Specification of Jean Prosper Koening : pneumatic catheter.

  • Koening, Jean Prosper.
Date:
1859
Catalogue details

Licence: Public Domain Mark

Credit: Specification of Jean Prosper Koening : pneumatic catheter. Source: Wellcome Collection.

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    Koenig's Improvements in a Surgical Instrument called a Pneumatic Catheter. Aase A has a cock X fitted thereto, which, when the instrument is in use, and the urine is flowing into the vessel A, this cock may be opened and allow the urine to pass out ; and when it has ceased to flow, the air entering, will destroy the vacuum. Figures 5 and 6 exhibit another modification of the first above-mentioned instrument, and differs therefrom in the following 5 respects, that is to say, instead of affixing the stopper B to the tube E, I make them separate, and connect the said tube to the vessel A, as exhibited. I also use a spirit lamp (shewn by red lines) which fits into the spout of the vessel A. To use this instrument or apparatus, the operator withdraws the stopper and the spirit lamp, and setting fire to the spirit, turns the vessel 10 A upside down, and inserts the lamp and stopper thereinto, holding the vessel in that position until the flame is extinguished, he then operates with in a similar manner to that before described. I now proceed to describe another form of construction of pneumatic catheter, as follows :—Figure 7 of Sheet 1 exhibits an exhausting and 15 forcing pump of metal, having openings and tubes at the lower part thereof furnished with valves A and B; that marked A shuts as the piston C ascends, and that marked B opens, and as the piston descends, the valve B shuts, and the valve A opens to allow the gases or liquids to be driven out by the piston. This instrument can be applied to all cases of catheterism, and moreover may 20 be used for the extraction of all gases or liquids diffused throughout the organs of the human system. I would here observe, that for the extraction of gases, and in cases of abdominal and tympanite meteorism, and of physometry, &c., it is necessary in cases of tympanite to adapt to the extremity of the india- rubber tube E, a broad pointed pipe furnished with a cup or disc of the same 25 material. The intestines of the patient must first be cleared, and then he will be relieved at each stroke of the piston of the instrument, and ultimately the intestines will assume their ordinary size. For the extraction of liquids diffused in the plura, the peritonaeum, &c., it will be necessary to thrust the extremity of the tube into the artificial opening, 30 and impart motion to the piston of the instrument. At Sheet 2, Figures 8 and 9 exhibit two views of another form of pump or catheter, being a modification of the instrument lastly above described, and marked Figure 7, at Sheet 1, and differing therefrom in the following respects, that is to say, the piston rod instead of being formed plain, has a 35 screw cut about it, over which fits a ferrule D, formed with four projecting pieces X, X, for turning same round. The bottom of this said ferrule rests upon, and is fitted into a recess formed in the lid of the pump barrel, as exhibited at Figure 9. By turning round the ferrule D in one direction, the
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