Valve repair system with clutch assembly

Abstract

The invention provides a valve repair system with a clutch component, which comprises a tissue fixing mechanism and a conveying control mechanism, a transmission shaft of the conveying control mechanism is arranged in a conveying pipe component, and the clutch component is detachably connected with the tissue fixing mechanism; the clutch assembly comprises a connecting shaft, a connecting seat and a clutch piece, the connecting shaft is arranged in the connecting seat and the clutch piece in a penetrating mode, one end of the connecting shaft is connected with the transmission shaft, and the other end of the connecting shaft is axially and detachably connected with the center shaft; the connecting seat is used for connecting the conveying control mechanism and the clutch piece; when the conveying control mechanism drives the transmission shaft and the connecting shaft to move towards the near end, the clutch piece is separated from the connecting end of the base, so that the connecting shaft is separated from the center shaft. The connection and separation stability of the clutch assembly and the tissue fixing mechanism is high, the tissue fixing mechanism can be withdrawn and loaded for multiple times, repeated use of the conveying control mechanism is achieved, and the operation cost is reduced.

Description

Technical Field

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

[0002] The mitral valve is an important valve in the human heart, located between the left atrium and the left ventricle. However, with age and the influence of certain disease factors, the mitral valve may be damaged or diseased, leading to mitral regurgitation, which seriously affects heart function and health.

[0003] Transcatheter valve repair has the advantages of no need for thoracotomy, less trauma, shorter operation time, no need for extracorporeal circulation support, and high surgical safety. In recent years, various minimally invasive treatments based on surgical mitral valve repair procedures have been used in clinical practice.

[0004] Depending on the location and width of the patient's valve lesions, the surgeon often needs to use multiple valve clips during the operation. The valve repair systems in the prior art are all single-set delivery systems with a single valve clip. When a second valve clip is needed, the delivery system deforms when the distal end of the delivery system is separated from the valve clip, and a new valve clip cannot be reinstalled. Therefore, after the valve clip is released, the delivery system that matches it will be discarded. The delivery system is relatively expensive, and it is obviously a waste to scrap and discard the entire delivery system. Therefore, it is of great significance to develop a valve clip delivery system that can be used with multiple valve clips. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a valve repair system, which is detachably connected to a tissue fixation mechanism through a clutch component. The connection between the clutch component and the tissue fixation mechanism is highly stable and can undergo reversible deformation. The system is reusable and can withdraw and load the tissue fixation mechanism multiple times, thereby reducing surgical costs.

[0006] Specifically, the following solutions are included:

[0007] A valve repair system with a clutch assembly, comprising:

[0008] The tissue fixation mechanism comprises a fixation assembly, wherein the fixation assembly comprises a fixation seat and a central axis disposed in the fixation seat, and the fixation seat comprises a base connection end;

[0009] A delivery control mechanism, comprising a delivery tube assembly, a transmission shaft and a clutch assembly, wherein the transmission shaft is located in the delivery tube assembly, and the clutch assembly is detachably connected to the tissue fixing mechanism;

[0010] The clutch assembly includes a connecting shaft, a connecting seat, and a clutch member. The connecting shaft passes through the connecting seat and the clutch member. One end of the connecting shaft is connected to the transmission shaft, and the other end of the connecting shaft is axially separable from the central shaft. The connecting seat is used to connect the conveying control mechanism and the clutch member. When the conveying control mechanism drives the transmission shaft and the connecting shaft to move proximally, the clutch member is separated from the connecting end of the base, so that the connecting shaft is separated from the central shaft.

[0011] Further, the clutch member includes a fixed end connected to the connecting seat and a clutch end detachably connected to the connecting end of the base.

[0012] Further, the clutch end includes a first half clip and a second half clip connected to each other, and the first half clip and the second half clip can open or close relative to each other.

[0013] Further, clamping portions are provided on both the first half clip and the second half clip, and a clamping cooperation portion corresponding to the clamping portion is provided on the connecting end of the base.

