ECMO blood flow intersection plane visualization device

The ECMO blood flow confluence plane visualization device, which integrates components such as a mobile support, guide rail, X-ray probe, and imaging system, solves the problem of monitoring the blood flow confluence plane during ECMO treatment, and achieves real-time and accurate blood flow confluence monitoring, thereby improving the safety and convenience of treatment.

CN120983064AInactive Publication Date: 2025-11-21THE SECOND AFFILIATED HOSPITAL OF ZHEJIANG UNIV OF TRADITIONAL CHINESE MEDICINE (ZHEJIANG XINHUA HOSPITAL)
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Patent Information

Application Number
CN202511307679.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-09-15
Publication Date
2025-11-21
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

Existing ECMO technology in venous-arterial mode has difficulty in achieving real-time and accurate monitoring of the plane where the blood output from the heart meets the reverse blood flow of ECMO. This can lead to risks such as increased left ventricular pressure and cardiac arrest if the blood flow is not set properly.

Method used

An ECMO blood flow convergence visualization device was designed, comprising components such as a movable support, guide rail, rodless cylinder, telescopic rod, X-ray probe, and display device. Combined with lead cloth protection, it enables real-time monitoring and precise positioning of blood flow convergence.

Benefits of technology

It improves the monitoring accuracy and safety of ECMO treatment, simplifies the equipment installation and disassembly process, reduces the harm of X-rays to patients and the environment, ensures treatment effectiveness and prevents complications.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention relates to the technical field of medical instruments, in particular to an ECMO blood flow intersection plane visualization device. The guide rails are vertically arranged on the movable support at intervals, at least two movable blocks are arranged on each guide rail in a sliding mode, a rodless air cylinder is installed between every two vertically-opposite movable blocks, an extension sleeve is arranged on a sliding block of each rodless air cylinder, telescopic rods are arranged in the extension sleeves in a sliding mode, and X-ray probes used for monitoring the intersection situation are arranged at the front ends of the telescopic rods; the top of the movable support is provided with imaging instruments matched with the X-ray probes in number, and the imaging instruments are electrically connected with the X-ray probes. By integrating the X-ray probe, the imaging instrument and other components, real-time monitoring of the blood flow intersection condition is achieved, the design helps a doctor to more scientifically adjust ECMO setting, the treatment effect is improved, complications are prevented, meanwhile, by means of the flexibility provided by the multiple adjusting pieces, the X-ray probe and the imaging instrument can be accurately positioned to the position needing to be monitored, and the monitoring accuracy is improved. And the monitoring precision is greatly improved.
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Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a visualization device for ECMO blood flow convergence plane. Background Technology

[0002] Extracorporeal membrane oxygenation (ECMO) technology, as a key support measure for patients with severe cardiopulmonary failure, provides oxygen to the blood and removes carbon dioxide through extracorporeal circulation, thereby replacing cardiopulmonary function to a certain extent and allowing the heart and lungs to get the necessary rest and recovery. Especially when using venous-arterial mode (VA mode), accurately determining the position of the intersection of the blood pumped by the heart and the reverse blood flow of ECMO is particularly important as the patient's own cardiac function begins to gradually recover.

[0003] However, current clinical practice faces significant challenges in real-time monitoring of the exact location of this junction. Due to limitations imposed by rib structure and the complexity of blood imaging, direct and continuous observation of this junction is difficult, forcing physicians to rely heavily on personal experience for estimation. This lack of reliability and accuracy is evident for patients undergoing VA-ECMO treatment. Especially in patients without a spontaneous heartbeat, improper ECMO blood flow settings can lead to increased left ventricular pressure, increasing the risk of aortic valve failure and potentially causing cardiac arrest again. Therefore, existing ECMO technology, particularly in VA mode, reveals its limitations in precise monitoring, namely the inability to accurately monitor the junction between cardiac output and ECMO reverse flow in real time.

