US 2021/0275315 A1Published application

An expandable cage

AssigneeTobb Ekonomi Ve Teknoloji Universitesi

InventorTeyfik DEMIR

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Abstract

An expandable cage which is used in spinal surgery and which allows adjustment of distance between two vertebrae in which it is placed as preferred. An expandable cage-basically includes at least one body which is located in emptied area between damaged vertebrae during the surgical procedure and serves as a disc; and at least one movable element which is located on the body and is fitted in the opening made in the body by means of the retainers disposed at the sides thereof; which has a toothed surface contacting with the upper vertebra and being attached to it; and the height of which can be adjusted by pushing the protrusion provided in the lower portion thereof according to the intervertebral distance of patient by means of the expansion apparatus.

Claims15

Dependent claims

An expandable cage configuration that preserves the distance between two vertebrae as preferred during cervical surgical procedures, can be implanted easily, does not cause any infection, and can be used in patients with different body and bone type due to the height-adjustable structure thereof, characterized by:

at least one body which is located in the emptied area between the damaged vertebrae during the surgical procedure and serves as a disc, at least one movable element which is located on the body and is fitted in the opening made in the body by means of retainers disposed at the sides thereof;
which has a toothed surface contacting with the upper vertebra and being attached to it;
and the height of which can be adjusted by pushing a protrusion provided in the lower portion thereof according to the intervertebral distance of the patient by means of an expansion apparatus.

Dependencies are inferred from the claim text.

Facts

Application: 16/473,043Filed 28 Dec 2017
Priority: TR 2016/2037230 Dec 2016
Published: 9 Sep 2021
Term ends: Not estimatedThe source records don’t support an estimate.

Classification11 codes

A61F 2/442
For the spine, e.g. vertebrae or spinal discs: intervertebral or spinal discs, e.g. resilient
A61F 2/30771
Special external or bone-contacting surface, e.g. coating for improving bone ingrowth: applied in original prostheses, e.g. holes or grooves
A61F 2/4455
For the spine, e.g. vertebrae or spinal discs: for the fusion of spinal bodies, e.g. intervertebral fusion of adjacent spinal bodies, e.g. fusion…
A61F 2/4611
For insertion or extraction of endoprosthetic joints or of accessories thereof: of spinal prostheses

Family

US 11,185,420 B2Related patent
US 2021/0275315 A1This patent

From the US filing history. Foreign family members aren’t listed.

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