Orthopedic screw and driver system for minimally invasive metatarsal correction procedure

WO2025240935A8PCT designated stage Publication Date: 2026-05-28TREACE MEDICAL CONCEPTS INC
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
TREACE MEDICAL CONCEPTS INC
Filing Date
2025-05-16
Publication Date
2026-05-28

AI Technical Summary

Technical Problem

Existing surgical procedures for correcting bone deformities such as hallux valgus and bunionette lack efficient and minimally invasive methods for realigning and fixating bone portions, particularly in small bones like metatarsals, with limited visibility and torque transfer issues during screw implantation.

Method used

A screw and driver system with differently sized lobes and an alignment feature, allowing for controlled positioning and torque transfer, enabling both screw-specific and hexalobular driver use, facilitating minimally invasive osteosynthesis by providing additional contact driving interference and visibility through limited skin access.

Benefits of technology

Enables precise and secure fixation of bone portions with improved torque transfer and visibility, even in minimally invasive procedures, enhancing surgical efficiency and patient outcomes.

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Abstract

A screw for osteosynthesis includes a body, a thread, and a driver receiving cavity. The body includes a proximal end and a distal end, and the body defines a central longitudinal axis that extends between the proximal end and the distal end. The thread is disposed along at least a portion of the body. The driver receiving cavity is at the proximal end of the body, and the driver receiving cavity includes at least five lobes circumferentially spaced apart from one another about the central longitudinal axis to define at least five grooves. Each one of the at least five lobes defines a different internal lobular area. The at least five grooves can be configured to receive six lobes of a hexalobular driver having equally spaced lobes.
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