A valve regurgitation repair fixture control structure

Abstract

The present invention relates to a control structure of a valve regurgitation repair clamp, and belongs to the technical field of medical devices. The repair clamp comprises 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 comprises a pulling rope connected to the upper clamp arm and a deformable upper clamp arm; an overlapping part is provided between the deformed upper clamp arm and the reserved groove of the lower clamp arm to prevent the upper clamp arm from passing through the reserved groove. The clamp of the present invention can be used in conjunction with a conveying system, and the release and recovery of the clamp arm can be achieved by in vitro control of a conveying handle. The upper and lower clamp arms can be repeatedly recovered, and the valve can be captured multiple times, with high operability; compared with other similar products, the present device has a clever structure, less implants, and high process feasibility. During the retraction process of the upper and lower clamp arms, the entire clamp arm can be retracted by only controlling the movement of the upper clamp arm through the deformation of the upper clamp arm, thereby reducing the difficulty of control during the recovery process.

Description

Technical Field

[0001] The invention relates to a valve regurgitation 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 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 includes a reserved groove and an outer frame 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 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 upper clamp arm, after the local deformation section is deformed, the outer frame of the lower 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 forming angle of the upper clamp arm is greater than the predetermined forming angle of the lower clamp arm, the upper clamp arm tightly clamps the lower clamp arm due to the elastic force. When recovering, withdraw the valve, and under the predetermined elastic force, the upper clamp arm passes through the reserved groove and moves to the bottom of the lower clamp arm to control the deformation of the local deformation section. The deformed local deformation section has an overlapping part with the outer frame of the lower clamp arm. At this time, recovery only needs to recover the upper clamp arm, and the upper clamp arm cannot pass through the reserved groove and drive the lower clamp arm to complete the recovery 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 clamp body is provided with a channel for passing a pulling rope, and the pulling rope passes through the clamp body channel and is connected to the remote delivery and recovery control component. All pulling ropes converge to the channel on the clamp body and are uniformly connected to the remote delivery and recovery control component.

[0008] Preferably, the local deformation section includes a protruding arm that is deformed by tension and is provided on the edge of the upper clamp arm, and a wire hole is provided on the protruding arm, and the wire hole is used to connect the wire, and the wire is connected to the remote conveying and recovery control component, and a protrusion that matches the protruding arm is provided on the outer frame of the lower clamp arm, and the protruding arm has an overlapping part with the protrusion after being deformed by tension; the number of the protruding arms is two, and they are provided at the far end of the upper clamp arm away from the clamp body; the protrusion is provided at the far end of the lower clamp arm away from the clamp body, facing the inner side of the reserved groove, and the protrusion is located between the two protruding arms. The protruding arm is deformed by the wire control, and the two deformed protruding arms clamp the protrusion, and the upper clamp arm is recovered to drive the lower clamp arm to be recovered together.

[0009] Preferably, the first wire pulling hole is arranged in the middle of the upper clamping arm; and the second wire pulling holes are arranged on both sides of the lower clamping arm.

[0010] In some possible implementations, the local deformation section includes a folded metal sheet provided on the upper 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 outer frame of the upper clamp arm. Local deformation can also be achieved by the folded metal sheet, and the wire for controlling the folded metal sheet is also connected to the remote delivery and recovery control component.

[0011] In some possible implementations, the local deformation section includes a slideway provided on the upper clamp arm and a slide plate provided in the slideway, an air bag for pushing the slide plate is provided in the slideway, the inflation of the air bag controls the slide plate to slide out of the range of the upper clamp arm, and the slide plate that slides out of the range of the upper clamp arm forms an overlapping portion with the outer frame of the lower clamp arm. Local deformation can also be achieved by using a slideway and a slide plate, where the slide plate is controlled by the air bag, and the air bag is connected to the remote delivery and recovery control component through an air hose.

[0012] In some possible implementations, the local deformation section includes a slideway provided on the upper clamp arm and a slide plate provided in the slideway, a compression spring supporting the slide plate is provided in the slideway, a positioning pin for fixing the slide plate on the slideway is provided on the slide plate, 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 out of the range of the upper clamp arm under the action of the compression spring, and the slide plate that slides out of the range of the upper clamp arm forms an overlapping portion with the outer frame of the lower 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.

