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US 2026/0306071 A1Published application
Analog platform for intravascular image acquisition
AssigneeBoston Scientific Scimed, Inc.
InventorCanute Paul Pereira
Life of this patent
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Abstract
A circuit and design for an analog front end is provided. The AFE includes a number of sub-stages each with multiple optional or alternative pathways to complete the circuit. These pathways can be dynamically set during runtime based on the type of imaging catheter used with the AFE or can be set at manufacturing.
Claims20
An analog front end (AFE) for an intracorporeal image acquisition device, comprising:
- a high-pass filter stage comprising a plurality of high-pass filters and at least one switch selectable to electrically couple a selected one of the plurality of high-pass filters to an input;
- a gain stage comprising a plurality of voltage attenuators and a plurality of amplifier circuits arranged to define a plurality of signal pathways, the gain stage configured to electrically couple an output of the high-pass filter stage to an output of the gain stage through a selected one of the plurality of signal pathways, the selected one of the plurality of signal pathways comprising one of the plurality of voltage attenuators and one of the plurality of amplifier circuits;
- and
- a low-pass filter stage comprising a plurality of low-pass filters and at least one switch selectable to electrically couple a selected one of the plurality of low-pass filters to the output of the gain stage.
1 more element
An intracorporeal image acquisition device, comprising:
- image acquisition circuitry comprising an analog front end (AFE) and a digital processing circuit coupled to the AFE, the digital processing circuit arranged to receive a digitized signal from the AFE,
- wherein the AFE comprises:
- a high-pass filter stage comprising a plurality of high-pass filters and at least one switch selectable to electrically couple a selected one of the plurality of high-pass filters to an input;
- a gain stage comprising a plurality of voltage attenuators and a plurality of amplifier circuits arranged to define a plurality of signal pathways, the gain stage configured to electrically couple an output of the high-pass filter stage to an output of the gain stage through a selected one of the plurality of signal pathways, the selected one of the plurality of signal pathways comprising one of the plurality of voltage attenuators and one of the plurality of amplifier circuits;
- and
- a low-pass filter stage comprising a plurality of low-pass filters and at least one switch selectable to electrically couple a selected one of the plurality of low-pass filters to the output of the gain stage.
3 more elements
A system for intracorporeal image acquisition, comprising:
- an intravascular ultrasound (IVUS) catheter;
- a motor drive unit (MDU) couplable to the IVUS catheter and arranged to rotate the IVUS catheter during operation;
- and
- image acquisition circuitry couplable to the MDU and arranged to receive signals comprising indications of ultrasound from the IVUS catheter via the MDU during operation, the image acquisition circuitry comprising an analog front end (AFE) and a digital processing circuit coupled to the AFE,
- wherein the AFE comprises:
- a high-pass filter stage comprising a plurality of high-pass filters and at least one switch selectable to electrically couple a selected one of the plurality of high-pass filters to an input that receives the signals comprising indications of ultrasound;
- a gain stage comprising a plurality of voltage attenuators and a plurality of amplifier circuits arranged to define a plurality of signal pathways, the gain stage configured to electrically couple an output of the high-pass filter stage to an output of the gain stage through a selected one of the plurality of signal pathways;
- and
- a low-pass filter stage comprising a plurality of low-pass filters and at least one switch selectable to electrically couple a selected one of the plurality of low-pass filters to the output of the gain stage.
6 more elements
Dependencies are inferred from the claim text.