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Initial experimental experience with a "replaceable" cardiac valve prosthesis.

D K Cooper·W N Wicomb·G M Gould·D Boonzaier
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Abstract

An easily "replaceable" cardiac valve prosthesis has been designed. It consists of two parts: (1) a sewing ring incorporating a circlip and (2) a functioning valve (either mechanical or tissue). The circlip is encased in a sewing ring, which is sutured into the natural valve annulus, and grips the functional part of the prosthesis, thereby preventing dislodgment. A simple instrument has been designed to open the circlip a few millimeters to allow easy removal or insertion of the functional element. This sewing ring/circlip with the functional element of a Björk-Shiley prosthesis was used in 10 baboons undergoing mitral valve replacement. Removal and replacement of the functional element was carried out at a second operation between 1 and 12 weeks later. There were no operative deaths. Baboons were electively killed one day to twelve months after the second operation. There were no complications related to the prosthesis; cardiac catheterization showed normal hemodynamics before and after the second operative procedure.

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AnimalsDisposable EquipmentHeart Valve ProsthesisPapioProsthesis DesignReoperationJournal ArticleResearch Support, Non-U.S. Gov't

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D K Cooper, W N Wicomb, G M Gould, D Boonzaier. 1988. Initial experimental experience with a "replaceable" cardiac valve prosthesis.. https://doi.org/10.1016/s0003-4975(10)64532-8

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