[0013] In some possible implementations, the local deformation section includes a deformation memory metal provided on both sides of the upper 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 outer frame of the lower 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.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The clamp of the present invention can be used together with the delivery system, and the corresponding clamp arm can be released and recovered by controlling the delivery handle in vitro. The system can realize the repeated recovery of the upper and lower clamp arms, capture the valve multiple times, and has high operability; compared with other similar products, the device has a clever structure, less implants, and high process feasibility. During the retraction process of the upper and lower clamp arms, the entire clamp arm can be retracted by simply controlling the movement of the upper clamp arm through the deformation of the upper clamp arm, which reduces the difficulty of control during the recovery process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic top view of an upper clamping arm and a lower clamping arm in an embodiment of the present invention;

[0017] Figure 2 It is a side view of the upper clamp arm and the lower clamp arm of the control structure embodiment of the valve regurgitation repair clamp of the present invention when both are fully deployed;

[0018] Figure 3 It is an overall schematic diagram of a clamp embodiment of the present invention;

[0019] Figure numerals: 1. clamp body; 11. upper clamp arm; 12. lower clamp arm; 111. first wire pulling hole; 112. second wire pulling hole; 113. protruding arm; 114. barb; 121. reserved groove; 122. protrusion. 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 1-3As shown, the present invention provides a control structure of a valve regurgitation repair clamp. The repair clamp is delivered to the valve through a delivery system. 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 distal ends of the upper clamp arm 11 and the lower clamp arm 12 away from the operator are connected to the periphery of the clamp body 1, and the proximal ends of the upper clamp arm 11 and the lower clamp arm 12 close to the operator are set to be 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; An opening angle 1 is provided between the clamp arm 11 and the clamp body 1, and an opening angle 2 is provided between the lower clamp arm 12 and the clamp body 1, wherein the angle of the opening angle 1 is greater than the angle of the opening 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 comprises a pulling rope connected to the upper clamp arm 11 and a deformable upper clamp arm 11; an overlapping portion is provided between the deformed upper clamp arm 11 and the reserved groove 121 of the lower clamp arm 12 to prevent the upper clamp arm 11 from passing through the reserved groove 121. A channel for passing the pulling rope is provided on the clamp body 1, and the pulling rope is connected to the conveying system through the clamp body 1. A deformable convex arm 113 is provided at one end of the upper clamp arm 11 separated from the clamp body 1. Two convex arms 113 are provided. A protrusion 122 is provided in the reserved groove 121 at one end of the lower clamp arm 12 separated from the clamp body 1. The protrusion 122 is provided between the two convex arms 113. A first wire-pulling hole 111 is provided in the middle of the upper clamp arm 11, and the pulling rope is connected to the conveying system through the first wire-pulling hole 111 and the clamp body 1 in sequence. A second wire-pulling hole 112 is provided on the protruding arm 113, and the pulling rope is connected to the conveying system through the second wire-pulling hole 112 and the clamp body 1 in sequence. A pulling rope is provided between the second wire-pulling holes 112 on the two protruding arms 113 of the upper clamp arm 11. A pulling rope 1 is provided between the second wire-pulling holes 112 on the two protruding arms 113 of the upper clamp arm 11, and the middle of the pulling rope 1 is connected to the pulling rope 2, and the pulling rope 2 is connected to the conveying system through the clamp body 1.

[0022] Example

[0023] like Figure 1 , 2 3 shows a valve regurgitation repair clamp, wherein 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 two sets of wire drawing holes, wherein the first wire drawing hole 111 is located in the middle of the upper clamp arm 11; the second wire drawing hole 112 is located at the distal protruding arm 113 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 with square, circular or elliptical hollows while ensuring the strength, and the hollows can be distributed in a grid. When the upper clamp arm 11 moves, it passes through the reserved slot 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] Two independent protruding arms 113 are provided at the far end of the upper clamp arm 11, and each protruding arm 113 has a second wire drawing hole 112, and the second wire drawing hole 112 of each protruding arm is stretched and pulled by a wire; a protruding block is provided in the middle of the upper clamp arm 11, and a through first wire drawing hole 111 is provided on the protruding block, which is used to release and recycle the upper clamp arm 11; in order to reduce the stress when the clamp arm is released and recycle, 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 it is unfolded and the central axis of the clamp body 1 is between 60° and 90°.

