Clamping equipment

Abstract

The present application provides a clamping device, which mainly includes a base that can be positioned at the center of a target, and at least two clamping structures arranged around the base, each of which can be switched between a clamping state and a release state, so as to adjust the spacing distance between target tissues by clamping different target tissues adjacent to the center of the target. In this way, the clamping device of the present application can capture different target tissues separately or simultaneously, so as to increase the capture probability and reduce the capture difficulty.

Description

Technical Field

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

[0002] Heart valve (mitral valve, tricuspid valve) regurgitation is a common heart disease. For example, the tricuspid valve is located at the right atrioventricular orifice. The most common symptom is tricuspid valve regurgitation, that is, blood flow from the right ventricle back into the right atrium during systole, causing the right atrium to expand in height, increase pressure, and obstruction of 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 cause of tricuspid regurgitation (left heart failure, pulmonary hypertension, etc.) is 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, including valve replacement and valve repair.

[0005] In recent years, with the development of science and technology, domestic and foreign equipment manufacturers have developed a number of interventional clamping devices for the treatment of mitral or tricuspid regurgitation. Taking the treatment of mitral regurgitation as an example, the clamping device can be punctured through the femoral vein of the catheter through the atrial septum, and transported from the left atrium down to the vicinity of the mitral valve to clamp and fix the free edges of the anterior and posterior leaflets of the mitral valve. The clamping device can clamp the mitral valve into a double hole, so that the anterior and posterior leaflets can be well aligned at the end of contraction, reducing the phenomenon of regurgitation.

[0006] Currently, most edge-to-edge repair technologies for the mitral valve have the problem of difficulty in capturing the valve leaflets. The clamping parts of the clamping instrument can only capture the valve leaflets on both sides at the same time. For patients with severe mitral regurgitation, incomplete valve closure will result in a longer operation time and it is difficult to capture the valve leaflets.

[0007] How to solve the current problem of great difficulty in leaflet capture and high capture failure rate is the technical problem that this application needs to solve. Summary of the invention

[0008] In view of the above problems, the present application provides a clamping device to overcome the above problems or at least partially solve the above problems.

[0009] An embodiment of the present application provides a clamping device, which includes: a base, which can be positioned at a target center position; and at least two clamping structures, each of which can be arranged on the base and extend in different directions, and can be switched between a clamping state and a released state relative to the base, so as to adjust the spacing distance between each target tissue by clamping different target tissues adjacent to the target center position.

[0010] Optionally, the clamping device includes two clamping structures disposed on opposite sides of the base, for respectively clamping the anterior leaflet of the mitral valve and the posterior leaflet of the mitral valve.

[0011] Optionally, the clamping device includes two clamping structures disposed on the base, which are used to clamp any two valves of the tricuspid valve respectively; or the clamping device includes three clamping structures disposed on the base, which are used to clamp each valve of the tricuspid valve respectively.

[0012] Optionally, each of the clamping structures can be switched between the clamping state and the released state synchronously; or each of the clamping structures can be switched between the clamping state and the released state independently.

[0013] Optionally, the positioning angles of the clamping structures in the clamping state relative to the base may be the same or different.

[0014] Optionally, the clamping structure includes an inner clamping arm and an outer clamping arm; wherein, the inner clamping arm and the outer clamping arm each include a fixed end pivotally connected to the base, and the inner clamping arm and the outer clamping arm can be respectively pivoted relative to the base via the fixed end to allow the clamping structure to switch between a clamping state and a released state.

[0015] Optionally, the inner clamp arm includes an inner arm clamping portion, and the outer clamp arm includes an outer arm clamping portion, and the outer arm clamping portion cooperates with the inner arm clamping portion to clamp or release the target tissue.

[0016] Optionally, the inner clamp arm also includes an inner arm anti-detachment portion provided on the inner arm clamping portion; and / or the outer clamp arm also includes an outer arm anti-detachment portion provided on the outer arm clamping portion; wherein, when the clamping structure is in a clamping state, the inner arm anti-detachment portion and / or the outer arm anti-detachment portion are used to prevent the target tissue from falling off from between the outer arm clamping portion and the inner arm clamping portion.

[0017] Optionally, the inner arm anti-slip portion includes a plurality of barbs provided on the inner arm clamping portion and extending toward the outer arm clamping portion, and the outer arm anti-slip portion includes a plurality of anti-slip grooves formed on the outer arm clamping portion.

[0018] Optionally, the inner arm clamping portion comprises an elastic band, and the outer arm clamping portion comprises an arc-shaped blade.

[0019] Optionally, the inner clamp arm further includes a free end relative to the fixed end, and the free end can be subjected to force to drive the fixed end of the inner clamp arm to pivot relative to the base, so as to adjust the pivot angle of the inner clamp arm relative to the base.

