Removable J-J ureteral stent

Details Removable J-J ureteral stent Removable J-J ureteral stent

1990-04-02

1991-02-05

Hafer, Robert A.

Surgery

Devices transferring fluids from within one area of body to...

604165, 604280, A61M 500, A61M 5178, A61M 2500

Patent

active

049901338

ABSTRACT:
The present invention is directed to a ureteral catheter stent which includes an elongated, relatively flexible, hollow tubular member having a plurality of drainage openings extending through a wall thereof and having two end portions each end portion being in the form of a hook and having at least one male and/or female interlocking unit formed into the end of at least one hook. The ureteral catheter stent of the present invention is used in conjunction with a follower which is interlocked therewith during insertion so that rotation or movement of the follower will create exact rotation of the stent on the guide wire during insertion so as to accurately and easily enable the user to place the hook of the stent in the direction desired. Additionally, the ureteral catheter stent of the present invention may have other sources for inserting other devices, rods, tubes of the like into the stent at a future date, without having to locate the lower end of a hook and without having to straighten the hook itself. This is achieved by including at least one segment of wire made of a memory material embedded into the wall of the tubular member for a distance of at least one end portion and at a location which is coincidental with the inside radius of the hook and also providing at least one cut through at least sixty percent (60%) of the tubular member at a location away from said wire and opposite thereto. With this mechanism, a user may, at some date after the insertion of the stent, push aside the hook or J end, utilizing the wire as a hinge and the slit as a door to expose the stent to a straight line use.

REFERENCES:
patent: 3890977 (1975-06-01), Wilson
patent: 4596564 (1986-06-01), Spetzler et al.
patent: 4747833 (1988-05-01), Kousai et al.
patent: 4790809 (1988-12-01), Kuntz
patent: 4790810 (1988-12-01), Pugh, Jr. et al.

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