Abstract
Methods and devices are provided for sample collection. In one example, a device is provided comprising at least one capillary tube or collection channel directed to a sample vessel, wherein in a one-step removal step of detaching the sample vessel from the collection channel, a vacuum force is created within the sample vessel, due in part of the pulling of the sealed vessel away from the device, wherein this vacuum force draw out residual sample that may still be resident in the collection channel.
Claims
1. A device comprising: at least one capillary tube; a nozzle located at a proximal end of the capillary tube; at least one collection vessel with a self-healing cap, wherein the vessel is configured to go from a vented, to an unvented, and then to a sealed configuration as the nozzle is removed from the vessel; at least one structure on an outer surface of the nozzle such that a vent opens in the cap of the collection vessel when said cap slides over the at least one structure thereby creating the vented configuration, wherein the at least one structure is a protrusion, an indentation, a rib, a channel, a groove, or a bump, wherein during nozzle removal, when the vessel is in the sealed configuration, continued pulling of the vessel away from the device provides for a vacuum force to be created within the sample vessel such that the continued pulling of the sealed vessel away from the device provides for residual sample resident in the capillary tube to be drawn out of the nozzle and into the collection vessel.
2. The device of claim 1 wherein a suction effect is created by the nozzle forming a seal with the self-healing cap.
3. The device of claim 1 wherein other embodiments may use other techniques to create this non-vented state.
4. The device of claim 1 wherein the at least one collection vessel is transparent.
5. The device of claim 1 wherein the at least one collection vessel is translucent.
6. The device of claim 1 wherein the at least one collection vessel comprises an optically transmissive material.
7. The device of claim 1 wherein the at least one collection vessel has an interior coated with an anticoagulant.
8. The device of claim 1 wherein said at least one capillary tube is coated with an anticoagulant.
9. The device of claim 1 wherein a capillary channel is coated with an anticoagulant.
10. A method for using a sample collection device having a collection vessel, the method comprising: pushing the collection vessel forward towards a distal end of the device to create relative motion that moves a nozzle of the device through a self-healing cap of the vessel, wherein the vessel is configured to go from a vented, to an unvented, and then to a sealed configuration as the nozzle is removed from said vessel such that a vent opens in the cap of the collection vessel when said cap slides over at least one structure on an outer surface of the nozzle thereby creating the vented configuration, wherein the at least one structure is a protrusion, an indentation, a rib, a channel, a groove, or a bump; using a one-step motion to remove the collection vessel from the sample collection device wherein the motion to remove the collection vessel from the sample collection device provides a vacuum force to be created within the sample vessel which provides for a residual sample resident in a capillary tube of the sample collection device to be drawn out of the nozzle and into the collection vessel.
11. A sample collection device comprising: at least one sample collection channel; a nozzle located at a proximal end of the at least one sample collection channel; at least one collection vessel having a self-healing cap wherein said collection vessel is configured to go from a vent, to an unvented, and then to a sealed configuration as the vessel is moved along a path to disengage from the sample collection channel such that a vent opens in the cap of the collection vessel when said cap slides over at least one structure on an outer surface of the nozzle thereby creating the vented configuration, wherein the at least one structure is a protrusion, an indentation, a rib, a channel, a groove, or a bump.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
(1) FIG. 1 shows an exploded side view of one embodiment of a device described herein.
(2) FIGS. 2 to 7 show various perspective views of components associated with the embodiment described in FIG. 1.
(3) FIGS. 8 to 14 show various side views of another embodiment of a device as described herein.
(4) FIGS. 15 to 18 show one non-limiting example of a sequence of steps associated with detaching a sample vessel from one embodiment of a sample collection device.
(5) FIGS. 19 to 20 show views of embodiments of a device described herein.
(6) FIGS. 21 to 24 show various views of another embodiment of a device as described herein.
(7) FIGS. 25 to 27 show one non-limiting example of a sequence of steps associated with detaching a sample vessel from one embodiment of a sample collection device.
(8) FIG. 28 show a side view of another embodiment of a device as described herein.
(9) FIGS. 29 to 36 show another non-limiting example of a sequence of steps associated with detaching a sample vessel from one embodiment of a sample collection device.
(10) FIG. 37 shows an exploded side view of one embodiment of a device described herein.
(11) FIGS. 38 to 41 show various perspective views of components associated with the embodiment described in FIG. 37.
(12) FIGS. 42 and 43 show cross-sectional views of another embodiment of a sample collection device as described herein.
(13) FIGS. 44 to 55 show various views of still further embodiments as described herein.
