Patent ID: 9192406
Filing Date: 2015-11-24
Classification: A61B,A61M

Abstract:
1. A method of performing a procedure at a treatment site in the lumen of a blood vessel comprising: providing an elongate tubular shaft having distal and proximal ends and a sidewall defining a lumen, the elongate tubular shaft having a proximal bend, a distal bend and a hinge element, the proximal bend defining a first undeflected angle prior to insertion of the elongate tubular shaft into the lumen of the blood vessel, the distal bend defining a second undeflected angle prior to insertion of the elongate tubular shaft into the lumen of the blood vessel that is greater than the first undeflected angle, the proximal and distal bends being oriented in a first direction, the hinge element being spaced proximally of the distal end of the elongate tubular shaft and distally of the distal bend, the distal bend being positioned between the proximal bend and the hinge element, a distal portion of the elongate tubular shaft extending between the hinge element and the distal end of the elongate tubular shaft and a mid portion of the elongate tubular shaft extending between the hinge element and the proximal bend, the distal portion including a window extending through the sidewall between the hinge element and the distal end of the elongate tubular shaft; advancing the elongate tubular shaft through the lumen of the vessel to the treatment site, wherein the proximal bend has a first deflected angle greater than the first undeflected angle and the distal bend has a second deflected angle greater than the second undeflected angle when the elongate tubular shaft is at the treatment site; orienting the elongate tubular shaft in a position where the proximal and distal bends cause the distal portion of the elongate tubular shaft to bend with respect to the mid portion of the elongate tubular shaft at the hinge element in a second direction opposite the first direction to urge the window against a wall of the vessel in a desired location at the treatment site; and performing a procedure through the window at the treatment site with a working element disposed within the lumen of the elongate tubular shaft while the window is urged against the wall of the vessel.