Mitral valve and aortic valve double replacement structure
By designing the dual replacement structure of the mitral valve and the aortic valve, stable fixation is achieved using the waist annular groove and connector, and combining the elastic clamp and rivet rod, the problem of double valve replacement is solved, reducing the difficulty of surgery and improving the structure stability.
Patent Information
- Application Number
- CN202323344082.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-08
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2033-12-08
AI Technical Summary
Patients with mitral valve and aortic valve combined with valve lesions are difficult to tolerate surgical operations, and the prior art is difficult to achieve stable fixation and synchronous implantation of double valve replacement, resulting in high difficulty in surgery.
A dual replacement structure including a mitral valve bracket, an aortic valve bracket and a connector is designed to accommodate the mitral valve through the waist annular groove to achieve fit with the inner wall of the heart, and the mitral valve and main implantation are synchronized through the connector. The arterial valve holder is fixed with elastic clamps, expansion rings and rivets to ensure the stability and simplicity of the structure.
The stable fixation and synchronous implantation of the mitral valve and the aortic valve are achieved, which reduces the difficulty of surgery, improves the simplicity of the operation and structural stability, and avoids postoperative valve displacement and damage.
Smart Images
Figure CN222218018U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of valve repair, in particular to a mitral valve and aortic valve double replacement structure. Background Art
[0002] The clinical manifestations of both mitral and aortic valve lesions may vary significantly depending on the combination and severity of the valvular lesions, mainly depending on which of the two valves has relatively more severe lesions. Sometimes the clinical manifestations of the valve with less severe lesions will be masked or alleviated.
[0003] According to the statistical analysis of clinical data of a large number of surgical operations at home and abroad, combined valvular disease accounts for about 11.5% to 28% of heart valve disease surgeries, with an average of about 15%. Among combined valvular diseases, mitral valve and aortic valve dual disease is the most common, accounting for about 48% to 87%. The Structural Heart Disease Center of Zhongnan Hospital of Wuhan University pointed out in the "Effectiveness and feasibility of transcatheter aortic valve replacement in treating combined aortic and mitral regurgitation a retrospective observational study" that about 75% of patients with aortic valve disease have a certain degree of functional mitral regurgitation (functional mitral regurgitation, FMR). Due to the changes in left ventricular structure and function caused by aortic valve disease, mitral ring dilation, abnormal papillary muscle position and function, and poor valve leaflet coaptation, FMR has become a common type of combined valvular disease. Clinically, patients with combined mitral and aortic valve disease have difficulty tolerating surgical operations, which has always been a problem for cardiovascular doctors. Utility Model Content
[0004] The utility model provides a mitral valve and aortic valve double replacement structure to solve the deficiencies of the prior art.
[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0006] A mitral valve and aortic valve dual replacement structure, comprising a mitral valve frame, an aortic valve frame and a connector; the mitral valve frame comprises a first trumpet portion, a waist portion and a second trumpet portion connected to each other in sequence from one end to the other end, and the mitral valve frame is provided with a first cavity which passes through the first trumpet portion, the waist portion and the second trumpet portion in sequence; along the direction away from the waist, the radial dimensions of the first trumpet portion and the second trumpet portion gradually increase, and an annular groove is formed on the periphery of the waist; the aortic valve frame is located on one side of the mitral valve frame and is provided with a second cavity which passes through both ends thereof; one end of the connector is connected to the mitral valve frame, and the other end of the connector is connected to the aortic valve frame; wherein the mitral valve frame, the aortic valve frame and the connector are all elastically deformable.
[0007] Compared with the prior art, the annular groove around the waist of the utility model can well accommodate the mitral valve, and make the mitral valve frame fit the inner wall of the heart, thereby realizing the stable fixation of the double replacement structure of the mitral valve and the aortic valve; in addition, the mitral valve frame is connected to the aortic valve frame through a connecting piece, thereby realizing the synchronous implantation of the mitral valve frame and the aortic valve frame, solving the problem of double valve replacement placement, and having the advantages of simple operation and easy operation.
[0008] In some embodiments, the mitral valve and aortic valve dual replacement structure also includes an elastic clamp located on the side of the aortic valve frame for pressing the aortic valve onto the aortic valve frame, one end of the clamp is connected to the aortic valve frame, and the other end of the clamp is a free end.
[0009] The clamping member can realize reliable fixation of the aortic valve frame, and prevent the aortic valve frame from shifting in the body after surgery. At the same time, its operation method is relatively simple, which is conducive to reducing the difficulty of surgery. It also has the advantages of simple structure and easy manufacturing.