DETAILED DESCRIPTION
(14) It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed. It may be noted that, as used in the specification and the appended claims, the singular forms “a”, “an” and “the” include plural referents unless the context clearly dictates otherwise. Thus, for example, reference to “a material” may include mixtures of materials, reference to “a compound” may include multiple compounds, and the like. References cited herein are hereby incorporated by reference in their entirety, except to the extent that they conflict with teachings explicitly set forth in this specification.
(15) In this specification and in the claims which follow, reference will be made to a number of terms which shall be defined to have the following meanings:
(16) “Optional” or “optionally” means that the subsequently described circumstance may or may not occur, so that the description includes instances where the circumstance occurs and instances where it does not. For example, if a device optionally contains a feature for a sample collection unit, this means that the sample collection unit may or may not be present, and, thus, the description includes both structures wherein a device possesses the sample collection unit and structures wherein sample collection unit is not present.
(17) As used herein, the terms “substantial” means more than a minimal or insignificant amount; and “substantially” means more than a minimally or insignificantly. Thus, for example, the phrase “substantially different”, as used herein, denotes a sufficiently high degree of difference between two numeric values such that one of skill in the art would consider the difference between the two values to be of statistical significance within the context of the characteristic measured by said values. Thus, the difference between two values that are substantially different from each other is typically greater than about 10%, and may be greater than about 20%, preferably greater than about 30%, preferably greater than about 40%, preferably greater than about 50% as a function of the reference value or comparator value.
(18) As used herein, a “sample” may be but is not limited to a blood sample, or a portion of a blood sample, may be of any suitable size or volume, and is preferably of small size or volume. In some embodiments of the assays and methods disclosed herein, measurements may be made using a small volume blood sample, or no more than a small volume portion of a blood sample, where a small volume comprises no more than about 5 mL; or comprises no more than about 3 mL; or comprises no more than about 2 mL; or comprises no more than about 1 mL; or comprises no more than about 500 μL; or comprises no more than about 250 μL; or comprises no more than about 100 μL; or comprises no more than about 75 μL; or comprises no more than about 50 μL; or comprises no more than about 35 μL; or comprises no more than about 25 μL; or comprises no more than about 20 μL; or comprises no more than about 15 μL; or comprises no more than about 10 μL; or comprises no more than about 8 μL; or comprises no more than about 6 μL; or comprises no more than about 5 μL; or comprises no more than about 4 μL; or comprises no more than about 3 μL; or comprises no more than about 2 μL; or comprises no more than about 1 μL; or comprises no more than about 0.8 μL; or comprises no more than about 0.5 μL; or comprises no more than about 0.3 μL; or comprises no more than about 0.2 μL; or comprises no more than about 0.1 μL; or comprises no more than about 0.05 μL; or comprises no more than about 0.01 μL.
(19) As used herein, the term “point of service location” may include locations where a subject may receive a service (e.g. testing, monitoring, treatment, diagnosis, guidance, sample collection, ID verification, medical services, non-medical services, etc.), and may include, without limitation, a subject's home, a subject's business, the location of a healthcare provider (e.g., doctor), hospitals, emergency rooms, operating rooms, clinics, health care professionals' offices, laboratories, retailers [e.g. pharmacies (e.g., retail pharmacy, clinical pharmacy, hospital pharmacy), drugstores, supermarkets, grocers, etc.], transportation vehicles (e.g. car, boat, truck, bus, airplane, motorcycle, ambulance, mobile unit, fire engine/truck, emergency vehicle, law enforcement vehicle, police car, or other vehicle configured to transport a subject from one point to another, etc.), traveling medical care units, mobile units, schools, day-care centers, security screening locations, combat locations, health assisted living residences, government offices, office buildings, tents, bodily fluid sample acquisition sites (e.g. blood collection centers), sites at or near an entrance to a location that a subject may wish to access, sites on or near a device that a subject may wish to access (e.g., the location of a computer if the subject wishes to access the computer), a location where a sample processing device receives a sample, or any other point of service location described elsewhere herein.
(20) In embodiments, the device comprises a capillary tube with a nozzle pre-fit into one end of the tube. To prepare the device for collection, one pushes the vessel forward towards a distal end of the device which in turn moves the nozzle through a self-healing cap of the vessel. This “primes” the device. This may be beneficial in embodiments where leaving the tube in a fixed position inside the self-healing cap will prevent the cap from fully resealing.
(21) In embodiments, the collection is performed through capillary force pulling sample into the capillary tube. Optionally, the entire capillary is tube is filled with sample. Optionally, some embodiments may be configured to draw sample a certain amount in the collection tube and not fill it entirely. Some embodiments may use optical markers, windows, or other visual methods to show when a sufficient amount of sample has been collected. Optionally, some embodiments may configure the capillary tube such as but not limited to venting, tube diameter size, tube cross-sectional shape, or other physical change to denote when filling is sufficient or even using such feature to stop capillary collection.
