Implantable medical device (imd) including sensing amplifier circuitry
OwnerMichael Fortnerinventor
Life of this patent
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Abstract
An implantable medical device (IMD) configured to sense biosignals of a patient. The IMD comprises one or more power components for powering the IPG and sensing circuitry for sensing one or more biosignals of the patient, wherein the sensing circuitry comprises a hybrid circuit having a BJT portion and a CMOS FET portion, the BJT portion configured to amplify low voltage signals with low equivalent noise and the CMOS FET portion forming a power-optimized output stage.
Claims29
An implantable pulse generator (IPG) for generating electrical pulses to stimulate a neural tissue of a patient, comprising:
- one or more battery components for powering the IPG;
- pulse generating circuitry for generating electrical pulses;
- a header structure with a plurality of electrical connections adapted to contact one or more terminals of one or more stimulation leads or one or more lead extensions coupled to respective ones of the one or more stimulation leads, wherein the one or more stimulation leads each include a plurality of electrodes;
- and
- sensing circuitry for sensing one or more biosignals associated with the neural tissue, wherein the sensing circuitry comprises an amplifier for amplifying the one or more biosignals, the amplifier including a noise-optimized input stage coupled to a power-optimized output stage.
An implantable medical device (IMD) for sensing biosignals of a patient, the IMD comprising:
- a power supply for powering the IMD;
- one or more sensing elements;
- and
- sensing circuitry including an amplifier comprising a first circuit portion formed of one or more bipolar junction transistors (BJTs) disposed on a first semiconductor die and a second circuit portion electrically coupled to the first circuit portion, the second circuit portion formed of a plurality of complementary metal-oxide-semiconductor (CMOS) field effect transistors (FETs) disposed on a second semiconductor die, the first circuit portion configured to receive a biosignal from the patient via one or more sensing elements.
Dependencies are inferred from the claim text.