Left heart drainage connection device for preventing negative pressure
By introducing a protective box and cover into the intracardiac drainage device, the problem of the drainage tube clamping and sucking onto the inner wall of the heart is solved, thereby improving safety and facilitating connection, and reducing the risk of damage to the intracardiac drainage device.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FUWAI HOSPITAL CHINESE ACAD OF MEDICAL SCI & PEKING UNION MEDICAL COLLEGE
- Filing Date
- 2025-03-26
- Publication Date
- 2026-07-24
AI Technical Summary
The drainage tubes of existing intracardiac drainage devices are prone to clamping and sucking onto the inner wall of the heart during use, leading to heart damage and increasing safety risks.
Design a left ventricular drainage connection device to prevent negative pressure, including a protective box and a protective cover. The protective cover automatically opens the air inlet when there is negative pressure, so that the drainage tube can be connected to the outside and prevent the heart wall from being pinched. The protective box is equipped with a connector to facilitate connection with the drainage pump and drainage tube.
It reduces the adhesion of the drainage tube to the heart wall, prevents damage, improves the safety of intracardiac drainage devices, is easy to connect and low in cost, and is easy to promote and apply.
Smart Images
Figure CN224540665U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical device technology, and in particular to a left ventricular drainage connection device for preventing negative pressure. Background Technology
[0002] In related technologies, before performing heart surgery, the drainage tube of an intracardiac drainage device needs to be inserted into the heart, and the drainage pump works to draw blood back from the heart. However, the inner wall of the heart is thin, and the porous drainage tube is prone to clamping and sucking onto the inner wall of the heart during use, making the heart susceptible to additional damage, increasing safety risks, and leaving room for improvement. Utility Model Content
[0003] This invention aims to at least solve one of the technical problems existing in the prior art. Therefore, one objective of this invention is to provide a left ventricular drainage connection device that prevents negative pressure, which can improve the safety of using intracardiac drainage equipment.
[0004] A left ventricular drainage connection device for preventing negative pressure according to an embodiment of the present invention is used in an intracardiac drainage device. The intracardiac drainage device includes a drainage tube and a drainage pump. The left ventricular drainage connection device includes: a protective box having a first connector and a second connector, the first connector being used to connect the drainage pump, the second connector being used to connect the drainage tube, and the protective box having an air inlet; and a protective cover disposed inside the protective box and movably connected to the protective box for opening and closing the air inlet. The intracardiac drainage device is adapted to draw fluid from the heart when the air inlet is closed by the protective cover, and the protective cover is adapted to open the air inlet when negative pressure is generated in the drainage tube, so that the drainage tube can communicate with the outside.
[0005] The left ventricular drainage connection device for preventing negative pressure according to an embodiment of this utility model, by setting a left ventricular drainage connection device between the drainage tube and the drainage pump, allows the drainage tube to communicate with the outside when a certain negative pressure is generated in the left ventricle, thereby preventing further suction of the heart wall. This reduces the suction of the drainage tube to the heart wall and prevents damage to the heart due to suction of the drainage tube to the heart wall, thus improving the safety of the intracardiac drainage equipment. In addition, because a connector is set on the protective box, the left ventricular drainage connection device can be directly connected between the drainage tube and the drainage pump without modifying the existing drainage tube and drainage pump. It is convenient to connect and use, has low manufacturing cost, and is easy to promote and apply.
[0006] According to some embodiments of the present invention, the protective cover is slidably connected to the protective box, the size of the protective cover is larger than the size of the air inlet, and the protective cover is adapted to cover the air inlet to close the air inlet.
[0007] In some embodiments, the protective box has an air inlet pipe that communicates with the air inlet and is located inside the protective box. The air inlet pipe extends along a direction perpendicular to the wall portion of the protective box where the air inlet is located. The protective cover is disposed inside the air inlet pipe and is slidably connected to the air inlet pipe. The air inlet pipe has a notch on the side near the air inlet, and the protective cover is adapted to open the air inlet so that the drainage pipe communicates with the air inlet through the notch.
[0008] In some embodiments, the outer periphery of the protective cover and one of the inner walls of the air intake pipe have a groove, and the outer periphery of the protective cover and the other of the inner walls of the air intake pipe have a slider, the slider slidingly engaging with the groove.