(22) In embodiments, to move sample into the sample vessel, gravity is used. The collection device oriented vertically so that the sample flows out of the tube into the sample vessel based on the diameter of the capillary tube selected to allow such gravity pulling to overcome any capillary holding force of the capillary tube. The sample vessel is sufficiently vented to allow for sample to easily enter the sample vessel.
(23) In embodiments, to remove the sample vessel from the collection device, a one-step motion is used to pull the sample vessel off of the sample collection device. As the pulling occurs, any venting of the interior of the vessel is sealed which also provides for vacuum force to be created within the sample vessel, due in part of the pulling of the vessel away from the device creating a suction effect. This vacuum force can help draw out any portion of residual sample that may still be resident in the capillary tube. This gravity based flow may be views in embodiments as a passive step to drain sample into the sample vessel. The nozzle in this passive, gravity flow step has the nozzle in a vented state. During the pull, the nozzle enters into a non-vented state which then allows for creation of a vacuum in the target vessel which in turn pulls sample into the target vessel. In one embodiment, this suction effect is created by the nozzle forming a seal with the self-healing cap. Optionally, other embodiments may use other techniques to create this non-vented state.
(24) Referring now to FIG. 1, an exploded side-view of one embodiment of the sample collection device 10 will now be described. FIG. 1 shows a vessel 20, a pre-slit plug 30 configured to engage the vessel 20, a vessel guide 40, a capillary tube 50, and a housing 60 that may have an elongate, pen-like shape. As seen in FIG. 1, the vessel 20 and pre-slit plug 30 may engage at least a portion of the vessel guide 40 so that the vessel 20 and pre-slit plug 30 may move in and out of the housing along a controlled pathway. Although a co-axial style vessel guide 40 is used herein to guide the path of the vessel 20, it should be understood that other embodiments may use other types of guides such as guide rails, guide channel, guide pole, or other features to provide a controlled pathway in and out of the housing 60. Although the capillary tube 50 is shown as a discrete item, separate from the housing 60, it should be understood that some embodiments may have these items integrally formed. Although the plug 30 is shown as discrete from the vessel 20, it should be understood that some embodiments may have these items integrally formed. Although the embodiment in FIG. 1 and other embodiments illustrated herein are typically shown to be used with a single vessel 20, it should be understood that other embodiments may utilize more than one vessel 20 that can be coupled to a single capillary tube 50 or have multiple capillary tubes 50 to accommodate separate vessels. By way of non-limiting example, one embodiment may have a Y-splitter to send sample from a single inlet to multiple outlets.
(25) As seen in FIG. 2, one embodiment of the vessel guide 40 will now be described. In this embodiment, the vessel guide 40 includes a cap end 42 for engaging the vessel 20 and plug 30. By way of non-limiting example, the plug 30 may be a self-healing TPE plug as described herein. A guide channel 44 may be included along an elongate portion of the vessel guide 40. In one non-limiting example, this guide channel 44 is used to assist the orientation and path of the vessel guide 40 as portions of the vessel guide 40 slides inward and outward of the housing 60.
(26) Referring now to FIG. 3, a perspective view of the cap end 42 is shown to illustrate one embodiment of grip structures 46 to engage the vessel 20 and/or plug 30. It should be understood that in some embodiments the grip structures 46 are bendable to allow for engagement and disengagement of the structures 46 from the sample vessel(s).
(27) FIG. 4 shows another perspective view showing how the vessel 20 can be coupled to this particular embodiment of vessel guide 40. As seen in FIG. 4, the vessel 20 may include a lip 23 to engage at least a portion of the structures 26. Optionally, it should be understood that the reverse may also be used, wherein there is a lip structure on the vessel guide 40 and grip structure on the vessel 20.
(28) Referring now to FIG. 5, one embodiment of plug 30 will now be described. In this particular embodiment, it should be understood that the plug 30 includes a slit 32. Optionally, other embodiments may be configured without the slit, and are instead, self-healing material that can be pierced and reseal once the piercing element is removed. Optionally, some embodiments may be a material this is not-slit, but prior to use, is punctured at least once to create a pre-used path that will self-heal once the piercing member is removed, but the result is that the plug 30 will also be easier to penetrate on the next use due to the pre-use scenario.
(29) Referring now to FIGS. 6 and 7, embodiments of the housing 60 will now be described. As seen in the perspective view of FIG. 6, the housing 60 has a proximal opening 62 greater in lateral size than a distal opening 64. The housing 60 in this particular embodiment has an elongate, pen-shaped configuration.
