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1. WO1992016169 - IMPROVED PROSTHETIC HEART VALVE

Publication Number WO/1992/016169
Publication Date 01.10.1992
International Application No. PCT/US1992/001732
International Filing Date 03.03.1992
Chapter 2 Demand Filed 09.10.1992
IPC
A61F 2/24 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
FFILTERS 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
2Filters 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
02Prostheses implantable into the body
24Heart valves
CPC
A61F 2/2403
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
FFILTERS 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
2Filters 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
02Prostheses implantable into the body
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
2403with pivoting rigid closure members
A61F 2/2409
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
FFILTERS 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
2Filters 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
02Prostheses implantable into the body
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
2409Support rings therefor, e.g. for connecting valves to tissue
Y10T 137/7875
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
10TECHNICAL SUBJECTS COVERED BY FORMER USPC
TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
137Fluid handling
7722Line condition change responsive valves
7837Direct response valves [i.e., check valve type]
7869Biased open
7875Pivoted valves
Y10T 137/7898
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
10TECHNICAL SUBJECTS COVERED BY FORMER USPC
TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
137Fluid handling
7722Line condition change responsive valves
7837Direct response valves [i.e., check valve type]
7898Pivoted valves
Applicants
  • ONX, INC. [US]/[US]
Inventors
  • STUPKA, Jonathan, C.
  • BOKROS, Jack, C.
  • EMKEN, Michael, R.
  • HAUBOLD, Axel, D.
  • PETERS, T., Scott
Agents
  • WATT, Phillip, H.
Priority Data
674,87125.03.1991US
837,76118.02.1992US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) IMPROVED PROSTHETIC HEART VALVE
(FR) PROTHESE DE VALVULE CARDIAQUE AMELIOREE
Abstract
(EN)
Heart valves (301), particularly those having two identical leaflets (305), are shown which utilize improved pivot arrangements that create prompt response to flow reversal and minimize impact at the instant of closing. Illustrated are valves having pairs of leaflets (305) that can assume an orientation in the fully open position that is precisely parallel to the centerline of the passageway, yet which will promptly respond upon blood flow reversal and quickly close to prevent substantial regurgitation. The ability of the leaflets to assume a precisely parallel or low energy position in the bloodstream reduces pressure drop across the valve and results in improved flow characteristics. Prompt closing pivoting movement from a parallel orientation is effected by creating a camming action adjacent the upstream edges (371) of the leaflets or close thereto while positively guiding the overall path of leaflet translation and rotation by interengagement at other locations (359, 327) spaced downstream therefrom. The pivot arrangements are particularly effective to positively guide the leaflets to assure effective closing movement regardless of momentary deviations in the dynamics of the reverse flow of blood through the valve.
(FR)
L'invention se rapporte à des prothèses de valvules cardiaques (301), en particulier du type comprenant deux valves ou membranes identiques (305), qui utilisent des agencements pivotants améliorés pour créer une réponse rapide à l'inversion du flux et pour réduire au minimum les impacts au moment de la fermeture. Sont ici illustrées des valvules comportant des paires de membranes (305) qui peuvent occuper une orientation dans la position entièrement ouverte qui est exactement parallèle à la ligne médiane du passage, et qui cependant peuvent réagir rapidement à l'inversion du flux sanguin et se fermer rapidement pour prévenir toute régurgitation importante. La capacité des membranes à occuper une position exactement parallèle ou à faible utilisation d'énergie dans la circulation sanguine entraîne une réduction de la chute de pression dans la valvule et produit une amélioration des caractéristiques d'écoulement. On obtient un mouvement pivotant à fermeture rapide à partir d'une orientation parallèle en créant une action de came dans la région adjacente aux bords amont (371) des membranes ou à proximité de cette région adjacente, tout en procédant au guidage positif de la trajectoire globale des mouvements de translation et de rotation des membranes par engagement mutuel en d'autres points (359, 327) espacés dans le sens aval. Les agencements pivotants décrits sont particulièrement efficaces pour guider positivement les membranes afin d'assurer un mouvement de fermeture efficace, quel que soit les écarts momentanés de dynamique du flux de sang inverse à travers la valvule.
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