CN113813085B - Medical artificial valve assembly - Google Patents

Medical artificial valve assembly Download PDF

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Publication number
CN113813085B
CN113813085B CN202111107351.9A CN202111107351A CN113813085B CN 113813085 B CN113813085 B CN 113813085B CN 202111107351 A CN202111107351 A CN 202111107351A CN 113813085 B CN113813085 B CN 113813085B
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CN
China
Prior art keywords
valve
frame
bracket
valve assembly
positioning
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Active
Application number
CN202111107351.9A
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Chinese (zh)
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CN113813085A (en
Inventor
彭博
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Fuwai Hospital of CAMS and PUMC
Fuwai Yunnan Cardiovascular Hospital
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Fuwai Hospital of CAMS and PUMC
Fuwai Yunnan Cardiovascular Hospital
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Application filed by Fuwai Hospital of CAMS and PUMC, Fuwai Yunnan Cardiovascular Hospital filed Critical Fuwai Hospital of CAMS and PUMC
Priority to CN202111107351.9A priority Critical patent/CN113813085B/en
Publication of CN113813085A publication Critical patent/CN113813085A/en
Priority to NL2032396A priority patent/NL2032396A/en
Application granted granted Critical
Publication of CN113813085B publication Critical patent/CN113813085B/en
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/24—Heart valves ; Vascular valves, e.g. venous valves; Heart implants, e.g. passive devices for improving the function of the native valve or the heart muscle; Transmyocardial revascularisation [TMR] devices; Valves implantable in the body
    • A61F2/2412—Heart valves ; Vascular valves, e.g. venous valves; Heart implants, e.g. passive devices for improving the function of the native valve or the heart muscle; Transmyocardial revascularisation [TMR] devices; Valves implantable in the body with soft flexible valve members, e.g. tissue valves shaped like natural valves
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/24—Heart valves ; Vascular valves, e.g. venous valves; Heart implants, e.g. passive devices for improving the function of the native valve or the heart muscle; Transmyocardial revascularisation [TMR] devices; Valves implantable in the body
    • A61F2/2403—Heart valves ; Vascular valves, e.g. venous valves; Heart implants, e.g. passive devices for improving the function of the native valve or the heart muscle; Transmyocardial revascularisation [TMR] devices; Valves implantable in the body with pivoting rigid closure members
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/24—Heart valves ; Vascular valves, e.g. venous valves; Heart implants, e.g. passive devices for improving the function of the native valve or the heart muscle; Transmyocardial revascularisation [TMR] devices; Valves implantable in the body
    • A61F2/2412—Heart valves ; Vascular valves, e.g. venous valves; Heart implants, e.g. passive devices for improving the function of the native valve or the heart muscle; Transmyocardial revascularisation [TMR] devices; Valves implantable in the body with soft flexible valve members, e.g. tissue valves shaped like natural valves
    • A61F2/2418—Scaffolds therefor, e.g. support stents
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2210/00—Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2210/009—Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof magnetic
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change

Abstract

The invention relates to the field of medical appliances, and particularly discloses a medical artificial valve assembly which comprises a bracket, a valve frame and two valve leaves; the support is of an elastic tubular structure, can be compressed and deformed along the axial direction when receiving radial acting force, and returns to the original state after the radial acting force disappears; the valve frame is of an elastic annular structure or an elastic tubular structure, is coaxially fixed in the bracket and can be compressed and deformed together with the bracket, and a blood flow channel is arranged in the middle of the valve frame; the two valve leaves are of hard sheet structures, the two valve leaves are detachably connected with the valve frame, and the two valve leaves can rotate in the blood flow channel after being connected with the valve frame, so that the two valve leaves can open and close the blood flow channel. The invention has the structural advantage of mechanical valve, and can be implanted in an interventional way, so as to reduce the trauma to a patient during implantation and reduce the operation risk.

