Systems and methods for visualizing ablated tissue

摘要

Systems and methods for visualizing ablated tissue are disclosed. In some embodiments, a system for imaging tissue comprising: a catheter having a distal end and a proximal end; an inflatable balloon disposed about the distal end of the catheter; and an optical housing extending from the distal end of the catheter into the balloon, the optical housing being configured to position inside the balloon a light source for illuminating a tissue outside the balloon and a camera for imaging the illuminated tissue.

主权项

1. A system for imaging endocardial tissue comprising:
an endovascular catheter having a distal end and a proximal end, the endovascular catheter being sized for an endovascular approach to an endocardial tissue; an inflatable balloon disposed about the distal end of the endovascular catheter, the balloon being made of a compliant ultraviolet (UV) light transparent material and shaped for placement against the endocardial tissue; a guidewire for guiding the endovascular catheter to the endocardial tissue; an ablation member disposed outside the balloon for ablation of a portion of the endocardial tissue; and an optical housing extending from the endovascular catheter into the balloon, the optical housing comprising a UV light source emitting light having a wavelength between about 300 nm and about 400 nm for illuminating the endocardial tissue outside the balloon to excite NADH fluorescence in the endocardial tissue and a camera for imaging the illuminated tissue, wherein the UV light source and the camera are positioned inside the balloon beyond the distal tip of the endovascular catheter.