Anchoring device and anchor carrier

Abstract

The present application relates to the technical field of medical devices, in particular to an anchor device, an anchor delivery device and a transmission device, wherein the anchor device comprises a pin body, a lead device sleeved on the pin body and rotatable relative to the pin body, an anchor base connected to the pin body and capable of driving the pin body to rotate, and the anchor base is provided with a connecting thread for detachable connection with the anchor delivery device.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to an anchor device and an anchor delivery device. Background Technology

[0002] Tricuspid regurgitation, or tricuspid regurgitation, is a structural valvular heart disease in which the tricuspid valve, located between the right atrium and right ventricle, fails to close completely during right ventricular contraction (systole). This allows blood to flow backward from the right ventricle into the right atrium, increasing blood volume and pressure in both the right atrium and ventricle, and potentially increasing central venous blood volume and pressure if severe enough. Causes are classified as primary or secondary. Primary tricuspid regurgitation refers to a defect present only in the tricuspid valve, such as infective endocarditis; secondary tricuspid regurgitation refers to a valvular defect caused by other pathologies, such as left ventricular failure or pulmonary hypertension.

[0003] The mechanism is that right ventricular dilation causes dilation of the valve base (valve annulus), resulting in the three leaflets being too far apart to touch; or one or more of the three leaflets are abnormal. Mild tricuspid regurgitation may not affect the body. However, as the condition worsens, the effects increase. Moderate to severe tricuspid regurgitation can alter the shape of the heart. This can lead to permanent heart damage, resulting in heart failure and death.

[0004] Mitral regurgitation, or mitral regurgitation, is a structural valvular heart disease in which the mitral valve fails to close properly when the heart pumps blood. Specifically, when the left ventricle contracts, blood flows backward through the mitral valve into the left atrium, an abnormal phenomenon. Mitral regurgitation is the most common form of valvular heart disease. Its causes are classified as primary and secondary. Mitral regurgitation is caused by problems with the mitral valve itself. Secondary mitral regurgitation is primarily due to left ventricular dilation leading to stretching of the mitral annulus and displacement of the papillary muscles.

[0005] Currently, mild mitral and tricuspid regurgitation is mainly treated with medication. Severe cases are primarily treated with replacement and repair surgery, with surgery being the main approach. Although these methods have shown some clinical effectiveness, they still have certain limitations. Replacement surgery removes the subvalve device, which can lead to systolic dysfunction; anticoagulation is required; and there is a perpetual risk of endorphinitis and thromboembolism. Repair surgery is time-consuming; and it is difficult to teach and learn.

[0006] For the treatment of tricuspid regurgitation or mitral regurgitation, transcatheter interventional therapies are currently being vigorously developed, but the products are still immature. Surgical replacement and repair procedures are more difficult, have a higher failure rate, are more invasive to patients, have longer postoperative healing times, and are often accompanied by complications. While some transcatheter replacement products are available on the market, the essence of replacement surgery is still replacing the body's own function, which frequently leads to complications over time and is not a long-term effective treatment. Transcatheter repair procedures present significant challenges in fixing and detaching devices at the lesion site, and currently, very few suitable products and techniques exist. Summary of the Invention

[0007] The present invention provides an anchor device, an anchor conveyor, and a transmitter that are beneficial to improving release stability.

[0008] On one hand, this application provides an anchor device, comprising: an anchor body, a lead wire sleeved on the anchor body and rotatable relative to the anchor body, and an anchor seat connected to the anchor body and capable of driving the anchor body to rotate; the anchor seat is provided with a connecting thread for connecting to an anchor conveyor.

[0009] Preferably, in the above-described anchor device, the anchor seat has a first receiving cavity provided axially from its proximal end toward its distal end and the connecting thread is provided in the first receiving cavity, and the anchor seat has a second receiving cavity provided axially from its distal end toward its proximal end for fixing the nail body.

[0010] Preferably, in the above-mentioned anchor device, the anchor seat is any one of a cylinder, a polygonal column, or an irregularly shaped column.

[0011] Preferably, in the above-mentioned anchor device, the lead wire is an annular lead wire post with a lead wire hole, or the lead wire is an annular body with a lead wire hole.

