Ureteral stent guidewire system

Details Ureteral stent guidewire system Ureteral stent guidewire system

1987-09-01

1988-11-29

Truluck, Dalton L.

Surgery

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

604170, 128657, A61M 2500

Patent

active

047878843

ABSTRACT:
A dual wire guidewire system for inserting a ureteral stent with a proximal end with a reduced opening into the ureter of a patient comprises an elongated tubular pusher wire, an elongated guidewire and a retaining member. The pusher wire is open at both ends and sized to fit in the lumen of the stent. The leading end of the pusher wire has a diameter larger than the reduced opening in the stent. The guidewire is sized to fit within the lumen of pusher wire and has a leading end which is smaller in diameter than the reduced opening in the stent. The retaining member keeps the leading end of the guidewire from leaving the lumen of the pusher wire. When an obstruction is encountered in the ureter, the retaining member is disengaged and the leading end of the guidewire is passed through the reduced opening and maneuvered past the obstruction. The pusher wire and stent then can be advanced over the guidewire past the obstruction.

REFERENCES:
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patent: 4610657 (1986-09-01), Densow
patent: 4616652 (1986-10-01), Simpson
patent: 4671795 (1987-06-01), Mulchin
Radiology (U.S.A.) vol. 136, No. 1, pp. 230 and 231 (Jul. 1980).

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