Mitral valve forming ring

Abstract

The invention provides a mitral valve forming ring, and relates to the technical field of medical instruments, the mitral valve forming ring comprises a support, the support is internally provided with a supporting mechanism, the surface of the support is provided with a forming ring assembly, and the forming ring assembly comprises a forming ring main body; the supporting mechanism comprises a plurality of elastic plates, and the elastic plates are fixedly connected into the support in an annular array mode; the pushing plate is arranged in the support, and the pushing plate is fixedly connected with the elastic plates; and the push rods are arranged on the outer edge of the elastic plate, and the ends, away from the elastic plate, of the push rods are inserted into the forming ring body in a sliding mode. The support and the supporting mechanism are matched, the elastic plate is pressed, so that the support deforms, the forming ring body is driven to synchronously deform, the forming ring body is unfolded more quickly, the mounting efficiency of the forming ring is improved, meanwhile, the inner arc face of the forming ring body is supported through deformation of the support, and the forming ring is more convenient to mount. And the forming ring main body is more stable during installation.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to a mitral annuloplasty ring. Background Art

[0002] Mitral annuloplasty is a cardiac surgery mainly for patients with mitral insufficiency or stenosis. Through techniques such as annuloplasty (such as implanting an artificial annulus), leaflet repair (such as excising diseased tissues and implanting artificial chordae tendineae), or valvuloplasty (such as balloon dilation), it corrects blood reflux or flow obstruction, thereby improving cardiac function and reducing the risk of complications. Its advantages lie in preserving the patient's own valve structure and avoiding the drawback of long-term anticoagulation after valve replacement. It is particularly suitable for patients with degenerative lesions or some congenital malformations. Some cases can be achieved through a minimally invasive interventional approach and is the preferred treatment option for current mitral valve diseases.

[0003] In the prior art, when implanting an artificial mitral annuloplasty ring, first, the annuloplasty ring is sent into the atrium through a delivery system, supported and locked in the atrium, then the annuloplasty ring is guided to the annulus position, and by releasing the internal suture needles and anchor pins, the implants are successively nailed into one side of the annulus, the annulus is tightened, and sewn into the other side to complete the installation of the mitral annuloplasty ring.

[0004] However, the prior art only supports the mitral annuloplasty ring inside the atrium through the delivery system, unable to quickly deploy the mitral annuloplasty ring, lacking a dedicated component for supporting the mitral annuloplasty ring, resulting in low support efficiency of the mitral annuloplasty ring. Also, since the mitral annuloplasty ring is supported by the delivery mechanism after deployment, the stability of the mitral annuloplasty ring during installation is insufficient, prolonging the time of the mitral annuloplasty ring implantation surgery, increasing the surgical risk, and affecting patient satisfaction.

[0005] Therefore, the present invention provides a mitral annuloplasty ring in order to solve at least one of the above problems. Summary of the Invention

[0006] Aiming at the deficiencies of the prior art, the present invention provides a mitral annuloplasty ring, which solves the problem of low support efficiency of the mitral annuloplasty ring in the prior art.

[0007] To achieve the above objectives, the present invention is realized through the following technical solutions:

[0008] The present invention provides a mitral annuloplasty ring, including a stent. A support mechanism is installed inside the stent, and a forming ring assembly is arranged on the surface of the stent. The forming ring assembly includes a forming ring main body; the support mechanism includes:

[0009] A plurality of elastic plates, each elastic plate is fixedly connected in an annular array inside the stent;

[0010] The pushing plate is arranged inside the bracket, and the pushing plate is fixedly connected to each elastic plate;

[0011] A plurality of pushing rods, each pushing rod is arranged on the outer edge of the elastic plate, and one end of each pushing rod away from the elastic plate is slidably inserted into the inside of the forming ring body.

[0012] In a preferred embodiment, the elastic plate is magnetically connected to the pushing rod.

[0013] In one embodiment, the present invention further includes a first fixing mechanism; the first fixing mechanism is used to fix the forming ring body.