[0004] Therefore, it is particularly urgent to develop an ECMO blood flow confluence plane visualization device, which will help overcome the limitations of existing technologies and provide a more accurate and easy-to-operate monitoring solution to better meet clinical needs. Summary of the Invention

[0005] To overcome the shortcomings of the prior art, the present invention provides an ECMO blood flow confluence plane visualization device.

[0006] The technical implementation of this invention is as follows: an ECMO blood flow confluence plane visualization device, comprising: Bed frame; A movable support frame is placed beside the bed. Guide rails are set at intervals on the movable support. At least two moving blocks slide on each guide rail. A rodless cylinder is installed between the two opposing moving blocks. An extension sleeve is set on the slider of the rodless cylinder. A telescopic rod slides inside the extension sleeve. An X-ray probe for monitoring the convergence is set at the front end of the telescopic rod. An imager adapted to the number of X-ray probes is installed on the top of the movable support. The imager is electrically connected to the X-ray probes and is used to display the blood flow convergence. The mounting frame is set on the movable bracket. There are fixed rods on both sides of the inner wall of the mounting frame. There are turntables on both sides of the fixed rods. There is a connecting shaft between the two turntables. Lead cloth is wound on the connecting shaft and the end of the lead cloth passes through the mounting frame.

[0007] More preferably, it also includes a first connecting rod, which is provided on the top of the movable support, and a second connecting rod is hinged to the top of the first connecting rod, and the top of the second connecting rod is hinged to the display.

[0008] More preferably, it also includes a spiral spring, with a spiral spring provided between the turntable and the corresponding fixed rod.

[0009] More preferably, it also includes a guide frame set at the rear end of each telescopic rod, with locking balls sliding vertically at intervals inside the guide frame, and an elastic element set between two locking balls on the same guide frame, and the locking balls sliding through the corresponding telescopic rod. Insert holes adapted to engage with the locking balls on the same side are arranged on both sides of the extension sleeve to fix the position of the telescopic rod.

[0010] More preferably, it also includes positioning frames that slide through both sides of the mounting frame. The surfaces of the two turntables are provided with slots that fit the bottom of the positioning frame on the same side. A crossbar is provided between the two positioning frames. Two elastic elements are provided between the two ends of the crossbar and the mounting frame and are sleeved on the corresponding positioning frames. A locking rod is provided at the bottom of one of the rodless cylinders. A top block is provided at the front middle of the crossbar that contacts and abuts against the locking rod.

[0011] More preferably, it also includes buckles symmetrically arranged at the ends of the lead cloth, which fit together with the side of the bed frame to fix the position of the lead cloth.

[0012] More preferably, it also includes support rods spaced vertically on one side of the bed, and a guide frame facing the support rods is provided on the movable support. The guide frame has a cavity inside that matches the layout of the support rods, and the support rods slide in conjunction with the adjacent cavity.

[0013] More preferably, it also includes symmetrically sliding dials on the guide frame, with an elastic element three between the dials and the guide frame, and a sliding insert rod that passes through the guide frame on the side of the dials that are far apart from each other. The insert rod is inserted into and cooperates with the support rod on the same side to fix the position between the support rod and the guide frame.

[0014] More preferably, it also includes a baffle frame disposed at the bottom of the front end of each extension sleeve, the baffle frame having an opening on its front side, and a sealing plate disposed on each X-ray probe that matches the opening of the adjacent baffle frame, for sealing the baffle frame space to block the corresponding X-ray probe.

[0015] More preferably, it also includes sliding sleeves on both sides of the front of the guide rail, with a U-shaped plate that slides between the two sliding sleeves to abut against the lead cloth, and a load-bearing block on both sides of the top of the U-shaped plate.

[0016] Compared with the prior art, the present invention has the following advantages: 1. This invention integrates components such as a mobile support, guide rail, rodless cylinder, telescopic rod, X-ray probe, and imaging device to achieve real-time monitoring of blood flow convergence. This design helps doctors adjust ECMO settings more scientifically, thereby improving treatment effectiveness and preventing complications. At the same time, thanks to the flexibility provided by multiple adjustment components, both the X-ray probe and imaging device can be accurately positioned to the monitoring site, greatly improving monitoring accuracy. In addition, to ensure safety and prevent X-rays from harming the surrounding environment and personnel, lead cloth is specially used for protection.

