Medical hand apparatus e.g. vitrector, for use in ophthalmology field, has outer tube whose front-distal-effective area is tapered such that inner tube is guided into outer tube with minimum play in front-distal-effective area

摘要

The apparatus has a housing (2) comprising a handle (1) for holding the apparatus. A tool (4) i.e. cutting device, is supported by the handle or by a head (3) that is attached to the handle. The tube comprises an outer tube (6) projecting from the handle or the head and an inner tube that is guided into the outer tube in a movable manner, where an inner diameter of the outer tube is larger than outer diameter of the inner tube. A front-distal-effective area of the outer tube is tapered such that the inner tube is guided into the outer tube with minimum play in the front-distal-effective area.