Patent ID: 8715287

Claim:
An apparatus for penetrating a bone and associated bone marrow comprising: a housing; a needle assembly, including an IO needle and a trocar, operable to penetrate the bone and associated bone marrow; a drill shaft rotatably disposed within the housing; a holding mechanism operable to releasably attach the needle assembly to the drill shaft; the holding mechanism including a chuck; the drill shaft operable to connect the needle assembly to a reduction gear assembly disposed within the housing; the reduction gear assembly operable to rotate the drill shaft; a motor disposed within the housing; the motor operable to engage the reduction gear assembly and drive the needle assembly into the bone and associated bone marrow by rotation of the drill shaft; a battery power supply and associated circuitry disposed within the housing to power the motor; and means for automatically releasing the needle assembly after the needle assembly advances to a predetermined depth in the bone and associated bone marrow.