A ring contraction system for valve ring repair

Abstract

The present invention relates to the field of medical device technology, and in particular to a ring contraction system for valve ring repair, comprising: the locking assembly includes a box body, a locking structure and an adjustment structure; the locking structure is arranged in the box body, the two ends of the locking structure extend out of the box body, the locking structure is slidably connected to the box body to adjust the spacing between the two ends of the locking structure; the adjustment structure runs through the box body and the locking structure, the adjustment structure is rotationally connected to the locking structure to control the horizontal movement of the locking structure; detachable anchors are arranged at both ends of the locking structure, the anchors are used to nail into the valve ring tissue, and the two anchors are close to each other to shrink the valve ring tissue. The present invention improves the traditional cable connection between anchors into a rigid structure of the locking assembly, thereby avoiding the problem of cable entanglement when the anchors are screwed in, and the nailing positioning is accurate and the nailing efficiency is high.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a ring contraction system for valve ring repair. Background Art

[0002] Heart valves are checkpoints between different cardiovascular structures. They can only open and close in a certain direction to ensure that blood can only flow forward and not backward. The mitral valve is a "one-way valve" between the left atrium and the left ventricle, ensuring that blood circulation flows from the left atrium to the left ventricle in a directional manner and passes a certain amount of blood flow. Blood flows from the left atrium through the mitral valve into the left ventricle, and is then pumped into the aorta by the left ventricle and flows to the whole body. The mitral valve opens, and blood flows from the left atrium into the left ventricle; then the mitral valve closes to ensure that when the left ventricle contracts to pump blood to the aorta, blood does not flow back into the left atrium. If the mitral valve is diseased and cannot be fully closed, it will cause blood to flow back into the left atrium when the left ventricle contracts. This is mitral regurgitation.

[0003] Mitral regurgitation is the most common heart valve disease worldwide. Regurgitation reduces blood flow to various parts of the body. In order to compensate, the heart will try to pump blood more forcefully, which increases the heart's workload. Patients with severe mitral regurgitation may experience a variety of debilitating symptoms, such as shortness of breath, palpitations, dizziness and fatigue. These patients face the risk of poor quality of life, significant limitation of activities, repeated hospitalizations due to heart failure and increased mortality. Chronic severe mitral regurgitation is often accompanied by heart failure, which can lead to death if not treated.

[0004] At present, there are two main treatment methods for mitral regurgitation: medication and surgery. The surgical treatment is divided into edge-to-edge repair, annulus repair and chordae repair. For annulus repair, multiple anchors are driven into the annulus, connected by cables, and the annulus is contracted by tightening the cables. However, in this method, due to the irregular shape of the annulus, when multiple anchors are driven in at one time, some anchors are not firmly driven in or become detached due to their irregular surfaces, resulting in unsatisfactory treatment. At the same time, the anchors are driven into the annulus by rotation, and the cable setting may cause the cable to be entangled with the anchor or the control device when the anchor rotates, resulting in problems such as the inability to withdraw the equipment or the cable clumping and blocking the field of view, affecting the treatment. Summary of the invention

[0005] The object of the present invention is to solve at least one of the problems in the above-mentioned background technology and to provide a ring contraction system for valve ring repair.

[0006] To achieve the above-mentioned purpose, a ring contraction system for valve ring repair of the present invention includes a locking component;

[0007] The locking assembly includes a box body, a locking structure and an adjustment structure;

[0008] The locking structure is arranged in the box body, and two ends of the locking structure extend out of the box body, and the locking structure is slidably connected with the box body to adjust the distance between the two ends of the locking structure;

[0009] The adjusting structure passes through the box body and the locking structure, and the adjusting structure is rotatably connected with the locking structure to control the horizontal movement of the locking structure;

[0010] Removably connected anchors are provided at both ends of the locking structure. The anchors are used to be nailed into the valve ring tissue. The two anchors are close to each other to contract the valve ring tissue.

[0011] Preferably, the retraction system further comprises a sheath and a positioning assembly;

[0012] The positioning assembly is disposed in the sheath tube, and the positioning assembly is slidably connected to the sheath tube;

[0013] The positioning assembly comprises a first positioning tube, a second positioning tube and a first center cable which are sleeved in sequence from outside to inside, the first center cable is detachably connected to the adjustment structure, and the first center cable is used to move the locking assembly;

[0014] The second positioning tube is cooperatively connected with the adjustment structure, and is used to control the rotation of the adjustment structure. The first positioning tube is cooperatively connected with the box body, and is used to control the rotation of the locking assembly to adjust the nailing position of the anchor.