[0014] In a preferred embodiment, the first fixing mechanism includes:

[0015] A plurality of receiving grooves, which are arranged in an annular array on the surface of the forming ring body;

[0016] A plurality of implant nails, each implant nail is rotatably connected in a corresponding receiving groove, and each implant nail faces the outside of the forming ring body;

[0017] A plurality of first springs, with both ends of each first spring respectively connected to the corresponding implant nail and the inner wall of the receiving groove.

[0018] One end of the pushing rod that is slidably inserted into the inside of the forming ring body penetrates into the receiving groove and contacts the outer surface of the implant nail.

[0019] In a more preferred embodiment, a clamping mechanism is further included; the clamping mechanism is used to fix the implant nail in the receiving groove.

[0020] In a more preferred embodiment, the clamping mechanism includes:

[0021] A fixing plate, which is fixedly installed inside the receiving groove;

[0022] A clamping groove, which is opened on one side of the fixing plate facing the opening of the receiving groove, and the clamping groove forms an interference fit with the implant nail.

[0023] In one embodiment, a second fixing mechanism is further arranged in the receiving groove, and the second fixing mechanism includes:

[0024] A flipping plate, which is rotatably connected to the inner wall of the receiving groove;

[0025] A protrusion, which is arranged on the side of the flipping plate close to the inner side of the receiving groove;

[0026] A plugging nail, which is arranged on the side of the flipping plate away from the inner side of the receiving groove.

[0027] In one embodiment, the present invention further includes an adjusting mechanism, and the adjusting mechanism includes:

[0028] Multiple frames, each frame is sleeved on the outer surface of the forming ring body in an annular array;

[0029] Multiple second springs, two second springs are fixedly connected in each frame, the two second springs are installed relative to the forming ring body, one end of each of the two second springs is fixedly connected to the inner wall of the frame, and the other end of each abuts against the outer surface of the forming ring body;

[0030] Multiple screws, each screw is threadedly connected to the outer surface of the corresponding frame, and the screw is fixedly connected to one of the gaskets.

[0031] In one embodiment, the support mechanism further includes an elastic ring, and the elastic ring is sleeved on the surface of the bracket.

[0032] In a preferred embodiment, the material of the forming ring body is nitinol shape memory alloy.

[0033] The present invention provides a mitral valve annuloplasty ring. Compared with the prior art, it has the following beneficial effects:

[0034] Through the cooperation of the bracket and the support mechanism, the present invention places the forming ring assembly on the atrial valve annulus, presses the elastic plate, deforms the bracket, drives the synchronous deformation of the forming ring body, enables the forming ring body to expand more quickly, so that the supporting efficiency of the forming ring body is higher, and at the same time, through the deformation of the bracket, the inner arc surface of the forming ring body is supported, making the forming ring body more stable during installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0036] Figure 1 It is a three-dimensional schematic diagram of a mitral valve annuloplasty ring provided by the present application.

[0037] Figure 2 It is a schematic diagram of the position of a first fixing mechanism and an adjusting mechanism provided in an embodiment of the present application.

[0038] Figure 3 It is a schematic diagram of the structure of a first fixing mechanism and an adjusting mechanism provided in an embodiment of the present application.

[0039] Figure 4 It is a schematic diagram of the structure of a clamping mechanism provided in an embodiment of the present application.

[0040] Figure 5Schematic diagram of a second fixing mechanism provided in an embodiment of the present application.

[0041] Figure 6 Stereoscopic schematic diagram of a mitral valve annuloplasty ring provided in an embodiment of the present application.

[0042] In the figure: 1, stent; 2, support mechanism; 3, annuloplasty ring main body; 4, first fixing mechanism; 5, clamping mechanism; 6, second fixing mechanism; 7, adjusting mechanism;

[0043] 21, elastic plate; 22, push plate; 23, push rod; 24, elastic ring; 41, storage groove; 42, implant nail; 43, first spring; 51, fixing plate; 52, clamping groove; 61, flip plate; 62, protrusion; 63, insertion nail; 71, frame; 72, second spring; 73, screw. Detailed implementation manners

[0044] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0045] The embodiment of the present application provides a mitral valve annuloplasty ring, which solves the problem of low efficiency in supporting the mitral valve annuloplasty ring in the prior art, and realizes efficient and rapid support for the mitral valve annuloplasty ring and stable support for the annuloplasty ring during the installation process.