[0010] In some embodiments, the mitral valve and aortic valve dual replacement structure also includes a first expansion ring and a second expansion ring; the first expansion ring is arranged at one end of the mitral valve frame away from the aortic valve frame, the first expansion ring surrounds the first cavity and can be elastically deformed along its radial direction; the second expansion ring is arranged at one end of the aortic valve frame away from the mitral valve frame, the second expansion ring surrounds the second cavity and can be elastically deformed along its radial direction; the first expansion ring and the second expansion ring are respectively connected to the two ends of the connecting piece.
[0011] The first expansion ring can prevent blood from flowing into the gap between the mitral valve frame and the inner wall of the heart, and the second expansion ring can prevent blood from flowing into the gap between the aortic valve frame and the inner wall of the heart.
[0012] In some embodiments, a portion of the second horn adjacent to the aortic valve frame is missing.
[0013] The missing structure of the second trumpet portion can avoid outflow tract obstruction and facilitate the deployment of the second trumpet portion.
[0014] In some embodiments, the connector forms a space suitable for accommodating the mitral valve or the valve ring at the periphery of the waist, and both ends of the connector form openings for clamping the valve septum between the first horn portion and the aortic valve frame.
[0015] The two ends of the connector respectively clamp the anterior leaflet and the septum of the mitral valve, further realizing the fixation of the dual replacement structure of the mitral valve and the aortic valve. Meanwhile, the space formed by the connector at the periphery of the waist can avoid damaging the left fibrous triangle and the coronary artery during valve replacement.
[0016] In some embodiments, the mitral valve and aortic valve dual replacement structure further includes a rivet rod, and the two sides of the opening of the connector are connected by the rivet rod.
[0017] The provided rivet rods can make the mitral valve and aortic valve double replacement structure as a whole more stably fixed inside the heart.
[0018] In some embodiments, two ends of the rivet rod penetrate through two sides of the opening of the connector and are fixed, one end of the rivet rod is provided with a first fixing cap, and the other end of the rivet rod is provided with a second fixing cap.
[0019] The two ends of the rivet rod are clamped by the first fixing cap and the second fixing cap to avoid bulges in the heart, and can also be used to adjust the clamping force of the clamping piece.
[0020] In some embodiments, the connecting member is in sheet shape and has cutting holes arranged thereon.
[0021] The cutting holes are designed for the rivet rod to pass through, which is convenient for the personalized insertion of the rivet rod and helps to improve the efficiency of endothelialization.
[0022] In some embodiments, both the mitral valve frame and the aortic valve frame are braided and formed by memory alloy wires.
[0023] The braided mitral valve frame and aortic valve frame are easier to shrink and deform, making it easier to accommodate the mitral valve and aortic valve double replacement structure into a catheter.
[0024] In some embodiments, a biocompatible film is attached to both the mitral valve frame and the aortic valve frame.
[0025] The provided biocompatible membrane can better prevent blood from infiltrating into the gap between the mitral valve frame or the aortic valve frame and the inner wall of the heart.
[0026] In some embodiments, the connector is integrated with the mitral valve frame and the aortic valve frame, and a portion of the sidewall of the mitral valve frame and / or the aortic valve frame serves as a part of the connector.
[0027] This embodiment has fewer seams, a simpler manufacturing process, and more excellent structural performance.
[0028] In some embodiments, the connector is fixedly connected to outer walls of the mitral valve frame and the aortic valve frame.
[0029] The connector in this embodiment may have different elastic deformation capabilities from the mitral valve frame and the aortic valve frame to meet different usage requirements. BRIEF DESCRIPTION OF THE DRAWINGS
[0030] In order to more clearly illustrate the embodiments of the utility model 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 of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0031] Figure 1 It is the front view of the embodiment of the utility model.
[0032] Figure 2 It is a schematic diagram of a connecting piece and a rivet rod arranged on the connecting piece in an embodiment of the utility model.
[0033] Figure 3 It is a schematic diagram of the embodiment of the utility model when it is accommodated in a catheter.
[0034] Figure 4 It is a sheet-shaped memory metal mesh used for making a connecting piece in the embodiment of the utility model.
[0035] Figure 5a It is a schematic diagram of an embodiment of the utility model being introduced into the heart via a catheter.
[0036] Figure 5b It is a schematic diagram of the embodiment of the utility model when the catheter is gradually withdrawn.
