Spinal surgery instrument sets and methods

A technique of surgery, instrumentation, applied in the field of spinal surgery instrumentation sets and methods, capable of solving problems such as limited visibility

Inactive Publication Date: 2012-12-26
SYNTHES GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This metal block attached to the member limits visibility, as mentioned above

Method used

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  • Spinal surgery instrument sets and methods
  • Spinal surgery instrument sets and methods
  • Spinal surgery instrument sets and methods

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0040] Certain terms used in the following description are for convenience only and not for limitation. The words "right", "left", "lower" and "upper" indicate directions in the drawings to which reference is made. The words "inner" or "distal" and "outer" or "proximal" refer to directions toward and away from, respectively, the geometric center or orientation of the example instrumentation set and its associated components. The words "front", "rear", "above", "below", "side", "middle" and related words and / or phrases refer to example positions and orientations in the human body to which reference is made and are not limiting. The term includes the above words, derivatives thereof and words of similar import.

[0041] figure 1 , 2 and 11 represent an example bone anchor assembly, polyaxial bone screw or polyaxial pedicle screw 100 of an example instrument set for minimally invasive spinal surgery, which includes a body 102, a locking cap or bone screw cap 700 and a threaded...

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PUM

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Abstract

A minimally invasive system includes a bone screw (100), and a tissue retractor (200) having a partial pathway through it. The tissue retractor is removably couplable to the bone screw. An instrument (400) has a hollow cavity (406) and is removably couplable to the tissue retractor. A drive shaft (504) for a cap (700) of the bone screw has a diameter less than a diameter of the hollow cavity. A counter- torque handle (600) has an interlock end portion (604) by means of which it can be rotatably fixed to the instrument. The interlock end portion also includes an open-ended slot having a width greater than the drive shaft diameter such that the counter- torque handle is movable to and from the assembled configuration while the drive shaft is within the hollow cavity. A removal instrument (1200) has an interface (1204) for removing the retractor from the screw.

Description

Background technique [0001] Retractors provide the surgeon with access or access to the surgical site, for example during spinal surgery procedures such as discectomy, laminectomy, facetomy, interbody fusion, vertebral arch Root screw fixation and similar procedures. Common spine surgery is performed using an open procedure that results in relatively large incisions, destruction or excision of important soft tissues, and long recovery times for the patient. Minimally invasive techniques have become increasingly popular, particularly for spinal surgery, where surgical procedures are performed on a patient using relatively small incisions and surgical access, often resulting in more severe surgical procedures than open procedures. Small incision or multiple relatively small incisions, less soft tissue retraction and resection, and shorter recovery time for the patient. In some cases, minimally invasive procedures can achieve comparable or improved long-term surgical outcomes c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/70
CPCA61B17/7074A61B17/7079A61B17/7091A61B17/7086A61B17/708
Inventor J・彼德森R・索利塔里奥
Owner SYNTHES GMBH
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