Sleeve augment device for an articulated joint

US11357631B2 · kind B2 · utility

Assignee

• WALDEMAR LINK GmbH & Co. KG · DE

Inventors

• Eckhard Bauer · Kiel, DE
• Helmut D. Link · Hamburg, DE

Key dates

• Filing date: Jun 24, 2016
• Grant date: Jun 14, 2022
• Expiry date: Jun 24, 2036

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61F2002/3093
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

An augment device for a joint endoprosthesis, the device including a sleeve surrounding a channel extending through the sleeve. The sleeve is formed of porous material for ingrowth of bony material, the sleeve comprising an inner face and an outer face. The sleeve further comprises a wall surrounding the channel, the wall being made of solid material and forming a sandwich structure with the porous material, wherein the wall forms a bulkhead between the inner face and the outer face. Thereby, the bulkhead wall will stop inflow of any cement across the sleeve from its inner to its outer face. The porous material on the outer face will be kept free from cement and its capability to promote bone ingrowth is reliably preserved. The augment devices are preferably provided as a set having different sizes and straight or stepped bottoms for improved versatility and maximum preservation of natural bone matter.