Zeus Company Inc.

Zeus Industrial Products, Inc.

Patrick Cooper

Robert L Ballard

Douglas Tourville

Justin A Marro

John Richard Campanelli

James M Brown

Cameron Hunter

Tyler Poole

Shannon M Giovannini

Jacob Coleman

Parastoo Azamian

Daniel Green

Zahidul Wahab

Edward H Rast, Iii

Edward Rast

Denise Browne

Guillermo Alpizar

Bernard Salvador

Dana Barringer

Ravinder Singh

Jeffrey M Cox

Bhavya Singhi

Laurence C Gonzalez

Franklin Villagra

A non-crosslinked polymeric heat shrink tubing including poly(ether-block-amide) (PEBA) and methods for making such non-crosslinked polymeric heat shrink tubing is provided. The non-crosslinked PEBA heat shrink tubing disclosed herein finds application, e.g., as a processing aid and final component in the manufacture of catheters and other medical devices.

Non-crosslinked heat shrink tubing

The disclosure relates to assemblies of thin-walled tubes and mandrels for use in thin wall catheter liners. For example, an assembly is provided that includes a thin-walled PTFE tube comprising walls with a thickness of less than 0.004 inches, positioned over a filled mandrel comprising PTFE with one or more fillers incorporated therein. The disclosure further provides, independently, thin-walled tubes and filled mandrels, as well as methods of making and using such components.

Tube/mandrel assemblies

The present application relates generally to tubes, such as thin walled catheter liners with small wall thicknesses (e.g., less than 1 mm), including crosslinked fluoropolymers, e.g., crosslinked poly(tetrafluoroethylene). The disclosure further provides methods of manufacturing such tubes and systems for manufacturing such tubes.

Crosslinked PTFE

The present disclosure provides poly(tetrafluoroethylene) (PTFE) microparticles with a Dv50 of about 20 μm to about 30 mm and a specific surface area (SSA) of at least about 3.0 m/g when measured by a multipoint BET method of ISO 9277. Such PTFE microparticles can be obtained via a method including thermomechanically degrading scrap PTFE in the presence of air and/or oxygen and reducing the particle size of the resultant degraded PTFE.

Microparticles from thermomechanically degraded PTFE

The present disclosure provides extruded PTFE composite tubes with a reduced coefficient of friction (COF). In some embodiments, such extruded PTFE composite tubes may exhibit a reduced change in coefficient of friction between about 20° C. and about 40° C. with the inclusion of secondary polymeric particles with small particle sizes (<100 μm) at loading percentages of less than about 50 weight %.

PTFE liners with reduced coefficient of friction

The present disclosure provides catheters comprising polytetrafluoroethylene (PTFE) tubes with advantageous combinations of strength, flexibility, and size. Such tubes can exhibit features including an average wall thickness of 0.001&#x2033; or less, a tensile stress at break of greater than 5000 psi, and a storage modulus of less than 100,000 psi at 37&#xb0; C. These tubes can be also be provided independently (i.e., not within a catheter) and can be employed in various applications.

Catheter comprising PTFE liner

Growing community of inventors

Orangeburg, SC, United States of America

Patrick Cooper