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Show 20 INTRODUCTION OF THE CATHETER. INTRODUCTION OF THE CATHETER. the flexible bougie, there is little room for lmowledge or deg, fingers of the left hand. Resting the edge of the hand on the belly of the patient, the point of the catheter is introduced into the urethra, with the concavity of the instrument towards the pubes. It is then glided down into the urethra, there being no difficulty nor obstruction until the point passes the bulb which is hung under the arch of the os pubis. Here an obstruction is generally felt, and the point terity; its passage is entirely governed by the canal. --.-- Of the silver catheter, these are the curves which I would recommend- 221 of the instrument is felt to overcome some resistance, like that of a membranous projection. This I conceive to proceed most generally from the point of the catheter lodging in the dilatable sinus of the urethra, before the membranous part, and where the urethra is tied to the arch of the os pubis, as at F, or just before the prostate gland at D. If it proceeds from the first of these causes, then often the mere de« pression of the handle of the catheter (as B) will not disenx tangle the point; for the membrane rises with it, and 0p- poses a further barrier to its entrance into the bladder. :nrmir vmm M09917ll . \\t\\\\l\\.3 l /////, g!//// %/¢/K r :/ {Jf/ ////// 'Ihe surgeon should always be provided with a variety of catheters, with one or two of the elastic gum catheters. ---._ The patient is placed against the wall, or laid in bed, 01‘ sitting with his breech over the edge of the chair. The catheter is laid for a little time in warm water, then oiled, and held with the wings betwixt the thumb and the fore and middle finger. The penis is held behind the glans, with the J %' Explanation of the Plate of a Section of the Pelvis. l, The bladder. 2, the prostate gland. 3, the rectum. file 0:; pubis. 4, A, the catheter, introduced into the urethra, ('1'qu fi'lsx‘rzu‘trd (If E. #119 handle qf the ('(zl/zclr'r 7's depressant, \‘c |