IP Library › Granted Patent US 8,333,797
Granted Patent B2
US 8,333,797 · App. 12/564,689 · Granted Dec 18, 2012

Stent-graft delivery system

Assignee: Medtronic Vascular, Inc.
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Quick Facts
Patent No.
US 8,333,797
App. No.
12/564,689
Granted
Dec 18, 2012
Kind
B2
Abstract

A method of delivering a stent-graft includes mounting the stent-graft on a pushrod; radially constraining the stent-graft within a sheath; securing a crown portion of the stent-graft to the pushrod with a retainer structure of a stent-graft retainment system; retracting the sheath to expose the crown portion of the stent-graft; and further retracting the sheath to cause the retainer structure to release the crown portion from the pushrod thus deploying the stent-graft. The retainer structure releases the stent-graft automatically as a result of the retraction of the sheath.

Claims (11)

1. A method comprising:

mounting a stent-graft on a pushrod;

radially constraining said stent-graft within a sheath;

securing a crown portion of said stent-graft to said pushrod with a retainer structure of a stent-graft retainment system;

retracting said sheath to expose said crown portion of said stent-graft such that said crown portion is not constrained within said sheath, wherein said crown portion remains secured to said pushrod after said crown portion is exposed; and

further retracting said sheath to release said crown portion from said retainer structure and said pushrod.

2. The method of claim 1 wherein said stent-graft self-expands upon said release of said crown portion from said pushrod.

3. The method of claim 1 wherein said step of further retracting said sheath comprises a trigger trip surface of said sheath contacting a trigger portion of said stent-graft retainment system.

4. The method of claim 3 wherein said step of further retracting said sheath further comprises said trigger trip surface retracting said trigger portion to retract said retainer structure.

5. The method of claim 4 wherein said retainer structure is retracted to release said crown portion from said retainer structure.

6. The method of claim 3 wherein a locking feature is coupled to said trigger portion such that when said trigger trip surface contacts said trigger portion, said locking feature extends longitudinally outside of said sheath.

Continuity (2)
Division 10351055 · Jan 24, 2003
Related Publication 20100010617A1 · Jan 14, 2010