Device for inserting a lens into an eye
View Patent ↗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.
1. A manually operated device for inserting a lens into an eye, said device comprising:
a grip body with a lens holder located at a first end of the grip body for holding the lens,
a plunger with a plunger head serving as a surface for a surgeon's thumb to press on in order to displace the plunger manually in the grip body for guided insertion of the lens into the eye,
a ball-bearing bush arranged in the grip body, said plunger being mounted so as to be longitudinally movable in said ball-bearing bush, said ball-bearing bush being arranged near a second end of the grip body opposite from the lens holder.
2. The device as claimed in claim 1 , wherein the ball-bearing bush is arranged in a fixed position in the grip body.
3. The device as claimed in claim 1 , wherein the plunger having a guide groove into which engages a guide element arranged in the grip body, and the guide element is positioned in the ball-bearing bush.
4. The device as claimed in claim 1 , further comprising:
a protruding finger support arranged on the grip body for supporting a surgeon's fingers during use; and
a front limit stop for the surgeon's fingers arranged on the grip body at a distance spaced from the protruding finger support.
5. The device as claimed in claim 4 , wherein the front limit stop in displaceably arranged on the grip body such that a distance between the protruding finger support and the front limit stop may be changed in accordance with a thickness of the surgeon's fingers.
6. A manually operated device for inserting a lens into an eye, said device comprising:
a grip body with a lens holder located at a first end of the grip body for holding the lens,
a plunger with a plunger head serving as a surface for a surgeon's thumb to press on in order to displace the plunger manually in the grip body for guided insertion of the lens into the eye,
a ball-bearing bush arranged near a second end of the grip body opposite from the first end, the plunger being mounted so as to be longitudinally movable in said ball-bearing bush, said plunger having a guide groove into which engages a guide element arranged in the grip body and wherein the device is springless.
7. The device as claimed in claim 6 , wherein the guide element is positioned in the ball-bearing bush.
8. The device as claimed in claim 6 , wherein the ball-bearing bush is arranged in a fixed position in the grip body.
9. The device as claimed in claim 6 , wherein the guide groove is rectilinear.
10. The device as claimed in claim 6 , wherein the guide groove has a spiral at least in the rear area of the plunger, so that the plunger can be rotated in a guided manner.
11. The device as claimed in claim 10 , wherein the spiral is arranged in the rear area of the plunger.
12. The device as claimed in claim 6 , further comprising:
a protruding finger support arranged on the grip body for supporting a surgeon's fingers; and
a front limit stop for the surgeon's fingers arranged on the grip body at a distance spaced from the protruding finger support.
13. The device as claimed in claim 12 , wherein the front limit stop in displaceably arranged on the grip body such that a distance between the protruding finger support and the front limit stop may be changed in accordance with a thickness of the surgeon's fingers.
14. A device for inserting a lens into an eye, said device having a grip body with a lens holder for holding the lens, and a plunger which can be displaced manually in the grip body for guided insertion of the lens into the eye, wherein a ball-bearing bush is arranged in the grip body, the plunger is mounted so as to be longitudinally movable in this ball-bearing bush, and the plunger has a guide groove into which there engages a guide element arranged in the grip body, wherein the guide groove has a spiral at least in the rear area of the plunger, so that the plunger can be rotated in a guided manner, wherein the grip body has a sleeve and a grip front part connected to the sleeve via axial bearings, and a carrier arranged in the grip front part engages in the guide groove so that the grip front part can be rotated in a guided manner with the plunger.
15. A device for inserting a lens into an eye, said device having a grip body with a lens holder for holding the lens, and a plunger which can be displaced manually in the grip body for guided insertion of the lens into the eye, wherein a ball-bearing bush is arranged in the grip body, the plunger is mounted so as to be longitudinally movable in this ball-bearing bush, and the plunger has a guide groove into which there engages a guide element arranged in the grip body, wherein the guide groove has a spiral at least in the rear area of the plunger, so that the plunger can be rotated in a guided manner, wherein the ball-bearing bush is arranged rotatably in the grip body and can be rotated in a guided manner together with the plunger.