DE19532973C1 - Prosthesis for replacing heart valve - Google Patents
Prosthesis for replacing heart valveInfo
- Publication number
- DE19532973C1 DE19532973C1 DE1995132973 DE19532973A DE19532973C1 DE 19532973 C1 DE19532973 C1 DE 19532973C1 DE 1995132973 DE1995132973 DE 1995132973 DE 19532973 A DE19532973 A DE 19532973A DE 19532973 C1 DE19532973 C1 DE 19532973C1
- Authority
- DE
- Germany
- Prior art keywords
- ring
- tripod
- ring plane
- sections
- flow
- 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 - Fee Related
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
Abstract
Description
Die Erfindung betrifft eine zum Ersatz von natürlichen Herzklappen dienende Herzklappenprothese mit den Merkmalen des Oberbegriffs des Anspruchs 1.The invention relates to a replacement for natural Heart valve serving heart valve prosthesis with the features the preamble of claim 1.
Die gattungsgemäße aus der EP 0 173 723 B1 bekannte Herz klappenprothese hat den Vorteil, daß der zentral fließende Hauptstrom bei gleicher Umströmung der Klappenhinterwand und der Achsenlager maximiert wird. Als noch nicht völlig zufriedenstellend gelöst hat hat sich jedoch das Verhalten der Flügelklappen bei dem Öffnen und Schließen erwiesen. Entsprechendes gilt für die ähnlich aufgebaute, aus der US 4 820 299 bekannte Herzklappenprothese. The generic heart known from EP 0 173 723 B1 valve prosthesis has the advantage that the centrally flowing Main flow with the same flow around the flap rear wall and the axle bearing is maximized. As not yet complete However, the behavior has resolved satisfactorily of the wing flaps during opening and closing. The same applies to the similarly constructed, from the US 4,820,299 known heart valve prosthesis.
Aus der US 4 114 202 ist eine Dreiflügelklappe bekannt, deren in Strömungsrichtung weisende Flächen in der ge schlossenen Stellung eine im wesentlichen in der durch die Schwenkachsen aufgespannten Ringebene liegen.A three-leaf flap is known from US 4 114 202, whose surfaces pointing in the direction of flow in the ge closed position essentially in the by the Swing axes spanned the ring plane.
Der Erfindung liegt die Aufgabe zugrunde, die gattungs gemäße Klappe dahingehend weiterzubilden, daß eine schnel le Öffnung und Schließung während der Systole bzw. der Diastole gewährleistet sind.The invention has for its object the genus according flap to develop that a quick le opening and closing during systole and Diastoles are guaranteed.
Erfindungsgemäß wird diese Aufgabe durch die Merkmale des Anspruchs 1 gelöst; der Anspruch 2 gibt eine bevorzugte Ausgestaltung an.According to the invention, this object is achieved through the features of Claim 1 solved; claim 2 gives a preferred Design.
Die Erfindung wird im folgenden anhand einer Zeichnung erläutert. Dabei zeigt:The invention is described below with reference to a drawing explained. It shows:
Fig. 1 eine Draufsicht auf die Herzklappenprothese bei geschlossenen Klappen, Fig. 1 is a plan view of the heart valve prosthesis with closed flap,
Fig. 2 eine Draufsicht auf die Herzklappenprothese bei geöffneten Zustand, Fig. 2 is a plan view of the prosthetic heart valve at the open state,
Fig. 3 einen Schnitt entlang der Linie III-III von Fig. 1, und Fig. 3 is a section along the line III-III of Fig. 1, and
Fig. 4 einen Schnitt durch die Herzklappe in dem in Fig. 2 gezeigten Zustand entlang der Linie IV-IV. Fig. 4 shows a section through the heart valve in the state shown in Fig. 2 along the line IV-IV.