[0015] Preferably, the ring contraction system further comprises a nailing assembly, the nailing assembly is disposed in the sheath tube, and the nailing assembly is slidably connected to the sheath tube;

[0016] The nailing assembly includes a nailing bending tube, a nailing spring tube and a second center cable which are sequentially sleeved from the outside to the inside. The nailing assembly is provided with two groups, and the two second center cables are detachably connected to the two ends of the locking structure respectively, and the second center cables are used to guide the anchor nail to be nailed in;

[0017] The anchor is detachably connected to the end of the nailing spring tube. The nailing spring tube is used to control the anchor to be nailed into the valve ring tissue. The nailing bending adjustment tube is used to control the nailing angle of the anchor.

[0018] Preferably, the adjustment structure comprises an adjustment wheel;

[0019] A protruding first gear groove is provided on the side wall of the adjusting wheel, the first gear groove is meshedly connected with the locking structure, and a protruding first limit block is provided on one end of the adjusting wheel, the first limit block is cooperatively connected with the second positioning tube;

[0020] When the adjusting wheel is inserted into the box body, both ends of the adjusting wheel extend out of the box body, the first gear groove is located in the box body, and the first gear groove limits the axial movement of the adjusting wheel;

[0021] When the second positioning tube rotates, the second positioning tube collides with the first limiting block to rotate the adjusting wheel, and the first gear groove rotates to horizontally move the locking structure.

[0022] Preferably, the adjustment structure further comprises a locking column and a first limiting pin;

[0023] The locking column axially penetrates the adjusting wheel, the first limiting pin radially penetrates the adjusting wheel and the locking column, the locking column is located in the adjusting wheel, and the locking column is movably connected to the adjusting wheel, and the locking column is threadedly connected to the first center cable;

[0024] A first sliding groove is provided on the side wall of the adjusting wheel, the first sliding groove extends along the axial direction of the adjusting wheel, the first sliding groove is used for the first limiting pin to pass through, and a plurality of second limiting blocks are provided at the bottom of the box body, and the plurality of second limiting blocks are evenly arranged along the circumference of the adjusting wheel;

[0025] When the adjusting wheel is inserted into the box body, the first sliding groove extends out of the box body, and the first sliding groove and the second limiting block are located on the same side of the box body;

[0026] When the first limiting pin moves along the first sliding slot to between the two second limiting blocks, the movement of the locking structure is locked.

[0027] Preferably, the locking structure comprises a first locking arm and a second locking arm;

[0028] The first locking arm and the second locking arm are spaced apart from each other and arranged in parallel, the spaced area is used for the adjusting wheel to pass through, and when the adjusting wheel passes through, the first locking arm and the second locking arm abut against the first gear groove respectively;

[0029] A second slide groove is arranged on the first locking arm, a third slide groove is arranged on the second locking arm, and second limit pins are arranged at both ends of the box body. Two second limit pins pass through the second slide groove and the third slide groove correspondingly. The second limit pin is slidably connected with the second slide groove and the third slide groove. The second slide groove and the third slide groove limit the movement of the first locking arm and the second locking arm.

[0030] Preferably, a limit plate is further provided in the box body, the limit plate abuts against a side of the first locking arm and the second locking arm away from the adjusting wheel, and the limit plate is used to limit the first locking arm and the second locking arm from rotating along the second limit pin.

[0031] Preferably, the locking structure further comprises an anchor rotating block;

[0032] The anchor rotating blocks are respectively arranged at ends of the first locking arm and the second locking arm that are away from each other, the anchor rotating blocks are rotatably connected to the first locking arm and the second locking arm, and the anchor rotating blocks are threadedly connected to the second center cable.

[0033] Preferably, the box body comprises an upper box body and a lower box body, and the upper box body and the lower box body are fixedly connected by the second limiting pin;

[0034] The second limiting block is arranged on a surface of the lower box body away from the upper box body, and the limiting plate is arranged on a surface of the lower box body facing the upper box body.

[0035] Preferably, a first through hole is provided on the upper box body, and the first through hole is used for the adjusting wheel to pass through;

[0036] A plurality of first limiting grooves are arranged at the edge of the first through hole, and the plurality of first limiting grooves are evenly arranged along the circumference of the first through hole; a plurality of third limiting blocks are arranged at the end of the first positioning tube, and the plurality of third limiting blocks are arranged corresponding to the plurality of first limiting grooves, and the third limiting blocks have the same outer contour as the first limiting grooves;

[0037] When the third limiting block is located in the first limiting groove, the first positioning tube moves to control the movement of the locking structure.