[0009] In some embodiments, the protective box has a plurality of baffles, each baffle extending in a direction perpendicular to the wall portion of the protective box where the air inlet is located and located inside the protective box. The plurality of baffles are located on the outer periphery of the air inlet and are adapted to be arranged at circumferential intervals along the air inlet. The protective cover is located between the plurality of baffles and is slidably connected to the plurality of baffles respectively. The protective cover is adapted to open the air inlet so that the drainage tube communicates with the air inlet through the gap between two adjacent baffles.
[0010] In some embodiments, the outer edge of the protective cover has a plurality of mating grooves, which are arranged at intervals along the circumference of the protective cover and correspond one-to-one with a plurality of the baffles. The mating grooves are slidably engaged with the baffles.
[0011] In some embodiments, the protective box further includes a guide post located inside the protective box, one end of the guide post being connected to the protective box, and the other end of the guide post extending toward the air inlet, with the protective cover slidingly engaged with the guide post.
[0012] According to some embodiments of the present invention, the protective cover is rotatably connected to the protective box, the size of the protective cover is larger than the size of the air inlet, and the protective cover is adapted to cover the air inlet to close the air inlet.
[0013] In some embodiments, the left ventricular drainage connection device for preventing negative pressure further includes a torsion spring, wherein the protective cover and the protective box are rotatably connected via a rotating shaft, the torsion spring is sleeved on the rotating shaft, and both ends of the torsion spring are in contact with the protective cover and the protective box, respectively.
[0014] According to some embodiments of the present invention, the protective box has a first wall portion, and the air inlet is disposed on the first wall portion, wherein the extending direction of the first wall portion is inclined to the horizontal direction.
[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0016] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:
[0017] Figure 1 This is a schematic diagram of the structure of an intracardiac drainage device according to some embodiments of the present invention;
[0018] Figure 2 This is a cross-sectional view of a left ventricular drainage connection device according to some embodiments of the present invention from a certain perspective and in a certain state, wherein the left ventricular drainage connection device is arranged horizontally.
[0019] Figure 3 This is a cross-sectional view of a left ventricular drainage connection device according to some embodiments of the present invention from one perspective and in another state, wherein the left ventricular drainage connection device is arranged at an angle.
[0020] Figure 4 This is a cross-sectional view of the left ventricular drainage connection device according to some embodiments of the present invention from another perspective;
[0021] Figure 5 This is a cross-sectional view of the left ventricular drainage connection device according to other embodiments of the present invention from one perspective;
[0022] Figure 6 This is a cross-sectional view of the left ventricular drainage connection device according to other embodiments of the present invention from another perspective;
[0023] Figure 7 This is a cross-sectional view of the left ventricular drainage connection device according to some embodiments of the present invention from one perspective;
[0024] Figure 8 This is a cross-sectional view of the left ventricular drainage connection device according to some embodiments of the present invention from another perspective;
[0025] Figure 9 This is a cross-sectional view of a left ventricular drainage connection device according to some embodiments of the present invention.
[0026] Figure label:
[0027] 1000 units of intracardiac drainage equipment, 100 units of left ventricular drainage connection device, 200 units of drainage tube, and 300 units of drainage pump.
[0028] Protective box 10, first connector 11, second connector 12, wall 13, first wall 131, air inlet pipe 14, slider 141, notch 142, air inlet 15, guide post 16, baffle 17.
[0029] Protective cover 20, slide groove 21, mating groove 22, torsion spring 30, rotating shaft 40. Detailed Implementation
[0030] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.
[0031] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0033] The following is for reference. Figures 1-9 Description of a left ventricular drainage connection device 100 for preventing negative pressure according to an embodiment of the present invention.
[0034] like Figures 1-9As shown, according to an embodiment of the present invention, the left ventricular drainage connection device 100 for preventing negative pressure, the intracardiac drainage device 1000 may include a drainage tube 200 and a drainage pump 300. The left ventricular drainage connection device 100 can be used in the intracardiac drainage device 1000. For example, one end of the drainage tube 200 can extend into the heart, and the other end of the drainage tube 200 can be connected to the left ventricular drainage connection device 100. The drainage pump 300 can be connected to the left ventricular drainage connection device 100, which facilitates the connection between the drainage pump 300 and the drainage tube 200 through the left ventricular drainage connection device 100. Thus, the drainage pump 300 can drive the drainage tube 200 to draw fluid from the heart, ensuring the normal operation of the intracardiac drainage device 1000.