Die in Fig. 1 in einer Draufsicht gezeigte Prothese zum Ersatz der Herzklappen ist mit einem Klappenring 10 verse hen, dessen Radius mit R angegeben ist. In dem Klappenring 10 sind drei Flügelklappen 12, 14, 16 um jeweils eine in der Ringebene verlaufende Schwenkachse 18 gelagert. Der Abstand der Schwenkachse zum Mittelpunkt der Ringebene hat in der Projektion auf die Ringebene einen Abstand von 0,5 R bis 0,9 R. In geschlossenem Zustand schließen die Flü gelklappen 12, 14, 16 mit ihrem gebogenen Teil bündig mit der Ringbegrenzung ab. Dabei stoßen die an ihren geraden Begrenzungen bündig an die ihnen benachbarten Flügelklap pen 12, 14, 16 an und bilden mit diesen ein Dreibein.The prosthesis shown in Fig. 1 in a plan view for replacing the heart valves is hen with a valve ring 10 verses, the radius of which is indicated by R. In the flap ring 10 , three wing flaps 12 , 14 , 16 are each mounted about a pivot axis 18 running in the ring plane. The distance from the pivot axis to the center of the ring plane has a distance of 0.5 R to 0.9 R in the projection onto the ring plane. In the closed state, the wing flaps 12 , 14 , 16 with their bent part are flush with the ring boundary. The abut at their straight boundaries flush with the neighboring flaps 12 , 14 , 16 and form a tripod with them.
Der Klappenring 10, der die Achse 18 der Flügel aufnimmt und mit einem Saum zum Einnähen in die Aorta versehen ist, kann kreisförmig sein oder aber auch eine der Anato mie entsprechende, einem Dreieck angenäherte Form haben.The flap ring 10 , which receives the axis 18 of the wing and is provided with a seam for sewing into the aorta, can be circular or also have a shape corresponding to the anatomy, approximating a triangle.
Die Darstellung von Fig. 2, in der die Klappen geöffnet sind, zeigt, daß ein großer zentraler Strom gegeben ist, der von konvexen Berandungen der Flügel begrenzt wird. Der große Querschnitt des von den Innenflächen der Flügelklap pen 12, 14, 16 ,begrenzten Raumes erlaubt eine hohe Steue rungsgeschwindigkeit des Hauptstroms. Die Strömungsgra dienten im Hauptstrom HS und den drei Nebenströmungen NS1, NS2, NS3 außerhalb der Flügelklappen 12, 14, 16 sind mini miert. Die konkaven Berandungen der Außenflächen der Flü gelklappen bewirken die Ausspülung der ihnen am nächsten liegenden Bulben (Fig. 3 und 4).The representation of Fig. 2, in which the flaps are open, shows that there is a large central flow, which is limited by convex edges of the wings. The large cross-section of the space delimited by the inner surfaces of the flaps 12 , 14 , 16 allows a high control speed of the main flow. The flow graphs served in the main flow HS and the three secondary flows NS1, NS2, NS3 outside the wing flaps 12 , 14 , 16 are minimized. The concave edges of the outer surfaces of the wing flaps cause the bulbs closest to them to be flushed out (FIGS . 3 and 4).
Der Klappenring 10 ist in der Ringebene geschwungen derart ausgestaltet, daß er der Anatomie der Einbauumgebung wei testgehend entspricht. Im Bereich der Lagerung der Achsen 18 ist der Klappenring 10 hochgezogen, um den Lagern 18 die nötige Stabilität zu geben und einen Anschlag für die Flügelklappen 12, 14, 16 in deren geöffneten Zustand zu bilden. The valve ring 10 is curved in the ring plane so that it corresponds to the anatomy of the installation environment white test. In the area of the mounting of the axles 18 , the flap ring 10 is pulled up in order to give the bearings 18 the necessary stability and to form a stop for the wing flaps 12 , 14 , 16 in their open state.
