At least some embodiments of the disclosure may advantageously limit bleeding and the occurrence of blood leaks after heart pump implantation. In some embodiments, a base may be provided that includes a flexible layer mechanically coupled with a conduit. The flexible layer may be coupled with the proximal end of the conduit. The conduit may be configured to receive a cannula of the heart pump therethrough. The outer surface of the conduit may be configured to engage a surface of the heart formed after coring the heart. The conduit may be metal and may have a flared and/or beveled distal end. The conduit may be a flexible material. A distal flexible layer may be provided at a distal end of the conduit that is configured to engage with an inner surface of the heart.