Hd Lifesciences LLC

Nanohive Medical LLC

Spinal Innovations, LLC

Kevin D Chappuis

Jason Tinley

Ian Helmar

Lucas Diehl

John F Sullivan

Christopher L Jones

Christopher Laine

Dwight S Tyndall

Nicholas Uvanovic

Christine Emery

Christopher L Laine

The methods disclosed herein of generating three-dimensional lattice structures and reducing stress shielding have applications including use in medical implants. One method of generating a three-dimensional lattice structure can be used to generate a structure lattice and/or a lattice scaffold to support bone or tissue growth. One method of reducing stress shielding includes generating a structural lattice to provide sole mechanical spacing across an area for desired bone or tissue growth. Some examples can use a repeating modified rhombic dodecahedron or radial dodeca-rhombus unit cell. Some methods are also capable of providing a lattice structure with anisotropic properties to better suit the lattice for its intended purpose.

Methods of designing three-dimensional lattice structures for implants

The three-dimensional lattice structures disclosed herein have applications including use in medical implants. Some examples of the lattice structure are structural in that they can be used to provide structural support or mechanical spacing. In some examples, the lattice can be configured as a scaffold to support bone or tissue growth. Some examples can use a repeating modified rhombic dodecahedron or radial dodeca-rhombus unit cell. The lattice structures are also capable of providing a lattice structure with anisotropic properties to better suit the lattice for its intended purpose.

Three-dimensional lattice structures for implants

A surgical tool for use in a system for removing bone from vertebrae to relieve stenosis is provided. In one embodiment, the surgical tool includes a drill bit having a proximal end and a distal end, a drive shaft having a proximal rod portion and a distal tubular portion, the drill bit and the drive shaft configured to rotate about a horizontal axis in a clockwise direction; and an engagement system disposed between the drill bit and the drive shaft; wherein the engagement system is configured to selectively engage the drill bit to the drive shaft for powered rotation when the drill bit contacts a first material at a first predetermined resistance and to disengage the drill bit from the drive shaft when the drill bit engages a second material at a second predetermined resistance; and wherein the first predetermined resistance is greater than the second predetermined resistance.

Pressure activated surgical tool for use in spinal decompression procedures and methods of using the same

The biocompatible lattice structures disclosed herein with an increased or optimized lucency are prepared according to multiple methods of design disclosed herein. The methods allow for the design of a metallic material with sufficient strength for use in an implant and that remains radiolucent for x-ray imaging.

Methods of designing high x-ray lucency lattice structures

The biocompatible lattice structures and implants disclosed herein have an increased or optimized lucency, even when constructed from a metallic material. The lattice structures can also provide an increased or optimized lucency in a material that is not generally considered to be radiolucent. Lucency can include disparity, maximum variation in lucency properties across a structure, or dispersion, minimum variation in lucency properties across a structure. The implants and lattice structures disclosed herein may be optimized for disparity or dispersion in any desired direction. A desired direction with respect to lucency can include the anticipated x-ray viewing direction of an implant in the expected implantation orientation.

Implant with independent endplates

The variable or adjustable depth medical implants in this application are capable of depth adjustment prior to implantation. The variable depth implants permit a single implant to provide multiple footprint configurations, allowing a surgeon footprint adjustability in the operating room. The implants can comprise a metallic lattice designed for specific physical properties, such as an elastic modulus. In some examples, the main body of the implant is taller than the adjustable portion of the implant (also referred to as the second implant body) so that the physical properties of the main body of the implant are controlling at the implant site. In some embodiments, the variable implant is constructed in an additive process as a single unit.

Variable depth implants

The dynamic implant fixation plate and implant configured to accept the disclosed fixation plate can, in some aspects, provide a means of fixing an implant relative one or more planes while allowing motion relative to one or more planes. The use of the disclosed fixation plate and corresponding implant can reduce the occurrence of stress shielding and permit enhanced loading of the implant site.

Dynamic implant fixation plate

The three-dimensional lattice structures disclosed herein have applications including use in medical implants. Some examples of the lattice structure are structural in that they can be used to provide structural support or mechanical spacing. In some examples, the lattice can be configured as a scaffold to support bone or tissue growth. Some examples can use a repeating modified rhombic dodecahedron or radial dodeca-rhombus unit cell.

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Malden, MA, United States of America

Kevin D Chappuis