A safe double-wing mitral valve clip

Abstract

The present invention relates to the technical field of medical devices, and particularly relates to a safe double-wing mitral valve clip applier. Aiming at the problem that the barbs on the existing mitral valve clip applier are prone to damage adjacent valve leaflets during the opening process. It includes a fixed rod, a push rod is slidably connected in the fixed rod, the fixed rod is rotatably connected with symmetrically distributed rotating shafts, the symmetrically distributed rotating shafts are jointly rotatably connected with symmetrically distributed fixing plates, an extrusion member is fixedly connected to the rotating shaft, an extrusion plate is rotatably connected to the rotating shaft, and an elastic member is arranged on the extrusion member. Through the mutual cooperation of the extrusion member and the extrusion plate, the present invention uses elastic extrusion force to clamp the valve leaflets of the mitral valve. When loosening the valve leaflets of the mitral valve, it will not cause damage to the valve leaflets at that place, so that the extrusion member and the extrusion plate finally clamp the complete valve leaflets of the mitral valve, thereby ensuring the fixing effect of the extrusion member and the extrusion plate on adjacent valve leaflets, and making the device more stable in suppressing the regurgitation of the patient's mitral valve.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly relates to a safe double-wing mitral valve clip applier. Background Art

[0002] A mitral valve clip applier is a medical device used in mitral valve interventional surgery and is often applied to treat heart diseases such as mitral regurgitation. During the operation, medical staff use an existing delivery device to deliver the mitral valve clip applier into the patient's heart. The medical staff control the opening and closing of the two jaws of the mitral valve clip applier through components such as wire ropes and rods inside the delivery device. After the two jaws of the mitral valve clip applier respectively clamp the two leaflets of the patient's mitral valve and drag the two leaflets to the closed position, the medical staff need to observe the clamping effect of the mitral valve clip applier through an ultrasonic device. If the clamping effect is good, the mitral valve clip applier is directly fixed at this position. If the clamping position is not good, the mitral valve clip applier needs to be opened and the clamping of the two leaflets of the patient's mitral valve is repeated. The existing mitral valve clip applier is provided with barbs for auxiliary fixation to enhance the fixation effect between the mitral valve clip applier and the adjacent leaflets. However, when the clamping position of the mitral valve clip applier is not good and the mitral valve clip applier needs to be opened, the barbs will hook the surface layer of the adjacent leaflet, causing local damage to the adjacent mitral valve leaflet, increasing the risk of surgical complications. Moreover, if there is an overlapping part between the position of the second clamping of the mitral valve clip applier and the position of the first clamping, it is easy to cause the mitral valve clip applier to clamp the damaged part of the mitral valve leaflet during the second clamping process. As a result, the force that the damaged mitral valve leaflet can withstand against the adjacent barbs on the mitral valve clip applier decreases, and the fixation effect of the mitral valve clip applier on the damaged leaflet weakens, making the mitral valve clip applier more likely to slide relative to the mitral valve. During the diastolic and systolic movements of the mitral valve, the damaged part of the mitral valve is repeatedly dragged and pulled by the barbs on the mitral valve clip applier, resulting in difficulty in healing the damaged part of the mitral valve. During the movement of the mitral valve clip applier following the mitral valve, due to the influence of the dragging force, it gradually slides relative to the damaged part of the mitral valve, causing the effect of the mitral valve clip applier in inhibiting the patient's mitral regurgitation to gradually weaken over time. Summary of the Invention

[0003] In order to overcome the drawback that the barbs on the existing mitral valve clip applier are prone to damage adjacent leaflets during the opening process, the present invention provides a safe double-wing mitral valve clip applier.

[0004] Technical solution: A safe double-wing mitral valve clip includes a fixed rod, a push rod is slidably connected inside the fixed rod, the fixed rod is rotatably connected with symmetrically distributed rotating shafts, the symmetrically distributed rotating shafts are jointly rotatably connected with symmetrically distributed fixing plates, elastic wings are fixedly connected to the back sides of the symmetrically distributed fixing plates, there is elasticity at the connection between the wing and the adjacent fixing plate, an extrusion member is fixedly connected to the rotating shaft, an extrusion plate is rotatably connected to the rotating shaft, an extrusion cylinder is threadedly connected to one side of the push rod close to the adjacent fixing plate, a sliding shell is rotatably connected to the outside of the extrusion cylinder with a limit, there is a damping between the extrusion cylinder and the sliding shell, symmetrically distributed connecting frames are fixedly connected to the sliding shell, the connecting frames are slidably connected to the adjacent extrusion plates, a first pulling rope is arranged on one side of the extrusion member away from the adjacent rotating shaft, a second pulling rope is arranged on one side of the extrusion member close to the adjacent rotating shaft, an elastic member is arranged on one side of the extrusion member away from the fixed rod, a fixing mechanism for assisting in fixing the symmetrically distributed extrusion members and the adjacent valve leaflets is arranged on the outside of the fixed rod, and a limiting component for restricting the relative movement between the fixing plate and the sliding shell is jointly arranged between the fixing plate and the sliding shell.

[0005] In addition, particularly preferably, the elastic member is arranged as evenly distributed arches, and each arch is provided with a through hole.

