Tube connection

Patent metadata

Field	Value
Publication number	US-11577007-B2
Application number	US-201716302136-A
Country	US
Kind code	B2
Filing date	May 19, 2017
Priority date	May 20, 2016
Publication date	Feb 14, 2023
Grant date	Feb 14, 2023

Abstract

A tube connection part adapted to accommodate a flexible tube made from a material comprising polyvinyl chloride, wherein said tube connection part comprises a sleeve adapted to form an overlapping region between said tube connection part and said tube, wherein an adhesion promoting agent is deposited on at least a subsection of a surface of said sleeve, characterized in that the adhesion promoting agent comprises a styrene-butadiene block copolymer.

First claim

The invention claimed is:

1. A tube connection part adapted to accommodate a flexible tube made from a material comprising polyvinyl chloride, wherein the tube connection part comprises a sleeve adapted to form an overlapping region between the tube connection part and the tube, wherein
an adhesion promoting agent is deposited on at least a subsection of a surface of the sleeve,
the adhesion promoting agent comprises a styrene-butadiene block copolymer,
the sleeve comprises protruding ribs that extend in an axial direction thereof, and
the protruding ribs are dove tail shaped.

2. The tube connection part according to claim 1 , wherein the sleeve comprises at least one recess extending inwardly from its outer surface.

3. The tube connection part according to claim 1 , wherein the adhesion promoting agent is deposited as an overmolding on at least a subsection of a surface of the sleeve.

4. A fluid processing cassette module for processing therapeutic or bodily fluids, comprising at least one tube connection part according to claim 3 .

5. The fluid processing cassette module according to claim 4 , wherein the cassette module comprises a plurality of tube connection parts characterized in that at least two tube connection parts are interconnected by at least one conduit adapted to simultaneously distribute a polymer melt stream comprising a styrene-butadiene block copolymer to the at least two tube connecting parts for the manufacture of the overmolding on at least a subsection of a surface of the sleeve.

6. The tube connection part according to claim 1 , wherein the adhesion promoting agent forms an outer collar on the sleeve of the tube connection part.

7. The tube connection part according to claim 1 , wherein at least a portion of the adhesion promoting agent forms a front surface flange adapted to accommodate an end face of the tube.

8. The tube connection part according to claim 1 , wherein the overall styrene content in the styrene-butadiene block copolymer amounts to 20% to 80% by weight.

9. The tube connection part according to claim 1 , wherein the styrene-butadiene block copolymer exhibits an Order-Disorder-Transition temperature of above 140° C. and up to 220° C., or a Shore A hardness in the range of 80 to 90.

10. The tube connection part according to claim 1 , wherein the sleeve forms a female or a male connecting part.

11. The tube connection part according to claim 1 , which is rigid, or which is made of a plastic material, or which is rigid and made of a plastic material.

12. An assembly comprising the tube connection part according to claim 1 , and a flexible tube made from a material comprising polyvinyl chloride, wherein the tube is engaged in the overlapping region of the sleeve of the tube connection part, and the tube is connected to the tube connection part via the adhesion promoting material.

13. The assembly according to claim 12 , wherein the flexible tube is made from a material comprising polyvinyl chloride that comprises a plasticizer chosen from the group of alkyl esters of trimellic acid.

14. The tube connection part according to claim 1 , wherein the styrene-butadiene block copolymer exhibits an Order-Disorder-Transition temperature of from above 140° C. to 220° C. and a Shore A hardness in the range of from 80 to 90.

Assignees

• Fresenius Medical Care Deutschland Gmbh

Inventors

• Fini Massimo
• Lauer Martin
• Reiter Reinhold
• Veneroni Alain

Classifications

• A61L29/141 Primary

  Plasticizers · CPC title

• A61L29/041 Primary

  obtained by reactions only involving carbon-to-carbon unsaturated bonds · CPC title

• A61M39/08

  Tubes; Storage means specially adapted therefor · CPC title

• A61M39/12 Primary

  for joining a flexible tube to a rigid attachment · CPC title

• A61L29/085

  Macromolecular materials · CPC title