Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Reexamination Certificate
2008-07-15
2008-07-15
Desanto, Matthew F (Department: 3763)
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
C604S113000, C607S104000
Reexamination Certificate
active
07399291
ABSTRACT:
A catheter for treatment of chronic total occlusions includes an occlusion breach device, a catheter body made of a temperature-dependent softening, shape-memory, thermoplastic polymer having a first flexible state and a second stiff state. The catheter body has a heat transfer conduit and a conduit for slidably receiving the breach device. A heat-transferring device selectively changes a temperature of the heat transfer conduit to, thereby, change stiffness of the catheter body between the two states. To treat a CTO with the catheter, it is warmed above the glass-transition temperature and below the melting-temperature to make the catheter flexible. The catheter has a shape when inserted at the occlusion site and is cooled to, thereby, stiffen. Breaching of the occlusion is assisted with the stiff catheter. The catheter is removed by warming the polymer. Also provided is a method for manufacturing such a selectively stiffening catheter.
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Anderson Cory
Vo Minh
Desanto Matthew F
Mayback Gregory L.
Mayback & Hoffman P.A.
Smiley Scott D.
Syntheon, LLC.
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