Scoliosis transverse traction assembly
US4361141A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 27, 1979 |
| Grant date | Nov 30, 1982 |
| Priority date | — |
| Expiry date | Jul 27, 1999 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B17/7052
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An apparatus for the correction of scoliotic curvature of the spinal column. A Harrington distraction rod engages a concave side of the curvature of the spinal column and a Harrington compression rod engages a convex side of the curvature of the spinal column. A tensioning device engages the Harrington distraction rod and the Harrington compression rod so that the rods may be drawn toward each other or otherwise held in position with respect to each other. The tensioning device is comprised of a transverse threaded rod having a basket hook at an end thereof. The threaded rod engages the basket hook via a swivel connection which allows the transverse rod to rotate about its longitudinal axis within the basket hook. The other end of the threaded rod has a knurled end to facilitate handling. The basket hook is preferably used to engage the Harrington compression rod and has thread engagers which positively lock the basket hook onto the Harrington compression rod and prevent movement of the basket hook along the Harrington compression rod. A transverse hook for engaging the Harrington distraction rod threadably engages the transverse rod of the tensioning device. A nut is located on th…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.