DE19532973C1 - Prosthesis for replacing heart valve - Google Patents

Prosthesis for replacing heart valve

Info

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
Application number
DE1995132973
Other languages
German (de)
Inventor
Karl-Heinz Otto
Hans-Heinrich Prof Dr Sievers
Gerd Prof Pfister
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tricumed Medizintechnik GmbH
Original Assignee
Tricumed Medizintechnik GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tricumed Medizintechnik GmbH filed Critical Tricumed Medizintechnik GmbH
Priority to DE1995132973 priority Critical patent/DE19532973C1/en
Application granted granted Critical
Publication of DE19532973C1 publication Critical patent/DE19532973C1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/24Heart 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
    • A61F2/2403Heart 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

The axes (18) in the projection over the ring plane have a distance of 0.5 R to 0.9 R from the centre of the ring plane. The vane flaps (12,14,16) in the closed state connect with their outer sections with the upper surface of the flap ring (10) when viewed in the flow direction. The inwardly facing sections running to a point forming a tripod locate at the edges of the corresp. sections of the other vane flaps. The surfaces of the vane flaps facing in the flow direction are formed with curvature radii continuously increasing from outwards to inwards. The area lies around the centre point of the tripod in or beneath the ring plane.

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)

1. Prothese zum Ersatz der Herzklappen, mit einem Klappenring (10), dessen Radius R beträgt, in dem drei Flügelklappen (12, 14, 16) um jeweils eine in der Ringebene liegende Achse (18) drehbar gelagert sind, wobei die Achsen (18) in der Projektion auf die Ring­ ebene von dem Zentrum der Ringebene einen Abstand von 0,5 R bis 0,9 R haben und die Flügelklappen (12, 14, 16) im geschlossenen Zustand mit ihren außenliegenden Abschnitten bündig mit der in Strömungsrichtung gese­ hen oberen Fläche des Klappenrings (10) abschließen und die Kanten der nach innen weisenden spitz zulau­ fenden Abschnitte unter Bildung eines Dreibeins bündig an den Kanten der entsprechenden Abschnitten der ande­ ren Flügelklappen (12, 14, 16) anliegen, dadurch gekennzeichnet, daß die in Strömungsrichtung weisenden Flächen der Flügel­ klappen (12, 14, 16) mit von außen nach innen konti­ nuierlich zunehmendem Krümmungsradius gewölbt ausge­ bildet sind, wobei der Bereich um den Mittelpunkt des Dreibeins in oder - in Strömungsrichtung gesehen - unterhalb der Ringebene liegt. 1. prosthesis for replacement of the heart valves, with a valve ring ( 10 ), the radius of which is R, in which three wing valves ( 12 , 14 , 16 ) are rotatably mounted about an axis ( 18 ) lying in the ring plane, the axes ( 18 ) in the projection onto the ring plane from the center of the ring plane have a distance of 0.5 R to 0.9 R and the wing flaps ( 12 , 14 , 16 ) in the closed state with their outer sections flush with the one seen in the direction of flow Hen top surface of the flap ring ( 10 ) complete and the edges of the inwardly pointing tapered sections form a tripod flush against the edges of the corresponding sections of the other wing flaps ( 12 , 14 , 16 ), characterized in that the in Surfaces of the wings pointing in the direction of the flow flap ( 12 , 14 , 16 ) are formed with a continuously increasing radius of curvature from the outside inwards, the area around the center point of the tripod in or - seen in the direction of flow - is below the ring plane. 2. Prothese nach Anspruch 1, dadurch gekennzeichnet, daß der Bereich um den Mittelpunkt des Dreibeins eine Ebene bildet.2. Prosthesis according to claim 1, characterized in that that the area around the center of the tripod is a Level forms.
DE1995132973 1995-09-07 1995-09-07 Prosthesis for replacing heart valve Expired - Fee Related DE19532973C1 (en)

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

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Cited By (14)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (4)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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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