Stent Delivery Catheter

摘要

A stent delivery catheter including a catheter tubing defining a lumen therethrough, a balloon disposed near a distal end of the catheter tubing and moving between deflated and inflated states, and proximal and distal balloon control bands concentrically arranged around respective proximal and distal end portions of the balloon. The proximal balloon control band has a proximal end located proximally of a proximal end of the balloon and a distal end located adjacent a proximal end of a received unexpanded stent. The distal balloon control band has a proximal end located adjacent a distal end of the received unexpanded stent and a distal end located distally of a distal end of the balloon. The balloon control bands each have a diametric cross-section larger than the balloon in an uninflated state and the unexpanded stent received over the balloon to impede axial movement of the unexpanded stent off of the balloon.

主权项

1. A balloon delivery catheter apparatus comprising:
a catheter tubing defining a lumen therethrough; a balloon disposed near a distal end of the catheter tubing and moving between deflated and inflated states; a core wire having a proximal end attached to the catheter tubing inside the lumen and extending distally away and substantially coaxially with the catheter tubing through the balloon to a distal free end; a coil disposed around the core wire, the coil having a proximal end attached to a distal end portion of the balloon; and a handle received by a proximal end of the catheter tubing, the handle comprising: a handle base defining a handle lumen therethrough; a collet received at least partially in the handle lumen at a distal end portion of the handle base, the collet defining a collet lumen therethrough; and a handle head releasably connected to the distal end portion of the handle base over the collet, the handle head defining an aperture axially aligned with the collet lumen and sized to receive the proximal end of the catheter tubing therethrough and at least partially in the collet lumen.