[0046] To better understand the above technical solutions, the above technical solutions will be described in detail below in conjunction with the accompanying drawings of the specification and specific implementation manners.

[0047] Embodiment 1:

[0048] Refer to Figure 1 - Figure 6 As shown, the present invention provides a mitral valve annuloplasty ring, including: a stent 1, a support mechanism 2 is installed inside the stent 1, and an annuloplasty ring assembly is arranged on the surface of the stent 1. The annuloplasty ring assembly includes an annuloplasty ring main body 3; the support mechanism 2 includes: a plurality of elastic plates 21, each elastic plate 21 is fixedly connected to the inside of the stent 1 in an annular array; a push plate 22, the push plate 22 is arranged inside the stent 1, and the push plate 22 is fixedly connected to each elastic plate 21; a plurality of push rods 23, each push rod 23 is arranged at the outer edge of the elastic plate 21, and one end of each push rod 23 away from the elastic plate 21 is slidably inserted into the inside of the annuloplasty ring main body 3.

[0049] It should be noted that: The stent 1 can be in an hourglass shape. The forming ring body 3 is sleeved on the middle part of the stent 1, so that the two sides of the stent 1 abut against the internal tissues of the patient for fixed support; The stent 1 can be made of elastic material or memory metal material, and the forming ring body 3 is fixed by its own deformation, or structures such as pins and buckles are adopted to fix the forming ring body 3; The forming ring assembly and the forming ring body 3 are sleeved on the outer surface of the stent 1 to support the forming ring body 3 during the installation of the forming ring; By pushing the elastic plate 21 to move through the push plate 22, the elastic plate 21 can be made to move in a direction away from the push plate 22, so that the stent 1 deforms, and then the forming ring body 3 outside the stent 1 is pushed to deform and support quickly, improving the speed of forming ring support in the mitral annuloplasty; The push rod 23 can also push the forming ring body 3 under the push of the elastic plate 21, and prevent the forming ring body 3 from rotating relative to the stent 1 and the elastic plate 21, improving the stability during the installation of the forming ring body 3.

[0050] In a preferred embodiment, the elastic plate 21 is magnetically connected to the push rod 23.

[0051] It should be noted that: The magnetic connection between the elastic plate 21 and the push rod 23, such as implanting ferromagnetic material in the elastic plate 21 and making the push rod 23 of ferromagnetic material, etc., can synchronously recover the elastic plate 21 and the push rod 23 when the stent 1 and the support mechanism 2 need to be withdrawn after the forming ring body 3 is fixed, avoiding the influence of the push rod 23 on the valve annulus and the forming ring body 3.

[0052] Embodiment 2:

[0053] See Figure 2 As shown, the present invention provides a mitral valve annuloplasty ring, including all the contents of Embodiment 1. In addition, it further includes a first fixing mechanism 4; The first fixing mechanism 4 is used to fix the forming ring body 3.

[0054] It should be noted that: During the operation, after the forming ring body 3 reaches the position of the patient's mitral valve and supports, it is installed through the first fixing mechanism 4. The first fixing mechanism 4 can be, for example, a puncture nail sleeved on the outer surface of the forming ring body 3, a hole for cooperating with a suture or a hole with a suture, etc., facilitating the medical staff to quickly fix the forming ring body 3 after it is in place.

