Catheter flow measuring device

Abstract

The invention relates to the technical field of catheter flow measurement, in particular to a catheter flow measurement device which comprises a water storage tank, a water storage tank, a supporting frame and a water outlet pipe. The water storage tank comprises a hollow tank body and a drainage pipe communicated with a water outlet in the bottom of the tank body; the water storage tank is supported and fixed above the water storage tank through the support frame, and the drainage pipe extends into the water storage tank; a water outlet at the bottom of the water storage tank is communicated with the water outlet pipe, and the end part of the water outlet pipe is used for being connected with a to-be-tested conduit; a notch is formed in the side wall of the end of the drainage pipe, the top of the notch is flush with the constant-water-level liquid level line of the water storage tank, and the vertical height between the constant-water-level liquid level line and the end of the water outlet pipe is the standard height specified when the catheter flow of the catheter to be tested is measured. Compared with the prior art, the catheter flow measuring device is convenient to use, simple in structure and low in manufacturing cost.

Description

Technical Field

[0001] The present application relates to the technical field of catheter flow measurement, and in particular to a catheter flow measurement device. Background Art

[0002] Interventional therapy is an emerging discipline that has developed rapidly in recent years and integrates imaging diagnosis and clinical treatment. It is a series of technologies that use puncture needles, catheters and other interventional medical devices to introduce specific instruments into the lesion site of the human body through natural channels or tiny incisions under the guidance and monitoring of imaging equipment such as digital subtraction angiography, ultrasound and magnetic resonance imaging. The catheter flow rate of interventional medical devices is a key parameter to maintain the unit flow rate of the catheter lumen and an important indicator for achieving the guiding function of the catheter.

[0003] Currently, the instruments or equipment for measuring catheter flow in the market usually adopt electronic automation devices, and calculate the water flow through pressure pumps and computer systems. The design and manufacturing costs are relatively high. Therefore, the technical field urgently needs a catheter flow measurement device that is easy to use, simple in structure, and low in manufacturing cost. Summary of the invention

[0004] In view of the problems existing in the prior art, the present application provides a catheter flow measurement device.

[0005] In order to solve the above technical problems, the present application provides a catheter flow measurement device, comprising: Water storage tanks, water tanks, support frames and outlet pipes; The water storage tank comprises a hollow tank body and a drainage pipe connected to a water outlet at the bottom of the tank body; The water storage tank is supported and fixed above the water storage tank by the support frame, and the drainage pipe extends into the water storage tank; The water outlet at the bottom of the water storage tank is connected to the water outlet pipe, and the end of the water outlet pipe is used to connect the catheter to be tested; A notch is provided on the side wall of the end of the drainage pipe, the top of the notch is flush with the constant water level line of the water storage tank, and the vertical height between the constant water level line and the end of the outlet pipe is the standard height specified for measuring the catheter flow rate of the catheter to be tested.

[0006] In some possible implementations, the water storage tank further includes a water inlet, which is connected to the tank body and is provided with a first valve.

[0007] In some possible implementations, a water tank baffle is further provided on the water tank between the drain pipe and the water outlet of the water tank, the bottom of the water tank baffle is lower than the constant water level liquid line, and the top of the water tank baffle is higher than the constant water level liquid line.

[0008] In some possible implementations, an overflow port is further opened on the side wall of the water storage tank, an overflow pipe is externally connected to the overflow port, and the vertical height of the overflow port is higher than the constant water level liquid line.

[0009] In some possible implementations, a second valve is provided on the drain pipe between the notch and the tank body, and a third valve is provided at the water outlet pipe.

[0010] In some possible implementations, the water outlet pipe is detachably connected to the water outlet at the bottom of the water storage tank.

