Method for severing or removing a biological structure, especially bones
AssigneeWittenstein AG
InventorsMichael Butsch, Rainer Baumgart
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Abstract
The invention relates to a method for severing or removing a biological structure, especially bones, by using a water jet cutting device (R) from which a pressurized severing medium (4) is discharged. According to the invention, the severing medium (4) should be projected onto the biological structure in a pulsed manner.
Claims7
A cutting-nozzle element for severing or removing a biological structure when the cutting-nozzle element is fed with a fluid under pressure, comprising a hollow cutting-nozzle body having a longitudinal axis, the hollow cutting-nozzle body receives a shut-off element which is movable within the hollow cutting-nozzle body in a reciprocating manner along the longitudinal axis wherein the hollow cutting-nozzle body defines with the shut-off element an annular space, at least one nozzle extending radially with respect to the longitudinal axis and communicating with the annular space, and further including means for reciprocating the shut-off element to provide a pulsed feed of fluid under pressure to the at least one radial nozzle.
Dependencies are inferred from the claim text.