Tricuspid valve forming ring for pulmonary arterial hypertension patient
By designing a tricuspid valve forming ring including an anterior ring body, a posterior ring body and multiple annulus bodies, dynamic adjustment of the diameter of the forming ring is achieved by using the connecting joint and limiting device, the problem that the existing forming ring cannot be adjusted adaptively is solved, and effective protection and adaptation in the case of pulmonary arterial hypertension is achieved.
Patent Information
- Application Number
- CN202421681674.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-16
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-07-16
AI Technical Summary
The existing tricuspid valve shaping ring cannot adaptively adjust the size according to the changes in the pulmonary artery pressure in the patient, resulting in poor effect in the case of pulmonary artery hypertension and ineffective protection of the right ventricle.
A tricuspid valve forming ring including a front ring body, a rear ring body and a plurality of valve annulus bodies is designed, and dynamic adjustment of the diameter of the forming ring is achieved through the coordination of the joint and the limiting device. The connecting joint slides in the arc-shaped blind hole and the arc-shaped through hole, and the limiting device includes a limiting spring and a limiting ball for determining the minimum and maximum diameter of the forming ring.
Dynamic adjustment of the diameter of the forming ring is achieved to adapt to the specific conditions of the heart, ensure good closure of the tricuspid valve, and protect the right ventricle when the pulmonary artery pressure is too high, and avoid right heart failure.
Smart Images
Figure CN222899397U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of medical devices, and specifically relates to a tricuspid annuloplasty ring for patients with pulmonary hypertension. Background Art
[0002] Tricuspid regurgitation, namely TR, the continuous risk factors of TR include tricuspid dilation, right ventricular dysfunction and remodeling degree, leaflet tethering height, etc. Functional tricuspid insufficiency caused by left heart valve surgery mostly requires simultaneous treatment of the tricuspid valve. The annuloplasty ring can effectively help solve the problem of tricuspid dilation and insufficiency, and can effectively avoid malignant remodeling of the right ventricle.
[0003] The existing annuloplasty rings include two types: rigid rings and flexible rings. The flexible ring can change with the activities of the right ventricle to adapt to physiological changes. The rigid ring has good mechanical strength. People with very high pulmonary artery pressure before surgery cannot immediately drop to normal and it takes time to decline. All patients have the possibility of developing pulmonary hypertension crisis after surgery. The cost of a right heart floating catheter is not low. High pulmonary artery pressure will lead to obstruction of right heart ejection, and too high right ventricular pressure will induce right heart failure. At this time, tricuspid insufficiency plays the role of a "pressure limiting valve". Although it cannot solve the problem of ejection, it can protect the right heart from damage caused by high pressure during this period. Currently, all tricuspid annuloplasty rings are applied to patients with severe pulmonary hypertension, and their effect is poor because they cannot change with the changes of the right heart system.
[0004] Therefore, it is necessary to continue to design a tricuspid annuloplasty ring that can adjust its size according to the pulmonary artery pressure in the patient's body at all times to adapt to the specific conditions of the heart. Content of the Utility Model
[0005] The purpose of the utility model is to provide a tricuspid annuloplasty ring for patients with pulmonary hypertension.
[0006] A tricuspid annuloplasty ring for patients with pulmonary hypertension includes a front ring body and a rear ring body. The front ring body and the rear ring body are provided with a plurality of valve ring bodies. Connecting joints are arranged between the front ring body and the valve ring bodies, between the valve ring bodies and the rear ring body, and between adjacent two valve ring bodies. Arc-shaped blind holes are opened in both the front ring body and the rear ring body, and arc-shaped through holes are opened in the valve ring bodies. The connecting joints are slidably arranged in the arc-shaped blind holes or arc-shaped through holes. Limiting devices matched with the arc-shaped blind holes or arc-shaped through holes are arranged at both ends of the connecting joints. A notch is arranged between the front ring body and the rear ring body. The mutually approaching ends of the front ring body and the rear ring body are not on the same horizontal plane, and an elastic joint is fixedly arranged at the end of the rear ring body close to the front ring body.
[0007] Further, the limiting device includes a limiting spring disposed inside the connecting joint. One end of the limiting spring is fixedly connected to the connecting joint, and the other end of the limiting spring is fixedly provided with a limiting ball. A limiting hole is formed in the connecting joint. First limiting grooves and second limiting grooves are provided in both the arc-shaped blind hole and the arc-shaped through hole. The side of the limiting ball away from the limiting spring penetrates through the limiting hole and cooperates with the first limiting groove or the second limiting groove. A slideway is provided between the first limiting groove and the second limiting groove.
