SU1634259A1 - Appliance for establishing a canal in bone tissue - Google Patents

Abstract

The invention relates to medicine, namely to traumatology and orthopedics, and is intended to guide a canal in the tibia during the anatomical repair of an injured cruciate ligament. The device comprises a bracket 1 and an emphasis fixed on one end, and on the other a tubular body 2 connected to a coaxial guide sleeve 3 by means of a metered movement mechanism 7 and a stopper 8. The stop is made in the form of two pointed projections 4 and 5 parallel to each other the ends of which are placed in a plane passing through the axis of the sleeve 3, the distance of the protrusions being 3-6 microns. The sleeve 3 is made at the working end of the conical with a beveled toothed edge 6. The projections 4 and 5 are placed in the anatomical point of attachment a different link (anterior or posterior) on the tibia, and a jagged edge of the sleeve 3 on its lateral surface (internal or external). The sleeve 3, by means of the metered movement mechanism 7, extends towards the projections 4 and 5 and is fixed by the stopper 8 on the bone. A piercing tool is inserted through the sleeve 3, the top of which coincides with the selected anatomical point of attachment of the cruciate ligament. 1 z.p, f-ly, 4 ill. with S (L

Description

This invention relates to medicine, namely to traumatology and orthopedics.

The purpose of the invention is to improve the accuracy of the canals of tibial claws.

FIG. 1 shows the device, a general view; FIG. 2 - the same, in the working position, - in FIG. 3 is a section A-A in FIG. in fig. 4 - section bb in fig.§.

The device contains a bracket 1 and an emphasis fixed on one of its ends,

and on the other tubular body 2 with co. an axial guide sleeve 3. The stop is made in the form of two parallel protrusions 4 and 5 parallel to each other, the sharp ends of which are placed in a plane passing through the axis of the sleeve 3, the distance between the projections being 3-6 mm. The sleeve 3 is made at the working end with a tapered bevel with a beveled toothed edge 6. The housing 2 is connected with the sleeve 3 by means of a metered movement mechanism 7, for example a rack-and-pinion gear

the transmission (fig. A) and the stopper 8, for example in the form of a shaft with an eccentric axis of rotation (FIG. 3).

The device is installed after the operational access to the articular surfaces of the knee joint in the flexion position at an angle of 90-60 ° (Fig. 2). In this case, the pointed protrusions 4, 5 of the bracket 1 are placed at the anatomical point of attachment of the cruciate ligament (anterior or posterior) on the tibia, and the toothed edge 6 of the sleeve 3 is on its lateral surface (inner or outer). . The sleeve 3 with the serrated edge 6 extends towards the protrusions 4 and 5, compresses the bone, smashes into it, is fixed by the stopper 8, which contributes to the immovability of the spaced device.

A piercing tool is inserted through the opening of the sleeve 3, through which a channel is made into the bone, the apex of which coincides with the selected anatomical point of attachment of the cruciate ligament.

Next, the device is removed, the completed channel is enlarged by tools to the required diameter. Through a channel using a loop (hook), the tie material is held. The subsequent steps of the operation are carried out according to the procedure.

The device allows

exact channeling required

3

50

five

about

five

To anatomically restore the damaged cruciate ligament, to create a reliable fixation of the device on the tibia at the time of passage of the channel through it, to avoid the possibility of inaccurate direction of the channel. The use of the device speeds up and simplifies the operation, especially for a beginning or specializing surgeon.

Claims (2)

1. A device for conducting a channel in the bone, containing a bracket and an emphasis fixed on one end, and on the other - a tubular body with a coaxial guide sleeve, having a possibility of movement, casting so that, in order to improve the accuracy of the channel in the infill bone, the emphasis is made in the form of two pointed protrusions parallel to each other, the sharp ends of which are placed in a plane passing through the axis of the sleeve, the latter is made conical with a bevel gear edge on the working end, and the housing is connected to the sleeve by means of a metered movement mechanism and a stopper. 2. A device according to claim 1, characterized in that the distance between the protrusions is 3-6 mm. b, s A-A covered ttsh Fig.Z hr 1 J. Y7 // W //////////////////////////; /. J