EP0418361A1 - Heart valve prosthesis for replacement of the aortic valve - Google Patents

Heart valve prosthesis for replacement of the aortic valve

Info

Publication number
EP0418361A1
EP0418361A1 EP19900905421 EP90905421A EP0418361A1 EP 0418361 A1 EP0418361 A1 EP 0418361A1 EP 19900905421 EP19900905421 EP 19900905421 EP 90905421 A EP90905421 A EP 90905421A EP 0418361 A1 EP0418361 A1 EP 0418361A1
Authority
EP
European Patent Office
Prior art keywords
support ring
heart valve
aortic
commissure
valve
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.)
Withdrawn
Application number
EP19900905421
Other languages
German (de)
French (fr)
Inventor
Alexander Prof. Dr. Bernhard
Hans-Hinrich Dr. Sievers
Mehrdad Mahmoodi
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.)
SIEVERS HANS HINRICH DR
Original Assignee
SIEVERS HANS HINRICH DR
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 SIEVERS HANS HINRICH DR filed Critical SIEVERS HANS HINRICH DR
Publication of EP0418361A1 publication Critical patent/EP0418361A1/en
Withdrawn legal-status Critical Current

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
    • A61F2/2412—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

Definitions

  • the invention relates to a heart valve prosthesis for replacing the aortic valve or pulmonary valve according to the preamble of claim 1, as is known from DE 83 27 414 U1.
  • the sails of the biological heart valve preparation are attached to a wave-shaped plastic carrier.
  • the invention is therefore based on the object of providing a prosthetic heart valve of the type mentioned at the beginning, in which the location at which the commissures of the valve leaflets are anchored can move radially in accordance with the respective pressure conditions when the aorta is expanded or contracted.
  • Fig. 1 is a perspective view of such a heart valve prosthesis
  • FIG. 2 shows a central sectional view through such a heart valve prosthesis, one of the felt strips forming the commissure elements being recognizable in section on the left.
  • the heart valve prosthesis consists of a support ring 10 with a substantially constant height over the circumference.
  • a seam ring 16 is arranged on the outside around the support ring.
  • a biological heart valve preparation - preferably obtained from pork - is sewn to the aortic wall 14 'below and above the anchoring X on the support ring, while the commissures 14 *' of the biological heart valve preparation are attached to the flexible felt strips 12 are sewn on.
  • the suture ring 16 which is firmly connected to the support ring 10
  • the suture ring 16 is sewn close to the heart of the patient's aortic wall.
  • the free ends of the felt strips 12 pointing away from the support ring 10 are attached to the aortic wall of the patient. Due to the resilience of the felt strips 12 forming the commissure elements, the heart valve prosthesis according to the invention behaves approximately like the natural human heart valve: the location at which the commissures of the valve leaflets are anchored moves radially as the aorta widens or narrows Pressure ratios accordingly, which contributes to the reliable function of the valve leaflets.
  • the flow cross-section that can be achieved is larger since the anchoring points of the commissures correspondingly move outwards when the aorta is widened due to the ejection pressure.
  • a divergent flow is brought about because, unlike in the prior art, there are no rigid commissure elements. The dead spaces which form behind the commissure members in the prior art are avoided.

Landscapes

  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Cardiology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Transplantation (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 pour remplacement des sigmoïdes aortiques ou des sigmoïdes pulmonaires comprend un anneau de support (10) en plastique ou en métal, trois éléments de commissure et trois voiles formés à partir d'une préparation biologique de valvule cardiaque. Les parois aortiques des voiles disposées dans l'anneau de support (10) sont cousues, conjointement avec l'anneau de support (10) et sa paroi de commissure, aux bords des éléments de commissure. Ces derniers sont formés par des bandes (12) de feutre qui dépassent sur l'anneau de support, leurs axes étant parallèles, et qui se fixent à la paroi de l'aorte du patient.A heart valve prosthesis for replacement of aortic sigmoid or pulmonary sigmoid includes a support ring (10) of plastic or metal, three commissure elements and three webs formed from a biological preparation of heart valve. The aortic walls of the webs arranged in the support ring (10) are sewn, together with the support ring (10) and its commissure wall, at the edges of the commissure elements. The latter are formed by strips (12) of felt which protrude from the support ring, their axes being parallel, and which are fixed to the wall of the patient's aorta.

