초록 ▼

A catheter for insertion into a cavity, duct, or vessel to permit injection or withdrawal of fluids or to establish patency of a passageway comprises an elongated tubular catheter body having a distal end and a proximal end and an outer diameter, a drainage lumen extending through the catheter body

A catheter for insertion into a cavity, duct, or vessel to permit injection or withdrawal of fluids or to establish patency of a passageway comprises an elongated tubular catheter body having a distal end and a proximal end and an outer diameter, a drainage lumen extending through the catheter body from the distal end to the proximal end, the drainage lumen communicating with an opening in the catheter body at the distal end of the catheter body, an inflation lumen formed in the catheter body, and one or more of the following: a) inflatable tube sections disposed on the catheter body at the distal end of the catheter body for securing the distal end of the catheter body in a desired location when the tube sections are inflated, b) a valve connected to the inflation lumen for permitting backflow of the inflation fluid from the inflation lumen through the valve when a pre-set pressure value is reached, and c) a hollow reservoir for holding a pre-determined volume of inflation fluid.

대표청구항 ▼

[ What is claimed is:] [1.]1. A catheter for insertion into a cavity, duct, or vessel having an opening to permit injection or withdrawal of fluids or to establish patency of a passageway, comprisingan elongated tubular catheter body having a distal end, a proximal end, and an outer diameter,a drain

[ What is claimed is:] [1.]1. A catheter for insertion into a cavity, duct, or vessel having an opening to permit injection or withdrawal of fluids or to establish patency of a passageway, comprisingan elongated tubular catheter body having a distal end, a proximal end, and an outer diameter,a drainage lumen extending through the catheter body from the distal end to the proximal end,the drainage lumen communicating with an opening in the catheter body at the distal end of the catheter body,inflatable tube means disposed on the catheter body at the distal end of the catheter body for securing the opening in the catheter body at the distal end of the catheter body substantially at the opening of the cavity, duct, or vessel when the inflatable tube means is inflated wherein the inflatable tube means comprises a plurality of hollow inflatable tube sections extending in parallel from the distal end of the catheter body axially along a central axis of the catheter body when the hollow inflatable tube sections are not inflated and bowing outwardly away from each other and away from the central axis to form a substantially hollow sphere having a passageway between each adjacent tube section for fluid to and from the opening in the catheter body at the distal end of the catheter body when the inflatable tube means is inflated,an inflation lumen formed in the catheter body and in communication with the inflatable tube means, andan inflation port formed in the catheter body in communication with the inflation lumen,the inflatable tube means being substantially cylindrical when not inflated and having a diameter substantially matching the outer diameter of the catheter body.