Catheter Assemblies and Methods for Stabilizing a Catheter Assembly Within a Subintimal Space

摘要

Catheter assemblies include a stabilization mechanism disposed at a distal end of the catheter assembly for stabilizing the catheter assembly within a subintimal space. The stabilization mechanism includes a self-expanding support structure that is slidably positionable within an inflatable balloon. The catheter assemblies include an outer shaft which has the balloon at a distal end thereof and an inner shaft which has the support structure mounted on a distal end thereof. The inner shaft is slidably disposed within a lumen of the outer shaft and has a first configuration in which the support structure is held in a compressed state within the outer shaft and a second configuration in which the support structure is permitted to return to an expanded state within the inflatable balloon. In the expanded state, the stabilization mechanism has a flattened laterally-extending profile.

主权项

1. A catheter assembly comprising:
an outer shaft including an inflatable balloon disposed at a distal end thereof; an inner shaft including a self-expanding support structure mounted on a distal end thereof, the inner shaft being disposed within a lumen of the outer shaft such that the inner shaft is movable relative to the outer shaft, wherein in a first configuration the support structure is held in a compressed state within the outer shaft and in a second configuration the support structure is permitted to return to an expanded state within the inflatable balloon such that the inflatable balloon has a flattened laterally-extending profile dictated by the support structure in the expanded state for stabilizing the catheter assembly within a subintimal space.