Peelable atraumatic tip and body for a catheter or sheath

Details Peelable atraumatic tip and body for a catheter or sheath Peelable atraumatic tip and body for a catheter or sheath

A - Human Necessities

61

M

A61M 25/098 (2006.01)

Patent

CA 2604709

A splittable/peelable tubular body (2) of a catheter or sheath wherein the tubular body (2) has a splittable/peelable atraumatic tip (14) is disclosed. The atraumatic tip (4) is generally softer than the tubular body (2). The tubular body (2) and atraumatic tip (4) each comprise a peel mechanism longitudinally extending along their respective lengths. The peel mechanisms are formed by longitudinally extending regions of interfacial bonding (11) between first and second longitudinally extending strips (8, 10) of polymer material. Each strip (8, 10) forms at least a portion of an outer circumferential surface of the tubular body (2) and atraumatic tip (4). A region of stress concentration extends along the region of interfacial bonding. The stress concentration facilitates the splitting of the tubular body (2) and atraumatic tip (4) along their respective peel mechanisms.

L'invention concerne un corps tubulaire détachable/pelable (2) d'un cathéter ou d'une gaine, dans lequel le corps tubulaire présente une pointe atraumatique détachable/pelable (14). La pointe atraumatique (4) est généralement plus souple que le corps tubulaire (2). Le corps tubulaire et la pointe atraumatique (4) comprennent chacune un mécanisme de pelage s'étendant le long de leurs longueurs respectives. Les mécanismes de pelage sont formés par des régions, s'étendant longitudinalement, de liaison interfaciale (11) entre une première et une seconde bandes longitudinales (8, 10) d'un matériau polymère. Chaque bande (8, 10) forme au moins une portion d'une surface circonférentielle externe du corps tubulaire (2) et de la pointe atraumatique (4). 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 tubulaire (2) et de la pointe atraumatique (4) le long de leurs mécanismes de pelage respectifs.

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