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Related Experiment Videos

Experience with a new woven prosthesis.

N Ancalmo1, J Ochsner

  • 1Dept of Surgery, Ochsner Clinic, Baton Rouge, LA 70816.

The Journal of the Louisiana State Medical Society : Official Organ of the Louisiana State Medical Society
|September 1, 1992
PubMed
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The Ochsner series vascular graft, using an interlock construction, offers improved durability and tissue integration compared to earlier woven Dacron grafts. This design enhances graft fixation and reduces fraying for better surgical outcomes.

Area of Science:

  • Vascular Surgery
  • Biomaterials Science
  • Textile Engineering

Background:

  • The development of synthetic vascular grafts began in 1952 with fabric prostheses.
  • Dacron (polyester) has been a durable material for both knitted and woven vascular grafts.
  • Previous woven graft designs faced challenges with unraveling, fraying, and pseudo-intima fixation.

Purpose of the Study:

  • To evaluate the Ochsner series grafts as an improvement over existing woven vascular prostheses.
  • To address the limitations of earlier woven graft designs, specifically unraveling, pliability, and pseudo-intima fixation.
  • To highlight the benefits of the interlock construction in vascular graft technology.

Main Methods:

  • Utilizing an interlock stitch construction for enhanced graft integrity.

Related Experiment Videos

  • Employing three low-twist yarns and a loose crimp to improve graft softness and pliability.
  • Incorporating low-twist, highly filamentous yarns to promote tissue ingrowth and pseudo-intima fixation.

    • Main Results:

    • The interlock construction effectively eliminated unraveling and reduced fraying in the Ochsner series grafts.
    • The use of specific yarn properties and construction techniques resulted in a soft and pliable graft.
    • Improved tissue ingrowth facilitated by the graft material led to better pseudo-intima fixation.

    Conclusions:

    • The Ochsner series grafts, with their interlock construction, overcome key limitations of earlier woven Dacron grafts.
    • This novel design offers enhanced durability, improved handling characteristics, and superior tissue integration.
    • The Ochsner grafts represent a significant advancement in the search for ideal vascular prostheses.