Double lumen dilatation catheter
AssigneeThomas J. Fogarty
InventorsThomas J. Fogarty, Albert K. Chin
Life of this patent
Estimating the term…
Abstract
A dilatation catheter is provided with an elongated balloon element having a distal evertable dilating portion and a connector portion having a radially pleated proximal end. An always-open lumen of the catheter is defined in part by the balloon.
Claims6
A catheter comprising an elongated tubular catheter body, a catheter housing secured to the body, an open-ended tubular member carried by said housing axially therein, annular balloon means extending along said body into said housing, said balloon means comprising a dilatation portion and a connector portion, said dilatation portion being inverted within said body, being evertable therefrom, and having a mouth peripherally sealed to the distal end portion of said body, said connector portion interconnecting said dilatation portion and said housing and having a pleated section sleeved over said tubular member, said balloon means defining with said body and housing a lumen for the inflation and deflation of the dilatation portion of said balloon means, said balloon means with said tubular member defining an open lumen extending centrally through said catheter, and said pleated section being adapted to be depleated relative to said tubular member during elongation of said connector portion upon eversion movement of said dilatation portion.
A catheter comprising an elongated tubular catheter body, a catheter housing secured to the body, an open-ended tubular member carried by said housing axially therein, annular balloon means extending along the interior of said body into said housing, said balloon means having the distal end portion thereof peripherally sealed to the distal end portion of said body and having the proximal end portion thereof secured to the interior of said housing through a pleated tubular section of said proximal end portion sleeved over said tubular member, and means to introduce pressurized fluid between said body and balloon means to cause said balloon means to elongate and the distal portion thereof to evert from said body and then to expand, said pleated section being adapted to be depleated relative to said tubular member during elongation of said balloon means and said catheter having a permanently open central lumen defined by said balloon means and the tubular member.
Dependencies are inferred from the claim text.