blōd-seax

blōd-seax, n.n: a blood-knife, a lancet. (BLOAD-say-aks)

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Surgeon removes ‘fungus’ (possibly a polyp) from patient’s nose in a 12th-century medical miscellany. Oxford, Bodleian Library, Ashmole 1462, f. 10r. The MacKinney Collection of Medieval Medical Illustrations. [dc.lib.unc.edu]

snid-īsen

snid-īsen, n.n: a lancet (a small, broad, two-edged surgical knife or blade with a sharp point). [SNID-EE-zen]

Blood_letting

Aldobrandino of Siena’s Le Régime du corps. France, N. (Lille?), 3rd quarter of the 13th century (perhaps c. 1285). British Library, Sloane 2435, fol. 11v. [bl.uk]

Thanks to @RTGoodman and @jmcarolan for identifying today’s image!