Mitral valve repair clamp convenient to push

Abstract

The invention belongs to the technical field of mitral valve repair clamps convenient to push, and particularly relates to a mitral valve repair clamp convenient to push, which comprises an outer sleeve, hollowed-out parts are arranged on two sides of an outer cambered surface of the outer sleeve, extending ends are arranged at the middle ends of the hollowed-out parts on two sides of the outer sleeve, and one side of each extending end is provided with an arc-shaped surface matched with the cambered surface of the outer sleeve. The invention relates to an anti-slip hose. Semicircular barbs on one side and the other side are dragged to compress the range of a mitral valve opening, clamping force and positions of an upper clamping arm and a lower clamping arm are adjusted through observation and evaluation before the opening is not completely closed, and then a connecting rod is pulled downwards to be downwards connected with the upper clamping arm and combined with the lower clamping arm, so that the whole mitral valve repair mechanism is formed. And under the condition that one of the two parts is loosened or moved, the other group of structures can adapt to the pathological change of the mitral valve, so that the heart reconstruction process can be stopped or reversed, and the heart can be stably recovered to a more normal form and function.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices, in particular to a mitral valve repair clamp which is easy to push. Background Art

[0002] Mitral valve repair is a cardiac surgical procedure for mitral valve disease. Its main purpose is to restore the normal structure and function of the mitral valve, avoid or delay valve replacement, and treat the prolapsed leaflets, such as removing excess leaflet tissue and suturing the torn parts, so that the leaflets can close normally during heart contraction and reduce regurgitation. It is usually performed by open-chest surgery under general anesthesia. There are also some minimally invasive surgical methods, such as thoracoscopic assisted mitral valve repair surgery, which can reduce surgical trauma.

[0003] A Chinese invention patent publication number CN 113749823 B discloses a mitral valve repair clamp. A mitral valve repair clamp connected to a delivery structure comprises: a clamping structure having a first clamp body and a second clamp body; a sleeve for converging the first clamp body and the second clamp body; a delivery structure having an inner core rod used in conjunction with the clamping structure; a connecting rod is provided at the proximal end of the first clamp body, and the connecting rod comprises: a first connecting section, the distal end of which is connected to the first clamp body; a second connecting section, the distal end of which is connected to the proximal end of the first connecting section, and at least one clamp body connecting part is provided on the outer wall; and the inner core rod is provided with: at least one delivery elastic member, which is openably connected to the clamp body connecting part.

[0004] However, the existing technology and patents have the following problems: mitral valve lesions may change over time, such as further prolapse of the valve leaflets, expansion of the valve ring, etc., and the clamp may not be able to adapt to these changes, resulting in a gradual decline in the repair effect. Long-term heart beating and blood impact may also cause the clamp to loosen or shift, resulting in repair failure and the need for another surgery. The displacement of the clamp may have a certain impact on the hemodynamics of the mitral valve. Summary of the invention

[0005] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0006] The technical solution adopted by the present invention to solve its technical problem is: the mitral valve repair fixture easy to push described in the present invention comprises an outer sleeve, both sides of the outer arc surface of the outer sleeve are provided with hollow parts, the middle ends of the hollow parts on both sides of the outer sleeve are provided with extension ends, one side of the extension end is provided with an arc surface matched with the arc surface of the outer sleeve, a bearing member is fixedly installed at the bottom of the arc surface of the extension end, a bending portion is provided at the bottom of one end of the bearing member, a placement cavity is reserved between the bending portion and the bearing member, a through hole is provided in the middle of one side surface of the bending portion, and a mitral valve repair pushing auxiliary mechanism is connected through the placement cavity of the bearing member; The mitral valve repair push auxiliary mechanism includes a flexible tube that is movably sleeved inside the carrier, a corresponding head is provided at the front end of the flexible tube, a first traction wire is fixedly connected to the middle part of the surface of one side of the corresponding head, one end of the first traction wire passes through the insertion hole and extends into the outer sleeve, a corresponding hole begins to be provided at the end of the flexible tube, one end of the corresponding head is inserted into the corresponding hole, a rectangular groove A begins to be provided on the outer arc surface of the flexible tube, the interior of the flexible tube is a hollow structure, a semicircular arc-shaped barb is connected to the inner hollow structure of the flexible tube, a ventilation tube is movably sleeved on the outer arc surface of the flexible tube, magnetic kits are provided on both sides of the outer arc surface of the ventilation tube, a rectangular groove B is opened on the outer arc surface of the ventilation tube, and the barb at one end of the semicircular arc-shaped barb extends to the outside of the rectangular groove B of the ventilation tube.