[0006] In addition, particularly preferably, the side of the extrusion plate close to the adjacent extrusion member is provided with evenly distributed circular protrusions, and the circular protrusions correspond to the adjacent through holes on the adjacent elastic member one by one.

[0007] In addition, particularly preferably, the fixing mechanism includes symmetrically distributed fixing frames, the symmetrically distributed fixing frames are fixedly connected to the side of the fixed rod away from the adjacent rotating shaft, a first sliding frame is slidably connected to one of the fixing frames, a second sliding frame is slidably connected to the other fixing frame, the second sliding frame is located inside the first sliding frame, and their shapes are similar, the first sliding frame and the second sliding frame are both provided with evenly distributed fixing thorns, and a pushing component for pushing the first sliding frame and the second sliding frame to move is arranged on the side of the fixed rod close to the extrusion cylinder.

[0008] In addition, particularly preferably, a rectangular through hole is arranged inside the extrusion member, the fixing thorns on the first sliding frame and the second sliding frame respectively face the middle of the through holes of the adjacent arches on the adjacent elastic member through the through holes of the adjacent extrusion member, and the length of the fixing thorns is less than the distance between the symmetrically distributed extrusion members.

[0009] In addition, particularly preferably, the first sliding frame and the second sliding frame are both fixedly connected with evenly distributed fixing blocks, and the fixing blocks are in extrusion fit with the contact positions of the adjacent two arches on the adjacent elastic member.

[0010] In addition, it is particularly preferred that the pushing assembly includes a limiting extrusion block, the limiting extrusion block is splined to one side of the fixed rod close to the extrusion cylinder, the limiting extrusion block is provided with symmetrically distributed limiting grooves, the first sliding frame and the second sliding frame are respectively in limiting cooperation with the adjacent limiting grooves, the limiting extrusion block is provided with symmetrically distributed inclined surfaces, the first sliding frame and the second sliding frame are respectively in extrusion cooperation with the adjacent inclined surfaces, symmetrically distributed extrusion strips are fixedly connected to one side of the limiting extrusion block close to the extrusion cylinder, the extrusion cylinder is provided with two groups of centrally symmetrically distributed grooves, each group includes symmetrically distributed grooves, and the depths of the grooves in different groups are different. The symmetrically distributed grooves on the extrusion cylinder are respectively in extrusion cooperation with the adjacent extrusion strips.

[0011] In addition, it is particularly preferred that the limiting assembly includes two groups of symmetrically distributed elastic limiting members, each group includes uniformly distributed elastic limiting members, the elastic limiting members are fixedly connected to one side of the fixing plate close to the sliding shell, a limiting rope penetrating the adjacent fixing plate is arranged on the fixed rod, the limiting rope penetrates all the elastic limiting members on the adjacent fixing plate, the limiting rope is in limiting cooperation with all the elastic limiting members on the adjacent fixing plate, a groove is arranged on the sliding shell close to the adjacent elastic limiting member, and the groove on the sliding shell is in limiting cooperation with the adjacent elastic limiting member.

[0012] In addition, it is particularly preferred that the symmetrically distributed limiting ropes all penetrate the limiting extrusion block and are in limiting cooperation with it.

[0013] In addition, it is particularly preferred that there are also symmetrically distributed extrusion frames, the symmetrically distributed extrusion frames are fixedly connected to the lower side of the limiting extrusion block, one side of the elastic member close to the adjacent rotating shaft is slidably connected to the adjacent extrusion member, and the extrusion frame is in extrusion cooperation with the adjacent elastic member.

[0014] The present invention has at least the following three progressive points compared with the prior art: through the mutual cooperation of the extrusion member and the extrusion plate, the present invention clamps the leaflets of the mitral valve by using the elastic extrusion force, and when releasing the leaflets of the mitral valve, it will not cause damage to the leaflets at this place, so that the extrusion member and the extrusion plate finally clamp the complete leaflets of the mitral valve, thereby ensuring the fixing effect of the extrusion member and the extrusion plate on the adjacent leaflets, and making the device more stable in inhibiting the regurgitation of the patient's mitral valve.

[0015] In the present invention, the arch on the elastic member cooperates with the adjacent circular protrusions, enhancing the clamping effect of the extrusion member and the extrusion plate on the mitral valve leaflets. Consequently, it ensures that the extrusion member and the extrusion plate always maintain a relatively fixed state with the adjacent leaflets, preventing the extrusion member and the extrusion plate from gradually sliding relative to the mitral valve during the movement of the mitral valve. Thus, it avoids the situation where the mitral regurgitation of the patient gradually increases over time. Meanwhile, the present invention further repairs the voids on both sides of the clamped part of the patient's mitral valve using two flanks, without obstructing the normal blood flow and further preventing regurgitation on both sides of the clamped part of the patient's mitral valve.

