阅读说明：本技术 一种用于Ilizarov骨外固定器的定心旋转装置 (Centering and rotating device for Ilizarov external bone fixator ) 是由 苏鹏 胡湘宇 张力 李剑 李硕 樊瑜波 于 2020-07-27 设计创作，主要内容包括：一种用于Ilizarov骨外固定器的定心旋转装置,包括固定组件、旋转调节组件及旋转定位组件；其中固定组件的一端用于与Ilizarov骨外固定器的近端固定环固定连接,另一端与旋转调节组件相连接；旋转调节组件的一端与固定组件相连接,另一端设置于Ilizarov骨外固定器的远端调节环上,用于向远端调节环施加旋转应力；旋转定位组件的一端与Ilizarov骨外固定器的近端固定环固定连接,另一端通过中空的固定环活动地套设于Ilizarov骨外固定器的远端调节环上,使远端调节环能够在固定环的空间内移动。本发明拆卸安装便利,能实现远端圆环独立旋转调节,从而起到矫正偏移骨骼力线的作用。(A centering rotating device for an Ilizarov external bone fixator comprises a fixing assembly, a rotating adjusting assembly and a rotating positioning assembly; one end of the fixing component is fixedly connected with a proximal fixing ring of the Ilizarov external bone fixator, and the other end of the fixing component is connected with the rotation adjusting component; one end of the rotating adjusting component is connected with the fixing component, and the other end of the rotating adjusting component is arranged on a far-end adjusting ring of the Ilizarov external bone fixator and used for applying rotating stress to the far-end adjusting ring; one end of the rotary positioning component is fixedly connected with a proximal end fixing ring of the Ilizarov external bone fixator, and the other end of the rotary positioning component is movably sleeved on a distal end adjusting ring of the Ilizarov external bone fixator through a hollow fixing ring, so that the distal end adjusting ring can move in the space of the fixing ring. The invention is convenient to disassemble and assemble, and can realize independent rotation adjustment of the far-end ring, thereby playing a role in correcting the offset bone force line.)

1. A centering rotating device for an Ilizarov external bone fixator, comprising:

the centering rotating device for the Ilizarov external bone fixator comprises a fixing component, a rotating adjusting component and a rotating positioning component;

wherein one end of the fixing component is used for being fixedly connected with a proximal fixing ring of the Ilizarov external bone fixator, and the other end of the fixing component is connected with the rotation adjusting component;

one end of the rotating adjusting component is connected with the fixing component, and the other end of the rotating adjusting component is arranged on a distal adjusting ring of the Ilizarov external bone fixator and used for applying rotating stress to the distal adjusting ring;

one end of the rotary positioning component is fixedly connected with a proximal end fixing ring of the Ilizarov external bone fixator, and the other end of the rotary positioning component is movably sleeved on a distal end adjusting ring of the Ilizarov external bone fixator through a hollow fixing ring, so that the distal end adjusting ring can move in the space of the fixing ring.

2. The centering rotating device for an Ilizarov external bone fixator of claim 1, wherein: the fixing assembly comprises a first fixing clamping piece and a first positioning ring, and is fixedly connected with a proximal fixing ring of the Ilizarov external bone fixator through bolts.

3. The centering rotating device for an Ilizarov external bone fixator of claim 1, wherein: the rotary adjusting assembly comprises an adjusting gear, a rotary gear, a positioning bolt, a gear box, a second positioning ring, a fixing bolt and a gasket; the adjusting gear is arranged in the gear box and is meshed with the rotating gear; a gear guide rail is arranged in the gear box, the rotating gear is movably clamped on the gear guide rail, and the second positioning ring is fixedly connected with a far-end adjusting ring of the Ilizarov bone external fixator through a positioning bolt and a gasket.

4. The centering rotating device for an Ilizarov external bone fixator of claim 1, wherein: the rotary positioning assembly comprises a second fixed clamping piece, a fixed nut, a threaded column, a rotary clamping piece and a locking bolt; one end of the rotary positioning assembly is fixedly connected with a proximal end fixing ring of the Ilizarov external bone fixator through the second fixing clip and the fixing nut and the first positioning ring; the other end of the rotary positioning assembly is connected with the rotary clamping piece through the threaded column.

5. The centering rotating device for an Ilizarov external bone fixator of claim 4, wherein: the hollow fixing ring is formed by locking the rotating clamping piece through the locking bolt and movably sleeved on the far-end adjusting ring, so that the far-end adjusting ring can move in the space of the fixing ring.

6. The centering rotating device for an Ilizarov external bone fixator of claim 2, wherein: the first positioning ring is an 1/2 or 1/3 or 1/4 ring.

7. The centering rotating device for an Ilizarov external bone fixator of claim 3, wherein: the second positioning ring is an 1/2 or 1/3 or 1/4 ring.

8. The centering rotating device for an Ilizarov external bone fixator of claim 3, wherein: the adjusting gear is a hexagonal straight hole adjusted by a hexagonal wrench, or an adjusting mode of a straight wrench, a cross wrench or a cross wrench is adopted.

Technical Field

The invention relates to the field of orthopedic correction and rehabilitation, in particular to a centering rotating device for an Ilizarov external bone fixator.