[0038] Based on this, the beneficial effects of the present invention are:

[0039] 1. Through the arrangement of the present invention, the ring contraction system includes a locking component, which includes a box body, a locking structure and an adjustment structure. The locking structure is arranged in the box body, and the adjustment structure runs through the box body and the locking structure. The adjustment structure can control the two ends of the locking structure to approach each other, thereby tightening the anchors at both ends of the locking structure to achieve the purpose of ring contraction. By replacing the traditional cable with a rigid structure of the locking component, the problem of cable entanglement affecting the withdrawal of the equipment or blocking the line of sight when the anchor is nailed in is avoided, thereby improving the nailing success rate;

[0040] 2. Through the scheme of the present invention, the ring contraction system also includes a positioning component and a nailing component. The positioning component controls the movement of the locking component to facilitate positioning and operation. The nailing component controls the screwing-in of the anchor to complete the anchor nailing operation. The adjustment wheel is controlled to rotate so that the first locking arm and the second locking arm are brought close to each other to tighten the anchor, thereby realizing contraction of the valve ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 A diagram schematically showing an implantation state of a ring contraction system according to an embodiment of the present invention;

[0042] Figure 2 An exploded view schematically showing a locking assembly according to an embodiment of the present invention;

[0043] Figure 3 A schematic diagram schematically shows the structure of a positioning assembly and a nailing assembly according to an embodiment of the present invention;

[0044] Figure 4 A diagram schematically showing a contracted state of a locking assembly according to an embodiment of the present invention;

[0045] Figure 5 A diagram schematically showing a leveling state of a locking assembly according to an embodiment of the present invention;

[0046] Figure 6 A diagram schematically showing a nailing state of a ring shrinking system according to an embodiment of the present invention;

[0047] Figure 7 A diagram schematically showing an unlocked state of a locking structure according to an embodiment of the present invention;

[0048] Figure 8 A diagram schematically showing a locking state of a locking structure according to an embodiment of the present invention;

[0049] Description of reference numerals: locking assembly 10, box body 101, second limiting pin 1011, limiting plate 1012, upper box body 1013, first through hole 10131, first limiting groove 10132, lower box body 1014, locking structure 102, first locking arm 1021, second slide groove 10211, second locking arm 1022, third slide groove 10221, anchor rotating block 1023, adjustment structure 103, adjustment wheel 1031, first gear groove 10311, first limiting block 10312 , first slide groove 10313, locking column 1032, first limit pin 1033, second limit block 1034, second protrusion 10341, positioning assembly 20, first positioning tube 201, third limit block 2011, second positioning tube 202, second limit groove 2021, first center cable 203, nailing assembly 30, nailing bending tube 301, nailing spring tube 302, second connecting structure 3021, second center cable 303, sheath tube 40, anchor 50, first connecting structure 501. DETAILED DESCRIPTION

[0050] The content of the present application will now be discussed with reference to exemplary embodiments. It should be understood that the embodiments discussed are only to enable those skilled in the art to better understand and thus implement the content of the present application, rather than implying any limitation on the scope of the present application.

[0051] As used herein, the term “including” and variations thereof are to be interpreted as open-ended terms meaning “including, but not limited to.” The term “based on” is to be interpreted as “based, at least in part, on.” The terms “one embodiment” and “an embodiment” are to be interpreted as “at least one embodiment.”

[0052] Figure 1 A diagram schematically showing an implantation state of a ring contraction system according to an embodiment of the present invention, Figure 2 An exploded view schematically shows a locking assembly according to an embodiment of the present invention, as shown in FIG. Figure 1 , 2 As shown, a ring contraction system for valve ring repair of the present invention comprises:

[0053] The locking assembly 10 comprises a box body 101, a locking structure 102 and an adjusting structure 103;

[0054] The locking structure 102 is disposed in the box body 101, and both ends of the locking structure 102 extend out of the box body 101. The locking structure 102 is slidably connected to the box body 101 to adjust the distance between the two ends of the locking structure 102;

[0055] The adjusting structure 103 passes through the box body 101 and the locking structure 102, and the adjusting structure 103 is rotatably connected with the locking structure 102 to control the horizontal movement of the locking structure 102;

[0056] Removably connected anchors 50 are provided at both ends of the locking structure 102. The anchors 50 are used to be nailed into the valve ring tissue. The two anchors 50 are close to each other to contract the valve ring tissue.

[0057] Specifically, the present invention improves the cable connection between anchors in the traditional technology into a rigid connection of the locking assembly 10, thereby avoiding the cable entanglement problem when the anchor is screwed into the valve ring tissue, thereby improving the nailing success rate;

[0058] The locking assembly 10 includes a box body 101, a locking structure 102 and an adjusting structure 103. The adjusting structure 103 passes through the locking structure 102, and the adjusting structure 103 is rotatably connected to the locking structure 102. By controlling the rotation of the adjusting structure 103, the horizontal movement of the locking structure 102 is controlled, and the anchors 50 connected at both ends of the locking structure 102 are controlled to move closer to or farther from each other. When the anchors 50 are controlled to move closer to each other, the purpose of contracting the valve ring tissue can be achieved, thereby achieving a therapeutic effect.

