Punctal anchor for lacrimal stent, introducer tool and method

Details Punctal anchor for lacrimal stent, introducer tool and method Punctal anchor for lacrimal stent, introducer tool and method

2008-05-07

2010-12-07

Zalukaeva, Tatyana (Department: 3761)

Surgery

Devices transferring fluids from within one area of body to...

Reexamination Certificate

active

07846124

ABSTRACT:
A device and method for performing stenting and intubation of the nasolacrimal system to treat for stenosis or obstruction includes a semi-rigid tubular guide sleeve through which a flexible tubular stent, having an oversized length, is inserted from a punctal opening into the nasal cavity. The guide sleeve is removed and a resilient, radially expandable punctal anchor is placed through the punctal opening, to contact the stent and hold it in place. An introducer device having a hollow tubular core and a coaxially mounted, axially translatable outer sheath is provided to facilitate placement of the anchor. The anchor is stretched over the distal end of the core and the stent threaded into the central lumen of the core. Once the anchor is in place, the sheath is translated to push the anchor off the distal end. Excess stent at its proximal end is then trimmed off.

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