Surgical tether apparatus and methods of use

a technology of tethering device and tethering device, which is applied in the field of surgical tethering device and methods of use, can solve the problems of no longer providing any further benefit to constraint device, constraint device may last longer than traditional instrumentation, and may take several months to form, etc., to achieve the effect of reducing load and wear, and modulating load

Inactive Publication Date: 2014-02-06
SIMPIRICA SPINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent describes a procedure called spinal fusion, where bone grafting material is placed between two vertebrae to induce bone growth and join them together. A constraint device is used to stabilize the spinal segment during the fusion process. The constraint device reduces loads on the implant and is compliant, meaning it can accommodate small amounts of movement without causing excessive wear and tear. This results in lower loading and wear compared to rigid instrumentation systems. The technical effect of the patent is to improve the outcome and longevity of spinal fusion procedures.

Problems solved by technology

Additionally, the constraint device stabilizes the segment as it fuses together, which may take several months to form following the fusion procedure.
After fusion has occurred, the constraint no longer provides any further benefit and it may be removed or left in place.
If left in place, the constraint device may last longer than traditional instrumentation.

Method used

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  • Surgical tether apparatus and methods of use
  • Surgical tether apparatus and methods of use
  • Surgical tether apparatus and methods of use

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Embodiment Construction

[0028]FIG. 1A is a schematic diagram illustrating the lumbar region of the spine including the spinous processes (SP), facet joints (FJ), lamina (L), transverse processes (TP), and sacrum (S). FIG. 1B is a schematic illustration showing a portion of the lumbar region of the spine taken along a sagittal plane and is useful for defining the terms “neutral position,”“flexion,” and “extension” that are often used in this disclosure.

[0029]As used herein, “neutral position” refers to the position in which the patient's spine rests in a relaxed standing position. The “neutral position” will vary from patient to patient. Usually, such a neutral position will be characterized by a slight curvature or lordosis of the lumbar spine where the spine has a slight anterior convexity and slight posterior concavity. In some cases, the presence of the constraint of the present invention may modify the neutral position, e.g. the device may apply an initial force which defines a “new” neutral position h...

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Abstract

Methods and apparatus for controlling flexion in a spinal segment of a patient include performing a spinal fusion procedure on a pair of adjacent vertebrae in the spinal segment and implanting a constraint device into the patient. Adjusting length or tension in the constraint device allows the constraint device to provide a force a force resistant to flexion of the spinal segment undergoing fusion. The constraint device also modulates loads borne by the spinal segment undergoing fusion or tissue adjacent thereto.

Description

CROSS-REFERENCE[0001]The present application is continuation of U.S. patent application Ser. No. 12 / 721,238 (Attorney Docket No. 41564-714.201) filed on Mar. 10, 2010, now U.S. Pat. No. ______, which is a non-provisional of, and claims the benefit of U.S. Provisional Patent Application Ser. No. 61 / 158,886 (Attorney Docket No. 41564-714.101) filed Mar. 10, 2009, now expired; the entire contents of each of which are incorporated herein by reference.[0002]The present application is also related to the U.S. Provisional Patent Application Ser. No. 61 / 158,892 (Attorney Docket No. 41564-713.101) filed Mar. 10, 2009, the entire contents of which is incorporated herein by reference.BACKGROUND OF THE INVENTION[0003]1. Field of the Invention[0004]The present invention generally relates to medical methods and apparatus. More particularly, the present invention relates to methods and apparatus used to restrict flexion of a fused spinal segment. The methods and apparatus disclosed herein may be u...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A61B17/70
CPCA61B17/7067A61B17/7055A61B17/7062A61B17/7097A61F2/442A61F2/4455
Inventor ALAMIN, TODDCAHILL, COLINFIELDING, LOUISKOTHARI, MANISH
Owner SIMPIRICA SPINE
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