EP-4734884-A1 - MULTI-CHAMBER SPINAL IMPLANT DEVICE AND METHOD FOR USING THE SAME

EP4734884A1EP 4734884 A1EP4734884 A1EP 4734884A1EP-4734884-A1

Abstract

A multi-chamber spinal implant is provided that includes at least a first chamber and a second chamber. The first chamber is defined by a first wall having a first wall thickness disposed therebetween. The first chamber has an interior cavity and the first wall has a first porosity. The second chamber is defined by a second wall having a second wall thickness disposed therebetween. The second chamber has an interior cavity and the second wall has a second porosity. The first porosity permits passage of fluids through the first wall thickness and permits blood vessels and fibrous tissue to extend therethrough the first wall thickness. The second porosity is configured to permit passage of fluids through the second wall thickness and permit blood vessels and fibrous tissue to extend therethrough. The first and second chambers are both disposable in a collapsed state and in an expanded state.

Inventors

LIEBELT, JOHN
BOYLAN, Clinton

Assignees

Spineology, Inc.

Dates

Publication Date: 20260506
Application Date: 20240628

Claims (1)

1577-0001-1 What is claimed: 1. A multi-chamber spinal implant, comprising: a first chamber defined by a first wall having a first interior surface, a first exterior surface, and a first wall thickness disposed between the first interior surface and the first exterior surface, wherein the first chamber has a first interior cavity that is defined by the first interior surface, and wherein the first wall has a first porosity; and a second chamber defined by a second wall having a second interior surface, a second exterior surface, and a second wall thickness disposed between the second interior surface and the second exterior surface, wherein the second chamber has a second interior cavity that is defined by the second interior surface, and wherein the second wall has a second porosity; wherein the first porosity is configured to permit passage of fluids through the first wall thickness and permit first blood vessels and first fibrous tissue to extend through the first wall thickness, and the second porosity is configured to permit passage of said fluids through the second wall thickness and permit second blood vessels and second fibrous tissue to extend through the second wall thickness; and wherein the first chamber and the second chamber are both disposable in a collapsed state and in an expanded state. 2. The multi-chamber spinal implant of claim 1, further comprising a passage extending between the first chamber and the second chamber, wherein the passage is configured to permit the passage of a fill material between the first chamber and the second chamber. 3. The multi-chamber spinal implant of claim 2, further comprising a waist disposed between the first chamber and the second chamber, and the passage extends through the waist. 4. The multi-chamber spinal implant of claim 3, wherein in a fully expanded state of the first chamber, the first interior cavity has a first volume, and in a fully expanded state of the second chamber, the second interior cavity has a second volume, and the second volume is greater than the first volume. 1577-0001-1 5. The multi-chamber spinal implant of claim 3, wherein in a fully expanded state of the first chamber, the first interior cavity has a first volume, and in a fully expanded state of the second chamber, the second interior cavity has a second volume, and the second volume equals the first volume. 6. The multi-chamber spinal implant of claim 1, wherein the first chamber and the second chamber are independent of one another and are configured to not permit passage of a fill material between the first chamber and the second chamber. 7. A multi-chamber spinal implant system, comprising: a fill material; and a multi-chamber spinal implant, that includes: a plurality of chambers, including a first chamber and a second chamber; wherein the first chamber is defined by a first wall having a first interior surface, a first exterior surface, and a first wall thickness disposed between the first interior surface and the first exterior surface, wherein the first chamber has a first interior cavity that is defined by the first interior surface, and wherein the first wall has a first porosity; and wherein the second chamber is defined by a second wall having a second interior surface, a second exterior surface, and a second wall thickness disposed between the second interior surface and the second exterior surface, wherein the second chamber has a second interior cavity that is defined by the second interior surface, and wherein the second wall has a second porosity; wherein the first porosity is configured to permit passage of fluids through the first wall thickness and permit first blood vessels and first fibrous tissue to extend through the first wall thickness, and the second porosity is configured to permit passage of said fluids through the second wall thickness and permit second blood vessels and second fibrous tissue to extend through the second wall thickness; and wherein the first chamber and the second chamber are both disposable in a collapsed state and in an expanded state. 1577-0001-1 8. The multi-chamber spinal implant system of claim 7, further comprising a passage extending between the first chamber and the second chamber, wherein the passage is configured to permit the passage of the fill material between the first chamber and the second chamber. 