A repair system with release function

Abstract

The present invention relates to the field of medical devices, and in particular to a repair system with a release function, comprising: a valve clamp, a delivery catheter and a release device, the valve clamp comprising a clamping arm, a linkage rod, a flap pressing member and a telescopic sleeve, the release device comprising a first release module and a second release module, the first release module restricts the flap pressing member so that part or the whole of the flap pressing member is in abutment with the telescopic sleeve, and the second release module is connected to the flap pressing member; when clamping the autologous valve leaflet, the first release module is operated to make the flap pressing member move quickly toward the linkage rod to clamp the autologous valve leaflet, and after judging whether the clamping state of the autologous valve leaflet is ideal, the second release module is operated to adjust the flap pressing member, or the connection between the second release module and the flap pressing member is directly disconnected.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and in particular to a repair system with a releasing function. Background Art

[0002] The mitral valve has a complex anatomy, comprising the leaflets, annulus, chordae tendineae, and papillary muscles, each of which plays a crucial role in maintaining left and right ventricular function. Any condition that compromises the structural integrity and function of these valves, annulus, chordae tendineae, papillary muscles, and the left ventricle can lead to severe mitral regurgitation (MR), potentially causing left ventricular failure, pulmonary hypertension, atrial fibrillation, stroke, and death. Currently, mitral regurgitation (MR) is the most common valvular heart disease in clinical practice, with nearly 10% of people over 75 years old experiencing moderate or severe MR. With the aging population, the incidence of MR is expected to increase significantly. Furthermore, untreated MR can seriously endanger patients' lives and health, with progression to heart failure and death. The one-year mortality rate for severe MR is as high as 57%. Currently, surgery is the gold standard for treating mitral regurgitation. However, 50% of patients with moderate mitral regurgitation are unable to undergo surgery due to age and comorbidities. The one-year and five-year mortality rates of untreated surgical patients are 20% and 50%, respectively. For these patients, clinical practice is increasingly prioritizing the use of minimally invasive interventional therapies.

[0003] Transcatheter mitral valve repair and replacement can theoretically benefit high-risk patients who are unable to undergo surgery. Interventional therapy involves loading an artificial implant onto a delivery system outside the body, delivering it to the mitral valve annulus along a vascular pathway or by puncturing the apex of the heart. The implant is then released and fixed to completely or partially replace the function of the native valve. Currently, mitral valve interventional therapy has become a hot topic in related research, with numerous products under development. However, due to the complexity of the mitral valve itself and its surrounding structures, the development of mitral valve interventional devices faces many unique challenges.

[0004] Patent CN201980019202.1 provides an intravascular heart valve repair system, comprising: a delivery catheter having a distal end configured to be introduced into a heart chamber adjacent to a pair of engaged heart valve leaflets, the delivery catheter comprising a release strip having a pair of invertors; a valve repair leaflet capture device comprising: a hub configured to be removably attached to the release strip of the delivery catheter; a first pair of leaflet capture arms comprising a first inner arm and a first outer arm coupled to the hub; and a second pair of leaflet capture arms comprising a second inner arm and a second outer arm coupled to the hub; and a first set of control tethers positioned on or through the delivery catheter and coupled to the outer arms, and configured to selectively bias the outer arms into a valve leaflet capture position; and a second set of tethers positioned on or through the delivery catheter and coupled to the The inner arm is configured to selectively bias the inner arm into the valve leaflet capture position; wherein the first group of control tethers passes through the laterally spaced positions on the invertor, so that pulling the proximal portion of the first group of control tethers in the proximal direction causes the distal portion of the first group of control tethers to pull the outer segment of the outer arm into the valve leaflet capture position in the distal direction; the technical defect of this invention is that in order to clamp the autologous valve leaflets between the inner arm and the outer arm, it is necessary to operate the control tethers to separate the inner arm and the outer arm, and then operate the control tethers to release the inner arm to clamp the autologous valve leaflets. However, since the control tethers pass through the delivery catheter, the control tethers will be subject to friction, and when the inner arm is released, it is difficult to achieve instantaneous release due to the entanglement of the control tethers. The inner arm can only be released gradually, and the clamping force is small, resulting in poor valve leaflet clamping effect. There is even a problem of failure in clamping due to displacement of the autologous valve leaflets under the impact of blood flow due to a long release time.