Description

Medical artificial valve assembly
Technical Field
The invention relates to the field of medical instruments, in particular to a medical artificial valve assembly.
Background
Heart valves include mitral, tricuspid, aortic and pulmonary valves; taking a human mitral valve as an example, the mitral valve is a bivalve valve, which is located between the left atrium and the left ventricle; during diastole, left atrial pressure builds up due to blood filling, and as the atrial pressure increases and exceeds left ventricular pressure, the mitral valve opens, helping passive blood flow into the left ventricle; as atrial systolic diastole ends, residual blood flows from the left atrium into the left ventricle; the mitral valve closes after atrial contraction is completed to prevent reversal of blood flow back from the left ventricle to the left atrium; the mitral valve includes anterior and posterior leaflets that collectively cover an opening of the mitral valve; the opening of the mitral valve is surrounded by an annulus fibrosus, which is called the mitral valve annulus; the two leaflets are attached circumferentially to the mitral valve annulus and open and close like a ring hinge during the cardiac cycle; in a properly functioning mitral valve, the leaflets are tendinous connected to the left ventricular papillary muscles; when the left ventricle contracts, the pressure in the ventricle forces the mitral valve to close, and chordae tendineae secure the two flaps She Wenge to prevent the two leaflets from prolapsing into the left atrium, causing mitral insufficiency, and preventing valve opening and closing errors, thereby preventing blood from flowing back into the left atrium.
Valvular disease is one of common heart valvular diseases, and its causes include rheumatic, degenerative and infectious endocarditis, etc., and artificial valve replacement is a common treatment means for heart valvular disease. Prosthetic valves can be broadly divided into biological and mechanical valve structures; the biological valve is usually manufactured by treating a heart valve of human or pig or cow (also synthesized by using flexible artificial materials), and has the advantages that anticoagulant medicines are not needed to be taken for a long time after operation, the possibility of anticoagulation complications is low, the influence on daily life is also small, but the structural strength is low, the durability is poor, the use safety is low, and the service life is short (generally 10 to 15 years); the mechanical valve is mainly made of metal or pyrolytic carbon synthetic material, has higher structural strength, better durability and longer service life (can be used for life), and has higher use safety as a whole although anticoagulant medicine is needed to be taken.
For the artificial valves with the two structures, in the existing clinical practice, the mechanical valve is implanted in an open chest mode, namely, an open sternotomy is performed, an extracorporeal circulation machine is used for stopping the heart, and the mechanical artificial valve is implanted, so that the wound on a patient is large and the operation risk is high; the biological valve can be implanted in a less invasive intervention mode, as disclosed in patent CN 109009569A, the artificial mitral valve intervention replacement device and the intervention method thereof comprise a supporting body and artificial valve leaves, wherein the supporting body is made of deformable materials, the artificial valve leaves are made of biological or non-biological flexible materials, the artificial valve leaves are provided with a first end and a free end, the first end is connected with the lower edge of the supporting body, the free end is opposite to the first end, and an open configuration and a closed configuration are arranged between the artificial valve leaves; the open configuration of the diastolic prosthetic valve She Cheng, with the free ends of the individual prosthetic leaflets being spaced apart from each other and into the left ventricle to permit antegrade blood flow through the openings between the leaflets; the artificial valve blades in the systole of the left ventricle are in a closed configuration, and the free ends of the artificial valve blades move towards the left atrium direction, and are mutually closed to seal the support body, so that retrograde blood is prevented from flowing through.
As mentioned above, if the emphasis on replacing the prosthetic valve by the patient is on the life and safety of use, the mechanical valve should be given priority, but the defect of open chest implantation often becomes a barrier to the application of the mechanical valve; therefore, there is a need for a medical prosthetic valve assembly that has the structural advantages of both mechanical valves and can be implanted through an interventional approach to reduce trauma to the patient during implantation and reduce surgical risk.