[0007] There are several rectangular grooves A and B, and there is a gap between them. The outer arc surfaces of the two magnetic sets are movably connected with a second traction wire, one end of the second traction wire is fixedly installed with a traction set, and the inner arc surface of the traction set is fixedly installed with four-corner barbs, which are compatible with the semicircular arc barbs.

[0008] The inner arc surface of the outer sleeve is movably connected to the inner sleeve, and arc grooves A are provided on both sides of the outer arc surface of the inner sleeve. One end of the second traction wire passes through the arc groove A, and the inner arc surface of the inner sleeve is movably connected to the inner sleeve, and arc grooves B are provided on both sides of the outer arc surface of the inner sleeve. The arc grooves A and arc grooves B are adapted to each other.

[0009] A clamping pit is provided at one edge of the inner arc surface of the inner sleeve, and a tightening step end is provided on one side of the inner sleeve close to the clamping pit, and the diameter of the tightening step end is larger than the diameter of the inner sleeve itself.

[0010] A mitral valve repair pushing clamp mechanism is movably connected to the surface of one side of the stepped end; The mitral valve repair pushing clamp mechanism includes a Z-shaped clamping plate that is movably clamped into a clamping pit, the tail of the Z-shaped clamping plate is a lap end, a trapezoidal abutment portion is provided in the middle of one side surface of the Z-shaped clamping plate, and an arc-shaped curved portion is provided on one side of the Z-shaped clamping plate close to the trapezoidal abutment portion.

[0011] One side of the trapezoidal clamping portion is movably abutted against the clamping pit, the arc-shaped curved portion is movably adapted to the clamping step end, and the tail overlapping end of the Z-shaped clamping plate is movably connected through a conical sleeve, and V-shaped grooves are provided on both sides of the outer arc surface of the conical sleeve, and chamfers are provided at the edges of the V-shaped grooves.

[0012] The interior of the V-shaped groove is movably connected to the overlapping end of the tail of the Z-shaped clamping plate, and a fixing groove is opened at the edge of one side surface of the Z-shaped clamping plate. There are two Z-shaped clamping plates, and the inner arc surface of the fixing groove is movably connected with a lower clamping arm. A connecting part is provided at the bottom of the inner arc surface of the lower clamping arm, and release protrusions are provided on both sides of the connecting part.

[0013] One end of the release protrusion passes through the interior of the fixing groove, a connecting hole is opened in the middle of the front end of the connecting part, a ball-shaped rod is passed through one end of the connecting hole, and a spherical joint on one side of the ball-shaped rod is adapted to the inner side of the release protrusion.

[0014] The tail end of the ball-shaped rod is fixedly connected to the conical kit, a connecting rod is inserted into the interior of the ball-shaped rod, an upper clamping arm is fixedly installed at one end of the connecting rod, the outward expansion end of the upper clamping arm is adapted to the lower clamping arm, and the outer arc surface of the ball-shaped rod is movably clamped with a pulling base block.

[0015] The upper surface of the pulling base block is provided with an elastic end, one end of the pulling base block begins to have a card connection groove, the other end of the pulling base block is provided with an elastic hook-shaped part, the tail of the elastic hook-shaped part is placed on the spherical outer arc surface of the ball head rod, and the pulling base block is an arched structure as a whole.

[0016] The beneficial effects of the present invention are as follows: 1. The easy-to-push mitral valve repair clamp described in the present invention is assisted by a second traction wire, and then the four-cornered barbs at one end of the second traction wire are pierced into the edge of the valve leaflet. After being connected and fixed, the mitral valve repair pushing auxiliary mechanism as a whole is translated. The four-cornered barbs of the second traction wire remain in position under the movement of the flexible tube, but the length of the second traction wire is extended. Subsequently, the moving flexible tube contacts the semicircular barbs on the other side to the appropriate position of the membrane and then contracts to an appropriate size, thereby effectively correcting mitral valve regurgitation and reducing the reflux of blood from the left ventricle to the left atrium.

[0017] 2. The easy-to-push mitral valve repair clamp described in the present invention circles the range of the mitral valve and then pushes the inner sleeve to make its lower clamp arm fit against the bottom of the mitral valve, and then pushes the upper clamp arm on the connecting rod to fit against the top of the mitral valve. The connecting rod can also be rotated to ensure that the rotation angle of the upper clamp arm is the same as the position of the open and closed mitral valve. Therefore, after observing and evaluating the clamping force and position of the upper clamp arm and the lower clamp arm, the connecting rod is pulled downward to make it and the upper clamp arm downward and connected with the lower clamp arm, so that repair can be performed without removing the patient's own valve, retaining the physiological structure and function of the valve, reducing surgical damage to the heart, and reducing surgical risks and the incidence of complications.

