News Column

Researchers Submit Patent Application, "Transforaminal Prosthetic Spinal Disc Apparatus", for Approval

July 3, 2014



By a News Reporter-Staff News Editor at Politics & Government Week -- From Washington, D.C., VerticalNews journalists report that a patent application by the inventors Hansell, Noah (King of Prussia, PA); Bennett, Jeffrey (Pottstown, PA); Paul, David C. (Phoenixville, PA), filed on February 12, 2014, was made available online on June 19, 2014.

The patent's assignee is Globus Medical, Inc.

News editors obtained the following quote from the background information supplied by the inventors: "As an alternative to vertebral fusion, various prosthetic discs have been developed. The first prosthetics embodied a wide variety of ideas, such as ball bearings, springs, metal spikes and other perceived aids. These prosthetics are all made to replace the entire intervertebral disc space.

"One approach to the intervertebral space is the transforaminal approach. This approach has been used in interbody lumbar fusion surgeries and involves approaching the intervertebral space through the intervertebral foramina. This approach often requires the removal of one facet joint on either the left or right side. After removal, the surgeon gains access to the intervertebral space through the intervertebral foramina. One drawback to this method is that the removal of a facet joint may lead to instability of the spine. Despite this drawback, in many instances the transforaminal approach is favored in that there is reduced risk to the organs and greater vessels (as compared to the anterior approach) and reduced risk to the spinal cord (as to the posterior approach).

"Once a spinal disc is positioned, there may be a need to limit the motion of the disc and convert the disc implant into a fusion implant. This generally requires the removal of the disc and the insertion of additional implants. Therefore there is a need for a single implant that can be utilized to convert prosthetic disc into a fusion device tailored for use in a transforaminal approach."

As a supplement to the background information on this patent application, VerticalNews correspondents also obtained the inventors' summary information for this patent application: "The present invention generally relates to an intervertebral prosthetic implant having a first endplate having a first surface configured to substantially engage with a first vertebral body and a second surface having an extension with a concave contact surface, the concave contact surface being spaced apart from the second surface. A second endplate is provided with a first surface configured to substantially engage with a second vertebral body and a second surface comprising a convex contact surface, and the second endplate having first and second side rails positioned along and above the second surface defining a first and second arcuate slots on opposing sides of the second surface. A plate connects the first and second endplates to restrict motion between the first and second endplates. The concave contact surface of the extension substantially contacts the convex contact surface of the second endplate and the concave contact surface of the extension directly engages the first and second arcuate slots of the second endplate. The implant is configured for implantation into the intervertebral space by a transforaminal approach.

BRIEF DESCRIPTION OF THE DRAWINGS

"The invention will be more readily understood with reference to the embodiments thereof illustrated in the attached figures, in which:

"FIG. 1 is an illustration of an embodiment of a prosthetic disc design of the present invention;

"FIG. 2 is an illustration of a bottom endplate of a prosthetic disc design of the present invention;

"FIG. 3 is an illustration of a top endplate of a prosthetic disc design of the present invention;

"FIG. 4 is an illustration of an embodiment of a prosthetic disc design of the present invention;

"FIG. 5 is an illustration of an embodiment of a prosthetic disc design of the present invention;

"FIG. 6 is an illustration of a keel of a prosthetic disc design of the present invention;

"FIG. 7 is an illustration of a keel of a prosthetic disc design of the present invention;

"FIG. 8 is a perspective view of another embodiment of the present invention;

"FIG. 9 is a perspective view of an endplate of the embodiment of FIG. 8;

"FIG. 10 is a perspective view of an endplate of the embodiment of FIG. 8;

"FIG. 11 is a perspective view of an endplate of the embodiment of FIG. 8;

"FIG. 12 is a perspective view of an endplate of the embodiment of FIG. 8;

"FIG. 13 is a perspective view of an embodiment of the present invention;

"FIG. 14 is an exploded view of the embodiment of FIG. 13;

"FIG. 15 is a cross sectional view of the embodiment of FIG. 13;

"FIG. 16 is a perspective view of an embodiment of the present invention;

"FIG. 17 is an exploded view of the embodiment of FIG. 16;

"FIG. 18 is a cross sectional view of the embodiment of FIG. 16;

"FIG. 19 is a perspective view of an embodiment of the present invention;

"FIG. 20 is an exploded view of the embodiment of FIG. 20;

"FIG. 21 is perspective view of an endplate of the embodiment of FIG. 20;

"FIG. 22 is a cross sectional view of the embodiment of FIG. 20;

"FIG. 23 is an exploded view of one particular embodiment according to the present invention;

"FIGS. 23 and 24 illustrate the present invention according to the embodiment illustrated in FIG. 23."

For additional information on this patent application, see: Hansell, Noah; Bennett, Jeffrey; Paul, David C. Transforaminal Prosthetic Spinal Disc Apparatus. Filed February 12, 2014 and posted June 19, 2014. Patent URL: http://appft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&u=%2Fnetahtml%2FPTO%2Fsearch-adv.html&r=1566&p=32&f=G&l=50&d=PG01&S1=20140612.PD.&OS=PD/20140612&RS=PD/20140612

Keywords for this news article include: Globus Medical Inc.

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Source: Politics & Government Week


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