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
Illuminating device
Address generation unit for accessing a multi-dimensional data structure in a desired pattern
Mobile application for calendar sharing and scheduling
Magnetic recording medium, information storage device, and method of manufacturing magnetic recording medium
Off-line converter with digital control
Circuit arrangement for a piezo transformer, and method therefor
Preparation process of transition metal boride and uses thereof
  Randomly Featured Patents
Each of a plurality of descriptors having a completion indicator and being stored in a cache memory of an input/output processor
Applicator for uniformly distributing a flowable material over a receiving surface
Tire alert system
Camera mounting assembly including an electrical box for mounting a high or low voltage security camera
Computer-aided natural language annotation
Folding knives
Method and system for reducing out of band radiation in orthogonal frequency division multiplexing systems
Enhancing the strength, moisture resistance, and fire-resistance of wood, timber, lumber, similar plant-derived construction and building materials, and other cellulosic materials
Golf training aid
Semiconductor device having gate electrode and impurity diffusion layer different in conductivity type and method of manufacturing same