Patent ID: 6743206
Filing Date: 2004-06-01
Classification: A61B

Abstract:
An endoscopic needle assembly, comprising:a) an inner tube having a proximal end, a distal end, and an interior wall defining a first lumen, said first lumen forming a fluid pathway and having a first lumen diameter; b) an outer tube having a proximal end, a distal end, and an interior wall defining a second lumen, said outer tube surrounding said inner tube such that said inner tube can move longitudinally relative to said outer tube within said second lumen of said outer tube; c) a needle connected to said distal end of said inner tube; d) a wire having a proximal end and a distal end and having a wire diameter smaller than said first lumen diameter of said inner tube, said distal end of said wire coupled to said interior wall of said inner tube at or adjacent said distal end of said inner tube and said proximal end of said wire connected to said inner tube along said interior wall of said inner tube at a location between said proximal end and said distal end of said inner tube, said wire providing the segment of the inner tube between the locations at which said wire is connected to said inner tube with a measure of rigidity in tension and compression; and e) a handle means coupled to said proximal end of said inner tube and to said proximal end of said outer tube for moving one of said inner tube and said outer tube relative to the other of said inner tube and said outer tube.