Cannulated continuous compression screw
US11998255B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 30, 2023 |
| Grant date | Jun 4, 2024 |
| Priority date | — |
| Expiry date | Sep 30, 2043 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/681
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A bone screw may be insertable into a bone. The bone screw may have a distal member with bone-engaging threads, a proximal member configured to slidably engage the distal member, and a tension member with a proximal end coupled to the proximal member, and a distal end coupled to the distal member such that, in response to motion of the distal member away from the proximal member, the tension member elongates and urges the distal member to move toward the proximal member. The tension member may be configured such that, at a minimum length of the bone screw, the tension member is pre-stretched so that the tension member is under tension to urge the bone screw to shorten. The bone screw may be inserted in the pre-stretched state. A pre-stretch driver may be used to tension the bone screw prior to or during insertion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.