CPC H05K 1/0262 (2013.01) [A61B 1/00124 (2013.01); A61B 1/04 (2013.01); A61N 1/37229 (2013.01); G02B 23/24 (2013.01); H01Q 1/2283 (2013.01); H01Q 21/28 (2013.01); H04N 23/00 (2023.01); H05K 1/0215 (2013.01); H05K 1/185 (2013.01); H05K 2201/0776 (2013.01)] | 15 Claims |
1. A substrate for a medical device configured to be included in the medical device, a portion of the medical device is configured to be brought into contact with or inserted into a subject, the substrate for the medical device comprising:
a patient circuit that is conductively connected to the portion of the medical device that is configured to be brought into contact with or inserted into the subject;
a ground-side circuit configured to perform at least one of transmission of a signal, reception of a signal, and supply of electric power to the patient circuit, the ground-side circuit being grounded by a protective ground to ensure safety of a manipulator of the medical device;
an insulating layer provided between the patient circuit and the ground-side circuit and providing electrical insulation between the patient circuit and the ground-side circuit; and
an isolated circuit provided in a position apart from the patient circuit and the ground-side circuit on the insulating layer, the isolated circuit is completely surrounded by an insulating layer arranged between the patient circuit and the ground-side circuit in a plan view, and no impedance element having an impedance lower than the insulating layer is connected to the isolated circuit,
wherein the isolated circuit is placed at a position on at least one of a first external surface and a second external surface where stray capacitance occurs between the patient circuit and the ground-side circuit.
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