[0008] Further, a tightening spring is disposed in the arc-shaped blind hole. One end of the tightening spring is fixedly connected to the connecting joint, and the other end of the tightening spring is fixedly connected to the front ring body or the rear ring body.
[0009] Further, a tightening spring is disposed in the arc-shaped through hole. Both ends of the tightening spring are respectively fixedly connected to two connecting joints.
[0010] Further, a marking line is provided on the outer side of the rear ring body, and a scale line matching the marking line is provided on the outer side of the elastic joint.
[0011] In summary, the present utility model has the following beneficial effects:
[0012] The present utility model adjusts the length of the connecting joint located in the arc-shaped blind hole and the arc-shaped through hole according to the change of the right ventricle caused by the pulmonary artery pressure in the patient's body, so as to realize the adjustment of the diameter of the tricuspid valve annuloplasty ring of the present utility model. In the normal state, the diameter of the present utility model is in the minimum state, ensuring good closure of the tricuspid valve. When the heart contracts and relaxes, as the pulmonary artery pressure increases, the diameter of the present utility model gradually increases. The limiting device limits the maximum diameter of the present utility model, restricting the expansion of the heart not to exceed the pre-designed maximum circumference, ensuring the effective function of the present utility model. The elastic change of the elastic joint can cause artificial tricuspid valve insufficiency to release pressure and protect the right ventricle. When the pulmonary artery pressure is too high, the elastic joint is compressed and bent, converting the kinetic energy brought by the high pressure into potential energy, thereby discharging the excessive pressure to protect the right ventricle; when the pressure is low, it is converted back into kinetic energy, and the elastic joint returns to its original shape. The cooperation of the marking line and the scale line facilitates observing the bending degree of the elastic joint, and the pressure of the patient's pulmonary artery in the current state can be estimated through the size of the bending degree of the elastic joint. The present utility model can adjust its own size according to the pulmonary artery pressure in the patient's body at any time to adapt to the specific condition of the heart. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] The following further describes the present utility model in detail with reference to the drawings and specific embodiments:
[0014] Figure 1 It is a top view cross-sectional view of a tricuspid valve annuloplasty ring for patients with pulmonary hypertension of the present utility model.
[0015] In the figure: 1 front annular body, 2 rear annular body, 3 valve annular body, 4 arc-shaped blind hole, 5 arc-shaped through hole, 6 connecting joint, 7 limiting device, 71 first limiting groove, 72 second limiting groove, 73 limiting spring, 74 limiting ball, 75 limiting hole, 76 slideway, 8 tightening spring, 9 elastic joint, 10 marking line, 11 graduation line. Specific embodiments
[0016] In order to make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0017] The following will further illustrate the present utility model in conjunction with the attached Figure 1 description:
[0018] A tricuspid valve annuloplasty ring for patients with pulmonary hypertension includes a front annular body 1 and a rear annular body 2. A plurality of valve annular bodies 3 are provided between the front annular body 1 and the rear annular body 2. Connecting joints 6 are provided between the front annular body 1 and the valve annular body 3, between the valve annular body 3 and the rear annular body 2, and between adjacent two valve annular bodies 3. Arc-shaped blind holes 4 are opened in both the front annular body 1 and the rear annular body 2, and an arc-shaped through hole 5 is opened in the valve annular body 3. The connecting joint 6 is slidably arranged in the arc-shaped blind hole 4 or the arc-shaped through hole 5. Limiting devices 7 are provided at both ends of the connecting joint 6 and are matched with the arc-shaped blind hole 4 or the arc-shaped through hole 5. A notch 12 is provided between the front annular body 1 and the rear annular body 2. The ends of the front annular body 1 and the rear annular body 2 close to each other are not on the same horizontal plane. An elastic joint 9 is fixedly provided at the end of the rear annular body 2 close to the front annular body 1. A marking line 10 is provided on the outer side of the rear annular body 2, and a graduation line 11 matched with the marking line 10 is provided on the outer side of the elastic joint 9.
