Vascular dilatation instrument and catheter
First Claim
1. A vascular dilatation instrument comprising:
- an inner tube defining a first lumen extending between an open distal end and a proximal portion,an outer tube disposed coaxially around said inner tube, having a distal end retracted a predetermined distance from the distal end of said inner tube and a proximal portion, and defining a second lumen with the outside surface of said inner tube,an inflatable member having one end attached to said inner tube and another end attached to said outer tube, and defining an interior space in fluid communication with said second lumen,a first opening disposed in the proximal portion of said inner tube in communication with said first lumen, anda second opening disposed in the proximal portion of said outer tube in fluid communication with said second lumen,whereinat least one of said inner tube and said outer tube includes a main body section based on a superelastic metal tube and a distal section made of a synthetic resin, the superelastic metal tube including a deformable distal zone which is more flexible than the remainder of the metal tube, and the deformable distal zone of said superelastic metal tube is gradually increased in flexibility from the proximal end to the distal end of the zone.
3 Assignments
0 Petitions
Accused Products
Abstract
A vascular dilatation instrument 1 includes an outer tube 2, an inner tube 5 extending through the outer tube 2, and an inflatable member 3 having one end attached to the inner tube 5 and another end attached to the outer tube 2. The outer tube 2 includes a superelastic or pseudoelastic metal tube 2b and a synthetic resin tube 2a covering the metal tube, the metal tube 2b having a distal zone provided with a slit or perforations 2e so that the distal zone is more flexible and deformable than the remainder of the metal tube. Also provided is a catheter 100 comprising a main body section which includes a superelastic metal tube 101 and a synthetic resin layer 104 covering the metal tube, the metal tube 101 having a distal zone provided with a slit or perforations 106 so that the distal zone is more flexible and deformable than the remainder of the metal tube.
294 Citations
31 Claims
-
1. A vascular dilatation instrument comprising:
-
an inner tube defining a first lumen extending between an open distal end and a proximal portion, an outer tube disposed coaxially around said inner tube, having a distal end retracted a predetermined distance from the distal end of said inner tube and a proximal portion, and defining a second lumen with the outside surface of said inner tube, an inflatable member having one end attached to said inner tube and another end attached to said outer tube, and defining an interior space in fluid communication with said second lumen, a first opening disposed in the proximal portion of said inner tube in communication with said first lumen, and a second opening disposed in the proximal portion of said outer tube in fluid communication with said second lumen, wherein at least one of said inner tube and said outer tube includes a main body section based on a superelastic metal tube and a distal section made of a synthetic resin, the superelastic metal tube including a deformable distal zone which is more flexible than the remainder of the metal tube, and the deformable distal zone of said superelastic metal tube is gradually increased in flexibility from the proximal end to the distal end of the zone. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 31)
-
-
11. A vascular dilatation instrument comprising:
-
a tubular member having a lumen therethrough and an opening in fluid communication with said lumen, a leading head, and an inflatable member having one end attached to said tubular member and another end attached to said leading head and defining an interior space in fluid communication with said lumen through said opening, said tubular member including a main body portion based on a superelastic metal tube and a distal portion made of a synthetic resin, the superelastic metal tube including a deformable distal zone which is more flexible than the remainder of the metal tube, and the deformable distal zone of said superelastic metal tube is gradually increased in flexibility from the proximal end to the distal end of the zone. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
-
-
22. A catheter comprising:
-
a main body section including a superelastic metal tube and a synthetic resin layer covering said metal tube, and a distal section made of a synthetic resin, the superelastic metal tube including a deformable distal zone which is more flexible than the remainder of the metal tube, and the deformable distal zone of said superelastic metal tube is gradually increased in flexibility from the proximal end to the distal end of the zone. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30)
-
Specification