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
Digital broadcasting system and method of processing data
Boundary acoustic wave device
Method and system of channel detecting and reporting, terminal, and management center
Analysis device and an analysis apparatus using the analysis device
Lighting elements
Method and system for automatically hiding irrelevant parts of hierarchical structures in computer user interfaces
Method for producing semiconductor substrate, semiconductor substrate, method for manufacturing electronic device, and reaction apparatus
  Randomly Featured Patents
Method and device for identifying qualified voter
Light quantity adjusting device, lens barrel and image pickup apparatus
Process for preparing a chewing gum composition with improved flavor perception
Security clip for joining a feed line to a cannula
Copying machine
Method of controlling robot in event of a power failure
Method of forming curved surfaces and the apparatus
Simple method for quantitative measuring the adhesion of platelets ex vivo
Brine type air conditioning apparatus
SPI devices and method for transferring data between the SPI devices