Body for a catheter or sheath

A - Human Necessities – 61 – M

Patent

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Details

A61M 25/00 (2006.01) A61L 29/16 (2006.01) B29C 43/30 (2006.01) B29C 45/16 (2006.01) B29C 47/06 (2006.01) A61L 29/02 (2006.01) A61L 29/04 (2006.01)

Patent

CA 2604715

A body (2) for a catheter or sheath is disclosed. The body (2) includes strips (8, 10) formed longitudinally from the proximal (6) portion of the body (2) to the distal (4) portion of the body (2). The strips are formed of different materials. The strips can have different radiopacities, or can be splittable/peelable. The splittable/peelable body comprises a peel mechanism longitudinally extending along its respective length. The peel mechanism can be formed by longitudinally extending regions of interfacial bonding between first and second longitudinally extending strips of polymer material. A region of stress concentration extends along the region of interfacial bonding. The stress concentration facilitates the splitting of the body (2) along its peel mechanism. The polymer material of the first strip (8) can have a greater amount of radiopaque filler than the polymer material of the second strip (10). Each strip forms at least a portion of an outer circumferential surface of the body (2).

L'invention concerne un corps (2) pour un cathéter ou une gaine. Le corps (2) comprend des bandes (8, 10) formées longitudinalement à partir de la portion proximale (6) du corps (2) vers la portion distale (4) du corps (2). Les bandes sont formées de matériaux différents. Elles peuvent présenter des radio-opacités différentes ou peuvent être détachables/pelables. Le corps détachable/pelable comprend un mécanisme de pelage s'étendant le long de sa longueur respective. Le mécanisme de pelage peut être formé par des régions, s'étendant longitudinalement, de liaison interfaciale entre la première et la seconde bandes longitudinales de matériau polymère. Une région de concentration des contraintes s'étend le long de la région de liaison interfaciale. La concentration des contraintes facilite le détachement du corps (2) le long de son mécanisme de pelage. Le matériau polymère de la première bande (8) peut présenter une plus grande quantité de charge radio-opaque que le matériau polymère de la seconde bande (10). Chaque bande forme au moins une portion d'une surface circonférentielle extérieure du corps (2).

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