Importance

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Abstract

A connection in a cardiac pacemaker features a double ended fixed sleeve anchored midway between opposite sides of a pacemaker jacket in electric communication with the interior mechanism. The fixed sleeve is double ended and capable of accepting either of two collets of the same outside diameter at either end. One of the collets has a larger inside diameter than the other for connection to an electric lead wire of size corresponding to the respective inside diameter. An equalizer sleeve carrying a collet draw screw fits either end of the fixed sleeve and is mounted at the end opposite the selected collet. When occasion arises for reversing the lead connection, end for end, to connect, for example, a lead of different size, the first lead is released from the collet as is also the equalizer sleeve. The equalizer sleeve is then removed and located at the opposite end of the fixed sleeve and another collet having a different inside diameter for a different electric lead is inserted into the sleeve at the end opposite the new location of the equalizer sleeve, ready for attachment of the different electric lead. Another form of the invention has a double ended collet, one end with a larger diameter opening then the other. There is a bushing at each end with a central passage screw threaded into the terminal shroud, each bushing having a hex wrench pocket so that a terminal can be inserted from either end and the collet tightened on it by wrench action at the opposite end.

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First Claim