Systems and methods for signal acquisition and visualization

A system for near real-time visualization of one or more biomedical signals emitted from a patient, comprising:

• a differential circuit having two paths and configured to process the one or more biomedical signals in an analog domain, wherein the differential circuit is further configured to linearly attenuate a respective amplitude of the one or more biomedical signals within a first frequency range between about 350 kHz and about 600 kHz;
• a differential amplifier module comprising a plurality of differential amplifier stages, wherein the differential amplifier module is coupled to each of the two paths of the differential circuit and is configured to amplify a first output of the differential circuit by an amplification factor, wherein the amplification factor is less than or equal to about 50 for the one or more biomedical signals within a second frequency range between about 0.01 Hz and about 1000 Hz;
• an analog-to-digital converter module, coupled to the differential amplifier module and configured to digitize a second output of the differential amplifier module to produce a digitized third output of the analog-to-digital converter module, wherein the analog-to-digital converter module has greater than 16-bit resolution;
• a processor comprising software, configured to apply filtering comprising frequency-selective filtering and signal processing algorithms to the digitized third output from the analog-to-digital converter module to extract high-frequency and low-amplitude features of the one or more biomedical signals, and output packets of processed signals and the one or more biomedical signals;
• a plurality of synchronization delay elements configured to synchronize the processed signals with the one or more biomedical signals;
• and
• a display device comprising a graphical user interface, configured to display the synchronized processed signals and the one or more biomedical signals.

A system for visualization of one or more biomedical signals emitted from a patient, the system comprising:

• a biomedical signal interface device for conveying the one or more biomedical signals to the system, comprising:
• an input protection circuit to shunt a defibrillation signal;
• a plurality of circuit board elements coupled to the input protection circuit, each of the plurality of circuit board elements comprising:
• a differential circuit having two paths configured to process the one or more biomedical signals in an analog domain, wherein the differential circuit is further configured to linearly attenuate a respective amplitude of the one or more biomedical signals within a first frequency range between about 350 kHz and about 600 kHz;
• a differential amplifier module comprising a plurality of differential amplifier stages, wherein the differential amplifier module is coupled to each of the two paths of the differential circuit and is configured to amplify a first output of the differential circuit by an amplification factor, wherein the amplification factor is less than or equal to about 50 for the one or more biomedical signals within a second frequency range between about 0.01 Hz and about 1000 Hz;
• and
• an analog-to-digital converter module, coupled to the differential amplifier module, configured to digitize a second output of the differential amplifier module to produce a digitized third output of the analog-to-digital converter module, wherein the analog-to-digital converter module has greater than 16-bit resolution;
• and
• a processor comprising software, communicatively coupled to each analog-to-digital converter module of the plurality of circuit board elements, wherein the processor is configured to process the respective digitized third output from each analog-to-digital converter module for display.

A system for visualization of one or more biomedical signals from a patient, the system comprising:

• a medical signal interface device for conveying the one or more biomedical signals between the patient and monitoring or treatment devices, wherein the one or more biomedical signals have a recognized pattern, the medical signal interface device comprising:
• a differential circuit having two paths configured to process the one or more biomedical signals in an analog domain, wherein the differential circuit is further configured to linearly attenuate a respective amplitude of the one or more biomedical signals within a first frequency range between about 350 kHz and about 600 kHz;
• a differential amplifier module comprising a plurality of differential amplifier stages, wherein the differential amplifier module is coupled to each of the two paths of the differential circuit and is configured to amplify a first output of the differential circuit by an amplification factor, wherein the amplification factor is less than or equal to about 50 for the one or more biomedical signals within a second frequency range between about 0.01 Hz and about 1000 Hz;
• and
• an analog-to-digital converter module, coupled to the differential amplifier module, configured to digitize a second output of the differential amplifier module to produce a digitized third output of the analog-to-digital converter module, wherein the analog-to-digital converter module has greater than 16-bit resolution;
• and
• a processor comprising software, wherein the software comprises a digital processing function configured to identify a measure of deviation between the digitized third output of the analog-to-digital converter module and the recognized pattern of the one or more biomedical signals.