Balloon Catheter Systems
AssigneeTerumo Kabushiki Kaisha
InventorsAyu Takagi, Hironori Takai
Life of this patent
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Abstract
A balloon catheter and balloon system particularly useful with drug-coated balloons is described. In some embodiments, the balloon catheter system includes various features designed to address problems with drug rubbing off due to contract friction during delivery of the balloon—including by utilizing a protective sleeve to shield the drug-coated balloon. In some embodiments, the balloon catheter system includes an inner high-pressure balloon and an outer drug-coated balloon to mitigate the time associated with performing vessel dilation.
Claims21
1-17. (canceled)
A balloon catheter adapted for insertion into a hemostasis valve of a guide catheter comprising:
- a slit sleeve configured to be positioned within the hemostasis valve of the guide catheter;
- a drug coated balloon of the balloon catheter configured to be inserted through the slit sleeve positioned within the hemostasis valve of the guide catheter;
- a longitudinal opening extending along an entire length of only a side of the slit sleeve;
- the slit sleeve forming a generally tubular shape and having a first non-flared section in which the longitudinal opening has a first width, and a second flared end section in which the longitudinal opening has a second width that is larger than the first width and increases in width in a direction away from the first non-flared section;
- wherein the first width of the longitudinal opening in the first non-flared section of the slit sleeve is about 0.002 inch.
A system for loading a drug coated balloon of a balloon catheter into a hemostasis valve of a guide catheter to minimize drug loss from the drug coated balloon comprising:
- a slit sleeve configured to be positioned within the hemostasis valve of the guide catheter;
- the drug coated balloon of the balloon catheter configured to be inserted through the slit sleeve positioned within the hemostasis valve of the guide catheter;
- a longitudinal opening extending along an entire length of only a side of the slit sleeve;
- the slit sleeve forming a generally tubular shape and having a first non-flared section in which the longitudinal opening has a first width, and a second flared end section in which the longitudinal opening has a second width that is larger than the first width and increases in width in a direction away from the first non-flared section;
- wherein the first width of the longitudinal opening in the first non-flared section of the slit sleeve is about 0.002 inch.
A drug coated balloon adapted for insertion into a hemostasis valve of a guide catheter comprising:
- a slit sleeve configured to be positioned within the hemostasis valve of the guide catheter;
- the drug coated balloon configured to be inserted through the slit sleeve positioned within the hemostasis valve of the guide catheter;
- a longitudinal opening extending along an entire length of only a side of the slit sleeve;
- the slit sleeve forming a generally tubular shape and having a first non-flared section in which the longitudinal opening has a first width, and a second flared end section in which the longitudinal opening has a second width that is larger than the first width and increases in width in a direction away from the first non-flared section;
- wherein the first width of the longitudinal opening in the first non-flared section of the slit sleeve is about 0.002 inch.
Dependencies are inferred from the claim text.