[0014] The clamping portion is connected to the clamping cooperation portion in cooperation to axially and circumferentially limit the fixed seat.

[0015] Further, a connecting hole is provided on the fixed end, and an open gap is provided on one side of the connecting hole facing the clutch end, so that the first half clip and the second half clip can be opened along the open gap.

[0016] Further, the clutch member is made of an elastic material.

[0017] Further, the connecting shaft includes a boss section and a shaft body, and the cross-sectional diameter of the boss section is larger than the cross-sectional diameter of the shaft body.

[0018] Further, when the clutch member opens, the minimum inner diameter of the fixed end is smaller than the cross-sectional diameter of the boss section.

[0019] When the clutch member is completely closed, the inner diameter of the fixed end is equal to the cross-sectional diameter of the boss section, and the inner wall of the fixed end is in clearance fit with the outer wall of the boss section.

[0020] Further, a first hinged structure is provided on the first half clip, and a second hinged structure is provided on the second half clip. The first hinged structure is connected to the second hinged structure in cooperation, so that the first half clip and the second half clip can open or close relative to each other.

[0021] Further, the connecting seat includes a conveying connection end and a clutch connection end. The conveying connection end is used to connect with the conveying pipe assembly. The clutch connection end includes a connecting portion that axially protrudes towards the distal end. The clutch connection end is connected to the clutch member through the connecting portion.

[0022] Further, the boss section is arranged to be sleeved on the shaft body in a split manner.

[0023] Further, the connecting shaft has a channel that penetrates and communicates the transmission shaft and the central shaft.

[0024] Further, a guiding member is included. The guiding member is inserted into the inner cavity of the transmission shaft, the channel, and the inner cavity of the central shaft.

[0025] As described above, the present invention has the following beneficial effects:

[0026] When the clutch member of the present application is separated from the connection end of the base, only the connecting shaft needs to be axially pulled towards the proximal end. During the process of the separation of the connecting shaft and the central shaft, the clutch end of the clutch member sleeved on its outer side opens to be separated from the connection end of the base. During the separation process, the connection end of the base remains stationary, with high separation stability, simple and fast steps. The clutch member can undergo reversible deformation, and the tissue fixation mechanism can be loaded multiple times, realizing the reuse of the conveying control mechanism and reducing the surgical cost.

[0027] The connecting shaft and the central shaft of the clutch assembly of the present application are axially separable. The connecting shaft is inserted into the clutch member. When the clutch member is completely closed, the boss section of the connecting shaft has a clearance fit with the inner cavity of the clutch member, ensuring the connection stability between the conveying control mechanism and the tissue fixation mechanism when separation is not required. By rotating the connecting shaft, a driving force can be provided for the tissue fixation mechanism, and axially pulling the connecting shaft can also control the separation between the clutch assembly and the tissue fixation mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the present invention, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0029] Attached Figure 1 is a schematic structural diagram of the valve repair system according to the embodiment of the present application;

[0030] Attached Figure 2 is a schematic structural diagram of the separation of the tissue fixation mechanism and the conveying control mechanism according to the embodiment of the present application (the guiding member is not shown);

[0031] Attached Figure 3Cross-sectional view of the valve repair system according to the embodiment of the present application;

[0032] Appendix Figure 4 Schematic structural diagram of the clutch member provided by the embodiment of the present application;

[0033] Appendix Figure 5 Schematic structural diagram of the clutch member in another implementation manner of the embodiment of the present application;

[0034] Appendix Figure 6 Schematic structural diagram of the connection seat provided by the embodiment of the present application;

[0035] Appendix Figure 7 Schematic structural diagram of the cooperation between the clutch member and the connecting shaft according to the embodiment of the present application;

[0036] Appendix Figure 8 Schematic structural diagram of the cooperation between the clutch member and the connecting shaft in another implementation manner of the embodiment of the present application;

[0037] Appendix Figure 9 Schematic structural diagram of the connecting shaft provided by the embodiment of the present application;

[0038] Appendix Figure 10 Cross-sectional view of the connecting shaft in another implementation manner of the embodiment of the present application.

