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










Image Number 7 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
Image forming apparatus with an improved density adjustment unit
Mobile terminal device capable of more effectively utilizing operation portions, conductive portion, operation detecting unit, power supply unit, and signal processing unit
Coupling device having piercing member
Curved structural part made of composite material and a process for manufacturing such a part
Self-assembling surface coating
Vehicle inertial sensor systems
System and method for solving connection violations
  Randomly Featured Patents
System and method for adaptive duty cycle optimization
Method and system for facilitating wireless communication via alternate wireless pathway
Virtual bone biopsy
Vacuum mower
Projector and lens collar module thereof
Machining method for member included screw-shaped portion
Method for increasing the sucrose content of growing plants
Lightwave oven and method of cooking therewith having multiple cook modes and sequential lamp operation
Method of sealing semiconductor device with resin by pressing a lead frame to a heat sink using an upper mold pressure member
Magnetic valve