Spinal fusion implant

Patent metadata

Field	Value
Publication number	US-11872143-B2
Application number	US-201916565003-A
Country	US
Kind code	B2
Filing date	Sep 9, 2019
Priority date	Oct 25, 2016
Publication date	Jan 16, 2024
Grant date	Jan 16, 2024

Abstract

An implant includes a housing; a blade having a retracted position in the housing and an extended position where the blade extends outwardly from the housing; and a blade actuating component comprising a driven shaft portion and a blade engaging portion. The blade actuating component can move the blade between the retracted position and the extended position. In addition, the blade engaging portion of the blade actuating component has a substantially U-shaped configuration defined at least in part by a superior surface and an inferior surface. Also, when the blade is in the extended position, the superior surface of the blade engaging portion of the blade actuating component is substantially flush with a superior surface of the housing, and the inferior surface of the blade engaging portion of the blade actuating component is substantially flush with an inferior surface of the housing.

First claim

What is claimed is:

1. An implant, comprising:
a housing;
a blade having a retracted position in the housing and an extended position where the blade extends outwardly from the housing; and
a blade actuating component comprising a driven shaft portion and a blade engaging portion, the driven shaft portion of the blade actuating component having a driven end;
wherein the blade actuating component can move the blade between the retracted position and the extended position;
wherein the blade engaging portion of the blade actuating component has a substantially U-shaped configuration defined at least in part by a superior surface and an inferior surface;
wherein, when the blade is in the extended position, the superior surface of the blade engaging portion of the blade actuating component is substantially flush with a superior surface of the housing, and the inferior surface of the blade engaging portion of the blade actuating component is substantially flush with an inferior surface of the housing; and
wherein, when the blade is in the extended position, the driven end of the blade actuating component is disposed inside of the housing.

2. The implant according to claim 1 , wherein the superior surface and the inferior surface of the blade actuating component are oriented generally at an angle with respect to one another to align with a lordotic angle of the implant.

3. The implant according to claim 1 , wherein the superior surface and the inferior surface of the blade actuating component are disposed internal to an outer envelope of the implant when the blade is in the retracted position.

4. The implant according to claim 1 , wherein a distal end of the blade actuating component is flush with an outer posterior surface of the implant when the blade is in the extended position.

5. The implant according to claim 1 , wherein the driven end is disposed outside of the housing when the blade is in the retracted position, and wherein the blade transitions from the retracted position to the extended position when a force is applied to the driven end.

6. An implant, comprising:
a housing;
a blade having a retracted position in the housing and an extended position where the blade extends outwardly from the housing; and
a blade actuating component comprising a driven shaft portion and a blade engaging portion, the driven shaft portion of the blade actuating component having a driven end;
wherein the blade actuating component can move the blade between the retracted position and the extended position;
wherein a posterior side of the housing includes a posterior opening extending between a first end portion of the housing and a second end portion of the housing;
wherein the posterior opening of the housing is configured to receive a distal end of the blade actuating component; and
wherein, when the blade is in the extended position, the driven end of the blade actuating component is disposed inside of the housing.

7. The implant according to claim 6 , wherein the posterior opening is a substantially vertically oriented slot.

8. The implant according to claim 7 , wherein the slot extends completely through the posterior side of the housing, such that the housing is discontinuous.

9. The implant according to claim 6 , further including a cover configured to be attached to the housing and bridge across the posterior opening.

10. The implant according to claim 9 , wherein the posterior side of the housing includes a first recess configured to receive a portion of the cover.

11. The implant according to claim 10 , further including a pair of pins securing the cover in the recess of the housing.

12. The implant according to claim 6 , wherein the driven end is disposed outside of the housing when the blade is in the retracted position, and wherein the blade transitions from the retracted position to the extended position when a force is applied to the driven end.

Assignees

• Inst Musculoskeletal Science & Education Ltd
• Camber Spine Tech Llc

Inventors

• Sack James A

Classifications

• A61F2/4611 Primary

  of spinal prostheses · CPC title

• A61F2/4455

  for the fusion of spinal bodies, e.g. intervertebral fusion of adjacent spinal bodies, e.g. fusion cages (intervertebral discs A61F2/442) · CPC title

• A61F2/4465

  having a circular or kidney shaped cross-section substantially perpendicular to the axis of the spine · CPC title

• A61F2002/3039

  with possibility of relative movement of the rib within the groove · CPC title

• A61F2002/3093

  for promoting ingrowth of bone tissue · CPC title