Medical Device Having Laminate-Coated Braid Assembly
AssigneeSt. Jude Medical, Atrial Fibrillation Division, Inc.
InventorsRobert F. Howat, Alan Fuentes
Life of this patent
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Abstract
A catheter includes a braid assembly having a dual-laminate coating. The braid assembly includes a plurality of braid members interwoven to provide for interstices between the braid members, each braid member having an electrically conductive element, a flexible non-electrically-conductive polymer coating that insulates the electrically conductive element and a thermoplastic bonding adhesive coating. The braid assembly is formed between an inner polymer layer and an outer polymer layer. One or more of the braid members may be coupled to an energy delivery element.
Claims23
A catheter comprising:
- an elongate catheter body having an outer surface, a proximal end, a distal end, and an inner lumen extending between the proximal and distal ends;
- one or more energy delivery elements disposed along the distal end of the elongate catheter body;
- and
- a braid assembly extending from at or near the proximal end to at or near the distal end, the braid assembly comprising a plurality of braid members interwoven to provide for interstices between the braid members, wherein each of the plurality of braid members comprises p2 an electrically conductive element having a first coating and a second coating, the first coating comprising a flexible non-electrically-conductive polymer that insulates the electrically conductive element, and the second coating comprising a heat sensitive bonding adhesive,
- wherein at least one of the plurality of braid members is electrically coupled to each of the one or more energy delivery elements.
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A method of manufacturing a catheter, comprising the steps of:
- forming an inner layer of a first polymer;
- forming a braided assembly layer about the inner layer;
- and
- forming an outer layer of a second polymer about the braided assembly layer, wherein the braided assembly layer comprises a plurality of braid members interwoven to provide for interstices between the braid members and wherein the step of forming the braided assembly layer comprises
- providing a plurality of electrically conductive elements;
- coating the electrically conductive elements with a first coating, the first coating comprising a flexible non-electrically-conductive polymer that insulates the electrically conductive element;
- coating the electrically conductive elements with a second coating, the second coating comprising a heat sensitive bonding adhesive;
- and
- braiding the electrically conductive elements to form a braided assembly layer.
A catheter comprising:
- an elongate catheter body having an outer surface, a proximal end, a distal end, and an inner lumen extending between the proximal and distal ends;
- one or more energy elements disposed along the distal end of the elongate catheter body;
- and
- a plurality of electrically conductive elements extending from at or near the proximal end to at or near the distal end, wherein each of the electrically conductive elements has a first coating and a second coating, the first coating comprising a flexible polymer that insulates the electrically conductive element, and the second coating comprising a heat sensitive bonding adhesive,
- wherein each of the one or more energy elements is electrically coupled to at least one electrically conductive element.
Dependencies are inferred from the claim text.