Injector with finger ring
View Patent ↗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.
1. A hand-operated device for inserting a lens into an eye, said device comprising:
a grip body with a lens holder for holding a lens,
a plunger arranged displaceably in the grip body for guided insertion of the lens into the eye, the plunger comprising a plunger rod, and a plunger needle connected to a first end of the plunger rod, and
an actuating means for displacing the plunger relative to the grip body being arranged on the plunger, said actuating means being rotatable relative to the plunger so that a rotation of the grip body results in a rotation of the plunger but not a rotation of the actuating means, said actuating means comprising
a split finger ring having two non-touching ends, and
a plunger head rotatably secured on the second end of the plunger rod, said plunger head comprising a flat cylinder and two openings defined in a circumferential surface of the plunger head diametrically opposite to one another, the two ends of the finger ring being configured so as to be inserted into the two openings.
2. The device as claimed in claim 1 , wherein the finger ring can be secured fixed in position on the plunger head.
3. The device as claimed in claim 1 , wherein the finger ring has a diameter of such a size that it can receive a surgeon's thumb.
4. The device as claimed in claim 1 , wherein the plunger can be displaced longitudinally relative to the grip body but fixed in terms of rotation.
5. The device as claimed in claim 1 , wherein the plunger has a guide groove, and wherein at least one guide element is arranged in the grip body and engages in the guide groove.
6. The device as claimed in claim 1 , wherein the plunger is displaceable in a guided manner in a ball-bearing bush which is arranged in a rotationally fixed manner in the grip body.
7. The device as claimed in claim 1 , further comprising a bush connected to the grip body so as to be rotationally fixed therein.
8. The device as claimed in claim 1 , wherein the plunger rod comprises a threaded bore defined within a second end of the plunger rod, and the device further comprises a locking screw configured to be inserted into the threaded bore of the plunger rod through the central through-opening of the plunger head, to rotatably connect the plunger head to the plunger rod.
9. A hand-operated device for inserting a lens into an eye, said device comprising:
a grip body with a lens holder for holding a lens,
a plunger arranged displaceably in the grip body for guided insertion of the lens into the eye, the plunger comprising a plunger rod, and a plunger needle connected to a first end of the plunger rod, the plunger rod comprising a threaded bore defined within a second end of the plunger rod, and
an actuating means for displacing the plunger relative to the grip body being arranged on the plunger, said actuating means being rotatable relative to the plunger so that a rotation of the grip body results in a rotation of the plunger but not a rotation of the actuating means, said actuating means comprising
a plunger head rotatably secured on the second end of the plunger rod, said plunger head comprising a flat cylinder having a central through-opening defined in a center portion thereof, and
a finger ring secured to said plunger head, and
a locking screw configured to be inserted into the threaded bore of the plunger rod through the central through-opening of the plunger head, to rotatably connect the plunger head to the plunger rod.