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Surgical instrument and system for securing vertebrae

A technique of surgical operation and instrument, applied in the direction of fixator, internal fixator, internal bone synthesis, etc., can solve cumbersome and other problems

Inactive Publication Date: 2015-02-18
SAFE ORTHOPAEDICS SAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, such existing instruments are sometimes removed before the procedure is completed, for example to enable a clearer view of the surgical field
[0009] The process of reattaching the instrument to the head of the pedicle screw is cumbersome

Method used

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  • Surgical instrument and system for securing vertebrae
  • Surgical instrument and system for securing vertebrae
  • Surgical instrument and system for securing vertebrae

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033] figure 1 is a general view of the constituent elements of the surgical instrument of the present invention.

[0034] The surgical instrument comprises a pedicle screw (1) designed to be fixed to a vertebra and comprising a bone anchor (2) extending near the head (3) which is split to accommodate the intervertebral connecting rod (4). When the rod (4) is in place, the cap (5) threaded to cooperate with the head (3) locks the resulting assembly.

[0035] In a particular configuration, the head (3) of the screw is arranged in a U-shape, the U-shape (6) is designed to receive the rod (4), and the internal tapping is designed to receive the cover (5) so that the screw (1) and The rods (4) are fixed together. The threaded part (2) of the screw (1) may be mounted fixed relative to the head (3) of the screw or even mounted to move relative to the head (3) of the screw. This type of screw (1 ) with a cap (5) is known to the general public and is part of the prior art spinal ...

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PUM

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Abstract

The present invention concerns a surgical instrument for securing vertebrae by posterior or posterolateral approach, consisting of: a tubular element formed from two members separated by a recessed longitudinal area, said members being linked at the distal end of same, each of said members having, on the inner surface of same, a guide groove with a dovetail section, an insert having two diametrically opposed longitudinal rails, having a dovetail section complementary to the section of said guide grooves. The proximal end of each of the members has an anchoring means capable of engaging with a complementary means, by transverse displacement of said legs. The invention also concerns a surgical instrument system for securing vertebrae by posterior or posterolateral approach, consisting of such an instrument.

Description

technical field [0001] The present invention relates to the field of surgical instruments for spinal stabilization procedures using screw-type bone anchoring elements via a posterior approach or via a posterolateral approach. [0002] The present invention relates more particularly to an instrument kit designed especially, but not exclusively, for lumbar, thoracic or even posterior cervical osteosynthesis performed by minimally invasive surgery or open surgery. [0003] When anatomical dysfunction occurs in the spine, vertebral bone anchors or pedicle screw type bone anchors are placed in place in the vertebrae and connected together by rod or plate connecting elements. Background technique [0004] Known from the prior art is the applicant's patent application PCT / FR10 / 000880. This document discloses an instrument for the fixation of at least two vertebrae by means of a bone anchor implant of the pedicle screw type, the instrument comprising: a bone anchor element designed...

Claims

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Application Information

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IPC IPC(8): A61B17/70
CPCA61B17/708A61B17/7076A61B17/7082
Inventor 多米尼克·珀蒂
Owner SAFE ORTHOPAEDICS SAS
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