Um das Öffnungs- und Schließverhalten der Flügelklappen zu verbessern, sind die Flügelklappen 12, 14, 16 derart ge formt, daß das von diesen im geschlossenen Zustand durch deren aneinander anliegenden spitz zulaufende Abschnitte gebildete Dreibein in oder gar unter der gedachten durch die Schwenkachsen 18 aufgespannten Ebene liegt. Diese Aus gestaltung bewirkt, daß die großen, nach innen weisenden Abschnitte der Flügelklappen 12, 14, 16 bei dem Öffnen re lativ lange von dem Blutstrom großflächig angeströmt wer den. Bei dem Schließen der Flügelklappen 12, 14, 16 wirkt sich günstig aus, daß die von dem rückfließenden Blut an geströmte Fläche gegenüber der Achse 18 nach innen ver setzt ist, wodurch ein größeres Schließmoment erreicht wird. Der kleinere, gebogene Abschnitt wird erst relativ spät zu einem Zeitpunkt, wo die großen gebogenen Flügelab schnitte bereits ganz überwiegend von dem zurückfließenden Blut beaufschlagt werden, gegen das durch den Nebenstrom weg strömende Blut gestellt.In order to improve the opening and closing behavior of the wing flaps, the wing flaps 12 , 14 , 16 are formed such that the tripod formed by them in the closed state by their abutting tapered sections is stretched in or even below the imaginary by the pivot axes 18 Level lies. From this design causes the large, inwardly facing sections of the wing flaps 12 , 14 , 16 to flow relatively large flow from the blood stream when opening who the. When closing the wing flaps 12 , 14 , 16 has a favorable effect that the surface flowing from the back-flowing blood to the axis 18 is set ver inwards, whereby a greater closing torque is achieved. The smaller, curved section is only placed relatively late at a time when the large curved wing sections are already predominantly acted upon by the blood flowing back against the blood flowing away through the side stream.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1995132973 DE19532973C1 (en) | 1995-09-07 | 1995-09-07 | Prosthesis for replacing heart valve |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1995132973 DE19532973C1 (en) | 1995-09-07 | 1995-09-07 | Prosthesis for replacing heart valve |
Publications (1)
Publication Number | Publication Date |
---|---|
DE19532973C1 true DE19532973C1 (en) | 1996-11-07 |
Family
ID=7771451
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1995132973 Expired - Fee Related DE19532973C1 (en) | 1995-09-07 | 1995-09-07 | Prosthesis for replacing heart valve |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE19532973C1 (en) |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1998002115A1 (en) | 1996-07-11 | 1998-01-22 | Tricumed Gmbh | Heart valve prosthesis |
US6296663B1 (en) * | 1995-03-29 | 2001-10-02 | Medical Cv, Inc. | Bileaflet heart valve having open channel and swivel pivots |
US7597711B2 (en) * | 2004-01-26 | 2009-10-06 | Arbor Surgical Technologies, Inc. | Heart valve assembly with slidable coupling connections |
US7717955B2 (en) | 2005-02-28 | 2010-05-18 | Medtronic, Inc. | Conformable prosthesis for implanting two-piece heart valves and methods for using them |
US7951197B2 (en) | 2005-04-08 | 2011-05-31 | Medtronic, Inc. | Two-piece prosthetic valves with snap-in connection and methods for use |
US7959674B2 (en) | 2002-07-16 | 2011-06-14 | Medtronic, Inc. | Suture locking assembly and method of use |
US7967857B2 (en) | 2006-01-27 | 2011-06-28 | Medtronic, Inc. | Gasket with spring collar for prosthetic heart valves and methods for making and using them |
US7972377B2 (en) | 2001-12-27 | 2011-07-05 | Medtronic, Inc. | Bioprosthetic heart valve |
US8021421B2 (en) | 2003-08-22 | 2011-09-20 | Medtronic, Inc. | Prosthesis heart valve fixturing device |
US8025695B2 (en) | 2002-12-20 | 2011-09-27 | Medtronic, Inc. | Biologically implantable heart valve system |
US8083793B2 (en) | 2005-02-28 | 2011-12-27 | Medtronic, Inc. | Two piece heart valves including multiple lobe valves and methods for implanting them |
US8211169B2 (en) | 2005-05-27 | 2012-07-03 | Medtronic, Inc. | Gasket with collar for prosthetic heart valves and methods for using them |
US8603161B2 (en) | 2003-10-08 | 2013-12-10 | Medtronic, Inc. | Attachment device and methods of using the same |
US8821569B2 (en) | 2006-04-29 | 2014-09-02 | Medtronic, Inc. | Multiple component prosthetic heart valve assemblies and methods for delivering them |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4114202A (en) * | 1977-01-28 | 1978-09-19 | Roy Henry A | Prosthetic valve assembly for use in cardiovascular surgery |