[0035] The left ventricular drainage connection device 100 may include a protective box 10 and a protective cover 20. The protective box 10 may have a first connector 11 and a second connector 12. The first connector 11 may be connected to the drainage pump 300, and the second connector 12 may be connected to the drainage tube 200, so that the drainage pump 300 can be connected to the drainage tube 200 through the protective box 10. The protective box 10 may have an air inlet 15, and the internal space of the protective box 10 can be connected to the outside through the air inlet 15. The protective cover 20 may be set inside the protective box 10, and the protective cover 20 may be movably connected to the protective box 10, which is conducive to opening and closing the air inlet 15.
[0036] When the intracardiac drainage device 1000 is working normally, that is, when the drainage tube 200 can normally draw fluid from the heart without clamping the inner wall of the heart, the protective cover 20 can normally close the air inlet 15. For example, the protective cover 20 can automatically fall down under its own weight to close the air inlet 15, and the protective cover 20 can be maintained in the position of closing the air inlet 15 under its own weight, thereby enabling the intracardiac drainage device 1000 to draw fluid from the heart and improving the stability of the intracardiac drainage device 1000 in operation.
[0037] When the drainage tube 200 clamps the inner wall of the heart and the protective cover 20 closes the air inlet 15, the drainage pump 300 can generate negative pressure in the drainage tube 200. Since the drainage tube 200 can be connected to the protective box 10, the protective cover 20 can overcome its own weight under the action of negative pressure to open the air inlet 15, so that the drainage tube 200 can be connected to the outside. Thus, the drainage pump 300 can drive the drainage tube 200 to draw in outside air, which can reduce the negative pressure in the drainage tube 200.
[0038] Therefore, the suction force of the drainage tube 200 on the inner wall of the heart can be reduced, and the suction time of the drainage tube 200 on the inner wall of the heart can be reduced. That is, the protective cover 20 can open the air inlet 15 when the drainage tube 200 is suctioning the inner wall of the heart, so as to reduce the suction of the drainage tube 200 on the inner wall of the heart, and prevent the drainage tube 200 from damaging the heart due to suctioning the inner wall of the heart, thereby improving the safety of using the intracardiac drainage device 1000.
[0039] The left ventricular drainage connection device 100 for preventing negative pressure according to an embodiment of the present invention, by setting the left ventricular drainage connection device 100 between the drainage tube 200 and the drainage pump 300, allows the drainage tube 200 to communicate with the outside when a certain negative pressure is generated in the left ventricular cavity, thereby preventing further suction of the heart wall. That is, it can reduce the suction of the drainage tube 200 on the heart wall and prevent the drainage tube 200 from damaging the heart due to suction of the heart wall, thereby improving the safety of the intracardiac drainage device 1000. In addition, since the protective box 10 is provided with a connector, the left ventricular drainage connection device 100 can be directly connected between the drainage tube 200 and the drainage pump 300 without modifying the existing drainage tube 200 and drainage pump 300. It is convenient to connect and use, has low manufacturing cost, and is easy to promote and apply.
[0040] like Figure 2 , Figure 3 , Figure 5 and Figure 7 As shown, according to some embodiments of the present invention, the protective cover 20 can be slidably connected to the protective box 10. For example, the protective cover 20 can be slidably connected to the protective box 10 in the vertical direction (e.g., ...). Figure 2 The protective cover 20 slides upwards (as shown in the up-down direction) so that it can automatically slide downwards under its own weight (as shown in the up-down direction). Figure 2 The movement (shown from top to bottom) can close the air inlet 15 and allow the protective cover 20 to be maintained in the closed position of the air inlet 15 under its own weight, thereby enabling the intracardiac drainage device 1000 to normally extract fluid from the heart and improve the stability of the intracardiac drainage device 1000.