(30) Referring now to FIG. 7, a side view of the housing 60 is shown. It should be understood that in one embodiment, a capillary tube 50 is configured to be held inside the housing 60. Optionally, in other embodiments, the capillary tube 50 may be integrally formed with the housing 60. Optionally, instead of the tube 50 having a circular cross-sectional shape, it may have a cross-sectional shape selected from one or more of the following: square, rectangular, polygonal, oval, triangular, or single or multiple combinations of the foregoing. It should also be understood that in some embodiments, the cross-sectional shape is the same along the entire length of the tube or in some situations channel. Optionally, cross-sectional shape is different at different portions of the tube or in some situations channel.
(31) Referring now to FIGS. 8 to 10, a still further embodiment of a sample collection device 100 will now be described. FIG. 8 shows the sample collection device 100 in a normal state, wherein the sample vessel 110 has not been positioned to be in fluid communication with nozzle 120. In this non-limiting example, a guide 140 is used to assist in setting the pathway for the movement of the sample vessel 110. It should be understood that although the nozzle 120 and the capillary tube 150 are shown as separate pieces, it should be understood that in some embodiments, the nozzle 120 and the capillary 150 may be integrally formed. In some embodiments, the integration of the pieces may result in a simpler device because some of the interface components such as the receptor portion of the nozzle for coupling to the capillary tube may be eliminated. Optionally, some embodiments may use a capillary tube without the tapered inner channel of the nozzle 120, but instead use a straight inner channel without tapering of the inner channel. Optionally, other embodiments may increase the inner diameter of the channel.
(32) FIG. 9 shows that the sample vessel 110 and the nozzle 120 are in fluid communication and where sample collected by device 100 can be deposited into the sample vessel 110. Although not limited in this manner, the nozzle 120 extends down to be near the bottom of the vessel 110. In one embodiment, the nozzle 120 is in the “tapered” bottom region of the sample vessel 110 when the sample vessel is ready to receive sample.
(33) As seen in FIG. 10, sample which in this case is capillary blood from a finger, is collected into the capillary tube 150. In one embodiment, it is desirable to continue collecting sample into the capillary tube 150 until the entire tube is filled. By filling the entire tube, a known of amount of sample can be collection. Optionally, there may be other marks or indicators along the capillary tube 150 if a less-than-full tube collection is desired but having the marks allows for some indication to the operator or technician of the amount collected.
(34) Referring now to FIG. 11, a close-up cross-sectional view of one embodiment of the vessel 110 and nozzle 120 will now be described. As seen in FIG. 11, the nozzle 120 has at least one portion at allows for a vented interface with the plug 130, while the nozzle 120 has at least another portion that is configured for a sealed, non-vented interface with the plug 130. It should be understood that in one embodiment, the vented interface is created through the use of surface structures 170 such as but not limited to ribs, bumps, or other indentations to create an imperfect seal with the plug 130 over zone 180. The venting allows for air flow in and out of the sample vessel 120 as shown by arrows 128.
(35) Referring to still to FIG. 11, the seal along the nozzle 120 is formed in one embodiment by have a smooth surface on the nozzle 120 so that a non-vented interface is formed with the plug 130 over zone 190.
(36) By having a vented and non-vented configuration, the sample collection device is configured so that the device may use at least three different motive forces at various points during the collection process to move the sample from the patient into the device and then into the sample vessel. By way of non-limiting example, the sample is first collected into the sample collection device 110 by a first motive force, which in the current embodiment is a capillary collection force to draw sample into the capillary tube. A second motive force, which in this embodiment is gravity, is used to move at least some portion of the sample into the sample vessel 110 when the sample collection device 100 is placed in vertical or other non-horizontal orientation to allow for a force such as gravity or simulated-gravity to move the sample into the sample vessel 110. In this non-limiting example, a third motive force is used to move at least some portion of any sample remaining in the capillary tube into the sample vessel 110, which in this embodiment is a suction force created when the nozzle 120 is in a sealed interface with the plug 130 while there is still relative motion between the sample vessel 110 and the nozzle 120. This relative motion while there is a sealed interface creates a negative pressure build-up inside the sample vessel 110 which then causes at least some portion of the sample in the capillary tube to be “urged” into the sample vessel 110 due to the negative pressure environment.
(37) This use of at least three different motive forces allows for improved collection of sample from the sample collection device 100. Optionally, some embodiments may use still other motive forces to draw any remaining sample into the device. Of course, due to the size scale of some of the collection tubes and vessels, it may be possible to use some conventional techniques, such as tapping on the device, to facilitate fluid transfer.
(38) As seen in FIG. 11, a proximal end of the nozzle 120 can be positioned close to the bottom of the vessel 110. Optionally, some may have the end of nozzle 120 in contact with at least some portion of the bottom of the sample vessel 110.
