Bubble catcher and blood purification system

Abstract

The utility model provides a bubble catcher and a blood purification system, and relates to the technical field of medical equipment.The bubble catcher comprises a shell, the shell comprises a top wall and a first side wall, the first side wall is obliquely arranged relative to the top wall, a liquid inlet hole is formed in the top wall, the first side wall is located on the extension side in the axial direction of the liquid inlet hole, and the first side wall is located in the extension side in the axial direction of the liquid inlet hole; liquid flowing out of the liquid inlet hole can fall on the first side wall; the fixing part is arranged on the outer wall of the shell, and the fixing part is used for being fixedly connected with the outside. According to the bubble capturer provided by the embodiment of the invention, the installation work of the bubble capturer can be simplified, and the situation that bubbles are generated or blood cells are damaged due to large fall during blood return can be reduced; meanwhile, due to the fact that the first side wall which is obliquely arranged can play a certain buffering role when the blood flows into the bubble catcher, the blood flow speed can be further increased, and the blood coagulation condition can be reduced.

Description

Technical Field

[0001] The present application relates to the technical field of medical equipment, and in particular to a bubble trap and a blood purification system. Background Art

[0002] In related technologies, blood purification equipment removes toxic substances from the patient's blood by drawing it out of the body, using an adsorbent to remove them, and then returning them to the body to treat the disease. In the blood purification circuit, a venous trap is required on the venous side of the blood circuit to collect and separate air trapped in the blood during the purification process and to store the blood transported by the blood circuit. This prevents air bubbles from directly entering the body and posing a life-threatening risk, thereby ensuring the safety of patient treatment.

[0003] Currently, blood purification circuits utilize conventional intravenous cans, which require specialized clamping devices to secure them to the blood purification equipment, making them complex to use and install. Furthermore, to prevent air bubbles from entering the returned blood, the blood flow rate must be controlled within a certain range, increasing the risk of clotting. Utility Model Content

[0004] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a bubble trap and a blood purification system, which can conveniently fix the bubble trap on the blood purification device and effectively reduce the risk of blood coagulation.

[0005] In one aspect, an embodiment of the present application provides a bubble trap, comprising:

[0006] a housing comprising a top wall and a first side wall, the first side wall being inclined relative to the top wall, the top wall being provided with a liquid inlet, the first side wall being located on an axially extending side of the liquid inlet so that liquid flowing out of the liquid inlet can fall on the first side wall; and

[0007] The fixing portion is provided on the outer wall of the shell and is used for fixing the fixing portion with the outside.

[0008] Furthermore, the fixing portion has a fixing slot.

[0009] Furthermore, the first side wall is funnel-shaped as a whole, wherein the cross-sectional area of ​​the first side wall gradually decreases in a direction away from the top wall.

[0010] Furthermore, the liquid inlet includes a first liquid inlet and a second liquid inlet spaced apart from each other on the top wall.

[0011] Furthermore, the shell also includes a second side wall, the second side wall is connected to an end of the first side wall away from the top wall, the second side wall is cylindrical, and the fixing portion is arranged on the second side wall.

[0012] Furthermore, a first card slot is provided on the first side wall, and a second card slot is provided on the second side wall.

[0013] Furthermore, the first card slot is formed by the indentation of the first side wall; and / or the second card slot is formed by the indentation of the second side wall.

[0014] Furthermore, the top wall has an exhaust hole.

[0015] Another embodiment of the present application provides a blood purification system comprising a plasma separation device and the bubble trap as described above, wherein the plasma separation device has an input end and an output end, wherein the input end is used for liquid communication with a blood collection tube, and the output end is liquid communication with the liquid inlet.

[0016] Furthermore, the blood collection tube circuit is provided with a pressure detection device, and the pressure detection device includes an elastic pressure-resistant film.

[0017] It can be seen from the above technical solutions that the embodiments of the present application have at least the following beneficial effects:

[0018] In the bubble trap and blood purification system provided by the embodiments of the present application, a fixing portion is provided on the first side wall, and the shell can be fixed to the outside through the fixing portion, without the need to separately provide a clamping mechanism to install the bubble trap, thus simplifying the installation of the bubble trap; the first side wall is inclined and is located on the extended side of the liquid inlet, that is, the projection of the liquid inlet along its own axis can fall on the first side wall, so that when blood drips from the liquid inlet onto the first side wall, the inclined first side wall can play a certain buffering role on the blood, which is beneficial to reducing the generation of bubbles or damage to blood cells due to the large drop when blood returns; at the same time, since the inclined first side wall can play a certain buffering role when blood flows into the bubble trap, it is beneficial to further increase the blood flow rate while ensuring that the bubbles can be effectively separated from the blood and the blood cells are prevented from being damaged, and it also helps to reduce the risk of coagulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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 paying any creative labor.

