RU2311150C2 - Device for osteosynthesis - Google Patents

Abstract

FIELD: medicine, surgery.

SUBSTANCE: the present innovation deals with osseous osteosynthesis. It contains an osseous plate, hoops and a screw for fixing a hoop. The mentioned screw has got a caput with a groove for a screw driver and is located along the hoop's length. The hoop is designed to be metallic made out of a plate with transverse, inclined grooves and a hoop-fixed case for inserting the hoop's free end at fixing with the help of the mentioned screw; the pace of the thread of the latter is equal to the width of the mentioned groove. Osseous plate is designed to have grooves for applying the hoops. The innovation prevents the repeated operation due to destructing the fixation of osseous fragments due to the chance of the hoops' regulation according to osseous volume and due to excluding the disjuncture of the hoops' fixed ends.

EFFECT: higher efficiency.

3 dwg

Description

The invention relates to surgery, in particular to traumatology, and is intended for bone osteosynthesis.

Currently, there are devices for bone osteosynthesis, representing a different type of plate and screws. These devices are designed to fix fragments of long tubular bones [Sergienko V.I., Petrosyan E.A., Frauchi I.V. Topographic anatomy and surgical surgery: In 2 t. / Under the total. ed. Acad. RAMS Yu.M. Lopukhina. - M .: GEOTAR-MED, 2001. - T.1. - C 352-355].

The disadvantage of these devices is the need to drill through the bones through many places, which is a source of additional trauma, which can cause osteomyelitis, rejection reactions, and fixation of fragments becomes ineffective.

Objective: to offer a device for bone osteosynthesis, devoid of the above disadvantages.

Effect: reducing trauma, improving the quality of treatment for fractures of long tubular bones by using hoops for bone osteosynthesis.

The technical result is achieved by the fact that for bone osteosynthesis for fixing fragments of long tubular bones, a device 1, (Fig. 1), consisting of metal hoops 2 and a metal plate 3, which are placed on the bones after reposition, is used, and the hoops 2 pass through grooves 4 in metal plates 3 (figure 3). The metal hoop 2 (Fig. 2) is a plate with transverse slots 5 having a slope of 10 °, and the length of the slot 5 is equal to half the width of the hoop 2. To fix the hoop 2 on the bone there is a screw 6 located along the length of the hoop 2, the thread pitch of which equal to the width of the slot 5. The slots are located at an equal distance from each other, equal to the width of the slot. The screw 6 is closed on top by a casing 7 mounted on the hoop 2. The head 8 of the screw 6 has a groove 9 for a screwdriver, for screwing. The device is used as follows: a plate 3 is placed on the bone, then the free end of the hoop 2 is inserted through the groove 4, inserted into the casing 7 and secured with a screw 6, scrolling with a screwdriver inserted in the groove 9 of the head 8, until the bone is tightly fixed in the set position after holding repositions. The length of the plate 3 is equal to the required length of fixation. The number of hoops 2 is at least four.

An example of a specific implementation:

plate length - 103 mm

plate width - 16 mm

plate thickness - 6 mm

slot length - 8.5 mm

slot width - 1.0 mm

m / y distance with slots - 16 mm

hoop length - 75 mm

hoop width - 8 mm

hoop thickness - 0.8 mm

slot length - 4 mm

slot width - 1.2 mm

slot tilt angle - 10 °

jumper length - 4 mm

lintel width - 1.2 mm

casing height - 8 mm

casing width at the base - 9.5 mm

casing width at the top - 5.5 mm

casing length - 10 mm

screw length - 16 mm

screw head length - 4.5 mm

screw head diameter - 5.5 mm

metal - titanium alloy

The advantages of the proposed device is that:

- there is a decrease in morbidity due to the lack of the need for drilling bones;

- reduces the time of the operation, because no need to drill bones;

- reduction of morbidity, because do not drill the medullary canal with the length of the tubular bone;

- the number of complications, for example, osteomyelitis, is reduced due to the lack of bone drilling;

- provides reliable retention of bone fragments in a given position;

- there is no need for plaster immobilization after application of this device, because fragments are reliably fixed.

Claims (1)

A device for osteosynthesis, containing a osseous plate and hoops, characterized in that it is equipped with a screw for fixing the hoop, having a head with a groove for a screwdriver and located along the length of the hoop, the latter is made of metal from a plate with transverse, inclined slots and with a casing fixed to the hoop inserting the free end of the hoop with fixing by said screw, and the pitch of the thread of the latter is equal to the width of said slot, the osseous plate is made with grooves for threading the hoops.

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