Balloon coating method, balloon rotating method and balloon coating apparatus
AssigneeTerumo Kabushiki Kaisha
InventorsHiroshi Gotou, Yasuo Kurosaki, Eisuke Furuichi
Life of this patent
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Abstract
A balloon coating method for forming a coating layer containing a water-insoluble drug on the outer surface of a balloon of a balloon catheter, wherein the balloon catheter includes an elongate shaft possessing a distal portion at which is provided the balloon which is inflatable. The balloon coating method includes: holding the shaft on a support part capable of rotating about an axis of the balloon; and moving a dispensing tube for supplying a coating liquid containing the drug relative to the balloon in an axial direction of the balloon, while rotating the balloon together with the support part, thereby to coat the outer surface of the balloon with the coating liquid.
Claims20
A balloon coating method for forming a coating layer containing a water-insoluble drug on an outer surface of a balloon of a balloon catheter, the balloon catheter including an elongate shaft possessing a distal portion at which is provided the balloon which is inflatable and which possesses an axis, the shaft possessing an outer surface, the balloon coating method comprising:
- positioning the shaft on a rotatable support part so that the outer surface of the shaft faces the rotatable support part, the balloon projecting distally beyond a distal end of the support part and being held by a clamp;
- and
- moving a dispensing tube relative to the balloon in an axial direction of the balloon while rotating the balloon together with the support part about the axis of the balloon and while also dispensing the coating liquid containing the water-insoluble drug from the dispensing tube to coat the outer surface of the balloon with the coating liquid, the balloon and the support part being rotated by a motor that is proximal of the balloon, a part of the shaft that is supported on the rotatable support part being located closer to the balloon than the motor.
A balloon rotating method for rotating a balloon catheter that includes an inflatable balloon at a distal portion of an elongate shaft, the shaft possessing an outer surface, the balloon rotating method comprising:
- positioning the shaft on a support part that is rotatable about an axis of the balloon so that the outer surface of the shaft faces the rotatable support part, the balloon projecting distally beyond a distal end of the support part and being held by a clamp;
- and
- rotating the balloon together with the support part about the axis, the balloon and the support part being rotated by a motor that is proximal of the balloon, a part of the support part on which the shaft is positioned and that is rotated by the motor being located distal of a distal-most end of the motor.
A balloon coating method for forming a coating layer on an outer surface of a balloon of a balloon catheter, the balloon catheter including an elongate shaft possessing a distal portion at which is provided the balloon which is inflatable and which possesses an axis, the shaft possessing an outer surface, the balloon coating method comprising:
- positioning the shaft on a rotatable support part so that the outer surface of the shaft faces the rotatable support part, the balloon projecting distally beyond a distal end of the support part and being held by a clamp;
- and
- moving a dispensing tube relative to the balloon in an axial direction of the balloon while rotating the balloon together with the support part about the axis of the balloon and while also dispensing the coating liquid containing the water-insoluble drug from the dispensing tube to coat the outer surface of the balloon with the coating liquid, the shaft of the balloon catheter extending distally beyond a distal-most end of the motor and proximally beyond a proximal-most end of the motor.
Dependencies are inferred from the claim text.