[0039] Appendix Figure 11 Schematic diagram of the separation process between the clutch assembly and the fixed assembly according to the embodiment of the present application;

[0040] Appendix Figure 12 Schematic structural diagram of the fixed seat provided by the embodiment of the present application;

[0041] Appendix Figure 13 Schematic structural diagram of the central shaft provided by the embodiment of the present application.

[0042] Among them, the corresponding reference numerals are as follows: clamping assembly 1, closing member 11, capturing member 12, moving seat 13, fixing assembly 2, fixing seat 21, central shaft 22, driving end 221, shaft connection end 222, central cavity 223, second clamping structure 224, base connection end 211, clamping mating portion 212, driving cavity 213, conveying pipe assembly 3, transmission shaft 4, clutch assembly 5, connecting shaft 51, boss section 511, channel 512, shaft body 513, transition section 514, limiting shoulder 515, limiting sleeve 516, first clamping structure 5131, connecting seat 52, conveying connection end 521, clutch connection end 522, connecting portion 523, fixing hole 524, connecting cavity 5211, communicating cavity 5221, limiting ring 525, limiting groove 526, clutch member 53, fixed end 531, connecting hole 5311, open gap 5312, clutch end 532, first half clamp 5321, second half clamp 5322, clamping portion 5323, operating wire 6, guiding member 7. Detailed implementation manners

[0043] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts belong to the scope of protection of the present invention.

[0044] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "top", "bottom", "side", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. The terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0045] In addition, in the present invention, unless otherwise clearly defined and limited, the terms "installation", "connection", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0046] It should be noted that in this embodiment, the "proximal end" described refers to the direction close to the operator; the "distal end" refers to the direction away from the operator.

[0047] Embodiment

[0048] See Figures 1-13 , this embodiment provides a valve repair system with a clutch assembly, specifically including a tissue fixation mechanism and a delivery control mechanism. The tissue fixation mechanism is detachably connected to the distal end of the delivery control mechanism and is delivered to a specified position through the delivery control mechanism. It should be noted that the tissue in this embodiment can be cardiac valve leaf tissue.

[0049] In this application, the delivery control mechanism is relatively separated from the tissue fixation mechanism through the clutch assembly. The connection stability between the clutch assembly and the tissue fixation mechanism is high, and it can undergo reversible deformation, so as to facilitate loading the tissue fixation mechanism multiple times during the operation, realizing the reuse of the delivery control mechanism and reducing the surgical cost. After the tissue fixation mechanism closes and releases the tissue during the operation, and when the guiding member is not withdrawn, the tissue fixation mechanism can also be retracted and released again through the delivery control mechanism.

[0050] Specifically, the tissue fixation mechanism includes a clamping assembly 1 for closing the valve tissue and a fixing assembly 2 for mounting the clamping assembly 1. The delivery control mechanism is used to deliver the tissue fixation mechanism to a specified position and control the clamping assembly 1 to complete the clamping action. The distal end of the delivery control mechanism is detachably connected to the fixing assembly 2.

[0051] Specifically, the clamping assembly 1 includes a pair of closing members 11, a pair of capturing members 12 arranged corresponding to the closing members 11, and a moving seat 13 for mounting the closing members 11 and the capturing members 12. The moving seat 13 is in threaded transmission connection with the central shaft 22. By rotating the central shaft 22 to drive the moving seat 13 to move up and down, the opening and closing of the closing members 11 are realized. By controlling the operating wire 6 in the delivery control mechanism, the opening and closing of the capturing members 12 are realized. When clamping the tissue, the closing members 11 and the capturing members 12 cooperate to achieve clamping.

[0052] Specifically, the fixing assembly 2 includes a fixing seat 21 and a central shaft 22. The fixing seat 21 is provided with a transmission cavity 213 for accommodating the central shaft 22. One end of the fixing seat 21 includes a base connection end 211 for detachably connecting with the clutch assembly 5. The base connection end 211 is provided with a clamping cooperation part 212 for connecting with the clutch assembly 5. The other end of the fixing seat 21 is used for cooperatively connecting with a pair of closing members 11 of the clamping assembly 1.

