Biomedical subjects

Claude Renner

Publications and source records attributed to Claude Renner.

3 recordsLinked to original sources

PubMedDate not supplied

[Concerning hearing aids].

Ear trumpet copy musical instruments as: horn, trump, trombone, banjo and specially bell. All of them utter sound but their shape is used by ear trumpet to collect sound. Sea shells were used as trump by fishermen for many centuries, the same shells became an hearing device during the nineteenth century by inversion of his function. For creators a same shape has necessarily two opposite functions: if an instrument is able to utter sound, the same design is also able to collect sound. Megaphone and ear trumpet are entirely similar but their function is just the opposite.

Hearing Aids↗

PubMedDate not supplied

[The pewter bleeding bowls].

In the late seventeenth century, then along the eighteen and nineteenth centuries the amount of the bloodlettings was measured by means of three pewter bleeding bowls that held three ounces of blood, about 300 millilitres. In the middle of the nineteenth century new and large bleeding bowls with metric graduations were manufactured only by the Parisian potters.

Equipment and Supplies↗

PubMedDate not supplied

[Tin bubble pots].

In the sixteenth century Ambroise Pard uses of an hermetic pewter pot to obtain a beef-tea as a medical therapy. He describes the protocol to prepare it and the way to ordain the beef-tea to patients. The same hermetic spheric pewter pot is always in use in the middle of nineteenth century. At that period the discovery of creatin confirms the usefulness of that medical pewter pot who seems to be an only French production.

Animals↗