Traction device for medical use
US6467713B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 31, 2000 |
| Grant date | Oct 22, 2002 |
| Priority date | — |
| Expiry date | Oct 31, 2020 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61H1/0218
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A traction device has a casing, a drum mounted in the casing for undergoing rotation, and a traction rope having a first end connected to the drum and a second end extending through an opening in the casing. A roller is disposed in the casing for guiding the traction rope and a biasing member for resiliently biasing the traction rope onto the roller. A spring has a first end connected to the drum for urging the drum in a direction of rewinding the traction rope on the drum. A rope coupling is connected to the second end of the traction rope for preventing the second end of the traction rope from passing through the opening of the casing. A tension meter is disposed between the traction rope and the rope coupling for measuring a tension of the traction rope. A shaft is supported by the casing for undergoing rotation relative to the drum and is connected to a second end of the spring. A ratchet mechanism rotates the shaft to apply an initial load to the spring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.