Apparatus and method to access bone marrow

摘要

An apparatus and method for penetrating bone marrow is provided. The apparatus may include a housing such as a handheld body, a penetrator assembly, a connector that releasably attaches the penetrator assembly to a drill shaft, a gear mechanism, a motor and a power supply and associated circuitry operable to power the motor. The penetrator assembly may include a removable inner trocar and an outer penetrator or needle. It may also include a grooved trocar that allows bone chips to be expelled as the apparatus is inserted into bone marrow. Various connectors are provided to attach the penetrator assembly to the drill shaft.

主权项

1. An apparatus for penetrating a bone marrow comprising:
a housing; a penetrator assembly having a removable inner trocar including a cutting tip and an outer penetrator, the removable inner trocar and the outer penetrator configured to penetrate the bone marrow; a connector configured to releasably attach the penetrator assembly to a drill shaft exiting from the housing; the connector engaging the drill shaft with the removable inner trocar; the drill shaft connected to a gear assembly; the gear assembly configured to rotate the drill shaft; a motor configured to engage the gear assembly and drive the penetrator assembly into the bone marrow by rotation of the drill shaft; a power supply and associated circuitry configured to power the motor; a luer lock connector releasably engaging the removable inner trocar with the outer penetrator; and the luer lock connector configured to connect the outer penetrator with an intravenous tubing.