The science and art of surgery : being a treatise on surgical injuries, diseases, and operations . lithotrite should be well greased witholive oil, so that the branch and screw may work smoothly. Lard orointment should not be used for this purpose, as it is apt to clog, and toentangle gritty bits of calculus. 2. Seizure of the Stone.—The next point is to seize the stone,which will generally be fovmd in the situation where its presence wasdetected during the sounding of the bladder. If large, the stone willprobably lie low, near the neck of the bladder; if small, it is most fre-quently met with
The science and art of surgery : being a treatise on surgical injuries, diseases, and operations . lithotrite should be well greased witholive oil, so that the branch and screw may work smoothly. Lard orointment should not be used for this purpose, as it is apt to clog, and toentangle gritty bits of calculus. 2. Seizure of the Stone.—The next point is to seize the stone,which will generally be fovmd in the situation where its presence wasdetected during the sounding of the bladder. If large, the stone willprobably lie low, near the neck of the bladder; if small, it is most fre-quently met with at the right side, or at the inferior fundus. Should itbe situated in a depression in this region, it may most i*eadily be seizedby introducing a finger in the rectum, and raising up the lower part ofthe bladder; or, better still, by raising the pelvis on a hard pillow, andso causing the stone to roll up on the posterior surface. Brodie stronglyadvises that the lithotrite should never be used as a sound to ascertainthe position of tlie stone; if this be done, the patient sufl:ers pain, the. Fig. 768.—Brodies Method of Seizing the Stone. bladder is irritated, the urine is expelled, and the stone not readily seizing the calculus, a good deal of tact is required. There are twoways of seizing the stone. Brodie recommends that it should be doneby pushing the female blade of the lithotrite against the inferior fundus BREAKING THE STONE. 779 of the bladder, pressing gently down with it so as to make a conicaldepression in this situation, and then inclining the beak towards thestone, drawing back the male blade with the thumb (Fig. 768); with aslight shake or jerk, the Surgeon tiien tries to get the calculus betweenthe blades, at the same time that the male branch is being pushed for-wards to seize it. In this manoeuvre the female blade should be movedas little as possible, but the stone must be seized by pressing the thumbupon the half-circle of steel fixed on the male
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