[0020] Optionally, the clamping structure also includes an actuating rod and a linkage rod; wherein the actuating rod is movably arranged on the base, and the opposite sides of the linkage rod are pivotally connected to the outer clamp arm and the actuating rod respectively; and wherein the actuating rod is movable along its axial direction relative to the base to drive the outer clamp arm to pivot relative to the base via the linkage rod, thereby adjusting the pivot angle of the outer clamp arm relative to the base.

[0021] Optionally, the clamping device includes two actuating rods corresponding to the two clamping structures; wherein the two actuating rods include an outer rod and an inner rod that are inserted into the base and are sleeved on each other; wherein the two linkage rods are respectively pivotally connected to the outer rod bottom of the outer rod and the inner rod bottom of the inner rod, and the inner rod bottom is located between the outer rod bottom and the base, and the spacing distance between the outer rod bottom and the base can limit the maximum movement range of the inner rod bottom relative to the base.

[0022] Optionally, the clamping device comprises two actuating rods corresponding to the two clamping structures, and the two actuating rods are respectively penetrated through the base and can slide independently relative to the base.

[0023] Optionally, the clamping structure further comprises a locking structure provided on the base; wherein the locking structure can be switched between a locking position and an unlocking position relative to the base to limit or allow the actuating rod to move relative to the base.

[0024] In summary, the clamping device provided in the embodiment of the present application can improve the probability of capturing the target tissue and reduce the difficulty of capturing by enabling each clamping structure disposed on the base to independently perform the clamping and capturing operation of the target tissue. 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 1 to Figure 2 Side views of different structures of the clamping device of the present application.

[0027] Figure 3 to Figure 4 It is a schematic structural diagram of an embodiment of an actuating rod of the clamping device of the present application.

[0028] Figure 5 This is a schematic structural diagram of another embodiment of the actuating rod of the clamping device of the present application.

[0029] Figure 6 This is a schematic structural diagram of the locking structure of the clamping device of the present application.

[0030] Component number

[0031] 1: Clamping device;

[0032] 2: base;

[0033] 3: Clamping structure;

[0034] 4: Inner clamping arm;

[0035] 402: Fixed end;

[0036] 404: inner arm clamping portion;

[0037] 406: inner arm anti-drop part;

[0038] 408: barbs;

[0039] 410: elastic band;

[0040] 412: free end;

[0041] 5: outer clamp arm;

[0042] 502: fixed end;

[0043] 504: outer arm clamping portion;

[0044] 506: outer arm anti-drop part;

[0045] 508: Anti-slip groove;

[0046] 510: curved blades;

[0047] 512: actuating rod;

[0048] 514: linkage rod;

[0049] 516: outer rod;

[0050] 518: Inner rod;

[0051] 520: bottom of outer rod;

[0052] 522: bottom of inner rod;

[0053] 6: Locking structure. DETAILED DESCRIPTION

[0054] 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.

[0055] The clamping device currently used to treat mitral valve insufficiency can only capture the leaflets on both sides, which leads to the problem of greater difficulty in capturing the leaflets and longer operation time. In view of this, the embodiment of the present application provides a clamping device that can independently perform the clamping operation of each leaflet to improve the above technical problems.

[0056] The specific implementation of the embodiment of the present application will be further explained below in conjunction with the accompanying drawings of the embodiment of the present application.

[0057] The clamping device 1 of this embodiment can be used as an edge-to-edge repair implant in the field of interventional treatment of structural heart disease. It can reach the designated anatomical position through a minimally invasive transvascular approach or through the atrial appendage to achieve repair treatment of the heart valve.

[0058] like Figure 1 and Figure 2 As shown, the clamping device 1 of the present application mainly includes a base 2 and at least two clamping structures 3 .

[0059] In this embodiment, the base 2 can be positioned at the target center position, each clamping structure 3 can be surrounded on the base 2, and can be switched between a clamping state and a release state relative to the base 2, so as to adjust the spacing distance between each target tissue by clamping or releasing each target tissue adjacent to the target center position.

[0060] Optionally, the clamping device 1 may include two clamping structures 3 disposed on opposite sides of the base 2, and the target tissue may include the anterior mitral valve leaflet and the posterior mitral valve leaflet. The anterior mitral valve leaflet and the posterior mitral valve leaflet may be clamped respectively by the two clamping structures 3 of the clamping device 1 to treat the problem of mitral valve insufficiency.

[0061] Optionally, the clipping device 1 may also be used for the treatment of tricuspid regurgitation.

[0062] In one embodiment, the clamping device 1 may include two clamping structures 3 disposed around the base 2, which can be used to clamp any two valves of the tricuspid valve respectively.