[0020] Figure 1 A schematic structural diagram of a bubble trap provided in one embodiment of the present application;

[0021] Figure 2 A connection diagram of a blood purification system provided in one embodiment of the present application.

[0022] Reference numerals:

[0023] 1. Arterial line; 2. Blood collection pump; 3. Plasma pump; 4. Infusion pump; 5. Venous line; 6. Adsorption column; 10. Plasma separator; 11. Input port; 12. First output port; 13. Second output port;

[0024] 110, top wall; 111, liquid inlet; 1111, first liquid inlet; 1112, second liquid inlet; 112, exhaust channel; 120, first side wall; 121, first card slot; 130, second side wall; 131, second card slot; 140, bottom wall; 141, blood return outlet;

[0025] 200. Fixed part. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0027] See also Figure 1 As shown, an embodiment of the present application discloses a bubble trap, including a shell and a fixing portion 200. The fixing portion 200 is arranged on the outer wall of the shell, and the fixing portion 200 is connected to the outside to fix the shell to the outside.

[0028] Specifically, the housing includes a top wall 110 and a first side wall 120. The first side wall 120 is inclined relative to the top wall 110. The top wall 110 is provided with a liquid inlet 111. The first side wall 120 is located on the axial extension of the liquid inlet 111 so that liquid flowing out of the liquid inlet 111 can fall on the first side wall 120. The housing also includes a fixing portion 200 provided on the outer wall of the housing for fixed connection to the outside. In the embodiment of the present application, the liquid is specifically blood.

[0029] In the bubble trap provided in the embodiment of the present application, a fixing portion 200 is provided on the first side wall 120, and the shell can be fixed to the outside by the fixing portion 200, without the need for an additional clamping mechanism to fix the bubble trap. This simplifies the installation of the bubble trap. At the same time, the first side wall 120 is tilted, and the extended side of the liquid inlet 111 is located on the first side wall 120. In other words, the projection of the liquid inlet 111 along its own axis can fall on the first side wall 120. In this way, when blood drips onto the first side wall 120, the tilted first side wall 120 can play a certain buffering role, which is beneficial to reducing the generation of bubbles or damage to blood cells due to the large drop when blood returns. At the same time, because the tilted first side wall 120 can play a certain buffering role when blood flows into the bubble trap, it is beneficial to further increase the blood flow rate and also helps to reduce blood clotting.

[0030] In a possible embodiment, the top wall 110 has a plane, which is parallel to the horizontal plane during practical application.

[0031] In one possible embodiment, the axis of the liquid inlet 111 is arranged perpendicular to the horizontal plane. In actual application, the first side wall 120 is located below the liquid inlet 111. When blood flows into the bubble trap from the liquid inlet 111, the blood can fall vertically under the action of gravity and fall on the first side wall 120. Since the first side wall 120 is arranged at an angle, it can provide a certain buffering effect when the blood falls on the first side wall 120, thereby reducing the generation of bubbles and effectively preventing blood cells from being damaged during blood return. Due to the setting of the first side wall 120, bubbles or damaged blood cells can be reduced, thereby further increasing the blood flow rate, which is conducive to reducing the phenomenon of blood coagulation.

[0032] See also Figure 1 As shown, in one possible embodiment, the liquid inlet 111 includes a first liquid inlet 1111 and a second liquid inlet 1112 that are spaced apart. Specifically, the first liquid inlet 1111 and the second liquid inlet 1112 are both arranged perpendicular to the top wall 110. When the top wall 110 is parallel to the horizontal plane, the flow direction of the blood flowing out of the first liquid inlet 1111 and the second liquid inlet 1112 can be parallel to the vertical direction. It should be noted that the first side wall 120 is located on the extended side of the first liquid inlet 1111 and the second liquid inlet 1112, so that the blood flowing out of the first liquid inlet 1111 and the second liquid inlet 1112 can fall on the first side wall 120, thereby reducing the generation of bubbles.