[0018] 3. The easy-to-push mitral valve repair clamp described in the present invention can also deviate backwards when the ball-shaped rod connected to the rear end of the base block is pulled, thereby generating a chain reaction. The ball portion at the front end of the ball-shaped rod can release the release protrusion on the abutment, allowing it to be in the "V" shape under the connection, and the recovery of elastic properties allows it to form a level with the inside of the lower clamping arm. After the release protrusion is restored, the front end of the Z-shaped clamping plate that is clamped on one side will be disengaged, and the rear end of the ball-shaped rod that extends to the outside will be rotated, and the conical kit fixed on it will rotate synchronously, so that the V-grooves on both sides of the conical kit release the connection between the end of the Z-shaped clamping plate and the V-groove under the power of rotation. Therefore, the fixed points at both ends of the entire Z-shaped clamping plate will be disengaged from the abutment on the inner sleeve and the clamping pit after contact. Therefore, the entire inner sleeve is retrieved, and the upper clamping arm and the lower clamping arm remain in the preset position to clamp the valve leaflet to achieve the purpose of repairing the heart valve. 4. The easy-to-push mitral valve repair clamp described in the present invention uses the semicircular hooks on the soft tube to pull the semicircular hooks on one side and the other side to compress the range of the mitral valve opening. At the same time, before the opening is completely closed, the clamping force and position of the upper clamp arm and the lower clamp arm are adjusted through observation and evaluation, and then the connecting rod is pulled downward to make it and the upper clamp arm downward and connected with the lower clamp arm. Therefore, the entire mitral valve repair mechanism forms a fully enclosed repair. If one of the two becomes loose or moves, the other group of structures can adapt to the pathological changes of the mitral valve to prevent or reverse the process of cardiac remodeling, so that the heart can be stably restored to a more normal shape and function. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below in conjunction with the accompanying drawings.

[0020] Figure 1 It is a schematic diagram of the overall structure of the mitral valve repair fixture that is easy to push in accordance with the present invention; Figure 2 It is a schematic diagram of the disassembled front end structure of the mitral valve repair clamp that is easy to push according to the present invention; Figure 3 It is a schematic diagram of the clamp structure of the mitral valve repair clamp that is easy to push in the present invention; Figure 4 2. It is a schematic diagram of the structure of the mitral valve repair clamp that is easy to push according to the present invention from a front view; Figure 5 It is a schematic diagram of the auxiliary structure of the mitral valve repair clamp that is easy to push in the present invention; Figure 6 It is a schematic diagram of the front end cross-sectional structure of the mitral valve repair fixture that is easy to push according to the present invention; Figure 7 It is a schematic diagram of the disassembly structure of the clamp of the mitral valve repair clamp that is easy to push according to the present invention; Figure 8It is a schematic diagram of the connection cross-sectional structure of the mitral valve repair clamp that is easy to push according to the present invention; Fig. 9 It is a schematic diagram of the structure of the lower clamp arm of the mitral valve repair clamp that is easy to push; Fig.10 It is a schematic diagram of the upper clamp arm structure of the mitral valve repair clamp that is easy to push according to the present invention.

[0021] In the figure: 1. outer sleeve; 101. extension end; Carrying member; 201, bending portion; 202, insertion hole; Mitral valve repair push assisting mechanism; 301, flexible tube; 302, corresponding head; 303, first traction wire; 304, rectangular groove A; 305, semicircular arc barb; 306, air permeable tube; 307, magnetic kit; 308, rectangular groove B; Second traction wire; 401, traction kit; 402, four-corner barbs; Inner sleeve; 501, arc groove A; Inner sleeve; 601, arc groove B; 602, clamping pit; 603, abutting against the stepped end; 7. Mitral valve repair push clamp mechanism; 701. Z-shaped clamping plate; 702. trapezoidal abutment portion; 703. arc-shaped curved portion; 704. conical kit; 705. V-shaped groove; 706. fixing groove; 707. lower clamp arm; 7071. connecting portion; 7072. release protrusion; 7073. connecting hole; 708. ball-shaped rod; 709. connecting rod; 710. upper clamp arm; 711. pulling base block; 7111. elastic end; 7112. card connection groove; 7113. elastic hook portion. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0023] Embodiment 1: Figure 1 , Figure 2 , Figure 4 and Figure 5As shown, it includes an outer sleeve 1, both sides of the outer arc surface of the outer sleeve 1 are provided with hollow parts, the middle ends of the hollow parts on both sides of the outer sleeve 1 are provided with extension ends 101, one side of the extension end 101 is provided with an arc surface adapted to the arc surface of the outer sleeve 1, and a carrier 2 is fixedly installed at the bottom of the arc surface of the extension end 101, a bending portion 201 is provided at the bottom of one end of the carrier 2, a placement cavity is reserved between the bending portion 201 and the carrier 2, an insertion hole 202 is provided in the middle of one side surface of the bending portion 201, and a mitral valve repair push auxiliary mechanism 3 is connected through the placement cavity of the carrier 2, and the mitral valve repair push auxiliary mechanism 3 includes a flexible tube 301 movably sleeved inside the carrier 2, a corresponding head 302 is provided at the front end of the flexible tube 301, and a first traction wire 303 is fixedly connected to the middle of one side surface of the corresponding head 302, one end of the first traction wire 303 penetrates into the insertion hole 202 and extends into the outer sleeve 1, and a corresponding hole begins to be provided at the end of the flexible tube 301 , one end of the corresponding head 302 is inserted into the corresponding hole, the outer arc surface of the flexible tube 301 begins to have a rectangular groove A304, the inner hollow structure of the flexible tube 301, the inner hollow structure of the flexible tube 301 is connected with a semicircular arc hook 305, the outer arc surface of the flexible tube 301 is movably connected with a vent tube 306, both sides of the outer arc surface of the vent tube 306 are provided with a magnetic set 307, the outer arc surface of the vent tube 306 is provided with a rectangular groove B308, the semicircular arc hook 3 05 The barb at one end extends to the outside of the rectangular groove B308 of the air vent tube 306. The number of rectangular grooves A304 and B308 is several, and there is a gap between each two. The outer arc surfaces of the two magnetic kits 307 are movably connected with the second traction wire 4, and a traction kit 401 is fixedly installed at one end of the second traction wire 4. The inner arc surface of the traction kit 401 is fixedly installed with four-corner barbs 402, and the four-corner barbs 402 are compatible with the semicircular arc-shaped barbs 305.

