RU29654U1 - Intraosseous fixative for the treatment of patients with fractures of long tubular bones - Google Patents

Abstract

1. An intraosseous fixator for treating fractures of long tubular bones, comprising a tubular body in which a rod with fixation elements is installed, characterized in that, in order to ensure stable fixation of bone fragments by maintaining constant pressure on the walls of the medullary canal, the rod is installed in the body with the possibility of rotation and is made with thread with multidirectional threading at both ends, the locking elements are pivotally connected to holders made in the form of nuts mounted on the ends of the rod, Rich clips installed on the rod with access to housing through the window toward each drugu.2. The intraosseous fixative for the treatment of fractures of the tubular bones according to claim 1, characterized in that it is made of a biologically absorbable polymer material. The intraosseous fixative for the treatment of fractures of the tubular bones according to claim 1, characterized in that it is made of a bone allograft.

Description

Intracranial fixator for the treatment of patients

WITH NON-BREAKDOWNS OF LONG TUBULAR BONES

The utility model relates to the field of medicine, namely to traumatology and orthopedics.

Known retainer containing coaxially located hollow body with locking elements and a rod (1).

The disadvantage of this fixative is increased invasiveness and low reliability of fixation of bone fragments.

An intraosseous fixator for treating fractures of the tubular bones is also known, containing a tubular body, a rod and fixation elements (2).

The disadvantage of this intraosseous fixator is the insufficient stability of fixation of bone fragments.

The purpose of the claimed utility model is to ensure stable fixation of bone fragments by maintaining constant pressure on the walls of the bone marrow canal.

This goal is achieved by the fact that the rod is rotatably mounted in the housing and is made with thread with multidirectional threading at both ends, the fixing elements are pivotally connected to holders made in the form of nuts mounted on the ends of the rod, and the latches are mounted on the rod with the possibility of exit through case windows

M.C. A 61 B17 / 58

towards each other, and the retainer can be made of biologically absorbable polymer material or a bone allograft.

The utility model is illustrated by graphic material, which shows the proposed intraosseous fixative for the treatment of fractures of tubular bones.

The proposed retainer comprises a tubular body 1 with a pointed end 2, in which a threaded rod 3 with a splined end 4 is located. The left 5 and right 6 threads are made on the distal and proximal ends of the rod 3, on which the holders 7 and 8 of the fixing elements 9 and 10 are mounted. Holders 7 and 8 are made in the form of nuts. The locking elements 9 and 10 are pivotally connected to the holders 7 and 8 and are mounted on the rod 3 with the possibility of exit towards each other through the windows 11,12 of the housing 1. The rod 3 is equipped with a stop 13 in the guide sleeve 14 installed in the housing 1.

The intraosseous fixative can be made of a bone allograft or of a biologically absorbable polymeric material, for example, polyglycolide, polylactide, polydioxanone, polyetheramide, etc.

Polymer material is subject to destruction in the body environment. However, the period of its destruction far exceeds the period of fracture fusion and loss of the functional properties of the fixative does not occur.

in the case of the use of a bone graft in the process of consolidation of fragments, the process of reparative osteosynthesis occurs and the bone material of the fixative is also involved in the reconstruction of bone tissue.

The proposed intraosseous fixator is used as follows.

One of the known methods is introduced into the body 1 in the medullary canal. When the threaded rod 3 is rotated behind the slotted end 4, the holders 7 and 8 are moved along the threaded sections 5 and 6 of the rod 3 having right and left threads, and the fixing elements 9 and 10 are pulled out through the windows 11, 12, which, when introduced into the bone tissue, provide reliable stable compression of fragments of tubular bones. If necessary, the removal of the intraosseous fixator is carried out according to the usual method.

Using the proposed fixative for the treatment of fractures of tubular bones will improve the effectiveness of treatment and reduce its time by ensuring stable fixation of bone fragments.

Sources of information:

1.Aut. testimonial. USSR No. 950360, M. Cl. A 61B17 / 18, 1980

2.Aut. testimonial. USSR No. 1091921, M.C. A 61B17 / 18, 1984 Co-authors: J - Galeev F.Sh. Patent: - / //// Carriers B.G.

Izmalkov N.S.

Claims (3)

1. An intraosseous fixator for treating fractures of long tubular bones, comprising a tubular body in which a rod with fixation elements is installed, characterized in that, in order to ensure stable fixation of bone fragments by maintaining constant pressure on the walls of the medullary canal, the rod is installed in the body with the possibility of rotation and is made with thread with multidirectional threading at both ends, the locking elements are pivotally connected to holders made in the form of nuts mounted on the ends of the rod, Rich clips installed on the rod with access to housing through the window toward each other. 2. The intraosseous fixative for the treatment of fractures of the tubular bones according to claim 1, characterized in that it is made of a biologically absorbable polymer material. 3. The intraosseous fixative for the treatment of fractures of the tubular bones according to claim 1, characterized in that it is made of a bone allograft.