The present application is generally related to the technical field of intraosseous infusion, and more particularly to a device for dispensing a volume (e.g., a volume of medication or other liquid) during intraosseous infusion.
Intraosseous (TO) infusion of fluids may in some instances be painful for patients. A small volume of lidocaine may therefore be injected after insertion of an IO needle but before infusion of other fluids or medication. Such lidocaine infusion is typically performed manually by a medical professional using a syringe, which may result in uneven and/or painful infusion.
The present disclosure includes systems, methods, and apparatuses for dispensing a volume (e.g., a volume of liquid or medication) during intraosseous infusion. The various systems, methods, and apparatuses disclosed herein include various structures to control the rate at which a volume is dispensed during intraosseous infusion. Such structures are configured to provide an even dispense rate which may minimize or reduce pain caused to the patient receiving treatment. Additionally, such structures may simplify the task of performing intraosseous infusion, thereby making it easier for the medical professional to perform such a procedure.
In various embodiments, an apparatus includes a base configured to be coupled to a syringe having a body defining a reservoir and plunger slidably coupled to the body. Additionally, the apparatus includes an arm coupled to the base. A portion of the arm may be movable between an extended position and a contracted position in which the portion of the arm is closer to the base than in the extended position. The apparatus may include a resilient member coupled to base and to the arm. The resilient member may be configured to bias the portion of the arm toward the contracted position relative to the base with a force sufficient to depress the plunger of the syringe, thereby causing a volume to be dispensed from the syringe. In some embodiments, the apparatus may include a damper configured to resist movement of the portion of the arm from the extended position toward the contracted position to control a rate at which the resilient member can move the portion of the arm from the extended position toward the contracted position, thereby limiting the rate at which the volume is dispensed from the syringe. In other embodiments, the apparatus includes flow control valve coupled downstream of an output of the syringe, where the flow control valve limits the rate at which the volume is dispensed from the syringe.
An infuser or dispensing device according to the disclosed embodiments may provide a tool that may be used to dispense a volume of fluid (e.g., lidocaine or other medications) during intraosseous infusion (or another procedure) at a rate that is easily and automatically controlled (e.g., using the resilient member in connection with a damper or flow control valve), and that may be stopped or paused periodically if desired without significant disruption or hassle. Additionally, because dispensing devices configured according to the disclosed embodiments automatically control or limit the rate at which the volume is dispensed, the intraosseous infusion process may be performed more easily and with less discomfort to the patient.
The term “coupled” is defined as connected, although not necessarily directly, and not necessarily mechanically; two items that are “coupled” may be unitary with each other. The terms “a” and “an” are defined as one or more unless this disclosure explicitly requires otherwise. The term “substantially” is defined as largely but not necessarily wholly what is specified (and includes what is specified; e.g., substantially 90 degrees includes 90 degrees and substantially parallel includes parallel), as understood by a person of ordinary skill in the art. In any disclosed embodiment, the terms “substantially,” “approximately,” and “about” may be substituted with “within [a percentage] of” what is specified, where the percentage includes 0.1, 1, 5, and 10 percent.
Further, a device or system that is configured in a certain way is configured in at least that way, but it can also be configured in other ways than those specifically described.
The terms “comprise” (and any form of comprise, such as “comprises” and “comprising”), “have” (and any form of have, such as “has” and “having”), “include” (and any form of include, such as “includes” and “including”), and “contain” (and any form of contain, such as “contains” and “containing”) are open-ended linking verbs. As a result, an apparatus that “comprises,” “has,” “includes,” or “contains” one or more elements possesses those one or more elements, but is not limited to possessing only those elements. Likewise, a method that “comprises,” “has,” “includes,” or “contains” one or more steps possesses those one or more steps, but is not limited to possessing only those one or more steps.
Any embodiment of any of the apparatuses, systems, and methods can consist of or consist essentially of—rather than comprise/include/contain/have—any of the described steps, elements, and/or features. Thus, in any of the claims, the term “consisting of” or “consisting essentially of” can be substituted for any of the open-ended linking verbs recited above, in order to change the scope of a given claim from what it would otherwise be using the open-ended linking verb.
The feature or features of one embodiment may be applied to other embodiments, even though not described or illustrated, unless expressly prohibited by this disclosure or the nature of the embodiments.
Some details associated with the embodiments described above and others are described below.