[0041] When the drainage tube 200 clamps the inner wall of the heart and the protective cap 20 closes the air inlet 15, the drainage pump 300 can generate negative pressure within the drainage tube 200, allowing the protective cap 20 to overcome its own weight and move upwards under the action of negative pressure (e.g., Figure 2 The movement (shown in the bottom-up direction) can open the air inlet 15 to connect the drainage pipe 200 with the outside.
[0042] The drainage pump 300 can drive the drainage tube 200 to draw in outside air, so that the air pressure inside the drainage tube 200 is approximately the same as the outside air pressure. This allows the drainage tube 200 to immediately release the heart wall after adhering to it, until the protective cover 20 closes the air inlet 15 under its own weight. This allows the intracardiac drainage device 1000 to normally draw fluid from the heart and prevents the drainage tube 200 from damaging the heart due to clamping the heart wall, thus improving the safety of using the intracardiac drainage device 1000.
[0043] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, in some embodiments, the protective box 10 can be a box body surrounded by multiple walls 13. One wall 13 of the protective box 10 (such as the first wall 131) can be provided with an air inlet 15, and the wall 13 with the air inlet 15 can be the bottom wall of the protective box 10, such as... Figure 2 As shown, the left ventricular drainage connection device 100 can be arranged horizontally, that is, the bottom wall of the protective box 10 can be parallel to the horizontal plane, so that the protective cover 20 can be moved up and down (e.g., Figure 2 The up-down direction shown indicates that the air inlet 15 can be opened and closed, which helps to improve the smoothness of the movement of the protective cover 20 and the opening and closing of the air inlet 15.
[0044] Furthermore, such as Figure 3 As shown, the left ventricular drainage connection device 100 can be arranged at an angle, that is, the bottom wall of the protective box 10 can be inclined to the horizontal plane, and the protective cover 20 can be inclined relative to the protective box 10 in the vertical direction (e.g., Figure 3 Slide in the direction shown in the up and down direction. When the intracardiac drainage device 1000 is working normally, that is, when the drainage tube 200 can normally draw fluid from the heart and does not clamp the inner wall of the heart, the protective cover 20 can normally close the air inlet 15.
[0045] For example, the protective cover 20 can automatically tilt downwards under the influence of its own weight (e.g.) Figure 3 The movement shown in the lower right corner can close the air inlet 15 and allow the protective cover 20 to be maintained in the closed position of the air inlet 15 under the action of its own gravity, thereby enabling the intracardiac drainage device 1000 to normally extract fluid from the heart and improve the stability of the intracardiac drainage device 1000.
[0046] When the drainage tube 200 clamps the inner wall of the heart and the protective cap 20 closes the air inlet 15, the drainage pump 300 can generate negative pressure within the drainage tube 200, allowing the protective cap 20 to overcome its own weight under the negative pressure and move upward (e.g., Figure 3The movement (as shown in the upper left direction) can open the air inlet 15 to connect the drainage pipe 200 with the outside.
[0047] The drainage pump 300 can drive the drainage tube 200 to draw in outside air, so that the air pressure inside the drainage tube 200 is approximately the same as the outside air pressure. This allows the drainage tube 200 to immediately release the heart wall after adhering to it, until the protective cover 20 closes the air inlet 15 under its own gravity. This allows the intracardiac drainage device 1000 to normally draw fluid from the heart, prevents the drainage tube 200 from damaging the heart due to adhering to the heart wall, and improves the safety of using the intracardiac drainage device 1000.
[0048] By adjusting the orientation of the left ventricular drainage connection device 100, i.e., by adjusting the tilt angle of the bottom wall of the protective box 10 relative to the horizontal plane, the magnitude of the gravitational component of the protective cover 20 can be adjusted. Since the protective cover 20 needs to overcome its own weight or its own gravitational component under negative pressure to open the air inlet 15, the maximum force of the drainage tube 200 clamping the inner wall of the heart can be adjusted, and the sensitivity of the protective cover 20 in opening and closing the air inlet 15 can be adjusted. This can prevent the drainage tube 200 from damaging the heart due to clamping the inner wall of the heart, and can improve the safety of the intracardiac drainage device 1000.
