A control structure for a valve regurgitation gathering repair fixture

Abstract

The present invention relates to a control structure of a valve regurgitation gathering repair clamp, and belongs to the field of medical device technology. The valve regurgitation repair clamp includes a clamp body, an upper clamp arm and a lower clamp arm arranged around the clamp body, and the lower clamp arm is provided with a reserved groove for the upper clamp arm to pass through the lower clamp arm; the clamp control structure includes a pulling rope connected to the upper clamp arm and the lower clamp arm and a deformable local deformation section of the lower clamp arm; an overlapping part is provided between the deformed local deformation section and the outer contour of the upper clamp arm to prevent the upper clamp arm from passing through the reserved groove. The present invention can realize the recovery and gathering of the clamp arm and controllable re-release, so that the overall fault tolerance of the operation is high and the operability is high; compared with the prior art, the device structure of the present invention is ingenious, the implant is small, and the process feasibility is high. During the retraction process of the upper and lower clamp arms, the local deformation section of the lower clamp arm is deformed, so that the entire clamp arm can be retracted only by controlling the movement of the upper clamp arm, reducing the difficulty of control during the recovery process.

Description

Technical Field

[0001] The invention relates to a valve regurgitation gathering repair clamp control structure, belonging to the technical field of medical devices. Background Art

[0002] The heart consists of four spaces: the left atrium, the left ventricle, the right atrium, and the right ventricle. They are connected to the aorta, the great veins, the pulmonary artery, and the pulmonary vein. There are valves between the ventricles and the atria. The valve between the left atrium and the left ventricle is the mitral valve, and the valve between the right atrium and the right ventricle is the tricuspid valve. The heart repeatedly contracts and relaxes to make the blood flow. During the heart's contraction period, the blood in the heart moves to the blood vessels. In the right ventricle, the blood moves to the pulmonary artery, and in the left ventricle, the blood moves to the aorta. However, if the valves do not work properly, blood backflow occurs when the heart contracts, and the blood that should flow to the blood vessels moves back to the atria.

[0003] The U.S. patent, publication number US20040049207A1, "Fixing device and method for joining tissues", uses minimally invasive or intravascular interventional surgery to achieve breakthrough clamping and fixation of heart valves, thereby solving the regurgitation problem in the valve area. For a long time afterwards, this solution achieved rapid development due to its technical advantages. At present, the use of valve clamping to treat regurgitation has become one of the mainstream means of treating heart valve regurgitation. On the other hand, the upper and lower clamping arms used in this clamping scheme are difficult to adjust and retract as a whole, which has become a common problem in the implementation of this scheme; it has become a technical problem that needs to be solved urgently in this technical field. Summary of the invention

[0004] The purpose of the present invention is to overcome the defects of the prior art and solve the technical problem of how to conveniently adjust and retract the upper and lower clamping arms.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is to provide a valve regurgitation gathering repair clamp control structure, characterized in that the repair clamp includes a clamp body, at least two sets of clamp arm assemblies arranged around the clamp body, and the clamp arm assembly includes an upper clamp arm and a lower clamp arm; the upper clamp arm and the lower clamp arm are connected to the outer periphery of the clamp body, and the working state of the upper clamp arm and the lower clamp arm is set to a predetermined open and separated state; the lower clamp arm is provided with a reserved groove for the upper clamp arm to pass through the lower clamp arm; the predetermined angle 1 between the upper clamp arm and the clamp body is greater than the predetermined angle 2 between the lower clamp arm and the clamp body, and the upper clamp arm, the lower clamp arm and the clamp body are provided with a clamp control structure; the clamp control structure includes: a recovery and release control end provided on the upper clamp arm and the lower clamp arm, and a local deformation section provided on the lower clamp arm, after the local deformation section is deformed, the upper clamp arm is provided with an overlapping part with the deformed local deformation section, and the overlapping part prevents the upper clamp arm from passing through the reserved groove. When the repair clamp is in use, first release the lower clamp arm, place the valve on the lower clamp arm, and then release the upper clamp arm. Since the predetermined angle of the upper clamp arm is greater than the predetermined angle of the lower clamp arm, the upper clamp arm tightly clamps the lower clamp arm due to the elastic force. When retracting, the local deformation segment is controlled to deform and withdraw the valve. The deformed local deformation segment blocks the upper clamp arm from passing through the reserved groove. At this time, you only need to retract the lower clamp arm to drive the upper clamp arm to retract and complete the retraction action.