[0016] In the present invention, through the cooperation of the limit extrusion block with the first sliding frame and the second sliding frame, the movement of the first sliding frame and the second sliding frame is controlled at an appropriate time, increasing the fixing effect of the adjacent first sliding frame and the adjacent second sliding frame on the mitral valve leaflets. At this time, the fixing spikes come into contact with the intact parts of the adjacent leaflets, and a greater force can be borne between the fixing spikes and the leaflets, thereby ensuring that a greater pulling force can be borne between the extrusion member and the extrusion plate and the adjacent leaflets, enhancing the fixing effect of the extrusion member and the extrusion plate on the adjacent leaflets. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0018] Figure 2 is an open state diagram of the fixing rod, extrusion member and extrusion plate of the present invention;

[0019] Figure 3 is a three-dimensional structural schematic diagram of the extrusion cylinder, sliding shell and limit extrusion block of the present invention;

[0020] Figure 4 is an exploded view of the fixing rod, extrusion member and extrusion plate of the present invention;

[0021] Figure 5 is a three-dimensional structural schematic diagram of the extrusion member, first sliding frame and second sliding frame of the present invention;

[0022] Figure 6 is a three-dimensional structural schematic diagram of the rotating shaft, extrusion member and second pulling rope of the present invention;

[0023] Figure 7 is a cross-sectional view of the fixing rod, fixing plate and sliding shell of the present invention;

[0024] Figure 8 is a three-dimensional structural schematic diagram of the fixing plate, elastic limiting member and limiting rope of the present invention;

[0025] Figure 9 is a three-dimensional structural schematic diagram of the fixing frame, first sliding frame and second sliding frame of the present invention;

[0026] Figure 10Explosion diagram of the fixing rod, the first sliding frame and the second sliding frame of the present invention;

[0027] Figure 11 Cooperating state diagram of the first sliding frame, the second sliding frame and the limiting extrusion block of the present invention.

[0028] Markings in the figure: 1, fixing rod; 101, pushing rod; 2, rotating shaft; 3, fixing plate; 301, flank; 4, extrusion member; 5, extrusion plate; 6, extrusion cylinder; 7, sliding shell; 71, connecting frame; 8, first pulling rope; 9, second pulling rope; 10, elastic member; 11, circular protrusion; 12, fixing frame; 13, first sliding frame; 14, second sliding frame; 15, fixing thorn; 16, fixing block; 17, limiting extrusion block; 171, limiting groove; 172, inclined surface; 18, extrusion strip; 19, elastic limiting member; 20, limiting rope; 21, extrusion frame. Specific embodiments

[0029] To make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, the descriptions of well-known structures and technologies are omitted to avoid unnecessarily confusing the concepts of the present invention.

[0030] Embodiment 1: Because when using a mitral valve clip for mitral valve intervention surgery, after initially fixing the two valve leaflets, it is necessary to use ultrasonic equipment to observe the fixing effect of the mitral valve clip on the mitral valve leaflets. If the clamping position of the mitral valve clip is not good, it is also necessary to open the mitral valve clip to re-clamp other positions of the mitral valve leaflets. At this time, the barbs of the mitral valve clip often hook the surface of the adjacent valve leaflet, resulting in damage to the surface of the patient's mitral valve leaflet. It is easy to cause difficulty in firmly clamping this area when the mitral valve clip is clamped again, thereby affecting the treatment effect of the mitral valve clip on the patient's mitral regurgitation.

