Bloodletting tools

Bloodletting was the first-line treatment until the early 20th century. Benefiting from human medical knowledge, the hippiatrists of the 17th century affirmed the theoretical foundations of the practice. In those times, they had a thousand reasons to let blood: bloodletting fought against "plenitude", when blood vessels supposedly contained too much blood. Bloodletting could also cool "heated" blood and "soothe bubbling". It let out corrupted humours, released the flow of blood and diverted blood from an over-loaded organ. The vein chosen was compressed to dilate it and pierced with a lancet or, more generally, by a fleam.

By the 18th century, the practice of bloodletting began to be challenged but still remained widespread in the 19th and well into the 20th century, as animal owners continued to request such treatment.

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