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Surgical tool for mounting internal epiphyseal arrest figure-8 steel plate

A surgical tool and epiphysis technology, applied in the field of medical devices, to shorten the operation time, reduce the pain of patients, and avoid damage to the epiphysis

Inactive Publication Date: 2011-02-16
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. The overall shape is inverted U-shaped. It is used for epiphyseal plate fixation, bone and joint deformity, and trauma surgery. Surgical tools have not been reported yet

Method used

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  • Surgical tool for mounting internal epiphyseal arrest figure-8 steel plate
  • Surgical tool for mounting internal epiphyseal arrest figure-8 steel plate
  • Surgical tool for mounting internal epiphyseal arrest figure-8 steel plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] 8-shaped steel plate fixed by screws and nuts

[0056] 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, small in size and easy to install. 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

[0058] 8-shaped steel plate fixed by screw and circlip

[0059] 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

[0062] Combination of 8-shaped steel plates of different sizes

[0063] 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.

[0064] (1) Symmetrical 8-shaped steel plate 6mm-6mm combination

[0065] 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 a surgical tool for mounting an internal epiphyseal arrest figure-8 steel plate. The surgical tool comprises a figure-8 template, a template clamp and a guide instrument, wherein the guide instrument is provided with an angle adjusting device; the angle adjusting device is provided with an angle adjusting knob, a scale plate and a rotating shaft which are connected with one another through connecting screws; an angle indicating needle is fixed on the angle adjusting knob through a screw; a connected whole is fixed on a connecting block of a double-aperture guide instrument through four screw holes on the scale plate and fixed on a guide sleeve of the double-aperture guide instrument through the connecting block of the double-aperture guide instrument; and a fastening bolt can make the angle adjusting device fixed at a correct position on the guide sleeve. In the angle-adjustable double-aperture guide instrument, an angle is formed between a drilling direction and an epiphysis horizontal plane through the angle adjusting device on the guide sleeve and two guide pore canals with different pore diameters, so that a screw insertion direction is deviated from the epiphysis, epiphyseal arrest effect is achieved and the epiphysis is prevented from being damaged.

Description

【Technical field】 [0001] The invention relates to a medical device, in particular to a surgical tool for treating the angular deformity of the knee joint of adolescents with a built-in 8-shaped steel plate for epiphyseal block. 【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. ...

Claims

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Application Information

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IPC IPC(8): A61B17/92A61B17/80
CPCA61B17/808A61B17/8061A61B17/1728A61B17/8095
Inventor 喻洪流赵黎李海李继才
Owner 上海伯塔医疗器械有限公司
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