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
Matching engine for comparing data feeds with user profile criteria
Methods and apparatus for deactivating internal constraint curves when inflating an N-sided patch
Systems and methods for identifying malicious domains using internet-wide DNS lookup patterns
High-density fiber optic modules and module housings and related equipment
Pre and post-paid real time billing convergence system
Charged particle beam apparatus
Flexible lighting devices
  Randomly Featured Patents
Full flow breakaway coupling
Filter for airbag inflator using variable expanded metal
Locking power clamp
Portable campfire holder
Semiconductor sensors
Integrated circuit incorporating wire bond inductance
Exposure apparatus for forming image
Nozzle blade angle adjustment device for variable geometry turbocharger
Computer enclosure locking mechanism
Flame retarded ABS polymeric compositions containing a mixed halo bisphenoxy alkane flame retardant and enhancing agent