| 摘要 |
<p>A steerable direct myocardial revascularization catheter comprises a catheter body, a control handle, a tip section, and a means for deflecting the tip section by manipulation of the control handle. The catheter body has an outer wall, proximal and distal ends, and at least one lumen extending therethrough. The control handle is fixedly attached to the proximal end of the catheter body. The tip section comprises flexible tubing having proximal and distal ends and at least one lumen extending therethrough. The proximal end of the tip section is fixedly attached to the distal end of the catheter body. The catheter also comprises a tip electrode mounted at the distal end of the tip section. The tip electrode has a distal face and an optic fiber lumen therethrough. An electrode lead wire is electrically connected to the tip electrode. The lead wire extends through a lumen in the tip section, through a lumen in the catheter body and into the control handle. The catheter further comprises an optic fiber comprising a core, a metallized cladding and a protective jacket. The optic fiber has a distal end and a proximal end and extends through a lumen in the catheter body and a lumen in the tip section and into the optic fiber lumen of the tip electrode. The distal end of the optic fiber is substantially flush with the distal face of the tip electrode. <IMAGE></p> |