Description

Herzklappenprothese zum Ersatz der Aortenklappe Heart valve prosthesis to replace the aortic valve
Die Erfindung betrifft eine Herzklappenprothese zum Er¬ satz der Aortenklappe oder Pulmonalklappe nach dem Oberbegriff des Anspruch 1, wie sie aus der DE 83 27 414 Ul vorbekannt ist.The invention relates to a heart valve prosthesis for replacing the aortic valve or pulmonary valve according to the preamble of claim 1, as is known from DE 83 27 414 U1.
Zum Stand der Technik wird weiter auf die DE 35 41 478 AI, die DE 23 55 959 B2 und DE 36 08 435 C2 hingewie¬ sen.The state of the art is further referred to DE 35 41 478 AI, DE 23 55 959 B2 and DE 36 08 435 C2.
Bei der eingangs genannten Herzklappenprotheεe sind die Segel des biologischen Herzklappenpräparats an einen wellenförmig ausgebildeten Kunststoffträger angesetzt. Der Ort, an dem die Kommisεuren der Klappensegel folgt daher nicht der Weitung bzw. der Verengung der Aorta radial .In the heart valve prosthesis mentioned at the beginning, the sails of the biological heart valve preparation are attached to a wave-shaped plastic carrier. The location at which the commissures of the valve leaflets therefore do not follow the widening or narrowing of the aorta radially.
Der Erfindung liegt damit die Aufgabe zugrunde, eine Herzklappenprothese der eingangs genannten Art zu schaffen, bei der der Ort, an dem die Kommissuren der Klappensegel verankert sind, sich bei der Weitung bzw. Verengung der Aorta den jeweiligen Druckverhältnissen entsprechend radial bewegen kann.The invention is therefore based on the object of providing a prosthetic heart valve of the type mentioned at the beginning, in which the location at which the commissures of the valve leaflets are anchored can move radially in accordance with the respective pressure conditions when the aorta is expanded or contracted.
Erfindungsgemäß wird diese Aufgabe durch die im kenn¬ zeichnenden Teil des Anspruchs 1 angegebenen Merkmale gelöst. Die Unteransprüche geben vorteilhafte Ausge¬ staltungen der Erfindung an.According to the invention, this object is achieved by the features specified in the characterizing part of claim 1. The subclaims indicate advantageous embodiments of the invention.
Die Erfindung wird im folgenden anhand einer Zeichnung erläutert. Dabei zeigt: Fig. 1 eine perspektivische Darstellung einer solchen Herzklappenprothese, undThe invention is explained below with reference to a drawing. It shows: Fig. 1 is a perspective view of such a heart valve prosthesis, and
Fig. 2 eine MittelSchnittdarstellung durch eine solche Herzklappenprothese, wobei links einer der die Kommissurenelemente bildenden Filz¬ streifen geschnitten erkennbar ist.2 shows a central sectional view through such a heart valve prosthesis, one of the felt strips forming the commissure elements being recognizable in section on the left.
Die Herzklappenprothese besteht aus einem Stützring 10 mit über den Umfang im wesentlichen gleichbleibender Höhe. Außen um den Stützring herum ist ein Nahtring 16 angeordnet.The heart valve prosthesis consists of a support ring 10 with a substantially constant height over the circumference. A seam ring 16 is arranged on the outside around the support ring.
Auf dem Stützring 10 stehen im wesentlichen achsenpar¬ allel ausgerichtete Filzstreifen 12 auf, die mit dem Stützring 10 nicht starr, sondern frei aufstehend ver¬ bunden sind.On the support ring 10 there are essentially axially parallel felt strips 12, which are not rigidly connected to the support ring 10, but rather stand up freely.
In den Stützring 10 ist ein biologisches Herzklappen¬ präparat - vorzugsweise vom Schwein gewonnen - an deren Aortenwandung 14 ' unterhalb und oberhalb der Veranke¬ rung X an den Stützring angenäht, während die Kommissu- ren 14*' des biologischen Herzklappenpräparats an den nachgiebigen Filzstreifen 12 angenäht sind.In the support ring 10, a biological heart valve preparation - preferably obtained from pork - is sewn to the aortic wall 14 'below and above the anchoring X on the support ring, while the commissures 14 *' of the biological heart valve preparation are attached to the flexible felt strips 12 are sewn on.
Bei der Implantation der hier vorgeschlagenen Herzklap¬ penprothese wird der fest mit dem Stützring 10 verbun¬ dene Nahtring 16 an die Aortenwandung des Patienten herznah angenäht. Die freien, von dem Stützring 10 weg¬ weisenden Enden der Filzstreifen 12 werden an die Aor¬ tenwandung des Patienten angeheftet. Aufgrund der Nachgiebigkeit der die Kommissurelemente bildenden Filzstreifen 12 verhält sich die Herzklappen¬ prothese nach der Erfindung etwa wie die natürliche menschliche Herzklappe: Der Ort, an dem die Kommissuren der Klappensegel verankert sind, bewegt sich bei der Weitung bzw. Verengung der Aorta radial den jeweiligen Druckverhältniεsen entsprechend, was zur zuverlässigen Funktion der Klappensegel beiträgt. Der erreichbare Strömungεquerεchnitt iεt größer, da bei einer Weitung der Aorta aufgrund deε Auεεtoßdrucks sich die Veranke¬ rungspunkte der Kommissuren entsprechend nach außen be¬ wegen. Es wird so - wie bei der natürlichen Klappe - ein divergenter Fluß bewirkt, da, anders als bei dem Stand der Technik - keine starren Kommissurelemente vorhanden sind. Die sich bei dem Stand der Technik hin¬ ter den Kommissurelernenten bildenden Toträume werden vermieden. When the heart valve prosthesis proposed here is implanted, the suture ring 16, which is firmly connected to the support ring 10, is sewn close to the heart of the patient's aortic wall. The free ends of the felt strips 12 pointing away from the support ring 10 are attached to the aortic wall of the patient. Due to the resilience of the felt strips 12 forming the commissure elements, the heart valve prosthesis according to the invention behaves approximately like the natural human heart valve: the location at which the commissures of the valve leaflets are anchored moves radially as the aorta widens or narrows Pressure ratios accordingly, which contributes to the reliable function of the valve leaflets. The flow cross-section that can be achieved is larger since the anchoring points of the commissures correspondingly move outwards when the aorta is widened due to the ejection pressure. As with the natural flap, a divergent flow is brought about because, unlike in the prior art, there are no rigid commissure elements. The dead spaces which form behind the commissure members in the prior art are avoided.

