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Bolt

A technology of bolts and studs, applied in the medical field, can solve the problems of damage to spinal tissues and devices, which cannot be easily readjusted

Active Publication Date: 2019-06-18
BRICON GMBH +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, traditional bolts have several disadvantages. First, the locking is an irreversible action. When the upper half is broken, it cannot be easily readjusted. Second, the upper half is an external hexagonal structure. If force is to be applied, it must be locked. The instrument must cover the upper half, so that the locking instrument may damage tissues and devices other than the spine during the fixation process. In addition to the aforementioned shortcomings, it also includes other shortcomings

Method used

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Embodiment Construction

[0046] In order to fully understand the purpose, features and effects of the present invention, the present invention will be described in detail by the following specific embodiments and accompanying drawings, as follows:

[0047] In the present invention, "a" or "an" are used to describe the elements, elements and components described herein. This is done for convenience of description only and to provide a general sense of the scope of the invention. Accordingly, unless it is obvious that it is otherwise indicated, such description should be read to include one, at least one, and the singular also includes the plural.

[0048] As used herein, the terms "comprises", "including", "has", "containing" or any other similar term are intended to cover a non-exclusive inclusion. For example, an element, structure, article, or device that contains a plurality of elements is not limited to those elements listed herein, but may include other elements not specifically listed but that ...

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Abstract

The invention discloses a bolt and belongs to the technical field of medical treatment. The bolt receives twisting force produced by a driving device to be combined with a U-shaped nut. The bolt comprises a stud and an extending piece. The stud refers to a first hollow column body. A thread is formed on the outer surface of the stud and a first twisting structure is formed on the inner surface ofthe stud. The extending piece refers to a second hollow column body and is further provided with a combination part and a force application part. The combination part is connected with one end of thestud. The force application part forms a second twisting structure on the inner surface of the second hollow column body. One first end face and one second end face of the combination part have different sectional areas, and the first end face is connected with one end of the stud. The first end face is not larger than the second end face. The twisting force acts on the second twisting structure so as to twist the stud to rotate until the stud feeds back acting force. When the twisting force is not smaller than the acting force, breakage happens from the end, connected with the stud, of the combination part and the stud is separated from the extending piece.

Description

technical field [0001] The present invention relates to the technical field of medical treatment, in particular to a bolt implanted in a living body for fixation such as a spinal column. Background technique [0002] In the traditional medical field, bolts are used to lock the spinal connecting rod between the two spines, the purpose of which is to stabilize and adjust the alignment of the spine. [0003] For the structure of traditional bolts, please refer to figure 1 , the upper half of the structure is an external hexagonal structure, and the lower half is a threaded structure. The user applies force to the spine through a locking device. When the applied force exceeds a threshold, the upper half and the lower half are separated, so that only The lower half locks the spine so that the upper half does not protrude beyond the spine. [0004] However, traditional bolts have several disadvantages. First, the locking is an irreversible action. When the upper half is broken, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16B35/04F16B37/14
Inventor 甄超赖玉树邓山侯宇许书富
Owner BRICON GMBH