[0011] Compared with the prior art, the catheter flow measurement device provided in the embodiment of the present application has the following advantages: A catheter flow measurement device in the present application includes a water storage tank, a water storage tank, a support frame and a water outlet pipe. The water storage tank includes a hollow tank body and a drain pipe connected to the water outlet at the bottom of the tank body. The water storage tank is supported and fixed above the water storage tank by the support frame, and the drain pipe extends into the water storage tank. The water outlet at the bottom of the water storage tank is connected to the water outlet pipe, and the end of the water outlet pipe is used to connect the catheter to be tested. The side wall of the end of the drain pipe is provided with a notch. Among them, the top of the notch is flush with the constant water level liquid line of the water storage tank, and the vertical height between the constant water level liquid line and the end of the water outlet pipe is the standard height specified for measuring the catheter flow of the catheter to be tested. When water is filled into the water storage tank and the water storage tank, and the water is drained out through the water outlet pipe to measure the flow of the catheter to be tested, the water storage tank can continuously replenish the water in the water storage tank, so that the liquid level of the water storage tank is always at the constant water level liquid line during the measurement process, meeting the specified requirements for measuring the flow of the catheter to be tested. Therefore, compared with the prior art, the present application provides a catheter flow measurement device that is easy to use, simple in structure, and low in manufacturing cost.

[0012] Other features and advantages of the present application will be set forth in the following description, and in part will become apparent from the description, or may be understood by practicing the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0014] Figure 1 It is a schematic diagram of an embodiment of a catheter flow measurement device provided by the present application; Figure 2It is a schematic diagram of another embodiment of a catheter flow measurement device provided by the present application.

[0015] Reference numerals: 100. Water storage tank; 110, tank body; 120, drain pipe; 121, notch; 122, second valve; 130, water inlet; 131, first valve; 200. Water storage tank; 210, constant water level line; 220, water tank baffle; 230, overflow pipe; 300, support frame; 400, water outlet pipe; 410, the third valve; 500. The catheter to be tested. Implementation

[0016] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0017] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0018] It is understood that the terms "first", "second", etc. used in this application can be used to describe various elements in this article, but these elements are not limited by these terms. These terms are only used to distinguish the first element from another element. When used here, the singular "one", "one" and "said / the" can also include plural forms, unless the context clearly indicates another way. It should also be understood that the terms "include / comprise" or "have" etc. specify the existence of stated features, wholes, steps, operations, components, parts or combinations thereof, but do not exclude the possibility of existing or adding one or more other features, wholes, steps, operations, components, parts or combinations thereof.

[0019] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0020] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside", "outside", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the present application and its embodiments, and are not intended to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation. Moreover, in addition to being used to indicate orientation or positional relationships, some of the above terms may also be used to express other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the present application can be understood according to the specific circumstances.

[0021] In addition, the terms "installed", "set", "provided with", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0022] In order to solve the above technical problems, the present application provides a catheter flow measurement device, referring to Figure 1 and Figure 2 As shown, the catheter flow measurement device comprises: A water storage tank 100, a water storage tank 200, a support frame 300 and a water outlet pipe 400; The water storage tank 100 includes a hollow tank body 110 and a drain pipe 120 connected to a water outlet at the bottom of the tank body 110; The water storage tank 100 is supported and fixed above the water storage tank 200 by the support frame 300, and the drainage pipe 120 extends into the water storage tank 200; The water outlet at the bottom of the water storage tank 200 is connected to the water outlet pipe 400, and the end of the water outlet pipe 400 is used to connect to the catheter 500 to be tested; A notch 121 is provided on the side wall of the end of the drain pipe 120, and the top of the notch 121 is flush with the constant water level line 210 of the water storage tank 200. The vertical height between the constant water level line 210 and the end of the outlet pipe 400 is the standard height h specified for measuring the catheter flow rate of the catheter 500 to be tested.

[0023] In this embodiment, the catheter flow measurement device is as follows Figure 1 and Figure 2As shown, it includes a water storage tank 100, a water storage tank 200, a support frame 300 and a water outlet pipe 400. The support frame 300 may be a triangular support, and the water storage tank 100 is supported and fixed above the water storage tank 200 by the support frame 300. The water storage tank 100 may include a hollow tank body 110 and a drain pipe 120. The tank body 110 is used to store water and may be in a columnar shape. The bottom of the tank body 110 has a water outlet, and the water outlet is connected to the drain pipe 120. The drain pipe 120 may be inserted deep into the water storage tank 200.

[0024] The bottom of the water storage tank 200 has a water outlet, which can have a specific size and is connected to a water outlet pipe 400. The end of the water outlet pipe 400 is used to connect the catheter 500 to be tested. The end of the water outlet pipe 400 can be designed as a 6% (Luer) external cone joint. During measurement, the catheter 500 to be tested is connected to the Luer external cone joint at the end of the water outlet pipe 400, and a collection / measurement container is used at the other end of the catheter 500 to be tested to prepare the outflowing liquid. After that, the timing is continuously performed to measure the catheter flow rate.