[0053] Specifically, the central shaft 22 includes a transmission end 221 and a shaft connection end 222. The transmission end 221 is in threaded transmission connection with the moving seat 13, and the shaft connection end 222 is detachably connected to the connecting shaft 51. The transmission end 221 is provided with an external thread, and the external thread on the transmission end 221 cooperates with the internal thread of the moving seat 13, so that when the central shaft 22 rotates, the moving seat 13 moves up and down along the central shaft 22. In this embodiment, after the external thread on the transmission end 221 cooperates with the internal thread of the moving seat 13, because the helix angle of the spiral ring groove is smaller than the friction angle between the two spiral groove contact surfaces, the screw drive has self-locking property and can only convert rotation into axial movement. When the central shaft 22 stops rotating, if only an axial force is applied to the central shaft 22 or the moving seat 13, it will not displace either. Therefore, the moving seat 13 can stay at any position through threaded cooperation. A central cavity 223 for passing through the guide member 7 is provided in the central shaft 22.

[0054] Specifically, the conveying control mechanism includes a conveying pipe assembly 3 and a transmission shaft 4. The transmission shaft 4 is arranged inside the conveying pipe assembly 3. The transmission shaft 4 is used to rotate to provide driving force for the tissue fixing mechanism and control the separation of the clutch assembly 5 from the tissue fixing mechanism. In this embodiment, the transmission shaft 4 is a rod-shaped body with an inner cavity or a hollow tubular body. The transmission shaft 4 is connected to the connecting shaft 51 of the clutch assembly 5. When the transmission shaft 4 rotates, it drives the connecting shaft 51 to rotate. Axially pulling the connecting shaft 51 can separate the connecting shaft 51 from the central shaft 22.

[0055] The conveying control mechanism further includes a clutch assembly 5. The clutch assembly 5 is located between the conveying pipe assembly 3 and the tissue fixing mechanism, and the clutch assembly 5 is detachably connected to the tissue fixing mechanism. The clutch assembly 5 is used to relatively separate the conveying control mechanism from the tissue fixing mechanism. The clutch assembly 5 includes a connecting shaft 51, a connecting seat 52 and a clutch member 53. The connecting shaft 51 passes through the connecting seat 52 and the clutch member 53. One end of the connecting shaft 51 is connected to the transmission shaft 4, and the other end of the connecting shaft 51 is axially detachably connected to the central shaft 22; the connecting seat 52 is used to connect the conveying pipe assembly 3 and the clutch member 53. When the conveying control mechanism drives the transmission shaft 4 and the connecting shaft 51 to move proximally, the clutch end 532 opens and separates from the base connection end 211, so that the connecting shaft 51 separates from the central shaft 22. In this embodiment, when the clutch member 53 separates from the base connection end 211, only by axially pulling the connecting shaft 51 proximally, the clutch end 532 of the clutch member 53 sleeved on the outside thereof opens and separates from the base connection end 211, and the connecting shaft 51 separates from the central shaft 22. During the separation process, the base connection end remains stationary, the separation process has high stability, the separation step is simple and fast, the clutch member can undergo reversible deformation, which is convenient for reloading the tissue fixing mechanism again and realizing the reuse of the conveying control mechanism.