[0005] In summary, since the controlled release device in the prior art is difficult to achieve quick release, the clamping effect is limited and there is even a risk of clamping failure. Therefore, a release device with quick release, stable structural design, and taking into account the clamping effect is needed. Summary of the Invention

[0006] The purpose of the present invention is to provide a repair system with a release function, which has the following advantages: fast release speed, stable structure, good clamping effect, and a fault-tolerant mechanism;

[0007] In order to solve the above technical problems, the present invention solves them through the following technical solutions: a repair system with a release function, comprising: a valve clamp, a delivery catheter and a release device, the valve clamp comprising a clamping arm, a linkage rod, a flap pressing member and a telescopic sleeve, the release device comprising a first release module and a second release module, the first release module restricts the flap pressing member so that part or the whole of the flap pressing member is in contact with the telescopic sleeve, and at the same time, the second release module is connected to the flap pressing member.

[0008] The present invention can be further implemented by the following technical solutions:

[0009] In one embodiment, when clamping the autologous leaflets, the first release module is operated to make the flap pressing member move quickly toward the linkage rod to clamp the autologous leaflets, and after determining whether the clamping state of the autologous leaflets is ideal, the second release module is operated to adjust the flap pressing member, or the connection between the second release module and the flap pressing member is directly disconnected.

[0010] In one embodiment, the first releasing module comprises a tubular member, and the tubular member constrains the free end of the petal pressing member at an inner wall thereof.

[0011] In one embodiment, when clamping the native valve leaflets, the tubular member is operated to move toward the proximal end. When the tubular member is separated from the flap pressing member, the flap pressing member immediately moves toward the linkage rod to press the native valve leaflets.

[0012] In one embodiment, when pre-assembled, the second release module is in a relaxed state and is amorphous.

[0013] In one embodiment, the second release module includes a control portion and a release member, wherein the control portion is disposed on the delivery catheter; and a connecting ring is provided on the petal pressing member, and the release member passes through the connecting ring and the control portion.

[0014] In one embodiment, during pre-assembly, the control portion abuts against the free end of the petal pressing member.

[0015] In one embodiment, when operating the second releasing module, both ends of the releasing member are operated by the operator.

[0016] In one embodiment, when pre-installed, the release member is in a relaxed state.

[0017] In one embodiment, when the clamping of the native leaflets is not ideal, the release member is tightened to separate the flap pressing member from the native leaflets, and then the release member is released to allow the flap pressing member to clamp the native leaflets between the flap pressing member and the linkage rod.

[0018] In one embodiment, the delivery catheter includes a control tube, the control tube is cooperatively connected to the telescopic sleeve, and the control part is arranged on the control tube.

[0019] In one embodiment, the tubular member is sleeved outside the control tube; and when the valve clip is in a closed state, the free end of the valve pressing member is located proximal to the proximal end of the clamping arm.

[0020] In one embodiment, the petal pressing member is made of shape memory alloy.

[0021] In one embodiment, the petal pressing member is made of nickel-titanium alloy.

[0022] In another embodiment, the first release module includes a restraining member and an operating member, a restraining ring is provided at the distal end of the restraining member, the restraining ring passes through the connecting ring, the operating member passes through the restraining ring, and the operating member is pulled to move toward the proximal end. When the operating member is disengaged from the restraining ring, the petal pressing member immediately moves toward the linkage rod to press the autologous valve leaflet.

[0023] In one embodiment, the valve clamp also includes a connecting piece and a locking device, the connecting piece includes a limiting channel, and the locking device includes an actuating piece and a locking unit. When the actuating piece is subjected to circumferential force, the actuating piece rotates and moves axially relative to the connecting piece, driving the locking unit to move axially only along the limiting channel toward or away from the end of the clamping arm, thereby locking or unlocking the clamping arm.

[0024] In one embodiment, the locking unit is block-shaped; and the locking unit includes a connecting portion and a locking portion, and the shape of the locking portion matches the shape of the end portion of the clamping arm.

[0025] In one embodiment, the actuating member and the locking unit are movably connected, and the actuating member and the locking unit are connected via the connecting portion, and the locking unit is sleeved outside the actuating member.

[0026] In one embodiment, the clamping arm includes a first action arm and a second action arm, and the distal ends of the first action arm and the second action arm are both provided with a dislocation claw; and the dislocation claw is substantially linear and includes a support surface.

[0027] In one embodiment, the locking portion includes a first locking surface and a second locking surface, wherein the second locking surface is parallel to the center line of the locking unit, and the first locking surface forms a certain angle with the center line of the locking unit.

