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Many practitioners and all urologists are familiar with the difficult problem of removing clotted blood from the urinary bladder; the larger clots clog the fenestrum of any instrument passed into the bladder through the urethra, preventing the bladder contents from being evacuated through an instrument of very large caliber, regardless of the expulsive efforts of the bladder detrusor, even when aided by the voluntary abdominal muscular efforts of the patient.
A method which I have used for some time has enabled me to empty the bladder completely and in a few minutes of a large quantity of clotted blood. The instruments required are in the armamentarium of all urologists, with the addition of a small wire curet which is simple to construct.
The wire curet consists of a small loop on one end of the wire which will fit easily into the instrument, this loop being at right angles to the wire
Davis TM. A SIMPLE METHOD FOR REMOVING BLOOD CLOTS FROM THE URINARY BLADDER. JAMA. 1929;92(26):2168. doi:10.1001/jama.1929.92700520001007