THIN-WALLED TUBES WITH COMMUNICATION PATHWAYS
The present disclosure provides modified polymeric thin-walled tubes with one or more conductive pathways along at least a part of a length or a circumference of the polymeric tube, suitable for use as liners in catheter construction. The one or more conductive pathways are formed of a conductive ink and are on a surface of the polymeric tube and not embedded within the walls of the tube.
1 . A modified polymeric tube suitable for use as a catheter liner, comprising:
a polymeric tube with walls having an average wall thickness of about 0.5 mm or less; and
one or more conductive pathways positioned directly on a surface of the polymeric tube or directly on an adhesive material in direct contact with the surface of the tube, along at least a part of a length or a circumference of the polymeric tube,
wherein the one or more conductive pathways comprise a conductive ink and
wherein the one or more conductive pathways are on a surface of the polymeric tube and not embedded within the walls of the polymeric tube.
2 . The modified polymeric tube of claim 1 , wherein the one or more conductive pathways comprise a plurality of conductive pathways.
3 . The modified polymeric tube of claim 2 , wherein at least two of the plurality of conductive pathways are disposed to be at least electrically insulated with respect to each other.
4 . The modified polymeric tube of claim 3 , wherein an electrical insulation is disposed between the at least two of the plurality of conductive pathways.
5 . The modified polymeric tube of claim 4 , wherein the at least two of the plurality of conductive pathways are disposed at a same radial position of the polymeric tube and a different position around a circumference of the polymeric tube.
6 . The modified polymeric tube of claim 4 , wherein the at least two of the plurality of conductive pathways are disposed at a different radial position of the polymeric tube and a same position around a circumference of the polymeric tube.
7 . The modified polymeric tube of claim 3 , wherein an electrical insulation is disposed on at least a part of a length of the polymeric tube between the at least two of the plurality of conductive pathways.
8 . The modified polymeric tube of claim 1 , wherein the average wall thickness is about 0.05 mm or less.
9 . The modified polymeric tube of claim 1 , wherein the average wall thickness is about 0.02 mm or less.
10 . The modified polymeric tube of claim 1 , wherein the surface of the tube comprises an outer surface of the tube.
11 . The modified polymeric tube of claim 1 , wherein the tube comprises a polymer selected from the group consisting of PTFE, FEP, PFA, PEEK, UHMWPE, polyether block copolymers, polyamide block copolymers, polyether-polyamide copolymers, polyamides, polyimide, and co-polymers and derivatives thereof.
12 . The modified polymeric tube of claim 1 , wherein the optional adhesive material is polyimide.
13 . The modified polymeric tube of claim 1 , wherein the modified tube can withstand temperatures up to about 300° C.
14 . A jacket-coated liner for use in a catheter, comprising the modified polymeric tube of claim 1 and an outer jacket layer on the surface of the modified polymeric tube and directly adhered to the surface thereof.
15 . The jacket-coated liner of claim 14 , wherein the conductive pathways exhibit conductivity.
16 . The jacket-coated liner of claim 14 , wherein the outer jacket layer comprises a nylon material or a poly(ether-b-amide).
17 . A catheter comprising the modified polymeric tube of claim 1 .
18 . A catheter comprising the jacket-coated liner of claim 14 .
19 . A method of providing a modified polymeric tube suitable for use as a catheter liner, comprising:
providing a polymeric tube with walls having an average wall thickness of about 0.5 mm or less; and
applying a conductive ink directly to a surface of the polymeric tube or on an adhesive material in direct contact with the surface of the polymeric tube in a pre-determined geometry, along at least a part of a length or a circumference of the polymeric tube to form conductive pathways on the polymeric tube, such that the conductive ink is not embedded within the walls of the polymeric tube.
20 . The method of claim 19 , wherein the method further comprises treating the polymeric tube prior to applying the conductive ink.
21 . The method of claim 20 , wherein the treating comprises chemically or physically treating the surface of the polymeric tube to enhance adhesion between the surface of the polymeric tube and the conductive ink.
22 . The method of claim 19 , wherein the applying comprises printing, electrostatic application, physical deposition, chemical deposition, vapor deposition, metallization, extrusion coating, and/or electroplating techniques.
23 . A method of providing a jacket-coated liner for use in a catheter, comprising:
providing a modified polymeric tube suitable for use as a catheter liner according to the method of claim 19 ; and
melting a polymeric material on an outer surface of the modified polymeric tube and cooling the polymeric material to give an outer jacket layer on the outer surface, wherein the outer jacket layer is directly adhered to the outer surface of the modified polymeric tube.
24 . The method of claim 23 , wherein the polymeric material of the outer jacket layer comprises a nylon or a poly(ether-b-amide).
25 . A method of forming a catheter, comprising:
providing a jacket-coated liner for use in a catheter according to the method of claim 23 ; and
incorporating the jacket-coated liner within a catheter assembly.