Angle adjusting structure plugging device for cardiac surgery

Abstract

The invention discloses an angle adjusting structure plugging device for cardiac surgery, and belongs to the technical field of cardiac surgery auxiliary medical instruments, the angle adjusting structure plugging device comprises a guide tube, the guide tube is provided with a guide cavity, and the guide cavity is provided with a guide port. According to the scheme, the fixing rod is arranged, the guide plate drives the first magnet to get close to the second magnet while driving the rolling rod to slide along the sliding groove, when the guide plate is in the horizontal state, the distance between the first magnet and the second magnet reaches the shortest distance, and at the moment, under the action of magnetic force, the rolling rod is fixed. A first magnet drives a fixing rod to move downwards and compress a first spring, and the fixing rod is gradually inserted into a fixing groove in the downward moving process, so that a guide plate can be fixed, the situation that a pulling assembly drives the guide plate to incline again, and blocking of a follow-up notch by a conveying sheathing canal is affected is avoided, and meanwhile it is not needed that when the follow-up notch is blocked every time, the follow-up notch is blocked by the conveying sheathing canal. And the guide plates in front of the notches are sequentially pushed to be flattened, so that the effect of improving the operation efficiency is achieved.

Description

Technical Field

[0001] This invention relates to the field of assistive medical devices for cardiac surgery, and more specifically, to an angle-adjustable occluder for cardiac surgery. Background Technology

[0002] Cardiac surgical occluders are typically woven from shape memory alloys (such as nitinol), which have shape memory effect and superelasticity. They are mainly used to close abnormal channels or defects inside the heart, such as atrial septal defects, ventricular septal defects, and patent ductus arteriosus.

[0003] Currently, during closure, the occluder is typically compressed and inserted into a delivery sheath externally, then pushed to the heart defect site and released. Upon release, it automatically reverts to its pre-set double-disc or plug-like structure, clamping the surrounding tissue like a "double-sided umbrella" or "sandwich," thus achieving permanent closure. However, when the patient has a two-hole or multi-hole septal defect, this device cannot effectively address the guidance and positioning of the occluder at multiple sites, severely impacting surgical efficiency.

[0004] To address the aforementioned issues, some solutions have been proposed in existing technologies. For example, Chinese invention patent CN112690837B discloses an angle-adjustable occluder for cardiac surgery. This device, through the setting of a guide tube with multiple side openings and the cooperation of a sliding plate, can quickly guide the occluder catheter to the affected area, thereby enabling rapid closure of multiple cardiac defects, saving surgical time and improving surgical efficiency. However, in actual use, certain limitations still exist. When closure of the defect after the first defect, the occluder catheter needs to push the sliding plate in front of the defect downwards each time before it can continue to move towards the defect. Moreover, after the occluder catheter passes the sliding plate, the elastic membrane pulls the sliding plate upwards, thus applying a thrust to the occluder catheter. When the occluder catheter moves too far, multiple sliding plates simultaneously apply a thrust to the occluder catheter, which can easily cause the occluder catheter to deviate, seriously affecting surgical efficiency. Summary of the Invention

[0005] To address the problems existing in the prior art, the purpose of this invention is to provide an angle-adjustable occluder for cardiac surgery, which can improve surgical efficiency.

[0006] To solve the above problems, the present invention adopts the following technical solution.

[0007] An angle-adjustable occluder for cardiac surgery includes a guide tube, a guide cavity with a guide port, a groove on the side wall of the guide cavity, a roller slidably mounted in the groove, a guide plate rotatably mounted on the roller, a pulling assembly cooperating with the guide plate on the guide tube, a fixing groove on the inner bottom wall of the guide cavity, and a fixing assembly cooperating with the fixing groove on the guide plate.

[0008] The fixing component includes a vertical groove formed on the guide plate, a fixing rod slidably installed in the vertical groove, and a first spring installed between the fixing rod and the vertical groove. A first magnet is fixedly installed on the fixing rod, and a second magnet that attracts the first magnet is fixedly installed on the guide tube. A push plate is provided on the guide plate.