The following drawings illustrate by way of example and not limitation. For the sake of brevity and clarity, every feature of a given structure is not always labeled in every figure in which that structure appears. Identical reference numbers do not necessarily indicate an identical structure. Rather, the same reference number may be used to indicate a similar feature or a feature with similar functionality, as may non-identical reference numbers. The figures are drawn to scale (unless otherwise noted), meaning the sizes of the depicted elements are accurate relative to each other for at least the embodiment depicted in the figures.
Referring to
In an embodiment, base 101 may define a channel 106 configured to prevent movement of the syringe along a length of base 101 as plunger 134 is depressed. In an additional or alternative embodiment, base 101 may include a strap 108 that may be configured to secure the syringe to base 101. In yet another additional or alternative embodiment, base 101 may include both channel 106 and strap 108. In an embodiment, base 101 may include one or more incremental stops 116. Each of the one or more incremental stops 116 may be configured to limit a distance by which the portion of arm 110 can compress plunger 134.
A portion of arm 110 may be movable between an extended position and a contracted position in which the portion of arm 110 is closer to the base than in the extended position, as described in more detail below. In an embodiment, arm 110 may include a tab 112. Tab 112 may be configured to contact the plunger and depress the plunger as the portion of arm 110 is moved towards the contracted position. In an embodiment, arm 112 may include a rotatable portion 111, and tab 112 may be located on rotatable portion 111. This enables tab 112 to be rotated (as indicated by the arrow 150 of
In an embodiment, arm 110 may include one or more locking tabs 114 configured to releasably lock the portion of arm 110 at a position corresponding to one of incremental stops 116 to prohibit further movement of the portion of arm 110 towards the contracted position. In an embodiment, each of incremental stops 116 may be configured such that a distance by which the portion of arm 110 can compress plunger 134 corresponds to dispensing of a predetermined volume from reservoir 132. For example, incremental stops 116 may be spaced such that each incremental stop 116 represents an incremental volume (e.g., a 1 milliliter (mL) volume) being dispensed from the syringe (e.g., the distance by which arm 110 can compress plunger 134 between adjacent incremental stops results in a 1 milliliter volume being dispensed from the syringe), such that upon releasing the portion of arm 110 using the one or more locking tabs 114, the portion of arm 110 will move towards the contracted position and become locked at the next adjacent incremental stop 116, resulting in 1 mL volume being dispensed from the syringe. In an additional or alternative embodiment, the distance between adjacent incremental stops 116 may not be related to a defined volume being dispensed from the syringe, and instead may simply provide a mechanism for stopping or pausing the dispensing of the volume.
Referring briefly to
In an embodiment, resilient member 144 may include a spring configured to exert a first force on arm 110, and damper 142 may include a piston configured to exert a second force on arm 110. The second force may oppose the first force to resist movement of the portion of arm 110 from the extended position toward the contracted position. The difference between the first force and the second force may be configured to limit a rate at which the portion of arm 110 depresses plunger 134.
During operation, a user (e.g., a medical professional) of the dispensing device 100 may couple base 101 to a syringe, and may extend the portion of arm 110 to the extended position, as shown in
Referring to
From the foregoing description, it has been shown that dispensing device 100 provides a tool that may be used to dispense a volume of fluid (e.g., lidocaine or other medications) during intraosseous infusion at a rate that is easily controllable, and that may be stopped or paused periodically if desired without significant disruption or hassle. Additionally, because dispensing device 100 automatically controls or limits the rate at which the fluid or volume is dispensed using the resilient member and the damper, the intraosseous infusion process may be performed more easily and with less discomfort to the patient. Further, it is noted that although described as a tool for improving intraosseous infusion, one of ordinary skill in the art would readily recognize that dispensing device 100 may be readily adapted and used for purposes other than intraosseous infusion.
Referring to
In an embodiment, the base 201 may define a channel 206 configured to prevent movement of the syringe along a length of base 201 as plunger 134 is depressed. In some embodiments, base 201 may include a strap 208 that may be configured to secure the syringe to base 201. In some embodiments, base 201 may include both channel 206 and strap 208. In some embodiments, base 201 may be configured to be coupled to a second strap 209 configured to secure base 201 to a patient's arm or leg, or to another tool or piece of equipment (not shown).
