Clamping instrument and clamping assembly

Abstract

The invention provides a clamping instrument and a clamping assembly, which mainly comprise a positioning base, a movable base, at least two clamping arms connected with the movable base, at least two linkage arms respectively connected with the clamping arms and the positioning base, and actuating rods respectively arranged in the positioning base and the movable base in a penetrating manner, the positioning base circumferentially rotates relative to the actuating rod and is axially fixed, meanwhile, the moving base circumferentially rotates relative to the actuating rod and axially moves, and when the actuating rod circumferentially rotates, the distance between the moving base and the positioning base can be changed. Therefore, the clamping arms are linked to rotate relative to the movable base to be located at the unfolding position or the clamping position so as to clamp the preset part of the human tissue, so that the rotation amplitude of the clamping arms can be finely adjusted, and high-precision clamping force can be provided.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of medical devices, and in particular to a clamping device and a clamping assembly for a heart valve ring. Background Art

[0002] The tricuspid valve is located at the right atrioventricular orifice. The most common symptom is tricuspid regurgitation, which means that blood flows back from the right ventricle into the right atrium during systole, causing the right atrium to expand, increase pressure, and obstruct venous blood return. As the right ventricle increases in load, it compensates and hypertrophies, making right heart failure more likely.

[0003] Tricuspid regurgitation is generally caused by pulmonary hypertension, right ventricular enlargement, and dilation of the tricuspid valve ring. Clinically, the symptoms of the causes of tricuspid regurgitation (left heart failure, pulmonary hypertension, etc.) are often the most common. After tricuspid regurgitation occurs, right heart failure symptoms such as fatigue, ascites, edema, liver pain, indigestion, and poor appetite worsen. Mild tricuspid regurgitation has no obvious clinical symptoms, but severe regurgitation requires surgical treatment.

[0004] Traditional treatments include drug therapy and surgical methods with corresponding surgical indications. Among them, surgical methods also include valve replacement and valve repair. Among surgical methods, typical open-chest and open-heart surgery are too invasive and require extracorporeal circulation, which has a high incidence of complications and infection risks. Many patients cannot tolerate the huge surgical risks and can only wait for death.

[0005] Currently, there are several products for minimally invasive transcatheter treatment of tricuspid regurgitation in clinical use, but they are all in the experimental stage and have not yet achieved mature application, and each technology has limitations.

[0006] In view of this, how to overcome the various limitations existing in the prior art is the technical problem to be solved in this application. Summary of the invention

[0007] In view of the above problems, the main purpose of the present application is to provide a clamping device and a clamping assembly, which can finely adjust the rotation range of the clamping arm, provide precise clamping force, and are not prone to clamping human tissue.

[0008] Another object of the present application is to provide a clamping device and a clamping assembly, which have a simple structure and are easy to operate, and can also be used for clamping operations of human tissues of different thicknesses, and have a wide range of applications.

[0009] To achieve the above-mentioned purpose and other related purposes, an embodiment of the present application provides a clamping device for clamping a preset part of human tissue, which includes: a positioning base, which has a first penetration channel; a moving base, which has a second penetration channel; at least two clamping arms, one end of each of the clamping arms is respectively connected to the moving base to provide each of the clamping arms with respect to the moving base to rotate in an expanded position or a clamping position; at least two connecting arms, the two ends of each of the connecting arms are respectively connected to the positioning base and each of the clamping arms, so that each of the clamping arms is indirectly connected to the positioning base; and an actuator rod, which is respectively penetrated in the first penetration channel and the second penetration channel to provide the positioning base and the moving base with a plurality of connecting arms. The seat is coaxially assembled on the actuating rod, and the positioning base can rotate circumferentially and be fixed axially relative to the actuating rod, and the moving base can rotate circumferentially and move axially relative to the actuating rod; wherein, when the actuating rod rotates circumferentially, the distance between the moving base and the positioning base can be changed, and each of the clamping arms can be linked to rotate relative to the moving base; and wherein, when each of the clamping arms is in the expanded position relative to the moving base, it can be respectively positioned at the preset position of the human tissue; when each of the clamping arms is in the clamping position relative to the moving base, the preset position of the human tissue can be clamped by the coordinated cooperation of each of the clamping arms.

