A manual pulse duplicator to test heart valves before implantation
نویسندگان
چکیده
منابع مشابه
A Simple Versatile Pulse Duplicator.
Recent developments in the surgery of the heart valves have made the pulse duplicator an indispensable research tool; the duplicator also provides a useful aid in the teaching of the movements of normal and pathological heart valves. Many types have been described in the literature, and a review (Austen, Shaw, Scanrell, and Thurlbeck, 1958; Barnard, McKenzie, and de Villiers, 1959; Bjork, Inton...
متن کاملA mechanical pulse duplicator for testing prosthetic mitral and aortic valves.
The purpose of a prosthetic cardiac valve is to restore the function of a diseased aortic or mitral valve, and its role in haemodynamics is a passive one: the opening and closing of such a valve is strictly regulated by the pressure differences in the cardiac chambers which communicate through this valve. Therefore we consider that a prosthetic valve should be tested under conditions simulating...
متن کامل“design and Construction of a New Pulse Duplicator System for in Vitro Evaluation of Prosthetic Heart Valves – Conception of an Experimental Setup on Mitral Position”
Since most complications related to operation of prosthetic heart valves are due to disturbances of flow, its hydrodynamic characterization is a useful aid in the design of new prostheses. Besides durability and biological response to implant, these prostheses should provide a favorable hemodynamic profile, considering that there is a great clinical interest focused on the haemolysis of blood. ...
متن کاملTranscatheter valve-in-valve implantation for failed bioprosthetic heart valves.
BACKGROUND The majority of prosthetic heart valves currently implanted are tissue valves that can be expected to degenerate with time and eventually fail. Repeat cardiac surgery to replace these valves is associated with significant morbidity and mortality. Transcatheter heart valve implantation within a failed bioprosthesis, a "valve-in-valve" procedure, may offer a less invasive alternative. ...
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John G. Webb, MD; David A. Wood, MD; Jian Ye, MD; Ronen Gurvitch, MD; Jean-Bernard Masson, MD; Josep Rodés-Cabau, MD; Mark Osten, MD; Eric Horlick, MD; O. Wendler, MD; Eric Dumont, MD; Ronald G. Carere, MD; Namal Wijesinghe, MD; Fabian Nietlispach, MD; Mark Johnson, MD; Chrisopher R. Thompson, MD; Robert Moss, MD; Jonathon Leipsic, MD; Brad Munt, MD; Samuel V. Lichtenstein, MD, PhD; Anson Cheun...
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ژورنال
عنوان ژورنال: The Journal of Thoracic and Cardiovascular Surgery
سال: 1973
ISSN: 0022-5223
DOI: 10.1016/s0022-5223(19)40647-8