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Biomedical subjects

D L Purdy

Publications and source records attributed to D L Purdy.

2 recordsLinked to original sources
PubMed1982

A new multiprogrammable isotopic powered cardiac pacemaker.

A new multiprogrammable, isotopic-powered cardiac pacemaker was implanted in six patients as a custom device. Five were initial implants and one was a replacement. The patients were studied for up to two years. In five of the six cases it was found advantageous to change one of the programmable parameters. Multiprogrammability is obviously as important in an isotopic pulse generator as in a lithium unit, if not more so, because of the unit's greater longevity. Further studies are continuing in an FDA approved clinical trial.

Electrocardiography↗
PubMed1975

A new radioisotope-powered cardiac pacer.

A small lighweight nuclear pacer is described. The unit weighs 6) Gm. and occupies a bolume of 33 c.c. It is a standard, R-wave inhibited, demand pacer and has been shown to be insensitive to electromagnetic interference. The unit has met all United States and Foreign Atomic Energy Commission (AEC) safety specification requirements, including cechanical shock, industrial fire, accidental crush, cremation, impact, and corrosion. Its calculated life is in excess of 20 years. Extensive dog testing has been completed and will be described in detail elsewhere. The United States AEC has been issued a license to conduct extensive clinical trials. These began in October 1974, and will be the subject of a later report.

Animals↗