Resources Contact Us Home
Photopolymerizable biodegradable hydrogels as tissue contacting materials and controlled-release carriers

Image Number 15 for United States Patent #5626863.

Hydrogels of polymerized and crosslinked macromers comprising hydrophilic oligomers having biodegradable monomeric or oligomeric extensions, which biodegradable extensions are terminated on free ends with end cap monomers or oligomers capable of polymerization and cross linking are described. The hydrophilic core itself may be degradable, thus combining the core and extension functions. Macromers are polymerized using free radical initiators under the influence of long wavelength ultraviolet light, visible light excitation or thermal energy. Biodegradation occurs at the linkages within the extension oligomers and results in fragments which are non-toxic and easily removed from the body. Preferred applications for the hydrogels include prevention of adhesion formation after surgical procedures, controlled release of drugs and other bioactive species, temporary protection or separation of tissue surfaces, adhering of sealing tissues together, and preventing the attachment of cells to tissue surfaces.

  Recently Added Patents
Semiconductor device and fabrication method
Titanium compounds and complexes as additives in lubricants
Fluid conduit with PTC fabric heating
Liquid crystal display and method of driving the same
Device and method to automatically configure port forwarding
Memory system with data line switching scheme
Method and apparatus for accessing and downloading information from the internet
  Randomly Featured Patents
Adjustable-free optical signal receiver
High-voltage surge eliminator
Web browser with multilevel functions
Stable NO-delivering compounds
Automated decoupler for rail cars
Chalcone linked pyrrolo[2,1-c][1, 4]benzodiazepine hybrids as potential anticancer agents and process for the preparation thereof
Tandem gas metal arc welding
Process cartridge and electrophotographic image forming apparatus
Milling device for cutting up road surfaces
Cat-shaped container for cosmetic and toilet products