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US 6,149,996 AGranted
Molded tip and tubing and method of making same
AssigneeSchneider (USA) Inc.
InventorsJeffrey A Helgerson, Gary R. Fiedler
Life of this patent
Estimating the term…
Abstract
The invention relates to a molded tip on tubing and a method of making the same. The molded tip is molded on the tubing in a mold cavity and is for use in a stent delivery device, guide catheter, or angiographic catheter.
Claims18
A molded tip and tubing assembly comprising:
- a tubing, having a length and made of one or more materials and including a proximal end, a distal end, a distal portion, a longitudinal axis, and an outside surface, the distal portion of the tubing having a first melting temperature, and a treated surface on the outside surface portion, the treated surface portion having surface irregularities;
- and
- a molded tip having an outside surface forming a predetermined shape and proximal and distal ends, the molded tip made of a thermoplastic or polymeric material having a second melting temperature less than the first melting temperature of the distal portion of the tubing, the molded tip disposed on the distal end of the tubing, bonded to the treated portion, and substantially surround the tubing and treated portion, and extending proximal and distal of the distal end of the tubing to form a tubing and molded tip assembly.
A molded tip and tubing assembly made by the process comprising:
- providing tubing having one or more melting temperatures, a proximal and a distal end, a treated portion at the distal portion to provide one or more surface irregularities on an outside surface;
- providing a mold having a cavity with a predetermined shape, the mold adapted to support the tubing and contain a melted material disposed about the distal end of the tubing;
- disposing the distal end of the tubing into the mold;
- disposing or injecting thermoplastic or polymeric material, at a temperature less than the melting temperature of the distal portion of the tubing disposed in the cavity, about the outside surface of the distal end of the tubing, the thermoplastic or polymeric material extending proximal and distal of the distal end of the tubing and forming a molded tip and catheter assembly in the mold;
- cooling the tip and catheter assembly and mold;
- and
- removing the tip and catheter assembly from the mold, the tip and catheter assembly adapted to be used in a medical device.
4 more elements
A molded tip on tubing comprising:
- tubing including a polyether block amide material, a proximal end, a distal end, a distal portion, a longitudinal axis, an outside surface, and a treated portion including surface irregularities thereon, the irregularities adapted to provide one or more structural surfaces for the molded tip to be disposed thereabout, the distal portion of the tubing having a melting temperature greater than about 275.degree. F.;
- and
- a molded tip including an outside surface forming a predetermined shape and proximal and distal ends, the molded tip made of a polyether block amide or a thermoplastic polyurethane elastomer material having a melting temperature less than about 625.degree. F., the molded tip adapted to be disposed on the distal end of the tubing, substantially surround the tubing and treated portion, bonded to the tubing and extending at least proximal of the distal end of the tubing to form a tubing and molded tip assembly
- herein the tubing and molded tip assembly is used in at least one of a stent delivery device, guide catheter, or angiographic catheter.
1 more element
Dependencies are inferred from the claim text.