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Related Experiment Videos

Easy access for a left ventricular assist system without thoracotomy.

E Sasaki1, T Nakatani, Y Taenaka

  • 1National Cardiovascular Center Research Institute, Department of Artificial Organs, Osaka, Japan.

ASAIO Transactions
|July 1, 1991
PubMed
Summary
This summary is machine-generated.

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A new percutaneous transseptal cannulation system for left ventricular assist systems (LVAS) offers improved simplicity and safety. Chronic animal studies show rapid placement and no embolic events, indicating readiness for clinical use.

Area of Science:

  • Cardiovascular Surgery
  • Biomedical Engineering
  • Medical Devices

Background:

  • Previous left ventricular assist system (LVAS) cannulation was effective but technically complex.
  • An improved percutaneous transseptal cannulation technique was developed for easier LVAS application.

Purpose of the Study:

  • To evaluate the simplicity and safety of an improved percutaneous transseptal cannulation system for LVAS.

Main Methods:

  • The improved system utilizes the inlet cannula as a sheath introducer for rapid left atrial insertion post-transseptal puncture.
  • The new cannula is constructed from antithrombogenic, low-friction polyvinyl chloride with a flexible, spiral-wired distal section.
  • Chronic animal experiments were conducted over 20 days to assess system performance and safety.

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Main Results:

  • The inlet cannula was successfully placed within seconds after transseptal puncture.
  • No systemic or pulmonary embolism occurred during 20 days of activation without anticoagulation.
  • Fluoroscopy revealed no cannula-associated thrombus formation, and the septal puncture site healed within 14 days post-removal.

Conclusions:

  • The improved cannulation system demonstrates enhanced simplicity and safety compared to previous methods.
  • The system is suitable for clinical application, offering promising manageability and safety for LVAS implantation.