Aortic prosthetic heart valve
By designing a combination of stents, pockets, and elastic supports, the problem of poor fit between the aortic artificial heart valve and the irregular surface of the calcified area was solved, thus preventing paravalvular leakage and reducing the difficulty of construction.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2026-03-27
AI Technical Summary
Existing aortic artificial heart valves cannot fit tightly to the uneven or irregular surfaces of calcified areas in patients, leading to paravalvular leakage.
Design an aortic artificial heart valve, including a stent, a pocket, and multiple thin strip-shaped elastic supports. The pocket is wrapped around the outside of the stent, and the elastic supports expand and deform in the pocket cavity. The elastic force pushes the pocket to fit tightly against the diseased tissue. The stent is provided with a one-way valve body injection port to facilitate position adjustment and expansion.
It effectively prevents paravalvular leakage, improves the tightness of the fit with diseased tissue, reduces the difficulty of construction, and enhances the valve's adaptive deformation ability.
Smart Images
Figure CN224039401U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a semiconductor technical field, concretely relates to an aortic artificial heart valve. BACKGROUND
[0002] Most of the heart valve diseases adopt the transcatheter technology of delivering and implanting the artificial heart valve by the catheter delivery assembly, the artificial valve is installed in the distal end part of the catheter delivery assembly in the curled state, the catheter delivery assembly advances to the implantation position through the blood vessel of the patient, the artificial valve located at the distal end of the catheter delivery assembly is supported open by the balloon expansion, and the treatment mode can effectively improve the treatment efficiency and relieve the pain of the patient.
[0003] At present, for the patient with serious calcification of aortic heart valve, the treatment mode of balloon dilatation artificial heart valve is generally adopted to implant the artificial heart valve. Since the aortic heart valve of the patient is seriously calcified, uneven or irregular lesion tissue structure usually appears at the calcification site, so that the aortic artificial heart valve cannot completely match the lesion tissue structure of the patient, thereby causing the problem of perivalvular leakage and causing damage to the ventricle and subvalvular structure, and seriously, the lesion tissue structure also affects the normal blood flow of the aortic artificial heart valve.
[0004] Therefore, it is necessary to provide a new aortic artificial heart valve. SUMMARY
[0005] Based on the above problems existing in the prior art, the purpose of the embodiments of the utility model is to provide an aortic artificial heart valve, which can solve the technical problems that the existing artificial heart valve cannot closely match the uneven or irregular lesion tissue structure appearing at the calcification site of the patient, and it is difficult to ensure that the aortic artificial heart valve completely matches the lesion tissue structure of the patient and easily produces perivalvular leakage.
[0006] To achieve the above-mentioned purpose, the utility model adopts the technical scheme of: an aortic artificial heart valve, comprising a stent, a bag, and a plurality of thin strip-shaped elastic support members, the stent is in a circular ring structure when unfolded, the middle section of the stent is provided with a waist, the elastic bag is wrapped on the outside of the waist, so that the inside of the bag and the outside of the stent form a bag cavity isolated from the outside, the elastic support members are elastically supported on the inner circumferential wall of the bag, and the bag is deformed when the pressure in the bag cavity is greater than the external environment pressure, the elastic support members push the bag along the radial direction of the stent by elastic force.
[0007] Further, the elastic support members extend along the axial direction of the stent, and the middle part of the elastic support members arches outwardly of the stent, and the plurality of elastic support members are arranged at intervals around the circumferential direction of the stent.
[0008] Further, the bracket is provided with an injection port for communicating with the sac cavity.
[0009] Further, the injection port is in a one-way valve body structure.
[0010] Further, the two ends of the middle waist are respectively provided with a head end one and a head end two.
[0011] Further, the head end one and the head end two are in an outward flared shape.
[0012] Further, the bracket is in a grid structure.
[0013] Further, at least a film layer structure is attached to the middle waist of the bracket.
[0014] Further, the aortic artificial heart valve further comprises an artificial valve.
[0015] Further, the artificial valve is separately arranged from the bracket, or the artificial valve is fixedly connected with the bracket.
