An adapter which actively connects a 2-lead oximeter probe or monitor to a 3-lead monitor or probe. This is done actively, with the alternating drive signals from the oximeter monitor providing a control signal for switching the adapter connections. The adapter connections are preferably made with diodes,...http://www.google.es/patents/US6023541?utm_source=gb-gplus-sharePatente US6023541 - Active optical oximeter probe adapter