[0017] 2. The present invention utilizes the design of the top block and positioning frame to ensure that the lead cloth can be firmly fixed after being pulled during use, thus ensuring that the accuracy of the monitoring process is not affected.

[0018] 3. This invention achieves precise docking between the bed and the mobile support through the ingenious combination of the guide frame and the support rod. This not only simplifies the installation process but also facilitates the disassembly and reassembly of the equipment, improving the overall ease of use and flexibility. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0020] Figure 2 This is a three-dimensional structural diagram of the moving block, rodless cylinder, and extension sleeve of the present invention.

[0021] Figure 3 This is a three-dimensional structural cross-sectional view of the guide frame, ball retainer, and elastic element of the present invention.

[0022] Figure 4 This is a three-dimensional structural diagram of the components such as the mounting frame, lead cloth, and buckle plate of the present invention.

[0023] Figure 5 For the present invention Figure 4 A magnified structural diagram of part A in the middle.

[0024] Figure 6 This is a three-dimensional structural cross-sectional view of the turntable, connecting shaft, and lead cloth components of the present invention.

[0025] Figure 7 This is a three-dimensional structural cross-sectional view of the crossbar, positioning frame, and elastic element of the present invention.

[0026] Figure 8 This is a three-dimensional structural diagram of the support rod, guide frame, and lever plate of the present invention.

[0027] Figure 9 This is a three-dimensional structural cross-sectional view of the components of the present invention, including the dial plate, the elastic element, and the insertion rod.

[0028] Figure 10 This is a three-dimensional structural diagram of the extension sleeve, telescopic rod, X-ray probe, baffle frame, and sealing plate of the present invention.

[0029] Figure 11 This is a three-dimensional structural diagram of the guide rail, lead cloth, sliding sleeve, U-shaped plate, and load-bearing block of the present invention.

[0030] The above-mentioned attached drawings include the following reference numerals: 1. Bed body; 2. Movable support; 3. Guide rail; 31. Movable block; 32. Rodless cylinder; 33. Extension sleeve; 331. Insertion hole; 34. Telescopic rod; 341. Guide frame; 342. Ball bearing; 343. Elastic element one; 35. X-ray probe; 36. Link one; 37. Link two; 38. Imager; 4. Mounting frame; 41. Fixed rod; 42. 421. Turntable, 43. Slot, 44. Scroll spring, 45. Connecting shaft, 46. Lead cloth, 47. Buckle plate, 48. Crossbar, 49. Top block, 40. Positioning frame, 41. Elastic element two, 42. Locking rod, 50. Support rod, 51. Guide frame, 52. Paddle plate, 521. Elastic element three, 53. Insert rod, 60. Baffle frame, 61. Enclosing plate, 72. Sliding sleeve, 73. U-shaped plate, 74. Load block. Detailed Implementation

