This instrument is intended to lessen the difficulties encountered in collecting urine during ureteral catheterization, especially when catheters are retained for long periods, as when testing the functional capacity of each kidney.
Figure 1 shows the holder; the only dimensions noted are those of the opening for receiving test tube, its diameter being ¾ inch. The two projecting prongs are springs; by compressing these, tubes of smaller size may be employed.
Figure 2 shows the test-tube holder in position, and also a metal tent frame (a) constructed of brass, consisting of a center piece 2 inches broad, 24 inches long, and 1/12 inch thick, supported by legs 3/16 inch in diameter and 36 inches from tip to tip, with brass knobs on ends so as not to tear the bed-clothes. The legs being composed of brass, can be easily bent so as to cover persons of varying sizes.