Cutting instrument for correcting upper eyelid ptosis

FIELD: ophthalmology, in particular, treatment of eyes.

SUBSTANCE: cutting instrument has flat working part with transverse cutting edge and side longitudinal guides protruding beyond cutting edge. Side longitudinal guides are adapted for engagement with forceps for correcting upper eyelid ptosis and are made in the form of thickened flat working part with cantilevered end portions and central shafts. Central shafts are arranged in plane offset relative to surface of flat working part by value at least equal to 1/4 the thickness of one guide. Transverse cutting edge has single-sided sharpening having beveled portion arranged at side of working part surface opposed to surface with offset guides. Such construction provides for improved engagement of working part of cutting instrument with tissues under operation.

EFFECT: increased efficiency of operative intervention owing to engagement with other instruments commonly used for correcting of upper eyelet ptosis.

3 cl, 2 dwg

 

The invention relates to surgical instruments for ophthalmology and can be used in the treatment of eyes.

Known surgical instrument according to the application FR 2569342, And 61 In 17/16, 1986, contains a flat work piece with a transverse cutting edge and protruding beyond the cutting edge console sections.

Console areas known tool is designed to avoid bias at work, and therefore it cannot be used for operations in which the pressure elements of the cutting tool on the fabric is not allowed.

Closer to our invention can be considered to be used for the correction of ptosis tool catalog STORZ INSTRUMENT OMPANY EYE INSTRUMENT"; 10 th Edition, 1969, R, No. 4298, containing a flat work piece with a transverse cutting edge and projecting beyond the cutting edge of the longitudinal side rails.

Cutting tool catalog STORZ INSTRUMENT COMPANY complex in design and has no elements or surfaces for interaction with other tools.

The absence of such elements or surfaces, you can't effectively use it, for example, excision of tissue formed folds orbital conjunctiva and upper tartaglino muscles.

The task to be solved by the invention is the creation of a specialized cutting ant the tool for the correction of ptosis of the upper eyelid.

The technical result of the invention is manifested in improved interaction with the operating tissues of the working part of the cutting tool, and to enhance the effectiveness of surgical intervention due to its interaction with other tools used for the correction of ptosis of the upper eyelid.

The invention consists in that the cutting tool for the correction of ptosis of the upper eyelid, containing a flat work piece with a transverse cutting edge and projecting beyond the cutting edge of the longitudinal side rails, unlike the closest analogue that contains a side longitudinal rails are made to communicate with the tweezers for the correction of ptosis of the upper eyelid, and have the form of thickenings flat working part with a console terminal areas and with the Central axes located in a plane offset from one surface of the working part is not less than1/4the width of a single rail, with a transverse cutting edge has a unilateral sharpening bevel which is located on the side surface of the working part, the opposite surface with an offset guide.

Given a set of essential features sufficient to achieve a technical result, in all cases, to which the requested amount great the OIC protection.

In some cases, of its execution or use of the cutting tool may have a surface side opposite to the surface with an offset guide that protrudes from the side surfaces of the indented guide, the length of the cantilevered end sections constituting 1,0-3,0 mm; grinding angle not exceeding 35 degrees and the width of the work pieces from 2,0-4,0 mm

The invention is illustrated in the drawing, in which figure 1 is given a larger image of the working part of the proposed cutting tool and figure 2 is a view As shown in figure 1.

Cutting tool for correction of ptosis of the upper eyelid contains the working part 1 with a transverse cutting edge 2 and the side longitudinal rails 3. Lateral longitudinal guides 3 are designed to interact with the framework or R-shaped tweezers for correction of ptosis of the upper eyelid. Tweezers are designed for direct interaction with the described cutting tool. Lateral longitudinal guides 3, made in the form of thickenings flat working part 1, have cantilever leaf plots 4 and the Central axis located in a plane that is offset from the flat surface 5 working 1 part by not less than1/4the thickness of one of the guide 3. Transverse cutting edge 2 has unilateral sharpening the bevel 6 which RA is placed from the side surface 7 of the working part 1, the opposite surface 5 with an offset guide 3.

In some cases, of its execution or use of the cutting tool for the correction of ptosis of the upper eyelid may be surface 7 of the working part 1, the opposite surface 5 with an offset guide rails 3, which protrudes from the side surfaces of the indented guide 3. The length of the cantilevered end sections 4 of the longitudinal guides 3 can be 1,0-3,0 mm; grinding angle is in the range of up to 35 degrees; and the width of the working part to have the size from 2.0 to 4.0 mm

In the process of correction of ptosis of the upper eyelid to form a fold orbital conjunctiva to be the upper tarsal muscle and put on one of the above-mentioned tweezers. Then for available on the forceps guide for tissue excision make offer cutting tool. Cantilevered end sections of the longitudinal guides 4 3 provide accurate docking of these instruments. Next one coherent movement or small translational movements of the cutting tool moves medially, to the nasal side of the eyelid, making the cut tissue held cutting edge 2. Because the axis of the longitudinal guides 3, made in the form of thickenings working 1 part by not less than % of the thickness of one of the guide 3, offset from the top of the spine 5, the mutual offset of the cutting tool and tweezers are excluded.

This provides a tight seal surface 5 of the working part 1 to guides tweezers, as the cutting edge 2 has unilateral sharpening bevel which is located on the side surface 7 opposite to the surface 5 adjacent to the tweezers.

L-shaped tweezers for correction of ptosis of the upper eyelid contains two branches with the stopper relative position and with working parts in the form of transverse clamping jaws. Transverse clamping jaws are connected with branches unilateral frontal arcuate bends. Outside of the ends of the branches are interconnected detachable connection. Clamping jaws have outer radial surface under the tarsal plate and opposite from a side branch that is executed in the form of guides under the cutting tool, for the correction of ptosis of the upper eyelid. Clamping jaws provided with protrusions for fixing the tissue with focused across the industry with elongated bases and have the holes for the tabs.

Unilateral frontal arcuate curves have grooves and/or clearance under tool for forming folds orbital conjunctiva and upper tarsal muscle.

Framework tweezers for correction of ptosis of the upper eyelid contains two branches with the stopper relative position and with working parts in the form of pop the river clamping jaws. Outside of the ends of the branches are interconnected detachable connection. Clamping jaws have outer radial surface under the tarsal plate and the opposite from the branch side, made in the form of guides under the cutting tool, for the correction of ptosis of the upper eyelid. Clamping jaws provided with protrusions for fixing the tissue with focused across the industry with elongated bases and have the holes for the tabs. Each branch is connected to the ends of each clamping sponge straight or curved rods with a polygonal or round cross sections. Straight or curved rods have grooves and/or gaps under the instrument for forming the folds of the conjunctiva and upper tarsal muscle.

1. Cutting tool for correction of ptosis of the upper eyelid containing the working part with a transverse cutting edge and projecting beyond the cutting edge of the longitudinal side rails, characterized in that the longitudinal side rails are made to communicate with the tweezers for the correction of ptosis of the upper eyelid and look like thickenings of the working part with a console terminal areas and with the Central axes located in a plane offset from one surface of the working part is not less than 1/4 of the thickness of one of the guide, while the transverse cutting edge has a one-way ZAT is CCW, bevel which is located on the side surface of the working part, the opposite surface with an offset guide.

2. The cutting tool under item 1, characterized in that the surface of the working part, the opposite surface with an offset guide that protrudes from the side surfaces of the indented guide.

3. The cutting tool under item 1 or 2, characterized in that the length of the cantilevered end sections is 1.0-3.0 mm, the grinding angle does not exceed, for example, 35 degrees, and the width of the working part is, for example, from 2.0 to 4.0 mm



 

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