[0006] Preferably, the recovery and release control end includes a first wire pulling hole provided on the upper clamp arm and a second wire pulling hole provided on the lower clamp arm, wherein the first wire pulling hole and the second wire pulling hole are used to connect a traction rope. The traction rope is connected to the remote delivery recovery control component, and the retraction and extension of the upper clamp arm and the lower clamp arm are controlled by controlling the retraction and extension of the traction rope.

[0007] Preferably, the local deformation section is set as a section of the frame edge on both sides of the reserved groove of the lower clamp arm, the material hardness of the frame edge is less than the material hardness of other parts of the lower clamp arm, the wire hole on the lower clamp arm is set on the frame edge, and the frame edge is deformed under the action of tension; the shielding section is a convex block set on the upper clamp arm, and the convex block and the deformed frame edge form an overlapping part. In the case of not considering repeated use, the frame edge is directly deformed under the action of tension, and the deformed frame edge clamps the convex block to drive the upper clamp arm to recycle.

[0008] Preferably, an expansion platform is provided on the clamp body, and a hole for passing the pulling rope is provided on the expansion platform, and the pulling ropes are all gathered through the expansion platform. The expansion platform gathers all the pulling ropes and connects them to the remote delivery and recovery control component; wherein, a channel for passing the pulling rope is provided in the clamp body, and the pulling rope connected to the first pulling wire hole passes through the reserved groove, the expansion platform, and the channel of the clamp body in turn to connect to the remote delivery and recovery control component; the second pulling wire hole is provided on both sides of the reserved groove of the lower clamp arm, and the pulling rope connected to the second pulling wire hole passes through the expansion platform and the channel of the clamp body in turn to connect to the remote delivery and recovery control component; the pulling rope connected to the second pulling wire holes on both sides of the reserved groove of the lower clamp arm passes through the expansion platform after converging, and the pulling rope before and after converging is set to Y-shaped; since the center of the lower clamp arm is a reserved groove, the height of the second pulling wire holes on both sides should be kept consistent, and the pulling rope is set to Y-shaped to maintain the stability of the pulling force.

[0009] In some possible implementations, the local deformation section includes folded metal sheets arranged on both sides of the reserved groove of the lower clamp arm and a wire hole for controlling the expansion of the folded metal sheet; the expanded portion of the folded metal sheet forms an overlapping portion with the upper clamp arm. Local deformation can also be achieved by the folded metal sheet, and the wire for manipulating the folded metal sheet is also connected to the remote delivery and recovery control component.

[0010] In some possible implementations, the local deformation section includes slideways provided on both sides of the reserved groove of the lower clamp arm and slides provided in the slideways, an air bag is provided at the rear end of the slide away from the reserved groove, the inflation control slide of the air bag slides into the range of the reserved groove, and the slide that slides into the range of the reserved groove forms an overlapping part with the upper clamp arm. Local deformation can also be achieved by using a slideway and a slide, where the slide is controlled by the air bag, and the air bag is connected to the remote delivery and recovery control component through an air delivery hose.

[0011] In some possible implementations, the local deformation section includes slideways provided on both sides of the reserved groove of the lower clamp arm and a slide plate provided in the slideway, a spring is provided at the rear end of the slide plate away from the reserved groove, a positioning pin is provided on the slide plate to fix the slide plate on the slideway, and a wire hole for pulling out the positioning pin is provided on the positioning pin. After the positioning pin is pulled out, the slide plate slides into the reserved groove under the action of the spring, and the slide plate that slides into the range of the reserved groove forms an overlapping part with the upper clamp arm. The form of the slide plate and the spring can also achieve local deformation, and the wire hole of the positioning pin is connected to the remote delivery and recovery control component through a wire.