[0009] Furthermore, a first rotating rod is rotatably mounted on the guide plate, and a spring is installed between the first rotating rod and the guide plate. A stop bar that cooperates with a fixed rod is fixedly mounted on the first rotating rod, and a support assembly is provided on the guide plate.

[0010] Furthermore, the support assembly includes a second rotating rod rotatably mounted on a guide plate, a support plate fixedly mounted on the second rotating rod, limit holes respectively formed on the second rotating rod, and a torque spring jointly installed between the second rotating rod and the guide plate.

[0011] Furthermore, the guide plate has an installation groove, in which a third rotating rod is rotatably installed. A horizontal rod that cooperates with the stop rod is fixedly installed on the third rotating rod, and a rotating spring is installed between the third rotating rod and the guide plate. A linkage rod is fixedly installed on the third rotating rod, and a limit rod is fixedly installed on the linkage rod.

[0012] Furthermore, the second rotating rod is provided with a locking groove that cooperates with the limiting rod.

[0013] Furthermore, the pulling assembly includes a connecting rope fixedly installed on the guide plate, and an installation rod is fixedly installed at the end of the connecting rope away from the guide plate. An elastic membrane is fixedly installed on the installation rod, and the end of the elastic membrane away from the installation rod is fixedly connected to the guide cavity. A rotating rod is fixedly installed on the side wall of the guide cavity.

[0014] Furthermore, a limiting plate is fixedly installed at the end of the rotating rod away from the side wall of the guide cavity.

[0015] Furthermore, the chute and the roller are provided in two sets, and the two sets of rollers are symmetrically arranged around the guide plate.

[0016] Furthermore, side plates are symmetrically fixedly installed on the guide plate.

[0017] Furthermore, the height of the push plate is greater than the height of the support plate.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] (1) By setting a fixed rod, the guide plate drives the roller to slide along the groove, and the guide plate drives the first magnet to move closer to the second magnet. When the guide plate is in a horizontal state, the distance between the first magnet and the second magnet is the closest. At this time, under the action of magnetic force, the first magnet drives the fixed rod to move downward and compress the first spring. As the fixed rod moves downward, it gradually inserts into the fixed groove, thereby fixing the guide plate. This avoids the pulling component from causing the guide plate to tilt again, affecting the sealing of the subsequent gap by the delivery sheath. At the same time, it is not necessary to push the guide plate in front of the gap to flatten it each time the subsequent gap is sealed, which improves the efficiency of the operation.

[0020] (2) This scheme uses a spring to drive the push plate to rotate during the rotation of the first rotating rod. During the rotation of the push plate, the push plate is driven to become horizontal, thereby avoiding the push plate from affecting the normal movement of the delivery sheath to other gaps. It should be noted that when the delivery sheath is about to move to the gap to be sealed, the medical staff can lift the delivery sheath upward and make the delivery sheath contact the guide plate at the gap above the push plate, which further improves the efficiency of the operation.

[0021] (3) This scheme sets up a support plate, which drives the stop rod to rotate during the rotation of the first rotating rod. During the rotation of the stop rod, it gradually contacts the horizontal rod and quickly drives the limit rod to rotate through the horizontal rod, the third rotating rod, and the linkage rod. During the rotation of the limit rod, it gradually disengages from the limit hole. At this time, the torque spring extends and drives the second rotating rod to rotate. During the rotation of the second rotating rod, it drives the support plate to rotate. During the rotation of the support plate, it can push the delivery sheath upward, thereby further avoiding the push plate from affecting the normal movement of the delivery sheath to other gaps. In addition, when there are many gaps, the presence of the support plate can provide support in the middle of the delivery sheath, thereby avoiding the delivery sheath from bending due to excessive length in the guide tube, which affects the surgical efficiency and further improves the surgical efficiency. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the present invention;

[0023] Figure 2 This is a cross-sectional view of the present invention;

[0024] Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle;

[0025] Figure 4 For the present invention Figure 3 Enlarged view at point B in the middle;

[0026] Figure 5 This is a diagram showing the combination of the push plate and the support plate of the present invention;

[0027] Figure 6 This is a schematic diagram of the guide plate of the present invention in a horizontal state;

[0028] Figure 7 This is a schematic diagram of the structure of the guide plate of the present invention in an inclined state.

