| 摘要 |
An arterial biopsy catheter (10) for obtaining a biopsy sample from the inne r layers of an artery includes an outer tube (16) and an inner tube (22) slidingly mounted within the outer tube (16). The inn er tube (22) is formed with a closed distal end (58) having a beveled opening (60). The outer tube (16) is formed with an open distal end having a sharpened edge (40) to cut arterial material (76) in contact with the beveled opening (60) by sliding the outer tube (16) over the inner tube (22). The inner tube (22) and outer tube (16) are attached to handles (18, 24). In use, a vacuum is applied through the inside diameter of the inner tube (22) to the beveled opening (60), to draw arterial material (76) into contact wit h the beveled opening (60). The outer tube (16) is then manipulated to sever the arterial material (76) to form the biopsy sample.</ SDOAB>
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