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Assembling kit for installing anti-withdrawing ring and assembling method thereof

An assembly method and kit technology, applied in the field of medical devices, can solve the problems of small plastic deformation, deformation shrinkage, screw loosening, etc., and achieve the effect of good anchoring effect and preventing loosening or even falling off.

Pending Publication Date: 2021-07-02
宁波兆盈医疗器械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the riveting of this method is conical, the inverted eight-character deformation is produced, and the amount of plastic deformation is small. The surface is prone to deformation and shrinkage, and the anti-retraction ring falls off, causing the screws to loosen

Method used

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  • Assembling kit for installing anti-withdrawing ring and assembling method thereof
  • Assembling kit for installing anti-withdrawing ring and assembling method thereof
  • Assembling kit for installing anti-withdrawing ring and assembling method thereof

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Embodiment Construction

[0038] It should be understood that in the description of the present invention, the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner" and "outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and Simplified descriptions, rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and thus should not be construed as limiting the invention. In addition, the terms "first", "second", etc. are used for descriptive purposes only, and should not be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, a feature defined as "first", "second...

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Abstract

The invention provides an assembling kit for installing an anti-withdrawing ring and an assembling method thereof. The assembling kit comprises a fixing part and a punch which are used in cooperation, a fixing groove used for fixing an anterior cervical approach plate body is formed in the fixing part, and the head of the punch is of a columnar structure with a runway-shaped section or an oval section; and the anti-withdrawing ring is placed in a through hole of the anterior cervical approach plate body, the punch is pressed downwards to be inserted into the anti-withdrawing ring, the punch is rotated to enable the anti-withdrawing ring to expand outwards, and therefore the anti-withdrawing ring is fixed in the through hole of the anterior cervical approach plate body. According to the assembling kit, the head structure of the punch is changed into the columnar structure with the runway-shaped section or the oval section from an inverted cone shape, the punch extends into the anti-withdrawing ring, the punch rotates by a circle, and the outer peripheral wall of the anti-withdrawing is integrally expanded and deformed under the action of a couple, so that the outer wall of the anti-withdrawing and the inner wall of the through hole of the anterior cervical approach plate body are riveted, the anti-withdrawing ring and the anterior cervical approach plate body are fixed, and the anti-withdrawing ring is effectively prevented from loosening and even falling off.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and relates to an assembly kit for installing an anti-retraction ring and an assembly method thereof. Background technique [0002] Anterior cervical internal fixation technology is mainly for cases of cervical spine revision, osteoporosis, and cervical spine tumors. The existing anterior cervical internal fixation devices make it difficult to achieve the desired effect by biomechanics. Therefore, it is necessary to increase the internal fixation of the posterior cervical Fixation to improve the success rate of the operation, the anterior pedicle fixation technology of the lower cervical spine that has appeared in recent years has advantages in biomechanics and can provide strong fixation, but in the prior art, when the fixation plate is vibrated, the screws will produce Loose, intervertebral bone graft blocks are easy to shift, resulting in inaccurate fixation. [0003] CN209269851U dis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D39/00A61B17/70
CPCA61B17/7059B21D39/00
Inventor 姚力军张桐滨周文吴庆飞胡龙飞
Owner 宁波兆盈医疗器械有限公司
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