[0012] In another aspect, this application provides an anchor conveyor, comprising: a drive rod, and a conveying connector connected to the drive rod and rotatable under the drive rod, the conveying connector being provided with a conveying connection portion for detachably threaded connection with the anchor device.

[0013] Preferably, in the above-described anchor conveyor, the proximal end of the conveying connector is provided with a connecting groove for connecting the drive rod, and the distal end of the conveying connector is provided with a conveying connection portion for connecting the anchor device.

[0014] Preferably, the above-mentioned anchor conveyor includes a conveying tube body accommodating a drive rod and an anchor fixing device connected to the conveying tube body; the anchor fixing device includes a proximal connection port located at its proximal end and a distal connection port located at its distal end, the diameter of the proximal connection port being adapted to the conveying connector, and the distal connection port being adapted to the anchor seat of the anchor device; the distal end of the conveying tube body is fixedly connected to the proximal end of the anchor fixing device.

[0015] Preferably, the above-mentioned anchor conveyor includes: a transmission tube and a handle assembly installed at the proximal end of the transmission tube, wherein the transmission tube is provided with a through cavity through which the anchor conveyor device passes.

[0016] Preferably, in the above-described anchor conveyor, the conveying tube comprises:

[0017] first tube body;

[0018] The second tube is sleeved on the first tube to form a through cavity for accommodating the anchor device and the anchor conveyor.

[0019] Preferably, in the above-mentioned anchor conveyor, the transmission tube is provided with a lead wire slot.

[0020] Compared with existing technologies, the advantages of this application include:

[0021] 1. The anchor seat of the anchor device provided in this application has a connecting thread for connecting with the anchor conveyor, thus enabling a threaded connection with the anchor conveyor. After the anchor device is positioned, it is released in a spiral manner, improving the stability of the release. In addition, the lead wire of the anchor device in this application can rotate around the anchor body, thus reducing the risk of lead wire entanglement and interference.

[0022] 2. The anchor conveyor provided in this application includes a conveying connector connected to a drive rod. This conveying connector has a threaded connection portion that is detachably threaded to the anchor device, thus enabling threaded connection with the anchor device. After the anchor device is positioned, it is released via a helical mechanism, improving release stability. Furthermore, the connection between the drive rod and the anchor device is achieved through the conveying connector, and the thread of the connection portion can be provided on the conveying connector, which facilitates the versatility of the anchor conveyor. Attached Figure Description

[0023] Figure 1 A cross-sectional view of an anchor device provided in an embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram of the structure of an anchor device provided in an embodiment of the present invention;

[0025] Figure 3A cross-sectional view of an anchor seat for an anchoring device provided in an embodiment of the present invention;

[0026] Figure 4 A cross-sectional view of an anchor seat for an anchoring device provided in an embodiment of the present invention;

[0027] Figure 5 This is a front view of an anchor seat for an anchoring device provided in an embodiment of the present invention;

[0028] Figure 6 This is a schematic diagram of the structure of an anchor device provided in an embodiment of the present invention;

[0029] Figure 7 This is a schematic diagram of the structure of an anchor device provided in an embodiment of the present invention;

[0030] Figure 8 This is a schematic diagram of the structure of an anchor device provided in an embodiment of the present invention;

[0031] Figure 9 This is a schematic diagram of the structure of the lead wire device in an anchor conveyor provided by an embodiment of the present invention;

[0032] Figure 10 This is a schematic diagram of the structure of a nail body in an anchor conveyor provided in an embodiment of the present invention;

[0033] Figure 11 This is a schematic diagram of the structure of a nail body in an anchor conveyor provided in an embodiment of the present invention;

[0034] Figure 12 This is a schematic diagram of the structure of a nail body in an anchor conveyor provided in an embodiment of the present invention;

[0035] Figure 13 This is a schematic diagram of the structure of a nail body in an anchor conveyor provided in an embodiment of the present invention;

[0036] Figure 14 This is a schematic diagram of the structure of an anchor conveyor provided in an embodiment of the present invention;

