In patients highly suspected of developing steal syndrome, the subscapular artery may be a good supplier for functional prosthetic arteriovenous access, as well as a good solution for the prevention of steal syndrome. A 51-year-old woman was preparing to have a loop shaped polytetrafluoroethylene (PTFE) graft placed at the left upper extremity. The diameter of subscapular the artery was 3 mm. A...

In this work, a new framework and model for the digital generation and characterization of the microstructure of GDL materials with localized binder and polytetrafluoroethylene (PTFE) distributions were developed using 3D morphological imaging processing. This new generation technique closely mimics manufacturing processes and produces for the first time complete phase-differentiated (void, fib...

A novel method for immobilization of bacteria and Saccharomyces cerevisiae cells is described. Microorganisms may be entrapped in a matrix of poly(tetrafluoroethylene) (PTFE) fibrils. Cells are blended with an aqueous emulsion of PTFE stabilized with Triton X-100 surfactant to form a thick paste. The paste is calendered biaxially in a standard rubber mill. This process causes fibrillation of th...

The paper deals with the study of processes obtaining polymer composites by chemo-mechanical activation technology (CMA-technology). methods research and testing composite materials based on polytetrafluoroethylene (PTFE) carbon fibers are analyzed generalized. influence CMA structure properties PTFE was determined.

Abstract PTFE/Al, as a kind of typical reactive material with high energy density and impact-induced reaction characteristics, has attracted extensive attention. Three kinds PTFE/Al/oxide materials were designed fabricated by introducing CuO, Fe 2 O 3 , MoO into their dynamic mechanical responses studied SHPB experiments. The results showed that the sample cracked undergoing strain rate compres...

PURPOSE We explored the performance of and pressure elevation caused by small-diameter microtubes used to reduce overfiltration. METHODS Using a syringe pump-driven constant-flow setting (2 µL/min), pressures were measured for polytetrafluoroethylene (PTFE) microtubes 5 mm in length with inner diameters of 51, 64, and 76 µm and for polyether block amide (PEBAX) microtubes with an inner diamet...

OBJECTIVE To evaluate the safety and efficacy of expanded polytetrafluoroethylene (PTFE) (Gore-Tex; W. L. Gore & Associates, Flagstaff, Ariz) for augmentation of deep nasolabial creases. DESIGN Retrospective chart review with a minimum of 12 months of follow-up. SETTING Private practice ambulatory surgery center. STUDY POPULATION One hundred consecutive patients (average age, 49 years) un...

Severe vertical ridge deficiency in the anterior maxilla represents one of the most challenging scenarios in bone regeneration. Under ideal circumstances, guided bone regeneration in combination with soft tissue management has shown predictable esthetic and functional outcomes. Success largely relies on primary wound closure during and after the surgical procedure. Surgical sites present differ...

In this study, superhydrophobic ZnO/Polytetrafluoroethylene (ZnO/PTFE) films with water droplet contact angles (CA) observed as high 165° and sliding of (SA) <1° have been prepared on glass substrates by RF magnetron sputtering. The PTFE was wrapped a nano-rod made ZnO film properties while providing excellent UV resistance compared to hexadecyltrimethoxysilane (HDTMS) hydrophobic agents. up...

BACKGROUND The survival of hemodialysis patients requiring dialysis depends on the long-term functioning and patency of the vascular access. Prosthetic vascular grafts are inevitably used for patients whose vessels are unsuitable for an autogenous arteriovenous (AV) fistula. The purpose of this study was to compare the patency rate and associated complications using different types of grafts. ...