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Example: A visualization device for the confluence of blood flow in an ECMO machine, such as... Figures 1-4 , Figure 6 and Figure 7 As shown, it includes: Bed 1, for patients to use while lying flat; The mobile support 2 is placed beside the bed 1 for easy operation by medical staff; Two guide rails 3 are provided, fixedly positioned vertically at an interval on the front side of the movable support 2. Three movable blocks 31 slide on each guide rail 3, allowing them to slide left and right along their respective guide rails. A rodless cylinder 32 is fixedly installed between two vertically opposite movable blocks 31. An extension sleeve 33 is mounted on the slider of the rodless cylinder 32. The extension sleeve 33 extends forward and is hollow internally, moving with the corresponding slider in a lifting motion. A telescopic rod 34 slides inside the extension sleeve 33. Pulling the telescopic rod 34 extends the corresponding extension sleeve 33, facilitating subsequent instrument position adjustments. An X-ray probe 35 for monitoring intersection is fixedly mounted at the front end of each telescopic rod 34. The X-ray probe 35, as the main monitoring component, utilizes its penetrating power to monitor blood flow in real time through the patient's bones after activation. A first connecting rod 36 is installed at the top of the movable support 2. A second connecting rod 37 is hinged to the top of the first connecting rod 36. An imager 38, matching the number of X-ray probes 35, is hinged to the top of the second connecting rod 37. To ensure that the second connecting rod 37 can be stably positioned at different angles relative to the first connecting rod 36 and the imager 38, and can move smoothly and slowly during adjustment, damping devices are installed at the hinge points of the second connecting rod 37 and the first connecting rod 36, and at the hinge points of the second connecting rod 37 and the imager 38. The damping devices prevent the components from swinging rapidly and uncontrollably, while allowing the operator to precisely adjust the angle and position of the imager 38 as needed. The imaging device 38 is electrically connected to the X-ray probe 35. The X-ray probe 35 projects the monitoring information onto the corresponding imaging device 38. By utilizing the imaging function of the imaging device 38, the real-time monitoring of blood flow intersection can be quickly obtained, which significantly enhances the visibility and flexibility during the treatment process to ensure subsequent treatment. More importantly, the technology used in this embodiment is a common technique in medical imaging called angiography. This process requires the use of a contrast agent. This medical procedure should be performed by professional medical personnel, taking into account the individual patient's condition and potential risk factors. It is crucial to ensure that the patient does not experience any allergic reactions or other adverse reactions to the contrast agent before administering the injection. The contrast agent enhances the contrast between the target tissue or blood vessel and the surrounding structures, making it more visible under X-rays. As blood containing the contrast agent flows through various parts of the body, it is irradiated by an X-ray probe 35, which captures images in real time. Utilizing the penetrating power of X-rays and the contrast agent's imaging effect, the course, morphology, and lesions of blood vessels can be clearly displayed. The resulting images are then displayed on a connected imaging device 38 for real-time monitoring of blood flow, thus effectively ensuring the safety and effectiveness of the medical procedure.

[0033] The mounting frame 4 is set on the movable bracket 2. The mounting frame 4 has a fixing rod 41 on both the left and right inner walls. The fixing rods 41 on both sides have a rotating turntable 42. The turntable 42 and the corresponding fixing rod 41 are provided with a spiral spring 43. The two turntables 42 are also provided with a connecting shaft 44. Lead cloth 45 is wound on the connecting shaft 44. The end of the lead cloth 45 passes through the mounting frame 4. The pull-out lead cloth 45 design allows it to cover and shield the patient's body when the X-ray probe 35 is actually used, thereby protecting the patient.

[0034] like Figure 3 As shown, it also includes a guide frame 341 set at the rear end of each telescopic rod 34. A retaining ball 342 slides vertically and vertically within the guide frame 341. An elastic element 343 is set between two retaining balls 342 on the same guide frame 341. The elastic element 343 is a spring. The retaining ball 342 slides through the corresponding telescopic rod 34. Insertion holes 331 are arranged on both the upper and lower sides of the extension sleeve 33 to engage with the retaining balls 342 on the same side, so as to fix the position of the telescopic rod 34. When the telescopic rod 34 is pulled, the retaining ball 342 placed inside it will move accordingly. As it moves, the retaining ball 342 will continuously contact the successive insertion holes 331, causing the elastic element 343 to be squeezed and deformed until the telescopic rod 34 stops moving. Under the restoring force of the elastic element 343, the retaining ball 342 can be inserted into the corresponding insertion hole 331, thereby fixing the position of the telescopic rod 34 after displacement.

