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Related Experiment Videos

An improved bladder for pump control during ECMO procedures.

Y Tamari1, K Lee-Sensiba, S King

  • 1Department of Surgery, North Shore University Hospital, Manhasset, NY 11030, USA.

The Journal of Extra-Corporeal Technology
|March 21, 2000
PubMed
Summary

The new FDA-cleared Better-Bladder offers accurate, noninvasive pressure monitoring for extracorporeal membrane oxygenation (ECMO) circuits. This durable inline reservoir improves venous line compliance and pump control for short and long-term use.

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Area of Science:

  • Biomedical Engineering
  • Medical Devices

Background:

  • Extracorporeal membrane oxygenation (ECMO) circuits traditionally use silicone bladders or bladder boxes.
  • These devices have limitations that the Better-Bladder aims to address.

Purpose of the Study:

  • To evaluate the performance, accuracy, and durability of the new FDA-cleared Better-Bladder.
  • To assess its suitability for use in ECMO circuits.

Main Methods:

  • Bench testing of the Better-Bladder for noninvasive pressure measurement accuracy and durability.
  • Evaluation of pressure measurement error at various temperatures and over extended periods (60 days).
  • Pressurization tests to assess structural integrity.

Main Results:

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  • Noninvasive pressure measurements were accurate within +/- 4% of invasive measurements across a wide pressure range (-200 to +500 mmHg) and temperatures (10-37°C).
  • After 60 days, pressure measurement error remained below +/- 3%.
  • The Better-Bladder demonstrated high durability, withstanding 1700 mmHg for 10 days without failure.

    • Conclusions:

    • The Better-Bladder offers accurate and reliable noninvasive pressure monitoring in ECMO circuits.
    • Its compliance and pressure measurement capabilities enhance venous line management and pump speed control.
    • The device's accuracy, durability, and FDA clearance support its use in both short-term and long-term ECMO applications.