(39) Referring now to FIGS. 12 to 14, one technique for transferring sample from the capillary tube 150 to the sample vessel 110 is shown. FIG. 12 shows that sample has filled the entire length of the capillary tube 150.
(40) FIG. 13 shows the sample collection device 100 oriented in a non-horizontal position to allow gravity or similar force to overcome capillarity of the capillary tube 150 and assist the flow of sample out of the capillary tube 150 and into the sample vessel 110.
(41) FIG. 14 shows that gravity will assist the flow of at least a portion of the sample into the sample vessel 110. It shows that, in at least some embodiments, at least some portion of the sample remains in the capillary tube 150, even when the sample collection device 110 is in the vertical orientation.
(42) Some embodiments may use an additional force to further extract the remaining sample in the capillary tube 150 into the sample vessel 110. In one non-limiting example, further force such as provided by way of centrifugation can further assist the movement of sample into the sample vessel 110. In such a centrifugation scenario, the device 100 can be mounted to a cavity of the centrifuge with the sample vessel at the bottom of the cavity and then spinning the entire device on the centrifuge. Optionally, more than one sample collection device 100 can be mounted on the centrifuge for sample extraction.
(43) Optionally, some embodiments may use a pressure differential to “push” the sample out of the capillary tube 150 and into the sample vessel 110. This “push” can be created by use of pressurized gas, a syringe, bulb, or other pressure source to assist movement of the sample. Optionally, a still further device may use a thin plunger to push sample out of the tube and into the sample container.
(44) Referring now to FIGS. 15 to 18, one embodiment of how sample is moved into the sample vessel 110 will now be described. As seen in FIG. 15, even after the device 100 is moved to a vertical orientation to allow gravity or similar force to “drain” sample into the sample vessel 110, at least some portion of the sample remains in the capillary tube 150 and/or the nozzle 120.
(45) As seen in FIG. 16, relative motion of the guide 140 to the housing 160 starts to extend the guide 140 in a direction outward from the housing 160. FIG. 16 shows that in the present, non-limiting embodiment, the capillary tube 150 and nozzle 120 are in fixed relation to the housing 160, but the capillary tube 150 and nozzle 120 are slidable relation to the guide 140, sample vessel 110, and plug 130. As relative motion moves the guide 140 outward from the housing 160, relative motion is also created between the plug 130 and the nozzle 120. The relative motion between the plug 130 and the nozzle 130 transitions the interface between the plug 130 and nozzle 120 from a vented state due to at least one “imperfect” seal at the interface to a non-vented stated due to the sealed, non-vented condition of the interface between plug 130 and nozzle 120. In the present embodiment, the vent condition at the interface of the plug 130 and nozzle 120 also controls the vent state of the sample vessel 110. Accordingly, as the vent state changes at the interface between the plug 130 and the nozzle 120, so does the vent state of the sample vessel 110.
(46) Referring now to FIG. 17, continued relative motion between the guide 140 and the housing 160 will increase the suction created inside the chamber of the sample vessel 110. This increased suction due to the non-vented state of the nozzle 120 and the plug 130 and motion of the sample vessel 110, will draw more sample into the sample vessel. This may be due in part the pushing force of air trying to enter the sample vessel 110 through the capillary tube 150 as indicated by arrow 152.
(47) As seen in FIG. 18, once the guide 140 has been fully extended and/or the nozzle 120 has disengaged from the plug 130, the sample 110 can be decoupled from the guide 140 and separated from the sample collection device 110. In this non-limiting example, the plug 130 is formed of a self-healing material the reseals the pathway through the plug 130 used by the nozzle 120 to access the interior of the sample vessel 110. In this manner, the plug 130 if made of a self-healing material, will create and automatically sealed vessel once the sample vessel 110 is disconnected from the nozzle 120. This minimizes the amount of time, if any, that the sample is exposed to an atmosphere external the chamber of the sample vessel 110.
(48) FIG. 18 shows the sample vessel 110 with plug 130 can be fully decoupled from the sample collection device 110 so that the smaller size of the sample vessel 110 is easier to transport in a shipping container or for processing equipment manipulate/handle.
(49) It should be understood that although this embodiment uses the nozzle 120 to create the vented/non-vented state of the sample vessel 110, other techniques are not excluded. For example, other embodiments may only have portions of the nozzle 120 configured to form an imperfect seal, instead of having the imperfect seal extend around the entire circumference of the nozzle. Optionally, another vent pathway can be configured to extend through the plug 130 in a manner that allows the vent to be opened or closed as desired. For example, the vented/unvented state can be controlled by a finger covering a vent opening. Covering the vent opening creates a non-vented state in the sample vessel 110, which when coupled with relative motion of the sample vessel to the housing/capillary tube, can force residual sample in the capillary tube into the sample vessel 110. Of course, in place of a finger, other apparatus such as a cover, flap, housing portion, or other mechanism for opening and/or closing at least one vent.