[0019] In this embodiment, preferably, the front annular body 1, the plurality of valve annular bodies 3 and the rear annular body 2 are combined to form a spiral C-shaped structure. The tricuspid valve is placed inside the C-shaped structure annuloplasty ring, and the present utility model is connected to the heart tissue with sutures. The connecting joint 6 is used to connect the front annular body 1 and the valve annular body 3, the valve annular body 3 and the rear annular body 2, and adjacent two valve annular bodies 3. The length of the connecting joint 6 located in the arc-shaped blind hole 4 and the arc-shaped through hole 5 is adjusted through the change of the right ventricle caused by the pulmonary artery pressure in the patient's body, so as to realize the adjustment of the diameter of the tricuspid valve annuloplasty ring of the present utility model. The limiting device 7 is used to determine the minimum diameter and the maximum diameter of the tricuspid valve annuloplasty ring of the present utility model.
[0020] When the elastic joint 9 is under pressure, it can bend to convert the kinetic energy brought by high pressure into elastic potential energy for storage. The morphological changes during the contraction and relaxation of the heart cause the connecting joint 6 to slide in cooperation with the arc-shaped blind hole 4 and the arc-shaped through hole 5, thereby changing the diameter of the present utility model to adapt to the morphological changes of the heart. In the normal state, the diameter of the present utility model is in the minimum state, ensuring good closure of the tricuspid valve. When the heart contracts and relaxes, as the pulmonary artery pressure increases, the diameter of the present utility model gradually increases. The limiting device 7 limits the maximum diameter of the present utility model, restricting the expansion of the heart not to exceed the pre-designed maximum circumference, ensuring the effective function of the present utility model.
[0021] The elastic change of the elastic joint 9 can cause artificial tricuspid insufficiency to release pressure and protect the right ventricle. When the pulmonary artery pressure is too high, the elastic joint 9 is pressed and bent, converting the kinetic energy brought by high pressure into potential energy, thereby discharging the excessive pressure to protect the right ventricle; when the pressure is low, it is converted back into kinetic energy, and the elastic joint 9 returns to its original shape. The scale line 10 and the graduation line 11 cooperate to facilitate the observation of the bending degree of the elastic joint 9. The pressure of the pulmonary artery of the patient in the current state can be estimated by the size of the bending degree of the elastic joint 9.
[0022] The limiting device 7 includes a limiting spring 73. The limiting spring 73 is arranged inside the connecting joint 6. One end of the limiting spring 73 is fixedly connected with the connecting joint 6, and a limiting ball 74 is fixedly arranged at the other end of the limiting spring 73. A limiting hole 75 is formed on the connecting joint 6. The first limiting groove 71 and the second limiting groove 72 are arranged in both the arc-shaped blind hole 4 and the arc-shaped through hole 5. The side of the limiting ball 74 away from the limiting spring 73 penetrates through the limiting hole 75 and cooperates with the first limiting groove 71 or the second limiting groove 72. A slideway 76 is arranged between the first limiting groove 71 and the second limiting groove 72.
[0023] In this embodiment, preferably, when the diameter of the present utility model is the smallest, the limiting ball 74 is located in the first limiting groove 71. When the pulmonary artery pressure increases and the right ventricle expands and becomes larger, the right ventricle squeezes the inner sides of the front annular body 1, the plurality of valve annular bodies 3, and the rear annular body 2, causing the connecting joint 6 to slide outwards from the arc-shaped blind hole 4 and the arc-shaped through hole 5. The limiting ball 74 squeezes the limiting spring 73 to deform, and the connecting joint 6 drives the limiting ball 74 to slide along the slideway 76 towards the direction of the second limiting groove 72. When the limiting ball 74 slides into the second limiting groove 72, the diameter of the present utility model is in the maximum state, restricting the expansion of the heart not to exceed the pre-designed maximum circumference, ensuring the effective function of the present utility model.
[0024] A tightening spring 8 is arranged in the arc-shaped blind hole 4. One end of the tightening spring 8 is fixedly connected with the connecting joint 6, and the other end of the tightening spring 8 is fixedly connected with the front annular body 1 or the rear annular body 2. A tightening spring 8 is arranged in the arc-shaped through hole 5. Both ends of the tightening spring 8 are respectively fixedly connected with two connecting joints 6.