[0055] See Figure 3As shown, in a preferred embodiment, the first fixing mechanism 4 includes: a plurality of receiving grooves 41, which are arranged in a circular array on the surface of the forming ring body 3; a plurality of implant nails 42, each of which is rotatably connected in a corresponding receiving groove 41, and each implant nail 42 faces the outside of the forming ring body 3; a plurality of first springs 43, with both ends of each first spring 43 connected to the corresponding implant nail 42 and the inner wall of the receiving groove 41 respectively. One end of the push rod 23 that is slidably inserted into the interior of the forming ring body 3 penetrates into the receiving groove 41 and contacts the outer surface of the implant nail 42.

[0056] It should be noted that: the implant nail 42 can be a structure with barbs at one end, and the barb structure extends outside the receiving groove 41. When the push rod 23 is pushed by the elastic plate 21 to act on the forming ring body 3, it can further push the implant nail 42 to rotate towards the outside of the forming ring body 3, so that the implant nail 42 can be synchronously fixed to the position of the patient's mitral valve; generally, the first spring 43 limits the implant nail 42 inside the receiving groove 41, which is convenient for the transportation and installation of the forming ring body 3 during the shaping operation.

[0057] See Figure 3 - Figure 4 As shown, in a more preferred embodiment, a clamping mechanism 5 is further included; the clamping mechanism 5 is used to fix the implant nail 42 in the receiving groove 41.

[0058] It should be noted that: the clamping mechanism 5 can be a clamping groove, a buckle or a metal plate magnetically connecting the implant nail 42 that is arranged in the receiving groove 41 and has an interference fit with the implant nail 42. The clamping mechanism 5 is used to fix the position of the implant nail 42 relative to the forming ring body 3 after the forming ring body 3 is installed, so as to prevent the implant nail 42 from affecting the fixing effect of the forming ring body 3 due to the rotational connection with the receiving groove 41.

[0059] See Figure 4 As shown, in a more preferred embodiment, the clamping mechanism 5 includes: a fixing plate 51, which is fixedly installed inside the receiving groove 41; a clamping groove 52, which is opened on the side of the fixing plate 51 facing the opening of the receiving groove 41, and the clamping groove 52 forms an interference fit with the implant nail 42.

[0060] It should be noted that: after the implant nail 42 is synchronously fixed to the position of the patient's mitral valve, the implant nail 42 is fixed relative to the receiving groove 41 again through the clamping groove 52, so that the implant nail 42 is installed more stably, and further stabilizes the installation of the forming ring body 3.

[0061] Embodiment 3:

[0062] See Figure 5As shown in the figure, the present invention provides a mitral valve annuloplasty ring, including all the contents in Embodiments 1-2 and their preferred embodiments. In addition, a second fixing mechanism 6 is further provided in the receiving groove 41. The second fixing mechanism 6 includes: a turning plate 61 rotatably connected to the inner wall of the receiving groove 41; a protrusion 62 provided on the side of the turning plate 61 close to the inner side of the receiving groove 41; and a plugging nail 63 provided on the side of the turning plate 61 away from the inner side of the receiving groove 41.

[0063] It should be noted that: the axial direction of the rotation axis of the turning plate 61 is perpendicular to the opening direction of the receiving groove 41. After the implant nail 42 is fixed to the mitral valve part of the patient, when the implant nail 42 is received in the receiving groove 41, the turning plate 61 is pushed to rotate by the protrusion 62, so that the plugging nail 63 moves towards the middle of the opening of the receiving groove 41, and then bites into the heart tissue of the patient received in the receiving groove 41 for fixation, improving the stability of the fixation of the annuloplasty ring main body 3.

[0064] Embodiment 4:

[0065] See Figure 3 As shown in the figure, the present invention provides a mitral valve annuloplasty ring, including all the contents in Embodiments 1-3 and their preferred embodiments. In addition, it further includes an adjusting mechanism 7. The adjusting mechanism 7 includes: a plurality of frames 71 sleeved on the outer surface of the annuloplasty ring main body 3 in a circular array; a plurality of second springs 72, and two second springs 72 are fixedly connected in each frame 71. The two second springs 72 are installed opposite to the annuloplasty ring main body 3. One end of each of the two second springs 72 is fixedly connected to the inner wall of the frame 71, and the other end abuts against the outer surface of the annuloplasty ring main body 3; a plurality of screw rods 73, and each screw rod 73 is threadedly connected to the outer surface of the corresponding frame 71. One end of the screw rod 73 located inside the corresponding frame 71 abuts against the annuloplasty ring main body 3.