[0029] Explanation of the labels in the diagram:

[0030] 1. Guide tube; 2. Guide cavity; 3. Guide port; 4. Roller; 5. Guide plate; 6. Fixing groove;

[0031] 7. Fixing assembly; 701. Fixing rod; 702. First spring; 703. First magnet; 704. Second magnet; 705. Push plate;

[0032] 801, First rotating rod; 802, mainspring; 803, stop bar; 805, support assembly; 8051, Second rotating rod; 8052, support plate; 8053, limiting hole; 8054, torque spring;

[0033] 901. Third rotating rod; 902. Horizontal rod; 903. Rotary spring; 904. Linkage rod; 905. Limiting rod; 906. Locking groove;

[0034] 10. Pulling assembly; 101. Connecting rope; 102. Mounting rod; 103. Elastic membrane; 104. Rotating rod; 105. Limiting plate;

[0035] 11. Side panels. Detailed Implementation

[0036] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0037] Please see Figures 1 to 7An angle-adjustable occluder for cardiac surgery includes a guide tube 1, a guide cavity 2 and a guide port 3 on the guide tube 1, a sliding groove on the side wall of the guide cavity 2, a roller 4 slidably installed in the sliding groove, a guide plate 5 rotatably installed on the roller 4, and a pulling assembly 10 that cooperates with the guide plate 5 on the guide tube 1. A fixing groove 6 is formed on the inner bottom wall of the guide cavity 2, and a fixing assembly 7 that cooperates with the fixing groove 6 is provided on the guide plate 5.

[0038] The fixing component 7 includes a vertical groove formed on the guide plate 5. A fixing rod 701 is slidably installed in the vertical groove, and a first spring 702 is installed between the fixing rod 701 and the vertical groove. A first magnet 703 is fixedly installed on the fixing rod 701. A second magnet 704 that attracts the first magnet 703 is fixedly installed on the guide tube 1, and a push plate 705 is provided on the guide plate 5.

[0039] A first rotating rod 801 is rotatably mounted on the guide plate 5, and a spring 802 is installed between the first rotating rod 801 and the guide plate 5. A stop bar 803 that cooperates with the fixed rod 701 is fixedly mounted on the first rotating rod 801, and a support assembly 805 is provided on the guide plate 5.

[0040] In use, using ultrasound imaging, the guide tube 1 is placed in the appropriate position, and the guide port 3 on the guide tube 1 is aligned with the cardiac incision location. The occluder is then compressed into the delivery sheath, which is inserted through the inlet of the guide tube 1. The delivery sheath gradually contacts the guide plate 5 on the push plate 705. Because the pulling assembly 10 applies a pulling force to the top of the guide plate, as the delivery sheath moves, the end of the delivery sheath containing the occluder will move upwards along the guide plate 5, gradually entering the guide tube. The delivery sheath enters through port 3 and reaches the cardiac apex via guide port 3. At this point, the delivery sheath releases the occluder at the cardiac apex, sealing the apex. After sealing, the delivery sheath can be withdrawn. When sealing a second apex, the delivery sheath can be reinserted through the inlet of guide tube 1, contacting the push plate 705 at the first apex. The delivery sheath then pushes the guide plate 5 via the push plate 705, moving the roller 4 along the slide groove during the movement of the guide plate 5. The guide plate 5 below the first notch gradually becomes horizontal. As the conveying sheath continues to move, it gradually contacts the guide plate 5 at the second notch and enters the corresponding guide port 3 along the guide plate 5. Then, it moves to the second notch through the guide port 3, thus sealing the second notch. This achieves the purpose of quickly sealing multiple notches. At the same time, as the guide plate 5 drives the roller 4 to slide along the groove, the guide plate 5 drives the first magnet 703 to move closer to the second magnet 704. And when the guide plate 5 is in a horizontal state... When the distance between the first magnet 703 and the second magnet 704 is closest, under the action of magnetic force, the first magnet 703 drives the fixing rod 701 to move downward and compress the first spring 702. As the fixing rod 701 moves downward, it gradually inserts into the fixing groove 6, thereby fixing the guide plate 5. This prevents the pulling assembly 10 from causing the guide plate 5 to tilt again, which would affect the sealing of the subsequent gap by the delivery sheath. At the same time, it eliminates the need to push the guide plate 5 in front of the gap flat each time the subsequent gap is sealed, thus improving the efficiency of the operation.