9. The multi-chamber spinal implant system of claim 8, wherein in a fully expanded state of the first chamber, the first interior cavity has a first volume, and in a fully expanded state of the second chamber, the second interior cavity has a second volume, and the second volume is greater than the first volume. 10. The multi-chamber spinal implant system of claim 8, wherein in a fully expanded state of the first chamber, the first interior cavity has a first volume, and in a fully expanded state of the second chamber, the second interior cavity has a second volume, and the second volume equals the first volume. 11. The multi-chamber spinal implant system of claim 1, wherein the first chamber and the second chamber are independent of one another and are configured to not permit passage of a fill material between the first chamber and the second chamber. 12. A method of reorienting a superior vertebrae and an inferior vertebrae relative to one another, wherein the superior vertebrae and an inferior vertebrae are initially disposed at an initial orientation relative to one another, the method comprising: providing a multi-chamber spinal implant having: a first chamber defined by a first wall having a first interior surface, a first exterior surface, and a first wall thickness disposed between the first interior surface and the first exterior surface, wherein the first chamber has a first interior cavity that is defined by the first interior surface, and wherein the first wall has a first porosity; and a second chamber defined by a second wall having a second interior surface, a second exterior surface, and a second wall thickness disposed between the second interior surface and the second exterior surface, wherein the second chamber has a second interior 1577-0001-1 cavity that is defined by the second interior surface, and wherein the second wall has a second porosity; wherein the first porosity is configured to permit passage of fluids through the first wall thickness and permit first blood vessels and first fibrous tissue to extend through the first wall thickness, and the second porosity is configured to permit passage of said fluids through the second wall thickness and permit second blood vessels and second fibrous tissue to extend through the second wall thickness; and wherein the first chamber and the second chamber are both disposable in a collapsed state and in an expanded state; disposing the multi-chamber spinal implant, with the first chamber and the second chamber disposed in the collapsed state, into a cavity disposed within a disc disposed between the superior vertebrae and the inferior vertebrae; reorienting the superior vertebrae and the inferior vertebrae relative to one another from the initial orientation to a second orientation by inserting a first fill material into the first chamber in an amount that changes the first chamber from a first collapsed state to a first expanded state, and inserting a second fill material into the second chamber in an amount that changes the second chamber from a second collapsed state to a second expanded state. 13. The method of claim 12, wherein the step of disposing the multi-chamber spinal implant into the cavity includes positioning the multi-chamber spinal implant so the first chamber is disposed in an anterior position within the cavity and the second chamber is disposed in an posterior position within the cavity. 14. The method of claim 13, wherein the first chamber expanded state is not a first chamber fully expanded state, or the second chamber expanded state is not a second chamber fully expanded state, or both. 15. The method of claim 13, wherein in the initial orientation, the superior vertebrae and the inferior vertebrae are disposed at a first segmentation angle and in the second orientation, the superior vertebrae and the inferior vertebrae are disposed at a second segmentation angle, and the second segmentation angle is greater than the first segmentation angle. 1577-0001-1 16. The method of claim 15, wherein in the initial orientation, the superior vertebrae and the inferior vertebrae are spaced apart from one another by a first distance and in the second orientation, the superior vertebrae and the inferior vertebrae are spaced apart from one another by a second distance, and the second distance is greater than the first distance. 17. The method of claim 16, wherein the first fill material is the same as the second fill material; and wherein the multi-chamber spinal implant includes a passage that extends between the first chamber and the second chamber, wherein the passage is configured to permit at least one of passage of the first fill material from the first chamber into the second chamber, or passage of the second fill material from the second chamber into the first chamber. 18. The method of claim 16, wherein in a first chamber fully expanded state, the first interior cavity has a first volume, and in a second chamber fully expanded state, the second interior cavity has a second volume, and the second volume is greater than the first volume. 19. The method of claim 12, wherein the step of disposing the multi-chamber spinal implant into the cavity includes positioning the multi-chamber spinal implant so the first chamber is disposed in a first lateral side position within the cavity and the second chamber is disposed in a second lateral side position within the cavity, and the first lateral side position is opposite the second lateral side position. 20. The method of claim 12, wherein the first chamber and the second chamber are independent of one another and are configured to not permit passage of first fill material or second fill material between the first chamber and the second chamber.

