Francis Denis

Title: Francis Denis: Bone Screw Innovation

Introduction

Francis Denis is an inventor based in Minneapolis, Minnesota. His patent work includes orthopedic technology, particularly a bone screw designed to engage different types of bone tissue. Denis is associated with Warsaw Orthopedic, Inc., and holds 3 patents.

Latest Patents

One of Denis’s latest patents, “Multi-thread bone screw and method,” describes a screw with a threaded shank divided into two contiguous sections. The first section has a coarser thread pattern intended to anchor in cancellous bone, while the second has finer threads designed to engage cortical bone.

In one embodiment, the first section uses a single-lead helical thread, and the second adds an interleaved thread to create a dual-lead pattern. The design may also include a head configured to couple with a spinal implant. The supplied patent information describes this invention twice, with slightly different wording.

Career Highlights

Denis’s listed patent work focuses on spinal and orthopedic fixation. The multi-thread design addresses the differing anchoring needs of cancellous and cortical bone within a single screw.

Collaborations

Denis’s listed coworkers include Michael S. Veldman and William Alan Rezach. His company affiliation is Warsaw Orthopedic, Inc.

Conclusion

Francis Denis’s patent portfolio includes an orthopedic screw concept designed to provide distinct thread patterns for anchoring in different types of bone and for potential connection to a spinal implant.