[0037] Figure 15 This is a schematic diagram of the structure of a conveying connector in an anchor conveyor according to an embodiment of the present invention;

[0038] Figure 16 This is a schematic diagram of the structure of a conveying connector in an anchor conveyor according to an embodiment of the present invention;

[0039] Figure 17 This is a schematic diagram of the structure of an anchor seat fixer in an anchor delivery device provided by an embodiment of the present invention;

[0040] Figure 18 This is a schematic diagram of the structure of an anchor conveyor provided in an embodiment of the present invention;

[0041] Figure 19 This is a schematic diagram of the structure of an anchor seat fixer in an anchor delivery device provided by an embodiment of the present invention;

[0042] Figure 20 This is a schematic diagram of an anchor conveyor structure provided in an embodiment of the present invention;

[0043] Figure 21 This is an enlarged schematic diagram of a partial component of an anchor conveyor structure provided in an embodiment of the present invention;

[0044] Figure 22 This is a schematic diagram of the axial movement process of an anchor bolt in an anchor bolt conveyor provided in an embodiment of the present invention;

[0045] Figure 23 This is a schematic diagram of the anchor rotation process of an anchor conveyor provided in an embodiment of the present invention;

[0046] Figure 24 This is a schematic diagram of the anchor release movement of an anchor conveyor provided in an embodiment of the present invention;

[0047] Figure 25 This is a schematic diagram of the transmission tube structure of an anchor conveyor provided in an embodiment of the present invention. Detailed Implementation

[0048] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0049] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0050] In the description of this invention, it should be noted that, in the field of interventional medical devices, the proximal end refers to the end closer to the operator, while the distal end refers to the end farther from the operator; the axial direction refers to the direction parallel to the line connecting the center of the distal end and the center of the proximal end of the medical device in its natural state. The above definitions are for ease of expression only and should not be construed as limiting the invention.

[0051] In some embodiments, an anchor device includes: an anchor body; a lead wire fitted onto the anchor body and rotatable relative to the anchor body; and an anchor seat connected to the anchor body and capable of rotating the anchor body, the anchor seat having connecting threads for detachable connection with an anchor delivery device.

[0052] Indicatively, such as Figure 1 , 2 An anchor device 1000 is provided, wherein the nail body 12 is inserted into the second receiving cavity 112 to achieve a static connection between the anchor seat 11 and the nail body 12. When the anchor device reaches the target area, the anchor seat 11 rotates in a predetermined direction to drive the nail body 12 to anchor into human tissue.

[0053] During use, a flexible slender member is inserted into the lead wire 13 of the anchor device. When the first anchor device, carrying the flexible slender member, reaches the target position or target area under the drive of the anchor conveyor, a force is applied to the anchor conveyor. Under the action of this force, the nail body 12 pierces into the target position or target area and is firmly fixed. After the anchor device is fixed, the next anchor device with the flexible slender member is conveyed until all anchor devices are conveyed. Then, the flexible slender member is tightened. The tension of the flexible slender member causes the target tissue to shrink. When the target tissue shrinks to the expected state, the proximal end of the flexible slender member is locked. For example, a clampable column is set at the distal end of the flexible slender member. When it is necessary to fix the flexible slender member, the column is clamped so that the flexible linear object inserted into the column is statically connected to the column to achieve the locking purpose.

[0054] The flexible, slender component includes, but is not limited to, silk, thread, rope, strip, and band, as long as the length of the flexible, slender component is sufficient and the material is suitable for implantation into the human body. Preferably, the flexible, slender component is a medical suture.

[0055] Under the action of the anchor conveyor, multiple anchor devices with the same flexible linear object inserted are fixed at the target position or target area. The flexible slender part is tightened so that it drives the target position or target area to move. When the target tissue is adjusted to the expected position, the flexible slender part is locked to achieve the purpose of valve ring repair.

[0056] The anchor seat of the anchor device provided in this application has a connecting thread for connection with the anchor conveyor, thus enabling a threaded connection with the anchor conveyor. After the anchor device is positioned, it is released in a spiral manner, improving the stability of the release. In addition, the lead wire of the anchor device in this application can rotate around the anchor body, thereby reducing the risk of lead wire entanglement and interference.

