Parison for forming blow molded medical balloon with modified portion, medical balloon, and related methods

Patent metadata

Field	Value
Publication number	US-11685097-B2
Application number	US-202117496869-A
Country	US
Kind code	B2
Filing date	Oct 8, 2021
Priority date	Mar 9, 2012
Publication date	Jun 27, 2023
Grant date	Jun 27, 2023

Abstract

A parison for being blow molded into a medical balloon for a catheter includes a first tubular layer having a functional modification and a second tubular layer adapted for bonding with the first tubular layer to form the blow molded balloon. Related methods are disclosed.

First claim

The invention claimed is:

1. A parison for being blow molded into a medical balloon for a catheter, the medical balloon when inflated having a working surface corresponding to a cylindrical barrel section of the medical balloon, comprising:
a first tubular layer having a functional modification that is visible to indicate a location of the working surface corresponding to the cylindrical barrel section of the medical balloon when inflated; and
a second tubular layer adapted for bonding with the first tubular layer to form the blow molded medical balloon;
wherein the first tubular layer is spaced from the second tubular layer.

2. The parison of claim 1 , wherein the first layer is external to the second layer or the first layer is internal to the second layer.

3. The parison according to claim 1 , wherein the functional modification comprises a radiopaque strip.

4. The parison of claim 3 , wherein the strip extends between a first end and a second end of the first layer.

5. The parison according to claim 1 , wherein the functional modification is selected from the group consisting of an added radiopacifier, a surface pattern, an etching, one or more perforations, and combinations of the foregoing.

6. A method of manufacturing an at least partially radiopaque balloon, comprising:
blow molding a first layer of a material having a functional modification and a second layer of material together to form the balloon;
wherein the blow molding step comprises providing the first layer along an outer surface of the second layer.

7. The method of claim 6 , further including the step of providing the first layer with a radiopaque portion in the form of at least one strip.

8. The method of claim 6 , further including the step of providing the first layer with a substantially continuous radiopacity.

9. The method of claim 6 , further including the step of providing the first layer with the functional modification selected from the group consisting of an added radiopacifier, a surface pattern, an etching, one or more perforations, and combinations of the foregoing.

10. The method of claim 6 , wherein the medical balloon when inflated includes a working surface corresponding to a cylindrical barrel section of the balloon, and the method further comprises providing the first layer with the functional modification so as to indicate a location of the working surface corresponding to the cylindrical barrel section of the medical balloon when inflated.

11. A method of manufacturing an at least partially radiopaque balloon, comprising:
blow molding a first layer of a material having a functional modification and a second layer of material together to form the balloon, further including the step of providing the first layer of material that is shorter that the second layer of material in a longitudinal direction.

12. A parison for being blow molded into a medical balloon for a catheter, comprising:
a first tubular layer having a functional modification; and
a second tubular layer bonded with the first tubular layer to form the medical balloon via blow molding without an adhesive,
wherein the first tubular layer is spaced from the second tubular layer.

13. The parison of claim 12 , wherein the medical balloon when inflated includes a working surface corresponding to a cylindrical barrel section of the balloon, and the first tubular layer includes the functional modification to indicate a location of the working surface corresponding to the cylindrical barrel section of the balloon.

14. The parison of claim 12 , wherein the medical balloon when inflated includes a working surface corresponding to a cylindrical barrel section of the balloon, and the first tubular layer includes the functional modification comprising a radiopaque quality of the first tubular layer to indicate a location of the working surface corresponding to the cylindrical barrel section of the balloon.

15. The parison of claim 12 , wherein the functional modification comprises a radiopaque strip extending between a first end and a second end of the first layer.

16. The parison of claim 12 , wherein the first tubular layer is shorter that the second layer of material in a longitudinal direction.

17. The parison of claim 12 , wherein the functional modification is selected from the group consisting of an added radiopacifier, a surface pattern, an etching, one or more perforations, and combinations of the foregoing.

Assignees

• Clearstream Tech Ltd

Inventors

• Fillmore Paul
• Ronan Allan
• Ryan Eoin
• Schaffer Andrew

Classifications

• B29C49/0005

  characterised by the material · CPC title

• B29C49/22 Primary

  using multilayered preforms or parisons · CPC title

• A61M2025/1075

  having a balloon composed of several layers, e.g. by coating or embedding · CPC title

• B29C2049/222

  only parts of the preforms or parisons are layered · CPC title

• A61L29/18

  Materials at least partially X-ray or laser opaque · CPC title