Claims

ANSPRÜCHE EXPECTATIONS
1. Herzklappenprothese zum Ersatz der Aortenklappe oder Pulmonalklappe mit einem aus Kunststoff oder Me¬ tall bestehenden Stützring (10), drei Kommissurelemen- ten (12) und drei durch ein biologisches Herzklappen¬ präparat gebildeten Segeln (14), deren im Stützring (10) angeordnete Aortenwandung (14') mit dem Stützring (10) und deren Kommissurenwand (14'') an den Rändern der Kommissurelemente (12) angenäht sind,1. Heart valve prosthesis for replacing the aortic valve or pulmonary valve with a support ring (10) made of plastic or metal, three commissure elements (12) and three sails (14) formed by a biological heart valve preparation, the sails (14) of which in the support ring (10) arranged aortic wall (14 ') with the support ring (10) and its commissure wall (14' ') are sewn onto the edges of the commissure elements (12),
dadurch gekennzeichnet, daßcharacterized in that
die Kommisεurelemente (12) durch auf dem Stützring (10) achsparallel ausgerichtete und frei aufstehende Strei¬ fen aus Filz gebildet sind, die an die Aortenwand deε Patienten anheftbar sind.the commissure elements (12) are formed by strips of felt, which are aligned axially parallel on the support ring (10) and stand up, and which can be attached to the aortic wall of the patient.
2. Herzklappenprothese nach Anspruch 1, dadurch ge¬ kennzeichnet, daß die Aortenwandung (14') der Segel (14) unterhalb und oberhalb der Verankerung (X) der Se¬ gel (14) an der Aortenwandung (14') des am Stützring (10) angenäht sind. 2. Heart valve prosthesis according to claim 1, characterized ge indicates that the aortic wall (14 ') of the sail (14) below and above the anchorage (X) of the Se¬ gel (14) on the aortic wall (14') of the support ring ( 10) are sewn on.
EP19900905421 1989-04-05 1990-04-04 Heart valve prosthesis for replacement of the aortic valve Withdrawn EP0418361A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19893910971 DE3910971C1 (en) 1989-04-05 1989-04-05
DE3910971 1989-04-05