[0026] The lower clamp arm 12 can pass through or accommodate the upper clamp arm 11 in the reserved groove 121, and has a reserved crossbeam at its distal end, with a protrusion 122 at the center of the crossbeam. The position of the protrusion 122 corresponds to the position of the distal protrusion 113 of the upper clamp arm 11 after being gathered by the pull rope. When the two distal protrusions 113 on the upper clamp arm 11 shrink under the pull of the pull rope, the two distal protrusions 113 are close together and will overlap with the protrusion 122 on the crossbeam of the lower clamp arm 12. When recovering, the protrusion 122 is stressed, and the upper clamp arm 11 drives the lower clamp arm 12 to recover to the side wall of the clamp body 1. The angle between the surface of the 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 pre-molding angles. The pre-molding angle of the upper clamp arm 11 is greater than the pre-molding angle of the lower clamp arm 12. The pre-molding 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 can be recovered to the side wall position of the shaft or tube sleeve of the conveying component. A boss is provided near the installation position of the clamp body 1 of the conveying component. The boss is conical or cylindrical in shape. There are multiple through holes on the boss. The through holes are provided with pull wires that match the pull wire holes.

[0029] In some possible embodiments, the local deformation section includes a folded metal sheet provided on the upper 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 outer frame of 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.

[0030] In some possible embodiments, the local deformation section includes a slideway provided on the upper clamp arm and a slide plate provided in the slideway, an air bag for pushing the slide plate is provided in the slideway, the inflation of the air bag controls the slide plate to slide out of the range of the upper clamp arm, and the slide plate that slides out of the range of the upper clamp arm forms an overlapping portion with the outer frame of the lower clamp arm. Local deformation can also be achieved by using a slideway and a slide plate, where the slide plate is controlled by the air bag, and the air bag is connected to the remote transport recovery control component through an air hose.

[0031] In some possible embodiments, the local deformation section includes a slideway provided on the upper clamp arm and a slide plate provided in the slideway, a compression spring supporting the slide plate is provided in the slideway, a positioning pin for fixing the slide plate on the slideway is provided on the slide plate, 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 out of the range of the upper clamp arm under the action of the compression spring, and the slide plate that slides out of the range of the upper clamp arm forms an overlapping portion with the outer frame of the lower 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.

[0032] In some possible embodiments, the local deformation section includes a deformation memory metal provided on both sides of the upper 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 outer frame of the lower 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.

[0033] The working process of the present invention is as follows:

[0034] 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 and unfolds by 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 retracted 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 that has avoided the leaflets is passed to or through the reserved groove 121 in the middle of the lower clamp arm 12 by shape memory movement, so as to form an overlap or a reversed upper and lower position from the side vision; then a limiting structure is formed (penetrating or distorted in shape) at the edge of the upper clamp arm 11 (such as a structure in which the protruding arm 113 is gathered by a pull rope), so that the limiting structure overlaps with the protrusion 122 (or concave shape, etc.) on the inner edge of the reserved groove 121 of the lower clamp arm in projection. At this time, retracting the upper clamp arm 11 will cause the limiting structure to press against the protrusion 122 (or concave shape, etc.) of the lower clamp arm 12, thereby driving the lower clamp arm 12 to be retracted as a whole.

[0035] 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 valve regurgitation repair fixture control structure, characterized in that: The repair clamp comprises a clamp body, at least two clamp arm assemblies arranged around the clamp body, the clamp arm assemblies comprising 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 separation state; the lower clamp arm comprises a reserved groove and an outer frame 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 upper clamp arm, after the local deformation section is deformed, the outer frame of the lower 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 deformed local deformation section forms an overlapping portion with the outer frame of the lower clamp arm, 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 a protruding arm that is deformed by tension and is provided on the edge of the upper clamping arm. A wire hole is provided on the protruding arm, and the wire hole is used to connect a wire. The wire is connected to a remote transport and recovery control component. A protrusion that matches the protruding arm is provided on the outer frame of the lower clamping arm. After the protruding arm is deformed by tension, an overlapping part is provided with the protrusion.

