RU189020U1 - IRIDO-CAPSULAR RETRACTOR MODIFIED - Google Patents

Abstract

The utility model relates to medicine, more precisely to ophthalmosurgery, and is a device designed to both expand the pupil with insufficient mydriasis, and to support the capsular bag in the capsulorhexis region when the lens undermines due to weakness of the ligamentous apparatus. retractor with the aim of facilitating its manipulation on the structures of the eye, without complicating the construction itself. Technical result - a new design is simple to make and allows the manipulation of the irido-capsular retractor, including the rotary, reliably, atraumatic, providing a quick formulation and removal of the retractor. moving along the handle, and the working part in the form of a hook, while the handle moves at an angle of 150-152 ° to the working part 2.2-2.4 mm long, which is then bent inward at an angle of 25-26 ° and has a length of 2.5 -2,7 m, while the retractor consists of double polyamide fishing line, both ends of which are soldered in the proximal zone, according to the utility model, its handle, its proximal welded end, is inserted into a silicone tube 10 mm long, to a depth of 5 mm; and in the opposite end of the silicone tube also in the tension to a depth of 4-5 mm, with its distal end wound straight cannula.

Description

The utility model relates to medicine, more precisely to ophthalmosurgery, and is a device designed to expand the pupil with insufficient mydriasis, and to support the capsular bag in the capsulorhexis region when the lens undermines due to weakness.

A device for expanding the pupil with simultaneous fixation of the capsular bag (iris capsular retractor), containing a handle with a lock installed with the possibility of reciprocating movement along the handle, and the working part in the form of a hook, the handle goes at an angle of 150-152 ° the working part is 2.2-2.4 mm long, which is then bent inward at an angle of 25-26 °, the length of the bent portion of the working part is 2.5-2.7 mm, while the retractor consists of a double polyamide line (thickness 0, 95-1.05 mm), both ends of the fishing line in proxim Flax soldered zone, and in the distal area of the retractor has a loop shape (Russian utility model patent №138752 - prototype). The described retractor is manufactured at the Experimental Technical Production "Eye Microsurgery" Branch of the FSAI MNTK "MG" them. S.N. Fedorov ”of the Ministry of Health of Russia (Prescurant: No. for the catalog 12-04, Article 1592-01 - Disposable Irido-Capsule-Polymer).

However, the described construction of an irido-capsular retractor does not fully suit ophthalmosurgeons, even with a long history of work. The reason is the difficulty of manipulating the retractor on the structures of the eye during its installation. This is due to the design features of the tool: the retractor consists of a double polyamide fishing line, with the curved section of the working part of the retractor 2.5-2.7 mm long enough, and with rotational movements, during the installation of the retractor (set using one or two tweezers), It is possible to twist these two parts, which makes manipulations less predictable, hence traumatic.

The task of the utility model is to modify the design of the irido-capsular retractor in order to facilitate its manipulation on the structures of the eye, without complicating the design itself.

The technical result is a new design that is easy to manufacture and allows the manipulation of the irido-capsular retractor, including rotary ones, reliably, atraumatic, providing quick setting and removal of the retractor.

This technical result can be obtained if the irido-capsular retractor, containing a handle with a lock installed with the possibility of reciprocating movement along the handle, and the working part in the form of a hook, while the handle passes at an angle of 150-152 ° in the working part 2 , 2-2.4 mm, which is then bent inward at an angle of 25-26 ° and has a length of 2.5-2.7 mm, while the retractor consists of a double polyamide fishing line, both ends of which are soldered in the proximal zone, according to the utility model his grip, his proximal junction nym end wound into a silicone tube having a length of 10 mm, a depth of 5 mm, wound in tension and in the opposite end of the silicone tube as a tension at a depth of 4-5 mm, with its distal end wound straight cannula.

Among the essential features that characterize the utility model, the distinctive features are:

- the handle with its proximal welded end is wound up in a silicone tube, which length is 10 mm, to a depth of 5 mm, and it is wound up in the tension;

- in the opposite end of the silicone tube, a straight cannula is also inserted into its tension at a depth of 4-5 mm with its distal end.

Between the set of essential features and achievable technical result there is a causal relationship.

Of the three components created easy-to-use tool-retractor. In order to combine and manage the three parts, it is important to choose the right material. That silicone tube allows you to do this. The material of the tube is silicone. It allows the retractor handle with its proximal welded end to the depth of 5 mm to be inserted into the tube from one end. Moreover, it can be inserted into the tensioner, and from the opposite end of the silicone tube also into the tensioner to a depth of 4-5mm . The design is easily assembled (the parts are fixed in tension) and the silicone tube serves as an elastic buffer that allows the cannula and the working part of the retractor to be in different planes during manipulations by bending the silicone tube, which ensures atraumatic and accurate setting of the retractor in different sectors. Even when you put a 5 mm cannula on one side into a 10 mm silicone tube and a 5 mm hand grip on the other side, it doesn’t matter that when the surgeon needs it, he will act through a straight cannula and flex the silicone tube (bending will be in the middle ) for atraumatic hit of the working part of the retractor in the desired area.

The proposed device is presented in the sketch, where pos. 1 - cannula straight; pos. 2

- Silicone tube 10 mm long, pos. 3 - retractor handle; pos. 4 - lock that can move along the handle; pos. 5 - the working part of the retractor, adjacent to the handle at an angle a; pos. 6 - curved section of the working part.

The device works as follows. The assembly is carried out before use: a straight cannula - 25G is inserted into a silicone tube 10 mm long and 0.35 mm inner diameter to a depth of 4-5 mm (we use a piece of silicone tube from the Barron cornea vacuum die cutter). The retractor handle with its proximal welded end, consisting of a double polyamide fishing line with a thickness of 0.95-1.05 mm, is inserted into the opposite end of the silicone tube to a depth of 5 mm. Institution in the silicone tube are performed in the tension. Then, through the corneal paracentesis, areas of the working part of the device (pos. 5 and pos. 6) are brought into the anterior chamber of the eye, then with the curved part of the working part (pos. 6), the pupil is expanded with a simultaneous capture of the anterior capsule edge in 4) move down the handle (pos. 3) and fixed in the area of the corneal paracentesis, thus ensuring the maintenance of mydriasis and the stability of the capsular bag during the entire surgical procedure. The silicone tube together with the cannula is removed from the handle of the retractor for the duration of the operation, and at the end of the operation it is put back on the handle and atraumaticly removes the working part of the retractor from the eye cavity.

Today, in the Yekaterinburg center of the IRTC “Eye Microsurgery”, the modified irido-capsular retractor is regularly used during the performance of complicated cataract operations (breakage of the fibers of the cynic ligament), as well as in case of insufficient mydriasis.

Claims (1)

Irido-capsular retractor, containing a handle with a lock installed with the possibility of reciprocating movement along the handle, and the working part in the form of a hook, while the handle moves at an angle of 150-152 ° to the working part 2.2-2.4 mm long, which is then bent inward at an angle of 25-26 °, and the curved section of the working part has a length of 2.5-2.7 mm, while the retractor consists of a double polyamide fishing line, both ends of which are soldered in the proximal zone, characterized in that the handle proximal welded end wound in silicone new tube, wherein the length of 10 mm, a depth of 5 mm, wound in tension and in the opposite end of the silicone tube as a tension at a depth of 4-5 mm with its distal end wound straight cannula.

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