Polyaxial bottom-loading screw and rod assembly
US10709479B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 26, 2018 |
| Grant date | Jul 14, 2020 |
| Priority date | — |
| Expiry date | Nov 26, 2038 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/681
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An anchor assembly for use in spinal fixation to interconnect a longitudinal spinal rod, which is integrally formed with a body of the anchor assembly. The anchor assembly includes a bone anchor, a collet, a body portion, a rod portion, and a locking cap. The anchor assembly is preferably configured so that in use, the bone anchor may be secured to the patient's vertebra prior to being received within the body portion. The anchor assembly enables a surgeon to implant the bone anchor without the body portion to maximize visibility and access around the anchoring site. Once the bone anchor has been secured to the patient's vertebra, the rod portion may be inserted into the rod-receiving channel of a second bone fixation element having a rod-receiving channel implanted at a second site and the body portion can be snapped-onto the bone anchor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.