Endoscope for direct visualization of the spine and epidural space
US5396880A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 8, 1992 |
| Grant date | Mar 14, 1995 |
| Priority date | — |
| Expiry date | Apr 8, 2012 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/032
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A system for direct visualization of the spine and the epidural and/or intra-discal space to facilitate diagnosis and treatment of spinal conditions and that is adapted for percutaneous introduction into the spinal space. The system includes a disposable flexible catheter, a fiber-optic bundle disposed within the catheter which is connected to a light source and camera. The bundle is removably and adjustably connected to the proximal end of the catheter to permit rotation of the bundle relative to the catheter. A mechanism for controllably deflecting the tip of the catheter is provided to vary the viewing angle of the fiber-optic bundle within and to assist in steering the catheter through the spinal space. The mechanism includes a deflection wire extending through the catheter and affixed at the distal end thereof. The proximal end of the deflection wire is affixed to a sleeve which is slidably disposed around the catheter and within a housing. The housing includes an internal flange that defines a stop surface which is contacted by the sleeve as the catheter and deflection wire is moved in a first direction. After the sleeve contacts the stop surface, further movement of the cath…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.