Patent Application
20240075252
The present disclosure relates generally to medical devices for use with intravenous (IV) catheters and, more specifically, to medical devices with features for improving performance in terms of accessing the vasculature.
Instrument delivery devices, including those used for collecting blood, when used with indwelling IV catheters can include displaceable implements that are advanced beyond the tip of the indwelling catheter. Often, when the displaceable implement is advanced, it can encounter an obstruction, resulting in deflection of the implement. Examples of obstructions include the friction of the seal within the delivery device, torturous path within an integrated catheter, pinching of the catheter tubing as it dives into the skin, thrombus, fibrin, and valves. Further, delivery of instruments can be complicated by interchange of instruments, and the necessary length for deployment of such instruments. Accordingly, a need exists in the art for instrument delivery devices that allow for robust performance of the instrument that is being delivered.
Provided herein is a medical device, including an instrument having a proximal end and a distal end, an introducer configured to moveably receive the instrument and having an outer housing having a proximal end, a distal end, and a sidewall therebetween defining an inner volume, and an inner housing having a proximal end, a distal end, and a sidewall therebetween, the distal end of the introducer configured to couple the introducer to an intravenous line, wherein the inner housing and outer housing are displaceable relative to one another to move the instrument between a first position, in which the instrument is disposed within the outer housing, and a second position, in which the distal end of the instrument is disposed beyond the distal end of the outer housing such that at least a first portion of the instrument is disposed within the intravenous line when the introducer is coupled to the intravenous line, such that a length of the inner housing and the outer housing when the instrument is in the first position is greater than when the instrument is in the second position.
The following description is provided to enable those skilled in the art to make and use the described embodiments contemplated for carrying out the invention. Various modifications, equivalents, variations, and alternatives, however, will remain readily apparent to those skilled in the art. Any and all such modifications, equivalents, variations, and alternatives are intended to fall within the spirit and scope of the present invention.
For purposes of the description hereinafter, the terms “upper”, “lower”, “right”, “left”, “vertical”, “horizontal”, “top”, “bottom”, “lateral”, “longitudinal”, and derivatives thereof shall relate to the invention as it is oriented in the drawing figures. However, it is to be understood that the invention may assume various alternative variations, except where expressly specified to the contrary. It is also to be understood that the specific devices illustrated in the attached drawings, and described in the following specification, are simply exemplary embodiments of the invention. Hence, specific dimensions and other physical characteristics related to the embodiments disclosed herein are not to be considered as limiting.
It should be understood that any numerical range recited herein is intended to include all values and sub-ranges subsumed therein. For example, a range of “1 to 10” is intended to include all sub-ranges between (and including) the recited minimum value of 1 and the recited maximum value of 10, that is, having a minimum value equal to or greater than 1 and a maximum value equal to or less than 10.
U.S. patent application Ser. No. 17/570,554 is incorporated herein by reference in its entirety.
Provided herein are devices and systems for delivering instruments through indwelling catheters, such as peripheral intravenous catheters (PIVCs). While certain devices (e.g., blood draw devices) are discussed below in terms of devices that may be used with PIVCs, and exemplified in the attached drawings, those of skill will appreciate that any number of different devices for introducing an instrument, including instruments ranging from tubes, probes, sensors (e.g., pressure sensors, pH sensors, lactate sensors, glucose sensors, and the like), wiring, fiber optics, guidewires, etc., may be used within the scope of the present disclosure.
Referring now to
In some non-limiting embodiments or aspects, the catheter assembly 10 may include a catheter 22 extending from the distal end 14. In some embodiments, the first catheter 22 may include a peripheral intravenous catheter, a midline catheter, or a peripherally-inserted central catheter. Catheter 22 may be formed of any suitable material and may be of any useful length, as known to those of skill in the art. In some non-limiting embodiments or aspects, the catheter assembly 10 may include a first fluid conduit 24 extending from the port 18. First fluid conduit 24 may be formed of any suitable material known to those of skill in the art, and may have a distal end and a proximal end, and first fluid conduit 24 may be coupled, at distal end 26 thereof, to port 18. In some non-limiting embodiments or aspects, a connector 30 may be coupled to a proximal end 28 of first fluid conduit 24. Connector 30 may be a t-connector (e.g., one side port arranged at a 90 degree angle relative to a longitudinal axis of connector 30), a y-connector (e.g., one side port arranged at a 25, a 60, or a 75 degree angle relative to a longitudinal axis of connector 30), or any other type of connector known in the art, and may include a second lumen therethrough, having any number of branches suitable for the type of connector.
In some non-limiting embodiments or aspects, catheter assembly 10 may include an extension set (integrated into or removably coupleable to catheter adapter 12, connector 30, and/or needleless access connector 32) including a second fluid conduit, such as second fluid conduit 34. Extension sets are known to those of skill in the art and are commercially available from, for example, Becton, Dickinson and Company. In some non-limiting embodiments or aspects, second fluid conduit 34 may include a luer connection 36 at an end thereof. In some non-limiting embodiments or aspects, the extension set may include a clamp 40, to allow for occlusion of second fluid conduit 34. Clamp 40 and second fluid conduit 34 may be formed of any suitable materials known to those of skill in the art. In non-limiting embodiments, second lumen (e.g., within connector 30) has an inner diameter that is substantially equivalent to an inner diameter of first fluid conduit 24 and/or second fluid conduit 34.
Catheter assembly 10 may include a needleless access connector 32 and/or a second fluid conduit 34. Suitable needleless access connectors 32 can include any split-septum connector and/or those with direct fluid path access. Needleless access connectors 32 are known to those of skill in the art and are commercially available from, for example, Becton, Dickinson and Company under the trade names Q-SYTE, and SMARTSITE. While the non-limiting embodiments of
With continuing reference to
Inner housing, as shown in the non-limiting embodiment of
In non-limiting embodiments, fluid conduit 150 may be advanced from a first positon, in which distal end 152 of fluid conduit 150 is within instrument delivery device 110, for example within outer housing 116 and/or lock 130, and a second position, in which a distal end 152 of fluid conduit 150 is positioned distally of lock 130 and, in embodiments in which instrument delivery device 110 is coupled to catheter assembly 10, optionally distally of catheter 22. While lock 130 is exemplified as a proboscis 132 and arms in
With continuing reference to
Turning to
Turning to
Although the present disclosure has been described in detail for the purpose of illustration based on what is currently considered to be the most practical and preferred embodiments or aspects, it is to be understood that such detail is solely for that purpose and that the present disclosure is not limited to the disclosed embodiments or aspects, but, on the contrary, is intended to cover modifications and equivalent arrangements that are within the spirit and scope of the appended claims. For example, it is to be understood that the present disclosure contemplates that, to the extent possible, one or more features of any embodiment may be combined with one or more features of any other embodiment.
