Handle attachment for fluid delivery needle and method of use thereof

A handle configured to engage an intraosseous needle including a distal end configured for insertion into a bone and a proximal end configured to extend from the bone, the handle comprising:

• a cylindrical body portion including a distal end configured to receive a proximal end of a driving shaft engaged with the intraosseous needle, the cylindrical body portion defining a longitudinal axis of the handle;
• a flared handle portion having a width larger than a width of the cylindrical body portion, the flared handle portion including a first lobe, a second lobe, and a notch positioned between the first lobe and the second lobe, wherein the notch includes a curved surface connecting a first pair of opposing flat surfaces, the opposing flat surfaces configured to engage a second pair of opposing flat surfaces of the proximal end of the intraosseous needle while threadably engaging a component with threads of the proximal end of the intraosseous needle;
• and
• a channel extending between a proximal end of the flared handle portion and the distal end of the cylindrical body portion along the longitudinal axis.

A method for inserting a medical device into an interior of a bone, the method comprising:

• coupling a driving shaft to an intraosseous needle;
• engaging the driving shaft and a proximal end of the intraosseous needle with a channel of a handle, the handle including:
• a cylindrical body portion including a distal end configured to receive the proximal end of the intraosseous needle, and
• a flared handle portion having a width larger than a width of the cylindrical body portion, the flared handle portion including a first lobe, a second lobe, and a notch positioned between the first lobe and the second lobe;
• actuating the handle to insert the intraosseous needle into the bone;
• and
• pushing on a portion of a distal end of the driving shaft that protrudes into the notch to disengage the driving shaft from the handle.