Dispensing device 200 may include a resilient member and a damper that may be housed within base 201. For example, and as shown in
A portion of arm 230 may be movable between an extended position (left side or closer to spiral torsion spring 220) and a contracted position (right side or closer to damper 228) in which the portion of the arm is closer to the base than in the extended position. The portion of arm 230 may be configured to contact the plunger to depress the plunger. The resilient member may be coupled to base 201 and to the portion of arm 230, and may be configured to bias the portion of arm 230 toward the contracted position relative to base 201 with a force sufficient to depress the plunger 134 of the syringe that is coupled to base 201. Damper 228 may be configured to resist movement of the portion of arm 230 from the extended position toward the contracted position to control a rate at which the resilient member can move the portion of arm 230 from the extended position toward the contracted position.
In an embodiment, the resilient member may include spiral torsion spring 220 coupled to rotary drive 226, and may be configured to exert a first force, and damper 228 may include a rotary damper configured to exert a second force. The second force may oppose the first force to resist movement of the portion of arm 230 from the extended position toward the contracted position. The difference between the first force and the second force may be configured to limit a rate at which the portion of arm 230 depresses plunger 134.
Clutch 212 may be configured to selectively engage spiral torsion spring 220. In an embodiment, spiral torsion spring 220 may be primed by rotating primer 210. For example, when clutch 212 is engaging spiral torsion spring 220, primer 210 may be rotated to prime (e.g., wind) spiral torsion spring 220. When clutch 212 is disengaged from the spiral torsion spring 220, spiral torsion spring 220 may begin unwinding, which rotates rotary drive 226 in a first direction and moves the portion of arm 230 along a length of rotary drive 226 with a force sufficient to depress plunger 134. To illustrate, as spiral torsion spring 220 unwinds, gear 224 may begin to rotate which causes rotary drive 226 to rotate in the first direction. As the rotary drive 226 rotates in the first direction, the portion of the arm 230 may move along the length of the rotary drive 226 (along helical threads of the rotary drive) towards the contracted position (e.g., to the right in
In an embodiment, dispensing device 200 may include a control (e.g., a button, etc.) that, when activated, may cause clutch 212 to engage or disengage spiral torsion spring 220. For example, as shown in
During operation, a user (e.g., a medical professional) of dispensing device 200 may be couple base 201 to a syringe, and may prime the resilient member, as described above. When the user desires to initiate dispensing of a volume from the syringe by activating control 214 (or control 216), which may disengage clutch 212 to enable the resilient member to bias the portion of arm 230 towards the contracted position with a force sufficient to dispense the volume from the syringe.
From the foregoing description, it has been shown that dispensing device 200 provides a tool that may be used to dispense a volume of fluid (e.g., lidocaine or other medications) during intraosseous infusion at a rate that is easily controllable, and that may be stopped or paused periodically if desired without significant disruption or hassle, using the clutch for example. Additionally, because dispensing device 200 automatically controls or limits the rate at which the fluid or volume is dispensed using the resilient member and the damper, the intraosseous infusion process may be performed more easily and with less discomfort to the patient. Further, it is noted that although described as a tool for improving intraosseous infusion, one of ordinary skill in the art would readily recognize that dispensing device 200 may be readily adapted and used for purposes other than intraosseous infusion.
Referring to
In an embodiment, base 301 may define a channel 306 configured to prevent movement of the syringe along a length of base 301 as the plunger 134 is depressed. In some embodiments, base 301 may include a strap 308 that may be configured to secure the syringe to the base 301. In some embodiments, base 301 may include both channel 306 and strap 308.
A portion of arm 310 may be movable between an extended position and a contracted position in which the portion of arm 310 is closer to base 301 than in the extended position. For example,
In the embodiment shown, arm 310 may include one or more incremental stops 316, and base 301 may include one or more locking tabs 314. Locking tabs 314 may be configured to releasably lock the portion of arm 310 at a position corresponding to one of the incremental stops 316 to prohibit further movement of the portion of arm 310 towards the contracted position. In some embodiments, each of the incremental stops 316 may be configured such that a distance by which the portion of arm 310 can compress plunger 134 corresponds to dispensing of a predetermined volume from reservoir 132. For example, incremental stops 316 may be spaced such that each incremental stop 316 represents an incremental volume (e.g., a 1 milliliter (mL) volume) being dispensed from the syringe (e.g., the distance by which arm 310 can compress plunger 134 between adjacent incremental stops results in a 1 milliliter volume being dispensed from the syringe), such that upon releasing the portion of arm 310 using the one or more locking tabs 314, the portion of arm 310 will move towards the contracted position and become locked at the next adjacent incremental stop 316, resulting in 1 mL volume being dispensed from the syringe. In an additional or alternative embodiment, the distance between adjacent incremental stops 316 may not be related to a defined volume being dispensed from the syringe, and instead may simply provide a mechanism for stopping or pausing the dispensing of the volume.
