve core 3 is disposed at the bottom of the inner core cup 2 and is used to seal or open the liquid outlet 21. Specifically, the magnetic valve core 3 includes a slide rod 31, a first magnet 32, and a sealing element 33. Multiple slide rods 31 are vertically arranged and evenly distributed around the inner core cup 2, with a limiting head at the top to prevent the first magnet 32 ​​from dislodging. The first magnet 32 ​​is slidably connected to the slide rod 31, and the sealing element 33 is fixed to the first magnet 32. When the first magnet 32 ​​falls under the action of gravity or magnetic force, the sealing element 33 presses against the liquid outlet 21 to achieve a seal; when subjected to an upward magnetic force, the sealing element 33 disengages from the liquid outlet 21, and the liquid flows out.

[0027] The magnetically controlled drive component 4 is disposed at the bottom of the outer cup body 1 and is used to generate a magnetic field to drive the magnetic valve core 3 to actuate. The magnetically controlled drive component 4 includes a circular mounting component 41 and a second magnet 42. Multiple second magnets 42 are provided and are evenly distributed circumferentially along the circular mounting component 41. The circular mounting component 41 is installed in an annular groove 11 at the bottom of the outer cup body 1. Preferably, the circular mounting component 41 and the annular groove 11 are interference-fitted or snap-fit ​​connected for easy assembly, disassembly, and maintenance.

[0028] The working process of this invention includes the following steps: Small volume liquid measurement (drainage flow rate ≤ inner core cup range): The drainage fluid is introduced into the inner core cup 2 through the drainage tube. Due to the small cross-sectional area of ​​the inner core cup 2, the liquid level rises rapidly, resulting in high reading accuracy.

[0029] Large volume liquid measurement (drainage volume > inner core cup range): Initial measurement: The drainage fluid is introduced into the inner core cup 2 through the drainage tube. Due to the small cross-sectional area of ​​the inner core cup 2, the liquid level rises rapidly, resulting in high reading accuracy. When the liquid volume in the inner core cup 2 reaches full scale, such as the 250ml mark, the injection is stopped, and the liquid volume V1 in the inner core cup 2 at this time is recorded.

[0030] Open the valve: When the liquid level in the inner core cup 2 reaches the preset full height mark, some liquid needs to be transferred to the outer cup body 1 to make room for measurement. At this time, flip, rotate or slide the annular mounting part 41 at the bottom of the outer cup body 1 so that the magnetic field generated by the second magnet 42 penetrates the cup wall, repelling the first magnet 32 ​​to move upward, driving the sealing part 33 to disengage from the liquid outlet 21 and opening the flow channel.

[0031] Communicating vessel equilibrium and drainage: After the outlet 21 is opened, the inner core cup 2 and the outer cup 1 form a communicating vessel. The liquid in the inner core cup 2 flows rapidly into the outer cup 1 under the influence of gravity. Because the cross-sectional area of ​​the outer cup 1 is much larger than that of the inner core cup 2, the liquid level in the inner core cup 2 drops rapidly after the liquid flows in, while the liquid level in the outer cup 1 rises slowly. The operator waits until the liquid levels in the inner core cup 2 and the outer cup 1 are equal, at which point the communicating vessel reaches equilibrium.

[0032] To close the valve: After the liquid level is reached, reverse the operation of the magnetic drive 4 to reset the seal 33 under the action of gravity and magnetic force, thus closing the outlet 21.

[0033] Subsequent measurement: Record the liquid height H in inner core cup 2 after the valve is closed. 残留 The drainage fluid was then introduced into the inner core cup 2 through the drainage tube. After the liquid level rose to a certain height, the injection was stopped, and the liquid height H in the inner core cup 2 at this time was recorded. 注入 Using H 注入 -H 残留 The volume V2 of the drainage fluid injected for the second time is obtained.

[0034] Repeated cycle: Repeat the steps from opening the valve to subsequent measurement to obtain the subsequent drainage fluid injection volumes V3, V4, ... VN. Use V1 + V2 + V3 + V4 + ... VN to obtain the total drainage fluid inflow volume.

[0035] This invention cleverly controls the opening and closing of the inner core and outer shell through a magnetically controlled valve. By utilizing the principle of communicating vessels and the liquid level difference calculation method, it not only ensures the accuracy of micro-measurement but also expands the measurement range.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0037] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A receiving device for accurate measurement of drainage fluid, characterized in that, include: The outer cup body (1) is a hollow container with an open top, used to store drainage fluid; The inner core cup (2) is fixed inside the outer cup body (1), and the bottom of the inner core cup (2) is provided with a liquid outlet (21). A magnetic valve core (3) is located at the bottom of the inner core cup (2) and is used to block or open the liquid outlet (21). A magnetic drive unit (4) is disposed at the bottom of the outer cup body (1) to generate a magnetic field to drive the magnetic valve core (3) to move relative to the inner core cup (2), thereby controlling the opening and closing of the liquid outlet (21).

2. The receiving device for accurate measurement of drainage fluid according to claim 1, characterized in that: The magnetic valve core (3) includes a slide rod (31), a first magnet (32) and a sealing element (33). The slide rod (31) is vertically arranged with multiple rods evenly distributed around the inner core cup (2). The first magnet (32) is slidably connected to the slide rod (31). The sealing element (33) is fixed to the first magnet (32). The sealing element (33) is used to block or open the liquid outlet (21).

3. The receiving device for accurate measurement of drainage fluid according to claim 1, characterized in that: The magnetic drive component (4) includes a circular mounting component (41) and a second magnet (42). The second magnet (42) is mounted on the circular mounting component (41). Multiple second magnets (42) are provided and are evenly distributed around the circumference of the circular mounting component (41).

4. The receiving device for accurate measurement of drainage fluid according to claim 3, characterized in that: The bottom of the outer cup body (1) is provided with an annular groove (11) for placing the annular mounting part (41).

5. The receiving device for accurate measurement of drainage fluid according to claim 2, characterized in that: The top of the slide bar (31) is provided with a limiting head.

6. The receiving device for accurate measurement of drainage fluid according to claim 1, characterized in that: A support and positioning rib (5) is provided between the inner wall of the outer cup body (1) and the outer wall of the inner core cup (2).

7. The receiving device for accurate measurement of drainage fluid according to claim 1, characterized in that: The inner core cup (2) has a high-precision scale line on its cup wall, and the minimum division value of the high-precision scale line is 1ml.

8. The receiving device for accurate measurement of drainage fluid according to claim 1, characterized in that: The outer wall of the outer cup body (1) is provided with coarse graduation lines, the minimum division value of which is 50ml or 100ml.

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