[0031] In view of the above problems, the present invention proposes a safe double-wing type mitral valve clip, referring to Figures 1-7As shown, it includes a fixed rod 1, which is connected to an existing conveying device. The existing conveying device includes a power rod, a pulling rod and a plurality of connecting ropes (a first pull rope 8, a second pull rope 9 and a limit rope 20, etc., wherein the above-mentioned connecting ropes are required for the supporting use of the present invention, and the conveying device only provides the function of pulling the connecting rope or recovering the connecting rope). The fixed rod 1 is installed at the end of the power rod through an electromagnetic block, and a push rod 101 is slidably connected inside the fixed rod 1. The push rod 101 is fixedly connected to the pulling rod. The push rod 101 and the pulling rod are hereinafter referred to as the push rod 101. The lower side of the fixed rod 1 is rotatably connected to two rotating shafts 2 symmetrically distributed on the left and right through a bracket. The two rotating shafts 2 are rotatably connected to two fixed plates 3 symmetrically distributed front and back. The backs of the two fixed plates 3 are opposite to each other. The two sides of the device are fixed with side wings 301, and a fold is set in the middle of the side wings 301. The two sides of the side wings 301 are slightly inclined upward along the fold. When the device clamps the two leaflets of the patient's mitral valve (the pore between the two leaflets changes from O shape to 8 shape at this time), the two side wings 301 are respectively located at the lower side of the two 8-shaped holes of the patient's mitral valve. When the blood flows normally from top to bottom, the blood bends downward by impacting the side wings 301 and flows downward from the edge position. When the blood flows back upward from the two 8-shaped holes while following the patient's heartbeat, the blood first impacts the side wings 301. Under the blood pressure, the side wings 301 fit the adjacent leaflets on the upper side, preventing the blood from flowing back upward and preventing the leaflets from opening due to the impact of the reverse blood flow. The side wings 301 and the adjacent fixed The connection of the plate 3 has elastic force, and the fixed plate 3 is limited by the two rotating shafts 2 and maintains a relatively fixed state with the fixed rod 1. The rotating shaft 2 is fixedly connected with an extrusion piece 4, and a through hole is set in the middle of the extrusion piece 4. The extrusion piece 4 is a square frame. The rotating shaft 2 is rotatably connected with an extrusion plate 5. The extrusion plate 5 and the adjacent extrusion piece 4 cooperate to clamp the leaflets of the adjacent mitral valve. The lower side of the push rod 101 is threadedly connected with an extrusion cylinder 6. There is damping between the two. The push rod 101 drives the extrusion cylinder 6 to rotate through the damping, thereby avoiding the loosening of the threaded connection between the push rod 101 and the extrusion cylinder 6 during the process of driving the extrusion cylinder 6 to rotate. The outer side of the extrusion cylinder 6 is rotationally connected with a sliding shell 7. There is damping between the sliding shell 7 and the extrusion cylinder 6, so that the two will not rotate freely relative to each other. And the two can only rotate 90° relative to each other. The sliding shell 7 is fixedly connected with two connecting frames 71 distributed symmetrically on the left and right. The connecting frame 71 is provided with a T-shaped slide groove. The connecting frame 71 is slidably connected with the adjacent extrusion plate 5 through the slide groove. The horizontal part of the slide groove on the connecting frame 71 is used to squeeze the adjacent extrusion plates 5 to move up and down together. When the extrusion plate 5 is reset to the initial state, it is inserted into the vertical part of the slide groove of the connecting frame 71. At this time, the extrusion plate 5 is limited by the slide groove on the connecting frame 71 and cannot rotate freely. A first pull rope 8 is provided on the upper side of the extrusion member 4. The first pull rope 8 is used to pull the adjacent extrusion member 4 to swing upward and reset. A second pull rope 9 is provided on the lower side of the extrusion member 4. The second pull rope 9 is used to pull the adjacent extrusion member 4 to swing downward and open. The back sides of the two extrusion members 4 are provided with elastic members 10.The elastic member 10 is arranged as uniformly distributed arches, and each arch is provided with a through hole for increasing the frictional force between the elastic member 10 and the adjacent valve leaf, thereby enhancing the fixing effect of the elastic member 10 on the adjacent valve leaf. Circular protrusions 11 are uniformly distributed up and down on the opposite sides of the two pressing plates 5. The circular protrusions 11 correspond one by one to the adjacent through holes on the adjacent elastic members 10. The circular protrusions 11 cooperate with the adjacent arches on the elastic member 10 to enhance the fixing effect of the pressing member 4 and the pressing plate 5 on the adjacent valve leaf. A fixing mechanism for assisting in fixing the symmetrically distributed pressing member 4 and the adjacent valve leaf is arranged on the outer side of the fixing rod 1. A limiting component for restricting the relative movement between the fixing plate 3 and the sliding shell 7 is jointly arranged between the fixing plate 3 and the sliding shell 7.

[0032] Referring to Figure 4 , Figure 5 , Figure 9 and Figure 10 as shown, the fixing mechanism includes two fixing frames 12 that are symmetrically distributed about the center. Both fixing frames 12 are fixedly connected to the upper side of the fixing rod 1. A first sliding frame 13 is slidably connected to the right side of the left fixing frame 12, and a second sliding frame 14 is slidably connected to the left side of the right fixing frame 12. The second sliding frame 14 is smaller in size than the first sliding frame 13, and their shapes are similar. The second sliding frame 14 is located inside the first sliding frame 13, and they do not interfere with each other when moving left and right. The first sliding frame 13 and the second sliding frame 14 are both provided with uniformly distributed fixing thorns 15 up and down. The fixing thorns 15 are arc-shaped, and their tips face downward. The tips of the fixing thorns 15 are ductile. The fixing thorns 15 are used to increase the fixing force of the adjacent pressing member 4 on the adjacent valve leaf. The fixing thorns 15 on the first sliding frame 13 and the second sliding frame 14 respectively face the middle of the through holes of the adjacent arches on the adjacent elastic member 10 through the through holes of the adjacent pressing member 4. The length of the fixing thorns 15 is less than the distance between the two pressing members 4. When the first sliding frame 13 and the second sliding frame 14 are in the initial state, the fixing thorns 15 do not contact the valve leaf clamped by the adjacent pressing member 4. The first sliding frame 13 and the second sliding frame 14 are both fixedly connected with uniformly distributed fixing blocks 16 up and down. The fixing blocks 16 increase the pressing force between the elastic member 10 and the adjacent valve leaf by pressing the contact points between two adjacent arches on the adjacent elastic member 10. A pushing component for pushing the first sliding frame 13 and the second sliding frame 14 to move is arranged on the lower side of the fixing rod 1.

