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Asymmetric eight-figure steel plate built in epiphyseal arrest and application thereof

An asymmetric, steel plate technology used in the field of medical devices

Active Publication Date: 2011-01-26
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

It is composed of two titanium alloy pointed nail legs and a titanium alloy curved connector in the middle. Steel plate, not yet reported

Method used

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  • Asymmetric eight-figure steel plate built in epiphyseal arrest and application thereof
  • Asymmetric eight-figure steel plate built in epiphyseal arrest and application thereof
  • Asymmetric eight-figure steel plate built in epiphyseal arrest and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] 8-shaped steel plate fixed by screws and nuts

[0060] Please refer to the 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

[0062] 8-shaped steel plate fixed by screw and circlip

[0063] Please refer to the 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 asse...

Embodiment 3

[0066] Combination of 8-shaped steel plates of different sizes

[0067] 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.

[0068] (1) Symmetrical 8-shaped steel plate 6mm-6mm combination

[0069] Please refer to the 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 ...

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Abstract

The invention relates to an asymmetric eight-figure steel plate built in an epiphyseal arrest, comprising two single-side hole plates, wherein hinge holes are respectively arranged on the single-side hole plates which are connected by a pivot through the hinge holes and can be assembled into the asymmetric eight-figure steel plate. The invention also provides application of the asymmetric eight-figure steel plate built in the epiphyseal arrest. The asymmetric eight-figure steel plate can be assembled, has various specifications and can be combined in various manners according to the condition that the deformities on two sides of an epiphyseal line of a patient are asymmetric. Proved by an animal experiment, the asymmetric eight-figure steel plate can play a role of effectively controlling the unmatured epiphysis growth and the skeleton shape and is a safe and effective medical instrument for the semi-epiphyseal arrest operation mode.

Description

【Technical field】 [0001] The invention relates to a medical device, in particular, a figure-eight steel plate with built-in asymmetry for epiphyseal block for treating angular deformity of the knee joint of teenagers and its application. 【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 ankl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/80
CPCA61B17/1764A61B17/808A61B17/8061A61B17/68A61B17/1728A61B17/8095
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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