| 摘要 |
<p>A method and system for obtaining access to the pericardial space (24) of a mammal for performing medical operations therein is disclosed which includes means (34) for distending the pericardium from the heart by injecting a small volume of fluid into the pericardium. A needle (28) having a lumen therethrough is inserted from a sub-xiphoid or other percutaneous position into the body tissue until a tip thereof punctures the distended pericardium at a selected location. A guide wire (36) is inserted into the pericardium through the lumen of the needle (28) and while the guide wire remains in the pericardial space, the needle is removed. A sheath is introduced over the guide wire, with the aid of a dilator, and inserted into the tissue until one end thereof is positioned within the pericardium. The sheath provides an access channel into the intracardial space (24) for medical operations. Different medical operations could include insertion of pacemaker or defribillator electrodes, mapping devices, ablation devices, scopes or combinations thereof. Access can also be for diagnosis such as fluid and/or tissue sampling, and can also be for medication installation.</p> |