[0033] Referring to Figure 5 , Figure 10 and Figure 11As shown, the pushing component includes a limiting and squeezing block 17 splined to the lower side of the fixed rod 1. Two limiting grooves 171 symmetrically distributed about the center are provided on the upper side of the limiting and squeezing block 17. The first sliding frame 13 and the second sliding frame 14 are respectively in limiting cooperation with the adjacent limiting grooves 171 to limit the left and right movement of the first sliding frame 13 and the second sliding frame 14. The limiting and squeezing block 17 is provided with inclined surfaces 172 symmetrically distributed about the center. The limiting and squeezing block 17 simultaneously squeezes the lower parts of the first sliding frame 13 and the second sliding frame 14 through the two inclined surfaces 172, causing the first sliding frame 13 and the second sliding frame 14 to move towards each other. Two squeezing strips 18 symmetrically distributed are fixedly connected to the lower part of the limiting and squeezing block 17. The extrusion cylinder 6 is provided with two groups of grooves symmetrically distributed about the center, each group containing symmetrically distributed grooves, and the depths of the grooves in different groups are different. When the two deeper grooves on the extrusion cylinder 6 are aligned with the adjacent squeezing strips 18, when the extrusion cylinder 6 moves upward from the bottom to the initial position, the squeezing strips 18 just completely insert into the adjacent sliding grooves on the extrusion cylinder 6. Therefore, the extrusion cylinder 6 cannot push the limiting and squeezing block 17 to move. When the shallower grooves on the extrusion cylinder 6 are aligned with the adjacent squeezing strips 18, during the process of the extrusion cylinder 6 moving upward and resetting from the bottom, the squeezing strips 18 insert into the bottoms of the adjacent sliding grooves on the extrusion cylinder 6, and the extrusion cylinder 6 drives the limiting and squeezing block 17 to move upward together by pushing the squeezing strips 18.

[0034] Referring to Figure 7 and Figure 8 As shown, the limiting component includes two groups of elastic limiting members 19 symmetrically distributed left and right, each group containing two elastic limiting members 19 evenly distributed up and down. The elastic limiting members 19 are fixedly connected to the fixed plate 3 near the adjacent sliding shell 7. A limiting rope 20 penetrating the adjacent fixed plate 3 is provided on the fixed rod 1. The limiting rope 20 penetrates all the elastic limiting members 19 on the adjacent fixed plate 3 to limit all the elastic limiting members 19 on the adjacent fixed plate 3 (the state during limiting is as shown in Figure 7 ). A groove is provided on the sliding shell 7 near the adjacent elastic limiting member 19. The groove on the sliding shell 7 is in limiting cooperation with the adjacent elastic limiting member 19. When the elastic limiting member 19 is not limited by the adjacent limiting rope 20, the elastic limiting member 19 straightens by its own elastic force to insert into the adjacent groove on the sliding shell 7 to limit the sliding shell 7. The symmetrically distributed limiting ropes 20 all penetrate the limiting and squeezing block 17 and are in limiting cooperation with it.

[0035] When medical staff are preparing to perform mitral valve interventional surgery on a patient, they first install this device on an existing delivery device. The fixed rod 1 is fixed at the end of the power rod by activating the electromagnetic chuck on the power rod of the delivery device. The push rod 101 of the delivery device is inserted into the inside of the fixed rod 1, and by rotating the push rod 101, the push rod 101 is threadedly connected to the extrusion cylinder 6. In the initial state, the symmetrically distributed extrusion strips 18 cooperate with a set of grooves with a deeper depth on the extrusion cylinder 6, and the two limiting ropes 20 jointly pass through the limiting extrusion block 17 and all the elastic limiting members 19, so that the limiting extrusion block 17 is in a relatively fixed state with the fixed rod 1, and all the elastic limiting members 19 are in a bent and energy-storing state, and the elastic limiting members 19 do not cooperate with the adjacent grooves on the sliding shell 7. Therefore, the sliding shell 7 is in a free sliding state relative to the adjacent fixing plate 3, and at this time, the two wings 301 are manually toggled to the vertical state by the medical staff, which is convenient for inserting this device into the catheter. Subsequently, the medical staff start to perform mitral valve interventional surgery on the patient.

[0036] When medical staff perform mitral valve interventional surgery on a patient, they first insert a catheter into the patient's heart. Subsequently, the medical staff insert this device into the catheter and push this device into the patient's heart by pushing the power rod and the push rod 101. When this device reaches the position of the patient's heart, the wings 301 separate from the catheter and automatically open under their own elastic force. The medical staff observe the situation inside the patient's heart through an ultrasonic device and control this device to clamp and fix the patient's mitral valve. The specific fixing process is as follows:

[0037] First, medical staff move the sliding shell 7 to the lower side of the mitral valve by controlling the power rod. Subsequently, the medical staff push the push rod 101 downward. The push rod 101 drives the extrusion cylinder 6, the sliding shell 7, and the two connecting frames 71 to move downward together. The two connecting frames 71 respectively squeeze the adjacent extrusion plates 5 to swing downward through the upper chutes thereon. The two extrusion plates 5 swing open on the lower side of the mitral valve. At this time, the medical staff tighten the two first pull ropes 8 to ensure that the two extrusion members 4 do not swing downward together. Subsequently, the medical staff control the power rod to move upward, so that the two extrusion members 4 move between the two leaflets of the mitral valve. When the leaflets contract, the medical staff simultaneously pull the two second pull ropes 9 (the medical staff can also pull the two second pull ropes 9 separately and control the two extrusion members 4 to clamp the adjacent leaflets respectively according to the same principle below), and appropriately control the two first pull ropes 8 to relax. The two second pull ropes 9 respectively pull the lower sides of the adjacent extrusion members 4 to swing upward, so that the extrusion members 4 swing as a whole to one side of the adjacent extrusion plates 5. The extrusion members 4 and the adjacent extrusion plates 5 cooperate to clamp the adjacent leaflets. At the same time, the extrusion members 4 squeeze the adjacent leaflets through the arched structure on the elastic member 10. The leaflets are simultaneously squeezed by the circular protrusions 11 on the other extrusion plate 5 and bulge into the arched through hole in the elastic member 10. The elastic member 10 and the adjacent circular protrusions 11 cooperate to increase the clamping force on the leaflets, avoiding the leaflets from detaching from the clamping of the adjacent extrusion members 4 and the adjacent extrusion plates 5 during the heartbeat process.

