Method and apparatus for placing a catheter within a vasculature

摘要

A catheter for insertion into vasculature of a patient to a target area in the vasculature includes a hollow inner shaft, a non-occluding self-expandable scaffold coupled to the distal end of the inner shaft and disposed at the distal end of the inner shaft, and a hollow outer shaft. The outer shaft is slidable over the inner shaft and scaffold such that the scaffold is in a non-expanded state when the outer shaft is around the scaffold. The outer shaft has a state where the distal end of the outer shaft remains near the target area without the inner shaft and the scaffold being within the outer shaft. The inner shaft and the scaffold are removable through the proximal end of the outer shaft while the distal end of the outer shaft remains near the target area.

主权项

1. A catheter apparatus for insertion into vasculature of a patient and to a target area in the vasculature, comprising:
a hollow inner shaft with a distal end and a proximal end; a removable non-occluding self-expandable scaffold coupled to the distal end of the inner shaft and disposed at the distal end of the inner shaft, a portion of the distal end of the inner shaft being disposed at least in part inside the self-expandable scaffold; and a hollow outer shaft with a distal end and a proximal end, the outer shaft being slidable over the inner shaft and the scaffold such that the scaffold is in a non-expanded state when the outer shaft is disposed around the scaffold, the outer shaft having a state where the distal end of the outer shaft remains near the target area without the inner shaft and the scaffold being disposed within the outer shaft, wherein the inner shaft and the scaffold are configured to be removable through the proximal end of the outer shaft while the distal end of the outer shaft remains near the target area, and wherein the outer shaft is configured for passing at least one medical device to the target area in the vasculature; and wherein the scaffold is configured to center the distal end of the inner shaft along a central longitudinal axis of the scaffold when the scaffold is expanded.