Echogenic enhancement for a needle

A - Human Necessities – 61 – B

Patent

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A61B 10/02 (2006.01) A61B 17/34 (2006.01) A61B 19/00 (2006.01)

Patent

CA 2747525

A needle (100; 200; 300) includes a surface with a plurality of first ultrasound reflecting depressions (106, -206, -306) formed therein. The first depressions are distributed along at least a portion of a length of the needle separated from one another by intervening sections (108; 208; 308). Each of the first depressions is extending along a curve between first and second ends adjacent to corresponding ones of the intervening sections with troughs at which surfaces of each of the first depressions most closely approach a longitudinal axis of the needle being offset toward the first ends of each of the first depressions.

L'invention concerne une aiguille (100 ; 200 ; 300) comprenant une surface dans laquelle est formée une pluralité de premiers évidements (106, 206, 306) réfléchissant les ultrasons. Les premiers évidements sont répartis le long d'au moins une partie de la longueur de l'aiguille et séparés les uns des autres par des sections intercalaires (108 ; 208 ; 308). Chacun des premiers évidements s'étend suivant une courbe entre des première et deuxième extrémités adjacentes à des extrémités correspondantes des sections intercalaires, les creux au niveau desquels les surfaces de chacun des premiers évidements s'approchent le plus d'un axe longitudinal de l'aiguille étant décalés vers les premières extrémités de chacun des premiers évidements.

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