Catheters with lubricious linings and methods for making and using them
Apparatus and methods are provided for creating tubular devices, e.g., as components for catheters, sheaths, and or other devices sized for introduction into a patient. In one embodiment, a method is provided for making a tubular device using a sheet of material including a coated first surface. The sheet is rolled around a mandrel until longitudinal edges of the sheet are disposed near or adjacent one another, e.g., without attaching the longitudinal edges together. A tubular braid is positioned over the sheet-wrapped mandrel, one or more tubular segments are positioned over the tubular braid, and heat shrink tubing is positioned over the tubular segments. The resulting assembly is heated to cause the tubular segments to at least partially reflow and/or otherwise laminate the tubular segments to the tubular braid and sheet. The heat shrink tubing and mandrel are then removed to create the tubular device.
1. A tubular device, comprising a proximal end, a distal end sized for introduction into a body lumen, and a lumen extending between the proximal and distal ends, the tubular device comprising:
an inner liner comprising longitudinal edges extending between the proximal and distal ends and a hydrophilic, ultraviolet-light-cured coating on an inner surface thereof, the longitudinal edges being disposed adjacent one another;
a braid surrounding at least a portion of the inner liner;
an outer layer surrounding the braid and the inner liner; and wherein the inner liner comprises a plurality of grooves in the inner surface and extending between the proximal and distal ends, the ultraviolet-light-cured coating penetrating into the plurality of grooves.
2. The tubular device of claim 1 , wherein the inner liner has a thickness between about 0.0001-0.003 inch.
3. The tubular device of claim 1 , wherein the outer layer has a thickness between about 0.004-0.02 inch.
4. The tubular device of claim 1 , wherein the lumen has a diameter between about one and five millimeters.
5. The tubular device of claim 1 , wherein the inner liner comprises thermoplastic material, and wherein at least one of the thermoplastic material and the outer layer are reflowed to bond the inner liner to the outer layer.
6. A tubular device, comprising a proximal end, a distal end sized for introduction into a body lumen, and a lumen extending between the proximal and distal ends, the tubular device comprising:
an inner liner comprising longitudinal edges extending between the proximal and distal ends and a hydrophilic, ultraviolet-light-cured coating on an inner surface thereof, the longitudinal edges being disposed adjacent one another;
a braid surrounding at least a portion of the inner liner;
an outer layer surrounding the braid and the inner liner; and
wherein the inner liner comprises a plurality of relief features in the inner surface and extending between the proximal and distal ends, the plurality of relief features increasing exposure of the inner surface to an activating agent of the ultraviolet-light-cured coating.
7. A tubular device, comprising a proximal end, a distal end sized for introduction into a body lumen, and a lumen extending between the proximal and distal ends, the tubular device comprising:
an inner liner comprising longitudinal edges disposed adjacent one another and extending between the proximal and distal ends and an inner surface defining a wall of the lumen, relief features on the inner surface extending between the proximal and distal ends, and an ultraviolet-light-cured coating on the inner surface, the ultraviolet-light-cured coating imparting one or more predetermined properties to the inner surface;
a reinforcing layer surrounding at least a portion of the inner liner; and
an outer layer surrounding the reinforcing layer and inner liner.
8. The tubular device of claim 7 , wherein the relief features comprise a plurality of grooves in the inner surface extending axially between the proximal and distal ends.
9. The tubular device of claim 7 , wherein the relief features comprise a plurality of grooves in the inner surface extending helically between the proximal and distal ends.
10. The tubular device of claim 7 , wherein the relief features extend one of: a) axially between the proximal and distal ends, b) helically between the proximal and distal ends, c) radially around the inner surface, and d) in a crossed or hatched pattern.
11. The tubular device of claim 7 , wherein the relief features comprise a plurality of periodic bumps or pits in the inner surface of the inner liner.
12. The tubular device of claim 7 , wherein the relief features increase exposure of the inner surface to an activating agent of the ultraviolet-light-cured coating.
13. The tubular device of claim 7 , wherein the longitudinal edges are attached together to define a butted seam extending between the proximal and distal ends.
14. The tubular device of claim 7 , wherein the inner liner has a thickness between about 0.0001-0.0015 inch.
15. The tubular device of claim 7 , further comprising a handle on the proximal end.
16. The tubular device of claim 7 , wherein the tubular device is a catheter.
17. The tubular device of claim 7 , wherein the ultraviolet-light-cured coating comprises a hydrophilic coating curable using ultraviolet light.