Abstract
A new probe for measuring the viscoelastic properties of a gastrointestinal sphincter was devised and tested in the pyloric sphincter of the dog. The head of the probe can be expanded and retracted electronically at various speeds. For three expansion speeds of the probe head, stress/strain cycles were obtained from pyloric sphincters in seven dogs. Individual parameters of viscosity and elasticity were obtained with the use of a microcomputer.
Résumé
Une nouvelle sonde pour la mesure des propriétés viscoelastiques d'un sphincter digestif est décrite et essayée dans le sphincter pylorique du chien. La tête de la sonde peut être expansée et rétractée par un système électronique fonctionnant à diverses vitesses. Des cycles contrainte/déformation sont obtenus à partir de sphincters pyloriques de sept chiens pour trois vitesses d'expansion de la tête de la sonde. Les paramètres individuels de viscosité et d'élasticité sont automatiquement obtenus à l'aide d'un miniordinateur.
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Arhan, P., Persoz, B., Gignier, P. et al. Rheological properties of the dog pyloric sphincter. Med. Biol. Eng. Comput. 21, 489–493 (1983). https://doi.org/10.1007/BF02442638
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DOI: https://doi.org/10.1007/BF02442638