[0012] In some possible implementations, the local deformation section includes a deformation memory metal disposed on both sides of the reserved groove of the lower clamp arm and a wire drawing hole for controlling the deformation of the deformation memory metal, and the deformation memory metal forms an overlapping portion with the upper clamp arm after deformation. The deformation memory metal can also achieve local deformation under the triggering of the wire drawing hole, and the wire drawing hole is connected to the remote delivery and recovery control component through a wire drawing.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] The present invention can realize the release and recovery of the corresponding clamp arm through in vitro control by means of a conveying and recovery control component (a conveying handle can be used). The system of the present invention can realize the recovery and gathering of the lower clamp arm and controllable re-release, so that the overall fault tolerance of the operation is high and the operability is high; compared with other similar products, the device of the present invention has a clever structure, less implants, and high process feasibility; during the recovery process of the upper and lower clamp arms, the entire clamp arm can be recovered by simply controlling the movement of the upper clamp arm through the deformation of the reserved groove of the lower clamp arm, reducing the difficulty of control during the recovery process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is an overall schematic diagram of the clamp without the pulling rope in the embodiment of the present invention;

[0016] Figure 2 It is an overall schematic diagram of a clamp control structure with a pulling rope in an embodiment of the present invention;

[0017] Figure 3 A schematic diagram of a clamp arm of a clamp control structure in an embodiment of the present invention in a fully extended state;

[0018] Figure 4 A schematic diagram of a clamp upper clamp arm of a clamp control structure in an embodiment of the present invention;

[0019] Figure numerals: 1. clamp body; 2. expansion platform; 11. upper clamp arm; 12. lower clamp arm; 111. first wire pulling hole; 122. second wire pulling hole; 114. barb; 121. reserved groove; 21. channel. DETAILED DESCRIPTION

[0020] In order to make the present invention more clearly understood, a preferred embodiment is described in detail with reference to the accompanying drawings as follows:

[0021] like Figure 1-4As shown, the present invention provides a control structure of a valve regurgitation gathering repair clamp, the repair clamp is delivered to the valve through a delivery and recovery control component, the repair clamp comprises a clamp body 1, an upper clamp arm 11 and a lower clamp arm 12 arranged around the clamp body 1, the upper clamp arm 11 and the lower clamp arm 12 are connected to the outer periphery of the clamp body 1 at their far ends away from the operator, and the upper clamp arm 11 and the lower clamp arm 12 are arranged at their proximal ends close to the operator in an open and separated state; a reserved groove 121 for the upper clamp arm 11 to pass through the lower clamp arm 12 is provided on the lower clamp arm 12; the upper clamp arm An open angle 1 is provided between the upper clamp arm 11 and the clamp body 1, and an open angle 2 is provided between the lower clamp arm 12 and the clamp body 1, the angle of the angle 1 is greater than the angle of the angle 2, and a clamp control structure is provided on the upper clamp arm 11, the lower clamp arm 12 and the clamp body 1; the clamp control structure includes a pulling rope connected to the upper clamp arm 11 and the lower clamp arm 12 and a deformable lower clamp arm reserved groove 121; an overlapping part is provided between the deformed lower clamp arm reserved groove 121 and the outer contour of the upper clamp arm 11 to prevent the upper clamp arm 11 from passing through the reserved groove 121. An expansion platform 2 is sleeved on the clamp body 1, and the pulling rope is connected to the conveying and recovery control component through the expansion platform 2. The expansion platform 2 is arranged on the side of the connection between the upper and lower clamp arms and the clamp body 1 close to the operator. The expansion platform 2 is provided with a channel 21 for passing the pulling rope. The upper clamp arm 11 is provided with a first wire pulling hole 111, and the lower clamp arm 12 is provided with a second wire pulling hole 122; the first wire pulling hole 111 and the second wire pulling hole 122 are provided with a pulling rope for pulling the upper clamp arm 11 and the lower clamp arm 12 for recovery. The clamp body 1 is provided with a channel for passing the pulling rope, and the pulling rope is connected to the conveying and recycling control component through the first wire pulling hole 111 provided on the upper clamp arm 11, the reserved groove 121, and the channel of the clamp body in sequence. The pulling rope is connected to the conveying and recycling control component through the second wire pulling hole 122 provided on the lower clamp arm 12, the expansion table 2, and the channel of the clamp body in sequence. The second wire pulling holes 122 are respectively provided on both sides of the reserved groove 121 near one end of the clamp body of the lower clamp arm 12, and a pulling rope is provided between two adjacent second wire pulling holes 122 on adjacent lower clamp arms 12 and the channel 21 of the expansion table 2. A hole 21 for passing a pulling rope is provided on the expansion platform 2 between two adjacent second wire holes 122 on the adjacent lower clamping arms 12; the pulling rope between the hole 21 and the two second wire holes 122 is set in a Y shape. The reserved groove 121 is provided with a frame that changes position after deformation to prevent the upper clamping arm from passing through the lower clamping arm.

