SU1324661A1 - Compression device for osteosynthesis - Google Patents

Abstract

The invention relates to medical technology. The purpose of the invention is to provide a space for reposition and fixation of an isolated bone fragment. The device is made in the form of a trough-shaped plate 1 with holes 2 and 3 for screws for attachment to bone fragments. Around the holes 2 and 3 are threaded holes for the stop screws 6-13. On the plate 1 there is a window 16 with steps 17 and 18 on which the inner plate 21 rests. Between the window 16 and the hole 3 there is a groove 22. The device allows to reduce the invasiveness and shorten the rehabilitation period, 4 Il. (L

Description

The invention relates to medical technology, namely to traumatology and orthopedics.

The purpose of the invention is to provide spatial reposition and fixation of an isolated bone fragment.

Fig. 1 shows a compression device in a perspective view of Fig. 2, an inner plate associated with an isolated bone fragment; FIG. 3 is a section A-A in FIG. 15 in FIG. 4, the structure of a stop screw.

The compression osteosynthesis device is made in the form of an outer gutter-like plate 1 with holes 2 and 3 for screws 4 and 5 in dp attached to bone fragments. Around the holes 2 and 3 are respectively threaded holes for the stop screws 6-9 and 10-13,

Each stop screw 6-13 (using the example of screw 7) is made in the form of a threaded pin with slot 14 for a screwdriver on one side and a tapered end 15 on the other.

On the outer grooved plate 1 below the hole 2 there is a square-shaped window 16 with steps 17 and 18, on which the inner plate 21 is supported by the same steps 19 and 20. Between the window 16 and the hole 3 there is a longitudinal compression groove 22.

The inner plate 21 in the middle has a threaded hole for the screw 23, on the protrusions the end of which is screwed onto the handle 24.

On both sides of the hole — under the screw 23, there are two threaded bolts 25 and 26 from a mile under fixation.

Each locking screw 25 and 26 (for example, screw 25) is made in the form of a threaded rod with a transverse hole 27 for a gate (not shown) on one side and a tapered threaded end 28 on the other.

To fix the inner plate 21 in the window 16 of the outer plate 1, a jumper 29 is used, worn with its central hole on the end of the screw 23 under the Nut 30.

The device is applied as follows.

Pa is an area of complex fracture with} the presence of isolated bone

24G612

the fragment 31 over the soft tissues impose the inner plate 21 with the previously unscrewed fixing screws 25 and 26. Through the hole 5 of which the screws 25 and 26 are turned out, through holes in the soft tissue 31 holes for tapered threaded ends 28 are drilled screws 25 and 26. Screw the screws 25 and 26 up to the center into their holes in the plate 21, put it on the area of the bone fragment 31 and alternately screw the conical ends of 28 screws 25 and 26 into the previously drilled

5 holes in fragment 31.

Thus fixing the bone fragment 31 on the screws 25 and 26, the screws themselves are fixed on the plate with 21 lock nuts (not shown), rolled onto their outer ends,

Screwing the handle 24 onto the protruding end of the screw 23, replicate the bone fragment 31 relative to the extreme fragments 32 and 33.

5 Through the hole 2 of the plate 1

through the puncture in soft tissues, a hole is drilled in the bone fragment 32 under the screw 4 and screwed it in so that the head does not reach the outer plate 1 and does not press it.

Successively screw in the holes 6–9 in their holes so that their conical ends 15 penetrate soft tissue through soft tissues.

35 layer of bone fragment 32, slightly raised to plate 1 until it stops in the screw head 4. Screws of consecutive screwing of screws 6 - 9 and screw 4 are correctly and firmly fixed

40 plate 1 on the bone fragment 32.

The bone fragment 33 is repositioned. A screw 34 is 4/5 of its length inserted into the bone fragment 45 through the lower part of the compression groove 22. By hooking the clamp (not shown) onto the upper end of plate 1 and attaching the screw 34, the bone fragments 32 and 33 are tightened, until the required

5Q compression of M6ZhDU with them and a fragment 31. Plate 1 is fixed on the bone fragment 33 with a screw 5 screwed through hole 3, as well as with stop screws 10-13, like screws 6-9,

Remove the clamp, turn the screw 34, unscrew the handle 24 from the screw 23, put the jumper 29 on it and firmly fix the plate 21

with a bone fragment 31 on the plate 1 with a nut 30.

After consolidation, the device is removed in reverse order.

The use of the device allows to reduce the operating trauma and reduce the time of rehabilitation.

Claims (1)

Invention Formula Compression device for osteosynthesis, containing external gel, is a bean plate with screws and ca. An internal plate in which it is in contact with its inner surface, characterized in that, in order to ensure spatial reposition and fixation of the isolated bone fragment, stop screws are installed in the outer runner plate, and fixing screws, a handle with a nut are installed on the inner plate and a jumper in contact with the outer surface of the outer grooved plate. FIG. 2 33 -L Fig.Z Fiel