THORACOSCOPIC TRANSMYOCARDIAL REVASCULARIZATION HANDPIECE ASSEMBLY

摘要

A thoracoscopic transmyocardial revascularization handpiece assembly (20) for a medical laser system (12) includes an elongate barrel (22) having a narrow width sized to fit between the ribs of a patient and having a first passage therethrough; an elongate handpiece (24) extending from the barrel (22) and having a similarly narrow width commensurate with the barrel (22) and having a second passage therethrough; and a contacting surface (32) on the distal end of the handpiece (24) for contacting the wall of the patient's heart; the contacting surface (32) having a width in a first dimension which is approximately that of the handpiece (24) and having a width in a second dimension which is larger than the cross-sectional area of the handpiece (24); an aperture in the contacting surface (32) communicating with the second passage for transmitting the laser beam (31); and focusing means (30) in the barrel (22) for focusing the laser beam (31) proximate to the aperture.