Patent ID: 6572593
Filing Date: 2003-06-03
Classification: A61B,A61F

Abstract:
A deflectable needle assembly for accessing a physiological site in a body, wherein said access to said physiological site is obstructed by a non-penetrable object, said deflectable needle assembly comprising a proximal end and a distal end and:a cannula, said cannula having a lumen, a proximal end, a distal end and a beveled distal tip; a catheter, said catheter having a lumen, a proximal end, a curved distal end, and a beveled distal tip, wherein said catheter can be inserted within said lumen of said cannula such that said distal end and said distal tip of said catheter can be protracted distally beyond, or retracted proximally within, said distal end of said lumen of said cannula and said catheter can be axially rotated within said lumen of said cannula; and a stylet, said stylet having a proximal end and a distal end and said stylet can be inserted in said lumen of said catheter, wherein said curved distal end of said catheter is straight when said catheter is retracted proximally within said distal end of said lumen of said cannula.