[0016] Compared with the prior art, the above technical scheme in the embodiment of the utility model has at least one of the following beneficial effects:
[0017] The utility model discloses an aortic artificial heart valve which comprises a bracket, a sac bag and a plurality of elastic supporting members in the form of thin strips. When the bracket is unfolded, it is in the form of a circular ring. A middle waist is arranged in the middle section of the bracket and is used for clamping the position of the original heart valve of a patient. The sac bag is wrapped on the outside of the middle waist and has elasticity. The inside of the sac bag and the outside of the bracket form a sac cavity which is isolated from the outside. The elastic supporting members are elastically supported on the inner circumferential wall of the sac bag. When the pressure in the sac cavity is greater than the external pressure, the sac bag is deformed by expansion, and the outer wall of the sac bag has good elastic deformation capacity. The elastic supporting members push and squeeze the sac bag along the radial direction of the bracket by elastic force. When the middle waist is inserted into the original heart valve of the patient, the elastic supporting members can be clamped in the small gaps of the irregular surface of the pathological tissue structure by the thin strip structure. At the same time, the sac bag also expands outward under the action of the pressure difference in the sac cavity. When the sac cavity is in contact with the pathological tissue structure, the sac bag is deformed by self-adaptation. The elastic supporting members also exert external deformation elastic force on the sac bag, so that the sac bag is closely attached to the pathological tissue structure, and the perivalvular leakage can be effectively prevented. BRIEF DESCRIPTION OF DRAWINGS
[0018] The utility model will be further described in connection with the drawings and embodiments.
[0019] Figure 1 The utility model provides an aortic artificial heart valve front view schematic drawing.
[0020] Figure 2The exploded view of the aortic artificial heart valve is provided for the embodiment of the utility model.
[0021] Figure 3 For along Figure 1 The sectional view along the E-E direction.
[0022] Figure 4 For along Figure 1 The sectional view along the F-F direction, and the position relation schematic view of the aortic artificial heart valve and the original heart valve is shown.
[0023] Figure 5 For Figure 3 The enlarged schematic view of the A area.
[0024] Wherein, the reference signs in the drawing: 100, the original heart valve; 1, the support; 11, the middle waist; 12, the head end one; 13, the head end two; 2, the bag; 3, the elastic support; 4, the bag cavity; 5, the injection port. DETAILED DESCRIPTION
[0025] In order to make the technical problems, technical schemes and beneficial effects to be solved by the utility model more clear and apparent, the utility model is further described in detail in the following with the drawings and examples.It should be understood that the specific examples described herein are only used to explain the utility model, and are not used to limit the utility model.
[0026] It should be noted that when an element is referred to as being "connected with" or "disposed with" another element, it can be directly on the other element or indirectly on the other element.When an element is referred to as being "connected with" another element, it can be directly connected to the other element or indirectly connected to the other element.
[0027] In the description of the utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction relationship of two elements.For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0028] It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like refer to the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.
[0029] Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the application. Thus, the appearances of the phrase "in one embodiment", "in some embodiments" or "in some embodiments" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.
