Abstract: A probe or catheter to patient RF coupling for magnetic resonance imaging includes a conductive grounding strap. The strap includes a first end spaced apart from a second end, the first end configured to be permanently or removably connectable to a conductive probe or catheter housing or a conductive probe or catheter interface of a probe or catheter. A conductive patient interface is configured to be removably connectable to a portion of a patient's body and electrically conductive between the conductive grounding strap and the patient's body. The conductive patient interface is attached at the second end of the conductive grounding strap and electrically coupled to the conductive probe or catheter housing or the conductive probe or catheter interface. An electrical circuit is formed between the patient's body, the conductive patient interface, the conductive grounding strap, and the conductive probe or catheter housing or interface.

Abstract: A secondary header for an active implantable medical device (AIMD) incorporates a secondary header plug configured for mating insertion into an AIMD ISO DF4 or IS4 connector cavity, a secondary header ISO DF4 or IS4 connector cavity, and at least one replacement lead connector cavity. The secondary header plug has four electrical contacts which correspond to four electrical contacts of the AIMD connector cavity. The secondary header connector cavity has less than four electrical contacts conductively coupled to the secondary header plug electrical contacts. The replacement lead connector cavity has at least one electrical contact conductively coupled to at least one electrical contact of the secondary header plug. An intermediate conformal section between the secondary header plug and a housing for the secondary header connector cavity places the secondary header connector cavity housing adjacent to an exterior surface of the AIMD.