[0038] After the two extrusion members 4 respectively cooperate with the adjacent extrusion plates 5 to clamp the adjacent leaflets, the medical staff drag the push rod 101 upward. The push rod 101 drives the extrusion cylinder 6, the sliding shell 7, and the two connecting frames 71 to drive the adjacent components to move upward. The two connecting frames 71 respectively squeeze the adjacent extrusion plates 5 to close upward through the adjacent chutes. During the closing process of the extrusion plates 5, the medical staff maintain the clamping force of the extrusion members 4 and their upper components and the extrusion plates 5 on the adjacent leaflets by providing a continuous pulling force on the two second pull ropes 9. When the push rod 101 drives components such as the extrusion cylinder 6 and the sliding shell 7 to return to their original positions completely, the extrusion plates 5 cooperate with the adjacent components to drive the mitral valve leaflets to move to the initial state. At this time, the two leaflets are forcibly pulled to a relatively closed state under the extrusion of the adjacent extrusion members 4 and the extrusion plates 5. The two wings 301 are respectively located below the front and back sides of the patient's mitral valve. The wings 301 cooperate with the extrusion members 4 and the extrusion plates 5 to jointly inhibit the backflow of blood from bottom to top at the patient's mitral valve. The medical staff observe the specific situation inside the mitral valve through an ultrasonic device to judge whether the fixing effect of the two extrusion plates 5 on the two leaflets reaches the expected effect. If the medical staff judge that the fixing effect of the two extrusion plates 5 on the two leaflets is not good and there is still a large backflow situation inside the patient's mitral valve, then by repeating the above steps, after releasing the leaflets, re-control the two extrusion members 4 and the adjacent extrusion plates 5 to clamp other positions of the leaflets to optimize the fixing effect of the two extrusion plates 5 on the two leaflets.

[0039] Because during the process of controlling the two pressing plates 5 to clamp the leaflets as described above, the first sliding frame 13 and the second sliding frame 14 are always limited by the adjacent limiting grooves 171 on the limiting pressing block 17 (the limiting pressing block 17 is limited by the limiting rope 20 and cannot move), located between the two pressing members 4, and all the fixing thorns 15 are also located between the two pressing members 4. Therefore, the fixing thorns 15 will not contact the adjacent leaflets during the above process, and there will be no situation where the fixing thorns 15 hook the leaflets and cause damage to the adjacent leaflets when releasing the clamping of the adjacent leaflets by the pressing member 4 and the adjacent pressing plate 5.

[0040] When the medical staff determines that the fixing effect of the two pressing plates 5 on the two leaflets reaches the expected effect, the medical staff first push the push rod 101 to drive the adjacent components to move downward and open according to the above steps. And during this process, the medical staff tighten the two second pull ropes 9, so that the pressing member 4 and the adjacent components rotate and open synchronously with the adjacent pressing plate 5 (that is, the fixing of the adjacent leaflets by the pressing member 4 and the adjacent pressing plate 5 is not released). After the two pressing plates 5 are fully opened, the medical staff control the push rod 101 to rotate relative to the fixed rod 1 and the sliding housing 7. At this time, because there is damping between the push rod 101 and the extrusion cylinder 6, the push rod 101 drives the extrusion cylinder 6 to rotate together. The two connecting frames 71 on the sliding housing 7 are respectively limited by the two pressing plates 5. Therefore, the sliding housing 7 and the two connecting frames 71 are both in a relatively fixed state, and the sliding housing 7 cannot rotate together with the extrusion cylinder 6. After the extrusion cylinder 6 rotates 90° relative to the sliding housing 7, the medical staff control the push rod 101 to stop rotating. At this time, the shallow groove on the extrusion cylinder 6 corresponds to the adjacent extrusion strip 18. The staff withdraw the two limiting ropes 20 through the conveying device. The limiting ropes 20 release the limit between the limiting pressing block 17 and all the elastic limiting members 19. After the elastic limiting members 19 lose the limit, they straighten to the side away from the adjacent fixed plate 3. After the limiting pressing block 17 loses the limit, its fixed state with the fixed rod 1 is released.