[0030] Please refer to Figures 1 to 5 As shown in the drawings, the present application provides an aortic artificial heart valve, which comprises a stent 1, a bag 2, and a plurality of thin strip-shaped elastic support members 3. The stent 1 is in the form of a circular ring when expanded. The middle section of the stent 1 is provided with a waist 11 for clamping the original heart valve 100 of the patient. The elastic bag 2 is wrapped on the outside of the waist 11, so that the inside of the bag 2 and the outside of the stent 1 form a bag cavity 4 isolated from the outside environment. The elastic support members 3 are elastically supported on the inner circumferential wall of the bag 2, so that when the pressure in the bag cavity 4 is greater than the external environment pressure, the bag 2 is deformed and expanded, and the outer wall of the bag 2 has good elastic deformation capability. The elastic support members 3 push the bag 2 along the radial direction of the stent 1 by elastic force, as shown in the drawings, so that when the waist 11 is inserted into the original heart valve 100 of the patient, the elastic support members 3 can be clamped in the small gap of the irregular surface of the diseased tissue structure, and the bag 2 will also expand outward under the action of the pressure difference in the bag cavity 4. When the bag cavity 4 abuts against the diseased tissue structure, the bag 2 will be deformed and adapted, and the elastic support members 3 will also exert an external deformation elastic force on the bag 2, further making the bag 2 closely fit the diseased tissue structure, which can effectively prevent paravalvular leakage. Figure 4 As shown in the drawings, the present application provides an aortic artificial heart valve, which comprises a stent 1, a bag 2, and a plurality of thin strip-shaped elastic support members 3. The stent 1 is in the form of a circular ring when expanded. The middle section of the stent 1 is provided with a waist 11 for clamping the original heart valve 100 of the patient. The elastic bag 2 is wrapped on the outside of the waist 11, so that the inside of the bag 2 and the outside of the stent 1 form a bag cavity 4 isolated from the outside environment. The elastic support members 3 are elastically supported on the inner circumferential wall of the bag 2, so that when the pressure in the bag cavity 4 is greater than the external environment pressure, the bag 2 is deformed and expanded, and the outer wall of the bag 2 has good elastic deformation capability. The elastic support members 3 push the bag 2 along the radial direction of the stent 1 by elastic force, as shown in the drawings, so that when the waist 11 is inserted into the original heart valve 100 of the patient, the elastic support members 3 can be clamped in the small gap of the irregular surface of the diseased tissue structure, and the bag 2 will also expand outward under the action of the pressure difference in the bag cavity 4. When the bag cavity 4 abuts against the diseased tissue structure, the bag 2 will be deformed and adapted, and the elastic support members 3 will also exert an external deformation elastic force on the bag 2, further making the bag 2 closely fit the diseased tissue structure, which can effectively prevent paravalvular leakage.
[0031] In some embodiments, the stent 1 can be radially compressed and deformed so that the stent 1 can be inserted into the human tissue structure after being compressed, and the stent 1 can recover to the original shape when released. The stent 1 can be made of elastic material or material with shape memory performance.
[0032] In some embodiments, the stent 1 is a mesh structure, which can better support the tissue wall and provide sufficient elasticity. It is understood that the stent 1 is further provided with a film layer structure. Specifically, in the present embodiment, the film layer structure is attached to the middle waist 11 of the stent 1, so as to achieve the sealing of the capsule cavity 4.
[0033] As shown in Figure 1 and Figure 2 In some embodiments, the two ends of the middle waist 11 are respectively provided with a head end one 12 and a head end two 13. The head end one 12 and the head end two 13 are in the shape of an outwardly expanding mouth, so that when the stent 1 is released and the middle waist 11 is located on the original heart valve 100 of the patient, the head end one 12 and the head end two 13 at the two ends can form axial limiting clamping, thereby stably maintaining the position of the middle waist 11 adhering to the original heart valve 100 of the patient.
[0034] As shown in Figure 2 In some embodiments, the elastic support 3 is arranged along the axial direction of the stent 1, and the middle part of the elastic support 3 is arched outwardly from the stent 1. A plurality of elastic supports 3 are arranged at intervals around the circumference of the stent 1.
[0035] As shown in Figure 5 In some embodiments, the stent 1 is provided with an injection port 5 for communicating with the capsule cavity 4. In this way, when the aortic artificial heart valve is sent into the human body, the capsule cavity 4 can be compressed and reduced in size, so as not to occupy too much space. When the capsule cavity 4 needs to be filled with pressure after entering the designated position, medium can be injected into the capsule cavity 4 through the injection port 5. It is understood that the capsule cavity 4 can be filled with medium to expand and open the capsule bag 4 after the stent 1 is released and the position of the stent 1 is adjusted. In this way, after the stent 1 is released, the position of the stent 1 can be adjusted conveniently because the capsule bag 2 has not been tightly abutted against the original heart valve 100. Compared with the prior art in which the stent 1 is released and expanded at the same time to complete the abutment positioning, the aortic artificial heart valve provided in the present embodiment has lower construction difficulty. Specifically, the injection port 5 is in the structure of a one-way valve body. The injection port 5 is closed from the inside to the outside of the capsule cavity 4. The injection port 5 is guided from the outside to the inside of the capsule cavity 4, that is, the diameter of the injection port 5 gradually decreases from the outside to the inside of the capsule cavity 4, and the closing of the injection port 5 is realized through the elastic deformation of the material.
