Bone plates and associated screws

US11039865B2 · kind B2 · utility

Assignee

• Stryker European Operations Limited · IE

Inventors

• Manoj Kumar Singh · Mahwah, US
• Subash K. Mannanal · Mahwah, US
• Robert Dominik · Lausanne, CH
• Pierre-Luc Sylvestre · Grenchen, CH
• Andreas Wiederkehr · Bienne, CH

Key dates

• Filing date: Mar 1, 2019
• Grant date: Jun 22, 2021
• Expiry date: Sep 23, 2039

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B17/8605
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A bone plate includes a bone-contacting surface, an upper surface opposite the bone-contacting surface, and a hole having a circumference and extending from the upper surface to the bone-contacting surface. The hole includes a first portion having a plurality of substantially parallel lips, each lip extends around the circumference of the hole and defines a diameter of the hole. The diameters of the hole, as defined by the lips, decrease in a direction from the upper surface to a center of the hole and increase in a direction from the center of the hole toward the bone-contacting surface.