Patent ID: 11944457
Assignee: KONINKLIJKE PHILIPS N.V.
Field: Medical technology (Instruments)
Classification: CPC A  G  H | IPC A

Claim 0:
1. A sensor device comprising:
a shaft;
a pair of electrical wires running along the shaft;
a sensing head at a distal end of the shaft connected to the pair of electrical wires, wherein the sensing head comprises:
a first sensor that is associated with signals carried by the pair of electrical wires in a first frequency range and a first voltage range;
a second sensor that is associated with signals carried by the pair of electrical wires in a second frequency range different to the first frequency range and a second voltage range different to the first voltage range; and

a shorting circuit comprising a shorting switch and a frequency-dependent filter circuit for controlling the switching of the shorting switch, wherein the shorting circuit is adapted to short the first sensor based on at least frequency by closing the shorting switch when signals in the second frequency range are present on the pair of electrical wires, thereby to prevent the first sensor being exposed to signals associated with the second sensor.