Manual intraosseous device
View Patent ↗An apparatus for penetrating the bone marrow of a bone is provided. The apparatus includes a handle having a drive shaft, a connector having a first end operable to connect to a drive shaft and a second end operable to connect to a penetrator hub and a penetrator hub having a penetrator that accesses the bone marrow.
1. A method of accessing bone marrow of a bone comprising:
inserting a penetrator, defined in part by an outer cannula and an inner trocar, into the bone and associated bone marrow by a handle rotating a drive shaft and an attached connector, the connector releasably attached to a hub that is attached to the outer cannula, the hub defining a flange with a maximum transverse dimension that is greater than a maximum transverse dimension of the connector, the flange configured to contact skin adjacent the bone when the penetrator is inserted into a patient's bone, wherein the hub is attached to the outer cannula at least at a point along the flange;
detaching the handle and connector from the hub while the outer cannula is disposed in the bone and associated bone marrow; and
removing the trocar from the cannula to allow access to the bone marrow through the cannula,
wherein the flange is in fixed relation to a first end of the outer cannula, the first end of the outer cannula configured to be inserted into the bone and bone marrow,
wherein the first end of the outer cannula has a first plurality of cutting surfaces,
wherein an end of the inner trocar proximate to the first end of the outer cannula comprises a second plurality of cutting surfaces,
wherein the first plurality of cutting surfaces and the second plurality of cutting surfaces are configured to fit together to form a single drilling unit.
2. The method of claim 1 ,
wherein the connector comprises a tapered portion,
wherein the tapered portion is disposed on an exterior surface of the connector,
wherein the tapered portion comprises a plurality of longitudinal ridges.
3. The method of claim 2 , wherein the plurality of longitudinal ridges is configured to be grasped by a user to insert the penetrator into the bone and associated bone marrow.
4. The method of claim 3 , wherein the plurality of longitudinal ridges is further configured to be grasped by the user to detach the connector from the hub.
5. A method of accessing bone marrow of a bone comprising:
releasably attaching a connector, a hub, and a penetrator with a handle operable to rotate the connector, hub, and penetrator, the penetrator including an outer cannula attached to the hub, and the connector releasably coupled to the hub via a Luer fitting that includes male threads formed on the hub;
rotating the handle to rotate the connector and the penetrator to insert the penetrator into the bone and associated bone marrow;
detaching the handle and the connector from the outer cannula when one end of the outer cannula is located at a desired position within the bone marrow; and
connecting a tubing with the outer cannula via the Luer fitting to communicate fluid between the tubing and the bone marrow,
wherein the connector is attached to an inner trocar,
wherein the Luer fitting is configured to position the inner trocar at a predetermined position relative to the outer cannula,
wherein the end of the outer cannula configured to be located at the desired position within the bone marrow has a first plurality of cutting surfaces,
wherein an end of the inner trocar proximate to the end of the outer cannula configured to be located at the desired position within the bone marrow comprises a second plurality of cutting surfaces,
wherein the first plurality of cutting surfaces and the second plurality of cutting surfaces are configured to fit together to form a single drilling unit.
6. The method of claim 5 , wherein each of the first plurality of cutting surfaces fits with a respective cutting surface of the second plurality of cutting surfaces when the inner trocar is positioned at the predetermined position relative to the outer cannula.
7. The method of claim 5 ,
wherein the connector comprises a tapered portion,
wherein the tapered portion is disposed on an exterior surface of the connector,
wherein the tapered portion comprises a plurality of longitudinal ridges.
8. The method of claim 7 , wherein the plurality of longitudinal ridges is configured to be grasped by a user to insert the penetrator into the bone and associated bone marrow.
9. The method of claim 8 , wherein the plurality of longitudinal ridges is further configured to be grasped by the user to detach the connector from the outer cannula.