| 摘要 |
An arterial biopsy catheter for obtaining a biopsy sample from the inner layers of an artery includes an outer tube and an inner tube slidingly mounted within the outer tube. The inner tube is formed with a closed distal end having a beveled opening. The outer tube is formed with an open distal end having a sharpened circumferential edge adapted to cut arterial material in contact with the beveled opening by sliding the outer tube over the inner tube. The inner tube and outer tube are attached to handles for manipulation by an operator. In use, a vacuum is applied through the inside diameter of the inner tube to the beveled opening, to draw arterial material into contact with the beveled opening. The outer tube is then manipulated to sever the arterial material to form the biopsy sample. The inner and outer tubes are then withdrawn from the artery with the biopsy material held in the beveled opening.
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