Devices and methods for use in performing transmyocardial coronary bypass
Devices and methods utilized in performing transmyocardial coronary bypass include retractors used to engage and support myocardial tissue, and mechanisms for supporting coronary vessels so as to allow precise entry into a vessel lumen. In addition, various conduits are provided having a configuration that permits their positioning in a heart wall to place a coronary vessel in communication with a heart chamber.
1. A method for placing a generally funnel-shaped conduit in a wall of a patient's heart to communicate a heart chamber with an interior of a coronary vessel located near the exterior of the heart, the method comprising steps of: (a) providing a conduit having a length, a first end, and a second end, wherein the conduit is generally straight and the second end has a larger cross-section than the first end, as measured at exterior and interior surfaces thereof, such that the conduit is generally funnel-shaped; (b) positioning the conduit in the wall of the heart to communicate the heart chamber with the interior of the coronary vessel; and (c) orienting the conduit in the wall of the heart such that the first end is disposed adjacent the coronary vessel and the second end is disposed adjacent the heart chamber.