[0057] like Figure 1 , 2 As shown, in some embodiments, the anchor 11 has a first receiving cavity 111 axially formed from its proximal end face, and the connecting thread 1110 is provided within the first receiving cavity. The anchor 11 has a second receiving cavity 112 axially formed from its distal end face for fixing the nail body. With the connecting thread in the first receiving cavity, the anchor delivery device, rotatably connected to the first receiving cavity, has an external thread corresponding to the connecting thread. When the anchor delivery device is rotatably connected to the receiving cavity via the external thread, the anchor and the anchor delivery device are rigidly connected to achieve the connection between the anchor delivery device and the anchor device. The force acting on the anchor delivery device can be stably transmitted to the anchor device, ensuring that the anchor device stably and controllably penetrates the target tissue.

[0058] Furthermore, in some embodiments, such as Figure 3 As shown, both the first receiving cavity 111 and the second receiving cavity 112 are circular. The first receiving cavity 111 can communicate with the second receiving cavity 112. In the connected state, the diameter of the first receiving cavity 111 is not less than the diameter of the second receiving cavity 112. A stepped surface is formed between the first receiving cavity 111 and the second receiving cavity 112. When the anchor conveyor is connected to the first receiving cavity, the maximum travel distance of the anchor conveyor relative to the first receiving cavity 111 is the distance from the end face of the first receiving cavity 111 to the stepped surface. In some embodiments, such as Figure 4 As shown, the first receiving cavity 111 can be independent of the second receiving cavity 112. In the independent state, the diameter of the first receiving cavity 111 and the diameter of the second receiving cavity 112 can be set independently.

[0059] In some embodiments, the anchor is a circular, polygonal, or other shaped column. For example... Figure 5 , Figure 6 , Figure 7 The shape of the column shown is such that the shape of the anchor is determined according to the actual application. For example, if the following is adopted... Figure 6 or Figure 7 The non-circular main body shown is designed to facilitate the connection between the anchor seat and the anchor delivery device.

[0060] In some embodiments, the lead wire 13 is an annular lead wire post with a lead wire hole 131, the annular lead wire post being fitted around the proximal end of the nail body 122, or onto the anchor 11; schematically, as shown Figure 7 , Figure 8 As shown, the lead wire device 13 is an annular lead wire post with a lead wire hole 131, and the annular lead wire post is fitted onto the proximal end of the nail body 122. Further schematically, as... Figure 4As shown, the lead wire 13 is an annular lead wire post with a lead wire hole 131. The annular lead wire post is fitted onto the anchor 11. Furthermore, the annular lead wire post can be located on the proximal end of the anchor 11 or on the distal end of the anchor 11.

[0061] It should be noted that the lead wire 13 can also be located in other components, which is intended to make the annular lead wire post rotate axially relative to the anchor 11 or the nail body 122 so that the lead wire hole 131 is adapted to the force point of the flexible slender member. After the lead wire 13 or the lead wire hole 131 is adapted to the flexible slender member, a force is applied to the flexible slender member. This force drives the anchor device to move and adjust the target tissue to the expected position.

[0062] In some embodiments, the lead wire 13 is a ring, such as Figure 9 As shown, the ring body is disposed on the end face of the anchor 11 facing the nail body, and the ring body rotates around a connecting end as a fulcrum. Specifically, the ring body includes a connecting end 132 and the annular body. The connecting end 132 is movably disposed on the end face of the anchor 11 facing the nail body. The annular body forms the lead hole 131. The flexible elongated member passes through the lead hole 131 and can slide in the lead hole 131. Pulling the flexible elongated member can bring the anchor devices closer together, thereby causing the valve annulus tissue to tighten. Because the volume of the ring body is relatively small and it is fixed inside the human body, the resistance to blood flow is relatively reduced, thus reducing the impact on blood flow.