Disclosure of Invention
Accordingly, the present invention is directed to a medical prosthetic valve assembly that has the structural advantages of a mechanical valve and can be implanted through an interventional approach to reduce trauma to the patient during implantation and to reduce surgical wind.
In order to achieve the above object, the present invention provides a medical prosthetic valve assembly comprising a stent, a valve frame and two valve leaflets;
the support is of an elastic tubular structure, can be compressed and deformed along the axial direction when receiving radial acting force, and returns to the original state after the radial acting force disappears;
the valve frame is of an elastic annular structure or an elastic tubular structure, is coaxially fixed in the bracket and can be compressed and deformed together with the bracket, and a blood flow channel is arranged in the middle of the valve frame;
the two valve leaves are of hard sheet structures, the two valve leaves are detachably connected with the valve frame, and the two valve leaves can rotate in the blood flow channel after being connected with the valve frame, so that the two valve leaves can open and close the blood flow channel.
As a further improvement to the technical scheme of the invention, the bracket comprises a bracket body and a coating film, wherein the bracket body is woven by adopting shape memory alloy wires and is in a net-shaped structure, and the coating film is arranged on the outer side surface of part or all of the bracket body.
As a further improvement on the technical scheme of the invention, the coating is made of terylene.
As a further improvement of the technical proposal of the invention, the bracket is provided with an anchoring piece which is used for anchoring the bracket in the body.
As a further improvement of the technical proposal of the invention, the valve frame is sewed on the bracket; the valve blades are made of pyrolytic carbon.
As a further improvement of the technical proposal of the invention, two valve leaves are rotatably connected with a leaf shaft and are connected with a valve frame through the leaf shaft.
As a further improvement to the technical scheme of the invention, two ends of the leaf shaft are respectively provided with an axial positioning groove, the positioning rods are coaxially and slidably arranged in the positioning grooves, and an elastic reset piece is arranged between the inner ends of the positioning rods and the bottoms of the positioning grooves; and a positioning hole matched with the positioning rod and used for inserting the positioning rod is formed in the valve frame.
As a further improvement to the technical scheme of the invention, the elastic reset piece is of a compression spring structure.
As a further improvement to the technical scheme of the invention, the petal frame is connected with a first developing part, the leaf shaft is connected with a second developing part, and the first developing part and the second developing part are used for developing under X rays.
As a further improvement to the technical scheme of the invention, the first developing part and the second developing part are of permanent magnet structures, the first developing part is embedded in the positioning hole, and the second developing part is arranged at the outer end of the positioning rod.
Compared with the prior art, the invention has the following beneficial technical effects:
the valve leaflet serving as the opening and closing component of the medical artificial valve component is of a hard sheet-shaped structure, and has high structural strength, so that the medical artificial valve component has the structural advantage of a mechanical valve; simultaneously, the elastic support and the elastic valve frame can be synchronously compressed, and the two valve leaves can be rotationally folded, so that each part can be implanted in an interventional mode, the trauma to a patient during implantation is effectively reduced, and the operation risk is reduced.
When the artificial mitral valve is used, the valve frame and the bracket are connected and compressed, the assembly is conveyed between the left atrium and the left ventricle of a patient through the apex of the heart, the bracket can expand the original mitral valve and fix the mitral valve on the endocardium after being released, and then the valve She Jingxin tip in a folded state is conveyed into the valve frame and connected and fixed, so that the installation of the whole artificial mitral valve assembly is completed.
It should be noted that the present medical prosthetic valve assembly may be used in a variety of heart valve replacement procedures including mitral valves.