[0022] Example

[0023] like Figures 1 to 4The control structure of the valve regurgitation gathering repair clamp is shown, and the clamp body 1 is provided with three pairs of upper and lower clamp arms along the central axis, and the upper clamp arm 11 is provided with a first wire hole 111 for controlling the lifting and lowering of the upper clamp arm 11; three barbs 114 are respectively provided on both sides of the upper clamp arm 11, and the angle between the barbs 114 and the plane of the upper clamp arm 11 is between 45° and 90°; in order to improve the controllability of the clamp arm, the surface of the upper clamp arm 11 is designed to be square, circular or elliptical hollowing while ensuring strength, and the hollowing can be distributed in a grid. When the upper clamp arm 11 moves, it passes through the undeformed reserved groove 121 of the lower clamp arm 12, and the gap size between the upper and lower clamp arms is selected to be between 0.1-0.5mm.

[0024] The clamp body 1 is cut and shaped from a single nickel-titanium tube (or stainless steel tube or other tubes with certain rigidity). The distal end of the clamp body 1 is cut into three groups (at least two groups) of clamp arms, and the proximal end is the uncut part of the anchoring component, which is in a complete tubular shape.

[0025] A protrusion is separately provided in the middle of the upper clamp arm 11, and a through first wire-pulling hole 111 is provided on the protrusion for releasing and recovering the upper clamp arm 11. To reduce the stress when the upper clamp arm 11 is released and recovered, the proximal part of the upper clamp arm 11 near the clamp body 1 is hollowed out. The angle between the surface of the upper clamp arm 11 when unfolded and the central axis of the clamp body 1 is between 60° and 90°.

[0026] The lower clamp arm 12 is provided with a hollow reserved groove 121, and the upper clamp arm 11 can pass through or be accommodated in the undeformed reserved groove 121. Second wire drawing holes 122 are respectively provided on both sides of the reserved groove 121 near the middle. The distal end of the upper clamp arm 11 overlaps and corresponds to the distal end of the deformed lower clamp arm 12. When the frame edges on both sides of the reserved groove 121 of the lower clamp arm 12 are deformed and expanded outward under the pulling of the pull rope, the transverse frame portion at the distal end of the lower clamp arm 12 will cross and overlap with the distal end portion of the upper clamp arm 11. When the upper clamp arm 11 is recovered, the transverse frame portion at the distal end of the lower clamp arm 12 is stressed, and driven by the upper clamp arm 11, the lower clamp arm 12 is recovered to the side wall of the clamp body 1. The angle between the surface of the undeformed lower clamp arm 12 when it is unfolded and the central axis of the clamp body 1 is between 50° and 80°.

[0027] The upper clamp arm 11 and the lower clamp arm 12 have different predetermined opening angles. The predetermined angle of the upper clamp arm 11 is greater than the predetermined angle of the lower clamp arm 12. The predetermined angle between the upper clamp arm and the lower clamp arm is 10° to 20°. Maintaining a certain cross angle between the upper and lower clamp arms can ensure that the clamp has sufficient clamping force on the valve when anchoring.

[0028] The shaft or tube of the conveying component is inserted into the central part of the proximal end of the clamp body 1. When the clamp body 1 is recovered, the upper and lower clamp arms are recovered to the side wall position of the shaft or tube sleeve of the conveying component. The conveying component is provided with a through hole, and a pull wire matching the pull wire hole is passed through the through hole.