(50) Referring now to FIG. 19, a still further embodiment of a sample collection device 200 will now be described. FIG. 19 shows an exploded view of this embodiment of sample collection device 200. FIG. 19 shows a sample vessel 210 for use with a plug 230 that can be configured to engage a guide 240. In this present embodiment, a nozzle 220 is sized to engage the capillary tube 250 that is coupled to the housing 260. It should be understood that the nozzle 220 can be configured to have structure(s) along at least a portion of the nozzle 220 to allow for imperfect seal against the plug 230, while at least another portion of the nozzle 220 provides for a non-venting seal with the plug 230.
(51) FIG. 20 provides a close-up perspective view of the nozzle 220 coupled to the capillary tube 250. As seen in FIG. 20, the nozzle 220 may include at least one structure 222 that allows for a vented condition when the plug 230 is engaged with the nozzle 220. In FIG. 20, the structure is a channel, groove, or similar structure that allows for a vented interface between nozzle 220 and the plug 230. Variable inside geometry allows for control of flow through capillary.
(52) In embodiments, the vessel can be removed from outer housing with reduced risk of contamination and without need for tapping by technician. This is due in part because of the self-healing plug and in part because residual sample in the capillary tube 250 is urged into the sample vessel 210 based on vented/unvented states of the sample vessel 210. It should also be understood that in some capillary tube sizes, the tapping by the technician may be insufficient or inferior to using the technique herein of urging residual sample into the sample vessel 210.
(53) Referring now to FIGS. 21 to 24, the use of the sample collection device 200 will now be described. FIG. 21 shows the sample collection 200 in a resting, unprimed state, prior to use. As seen in FIG. 21, the guide 240 is in an outward extended position relative to the housing 260. This non-primed position is useful so that the nozzle 220 (not shown) is not engaged against the self-healing plug 230, wherein continued-extended contact with the nozzle 220 could deform the plug 230 to an extent that it cannot self-heal after the nozzle 220 is removed.
(54) FIG. 22 shows that sample collection device 200 in a “ready for collection” state wherein the sample collection device 200 is primed. In the primed position, the nozzle 220 penetrates the plug 230.
(55) FIG. 23 shows that after sample is collected, the entire device 200 and be positioned in a non-horizontal manner to allow for gravity assisted flow of sample into the sample vessel 210.
(56) FIG. 24 shows the vessel in a vertical orientation. This vertical orientation maximizes the ability for gravity to assist flow into the sample vessel 210.
(57) Referring now to FIGS. 25 to 27, the process of using vented and unvented states of sample vessel 210 will now be described. FIG. 25 shows that there remains a portion of the sample in the nozzle 220. The nozzle 220 in FIG. 25 allows for venting through the plug 230 as indicated by arrows 224.
(58) FIG. 26 shows that at least some portion of the guide 240 has begun to be extended away from the housing 260 and the capillary tube 250. This move changes the interface between the nozzle 220 and the plug 230, creating a sealed, non-venting interface with the plug 230. Moving the interface into a non-venting condition will urge any remaining sample in the capillary tube 250 and/or nozzle 220, due in part to the continued movement of the sample vessel away from the housing 260 that creates a “suction” effect to draw sample into the vessel.
(59) FIG. 27 shows the sample vessel 210 extended away from the sample collection device 200 and the guide 240 in an extended position outward from the housing 260. The sample has been substantially completely moved into the sample vessel 210. This is particularly desirable to improve yield when collecting small sample volumes.
(60) Referring now to FIG. 28, a side-view is shown of the device 200. The housing 260 is shown wherein the housing 260 contains visibility windows 268 that allow for visualization of the sample in capillary tube 250 during collection. This visualization can assist the user in confirming that sample is collected knowing when a sufficient amount of sample has be collected in the device. It can also provide feedback to the user to see if they are positioning the sample collection device 200 in the desired position for successful collection, based in part on the rate of sample flow in the capillary tube 250.
(61) Referring now to FIGS. 29 to 36, a still further example is provided showing the various steps associated with the use of the sample collection device 200. FIG. 29 shows the sample collection device 200 in a pre-use condition, wherein the sample collection device 200 will be primed by relative motion of sliding a carrier and sample collection device toward the housing 260 as indicated by the arrow.
(62) FIG. 30 shows the sample collection device 200 in a primed configuration that is ready to collect sample, wherein the nozzle has pierced the self-healing plug 230.
(63) FIG. 31 shows that one end of the sample collection device 200 is touched a pool or droplet of bodily fluid sample. As seen in FIG. 31, the sample collection device 200 is maintained, in this non-limiting example, at a substantially horizontal orientation.