[0041] Initially, the spring 802 is in a charged state. As the fixed rod 701 moves downward, it gradually disengages from the stop rod 803. At this time, the spring 802 extends and drives the first rotating rod 801 to rotate. During the rotation of the first rotating rod 801, the push plate 705 rotates. As the push plate 705 rotates, it becomes horizontal, thus preventing the push plate 705 from affecting the normal movement of the delivery sheath to other gaps. It should be noted that when the delivery sheath is about to move to the gap to be sealed, medical staff can lift the delivery sheath upward and make it contact the guide plate 5 at the gap above the push plate 705, further improving the efficiency of the operation.

[0042] like Figure 3 , Figure 4 , Figure 5 As shown, the support assembly 805 includes a second rotating rod 8051 rotatably mounted on the guide plate 5, a support plate 8052 fixedly mounted on the second rotating rod 8051, limit holes 8053 respectively opened on the second rotating rod 8051, and a torque spring 8054 is installed between the second rotating rod 8051 and the guide plate 5.

[0043] The guide plate 5 has an installation groove, in which a third rotating rod 901 is rotatably installed. A horizontal rod 902 that cooperates with the stop rod 803 is fixedly installed on the third rotating rod 901. A rotary spring 903 is installed between the third rotating rod 901 and the guide plate 5. A linkage rod 904 is fixedly installed on the third rotating rod 901, and a limit rod 905 is fixedly installed on the linkage rod 904.

[0044] The second rotating rod 8051 has a locking groove 906 that cooperates with the limiting rod 905.

[0045] By adopting the above technical solution, in the initial state, the torque spring 8054 is in a charged state and has a tendency to recover. During the rotation of the first rotating rod 801, it drives the stop rod 803 to rotate, and during the rotation of the stop rod 803, it gradually contacts the horizontal rod 902, and quickly drives the third rotating rod 901 to rotate via the horizontal rod 902. At this time, the rotary spring 903 begins to charge. During the rotation of the third rotating rod 901, it drives the limiting rod 905 to rotate via the linkage rod 904. During the rotation of the limiting rod 905, it gradually disengages from the limiting hole 8053. When the torque spring 8054 extends, it drives the second rotating rod 8051 to rotate. During the rotation of the second rotating rod 8051, it drives the support plate 8052 to rotate. During the rotation of the support plate 8052, it can push the delivery sheath upward, thereby further preventing the push plate 705 from affecting the normal movement of the delivery sheath to other gaps. In addition, when there are many gaps, the presence of the support plate 8052 can provide support in the middle of the delivery sheath, thereby preventing the delivery sheath from entering the guide tube 1 too far, which would cause the delivery sheath to bend and affect the surgical efficiency, thus further improving the surgical efficiency.

[0046] During the rotation of the second rotating rod 8051, the locking groove 906 is driven to rotate. When the support plate 8052 is in a vertical state, the second rotating rod 8051 drives the locking groove 906 to rotate to the position of the limiting hole 8053. Then, after the push plate 705 is in a horizontal state, the first rotating rod 801 drives the stop rod 803 to disengage from the linkage rod 904. The rotating spring 903 extends and drives the third rotating rod 901 to reset. During the reset process of the third rotating rod 901, the limiting rod 905 is driven to insert into the locking groove 906 through the horizontal rod 902, and the vertical support plate 8052 is fixed, thereby preventing the support plate 8052 from moving and affecting the normal operation of the delivery sheath, and further improving the efficiency of the operation.

[0047] like Figure 6 As shown, the pulling assembly 10 includes a connecting rope 101 fixedly installed on the guide plate 5, and an installation rod 102 is fixedly installed on the end of the connecting rope 101 away from the guide plate 5. An elastic membrane 103 is fixedly installed on the installation rod 102, and the end of the elastic membrane 103 away from the installation rod 102 is fixedly connected to the guide cavity 2. A rotating rod 104 is fixedly installed on the side wall of the guide cavity 2.