[0059] Further, Figure 3 A schematic diagram schematically shows the structure of a positioning assembly and a nailing assembly according to an embodiment of the present invention, Figure 4 A diagram schematically showing a contracted state of a locking assembly according to an embodiment of the present invention, Figure 5 A diagram schematically shows a leveling state of a locking assembly according to an embodiment of the present invention, as shown in FIG. Figure 3-5 As shown:

[0060] The ring contraction system includes a sheath 40 and a positioning assembly 20;

[0061] The positioning assembly 20 is disposed in the sheath tube 40, and the positioning assembly 20 is slidably connected to the sheath tube 40;

[0062] The positioning assembly 20 includes a first positioning tube 201, a second positioning tube 202 and a first center cable 203 which are sequentially sleeved from outside to inside. The first center cable 203 is detachably connected to the adjustment structure 103. The first center cable 203 is used to move the locking assembly 10.

[0063] The second positioning tube 202 is connected with the adjustment structure 103 for controlling the rotation of the adjustment structure 103 . The first positioning tube 201 is connected with the box body 101 for controlling the rotation of the locking assembly 10 to adjust the driving position of the anchor 50 .

[0064] Specifically, the first positioning tube 201, the second positioning tube 202 and the first center cable 203 are all made of elastic material and can be bent. Figure 4As shown, the locking assembly 10 is fixedly connected to the positioning assembly 20 and retracted into the sheath 40. At this time, the first positioning tube 201, the second positioning tube 202 and the first center cable 203 are in a bent state. When the positioning assembly 20 is controlled to move forward and the locking assembly 10 is controlled to move out of the sheath 40, the first positioning tube 201, the second positioning tube 202 and the first center cable 203 are restored to a straight line due to elasticity, so that the locking assembly 10 in the retracted state and placed vertically is stretched and adjusted to be as shown. Figure 5 The locking assembly 10 is shown in a leveled position.

[0065] Furthermore, when the first central cable 203 is connected to the adjustment structure 103, and after the adjustment structure 103, the box body 101, and the locking structure 102 are installed, the first central cable 203 can provide support for the locking assembly 10, and the movement of the locking assembly 10 can be controlled by moving the first central cable 203;

[0066] The second positioning tube 202 is connected with the adjustment structure 103, specifically, the second positioning tube 202 is connected with the top of the adjustment structure 103. When the two are connected, the adjustment structure 103 can move synchronously by controlling the rotation of the second positioning tube 202, and then the two ends of the locking structure 102 are controlled to approach each other, so as to complete the locking of the anchor 50 and realize the contraction of the valve ring.

[0067] Further, Figure 6 A schematic diagram showing the nailing state of a ring shrinking system according to an embodiment of the present invention is shown in FIG. Figure 3 , 6 As shown, the ring contraction system further includes a nailing assembly 30, which is disposed in the sheath tube 40, and the nailing assembly 30 is slidably connected to the sheath tube 40;

[0068] The nailing assembly 30 includes a nailing bending tube 301, a nailing spring tube 302 and a second center cable 303 which are sequentially sleeved from the outside to the inside. The nailing assembly 30 is provided with two groups. The two second center cables 303 are detachably connected to the two ends of the locking structure 102 respectively. The second center cables 303 are used to guide the anchor 50 to be nailed in.

[0069] The end of the nail spring tube 302 is detachably connected with the anchor 50 . The nail spring tube 302 is used to control the anchor 50 to be nailed into the valve ring tissue, and the nail bending adjustment tube 301 is used to control the nailing angle of the anchor 50 .

[0070] Specifically, the nailing and bending tube 301, the nailing spring tube 302 and the second center cable 303 are also made of elastic material and can be bent, which is convenient for operation and control;

[0071] The nailing assembly 30 is provided in two groups, and the two second central cables 303 thereof are detachably connected to the two ends of the locking structure 102 respectively, so as to support the locking assembly 10 and guide the screwing in of the anchor 50;

[0072] The anchor 50 is located in the nailing and bending adjustment tube 301, sleeved on the outside of the second center cable 303, and detachably connected to the nailing spring tube 302. Specifically, a first connecting structure 501 is provided at the end of the anchor 50, a groove (not marked in the figure) is provided on the first connecting structure 501, and a second connecting structure 3021 is provided at the end of the nailing spring tube 302, and a first protrusion (not marked in the figure) is provided on the second connecting structure 3021. When the two are connected, the first protrusion is located in the groove, and the rest of the first connecting structure 501 and the second connecting structure 3021 fit each other, thereby realizing axial limitation. In addition, since the nailing spring tube 302 and the anchor 50 are located in the nailing and bending adjustment tube 301, the inner wall of the nailing and bending adjustment tube 301 will limit the radial movement of the two, thereby realizing a fixed connection between the nailing spring tube 302 and the anchor 50.

[0073] When the nailing operation is performed, the nailing spring tube 302 is rotated and pushed, and the anchor 50 is synchronously rotated and advanced through the connection between the first connecting structure 501 and the second connecting structure 3021, so that the anchor 50 is nailed into the valve ring tissue. When the nailing is completed, the anchor 50 and part of the nailing spring tube 302 extend out of the nailing bending tube 301, and the nailing spring tube 302 is radially moved to separate it from the anchor 50. At this time, the second center cable 303 is disconnected to achieve the withdrawal of the entire nailing assembly 30.

