Cannula with recessed hub structure

Abstract

A portable and passive safety intraosseous device to allow for direct introduction of medications, etc., within the intermedullary space of a subject patient's bone or, if needed, the removal of certain substances from such a subject patient's bone. Such a device permits direct drilling and placement of a cannula within the subject bone with access external to the subject patient's skin, permitting, as well, connection of a tube for such introduction/removal purposes. The ability to provide a passive safety unit allows for facilitated utilization in, for instance, emergency situations with the entire device provided for utilization thereof. The device includes a drilling component with a permanently attached stylet and a removable cannula, a power supply for a single drilling operation, a mechanism to draw the stylet back into the drill component after use and disengagement from the cannula, and an automatic closure that activates with the separation of the cannula.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is a continuation-in-part of pending U.S. patent application Ser. No. 16 / 125,767, filed on Sep. 10, 2018, which claims the benefit of expired U.S. Provisional Patent Application Nos. 62 / 556,397, filed on Sep. 9, 2017, and 62 / 566,498, filed on Oct. 1, 2017. The entirety of the parent application and both provisional applications are herein incorporated by reference.FIELD OF THE INVENTION[0002]The disclosure relates to a portable and passive safety intraosseous device to allow for direct introduction of medications, etc., within the intermedullary space of a subject patient's bone or, if needed, the removal of certain substances from such a subject patient's bone. Such a device permits direct drilling and placement of a cannula within the subject bone with access external to the subject patient's skin, permitting, as well, connection of a tube for such introduction / removal purposes. The ability to provide a passive safety u...

AI Technical Summary

Benefits of technology

[0010]A distinct advantage of the versatile apparatus now disclosed is the provision of a drill with stylet/cannula implement that exhibits total passive safety to avoid any potential exposure to contaminated components subsequent to application of the cannula within a target patient's bone. Another advantage includes the ability to provide a potentially disposable drill/stylet combination that accords the ability to have the entirety of the device provided as a single portable structure, thus eliminating the need to locate separate component parts prior to utilization and simplified disposal of the same. Another advantage is the ability to provide a drill component that has a proper shape that allows for facilitated manual operation for stylet/cannula introduction if needed. Yet another advantage is the ability of the stylet to be retracted back within the drill subsequent to drilling completion and detachment from the cannula. Still another advantage of the overall device and system is the potential for a sensor to determine the exact moment of entry within the intermedullary space of a subject bone, thus eliminating the possibility of such a device from entering such a space too far or not far enough, maximizing the amount of space such a device permits fluid introduction and/or removal from the subject bone. Another advantage is the ability to store the device without any electrical contacts and thus the ability to conserve battery power until utilized, with the potential, as well, to remove any such batteries easily after use for disposal thereof and placement of the remaining device portions within a proper disposal container associated with bodily fluid, and the like, contacted articles. Yet another advantage is the ability to manually activate the device for electrical connection and subsequent movement of an internally stored permanently attached stylet and combined removable needle. Still another advantage is the provision of a recessed hub on the needle with an recessed lock between the drill-attached stylet and needle. Yet another advantage is the facilitation of utilization from transport to disposal, including easily transporting such a device in a pocket or bag, removing it in total, unwrapping from a sealed package, flipping open the device with one hand, manually moving the motor/stylet/cannula sled for external access, operating the drill component to introduce the style/cannula within a subject patient's bone, upon completion, turning the device a quarter (or other degree) turn dislodging and retracting the motor/stylet back into the device with an automatic cover over the stylet point, subsequently dismantling the device for placement in a sharps container and otherwise disposal of the remainder. Still another advantage of a potential embodiment is the ability to provide a light within the device for visilibity purposes as well as a possible indicator of proper electrical connections upon engagement between the handle and barrel. Still another advantage is a potential embodiment wherein the handle portion of the device is configured to stand upright on its own and with the barrel attached and manipulated to any angle of rotation around the handle/barrel connector, and the ability of the light (or lights) to remain in operation as the device stands on its own and with the barrel rotated to different angles. Yet another advantage is the potential embodiment of the provision of a protective cap within the barrel over the motor/stylet/cannula that also functions as a extension externally to allow for sufficient space for a user to effectively grasp the cannula hub as it has penetrated a subject patient's skin and bone, and that remains extended subsequent to motor/stylet retraction as a manner of preventing full closure of the device handle back to its original stored position. Still another advantage is a potential embodiment including a protective cap with an extending tab that correlates with openings within the barrel of the device to both serve as an indicator of location of the cap (prior to and after device utilization) as well as a detent to prevent retraction of the cap upon activation of the retraction operation for the motor/stylet.

