Patient interface device for ophthalmic laser procedures
A patient interface device for use with a laser surgery apparatus, the device including an upper assembly and a lower assembly attached to the upper assembly. The device including a spherical-like object that engages the lower assembly so that an enclosed volume is defined between the spherical-like object, the lower assembly and the upper assembly, wherein a first liquid substantially fills the enclosed volume. The device further including a channel that contains a second fluid that is exposed to ambient atmosphere.
1 . A patient interface device for use with a laser surgery apparatus, the device comprising:
a) an upper assembly and a lower assembly;
b) the upper assembly configured to be directly attached to a laser surgery device; the upper assembly comprising a ring for directly engaging the lower assembly; the upper assembly comprising a lever; wherein the ring is configured to clampingly attach to the lower assembly upon a rotation of the lever;
c) the lower assembly comprising a handle for positioning the lower assembly on an eye, wherein the handle is configured so that it does not directly attach to the laser surgery device, and an annular platform and a conical shaped wall at an outer side of the annular platform, the platform and the wall configured for receiving the upper assembly, and a suction ring for engaging the eye; and,
d) the suction ring comprising a suction ring wall having an inner surface, and wherein the suction ring wall defines in cross section an inverted J-shape.
2 . The patient interface device of claim 1 , wherein the upper assembly comprises a plate, and wherein the plate is engaged with the ring.
3 . The patient interface device of claim 1 , wherein the ring defines an outer surface for engagement with the conical shaped wall of the lower assembly.
4 . The patient interface device of claim 1 , wherein the upper assembly comprises a plate, and wherein the plate has a central portion configured for direct engagement against the eye, whereby the plate has a radially outward portion configured to not directly contact the eye, when the upper assembly is engaged with the lower assembly and the lower assembly is configured to engage with the eye.
5 . The patient interface device of claim 1 , wherein the upper assembly comprises a locking arm mechanism, for engaging and locking the upper assembly to the laser surgery device.
6 . The patient interface device of claim 1 , wherein the upper and lower assemblies are engaged.
7 . The patient interface device of claim 6 , wherein the device is configured to engage against the eye.
8 . The patient interface device of claim 1 , wherein the suction ring has a skirt.
9 . The patient interface device of claim 8 , wherein the skirt is integrally attached to the suction ring wall.
10 . The patient interface device of claim 1 , wherein the device further comprises a port, wherein the port is configured to provide a fluid.
11 . The patient interface device of claim 10 , wherein the device further comprises a second port, wherein the second port is configured to provide a vacuum.
12 . The patient interface device of claim 1 , wherein the device further comprises a port, wherein the port is configured to provide a vacuum.