[0024] In this embodiment, after the patient receives general anesthesia, the doctor selects a suitable incision position according to the surgical method. Minimally invasive surgery uses a small intercostal incision to intervene through the atrium via a catheter, and carefully observes the lesion of the mitral valve. The lesion site of the mitral valve is determined before the insertion of the catheter, and after confirming that the passage is unobstructed across the valve, a repair clamp channel is established. Then, the corresponding head 302 at one end of the soft tube 301 extends outward from the inside of the catheter until the entire soft tube 301 is completely protruded from the inside of the catheter channel. Then, the doctor pulls the first traction wire 303 to make one end of the corresponding head 302 of the soft tube 301 inward under the action of traction. Bending, because the end of the first traction wire 303 is inserted into the insertion hole 202 in the supporting member 2, and one end is concentrated inside the catheter channel, so during the pulling of the first traction wire 303, one end of the flexible tube 301 will move along the insertion direction of the first traction wire 303, and the bending portion 201 at one end of the supporting member 2 will be pre-connected and fixed with the end of the flexible tube 301, and a space for plugging with the corresponding head 302 will be reserved, so that the flexible tube 301 will come out from the horizontal inner sleeve 5, and the shape of the flexible tube 301 can be changed under the pulling of the first traction wire 303, and the overall repair range of the mitral valve is circled.

[0025] After the flexible tube 301 is attached to the mitral valve notch, the flexible tube 301 can be slightly rotated to rotate inside the internal air tube 306, and the magnetic kits 307 are connected to the outer sides of the air tube 306. The support of the magnetic kit 307 is connected by the magnetic connection of the second traction wire 4. Therefore, the air tube 306 will not rotate synchronously when the flexible tube 301 moves. During the rotation of the flexible tube 301, the semicircular barb 305 hidden in the middle is in a state of waiting to be released on the inner wall of the flexible tube 301, and the barb on the surface is released. Placed in the gap between the two rectangular grooves B308, the semicircular arc-shaped barb 305 protruding from one end of the rectangular groove A304 will be adjusted away from the blocking gap at the front end due to the correspondence between the rectangular groove B308 on one side and the rectangular groove A304 when the flexible tube 301 rotates counterclockwise, so that the elastic barb on one side of the semicircular arc-shaped barb 305 is released and extends to the outside of the vent tube 306. When the flexible tube 301 rotates clockwise, the barb on the other side of the semicircular arc-shaped barb 305 is also released after the rectangular groove B308 corresponds to the rectangular groove A304.

[0026] When the semicircular hook 305 on one side punctures into the inside of the membrane, in order to allow the semicircular hook 305 on the other side to accurately hook the other side of the mitral valve, it is necessary to use the second traction wire 4 for assistance, and then the four-corner hook 402 at one end of the second traction wire 4 is punctured at the edge of the valve leaflet. After connection and fixation, the mitral valve repair pushing auxiliary mechanism 3 is translated as a whole. The four-corner hook 402 of the second traction wire 4 remains in the same position under the movement of the flexible tube 301, but the length of the second traction wire 4 is extended. Subsequently, the moving flexible tube 301 contacts the semicircular hook 305 on the other side to the appropriate position of the membrane and then contracts to an appropriate size, thereby effectively correcting mitral regurgitation and reducing the reflux of blood from the left ventricle to the left atrium.