[0037] Figure 6 It is a schematic diagram of an embodiment of the utility model after being implanted into the heart.
[0038] The following are the descriptions of the reference numerals:
[0039] In the figure: 1. mitral valve frame; 101. first horn; 102. waist; 103. second horn; 104. annular groove; 2. aortic valve frame; 3. connector; 301. opening; 302. space; 4. clamping member; 5. first expansion ring; 6. second expansion ring; 7. rivet rod; 8. first fixing cap; 9. second fixing cap; 10. catheter; 11. mitral valve; 12. aortic valve. DETAILED DESCRIPTION
[0040] The following is a further detailed description of the implementation methods of the present application in conjunction with the accompanying drawings and examples. The detailed descriptions of the following examples and the accompanying drawings are used to exemplarily illustrate the principles of the present application, but cannot be used to limit the scope of the present application. The present application can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.
[0041] The present application provides these embodiments to make the present application thorough and complete, and to fully express the scope of the present application to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the parts and steps, the composition of the materials, the numerical expressions and the numerical values set forth in these embodiments should be interpreted as being merely exemplary, and not as limiting.
[0042] It should be noted that, in the description of this application, unless otherwise specified, the meaning of "multiple" is greater than or equal to two; the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating the orientation or positional relationship, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.
[0043] In addition, the words "first", "second" and similar words used in this application do not indicate any order, quantity or importance, but are only used to distinguish different parts. "Vertical" does not mean vertical in the strict sense, but is within the tolerance range. "Parallel" does not mean parallel in the strict sense, but is within the tolerance range. "Include" or "comprising" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements.
[0044] It should also be noted that in the description of this application, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances. When a specific device is described as being located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device.
[0045] All terms used in this application have the same meaning as those understood by those of ordinary skill in the art to which this application belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries, such as general dictionaries, should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined herein.
[0046] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.
[0047] See also Figure 1-Figure 6 As shown, the utility model provides a mitral valve and aortic valve dual replacement structure, which includes a mitral valve frame 1, an aortic valve frame 2 and a connector 3.
[0048] like Figure 1 As shown, the shape of the mitral valve frame 1 is approximately hourglass-shaped, and the mitral valve frame 1 includes a first trumpet portion 101, a waist portion 102 and a second trumpet portion 103 which are connected to each other from the upper end to the lower end. The mitral valve frame 1 is provided with a first cavity which passes through the first trumpet portion 101, the waist portion 102 and the second trumpet portion 103 in sequence; along the direction away from the waist 102, the radial dimensions of the first trumpet portion 101 and the second trumpet portion 103 gradually increase, so that an annular groove 104 for accommodating and fixing the mitral valve 11 or the valve ring is formed on the periphery of the waist 102.
[0049] The aortic valve frame 2 is located on the left side of the mitral valve frame 1, and a second cavity is provided on the aortic valve frame 2 that runs through both ends. The right end of the connector 3 is connected to the mitral valve frame 1, and the left end of the connector 3 is connected to the aortic valve frame 2. The mitral valve frame 1, the aortic valve frame 2 and the connector 3 can all be elastically deformed. Under the action of external force, the mitral valve frame 1, the aortic valve frame 2 and the connector 3 can be compressed to Figure 3 The shape shown is to facilitate the storage of the mitral valve and aortic valve dual replacement structure in the catheter 10; Figure 6 As shown, after the mitral valve and aortic valve dual replacement structure is delivered to the target position of the human body through the catheter 10, the catheter 10 is slowly withdrawn, and the mitral valve frame 1, the aortic valve frame 2 and the connector 3 are restored to the state before being compressed.
[0050] like Figure 1 As shown, the mitral valve and aortic valve dual replacement structure also includes an elastic clamp 4 located on the side of the aortic valve frame 2 for pressing the aortic valve to the aortic valve frame 2, one end of the clamp 4 is connected to the aortic valve frame 2, and the other end of the clamp 4 is a free end. The clamps 4 are equidistantly distributed around the aortic valve frame 2, and a gap is formed between the clamp 4 and the outer wall of the aortic valve frame 2 for accommodating the aortic valve 12. Figure 6As shown, when the mitral valve and aortic valve dual replacement structure is implanted in the target position in the human body, the aortic valve 12 is clamped between the clamp 4 and the aortic valve frame 2, thereby achieving the positioning and installation of the aortic valve frame 2. The clamp 4 can be made of a memory alloy, which has its own elasticity to facilitate clamping the aortic valve 12. The set clamp 4 can achieve reliable fixation of the aortic valve frame 2 to avoid displacement of the aortic valve frame 2 in the body after surgery. At the same time, its operation method is also relatively simple, which is conducive to reducing the difficulty of the operation. It also has the advantages of simple structure and easy manufacturing. When the mitral valve and aortic valve dual replacement structure is received in the catheter 10, the clamp 4 is folded in the opposite direction to Figure 3 The form shown.
