File:The Pathology and treatment of venereal diseases (electronic resource)- including the results of recent investigations upon the subject (1866) (14768834324).jpg

Identifier: 04801644.5817.emory.edu
Title: The Pathology and treatment of venereal diseases (electronic resource): including the results of recent investigations upon the subject
Year: 1866 (1860s)
Authors: Bumstead, Freeman J. (Freeman Josiah), 1826-1879
Subjects: Sexually transmitted diseases Sexually transmitted diseases Sexually Transmitted Diseases Venereology
Publisher: Philadelphia : Henry C. Lea
Contributing Library: Emory University, Woodruff Health Sciences Center Library
Digitizing Sponsor: Emory University, Woodruff Health Sciences Center Library

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ned as a permanent catheter.The vesical extremity of the instrument has two eyes for the escapeof urine, one situated half an inch, and the opposite one an inchfrom the extremity. They are often made too large, and allow ofthe protrusion of folds of the lining membrane of the canal, ob-structing the passage of the catheter, and exciting unnecessary pain.Their edges should be bevelled off with nicety. Instead of thesetwo lateral eyes, the end of the catheter is sometimes pierced withnumerous small apertures, which are objectionable on account oftheir liability to become clogged with blood or mucus. The degree of curvature of this and other instruments used inurethral exploration is a matter of no small importance. It wouldseem desirable that the curve should correspond to the natural cur-vature of the least movable portion of the urethra itself, which isthat portion underlying the symphysis pubis. Mr. Thompson hasadopted this principle in the construction of catheters, and his Fig. 17.
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example has of late been very generally followed, since it has beenfound that experience confirms the deductions from theory, and thaturethral instruments with such a curvature are most readily intro- sounds. 283 duced. When speaking of the anatomy of the urethra, the sub-pubiccurve was described as an arc of a circle three and a quarter inchesin diameter, the chord of the arc measuring two inches and three-quarters. The accompanying figure from Mr. Thompson exhibits acatheter and sound so bent as to correspond to this curve. In order that the precise direction of the point of the instrumentmay be indicated by the direction of its shaft, it is desirable that aconstant relationship should exist between the two. According tothe principle of construction here recommended, this is a right anglein the catheter, and in the sound, a somewhat shorter instrument, anangle of 120°, or a right angle and a third. It is desirable to have one or more catheters graduated in inchesand fractions of an

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