Collapsible urinary catheter

摘要

A collapsible hollow elastomeric tube catheter for draining the urinary bladder. The wall of the collapsible catheter is constructed of minimally distensible, or non-distensible, biocompatible rubber material. Fluid may be injected in the catheter wall to cause stiffening of the catheter when desired, such as during insertion into the bladder. The proximal end of the catheter has a retaining mechanism within the urinary bladder without the use of a balloon.