US4820299A (en) * | 1985-09-23 | 1989-04-11 | Avions Marcel Dassault-Breguet Aviation | Prosthetic cardiac valve |
EP0173723B1 (en) * | 1984-03-09 | 1989-10-11 | SIEVERS, Hans-Hinrich, Dr. | Prosthesis for replacing aortic valves |
EP0403649A1 (en) * | 1988-12-14 | 1990-12-27 | Aleksandr Petrovich Melnikov | Heart valve prosthesis |
-
1995
- 1995-09-07 DE DE1995132973 patent/DE19532973C1/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4114202A (en) * | 1977-01-28 | 1978-09-19 | Roy Henry A | Prosthetic valve assembly for use in cardiovascular surgery |
EP0173723B1 (en) * | 1984-03-09 | 1989-10-11 | SIEVERS, Hans-Hinrich, Dr. | Prosthesis for replacing aortic valves |
US4820299A (en) * | 1985-09-23 | 1989-04-11 | Avions Marcel Dassault-Breguet Aviation | Prosthetic cardiac valve |
EP0403649A1 (en) * | 1988-12-14 | 1990-12-27 | Aleksandr Petrovich Melnikov | Heart valve prosthesis |
Cited By (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6296663B1 (en) * | 1995-03-29 | 2001-10-02 | Medical Cv, Inc. | Bileaflet heart valve having open channel and swivel pivots |
DE19627859C1 (en) * | 1996-07-11 | 1998-04-16 | Tricumed Medizintechnik Gmbh | Heart valve prosthesis |
WO1998002115A1 (en) | 1996-07-11 | 1998-01-22 | Tricumed Gmbh | Heart valve prosthesis |
US7972377B2 (en) | 2001-12-27 | 2011-07-05 | Medtronic, Inc. | Bioprosthetic heart valve |
US7959674B2 (en) | 2002-07-16 | 2011-06-14 | Medtronic, Inc. | Suture locking assembly and method of use |
US8349003B2 (en) | 2002-07-16 | 2013-01-08 | Medtronic, Inc. | Suture locking assembly and method of use |
US8623080B2 (en) | 2002-12-20 | 2014-01-07 | Medtronic, Inc. | Biologically implantable prosthesis and methods of using the same |
US8025695B2 (en) | 2002-12-20 | 2011-09-27 | Medtronic, Inc. | Biologically implantable heart valve system |
US10595991B2 (en) | 2002-12-20 | 2020-03-24 | Medtronic, Inc. | Heart valve assemblies |
US9333078B2 (en) | 2002-12-20 | 2016-05-10 | Medtronic, Inc. | Heart valve assemblies |
US8021421B2 (en) | 2003-08-22 | 2011-09-20 | Medtronic, Inc. | Prosthesis heart valve fixturing device |
US8747463B2 (en) | 2003-08-22 | 2014-06-10 | Medtronic, Inc. | Methods of using a prosthesis fixturing device |
US8603161B2 (en) | 2003-10-08 | 2013-12-10 | Medtronic, Inc. | Attachment device and methods of using the same |
US10675149B2 (en) | 2004-01-26 | 2020-06-09 | Medtronic, Inc. | Heart valve assemblies |
US9474601B2 (en) | 2004-01-26 | 2016-10-25 | Medtronic, Inc. | Heart valve assemblies and methods for using them |
US8377119B2 (en) | 2004-01-26 | 2013-02-19 | Medtronic, Inc. | Heart valve assemblies |
US7597711B2 (en) * | 2004-01-26 | 2009-10-06 | Arbor Surgical Technologies, Inc. | Heart valve assembly with slidable coupling connections |
US8163014B2 (en) | 2005-02-28 | 2012-04-24 | Medtronic, Inc. | Conformable prostheses for implanting two-piece heart valves and methods for using them |
US7717955B2 (en) | 2005-02-28 | 2010-05-18 | Medtronic, Inc. | Conformable prosthesis for implanting two-piece heart valves and methods for using them |
US9402719B2 (en) | 2005-02-28 | 2016-08-02 | Medtronic, Inc. | Conformable prostheses for implanting two-piece heart valves and methods for using them |
US10226331B2 (en) | 2005-02-28 | 2019-03-12 | Medtronic, Inc. | Conformable prostheses for implanting two-piece heart valves and methods for using them |
US8083793B2 (en) | 2005-02-28 | 2011-12-27 | Medtronic, Inc. | Two piece heart valves including multiple lobe valves and methods for implanting them |
US8500802B2 (en) | 2005-04-08 | 2013-08-06 | Medtronic, Inc. | Two-piece prosthetic valves with snap-in connection and methods for use |
US7951197B2 (en) | 2005-04-08 | 2011-05-31 | Medtronic, Inc. | Two-piece prosthetic valves with snap-in connection and methods for use |
US8211169B2 (en) | 2005-05-27 | 2012-07-03 | Medtronic, Inc. | Gasket with collar for prosthetic heart valves and methods for using them |
US7967857B2 (en) | 2006-01-27 | 2011-06-28 | Medtronic, Inc. | Gasket with spring collar for prosthetic heart valves and methods for making and using them |
US8821569B2 (en) | 2006-04-29 | 2014-09-02 | Medtronic, Inc. | Multiple component prosthetic heart valve assemblies and methods for delivering them |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8100 | Publication of the examined application without publication of unexamined application | ||
D1 | Grant (no unexamined application published) patent law 81 | ||
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |