Methods and apparatus for providing intra-pericardial access
First Claim
1. A system for creating pericardial access into the pericardial space through the myocardium of the heart wall from a heart chamber accessed transvenously from a skin incision and for placing a medical device or fluid in the pericardial space comprising an elongated, tubular delivery device having a delivery device lumen extending from a delivery device proximal end to a delivery device distal end and a distal fixation mechanism at the delivery device distal end adapted to be advanced into the heart chamber and fixed to the heart wall at a selected site of the heart chamber;
- an elongated pericardial access device having an access device distal tip adapted to perforate through the myocardium into the pericardial space upon advancement through the delivery device lumen; and
a dilator having a dilator lumen extending between a dilator proximal end and a dilator distal end adapted to be advanced over the elongated pericardial access device and through the myocardium to form the pericardial access.
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Accused Products
Abstract
A method and apparatus for accessing the pericardial space is provided for stable short term or long term placement of a delivery catheter or cannula having its distal-most end fixed on the endocardial surface such that a pericardial access device including a dilator and a puncturing device may be advanced through the myocardium into the pericardial space. The catheter is provided with a distal fixation member that maintains the catheter position over the myocardial pericardial access created by the access device allowing various medical instruments to be passed through the pericardial access into the pericardial space. Alternatively, the catheter may be positioned against the septal wall to access a left heart chamber via a right heart chamber.
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Citations
26 Claims
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1. A system for creating pericardial access into the pericardial space through the myocardium of the heart wall from a heart chamber accessed transvenously from a skin incision and for placing a medical device or fluid in the pericardial space comprising
an elongated, tubular delivery device having a delivery device lumen extending from a delivery device proximal end to a delivery device distal end and a distal fixation mechanism at the delivery device distal end adapted to be advanced into the heart chamber and fixed to the heart wall at a selected site of the heart chamber; -
an elongated pericardial access device having an access device distal tip adapted to perforate through the myocardium into the pericardial space upon advancement through the delivery device lumen; and
a dilator having a dilator lumen extending between a dilator proximal end and a dilator distal end adapted to be advanced over the elongated pericardial access device and through the myocardium to form the pericardial access. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 21, 22, 23, 24, 25, 26)
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12. A method of creating pericardial access into the pericardial space through the myocardium of the heart wall from a heart chamber accessed transvenously from a skin incision and for placing a medical device or fluid in the pericardial space comprising:
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advancing an elongated, tubular delivery device having a delivery device lumen extending from a delivery device proximal end to a delivery device distal end and a distal fixation mechanism at the delivery device distal end into the heart chamber;
affixing the distal fixation mechanism to the heart wall at a selected site of the heart chamber;
advancing an elongated pericardial access device having an access device distal tip adapted to perforate through the myocardium through the delivery device lumen and locating the access device distal tip at the heart wall;
advancing the access device distal tip from the delivery device lumen through the myocardium into the pericardial space; and
advancing a dilator having a dilator lumen extending between a dilator proximal end and a dilator distal end over the elongated pericardial access device to advance the dilator distal end through the myocardium to form the pericardial access. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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Specification