Implant with curved bone contacting elements

Patent metadata

Field	Value
Publication number	US-11819419-B2
Application number	US-201916659011-A
Country	US
Kind code	B2
Filing date	Oct 21, 2019
Priority date	Apr 29, 2015
Publication date	Nov 21, 2023
Grant date	Nov 21, 2023

Abstract

An implant may include a body having a leading edge portion, a trailing edge portion, and an intermediate portion. The leading edge portion may include a substantially smooth surface forming a substantial majority of a leading edge surface and the trailing edge portion may include a monolithic structure including at least one receptacle configured to receive an insertion tool. The intermediate portion may include a plurality of elongate curved structural members continuously formed with at least one of the leading edge portion and the trailing edge portion. In addition, the elongate curved structural members may be configured such that the intermediate portion remains substantially rigid under compressive forces during insertion of the implant between bone surfaces of a patient. Also, the elongate curved structural members may include an elongate curved structural member extending longitudinally from the leading edge portion to the trailing edge portion and having a substantially sinusoidal configuration.

First claim

What is claimed is:

1. An implant, comprising:
a body having a leading edge portion, a trailing edge portion, and an intermediate portion extending between the leading edge portion and the trailing edge portion;
wherein the leading edge portion includes a substantially smooth surface forming a substantial majority of a leading edge surface of the leading edge portion;
wherein the intermediate portion includes a plurality of elongate curved structural members continuously formed with at least one of the leading edge portion and the trailing edge portion;
wherein the plurality of elongate curved structural members are configured such that the intermediate portion remains substantially rigid under compressive forces during insertion of the leading edge portion between bone surfaces of a patient;
wherein the plurality of elongate curved structural members include at least one elongate curved structural member extending longitudinally from the leading edge portion to the trailing edge portion of the implant and having a substantially sinusoidal configuration in which the at least one elongate curved structural member includes curved arches forming the sinusoidal configuration;
wherein the leading edge portion and the trailing edge portion extend in a first plane;
wherein the sinusoidal configuration oscillates in a second plane that is substantially perpendicular to the first plane; and
wherein the at least one elongate curved structural member has an approximately circular cross-sectional shape.

2. The implant according to claim 1 , wherein the sinusoidal configuration includes crests and valleys; and
wherein the at least one elongate curved structural member has a plurality of flattened bone contacting regions at the crests of the sinusoidal configuration.

3. The implant according to claim 2 , wherein the at least one elongate curved structural member has a plurality of flattened bone contacting regions at the valleys of the sinusoidal configuration.

4. The implant according to claim 1 , wherein the trailing edge portion includes at least one receptacle configured to receive an insertion tool; and
wherein the receptacle includes female threading configured to receive male threading on an insertion tool.

5. The implant according to claim 1 , wherein the body is substantially wedge-shaped.

6. The implant according to claim 1 , wherein the implant is configured for implantation in a sacroiliac joint.

Assignees

• Inst Musculoskeletal Science & Education Ltd

Inventors

• Hamzey Rami
• Morris Robert
• Duffield William
• Mcshane Iii Edward J
• Stauffer Megan A
• Gordon Mathew
• Nyahay Joseph M

Classifications

• A61F2/4455 Primary

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

• A61B17/7055

  connected to sacrum, pelvis or skull · CPC title

• A61B17/8095

  Wedge osteotomy devices · CPC title

• A61F2/02

  Prostheses implantable into the body · CPC title

• A61F2/30734

  Modular inserts, sleeves or augments, e.g. placed on proximal part of stem for fixation purposes or wedges for bridging a bone defect · CPC title