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

Image Number 14 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 element formed on SOI substrate comprising a hollow region, and having capacitors in an electric field alleviation region
Method and computed tomography device and data storage medium for performing a dynamic CT examination on a patient
Method and system for filtering noises in an image scanned by charged particles
Perception-based artifact quantification for volume rendering
Detecting the type of NAT firewall using messages
Method and apparatus for producing homogeneous magnetic fields
  Randomly Featured Patents
Designing interconnect fabrics
Method and apparatus for blood withdrawal and infusion using a pressure controller
Safety shield window insert
Locating device
Method of fabricating thin film transistor
Adapter for quad flat pack failure-analysis socket
Non-ferrous group VIII aluminum coprecipitated hydrogenation catalysts
Combinatorial libraries of monosaccharides
Therapeutic laser treatment method
Device and method for the purification of polluted water