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Indwelling urethral catheter system and method

  • US 4,946,449 A
  • Filed: 12/18/1986
  • Issued: 08/07/1990
  • Est. Priority Date: 12/18/1986
  • Status: Expired due to Term
First Claim
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1. An indwelling urethral catheter system for use with a human body comprising:

  • a catheter drainage shaft defining an enclosed drainage canal for extending through a urinary tract of the human body to provide urinary drainage therethrough and having distal and proximal ends;

    an anchoring means attached to the catheter drainage shaft near said distal end thereof for holding said drainage shaft in a proper position in said urinary tact;

    a valve means attached to said catheter drainage shaft and being positioned in said drainage canal near said proximal end of said shaft for being in a closed position to prevent flow of urine through said drainage canal but for being selectively moved from said closed position to an open position by applying force thereto from outside the human body for respectively allowing and disallowing fluid flow through said enclosed drainage canal;

    said catheter drainage shaft being of a length, and said anchoring means being located at a position therealong, such that when said catheter drainage shaft is held in said proper position in said urinary tract, said valve means and the proximal end of said drainage shaft are located entirely within said urinary tract yet accessible from outside the human body; and

    ,a removable insertion conduit separate from said catheter drainage shaft, said removable insertion conduit defining a drainage passage and having a distal end and a proximal end, said removable insertion conduit including at the distal end thereof an elongated connector stint having a cross-sectional size and a length for fitting into the drainage canal of the catheter drainage shaft from the proximal end thereof and extending from outside the human body into the human body to impinge on said valve means for holding said valve means open;

    said valve means having the further function of remaining open in response to engagement with said stint to be held open thereby, but upon removal of said stint from engagement therewith, of being allowed to close to prevent further passage of liquid through said drainage canal;

    whereby said catheter drainage shaft can be held in a urinary tract by said anchoring means with its proximal end being positioned in said urinary tract accessible to the meatus thereof to outside the human body and the removable insertion conduit can extend through the meatus of the urinary tract with elongated connector stint inserted into the proximal end of the drainage-shaft drainage canal for engaging said valve and thereby holding said valve open to allow continuous flow of urine past said valve and out through the insertion conduit drainage passage to outside the body and said removable insertion conduit can then be removed from the urinary tract, thereby removing said stint from the drainage canal of said catheter drainage shaft and from said urinary tract for disengaging said valve and allowing it to close but to be selectively opened by a force applied there from outside said body.

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