RU2266726C2 - Intravitreal filling - Google Patents

Abstract

FIELD: medical engineering.

SUBSTANCE: device has bioinert polymer substrate, ferromagnet. Device has inflatable balloon from transparent flexible material fillable in operation course with transparent ferromagnetic liquid.

EFFECT: reduced risk of postoperative complications; full retina adjacency to vascular tunic and sclera; accelerated operation process.

2 cl, 6 dwg

Description

The invention relates to medicine, namely to ophthalmic surgery, and can be used for surgical treatment of retinal detachment of the intraocular membrane, complicated by tears and tears.

Intravitreal filling is known in the treatment of retinal detachments using a ferromagnetic filling containing a polymer base of bioinert material and ferromagnets (Bulanov DG Ferromagnetic intravitreal filling as a stage of surgical treatment of retinal detachments. Thesis for the degree of candidate of medical sciences, Nizhny Novgorod, 2000, Nizhny Novgorod Medical Academy, pp. 33, 44, 46).

The disadvantages of the famous furromagnetic fillings:

The inconvenience and morbidity of manipulations during the expansion of the exfoliated retina in the area of retinal rupture, as it is carried out using a surgical thread and a retrobulbar inserted magnet; invasiveness, because the seal is a solid item; the limited area of impact of the filling on the detached retina, which does not provide (does not guarantee) the necessary degree of fit to the choroid and sclera.

The technical result of the invention is to reduce the morbidity; simplification of the procedure for pressing the detached retina to the choroid and sclera; ensuring full fit of the retina to the choroid and sclera by exposure to a larger surface exposure; reduction of operation time.

The technical result is achieved by the solution of the proposed intravitreal seal, made in the form of a balloon inflated from a transparent elastic material, with the possibility of filling during the operation with a transparent ferromagnetic fluid. In addition, it is equipped with a syringe pen.

The implementation of intravitreal fillings in the form of a balloon inflated from a transparent elastic material, filled during the operation with a transparent ferromagnetic fluid, provides: simplification of manipulations and the fit of the retina to the choroid and sclera over the entire surface of the choroid; reduction in morbidity, because it (seal) is made of elastic material; reduction of operation time, as there is no need to repeatedly move the seal, as in the prototype.

Figure 1 schematically shows a retinal detachment, an incision; figure 2 is the same, the introduction of a cylinder of a ferromagnetic seal; figure 3 is the same, the cylinder is filled with ferromagnetic fluid; figure 4 is the same, retrobulbar introduction of the magnet and diathermocoagulation on the projection of retinal detachment; figure 5 is the same, the development of choreoretinal adhesions at the site of diathermoacougulation; figure 6 - schematically shows a pen-syringe for filling the balloon with ferromagnetic fluid.

The proposed intravitreal seal 1 is made in the form of a balloon inflated 2 from a transparent elastic bioinert material, filled during the operation with a transparent ferromagnetic fluid 3 using a syringe 4 containing a sleeve 5, a piston 6 with a handle 7, a tip 8 made in the form of an injection needle with a blunt blunt the end 9, having side openings 10 for passing (feeding) the ferromagnetic fluid 3 into the cylinder 2.

Schematic plan to eliminate retinal detachment using the proposed ferromagnetic fillings: Processing of the surgical field and subsequent cantotomy; Blephorastat is inserted; the upper and lower rectus muscles are taken on the stitches-holders; sclera is punctured, a provisional suture is applied to the sclera; a ring is hemmed around the cornea, a fundus lens is applied to visualize the fundus; under visual control, a ferromagnetic filling 1 is inserted into the cavity of the eye under visual control with a syringe pen; make a wide incision of the conjunctiva, make a move with a spatula into the retrobulbar space, insert a magnet 11 on the holder-holder 12 into the incision, apply it to the sclera in the area of the retina rupture; under control of vision, a ferromagnetic fluid is fed into the balloon 2 with a syringe pen, the degree of retinal fit to the choroid is controlled transpupillary; in the projection area of the retinal detachment under the control of vision, using the cryoapplicator 13, the required number of coagulates is applied to form the chorioretinal adhesion and to limit retinal rupture; remove the ferromagnetic seal 1 from the eye and the magnet 11 from the retrobulbar region; remove the fundus lens and ring, suture the conjunctiva; parabulbally administered antibiotics.

The technical result of the invention

Reduced trauma; simplification of the formation of chorioretinal adhesions around retinal rupture; reduction of operation time; the exclusion of the use of organofluorine compounds for intraocular administration in order to straighten the edges of a torn retina.

Claims (2)

1. Intervitreal filling containing a polymer bioinert base, a ferromagnet, characterized in that it is made in the form of a blown balloon of a transparent elastic material with the possibility of filling during the operation with a transparent ferromagnetic fluid. 2. Intervitreal seal according to claim 1, characterized in that it is equipped with a pen-syringe.

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