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Welcome to the Seismofit® support section. Here you’ll find solutions to common questions and practical information to help you use your Seismofit® Sensor effectively. Whether you’re encountering a connection issue, seeing an error message during measurement, or managing multiple sensors in your organization, you’ll find clear, step-by-step solutions here.

Request New Seismofit® Sensors, Users, and More

Managing your Seismofit® resources is straightforward through our self-service portal at https://ventriject.com/request-portal. This portal allows you to handle many common tasks. When you need more resources or account changes, you can request them directly through the portal, including:

  • Additional Seismofit® Sensors
  • New patches
  • Requesting new users for your account
  • Requesting deletion of existing users

Our portal makes these administrative tasks quick and convenient, allowing you to manage your resources whenever needed.

Getting Started with Seismofit®

Welcome to Seismofit®! In order to get access to your Seismofit® Sensor, you’ll need to set up your account and install the VentriJect App.

You’ll receive an email from noreply@ventriject.io containing a link to set up your password, once your account has been set up in the backend. This is your first step and needs to be completed before you can use the app.

Here’s what to do:

  1. Check your email for a message from noreply@ventriject.io (including your spam folder)
  2. Click the link in the email
  3. Create a password that includes:
    • At least 8 characters
    • A mixture of uppercase and lowercase letters
    • At least one special character

If you see an “Invalid Token Error” during this process, it means your setup link has expired – these links are valid for one hour. To resolve this:

  1. Go to the Ventriject ID Server
  2. Enter your email address and click submit to request a new link
  3. Check your email for the new link (remember to check your spam folder)
  4. Use the new link within one hour to complete your password setup

Once you’ve created your password, you’re ready to download the VentriJect Clinical app. Important: The VentriJect Clinical app works exclusively on mobile devices.

 You can find it:

Sign in with your email and the password you just created to begin using Seismofit®.

Connecting Your Seismofit® Sensor

Weather you are connecting your Seismofit® Sensor for the first time, or have issues connecting, you will find the most common solutions below.

Proper battery installation is essential for your Seismofit® Sensor to function correctly. The most important detail is the battery orientation, as an incorrectly inserted battery will prevent the sensor from working.

To install the battery correctly:

  1. Hold your sensor with the serial number facing down. 
  2. Locate the battery drawer on the edge of the sensor.
  3. Insert the battery with the positive side (marked with a “+”) facing down toward the serial number. This means the positive side will face the same direction as the measurement surface where you attach the patches.
  4. Gently push the drawer closed until you hear or feel a click, indicating it’s fully closed.

When you open the VentriJect app, it will automatically begin searching for nearby Seismofit® Sensors. Your sensor should appear in the list if it’s properly powered and within range.

If you don’t see your sensor in the list, you can manually trigger a new search:

  1. Place one finger in the center of the screen
  2. Pull down gently
  3. Release to start a new scan
  4. Watch for the refresh symbol that briefly appears at the top of your screen

If your sensor isn’t appearing in the app, follow these steps to resolve common connection problems:

  1. Check the Battery in the Seismofit® Sensor – Verify the battery is installed correctly:
    • Remove the battery and check its orientation
    • Try inserting it again, ensuring the positive side faces the same direction as the serial number
    • If problems persist, try a new battery
  2. Reset Your Connection – If the battery is correctly installed but the sensor still isn’t appearing:
    • Turn your phone’s Bluetooth off and back on
    • Close and reopen the VentriJect app
    • Try scanning for devices again
  3. Check Your Environment – Some environmental factors can affect the connection:
    • Stay within a few meters of the sensor
    • Move away from other Bluetooth devices and electronic equipment that emits electric and/or electromagnetic signals  
    • Try connecting in a different location to rule out interference
  4. Multiple Device Issues – If you’re in an environment with multiple sensors or users:
    • Verify you’re selecting the correct sensor ID from the available devices list
    • Ask nearby colleagues to turn off their Bluetooth if they’re not actively measuring
    • Have others completely close their VentriJect app
    • A sensor might not appear because it’s maintaining a previous connection with another phone

For Android devices to properly connect with your Seismofit® Sensor, you need to grant specific permissions to the VentriJect Clinical app. This is a crucial step that ensures your phone can discover and communicate with the sensor.

Step-by-Step Permission Setup

Follow these steps to ensure proper Bluetooth permissions:

  1. Open your Phone’s Settings App
  2. Navigate to Privacy Settings
    • Tap “Security and Privacy”
    • Select “Privacy”
  3. Access Permission Controls
    • Find and tap “Permissions Manager”
    • Scroll to find “Nearby Devices” or “Bluetooth Scan”
  4. Configure App Permissions
    • Look for “VentriJect Clinical” in the list of apps
    • If it’s listed under “Not Allowed,” tap on it
    • Select “Allow” to grant the necessary permissions
  5. Finalize Setup
    • Close your Settings app
    • Force close the VentriJect Clinical app if it was open
    • Reopen the VentriJect app
    • Try connecting to your sensor again

Measurement Error Messages

When taking a measurement with your Seismofit® Sensor, you might see an error message if something needs to be adjusted. Each error message indicates a specific issue that needs to be addressed to get an accurate measurement. It’s important to know that measurements resulting in error messages are not billed, and for those with a subscription, these do not count toward your subscription measurement limit. You can freely retry your measurement after addressing the issue indicated by the error message.