[0010] Optionally, in an embodiment of the present application, when the actuating rod rotates circumferentially along a first direction, the distance between the mobile base and the positioning base gradually decreases, so that each of the clamping arms rotates relative to the mobile base and gradually rotates from the deployed position to the clamping position; when the actuating rod rotates circumferentially along a second direction opposite to the first direction, the distance between the mobile base and the positioning base gradually increases, so that each of the clamping arms rotates relative to the mobile base and gradually rotates from the clamping position to the deployed position.

[0011] Optionally, in an embodiment of the present application, the setting position of the movable base is closer to the distal end of the actuating rod than the setting position of the positioning base.

[0012] Optionally, in an embodiment of the present application, a first adjustment unit is further provided at a position on the actuating rod corresponding to the position of the mobile base, and the mobile base is provided with a second adjustment unit, wherein the first adjustment unit and the second adjustment unit are structurally adapted to provide the mobile base with circumferential rotation and axial movement relative to the actuating rod.

[0013] Optionally, in an embodiment of the present application, the first adjustment unit is an external thread formed on the actuating rod, and the second adjustment unit is an internal thread formed in the second penetration channel of the mobile base.

[0014] Optionally, in an embodiment of the present application, the clamping device further includes a limiting structure, which is used to define a maximum movement range of the movable base for axial movement relative to the actuating rod.

[0015] Optionally, in an embodiment of the present application, each of the clamping arms further includes a proximal end of the clamping arm connected to the movable base, and the limiting structure is disposed at the proximal end of each of the clamping arms.

[0016] Optionally, in an embodiment of the present application, the clamping device further comprises a positioning structure, which is disposed between the actuating rod and the positioning base, and is used to limit the axial movement of the actuating rod relative to the positioning base when the actuating rod rotates circumferentially.

[0017] Another embodiment of the present application provides a clamping device for clamping a preset part of human tissue, which specifically includes: a positioning base, which has a first penetration channel; a moving base, which has a second penetration channel; at least two clamping arms, one end of each of the clamping arms is respectively connected to the positioning base, so that each of the clamping arms can rotate relative to the positioning base to be in an expanded position or a clamping position; at least two connecting arms, the two ends of each of the connecting arms are respectively connected to the moving base and each of the clamping arms, so that each of the clamping arms is indirectly connected to the moving base; and an actuating rod, which is respectively penetrated in the first penetration channel and the second penetration channel, so that the positioning base and the moving base are coaxially assembled at On the actuating rod, the positioning base can rotate circumferentially and be axially fixed relative to the actuating rod, and the mobile base can rotate circumferentially and move axially relative to the actuating rod; wherein, when the actuating rod rotates circumferentially, the distance between the mobile base and the positioning base can be changed, and each of the clamping arms can be linked to rotate relative to the mobile base; and wherein, when each of the clamping arms is in the expanded position relative to the mobile base, it can be respectively positioned at the preset position of the human tissue; when each of the clamping arms is in the clamping position relative to the mobile base, the preset position of the human tissue can be clamped by the coordinated cooperation of each of the clamping arms.

[0018] Optionally, in an embodiment of the present application, the positioning base is disposed at a position closer to the distal end of the actuating rod than the movable base is disposed at a position.

[0019] Optionally, in an embodiment of the present application, the clamping device may also be connected to an external conveying device, and the conveying device has a conveying member and a driving member, wherein the conveying member is connected to the movable base of the clamping device to limit the circumferential rotation of the movable base; the driving member is connected to the actuating rod of the clamping device to drive the actuating rod to rotate circumferentially.

[0020] Optionally, in an embodiment of the present application, the conveying member and the driving member are respectively connected to the positioning base and the actuating rod at the proximal end of the actuating rod, or the conveying member and the driving member are respectively connected to the positioning base and the actuating rod at the distal end of the actuating rod, or the conveying member and the driving member are respectively connected to the positioning base and the actuating rod at both ends of the actuating rod.

[0021] The present application also provides a clamping assembly for clamping a preset part of human tissue, which includes: an auxiliary support member for providing auxiliary support inside the human tissue so that the preset part of the human tissue is in a convex state; and the clamping device described in the above embodiments, which is used to clamp the preset part in a convex state and the auxiliary support member.

[0022] Optionally, in an embodiment of the present application, the preset position includes a first side and a second side that are relatively arranged, wherein the auxiliary support member abuts against the preset position on the first side of the preset position, and the clamping device clamps the preset position and the auxiliary support member on the second side of the preset position, so that the preset position is clamped between the auxiliary support member and the clamping device.

