The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Nov. 17, 2020

Filed:

May. 08, 2018
Applicant:

Teleflex Medical Incorporated, Morrisville, NC (US);

Inventors:

James R. Olson, Norwich, CT (US);

Jiunn-Yow Chen, Amherst, NH (US);

Dean Dinsmore, New Ipswich, NH (US);

Jeffrey Wallace, Saunderstown, RI (US);

Assignee:

Teleflex Medical Incorporated, Morrisville, NC (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61B 17/06 (2006.01); A61L 17/04 (2006.01); B29C 48/00 (2019.01); B29C 48/05 (2019.01); B29C 48/06 (2019.01); B29C 48/18 (2019.01); B29C 48/91 (2019.01); D01D 5/247 (2006.01); D01D 10/02 (2006.01); D01F 6/12 (2006.01); D01F 8/10 (2006.01); A61B 90/92 (2016.01); C08L 27/18 (2006.01); B29K 27/18 (2006.01); B29K 105/00 (2006.01); B29K 105/24 (2006.01); B29L 31/00 (2006.01); B29C 48/19 (2019.01); B29C 48/20 (2019.01); B29C 48/94 (2019.01); B29K 223/00 (2006.01); B29C 35/10 (2006.01); A61B 17/00 (2006.01);
U.S. Cl.
CPC ...
A61B 17/06166 (2013.01); A61B 90/92 (2016.02); A61L 17/04 (2013.01); B29C 48/001 (2019.02); B29C 48/0018 (2019.02); B29C 48/05 (2019.02); B29C 48/06 (2019.02); B29C 48/18 (2019.02); B29C 48/91 (2019.02); C08L 27/18 (2013.01); D01D 5/247 (2013.01); D01D 10/02 (2013.01); D01F 6/12 (2013.01); D01F 8/10 (2013.01); A61B 2017/00964 (2013.01); B29C 35/10 (2013.01); B29C 48/19 (2019.02); B29C 48/20 (2019.02); B29C 48/94 (2019.02); B29K 2027/18 (2013.01); B29K 2105/007 (2013.01); B29K 2105/246 (2013.01); B29K 2105/251 (2013.01); B29K 2223/0683 (2013.01); B29L 2031/753 (2013.01);
Abstract

A method for making an expanded, and optionally multi-component and/or colored PTFE monofilament is disclosed. The method includes forming a first paste by mixing a PTFE powder with a hydrocarbon solvent; forming an extrusion preform by pressing the first paste into a form; curing the extrusion preform by exposing the extrusion preform to a first temperature for a first time duration; forming a green monofilament by extruding the first paste through a die; expanding the green monofilament by exposing the green monofilament to a second temperature for a second time duration, the second time duration occurring after the first time duration; stretching the green monofilament substantially along a longitudinal axis of the green monofilament, the stretching the green monofilament occurring after the expanding the green monofilament; and sintering the green monofilament after the stretching the green monofilament.


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