[0027] After the repair is completed, the magnetic connection between the traction kit 401 and the magnetic kit 307 can be released. After the second traction wire 4 is disconnected, the entire mitral valve repair push auxiliary mechanism 3 will be fixedly connected to the mitral valve, and smoothness can be guaranteed during pushing, and no unnecessary parts will be left inside the atrium.

[0028] Example 2: Comparative Example 1, another embodiment of the present invention is: like Figure 3 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 and Fig.10As shown, the inner arc surface of the outer sleeve 1 is movably connected with the inner sleeve 5, and arc grooves A501 are provided on both sides of the outer arc surface of the inner sleeve 5. One end of the second traction wire 4 passes through the arc groove A501, and the inner arc surface of the inner sleeve 5 is movably connected with the inner sleeve 6. Arc grooves B601 are provided on both sides of the outer arc surface of the inner sleeve 6. The arc grooves A501 are adapted to the arc grooves B601. A clamping pit 602 is provided at the edge of one side of the inner arc surface of the inner sleeve 6. A tightening step end 603 is provided on one side of the inner sleeve 6 close to the clamping pit 602. The diameter of the tightening step end 603 is larger than the diameter of the inner sleeve 6 itself. A mitral valve repair push clamp is movably connected to the surface of one side of the tightening step end 603 Structure 7, the mitral valve repair pushing clamp mechanism 7 includes a Z-shaped clamping plate 701 that is movably clamped into the clamping pit 602, the tail of the Z-shaped clamping plate 701 is an overlapping end, a trapezoidal abutting portion 702 is provided in the middle of one side surface of the Z-shaped clamping plate 701, and an arc-shaped curved portion 703 is provided on the side of the Z-shaped clamping plate 701 close to the trapezoidal abutting portion 702, one side of the trapezoidal abutting portion 702 is movably abutted against the clamping pit 602, and the arc-shaped curved portion 703 is movably adapted to the abutting step end 603, and the tail overlapping end of the Z-shaped clamping plate 701 is movably connected with a conical set 704, and V-shaped grooves 705 are provided on both sides of the outer arc surface of the conical set 704, and chamfers are provided at the edges of the V-shaped grooves 705. The interior of the V-shaped groove 705 is movably connected to the lap end of the tail of the Z-shaped clamping plate 701. A fixing groove 706 is provided at the edge of one side surface of the Z-shaped clamping plate 701. There are two Z-shaped clamping plates 701. The inner arc surface of the fixing groove 706 is movably connected with a lower clamping arm 707. A connecting portion 7071 is provided at the bottom of the inner arc surface of the lower clamping arm 707. Release protrusions 7072 are provided on both sides of the connecting portion 7071. One end of the release protrusion 7072 penetrates into the interior of the fixing groove 706. A connecting hole 7073 is provided in the middle of the front end of the connecting portion 7071. A ball-shaped rod 708 is penetrated and connected at one end of the connecting hole 7073. The spherical joint on one side of the ball-shaped rod 708 is connected to the release protrusion 7072. 072 is adapted to the inner side of the ball head rod 708, the tail end of the ball head rod 708 is fixedly connected to the conical set 704, the ball head rod 708 is inserted with a connecting rod 709, one end of the connecting rod 709 is fixedly installed with an upper clamping arm 710, the outer expansion end of the upper clamping arm 710 is adapted to the lower clamping arm 707, the outer arc surface of the ball head rod 708 is movably connected with a pulling base block 711, the upper surface of the pulling base block 711 is provided with an elastic end 7111, one end of the pulling base block 711 begins to have a card connection groove 7112, the other end of the pulling base block 711 is provided with an elastic hook portion 7113, the tail of the elastic hook portion 7113 is placed on the spherical outer arc surface of the ball head rod 708, and the pulling base block 711 is an arched structure as a whole After the soft tube 301 circles the range of the mitral valve, it not only limits the stability of the mitral valve repair pushing clamp mechanism 7, but also plays a guiding role. Because the inner sleeve 6 is connected to the inner sleeve 5, the outer sleeve 1, the inner sleeve 5 and the inner sleeve 6 will be completely withdrawn after the pushing is completed. After the mitral valve range is circled, the inner sleeve 6 is pushed to make its lower clamp arm 707 fit to the bottom of the mitral valve, and then the upper clamp arm 710 on the pushing connecting rod 709 is fit to the top of the mitral valve. The connecting rod 709 can also be rotated to ensure that the rotation angle of the upper clamp arm 710 is the same as the position of the open and closed mitral valve. Therefore, after observing and evaluating the clamping force and position of the upper clamp arm 710 and the lower clamp arm 707, the connecting rod 709 is pulled downward to make it and the upper clamp arm 710 downward, and combined with the lower clamp arm 707. Repair can be performed without removing the patient's own valve, retaining the physiological structure and function of the valve, reducing surgical damage to the heart, and reducing surgical risks and the incidence of complications.

