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In the early part of the 18th century the mechanization of Petit's tourniquet is one of the most outstanding medical inventions. During more than a century that tool without any noticeable change was in the surgical boxes in all countries. As the mechanic Peron has been intensely working to handcraft the device with the utmost urgency Petit's tourniquet could have become that of Petit and Peron.

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.

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.