Polyamide/polyvinylpyrrolidone (PA/PVP) polymer mixture as catheter material

Patent metadata

Field	Value
Publication number	US-9033918-B2
Application number	US-201113995679-A
Country	US
Kind code	B2
Filing date	Nov 23, 2011
Priority date	Dec 21, 2010
Publication date	May 19, 2015
Grant date	May 19, 2015

Abstract

An embodiment of the present invention relates to a catheter comprising a dilatable balloon, characterized in that the primary balloon wall is produced from a material that comprises or consists of a polyamide/polyvinylpyrrolidone (PA/PVP) polymer mixture.

First claim

What is claimed is:

1. A catheter comprising a dilatable balloon, characterized in that a primary balloon wall is produced from a material that comprises polyamide/polyvinylpyrrolidone (PA/PVP) polymer mixture.

2. The catheter according to claim 1 , wherein the PA/PVP polymer mixture comprises a polyamide content and a polyvinylpyrrolidone content, with the weight percentages of the polyamide and polyvinylpyrrolidone contents together totaling substantially 100%.

3. The catheter according to claim 1 , wherein the weight percent of the polyvinylpyrrolidone content in the PA/PVP polymer mixture is 0.01 to 7% by weight.

4. A catheter according to claim 1 , wherein the polyamide content of the PA/PVP polymer mixture comprises a polyamide that is selected from PA5 to PA15.

5. A catheter according to claim 1 , wherein the polyvinylpyrrolidone content of the PA/PVP polymer mixture comprises a polyvinylpyrrolidone having an average molecular weight of 2,500 to 2,500,000 g/mol.

6. A catheter according claim 1 , wherein the polyvinylpyrrolidone content of the PA/PVP polymer mixture comprises polyvinylpyrrolidone having a K-value of 20 to 100.

7. A catheter according to claim 1 , and further comprising at least one further component produced from a material comprising or a PA/PVP polymer mixture.

8. A catheter according to claim 1 , wherein the dilatable balloon comprises a coating or cavity filling on the outer surface of the primary balloon wall.

9. A catheter according to claim 1 , wherein the catheter has a stent.

10. The catheter according to claim 1 wherein the primary balloon wall consists entirely of a polyamide/polyvinylpyrrolidone (PA/PVP) polymer mixture.

11. The catheter according to claim 1 , wherein the weight percent of the polyvinylpyrrolidone content in the PA/PVP polymer mixture is 1 to 3% by weight.

12. The catheter according to claim 1 , wherein the polyamide content of the PA/PVP polymer mixture is PA12.

13. The catheter according claim 1 , wherein the polyvinylpyrrolidone content of the PA/PVP polymer mixture comprises a polyvinylpyrrolidone having a K-value selected from 30, 60 and 90.

14. A catheter according claim 1 , wherein the polyvinylpyrrolidone content of the PA/PVP polymer mixture consists entirely of a polyvinylpyrrolidone having a K-value of 30 to 90.

15. A catheter according to claim 1 , wherein the polyvinylpyrrolidone content of the PA/PVP polymer mixture consists entirely of polyvinylpyrrolidone having an average molecular weight of 2,500 to 2,500,000 g/mol.

16. A method for producing the dilatable balloon of a catheter according to claim 1 , characterized in that the balloon shaping is carried out at a temperature of ≧50° C.

17. The method according to claim 16 , wherein the balloon shaping is carried out at a temperature of ≧90° C. in a water bath.

18. Use of a material comprising or consisting of a PA/PVP polymer mixture for producing catheters, and notably balloon catheters, preferably for the production of a dilatable balloon of a catheter.

19. A catheter comprising a dilatable balloon having a wall that comprises a polyamide/polyvinylpyrrolidone (PA/PVP) polymer mixture, the weight percent of the polyvinylpyrrolidone content in the PA/PVP polymer mixture being 0.5 to 5% and the polyvinylpyrrolidone having an average molecular weight of 2,500 to 2,500,000 g/mol., the polyvinylpyrrolidone has a K-value of 30 to 90, the polyamide content of the PA/PVP polymer mixture comprises a polyamide that is selected from PA6 to PA12.

Assignees

• Quint Bodo
• Wesselmann Matthias
• Sager Laura
• Biotronik Ag

Inventors

• Quint Bodo
• Wesselmann Matthias
• Sager Laura

Classifications

• A61L29/049 Primary

  Mixtures of macromolecular compounds · CPC title

• Y10T428/1393

  Multilayer [continuous layer] · CPC title

• C08L29/06

  Copolymers of allyl alcohol · CPC title

• Y10T428/1397

  Single layer [continuous layer] · CPC title

• Y10T428/139

  Open-ended, self-supporting conduit, cylinder, or tube-type article · CPC title