CA2218621C - Valvule cardiaque prothetique - Google Patents
Valvule cardiaque prothetique Download PDFInfo
- Publication number
- CA2218621C CA2218621C CA002218621A CA2218621A CA2218621C CA 2218621 C CA2218621 C CA 2218621C CA 002218621 A CA002218621 A CA 002218621A CA 2218621 A CA2218621 A CA 2218621A CA 2218621 C CA2218621 C CA 2218621C
- Authority
- CA
- Canada
- Prior art keywords
- downstream
- upstream
- valve body
- leaflets
- wall
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- 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
- A61F2/0077—Special surfaces of prostheses, e.g. for improving ingrowth
-
- 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
- A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
- A61F2310/00005—The prosthesis being constructed from a particular material
- A61F2310/00161—Carbon; Graphite
-
- 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
- A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
- A61F2310/00005—The prosthesis being constructed from a particular material
- A61F2310/00161—Carbon; Graphite
- A61F2310/00173—Graphite
-
- 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
- A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
- A61F2310/00389—The prosthesis being coated or covered with a particular material
- A61F2310/00574—Coating or prosthesis-covering structure made of carbon, e.g. of pyrocarbon
Abstract
Une prothèse de valvule cardiaque à deux valves incorpore un agencement à pivot qui minimise la résistance au flux sanguin aval en position ouverte et peut cependant réagir promptement et provoquer une régurgitation minimale en cas d'inversion du flux. Un corps de valvule, ayant une entrée à courbure axiale et de préférence de forme toroïdale qui relie en douceur un corps généralement cylindrique allongé axialement, assure un excellent écoulement du fluide lorsqu'il est associé à des valves qui peuvent occuper des orientations en alignement avec le flux sanguin aval. Un corps de valvule en pyrocarbone reçoit un anneau de suture qui permet à l'anneau tissulaire d'entrer en contact direct avec sa surface extérieure, par exemple dans une région concave de la surface toroïdale dans le cas d'une valvule aortique. Des valves plates identiques peuvent occuper une orientation parallèle en position complètement ouverte ou peuvent occuper d'autres positions requérant peu d'énergie. Des oreilles plates dépassent latéralement des valves et s'engagent dans des cavités de conception unique ayant des lobes en amont et en aval séparés par une partie intermédiaire de ventilation définie par des points d'articulation interne et externe. Les lobes en aval placent les valves suivant l'orientation ouverte parallèle et peuvent éventuellement provoquer la pré-rotation. Dès que le flux inverse se produit, le déplacement en amont des valves provoque la mise en contact des oreilles avec des surfaces à effet de came droites situées en amont des points d'articulation externes qui, en association avec les points d'articulation et une surface concave dirigée vers le bas à l'extrémité amont du lobe amont, conduisent de manière positive chaque valve à effectuer une fermeture efficace qui s'achève dans un mouvement sensiblement rotatif.
Applications Claiming Priority (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US441,791 | 1982-11-15 | ||
US08/441,791 US5545216A (en) | 1995-05-16 | 1995-05-16 | Prosthetic heart valve |
US08/441,809 US5772694A (en) | 1995-05-16 | 1995-05-16 | Prosthetic heart valve with improved blood flow |
US441,809 | 1995-05-16 | ||
US589,864 | 1996-01-23 | ||
US08/589,864 US5641324A (en) | 1995-05-16 | 1996-01-23 | Prosthetic heart valve |
PCT/US1996/006466 WO1996036299A1 (fr) | 1995-05-16 | 1996-05-07 | Valvule cardiaque prothetique |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2218621A1 CA2218621A1 (fr) | 1996-11-21 |
CA2218621C true CA2218621C (fr) | 2006-10-24 |
Family
ID=37309502
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002218621A Expired - Lifetime CA2218621C (fr) | 1995-05-16 | 1996-05-07 | Valvule cardiaque prothetique |
Country Status (1)
Country | Link |
---|---|
CA (1) | CA2218621C (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2229920A1 (fr) * | 2009-03-19 | 2010-09-22 | MedEng | Prothèse valvulaire cardiaque réimplantable |
US10182907B2 (en) | 2007-05-02 | 2019-01-22 | Novostia Sa | Mechanical prosthetic heart valve |
-
1996
- 1996-05-07 CA CA002218621A patent/CA2218621C/fr not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10182907B2 (en) | 2007-05-02 | 2019-01-22 | Novostia Sa | Mechanical prosthetic heart valve |
EP2229920A1 (fr) * | 2009-03-19 | 2010-09-22 | MedEng | Prothèse valvulaire cardiaque réimplantable |
Also Published As
Publication number | Publication date |
---|---|
CA2218621A1 (fr) | 1996-11-21 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKEX | Expiry |
Effective date: 20160509 |