[0028] In one embodiment, once the first locking surface abuts against the supporting surface, the supporting surface is subjected to an axial supporting force and a lateral supporting force.

[0029] In one embodiment, after the release device releases the flap pressing member and completes the clamping of the autologous valve leaflet, the release device operates the actuating member to move axially, and the actuating member drives the clamping arm to achieve the closure of the clamping arm.

[0030] In one embodiment, after the clamping arm is closed, the locking device is operated, and when the first locking surface abuts against the support surface and the locking unit cannot continue to move toward the distal end, the locking unit completes locking of the clamping arm.

[0031] Compared with the prior art, the advantages of the present invention are:

[0032] 1. Different from the prior art, the release device in the present invention includes a first release module and a second release module. The first release module limits the free end of the flap pressing member and makes it abut against the telescopic sleeve, so that the flap will not be hooked or pulled before capturing the flap. In addition, the greater the swing stroke of the flap pressing member, the greater the clamping force obtained by the flap. The design that the flap pressing member abuts against the telescopic sleeve during pre-installation provides the flap pressing member with a large swing stroke, thereby ensuring the clamping force of the native flap. Secondly, when clamping the native flap, the first release module is operated to move, so that the flap pressing member swings rapidly toward the linkage rod to clamp the native flap at the moment when the first release module is separated from the flap pressing member. The rapid swinging of the flap pressing member provides a large and stable clamping force for clamping the flap, and the clamping effect is good. On the other hand, since the time from the flap pressing member separating from the first release member to clamping the flap is short, the accidental occurrence of the flap leaving the ideal clamping position due to the long release time is reduced, the clamping success rate is increased, and the clinical significance is great.

[0033] 2. Different from the prior art, in order to deal with the problem of unsatisfactory leaflet clamping due to improper operator operation or other reasons, the repair system of the present invention is provided with a fault-tolerant mechanism. When the clamping position of the native leaflet is offset or the native leaflet is not clamped or other emergencies occur, the operator can operate the second release module to adjust the flap pressing member and perform a secondary release to clamp the leaflet. The second release module includes a control part and a release member. Pulling the release member allows the flap pressing member to separate from the native leaflet or the linkage rod. Then, according to the position of the native leaflet, the release member is released to clamp the native leaflet between the flap pressing member and the linkage rod, thereby completing the clamping function of the native leaflet. The second release module ensures the purpose of successfully clamping the native leaflet and improves the success rate of the operation.

[0034] 3. Different from the existing technology, the second release module includes a release piece, which is in a relaxed state when pre-installed. The advantage of this design is that when the operator operates the first release module, since the release piece has no fixed shape, the second release module will not involve or interfere with the movement of the first release module. Moreover, no matter whether the first release module or the second release module is operated, there will be no interference between the two from beginning to end. The two modules are relatively independent and have low coupling. At the same time, they are simple to install, flexible, low cost, and easy to mass produce.

[0035] 4. Different from the existing technology, the first release module includes a tubular component. The advantages of this design are: first, the distal end of the tubular component is closed on all sides. When the free end of the flap-pressing member is restricted to its inner wall, it is not easy to detach easily, and the circumferential inner wall can allow the flap-pressing member to undergo some displacement, and long-term restriction will not cause plastic deformation of the flap-pressing member; second, once the tubular component is detached from the flap-pressing member, the two are completely unrelated, and the tubular component will not interfere with the flap-pressing member swinging toward the linkage rod to restore its original shape, thereby greatly ensuring the timeliness and stability of the clamping leaflet; third, the tubular component has a simple structure and is easy to operate. While ensuring the release function, it will not increase the process difficulty too much, and it has high cost performance and good effect.

[0036] 5. Different from the prior art, when the valve clamp is in a closed state, the free end of the valve pressing member is located proximal to the proximal end of the clamping arm. The advantage of this arrangement is that the valve clamp is placed in the delivery catheter before being released. In order to minimize the diameter of the delivery catheter, the present invention avoids the tubular component from radially overlapping with the clamping arm when the valve clamp is clamped, and the distal diameter of the delivery catheter will not be enlarged due to the design of the tubular component. At the same time, the length of the valve pressing member becomes longer, which is beneficial to increase the clamping area and anchoring area with the native valve leaflet when clamping the native valve leaflet, making it more difficult for the valve leaflet to detach from the valve clamp, improving the stability of the valve clamp, and ensuring the long-term clamping function of the valve clamp, so that patients can obtain a long-term high-quality life, which is of great clinical significance. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figures 1a and 1b Schematic diagram of the valve clip of the present invention in closed and open states and the layout of the release device.