[0036] In some embodiments, the aortic artificial heart valve further comprises an artificial valve (not shown in the figure), which is arranged inside the stent 1. Specifically, the artificial valve can be arranged separately from the stent 1, or the artificial valve can be fixedly connected to the stent 1. The stent 1 is used to support and fix the artificial valve, and the artificial valve maintains a circular state by the support force of the stent 1. The stent 1 is used to abut the original heart valve 100 of the patient, and the artificial valve is implanted and fixed to the lesion of the original heart valve 100 of the patient, so that the artificial valve can replace the original heart valve of the patient to maintain normal heart function. The stent 1 is made of a plastic deformation alloy material with fatigue resistance, so that the stent 1 can be radially compressed or radially expanded. When the stent 1 is in a radially compressed state, it can be implanted into the heart position through the aortic blood vessel of the patient, and when the stent 1 is in a radially expanded state, it can provide a radial support force to abut the original heart valve 100 of the patient.
[0037] In some embodiments, the material of the artificial valve is one or more of a solution-treated biological tissue, a polymer material, and a tissue engineering material. For example, the material of the artificial valve is preferably a pericardial material, which mainly includes a pig pericardium and a cow pericardium. The pig pericardium is a dense tissue wrapping a pig heart, and the cow pericardium is a dense tissue wrapping a cow heart. The pig pericardium and the cow pericardium have a high collagen content and are very dense and compact. An artificial valve made of the pericardial material has better tolerance to the pressure of a cardiac cycle and is less bent under bending stress. Therefore, the artificial valve made of the pericardial material has better tolerance to the pressure of a cardiac cycle, thereby improving the medical effect and durability of the artificial valve.
[0038] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. An aortic prosthetic heart valve, characterized by: The application relates to aortic artificial heart valve, which comprises a support, a bag and a plurality of elastic supporting members in the shape of thin strips, the support is in the shape of a ring when unfolded, a middle section of the support is provided with a waist, the bag is wrapped outside the waist and has elasticity, the inside of the bag and the outside of the support form a bag cavity which is isolated from the outside, the elastic supporting members are elastically supported on the inner circumferential wall of the bag, the bag is deformed and expanded when the pressure in the bag cavity is greater than the external environment pressure, and the elastic supporting members push the bag along the radial direction of the support by elastic force.
2. An aortic artificial heart valve according to claim 1, characterized in that: The elastic supporting members are arranged along the axial direction of the support, and the middle sections of the elastic supporting members are arched outside the support, and the plurality of elastic supporting members are arranged at intervals in the circumferential direction of the support.
3. An aortic artificial heart valve according to claim 1, characterized in that: The support is provided with an injection port for communicating with the bag cavity.
4. An aortic artificial heart valve according to claim 3, characterized in that: The injection port is in the structure of a one-way valve.
5. The aortic artificial heart valve of claim 1, wherein: The two ends of the waist are respectively provided with head end one and head end two.
6. An aortic artificial heart valve according to claim 5, characterized in that: The head end one and the head end two are in the shape of an outwardly flared mouth.
7. The aortic artificial heart valve of claim 1, wherein: The support is in the structure of a mesh.
8. An aortic artificial heart valve according to claim 7, characterized in that: A film layer structure is attached to at least the waist of the support.
9. The aortic artificial heart valve of claim 1, wherein: The aortic artificial heart valve further comprises an artificial valve.
10. An aortic artificial heart valve according to claim 9, characterized in that: The artificial valve is separately arranged from the support, or the artificial valve is fixedly connected with the support.