[0063] In some embodiments, the nail body 12 includes a nail body connecting section 122 located at the proximal end and an anchor member 121 located at the distal end. The nail body connecting section 122 is connected to the anchor member 121. The nail body connecting section 122 passes through the second receiving cavity 112 and is connected to the anchor seat 11. The nail tip of the anchor member 121 is used to penetrate human tissue under the action of external force. The nail helical section is used to rotate into the human tissue after the nail tip penetrates the human tissue to fix the anchor member 121 to the human tissue.

[0064] In some embodiments, such as Figure 1 As shown, the nail body 10 includes an anchor body 121, which may be a spiral anchor. Under the action of a force in the rotational direction, the spiral anchor contacts and penetrates the target tissue. With the continuous application of the force, the contact area between the spiral anchor and the target tissue continuously increases until the spiral anchor is fixed to the target tissue. Further, the nail body 10 also includes a nail body connecting section 122, and the annular lead post (e.g.) Figure 2The lead wire 13 shown is fitted onto the nail body connecting section 122 and rotates axially around the nail body connecting section 122. Furthermore, the nail body connecting section 122 and the spiral anchor can be integrally formed to create the nail body 12.

[0065] In some implementations, such as Figure 10 As shown, the nail body 12 includes an anchor body 121, which can be a conical anchor. The conical anchor includes a conical support post, and a spiral engaging piece is disposed around the conical support post. The spiral engaging piece extends spirally around the conical support post, starting from the apex of the conical support post. Under the action of a force in the rotational direction, the top of the conical support post of the conical anchor connector penetrates the target tissue. Subsequently, the spiral engaging piece contacts the target tissue, and as the force continues to act, the contact area between the spiral engaging piece and the target tissue increases.

[0066] In some embodiments, the nail body 12 includes an anchor body 121, which may be a hook-shaped anchor, and the hook-shaped anchor may be formed of a shape memory alloy material, such as... Figure 11 As shown, the hook-shaped anchor is straight when it has not penetrated the target tissue, but becomes hook-shaped when it contacts the target tissue at a temperature suitable for its memory function. Figure 12 As shown, the nail body 12 may include at least one hook-shaped anchor, preferably, the nail body 12 includes at least two hook-shaped anchors, and the tips of the at least two hook-shaped anchors have different orientations.

[0067] In some embodiments, the nail body 12 includes an anchor body 121, such as Figure 13 As shown, the anchor body 121 can be a claw-shaped anchor, which can be formed of shape memory alloy material. The claw-shaped anchor is straight when it does not penetrate the target tissue, and it becomes claw-shaped and grips the target tissue after penetrating it.

[0068] In some embodiments, other structures and shapes of nail bodies 12 may also be used. The several nail body 12 structures provided in this disclosure are merely illustrative examples and are not intended to further limit the nail body 12.

[0069] Example 2

[0070] like Figure 14 As shown, this application further provides an anchor delivery device, comprising:

[0071] It includes a drive rod 4 and a conveying connector 5 that is connected to the drive rod 4 and rotatable under the drive of the drive rod 4. The conveying connector 5 is provided with a conveying connection part 511 for detachable threaded connection with the anchor device.

[0072] During the conveying process, the anchor conveyor and the anchor device with the flexible elongated member inserted are fixedly connected through the conveying connection 511. When the anchor device is conveyed to the target position, a rotational force is applied to the drive rod 4. Under the action of this rotational force, the nail body 12 of the anchor device enters the target position or target area and is firmly fixed. After the anchor device is fixed, a force is applied to the drive rod 4 to separate the anchor device from the conveying connection 5, thus releasing the current anchor device. After one anchor device is fixed, the next anchor device with the flexible elongated member is conveyed until all anchor devices have been conveyed. After the anchor devices are conveyed, the flexible elongated member is tightened. The tension of the flexible elongated member causes the annular tissue to shrink. When the target tissue shrinks to a predetermined state, the proximal end of the flexible elongated member is fixed.

[0073] This application provides an anchor delivery device including a delivery connector connected to a drive rod. The delivery connector has a threaded connection portion that is detachably threaded to the anchor device, thus enabling threaded connection with the anchor device. After the anchor device is positioned, it is released via a helical mechanism, improving release stability. Furthermore, the connection between the drive rod and the anchor device is achieved through the delivery connector, and the threads of the connection portion can be provided on the delivery connector, which facilitates the versatility of the anchor delivery device.