[0049] Specifically, the operator can reduce the tilt angle of the bottom wall of the protective box 10 relative to the horizontal plane, which can increase the gravitational component of the protective cover 20. This will require the protective cover 20 to overcome its own gravity under greater negative pressure to open the air inlet 15. This can increase the maximum force of the drainage tube 200 clamping the inner wall of the heart, and reduce the sensitivity of the protective cover 20 in opening and closing the air inlet 15, until the bottom wall of the protective box 10 is parallel to the horizontal plane for easy placement. At this point, the protective cover 20 needs to completely overcome its own gravity to open the air inlet 15.
[0050] Alternatively, the operator can increase the tilt angle of the bottom wall of the protective box 10 relative to the horizontal plane, which can reduce the gravitational component of the protective cover 20. This allows the protective cover 20 to overcome its own gravity under a smaller negative pressure to open the air inlet 15, which can reduce the maximum force of the drainage tube 200 clamping the inner wall of the heart and increase the sensitivity of the protective cover 20 in opening and closing the air inlet 15. This can prevent the drainage tube 200 from damaging the heart due to clamping the inner wall of the heart and improve the safety of using the intracardiac drainage device 1000.
[0051] like Figure 2 and Figure 3As shown, according to some embodiments of the present invention, the protective box 10 may have a first wall portion 131, an air inlet 15 may be disposed on the first wall portion 131, and the first wall portion 131 may be the bottom wall of the protective box 10. The extending direction of the first wall portion 131 may be horizontal, i.e., as shown in the figure. Figure 2 As shown, the bottom wall of the protective box 10 can be parallel to the horizontal plane, so the protective cover 20 can be raised and lowered (e.g., ...). Figure 2 The up-down direction shown indicates that the air inlet 15 can be opened and closed, which helps to improve the smoothness of the movement of the protective cover 20 and the opening and closing of the air inlet 15.
[0052] Alternatively, the extension direction of the first wall portion 131 can be inclined to the horizontal direction, that is, the bottom wall of the protective box 10 can be inclined to the horizontal plane, and the protective cover 20 can be inclined to the vertical direction relative to the protective box 10 (e.g., Figure 3 Sliding in the direction shown (up and down), based on the fact that the protective cover 20 can move normally to open and close the air inlet 15, the operator can adjust the magnitude of the gravitational component of the protective cover 20 by adjusting the extension direction of the first wall 131. This allows for adjustment of the maximum force with which the drainage tube 200 clamps the inner wall of the heart, and also adjusts the sensitivity of the protective cover 20 in opening and closing the air inlet 15. This helps prevent the drainage tube 200 from damaging the heart due to clamping the inner wall of the heart, and also improves the safety of using the intracardiac drainage device 1000.
[0053] like Figure 2 , Figure 5 , Figure 7 and Figure 9 As shown, according to some embodiments of the present invention, the size of the protective cover 20 can be larger than the size of the air inlet 15, and the protective cover 20 can cover the air inlet 15 to close the air inlet 15, which can increase the contact area between the protective cover 20 and the protective box 10, and improve the sealing between the protective cover 20 and the protective box 10, thereby preventing outside air from entering the protective box 10 when the drainage tube 200 is normally drawing fluid from the heart, and ensuring the normal use of the intracardiac drainage device 1000.
[0054] like Figure 2 As shown, in some embodiments, the protective box 10 may have an air inlet pipe 14, which may be connected to an air inlet 15, and the air inlet pipe 14 may be located inside the protective box 10. The air inlet pipe 14 may be in a direction perpendicular to the wall portion 13 (such as the first wall portion 131) of the protective box 10 where the air inlet 15 is provided (e.g., Figure 2 Extending in the vertical direction (as shown), the protective cover 20 can be installed inside the air intake pipe 14, and the protective cover 20 can be slidably connected to the air intake pipe 14, which can limit the sliding of the protective cover 20 and improve the stability of the sliding of the protective cover 20.
[0055] The protective cover 20 can extend along the direction of the intake pipe 14 (e.g., Figure 2 The protective cover 20 can slide down automatically under its own weight (as shown in the up-down direction), allowing it to slide downwards (as shown in the up-down direction). Figure 2 The movement (as shown in the top-to-bottom direction) closes the air inlet 15, and allows the protective cover 20 to be maintained in the closed position of the air inlet 15 under its own weight, thereby enabling the intracardiac drainage device 1000 to normally extract fluid from the heart and improving the stability of the intracardiac drainage device 1000 in operation.
