초록 ▼

An expansible balloon catheter has at least a first exterior surface with a given coefficient of friction and a second exterior surface with a greater coefficient of friction. In a compact form only the first exterior surface is exposed to produce one coefficient of friction during transfer of the c

An expansible balloon catheter has at least a first exterior surface with a given coefficient of friction and a second exterior surface with a greater coefficient of friction. In a compact form only the first exterior surface is exposed to produce one coefficient of friction during transfer of the collapsed or uninflated balloon to and across a lesion. When inflated, the second surface dominates the first surface and produces a second coefficient of friction.

대표청구항 ▼

[ What is claimed as new and desired to be secured by Letters Patent of the United States is:] [1.] A medical balloon that is expansible from a compact state to an expanded state in a patient's vessel, the exterior surface of said balloon being formed with first and second exterior surface portions,

[ What is claimed as new and desired to be secured by Letters Patent of the United States is:] [1.] A medical balloon that is expansible from a compact state to an expanded state in a patient's vessel, the exterior surface of said balloon being formed with first and second exterior surface portions, said balloon, in its compact state, essentially exposing only said first exterior surface portions and, in its expanded state, exposing both said first and second exterior surface portions, said first and second external surface portions being conformed with said balloon to have first and second permanent coefficients of sliding friction, respectively, the first and second permanent coefficients of sliding friction being different whereby the first permanent coefficient of sliding friction is determinative of the characteristic of sliding friction when said balloon is in its compact configuration and the second permanent coefficient of sliding friction is substantially determinative of the overall characteristic of sliding friction when said balloon is in its expanded state.