[0023] It can be seen from the above technical solution that the clamping device provided by the present application utilizes the actuating rod to perform circumferential rotation relative to the positioning base and the movable base, so that the distance between the positioning base and the movable base coaxially assembled on the actuating rod changes, thereby controlling the rotation of the clamping arm relative to the movable base. This technical solution can achieve the technical effect of accurately controlling the rotation amplitude of the clamping arm, thereby providing high-precision clamping force, and can be suitable for clamping human tissues of different thicknesses.

[0024] Furthermore, by cooperating with the auxiliary support member and the clamping device so that the preset part of the human tissue is clamped between the two, the human tissue can be prevented from being torn, thereby improving the safety of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the embodiments of the present application. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0026] Figure 1A and Figure 1B It is a three-dimensional schematic diagram of the unfolded state and the clamped state of the clamping device of the first embodiment of the present application;

[0027] Figure 2A and Figure 2B For Figure 1A and Figure 1B A side cross-sectional view of

[0028] Figure 3 A schematic diagram showing the exploded structure of the clamping device according to the first embodiment of the present application;

[0029] Figure 4A and Figure 4B For Figure 1A and Figure 1B Side view of

[0030] FIG. 5A to FIG. 5C Schematic diagrams showing different embodiments of the clamping assembly of the present application;

[0031] Fig. 6A and Figure 6B A schematic diagram showing an application example of the clamping assembly of the present application;

[0032] 7A to 9B They are schematic diagrams showing different embodiments of the clamping device connected to the conveying device of the present application.

[0033] Component number

[0034] 1: Clamping device; 11: Positioning base; 110: First penetration channel; 12: Moving base; 120: Second penetration channel; 121: Second adjusting unit; 13, 13A, 13B: Clamping arm; 14, 14A, 14B: Linking arm; 15: Actuating rod; 151: First adjusting unit; 16: Limiting structure; 16A, 16B: Limiting unit; 161A: First deployment limiting surface; 162A: First clamping limiting surface; 161B: Second deployment limiting surface; 162B: Second clamping limiting surface; 17: Positioning structure; 17A: Retaining spring; 17B: Anti-loosening gasket; 2: Clamping assembly; 3: Auxiliary support member; 4: Conveying device; 41: Conveying member; 42: Driving member; 5: Human tissue; 51: Preset position; 511: First side; 512: Second side. DETAILED DESCRIPTION

[0035] In order to enable those skilled in the art to better understand the technical solutions in the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the embodiments of the present application should fall within the scope of protection of the embodiments of the present application.

[0036] In this specification, the so-called "distal end" refers to the end of the clamping device (actuating rod) away from the operator, and the so-called "proximal end" refers to the end of the clamping device (actuating rod) close to the operator.

[0037] The present application mainly provides a clamping device and a clamping assembly, which can be used to clamp a preset position 51 (reference figure) of human tissue 5. In this embodiment, the human tissue 5 is, for example, a heart valve ring. Specifically, the clamping device 1 provided by the present application belongs to a product design for transcatheter interventional treatment of tricuspid regurgitation. The design is similar to Kay's surgical method. The two ends of the posterior leaflet of the tricuspid valve are sutured together to make the tricuspid valve bicuspid, so that the overall circumference of the leaflet ring is shortened, thereby achieving the purpose of reducing tricuspid regurgitation.

[0038] Please refer to Figure 1A , Figure 1B , Figure 2A , Figure 2B and Figure 3 , which is a schematic diagram showing a clamping device 1 of the first embodiment of the present application. As shown in the figure, the clamping device 1 of the present application mainly includes a positioning base 11, a moving base 12, a plurality of clamping arms 13, a plurality of linkage arms 14, and an actuating rod 15.

[0039] A first penetration channel 110 is formed in the positioning base 11 , and a second penetration channel 120 is formed in the moving base 12 .

[0040] One end of each clamping arm 13 is connected to the mobile base 12, so that each clamping arm 13 can rotate relative to the mobile base 12 to be in an extended position or a clamping position. In this embodiment, the number of clamping arms 13 is at least two. Hereinafter, the two clamping arms 13A and 13B shown in the drawings of the present application will be described, but the invention is not limited thereto. The number of clamping arms 13 can be increased to three or more according to actual use requirements.