[0041] After the medical staff retract the two limiting ropes 20, they drive components such as the extrusion cylinder 6 and the sliding shell 7 to move upward and reset according to the above principle by pulling the push rod 101. During the upward movement of the extrusion cylinder 6, the extrusion strip 18 is inserted into the adjacent shallow groove on the extrusion cylinder 6. When the extrusion strip 18 contacts the bottom of the adjacent shallow groove on the extrusion cylinder 6, the extrusion cylinder 6 squeezes the two extrusion strips 18 to move upward together during the upward movement. The two extrusion strips 18 drive the limiting extrusion block 17 to move upward together. The two limiting grooves 171 on the limiting extrusion block 17 respectively release the limitation on the first sliding frame 13 and the second sliding frame 14. During the upward movement of the limiting extrusion block 17, its two inclined surfaces 172 respectively squeeze the first sliding frame 13 and the second sliding frame 14, causing the first sliding frame 13 and the second sliding frame 14 to move synchronously towards each other. The first sliding frame 13 and the second sliding frame 14 respectively slide along the adjacent fixed frame 12. When the sliding shell 7 is completely reset, at this time, the first sliding frame 13 and the second sliding frame 14 move to the limit position under the extrusion of the limiting extrusion block 17. The fixing thorn 15 passes through the through hole of the adjacent extrusion member 4 and is in extrusion fit with the petal in the through hole of the adjacent arch of the adjacent elastic member 10. The fixing block 16 squeezes the contact part of the adjacent two arches of the adjacent elastic member 10, squeezing the middle part of the elastic member 10 to bulge slightly towards the side of the adjacent extrusion plate 5, thereby increasing the fixing effect of the elastic member 10 on the adjacent petal.

[0042] When the sliding shell 7 squeezes the adjacent elastic limiting member 19 during the reset process, the elastic limiting member 19 is squeezed and swings back into the adjacent fixing plate 3. When the sliding shell 7 is completely reset, the elastic limiting member 19 extends out again under the action of its own elastic force and inserts into the adjacent groove in the sliding shell 7. All the elastic limiting members 19 cooperate together to limit the sliding shell 7. At this time, the sliding shell 7 and the two fixing plates 3 are in a relatively fixed state. The connecting frame 71 limits the adjacent extrusion plate 5 through the chute to maintain the clamping effect of the extrusion plate 5 on the adjacent petal. Subsequently, the medical staff sequentially draw out the first pull rope 8 and the second pull rope 9, and continue to rotate the push rod 101. Because the extrusion cylinder 6 is limited by the extrusion strip 18 and cannot rotate at this time, the push rod 101 disengages from the extrusion cylinder 6 during the rotation process. The medical staff disconnect the power rod from the fixed rod 1 through the electromagnetic chuck and draw out the power rod and the push rod 101 along the catheter. Finally, the medical staff draws out the catheter to complete the mitral valve intervention surgery.

[0043] Example 2: On the basis of Example 1, referring to Figure 5 、 Figure 10 and Figure 11As shown, it further includes two extrusion frames 21 symmetrically distributed on the left and right. The extrusion frame 21 is a U-shaped frame, which is used to avoid hindering the movement of the first sliding frame 13 and the second sliding frame 14. Both of the two extrusion frames 21 are fixedly connected to the lower side of the limit extrusion block 17. The lower side of the elastic member 10 is slidably connected to the adjacent extrusion member 4. The extrusion frame 21 extrudes the adjacent elastic member 10 through the upper part of its U shape to increase the elastic force of the elastic member 10.

[0044] During the process that the limit extrusion block 17 and the two extrusion strips 18 move upward under the extrusion of the extrusion cylinder 6, the limit extrusion block 17 drives the two extrusion frames 21 to move together. When the limit extrusion block 17 is about to move upward to the extreme position (that is, when the sliding shell 7 and the adjacent components are about to be completely reset), the extrusion frame 21 moves to the position in contact with the adjacent elastic member 10. During the subsequent movement, the extrusion frame 21 extrudes the lower end of the adjacent elastic member 10 upward. The lower end of the elastic member 10 is extruded and moves upward along the extrusion member 4, so that the elastic member 10 is compressed upward to store energy, in order to increase the elastic force stored in each arch of the elastic member 10 and enhance the extrusion effect of the elastic member 10 on the adjacent valve leaf.

[0045] It should be understood that this embodiment is only used to illustrate the present invention and not to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope claimed by the present invention.

