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US 8,357,177 B2Granted
Balloon cones and waists thinning methodology
AssigneeBoston Scientific Scimed, Inc.
InventorsDaniel Keith Tomaschko, Daniel James Horn, Xiao Kang Zhang, Nao Pao Lee
Life of this patent
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Abstract
Medical balloons and balloon preforms are made by methods which include the step of selectively removing material from the proximal and/or distal ends of a segment. In the case of a thermoplastic material characterized by one or more glass transition temperatures, the segment may optionally be maintained at a temperature below the glass transition temperature of the segment during the material removal step.
Claims19
A method for thinning a portion of medical tubing:
- extruding a segment of thermoplastic tubing having a distal end and a proximal end, an inner surface and an outer surface defining a wall, and a predetermined wall thickness and length;
- removing material from the outer surface of the distal end, the proximal end, or both by grinding, the grinding comprises centerless grinding,
- wherein the distal end, the proximal end or both have a wall thickness that is less than the thickness of the wall immediately adjacent thereto.
A method for thinning a portion of medical tubing:
- extruding a segment of thermoplastic tubing, the thermoplastic tubing comprising a member selected from the group consisting of poly(ether-block-amide) copolymers and polyether-polyester copolymers, the segment having a distal end and a proximal end, an inner surface and an outer surface defining a wall, and a predetermined wall thickness and length;
- removing material from the outer surface of the distal end, the proximal end, or both by grinding with a grinding wheel,
- wherein the distal end, the proximal end or both have a wall thickness that is less than the thickness of the wall immediately adjacent thereto.
Dependencies are inferred from the claim text.