Hydrophilic coatings for medical implements
AssigneeLifeScan, Inc.
InventorKoon-wah Leong
Life of this patent
Estimating the term…
Abstract
Compositions, methods, devices and kits utilizing water-based hydrophilic coating formulations on medical implements. The composition for applying a coating comprises a sulfonated polyester, water, and a surface active agent. Methods for coating a medical implement comprise providing an aqueous dispersion comprising sulfonated polyester and surface active agent, contacting the medical implement with the aqueous dispersion, and drying the medical implement. Methods for acquiring a sample of bodily fluid from a patient comprise coating a needle with a sulfonated polyester, penetrating the needle into the patient, and drawing bodily fluid through the needle.
Claims21
1-40. (canceled)
A method for acquiring a sample of bodily fluid from a patient, comprising;
- (a) coating a needle with a composition comprising a sulfonated polyester;
- (b) penetrating said needle into said patient;
- and
- (c) drawing said bodily fluid through said needle.
The method of claim 30, wherein said providing said aqueous dispersion comprises providing a composition comprising:
- (a) between approximately 0.5% and approximately 30% of sulfonated polyester by weight;
- (b) between approximately 0.1% and approximately 5% of surface active agent by weight;
- and
- (c) between approximately 65% and approximately 99.4% of water by weight.
A method for acquiring a sample of bodily fluid from a patient, comprising;
- (a) coating a needle with a composition comprising a sulfonated polyester;
- (b) penetrating said needle into said patient;
- and
- (c) drawing said bodily fluid through said needle.
60-65. (canceled)
Dependencies are inferred from the claim text.