Vorrichtung zur Transplantation von Hornhaut auf ein menschliches Auge

摘要

The device comprises a tubular housing having an axis and comprising a suction ring on its lower end face with an annular recess communicating with a corretor for connection to a suction pump. The housing has first stop means and second stop means. A tubular insert is mounted in the housing for rotation around the axis and axially displacable. The insert has a third stop means cooperating with the first stop means for defining an extended position of the insert and a fourth stop means coacting with the second stop means for defining a retracted position of the insert. The insert further has a micrometer female thread. A tubular knife holder with a knife for cutting a circular cut into the cornea is mounted in the insert. The knife holder has a micrometer male thread threaded into the female thread and a head. A scale and a marking on the head and on the insert are provided for preselecting a depth of the cut in the extended position of the insert.