Description

1577-0001-1 MULTI-CHAMBER SPINAL IMPLANT DEVICE AND METHOD FOR USING THE SAME BACKGROUND OF THE INVENTION 1. Technical Field [0001] The present invention generally relates to implantable devices used in orthopedic surgeries, and more particularly to devices and methods used in spinal interbody fusion procedures. 2. Background Information [0002] A spinal disc consists of three parts: a nucleus pulposis (the “nucleus”) which is a central portion that functions as a compression-resisting cushion, an annulus fibrosis (the “annulus”) which is a peripheral portion that functions as a tension-resisting hoop, and third the cartilaginous end plates (the “end plates”) that form the superior and inferior borders of the disc, consisting of the upper and lower surfaces of the vertebral body bones adjacent to the disc. Many studies have concluded that mechanical back pain is the most common and costly musculoskeletal condition affecting aging humans in modern societies. Mechanical back pain may be caused by several factors, but overwhelming evidence suggests that degeneration of the spinal intervertebral disc, such as may be caused by degenerative disc disease (DDD) is the most common condition causing stenosis, radiculopathy, and instability, any of which may lead to symptoms such as back and radiating limb pain. [0003] Many devices have been invented for the purpose of easing the pain associated with degenerative disc disease. There is, however, a continuing need to provide improved devices adapted for treatment of degenerative disc disease. SUMMARY [0004] According to an aspect of the present disclosure, a multi-chamber spinal implant is provided that includes a first chamber and a second chamber. The first chamber is defined by a first wall having a first interior surface, a first exterior surface, and a first wall thickness disposed between the first interior surface and the first exterior surface. The first chamber has a first interior cavity defined by the first interior surface, and the first wall has a first porosity. The second chamber is defined by a second wall having a second interior surface, a second exterior 1577-0001-1 surface, and a second wall thickness disposed between the second interior surface and the second exterior surface. The second chamber has a second interior cavity defined by the second interior surface, and the second wall has a second porosity. The first porosity is configured to permit passage of fluids through the first wall thickness and to permit first blood vessels and first fibrous tissue to extend through the first wall thickness. The second porosity is configured to permit passage of fluids through the second wall thickness and to permit second blood vessels and second fibrous tissue to extend through the second wall thickness. The first and second chambers are both disposable in a collapsed state and in an expanded state. [0005] In any of the aspects or embodiments described above and herein, the spinal implant may further include a passage extending between the first chamber and the second chamber, wherein the passage is configured to permit the passage of a fill material between the first chamber and the second chamber. [0006] In any of the aspects or embodiments described above and herein, the spinal implant may include a waist disposed between the first chamber and the second chamber, and the passage may extend through the waist. [0007] In any of the aspects or embodiments described above and herein, in a fully expanded state of the first chamber, the first interior cavity has a first volume, and in a fully expanded state of the second chamber, the second interior cavity has a second volume, and the second volume may be greater than the first volume. [0008] In any of the aspects or embodiments described above and herein, in a fully expanded state of the first chamber, the first interior cavity has a first volume, and in a fully expanded state of the second chamber, the second interior cavity has a second volume, and the second volume may equal the first volume. [0009] In any of the aspects or embodiments described above and herein, the first chamber and the second chamber may be independent of one another and may be configured to not permit passage of a fill material between the first chamber and the second chamber. [0010] According to an aspect of the present disclosure, a multi-chamber spinal implant system is provided that includes a fill material and a multi-chamber spinal implant. The implant includes a plurality of chambers, including a first chamber and a second chamber. The first chamber is defined by a first wall having a first interior surface, a first exterior surface, and a first wall thickness disposed between the first interior surface and the first exterior surface. The 1577-0001-1 first chamber has a first interior cavity that is defined by the first interior surface, and the first wall has a first porosity. The second chamber is defined by a second wall h