Patent ID: 8016871
Filing Date: 2011-09-13
Classification: A61F

Abstract:
1. A stent delivery device for delivering a stent to a treatment site in a body lumen, the device comprising: a catheter shaft having a proximal end and a distal end; an expandable member coupled with the catheter shaft near the distal end; a stent positionable over the expandable member in an unexpanded configuration and being radially expandable to an expanded configuration, the stent comprising a plurality of stent segments which are axially separable from each other while the stent segments are in the unexpanded configuration and positioned over the expandable member; and a constraining sheath coupled to the catheter shaft and positionable to engage a remainder group of the stent segments, wherein the remainder group comprises at least one stent segment, wherein a selected group of stent segments is unconstrained to allow expansion thereof at the treatment site while the remainder group of stent segments is constrained from and axially separable from the selected group of stent segments to form an axial gap between the remainder group of stent segments and the selected group of stent segments, wherein the selected group of stent segments comprises at least two stent segments and is released from the delivery device so that the at least two stent segments are expandable simultaneously by the expandable member while the expandable member carries the remainder group of stent segments in the unexpanded configuration.