| 摘要 |
The present invention relates to a visualisation device for visualising a spatial orientation of a feature, such as a constriction, inside a body lumen. In particular, the present invention relates to a visualisation device for visualising the spatial orientation of the aortic valve in the aorta for use during procedures such as, but not limited to, Transcatheter Aortic Valve Implantation (TAVI). The visualisation device comprises a distal portion that assumes a loop shape or form, extending in an axis that is transverse from the axis of the length of the device at least temporarily (e.g. when a guide wire is removed, the distal portion may assume the loop shape). In that distal portion is located a number of openings coupled to a first lumen for receiving a radiopaque material. The openings face away from the proximal end of the catheter (i.e. towards the feature to be imaged) in an axis that is generally parallel to the axis of the catheter. This configuration of openings enables a radiopaque material to be delivered to the desired site efficiently. |
