Epicardial access system and methods
AssigneeBoston Scientific Medical Device Limited
InventorsJohn Paul Urbanski, Brock Miller, Rund Abou-Marie
Life of this patent
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Abstract
A method and apparatus are disclosed for a needle for gaining access to the pericardial cavity of a heart. The needle includes an elongate member (e.g. a main shaft) defining a lumen and a side-port in fluid communication with the lumen; a blunt atraumatic tip for delivering energy for puncturing tissue; and a guiding surface (e.g. a ramp) for directing a device (e.g. a guidewire) through the side-port. The method includes using the needle for tenting a pericardium and delivering energy for puncturing the pericardium, and advancing a guidewire or other device through the needle and into the pericardial cavity.
Claims20
A needle for use with a guidewire for gaining epicardial access, the needle comprising:
- an elongate member which is comprised of a metal and defines a lumen and a side-port having a proximal edge, the side-port being in fluid communication with the lumen;
- an insulation covering an outside of the elongate member wherein a blunt tip of the needle is electrically exposed to define an electrode for delivering energy for puncturing tissue, the insulation including an aperture and an insulation portion extending past the proximal edge of the side-port, wherein part of the elongate member adjacent the side-port is exposed within the aperture;
- and
- a guiding surface extending from a side wall of the elongate member opposite the side-port, the guiding surface configured to direct the guidewire from the lumen and out the side-port.
A needle for use with a guidewire for gaining epicardial access, the needle comprising:
- an elongate member which is comprised of a metal and defines a lumen and a side-port having a proximal edge, the side-port being in fluid communication with the lumen;
- an insulation covering an outside of the elongate member wherein a blunt tip of the needle is electrically exposed to define an electrode for delivering energy for puncturing tissue, the insulation including an aperture and an insulation portion extending past the proximal edge of the side-port, wherein part of the elongate member adjacent the side-port is exposed within the aperture;
- and
- a guiding surface extending from a side wall of the elongate member opposite the side-port, the guiding surface configured to direct the guidewire from the lumen and out the side-port;
- wherein a distal end of the guiding surface is beveled so as to direct the guidewire in a distal direction upon exiting the side-port.
Dependencies are inferred from the claim text.