Medical tubings made of a polymer material

Patent metadata

Field	Value
Publication number	US-9345812-B2
Application number	US-201414262225-A
Country	US
Kind code	B2
Filing date	Apr 25, 2014
Priority date	Oct 23, 2007
Publication date	May 24, 2016
Grant date	May 24, 2016

Abstract

Medical tubing (T), such as a guidewire, a stent, a catheter or a hollow needle, made of a kinked rigid-rod polyarylene exhibiting a outstanding characteristics including high torqueability, high pushability and high flexibility and which can be easily thin-wall extruded under especially harsh conditions.

First claim

The invention claimed is:

1. A tubing comprising at least one kinked rigid-rod polyarylene of which more than 50 wt. % of the recurring units are recurring units (R) of one or more formulae consisting of an optionally substituted arylene group, provided said optionally substituted arylene group is linked by each of its two ends to two other optionally substituted arylene groups via a direct C—C linkage, said recurring units (R) being a mix consisting of:
between 0 and 75 mole %, based on the total number of moles of the recurring units (R), of rigid rod-forming arylene units (Ra), said rigid rod-forming arylene units (Ra) being optionally substituted by at least one monovalent substituting group, and
between 25 and 100 mole %, based on the total number of moles of the recurring units (R), of kink-forming arylene units (Rb), said kink-forming arylene units (Rb) being optionally substituted by at least one monovalent substituting group;

wherein the tubing wall thickness is below 0.10 cm.

2. The tubing according to claim 1 , wherein the tubing wall thickness is below 0.05 cm.

3. The tubing according to claim 1 , wherein the tubing wall thickness is below 0.015 cm.

4. The tubing according to claim 1 , wherein the tubing inner diameter is of at most 0.50 cm and the tubing outer diameter is of at most 0.80 cm.

5. The tubing according to claim 1 , which is a needle comprising a body comprising at least one polymer material comprising the at least one kinked rigid-rod polyarylene, wherein said body extends along a longitudinal axis, has two ends and a hollow section all along the longitudinal axis, and at least one end of said body is beveled.

6. The tubing according to claim 5 , wherein the tubing wall thickness is of at most 0.50 mm.

Assignees

• Solvay Advanced Polymers Llc
• Solvay Specialty Polymers Usa

Inventors

• El-Hibri Mohammad Jamal
• Baleno Brian
• Maljkovic Nikica
• Shemper Bianca Sadicoff
• Bonnadier Jean-Baptiste
• Ireland Daniel J
• Massilon Henri N J

Classifications

• A61L31/06

  obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds {(A61L31/041 takes precedence)} · CPC title

• C08G2261/314

  Condensed aromatic systems, e.g. perylene, anthracene or pyrene · CPC title

• C08L65/02

  Polyphenylenes · CPC title

• A61L31/048 Primary

  obtained by reactions only involving carbon-to-carbon unsaturated bonds (A61L31/041 takes precedence) · CPC title

• C08G61/10

  only aromatic carbon atoms, e.g. polyphenylenes · CPC title