Epiphysis retardant built-in 8-shaped steel plate and application thereof

A technology of steel plate and epiphysis, applied in the field of built-in 8-shaped steel plate for epiphyseal block

Inactive Publication Date: 2011-02-09
上海伯塔医疗器械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

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Method used

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  • Epiphysis retardant built-in 8-shaped steel plate and application thereof
  • Epiphysis retardant built-in 8-shaped steel plate and application thereof
  • Epiphysis retardant built-in 8-shaped steel plate and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] 8-shaped steel plate fixed by screws and nuts

[0059] Please refer to attached figure 1 , with figure 1It is a structural schematic diagram of a 8-shaped steel plate fixed by screws and nuts. The 8-shaped steel plate 1 includes a first one-side orifice 11, a second one-side orifice 12, a screw 13 and a nut 14, and the one-side orifice 1 and the one-side orifice 2 are respectively designed with first The hinge hole 111 and the second hinge hole 121 . The head of the screw rod 13 has threads 131, and the nut 14 is circular. The two one-sided orifice plates are connected through the first hinge hole 111 and the second hinge hole 121 by the screw rod 13 and the nut 14 . When assembling, make the first hinged hole 111 and the second hinged hole 121 coaxial, insert the screw rod 13, and screw the nut 14 on the screw thread 131, then the 8-shaped steel plate 1 is assembled.

Embodiment 2

[0061] 8-shaped steel plate fixed by screw and circlip

[0062] Please refer to attached figure 2 , with figure 2 It is a schematic diagram of the structure of the 8-shaped steel plate fixed by the slotted screw and the circlip. The 8-shaped steel plate 1 includes a first one-side orifice plate 11, a second one-side orifice plate 12, a groove screw 15 and a retaining spring 16, and the first one-side orifice plate 11 and the second one-side orifice plate 12, a first hinge hole 111 and a second hinge hole 121 are respectively designed. The head of the slot screw 15 has a slot 151 . The two one-sided orifice plates are connected by the slotted screw 15 and the snap spring 16 through the first hinge hole 111 and the second hinge hole 121 . When assembling, make the first hinged hole 111 and the second hinged hole 121 coaxial, insert the screw rod 15 into the draw-in groove, install the jump spring 16 at the draw-in groove 151, and then the 8-shaped steel plate 1 is assemble...

Embodiment 3

[0065] Combination of 8-shaped steel plates of different sizes

[0066] The first one-side orifice 11 and the second one-side orifice 12 of the 8-shaped steel plate 1 include three different sizes and specifications, that is, the distances from the center hole to the pivot hole are 6mm, 8mm and 10mm respectively, and these orifices can be assembled in total. It is made into 8-shaped steel plates of 6 different specifications. According to the actual size of both sides of the patient's epiphysis, the doctor chooses different matching combinations among the 6 matching methods.

[0067] (1) Symmetrical 8-shaped steel plate 6mm-6mm combination

[0068] Please refer to attached Figure 4 , with Figure 4 It is a structural schematic diagram of a combination of symmetrical 8-shaped steel plates of 6mm-6mm. When installing, select the first one-side orifice plate 11 with a size of 6mm and the second one-side orifice plate 12 with a size of 6mm, and assemble them according to the ...

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Abstract

The invention relates to an epiphysis retardant built-in 8-shaped steel plate comprising two single-side pore plates, wherein the single-side pore plates are respectively provided with a hinged hole and are connected by a pivot through the hinged holes, and the two single-side pore plates can be assembled into a symmetrical 8-shaped steel plate. The invention also provides an application of the 8-shaped steel plate. The single-side pore plates of the 8-shaped steel plate are connected by hinges, so that a fixed screw does not have outward cutting force because of the arc-shaped structure of bones, and the steel plate implantation position and epiphysis retardant effect are maintained. The 8-shaped steel plate is provided with a gap big enough on the joint of the single-side pore plates to avoid pressing angles, and the steel plate dose not contact with the epiphysis when being implanted, thus avoiding epiphysis press and reducing damage. The animal experiment research proves that the 8-shaped steel plate can effectively control immature epiphysis growth and epiphysis appearance and is a safe and effective medical instrument in the half epiphysis retardant operation mode.

Description

【Technical field】 [0001] The invention relates to a medical device, in particular to a built-in 8-shaped steel plate for epiphyseal block and its application for treating juvenile knee joint angular deformity. 【Background technique】 [0002] Angular deformity of the knee joint in adolescents is a group of relatively common lower extremity developmental abnormalities, generally including coronal angulation and sagittal angulation, and both can exist at the same time. Coronal angulation deformities mainly include idiopathic genu varus, epiphyseal diseases such as Blount's disease, and genu varus caused by trauma and tumors. Sagittal angulation generally manifests as a fixed knee in flexion and is often secondary to cerebral palsy, spina bifida, and other neuromuscular disorders. Angular deformity of the knee joint is clinically manifested as abnormal gait, knee joint pain and dysfunction, and severe cases can cause abnormalities of the hip and ankle joints. Most of the disea...

Claims

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Application Information

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IPC IPC(8): A61B17/80A61B17/88A61B17/90
CPCA61B17/808A61B17/8061A61B17/1728A61B17/8095
Inventor 赵黎李海喻洪流
Owner 上海伯塔医疗器械有限公司
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