Expandable polymeric stent with memory and delivery apparatus and method
Patent 5163952 Issued on November 17, 1992. Estimated Expiration Date: 
September 14, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
September 14, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesBiocompatible coating for solid surfaces Infection-resistant compositions, medical devices and surfaces and methods for preparing and using same Patent #: 5019096 InventorApplicationNo. 582521 filed on 09/14/1990US Classes:623/1.18, Having shape memory623/1.42Drug deliveryExaminersPrimary: Isabella, David J.Assistant: Brittingham, Debra S. Attorney, Agent or FirmForeign Patent References
International ClassA61F 002/06AbstractSelf-restrained stent for use in a lumen of a vessel of a patient having a body with the vessel therein, comprising a substantially cylindrical member formed of a plastic material having a built-in elastic predetermined diameter and having a memory provided therein of a diameter greater than the predetermined diameter. The plastic is characterized in that it will attempt to assume the greater diameter in its memory upon occurrence of one or more of the following conditions:(a) adsorption of heat by the plastic material;(b) adsorption of a liquid by the plastic material; and(c) a change in the pH in the liquid in which the plastic member is disposed. | |