[0051] like Figure 1 As shown, the mitral valve and aortic valve dual replacement structure further includes a first expansion ring 5, which is arranged at one end of the mitral valve frame 1 away from the aortic valve frame 2 (i.e. Figure 1 The first expansion ring 5 surrounds the first cavity and can be elastically deformed in the radial direction. The first expansion ring 5 has a strong anti-deformation ability relative to the mitral valve frame 1. Figure 6 As shown, after the mitral valve frame 1 and the first expansion ring 5 are deployed in vivo, the first expansion ring 5 abuts against the inner wall of the heart to prevent blood from flowing into the gap between the mitral valve frame 1 and the inner wall of the heart.
[0052] See again Figure 1 The mitral valve and aortic valve dual replacement structure further includes a second expansion ring 6, which is arranged at one end of the aortic valve frame 2 away from the mitral valve frame 1 (i.e. Figure 1 The second expansion ring 6 surrounds the second cavity and can be elastically deformed in the radial direction. The second expansion ring 6 has a strong anti-deformation ability relative to the aortic valve frame 2. Figure 6 As shown, after the aortic valve frame 2 and the second expansion ring 6 are deployed in vivo, the second expansion ring 6 abuts against the inner wall of the heart to prevent blood from flowing into the gap between the aortic valve frame 2 and the inner wall of the heart.
[0053] In some embodiments, the first expansion ring 5 and the second expansion ring 6 are respectively connected to the two ends of the connector 3, so that the first expansion ring 5 and the second expansion ring 6 are respectively located at the two ends of the connector 3. This can prevent the first expansion ring 5 / the second expansion ring 6 from overlapping with the mitral valve frame 1 / the aortic valve frame 2 after the mitral valve and aortic valve double replacement structure is received in the catheter 10, so that the mitral valve and aortic valve double replacement structure has a smaller radial dimension in the contracted state, so as to facilitate the receipt of the mitral valve and aortic valve double replacement structure in the catheter 10.
[0054] like Figure 3As shown, when the mitral valve and aortic valve dual replacement structure is received in the catheter 10, the connector 3 is unfolded into a straight shape, and this shape of the connector 3 can be more easily received in the catheter 10. At the same time, the mitral valve and aortic valve dual replacement structure has a smaller radial dimension when in the catheter 10, which is convenient for surgical operation.
[0055] In some embodiments, the second horn portion 103 is missing near the aortic valve frame 2. Figure 1 As shown in FIG. 1 , the left side portion of the second horn portion 103 is missing. Such a structural design can avoid outflow tract obstruction and facilitate the second horn portion 103 to be removed from the Figure 3 The displayed status expands to Figure 1 Status shown.
[0056] In the present invention, the connecting member 3 forms a space 302 suitable for accommodating the mitral valve 11 or the valve ring at the periphery of the waist 102, and the two ends of the connecting member 3 form an opening 301 for clamping the valve septum between the first trumpet part 101 and the aortic valve frame 2. Figure 6 As shown, when the mitral valve and aortic valve dual replacement structure is implanted in the human body, the valve septum is located in the opening 301 between the head and tail ends of the connector 3, and the two ends of the connector 3 respectively clamp the front valve and the valve septum of the mitral valve 11, thereby further fixing the mitral valve and aortic valve dual replacement structure. At the same time, the space 302 formed by the connector 3 at the periphery of the waist 102 can avoid damaging the left fiber triangle and the coronary artery during valve replacement.
[0057] In the utility model, both the mitral valve frame 1 and the aortic valve frame 2 can be elastically deformed along their own radial direction. In specific implementation, the mitral valve frame 1 and the aortic valve frame 2 can be woven from memory alloy wires. The woven mitral valve frame 1 and the aortic valve frame 2 are easier to shrink and deform, and the mitral valve frame 1 and the aortic valve frame 2 have smaller radial dimensions after shrinking along their own radial direction, which is convenient for accommodating the mitral valve and aortic valve double replacement structure into the catheter 10, and is also conducive to further reducing the difficulty of the operation. In order to better prevent blood from infusing into the gap between the mitral valve frame 1 or the aortic valve frame 2 and the inner wall of the heart, a biocompatible membrane can be arranged on the surface of the mitral valve frame 1 and the aortic valve frame 2. The biocompatible membrane can be a braided membrane or fiber membrane with good biocompatibility such as PET or PTFE, or a processed animal pericardium can be selected.