[0035] like Figure 4 , Figure 5 and Figure 7 As shown, it also includes positioning frames 462 that slide through the left and right sides of the mounting frame 4. The positioning frame 462 consists of a frame body and positioning blocks connected to the bottom of the frame body. The frame body is responsible for passing through the mounting frame 4 and forming a sliding operation in the up and down direction. The positioning blocks can be inserted into the corresponding parts to form a locking and fixing according to the movement of the frame body. The surfaces of the turntables 42 on both sides are provided with slots 421 that are circumferentially spaced to fit the positioning blocks at the bottom of the positioning frames 462 on the same side. A crossbar 46 is provided between the two positioning frames 462. The crossbar 46 fixes the positioning frames 462 on both sides together. The left and right ends of the crossbar 46 are provided with elastic elements 463 that are sleeved on the corresponding positioning frames 462 between the mounting frame 44 and the left and right ends of the crossbar 46. The elastic elements 463 are compression springs. A locking rod 47 is provided at the bottom of the rodless cylinder 32. A top block 461 is provided at the middle of the front side of the crossbar 46 that contacts and abuts against the locking rod 47. The left and right sides of the top block 461 have downward inclined slopes.

[0036] For details, see Figure 5When the locking rod 47 abuts against the top block 461, the positioning frames 462 on both sides are in a suspended state, and the elastic element 463 is in a stretching tendency, that is, the positioning frame 462 is not locked with the turntable 42. From this point on, when the locking rod 47 separates from the top block 461, the elastic element 463 is released from its restraint and returns to its original position. The crossbar 46 moves smoothly under the force of the elastic element 463, then slides down and simultaneously drives the positioning frames 462 on both sides into the mounting frame 4, and uses the positioning blocks at the bottom of the positioning frames 462 to... The corresponding slot 421 on the turntable 42 is fixed to fix the position of the lead cloth 45 after it is pulled. In addition, when the locking rod 47 contacts the top block 461, that is, when the positioning frame 462 needs to be pulled upward to reset, the locking rod 47 moves horizontally with the rodless cylinder 32 and contacts the inclined surface of the top block 461. It gradually fits the top block 461 in accordance with the inclination trend of the inclined surface. The elastic element 463 gradually stretches and deforms in accordance with the operation, thereby restoring the contact state between the locking rod 47 and the top block 461, thus completing the reset.

[0037] like Figure 4 and Figure 6 As shown, it also includes buckles 451 symmetrically arranged at the ends of the lead cloth 45. The buckles 451 are properly fitted to the side of the bed frame 1 to fix the position of the lead cloth 45.

[0038] like Figure 8 and Figure 9 As shown, it also includes support rods 5 fixedly installed at intervals on the rear side of the bed body 1. The end of the support rod 5 is provided with a slot for locking. A guide frame 51 facing the support rod 5 is provided on the movable bracket 2. The guide frame 51 has a cavity inside that is adapted to the layout of the support rod 5. The support rod 5 slides with the adjacent cavity and can be inserted into the corresponding cavity.

[0039] like Figure 8 and Figure 9 As shown, it also includes two symmetrically sliding dials 52 on the guide frame 51. An elastic element 521, which is a spring, is provided between the dials 52 and the guide frame 51. A sliding insertion rod 53 is provided on the side of the dials 52 that is far apart from each other, passing through the guide frame 51. The front side of the end of the insertion rod 53 is inclined. During the process of the support rod 5 being inserted into the guide frame 51, it will simultaneously contact the adjacent insertion rod 53 and move in accordance with the inclined surface. The elastic element 521 deforms accordingly, thereby reserving space for the support rod 5 to move until the support rod 5 moves to the end of the inclined surface. The slots of the support rods 5 on both sides are located directly above or below the corresponding insertion rod 53. Under the reset force of the elastic element 521, the insertion rod 53 can be inserted into the corresponding slot. The insertion rod 53 and the support rod 5 on the same side are thus connected and engaged to fix the position between the support rod 5 and the guide frame 51.

[0040] like Figure 10 As shown, it also includes a baffle 6 disposed at the bottom of the front end of each extension sleeve 33. The baffle 6 is a lead frame with an opening on the front side. A sealing plate 61 that matches the opening of the adjacent baffle 6 is disposed on each X-ray probe 35 to close the space of the baffle 6 and block the corresponding X-ray probe 35.

