Expandable polymeric stent with memory and delivery apparatus and method
AssigneeQuanam Medical Corporation
InventorMichael Froix
Life of this patent
Estimating the term…
Abstract
A stent for use in a lumen defined by a wall of a vessel of a patient having a body. The vessel is comprised of a hollow substantially cylindrical member formed of a biocompatible composition. The composition incorporates at least one medical agent in a weight up to 90% of the total weight of the stent so that at least one medical agent is released from the composition of the stent into the vessel at a controlled rate extending over a period of time after the stent is inserted into the vessel.
Claims28
A stent for use in a lumen defined by a wall of a vessel of a patient having a body with the vessel therein, comprising a hollow substantially cylindrical member formed of a biocompatible composition, said composition being in the form of a polymer matrix, at least one medical agent in a weight up to 90% of the total weight of said member dispersed uniformly throughout said polymer matrix whereby when said stent is disposed in the lumen said at least one medical agent is released at a controlled release rate from the member into said vessel, it must be dissolved in the polymer matrix and thereafter diffuse through the polymer matrix, said controlled release rate extending over a period of time after said lumen stent is inserted into said and being controlled solely by the rate of diffusion of the medical agent from the stent.
A stent for use in a lumen defined by a wall of a vessel of a patient having a body with the vessel therein, comprising a hollow substantially cylindrical member formed of a biocompatible composition in the form of a polymer matrix and having an outer surface, said polymer matrix carrying at least one medical agent uniformly dispersed in said polymer matrix and which is at least partially disposed below the surface of said member so that said at least one medical agent is released from the member by being dissolved and then diffusing through the polymer matrix at controlled release rate extending over a period of time after said stent is inserted into the lumen, said member being free of biodegradable material whereby said controlled release is determined solely by the rate diffusion of the medical agent from the stent.
Dependencies are inferred from the claim text.