Abstract: An apparatus for introducing a bone portal into a bone is described herein. An example apparatus for introducing portals into bone includes a stylet and a handle. The stylet is configured to support an infusion tube assembly. The infusion tube assembly comprises a bone portal. The handle is drivingly coupled to the stylet by a release mechanism. The release mechanism comprises a bone probe that, in a first configuration, extends generally parallel to the stylet. The release mechanism is operative to uncouple the driving coupling between the handle and the stylet upon axial motion of the bone probe relative to the handle. The stylet and bone probe are movable apart from one another to a second configuration.

Abstract: Apparatus are disclosed for intraosseous fluid infusion or aspiration of bone marrow of a subject. Particular apparatus include a bone portal (bone-penetrating member) comprising axially-aligned distal and proximal sections. The proximal section extends in a distal direction from a proximate end of the bone portal and the distal section extends in the distal direction from the proximate section to a distal end of the bone portal. The bone portal also comprises a fluid-transport bore extending between a proximal opening in the proximal section and a distal opening in the distal section. At least a portion of the distal section has a cross-sectional area, perimeter, diameter and/or dimension greater than that of the proximal section.

Abstract: An apparatus and method for introducing portals into bone is described herein. An example apparatus for introducing portals into bone includes a handle, a base, and a driving member. The driving member can be made to project past the base by operating the handle. The base is detachable from the handle. The apparatus also includes a guide coupled at a first end to the handle and at a second end to the base. The base is detachably coupled to the guide. A base coupling detachably coupling the base to the guide includes an actuating member movable between a coupled configuration wherein the base is coupled to the guide and an uncoupled configuration wherein the base is released from the guide. The actuating member is arranged so that motion of the handle toward the base moves the actuating member from the coupled configuration to the uncoupled configuration.

Abstract: Some introducer tools for bone portals have a handle coupled to a driving member by a force-limiting coupling. A bone portal comprising a bone-penetrating portion and a bone stop may be driven to a desired depth in bone when the force-limiting coupling allows application of force to the bone portal that is sufficient to drive the bone-penetrating portion of the portal into the bone but not sufficient to drive the bone stop significantly into the bone. Bone portals of various types are described herein. Various configurations for stylets suitable for use in introducing bone portals or otherwise penetrating bone and methods for inserting bone portals are also described herein.