(64) FIG. 32 shows that the sample should be visible all way to the back of the sample collection vessel 210. As seen in FIG. 32, some embodiments may have the entire sample collection device 200 substantially transparent or translucent to better visualize the sample collection process.
(65) FIGS. 33 and 34 show that the sample collection device 200 is moved from a substantially horizontal orientation to a substantially vertical orientation so that sample in the capillary tube 250 can drain into the sample vessel 210.
(66) FIG. 35 shows that the guide 240 and sample vessel 210 are extended away from the housing 260 to create a suction effect in the sample vessel 210 to draw residual sample in the capillary tube 250 and the nozzle 220 into the sample vessel 210.
(67) FIG. 36 shows that after residual sample is drawn out from the capillary tube 250 and the nozzle 220, the sample vessel 210 can be detached from the other portions of the sample collection vessel 210. The sample vessel 210 is much smaller than the rest of the collection device 200 and this reduced size facilitates transport and storage of the sample vessel 210 and the sample therein.
(68) Referring now to FIGS. 37 to 41, a still further embodiment of a sample collection device 300 will now be described. FIG. 37 shows that for this embodiment of the sample collection device 300, there is a sample vessel 310, a nozzle 320, a plug 330, a vessel guide 340, a capillary tube 350, and a housing 360. A further feature comprises a vacuum plug 370 located between the vessel 310 and the plug 330. The vacuum plug 370 is designed to work in conjunction with nozzle 320 to create vented and non-vented states.
(69) As seen in FIGS. 38 and 39, a vacuum plug 370 is shown in various perspective views. As seen in the figures, there may be annular ridges or ribs of the plugs.
(70) FIGS. 40 and 41 show the nozzle 320 from various perspective views. As seen in FIG. 40, the nozzle 320 may include at least one cut out portion 322 that may facilitate venting through the plug 330. Optionally, some may have two or more cut out portions 322. Some may have three or more cut out portions. Some of these portions 322 may be same size or some may each or some have different sizes.
(71) It should be understood that the nozzle may be injection molded allows for control of flow through the nozzle (mixing, hemolysis, etc.). In at least some embodiments, the system is configured to reduce the chance of contamination outside of vessel (flexible geometry, hydrophobic coatings, etc.).
(72) Referring now to FIGS. 42 and 43, it should be understood that other embodiments may be adapted to use a nozzle or similar sample conduit that has at least one portion that forms a sealed interface at one location but a non-sealed interface at a different location. FIG. 42 shows an embodiment with a single inlet 400 that splits via a Y-shaped tube or channel shape to create two separate paths leading to two separate outlets with nozzles 420 therein for each path. FIG. 43 shows an embodiment with there are two inlets 402 and 404 that create two separate paths leading to two separate outlets with nozzles 420 therein for each path. As seen in FIG. 43, the nozzles 420 may include venting features 422 such as but not limited to the protrusions, channels, or other features the create an imperfect seal with the cap of the sample vessel. It should be understood that other embodiments such as those found in U.S. application Ser. No. 14/320,471 and PCT applications PCT/US13/58627, PCT/US14/30792, PCT/US15/20307, PCT/US13/73443, and PCT/US13/00268, all fully incorporated herein by reference for all purposes. It should be understood that the embodiments creating a vented/unvented condition in one or more sample vessels can be adapted for use with any of the capillary collection devices. It should also be understood that devices used for venous collection blood using a penetrating member such as a needle or lancet can also be configured to use any of the embodiments described herein for creating a vented/unvented condition in one or more sample vessels.
(73) Referring now to FIGS. 44 and 45, still further views of embodiments of a sample collection device 450 are shown. FIG. 44 shows one sample collection device being held in the hand of a user to show its relative scale and size. FIG. 45 shows an embodiment that is substantially transparent to allow the capillary tube therein to be visualized to show fill level in the tube.
(74) Referring now to FIGS. 46 and 47, still further views of embodiments of a sample collection device 500 is shown. FIG. 46 shows one embodiment of a fully assembled sample collection device 500 whereas FIG. 47 shows an exploded view of the various components used in sample collection device 500.
(75) FIG. 47 may have a collection tube filler 542 that may be a shaft or other structure to keep the collection channel or tube 540 clean prior to use. Some embodiments may have an activator that in the current embodiment may be an extension structure that may be located in a first position or locked in a second position.