[0029] After the pushing and repairing are completed, when the upper clamping arm 710 driven by the connecting rod 709 moves backward, it will squeeze the pulling base block 711, because the card connection groove 7112 at one end of the pulling base block 711 is slidably engaged on the connecting rod 709, and the elastic hook portion 7113 at the other end is movably engaged with the spherical joint on the rear end ball head rod 708. Therefore, during the pulling process of the connecting rod 709, the upper clamping arm 710 needs to be close to the lower clamping arm 707 and will continuously squeeze the pulling base block 711 during the displacement process, so that its horizontal shape is changed into an arch shape. At the same time, the ball head rod 708 connected to the rear end of the base block will also deviate backward, thus producing a chain reaction, and the ball portion at the front end of the ball head rod 708 will release the release protrusion 7072 abutting against it, allowing it to From the "V" shape under the connection, the recovery of elastic properties allows it to form a horizontal level with the inside of the lower clamping arm 707. After the release protrusion 7072 is restored, the front end of the Z-type clamping plate 701 clamped on one side will be disengaged, and the rear end will be rotated to extend to the end of the ball-shaped rod 708 on the outside, and the conical kit 704 fixed thereon will rotate synchronously, so that the V-grooves 705 on both sides of the conical kit 704 release the connection between the end of the Z-type clamping plate 701 and the V-grooves 705 under the power of rotation. Therefore, the fixed points at both ends of the entire Z-type clamping plate 701 will be disengaged from the abutment on the inner sleeve 6 and the clamping pit 602 after contact. Therefore, the entire inner sleeve 6 is retrieved, and the upper clamping arm 710 and the lower clamping arm 707 remain in the preset position to clamp the leaflets to achieve the purpose of repairing the heart valve.

[0030] The semicircular hooks 305 on the soft tube 301 are used to compress the range of the mitral valve opening by pulling the semicircular hooks 305 on one side and the other side. At the same time, the clamping strength and position of the upper clamp arm 710 and the lower clamp arm 707 are adjusted through observation and evaluation before the opening is completely closed. Then, the connecting rod 709 is pulled downward so that it and the upper clamp arm 710 are downward and connected with the lower clamp arm 707. Therefore, the entire mitral valve repair mechanism forms a fully enclosed repair. If one of the two becomes loose or moves, the other set of structures can adapt to the pathological changes of the mitral valve to prevent or reverse the process of cardiac remodeling, so that the heart can be stably restored to a more normal shape and function.

