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US 9,427,352 B2Granted
Hydration prevention coating
AssigneeBayer HealthCare LLC
InventorChristopher A. Stout
Life of this patent
Estimating the term…
Abstract
Occlusion devices and delivery systems are described in which a polymerizing oil is used to protect a hydrogel from premature swelling. In an embodiment, a delivery system includes an occlusion device releasably coupled within a catheter sheath. The occlusion device includes an expandable implant and a hydrogel. An at least partially oxidized polymerizing oil is inside a lumen of the catheter sheath between the distal end of the catheter sheath and the hydrogel.
Claims18
A delivery system comprising:
- a catheter sheath having a distal end, a proximal end, and a lumen therebetween;
- an occlusion device releasably coupled within the catheter sheath, the occlusion device comprising an expandable implant and at least one hydrogel sleeve on the expandable implant including a distal hydrogel sleeve having a distal end;
- and
- a polymerizing oil inside a portion of the lumen of the catheter sheath between the distal end of the catheter sheath and the distal end of the distal hydrogel sleeve, wherein the polymerizing oil is at least partially oxidized to form a plug within the catheter sheath, at a location distal to the distal hydrogel sleeve.
1 more element
Dependencies are inferred from the claim text.