A simplified resistance valve for the pneumatic treatment of pulmonary affections / by Solomon Solis-Cohen.

  • Solomon Solis-Cohen
Date:
1895
Catalogue details

Licence: Public Domain Mark

Credit: A simplified resistance valve for the pneumatic treatment of pulmonary affections / by Solomon Solis-Cohen. Source: Wellcome Collection.

Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.

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    extreme limit this resistance is nothing; at the other extreme it is about one-half an at- mosphere, being regulated by the tension of a spring, as in the more elaborate apparatus previously devised. Trial of the instrument will be necessary in order to fix the point of adjustment in each case. When the inspired air is made to encounter resistance at B, the patient is forced to make a greater effort to inhale, the air within his chest is correspondingly rarefied and the physiologic and therapeutic effect is that of inspiration, of rarefied air. When the exhaled air is made to encounter resistance at C, greater expiratory effort, with corresponding compression of the chest is necessary; and the physiologic and therapeutic effect is the same as that of expiration into condensed air. In certain cases of pulmonary tuberculosis, chronic bronchitis, emphysema and asthma, these expedients, one or both, will be found of much service. The greatest usefulness of this little instrument will be in developing the chests of those subjects predisposed to tuberculosis in whom such a prophylactic regime is advisable, in the treatment of pul- monary tuberculosis in its early stages and in the after-treatment of patients who have par- tially or completely recovered under other methods of pneumotherapy. It might be called a lung expander had not that term been brought into disrepute through certain quackish advertisements. The instrument is submitted to the pro- fession in the hope that its simplicity and cheapness may render it generally availed of. It has been made and will be marketed by Messrs. Codmann & Shurtleff, of Boston, for whose repeated acts of courtesy and patient endeavors to satisfy every requirement, I desire again to make acknowledgment.
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