Intra-ocular pressure apparatus

Details Intra-ocular pressure apparatus Intra-ocular pressure apparatus

1987-10-14

1990-03-20

Pellegrino, Stephen C.

Surgery

Means for introducing or removing material from body for...

Material introduced into and removed from body through...

604121, 604155, 604246, A61M 100

Patent

active

049097830

ABSTRACT:
An apparatus for maintaining intra-ocular pressure while simultaneously removing and replacing fluid in a patient's eye, for example, during cataract surgery, includes a pair of cooperating expansible bodies connected via fluid conduits to the eye. The expansible bodies may be piston/cylinder assemblies such as syringes. The plungers and/or the barrels of the syringes are mechanically linked together for equal and opposite operation of the two syringes, whereby input and output flow are precisely equal. The syringes are preferably placed back to back along a common axis. The barrels are rigidly spaced and a drive means is applied between the spaced barrels and the endwise-connected plungers.

REFERENCES:
patent: 2625933 (1953-01-01), Salisbury
patent: 2742901 (1956-04-01), Krauthamer
patent: 3491749 (1970-01-01), Gidlund
patent: 3572319 (1971-03-01), Bittner et al.
patent: 3727614 (1973-04-01), Kniazuk
patent: 4457747 (1984-07-01), Tu
patent: 4650461 (1987-03-01), Woods

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