Stent for Endovascular Procedures

A stent graft for deployment within a body vessel, comprising:

• a tubular graft having a proximal end and a distal end;
• at least one anchor stent attached to at least one end of the graft;
• at least one locking mechanism attached to the graft at or near the distal end of the graft;
• and
• a support stent, at least a portion of which lies within the tubular graft, having a proximal end and a distal end;
• where the support stent comprises at least one wire forming a first helical wire portion having a first translational direction about an axis of the support stent and a second helical wire portion having a second translational direction about the axis opposite the first translational direction;
• where, when the support stent is in a compressed delivery configuration, the support stent has a first length, and when the support stent is in an expanded deployed configuration, the support stent has a second length which is less than the first length;
• where, when in the delivery configuration, the support stent is attached to the graft only at or near the proximal end of the graft;
• and
• where the at least one locking mechanism is configured to engage the support stent in the deployed configuration.

A stent graft for deployment within a body vessel comprising:

• a tubular graft having a proximal end and a distal end;
• at least one anchor stent attached to the graft at or near the graft proximal end;
• at least one locking mechanism at or near the distal end of the graft having at least one engagement member;
• and
• a support stent, at least a portion of which lies within the tubular graft, having a proximal end and a distal end;
• where the support stent comprises at least one wire forming a first helical wire portion having a first translational direction about an axis of the support stent and a second helical wire portion having a second translational direction about the axis opposite the first translational direction;
• where, when the support stent is in a compressed delivery configuration, the support stent has a first diameter and length, and where when the support stent is in an expanded deployed configuration, the support stent has a second diameter and a second length, the second length less than the first length;
• where, when in the delivery configuration, the support stent is attached to the graft only at or near the proximal end of the graft;
• and
• where the at least one engagement member is configured to engage the support stent in the deployed configuration and substantially fix the second diameter and second length of the support stent.

A stent graft comprising:

• a tubular graft having a proximal end and a distal end;
• a support stent, at least a portion of which lies within the tubular graft, having a proximal end and a distal end;
• where when the support stent is in a compressed delivery configuration, the support stent proximal end is coupled only to the proximal end of the graft;
• a locking mechanism attached to the graft at the distal end of the graft having at least one engagement member configured to engage the support stent in an expanded deployed configuration and substantially fix the diameter and length of the support stent in the deployed configuration;
• and
• a capture mechanism operatively coupled to the support stent proximal end, the capture mechanism initially configured to retain the support stent proximal end in the delivery configuration, the capture mechanism actuatable to release the proximal end of the support stent.

A stent graft for deployment within a body vessel, comprising:

• a tubular graft having a proximal end and a distal end;
• at least one anchor stent attached to the graft at or near the proximal end of the graft;
• at least one locking ring, attached to the graft at or near the distal end of the graft, comprising at least one locking mechanism;
• a support stent, at least a portion of which lies within the tubular graft, having a proximal end and a distal end;
• where the support stent comprises at least one wire forming a first helical wire portion having a first translational direction about an axis of the support stent and a second helical wire portion having a second translational direction about the axis opposite the first translational direction;
• where, when the support stent is in a compressed delivery configuration, the support stent has a first diameter and a first length, and where when the support stent is in an expanded deployed configuration, the support stent has a second diameter which is greater than the first diameter and a second length which is less than the first length;
• where, when the support stent is in the deployed configuration, the support stent has a curvature which approximates a curvature of the body vessel;
• where, when in the delivery configuration, the support stent proximal end is attached only to the proximal end of the graft;
• and
• where the locking mechanism comprises at least one engaging member configured to engage the support stent in the deployed configuration and substantially fix the support stent at the second diameter and the second length.