[0066] It should be noted that: the two second springs 72 cooperate with each other to limit the annuloplasty ring main body 3. After the annuloplasty ring main body 3 is fixed, rotate the screw rod 73 to drive the annuloplasty ring main body 3 to move inside the frame 71, adjust the corresponding position of the annuloplasty ring main body 3, so that after the annuloplasty ring main body 3 is installed, partial positions of the annuloplasty ring main body 3 can be finely adjusted according to requirements, making the annuloplasty ring main body 3 more adaptable to the valve annulus.

[0067] Embodiment 5:

[0068] See Figure 6 As shown in the figure, the present invention provides a mitral valve annuloplasty ring, including all the contents in Embodiments 1-3 and their preferred embodiments. In addition, the support mechanism 2 further includes an elastic ring 24 sleeved on the surface of the bracket 1.

[0069] It should be noted that: The elastic ring 24 is sleeved on the middle part of the surface of the bracket 1, corresponding to the size and position of the bracket 1. Through the setting of the elastic ring 24, when the forming ring body 3 is sleeved on the bracket 1, the position of the forming ring body 3 relative to the bracket 1 can be accurately controlled, and it can provide certain support for the forming ring body 3 during installation, thus making the installation of the forming ring body 3 more convenient.

[0070] In a preferred embodiment, the material of the forming ring body 3 is nitinol shape memory alloy.

[0071] It should be noted that: The forming ring body 3 is made of nitinol shape memory alloy. Before implantation, the forming ring body 3 can be processed into a shape convenient for implantation at low temperature. After implantation, due to the relatively high body temperature, the forming ring body 3 will undergo a phase change due to the temperature rise, changing from the martensite phase to the austenite phase, and thus automatically extending or contracting to a pre-set shape to better fit the mitral valve annulus.

[0072] In summary, compared with the prior art, the present invention has the following beneficial effects:

[0073] 1. Through the cooperation of the bracket and the support mechanism (elastic plate, push plate, push rod and elastic ring), the forming ring assembly is placed on the atrial valve annulus. By pressing the elastic plate, the bracket deforms, driving the forming ring body to deform synchronously, so that the forming ring body can be unfolded more quickly, thereby making the supporting efficiency of the forming ring body higher. At the same time, through the deformation of the bracket, the inner arc surface of the forming ring body is supported, making the forming ring body more stable during installation.

[0074] 2. By setting the first fixing mechanism (receiving groove, implant nail and first spring) and its cooperation with the push rod, when the mitral valve forming ring is unfolded, the implant nail can be pushed by the push rod to rotate to the outside of the forming ring body for fixed installation of the mitral valve forming ring, improving the surgical efficiency of mitral valve plasty.

[0075] 3. By setting the clamping mechanism (fixing plate and clamping groove) to limit the implant nail, the rotation of the implant nail is prevented from affecting the stability of the installed mitral valve forming ring.

[0076] 4. By setting the adjusting mechanism (frame body, second spring and screw rod), the forming ring body can be driven to move inside the frame body by rotating the screw rod to adjust the corresponding position of the forming ring body, so that after the forming ring body is installed, the position of the forming ring body can be fine-tuned according to needs, making the forming ring body more adaptable to the valve annulus.

[0077] 5. By providing the second fixing mechanism (the turning plate, the protrusion, and the insertion peg), the present invention further improves the stable installation of the mitral valve annuloplasty ring and extends the service life of the mitral valve annuloplasty ring.

