SU915840A1 - Device for osteosynthesis - Google Patents

Description

The invention relates to medical equipment, namely, devices for the treatment of bone fractures.

A device for osteosynthesis is known, which comprises a plate with a slider installed in the groove with the possibility of longitudinal movement, a spring and screws .. [11.

However, the known device has a complex structure that does not warrant the deformation of the spring to increase the stiffness of the connection of fragments. In addition, when using the known device, the smallest particles of the material of the threaded joint of the structure fall into the fracture area, which leads to purulent complications that delay the treatment time.

The purpose of the invention is the elimination of purulent complications and simplifying the design, as well as ensuring the possibility of deforming the spring.

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This goal is achieved by the fact that in the device for osteosynthesis, which contains a plate with a slider installed in the groove with the possibility of longitudinal movement, the spring and shu ^{5 of the} rupa, the spring is made horseshoe with petals of different lengths and is located in the recess of the plate so that the two extreme petals are rigidly connected with plate

⁰ and the middle lobe is rigidly connected to one end of the ram.

In addition, the device is equipped with a lock installed on the plate and in contact with the spring.

¹⁵ FIG. 1 shows an osteosynthesis device, side view in section; in fig. 2 - the same, top view; in fig. 3 “Section A-A in FIG. 2

The device contains a base, made in the form of a shaped plate 1 with a longitudinal through groove 2, in which a slider 3 is mounted for movement, connected

915840

using screws 4 with a cantilever end of a short petal 5 of a horseshoe spring 6. Spring 6 includes two long petals 7, the cantilever ends of which are connected to the base by screws 8. Moreover, the base of the horseshoe spring 6 is fixed in the recess 9 of plate 1. On the longitudinal protrusions 10 of the plate 1 (FIGS 3) a T-shaped clamp 11 is installed with an emphasis 12, cooperating with a spring.

In the plate 1 and the slider 3 holes 13 and 14 are made under the plate fixing screws (not shown).

The device works as follows.

The spring 6 is deformed, while the free end of the spring is led into the recess 9 (Fig. 1). After that, the device is placed on a broken bone and plate 1 is attached to one of the fragments: "at the beginning, the screw is fastened through the extreme hole 14, and then, bending the spring petal 5, to the side, release the second hole 14 and wrap the second screw. Then on the side of the base of the spring 6, a retainer 11 is inserted. The bent petal 5 interacts with the stop 12 in this case and, deformed, lies adjacent to the plate 1 (Fig. 1).

With this position of the spring petals 6, the slider 3 is located at the leftmost point of the groove 2. Then the slider 3 is fixed to the second bone fragment with screws through the holes 13, after which the retainer 11 is removed from the base. Petal 5, trying to take a horseshoe-shaped form, pulls the slider 3 right 07 ~ what ^_ Causes the bone fragments pressed together. Further fragmenting is carried out by the petals 7 of the spring 6 after the release of its free

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the end of the recess 9. The petals 7 of the spring 6, straightening, move the petal 5 to the right, and the latter through the slider 3 tightens the bone fragments between them until it touches each other and keeps them constantly taut.

Thus, in the proposed device there is no screw mechanism for tightening bone fragments, which allows osteosynthesis to be carried out without the danger of purulent complications arising when foreign particles get into the wound. As a result, reliable osteosynthesis is provided, the treatment time is reduced.

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Claims (2)

Claim 1. A device for osteosynthesis, containing a plate with a slide installed in the groove with the possibility of longitudinal movement, a spring and screws, distinguished by the fact that, in order to exclude purulent complications and simplify the design, the spring is made of a horseshoe with petals of different lengths and is located in the recess of the plate in such a way that the two extreme petals are rigidly connected to the plate, and the middle petal is rigidly connected to one end of the slider. 2. Device by π. 1, characterized in that, in order to ensure the possibility of deformation of the spring, it is equipped with a lock installed on the plate and in contact with the spring.