[0033] See also Figure 1As shown, in some embodiments of the present application, the first side wall 120 is funnel-shaped as a whole, wherein the cross-sectional area of ​​the first side wall 120 gradually decreases as it moves away from the top wall 110. In this way, the inner wall of the first side wall 120 can be inclined, thereby providing a buffer for blood flowing out of the liquid inlet 111.

[0034] See also Figure 1 In one possible embodiment, the liquid inlet 111 includes a first liquid inlet 1111 and a second liquid inlet 1112. One of the first liquid inlet 1111 and the second liquid inlet 1112 is used for liquid communication with the plasma input pipeline, and the other is used for liquid communication with the plasma input pipeline. The first liquid inlet 1111 and the second liquid inlet 1112 are disposed on the same side of the first side wall 120, that is, the first liquid inlet 1111 and the second liquid inlet 1112 are located on the same side of the central axis of the first side wall 120. In this way, the blood flowing out of the first liquid inlet 1111 and the second liquid inlet 1112 can contact and fuse with each other on the first side wall 120, thereby improving the mixing effect of blood cells and plasma.

[0035] Of course, in some other embodiments, the first liquid inlet 1111 and the second liquid inlet 1112 may also be disposed at other positions on the top wall 110 , which is not limited herein.

[0036] In the embodiment of the present application, the fixing portion 200 and the housing may be an integral structure, or a separate structure assembled later, which is not limited here.

[0037] In some embodiments of the present application, the fixing portion 200 has a fixing slot, wherein the fixing slot corresponds to the blood purification device, so that the bubble trap can be clipped onto the blood purification device through the fixing slot, thereby eliminating the need for a separate clamping device to fix the bubble trap to the blood purification device.

[0038] See also Figure 1 In some embodiments of the present application, the shell further includes a second side wall 130, the second side wall 130 is connected to the end of the first side wall 120 away from the top wall 110, the second side wall 130 is cylindrical, and the fixing portion 200 is arranged on the second side wall 130. The second side wall 130 encloses a accommodating cavity for accommodating blood. It should be noted that a bottom wall 140 is provided on the side of the second side wall 130 away from the top wall 110, and the bottom wall 140 is provided with a blood return outlet 141. In actual application, after the blood flows out of the liquid inlet 111, it first contacts the first side wall 120, and then flows along the first side wall 120 to the accommodating cavity enclosed by the second side wall 130. The second side wall 130 is cylindrical, which can accelerate the blood to flow to the blood return outlet 141, thereby reducing blood coagulation.

[0039] See also Figure 1In some embodiments of the present application, a first slot 121 is provided on the first sidewall 120, and a second slot 131 is provided on the second sidewall 130. In other words, the first slot 121 is provided at the upper portion of the housing, and the second slot 131 is provided at the lower portion of the housing. This allows for liquid level sensors to be mounted in the first slot 121 and the second slot 131, respectively, to monitor the liquid level within the bubble trap.

[0040] Please continue to see Figure 1 In a possible implementation, the first card slot 121 and the liquid inlet hole 111 are staggered, which can reduce the impact of blood flowing out of the liquid inlet hole 111 on the liquid level sensor installed on the first card slot 121.

[0041] In some embodiments of the present application, the first slot 121 is formed by the first side wall 120 being recessed. In other words, the first slot 121 and the first side wall 120 are an integrated structure. This simplifies the structure of the bubble trap.

[0042] In some embodiments of the present application, the second slot 131 is formed by the second side wall 130 being recessed. In other words, the second slot 131 and the second side wall 130 are an integrated structure. This simplifies the structure of the bubble trap.

[0043] In some embodiments of the present application, the top wall 110 has an exhaust hole, through which bubbles in the bubble trap can be discharged. At the same time, the provision of the exhaust hole can also balance the pressure difference between the inside and outside of the bubble trap, allowing liquid to be discharged more smoothly from the blood return outlet 141.

[0044] See also Figure 1 In a possible output mode, the exhaust hole is connected to the external exhaust bag through the exhaust channel 112, and the gas in the bubble trap can be discharged from the bubble trap through the exhaust hole and the exhaust channel 112.

[0045] See also Figure 1 and Figure 2 As shown, another embodiment of the present application discloses a blood purification system, including a plasma separation device 10 and the bubble trap described above. The plasma separation device 10 has an input end 11 and an output end. The input end 11 is used for fluid communication with the blood collection tube circuit, and the output end is fluid communication with the liquid inlet hole 111. In this embodiment, the output end includes a first output port 12 and a second output port 13.