[0031] like Figures 1 to 10 As shown, Working principle: After the patient receives general anesthesia, the doctor selects the appropriate incision location according to the surgical method. Minimally invasive surgery uses a small intercostal incision to intervene through the atrium via a catheter, and carefully observes the lesion of the mitral valve. The insertion of the catheter first determines the lesion site of the mitral valve, and after confirming that the passage is unobstructed across the valve, a channel for the repair clamp is established. Then, the corresponding head 302 at one end of the soft tube 301 extends outward from the inside of the catheter until the entire soft tube 301 is completely protruded from the inside of the catheter channel. Then, the doctor pulls the first traction wire 303 to make one end of the corresponding head 302 of the soft tube 301 bend inward under the action of traction. Because the end of the first traction wire 303 is inserted into the insertion hole 202 in the carrier 2, and one end is concentrated inside the catheter channel, During the pulling of the first traction wire 303, one end of the flexible tube 301 will move in the direction of the insertion of the first traction wire 303, and the bent portion 201 at one end of the carrier 2 will be pre-connected and fixed with the end of the flexible tube 301, and a space will be reserved for plugging with the corresponding head 302, so that the flexible tube 301 will come out from the horizontal inner sleeve 5. The shape of the flexible tube 301 can be changed under the pulling of the first traction wire 303 to circle the repair range of the mitral valve as a whole. During the rotation of the flexible tube 301, the semicircular barb 305 hidden in the middle is in a state of waiting to be released on the inner wall of the flexible tube 301, and the barb on the surface is placed in the gap between the two rectangular grooves B308, and protrudes from the rectangular groove A308 when the flexible tube 301 rotates counterclockwise. The semicircular hook 305 at one end of 4 will be adjusted away from the blocking gap at the front end due to the corresponding rectangular groove B308 and rectangular groove A304 on one side, so that the elastic hook on one side of the semicircular hook 305 is released and extends to the outside of the vent tube 306. When the flexible tube 301 rotates clockwise, the hook on the other side of the semicircular hook 305 is also released after the rectangular groove B308 corresponds to the rectangular groove A304, and then the four-corner hook 402 at one end of the second traction wire 4 is pierced into the edge of the valve leaflet. After the connection is fixed, the mitral valve repair push auxiliary mechanism 3 is translated as a whole. The second traction wire 4 will not change the position of the four-corner hook 402 under the movement of the flexible tube 301, but the length of the second traction wire 4 is extended, and then the moving flexible tube 301 will move the semicircular hook 305 on the other side. After the arc-shaped barb 305 contacts the appropriate position of the membrane, it shrinks to an appropriate size, thereby effectively correcting mitral valve regurgitation and reducing the situation where blood flows back from the left ventricle to the left atrium. After the soft tube 301 circles the range of the mitral valve, it not only limits the stability of the mitral valve repair pushing clamp mechanism 7, but also plays a guiding role. Because the inner sleeve 6 is connected to the inner sleeve 5, the outer sleeve 1, the inner sleeve 5 and the inner sleeve 6 will be completely withdrawn after the pushing is completed. After the mitral valve range is circled, the inner sleeve 6 is pushed to make its lower clamp arm 707 fit to the bottom of the mitral valve, and then the upper clamp arm 710 on the pushing connecting rod 709 is fit to the top of the mitral valve. The connecting rod 709 can also be rotated to ensure that the rotation angle of the upper clamp arm 710 is the same as the position of the open and closed mitral valve.Therefore, after observing and evaluating the clamping force and position of the upper clamp arm 710 and the lower clamp arm 707, the connecting rod 709 is pulled downward to make it and the upper clamp arm 710 downward, and connected with the lower clamp arm 707, so that the patient's own valve can be repaired without removing it, the physiological structure and function of the valve can be retained, the damage to the heart caused by the operation can be reduced, and the surgical risk and the incidence of complications can be reduced. The front end of the Z-shaped clamping plate 701 will be disengaged from the clamping, and the rear end will be rotated to extend to the outside of the ball head At the end of the shaped rod 708, the cone-shaped sleeve 704 fixed thereon rotates synchronously, so that the V-shaped grooves 705 on both sides of the cone-shaped sleeve 704 release the connection between the end of the Z-shaped clamping plate 701 and the V-shaped grooves 705 under the power of rotation. Therefore, the fixed points at both ends of the entire Z-shaped clamping plate 701 will be separated from the abutment on the inner sleeve 6 and the clamping pit 602 after contact. Therefore, the entire inner sleeve 6 is retrieved, and the upper clamp arm 710 and the lower clamp arm 707 remain in the preset position to clamp the valve leaflets to achieve the purpose of repairing the heart valve.

[0032] The above-mentioned front, back, left, right, top and bottom are all based on the figures in the specification. Figure 1 As a benchmark, according to the person's observation perspective, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0033] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present invention.

[0034] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A mitral valve repair fixture that is easy to push, characterized by: The outer sleeve (1) comprises an outer sleeve (1), wherein both sides of the outer arc surface of the outer sleeve (1) are provided with hollow parts, and the middle ends of the hollow parts on both sides of the outer sleeve (1) are provided with extension ends (101), and one side of the extension end (101) is provided with an arc surface matching the arc surface of the outer sleeve (1), and a supporting member (2) is fixedly installed at the bottom of the arc surface of the extension end (101), and a bending portion (201) is provided at the bottom of one end of the supporting member (2), and a placement cavity is reserved between the bending portion (201) and the supporting member (2), and a through hole (202) is provided in the middle of the surface of one side of the bending portion (201), and a mitral valve repair push auxiliary mechanism (3) is connected to and penetrated in the placement cavity of the supporting member (2); The mitral valve repair push auxiliary mechanism (3) comprises a flexible tube (301) movably sleeved inside the carrier (2), a corresponding head (302) is provided at the front end of the flexible tube (301), a first traction wire (303) is fixedly connected to the middle of the surface of one side of the corresponding head (302), one end of the first traction wire (303) penetrates into the insertion hole (202) and extends into the outer sleeve (1), a corresponding hole is formed at the end of the flexible tube (301), one end of the corresponding head (302) is inserted into the corresponding hole, and the outer arc of the flexible tube (301) The flexible tube (301) has a rectangular groove A (304) at the beginning, the interior of the flexible tube (301) is a hollow structure, a semicircular arc-shaped barb (305) is connected to the hollow structure inside the flexible tube (301), a ventilating tube (306) is movably sleeved on the outer arc surface of the flexible tube (301), magnetic sets (307) are provided on both sides of the outer arc surface of the ventilating tube (306), a rectangular groove B (308) is opened on the outer arc surface of the ventilating tube (306), and a barb at one end of the semicircular arc-shaped barb (305) extends to the outside of the rectangular groove B (308) of the ventilating tube (306).

