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
- 210000003709 heart valve Anatomy 0.000 title claims abstract description 105
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 155
- 210000005069 ears Anatomy 0.000 claims abstract description 99
- 239000008280 blood Substances 0.000 claims abstract description 64
- 210000004369 blood Anatomy 0.000 claims abstract description 64
- 230000017531 blood circulation Effects 0.000 claims abstract description 55
- 230000004323 axial length Effects 0.000 claims abstract description 24
- 230000002441 reversible effect Effects 0.000 claims abstract description 19
- 238000006073 displacement reaction Methods 0.000 claims abstract description 8
- 210000001765 aortic valve Anatomy 0.000 claims abstract description 7
- 230000013011 mating Effects 0.000 claims description 15
- 230000009471 action Effects 0.000 claims description 12
- 238000013519 translation Methods 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 10
- 230000002950 deficient Effects 0.000 claims description 9
- 238000013461 design Methods 0.000 abstract description 17
- 206010067171 Regurgitation Diseases 0.000 abstract description 5
- 230000004044 response Effects 0.000 abstract description 2
- 239000012530 fluid Substances 0.000 abstract 1
- 238000009958 sewing Methods 0.000 description 10
- 230000007704 transition Effects 0.000 description 9
- 238000005086 pumping Methods 0.000 description 8
- 208000007536 Thrombosis Diseases 0.000 description 6
- 238000009434 installation Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 5
- 206010053567 Coagulopathies Diseases 0.000 description 4
- 230000035602 clotting Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 210000004115 mitral valve Anatomy 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 201000009032 substance abuse Diseases 0.000 description 2
- ZPEZUAAEBBHXBT-WCCKRBBISA-N (2s)-2-amino-3-methylbutanoic acid;2-amino-3-methylbutanoic acid Chemical compound CC(C)C(N)C(O)=O.CC(C)[C@H](N)C(O)=O ZPEZUAAEBBHXBT-WCCKRBBISA-N 0.000 description 1
- 206010018910 Haemolysis Diseases 0.000 description 1
- 241001536563 Panus Species 0.000 description 1
- 241001495413 Rattus tanezumi Species 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000000747 cardiac effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000003292 diminished effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 230000000004 hemodynamic effect Effects 0.000 description 1
- 230000008588 hemolysis Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001453 nonthrombogenic effect Effects 0.000 description 1
- 230000037361 pathway Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000002296 pyrolytic carbon Substances 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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
Landscapes
- Health & Medical Sciences (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Prostheses (AREA)
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 |
|---|---|---|---|
| US441,809 | 1995-05-16 | ||
| US08/441,809 US5772694A (en) | 1995-05-16 | 1995-05-16 | Prosthetic heart valve with improved blood flow |
| US08/441,791 US5545216A (en) | 1995-05-16 | 1995-05-16 | Prosthetic heart valve |
| US441,791 | 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 |