[0056] Among them, the side of the intake pipe 14 closest to the intake port 15 (e.g.) Figure 2 The lower side (as shown) may have a notch 142, and the protective cover 20 may be upward (as shown). Figure 2 The pump 300 moves in the direction shown (from bottom to top) to connect the notch 142 with the air inlet 15. When the drainage tube 200 clamps the inner wall of the heart and the protective cover 20 closes the air inlet 15, the drainage pump 300 can generate negative pressure in the drainage tube 200, allowing the protective cover 20 to overcome its own weight and move upward (as shown in the diagram). Figure 2 The movement (shown in the bottom-up direction) opens the air inlet 15 so that the drainage tube 200 is connected to the air inlet 15 through the notch 142.
[0057] The drainage pump 300 can drive the drainage tube 200 to draw in outside air, so that the air pressure inside the drainage tube 200 is approximately the same as the outside air pressure. This allows the drainage tube 200 to immediately release the heart wall after adhering to it, until the protective cover 20 closes the air inlet 15 under its own weight. This allows the intracardiac drainage device 1000 to normally draw fluid from the heart and prevents the drainage tube 200 from damaging the heart due to clamping the heart wall, thus improving the safety of using the intracardiac drainage device 1000.
[0058] like Figure 2 , Figure 4 , Figure 5 and Figure 6 As shown, in some embodiments, the outer periphery of the protective cover 20 may have a groove 21, and the inner wall of the air intake pipe 14 may have a slider 141, the slider 141 being able to extend along the extension direction of the air intake pipe 14 (e.g., Figure 2 Extending in the vertical direction as shown, and the slider 141 can slide and engage with the groove 21, which can improve the reliability of the sliding of the protective cover 20. Alternatively, the outer periphery of the protective cover 20 can have a slider 141, and the inner wall of the air intake pipe 14 can have a groove 21, with the slider 141 sliding and engaging with the groove 21.
[0059] like Figure 7As shown, in some embodiments, the protective box 10 may have multiple baffles 17, each baffle 17 being arranged in a direction perpendicular to the wall portion 13 (such as the first wall portion 131) of the protective box 10 where the air inlet 15 is provided (e.g., Figure 7 The protective cover 20 extends in the vertical direction shown, and multiple baffles 17 can be located inside the protective box 10. Multiple baffles 17 can be set on the outer periphery of the air inlet 15. The protective cover 20 can be set between multiple baffles 17, and the protective cover 20 can be slidably connected to multiple baffles 17 respectively, which can limit the sliding of the protective cover 20 and improve the stability of the sliding of the protective cover 20.
[0060] The protective cover 20 can extend along the direction of the baffle 17 (e.g., Figure 7 The protective cover 20 can slide down automatically under its own weight (as shown in the up-down direction), allowing it to slide downwards (as shown in the up-down direction). Figure 7 The movement (as shown in the top-to-bottom direction) closes the air inlet 15, and allows the protective cover 20 to be maintained in the closed position of the air inlet 15 under its own weight, thereby enabling the intracardiac drainage device 1000 to normally extract fluid from the heart and improving the stability of the intracardiac drainage device 1000 in operation.
[0061] Multiple baffles 17 can be arranged at intervals along the circumference of the air inlet 15, such that there can be a gap between two adjacent baffles 17, and the protective cover 20 can face upwards (e.g., Figure 7 The movement (as shown in the bottom-up direction) allows the gap to communicate with the air inlet 15. When the drainage tube 200 clamps the inner wall of the heart and the protective cap 20 closes the air inlet 15, the drainage pump 300 can generate negative pressure within the drainage tube 200, allowing the protective cap 20 to overcome its own weight and move upward (as shown in the bottom-up direction) under the action of negative pressure. Figure 7 The movement (shown in the bottom-up direction) opens the air inlet 15 so that the drain pipe 200 communicates with the air inlet 15 through the gap between two adjacent baffles 17.
