Balloon delivery apparatus and method for using and manufacturing the same

摘要

A balloon delivery catheter apparatus 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 a core wire having a proximal end attached to the catheter tubing inside the lumen and extending distally away and substantially co-axially with the catheter tubing through the balloon to a distal free end. Proximal and distal balloon control bands are concentrically arranged around respective proximal and distal end portions of the balloon. A coil disposed around the core wire has a proximal end attached to at least one of the distal end portion of the balloon and the distal balloon control band.

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 co-axially with the catheter tubing through the balloon to a distal free end; proximal and distal balloon control bands concentrically arranged around respective proximal and distal end portions of the balloon, each balloon control band comprising an elastic material that expands during inflation of the balloon and contracts upon deflation of the balloon, the balloon control bands impeding expansion of the proximal and distal end portions of the balloon and assisting deflation of the balloon after balloon inflation; a coil disposed around the core wire, the coil having a proximal end attached to at least one of the distal end portion of the balloon and the distal balloon control band; and a balloon support tube co-axially disposed over the core wire and within the balloon, wherein the balloon support tube prevents compression of the balloon below a threshold diameter; and a laser activated low density polyethylene bonding portion abutting and interposed between the coil and each of the distal end portion of the balloon and the distal balloon control band, the laser activated low density polyethylene bonding the coil and one or more of the balloon and the distal balloon control band, the laser activated low density polyethylene bonding portion having a first state before laser activation and a second state after activation, wherein the laser activated low density polyethylene bonding portion is unbonded to the coil in the first state and the laser activated low density polyethylene bonding portion is bonded to the coil and extending into spaces defined by the coil in the second state; wherein the control bands each have a diametric cross-section larger than the balloon in its uninflated state and an unexpanded stent received over the balloon to impede axial movement of the unexpanded stent off of the balloon.