[0074] In some embodiments, the length of the drive rod 4 can be determined according to the actual application. In some embodiments, when the operating component of the anchor conveyor (e.g., the operating component may be an operating handle) is close to the conveying target, the length of the drive rod 4 can be set to a short-distance rod; conversely, the drive rod can be set to a long-distance rod. Furthermore, the drive rod can be a flexible rod or a rigid rod. The drive rod can be selected according to the actual application, and no specific limitation is made here.

[0075] The conveying connector 5 has a connecting groove 52 at its near end for connecting the drive rod 4. The drive rod 4 is inserted into the connecting groove 52 so that the drive rod 4 is rigidly connected to the conveying connector 5.

[0076] In some embodiments, such as Figure 15 , 16As shown, the conveying connector 5 includes a first cylindrical body 510 and a conveying connector 511 connected to the first cylindrical body 510. The distal end of the conveying connector 5 is provided with a conveying connector 511 for connecting to an anchor device. Schematic, the conveying connector can be a cylindrical threaded connector. The conveying connector 511 is used for detachable connection with the anchor device or anchor seat. For example, the conveying connector 511 is screwed into the connecting thread 1110 of the anchor device. Under the action of the driving rod 4, the conveying connector 5 is rotated in a first predetermined direction to drive the anchor device to rotate, thereby inserting the nail and firmly gripping the target tissue. The conveying connector 511 disengages from the connecting thread 1110 of the anchor device, and under the action of the driving rod 4, the conveying connector 5 is rotated in a second predetermined direction to disengage from the anchor device. The first predetermined direction and the second predetermined direction are opposite in rotation direction; for example, if the first predetermined direction is clockwise, the second predetermined direction is counterclockwise.

[0077] In some embodiments, an anchor delivery device 2000 includes a delivery tube 7 housing a drive rod 4 and an anchor holder 6 connected to the delivery tube 7, such as... Figure 17 As shown, the anchor fixing device 6 includes a proximal connection port 61 located at its proximal end and a distal connection port 62 located at its distal end. The conveying connector 5 is connected to the anchor fixing device through the proximal connection port, and the anchor device is detachably snapped onto the anchor fixing device through the distal connection port 62; the distal end of the conveying pipe 7 is fixedly connected to the proximal end of the anchor fixing device 6.

[0078] Specifically, such as Figure 18 As shown, the diameter of the proximal connection port 61 is adapted to the conveying connector 5, and the conveying connector can rotate within the anchor holder (i.e., within the proximal connection port 61). When the conveying connection portion 511 of the conveying connector 5 is rotatably connected to the connecting thread of the anchor device through the proximal opening 61, a rigid connection is achieved between the conveying connector 5 and the anchor device.

[0079] In some embodiments, the anchor holder 6 has a distal connection port 62 adapted to the anchor device. Specifically, in some embodiments, the distal connection port 62 is used to connect the anchor seat of the anchor device. Schematic, when the end face of the anchor seat of the anchor device is circular, the distal connection port 62 of the anchor holder 6 is a circular cavity adapted to the anchor seat; when the anchor seat of the anchor device is a polygonal prism, the distal connection port 62 of the anchor holder 6 is a multi-faceted cavity to facilitate the insertion of the anchor seat of the anchor device into the anchor holder 6. For example, when the anchor device is as follows... Figure 6 The structure shown has a hexagonal connector end face, so the distal connection port 62 is as follows: Figure 17 As shown in the diagram, the anchor seat of the anchor device is inserted into the distal connection port 62 of the anchor holder 6. For example, when the anchor device is as follows... Figure 7 The structure shown has an irregularly shaped connector end face; therefore, the distal connection port 62 is as follows: Figure 19 As shown in the diagram, the anchor seat of the anchor device is inserted into the distal connector 62 of the anchor holder 6. The distal connector 62 is designed to accommodate the anchor seat of the anchor device so that the anchor seat of the anchor device is received within the anchor holder.