[0062] The drainage pump 300 can drive the drainage tube 200 to draw in outside air, so that the air pressure inside the drainage tube 200 is approximately the same as the outside air pressure. This allows the drainage tube 200 to immediately release the heart wall after adhering to it, until the protective cover 20 closes the air inlet 15 under its own weight. This allows the intracardiac drainage device 1000 to normally draw fluid from the heart and prevents the drainage tube 200 from damaging the heart due to clamping the heart wall, thus improving the safety of using the intracardiac drainage device 1000.
[0063] like Figure 8As shown, in some embodiments, the outer edge of the protective cover 20 may have multiple mating grooves 22. The multiple mating grooves 22 may be arranged at intervals along the circumference of the protective cover 20, and the multiple mating grooves 22 may correspond one-to-one with multiple baffles 17. The mating grooves 22 may extend along the extending direction of the baffles 17, and the mating grooves 22 may slide with the baffles 17, which can limit the sliding of the protective cover 20, improve the reliability of the sliding of the protective cover 20, and improve the stability of the sliding of the protective cover 20.
[0064] like Figure 5 and Figure 6 As shown, in some embodiments, the protective box 10 may also have a guide post 16, which may be located inside the protective box 10, with one end of the guide post 16 (e.g., Figure 5 The upper end shown can be connected to the protective box 10, and the other end of the guide post 16 (as shown) can be connected to the protective box 10. Figure 5 The lower end shown can be directed towards the air intake 15 (e.g.) Figure 5 Extending from top to bottom (as shown), the protective cover 20 and the guide post 16 can slide together, which can improve the limiting effect of the protective cover 20, improve the sliding reliability and stability of the protective cover 20, improve the guiding effect of the protective cover 20, and improve the smoothness of the sliding of the protective cover 20.
[0065] According to some embodiments of this utility model, the protective cover 20 can be rotatably connected to the protective box 10, such as... Figure 9 As shown, the protective cover 20 can be positioned relative to the protective case 10 at... Figure 9 From the perspective shown, the protective cover 20 can rotate clockwise or counterclockwise. For example, the protective cover 20 can automatically rotate clockwise under its own weight, which can close the air inlet 15. The protective cover 20 can also be maintained in the closed air inlet 15 position under its own weight, thereby enabling the intracardiac drainage device 1000 to normally extract fluid from the heart and improve the stability of the intracardiac drainage device 1000.
[0066] When the drainage tube 200 clamps the inner wall of the heart and the protective cover 20 closes the air inlet 15, the drainage pump 300 can generate negative pressure inside the drainage tube 200. This allows the protective cover 20 to overcome its own weight and rotate counterclockwise under the negative pressure, opening the air inlet 15 and connecting the drainage tube 200 to the outside. The drainage pump 300 can then drive the drainage tube 200 to draw in outside air, making the air pressure inside the drainage tube 200 approximately the same as the outside air pressure. This allows the drainage tube 200 to immediately release the inner wall of the heart after clamping it, until the protective cover 20 closes the air inlet 15 under its own weight. This ensures that the intracardiac drainage device 1000 can normally extract fluid from the heart and prevents damage to the heart caused by the drainage tube 200 clamping the inner wall, thus improving the safety of the intracardiac drainage device 1000.
[0067] like Figure 9 As shown, in some embodiments, the left ventricular drainage connection device 100 may further include a torsion spring 30. The protective cover 20 and the protective box 10 can be rotatably connected via a rotating shaft 40. The torsion spring 30 can be sleeved on the rotating shaft 40, and both ends of the torsion spring 30 can contact the protective cover 20 and the protective box 10 respectively. When the drainage tube 200 clamps the inner wall of the heart and the protective cover 20 closes the air inlet 15, the drainage pump 300 can generate negative pressure in the drainage tube 200, so that the protective cover 20 can be in negative pressure. Under the action of the spring force of the torsion spring 30, the tube rotates in the counterclockwise direction and opens the air inlet 15. At the same time, the torsion spring 30 can undergo elastic deformation and store force. Furthermore, the drainage tube 200 can immediately loosen the inner wall of the heart when the protective cover 20 opens the air inlet 15. At this time, the torsion spring 30 can return to its initial shape to drive the protective cover 20 to close the air inlet 15. This can ensure that the drainage tube 200 draws fluid from the heart and ensure that the intracardiac drainage device 1000 works normally.
