The adapter is adapted to convert a metal encapsulated device, such as an implantable cardiac pacer to an externally worn cardiac pacer whereby a physician can try various pacers before selecting an appropriate implantable cardiac pacer to meet the pacing needs of a patient and before implantation of...http://www.google.com/patents/US4545381?utm_source=gb-gplus-sharePatent US4545381 - Adapter for converting a metal encapsulated implantable cardiac pacer to an externally worn cardiac pacer
