Catheter Shaft and Method of Forming Same
AssigneeAbbott Cardiovascular Systems Inc.
InventorsJeong S. Lee, Kenneth L. Wantink
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Abstract
Elongate, flexible catheter includes an elongated shaft having a proximal end, a distal end, and a lumen defined therein. The shaft includes a tubular member having an outer layer and an inner layer. The outer layer includes a first polymer selected from the group consisting of nylon 12, polyether block amide, and combinations thereof. The inner layer includes a second polymer having a heat deflection temperature greater than about 53° C. selected from the group consisting of nylon 11, nylon 6, nylon 6,6, nylon 6,12, polyamide-imide, polyetherimide, polypropylene, polyethylene terephthalate, polybutylene terephthalate, polyethereetherketone, and combinations thereof. Method of making an elongate, flexible catheter is also provided.
Claims22
An elongate, flexible catheter, comprising:
- an elongated shaft having a proximal end, a distal end, and a lumen defined therein, the shaft including a tubular member having an outer layer comprising a first polymer selected from the group consisting of nylon 12, polyether block amide, and combinations thereof, and an inner layer comprising a second polymer having a heat deflection temperature greater than about 53° C. selected from the group consisting of nylon 11, nylon 6, nylon 6,6, nylon 6,12, polyamide-imide, polyetherimide, polypropylene, polyethylene terephthalate, polybutylene terephthalate, polyethereetherketone, and combinations thereof.
A method of making an elongate, flexible catheter, comprising:
- coextruding a tubular member having an outer layer and an inner layer to form at least a portion of an elongated shaft having a proximal end, a distal end, and a lumen defined therein, the outer layer comprising a first polymer selected from the group consisting of nylon 12, polyether block amide, and combinations thereof, and the inner layer comprising a second polymer having a heat deflection temperature greater than about 53° C.
- disposing a working device proximate the distal section of the elongated shaft.
Dependencies are inferred from the claim text.