Medical instrument for phacoemulsification
First Claim
1. A medical instrument for phacoemulsification with which the biological tissue of a lens of the eye is ablated by the introduction of energy, the ablated product is sucked out through an incision in the cornea, and the intraocular pressure is maintained by supplying an irrigating liquid, comprising:
- two cannulas for sucking out the ablated lens material and for supplying the irrigating liquid;
at least one device being provided for the introduction of energy through laser radiation;
said two cannulas being enclosed by separate handpieces which are movable relative to one another;
one of said handpieces with the first cannula communicating with a suction device via a feed line;
the other of said handpieces with the second cannula communicating with a supply device for the irrigating liquid via another feed line, and wherein each of the two handpieces and accordingly each of the two cannulas can be connected to the suction device and to the supply device via the feed lines, wherein there is provided in the feed lines between the cannulas and the suction device and supply device a switchable directional valve by which, in a first valve position, the first cannula is connected with the suction device and the second cannula is connected with the supply device and, in a second valve position, the second cannula is connected with the suction device and the first cannula is connected with the supply device, and wherein the first cannula is connected with the directional valve via two feed lines, the second cannula is connected with the directional valve via two other feed lines, and the directional valve is connected with the suction device via a feed line and with the supply device via another feed line, wherein a feed line connected with the first cannula or a feed line connected with the second cannula can be connected to the suction device via a feed line or connected to the supply device via a feed line selectively by the directional valve.
2 Assignments
0 Petitions
Accused Products
Abstract
A medical instrument for phacoemulsification with which the biological tissue of a lens of the eye is comminuted by the introduction of energy, the comminuted product is sucked out through an incision in the cornea, while intraocular pressure is maintained by supplying an irrigating liquid. In an instrument of the type mentioned above, two cannulas are provided for sucking out the ablated lens material and for supplying the irrigating liquid and are connected, via feed lines, with the suction device and with the supply device. A switchable directional valve is provided in the feed lines between the cannulas and the suction device and supply device, by means of which, in a first valve position, a first cannula is connected with the suction device and the second cannula is connected with the supply device and, in a second valve position, the second cannula is connected with the suction device and the first cannula is connected with the supply device.
-
Citations
20 Claims
-
1. A medical instrument for phacoemulsification with which the biological tissue of a lens of the eye is ablated by the introduction of energy, the ablated product is sucked out through an incision in the cornea, and the intraocular pressure is maintained by supplying an irrigating liquid, comprising:
-
two cannulas for sucking out the ablated lens material and for supplying the irrigating liquid;
at least one device being provided for the introduction of energy through laser radiation;
said two cannulas being enclosed by separate handpieces which are movable relative to one another;
one of said handpieces with the first cannula communicating with a suction device via a feed line;
the other of said handpieces with the second cannula communicating with a supply device for the irrigating liquid via another feed line, and wherein each of the two handpieces and accordingly each of the two cannulas can be connected to the suction device and to the supply device via the feed lines, wherein there is provided in the feed lines between the cannulas and the suction device and supply device a switchable directional valve by which, in a first valve position, the first cannula is connected with the suction device and the second cannula is connected with the supply device and, in a second valve position, the second cannula is connected with the suction device and the first cannula is connected with the supply device, and wherein the first cannula is connected with the directional valve via two feed lines, the second cannula is connected with the directional valve via two other feed lines, and the directional valve is connected with the suction device via a feed line and with the supply device via another feed line, wherein a feed line connected with the first cannula or a feed line connected with the second cannula can be connected to the suction device via a feed line or connected to the supply device via a feed line selectively by the directional valve. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
-
Specification