[0048] A limiting plate 105 is fixedly installed at the end of the rotating rod 104 away from the side wall of the guide cavity 2.

[0049] By adopting the above technical solution, during the process of the guide plate 5 driving the roller 4 to slide along the groove, the guide plate 5 drives the mounting rod 102 to move through the connection. During the movement of the mounting rod 102, the elastic membrane 103 will be stretched and the elastic membrane 103 will block the guide port 3. This can prevent the guide port 3 from interfering with the sealing of other gaps after the sealing. In addition, the setting of the limiting plate 105 can prevent the connecting rope 101 from falling off the rotating rod 104, further improving the efficiency of the operation.

[0050] like Figure 7 As shown, there are two sets of the slide groove and the roller 4, and the two sets of roller 4 are symmetrically arranged around the guide plate 5.

[0051] Side plates 11 are symmetrically fixedly installed on the guide plate 5.

[0052] The height of the push plate 705 is greater than the height of the support plate 8052.

[0053] By adopting the above technical solution, during the process of the guide plate 5 driving the roller 4 to slide along the slide groove, the guide plate 5 can be balanced by symmetrically setting two sets of rollers 4 and slide grooves, which can effectively prevent the guide plate 5 from being stuck. In addition, by setting the side plate 11, the conveying sheath can be guided to prevent the conveying sheath from deviating. Furthermore, by making the height of the push plate 705 greater than the height of the support plate 8052, it can be ensured that when the push plate 705 is in a vertical state, the conveying sheath can still push the guide plate 5 at the end of the sealing position through the push plate 705, which plays a role in improving the operational stability of the device.

[0054] Instructions for use: First, using ultrasound imaging, place the guide tube 1 in the appropriate position and align the guide port 3 on the guide tube 1 with the heart gap. Then, compress the occluder into the delivery sheath and insert the delivery sheath through the inlet of the guide tube 1. The delivery sheath then gradually contacts the guide plate 5 on the push plate 705. As the pulling assembly 10 applies a pulling force to the top of the guide plate, the end of the delivery sheath containing the occluder will move upward along the guide plate 5 as the delivery sheath moves. During the upward movement of the delivery sheath along the guide plate 5, it gradually enters the guide port 3 and reaches the heart gap through the guide port 3. At this point, the delivery sheath can release the occluder at the heart gap, and the released occluder can then seal the heart gap.

[0055] When other gaps need to be sealed, medical staff can insert the delivery sheath again through the inlet of the guide tube 1 and make the delivery sheath contact the push plate 705 at the first gap. Then the delivery sheath pushes the guide plate 5 to move through the push plate 705. During the movement of the guide plate 5, the roller 4 slides along the groove. Then the guide plate 5 below the first gap gradually becomes horizontal. After the guide plate 5 becomes horizontal, the first magnet 703 drives the fixing rod 701 to insert into the fixing groove 6, thereby fixing the guide plate 5. Then the spring 802 extends and drives the first rotating rod 801 to rotate. During the rotation of the first rotating rod 801, the push plate 705 rotates. During the rotation of the push plate 705, the push plate 705 gradually becomes horizontal.

[0056] Then, as the first rotating rod 801 rotates, it drives the stop rod 803 to rotate. As the stop rod 803 rotates, it gradually comes into contact with the horizontal rod 902 and quickly drives the third rotating rod 901 to rotate through the horizontal rod 902. At this time, the rotary spring 903 begins to store force. As the third rotating rod 901 rotates, it drives the limit rod 905 to rotate through the linkage rod 904. As the limit rod 905 rotates, it gradually disengages from the limit hole 8053. At this time, the torque spring 8054 extends and drives the second rotating rod 8051 to rotate. As the second rotating rod 8051 rotates, it drives the support plate 8052 to rotate.

