Trocar assembly with obturator design

Details Trocar assembly with obturator design Trocar assembly with obturator design

A - Human Necessities

61

B

A61B 17/34 (2006.01)

Patent

CA 2669754

An obturator for use in penetrating tissue includes an elongate member defining a longitudinal axis, and having a proximal end and a distal end, and a penetrating member adjacent the distal end of the elongate member. The penetrating member has a distal penetrating tip dimensioned to pass through tissue. The penetrating member defines an external wall leading toward the penetrating tip. The external wall includes a plurality of raised elements extending at least radially outwardly relative to the longitudinal axis and being in general longitudinal alignment. Adjacent raised elements are spaced along the longitudinal axis to thereby accommodate tissue displaced during passage of the penetrating member through tissue. The raised elements are dimensioned to be generally atraumatic to tissue. The raised elements may define an arcuate profile.

L'invention porte sur un obturateur de trocart de pénétration dans des tissus présentant: un axe longitudinal, une extrémité proximale, une extrémité distale et un élément pénétrant monté à l'extrémité distale de l'élément allongé. L'élément pénétrant comporte un embout dimensionné pour traverser les tissus, et une paroi extérieure aboutissant à l'embout de pénétration. Ladite paroi extérieure comporte plusieurs éléments saillants radialement vers l'extérieur, sensiblement alignés longitudinalement, espacés le long de l'axe longitudinal pour recevoir sans créer de traumatisme les tissus déplacés lors de la pénétration de l'élément dans les tissus, et pouvant présenter un profil courbe.

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