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| Titel: |
Vena Cava Occlusion: Balloon Design |
| Auteur: |
Sturgeon, J. F. O'connor, K. J. Snyder, R. W. |
| Verschenen in: |
International journal of polymeric materials |
| Paginering: | Jaargang 5 (1977) nr. 3 pagina's 189-209 |
| Jaar: |
1977-01-01 |
| Inhoud: |
Various considerations in the development of a natural rubber balloon for vascular occlusion, particularly vena cava occlusion are summarized. The physical properties of the rubber necessary for occlusion are discussed. Since the balloon must remain inflated for at least 4 to 12 weeks after implantation, the balloon should be impermeable to the inflation medium. A measure of the impermeability incorporated in this design is presented. Optimum values for physical properties such as tensile strength, stress and elongation at break are discussed along with the geometric considerations of fixation relative to stress. Results of tests for biological acceptability (such as toxicity and implantability) of the candidate balloon material are included. The occlusion process was studied by investigating the pressure/volume relationships in the unrestricted condition and in restricting tubes of varying compliance resulting in the selection of an appropriate balloon configuration. Experiments indicated that the restricted rupture volume of a balloon (if its unrestricted volume is not exceeded) is determined by the size and compliance of the restricting tube. Pressure-volume data collected while the samples were restricted in cadaver venae cavae are presented. Lastly, in vitro testing was done to measure environmental degradation and these effects are described. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 8 van 8 gevonden artikelen
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