[0063] In another embodiment, the clamping device 1 may also include three clamping structures 3 disposed around the base 2 to clamp each valve of the tricuspid valve respectively.

[0064] Optionally, each clamping structure 3 can be switched between the clamping state and the released state synchronously, or each clamping structure 3 can be switched between the clamping state and the released state independently.

[0065] In this embodiment, the positioning angles of the clamping structures 3 in the clamping state relative to the base 2 may be the same or different.

[0066] In this embodiment, the clamping structure 3 may include an inner clamping arm 4 and an outer clamping arm 5 .

[0067] Specifically, the inner clamp arm 4 and the outer clamp arm 5 each include a fixed end 402, 502 pivotally connected to the base 2, and the inner clamp arm 4 and the outer clamp arm 5 can respectively pivot relative to the base 2 via the fixed ends 402, 502, thereby providing the clamping structure 3 with a switchable state between a clamped state and a released state.

[0068] In this embodiment, the inner clamp arm 4 may include an inner arm clamping portion 404, and correspondingly, the outer clamp arm 5 may include an outer arm clamping portion 504, wherein the outer arm clamping portion 504 and the inner arm clamping portion 404 may cooperate with each other to clamp or release the target tissue.

[0069] Optionally, the inner arm clamp portion 404 may include an elastic band 410. The outer arm clamp portion 504 may include an arcuate blade 510.

[0070] Optionally, the inner clamp arm 4 may further include an inner arm anti-slip portion 406 disposed on the inner arm clamping portion 404 .

[0071] Optionally, the outer clamping arm 5 may further include an outer arm anti-slip portion 506 disposed on the outer arm clamping portion 504 .

[0072] When the clamping structure 3 is in the clamping state, the inner arm anti-detachment portion 406 and / or the outer arm anti-detachment portion 506 can be used to prevent the target tissue from falling off from between the outer arm clamping portion 504 and the inner arm clamping portion 404 to ensure that the target tissue is firmly clamped between the outer arm clamping portion 504 and the inner arm clamping portion 404.

[0073] Optionally, the inner arm anti-detachment portion 406 may include a plurality of barbs 408 disposed on the inner arm clamping portion 404 and extending toward the outer arm clamping portion 504 .

[0074] Optionally, the outer arm anti-slip portion 506 includes a plurality of anti-slip grooves 508 formed on the outer arm clamping portion 504 .

[0075] In this embodiment, the inner clamping arm 4 further includes a free end 412 opposite to the fixed end 402 .

[0076] The free end 412 of the inner clamp arm 4 can be subjected to force to drive the fixed end 402 of the inner clamp arm 4 to pivot relative to the base 2 , so as to adjust the pivot angle of the inner clamp arm 4 relative to the base 2 .

[0077] For example, by connecting the free end 414 of the inner clamp arm 4 to a control wire (not shown), the control wire can apply a force to the free end 412 of the inner clamp arm 4 to drive the inner clamp arm 4 to pivot relative to the base 2, so as to achieve the purpose of independently controlling the opening and closing angle of the inner clamp arm 4 relative to the base 2.

[0078] In this embodiment, the clamping structure 3 further includes an actuating rod 512 and a linkage rod 514 .

[0079] The actuating rod 512 is movably disposed on the base 2 , and opposite sides of the linkage rod 514 are pivotally connected to the outer clamping arm 5 and the actuating rod 512 , respectively.

[0080] In this embodiment, the actuating rod 512 can move along its axial direction relative to the base 2 to drive the outer clamp arm 5 to pivot relative to the base 2 via the linkage rod 514, thereby adjusting the pivot angle of the outer clamp arm 5 relative to the base 2 to achieve the purpose of independently controlling the opening and closing angle of the outer clamp arm 5 relative to the base 2.

[0081] Please refer to Figure 3 and Figure 4 In one embodiment, when the clamping device 1 includes two clamping structures 3, the two actuating rods 512 corresponding to the two clamping structures 3 may include an outer rod 516 and an inner rod 518 that are inserted into the base 2 and are sleeved with each other.

[0082] Specifically, the two linkage rods 514 are pivotally connected to the outer rod bottom 520 of the outer rod 516 and the inner rod bottom 522 of the inner rod 518, respectively, and the inner rod bottom 522 is located between the outer rod bottom 520 and the base 2 (that is, the inner rod bottom 522 is closer to the base 2 than the outer rod bottom 520), so as to limit the maximum movement range of the inner rod bottom 522 relative to the base 2 by the spacing distance between the outer rod bottom 520 and the base 2.