[0029] like Figure 2 As shown, in the embodiment, the second wire drawing holes 122 on the adjacent sides of the adjacent lower clamping arms 12 are interconnected and fixed by the same fixing rope, and the fixing rope is deformed or contracted by force to achieve the pulling of the second wire drawing holes 122 on both sides of the reserved slot 121. In the case of deformation by force, the pulling rope can be connected from the middle of the fixing rope to the shaft or sleeve position of the conveying component, and led out of the body from the shaft or sleeve of the conveying component, so that the frame of the reserved slot 121 of the lower clamping arm 12 is more controllable when subjected to the force of outward pulling and deformation.

[0030] like Figure 2 As shown, in the embodiment, the second wire drawing holes 122 on the frame of the reserved slot 121 of the lower clamp arm 12 are each pulled by a wire. An expansion platform 2 is provided on the clamp body 1, and a channel 21 is provided on the side of the expansion platform 2 for the wire to pass through and lead to the through hole of the conveying component to be led out of the body. The arrangement of the wire drawing entrance of the channel 21 needs to make the angle of the force of the outward pulling deformation on the frame of the reserved slot 121 of the lower clamp arm 12 smaller.

[0031] In some possible embodiments, the local deformation section includes folded metal sheets arranged on both sides of the reserved groove of the lower clamp arm and a wire hole for controlling the expansion of the folded metal sheet; the expanded portion of the folded metal sheet forms an overlapping portion with the upper clamp arm. Local deformation can also be achieved by folding the metal sheet, and the wire for manipulating the folded metal sheet is also connected to the remote delivery and recovery control component.

[0032] In some possible embodiments, the local deformation section includes slideways provided on both sides of the reserved groove of the lower clamp arm and slides provided in the slideways, an air bag is provided at the rear end of the slide away from the reserved groove, the inflation control slide of the air bag slides into the range of the reserved groove, and the slide that slides into the range of the reserved groove forms an overlapping part with the upper clamp arm. Local deformation can also be achieved by using a slideway and a slide, where the slide is controlled by the air bag, and the air bag is connected to the remote delivery and recovery control component through an air delivery hose.

[0033] In some possible embodiments, the local deformation section includes slideways provided on both sides of the reserved groove of the lower clamp arm and a slide plate provided in the slideway, a spring is provided at the rear end of the slide plate away from the reserved groove, a positioning pin is provided on the slide plate to fix the slide plate on the slideway, and a wire hole for pulling out the positioning pin is provided on the positioning pin, after the positioning pin is pulled out, the slide plate slides into the reserved groove under the action of the spring, and the slide plate that slides into the range of the reserved groove forms an overlapping part with the upper clamp arm. The form of the slide plate and the spring can also realize local deformation, and the wire hole of the positioning pin is connected to the remote delivery and recovery control component through a wire.

[0034] In some possible embodiments, the local deformation section includes a deformation memory metal disposed on both sides of the reserved groove of the lower clamp arm and a wire drawing hole for controlling the deformation of the deformation memory metal, and the deformation memory metal forms an overlapping portion with the upper clamp arm after deformation. The deformation memory metal can also achieve local deformation under the triggering of the wire drawing hole, and the wire drawing hole is connected to the remote delivery and recovery control component through a wire drawing.

[0035] The working process of the present invention is as follows:

[0036] During the valve repair process, the lower clamp arm 12 is first unfolded and pressed against one side of the ventricle of the valve leaflet, and the upper clamp arm 11 is unfolded on the other side of the atrium of the valve leaflet by relying on shape memory movement, so that the valve leaflet is clamped between the upper and lower clamp arms and is fixed by the angle difference between the upper and lower clamp arms and / or the barbs 114 on the upper clamp arm are pressed in. When the clamp needs to be removed as a whole according to the situation (for example, the upper clamp arm 11 has been unfolded and needs to be folded first), the clamp body 1 with the unfolded lower clamp arm 12 is first inserted into the ventricle as a whole to avoid the leaflets, and then the upper clamp arm 11 avoiding the leaflets is unfolded, and the shape memory movement is used to pass through the reserved groove 121 in the middle of the lower clamp arm 12, so as to form an overlap or a reversal of the upper and lower positions visually from the side; then the inner edge of the reserved groove 121 is transformed to form a limiting structure (for example, the side of the overall frame structure is tensioned to shorten the length of the reserved groove), so that the limiting structure (or the deformed lower clamp arm) partially overlaps with the upper clamp arm surface in projection, and at this time, the upper clamp arm 11 is recovered to press against the limiting structure formed after the deformation of the lower clamp arm 12, thereby driving the lower clamp arm 12 to be recovered as a whole.

