| Patent application number | Description | Published |
|---|
| 20100036478 | Method Of Improving Fracture Toughness Of Implantable Medical Devices Through Annealing - Methods of fabricating a polymeric implantable device with improved fracture toughness through annealing are disclosed herein. A polymeric construct is annealed with no or substantially no crystal growth to increase nucleation density. After the annealing, crystallites are grown around the formed nuclei. An implantable medical device, such as a stent, can be fabricated from the polymer construct after the crystallite growth. | 02-11-2010 |
| 20100038822 | Fracture Toughness Of Medical Devices With A Stereocomplex Nucleating Agent - Methods of fabricating a polymeric implantable device from a PLLA/PDLA blend such as a stent with improved fracture toughness are disclosed. The blend is melt processed to allow formation of stereocomplex crystallites, which are nucleation sites for crystal growth. A polymer construct is formed from the melt processed blend and device is formed from the polymer construct. The stereocomplex crystallites result in an in increase in nucleation density and reduced crystal size, which increases fracture toughness of the formed device. | 02-18-2010 |
| 20100251838 | Fixture for Mechanical Analysis of a Hollow Tube - A test fixture for use with a Dynamic Mechanical Analyzer (DMA) restrains a hollow cylindrical tube for purposes of performing either a tensile or transverse/bending load test. The fixture includes a clamp that is configured to restrain the tube without imparting a preload or changing a mechanical property of the tube. | 10-07-2010 |
| 20110022155 | Biodegradable Stent With Adjustable Degradation Rate - A biodegradable polymeric stent made from poly(L-lactide) and a low concentration of L-lactide monomer is disclosed. The concentration of L-lactide is adjusted to provide a degradation behavior that is suitable for different treatment applications including coronary, peripheral, and nasal. | 01-27-2011 |
| 20110022163 | Implantable Medical Device Comprising Copolymer Of L-Lactide With Improved Fracture Toughness - The present invention relates to implantable medical devices comprising a L-lactide-constitutional unit-containing copolymer having a wt % percent crystallinity of 40% or less. | 01-27-2011 |
| 20110062638 | Controlling Crystalline Morphology Of A Bioabsorbable Stent - Methods to expand polymer tubing with desirable or optimum morphology and mechanical properties for stent manufacture and fabrication of a stent therefrom are disclosed. | 03-17-2011 |
| 20110065825 | Method To Minimize Molecular Weight Drop Of Poly(L-Lactide) Stent During Processing - A method to reduce or minimize the reduction in molecular weight of a stent during processing is disclosed. The stent has a scaffolding including a polymer formulation comprising PLLA and polymandelide. The polymandelide reduces the molecular weight drop during processing, particularly during sterilization. The stent scaffolding can further include one or more additional stabilizing agents that additionally reduce the molecular weight drop during processing. | 03-17-2011 |
| 20110260352 | Stabilizing Semi-Crystalline Polymers To Improve Storage Performance Of Medical Devices - Methods are disclosed for improving the storage performance of polymeric stents that reduce or eliminate the effects of long term aging on the properties of the stents. A polymeric stent or a polymeric tube from which a stent is made is heated to a temperature between ambient and the glass transition temperature of the polymer for a period of time. The heating causes densification or an increase in density of the polymer which stabilizes the properties of the polymer in later processing steps and storage. The stent can be made from a polymeric tube that is expanded at a temperature above the glass transition temperature and cooled to maintain an expanded diameter. | 10-27-2011 |
