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US 2011/0297307 A1Published application
Unfused catheter body feature methods of manufacture
AssigneeCodman & Shurtleff, Inc.
InventorsRobert R. Slazas, Jessica T. Schenck
Life of this patent
Estimating the term…
Abstract
The disclosure is directed to manufacturing tubular bodies for catheters. An inner tubular catheter body has an inner layer, a braided portion over the inner layer and an outer layer. The outer layer is fused to the braided portion for a selected length or lengths of the inner tubular body and is unfused for a selected length or lengths to achieve the desired combination of stiffness and flexibility.
Claims20
1-25. (canceled)
A method of manufacture of a tubular member for a catheter, comprising:
- (a) providing a mandrel;
- (b) applying an inner layer of a first polymer to the surface of the mandrel;
- (c) applying a braided portion to the outside surface of the inner layer;
- (d) applying an outer layer of a second polymer around the braided portion and the inner layer;
- (e) fusing at least one selected length of the outer layer to the braided portion to form a fused region of the tubular member while refraining from fusing at least one selected length of the outer layer to the braided portion to provide an unfused region;
- and
- (f) removing the mandrel to provide the tubular member.
4 more elements
A method of manufacture of a balloon catheter, comprising:
- (a) providing a mandrel;
- (b) applying an inner layer of a first polymer to the surface of the mandrel;
- (c) applying a braided portion to the outside surface of the inner layer;
- (d) applying an outer layer of a second polymer around the braided portion and the inner layer;
- (e) fusing at least one selected length of the outer layer to the braided portion to form a fused region of the tubular member while refraining from fusing at least one selected length of the outer layer to the braided portion to provide an unfused region thereby providing an inner tubular body;
- (f) positioning a flexible shaft coaxial with the inner tubular member, the flexible shaft having a proximal portion and distal end portion, the shaft defining a lumen within which the inner tubular body is positioned, the tubular body including a distal end portion and an outer layer with a proximal and distal end;
- (g) providing a balloon member having a proximal leg and a distal leg;
- (h) securing the proximal leg of the balloon member to the distal end portion of the flexible shaft;
- (i) securing the distal leg of the balloon member to the distal end portion of the tubular body;
- (j) positioning the unfused length at a location radially inward of at least a portion of the balloon between the proximal leg and the distal leg of the balloon;
- and
- (k) removing the mandrel upon formation of the inner tubular body or thereafter.
9 more elements
Dependencies are inferred from the claim text.