In the practice of medicine and surgery it is quite essential that the instruments used shall be entirely free from septic matter, or shall be what is termed “surgically clean.” Especially is this desirable regarding instruments used in examinations of and operations on the female generative organs; hence the speculum commonly employed in these operations should be so made that without sacrificing its efficiency it may be quickly and thoroughly cleansed after each use, in order to prevent one patient being contaminated by excretions from another.

(via original patent application)

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