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Related Experiment Videos

[New practical sizer for ATS medical open pivot valve].

Y Yaginuma1, M Ottomo, K Abe

  • 1Department of Cardiovascular Surgery, Yamagata Prefectural Central Hospital, Japan.

Kyobu Geka. the Japanese Journal of Thoracic Surgery
|May 13, 1999
PubMed
Summary

A new valve sizer accounts for the sewing cuff diameter of the ATS Medical valve, preventing sizing issues during heart valve replacement surgery. This improved sizer ensures accurate prosthetic valve selection for better patient outcomes.

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Area of Science:

  • Cardiovascular Surgery
  • Biomedical Engineering
  • Prosthetic Devices

Context:

  • The ATS Medical valve features a double velour polyester sewing cuff, resulting in a diameter larger than the native tissue annulus.
  • Current valve sizers equate the sizer ring diameter with the tissue annulus diameter, neglecting the sewing cuff's increased size.

Purpose:

  • To address the sizing discrepancy caused by the ATS Medical valve's sewing cuff.
  • To develop an improved valve sizer that accurately measures the required prosthetic heart valve size.

Summary:

  • A modified valve sizer was developed by incorporating a flange that mimics the sewing cuff's shape.
  • This flange allows for the measurement of both the tissue annulus and the sewing cuff diameter.
  • The revised sizer design aims to prevent oversizing and ensure optimal fit during valve replacement procedures.

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Impact:

  • The enhanced sizer facilitates more accurate prosthetic valve selection, reducing surgical complications.
  • Improved sizing accuracy can lead to better hemodynamic performance and long-term outcomes for patients undergoing heart valve replacement.
  • This innovation offers a more practical solution for surgeons, minimizing intraoperative sizing difficulties.