Catheter system
OwnerJames J. Frassicainventor
Life of this patent
Estimating the term…
Abstract
Apparatus and methodology for applying catheters, dilators and occluders to mammalian genito-urinary and gastro-intestinal passages, using rotational manipulation of threaded or helically-formed catheters and threaded dilators and occluders. Threaded or helical catheters are inserted into the opening of the selected passage far enough to engage a thread segment, the other end of the catheter is then manually rotated to draw the catheter into the passage. Threaded dilators and occluders are similarly applied.
Claims16
A catheter for catheterizing mammalian genito-urinary and gastro-intestinal passages, said catheter comprising a flexible catheter tube having a lower end and an upper end and a lumen communicating there between, said upper end of said tube configured with an external screw thread of uniform pitch, said thread having a thread height of at least one fifth (1/5) of the outside diameter of said catheter tube and a thread pitch not greater than the circumference of said thread.
A method for catheterizing a mammalian genito-urinary or gastro-intestinal passage comprising the steps of:
- utilizing a flexible catheter having an upper end and a lower end and a lumen communicating there between, said catheter configured with an external screw thread of uniform pitch at said upper end, said thread having a thread height of at least one fifth (1/5) of the outside diameter of said catheter and a thread pitch not greater than the circumference of said thread,
- introducing the tip of said catheter into an opening to said passage,
- aligning said tip with said passage,
- advancing said tip into said passage with a combination of rotational and forward pressure until said thread is engaged one turn into said passage,
- rotating said catheter thereby advancing said catheter into position within said passage.
A catheter for catheterizing mammalian genito-urinary passages, said catheter comprising a flexible catheter tube having a lower end and an upper end and a lumen communicating there between, said upper end of said tube configured with an external screw thread of uniform pitch, said thread having a thread height of at least one fifth (1/5) of the outside diameter of said catheter tube and a thread pitch not greater than the circumference of said thread.
Dependencies are inferred from the claim text.