Patent ID: 9474884
Filing Date: 2016-10-25
CPC Classification: A61B,A61M,Y10T

Claim Text:
1. A dilator and sheath assembly, comprising: a sheath comprising an elongate tubular sheath body, the elongate tubular sheath body comprising a sheath proximal end and a sheath distal end, the elongate tubular sheath body having an inner body radius, the sheath distal end being circumferentially continuous and having an inner distal radius, and the sheath proximal end comprising a sheath hub defining an aperture; and a dilator comprising an elongate dilator shaft comprising a dilator proximal end and a dilator distal tip, and a dilator hub at the dilator proximal end, the dilator distal tip comprising a radially enlarged dilator bump, wherein: the dilator bump comprises a proximal taper that increases in radius from the proximal to distal direction, and a distal taper that decreases radius from the proximal to distal direction, the dilator bump has a maximum radius at a point between the proximal taper and the distal taper, the maximum radius of the dilator bump being greater than the inner distal radius of the sheath distal end, and the dilator bump is configured to pass through the elongate tubular sheath body by radially stretching at least the circumferentially continuous sheath distal end.