Lumbar interbody fusion cage for treating lumbar spondylolisthesis via lateral approach

US10631998B2 · kind B2 · utility

Assignees

• THE SECOND AFFILIATED HOSPITAL OF WENZHOU MEDICAL UNIVERSITY · CN
• Yuying Children's Hospital of Wenzhou Medical University · CN

Inventors

• Aimin Wu · Vaughan, CA
• Xiangyang Wang · Xi'an, CN
• Yixing Huang · Zhejiang, CN
• Wenfei Ni · Zhejiang, CN
• Yan Lin · Zhejiang, CN
• Zhongke Lin · Zhejiang, CN
• Hui Xu · Lo Wu, CN

Key dates

• Filing date: Mar 28, 2018
• Grant date: Apr 28, 2020
• Expiry date: Jul 19, 2038

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61F2002/30843
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

The disclosure claims a lumbar interbody fusion cage for treating lumbar spondylolisthesis via a lateral approach. The lumbar interbody fusion cage comprises a supporting frame body, wherein upper and lower blades are mounted on the upper and lower end surfaces of the supporting frame body, a distracting component for driving the upper and lower blades to axially distract along a lumbar interbody and an orthotopic moving component for driving the upper and lower blades to move along the lumbar interbody back and forth are mounted in the supporting frame body, the upper and lower blades respectively extend to form lateral lobes, fixing holes through which fixing nails penetrate are formed on the lateral lobes, the fixing nail of the upper lateral lobe penetrates backward from bottom to top in a slanting way to give a certain rear thrust to the slipped lumbar vertebrae and help reduction of the lumbar spondylolisthesis, and the fixing nailing of the lower lateral lobe penetrates forward from top to bottom to give a forward thrust to the lumbar vertebrae and help the reduction of the lumbar spondylolisthesis. The lumbar interbody fusion cage can solve both an intervertebral spacing an…