[0074] Further, Figure 7 A diagram schematically showing an unlocking state of a locking structure according to an embodiment of the present invention, Figure 8 A diagram schematically shows a locking state of a locking structure according to an embodiment of the present invention, as shown in FIG. Figure 2 , 7 , as shown in 8:

[0075] The adjustment structure 103 includes an adjustment wheel 1031;

[0076] A protruding first gear groove 10311 is provided on the side wall of the adjusting wheel 1031, and the first gear groove 10311 is meshedly connected with the locking structure 102. A protruding first limit block 10312 is provided on one end of the adjusting wheel 1031, and the first limit block 10312 is matched and connected with the second positioning tube 202.

[0077] When the adjusting wheel 1031 is inserted into the box body 101 , both ends of the adjusting wheel 1031 extend out of the box body 101 , and the first gear groove 10311 is located in the box body 101 , and the first gear groove 10311 limits the axial movement of the adjusting wheel 1031 ;

[0078] When the second positioning tube 202 rotates, the second positioning tube 202 collides with the first limiting block 10312 to rotate the adjusting wheel 1031 , and the first gear groove 10311 rotates to horizontally move the locking structure 102 .

[0079] Specifically, the adjusting wheel 1031 is configured to be cylindrical, and its interior is hollow, and the hollow axially passes through the adjusting wheel 1031. The diameter of the adjusting wheel 1031 is the same as that of the second positioning tube 202. When the positioning assembly 20 is connected to the adjusting wheel 1031, the first center cable 203 is detachably connected to the interior of the adjusting wheel 1031, and the second positioning tube 202 abuts against the axial surface of the adjusting wheel 1031.

[0080] A first gear groove 10311 is provided on the side wall of the adjusting wheel 1031. The first gear groove 10311 extends along the circumference of the adjusting wheel 1031. The first gear groove 10311 is configured in a gear shape and is meshedly connected with the locking structure 102. When the adjusting wheel 1031 rotates, the first gear groove 10311 rotates synchronously, thereby driving the locking structure 102 to move horizontally, thereby achieving the tightening of the anchor 50.

[0081] A first limit block 10312 is provided on one end of the adjusting wheel 1031, and at least one first limit block 10312 is provided. A corresponding number of second limit grooves 2021 are provided at the end of the second positioning tube 202. The first limit block 10312 has the same outer contour as the second limit groove 2021, and the two are correspondingly provided. When the second positioning tube 202 abuts against the adjusting wheel 1031, the first limit block 10312 is inserted into the second limit groove 2021. When the second positioning tube 202 rotates, the second limit groove 2021 collides with the first limit block 10312, thereby driving the adjusting wheel 1031 to rotate synchronously.

[0082] Furthermore, the adjustment structure 103 also includes a locking column 1032 and a first limiting pin 1033;

[0083] The locking column 1032 axially penetrates the adjusting wheel 1031, the first limiting pin 1033 radially penetrates the adjusting wheel 1031 and the locking column 1032, the locking column 1032 is located in the adjusting wheel 1031, and the locking column 1032 is movably connected to the adjusting wheel 1031, and the locking column 1032 is threadedly connected to the first central cable 203;

[0084] A first sliding groove 10313 is provided on the side wall of the adjusting wheel 1031. The first sliding groove 10313 extends axially along the adjusting wheel 1031. The first sliding groove 10313 is used for the first limiting pin 1033 to pass through. A plurality of second limiting blocks 1034 are provided at the bottom of the box body 101. The plurality of second limiting blocks 1034 are evenly arranged along the circumference of the adjusting wheel 1031.

[0085] When the adjusting wheel 1031 is inserted into the box body 101, the first sliding groove 10313 extends out of the box body 101, and the first sliding groove 10313 and the second limiting block 1034 are located on the same side of the box body 101;

[0086] When the first limiting pin 1033 moves along the first sliding slot 10313 to between the two second limiting blocks 1034 , the movement of the locking structure 102 is locked.

[0087] Specifically, a first sliding groove 10313 is arranged on the side wall of the adjusting wheel 1031. When the locking column 1032 is arranged in the adjusting wheel 1031 and the first limiting pin 1033 passes through the first sliding groove 10313 and the locking column 1032, the first sliding groove 10313 limits the first limiting pin 1033, which can prevent the locking column 1032 from detaching from the adjusting wheel 1031.

[0088] When the adjusting wheel 1031 is inserted into the box body 101, the first gear groove 10311 is located inside the box body 101, the first slide groove 10313 is located outside the box body 101, and extends from the bottom of the box body 101, and a second limit block 1034 is provided at the bottom of the box body 101, and the second limit blocks 1034 are evenly arranged circumferentially along the penetration point of the adjusting wheel 1031, and multiple second limit blocks 1034 are arranged at intervals, and the interval size is greater than or equal to the diameter of the first limit pin 1033.

