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US 11,534,532 B2Granted
Hydrophobically encased tungsten
AssigneeCook Medical Technologies LLC
InventorsDavid A. Drewes, Jr., Brian Tankersley
Life of this patent
Estimating the term…
Abstract
Disclosed herein are compositions of matter for inclusion in a medical device for visualization purposes. Such compositions may include a radiopaque metal, such as tungsten, within a functionalized hydrophobic polymer. Methods of making devices incorporating such elements are also disclosed.
Claims19
A medical device comprising:
- a body portion comprising a first polymeric material, and a visualization portion comprising a second polymeric material more hydrophobic than the first polymeric material, the visualization portion comprising a plurality of particles comprising at least one radiopaque metal, the plurality of particles being in direct contact with and dispersed in the second polymeric material, the visualization portion being in direct contact with an outer surface of the body portion;
- wherein after twelve months of exposure to 60 degrees Celsius and 75% relative humidity, the visualization portion retains at least 40% of a tensile load of the visualization portion before the twelve months of exposure.
A medical device, comprising:
- a body portion comprising a first polymeric material, and
- a visualization portion comprising a second polymeric material more hydrophobic than the first polymeric material, the visualization portion comprising a plurality of particles comprising at least one radiopaque metal, the plurality of particles being in direct contact with and dispersed in the second polymeric material, the second polymeric material being in direct contact with the first polymeric material,
- wherein the visualization portion retained the same tensile load and displacement characteristics after three months of exposure to 60 degrees Celsius and 75% relative humidity.
Dependencies are inferred from the claim text.