[0041] The two ends of each linkage arm 14 are respectively connected to the positioning base 11 and each clamping arm 13, so that each clamping arm 13 is indirectly connected to the positioning base 11. In this embodiment, the number of linkage arms 14 can correspond to the clamping arms 13, that is, linkage arms 14A and 14B as shown in the figure, so that the clamping arms 13A and 13B are indirectly connected to the positioning base 11 through the linkage arms 14A and 14B respectively, so that the clamping arms 13A and 13B can produce a linkage effect as the distance between the positioning base 11 and the moving base 12 changes (please describe in detail later), but it is not limited to this. In other embodiments, the number of linkage arms 14 is greater than the number of clamping arms 13. For example, multiple linkage arms 14 can be set for two clamping arms 13.

[0042] The actuating rod 15 is respectively penetrated in the first penetration channel 110 and the second penetration channel 120 so that the positioning base 11 and the movable base 12 are coaxially assembled on the actuating rod 15. In this embodiment, the positioning base 11 can rotate circumferentially relative to the actuating rod 15 but is fixed axially, and the movable base 12 can rotate circumferentially relative to the actuating rod 15 and can also move axially relative to the actuating rod 15.

[0043] In actual operation, the distance between the moving base 12 and the positioning base 11 coaxially mounted on the actuating rod 15 can be changed by rotating the actuating rod 15 circumferentially, so that the clamping arms 13A, 13b can be rotated relative to the moving base 12 and be in the extended position (such as Figure 1A and Figure 2A as shown) or clamping position (as shown Figure 1B and Figure 2B When the clamping arms 13A and 13B are at their respective unfolded positions relative to the mobile base 12, they can be positioned at the preset positions 51 of the human tissue 5; and when the clamping arms 13A and 13B are at their respective clamping positions relative to the mobile base 12, the preset position 51 of the human tissue 2 can be clamped between the clamping arms 13A and 13B by the cooperation between the clamping arms 13A and 13B (refer to Fig. 6A and Figure 6B ).

[0044] In this embodiment, when the actuating rod 15 rotates circumferentially in a first direction (e.g., clockwise), the positioning base 11 and the moving base 12 rotate circumferentially relative to the actuating rod 15 at the same time, so that when the actuating rod 15 rotates circumferentially, the positioning base 11 and the moving base 12 always remain circumferentially fixed, and in this state, the positioning base 11 is axially fixed relative to the actuating rod 15, while the moving base 12 moves axially upward relative to the actuating rod 15 (i.e., moves in a direction close to the positioning base 11), so that the distance between the moving base 12 and the positioning base 11 coaxially assembled on the actuating rod 15 is gradually reduced. In this state, the clamping arms 13A and 13B will be relative to the moving base 12 by Figure 1A and Figure 2A The unfolded position shown is gradually rotated to Figure 1B and Figure 2B On the contrary, when the actuating rod 15 rotates circumferentially in a second direction opposite to the first direction (e.g., counterclockwise), the positioning base 11 is axially fixed relative to the actuating rod 15, and the moving base 12 moves axially downward relative to the actuating rod 15 (i.e., moves in a direction away from the positioning base 11), so that the distance between the moving base 12 and the positioning base 11 coaxially assembled on the actuating rod 15 gradually increases. In this state, the clamping arms 13A and 13B will be relative to the moving base 12 by Figure 1B and Figure 2B The clamping position shown is gradually rotated to Figure 1A and Figure 2A Expanded position shown.

[0045] In one embodiment, the movable base 12 is disposed closer to the distal end of the actuating rod 15 than the positioning base 11. Figure 2A and Figure 2B In the figure shown, the movable base 12 is arranged below the positioning base 11. The advantage of this structural design is that the accommodation space formed between the clamping arms 13A and 13B is not interfered with, so as to improve the clamping effect on the human tissue and avoid affecting the human tissue clamped between the clamping arms 13A and 13B. However, this is not limited to the above. Depending on the actual use requirements, the positioning base 11 can be arranged at a position closer to the distal end of the actuating rod 15, that is, at Figure 2A and Figure 2B In the illustrated diagram, the positioning base 11 is disposed below the moving base 12 , so that the positioning base 11 is accommodated in an accommodation space formed between the clamping arms 13A, 13B.

