PROCÉDÉS DE FABRICATION DE TUBULURES POLYMÈRES SPIRALÉES ET FLEXIBLES DESTINÉES À DES FINS MÉDICALES, TUBULURES FABRIQUÉES PAR CES PROCÉDÉS ET UTILISATIONS DESDITES TUBULURES
Methods of manufacturing a length of a flexible polymeric medical tubing of the kind comprising a tubing member defining a lumen, which tubing member is surrounded by spiral convolutions along at least a part of the length of the proximal section and/or the distal section, and which medical tubing has a proximal convoluted section and a distal convoluted section, is disclosed, as well as medical tubings obtained by the methods and their uses. One method comprises the steps of providing a medical tubing wherein the proximal section and the distal section have substantially uniform initial pitch (Pinitial) between adjacent convolutions, and modifying the initial pitch (Pinitial) of at least a part of the proximal section by stretching at least a part of the proximal section to achieve a modified proximal section with a proximal pitch (Pproximal) between adjacent convolutions that is larger than the initial pitch (Pinitial) between adjacent convolutions. In another method the medical tubing is manufactured in a molding process. The so obtained medical tubing is particularly suited for use in open surgical procedures that requires suction and/or irrigation during use of an electrosurgical instrument.La présente invention concerne des procédés de fabrication d'une longueur d'une tubulure polymère et flexible destinée à des fins médicales (1') de la sorte comprenant un élément tubulure (1a) définissant une lumière, ledit élément tubulure (1a) étant entouré par des convolutions en spirale (5) sur au moins une partie de la longueur de la section proximale et/ou de la section distale, et ladite tubulure médicale a une section proximale convolutée (2 ； 2') et une section distale convolutée (3). La présente invention concerne en outre des tubulures médicales obtenues par lesdits procédés, ainsi que leurs utilisations. La section proximale (2') a un pas proximal (Pproximal) entre les convolutions adjacentes (5) qui est plus grand que le pas distal (Pinitial) entre les convoluti