[0037] The above is only a preferred embodiment of the present invention, and is not any formal or substantial limitation of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and supplements without departing from the present invention, and these improvements and supplements should also be regarded as the protection scope of the present invention. Any technician familiar with this profession, without departing from the spirit and scope of the present invention, can make some changes, modifications and equivalent changes made by using the technical content disclosed above, which are equivalent embodiments of the present invention; at the same time, any changes, modifications and evolutions of any equivalent changes made to the above embodiments based on the essential technology of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A control structure for a valve regurgitation repair clamp, characterized in that: The repair clamp comprises a clamp body and at least two clamp arm assemblies arranged around the clamp body, wherein the clamp arm assemblies comprise an upper clamp arm and a lower clamp arm; the upper clamp arm and the lower clamp arm are connected to the outer periphery of the clamp body, and the working states of the upper clamp arm and the lower clamp arm are set to a predetermined open and separated state; the lower clamp arm is provided with a reserved groove for the upper clamp arm to pass through the lower clamp arm; the predetermined angle 1 between the upper clamp arm and the clamp body is greater than the predetermined angle 2 between the lower clamp arm and the clamp body, and a clamp control structure is provided on the upper clamp arm, the lower clamp arm and the clamp body; The clamp control structure comprises: a recovery and release control end provided on the upper clamp arm and the lower clamp arm, and a local deformation section provided on the lower clamp arm, after the local deformation section is deformed, the upper clamp arm is provided with an overlapping portion with the deformed local deformation section, and the overlapping portion prevents the upper clamp arm from passing through the reserved slot; The working principle of the clamp control structure is as follows: when the control structure is used, after the upper clamp arm passes through the reserved slot of the lower clamp arm, the local deformation section is deformed, and the upper clamp arm and the deformed local deformation section form an overlapping portion, and the overlapping portion prevents the upper clamp arm from passing through the reserved slot, thereby realizing the overall recovery of the lower clamp arm and the upper clamp arm; The recovery and release control end comprises a first wire pulling hole provided on the upper clamp arm and a second wire pulling hole provided on the lower clamp arm, wherein the first wire pulling hole and the second wire pulling hole are used to connect the traction rope; The local deformation section is set as a section of frame edge on both sides of the reserved groove of the lower clamp arm, the material hardness of the frame edge is less than the material hardness of other parts of the lower clamp arm, the wire pulling hole on the lower clamp arm is set on the frame edge, and the frame edge is deformed under the action of tension; a protrusion is set on the upper clamp arm, and the protrusion forms an overlapping part with the deformed frame edge.

2. A valve regurgitation gathering repair clamp control structure as claimed in claim 1, characterized in that: An expansion platform is sleeved on the clamp body, and a hole for passing a pulling rope is provided on the expansion platform, and the pulling ropes are all gathered through the expansion platform.

3. A valve regurgitation gathering repair clamp control structure as claimed in claim 2, characterized in that: The clamp body is provided with a channel for passing a pulling rope, and the pulling rope connected to the first pulling wire hole passes through the reserved groove, the expansion platform, and the channel of the clamp body in sequence to be connected to the remote delivery and recovery control component.

4. A valve regurgitation gathering repair clamp control structure as claimed in claim 3, characterized in that: The second pulling wire holes are arranged on both sides of the reserved groove of the lower clamping arm, and the traction ropes connected to the second pulling wire holes are connected to the remote transport and recovery control component through the expansion platform and the channel of the clamp body in sequence; the traction ropes connected to the second pulling wire holes on both sides of the reserved groove of the lower clamping arm are converged and passed through the expansion platform, and the traction ropes before and after convergence are set to be Y-shaped.