[0046] In another embodiment, when the setting position of the mobile base 12 is closer to the distal end of the actuating rod 15 than the setting position of the positioning base 11, a first adjustment unit 151 is further provided at the position of the actuating rod 15 corresponding to the setting of the mobile base, and a second adjustment unit 121 is provided on the mobile base 12, wherein the first adjustment unit 151 and the second adjustment unit 121 are structurally adapted to provide the mobile base 12 with axial movement while performing circumferential rotation relative to the actuating rod 15. In this embodiment, the first adjustment unit 151 is, for example, an external thread formed on the actuating rod 15, and the second adjustment unit 121 is, for example, an internal thread formed in the second through-channel 120 of the mobile base 12. The advantage of the above structural design is that the rotation amplitude of the clamping arms 13A, 13B can be precisely adjusted by finely controlling the amplitude of the circumferential rotation of the actuating rod 15, thereby providing a high-precision clamping force between the clamping arms 13A, 13B.

[0047] In another embodiment, the clamping device 1 further includes a limit structure 16, which is used to define the maximum range of axial movement of the movable base 12 relative to the actuating rod 15. Figure 4A and Figure 4BAs shown, in this embodiment, the limiting structure 16 is a limiting unit 16A, 16B respectively arranged at the proximal end of the clamping arms 13A, 13B (i.e., one end of the clamping arms 13A, 13B for connecting to the mobile base 12). As shown in the figure, the limiting unit 16A arranged at the proximal end of the clamping arm 13A has a first expansion limiting surface 161A and a first clamping limiting surface 162A, and the limiting unit 16B arranged at the proximal end of the clamping arm 13B has a second expansion limiting surface 161B and a second clamping limiting surface 162B, wherein the first expansion limiting surface 161A and the second expansion limiting surface 161B cooperate to limit the maximum expansion range between the clamping arms 13A and 13B (such as Figure 4A The first clamping limit surface 162A and the second clamping limit surface 162B cooperate with each other to limit the minimum contraction amplitude between the clamping arms 13A and 13B (as shown in FIG. Figure 4B It should be noted that the design of the limiting mechanism 16 is not limited to the above, and other structures can also be applicable to the present application.

[0048] In addition, in another embodiment, the clamping device 1 further includes a positioning structure 17, which is disposed between the actuating rod 15 and the positioning base 11, and is used to limit the axial movement of the actuating rod 15 relative to the positioning base 11 when the actuating rod 15 rotates circumferentially. Figure 3 As shown, in this embodiment, the positioning mechanism 17 includes a retaining spring 17A and an anti-loosening washer 17B which are sleeved on the actuating rod 15 and located on opposite sides of the positioning base 11, wherein the retaining spring 17A is used to limit the axial movement of the positioning base 11 relative to the actuating rod 15 toward the proximal end of the actuating rod 15, and the anti-loosening washer 17B is used to limit the axial movement of the positioning base 11 relative to the actuating rod 15 toward the distal end of the actuating rod 15. It should be noted that the design of the positioning structure 17 is not limited to the retaining spring 17A and the anti-loosening washer 17B, and can also be implemented by other components or structural designs.

[0049] In addition, in actual operation, the clamping device 1 can be connected to the external conveying device 4 to apply a force through the conveying device 4 to drive the clamping arms 13A and 13B of the clamping device 1 to perform an actuation. In this embodiment, the conveying device 4 mainly includes a conveying member 41 and a driving member 42, wherein the conveying member 41 is connected to the positioning base 11 of the clamping device 1 to limit the circumferential rotation of the positioning base 11, and the driving member 42 is connected to the actuating rod 15 of the clamping device 1 to apply an actuating force to the actuating rod 15 to drive the actuating rod 15 to perform circumferential rotation along a first direction (e.g., clockwise direction) or a second direction (e.g., counterclockwise direction).

[0050] In the present application, there are many ways to connect the conveying device 4 and the clamping device 1, for example, Fig. 7A and Figure 7BAs shown, in this embodiment, the conveying member 41 and the driving member 42 can be connected to the positioning base 11 and the actuating rod 15 at the proximal end of the actuating rod 15, respectively. Fig. 8A and Figure 8B As shown, in another embodiment, the conveying member 41 and the driving member 42 of the conveying device 4 can also be connected to the positioning base 11 and the actuating rod 15 at the distal end of the actuating rod 15, respectively. Fig.9A and Fig. 9B As shown, in another embodiment, the conveying member 41 and the driving member 42 of the conveying device 4 can also be connected to the positioning base 11 and the actuating rod 15 at the opposite ends of the actuating rod 15, respectively. For example, the conveying member 41 is connected to the positioning base 11 at the proximal end of the actuating rod 15, and the driving member 42 is connected to the actuating rod 15 at the distal end of the actuating rod 15.

