METHOD FOR CORRECTING PTOSIS OF THE UPPER EYELID AND A KIT OF SURGICAL INSTRUMENTS FOR CORRECTING PTOSIS OF THE UPPER EYELID Russian patent published in 2005 - IPC

FIELD: medicine, medicinal equipment, ocular surgery.

SUBSTANCE: the present innovation deals with resection of the upper tarsal muscle, then through anterior third of tarsal plate of the upper eyelid, along the center of the upper eyelid, at 1.5-4 mm against its free edge one should apply a retaining suture. Then the upper eyelid should be reversed to open orbital conjunctiva and fornix conjunctiva. One should perform a single instillation of a substance that causes contraction of the upper tarsal muscle and retraction of the upper eyelid. Then with the help of the kit of surgical instruments it is necessary to form a conjunctival and the upper tarsal muscular fold to perform suture-free demarcation of this fold and tissue resection. Tissue clamping instrument is designed as a plate-and-frame pincers to correct the ptosis of the upper eyelid or as a G-shaped pincers for the same purpose that contains two branches with a stopper of mutual position and with working parts in the form of cross-sectional clamping sponges connected with branches with unilateral edge arch-like curvatures. Nonworking ends of branches are mutually connected with detachable linkage. Clamping sponges has external radial surfaces for tarsal plate at the side opposite to branches. Radial surface area is designed as guides for a cutting instrument to correct the ptosis of the upper eyelid. Clamping sponges are supplied with protrusions to fix tissues with prolonged foundations oriented cross-sectionally against the branches and have got foramens for these protrusions. Unilateral edge arch-like curvatures are grooved and/or fluted for the instrument to form conjunctival fold and that of the upper tarsal muscle. The instrument has got a handle with an edge rod supplied with an arch-like working segment on it. The latter is oriented at an angle against longitudinal axis of the handle. The rod is curved at an obtuse angle and has the length similar to distal part against the handle that corresponds to not less than one third against a chord of an arch-like working segment designed as a curved deformed plate. Plate's curvature corresponds to that of tarsal plate being located in the plane of the rod's curvature. The working segment has cutting edges on narrow sides and on the rod-opposite edge. The cutting instrument contains a working segment with cross-sectional cutting edge and with protruding lateral longitudinal guides designed to interact with either plate-and frame or G-shaped pincers and has the shape of thickened working segment with cantilevered terminal parts and with central axes. Central axes are located in the plane being shifted against the surface of the working segment by not less than one fourth against the thickness of one guide. Cross-sectional cutting edge has unilateral sharpening the slope of which is from the side of the surface of the working segment being opposite to the surface with shifted guides. Plate-and-frame pincers contains two branches with a stopper of mutual position and with working segments as cross-sectional clamping sponges supplied with protrusions for tissue fixations and foramens for these protrusions. Each branch is connected with the edge of every clamping sponge with either straight or curved rods with multiangular or rounded cross-sectional sections. Straight or curved rods are grooved and/or fluted for the instrument to form conjunctival fold and that of the upper tarsal muscle. The method enables to improve therapeutic results due to applying specially designed instruments of improved contact with ocular tissues that, finally, simplifies the work of a surgeon.

EFFECT: higher efficiency of correction.

8 cl, 13 dwg, 1 ex