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Devices used to immobilize the spine

A spine and fixation nut technology, applied in fixers, internal fixators, internal bone synthesis, etc., can solve problems such as large operating space

Inactive Publication Date: 2014-10-22
ULRIKH GMBKH & KO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the bone screw is first fixed in the vertebral body, the subsequent insertion of the rod through the eye of the connector requires a large maneuvering space

Method used

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  • Devices used to immobilize the spine
  • Devices used to immobilize the spine
  • Devices used to immobilize the spine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] A device for fixing the spine is shown in the figure, which comprises a rod-bolt system consisting of a single part of a bone screw 1 with a screw shaft 2 , a rod 3 and a connector 4 .

[0030] Figure 8 A bone screw 1 is shown here alone, which has a first threaded section 5 for insertion into a bone. Adjacent to the first threaded section 5 is a shaft shoulder 6 , and a second threaded section 7 is formed on the end of the screw shaft 2 of the bone screw 1 opposite the first threaded section 5 . Extending in the screw shaft is a channel 8 for intubation ( Figure 5 ).

[0031] Provision is made within the framework of the operation for the fixation of the spine to insert a plurality of such bone screws 1 with the first threaded section 5 into the vertebral body of the spine. On the shaft shoulder 6 of the bone screw 1, the connector 4 can then be placed, which has a connector body 9 with a through-hole 10 and a rod receptacle 11 open on one side, into which the rod...

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PUM

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Abstract

The invention relates to a device for stabilizing the spinal column, with a bone screw (1), which has a screw shank (2) and a first threaded portion (5), for introduction into the bone, with a rod (3) and with a connector (4), which can be fastened to the bone screw (1) and is intended for releasably connecting the rod (3) to the bone screw (1). The connector (4) has a connector body (9) with a through-opening (10) and a rod receptacle (11), which is open on one side and into which the rod (3) can be clipped by using a spring action.

Description

technical field [0001] The invention relates to a device for fixing the spine, the device has a bone screw with a screw shaft, the bone screw has a first threaded section for insertion into the bone, the device also has a rod and has a bone screw that can be fixed on the bone screw A connector for releasably connecting the rod to the bone screw. Background technique [0002] Traumatic or degenerative diseases of the spine often require immobilization of the spine by means of instruments in order to restore or ensure the support of the spine. For example, one such instrument can be cited the rod-screw system shown in EP 1 254 639 A1, which has a bone screw that can be inserted into the vertebral body as a fixation bracket for a connector with a ring eye through which the rod can pass. eye penetration. Rods are used to combine multiple vertebral bodies into a stable unit, for which purpose the rod must pass through the eyelets of several applied bone screws. Since the bone ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/70A61B17/88
Inventor C·麦克
Owner ULRIKH GMBKH & KO KG