5. A control structure for a valve regurgitation repair clamp, characterized in that: The repair clamp comprises a clamp body and at least two clamp arm assemblies arranged around the clamp body, wherein the clamp arm assemblies comprise an upper clamp arm and a lower clamp arm; the upper clamp arm and the lower clamp arm are connected to the outer periphery of the clamp body, and the working states of the upper clamp arm and the lower clamp arm are set to a predetermined open and separated state; the lower clamp arm is provided with a reserved groove for the upper clamp arm to pass through the lower clamp arm; the predetermined angle 1 between the upper clamp arm and the clamp body is greater than the predetermined angle 2 between the lower clamp arm and the clamp body, and a clamp control structure is provided on the upper clamp arm, the lower clamp arm and the clamp body; The clamp control structure comprises: a recovery and release control end provided on the upper clamp arm and the lower clamp arm, and a local deformation section provided on the lower clamp arm, after the local deformation section is deformed, the upper clamp arm is provided with an overlapping portion with the deformed local deformation section, and the overlapping portion prevents the upper clamp arm from passing through the reserved slot; The working principle of the clamp control structure is as follows: when the control structure is used, after the upper clamp arm passes through the reserved slot of the lower clamp arm, the local deformation section is deformed, and the upper clamp arm and the deformed local deformation section form an overlapping portion, and the overlapping portion prevents the upper clamp arm from passing through the reserved slot, thereby realizing the overall recovery of the lower clamp arm and the upper clamp arm; The recovery and release control end comprises a first wire pulling hole provided on the upper clamp arm and a second wire pulling hole provided on the lower clamp arm, wherein the first wire pulling hole and the second wire pulling hole are used to connect the traction rope; The local deformation section includes folded metal sheets arranged on both sides of the reserved groove of the lower clamping arm and a wire drawing hole for controlling the unfolding of the folded metal sheets; the unfolded part of the folded metal sheet forms an overlapping part with the upper clamping arm.

6. A control structure for a valve regurgitation repair clamp, characterized in that: The repair clamp comprises a clamp body and at least two clamp arm assemblies arranged around the clamp body, wherein the clamp arm assemblies comprise an upper clamp arm and a lower clamp arm; the upper clamp arm and the lower clamp arm are connected to the outer periphery of the clamp body, and the working states of the upper clamp arm and the lower clamp arm are set to a predetermined open and separated state; the lower clamp arm is provided with a reserved groove for the upper clamp arm to pass through the lower clamp arm; the predetermined angle 1 between the upper clamp arm and the clamp body is greater than the predetermined angle 2 between the lower clamp arm and the clamp body, and a clamp control structure is provided on the upper clamp arm, the lower clamp arm and the clamp body; The clamp control structure comprises: a recovery and release control end provided on the upper clamp arm and the lower clamp arm, and a local deformation section provided on the lower clamp arm, after the local deformation section is deformed, the upper clamp arm is provided with an overlapping portion with the deformed local deformation section, and the overlapping portion prevents the upper clamp arm from passing through the reserved slot; The working principle of the clamp control structure is as follows: when the control structure is used, after the upper clamp arm passes through the reserved slot of the lower clamp arm, the local deformation section is deformed, and the upper clamp arm and the deformed local deformation section form an overlapping portion, and the overlapping portion prevents the upper clamp arm from passing through the reserved slot, thereby realizing the overall recovery of the lower clamp arm and the upper clamp arm; The recovery and release control end comprises a first wire pulling hole provided on the upper clamp arm and a second wire pulling hole provided on the lower clamp arm, wherein the first wire pulling hole and the second wire pulling hole are used to connect the traction rope; The local deformation section includes slideways arranged on both sides of the reserved groove of the lower clamping arm and a slide plate arranged in the slideway. An airbag is provided at the rear end of the slide plate away from the reserved groove. The inflation control slide plate of the airbag slides into the reserved groove range, and the slide plate sliding into the reserved groove range forms an overlapping part with the upper clamping arm.