[0041] like Figure 11 As shown, it also includes sliding sleeves 7 on the left and right sides of the front part of the guide rail 3. A U-shaped plate 71 that abuts against the lead cloth 45 is slidably arranged between the two sliding sleeves 7. A load block 72 is provided on both sides of the top of the U-shaped plate 71, which can shape and fix the position of the lead cloth 45 after it is pulled.

[0042] First, place the bed 1 in a suitable position and position the movable support 2 beside it for medical staff to operate and observe. Next, push the movable support 2 to bring the guide frame 51 close to the support rod 5. The support rod 5 will then enter the corresponding chamber of the guide frame 51 and contact the insertion rod 53. As the support rod 5 compresses the insertion rod 53, it pushes the connecting plates 52 on both sides to slide closer together on the guide frame 51. The elastic element 521 deforms accordingly until the insertion rod 53 is fully inserted into the corresponding support rod 5, completing the fixation and achieving docking between the bed 1 and the movable support 2. Before monitoring, assess the patient's condition. Once the patient's condition meets the standards, ensure the patient undergoing ECMO treatment is lying flat on the bed 1, and then administer the specially formulated contrast agent. Then, the lead cloth 45 is pulled out, and the lead cloth 45 is pulled out from the mounting frame 4, which in turn drives the connecting shaft 44 and the turntable 42 to rotate. The spiral spring 43 deforms accordingly until the lead cloth 45 reaches the required length. Then, the buckle plate 451 can be used to fix the end of the lead cloth 45 to the edge of the bed frame 1. Next, the U-shaped rod is pushed down so that it rests on top of the lead cloth 45. Due to the action of the weight block 72, the pulled-out end of the lead cloth 45 is subjected to a downward force, thereby forming an arc-shaped barrier and covering the patient.

[0043] Next, it is necessary to release the locking rod 47 from the top block 461. By pushing the rodless cylinder 32 with the locking rod 47, the locking rod 47 is disengaged from the top block 461. Then, the crossbar 46 is no longer restricted by the locking rod 47, and under the elastic force of the elastic element 463, the crossbar 46 descends. The positioning frame 462 connected to it moves down synchronously and is locked into the corresponding slot 421 on the turntable 42, thereby locking the position of the lead cloth 45. Then, the position of the X-ray probe 35 can be adjusted. By pushing the position of the rodless cylinder 32, the corresponding moving block 31 slides along the guide rail 3, precisely transferring the X-ray probe 35 above the area to be monitored. Then, by pulling the telescopic rod 34, the extension position of the X-ray probe 35 is adjusted. At the same time, as the X-ray probe 35 moves, the connected sealing plate 61 and the baffle 6 are separated synchronously to ensure that the X-ray irradiator can be completely irradiated. Then, the positions of the first connecting rod 36 and the second connecting rod 37 are adjusted to adjust the display position of the imager 38 accordingly. After ensuring that all preparatory operations are completed, the X-ray probe 35 can be started and aimed at the target area of ​​the patient to observe the convergence of blood flow. By viewing the real-time image of the imager 38, the convergence can be fully displayed for subsequent treatment follow-up.

[0044] As can be seen, the whole process is simple and easy to implement, and the results are accurate and reliable, making it suitable for efficient monitoring.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. An ECMO blood flow confluence plane visualization device, comprising: Bed body (1); Its feature is that it also includes: a movable support (2) placed on the side of the bed body (1); A guide rail (3) is set on the movable support (2) at intervals. At least two moving blocks (31) slide on the guide rail (3). A rodless cylinder (32) is installed between the two moving blocks (31) that are opposite each other. An extension sleeve (33) is provided on the slider of the rodless cylinder (32). A telescopic rod (34) slides inside the extension sleeve (33). An X-ray probe (35) for monitoring the convergence is provided at the front end of the telescopic rod (34). A display (38) is installed on the top of the movable support (2) to match the number of X-ray probes (35). The display (38) is electrically connected to the X-ray probes (35) and is used to display the convergence of blood flows. The mounting frame (4) is set on the movable bracket (2). The inner walls of the mounting frame (4) are provided with fixing rods (41) on both sides. Turntables (42) rotate on both sides of the fixing rods (41). A connecting shaft (44) is provided between the two turntables (42). Lead cloth (45) is wound on the connecting shaft (44). The end of the lead cloth (45) passes through the mounting frame (4).