[0089] At the same time, the length relationship between the first slide slot 10313 and the second limit block 1034 is set as follows: when the first limit pin 1033 is located at the bottom of the first slide slot 10313, the first limit pin 1033 will not touch the second limit block 1034 when the adjusting wheel 1031 rotates.

[0090] Furthermore, a second protrusion 10341 is provided on the surfaces facing each other of the plurality of second limit blocks 1034, and the second protrusion 10341 extends a certain distance in the horizontal direction. When the first limit pin 1033 is located between the two second limit blocks 1034, the upper surface of the second protrusion 10341 can limit the first limit pin 1033 from moving out of the space between the two second limit blocks 1034, thereby ensuring that the adjusting wheel 1031 is locked, and preventing the adjusting wheel 1031 from being pulled back by the reaction force of the anchor 50 after tightening the locking structure 102, thereby ensuring that the anchor 50 is in a tightened state.

[0091] At the same time, the lower surface of the second protrusion 10341 is set to be arc-shaped, and its bending angle is from bottom to top. With such a setting, when the first limit pin 1033 is located outside the space between the two second limit blocks 1034, the locking column 1032 moves upward by pulling the first center cable 203 upward, prompting the first limit pin 1033 to squeeze the two second protrusions 10341 between the two second limit blocks 1034, and then stretch the two second protrusions 10341 open so that the first limit pin 1033 enters the space between the two second limit blocks 1034, and the lower surface of the second protrusion 10341 is set to be arc-shaped, which can facilitate the first limit pin 1033 to squeeze the second protrusion 10341, and has a certain guiding effect.

[0092] like Figure 7 As shown, in this state, the first limiting pin 1033 is located outside the space between the two second limiting blocks 1034. At this time, the second positioning tube 202 can be rotated to control the adjusting wheel 1031 to rotate and tighten the anchor nails 50 at both ends of the locking structure 102;

[0093] When the cable is pulled tight, the first center cable 203 is pulled so that the first limit pin 1033 enters the space between the two second limit blocks 1034. Figure 8 As shown, at this time, the cooperation between the first limiting pin 1033 and the second limiting block 1034 can limit the rotation of the adjusting wheel 1031, thereby locking the movement of the locking structure 102, preventing the anchor 50 from being restored to its original state due to the reaction force, and avoiding the contraction of the valve ring tissue from being restored.

[0094] Furthermore, if Figure 2 As shown, the locking structure 102 includes a first locking arm 1021 and a second locking arm 1022;

[0095] The first locking arm 1021 and the second locking arm 1022 are spaced apart and arranged in parallel with each other, and the spacing between them is enough for the adjusting wheel 1031 to pass through. When the adjusting wheel 1031 passes through, the first locking arm 1021 and the second locking arm 1022 abut against the first gear groove 10311 respectively.

[0096] A second sliding groove 10211 is arranged on the first locking arm 1021, a third sliding groove 10221 is arranged on the second locking arm 1022, and second limiting pins 1011 are arranged at both ends of the box body 101. The two second limiting pins 1011 pass through the second sliding groove 10211 and the third sliding groove 10221 respectively. The second limiting pin 1011 and the second sliding groove 10211 and the third sliding groove 10221 limit the movement of the first locking arm 1021 and the second locking arm 1022.

[0097] Specifically, a second gear groove (not marked in the figure) is provided on the surface of the first locking arm 1021 facing the second locking arm 1022, and a third gear groove (not marked in the figure) is provided on the surface of the second locking arm 1022 facing the first locking arm 1021. The second gear groove and the third gear groove are matched and connected with the first gear groove 10311. When the adjusting wheel 1031 is inserted into the box body 101, the first locking arm 1021 and the second locking arm 1022 clamp the adjusting wheel 1031 mutually.

[0098] When the adjusting wheel 1031 rotates counterclockwise, the first locking arm 1021 moves to the right and the second locking arm 1022 moves to the left, tightening the anchors 50 at both ends of the locking structure 102, thereby contracting the annular tissue nailed by the anchors 50. At this time, the rotation of the adjusting wheel 1031 is locked by controlling the locking column 1032, so that the contracted state of the annular tissue is locked, thereby achieving annular repair.

[0099] Furthermore, if Figure 2 As shown, a limit plate 1012 is also provided in the box body 101 , and the limit plate 1012 abuts against the first locking arm 1021 and the second locking arm 1022 on the side away from the adjusting wheel 1031 , and is used to limit the first locking arm 1021 and the second locking arm 1022 from rotating along the second limit pin 1011 .

