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Related Experiment Videos

In situ venous valve construction.

N M Wilson1, D L Rutt, N L Browse

  • 1Surgical Unit, UMDS, St. Thomas' Hospital, London, UK.

The British Journal of Surgery
|May 1, 1991
PubMed
Summary

A novel surgical technique creates functional deep venous valves using vein wall intussusception. This method shows promise for treating venous reflux and calf pump failure syndrome.

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Area of Science:

  • Vascular Surgery
  • Regenerative Medicine
  • Biomedical Engineering

Background:

  • Deep venous reflux and calf pump failure syndrome significantly impact patient mobility and quality of life.
  • Current treatment options for severe venous valve insufficiency are limited.
  • Autologous tissue reconstruction offers a potential solution for venous valve repair.

Purpose of the Study:

  • To describe and evaluate a new in situ deep venous valve construction technique.
  • To assess the patency and competence of autologously constructed venous valves.
  • To determine the feasibility of this technique for clinical application in patients with venous insufficiency.

Main Methods:

  • A novel technique of in situ deep venous valve construction using vein wall intussusception was developed.
  • Size-matched, autogenous valves were constructed in the femoral vein of canine models.
  • Valve function was assessed immediately and longitudinally using ascending and descending phlebography, Harvey's test, and hydrostatic testing.

Main Results:

  • Forty-one valves were constructed, with all demonstrating immediate patency and competence via Harvey's test.
  • Descending phlebography confirmed competence in 38 valves.
  • Hydrostatic testing showed 24 of 27 valves to be fully competent, with no thrombosis observed in any valve during follow-up up to 112 days.

Conclusions:

  • The described in situ vein wall intussusception technique successfully creates patent and competent autogenous deep venous valves.
  • This method shows potential for addressing venous valve insufficiency and associated conditions like calf pump failure syndrome.
  • Further investigation is warranted to translate this technique to human clinical trials for deep venous valve replacement.

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