[0056] Specifically, the connection seat 52 is used to connect the conveying pipe assembly 3 and the clutch member 53. The connection seat 52 includes a conveying connection end 521 and a clutch connection end 522. The conveying connection end 521 is used to connect with the distal end of the conveying pipe assembly 3. The clutch connection end 522 includes a connecting portion 523 that axially protrudes towards the distal end. The clutch connection end 522 is connected to the fixed end 531 of the clutch member 53 through the connecting portion 523. The conveying connection end 521 is provided with a connection cavity 5211 that fits and sleevs the distal end of the conveying pipe assembly 3, so that the connection seat 52 is connected to the distal end of the conveying pipe assembly 3. The clutch connection end 522 is provided with a communication cavity 5221 that has a clearance fit with the connecting shaft 51. The inner diameter of the connection cavity 5211 is larger than the inner diameter of the communication cavity 5221. In some embodiments, the connecting portion 523 can be two connecting ears symmetrically arranged on the clutch connection end 522. The connecting portion 523 is provided with a fixing hole 524, and the connecting portion 523 is connected to the fixed end 531 of the clutch member 53 through the fixing hole 524. In some embodiments, a connecting sleeve is further provided inside the connection seat 52. The connecting sleeve is sleeved between the connection cavity 5211 and the communication cavity 5221. The proximal end of the connecting sleeve abuts against the distal end of the conveying pipe assembly 3, and the inner wall of the connecting sleeve has a clearance fit with the connecting shaft 51.

[0057] Further, the connection seat 52 includes a limiting ring 525. The limiting ring 525 is provided with a limiting groove 526. The limiting groove 526 is used to accommodate the control wire 6 and limit the control wire 6. In this embodiment, at least a pair of limiting grooves 526 are symmetrically provided on the limiting ring 525. The at least a pair of limiting grooves 526 are used to respectively accommodate the two control wires 6 for controlling a pair of capture members 12.

[0058] Specifically, the clutch member 53 includes a fixed end 531 connected to the connection seat 52 and a clutch end 532 that can be detachably connected to the base connection end 211. The fixed end 531 of this embodiment is provided with a connection hole 5311. The connection hole 5311 can be correspondingly connected to the fixing hole 524, so that the clutch member 53 is connected to the connection seat 52. In some embodiments, one side of the connection hole 5311 facing the clutch end 532 can be open to facilitate the clutch end 532 to open along the open gap. Specifically, when the clutch member 53 is completely closed, the inner wall of the clutch end 532 has a clearance fit with the outer wall of the base connection end 211, and the inner wall of the fixed end 531 has a clearance fit with the connecting shaft 51. Both ends of the clutch member 53 are respectively connected to the connection seat 52 and the fixed seat 21.

[0059] In some embodiments, the clutch end 532 includes a first half clip 5321 and a second half clip 5322 that are connected to each other. The first half clip 5321 and the second half clip 5322 are configured to be able to open or close relative to each other. In some embodiments, when the first half clip 5321 and the second half clip 5322 are closed, they form an annular shape. An open gap 5312 is provided on one side of the connection hole 5311 facing the clutch end 532, so that the first half clip 5321 and the second half clip 5322 can be opened along the open gap 5312. Clamping portions 5323 are provided on both the first half clip 5321 and the second half clip 5322, and clamping cooperation portions 212 corresponding to the clamping portions 5323 are provided on the base connection end 211; the clamping portions 5323 are connected in cooperation with the clamping cooperation portions 212 to axially and circumferentially limit the fixed seat 21. When the conveying control mechanism moves proximally, the clamping portion 5323 is disengaged from the clamping cooperation portion 212, so that the clutch member 53 is relatively separated from the base connection end 211.

[0060] In some embodiments, the clutch member 53 can be made of an elastic material. The fixed end 531 and the clutch end 532 are integrally formed, and the first half clip 5321 and the second half clip 5322 are elastically connected at the fixed end ， It can open or close relative to each other and will not undergo irreversible deformation, so that the clutch member 53 can be reused, realizing the reuse of the conveying control mechanism. It should be noted that the natural state of the clutch end 532 of the clutch member 53 without external force is an open state. At this time, the inner hole of the fixed end 531 is approximately elliptical; when the fixed end 531 is squeezed into a circular shape by the boss section 511 of the connecting shaft 51, the clutch end 532 of the fixed end 531 closes, and the opening is limited. Specifically, in practical applications, after the previous set of tissue fixation mechanisms is released, the conveying control mechanism is withdrawn. After aligning a new tissue fixation mechanism on the clutch member 53, the transmission shaft 4 is pushed distally, and the boss section 511 of the connecting shaft 51 squeezes the port of the fixed end 531, so that the clutch end 532 closes and is connected to the fixed seat 21 to fix the new tissue fixation mechanism.

