UA66640A - Compression plate for treating bone fractures - Google Patents

Abstract

The compression plate for treating bone fractures contains the extensible housing comprising movable and non-movable plates interconnected telescopically and the compressing device. The housing is equipped with movable and non-movable cross-pieces with the pressure bolts and the figured flat spring disposed at the same plane with the plates.

Description

Description of the invention

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

Known compression plates for osteosynthesis with holes for screws, see fig. 1t1a, page 36, "Osteosynthesis" sub. ed. S.S. Tkachenko. kind. Medicine. Leningrad. 1987

Disadvantage - there is little possibility of compression of bones and they are complex in technological execution, and therefore removable devices are more often used for compression of fragments (contractors) page 35 of the same textbook.

A known plate for the treatment of bone fractures, holding a sliding body, in the form of movable and 70 fixed plates, telescopically connected to each other and a device for pressing them together, located on the plate in the form of two right-angled springs, a rod and a piston. see A. Os. 400317 USSR. This is a prototype.

The disadvantage is large dimensions in terms of height and length.

The second disadvantage is due to the presence of a threaded bolt and nut and the placement of springs on the plate, which causes injury to soft tissues. 12 The purpose of the invention is to reduce the dimensions and reduce injury to soft tissues and create reliable permanent compression.

This is achieved by the fact that the body is equipped with movable and immovable traverses with pressure bolts and a shaped flat spring placed in the same plane as the plates.

The essence of the invention is explained by drawings: Fig. 1 shows a compression plate, Fig. 2 - a section along

А.А fig. 1, fig. 3 - a section along B-B fig. 1, fig. 4 shows the springs: a - plate spring, b - plate spring with a shank, c - shaped double action spring, d - plate spring and d - a convex spring, Fig. 5 shows the base plate of the movable traverse, Fig. b shows a removable cracker, Fig. 7 shows the attachment of a smooth plate spring, Fig. 8 shows a cross-section along the C-S of Fig. 7, Fig. 9 shows and a pressure bolt with a round head with holes and in Fig. 10 - the second option.

The compression plate consists of a fixed plate 1 and a movable 2, telescopically connected to each other, with "guides, in the form of a dovetail Z, a fixed traverse 4 with pressure bolts 5, a movable traverse 6 and a shaped flat spring 7, for example: dish-shaped, fixed on the end of the movable plate 2.

Figure 5 shows a plate without a movable traverse, it is equipped with curly springs with a large compression amplitude. at

Fig. 4a shows a spring in the form of two common plate springs 8, Fig. 46 shows a plate spring "Its 7 with a shank for fixing It, Fig. 4c shows a double-action spring 9, which works due to the gaps between the protrusions 10, and when combining them as a plate, in Fig. 4g - a smooth plate spring 11 and in Fig. 4d, a convex spring 12 is shown. Ge)

The plate in Fig. 5 can be equipped with two plate springs 13, fixed on the movable 2 and 3 and fixed 4 traverses. eh

A smooth plate spring 11 can be easily made in locksmith shops and fixed with a clamp 14 in Fig. 7.

To move the plates 1 and 2 apart, a removable eccentric key 15 is used, which is installed in the slot made on the fixed plate 1, or holes 16 and 17 are made for moving the plates by contractors. "

To maintain the gap between the plates, there are cracker (removable) of 18 different sizes. With 50 devices in use. After installing the bone fragments, a compression plate is applied and fixed plate 1 is fixed by inserting screws into the brush through holes 19 in the plate, then for

In order to ensure the compression of bone fragments, we insert the key 15 into the socket and by turning the key we move the plate 2 away from the plate 1, we insert the removable cracker 18 into the resulting gap and then fix the movable plate 2 with screws, after which we remove the cracker and remove the key 15 by turning the key.

Cracker 18 can be inserted into the plate before installing it. b After that, we move the moving traverse 6 with the help of bolts 5, turning with a hex key, which

Ge") compresses the spring 7 and moves the plate 2 to the plate 1, creating a compression squeeze. Bolts 5 can create the necessary compression, and spring 7 guarantees constant pressure throughout the entire period of callus formation. There are no protruding parts in the plate, both in length and in height, which helps to eliminate the possibility of injury to soft tissues.

The height of the plates is made from 3.5 mm to 4.5 mm, as the existing plates, see page 39 of the same textbook. c In Fig. 9-10, a pressure bolt 5 with a round head 20 is shown, which has two through holes 21 on one axis, and in Fig. 10 - holes 22 have two offset axes.

This design allows you to reduce the thickness of the plate and will simplify the rotation of the bolt with the help of 29 cylindrical pin 23 (removable). in. The plate in Fig. 5 is adjusted to the fragments of the limbs in the same way as in the first plate, and the spring is selected with a constant compression force.

The goal is to reduce dimensions, which is achieved due to flat shaped springs and thanks to the location of the springs in the plane of the plate. 60 The goal is to create a reliable constant compression, which is achieved due to a movable traverse.

Claims (1)

The formula of the invention is a Compression plate for the treatment of bone fractures, which contains a sliding body in the form of movable and immovable plates, telescopically connected to each other, and a device for pressing them together, which differs in that the body is equipped with movable and immovable traverses with pressure bolts and a shaped flat spring placed in the same plane as the plates. " (av) "And (Se) (Se) (Se) - with . a (e)) (e)) (e)) t" "2 because b5