Intervertebral disc replacement

US11298931B2 · kind B2 · utility

Assignee

• AGADA MEDICAL LTD. · IL

Inventors

• Amnon Yadin · Kfar Vitkin, IL
• Isador H. Lieberman · Pepper Pike, US
• Adi Dagan · Kiryat Motzkin, IL
• Yoram Fleischmann · Baqa al Gharbiyya, IL

Key dates

• Filing date: Jul 9, 2019
• Grant date: Apr 12, 2022
• Expiry date: Dec 27, 2039

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B33Y50/02
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

According to some embodiments of the invention, an intervertebral disc replacement includes a first layer having a lower surface for contacting a first vertebral bone, a second layer coupled to the first layer, the second layer comprising a plurality of compressible column springs, and a third layer coupled to the second layer, the third layer having an upper surface for contacting a second vertebral bone. Each of the plurality of compressible column springs comprises a plurality of stacked coils, and each of the plurality of stacked coils has a spring constant (K). At least one of the plurality of compressible column springs includes a first coil having a first spring constant and a second coil comprising a second spring constant, wherein the first spring constant is different from the second spring constant.