[0080] It should be noted that irregular shapes or irregular designs can be understood as circles or shapes other than circles. It is only necessary to ensure that the anchor and the anchor holder can mutually limit each other's position. That is, during the anchoring or rotation of the nail body 12, when using an irregular or irregularly shaped anchor, the irregular shape or irregular structure acts as a means to prevent rotation of the anchor, thus restricting the circumferential position of the anchor.

[0081] In some embodiments, an anchor delivery device 2000 further includes a delivery tube 7 housing a drive rod, the distal end of which is fixedly connected to the proximal end of an anchor holder 6 of the anchor delivery device. When the anchor device reaches the target human tissue, the delivery tube 7 drives the anchor holder 6 to rotate (e.g., the delivery tube 7 drives the anchor holder 6 to rotate clockwise). The anchor device, rotated within the anchor holder 6, has its tip inserted into and fixed to the target tissue.

[0082] Example 3

[0083] An embodiment of the present invention provides an anchor delivery device, comprising: a transmission tube and a handle assembly installed near the proximal end of the transmission tube, wherein the transmission tube has a through cavity through which the anchor delivery device passes. Figure 20 , 21 As shown, the transmission tube 8 has a through cavity through which the anchor device passes.

[0084] To facilitate the operator's delivery of the anchor bolt device via the anchor bolt conveyor 2000, the anchor bolt conveyor 2000 also includes a handle assembly 9 for operation. The handle assembly is located at the proximal end of the transmission tube 8.

[0085] In some embodiments, the anchor conveyor 2000 is movable within the transmission tube 8. Further, a drive rod of the anchor conveyor 2000 is disposed within a through cavity in the transmission tube 8, extending outwards from the outside of the transmission tube. The drive rod located outside the transmission tube 8 can be used to form the operating part of the conveyor. The transmission tube 8 may be formed from an adjustable bend tube.

[0086] The working principle of the above-mentioned anchor delivery device is as follows:

[0087] The delivery tube 8, carrying an anchor device 1000 and an anchor delivery device 2000, enters the target area (e.g., heart tissue) via a blood vessel. A rotational force is applied via a handle assembly 9, causing the handle assembly to displace the delivery tube 8 proximally. During this displacement, the anchor device 1000 extends out of the delivery tube 8 until it is fully exposed (e.g., ...). Figure 22 (As shown).

[0088] like Figure 23 As shown, a forward rotational force is applied through the handle assembly 9 to cause the handle assembly 9 to drive the drive rod to rotate clockwise, and then the rotational force is transmitted to the anchor device through the anchor holder 6, so that the tip of the anchor device penetrates into the target tissue in the human body and is fixed.

[0089] like Figure 24 As shown, a reverse rotational force is applied by the handle assembly 9 to drive the drive rod to rotate counterclockwise, causing the conveying connector and the anchor device to rotate relative to each other. When the threaded structure of the conveying connector is completely disengaged, the anchor device separates from the conveying connector, realizing the anchor release process.

[0090] During the procedure, before release, the anchor device is fixedly connected to the anchor holder and is housed within the delivery tube, cooperating with its transport function. Release requires external force to prevent unintended detachment of the anchor device, ensuring it remains under control, reducing surgical risks, and improving surgical safety.

[0091] In the above embodiment, the anchor device remains inside the delivery tube until it reaches the target area. The delivery tube protects the human tissue, the anchor delivery device, and the anchor device, preventing the human tissue from being punctured or scratched by the tip of the anchor device. After the anchor device reaches the target area, a reverse rotational force is applied to the first fixed anchor via a drive rod to separate the anchor device from the anchor delivery device. This eliminates the need for an adjustable outer sheath, reducing the need for other auxiliary instruments during surgery and saving surgical space, time, and equipment consumption.

[0092] In some embodiments, the transmission tube 8 may be formed of a multi-segment bendable tube or a protective sleeve, schematically, such as Figure 25As shown, the transmission tube 8 includes a first tube 81 and a second tube 82, wherein the second tube 82 is sleeved on the first tube 81 to form a through cavity accommodating the anchor device 1000 and the anchor conveyor 2000; the first tube 81 and the second tube 82 may be composed of rigid, biocompatible metallic or non-metallic materials. The transmission tube 8 may also be formed as a single-section adjustable tube or protective sleeve, which is not limited here.

