Medical instrument for cutting biological and especially human tissue
AssigneeKarl Storz GmbH & Co. KG
InventorDaniel Seeh
Life of this patent
Estimating the term…
Abstract
The invention relates to a medical instrument for cutting biological and especially human tissue, having a hollow cutting tube that can rotate by means of an engine around its longitudinal axis, on whose distal end at least one blade is mounted, as well as with a handle in which the cutting tube is mounted for control purposes. In order to produce a medical instrument for cutting biological and especially human tissue in which the powering of the cutting tube is of simple construction and involves minor losses of capacity, it is proposed with the invention that the engine is configured as a hollow-shaft engine mounted on the cutting tube.
Claims21
1-28. (canceled)
A medical instrument for cutting biological tissue, having a hollow cutting tube that can rotate around its longitudinal axis by means of an engine, on whose distal end at least one blade is mounted, and also having a handle in which the cutting tube is mounted for purposes of control, and with the engine configured as a hollow-shaft engine positioned on the cutting tube, distinguished in that the cutting tube and the hollow-shaft engine are coupled with one another by rods running in the axial direction of the cutting tube and/or positioned on the hollow-shaft engine, which is insertable into corresponding openings in the other respective component.
A medical instrument according to claim 1, distinguished in that four rods are positioned at equal distances around the longitudinal axis of the cutting tube and running in the axial direction of the cutting tube, and on the hollow-shaft engine at least four openings are formed for inserting the rods.
A medical instrument according to claim 1, distinguished in that the rods that couple the cutting tube and the hollow-shaft engine to one another are positioned on an adapter that can be secured on the cutting tube.
A medical instrument according to claim 1, distinguished in that the cutting tube can be powered directly and gearlessly by means of the hollow-shaft engine.
A medical instrument according to claim 1, distinguished in that the hollow-shaft engine is configured as an outer rotor engine.
A medical instrument according to claim 1, distinguished in that the cutting tube is mounted in the engine housing by means of at least one bearing.
A medical instrument according to claim 1, distinguished in that the cutting tube is positioned on the distal side in a trocar sleeve coaxially surrounding the cutting tube.
A medical instrument according to claim 1, distinguished in that the handle has a central passage bore hole, which on the proximal side forms an extension of the hollow cutting tube.
A medical instrument according to claim 1, distinguished in that an additional, angled handgrip is securable on the handle.
A medical instrument for cutting biological, having a central canal extending along a longitudinal axis thereof for inserting a hollow cutting tube that rotates by means of an engine around its longitudinal axis and on whose distal end at least one blade is positioned, as well as for inserting at least one additional medical instrument that is insertable into the hollow cutting tube, in such a way that at least one insulation agent is provided for gas-proof insulation of the central canal, distinguished in that the at least one insulation agent is configured as a flap valve that is insertable into the central canal and whose two flap wings pointing toward the distal end of the central canal are contiguous to one another at an angle that is smaller than the angle of the blade on the distal end of the cutting tube that is insertable into the central canal.
Dependencies are inferred from the claim text.