NON-RETURN VALVES PARTICULARLY AS PROSTHETICS

• US 3,608,097 A
• Filed: 01/03/1969
• Issued: 09/28/1971
• Est. Priority Date: 06/28/1968
• Status: Expired due to Term

• Current Assignee: Bellhouse Brian John, Bellhouse Francis Hewitt, Reid Kenneth Grant
• Original Assignee: Bellhouse Brian John, Bellhouse Francis Hewitt, Reid Kenneth Grant
• Inventors: BELLHOUSE BRIAN JOHN, BELLHOUSE FRANCIS HEWITT, REID KENNETH GRANT
• Application Number:
  US04/788,743
• Time in Patent Office: 998 Days
• US Class Current: 623/1.26
• CPC Class Codes: A61F 2/2412 with soft flexible valve members, e.g. tissue valves shaped like natural valves check valves with flexible valve members in general F16K15/14
• CPC Class Codes: Y10T 137/788 Having expansible port

Abstract

A CHECK-VALVE WHICH IS PARTICULARLY THOUGH NOT SOLELY APPLICABLE AS A PROSTHESIS IN CARDIAC SURGERY: IT CONCERNS A VALVE WHICH HAS PLURAL CUSP-LIKE PLIABLE ELEMENTS WHICH ARE ASSOCIATED WITH A DUCT FORMATION SUCH AS TO AFFORD A FLUID-DYNAMIC PRESSURE EFFECT TENDING TO CLOSE THE VALVE THE ARRANGEMENT OF THE VALVE BEING SUCH AS TO MINIMIZE TURBULENCE WHEN FLUID FLOWS THROUGH IT. THE CUSPS ARE SUPPORTED BY A RIGID FRAME HAVING THREE UPSTANDING POSTS SPACED ABOUT 120* APART AND FORM A SUBSTANTIALLY CYLINDRICAL OPENING WHEN THE VALVE IS AT REST. THE CUSPS ARE MOVED TO THE CLOSED POSITION WHEN REVERSAL OF FLUID FLOW OCCURS THROUGH THE VALVE.

Claims