Abstract:
A formulation for generating an adhesion barrier that includes a plurality of particles or a dry powder that is made of a polymer combination of at least one biodegradable polymer and at least one water soluble polymer is disclosed. Methods of making and delivering the formulation are further disclosed. The formulation of particles is deposited on a surface of internal body tissue and the deposited formulation absorbs moisture from the tissue and forms a film over the surface. The film acts as an adhesion barrier by reducing or preventing adhesion of the surface to other body tissue.
Abstract:
Laser machining polymer tubing sections to form stents such that the power of the laser machining is adjusted for each tubing section to obtain repeatable strut widths for stents formed from different tubing sections is disclosed. A threshold power for laser machining each section is determined and the power used for machining each section is based on the threshold power.
Abstract:
A solution of deuterated water containing a riboflavin-based photosensitizer is provided in order to extend lifetimes of UVA/Rf photo-generated intra-stromal singlet oxygen, in combination with UVA delivery profiles of pulsing, fractionation, and optionally auxiliary stromal/Rf hyper-oxygenation in order to accelerate protein cross-linking density rates in ocular tissue. A 100% deuterated water solution with 0.1% riboflavin in solution increases singlet oxygen lifetimes by at least an order of magnitude without inducing endothelial cell apoptosis, thereby also permitting use of some combination of lower percentages of deuterated water, lower concentrations of riboflavin or lower dosages of UVA on intact (un-debrided) epithelium for equivalent cross-link densities compared to current acceptable corneal cross-linking procedures. Lower concentrations of deuterated water with regular water, for example, yields shorter singlet oxygen lifetimes in approximately linear proportion to concentration, which are considered acceptable in therapies known or being developed in the art of corneal cross-linking.
Abstract:
Methods for increasing the fracture resistance of a polymer stent's drug-polymer coating and scaffolding including applying a coating and crimping using techniques that increase the resistance to fracture in the coating layer and scaffolding and scaffolding.
Abstract:
The present invention provides an implantable article comprising an amorphous terpolymer and a semi-crystalline polymer. The amorphous terpolymer can be admixed with the semi-crystalline polymer or form a block copolymer with the semi-crystalline polymer.
Abstract:
A stent made from an ultra high molecular weight bioabsorbable polymer is disclosed herein. The bioabsorbable polymer can have a Mw greater than 1 million g/mole or greater than 2 million g/mole. Methods of making the ultra high molecular weight polymer stent without degrading the molecular weight are further disclosed.
Abstract:
This invention relates to blends of high, optionally medium, and low molecular weight polyesters where at least the low molecular weight polyester is substituted with an acidic moiety, the biodegradation of the blends being controllable by selection of the mean molecular weigh of each fraction, the quantity of each fraction in the blend and the amount and pKa of the acidic moiety(ies).
Abstract:
Various embodiments of the present invention include implantable medical devices such as stents manufactured from polymers, and more particularly, biodegradable polymers including biodegradable polyesters. Other embodiments include methods of fabricating implantable medical devices from polymers. The devices and methods utilize one or more stabilizers, where each stabilizer may be chosen from the following categories: free radical scavengers, peroxide decomposers, catalyst deactivators, water scavengers, and metal scavengers.
Abstract:
The invention herein relates to a surface protective dendritic polymer composition and to the cross-linked surface protective coating formed therefrom.