Bladder catheter

Details Bladder catheter Bladder catheter

1977-06-17

1979-05-15

Truluck, Dalton L.

Surgery

Truss

Pad

128243, A61M 2500

Patent

active

041542428

ABSTRACT:
Improved bladder catheter for insertion in a body cavity comprises a tubular member having a distal end and a proximal end, a longitudinally extending lumen open for drainage at the proximal end, and a plurality of circumferentially spaced longitudinally extending slits adjacent the distal end. At least the portion of the tubular member intermediate the extremities of the slits is flexible and at least one longitudinally extening spring element is disposed in each of the intermediate portions, the spring elements being unstressed when the intermediate portions are flush with the adjacent unslitted portions of the tubular member for biasing the intermediate portions to the flush position. The improved catheter also includes means within the tubular member for releasably retracting the distal end relative to the proximal end to flex the intermediate portions outwardly from the adjacent portions for retaining the catheter in the bladder. Upon release of the retracting means, the spring elements return to their unstressed state thereby returning the intermediate portions to the flush position to permit catheter withdrawal.

REFERENCES:
patent: 318535 (1885-05-01), Bihler
patent: 2211975 (1940-08-01), Hendrickson
patent: 2616429 (1952-11-01), Merenlender
patent: 2688329 (1954-09-01), Wallace
patent: 3397699 (1968-08-01), Kohl
patent: 3426744 (1969-02-01), Ball
patent: 3799172 (1972-09-01), Szpur

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