Multi-directional steerable catheters and control handles
US6183435A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 22, 1999 |
| Grant date | Feb 6, 2001 |
| Priority date | — |
| Expiry date | Mar 22, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2025/015
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A multi-directional steerable catheter comprises a catheter body, a tip section attached to the distal end of the catheter body, and a control handle mounted at its distal end to the proximal end of the catheter body. The control handle comprises a housing having a piston chamber extending therethrough and a piston assembly having proximal and distal portions slidably mounted in the piston chamber and longitudinally movable between proximal and distal positions. The proximal portion of the piston assembly comprises a distal section comprising a plurality of notches at its proximal end, a proximal section comprising a plurality of longitudinal grooves about its entire circumference separated by dividing walls having angled distal ends, and a circumferential recess between the proximal section and distal section. The piston assembly further comprises a ring rotatably mounted on the piston assembly comprising a plurality of projections that extend radially inwardly into the circumferential recess and that are capable of being received by the longitudinal grooves. The number of projections is less than the number of longitudinal grooves. The ring further comprises a plurality of teeth …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.