| 摘要 |
A percutaneous trans-endocardial reperfusion catheter, and a method of using the same, is provided for the treatment of acute myocardial ischemia. The catheter includes a compressive, ferromagnetic, and electrically conductive tip which is used with an external magnetic device to anchor the catheter tip in a desired position. Needles are movably mounted within the catheter to extend through exit ports formed therein near the catheter's distal end. When extended, the needles protrude beyond the ferromagnetic tip. With the ferromagnetic tip anchored in the myocardium, the needles may be extended to penetrate the tissue to form channels. One or more of the needles may have a hollow channel and holes formed therein for the delivery of drugs, blood, or other fluids directly into the tissue in which the needle is imbedded. An electrode positioned at the catheter tip may be used to detect electrical signals and to provide electrical therapy.
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