7. A control structure for a valve regurgitation repair clamp, characterized in that: The repair clamp comprises a clamp body and at least two clamp arm assemblies arranged around the clamp body, wherein the clamp arm assemblies comprise an upper clamp arm and a lower clamp arm; the upper clamp arm and the lower clamp arm are connected to the outer periphery of the clamp body, and the working states of the upper clamp arm and the lower clamp arm are set to a predetermined open and separated state; the lower clamp arm is provided with a reserved groove for the upper clamp arm to pass through the lower clamp arm; the predetermined angle 1 between the upper clamp arm and the clamp body is greater than the predetermined angle 2 between the lower clamp arm and the clamp body, and a clamp control structure is provided on the upper clamp arm, the lower clamp arm and the clamp body; The clamp control structure comprises: a recovery and release control end provided on the upper clamp arm and the lower clamp arm, and a local deformation section provided on the lower clamp arm, after the local deformation section is deformed, the upper clamp arm is provided with an overlapping portion with the deformed local deformation section, and the overlapping portion prevents the upper clamp arm from passing through the reserved slot; The working principle of the clamp control structure is as follows: when the control structure is used, after the upper clamp arm passes through the reserved slot of the lower clamp arm, the local deformation section is deformed, and the upper clamp arm and the deformed local deformation section form an overlapping portion, and the overlapping portion prevents the upper clamp arm from passing through the reserved slot, thereby realizing the overall recovery of the lower clamp arm and the upper clamp arm; The recovery and release control end comprises a first wire pulling hole provided on the upper clamp arm and a second wire pulling hole provided on the lower clamp arm, wherein the first wire pulling hole and the second wire pulling hole are used to connect the traction rope; The local deformation section includes slideways arranged on both sides of the reserved groove of the lower clamping arm and a slide plate arranged in the slideway. A spring is provided at the rear end of the slide plate away from the reserved groove. A positioning pin is provided on the slide plate to fix the slide plate on the slideway. The positioning pin is provided with a wire pulling hole for pulling out the positioning pin. After the positioning pin is pulled out, the slide plate slides into the reserved groove under the action of the spring, and the slide plate sliding into the range of the reserved groove forms an overlapping part with the upper clamping arm.

8. A control structure for a valve regurgitation repair clamp, characterized in that: The repair clamp comprises a clamp body and at least two clamp arm assemblies arranged around the clamp body, wherein the clamp arm assemblies comprise an upper clamp arm and a lower clamp arm; the upper clamp arm and the lower clamp arm are connected to the outer periphery of the clamp body, and the working states of the upper clamp arm and the lower clamp arm are set to a predetermined open and separated state; the lower clamp arm is provided with a reserved groove for the upper clamp arm to pass through the lower clamp arm; the predetermined angle 1 between the upper clamp arm and the clamp body is greater than the predetermined angle 2 between the lower clamp arm and the clamp body, and a clamp control structure is provided on the upper clamp arm, the lower clamp arm and the clamp body; The clamp control structure comprises: a recovery and release control end provided on the upper clamp arm and the lower clamp arm, and a local deformation section provided on the lower clamp arm, after the local deformation section is deformed, the upper clamp arm is provided with an overlapping portion with the deformed local deformation section, and the overlapping portion prevents the upper clamp arm from passing through the reserved slot; The working principle of the clamp control structure is as follows: when the control structure is used, after the upper clamp arm passes through the reserved slot of the lower clamp arm, the local deformation section is deformed, and the upper clamp arm and the deformed local deformation section form an overlapping portion, and the overlapping portion prevents the upper clamp arm from passing through the reserved slot, thereby realizing the overall recovery of the lower clamp arm and the upper clamp arm; The recovery and release control end comprises a first wire pulling hole provided on the upper clamp arm and a second wire pulling hole provided on the lower clamp arm, wherein the first wire pulling hole and the second wire pulling hole are used to connect the traction rope; The local deformation section includes deformation memory metals arranged on both sides of the reserved groove of the lower clamping arm and a wire drawing hole for controlling the deformation of the deformation memory metals. After the deformation, the deformation memory metals form an overlapping part with the upper clamping arm.

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