[0100] Specifically, two limit plates 1012 are provided, respectively located on both sides of the box body 101. The limit plates 1012 can limit the rotation of the first locking arm 1021 and the second locking arm 1022 to both sides, ensuring that the first locking arm 1021 and the second locking arm 1022 are always in contact with the adjusting wheel 1031, ensuring that the transmission can be realized.

[0101] Furthermore, the locking structure 102 also includes an anchor rotating block 1023;

[0102] The anchor rotating block 1023 is respectively disposed at one end of the first locking arm 1021 and the second locking arm 1022 away from each other, and the anchor rotating block 1023 is rotatably connected to the first locking arm 1021 and the second locking arm 1022 , and the anchor rotating block 1023 is threadedly connected to the second center cable 303 .

[0103] Specifically, the anchor rotating block 1023 can guide and position the screwing-in of the anchor 50. When in use, by fixedly connecting the second center cable 303 to the anchor rotating block 1023, the anchor 50 is screwed into the annular tissue along the position of the anchor rotating block 1023 through the rotation of the nailing spring tube 302. At the same time, since the anchor rotating block 1023 is rotatably connected to the first locking arm 1021 and the second locking arm 1022, the rotation of the anchor rotating block 1023 can be controlled by adjusting the bending degree of the nailing bending tube 301, thereby controlling the anchor 50 to have different nailing angles, which can effectively adapt to the irregular surface of the annular tissue, make the nailing complete, and improve the nailing efficiency.

[0104] Furthermore, the box body 101 includes an upper box body 1013 and a lower box body 1014, and the upper box body 1013 and the lower box body 1014 are fixedly connected by a second limiting pin 1011;

[0105] The second limiting block 1034 is disposed on a surface of the lower box body 1014 away from the upper box body 1013 , and the limiting plate 1012 is disposed on a surface of the lower box body 1014 facing the upper box body 1013 .

[0106] Furthermore, a first through hole 10131 is provided on the upper box body 1013, and the first through hole 10131 is used for the adjustment wheel 1031 to pass through;

[0107] A plurality of first limiting grooves 10132 are arranged at the edge of the first through hole 10131, and the plurality of first limiting grooves 10132 are evenly arranged along the circumference of the first through hole 10131. A plurality of third limiting blocks 2011 are arranged at the end of the first positioning tube 201, and the plurality of third limiting blocks 2011 are arranged corresponding to the plurality of first limiting grooves 10132, and the outer contours of the third limiting blocks 2011 and the first limiting grooves 10132 are consistent;

[0108] When the third limiting block 2011 is located in the first limiting groove 10132 , the first positioning tube 201 moves to control the movement of the locking structure 102 .

[0109] With such arrangement, the first positioning tube 201 can be rotated, and then the third limiting block 2011 can be matched with the first limiting groove 10132 to control the rotation of the box body 101, so as to adjust the driving position of the anchor 50 and ensure accurate positioning.

[0110] To summarize, the shrinking system of the present invention includes a locking assembly 10, which includes a box body 101, a locking structure 102 and an adjusting structure 103. The locking structure 102 is arranged in the box body 101, and the adjusting structure 103 runs through the box body 101 and the locking structure 102. The adjusting structure 103 can control the two ends of the locking structure 102 to approach each other, thereby tightening the anchors 50 at both ends of the locking structure 102 to achieve the purpose of shrinking the valve ring. By replacing the traditional cable with the rigid structure of the locking assembly 10, the problem of cable entanglement affecting the withdrawal of the equipment or blocking the line of sight when the anchor 50 is nailed in can be avoided, thereby improving the success rate of nailing.

[0111] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with (but not limited to) technical features with similar functions disclosed in the present application.

[0112] It should be understood that the size of the serial numbers of the steps in the invention content and embodiments of the present application does not absolutely mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

Claims

1. A ring contraction system for valve ring repair, characterized in that: including a locking assembly; The locking assembly includes a box body, a locking structure and an adjustment structure; The locking structure is arranged in the box body, and two ends of the locking structure extend out of the box body, and the locking structure is slidably connected with the box body to adjust the distance between the two ends of the locking structure; The adjusting structure passes through the box body and the locking structure, and the adjusting structure is rotatably connected with the locking structure to control the horizontal movement of the locking structure; Removably connected anchors are provided at both ends of the locking structure. The anchors are used to be nailed into the valve ring tissue. The two anchors are close to each other to contract the valve ring tissue.

2. A ring contraction system for valve ring repair according to claim 1, characterized in that: The retraction system also includes a sheath and a positioning assembly; The positioning assembly is disposed in the sheath tube, and the positioning assembly is slidably connected to the sheath tube; The positioning assembly comprises a first positioning tube, a second positioning tube and a first center cable which are sleeved in sequence from outside to inside, the first center cable is detachably connected to the adjustment structure, and the first center cable is used to move the locking assembly; The second positioning tube is cooperatively connected with the adjustment structure, and is used to control the rotation of the adjustment structure. The first positioning tube is cooperatively connected with the box body, and is used to control the rotation of the locking assembly to adjust the nailing position of the anchor.

