SU1653746A1 - Device for executing perosseous osteosynthesis - Google Patents

Description

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(21) 4711799/14 (22) 06.27.89 (46) 07.06.91. Bul №21

(71) Zaporozhye regional health department and Zaporozhye titanium-materi combine them. The 60th Anniversary of the Great Oct. Brno Socialist Revolution

(72) E.V. Pisareva, S.V. Artemyeva and T.A. Semenova

(53) 615.475.616.71-001.5-089.84 (088.8) (56) Auto-sale certificate of the USSR

G 1502021, class A 61 B 17/58. 1987

(54) DEVICE FOR INTERFACE OSTEOSYNTHESIS

(57) The invention relates to medical technology and is intended to maintain the rigidity of the fixation of bone fragments. A pointed rod 1 with rings 7 mounted on it with trapezoidal axial section and spring washers 8 arranged between them is inserted into bone fragments 12 and 13 until the contact platform 3 contacts bone. From the side of the tip 5 on the threaded end 4 of the rod 1, the sleeve 9 is screwed in. As a result, the washers 8 increase in diameter, ensuring reliable fixation of the device in the bone fragments. 4 il.

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The invention relates to medical technology, namely to traumatological instruments for the treatment of tubular bone fractures.

The purpose of the invention is to maintain the rigidity of the fixation of bone fragments.

FIG. 1 shows a device for transosseous osteosynthesis in the working position; in fig. 2 - device before insertion into bone fragments; in fig. 3- section A-A in FIG. 2; in fig. 4 is a section BB in FIG. 2

The device for transosseous osteosynthesis contains a metal rod 1 with a flat non-working end 2, an anvil pad 3 and a threaded end 4 with a tip 5. In the middle working section 6 of the rod 1 rings 7 with trapezoidal axial section are installed, between which spring washers 8 are installed. A threaded end 4 is provided with a sleeve 9 with a threaded hole, having tapered ends and flat keys 10 and 11, and check marks are provided to determine the required position of sleeve 9 (not shown).

The device is used as follows.

The mapped bone fragments 12 and 13 are drilled with the device in a position where the diameters of the rings 7 and washers 8 are equal, until the thrust pad 3 contacts the bone fragment 12. During the treatment, as the strength of the bone fragments 12 and 13 decreases, holding the rod 1 for simplified end 2 screw sleeve 9

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in the direction of the anvil pad 3. Oriented by reference marks on the threaded end 4, they deform the spring washers 8. At the same time, they increase in diameter, thus increasing the fixing strength of the fragments 12 and 13. In addition, due to the displacement of the washers 8 in the direction of the stop pads 3 provides compression of the bone fragments 12 and 13. After the fracture of the fracture part of the device, giving it an initial state, for which, rotating the sleeve 9, displace it in the direction of the point 5, orienting it along the reference marks.

The device provides the ability to control the diameter of the working part and maintain the rigidity of fixation of bone fragments 12 and 13 and the treatment process, which increases the reliability of the osteosynthesis.

Claims (1)

Invention Formula A device for transosseous osteosynthesis, containing a pointed rod and resilient and fixing elements mounted on it, characterized in that, in order to maintain the rigidity of fixation of bone fragments, it is provided with a sleeve mounted along the thread on the free end of the rod from the point, the elastic element is made rings with trapezoidal axial seam, and the locking element is made in the form of spring washers located between the rings, while the rod is made with an anvil pad. //