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ADS1292RECG-FE: ADS1292RECG-FE on a live subject and compairings to other technologies

Marco Scordo
Prodigy 80 points
Part Number: ADS1292RECG-FE
Other Parts Discussed in Thread: ADS1292R

Support Path: /Tools & software/Help me with an issue/Design Kits / Evaluation Modules / Boards/Hardware issue/

Hello,

I've just bought the ADS1292RECG-FE because I want to get ECG/HR values and a respiration rate signal and I have some questions about it:

1) Would it be possible to test the demonstration kit on a real person and not using a simulator? Does the board protect subject electronically speaking? 

It would be important even to compare this technology to another one and check if measures and signals are reliable. 

2) I bought this leds: 

DIN EKG/EMG/EEG Snap Leads - 24 inch

Can still be used maybe using some adapters? 

Thank you!

Marco

 

  • 0
    TI__Mastermind 38745 points

    Hey Marco,

    1. As far as TI is concerned, the EVM is not to be used to connect with a live test subject because it has not gone through the properly regulatory scrutiny for us to sell it as something besides an EVM. This is all I am allowed to say.
    2. I searched for that on the web, and it looks like you will need some way of connecting to the DB9 connector on the EVM. Perhaps they have some kind of adapter on the web that can do this.

    Regards,

    Brian

  • 0 in reply to Brian Pisani
    Prodigy 80 points
    Brian,

    Thanks. This means if I want to test on subject I have to create a specific PCB and interface the ads1292r with a microcontroller to test on live subject. Couple of questions more:

    1) Do you think is possible to detect ECG/HR and RR at the same time with this component? So acquire for ecg and stimulate for respiration (managing well the right timing)?

    By using the ECG simulator is it possible to configure the evaluation board to detect just two electrodes signal next to the heart? Which channels should I choose?

    Thanks

    Marco
  • 0 in reply to Marco Scordo
    Prodigy 80 points
    Brian,

    Another thing. Is it really necessary to get the Fluke medSim 300B as a simlutor? I'm questioning even because, as indicated before, I want to evaluate the component even for Respiration. Do you something to suggest?

    Thanks

    Marco
  • 0 in reply to Marco Scordo
    TI__Mastermind 38745 points

    Hey Marco,

    The ADS1292R is designed to perform ECG data acquisition and respiration impedance measurement simultaneously. Have you read the datasheet for the ADS1292R? That document will have all of the technical details of how to connect and use the ADS1292R. Channel 1 is used for respiration impedance measurement and channel 2 should be used for ECG measurement.

    I believe Fluke actually discontinued production of the medSim 300B, but now they have other patient simulators that can do both respiration and ECG simulation. I recommend browsing their website and looking for a simulator that can do those things.

    Brian

  • 0 in reply to Brian Pisani
    Prodigy 80 points
    Brian,

    Thanks for your answer. This device is really complex but fascinates me. Do you think is possible to use both channels with just two electrodes? So by using the same electrodes to acquire (ECG) and stimulate (Resp Rate)?

    Talking about simulator, I've found the Multiparameter Simulator - DALE14 that can do both ECG and respiration.

    About the leads, can you suggest a web site in europe to acquire them? That would be great.

    Thanks

    Marco
  • 0 in reply to Marco Scordo
    TI__Mastermind 38745 points

    Hey Marco,

    Yes this is possible with the ADS1292R. The EVM is set up to measure both ECG and respiration using only 3 electrodes: RA, LA, and RL which is the patient ground electrode. LL is not used for the ADS1292R EVM. If you want to eliminate RL, you will need to ac couple the channel 2 inputs which is not possible with the EVM.

    The electrodes we use can be purchased here.

    Brian

  • 0 in reply to Brian Pisani
    Prodigy 80 points
    Brian,

    Thanks a lot. Do you think could be possible with just 2 electrodes? So the same for ECG and respiration? Why you would need 3?

    Thanks

    Marco
  • 0 in reply to Marco Scordo
    TI__Mastermind 38745 points
    Marco,

    The RL electrode is used in ecg applications to bias the patient. If instead, you ac couple the inputs, then no bias is needed and you can one 2 electrodes.

    Brian