Blood compatible polymers and medical devices made therefrom
AssigneeBaxter Travenol Laboratories, Inc.
InventorsHenry M. Gajewski, Paul E. Measells
Life of this patent
Estimating the term…
Abstract
Blood-compatible, chlorine-free polymers such as a flexible, non-toxic, sterilizable polyester plastic formulation may contain from 5 to 70 percent by weight of a blood-extractable plasticizer such as di-2-ethylhexylphthalate, to cause blood which is stored in contact with the polymer to exhibit a surprisingly low hemolysis rate when compared with corresponding polymers which are free of the plasticizer. Accordingly, blood bags, tubing and other medical blood-contacting devices may be advantageously made from these polymers.
Claims6
The method of storing blood which comprises placing said blood for a period of days into a flexible, hemocompatible, sterilizable polyester plastic material which contains sufficient dioctylphthalate to cause a reduced plasma hemoglobin content of blood stored in contact therewith for 21 days, when compared with blood stored in contact with the same blood-compatible material free of dioctylphthalate.
Dependencies are inferred from the claim text.