[0078] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0079] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A mitral valvuloplasty ring, characterized in that: It comprises a bracket (1), a support mechanism (2) is installed inside the bracket (1), a shaping ring assembly is arranged on the surface of the bracket (1), and the shaping ring assembly comprises a shaping ring body (3); The supporting mechanism (2) comprises: A plurality of elastic plates (21), each of the elastic plates (21) being fixedly connected to the bracket (1) in an annular array; A pushing plate (22), the pushing plate (22) being arranged inside the bracket (1), the pushing plate (22) being fixedly connected to each of the elastic plates (21); A plurality of push rods (23) are provided, each of the push rods (23) is arranged on the outer edge of the elastic plate (21), and one end of each push rod (23) away from the elastic plate (21) is slidably inserted into the interior of the forming ring body (3).

2. A mitral annuloplasty ring according to claim 1, characterized in that: It also comprises a first fixing mechanism (4); the first fixing mechanism (4) is used to fix the forming ring body (3).

3. A mitral annuloplasty ring according to claim 2, characterized in that: The first fixing mechanism (4) comprises: A plurality of receiving grooves (41), wherein the plurality of receiving grooves (41) are arranged in an annular array on the surface of the forming ring body (3); A plurality of implant pins (42), each of the implant pins (42) is rotatably connected in each of the corresponding receiving grooves (41), and each of the implant pins (42) faces the outside of the shaping ring body (3); A plurality of first springs (43), wherein two ends of each first spring (43) are respectively connected to the corresponding implant nail (42) and the inner wall of the receiving groove (41); One end of the push rod (23) is slidably inserted into the interior of the shaping ring body (3) and penetrates into the interior of the receiving groove (41) to contact the outer surface of the implant nail (42).

4. A mitral annuloplasty ring according to claim 3, characterized in that: It also comprises a clamping mechanism (5); the clamping mechanism (5) is used to fix the implant nail (42) in the receiving groove (41).

5. A mitral annuloplasty ring according to claim 4, characterized in that: The clamping mechanism (5) comprises: A fixing plate (51), the fixing plate (51) being fixedly installed inside the receiving groove (41); A clamping groove (52) is provided on a side (52) of the fixing plate (51) that is open toward the receiving groove (41), and the clamping groove (52) and the implant nail (42) are adapted to form an interference fit.

6. The mitral annuloplasty ring according to claim 3, characterized in that: A second fixing mechanism (6) is also provided in the storage groove (41), and the second fixing mechanism (6) comprises: A flip plate (61), the flip plate (61) being rotatably connected to the inner wall of the receiving groove (41); A protrusion (62), the protrusion (62) being arranged on a side of the flip plate (61) close to the inner side of the receiving groove (41); An inserting pin (63), wherein the inserting pin (63) is arranged on a side of the flip plate (61) away from the inner side of the receiving groove (41).

7. The mitral annuloplasty ring according to claim 1, characterized in that: It also comprises an adjusting mechanism (7), wherein the adjusting mechanism (7) is used to adjust the shape of the shaping ring body (3) when the shaping ring body (3) is installed.

8. The mitral annuloplasty ring according to claim 7, characterized in that: The regulating mechanism (7) comprises: A plurality of frames (71), each of the frames (71) being arranged in an annular array and sleeved on the outer surface of the forming ring body (3); a plurality of second springs (72), two second springs (72) being fixedly connected in each of the frames (71), the two second springs (72) being installed relative to the forming ring body (3), one end of the two second springs (72) being fixedly connected to the inner wall of the frame (71), and the other end of the two second springs (72) being in contact with the outer surface of the forming ring body (3); A plurality of screw rods (73), each of the screw rods (73) is threadedly connected to the outer surface of the corresponding frame (71), and one end of the screw rod (73) located in the corresponding frame (71) abuts against the forming ring body (3).

9. The mitral annuloplasty ring according to claim 1, characterized in that: The support mechanism (2) further comprises an elastic ring (24), wherein the elastic ring (24) is sleeved on the surface of the bracket (1).

10. A mitral annuloplasty ring according to any one of claims 1 to 9, characterized in that: The forming ring body (3) is made of nickel-titanium memory alloy.

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