Description

Detailed Description of the Invention

〔Technical field〕
The present invention relates to orthopedic Expandable Rod and methods used to introduce and / or operate these devices.

[Background Technology]
Many types of spinal displacement can cause pain, limit the range of motion, or damage the nervous system in the spine. These displacements can arise from, but are not limited to, trauma, tumor, disc degeneration, and disease. One common example of spinal displacement is an abnormal curvature of the spine, such as that associated with scoliosis, kyphosis, and / or lordosis. Scoliosis is a left-right curvature of the spine that can affect an individual’s chest dimensions and thereby affect the function of internal organs such as the lungs and heart.

  Treatment of scoliosis may include, for example, reducing the severity of the mutation and preventing its further progression through physical therapy, bracing, and / or surgery. Surgical procedures for treating scoliosis can include spinal fusion, which straightens the vertebrae and places one or more rods along the spinal column to maintain its alignment.

[Summary of the Invention]
Some embodiments herein are an expandable rod assembly, an elongate sleeve comprising a cannula extending therethrough, an expansion head disposed within the cannula and a first direction extending. An Expandable Rod having an existing body, wherein the enlarging head divides the cannula into a first chamber and a second chamber, an actuating rod, an enlarging head disposed in the cannula and a second direction An expandable rod assembly that can include: a fixed rod with a body extending to the valve; and a valve assembly configured to control fluid flow between the first chamber and the second chamber. About.

  Another embodiment herein is an expandable rod assembly comprising an elongated sleeve comprising a cannula extending therethrough, a valve body disposed within the cannula, and a valve comprising an enlarged head An assembly, wherein the expansion head divides the cannula into a first chamber and a second chamber, a valve assembly, a first expansion head disposed in the first chamber, and a first direction A first actuating rod comprising a body extending to the first actuating rod, wherein the first expanding head divides the first chamber into a first sub-chamber and a second sub-chamber. A second actuation rod comprising a second enlargement head disposed in the second chamber and a body extending in a second direction, wherein the second enlargement head comprises the second enlargement head The chamber is connected to the third sub And a second actuating rod that divides the chamber into a fourth subchamber, wherein the valve assembly is between the first subchamber and the second subchamber and the third An expandable rod assembly configured to control fluid flow between the sub-chamber and the fourth sub-chamber.

  Some embodiments herein are an expandable rod assembly, an elongate sleeve comprising a cannula and a port extending longitudinally therethrough, wherein the port is in and out of the cannula. An elongate sleeve configured to move fluid and an actuating rod comprising a locking member, wherein at least a portion of the actuating rod is disposed within the cannula at a first end of the elongate sleeve. An expandable rod assembly comprising: an actuating rod; and a fixation rod comprising a head, wherein the head is disposed within the cannula at the second end of the elongate sleeve. About.

  Another embodiment of the present disclosure is a method for expanding an expandable rod assembly, the method comprising providing an expandable rod assembly, wherein the expandable rod assembly has a first length. Providing, coupling the port to a fluid source, and taking fluid into the cannula, wherein the fluid translates the actuating rod at least partially out of the cannula. And thereby expanding the expandable rod assembly to a second length that is longer than the first length.