[0025] Among them, a notch 121 may be opened on the side wall of the end of the drain pipe 120, and the top surface of the notch 121 is flush with the height of the constant water level line 210 set by the water storage tank 200, and the vertical height between the constant water level line 210 and the end of the outlet pipe 400 is the standard height h specified when measuring the catheter flow rate of the catheter 500 to be tested. Taking the disposable sterile catheter in the intravascular catheter as an example, the industry standard "Intravascular Catheter Disposable Sterile Catheter Part 1: General Requirements" stipulates the catheter flow measurement method and device, which requires the use of a constant liquid level container when measuring the catheter flow rate. The constant liquid level container can provide a flow rate of 525±25ml / min and a static pressure head of 1000±5mm, that is, the catheter flow rate is measured under a static water pressure of a standard height h of 1m. The standard height h in the catheter flow measurement device of the embodiment of the present application is consistent with the height specified in the relevant standards required by the specifications of the catheter 500 to be tested, and the details are not repeated here.

[0026] Furthermore, the catheter flow measurement device of the embodiment of the present application can also achieve constant liquid level to meet the requirements of relevant standards. Specifically, in the catheter flow measurement device, when measuring flow, the water storage tank 200 always drains water to the catheter to be measured through the outlet pipe 400, and the liquid level tends to decrease. During this process, in view of the design of the notch 121 of the drain pipe 120, once the liquid level of the water tank 200 is lower than the constant water level line 210, the notch 121 of the drain pipe 120 is exposed to the atmosphere, and the water tank 100 can take in air through the notch 121 of the drain outlet, and drain water to replenish the water tank 200 to prevent the liquid level from being too low; and once the liquid level reaches the constant water level line 210, the notch 121 of the drain pipe 120 is submerged below the liquid level, and the water tank 100 cannot take in air. At this time, due to the effect of atmospheric pressure, the water tank 200 stops filling water to prevent the liquid level from being too high, so that during the catheter flow measurement process, the liquid level of the water tank 200 is always dynamically near the constant water level line 210, meeting the requirements of relevant standards for constant liquid level containers.

[0027] Compared with the prior art, the catheter flow measurement device provided in the embodiment of the present application has the following advantages: A catheter flow measurement device in the present application includes a water storage tank 100, a water storage tank 200, a support frame 300 and a water outlet pipe 400. The water storage tank 100 includes a hollow tank body 110 and a drain pipe 120 connected to the water outlet at the bottom of the tank body 110. The water storage tank 100 is supported and fixed above the water storage tank 200 by the support frame 300, and the drain pipe 120 extends into the water storage tank 200. The water outlet at the bottom of the water storage tank 200 is connected to the water outlet pipe 400, and the end of the water outlet pipe 400 is used to connect the catheter 500 to be tested. A notch 121 is opened on the side wall of the end of the drain pipe 120. Among them, the top of the notch 121 is flush with the constant water level line 210 of the water storage tank 200, and the vertical height between the constant water level line 210 and the end of the water outlet pipe 400 is the standard height h specified when measuring the catheter flow of the catheter 500 to be tested. When water is injected into the water storage tank 100 and the water storage tank 200 and the water is discharged to the outside through the water outlet pipe 400 to measure the flow rate of the catheter 500 to be tested, the water storage tank 100 can continuously replenish the water in the water storage tank 200, so that the liquid level of the water storage tank 200 is always at the constant water level line 210 during the measurement process, meeting the prescribed requirements for the flow measurement of the catheter 500 to be tested. Therefore, compared with the prior art, the present application provides a catheter flow measurement device that is easy to use, simple in structure, and low in manufacturing cost.

[0028] In some possible implementations, the water storage tank 100 further includes a water inlet 130 , which is in communication with the tank body 110 and is provided with a first valve 131 .

[0029] In this embodiment, see Figure 1 and Figure 2 As shown, the water storage tank 100 may also have a water inlet 130 above the tank body 110. The water inlet 130 is connected to the tank body 110 and has a first valve 131, which can facilitate the filling of water into the water storage tank 100. After the water filling is completed, the first valve 131 can be closed to block air from entering the tank body 110.