[0057] Finally, during the rotation of the second rotating rod 8051, the locking groove 906 is driven to rotate. When the support plate 8052 is in a vertical state, the second rotating rod 8051 drives the locking groove 906 to rotate to the position of the limiting hole 8053. Then, after the push plate 705 is in a horizontal state, the first rotating rod 801 drives the stop rod 803 to disengage from the linkage rod 904. The rotating spring 903 extends and drives the third rotating rod 901 to reset. During the reset process of the third rotating rod 901, the limiting rod 905 is driven to insert into the locking groove 906 through the horizontal rod 902, and the vertical support plate 8052 is fixed.

[0058] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and its improved concepts, should be covered within the scope of protection of the present invention.

Claims

1. A cardiac surgery angle-adjustable occluder, comprising a guide tube (1), characterized in that: The guide tube (1) is provided with a guide cavity (2) and a guide opening (3). A sliding groove is provided on the side wall of the guide cavity (2). A roller (4) is slidably installed in the sliding groove. A guide plate (5) is rotatably installed on the roller (4). A pulling component (10) that cooperates with the guide plate (5) is provided on the guide tube (1). A fixing groove (6) is provided on the inner bottom wall of the guide cavity (2). A fixing component (7) that cooperates with the fixing groove (6) is provided on the guide plate (5). The fixing component (7) includes a vertical groove formed on the guide plate (5), a fixing rod (701) is slidably installed in the vertical groove, and a first spring (702) is installed between the fixing rod (701) and the vertical groove. A first magnet (703) is fixedly installed on the fixing rod (701), a second magnet (704) that attracts the first magnet (703) is fixedly installed on the guide tube (1), and a push plate (705) is provided on the guide plate (5).

2. The cardiac surgery angle-adjustable occluder according to claim 1, characterized in that: A first rotating rod (801) is rotatably mounted on the guide plate (5), and a spring (802) is installed between the first rotating rod (801) and the guide plate (5). A stop bar (803) that cooperates with the fixed rod (701) is fixedly mounted on the first rotating rod (801), and a support assembly (805) is provided on the guide plate (5).

3. The cardiac surgery angle-adjustable occluder according to claim 2, characterized in that: The support assembly (805) includes a second rotating rod (8051) rotatably mounted on a guide plate (5), a support plate (8052) fixedly mounted on the second rotating rod (8051), limit holes (8053) respectively opened on the second rotating rod (8051), and a torque spring (8054) is installed between the second rotating rod (8051) and the guide plate (5).

4. The cardiac surgery angle-adjustable occluder according to claim 3, characterized in that: The guide plate (5) is provided with an installation groove, and a third rotating rod (901) is rotatably installed in the installation groove. A horizontal rod (902) that cooperates with the stop rod (803) is fixedly installed on the third rotating rod (901). A rotating spring (903) is installed between the third rotating rod (901) and the guide plate (5). A linkage rod (904) is fixedly installed on the third rotating rod (901), and a limit rod (905) is fixedly installed on the linkage rod (904).

5. The cardiac surgery angle-adjustable occluder according to claim 3, characterized in that: The second rotating rod (8051) has a locking groove (906) that cooperates with the limiting rod (905).

6. The cardiac surgery angle-adjustable occluder according to claim 1, characterized in that: The pulling assembly (10) includes a connecting rope (101) fixedly installed on the guide plate (5), and an installation rod (102) is fixedly installed at one end of the connecting rope (101) away from the guide plate (5). An elastic membrane (103) is fixedly installed on the installation rod (102), and one end of the elastic membrane (103) away from the installation rod (102) is fixedly connected to the guide cavity (2). A rotating rod (104) is fixedly installed on the side wall of the guide cavity (2).

7. The cardiac surgery angle-adjustable occluder according to claim 6, characterized in that: A limiting plate (105) is fixedly installed at one end of the rotating rod (104) away from the side wall of the guide cavity (2).

8. The cardiac surgery angle-adjustable occluder according to claim 1, characterized in that: The chute and the roller (4) are provided in two sets, and the two sets of rollers (4) are symmetrically arranged around the guide plate (5).

9. The cardiac surgery angle-adjustable occluder according to claim 1, characterized in that: Side plates (11) are symmetrically fixed on the guide plate (5).

10. The cardiac surgery angle-adjustable occluder according to claim 3, characterized in that: The height of the push plate (705) is greater than the height of the support plate (8052).

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