Miniaturized medical brush

Details Miniaturized medical brush Miniaturized medical brush

A - Human Necessities

61

B

A61B 17/22 (2006.01) A61M 5/00 (2006.01) A61B 17/32 (2006.01)

Patent

CA 2256131

A miniaturized brush particularly adapted for medical use formed at the distal end of an elongated brush drive shaft having a hollow lumen formed therein for introduction over a guidewire. The brush drive shaft is enclosed in the lumen of a brush delivery catheter and other components of a brush sub-assembly adapted to deliver infusate through the catheter lumen and to be coupled to a drive motor unit for rotating the brush drive shaft and brush. The brush bristles of the distal brush are adapted to be garaged in a distal end section of the brush delivery catheter lumen during introduction through a body lumen. The brush bristles are formed of a thin sheet of rigid plastic material that is shaped to have a plurality of fringe elements extending in parallel from a mounting web. The mounting web is wound about and attached to a distal end section of the drive shaft outer circumference so that the fringe elements extend outward from the drive shaft surface and obliquely of the drive shaft axis. Preferably, proximal and distal spiral brush sections are formed in this manner so that fluids are impelled distally and proximally, respectively, between the proximal and distal brush sections as infusate is delivered.

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