INTRAOSSEOUS DEVICE COUPLERS, DRIVERS, KITS, AND METHODS
FIG2 depicts a cross-sectional side view of one embodiment of the present drivers
Metallic disc 170 may be disposed within opening 186 for use in releasably attaching connector 150c with a magnet disposed on a driveshaft (e.g., driveshaft 222 of driver 200 shown in FIG2), such as, for example, on end of the driveshaft (e.g., end 224 of driveshaft 222). End 122 of inner penetrator 120c may be spaced from metallic disc 170 with insulating or electrically nonconductive material disposed therebetween. In other embodiments, disc 170 can be magnetic or magnetized to be attracted to a driveshaft (e.g., 222) that is metallic). Tip 111c of outer penetrator 110c and/or tip 121 of inner penetrator 120c may be operable to penetrate bone and associated bone marrow. The configuration of tips 111c and/or 121 may be selected to penetrate a bone or other body cavities with minimal trauma. First end or tip 121 of inner penetrator 120c may be trapezoid shaped and may include one or more cutting surfaces. In one embodiment outer penetrator 110c and inner penetrator 120c may be ground together as one unit during an associated manufacturing process. Providing a matching fit allows respective tips 111c and 121 to act as a single drilling unit which facilitates insertion and minimizes damage as portions of penetrator assembly 100c are inserted into a bone and associated bone marrow. Outer penetrator 110c and/or inner penetrator 120c may be formed from stainless steel, titanium or other materials of suitable strength and durability to penetrate bone. FIG2 depicts a cross-sectional view of one embodiment of a driver that can be used with embodiments of the present drivers, coupler assemblies, and kits. In the embodiment shown, powered driver 200 may be used to insert one of the present intraosseous devices into a bone and associated bone marrow. Powered driver 200 may include housing 210 having a general configuration similar to a small pistol defined in part by handle 214. Various components associated with powered driver 200 may be disposed within housing 210 (e.g., handle 214). For example a power source such as battery pack 216 may be disposed within handle 214. Housing 210 may be formed from relatively strong, heavy duty polymeric materials such as polycarbonate or other satisfactory materials. For some applications housing 210 may be formed in two halves (not expressly shown) which may be joined together with a fluid tight seal to protect various components of powered driver 200 disposed therein.
cross-sectional view
210
housing
218
motor
158
threads
136
webs
151
first end
152
second end
138
openings
190
longitudinal ridges
246
contact switch releasing trigger
200
driver
170
disc
['1. A coupler comprising: a sleeve having a distal portion and a proximal portion; where the distal portion of the sleeve is configured to be coupled to a hub of an intraosseous device; where the proximal portion of the sleeve is configured to be coupled to a driver comprising a driveshaft and a housing, the housing having a body portion and a shroud portion, the shroud portion including a projection extending from a sidewall and away from the driveshaft; and where the proximal portion of the sleeve comprises a slot operable to lock the sleeve relative to the driver by seating the projection of the driver.', '9. The coupler of any one of claims 7-8, where the intraosseous device comprises an elongated hub assembly having a first end with a circular cross-section sized to correspond to that of the opening at the distal portion of the sleeve.']