3. A ring contraction system for valve ring repair according to claim 2, characterized in that: The ring contraction system further comprises a nailing assembly, which is disposed in the sheath tube and is slidably connected to the sheath tube; The nailing assembly includes a nailing bending tube, a nailing spring tube and a second center cable which are sequentially sleeved from the outside to the inside. The nailing assembly is provided with two groups, and the two second center cables are detachably connected to the two ends of the locking structure respectively, and the second center cables are used to guide the anchor nail to be nailed in; The anchor is detachably connected to the end of the nailing spring tube. The nailing spring tube is used to control the anchor to be nailed into the valve ring tissue. The nailing bending adjustment tube is used to control the nailing angle of the anchor.

4. A ring contraction system for valve ring repair according to claim 3, characterized in that: The adjustment structure includes an adjustment wheel; A protruding first gear groove is provided on the side wall of the adjusting wheel, the first gear groove is meshedly connected with the locking structure, and a protruding first limit block is provided on one end of the adjusting wheel, the first limit block is cooperatively connected with the second positioning tube; When the adjusting wheel is inserted into the box body, both ends of the adjusting wheel extend out of the box body, the first gear groove is located in the box body, and the first gear groove limits the axial movement of the adjusting wheel; When the second positioning tube rotates, the second positioning tube collides with the first limiting block to rotate the adjusting wheel, and the first gear groove rotates to horizontally move the locking structure.

5. A ring contraction system for valve ring repair according to claim 4, characterized in that: The adjustment structure also includes a locking column and a first limiting pin; The locking column axially penetrates the adjusting wheel, the first limiting pin radially penetrates the adjusting wheel and the locking column, the locking column is located in the adjusting wheel, and the locking column is movably connected to the adjusting wheel, and the locking column is threadedly connected to the first center cable; A first sliding groove is provided on the side wall of the adjusting wheel, the first sliding groove extends along the axial direction of the adjusting wheel, the first sliding groove is used for the first limiting pin to pass through, and a plurality of second limiting blocks are provided at the bottom of the box body, and the plurality of second limiting blocks are evenly arranged along the circumference of the adjusting wheel; When the adjusting wheel is inserted into the box body, the first sliding groove extends out of the box body, and the first sliding groove and the second limiting block are located on the same side of the box body; When the first limiting pin moves along the first sliding slot to between the two second limiting blocks, the movement of the locking structure is locked.

6. A ring contraction system for valve ring repair according to claim 5, characterized in that: The locking structure comprises a first locking arm and a second locking arm; The first locking arm and the second locking arm are spaced apart from each other and arranged in parallel, and the spaced area is used for the adjusting wheel to pass through, and when the adjusting wheel passes through, the first locking arm and the second locking arm are respectively in contact with the first gear groove; A second slide groove is arranged on the first locking arm, a third slide groove is arranged on the second locking arm, and second limit pins are arranged at both ends of the box body. Two second limit pins pass through the second slide groove and the third slide groove correspondingly. The second limit pin is slidably connected with the second slide groove and the third slide groove. The second slide groove and the third slide groove limit the movement of the first locking arm and the second locking arm.

7. A ring contraction system for valve ring repair according to claim 6, characterized in that: A limit plate is also provided in the box body, the limit plate abuts against a side of the first locking arm and the second locking arm away from the adjusting wheel, and the limit plate is used to limit the first locking arm and the second locking arm from rotating along the second limit pin.

8. The ring contraction system for valve ring repair according to claim 6, characterized in that: The locking structure also includes an anchor rotating block; The anchor rotating blocks are respectively arranged at ends of the first locking arm and the second locking arm that are away from each other, the anchor rotating blocks are rotatably connected to the first locking arm and the second locking arm, and the anchor rotating blocks are threadedly connected to the second center cable.

9. The ring contraction system for valve ring repair according to claim 7, characterized in that: The box body comprises an upper box body and a lower box body, and the upper box body and the lower box body are fixedly connected by the second limiting pin; The second limiting block is arranged on a surface of the lower box body away from the upper box body, and the limiting plate is arranged on a surface of the lower box body facing the upper box body.

10. A ring contraction system for valve ring repair according to claim 9, characterized in that: A first through hole is provided on the upper box body, and the first through hole is used for the adjusting wheel to pass through; A plurality of first limiting grooves are arranged at the edge of the first through hole, and the plurality of first limiting grooves are evenly arranged along the circumference of the first through hole; a plurality of third limiting blocks are arranged at the end of the first positioning tube, and the plurality of third limiting blocks are arranged corresponding to the plurality of first limiting grooves, and the third limiting blocks have the same outer contour as the first limiting grooves; When the third limiting block is located in the first limiting groove, the first positioning tube moves to control the movement of the locking structure.

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