The medical artificial valve assembly provided by the invention can be implanted into an artificial valve with a mechanical valve structure in an interventional way, which is the creative contribution of the invention, and the existing mechanical valve is implanted in an open chest way; therefore, the invention meets the social requirement, has strong practicability and is beneficial to promoting the further development of cardiovascular medical technology.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the attachment structure of the valve frame and the valve leaflet of the present invention;
FIG. 3 is a schematic view of a first connection structure of the leaflet and the leaflet shaft of the present invention;
FIG. 4 is a schematic view of a second connection of the leaflet and leaflet shaft of the present invention;
FIG. 5 is a schematic view of the structure of the leaflet of the present invention;
FIG. 6 is a schematic view of the structure of the inventive shaft.
Detailed Description
For a better understanding of the technical solution of the present invention, a further detailed description of the present invention will be provided below with reference to the drawings and to the specific examples; of course, the drawings are simplified schematic representations whose scale is not limiting on the patented products.
Examples
As shown in fig. 1 to 6: the embodiment provides a medical artificial valve assembly, which comprises a bracket 1, a valve frame 2 and two valve leaves 3. The present embodiment is exemplified by the valve assembly being applied to replacement of a mitral valve in a human body, and in fact the assembly may be applied to replacement of other valves.
The support 1 is of an elastic tubular structure, and the support 1 can be axially compressed and deformed when receiving radial acting force and can return to the original state after the radial acting force is eliminated; preferably, the bracket 1 comprises a bracket body 11 and a coating film 12, wherein the bracket body 11 is woven by shape memory alloy wires and is in a net structure, and the coating film 12 is arranged on the outer side surface of part or all of the bracket body 11; the cover film 12 can be made of terylene.
An anchor (not shown in the figure) can be further arranged on the bracket 1, and the anchor is used for anchoring the bracket 1 into a body so as to realize the positioning of the bracket 1; the shape of the anchors is not limited herein, as in patent CN104771247a, "a device and method for treating mitral regurgitation," which uses the "pinching effect" created by the atrial flange and the annulus support; the object of this embodiment is also achieved by the anchoring elements and hook structures of the "mitral valve prosthesis" patent CN107405194a, for example.
The valve frame 2 is of an elastic annular structure (or an elastic tubular structure), the valve frame 2 is coaxially fixed in the bracket 1 and can be compressed and deformed together with the bracket 1, a blood flow channel 2a is arranged in the middle of the valve frame 2, and the blood flow channel 2a is used for blood flow to pass through; the petal rack 2 can be made of rubber, for example; the valve frame 2 can be connected to the bracket 1 by a sewing mode. After assembly positioning, the valve frame 2 may be positioned at the native mitral valve annulus.
The two valve blades 3 are of hard sheet structures, the two valve blades 3 are detachably connected with the valve frame 2, and the two valve blades 3 can rotate in the blood flow channel 2a after being connected with the valve frame 2, so that the two valve blades 3 can open and close the blood flow channel 2a. The leaflet 3 can be in a shape of a D, and the principle of opening and closing the blood flow channel 2a of the leaflet 3 is the same as that of the existing mechanical valve, and is not repeated here; the leaflet 3 is preferably made of pyrolytic carbon.
The valve leaflet 3 serving as the opening and closing component of the medical artificial valve component is of a hard sheet-shaped structure, and has high structural strength, so that the medical artificial valve component has the structural advantage of a mechanical valve; simultaneously, the elastic support 1 and the elastic valve frame 2 can be synchronously compressed, and the two valve blades 3 can be rotationally folded, so that each part can be implanted in an interventional mode, the trauma to a patient during implantation is effectively reduced, and the operation risk is reduced.