Claims

1. A safe double-wing mitral valve clip, characterized in that: The invention comprises a fixed rod (1), a push rod (101) being slidably connected inside the fixed rod (1), the fixed rod (1) being rotatably connected to symmetrically distributed rotating shafts (2), the symmetrically distributed rotating shafts (2) being rotatably connected to symmetrically distributed fixed plates (3), the back sides of the symmetrically distributed fixed plates (3) being fixedly connected to side wings (301), the connection between the side wings (301) and the adjacent fixed plates (3) having elastic force, the rotating shaft (2) being fixedly connected to an extrusion piece (4), the rotating shaft (2) being rotatably connected to an extrusion plate (5), the push rod (101) being threadably connected to an extrusion cylinder (6) on one side close to the adjacent fixed plate (3), the outer side of the extrusion cylinder (6) being rotatably connected to a sliding shell (7), the extrusion cylinder (6) being rotatably connected to a sliding shell (7), the extrusion cylinder (6) being rotatably connected to a sliding shell (7), the extrusion cylinder (6) being rotatably connected to a sliding shell (7), the sliding shell (7 ... There is damping between the sliding shell (6) and the sliding shell (7), the sliding shell (7) is fixedly connected with a symmetrically distributed connecting frame (71), the connecting frame (71) is slidably connected to the adjacent extrusion plate (5), a first pull rope (8) is arranged on the side of the extrusion member (4) away from the adjacent rotating shaft (2), a second pull rope (9) is arranged on the side of the extrusion member (4) close to the adjacent rotating shaft (2), an elastic member (10) is arranged on the side of the extrusion member (4) away from the fixing rod (1), a fixing mechanism for assisting in fixing the symmetrically distributed extrusion members (4) and the adjacent leaflets is arranged on the outer side of the fixing rod (1), and a limiting component for limiting the relative movement of the two is arranged between the fixing plate (3) and the sliding shell (7); The fixing mechanism comprises symmetrically distributed fixing frames (12), which are all fixedly connected to a side of the fixing rod (1) away from the adjacent rotating shaft (2), one of the fixing frames (12) is slidably connected to a first sliding frame (13), and the other of the fixing frames (12) is slidably connected to a second sliding frame (14), the second sliding frame (14) is located inside the first sliding frame (13), and the two have similar shapes, the first sliding frame (13) and the second sliding frame (14) are both provided with evenly distributed fixing spikes (15), and a pushing component for pushing the first sliding frame (13) and the second sliding frame (14) to move is provided on a side of the fixing rod (1) close to the extrusion cylinder (6); The pushing assembly comprises a limit extrusion block (17), the limit extrusion block (17) being spline-connected to a side of the fixing rod (1) close to the extrusion cylinder (6), the limit extrusion block (17) being provided with symmetrically distributed limit grooves (171), and the first sliding frame (13) and the second sliding frame (14) respectively being limit-matched with adjacent limit grooves (171).

2. A safe double-wing mitral valve clip according to claim 1, characterized in that: The elastic member (10) is arranged in uniformly distributed arches, and each arch is provided with a through hole.

3. A safe double-wing mitral valve clip according to claim 2, characterized in that: The extrusion plate (5) is provided with evenly distributed circular protrusions (11) on one side close to the adjacent extrusion piece (4), and the circular protrusions (11) correspond one-to-one to adjacent through holes on the adjacent elastic piece (10).

4. A safe double-wing mitral valve clip according to claim 3, characterized in that: A rectangular through hole is provided in the extrusion piece (4), and the fixing spikes (15) on the first sliding frame (13) and the second sliding frame (14) respectively pass through the through holes of adjacent extrusion pieces (4) toward the middle of adjacent arched through holes on adjacent elastic pieces (10), and the length of the fixing spikes (15) is less than the distance between the symmetrically distributed extrusion pieces (4).

5. A safe double-wing mitral valve clip according to claim 4, characterized in that: The first sliding frame (13) and the second sliding frame (14) are both fixedly connected with evenly distributed fixing blocks (16), and the fixing blocks (16) are squeezed and matched with two adjacent arched contact points on the adjacent elastic members (10).

6. A safe double-wing mitral valve clip according to claim 5, characterized in that: The limiting extrusion block (17) is provided with symmetrically distributed inclined surfaces (172), the first sliding frame (13) and the second sliding frame (14) are respectively extruded and matched with adjacent inclined surfaces (172), and a symmetrically distributed extrusion strip (18) is fixedly connected to a side of the limiting extrusion block (17) close to the extrusion cylinder (6), and the extrusion cylinder (6) is provided with two groups of grooves symmetrically distributed about the center, each group includes symmetrically distributed grooves, and the depths of different groups of grooves are different, and the symmetrically distributed grooves on the extrusion cylinder (6) are respectively extruded and matched with adjacent extrusion strips (18).

7. A safe double-wing mitral valve clip according to claim 6, characterized in that: The limiting assembly comprises two groups of symmetrically distributed elastic limiting members (19), each group comprising uniformly distributed elastic limiting members (19), the elastic limiting members (19) being fixed to a side of the fixing plate (3) close to the sliding shell (7), the fixing rod (1) being provided with a limiting rope (20) penetrating the adjacent fixing plate (3), the limiting rope (20) penetrating all the elastic limiting members (19) on the adjacent fixing plate (3), the limiting rope (20) being in limiting cooperation with all the elastic limiting members (19) on the adjacent fixing plate (3), the sliding shell (7) being provided with a groove close to the adjacent elastic limiting member (19), the groove on the sliding shell (7) being in limiting cooperation with the adjacent elastic limiting member (19).

8. The safe double-wing mitral valve clip according to claim 7, characterized in that: The symmetrically distributed limiting ropes (20) all penetrate the limiting extrusion block (17) and cooperate with it to limit the position.

9. A safe double-wing mitral valve clip according to claim 8, characterized in that: It also includes symmetrically distributed extrusion frames (21), which are all fixedly connected to the lower side of the limiting extrusion block (17), and the side of the elastic member (10) close to the adjacent rotating shaft (2) is slidably connected to the adjacent extrusion member (4), and the extrusion frame (21) is extrusion-matched with the adjacent elastic member (10).

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