[0051] In addition, the present application also provides a clamping device of the second embodiment, which is mainly different from the clamping device 1 of the first embodiment described above in that the connection arrangement of the clamping arm and the linkage arm is exactly opposite to that of the first embodiment, that is, one end of each clamping arm is respectively connected to the positioning base, and the two ends of each linkage arm are respectively connected to the mobile base and each clamping arm, so that each clamping arm is indirectly connected to the mobile base through each linkage arm, so that each clamping arm is linked with the change of the distance between the mobile base and the positioning base so as to rotate relative to the mobile base. In addition, the other structural design principles of this embodiment are similar to those of the clamping device 1 described in the first embodiment described above, and will not be repeated here.

[0052] Please continue reading FIG. 5A to FIG. 5C as well as Fig. 6A and Figure 6B Another embodiment of the present application further provides a clamping assembly 2, which includes an auxiliary support member 3 and a clamping device 1, wherein the auxiliary support member 3 is used to provide auxiliary support to a preset portion 51 of a human tissue 5 (human valve annulus) so that the preset portion 51 of the human tissue 5 is in a convex state. The clamping device 1 is used to clamp the preset portion 51 in a convex state and the auxiliary support member 3. In this embodiment, the main structure of the clamping device 1 is as described in detail in the above embodiments, and will not be repeated here.

[0053] In this embodiment, the auxiliary support member 3 can be implemented in various implementation styles. Specifically, the auxiliary support member 3 can be, for example, a top bead structure ( Figure 5A ), or for example a self-tapping spring wire structure (such as Figure 5B As shown), or a stretched mesh structure (as shown Figure 5C shown).

[0054] Please continue to refer to Fig. 6A and Figure 6BIn this embodiment, the auxiliary support member 3 is taken as a pulling net structure as an example, wherein the preset part 51 of the human tissue 5 includes a first side 511 and a second side 512 arranged opposite to each other. As shown in the figure, the auxiliary support member 3 is used to abut the preset part 51 at the first side 511 of the preset part 51, and the clamping device 1 is used to clamp the preset part 51 in a convex state and the auxiliary support member 3 at the second side 512 of the preset part 51, so that the preset part 51 is clamped between the auxiliary support member 3 and the clamping device 1, thereby forming a sandwich-like clamping state, thereby effectively preventing the human tissue 5 from being torn, and at the same time, the clamping fixation effect can be improved.

[0055] In summary, the clamping device and clamping assembly provided in the present application are suitable for treating tricuspid regurgitation through minimally invasive methods, and have the advantages of simple structure, firm clamping, not easy to slip, and preventing human tissue from being torn.

[0056] Furthermore, by utilizing the technical principle of using an actuator rod to rotate circumferentially relative to a positioning base and a movable base so as to change the distance between the positioning base and the movable base and drive the clamping arm to rotate, human tissue can be clamped. This can achieve the technical effect of precisely controlling the rotation range of the clamping arm, thereby providing a highly precise clamping force.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A clamping device used in conjunction with a conveying device, characterized in that: The clamping device is delivered to the heart valve through the delivery device via the human catheter and clamps the heart valve ring of the human tissue. The clamping device includes: A positioning base having a first penetration channel; A mobile base having a second penetration passage; At least two clamping arms, one end of each clamping arm is connected to the movable base respectively; At least two connecting arms, two ends of each connecting arm are respectively connected to the positioning base and each clamping arm; and an actuating rod, which is respectively inserted into the first insertion channel and the second insertion channel, and the actuating rod is threadedly connected to the moving base; When the clamping device is placed on the delivery device and delivered to the heart valve through a human catheter, the actuating rod is subjected to an external force and rotates circumferentially along a first direction, the distance between the movable base and the positioning base is shortened, and at least a portion of the actuating rod moves from one end of the movable base to the other end through the second penetration channel, and each of the linkage arms drives each of the clamping arms to rotate inward relative to the movable base to clamp the heart valve ring of the human tissue.

