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Surgical assembly for placing a pedicle screw cover

A pedicle screw and surgical technique, applied in the directions of fastening devices, fixators, internal fixators, etc., can solve the problems of not allowing the surgeon to apply a meaningful tightening torque, and failing to pass through.

Active Publication Date: 2018-04-17
SPINEWAY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] A disadvantage of the above-mentioned prior art surgical assemblies is the fact that they cannot be adapted to both cap types, single or double, by allowing the tightening of the inner cap as well as the tightening of the outer cap
In fact, the aforementioned technical field does not allow the surgeon to apply a meaningful tightening torque on the cap, regardless of its type, through the cap holder

Method used

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  • Surgical assembly for placing a pedicle screw cover
  • Surgical assembly for placing a pedicle screw cover
  • Surgical assembly for placing a pedicle screw cover

Examples

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Effect test

Embodiment Construction

[0051] The present invention relates to a surgical assembly 1 for arranging a cap 2 in a pedicle screw, especially for treating spinal pathology. The surgical assembly 1 according to the invention comprises a cover 2 itself and a cover holder 3 .

[0052] The cap 2 is adapted to be screwed into the head of a pedicle screw to hold the rod in place for connecting at least two pedicle screws.

[0053] For this purpose, and with reference to Figure 1 to Figure 2 , the cap 2 may have the shape of a single cap 2a comprising an external thread 2c capable of engaging the head of a pedicle screw and a central recess 4 for fastening comprising, for example, a star thread head connection so that cap 2 is tightened so tight.

[0054] refer to image 3 and Figure 4 , the cover 2 may also have the shape of a double cover 2b comprising an inner cover 5 and an outer cover 6 screwed together. The inner cover 5 includes a central recess 4 for connection and an outer thread 5a for engagin...

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Abstract

The invention relates to a surgical assembly which comprises: a cover (2) comprising an outer thread (2c) and a central recess for inserting a screw bit; a cover-holder in the form of a hollow sleeve(10) comprising a connection end (11) for connecting with the cover (2), and a locking pin (15) slidably mounted in the hollow sleeve (10) between a neutral position and a locking position of the cover; the cover (2) comprises at least two diametrically opposed radial notches (7), arranged away from an outer side wall of said cover (2), each of the notches (7) comprising at least one side groove (8); the connection end (11) is extended longitudinally by two diametrically opposed lugs (12) capable of being inserted into the notches (7) and each including a side shoulder (12a) which complementsthe groove (8) of the notch (7) capable of being inserted into said groove in order to lock the sleeve (10) axially onto the cover.

Description

technical field [0001] The present invention relates to the technical field of surgical devices, and more particularly to a surgical assembly for placing a cover in a pedicle screw, especially for the treatment of spinal pathology. Background technique [0002] Typically, a spinal implant includes at least two pedicle screws that are used to tighten on different vertebral anatomical elements (e.g., lamina, pedicle, vertebral body) and to connect the two pedicle screws to each other. Combined connection system (plate or rod). [0003] It is known to use threaded caps adapted to screw into the heads of pedicle screws and to hold the connecting rods in place. The caps used are in the form of a single cap comprising an external thread and a recess for fastening, for example comprising a connection for a star thread head, or in the form of a double cap comprising screwing one into the other inner and outer covers. The inner cover includes an intermediate hollow for fastening a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/70A61B17/88
CPCA61B17/7091A61B17/8891A61B17/8875A61B17/7001A61B17/8605
Inventor 朱利安·巴吉尔
Owner SPINEWAY
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