Related Experiment Videos
Development of a prosthetic venous valve.
Journal of Biomedical Materials Research
|September 1, 1985
Summary
Researchers developed prosthetic venous valves to treat thrombophlebitis. Pellethane valves showed promise, remaining patent for at least 5 days in canine jugular veins, unlike umbilical vein valves.
Area of Science:
- Biomaterials Science
- Vascular Surgery
- Medical Device Development
Background:
- Thrombophlebitis often involves the destruction of venous valves in the lower extremities.
- This valve damage can lead to significant circulatory problems and discomfort.
Purpose of the Study:
- To engineer and evaluate a novel prosthetic venous valve for implantation.
- The goal was to mitigate the adverse effects of thrombophlebitis in the femoral system.
Main Methods:
- Two types of prosthetic valves were created: Pellethane (dip-casting) and fixed umbilical vein.
- Valves were implanted bilaterally into the external jugular veins of 10 dogs.
- Patency was assessed using X-ray venography at multiple time points post-surgery.
Main Results:
- All umbilical vein valves occluded within 48 hours.
- Two Pellethane valves maintained patency for at least 5 days, occluding by day 8.
- The experimental setup ensured no direct blood-device interaction.
Conclusions:
- Pellethane prosthetic venous valves demonstrate potential for use in venous circulation.
- Further research is warranted to optimize implant design and long-term efficacy.