[0025] In this embodiment, preferably, when the diameter of the present utility model is at its minimum, the tightening spring 8 is in a slightly elongated state or a normal state; when the diameter of the present utility model is at its maximum, the tightening spring 8 is in an elongated state. When the pulmonary artery pressure decreases and the right ventricle expands and becomes smaller, the right ventricle no longer squeezes the inner sides of the front annular body 1, the plurality of valve annular bodies 3, and the rear annular body 2. The tightening spring 8 in the elongated state generates a reaction force, pulling the connecting joint 6 to slide into the interior of the arc-shaped blind hole 4 and the arc-shaped through hole 5. The limiting ball 74 squeezes the limiting spring 73 and deforms, and the connecting joint 6 drives the limiting ball 74 to slide along the slideway 76 towards the direction of the first limiting groove 71. When the limiting ball 74 slides into the first limiting groove 71, the present utility model returns to the state with the minimum diameter.
[0026] In this embodiment, preferably, the front annular body 1, the valve annular body 3, and the rear annular body 2 are provided with sealing rings that cooperate with the connecting joint 6. The sealing rings can prevent blood from entering the arc-shaped blind hole 4 and the arc-shaped through hole 5. Blood coagulation will affect the use effects of the limiting device 7 and the tightening spring 8.
[0027] In summary, the present utility model is not limited to the above specific embodiments. Those skilled in the art can make several changes and modifications without departing from the spirit and scope of the present utility model. The protection scope of the present utility model shall be subject to the claims of the present utility model.
[0028] In the description of this patent, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing this patent and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to this patent.
[0029] In the description of this patent, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", "connection", "setting" should be understood in a broad sense. For example, it can be fixedly connected and set, or detachably connected and set, or integrally connected and set. For those of ordinary skill in the art, the specific meanings of the above terms in this patent can be understood according to specific situations.
Claims
1. A tricuspid valvuloplasty ring for patients with pulmonary hypertension, characterized in that: The invention comprises a front ring body (1) and a rear ring body (2), wherein the front ring body (1) and the rear ring body (2) are provided with a plurality of valve ring bodies (3), and connecting joints (6) are provided between the front ring body (1) and the valve ring body (3), between the valve ring body (3) and the rear ring body (2), and between two adjacent valve ring bodies (3). The front ring body (1) and the rear ring body (2) are provided with arc-shaped blind holes (4), the valve ring body (3) is provided with an arc-shaped through hole (5), and the connecting joints (6) are provided with arc-shaped blind holes (4). ) is slidably arranged in the arc-shaped blind hole (4) or the arc-shaped through hole (5), and both ends of the connecting joint (6) are provided with limit devices (7) that match the arc-shaped blind hole (4) or the arc-shaped through hole (5), a gap (12) is provided between the front ring body (1) and the rear ring body (2), and the ends of the front ring body (1) and the rear ring body (2) that are close to each other are not arranged on the same horizontal plane, and an elastic joint (9) is fixedly provided at the end of the rear ring body (2) that is close to the front ring body (1).
2. A tricuspid valvuloplasty ring for patients with pulmonary hypertension as claimed in claim 1, characterized in that: The limiting device (7) comprises a limiting spring (73), wherein the limiting spring (73) is arranged inside the connecting joint (6), one end of the limiting spring (73) is fixedly connected to the connecting joint (6), and the other end of the limiting spring (73) is fixedly provided with a limiting ball (74), a limiting hole (75) is provided on the connecting joint (6), a first limiting groove (71) and a second limiting groove (72) are provided in the arc-shaped blind hole (4) and the arc-shaped through hole (5), a side of the limiting ball (74) away from the limiting spring (73) passes through the limiting hole (75) and cooperates with the first limiting groove (71) and the second limiting groove (72), and a slideway (76) is provided between the first limiting groove (71) and the second limiting groove (72).
3. A tricuspid valvuloplasty ring for patients with pulmonary hypertension as claimed in claim 2, characterized in that: A tightening spring (8) is arranged in the arc-shaped blind hole (4), one end of the tightening spring (8) is fixedly connected to the connecting joint (6), and the other end of the tightening spring (8) is fixedly connected to the front ring body (1) or the rear ring body (2).
4. A tricuspid valvuloplasty ring for patients with pulmonary hypertension as claimed in claim 3, characterized in that: A tightening spring (8) is arranged in the arc-shaped through hole (5), and two ends of the tightening spring (8) are respectively fixedly connected to two connecting joints (6).
5. A tricuspid valvuloplasty ring for patients with pulmonary hypertension as claimed in claim 1, characterized in that: The outer side of the rear ring body (2) is provided with a marking line (10), and the outer side of the elastic joint (9) is provided with a scale line (11) matching the marking line (10).