When you see a Data Connection Error, it means your measurement couldn’t be sent to our servers due to internet connection issues. Unfortunately, when this error occurs, the measurement data cannot be recovered. This means you’ll need to perform a new measurement once you have a stable internet connection.

Before starting a new measurement, take a moment to check your internet connection. You can test it by trying to load a website on your phone. If your connection seems unstable, you might want to:

  • Switch between WiFi and mobile data to see which provides a better connection
  • Move to an area with better signal strength
  • If you’re using WiFi, consider restarting your router
  • Wait until you have access to a more stable internet connection

Once you’ve confirmed you have a reliable internet connection, you can proceed with taking a new measurement. This will ensure your data can be properly transmitted to our servers for analysis.

In some rare cases, internet traffic to our servers can be blocked by your internal firewalls / internet setup. If you can access websites on your phone, but you cannot log in to the VentriJect App, there is a high chance that our servers are blocked. Please contact your IT / Network Administrator, to resolve this issue. If the IT / Network Administrator needs additional information, they can reach out to support@ventriject.com.

Your measurement shows this error when the detected heart rate falls outside the normal resting range of 30-100 beats per minute. To ensure accurate VO₂max estimation, the measurement needs to be taken when the person is truly at rest.

To resolve this:

  1. Have the person rest quietly for at least 5 minutes before measuring
  2. Avoid taking measurements after:
    • Physical activity
    • Eating or drinking
    • Walking or climbing stairs
  3. Ensure the environment is calm and quiet
  4. Try the measurement again after the rest period

This error indicates that the sensor cannot detect a clear heartbeat signal. The recording might be too short, or there might be an issue with how the sensor is attached.

To resolve this:

  1. Ensure the patches are firmly attached to clean, dry skin
  2. Press gently around the edges of the patches to secure them
  3. Keep the person still during the measurement
  4. Allow the full recommended recording time to complete

When you encounter this error, it means the sensor is detecting excessive signal interference. Similar to how background noise can make a conversation difficult to hear, any movement of the patient or external interference can prevent the sensor from obtaining a clear reading. This includes contact between the sensor and the patient’s clothing.

To resolve this:

  1. Ensure the person lies completely still
  2. Make sure patients clothing is not touching the sensor
  3. Keep electronic devices away from the measurement area
  4. Check that the patches are making good contact
  5. Maintain calm, regular breathing

This error appears when the sensor detects that the person isn’t lying flat on their back. The correct position is essential for accurate measurements.

To resolve this:

  1. Have the person lie completely flat on their back
  2. Use a firm, flat surface
  3. Ensure the upper body isn’t elevated
  4. Maintain this position throughout the measurement

This error means that while the sensor detected some signal, the estimation algorithm could not determine a stable heart rate pattern.

To resolve this:

  1. Ensure the person is relaxed and breathing normally
  2. Check that the patches are properly attached
  3. Keep the environment calm and quiet
  4. Try again after a few minutes of rest

This error typically appears when there’s a mismatch in the entered height and weight data. However, in some cases, it might appear even when all data is entered correctly, particularly for individuals with a higher body mass index.

To resolve this:

  1. First, double-check the height and weight entries:
    • Ensure the values haven’t been switched
    • Verify the units are correct
    • Make sure there are no typing errors
  2. If all the data is correct and you still see this error, please contact our support team with the time of the measurement.

This is a general error that occurs when the analysis system encounters an unexpected issue.

To resolve this:

  1. End the current measurement
  2. Close and reopen the app
  3. Try a new measurement
  4. If the error persists, contact support

Practical Usage and Maintenance Guide

For detailed instructions on sensor placement and measurement procedures, please refer to the Instructions for Use (IFU). Daily maintenance of your Seismofit® Sensor is straightforward and requires minimal effort to keep it functioning properly.

Your sensor can be cleaned with a standard alcohol swab between uses. While regular cleaning is important, remember that the sensor cannot be sterilized or submerged in water. Store your sensor in a dry place at room temperature.

If you happen to drop your sensor and notice a rattling sound, this is typically the internal weight shifting and usually doesn’t affect measurement accuracy. However, avoiding frequent drops will help maintain the sensor’s longevity and message support@ventriject.com.

The sensor uses a standard 3V CR2032 button battery, readily available at most supermarkets and convenience stores. You’ll know it’s time to replace the battery when the sensor stops appearing in the app. When inserting a new battery, remember that the positive side should face the same direction as the measurement surface (the side with the serial number).

Patches must be replaced after each measurement as they are designed for single use only. Fresh patches ensure proper adhesion and optimal signal quality. You can order new Seismofit® Patches through our request portal: https://ventriject.com/request-portal. Always use official Seismofit® Patches to maintain measurement accuracy.

Due to data protection requirements, measurement history is not stored within the app. However, you can generate PDF reports of your measurements in two ways:

  1. Manual Generation: Request a PDF report immediately after completing each measurement by clicking the appropriate button in the app.
  2. Automatic Generation: For convenience, you can have PDF reports automatically generated after each measurement. Contact our support team to enable this feature for your account.

These PDF reports provide a permanent record of your measurements while maintaining data protection standards.

Getting Additional Help

While most common questions are addressed in the sections below, we understand you might sometimes need additional assistance. Our support team is always ready to help at support@ventriject.com, or you can submit a request through the portal.

For detailed information about operating your Seismofit® Sensor, please refer to the Instructions for Use (IFU) document. The content here complements the IFU by providing solutions to common challenges and practical usage tips. Find the current version of the IFU here: https://ventriject.com/ifu/