Patent ID: 8926571
Filing Date: 2015-01-06
Classification: A61M

Abstract:
1. A hemodialysis catheter assembly, comprising: a housing that extends along a longitudinal axis (A-A) from an open, proximal end to an opposite, open, distal end thereof, said housing having a hollow, interior space that communicates with the openings of said proximal and distal ends; a first, externally-threaded screw lock attached to, and circumposed about, said distal end; collapsible tubing that extends along axis (A-A) within said interior space of the housing from a proximal end to an opposite, distal end thereof, said proximal and distal ends of said tubing being attached to said housing, said tubing comprising a cylindrical wall that defines a lumen, said lumen being in communication with the openings of said proximal and distal ends of said housing; a flexible catheter lead, said lead having a distal end attached to the proximal end of the housing and an opposite, free, proximal end, said lead having a lumen in communication with the lumen of said collapsible tubing; a dialysis extension tubing subassembly, said subassembly being attachable to the distal end of the housing, and said subassembly including a hemodialysis needle subassembly, said subassembly including pinch means disposed intermediate the proximal and distal ends of said collapsible tubing within the interior space of the housing at a distance less than or equal to D from the distal end of the housing, said pinch means being alterable between a normally pinched condition wherein a portion of the wall of said collapsible tubing is collapsed inwardly and sufficiently to occlude and prevent blood flow through said collapsible tubing, and an unpinched condition wherein the lumen of said collapsible tubing is not occluded, said pinch means comprising a pair of spring clips attached to the interior of the housing and on opposite sides of said collapsible tubing, said clips being movable between a first, pinched position in which the clips press toward each other and against said opposite sides of said collapsible tubing with sufficient force to collapse said collapsible tubing and occlude the lumen thereof if said needle and said sleeve are not present within said lumen, and a second, retracted position in which said collapsible tubing is not collapsed and the lumen thereof is not occluded, said second, retracted position being obtainable by axial insertion of either said needle or said sleeve into the lumen of said collapsible tubing.