Apparatus for delivering a quantity of fluid to bone marrow of a bone or providing access to remove fluids from a target site is provided. The apparatus may include a driver, a plunger operating and cartridge assembly mechanism, a cartridge assembly having a fluid reservoir and a bone penetrating ne...http://www.google.ca/patents/US8038664?utm_source=gb-gplus-sharePatent US8038664 - Apparatus and method to inject fluids into bone marrow and other target sites