Importance

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Abstract

A non-over-the-wire catheter for use in angioplasty including a core wire which extends distally beyond a distal end of a tubular member. The tubular member defines an interior passage which is in fluid communication with a distal interior passage of a waist tube that extends about the core wire. An inflatable balloon member extends about the core wire and is in fluid communication with the distal interior passage of the waist tube. A distal end of the balloon member extends coaxially about a portion of the core wire so as to allow rotational movement of the core wire relative to the balloon member. First and second sealing plugs are secured to the core wire proximal to and distal of, respectively, the distal end of the balloon member. The sealing plugs provide resistance to flow of pressurized balloon fluid to minimize leakage through the distal end of the balloon member. The first and second sealing plugs also prevent the waist tube and balloon member from being displaced axially relative to the core wire.

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First Claim