[0058] In some embodiments, the mitral valve and aortic valve dual replacement structure further includes a rivet rod 7, and the two sides of the opening of the connector 3 are connected by the rivet rod 7. The connector 3 is sheet-shaped and has cutting holes evenly distributed thereon. The arranged cutting holes can allow the rivet rod 7 to pass through, which is convenient for personalized insertion of the rivet rod 7 and is also conducive to improving the endothelialization efficiency. Figure 4As shown, in a specific implementation, the connector 3 can be formed by a sheet-like memory metal mesh so that the connector 3 has sufficient elasticity. The grid on the memory metal mesh can be used as the aforementioned cutting hole. The connector 3 formed by the sheet-like memory metal mesh is fixedly connected to the outer wall of the mitral valve frame 1 and the aortic valve frame 2 by welding. The connector 3 made in this way can have different elastic deformation capabilities from the mitral valve frame 1 and the aortic valve frame 2 to meet different usage requirements. Figure 6 As shown, after the mitral valve frame 1 and the aortic valve frame 2 are implanted in the target position, the rivet rod 7 is inserted between the head and tail ends of the connector 3. The rivet rod 7 can make the mitral valve and aortic valve double replacement structure as a whole more stably fixed inside the heart. As an optional embodiment, the rivet rod 7 in the utility model can also be a fixing spike.
[0059] In order to realize the connection between the rivet rod 7 and the connecting member 3, the two ends of the rivet rod 7 penetrate the two sides of the opening of the connecting member 3 and are fixed, and a first fixing cap 8 is provided at one end of the rivet rod 7, and a second fixing cap 9 is provided at the other end of the rivet rod 7. The two ends of the rivet rod 7 are clamped by the first fixing cap 8 and the second fixing cap 9 to avoid bulges in the heart, and can also be used to adjust the clamping force of the clamp 4. One of the first fixing cap 8 and the second fixing cap 9 can also be pre-fixed on the connecting member 3, thereby reducing the time of the operation.
[0060] In some embodiments, the connector 3 is integrated with the mitral valve frame 1 and the aortic valve frame 2, and part of the side wall of the mitral valve frame 1 and / or the aortic valve frame 2 is used as part of the connector 3. The connector 3 in this embodiment is not suitable for being formed by the aforementioned sheet-like memory metal mesh. The mitral valve frame 1, the aortic valve frame 2 and the connector 3 in this embodiment can be made by cutting a memory alloy mesh tube. The mitral valve and aortic valve double replacement structure made in this way has fewer seams, a simpler manufacturing process, and more excellent structural performance.
[0061] Combination Figure 5a and Figure 5b As shown, Figure 5a and Figure 5b The arrow in the figure represents the movement direction of the catheter 10. The use process of the mitral valve and aortic valve dual replacement structure provided by the present invention is as follows:
[0062] Before the operation, the mitral valve and aortic valve dual replacement structure is compressed and stored in the catheter 10;
[0063] During the operation, the catheter 10 is inserted Figure 5aThe catheter 10 is introduced to pass through the gap between the mitral valve 11 and the aortic valve 12. After confirming that the position is correct, the mitral valve and aortic valve dual replacement structure is supported and the catheter 10 is withdrawn. During the withdrawal process, the clamp 4 is extended outward. At this time, the expansion position of the clamp 4 can be confirmed by imaging to adjust the angle of the mitral valve and aortic valve dual replacement structure, so as to facilitate the subsequent release of the aortic valve frame 2 to expand and form a clamp on the aortic valve 12 with the clamp 4. The withdrawal is continued to allow the aortic valve frame 2 to be fully expanded. The expansion of the aortic valve frame 2 is completed and attached to the inner wall of the heart. The connector 3 is attached to the front valve and valve septum of the mitral valve 11. The catheter 10 is continued to be withdrawn to allow the second trumpet portion 103 to be expanded and attached to the inner wall of the heart. The mitral valve and aortic valve dual replacement structure is slightly pulled back so that the mitral valve 11 and / or the valve ring can be smoothly received in the annular groove 104. The first trumpet portion 101 is continued to be withdrawn and expanded so that the connector 3 forms a complete clamp.