[0030] In some possible implementations, a water tank baffle 220 is further provided on the water tank 200 between the drain pipe 120 and the water outlet of the water tank 200 , the bottom of the water tank baffle 220 is lower than the constant water level liquid line 210 , and the top of the water tank baffle 220 is higher than the constant water level liquid line 210 .

[0031] In this embodiment, see Figure 1 and Figure 2 As shown, a water tank baffle 220 is also provided between the drain pipe 120 and the water outlet of the water tank 200. After the entire water tank 200 is filled with water, the water tank baffle 220 can be partially located in the liquid surface. After the water is discharged from the drain pipe 120, it may cause the water surface to fluctuate. In order to further stabilize the water surface, the water tank baffle 220 separates the left and right water surfaces of the water tank 200 (the bottom is connected), preventing the water waves when the left side is filled with water from spreading to the right side, thereby reducing the interference with the measurement data.

[0032] In some possible implementations, an overflow port is further opened on the side wall of the water storage tank 200 , and an overflow pipe 230 is externally connected to the overflow port. The vertical height of the overflow port is higher than the constant water level line 210 .

[0033] In this embodiment, an overflow port is also opened on the side wall of the water storage tank 200, and the position of the overflow port is higher than the constant water level liquid line 210. When the liquid level is too high, excess water can be discharged through the overflow port and the overflow pipe 230 connected to the overflow port to avoid the situation where the liquid level is too high due to blockage of the water outlet pipe 400 or other situations.

[0034] In some possible implementations, a second valve 122 is provided on the drain pipe 120 between the notch 121 and the tank body 110 , and a third valve 410 is provided at the water outlet pipe 400 .

[0035] In this embodiment, if Figure 1 or Figure 2 As shown, a second valve 122 is also provided above the notch 121 of the drain pipe 120. After water is filled in the tank 110, water can be stored by turning the valve. A third valve 410 is also provided at the outlet pipe 400 to facilitate timely stopping of measurement.

[0036] In some possible implementations, the water outlet pipe 400 is detachably connected to the water outlet at the bottom of the water storage tank 200 .

[0037] In this embodiment, when measuring the flow of conduits of different sizes or structures, the height and diameter of the water outlet pipe 400 may be different. Based on this, a detachable connection, such as a threaded connection, may be used between the water outlet pipe 400 and the water outlet at the bottom of the water storage tank 200. The water outlet pipe 400 may have a variety of heights and diameters to facilitate flow measurement of different types of conduits.

[0038] The technical features of the above embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0039] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A catheter flow measurement device, characterized in that: include: Water storage tanks, water tanks, support frames and outlet pipes; The water storage tank comprises a hollow tank body and a drainage pipe connected to a water outlet at the bottom of the tank body; The water storage tank is supported and fixed above the water storage tank by the support frame, and the drainage pipe extends into the water storage tank; The water outlet at the bottom of the water storage tank is connected to the water outlet pipe, and the end of the water outlet pipe is used to connect the catheter to be tested; A notch is provided on the side wall of the end of the drainage pipe, the top of the notch is flush with the constant water level line of the water storage tank, and the vertical height between the constant water level line and the end of the outlet pipe is the standard height specified for measuring the catheter flow rate of the catheter to be tested.

2. The catheter flow measurement device according to claim 1, characterized in that: The water storage tank also includes a water inlet, which is communicated with the tank body and is provided with a first valve.

3. The catheter flow measurement device according to claim 1, characterized in that: A water tank baffle is also arranged on the water tank between the drain pipe and the water outlet of the water tank, the bottom of the water tank baffle is lower than the constant water level liquid line, and the top of the water tank baffle is higher than the constant water level liquid line.

4. The catheter flow measurement device according to any one of claims 1 to 3, characterized in that: The side wall of the water storage tank is also provided with an overflow port, the overflow port is externally connected with an overflow pipe, and the vertical height of the overflow port is higher than the constant water level liquid line.

5. The catheter flow measurement device according to any one of claims 1 to 3, characterized in that: A second valve is arranged on the drainage pipe between the notch and the tank body, and a third valve is arranged at the water outlet pipe.

6. The catheter flow measurement device according to any one of claims 1 to 3, characterized in that: The water outlet pipe is detachably connected to the water outlet at the bottom of the water storage tank.

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