[0011]Accordingly, the inventive intraosseous device comprises a disposable drill/stylet combination, wherein said drill includes a stylet retraction port therein, a retracting mechanism attached to said stylet and disposed within said drill, and a cannula connected in detachable relation to said stylet, wherein said stylet is permanently attached to said drill, wherein said retracting mechanism operates subsequent to utilization of said drill to introduce said stylet and cannula within the intermedullary space of a subject bone, said retracting mechanism moving said stylet from an external location to said stylet retraction port within said drill subsequent to a drilling operation, and wherein said cannula is attached to said drill with a Luer lock component with a lip portion present external to said drill and an automatic closure internally within said drill that activates upon disengagement of said cannula from said drill. The external lip of the cannula also provides, if needed, a surface for a user to grab while maneuvering the drill. Also encompassed herein is the inclusion of a sensor on said stylet, wherein said sensor measures pressure subsequent to bone entry such that once passed through to said intermedullary space the pressure difference deactivates the drill and activates the retraction mechanism and detaching from said cannula. The method of utilization of such a device (with or without the sensor as described) is also encompassed herein wherein the cannula as retained within the bone and skin and accessing said intermedullary space of the subject bone allows for introduction or removal of fluid, etc., therein.

[0012]Alternatively, the overall device may be provided with an internal movable combination of a stylet and cannula that are not directly connected, but are co-connected through a rotatable base. In such a configuration, the stylet may, for instance, be integrated within such a base in that it may be permanently affixed thereto and aligned with the opening shaft of the cannula so as to egress out of the top with the tapered end available for drill purposes. The cannula may then be attached to such a base through an two or more outer arm extensions from the base that include flanges that insert and turn within complementary structures on the base of the cannula in order to allow simultaneously for temporary attachment (and detachment through turning of the internal drill device base a specific distance after drilling has been completed) and rotation of the cannula in concert with the stylet. The movable nature allows for a stationed motor and gear box within the housing of the drill device with the extendible stylet/cannula combination arranged to retain gear association with the motor and gear box (to permit such rotation for drilling results) while allowing as well for retraction of the stylet once drilling has been effectuated. In addition, an internal seal (or door) may be provided initially to ensure the internal stylet and cannula are protected from contamination prior to use; if so, such a door may be configured to move and thus open to provide an egress point through the distal end of the drill device for the stylet/cannula combination to exit for drilling to commence. At the same time, an opposing door/seal component may be primed upon such extension in order to automatically close upon retraction of the stylet after use and/or upon detachment of the cannula from the internal extendible base (and thus from the drill device itself). In this manner, the passive safety necessity is provided in an alternative manner but still as effective, if not more effective, than the prior disclosure above. The user merely activates the internal base extension to open the drill egress point for the stylet/cannula to exit, activate the motor to effectuate the gear box and extended gear shaft to rotate the stylet and cannula simultaneously for drilling within a target patient's skin and bone until entering the target intermedullary space thereof, stopping such a drilling action, rotating the drill a slight turn to disengage the cannula from the base, at which point the stylet and internal base return automatically within the drill device and the primed door/seal closes automatically as well, leaving only the cannula with its Luer lock end available for attachment with an IV line or like implement as needed for fluid, etc., introduction or material, etc., removal from the target intermedullary bone space. If further desired, the user may include the application of a disinfectant on the Luer lock tip to further ensure contamination is not an issue.

[0013]The disclosed device may alternatively include a cannula with a hub for IV or other connection/insertion (again, for medicament, drug, fluid, etc., delivery within a subject patient's bone) that itself utilizes a novel recessed attachment point, rather than an extended Luer lock tip. Such a recessed configuration would allow for

Problems solved by technology

Such a distance has been known to be rather susceptible to contact with surfaces and objects through patient movement, at least.

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