[0093] In some embodiments, one end of the transmission tube 8 equipped with the anchor device is provided with a lead wire slot. Further, for example, the second tube 82 is provided with a lead wire slot 321 that matches the lead wire port 131. The lead wire slot 321 is provided corresponding to the lead wire port 131, and the lead wire slot 321 can keep the locking wires between multiple anchors orderly and controllable within the human tissue and delivery system, avoiding entanglement and loss of control.

[0094] It should be noted that the above description does not limit the invention to the scope of the embodiments described. It is understood that those skilled in the art, based on the principles of this device, may arbitrarily combine the various structures, or combine substructures with other structures, without departing from these principles, to make various modifications and changes in form and detail to the function of implementing the above-described device and operation. For example, the adjustable diversion device may further include a self-locking device, etc. Such modifications are all within the protection scope of this invention.

[0095] In summary, the anchor delivery device of the present invention solves the problem of instrument fixation and release in the body during transcatheter annulus repair surgery, and provides technical possibilities for improving transcatheter annulus repair surgery.

[0096] It should be noted that the above embodiments are merely examples, and the present invention is not limited to such examples, but various variations are possible.

[0097] It should be noted that, in this specification, the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0098] The above-disclosed embodiments are merely some preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. Those skilled in the art will understand that implementing all or part of the structures of the above embodiments and making equivalent changes in accordance with the claims of the present invention still fall within the scope of the present invention.

Claims

1. An anchor delivery system, comprising an anchor conveyor and an anchor device, characterized in that, The anchor conveyor includes: a drive rod, a conveying connector connected to the drive rod and rotatable under the drive of the drive rod, the conveying connector being provided with a conveying connection portion for detachable threaded connection with the anchor device; It also includes a delivery pipe body for accommodating the drive rod and an anchor fixing device connected to the delivery pipe body; the anchor fixing device includes a proximal connection port at its proximal end and a distal connection port at its distal end, the diameter of the proximal connection port being adapted to the delivery connector, and the distal connection port being adapted to the anchor seat of the anchor device; the distal end of the delivery pipe body is fixedly connected to the proximal end of the anchor fixing device. It also includes a transmission tube and a handle assembly installed near the proximal end of the transmission tube. The transmission tube has a through cavity through which the anchor device passes. A drive rod is disposed in the through cavity inside the transmission tube and extends out of the outside of the transmission tube. The transmission tube includes a first tube and a second tube, with the second tube sleeved on the first tube to form the through cavity. A lead wire slot is provided on the transmission tube. The lead wire slot is used to keep the locking wires between multiple anchors orderly and controllable within the human tissue and the anchor delivery device, avoiding entanglement and loss of control. The anchor device includes: an anchor body; a wire guide sleeved on the anchor body and rotatable relative to the anchor body; and an anchor seat connected to the anchor body and capable of driving the anchor body to rotate. The anchor seat is provided with a connecting thread for connecting to an anchor delivery device. The anchor seat has a first receiving cavity axially extending from its proximal end toward its distal end, and the connecting thread is provided in the first receiving cavity. The anchor seat has a second receiving cavity axially extending from its distal end toward its proximal end for fixing the anchor body. A stepped surface is formed between the first receiving cavity and the second receiving cavity. When the anchor conveyor is connected to the first receiving cavity, the maximum travel distance of the anchor conveyor relative to the first receiving cavity is the distance from the end face of the first receiving cavity to the step surface.

2. The anchor delivery system according to claim 1, characterized in that, The anchor can be any one of a cylinder, a polygonal column, or an irregularly shaped column.

3. The anchor delivery system according to claim 1, characterized in that, The lead wire device is an annular lead wire post with lead wire holes, or the lead wire device is an annular body with lead wire holes.

4. The anchor delivery system according to claim 1, characterized in that, The near end of the conveying connector is provided with a connecting groove for connecting the drive rod, and the far end of the conveying connector is provided with a conveying connection part for connecting the anchor device.

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