In an embodiment, dispensing device 300 may include a flow control valve 330 configured to be coupled downstream of an outlet (e.g., tip portion 136) of the syringe and to control a rate at which a volume is dispensed from the syringe. For example, as shown in
During operation, a user (e.g., a medical professional) of dispensing device 300 may couple base 301 to a syringe, and may extend the portion of arm 310 to the extended position, as shown in
From the foregoing description, it has been shown that dispensing device 300 provides a tool that may be used to dispense a volume of fluid (e.g., lidocaine or other medications) during intraosseous infusion at a rate that is easily controllable, and that may be stopped or paused periodically if desired without significant disruption or hassle. Additionally, because dispensing device 300 automatically controls or limits the rate at which the fluid or volume is dispensed using resilient member 302 and the damper, the intraosseous infusion process may be performed more easily and with less discomfort to the patient. Further, it is noted that although described as a tool for improving intraosseous infusion, one of ordinary skill in the art would readily recognize that dispensing device 300 may be readily adapted and used for purposes other than intraosseous infusion.
Referring to
In an embodiment, piston 422 may include one or more incremental stops 416, and base 401 may include one or more locking tabs 414. Locking tabs 414 may be configured to releasably lock the portion of arm 410 at a position corresponding to one of incremental stops 416 to prohibit further movement of the portion of arm 410 towards the contracted position. In an embodiment, each incremental stop 416 may be configured such that a distance by which the portion of arm 410 can compress plunger 134 corresponds to dispensing of a predetermined volume from reservoir 132. For example, incremental stops 416 may be spaced such that each incremental stop 416 represents an incremental volume (e.g., a 1 milliliter (mL) volume) being dispensed from the syringe (e.g., the distance by which arm 410 can compress plunger 134 between adjacent incremental stops results in a 1 milliliter volume being dispensed from the syringe), such that upon releasing the portion of arm 410 using the one or more locking tabs 414, the portion of arm 410 will move towards the contracted position and become locked at the next adjacent incremental stop 416, resulting in 1 mL volume being dispensed from the syringe. In an additional or alternative embodiment, the distance between adjacent incremental stops 416 may not be related to a defined volume being dispensed from the syringe, and instead may simply provide a mechanism for stopping or pausing the dispensing of the volume.
During operation, a user (e.g., a medical professional) of dispensing device 400 may couple base 401 to a syringe, and may extend the portion of arm 410 to the extended position, as shown in
From the foregoing description, it has been shown that dispensing device 400 provides a tool that may be used to dispense a volume of fluid (e.g., lidocaine or other medications) during intraosseous infusion at a rate that is easily controllable, and that may be stopped or paused periodically if desired without significant disruption or hassle. Additionally, because dispensing device 400 automatically controls or limits the rate at which the fluid or volume is dispensed using flow control valve 430, the intraosseous infusion process may be performed more easily and with less discomfort to the patient. Further, it is noted that although described as a tool for improving intraosseous infusion, one of ordinary skill in the art would readily recognize that dispensing device 400 may be readily adapted and used for purposes other than intraosseous infusion.
Referring to
The above specification and examples provide a complete description of the structure and use of exemplary embodiments. Although certain embodiments have been described above with a certain degree of particularity, or with reference to one or more individual embodiments, those skilled in the art could make numerous alterations to the disclosed embodiments without departing from the scope of this invention. As such, the various illustrative embodiments of the present devices are not intended to be limited to the particular forms disclosed. Rather, they include all modifications and alternatives falling within the scope of the claims, and embodiments other than the one shown may include some or all of the features of the depicted embodiment. For example, components may be combined as a unitary structure, and/or connections may be substituted. Further, where appropriate, aspects of any of the examples described above may be combined with aspects of any of the other examples described to form further examples having comparable or different properties and addressing the same or different problems. Similarly, it will be understood that the benefits and advantages described above may relate to one embodiment or may relate to several embodiments.
The claims are not intended to include, and should not be interpreted to include, means-plus- or step-plus-function limitations, unless such a limitation is explicitly recited in a given claim using the phrase(s) “means for” or “step for,” respectively.
Filing Document | Filing Date | Country | Kind |
---|---|---|---|
PCT/US16/52585 | 9/20/2016 | WO | 00 |
Number | Date | Country | |
---|---|---|---|
62232316 | Sep 2015 | US |