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GLOBUS MEDICAL INC

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Patent Application Titled “Center Lordotic Mesh Cage” Published Online (USPTO 20190224023): Globus Medical Inc.

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08/14/2019 | 05:21pm EDT

2019 AUG 14 (NewsRx) -- By a News Reporter-Staff News Editor at Health & Medicine Business Daily -- According to news reporting originating from Washington, D.C., by NewsRx journalists, a patent application by the inventors Howard, George (Green Lane, PA); Gray, Jason (East Greenville, PA), filed on April 1, 2019, was made available online on July 25, 2019.

The assignee for this patent application is Globus Medical Inc. (Audubon, Pennsylvania, United States).

Reporters obtained the following quote from the background information supplied by the inventors: “Diseases and injury to bone structures, such as the vertebral column, and conditions requiring surgical intervention are relatively common. A variety of conventional implant or graft devices are presently available for use in specific areas. The devices vary in size, shape, materials used, and insertion techniques. For example, in the vertebral column, grafts may provide restoration, decompression, or stabilization of the spine. Typically, these devices include a member that is inserted in the vertebral column to replace an injured portion. An example of such a procedure is a corpectomy, which involves the replacement of all or a portion of the vertebral body with an implant or graft. One exemplary graft is a mesh corpectomy cage which is secured to the adjacent vertebrae via end plates to maintain the position of the implant in situ.

“While these conventional devices may generally provide adequate results, they have several disadvantages. For example, often with a corpectomy that involves more than one level, the center segment of the corpectomy cage will settle into a position very close to the patient’s dura and spinal cord due to the natural lordosis/kyphosis of the patient. Such proximity to the dura and spinal cord may cause pain, discomfort or further damage to the vertebral column.

“Additionally, the endplates are typically secured to the cage with screws. The screws are often cumbersome to install and also make it more difficult to safely remove and replace any component of the construct. Furthermore, there is an inherent risk that the screws may be dropped during a procedure.”

In addition to obtaining background information on this patent application, NewsRx editors also obtained the inventors’ summary information for this patent application: “To meet this and other needs, a curved cage with press-fit endplates is provided. According to one embodiment, an implant assembly for engagement between a first vertebral body and a second vertebral body includes a tubular cage having an outer surface and an inner surface, wherein the cage extends from a first end to a second end, contains a plurality of openings extending from the outer surface to the inner surface, and wherein a longitudinal axis of the cage is curved. The implant assembly also includes a first endplate configured to engage the first vertebral body and press-fit into the first end and a second endplate configured to engage the second vertebral body and press-fit into the second end.

“According to another embodiment, an implant assembly for engagement between a first vertebral body and a second vertebral body includes a mesh cage having a passageway extending from a first end of the cage to a second end of the cage, wherein a plurality of radial openings are disposed through an outer surface of the mesh cage into the passageway. The implant assembly also includes a first endplate having a first tapered surface configured to press-fit into the first end and a second endplate have a second tapered surface configured to press-fit into the second end.”

The claims supplied by the inventors are:

“1. A method for implanting an implant assembly, comprising: coupling a first endplate having a first lordotic angle and a first height to a first end of a tubular cage of the implant assembly; coupling a second endplate having a second lordotic angle and a second height to a second end of the tubular cage; inserting the implant assembly between a first vertebral body and a second vertebral body, wherein the first endplate is configured to engage the first vertebral body and the second endplate is configured to engage the second vertebral body, wherein the tubular cage includes an outer surface and an inner surface, wherein the cage extends from the first end to the second end, contains a plurality of openings extending from the outer surface to the inner surface, and wherein a longitudinal axis of the cage is curved.

“2. The method of claim 1, wherein the cage, the first endplate, and the second endplate have the same cross-sectional configuration.

“3. The method of claim 2, wherein the cross-sectional configuration is one of circular, oval and kidney shaped.

“4. The method of claim 1, wherein the cage has a length selected from a plurality of pre-defined lengths or is cut to length.

“5. The method of claim 1, wherein the plurality of openings are radial and open into a hollow passage traversing the cage along the longitudinal axis.

“6. The method of claim 5, wherein the first endplate contains an upper surface and a lower surface, wherein the lower surface is configured to be tapered to engage the first end of the cage.

“7. The method of claim 6, wherein the upper surface is configured to have at least one protrusion to engage the first vertebral body.

“8. The method of claim 7, wherein the second endplate contains an upper surface and a lower surface, wherein the upper surface is configured to be tapered to engage the second end of the cage.

“9. The method of claim 8, wherein the lower surface is configured to have at least one protrusion to engage the second vertebral body.

“10. The method of claim 1, wherein the first endplate and the second endplate each comprise one or more tabs configured to limit torsional movement of the first endplate and the second endplate relative to the cage, and wherein the one or more tabs of the first endplate extend towards the second endplate and the one or more tabs of the second endplate extend towards the first endplate.

“11. The method of claim 1, wherein each of the first height and the second height is one of 1.5 mm, 3.5 mm, or 5.5 mm.

“12. A method for implanting an implant assembly, comprising: coupling a first endplate having a first lordotic angle and a first height to a first end of a mesh cage of the implant assembly; coupling a second endplate having a second lordotic angle and a second height to a second end of the mesh cage; inserting the implant assembly between a first vertebral body and a second vertebral body, wherein the first endplate is configured to engage the first vertebral body and the second endplate is configured to engage the second vertebral body, wherein the mesh cage includes a passageway extending from the first end of the cage to the second end of the cage, wherein a plurality of radial openings are disposed through an outer surface of the mesh cage into the passageway, wherein the first endplate and the second endplate each comprise one or more tabs configured to limit torsional movement of the first endplate and the second endplate relative to the cage, and wherein the one or more tabs of the first endplate extend towards the second endplate and the one or more tabs of the second endplate extend towards the first endplate.

“13. The method of claim 12, wherein the cage, the first endplate, and the second endplate have the same cross-sectional configuration.

“14. The method of claim 13, wherein the cross-sectional configuration is one of circular, oval and kidney shaped.

“15. The method of claim 12, wherein the cage has a length selected from a plurality of pre-defined lengths or is cut to length.

“16. The method of claim 12, wherein the cage is curved along a longitudinal axis of the implant assembly.

“17. The method of claim 16, wherein the first endplate contains an upper surface and a lower surface, wherein the lower surface is configured to be tapered to engage the first end of the cage.

“18. The method of claim 17, wherein the upper surface is configured to have at least one protrusion to engage the first vertebral body.

“19. The method of claim 18, wherein the second endplate contains an upper surface and a lower surface, wherein the upper surface is configured to be tapered to engage the second end of the cage.

“20. The method of claim 19, wherein the lower surface is configured to have at least one protrusion to engage the second vertebral body.”

For more information, see this patent application: Howard, George; Gray, Jason. Center Lordotic Mesh Cage. Filed April 1, 2019 and posted July 25, 2019. Patent URL: http://appft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220190224023%22.PGNR.&OS=DN/20190224023&RS=DN/20190224023

(Our reports deliver fact-based news of research and discoveries from around the world.)

Copyright © 2019 NewsRx LLC, Health & Medicine Business Daily, source Health Newsletters

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