Half pins for external fixators
US11684399B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 22, 2022 |
| Grant date | Jun 27, 2023 |
| Priority date | — |
| Expiry date | Mar 22, 2042 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/00889
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The invention is a half pin for use in conjunction with external fixators, in which the half pin has a thin hydroxyapatite coating over a substantial portion thereof, a not-sharp hole-finding tip, and a variable pitch pattern in the threaded portion of the half pin. The hydroxyapatite coating must be thin—40-70 microns, deposited by plasma spray—and with limited porosity and pore size, and must extend not only over all the threads of the half pin but also a substantial portion of the unthreaded shaft proximal to the threaded end. The invention also includes a pin cube for use in association with the coated half pins. Wires may also be coated with the hydroxyapatite coating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.