Device for irrigation and illumination of the posterior segment of the eye

Abstract

The invention relates to medicine, specifically ophthalmology, and can be used for irrigation and illumination of the posterior segment of the eye. The device comprises an irrigation tube with a cannula having a tip, and a fiber-optic light guide (FOL) extending through the cavity of the irrigation tube and extending its distal end outward through the tip. An input opening is formed in the wall of the irrigation tube, allowing the FOL to be inserted into the FOL. The edges of the input opening are configured to seal against the FOL during its insertion, withdrawal, and insertion stop, when the FOL's distal end extends outward through the tip, and the proximal end remains in the input opening. The invention enables adjustment of the illumination of the surgical site. 2 fig.

Description

[0001] The utility model relates to medicine, namely to ophthalmological microsurgical instruments, and can be used for irrigation and illumination of the posterior segment of the eye.

[0002] The closest analogue of the claimed utility model is a device for irrigation and illumination of the posterior segment of the eye - an infusion chandelier with illumination (standard illuminated infusion chandelier) from the Synergetics line of the company Bausch + Lomb (USA). The device includes an irrigation tube with a cannula having a tip, and a fiber optic light guide (FOL), passing through the cavity of the irrigation tube and exiting with the distal end outward through the tip (see Section 13 "Endoilluminators and chandeliers" of the catalog "Bausch + Lomb Retina Catalog", presented in the appendix to the description). The disadvantage of this device is the impossibility of adjusting the illumination of the operating area during surgical treatment, since its design does not allow changing the length of the distal end of the FOL, exiting outward through the tip, in order to approach (remove) the distal end of the FOL to (from) the operating area.

[0003] The technical problem that the claimed utility model is aimed at solving is the creation of a device for irrigation and illumination of the posterior segment of the eye, the design of which allows changing the length of the distal end of the IOS, which extends outward through the tip.

[0004] The technical result achieved by the claimed utility model consists in the ability to regulate the illumination of the operation area.

[0005] In order to achieve the specified technical result in the claimed device for irrigation and illumination of the posterior segment of the eye, including an irrigation tube with a cannula having a tip, and an IOS passing in the cavity of the irrigation tube and exiting with the distal end outward through the tip, an input hole is made in the wall of the irrigation tube with the possibility of inserting the distal end of the IOS into it, wherein the edges of the input hole are made with the possibility of hermetically sealed adhesion to the IOS during its insertion, removal and stopping of the insertion, when the distal end of the IOS comes outward through the tip, and the proximal end remains in the specified input hole.

[0006] The ability to insert the distal end of the IOS into an input hole made in the wall of the irrigation tube, the edges of which are designed to be hermetically sealed against the IOS during its insertion, removal, and stopping of the insertion, when the distal end of the IOS comes out through the tip, and the proximal end remains in the said input hole, makes it possible to adjust the illumination of the surgical area by changing the length of the distal end of the IOS in order to bring it closer to the surgical area or move away from it.

[0007] The utility model is explained by images. Fig. 1 shows a device with an installed IOS, Fig. 2 shows a device with a removed IOS, where 1 is an irrigation tube (not shown in full), 2 is a cannula, 3 is a tip, 4 is an IOS (not shown in full), 5 is the distal end of the IOS, 6 is the wall of the irrigation tube, 7 is the proximal end of the IOS (not shown in full).

[0008] The device for irrigating and illuminating the posterior segment of the eye (Fig. 1) includes an irrigation tube 1 with a cannula 2 having a tip 3 and an IOS 4 passing through the cavity of the irrigation tube 1 and exiting with its distal end 5 outward through the tip 3. In the wall 6 of the irrigation tube 1, an input hole is made with the possibility of inserting the distal end 5 of the IOS 4 into it. The edges of the input hole are designed with the possibility of hermetically sealed adhesion to the IOS 4 during its insertion, removal and stopping of the insertion, when the distal end 5 of the IOS 4 comes outward through the tip 3, and the proximal end 7 remains in the said input hole. Irrigation tube 1 is made of medical silicone, cannula 2 with tip 3 is made of medical steel, the input hole is made in wall 6 of irrigation tube 1 using scissors.

[0009] Surgical treatment of posterior segment diseases, such as severe forms of proliferative vitreoretinopathy, giant retinal tears and detachments, complicated forms of proliferative diabetic retinopathy, epiretinal fibrosis with a pronounced traction component, and severe penetrating eye injuries with the presence of foreign bodies, primarily involves the first stage of a three-port vitrectomy. During this procedure, an infusion port for the inventive device and two working ports for microsurgical instruments are installed 3.5-4 mm from the limbus in the pars plana of the ciliary body. The presence of two ports for microsurgical instruments allows for monomonial (one-handed) or bimonial (two-handed) surgical treatment. Bimanual surgical treatment methods are mainly used in severe forms of proliferative vitreoretinopathy, complicated forms of proliferative diabetic retinopathy and in severe penetrating eye injuries with the presence of foreign bodies.

[0010] The claimed device for irrigation and illumination of the posterior segment of the eye is used as follows. Before the start of surgical treatment, the device is connected to a multifunctional vitreoretinal system, such as a system

[0011] Constellation Vision System (Alcon, USA). The proximal end of the irrigation tube 1 is connected to the irrigation line of the vitreorheic system. The proximal end 7 of the VOS 4 is connected to the light source of the vitreorheic system and its serviceability is checked. If the VOS 4 is faulty, the proximal end 7 is forcibly pulled out through the entry hole made in the wall 6 of the irrigation tube 1 by the proximal end 7 (Fig. 1). The claimed device with the VOS 4 removed from it is shown in Fig. 2. After this, the serviceable VOS 4 is forcibly inserted into the entry hole with the distal end 5. The entry of the VOS 4 is complete when its distal end 5 comes out through the tip 3, and its proximal end 7 remains in the entry hole. After the tip 3 of the cannula 2 is inserted into the infusion port, the light source and the irrigation line of the vitreoretinal system are turned on, providing a continuous supply of balanced salt solution (BSS) through the irrigation tube 1 to the surgical area.In the BSS environment, surgical treatment is performed, during which the brightness of the illumination of the surgical area is adjusted, if necessary, by changing the length of the distal end 5 of the BOS 4 in order to bring it closer to the surgical area or further from it. To increase the length of the distal end 5, the surgeon, holding the proximal end 7, forcibly inserts the BOS 4 into the entry hole by the length of the extension of the distal end 5. To decrease the length of the distal end 5, the surgeon, holding the proximal end 7, forcibly removes the BOS 4 from the entry hole by the length of the shortening of the distal end 5. The need to apply force when replacing a faulty BOS 4 and when changing the length of the distal end 5 of the BOS 4 is due to the fact that the edges of the entry hole are designed to seal against the BOS 4 during its insertion, removal, and stopping of the insertion.After completion of the operation, the claimed device for irrigation and illumination of the posterior segment of the eye is removed from the infusion port, and the microsurgical instruments are removed from the working ports.

Claims

A device for irrigating and illuminating the posterior segment of the eye, comprising an irrigation tube with a cannula having a tip, and a fiber-optic light guide (FOL) passing through the cavity of the irrigation tube and exiting with its distal end outward through the tip, characterized in that an input opening is made in the wall of the irrigation tube with the possibility of inserting the distal end of the FOL into it, wherein the edges of the input opening are made with the possibility of hermetically sealed adhesion to the FOL during its insertion, removal, and stopping of insertion, when the distal end of the FOL exits outward through the tip, and the proximal end remains in said input opening.

Images