Warsaw Orthopedic, Inc.

James Douglas Schwender

William Alan Rezach

Michael S Veldman

Joseph H Perra

Ensor Transfeldt

Manuel Pinto

Timothy A Garvey

Francis Denis

Jason A Edie

Steven D DeRidder

T Andrew Simonton

Christopher I Shaffrey

Alan Rezach

Ensor E Transfeldt

Manuel R Pinto

Ensor E Tranfeldt

A bone screw comprises a threaded shank including a distal end portion and a proximal end portion, and defining a first threaded section extending from the distal end portion toward the proximal end portion and adapted for anchoring in cancellous bone. A second threaded section extends contiguously from the first threaded section toward the proximal end portion The second threaded section has a finer thread pattern relative to the first threaded section. In one embodiment, the first threaded section includes a first helical threading defining a single lead thread pattern for anchoring in cancellous bone, and the second threaded section includes a second helical threading interleaved with the first threading to define a duel lead thread pattern for engagement in cortical bone. In a further embodiment, the bone screw includes a head portion extending from the threaded shank and configured for coupling to a spinal implant.

Multi-thread bone screw and method

Intervertebral implants configured to engage with an insertion device for insertion between first and second vertebral members. The implants may include a body with a sidewall that forms an interior space. An opening may extend through the sidewall and into the interior space. Receptacles may be positioned at the opening and include an inlet to receive the insertion device.

Adjustable insertion device for a vertebral implant

A bone screw comprising a threaded shank including a distal end portion and a proximal end portion, and defining a first threaded section extending from the distal end portion toward the proximal end portion and adapted for anchoring in cancellous bone, and a second threaded section extending contiguously from the first threaded section toward the proximal end portion and adapted for engagement in cortical bone, with the second threaded section having a finer thread pattern relative to the first threaded section. In one embodiment, the first threaded section includes a first helical threading defining a single lead thread pattern for anchoring in cancellous bone, and the second threaded section includes a second helical threading interleaved with the first threading to define a duel lead thread pattern for engagement in cortical bone. In a further embodiment, the bone screw includes a head portion extending from the threaded shank and configured for coupling to a spinal implant.

Methods and devices for connecting an insertion device to an implant. The insertion device includes a body having first and second ends. The first end may be configured to connect with the implant. The first end may be selectively positionable between orientations to provide for the connection. Methods of positioning the implant within the patient generally include connecting the insertion device to the implant. The insertion device can then be manipulating to position the implant within the patient. The insertion device is removed from the implant once positioned, or may be reconnected at another location to further position the implant.

An implant for placing in the spine is disclosed. The implant has a tool engaging surface on its trailing end configured for intimate engagement with an insertion tool. The insertion tool configuration is particularly suited for implants made of brittle materials including bone and bone substitutes. Also disclosed is an insertion tool having a gripping end adapted for intimate engagement with an implant. In one embodiment, the insertion tool is operable by axial movement of one gripping arm with respect to the other.

Intervertebral spacer and insertion tool

An orthopedic implant is disclosed having at least one passage for an elongated member that is compressible. In certain embodiments, multiple compressible elongated member passages may be provided, or an elongated member passage may be U-shaped and closable by a closure member. Split ring members may be provided in compressible passages and around elongated members. A bone anchor may be connected to the implant so that locking the anchor to the implant compresses one or more of the elongated member passages.

Growing community of inventors

Edina, MN, United States of America

James Douglas Schwender