[0046] See also Figure 1 and Figure 2As shown, in a possible embodiment, the blood purification system includes an arterial line 1, a blood collection pump 2, a plasma separation device 10, a venous line 5, a plasma line, a plasma pump 3, an adsorption column 6 and the bubble trap as described above, wherein the plasma separation device 10 has an input end 11, a first output port 12 and a second output port 13, the blood collection pump 2 is connected between the arterial line 1 and the input end 11, the first output port 12 is liquid-connected to the second liquid inlet 1112 through a pipeline, the second output port 13 is connected to the input end 11 of the plasma pump 3 through a pipeline, the output end of the plasma pump 3 is connected to the input end 11 of the adsorption column 6 through a pipeline, and the output end of the adsorption column 6 is liquid-connected to the first liquid inlet 1111 through a pipeline. The plasma separator 10 separates blood into blood cells and plasma. The blood cells flow out of the plasma separator 10 through the first outlet 12 and into the bubble trap through the second outlet 13. The plasma flows out of the plasma separator 10 through the second outlet 13, passes through the plasma pump 3 and the adsorption column 6, and then flows into the bubble trap through the first liquid inlet 1111. After the bubbles are removed from the bubble trap, the blood is returned to the human body through the venous line 5.

[0047] In some embodiments of the present application, the blood collection tube circuit is provided with a pressure detection device, and the pressure monitoring device is used to monitor the fluid pressure of the blood collection tube circuit.

[0048] In one possible embodiment, the pressure detection device includes an elastic pressure-resistant film. Specifically, the pressure-resistant film contacts the blood in the blood collection tube and reflects the fluid pressure in the blood collection tube by expanding and contracting.

[0049] In some embodiments of the present application, the plasma separation device 10 includes a plasma separator or a centrifugal plasma separator, which can separate blood into blood cells and plasma.

[0050] In the description of this application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", 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.

[0051] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, unless otherwise specified, "plurality" means two or more.

[0052] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediary, or internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on specific circumstances.

[0053] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0054] It should be understood that although the steps in the flowcharts of the accompanying drawings are shown in sequence as indicated by the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some of the steps in the flowcharts of the accompanying drawings may include multiple sub-steps or multiple stages, and these sub-steps or stages are not necessarily executed at the same time, but can be executed at different times, and their execution order is not necessarily sequential, but can be executed in turn or alternately with other steps or at least a portion of the sub-steps or stages of other steps.

Claims

1. A bubble trap, characterized in that: include: a housing comprising a top wall and a first side wall, the first side wall being inclined relative to the top wall, the top wall being provided with a liquid inlet, the first side wall being located on an axially extending side of the liquid inlet so that liquid flowing out of the liquid inlet can fall on the first side wall; and The fixing portion is provided on the outer wall of the shell and is used for fixing the fixing portion with the outside.

2. The bubble trap according to claim 1, characterized in that The fixing portion has a fixing slot.

3. The bubble trap according to claim 2, characterized in that The first side wall is funnel-shaped as a whole, wherein the cross-sectional area of ​​the first side wall gradually decreases in a direction away from the top wall.

4. The bubble trap according to claim 1, wherein: The liquid inlet hole includes a first liquid inlet and a second liquid inlet spaced apart on the top wall.

5. The bubble trap according to any one of claims 1 to 4, characterized in that: The shell further includes a second side wall connected to an end of the first side wall away from the top wall. The second side wall is cylindrical, and the fixing portion is arranged on the second side wall.

6. The bubble trap according to claim 5, characterized in that A first card slot is provided on the first side wall, and a second card slot is provided on the second side wall.

7. The bubble trap according to claim 6, characterized in that The first card slot is formed by the indentation of the first side wall; and / or the second card slot is formed by the indentation of the second side wall.

8. The bubble trap according to claim 1, wherein: The top wall has an exhaust hole.

9. A blood purification system, characterized in that: It comprises a plasma separation device and the bubble trap according to any one of claims 1 to 8, wherein the plasma separation device has an input end and an output end, the input end is used for liquid communication with a blood collection tube, and the output end is liquid communication with the liquid inlet.

10. The blood purification system according to claim 9, characterized in that: The blood collection tube is provided with a pressure detection device, which includes an elastic pressure-resistant film.

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