When in use, the valve frame 2 and the bracket 1 can be connected and compressed firstly, then the assembly is conveyed between the left atrium and the left ventricle of a patient through the apex of the heart (in fig. 1, the upper part of the valve frame 2 is a left atrium area, the lower part of the valve frame 2 is a left ventricle area), after the release, the bracket 1 can expand the original mitral valve and fix the mitral valve on the endocardium, and then the folded valve leaves 3 are conveyed into the valve frame 2 through the apex of the heart and are connected and fixed, thus the installation of the whole artificial mitral valve assembly is completed.
In this embodiment, the leaflet 3 and the leaflet frame 2 can be connected by the following structure, for example.
The two valve leaves 3 are rotatably connected with the leaf shaft 4 and are connected with the valve frame 2 through the leaf shaft 4; the vane shaft 4 is of a circular rod structure, and the two vanes 3 are symmetrically arranged by taking the axis of the vane shaft 4 as a symmetrical axis; the straight line section of the 'D' -shaped valve leaf 3 can be outwards protruded to form a rotating shaft 31, the side surface of the leaf shaft 4 is correspondingly provided with a rotating groove 41, the rotating shaft 31 is clamped into the rotating groove 41 and can be rotatably connected, meanwhile, the rotating groove 41 can also serve as a limiting component of the rotating shaft 31, so that the rotating angle of the valve leaf 3 is limited (the opening of the valve leaf 3 is minimum in fig. 1 and 3, the blood flow channel 2a is completely closed, the opening of the valve leaf 3 is maximum in fig. 2 and 4, the two valve leaves are nearly parallel, and the blood flow channel 2a is completely opened), and the blood flow channel 2a is effectively opened and closed.
The two ends (the upper end and the lower end in fig. 6) of the blade shaft 4 are respectively provided with an axial positioning groove 42, and the positioning grooves 42 are formed by inwards sinking the end surfaces of the blade shaft 4; the positioning rods 5 are coaxially and slidably arranged in the corresponding positioning grooves 42, i.e. the two positioning rods 5 are respectively arranged corresponding to the two positioning grooves 42; an elastic reset piece 6 is arranged between the inner end of the positioning rod 5 and the bottom of the positioning groove 42; the elastic restoring member 6 is preferably a compression spring structure, two ends of which are respectively and fixedly connected to the inner end of the positioning rod 5 and the bottom of the positioning groove 42, and the elastic restoring member 6 can be compressed when the positioning rod 5 receives an axial force, so as to extend into the positioning groove 42, and when the axial force disappears, the positioning rod 5 is restored and extends out of the positioning groove 42.
A positioning hole 21 which is matched with the positioning rod 5 and used for inserting the positioning rod 5 is arranged in the valve frame 2; the two positioning holes 21 are distributed on one diameter of the valve frame 2 and can be in a through hole structure; the upper and lower end surfaces of the valve frame 2 are smooth cambered surfaces, so that when the leaf shaft 4 enters the valve frame 2 from top to bottom or from bottom to top, the positioning rod 5 contacts with the inner wall of the valve frame 2 and receives axial acting force (radial acting force is applied to the valve frame 2), and the elastic reset piece 6 can be compressed; when the positioning rod 5 is aligned with the positioning hole 21, the positioning rod 5 automatically extends into the positioning hole 21 to realize automatic locking.
Meanwhile, the valve frame 2 is connected with a first developing part 61, the blade shaft 4 is connected with a second developing part 62, and the first developing part 61 and the second developing part 62 are used for developing under X rays, so that the positions of the valve frame 2 and the blade shaft 4 in a patient can be known, and the intervention operation is convenient to carry out. Preferably, the first developing member 61 and the second developing member 62 are both of permanent magnet structures, the first developing member 61 is embedded in the positioning hole 21, the second developing member 62 is arranged at the outer end of the positioning rod 5, and the positioning rod 5 can be made of permanent magnets; the first developing member 61 and the second developing member are opposite in magnetism, so that they can attract each other when they are brought close, not only facilitating the positioning of the blade shaft 4, but also improving the connection stability of the positioning lever 5.
Finally, it is pointed out that the principles and embodiments of the invention have been described herein with reference to specific examples, which are intended to be merely illustrative of the core idea of the invention, and that several improvements and modifications can be made to the invention without departing from the principles of the invention, which also fall within the scope of protection of the invention.