[0083] Please refer to Figure 5 In another embodiment, when the clamping device 1 includes two clamping structures 3, two actuating rods corresponding to the two clamping structures 3 can be respectively penetrated in the base 2. For example, the two actuating rods can be penetrated in the base 2 side by side, so as to slide independently relative to the base 2.

[0084] Optionally, the clamping structure 3 may further include a locking structure 6 (see Figure 6 ), wherein the locking structure 6 can be in a locked position relative to the base 2 (for example, Figure 6 The locking structure 6 in the dotted line position) and the unlocked position (e.g. Figure 6 The locking structure 6) is switched between the solid line position to limit or allow the actuating rod 512 to move relative to the base 2.

[0085] In summary, the clamping device of the present application can independently control each clamping structure to perform the clamping operation of the target tissue, which can effectively improve the capture probability of the target tissue and reduce the difficulty of capturing the target tissue.

[0086] 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, characterized in that: include: A base, which can be positioned at the center of the target; as well as At least two clamping structures, each of which is disposed around the base and can be switched between a clamping state and a release state relative to the base, so as to adjust the spacing distance between each of the target tissues by clamping different target tissues adjacent to the target center position; The clamping structure comprises an inner clamping arm and an outer clamping arm; Wherein, the inner clamp arm and the outer clamp arm each include a fixed end pivotally connected to the base, and the inner clamp arm and the outer clamp arm can be respectively pivoted relative to the base via the fixed end, so that the clamping structure can be switched between a clamping state and a released state; The clamping structure further includes an actuating rod and a linkage rod; wherein, The actuating rod is movably disposed on the base, and opposite sides of the linkage rod are respectively pivotally connected to the outer clamping arm and the actuating rod; And wherein the actuating rod can move relative to the base along its axial direction to drive the outer clamping arm to pivot relative to the base via the linkage rod, thereby adjusting the pivoting angle of the outer clamping arm relative to the base; The clamping device comprises two actuating rods corresponding to the two clamping structures; wherein the two actuating rods comprise an outer rod and an inner rod which are inserted into the base and sleeved with each other; wherein, The two linkage rods are pivotally connected to the outer rod bottom of the outer rod and the inner rod bottom of the inner rod respectively, and the inner rod bottom is located between the outer rod bottom and the base, and the spacing distance between the outer rod bottom and the base can limit the maximum movement range of the inner rod bottom relative to the base; The clamping structure further comprises a locking structure provided on the base; The locking structure can be switched between a locking position and an unlocking position relative to the base to restrict or allow the actuating rod to move relative to the base.

2. The clamping device according to claim 1, characterized in that: The clamping device comprises two clamping structures which are arranged on opposite sides of the base and are used for clamping the anterior leaflet of the mitral valve and the posterior leaflet of the mitral valve respectively.

3. The clamping device according to claim 1, characterized in that: The clamping device comprises two clamping structures disposed around the base, and used to clamp any two valves of the tricuspid valve respectively; or The clamping device comprises three clamping structures arranged around the base, which are used to clamp each valve of the tricuspid valve respectively.

4. The clamping device according to claim 1, characterized in that: Each of the clamping structures can be switched synchronously between the clamping state and the releasing state; or Each of the clamping structures can be independently switched between the clamping state and the releasing state.

5. The clamping device according to claim 1, characterized in that: The positioning angles of the clamping structures in the clamping state relative to the base are the same or different.

6. The clamping device according to claim 1, characterized in that: The inner clamp arm comprises an inner arm clamping portion, and the outer clamp arm comprises an outer arm clamping portion, wherein the outer arm clamping portion cooperates with the inner arm clamping portion to clamp or release the target tissue.

7. The clamping device according to claim 6, characterized in that: The inner clamp arm further comprises an inner arm anti-slipping portion provided on the inner arm clamping portion; and / or the outer clamp arm further comprises an outer arm anti-slipping portion provided on the outer arm clamping portion; Wherein, when the clamping structure is in a clamping state, the inner arm anti-detachment portion and / or the outer arm anti-detachment portion are used to prevent the target tissue from falling off from between the outer arm clamping portion and the inner arm clamping portion.

8. The clamping device according to claim 7, characterized in that: The inner arm anti-slip portion includes a plurality of barbs disposed on the inner arm clamping portion and extending toward the outer arm clamping portion, and the outer arm anti-slip portion includes a plurality of anti-slip grooves formed on the outer arm clamping portion.

9. The clamping device according to claim 6, characterized in that: The inner arm clamping portion includes an elastic band, and the outer arm clamping portion includes an arc-shaped blade.

10. The clamping device according to claim 5, characterized in that: The inner clamp arm further comprises a free end relative to the fixed end, and the free end can be subjected to force to drive the fixed end of the inner clamp arm to pivot relative to the base, so as to adjust the pivot angle of the inner clamp arm relative to the base.

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