A tissue perforation device and method. The device preferably includes a housing having a housing pass-through, a penetrator securely and sealably positioned so that the penetrator device passes through the housing pass-through, and a vacuum system comprising a vacuum source securely and sealably attached...http://www.google.de/patents/US7585281?utm_source=gb-gplus-sharePatent US7585281 - Vacuum-actuated tissue perforation device for establishing pneumoperitoneum