[0068] Other configurations and operations of the left ventricular drainage connection device 100 for preventing negative pressure according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here. In the description of the present invention, "first feature" and "second feature" may include one or more of the features. The vertical, horizontal, and front-back directions are defined as shown in the figures.
[0069] In the description of this utility model, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features not in direct contact but through another feature between them. Moreover, "above," "over," and "on top" of the second feature include the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature.
[0070] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0071] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.
Claims
1. A left ventricular drainage connection device for preventing negative pressure, used in an intracardiac drainage system, the intracardiac drainage system comprising a drainage tube and a drainage pump, characterized in that, The left ventricular drainage connection device includes: The protective box has a first connector and a second connector, the first connector being used to connect the drainage pump, the second connector being used to connect the drainage tube, and the protective box having an air inlet. A protective cover, located inside and movably connected to the protective box, is used to open and close the air inlet. The intracardiac drainage device is adapted to draw fluid from the heart when the air inlet is closed by the protective cover, and the protective cover is adapted to open the air inlet when negative pressure is generated in the drainage tube, so as to connect the drainage tube with the outside.
2. The left ventricular drainage connection device for preventing negative pressure according to claim 1, characterized in that, The protective cover is slidably connected to the protective box. The size of the protective cover is larger than the size of the air inlet, and the protective cover is adapted to cover the air inlet to close the air inlet.
3. The left ventricular drainage connection device for preventing negative pressure according to claim 2, characterized in that, The protective box has an air inlet pipe that communicates with the air inlet and is located inside the protective box. The air inlet pipe extends along a direction perpendicular to the wall portion of the protective box where the air inlet is located. The protective cover is disposed inside the air inlet pipe and is slidably connected to the air inlet pipe. The air intake pipe has a notch on the side near the air inlet, and the protective cover is adapted to open the air inlet so that the drainage pipe can communicate with the air inlet through the notch.
4. The left ventricular drainage connection device for preventing negative pressure according to claim 3, characterized in that, The outer periphery of the protective cover and one of the inner walls of the air intake pipe have a sliding groove, and the other of the outer periphery of the protective cover and the inner wall of the air intake pipe have a slider, which slides in conjunction with the sliding groove.
5. The left ventricular drainage connection device for preventing negative pressure according to claim 2, characterized in that, The protective box has multiple baffles, each baffle extending perpendicularly to the wall portion of the protective box where the air inlet is located and situated within the protective box. The multiple baffles are located on the outer periphery of the air inlet and are adapted to be spaced apart circumferentially along the air inlet. The protective cover is disposed between the multiple baffles and is slidably connected to each of the multiple baffles. The protective cover is adapted to open the air inlet so that the drainage tube communicates with the air inlet through the gap between two adjacent baffles.
6. The left ventricular drainage connection device for preventing negative pressure according to claim 5, characterized in that, The outer edge of the protective cover has multiple mating grooves, which are arranged at intervals along the circumference of the protective cover and correspond one-to-one with the multiple baffles. The mating grooves and the baffles are slidably engaged.
7. The left ventricular drainage connection device for preventing negative pressure according to any one of claims 2-6, characterized in that, The protective box also has a guide post located inside the protective box. One end of the guide post is connected to the protective box, and the other end of the guide post extends toward the air inlet. The protective cover is slidably engaged with the guide post.
8. The left ventricular drainage connection device for preventing negative pressure according to claim 1, characterized in that, The protective cover is rotatably connected to the protective box. The size of the protective cover is larger than the size of the air inlet, and the protective cover is adapted to cover the air inlet to close the air inlet.
9. The left ventricular drainage connection device for preventing negative pressure according to claim 8, characterized in that, Also includes: A torsion spring is provided, wherein the protective cover and the protective box are rotatably connected by a rotating shaft, the torsion spring is sleeved on the rotating shaft, and the two ends of the torsion spring are in contact with the protective cover and the protective box, respectively.
10. The left ventricular drainage connection device for preventing negative pressure according to claim 1, characterized in that, The protective box has a first wall portion, and the air inlet is located on the first wall portion. The first wall portion extends in a direction inclined to the horizontal.