2. The clamping device according to claim 1, characterized in that: When the actuating rod rotates circumferentially along a first direction, the distance between the mobile base and the positioning base gradually decreases, so that each of the clamping arms rotates relative to the mobile base and gradually rotates from the deployed position to the clamping position; when the actuating rod rotates circumferentially along a second direction opposite to the first direction, the distance between the mobile base and the positioning base gradually increases, so that each of the clamping arms rotates relative to the mobile base and gradually rotates from the clamping position to the deployed position.

3. The clamping device according to claim 2, characterized in that: The setting position of the moving base is closer to the distal end of the actuating rod than the setting position of the positioning base.

4. The clamping device according to claim 1, characterized in that: A first adjusting unit is also provided at a position on the actuating rod corresponding to the movable base, and a second adjusting unit is provided on the movable base, wherein the first adjusting unit and the second adjusting unit are structurally adapted to provide the movable base with circumferential rotation and axial movement relative to the actuating rod.

5. The clamping device according to claim 4, characterized in that: The first adjusting unit is an external thread formed on the actuating rod, and the second adjusting unit is an internal thread formed in the second penetration channel of the moving base.

6. The clamping device according to claim 1, characterized in that: The clamping device further comprises a limiting structure, which is used to define a maximum movement range of the movable base for axial movement relative to the actuating rod.

7. The clamping device according to claim 6, characterized in that: Each of the clamping arms further comprises a clamping arm proximal end connected to the movable base, and the limiting structure is disposed at the proximal end of each of the clamping arms.

8. The clamping device according to claim 1, characterized in that: The clamping device further comprises a positioning structure, which is arranged between the actuating rod and the positioning base and is used for limiting the axial movement of the actuating rod relative to the positioning base when the actuating rod rotates circumferentially.

9. The clamping device according to claim 1, characterized in that: The clamping device can also be connected to an external conveying device, and the conveying device has: A conveying member connected to the positioning base of the clamping device and used to limit the circumferential rotation of the positioning base; as well as A driving member is connected to the actuating rod of the clamping device and is used to drive the actuating rod to rotate circumferentially.

10. The clamping device according to claim 9, characterized in that: The conveying member and the driving member are respectively connected to the positioning base and the actuating rod at the proximal end of the actuating rod, or the conveying member and the driving member are respectively connected to the positioning base and the actuating rod at the distal end of the actuating rod, or the conveying member and the driving member are respectively connected to the positioning base and the actuating rod at both ends of the actuating rod.

11. A clamping device used in conjunction with a conveying device, characterized in that: The clamping device is delivered to the heart valve through the delivery device via the human catheter and clamps the heart valve ring of the human tissue. The clamping device includes: A positioning base having a first penetration channel; A mobile base having a second penetration passage; At least two clamping arms, one end of each clamping arm is connected to the positioning base respectively; At least two connecting arms, two ends of each connecting arm are respectively connected to the moving base and each clamping arm; and an actuating rod, which is respectively inserted into the first insertion channel and the second insertion channel, and the actuating rod is threadedly connected to the moving base; When the clamping device is placed on the delivery device and delivered to the heart valve through a human catheter, the actuating rod is subjected to an external force and rotates circumferentially along a first direction, the distance between the movable base and the positioning base is shortened, and at least a portion of the actuating rod moves from one end of the movable base to the other end through the second penetration channel, and each of the linkage arms drives each of the clamping arms to rotate inward relative to the movable base to clamp the heart valve ring of the human tissue.

12. The clamping device according to claim 11, characterized in that: The positioning base is disposed at a position closer to the distal end of the actuating rod than the moving base.

13. The clamping device according to claim 11, characterized in that: The clamping device can also be connected to an external conveying device, and the conveying device has: A conveying member connected to the movable base of the clamping device and used to limit the circumferential rotation of the movable base; as well as A driving member is connected to the actuating rod of the clamping device and is used to drive the actuating rod to rotate circumferentially.

14. A clamping assembly for clamping a preset part of human tissue, characterized in that: include: An auxiliary support member, used for providing auxiliary support inside the human tissue, so that the preset part of the human tissue is in a convex state; as well as The clamping device according to any one of claims 1 to 13 is used to clamp the preset portion in a convex state and the auxiliary support member.

15. The clamping assembly according to claim 14, characterized in that The preset position includes a first side and a second side that are relatively arranged, wherein the auxiliary support member abuts against the preset position on the first side of the preset position, and the clamping device clamps the preset position and the auxiliary support member on the second side of the preset position, so that the preset position is clamped between the auxiliary support member and the clamping device.

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