An essay on the history of electrotherapy and diagnosis; . Nitze-Leiter 1879 cystoscopes for examination of anterior and posteriorwalls of bladder respectively. 118 AN ESSAY ON THE formed one of the most unreliable parts of the instrument,since it was liable to become scorched, and therefore to inter-fere with the illumination, to say nothing of the possibilitiesof cracking and consequent leakage. The window c in thestraight tube was not closed, and consequently the lenses ofthe telescope tube were apt to be soiled by the contents ofthe bladder. Such was the prototype of the instrument subsequ
An essay on the history of electrotherapy and diagnosis; . Nitze-Leiter 1879 cystoscopes for examination of anterior and posteriorwalls of bladder respectively. 118 AN ESSAY ON THE formed one of the most unreliable parts of the instrument,since it was liable to become scorched, and therefore to inter-fere with the illumination, to say nothing of the possibilitiesof cracking and consequent leakage. The window c in thestraight tube was not closed, and consequently the lenses ofthe telescope tube were apt to be soiled by the contents ofthe bladder. Such was the prototype of the instrument subsequentlyknown as the Nitze-Leiter cystoscope, of 1879. Of this, twoforms were constructed; one for the examination of the neck,. Beak of Nitze-Leiter 1879 cystoscope in section. Plantinum spiralremoved. The small figure shows a tranverse section of theshaft of the instrument. anterior and lateral aspects of the bladder, and the second forthe posterior and basal aspects. The two patterns merelydiffer in the variations of constructional detail necessary forthe attainment of these objects. Once more the source ofillumination is the heated platinum spiral, which occupies thewhole length of the beak of the instrument. The interiorof the beak is shown in the next figure, but for the sake ofclearness it is represented with the platinum spiral in position one end of the platinum spiral is receivedinto the hollow metal cup b, which is connected with theinsulated wire a. The other end of the spiral presses againstthe inner wall of the beak, the body of the instrument thus HISTORY OF ELECTROTHERAPY 119 serving to complete the circuit when suitable connections aremade with the batter}. The shaft measures rathe
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Keywords: ., bookcentury1900, bookdecade1920, bookpublisherlondo, bookyear1922