[0061] In some other embodiments, a first hinge structure is provided on the first half clip 5321, and a second hinge structure is provided on the second half clip 5322. The first hinge structure is connected in cooperation with the second hinge structure, so that the first half clip 5321 and the second half clip 5322 can open or close relative to each other. Exemplarily, the first hinge structure and the second hinge structure can be an annular structure and a circular structure that are hinged to each other, so that the first half clip 5321 and the second half clip 5322 will not be deformed during the process of opening or closing relative to each other, and the clutch member 53 can be reused, realizing the reuse of the conveying control mechanism.

[0062] Specifically, the connecting shaft 51 includes a boss section 511 and a shaft body 513. The cross-sectional diameter of the boss section 511 is greater than that of the shaft body 513. The outer wall of the boss section 511 is in clearance fit with the inner wall of the fixed end 531 when the clutch clip 53 is in the closed state. The end of the shaft body 513 is axially detachably connected to the central shaft 22. When the clutch member 53 is opened, the minimum inner diameter of the fixed end 531 is smaller than the cross-sectional diameter of the boss section 511; when the clutch member 53 is fully closed, the inner diameter of the fixed end 531 is equal to the cross-sectional diameter of the boss section 511, and the inner wall of the fixed end 531 is in clearance fit with the outer wall of the boss section 511. In some embodiments, a first clamping structure 5131 is provided at the end of the shaft body 513, and a second clamping structure 224 is provided on the central shaft 22. Specifically, the second clamping structure 224 is provided at the shaft connection end 222 of the central shaft 22; when the first clamping structure 5131 is clamped with the second clamping structure 224, the relative rotation between the connecting shaft 51 and the central shaft 22 can be restricted, and the rotation of the connecting shaft 51 drives the central shaft 22 to rotate together. In this embodiment, the connecting shaft 51 can move between a first position and a second position relative to the clutch member 53. When the connecting shaft 51 is in the first position, the first clamping structure is clamped with the second clamping structure, the clutch member 53 is connected to the fixed seat 21, and the connecting seat 52 and the clutch member 53 are sleeved outside the boss section 511; when the connecting shaft 51 is controlled to move proximally from the first position, the boss section 511 no longer presses the fixed end 531, and the clutch member 53 returns to its elastic initial free state. At this time, the inner hole of the fixed end 531 is approximately elliptical, the clutch end 532 opens, and the first clamping structure is separated from the second clamping structure.

[0063] In some embodiments, a transition section 514 is provided between the boss section 511 and the shaft body 513. The transition section 514 is a tapered inclined surface connecting the boss section 511 and the shaft body 513. The setting of the transition section 514 plays a guiding role when the boss section 511 presses the fixed end 531 of the clutch member 53 when the connecting shaft 51 moves distally, so that the clutch end 532 can be smoothly closed. Specifically, it enables the boss section 511 to smoothly enter the fixed end 531 with an approximately elliptical inner hole downward.

[0064] In some embodiments, the boss section 511 can be arranged to be sleeved on the shaft body 513 in a split manner. When the boss section 511 is arranged to be sleeved on the shaft body 513 in a split manner, the shaft body 513 can rotate freely relative to the boss section 511, which is convenient for processing, disassembly and assembly. Limiting structures for axially limiting the boss section 511 are provided at both ends of the boss section 511. Exemplarily, a protruding limiting shoulder 515 is provided at one end of the boss section 511, and a limiting sleeve 516 is provided at the other end. In some other embodiments, the boss section 511 can also be integrally formed with the shaft body 513. The connecting shaft 51 in this embodiment is used for power transmission between the conveying control mechanism and the tissue fixing mechanism. The rotation of the connecting shaft 51 drives the rotation of the central shaft 22, and the connecting shaft 51 and the central shaft 22 are axially separable, that is, it can provide driving force for the tissue fixing mechanism and can also control the separation between the clutch assembly 5 and the tissue fixing mechanism.