[0038] Figures 2a to 2d This is a schematic diagram of the operation of the first release module and the second release module of the present invention.

[0039] Figures 3a to 3c Schematic diagram of the structure of the locking clamp arm of the valve clip locking device of the present invention

[0040] Figures 4a to 4c It is a structural schematic diagram of the dislocation claw and the locking unit of the present invention.

[0041] The names of the parts indicated by the numbers in the accompanying drawings are as follows: 1-valve clamp, 11-clamping arm, 111-first action arm, 112-second action arm, 113-misalignment claw, 1131-support surface, 12-connecting part, 121-limiting channel, 13-telescopic sleeve, 14-valve pressing part, 141-connecting ring, 15-linkage rod, 2-delivery catheter, 21-control tube, 3-locking device, 31-action part, 32-locking unit, 321-connecting part, 322-locking part, 3221-first locking surface, 3222-second locking surface, 4-release device, 41-first release module, 411-tubular member, 42-second release module, 421-control part, 422-release part. DETAILED DESCRIPTION

[0042] In the following description of the drawings and specific embodiments, details of one or more embodiments of the present application will be described. Other features, purposes and advantages of the present application will be clear from these descriptions, drawings and claims.

[0043] It should be understood that the illustrated and described embodiments are not limited in application to the details of the construction and arrangement of the components set forth in the following description or illustrated in the accompanying drawings. The illustrated embodiments may be other embodiments and can be implemented or executed in various ways. Each example is provided in an explanation of the disclosed embodiments, not in a limiting manner. In fact, it will be apparent to those skilled in the art that various modifications and variations may be made to the embodiments of the present application without departing from the scope or essence of the disclosure of the present application. For example, a feature illustrated or described as part of one embodiment may be used in conjunction with another embodiment to still produce another embodiment. Therefore, the present application discloses such modifications and variations that fall within the scope of the appended claims and their equivalents.

[0044] Likewise, it is understood that the phrases and terms used herein are for descriptive purposes and should not be considered restrictive. The use of "include," "comprising," or "having" and variations thereof herein is intended to encompass the items listed thereafter and their equivalents as well as additional items.

[0045] The present application will be described in more detail below with reference to different embodiments and examples of several aspects of the application.

[0046] In this application, the term "proximal end" or "proximal side" refers to the end or side closer to the surgical operator, and the term "distal end" or "distal side" refers to the end or side farther from the surgical operator.

[0047] Example 1:

[0048] When used to treat mitral valve disease, such as Figure 1a and1b As shown, a repair system with a release function includes: a valve clip 1, a delivery catheter 2 and a release device 4, the valve clip 1 includes a clamping arm 11, a linkage rod 15, a flap pressing member 14 and a telescopic sleeve 13, the release device 4 includes a first release module 41 and a second release module 42, the first release module 41 limits the flap pressing member 14 so that part or the whole of the flap pressing member 14 is in contact with the telescopic sleeve 13, and at the same time, the second release module 42 is connected to the flap pressing member 14.

[0049] The composition and connection method of the various components of the repair system with a locking device 33 of the present invention will be described in detail below with reference to the accompanying drawings;

[0050] In this embodiment, when clamping the autologous leaflets, the first release module 41 is operated to make the flap pressing member 14 move quickly toward the linkage rod 15 to clamp the autologous leaflets, and after judging whether the clamping state of the autologous leaflets is ideal, the second release module 42 is operated to adjust the flap pressing member 14, or directly disconnect the second release module 42 from the flap pressing member 14.

[0051] In this embodiment, the first releasing module 41 includes a tubular component 411 , and the tubular component 411 restricts the free end of the petal pressing member 14 to the inner wall thereof.

[0052] In this embodiment, when clamping the autologous valve leaflets, the tubular member 411 is operated to move toward the proximal end. When the tubular member 411 is separated from the petal pressing member 14, the petal pressing member 14 immediately moves toward the linkage rod 15 to press the autologous valve leaflets. Figure 1b 、 2a and 2b.

[0053] In this embodiment, the second release module 42 includes a control unit 421 and a release member 422. The control unit 421 is provided on the delivery catheter 2. In addition, a connecting ring 141 is provided on the petal pressing member 14. The release member 422 passes through the connecting ring 141 and the control unit 421. Figure 2a shown.

