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

Image Number 9 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
Digital microwave radio link with adaptive data rate
Incentive based recommendation method for mobile station content
Session transfer method, application server, and communications system
Establishing a graphical user interface (`GUI`) theme
Cartridge for separating analyte from mixture, comprising dispensing and receiving chambers and insert
Passive translational velocity measurement from optical information
Curable inks comprising surfactant-coated magnetic nanoparticles
  Randomly Featured Patents
Semiconductor device and a method for fabricating a semiconductor device
Method for determining telephone dial pulse parameters independently of subscriber line length
Electronic part mounting device
Earring back device
Adsorbent for serum amyloid protein
Flat compass for marking large arcsand circles
Normalized relative humidity process
Handover from a microcell layer to a macrocell layer in a two-layer cell of a telecommunication network
Ultrasound imaging system with pixel oriented processing
Low frequency asset tag tracking system and method