[0064] The annular groove 104 around the waist portion 102 of the utility model can well accommodate the mitral valve 11, and make the mitral valve frame 1 fit against the inner wall of the heart, thereby realizing stable fixation of the dual replacement structure of the mitral valve and the aortic valve; in addition, the mitral valve frame 1 is connected to the aortic valve frame 2 through the connector 3, thereby realizing the synchronous implantation of the mitral valve frame 1 and the aortic valve frame 2, thus solving the problem of placing the dual valve replacement, and having the advantages of simple operation and convenient operation.
[0065] So far, various embodiments of the present application have been described in detail. In order to avoid obscuring the concept of the present application, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed herein.
[0066] Although some specific embodiments of the present application have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present application. It should be understood by those skilled in the art that the above embodiments may be modified or some technical features may be replaced by equivalents without departing from the scope and spirit of the present application. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict.
Claims
1. A mitral valve and aortic valve dual replacement structure, characterized in that: include: A mitral valve frame, the mitral valve frame including, from one end to the other end, a first trumpet portion, a waist portion, and a second trumpet portion connected to each other in sequence, the mitral valve frame being provided with a first cavity that passes through the first trumpet portion, the waist portion, and the second trumpet portion in sequence; radial dimensions of the first trumpet portion and the second trumpet portion gradually increase in a direction away from the waist portion, and an annular groove is formed on the periphery of the waist portion; an aortic valve frame, the aortic valve frame being located on one side of the mitral valve frame and having a second cavity penetrating through both ends thereof; as well as A connector, one end of which is connected to the mitral valve frame, and the other end of which is connected to the aortic valve frame; Wherein, the mitral valve frame, the aortic valve frame and the connecting piece can all be elastically deformed.
2. The mitral valve and aortic valve dual replacement structure according to claim 1, characterized in that: It also includes an elastic clamp located on the side of the aortic valve frame for pressing the aortic valve onto the aortic valve frame, one end of the clamp is connected to the aortic valve frame, and the other end of the clamp is a free end.
3. The mitral valve and aortic valve dual replacement structure according to claim 1, characterized in that: It also includes a first expansion ring and a second expansion ring; the first expansion ring is arranged at one end of the mitral valve frame away from the aortic valve frame, the first expansion ring surrounds the first cavity and can be elastically deformed along its radial direction; the second expansion ring is arranged at one end of the aortic valve frame away from the mitral valve frame, the second expansion ring surrounds the second cavity and can be elastically deformed along its radial direction; the first expansion ring and the second expansion ring are respectively connected to the two ends of the connecting piece.
4. The mitral valve and aortic valve dual replacement structure according to claim 1, characterized in that: A portion of the second horn portion adjacent to the aortic valve frame is missing.
5. The mitral valve and aortic valve dual replacement structure according to claim 1, characterized in that: The mitral valve frame and the aortic valve frame are both woven and formed by memory alloy wires.
6. The mitral valve and aortic valve dual replacement structure according to claim 5, characterized in that: The mitral valve frame and the aortic valve frame are both attached with biocompatible films.
7. The mitral valve and aortic valve dual replacement structure according to claim 1, characterized in that: The connector forms a space suitable for accommodating the mitral valve or the valve ring at the periphery of the waist, and both ends of the connector form openings for clamping the valve septum between the first trumpet part and the aortic valve frame.
8. The mitral valve and aortic valve dual replacement structure according to claim 7, characterized in that: It also includes a rivet rod, through which the two sides of the opening of the connecting piece are connected.
9. The mitral valve and aortic valve dual replacement structure according to claim 8, characterized in that: Two ends of the rivet rod penetrate through both sides of the opening of the connecting piece and are fixed.
10. The mitral valve and aortic valve dual replacement structure according to claim 9, characterized in that: The connecting piece is in sheet shape and is provided with cutting holes.
11. The mitral valve and aortic valve dual replacement structure according to any one of claims 1 to 10, characterized in that: The connector is integrated with the mitral valve frame and the aortic valve frame, and a portion of the side walls of the mitral valve frame and / or the aortic valve frame serve as a part of the connector.
12. The mitral valve and aortic valve dual replacement structure according to any one of claims 1 to 10, characterized in that: The connecting piece is fixedly connected to the outer walls of the mitral valve frame and the aortic valve frame.