Tube having an interior lubricious coating and systems and methods of applying the same
AssigneesCrannmed Limited, Technological University Dublin
InventorsLiam Farrissey, Brendan Duffy, Sankalp Agarwal
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Abstract
A method for coating an inner lumen surface of a tube with a coating solution comprises the steps of moving a coating solution through a tube via a withdrawal system and depositing the coating solution onto an inner lumen surface of the tube. The thickness of the coating solution is deposited onto the inner lumen surface of the tube is between 1 μm and 25 μm. The method further comprises applying a pressure to the tube using a pressure source when the coating solution is within the tube to manipulate a surface tension between the coating solution and the inner lumen surface of the tube.
Claims23
A method for coating an inner lumen surface of a tube with a coating solution comprising the steps of:
- moving a coating solution through a tube from a second end of the tube toward a first end of the tube opposite the second end via a withdrawal system disposed at the second end and depositing the coating solution onto an inner lumen surface of the tube, wherein a thickness of the coating solution being deposited onto the inner lumen surface of the tube is between 1 um and 25 um;
- applying a first pressure to the tube using a pressure source disposed at the first end when the coating solution is within the tube to manipulate a profile of a meniscus of the coating solution to control the thickness of the coating solution being applied to the inner lumen surface of the tube;
- and
- withdrawing the coating solution from the tube at a controlled flow rate via the withdrawal system, the withdrawal system applying a second pressure simultaneously to and independently of the first pressure applied by the pressure source.
A method for coating an inner lumen surface of a tube with a coating solution comprising the steps of:
- moving a coating solution through a tube from a second end of the tube toward a first end of the tube opposite the second end via a withdrawal system disposed at the second end and depositing the coating solution onto an inner lumen surface of the tube, wherein a thickness of the coating solution being deposited onto the inner lumen surface of the tube is between 1 um and 25 um, wherein the withdrawal system includes a pump;
- applying a positive pressure to the tube using a pressure source disposed at the first end when the coating solution is within the tube to manipulate a profile of a meniscus of the coating solution to control the thickness of the coating solution being applied to the inner lumen surface of the tube;
- withdrawing the coating solution from the tube at a controlled flow rate via the withdrawal system, the withdrawal system applying a second pressure simultaneously to and independently of the positive pressure applied by the pressure source;
- and
- curing the coating solution such that it adheres to the inner lumen surface of the tube, wherein the coating solution is heat cured between 20 degrees Celsius and 90 degrees Celsius.
Dependencies are inferred from the claim text.