BALLOON CATHETER
First Claim
1. A balloon catheter comprising:
- an elongated catheter main body portion extending in an axial direction, the catheter main body portion possessing a distal portion and a proximal portion proximal to the distal portion in the axial direction;
a balloon provided on the distal portion of the catheter main body portion, the balloon being inflatable to expand radially outward into an inflated state and deflatable to contract radially inward into a deflated state;
the catheter main body portion comprising a hollow outer tube and a hollow inner tube disposed within the outer tube, the outer and inner tubes extending in the axial direction, the outer and inner tubes each possessing an inner surface and an outer surface;
the balloon comprising a contact portion that contacts the outer surface of the inner tube and a vane portion protruding from the contact portion radially outward when the balloon is in the deflated state; and
the contact portion of the balloon comprising a connecting portion that connects the balloon to the catheter main body portion.
1 Assignment
0 Petitions
Accused Products
Abstract
A balloon catheter including an elongated catheter main body portion and a balloon provided on the distal portion of the catheter main body portion. The balloon is inflatable to expand radially outward into an inflated state and deflatable to contract radially inward into a deflated state. The catheter main body portion includes a hollow outer tube and a hollow inner tube disposed within the outer tube. The balloon includes a contact portion that contacts the outer surface of the inner tube and a vane portion protruding from the contact portion radially outward when the balloon is in the deflated state. The contact portion of the balloon includes a connecting portion that connects the balloon to the catheter main body portion.
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Citations
19 Claims
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1. A balloon catheter comprising:
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an elongated catheter main body portion extending in an axial direction, the catheter main body portion possessing a distal portion and a proximal portion proximal to the distal portion in the axial direction; a balloon provided on the distal portion of the catheter main body portion, the balloon being inflatable to expand radially outward into an inflated state and deflatable to contract radially inward into a deflated state; the catheter main body portion comprising a hollow outer tube and a hollow inner tube disposed within the outer tube, the outer and inner tubes extending in the axial direction, the outer and inner tubes each possessing an inner surface and an outer surface; the balloon comprising a contact portion that contacts the outer surface of the inner tube and a vane portion protruding from the contact portion radially outward when the balloon is in the deflated state; and the contact portion of the balloon comprising a connecting portion that connects the balloon to the catheter main body portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A balloon catheter comprising:
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an elongated catheter main body portion extending in an axial direction from a proximal end to a distal end, the catheter main body portion possessing a radial direction; the catheter main body portion comprising a cylindrical outer tube and a cylindrical inner tube within the outer tube, the outer tube possessing a distal end and the inner tube extending in the axial direction distally beyond the distal end of the outer tube, the inner and outer tubes each possessing an inner surface and an outer surface; a balloon connected to the inner tube and to the outer tube of the catheter main body portion, the balloon being inflatable to expand radially outward into an inflated state and deflatable to contract radially inward into a deflated state, the balloon possessing an inner surface; a plurality of connecting portions fixedly bonding the inner surface of the balloon to the outer surface of at least one of the inner tube and the outer tube, the connecting portions being spaced apart from one another in a circumferential direction of the balloon catheter; the balloon comprising a plurality of vane portions, each of the vane portions being adjacent to the connecting portions so that the vane portions and the connecting portions alternate in the circumferential direction, the vane portions protruding radially outward beyond the balloon at the connecting portions when the balloon is in the deflated state; and the vane portions of the balloon inflating and extending radially outwardly when the balloon is in the inflated state, the connecting portions preventing the balloon from expanding radially outward at the connecting portions during inflation. - View Dependent Claims (11, 12, 13, 14, 15)
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16. A method of treating a lesion area in a living body using a balloon catheter, comprising:
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moving the balloon catheter within the living body to the lesion area, the balloon catheter comprising an elongated main body extending in an axial direction and a balloon fixed to the elongated main body, the balloon possessing an outer diameter, the balloon being inflatable to expand radially outward into an inflated state and deflatable to contract radially inward into a deflated state, the balloon being in the deflated state during the moving of the balloon catheter within the living body to the lesion area; positioning the balloon of the balloon catheter in the lesion area, the outer diameter of the balloon being smaller than an inner diameter of the lesion area; inflating the balloon of the balloon catheter while the balloon catheter is positioned at the lesion area so that the balloon expands radially outward into contact with the lesion area to widen the lesion area of the living body, circumferentially spaced apart vane portions of the balloon expanding radially outwardly when the balloon is inflated while circumferentially spaced apart non-inflation portions of the balloon do not expand radially outwardly, the vane portions and the non-inflation portions axially overlapping one another, and deflating the balloon to contract the balloon radially inwardly into the deflated state and removing the balloon catheter from the lesion area of the living body. - View Dependent Claims (17, 18, 19)
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Specification