[0065] Further, a channel 512 communicating with the transmission shaft 4 and the central shaft 22 is provided in the connecting shaft 51. Specifically, the channel 512 communicates with the inner cavity of the transmission shaft 4 and the central cavity 223 of the central shaft 22.

[0066] The valve repair system in this embodiment further includes a guide member 7, and the guide member 7 is disposed in the inner cavity of the transmission shaft 4, the channel 512 and the central cavity 223. In some embodiments, the guide member 7 can be a guide wire.

[0067] The valve repair system first establishes a delivery path through the guide member 7 and the delivery outer tube. The delivery control mechanism delivers the tissue fixing mechanism along the guide member 7 through the established delivery path. Without withdrawing the guide member, the tissue fixing mechanism can be loaded and delivered multiple times, and the tissue fixing mechanism can also be retracted by the delivery control mechanism.

[0068] It should be noted that when the tissue fixing mechanism is in the heart and has completely and effectively fixed the valve leaflets, before releasing the tissue fixing mechanism, the guide member can be first passed through the tissue fixing mechanism and the delivery control mechanism along the delivery path, and then the operator can perform a normal release operation. If after the tissue fixing mechanism is released, it is evaluated that the state of the tissue fixing mechanism is stable, and no dangerous situations such as unilateral detachment of the tissue fixing mechanism from the valve leaflets or large mobility occur, and the treatment effect reaches the predetermined goal, then the guide member can be smoothly withdrawn to complete the operation; if the above-mentioned unexpected situations occur, or the treatment effect does not reach the predetermined goal, the delivery control mechanism can be controlled to find the tissue fixing mechanism along the guide member, and the release action of the tissue fixing mechanism can be reversed, so that the tissue fixing mechanism can be retracted again, and the valve leaflets can be re-captured and fixed according to requirements until the repair is completed.

[0069] Specifically, the retraction process of the tissue fixation mechanism in this embodiment: Control the delivery tube assembly 3 and the drive shaft 4 to be pushed synchronously towards the distal end along the guide 7. Under the observation of X-ray imaging or ultrasonic imaging, determine that the opened clutch member 53 has contacted the base connection end 211 of the fixed seat 21; Keep the delivery tube assembly 3 stationary, and synchronously push the drive shaft 4 towards the distal end, thereby pushing the connecting shaft 51. The boss section 511 of the connecting shaft 51 presses the fixed end 531 of the clutch member 53, causing the clutch end 532 to close. The clutch member 53 is connected to the fixed seat 21, and at the same time, the connecting shaft 51 is also reconnected to the central shaft 22.

[0070] When the clutch member of the present application is separated from the base connection end, it only needs to axially pull the connecting shaft towards the proximal end. During the process of the separation of the connecting shaft and the central shaft, the clutch end of the clutch member sleeved on the outside thereof opens and separates from the base connection end. During the separation process, the base connection end remains stationary, the separation stability is high, the steps are simple and fast. The clutch member can undergo reversible deformation, and the tissue fixation mechanism can be loaded multiple times, realizing the reuse of the delivery control mechanism and reducing the surgical cost.

[0071] The connecting shaft of the clutch assembly of the present application is axially separable from the central shaft. The connecting shaft is arranged through the clutch member. When the clutch member is completely closed, the boss section of the connecting shaft has a clearance fit with the inner cavity of the clutch member, ensuring the connection stability between the delivery control mechanism and the tissue fixation mechanism when separation is not required. By rotating the connecting shaft, a driving force can be provided for the tissue fixation mechanism, and axially pulling the connecting shaft can also control the separation between the clutch assembly and the tissue fixation mechanism.

[0072] Without conflict, the above-mentioned embodiments and the features in the embodiments in this article can be combined with each other.

[0073] The above-disclosed is only a preferred exemplary embodiment of the present invention. Of course, it cannot be used to limit the scope of the rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention still fall within the scope covered by the present invention.

