Abstract: A holder provided with an oscillatory movable ultramicrotome cutter which is arranged on a cutter holder and oscillatory movable by means of a piezo-electric element. The cutter is supported by the piezo-electric element. The holder can be easily produced with high dimensional accuracy. It makes it possible to oscillate the cutter blade at a high frequency.

Abstract: A cartridge for an intraocular lens (L) for use in an injector (I) has an at least approximately plane resting surface (4) for supporting the lens (L) in a partially folded or non-folded state, an arched surface (11) which adjoins the resting surface (4), and a sliding element (3) with which the partially folded or non-folded lens (L) supported on the resting surface (4) can be slid along the arched surface (11) and folded, in particular rolled. By means of this cartridge, an intraocular artificial lens can be brought to the smallest possible format in a simple manner and without damage to the lens.

Abstract: In a process for cutting sections from a probe for microscopic analysis, an ultramicrotome device is used having a blade with a cutting edge, the cutting edge extending at least approximately in a first direction. The process includes the steps of: vibrating the blade in the first direction; and moving the blade relative to the probe to be cut in a second direction, the second direction being perpendicular to the first direction. This eliminates, or at least strongly reduces, compression of the cut sections.

Abstract: A plunger needle (3) for an intraocular lens injector has a plunger tip (4) with a contact area for making contact with a lens (L), the contact area being arranged in a front face (40) of the plunger tip (4), which is curved cylindrically. The plunger needle (3) according to the invention, with its specially configured plunger tip (3), permits reliable guiding of the lens (L) upon injection into an eye and prevents the lens (L) becoming stuck in the injector. It is also easy to produce.

Abstract: A hand-operated injector for inserting a lens into an eye has a grip body (1) with a lens holder (13) for holding a lens, and a plunger (2) arranged displaceably in the grip body (1) for guided insertion of the lens into the eye. An actuating means (5, 6) for displacing the plunger (2) relative to the grip body (1) is arranged on the plunger (2), which actuating means (5, 6) is rotatable relative to the plunger (2). The injector can thus be rotated through any desired angle, without having to substantially change the position of the hand pressing on the plunger (2), in particular the position of the thumb.

Abstract: In a process for cutting sections from a probe for microscopic analysis, an ultramicrotome device is used having a blade with a cutting edge, the cutting edge extending at least approximately in a first direction. The process includes the steps of: vibrating the blade in the first direction; and moving the blade relative to the probe to be cut in a second direction, the second direction being perpendicular to the first direction. This eliminates, or at least strongly reduces, compression of the cut sections.

Abstract: The invention relates to a holder provided with an oscillatory movable ultramicrotome cutter which is arranged on a cutter holder and oscillatory movable by means of a piezo-electric element. Said cutter is supported by the piezo-electric element. The inventive holder can be easily produced with high dimensional accuracy. It makes it possible to oscillate the cutter blade at a high frequency.

Abstract: A device for inserting a lens into an eye has a grip body (1) with a lens holder (13) for holding the lens, and a plunger (2) which can be displaced in the grip body (1) for guided insertion of the lens into the eye. A ball-bearing bush (3) is arranged in the grip body (1), the plunger (2) being mounted so as to be laterally displaceable in this ball-bearing bush (3). This allows the device to be operated using one hand, said device additionally having good slide properties and permitting an at all times guided lateral or rotational movement of the plunger.

Abstract: A cartridge for an intraocular lens (L) for use in an injector (I) has an at least approximately plane resting surface (4) for supporting the lens (L) in a partially folded or non-folded state, an arched surface (11) which adjoins the resting surface (4), and a sliding element (3) with which the partially folded or non-folded lens (L) supported on the resting surface (4) can be slid along the arched surface (11) and folded, in particular rolled. By means of this cartridge, an intraocular artificial lens can be brought to the smallest possible format in a simple manner and without damage to the lens.

Abstract: A hand-operated injector for inserting a lens into an. eye has a grip body (1) with a lens holder (13) for holding a lens, and a plunger (2) arranged displaceably in the grip body (1) for guided insertion of the lens into the eye. An actuating means (5, 6) for displacing the plunger (2) relative to the grip body (1) is arranged on the plunger (2), which actuating means (5, 6) is rotatable relative to the plunger (2). The injector can thus be rotated through any desired angle, without having to substantially change the position of the hand pressing on the plunger (2), in particular the position of the thumb.

Abstract: A device for inserting a lens into an eye has a grip body (1) with a lens holder (13) for holding the lens, and a plunger (2) which can be displaced in the grip body (1) for guided insertion of the lens into the eye. A ball-bearing bush (3) is arranged in the grip body (1), the plunger (2) being mounted so as to be laterally displaceable in this ball-bearing bush (3). This allows the device to be operated using one hand, said device additionally having good slide properties and permitting an at all times guided lateral or rotational movement of the plunger.

Abstract: The knife comprises a block (1) with a front face (3) in which a diamond blade (9) with a frontal surface (10) which is preferably coplanar with the front face (3), is held. The diamond blade (9) has a back surface (11) forming a cutting edge (12) together with the frontal surface (10). A plastic insert (14), preferably of epoxy resin, adjoins the back surface (11) spaced from the cutting edge (12). The insert (14) has a plane upper surface (15) whose plane intersects the frontal surface (10) at an angle of 80.degree. to 87.degree., preferably about 84.degree.. Thereby sectioning and section pick-up under a stereo microscope are facilitated.

Abstract: The microkeratome comprises a holder (10) with a suction ring (11) for attachment to the sclera (12) of a patient's eye (13). A suction source (20) is connected to the ring (11). A slide (30) is displaceably mounted on the holder (10) in a linear guide (22). The slide (30) has a plane frontal surface (31) including a transparent plate (32) for contacting the cornea (70) of the eye (13). The plate (32) has concentric circular marks (34) for centering on the eye (13) and for reading the diameter (D) of contact in an initial position of the slide (30). The slide (30) contains a cutting blade (51) with a cutting edge (52) that is parallel to surface (31) and oscillatable in the direction of the edge (52). Two motors (35, 57) are mounted on the slide (30) for moving the slide (30) and oscillating the blade (51).