Spring lancet
On application
Spring lancetthis lancet was used for general bloodletting. The lever on the side was pressed down to eject the springpowered lancet, creating one deep incision in the vein. The blood would then drain into a bleeding bowl. Spring lancets (also called button lancets and trigger lancets) originated in germany in the early 1700s. They were most popular in germany, the united states, and holland.