A novel videoscope and tool kit for percutaneous pericardial access under direct visualization.

"Declarations Ethics approval and consent to participateThe experiments in this study were approved by the institutional animal care and use committees at Nationwide Children’s Hospital (IACUC AR20-00155) and Children’s National Hospital (IACUC 30442). Consent for publicationNot applicable. Competing interestsJustin Opfermann, Paige Mass, Dr. Charles Berul, and Dr. Rohan Kumthekar are inventors of the tool kit described in this paper. Justin Opfermann, Paige Mass, Dr. Charles Berul, Dr. Axel Krieger, and Dr. Rohan Kumthekar are members of and hold Shares of Stock Options in PeriCor, LLC. The results of the study discussed in this publication could affect the value of PeriCor, LLC. This arrangement has been reviewed and approved by the Johns Hopkins University in accordance with its conflict-of-interest policies. Competing interests Justin Opfermann, Paige Mass, Dr. Charles Berul, and Dr. Rohan Kumthekar are inventors of the tool kit described in this paper. Justin Opfermann, Paige Mass, Dr. Charles Berul, Dr. Axel Krieger, and Dr. Rohan Kumthekar are members of and hold Shares of Stock Options in PeriCor, LLC. The results of the study discussed in this publication could affect the value of PeriCor, LLC. This arrangement has been reviewed and approved by the Johns Hopkins University in accordance with its conflict-of-interest policies."

"Funding This work was supported by two research grants, the Paul C. Gillette Grant from the Pediatric and Congenital Electrophysiology Society (PACES) and the Children’s Heart Foundation Research Fellowship Award from the American Academy of Pediatrics (AAP). This work was also supported in part by the Team Trace Foundation and Van Metre Companies Professorship."