Claims

1. A valve repair system with a clutch assembly, characterized in that, Comprising: An organization fixing mechanism, including a fixing component (2), the fixing component (2) including a fixing base (21) and a central shaft (22) disposed within the fixing base (21), the fixing base (21) including a base connection end (211); A conveying control mechanism, including a conveying pipe component (3), a transmission shaft (4), and a clutch component (5), the transmission shaft (4) being located within the conveying pipe component (3), the clutch component (5) being detachably connected to the organization fixing mechanism; The clutch component (5) includes a connecting shaft (51), a connecting seat (52), and a clutch member (53), the connecting shaft (51) passing through the connecting seat (52) and the clutch member (53), one end of the connecting shaft (51) being connected to the transmission shaft (4), and the other end of the connecting shaft (51) being axially detachably connected to the central shaft (22); the connecting seat (52) is used to connect the conveying control mechanism and the clutch member (53); when the conveying control mechanism drives the transmission shaft (4) and the connecting shaft (51) to move proximally, the clutch member (53) separates from the base connection end (211), causing the connecting shaft (51) to separate from the central shaft (22).

2. The valve repair system according to claim 1, wherein The clutch member (53) includes a fixed end (531) connected to the connecting seat (52) and a clutch end (532) detachably connectable to the base connection end (211).

3. The valve repair system according to claim 2, wherein The clutch end (532) includes a first half clip (5321) and a second half clip (5322) connected to each other, the first half clip (5321) and the second half clip (5322) being configured to be able to open or close relative to each other.

4. The valve repair system according to claim 3, wherein Both the first half clip (5321) and the second half clip (5322) are provided with clamping portions (5323), and the base connection end (211) is provided with a clamping cooperation portion (212) corresponding to the clamping portion (5323); The clamping portion (5323) is in mating connection with the clamping cooperation portion (212) to axially and circumferentially restrict the fixing base (21).

5. The valve repair system according to claim 3, wherein The fixed end (531) is provided with a connection hole (5311), and an open gap (5312) is provided on one side of the connection hole (5311) facing the clutch end (532), so that the first half clip (5321) and the second half clip (5322) can open along the open gap (5312).

6. The valve repair system according to claim 2, wherein The clutch member (53) is made of an elastic material.

7. The valve repair system according to claim 1, wherein, The connecting shaft (51) includes a boss section (511) and a shaft body (513), the cross-sectional diameter of the boss section (511) being greater than the cross-sectional diameter of the shaft body (513).

8. The valve repair system according to claim 7, wherein, When the clutch member (53) opens, the minimum inner diameter of the fixed end (531) is less than the cross-sectional diameter of the boss section (511); When the clutch member (53) is fully closed, the inner diameter of the fixed end 531 is equal to the cross-sectional diameter of the boss section (511), and the inner wall of the fixed end 531 has a clearance fit with the outer wall of the boss section (511).

9. The valve repair system according to claim 3, wherein The first half clip (5321) is provided with a first hinge structure, and the second half clip (5322) is provided with a second hinge structure. The first hinge structure is cooperatively connected with the second hinge structure so that the first half clip (5321) and the second half clip (5322) can be relatively opened or closed.

10. The valve repair system according to claim 1, characterized in that, The connection base (52) includes a conveying connection end (521) and a clutch connection end (522). The conveying connection end (521) is used for connecting with the conveying pipe assembly (3). The clutch connection end (522) includes a connecting portion (523) protruding axially towards the distal end, and the clutch connection end (522) is connected with the clutch member (53) through the connecting portion (523).

11. The valve repair system according to claim 7, characterized in that, The boss section (511) is provided as a split sleeve sleeved on the shaft body (513).

12. The valve repair system according to claim 7, wherein, The connecting shaft (51) has a channel (512) that penetrates and communicates the transmission shaft (4) and the central shaft (22).

13. The valve repair system according to claim 7, wherein It includes a guide member (7), and the guide member (7) is disposed through the inner cavity of the transmission shaft (4), the channel (512), and the central cavity (233) of the central shaft (22).

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