Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Porous medical catheter and methods of manufacture










Image Number 8 for United States Patent #7175734.

The present invention relates to fabrication methods and apparatus for irrigating medical catheters. Such catheters include at least one section of standard thermoplastic catheter tubing coupled to a section of porous tubing (e.g., ePTFE and the like). A source of fluid couples to the porous portion of tubing to dispense diverse fluids. The manufacturing technique overcomes the inability of such porous material to liquefy and/or bond to most available adhesives by creating a mechanical-based coupling. One aspect of the present invention involves pre-treatment of a portion of a porous material such as ePTFE; that is, a "pre-imbibing" process is employed wherein the ePTFE is saturated with a solution of solvent and dissolved thermoplastic resin. After the solution evaporates a resin-based interstitial residue provides suitable structure that fuses to adjacent thermoplastic material during application of heat, such as during thermal bonding. The present may be used to prepare virtually any porous material for thermoplastic bonding.








 
 
  Recently Added Patents
Memory with separate read and write paths
Image forming apparatus detecting color patterns and generating interleaf images at predetermined position
Lighting device with device for regulating the illumination according to the luminance of the illumination field and corresponding use
Extreme ultraviolet light generation apparatus
Synthesized interoperable communications
Code conversion apparatus, code conversion method, and computer product
Dual source mass spectrometry system
  Randomly Featured Patents
Combination paper and trash receptacle
Consumer clipper
Capacitance type weight sensor
Conductor layer nitridation
Arm for a lighting fixture
Methods and devices for stretching polymer films
Population based assessments and means to rank the relative immunogenicity of proteins
Test unit for stereophonic speaker systems
Apparatus and method for enhancing tissue repair in mammals
Ortho-and/or meta-substituted N-alkylhydroxylated secondary para-phenylenediamine compounds, compositions for dyeing keratin fibers comprising such compounds, and processes of dyeing therewith