[0054] In this embodiment, during pre-assembly, the control portion 421 is in contact with the free end of the petal pressing member 14. Figure 1b shown.

[0055] In this embodiment, when pre-installed, the release member 422 is in a relaxed state; when the clamping of the native leaflet is not ideal, the release member 422 is tightened to make the petal pressing member 14 separate from the native leaflet, as shown in FIG. Figure 2d As shown, the releasing member 422 is then released to allow the flap pressing member 14 to clamp the native valve leaflet between the flap pressing member 14 and the linkage rod 15 .

[0056] In this embodiment, when the clamping state of the autologous valve leaflet is ideal, the release member 422 is pulled out to release the connecting ring 141. Figure 2c shown.

[0057] In this embodiment, the delivery catheter 2 includes a control tube 21 , the control tube 21 is cooperatively connected with the telescopic sleeve 13 , and the control portion 421 is disposed on the control tube 21 .

[0058] In this embodiment, the tubular member 411 is sleeved outside the control tube 21 ; and when the valve clip 1 is in a closed state, the free end of the valve pressing member 14 is located proximal to the proximal end of the clamping arm 11 .

[0059] In this embodiment, the valve clip 1 further includes a connecting piece 12 and a locking device 3, the connecting piece 12 includes a limiting channel 121, and the locking device 3 includes an action piece 31 and a locking unit 32. When the action piece 31 is subjected to a circumferential force, the action piece 31 rotates and moves axially relative to the connecting piece 12, driving the locking unit 32 to move axially toward or away from the end of the clamping arm 11 only along the limiting channel 121, thereby locking or unlocking the clamping arm 11. Figure 3a and 3b shown.

[0060] In this embodiment, the locking unit 32 is block-shaped; and the locking unit 32 includes a connecting portion 321 and a locking portion 322 . The shape of the locking portion 322 matches the shape of the end portion of the clamping arm 11 .

[0061] In this embodiment, the actuating member 31 and the locking unit 32 are movably connected, and the actuating member 31 and the locking unit 32 are connected via the connecting portion 321 , and the locking unit 32 is sleeved outside the actuating member 31 .

[0062] In this embodiment, the clamping arm 11 includes a first action arm 111 and a second action arm 112. The distal ends of the first action arm 111 and the second action arm 112 are both provided with a dislocation claw 113. Moreover, the dislocation claw 113 is substantially linear and includes a supporting surface 1131. Figure 4a shown.

[0063] In this embodiment, the locking portion 322 includes a first locking surface 3221 and a second locking surface 3222, wherein the second locking surface 3222 is parallel to the center line of the locking unit 32, and the first locking surface 3221 forms a certain angle with the center line of the locking unit 32, such as Figures 4b-4c shown.

[0064] In this embodiment, once the first locking surface 3221 abuts against the supporting surface 1131 , the supporting surface 1131 is subjected to an axial supporting force and a lateral supporting force.

[0065] In this embodiment, after the release device 4 releases the petal pressing member 14 and completes the clamping of the autologous valve leaflet, the action member 31 is operated to move axially, and the action member 31 drives the clamping arm 11 to achieve the closure of the clamping arm 11.

[0066] In this embodiment, after the clamping arm 11 is closed, the locking device 3 is operated. When the first locking surface 3221 abuts against the support surface 1131 and the locking unit 32 cannot continue to move toward the distal end, the locking unit 32 completes the locking of the clamping arm 11.

[0067] The working principle of the present invention is:

[0068] 1. Operate the delivery catheter 2 to deliver the valve clip 1 from the inferior vena cava into the heart, then operate the delivery catheter 2 to allow the valve clip 1 to pass through the atrial septum, and continue to operate the delivery catheter 2 to bend so that the valve clip 1 faces the mitral valve;

[0069] 2. Operate the actuating member 31 to move axially toward the distal end until the first actuating arm 111 and the second actuating arm 112 swing to the maximum opening angle, as shown in FIG. Figure 1b As shown;

[0070] 3. Operate the delivery catheter 2 to allow the valve clip 1 to pass through the mitral valve, and when the native valve leaflet moves to the optimal clamping position, operate the first release module 41 to fix the native valve leaflet between the valve pressing member 14 and the linkage rod 15, as shown in FIG. Figure 2a and 2b As shown, it is determined whether the clamping state of the native valve leaflet is ideal. If the clamping state is not ideal, proceed to step 4. If the clamping state is ideal, proceed directly to step 5.

