Polyaxial bone screw
US11304732B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 24, 2020 |
| Grant date | Apr 19, 2022 |
| Priority date | — |
| Expiry date | Sep 24, 2040 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/00867
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A bone screw assembly includes a fastener including a shaft and a head disposed on the shaft. The fastener is configured to be anchored within a subject's bone. A receiving assembly is configured to be movably mounted on the head of the fastener. The receiving assembly includes a receiver disposable around at least a portion of the head of the fastener and defining a channel for receiving a rod member therein. A retaining ring is disposed within the receiver for holding the head of the fastener in the receiver. An insert is disposed in the receiver above the retaining ring. A saddle is disposed in the receiver above the insert. The saddle defines a cradle for seating the rod member in the receiver.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.