Claims (10)

1. A medical prosthetic valve assembly, characterized by:
comprises a bracket, a valve frame and two valve leaves;
the support is of an elastic tubular structure, can be compressed and deformed along the axial direction when receiving radial acting force, and returns to the original state after the radial acting force disappears;
the valve frame is of an elastic annular structure or an elastic tubular structure, is coaxially fixed in the bracket and can be compressed and deformed together with the bracket, and a blood flow channel is arranged in the middle of the valve frame;
the two valve blades are of hard sheet structures and are detachably connected with the valve frame, and the two valve blades can rotate in the blood flow channel after being connected with the valve frame, so that the two valve blades can open and close the blood flow channel;
when the artificial mitral valve assembly is used, the valve frame and the support can be connected and compressed firstly, then the assembly is conveyed between the left atrium and the left ventricle of a patient through the apex of the heart, the support can expand the original mitral valve and fix the mitral valve on the endocardium after being released, and then the valve She Jingxin tip in a folded state is conveyed into the valve frame and connected and fixed, so that the installation of the whole artificial mitral valve assembly is completed.
2. The medical prosthetic valve assembly of claim 1, wherein:
the bracket comprises a bracket body and a coating film, wherein the bracket body is woven by shape memory alloy wires and is in a net-shaped structure, and the coating film is arranged on the outer side surface of part or all of the bracket body.
3. A medical prosthetic valve assembly according to claim 2, wherein:
the coating is made of terylene.
4. The medical prosthetic valve assembly of claim 1, wherein:
the support is provided with an anchoring piece which is used for anchoring the support in the body.
5. The medical prosthetic valve assembly of claim 1, wherein:
the valve frame is sewn on the bracket; the valve blades are made of pyrolytic carbon.
6. A medical prosthetic valve assembly according to any one of claims 1-5, wherein:
the two valve leaves are rotatably connected with the leaf shaft and are connected with the valve frame through the leaf shaft.
7. The medical prosthetic valve assembly of claim 6, wherein:
the two ends of the leaf shaft are respectively provided with an axial positioning groove, the positioning rods are coaxially and slidably arranged in the positioning grooves, and an elastic reset piece is arranged between the inner ends of the positioning rods and the bottoms of the positioning grooves; and a positioning hole matched with the positioning rod and used for inserting the positioning rod is formed in the valve frame.
8. The medical prosthetic valve assembly of claim 7, wherein:
the elastic reset piece is of a compression spring structure.
9. The medical prosthetic valve assembly of claim 7, wherein:
the flap frame is connected with a first developing part, the blade shaft is connected with a second developing part, and the first developing part and the second developing part are both used for developing under X rays.
10. The medical prosthetic valve assembly of claim 9, wherein:
the first developing part and the second developing part are of permanent magnet structures, the first developing part is embedded in the positioning hole, and the second developing part is arranged at the outer end of the positioning rod.
CN202111107351.9A 2021-09-22 2021-09-22 Medical artificial valve assembly Active CN113813085B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202111107351.9A CN113813085B (en) 2021-09-22 2021-09-22 Medical artificial valve assembly
NL2032396A NL2032396A (en) 2021-09-22 2022-07-06 Medical artificial valve assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111107351.9A CN113813085B (en) 2021-09-22 2021-09-22 Medical artificial valve assembly

Publications (2)

Publication Number Publication Date
CN113813085A CN113813085A (en) 2021-12-21
CN113813085B true CN113813085B (en) 2023-06-06

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NL (1) NL2032396A (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101301228B (en) * 2008-06-26 2010-10-13 上海应用技术学院 Detachable double-leaf artificial mechanism heart valves
CN102764169B (en) * 2012-04-19 2015-07-29 杭州启明医疗器械有限公司 Cardiac valve prosthesis and valve bracket thereof
EP3000437B1 (en) * 2014-09-26 2018-05-30 Nvt Ag Implantable device for treating mitral valve regurgitation
CN108451669A (en) * 2018-03-13 2018-08-28 唐杨烽 A kind of mitral valve replaces mechanical prosthetic valve on manually ring
CN111329622B (en) * 2020-03-05 2021-06-15 杭州金杭齐医疗科技有限公司 Intervention type artificial heart valve
CN215937817U (en) * 2021-09-22 2022-03-04 中国医学科学院阜外医院 Artificial valve device capable of being intervened and replaced

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CN113813085A (en) 2021-12-21

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