[0071] 4. Operate the second release module 42 and tighten the release member 422 to separate the valve pressing member 14 from the native valve leaflet. Figure 2d As shown, the release member 422 is then released according to the position of the native leaflet, and the native leaflet is clamped between the leaflet pressing member 14 and the linkage rod 15, thereby completing the clamping purpose of the native leaflet;

[0072] 5. Operate the second release module 42 to pull out the release member 422 so that the release member 422 is separated from the connecting ring 141 and the control unit 421. Figure 2c As shown;

[0073] 6. Operate the actuating member 31 to move axially toward the proximal end until the first actuating arm 111 and the second actuating arm 112 swing to the minimum opening angle, as shown in FIG. Figure 3a As shown;

[0074] 7. Rotate the actuating member 31 to cause the locking device 3 to move axially toward the distal end relative to the connecting member 12. When the locking unit 32 abuts against the support of the dislocation claw 113 and cannot continue to move toward the distal end, the locking unit 32 completes the locking of the clamping arm 11, thereby achieving the purpose of locking the valve clip 1. Figure 3b As shown;

[0075] 8. Operate the control tube 21 to separate from the valve clip 1 and remove it from the body. Figure 3c shown.

[0076] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there may be changes in the specific implementation methods and application scopes. The contents of this specification should not be understood as limiting the present invention.

Claims

1. A repair system with a release function, comprising: A valve clamp, a delivery catheter and a release device, wherein the valve clamp includes a clamping arm, a linkage rod, a flap pressing member and a telescopic sleeve, and is characterized in that: the release device includes a first release module and a second release module, the first release module limits the flap pressing member so that part or the whole of the flap pressing member is in contact with the telescopic sleeve, and at the same time, the second release module is connected to the flap pressing member; the first release module includes a tubular component, which limits the free end of the flap pressing member to its inner wall, and the second release module includes a control part and a release member, the control part is arranged on the delivery catheter, the delivery catheter includes a control tube, and the control part is arranged on the control tube, and the tubular component is sleeved outside the control tube.

2. A repair system with a release function according to claim 1, characterized in that: When clamping the autologous leaflets, the first release module is operated to make the flap pressing member move quickly toward the linkage rod to clamp the autologous leaflets; and after determining whether the clamping state of the autologous leaflets is ideal, the second release module is operated to adjust the flap pressing member, or the connection between the second release module and the flap pressing member is directly disconnected.

3. A repair system with a release function according to claim 2, characterized in that: When clamping the native valve leaflets, the tubular member is operated to move toward the proximal end. When the tubular member is separated from the flap pressing member, the flap pressing member immediately moves toward the linkage rod to press the native valve leaflets.

4. The repair system with release function according to claim 1, characterized in that: When pre-assembled, the second release module is in a relaxed state and is amorphous.

5. The repair system with release function according to claim 2, characterized in that: A connecting ring is provided on the petal pressing member, and the releasing member passes through the connecting ring and the control part.

6. The repair system with release function according to claim 5, characterized in that: During pre-installation, the release member is in a relaxed state; when the clamping of the native leaflet is not ideal, the release member is tightened to allow the pressure flap member to separate from the native leaflet or the linkage rod, and then the release member is released to allow the pressure flap member to clamp the native leaflet between the pressure flap member and the linkage rod.

7. The repair system with release function according to claim 5, characterized in that: The control tube is cooperatively connected with the telescopic sleeve.

8. The repair system with release function according to claim 7, characterized in that: When the valve clip is in a closed state, the free end of the valve pressing member is located proximal to the proximal end of the clamping arm.

9. The repair system with release function according to claim 1, characterized in that: The valve clamp also includes a connecting piece and a locking device, the connecting piece includes a limiting channel, and the locking device includes an actuating piece and a locking unit. When the actuating piece is subjected to circumferential force, the actuating piece rotates and moves axially relative to the connecting piece, driving the locking unit to move axially only along the limiting channel toward or away from the end of the clamping arm, thereby locking or unlocking the clamping arm.

10. The repair system with release function according to claim 9, characterized in that: The locking unit is block-shaped; and the locking unit includes a connecting portion and a locking portion, and the shape of the locking portion matches the shape of the end portion of the clamping arm.

11. The repair system with release function according to claim 10, characterized in that: The actuating member and the locking unit are movably connected, and the actuating member and the locking unit are connected via the connecting portion, and the locking unit is sleeved outside the actuating member.

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