2. A valve regurgitation repair fixture control structure as claimed in claim 1, characterized in that: The clamp body is provided with a channel for passing a pulling rope, and the pulling rope passes through the clamp body channel and is connected with a remote delivery and recovery control component.

3. A valve regurgitation repair fixture control structure as claimed in claim 1, characterized in that: There are two protruding arms, which are arranged at the far end of the upper clamp arm away from the clamp body; the protrusion is arranged at the far end of the lower clamp arm away from the clamp body, facing the inner side of the reserved groove, and the protrusion is located between the two protruding arms.

4. A valve regurgitation repair fixture control structure as claimed in claim 1, characterized in that: The first wire pulling hole is arranged at the middle part of the upper clamping arm; and the second wire pulling holes are arranged at both sides of the lower clamping arm.

5. A valve regurgitation repair fixture control structure, characterized in that: The repair clamp comprises a clamp body, at least two clamp arm assemblies arranged around the clamp body, the clamp arm assemblies comprising 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 separation state; the lower clamp arm comprises a reserved groove and an outer frame 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 upper clamp arm, after the local deformation section is deformed, the outer frame of the lower 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 deformed local deformation section forms an overlapping portion with the outer frame of the lower clamp arm, 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 a folded metal sheet arranged on the upper clamping arm and a wire drawing hole for controlling the unfolding of the folded metal sheet; the unfolded portion of the folded metal sheet forms an overlapping portion with the outer frame of the lower clamping arm.

6. A valve regurgitation repair fixture control structure, characterized in that: The repair clamp comprises a clamp body, at least two clamp arm assemblies arranged around the clamp body, the clamp arm assemblies comprising 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 separation state; the lower clamp arm comprises a reserved groove and an outer frame 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 upper clamp arm, after the local deformation section is deformed, the outer frame of the lower 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 deformed local deformation section forms an overlapping portion with the outer frame of the lower clamp arm, 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 a slideway arranged on the upper clamping arm and a slide plate arranged in the slideway. An airbag is arranged in the slideway to push the slide plate. The inflation of the airbag controls the slide plate to slide out of the range of the upper clamping arm. The slide plate that slides out of the range of the upper clamping arm forms an overlapping part with the outer frame of the lower clamping arm.

7. A valve regurgitation repair fixture control structure, characterized in that: The repair clamp comprises a clamp body, at least two clamp arm assemblies arranged around the clamp body, the clamp arm assemblies comprising 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 separation state; the lower clamp arm comprises a reserved groove and an outer frame 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 upper clamp arm, after the local deformation section is deformed, the outer frame of the lower 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 deformed local deformation section forms an overlapping portion with the outer frame of the lower clamp arm, 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 a slideway arranged on the upper clamping arm and a slide plate arranged in the slideway, a compression spring for supporting the slide plate is arranged in the slideway, a positioning pin for fixing the slide plate on the slideway is arranged on the slide plate, and a wire pulling hole for pulling out the positioning pin is arranged on the positioning pin. After the positioning pin is pulled out, the slide plate slides out of the range of the upper clamping arm under the action of the compression spring, and the slide plate that slides out of the range of the upper clamping arm forms an overlapping part with the outer frame of the lower clamping arm.

8. A valve regurgitation repair fixture control structure, characterized in that: The repair clamp comprises a clamp body, at least two clamp arm assemblies arranged around the clamp body, the clamp arm assemblies comprising 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 separation state; the lower clamp arm comprises a reserved groove and an outer frame 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 upper clamp arm, after the local deformation section is deformed, the outer frame of the lower 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 deformed local deformation section forms an overlapping portion with the outer frame of the lower clamp arm, 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 upper clamping arm and wire drawing holes for controlling the deformation of the deformation memory metals. After deformation, the deformation memory metals form an overlapping portion with the outer frame of the lower clamping arm.

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