2. The easy-to-push mitral valve repair fixture according to claim 1, characterized in that: The number of the rectangular grooves A (304) and the rectangular grooves B (308) is several, and there is a gap between each of them. The outer arc surfaces of the two magnetic sets (307) are movably connected with the second traction wire (4), one end of the second traction wire (4) is fixedly installed with a traction set (401), and the inner arc surface of the traction set (401) is fixedly installed with four-corner barbs (402), and the four-corner barbs (402) are compatible with the semicircular arc-shaped barbs (305) for use.

3. The mitral valve repair fixture that is easy to push according to claim 2, characterized in that: The inner arc surface of the outer sleeve (1) is movably connected to the inner sleeve (5), and arc grooves A (501) are provided on both sides of the outer arc surface of the inner sleeve (5). One end of the second traction wire (4) passes through the arc groove A (501). The inner arc surface of the inner sleeve (5) is movably connected to the inner sleeve (6), and arc grooves B (601) are provided on both sides of the outer arc surface of the inner sleeve (6). The arc grooves A (501) are adapted to the arc grooves B (601).

4. The easy-to-push mitral valve repair fixture according to claim 3, characterized in that: A clamping recess (602) is provided at one edge of the inner arc surface of the inner sleeve (6), and a tightening step end (603) is provided on one side of the inner sleeve (6) close to the clamping recess (602), wherein the diameter of the tightening step end (603) is greater than the diameter of the inner sleeve (6) itself.

5. The easy-to-push mitral valve repair fixture according to claim 4, characterized in that: A mitral valve repair pushing clamp mechanism (7) is movably connected to a surface of one side of the stepped end (603); The mitral valve repair push clamp mechanism (7) comprises a Z-shaped clamping plate (701) movably clamped into the clamping recess (602), the tail of the Z-shaped clamping plate (701) being a lap end, a trapezoidal abutting portion (702) being provided in the middle of one side surface of the Z-shaped clamping plate (701), and an arcuate curved portion (703) being provided on one side of the Z-shaped clamping plate (701) close to the trapezoidal abutting portion (702).

6. The easy-to-push mitral valve repair fixture according to claim 5, characterized in that: One side of the trapezoidal abutting portion (702) is movably abutted against the clamping pit (602), the arc-shaped curved portion (703) is movably matched with the abutting step end (603), the tail lap end of the Z-shaped clamping plate (701) is movably penetrated and connected with a conical sleeve (704), and both sides of the outer arc surface of the conical sleeve (704) are provided with V-shaped grooves (705), and the edges of the V-shaped grooves (705) are chamfered.

7. The easy-to-push mitral valve repair fixture according to claim 6, characterized in that: The interior of the V-shaped groove (705) is movably connected to the lapped end of the tail of the Z-shaped clamping plate (701); a fixing groove (706) is provided at the edge of one side surface of the Z-shaped clamping plate (701); there are two Z-shaped clamping plates (701); a lower clamping arm (707) is movably connected through the inner arc surface of the fixing groove (706); a connecting portion (7071) is provided at the bottom of the inner arc surface of the lower clamping arm (707); and release protrusions (7072) are provided on both sides of the connecting portion (7071).

8. The easy-to-push mitral valve repair fixture according to claim 7, characterized in that: One end of the release protrusion (7072) passes through the interior of the fixing groove (706), a connection hole (7073) is provided in the middle of the front end of the connection portion (7071), one end of the connection hole (7073) passes through and is connected to a ball-shaped rod (708), and a spherical joint on one side of the ball-shaped rod (708) is adapted to the inner side of the release protrusion (7072).

9. The easy-to-push mitral valve repair fixture according to claim 8, characterized in that: The tail end of the ball-shaped rod (708) is fixedly connected to the conical sleeve (704); a connecting rod (709) is inserted into the interior of the ball-shaped rod (708); an upper clamping arm (710) is fixedly mounted on one end of the connecting rod (709); an outwardly expanded end of the upper clamping arm (710) is matched with a lower clamping arm (707); and a pulling base block (711) is movably clamped on the outer arc surface of the ball-shaped rod (708).

10. The easy-to-push mitral valve repair fixture according to claim 9, characterized in that: The upper surface of the pulling base block (711) is provided with an elastic end (7111), one end of the pulling base block (711) begins to have a card connection groove (7112), the other end of the pulling base block (711) is provided with an elastic hook-shaped portion (7113), the tail of the elastic hook-shaped portion (7113) is placed on the spherical outer arc surface of the ball-shaped rod (708), and the pulling base block (711) is an arched structure as a whole.

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