Background

At present, the bone deformity problem needing to be treated clinically exists in orthopedics department, and when the treatment is carried out through surgical skeletal surgery, a fixing device is indispensable, and the traditional fixing mode generally adopts steel plate internal fixation. Since the introduction of Ilizarov orthopedic technology in the 90 s, orthopedic deformity correction has been developed in a spanning manner, and Ilizarov technology adopts a multi-plane thin Kirschner wire to penetrate limbs and bone tissues and connect an annular fixator, generally, a steel needle is fixed at a proper position near a fracture position, and the steel needle is fixed on an Ilizarov external fixator through a needle clamp to realize fixation and adjustment of bones. The Ilizarov external fixator adopts a needle-threading clamp fixed on certain hole positions on an upper fixing ring and a lower fixing ring to achieve the mutual fixed connection of the human fracture and the upper ring and the lower ring of the external fixator, but the design of the components of the Ilizarov external fixator has the defects of defects and single configuration, and the Ilizarov external fixator is beneficial to popularizing the Ilizarov technology to a wider application range by taking a parallel mechanism which is developed more mature at present in mechanical engineering as a carrier for developing the Ilizarov technology. The existing Ilizarov external bone fixator can only provide stretching in one direction and rotation in one plane, rotation dislocation and the like easily occur when doctors adjust the bone by manpower, manual correction on a bone force line is difficult, limitation is large, and therefore correction effect is not ideal finally, and therefore research on a mechanism which independently rotates around a fixed point of a rotation center has great medical value.

Disclosure of Invention

In view of the above-mentioned shortcomings in the prior art, the present invention provides a centering and rotating device for an Ilizarov external bone fixator, comprising a fixing component, a rotation adjusting component and a rotation positioning component; wherein one end of the fixing component is used for being fixedly connected with a proximal fixing ring of the Ilizarov external bone fixator, and the other end of the fixing component is connected with the rotation adjusting component; one end of the rotating adjusting component is connected with the fixing component, and the other end of the rotating adjusting component is arranged on a distal adjusting ring of the Ilizarov external bone fixator and used for applying rotating stress to the distal adjusting ring; one end of the rotary positioning component is fixedly connected with a proximal end fixing ring of the Ilizarov external bone fixator, and the other end of the rotary positioning component is movably sleeved on a distal end adjusting ring of the Ilizarov external bone fixator through a hollow fixing ring, so that the distal end adjusting ring can move in the space of the fixing ring.

In a preferred embodiment, the fixation assembly includes a first fixation jaw and a first positioning ring fixedly connected by bolts to a proximal fixation ring of the Ilizarov external bone fixator.

In a preferred embodiment, the first positioning ring is an 1/2 or 1/3 or 1/4 ring.

In a preferred embodiment, the rotation adjusting assembly comprises an adjusting gear, a rotating gear, a positioning bolt, a gear box, a second positioning ring, a fixing bolt and a gasket; the adjusting gear is arranged in the gear box and is meshed with the rotating gear; a gear guide rail is arranged in the gear box, the rotating gear is movably clamped on the gear guide rail, and the second positioning ring is fixedly connected with a far-end adjusting ring of the Ilizarov bone external fixator through a positioning bolt and a gasket.

In a preferred embodiment, the second positioning ring is an 1/2 or 1/3 or 1/4 ring.

In a preferred embodiment, the rotating positioning component comprises a second fixed clamping piece, a fixed nut, a threaded column, a rotating clamping piece and a locking bolt; one end of the rotary positioning assembly is fixedly connected with a proximal end fixing ring of the Ilizarov external bone fixator through the second fixing clip and the fixing nut and the first positioning ring; the other end of the rotary positioning assembly is connected with the rotary clamping piece through the threaded column.

In a preferred embodiment, the hollow fixing ring is formed by locking the rotating clamping piece through the locking bolt, and is movably sleeved on the distal adjusting ring, so that the distal adjusting ring can move in the space of the fixing ring.

In a preferred embodiment, the adjusting gear is a hexagonal straight hole adjusted by a hexagonal wrench, or an adjustment mode of a straight or cross wrench is adopted.

On the basis of fully analyzing the adjusting principle of the Ilizarov external skeletal fixation frame, the invention provides an external skeletal fixation device for limb deformity correction and an adjusting mechanism which independently rotates around a fixed point of a rotation center, which is convenient to disassemble and install, and can realize independent rotation adjustment around the fixed point of the rotation center under the condition that a far-end circular ring is not fixed relative to a near-end fixed ring, thereby playing a role in correcting offset skeletal force lines.

Drawings

Fig. 1 is a schematic structural view of a centering and rotating device for an Ilizarov external bone fixator according to the present invention.

Fig. 2 is a structural diagram illustrating the combination of the centering rotating device for the Ilizarov external bone fixator and the Ilizarov external bone fixator.

Fig. 3 is a partially detailed view of a centering rotating device rotating adjustment assembly for an Ilizarov external bone fixator according to the present invention.

Fig. 4 is a schematic view of a centering rotating device rotating adjustment assembly for an Ilizarov external bone fixator according to the present invention.

FIG. 5 is a schematic view of a centering rotating device rotating positioning assembly for Ilizarov external bone fixator according to the present invention.

Fig. 6 is a schematic view of posture transformation of a centering rotating device for an Ilizarov external bone fixator according to the present invention.

The first fixing clip 1, the first positioning ring 2 and the near end fixing ring 3 are arranged on the base; the device comprises an adjusting gear 4, a rotating gear 5, a positioning bolt 6, a gear box 7, a second positioning ring 8, a far-end adjusting ring 9, a fixing bolt 10 and a gasket 11; the clamping device comprises a second fixing clamping piece 12, a fixing nut 13, a threaded column 14, a rotating clamping piece 15 and a locking bolt 16.

Detailed Description

In order to solve the defects of the prior art, the invention provides a centering rotating device for an Ilizarov external bone fixator, and the technical scheme of the invention is described in detail by embodiments.