Publications (1)

Publication Number Publication Date
EP0418361A1 true EP0418361A1 (en) 1991-03-27

Family

ID=6377890

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900905421 Withdrawn EP0418361A1 (en) 1989-04-05 1990-04-04 Heart valve prosthesis for replacement of the aortic valve

Country Status (3)

Country Link
EP (1) EP0418361A1 (en)
DE (1) DE3910971C1 (en)
WO (1) WO1990011738A1 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995028899A1 (en) * 1994-04-22 1995-11-02 Medtronic, Inc. Stented bioprosthetic heart valve
US7722667B1 (en) * 1998-04-20 2010-05-25 St. Jude Medical, Inc. Two piece bioprosthetic heart valve with matching outer frame and inner valve
US6558418B2 (en) 1999-01-26 2003-05-06 Edwards Lifesciences Corporation Flexible heart valve
US6736845B2 (en) 1999-01-26 2004-05-18 Edwards Lifesciences Corporation Holder for flexible heart valve
US6454799B1 (en) 2000-04-06 2002-09-24 Edwards Lifesciences Corporation Minimally-invasive heart valves and methods of use
US6461382B1 (en) 2000-09-22 2002-10-08 Edwards Lifesciences Corporation Flexible heart valve having moveable commissures
US6893460B2 (en) 2001-10-11 2005-05-17 Percutaneous Valve Technologies Inc. Implantable prosthetic valve
US7189258B2 (en) 2002-01-02 2007-03-13 Medtronic, Inc. Heart valve system
US7033390B2 (en) 2002-01-02 2006-04-25 Medtronic, Inc. Prosthetic heart valve system
US8062359B2 (en) 2005-04-06 2011-11-22 Edwards Lifesciences Corporation Highly flexible heart valve connecting band
US8273118B2 (en) 2007-09-17 2012-09-25 Medtronic, Inc. Heart valve holder assembly for use in valve implantation procedures

Family Cites Families (8)

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Publication number Priority date Publication date Assignee Title
GB1315845A (en) * 1970-05-12 1973-05-02 Nat Res Dev Prosthetic cardiac valve
US3755823A (en) * 1971-04-23 1973-09-04 Hancock Laboratories Inc Flexible stent for heart valve
RO78309A2 (en) * 1981-02-04 1983-02-01 Spitalul Clinic,Ro CARDIAC VALVULAR BIOPROTHESIS AND METHOD OF MAKING THE SAME
DE8327414U1 (en) * 1983-09-23 1984-02-02 Reichart, Bruno, Prof. Dr. HEART VALVE PROSTHESIS
DE3541478A1 (en) * 1985-11-23 1987-05-27 Beiersdorf Ag HEART VALVE PROSTHESIS AND METHOD FOR THE PRODUCTION THEREOF
FR2591100B1 (en) * 1985-12-09 1990-08-17 Clinique Residence Parc TRICUSPID VALVULAR PROSTHESIS.
CH672247A5 (en) * 1986-03-06 1989-11-15 Mo Vysshee Tekhnicheskoe Uchil
US4725274A (en) * 1986-10-24 1988-02-16 Baxter Travenol Laboratories, Inc. Prosthetic heart valve

Non-Patent Citations (1)

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Title
See references of WO9011738A1 *

Also Published As

Publication number Publication date
WO1990011738A1 (en) 1990-10-18
DE3910971C1 (en) 1990-08-23

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