2. The ECMO blood flow confluence plane visualization device according to claim 1, characterized in that, It also includes a first connecting rod (36), which is provided on the top of the movable support (2). The top of the first connecting rod (36) is hinged to a second connecting rod (37), and the top of the second connecting rod (37) is hinged to the display (38).

3. The ECMO blood flow confluence plane visualization device according to claim 2, characterized in that, It also includes a spiral spring (43), which is provided between the turntable (42) and the corresponding fixed rod (41).

4. The ECMO blood flow confluence plane visualization device according to claim 3, characterized in that, It also includes a guide frame (341) disposed at the rear end of each of the telescopic rods (34), wherein a locking ball (342) is slidably spaced up and down inside the guide frame (341), and an elastic element (343) is disposed between two locking balls (342) on the same guide frame (341), and the locking ball (342) slides through the corresponding telescopic rod (34). Insertion holes (331) that are adapted to engage with the locking ball (342) on the same side are arranged on both sides of the extension sleeve (33) to fix the position of the telescopic rod (34).

5. The ECMO blood flow confluence plane visualization device according to claim 4, characterized in that, It also includes positioning frames (462) that slide through both sides of the mounting frame (4). The surfaces of the turntables (42) on both sides are provided with slots (421) that fit with the bottom of the positioning frames (462) on the same side. A crossbar (46) is provided between the positioning frames (462) on both sides. The two ends of the crossbar (46) are provided with elastic elements (463) that are sleeved on the corresponding positioning frames (462) between the mounting frame (4) and the two ends of the crossbar (46). A locking rod (47) is provided at the bottom of the rodless cylinder (32). A top block (461) is provided at the front middle of the crossbar (46) that contacts and abuts against the locking rod (47).

6. The ECMO blood flow confluence plane visualization device according to claim 5, characterized in that, It also includes buckles (451) symmetrically arranged at the ends of the lead cloth (45), the buckles (451) being fitted to the side of the bed frame (1) to fix the position of the lead cloth (45).

7. The ECMO blood flow confluence plane visualization device according to claim 6, characterized in that, It also includes support rods (5) spaced vertically on one side of the bed (1), and a guide frame (51) facing the support rods (5) is provided on the movable support (2). The guide frame (51) has a cavity inside that is adapted to the layout of the support rods (5), and the support rods (5) slide with the adjacent cavity.

8. The ECMO blood flow confluence plane visualization device according to claim 7, characterized in that, It also includes a symmetrical sliding dial (52) on the guide frame (51), an elastic element (521) is provided between the dial (52) and the guide frame (51), and a sliding insertion rod (53) is provided on the side of the dial (52) that is far apart from each other, which slides through the guide frame (51). The insertion rod (53) is inserted into the support rod (5) on the same side to fix the position between the support rod (5) and the guide frame (51).

9. The ECMO blood flow confluence plane visualization device according to claim 8, characterized in that, It also includes a baffle (6) disposed at the bottom of the front end of each of the extension sleeves (33), the baffle (6) having an opening on the front side, and a closing plate (61) that matches the opening of the adjacent baffle (6) is disposed on each of the X-ray probes (35) for closing the space of the baffle (6) to block the corresponding X-ray probe (35).

10. The ECMO blood flow confluence plane visualization device according to claim 9, characterized in that, It also includes sliding sleeves (7) on both sides of the front part of the guide rail (3), and a U-shaped plate (71) that abuts against the lead cloth (45) is slidably arranged between the two sliding sleeves (7), and a load block (72) is provided on both sides of the top of the U-shaped plate (71).