Polymer coatings on medical devices

US8343212B2 · kind B2 · utility

Assignee

• Biotectix LLC · US

Inventors

• Christopher John Pickett · Dereham, GB
• Timothy James Boote · Cambridge, GB
• Saad Khalil Ibrahim · Norwich, GB
• Jane Marie Knott · Cambridge, GB
• John Douglas Tolland · Cambridge, GB

Key dates

• Filing date: May 15, 2008
• Grant date: Jan 1, 2013
• Expiry date: Feb 27, 2029

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31692
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A medical device, for example a stent, has a surface which in use contacts body tissue, wherein said surface has on it a biocompatible coating layer comprising a polymer having covalently bound allyl-terminated pendent groups, said pendent groups comprising a moiety selected from -0-CH2—CH═CH2—S—CH2—CH═CH2—S(=0)-CH2—CH═CH2—Se—CH2—CH═CH2 and —Se (=0 J-CH2—CH═CH2. This surface has good biocompatibility and can bind strongly to a metallic surface. The polymer may be made from an electropolymerisable monomer, e.g. a pyrrole.