(76) FIGS. 48A and 48B show components of the sample collection unit (SCU) 510 which has a vessel portion and a cap 520. As seen in FIG. 48B, the cap 520 may include a linear slit 530 or other shaped slit to facilitate the passage of the capillary tube 530. The slit 530 can also be shaped so as to provide an imperfect seal when the cap 520 engages one portion of capillary tube 540 and a substantially air tight seal when engaging a second portion of the capillary tube 540, wherein the second portion is different from the first portion in at least one aspect, such as but not limited to shape or texture to allow for these two different types of seals. Other techniques for creating sealed and unsealed engagements may also be used in place of the techniques described. Optionally, some embodiments may have more than one slit.
(77) Referring now to FIGS. 49 to 52, various stages of use for the sample collection device 500 are shown. FIG. 49 shows the activator and SCU being pushed towards the housing to “prime” the device for use. As seen in FIG. 49, a collection tube filler is in the capillary tube to prevent contamination of the interior of the capillary. FIG. 49 also shows that the capillary tube in this non-primed state does not engage the cap 520. This prevents undesired pre-stretching of the slit 530 prior to use that may prevent the slit 530 from closing around the capillary tube in an air tight manner.
(78) FIG. 50 shows the primed state where the capillary tube 540 is in the SCU 510 and the collection tube filler 542 is extended sufficiently outward from the capillary tube to be removed by the user. In one embodiment, at least one portion of the collection tube filler extends outward
(79) FIG. 51 shows that, in this non-limiting example, the collection tube filler has been removed from the device 500 and is in condition to collect sample into the capillary tube and then into the SCU.
(80) FIG. 52 shows that at least some portion of the sample collection capillary has a different shape, which in this non-limiting example, is the result of crimping. Optionally, a proximal end is crimped. Optionally, some embodiments can use this treatment at a different portion of the device, in place of or in addition to the treatment of the proximal end. Optionally, more than two regions of the capillary and/or the cap can be treated for creating different types of sealing conditions.
(81) Referring now to FIGS. 53 to 55, various features of the sample collection device 500 are shown. FIG. 53 and more specifically FIG. 54, show one embodiment of locking mechanism. When the nub (arrow #1) meets the window (arrow #2) after removing the SCU it will lock the activator 544 in place to the housing 546 and prevent the capillary to be exposed to the user.
(82) FIG. 55 shows an image of an anti-rotation mechanism. The wings of the SCU 510 (the transparent features) are confined in the slots (shown by red arrows) of the Activator 544 which represent the anti-rotation mechanism of the SCU 510. Thus the alignment/direction of the split on the cap in respect to the capillary is maintained. There may be other mechanisms where protrusion(s) and/or slot(s) are used to maintain alignment. In some embodiments, configurations can be reversed for some or all features, wherein one or more slots are on the SCU 510 and the protrusion(s) are on the adapter 544.
(83) As previously described in FIG. 52, the capillary 540 in this embodiment is crimped in one embodiment at the end to allow complete drainage of the blood from the capillary tube. This is possible due to the interaction of the crimped end and the split cap. When the full diameter of the capillary 540 (non-crimped end) is in the split of the cap it allows venting and transfer of blood from the capillary to the SCU when the sample collection device 500 is held vertically after collection, however when the crimped portion is in the split 530 of the cap (during SCU removal) it produces a squeegee effect which sucks the rest of the blood still stuck in the capillary.
(84) While the invention has been described and illustrated with reference to certain particular embodiments thereof, those skilled in the art will appreciate that various adaptations, changes, modifications, substitutions, deletions, or additions of procedures and protocols may be made without departing from the spirit and scope of the invention. For example, with any of the above embodiments, it should be understood other sample collection devices can be configured to use the nozzle-guide-plug design set forth herein to extract residual sample into the sample vessel.
(85) Additionally, concentrations, amounts, and other numerical data may be presented herein in a range format. It is to be understood that such range format is used merely for convenience and brevity and should be interpreted flexibly to include not only the numerical values explicitly recited as the limits of the range, but also to include all the individual numerical values or sub-ranges encompassed within that range as if each numerical value and sub-range is explicitly recited. For example, a size range of about 1 nm to about 200 nm should be interpreted to include not only the explicitly recited limits of about 1 nm and about 200 nm, but also to include individual sizes such as 2 nm, 3 nm, 4 nm, and sub-ranges such as 10 nm to 50 nm, 20 nm to 100 nm, etc. . . .
(86) The publications discussed or cited herein are provided solely for their disclosure prior to the filing date of the present application. Nothing herein is to be construed as an admission that the present invention is not entitled to antedate such publication by virtue of prior invention. Further, the dates of publication provided may be different from the actual publication dates which may need to be independently confirmed. All publications mentioned herein are incorporated herein by reference to disclose and describe the structures and/or methods in connection with which the publications are cited. The following application(s) are fully incorporated herein by reference for all purposes: US Provisional Application Ser. No. 62/333,137 filed May 6, 2016, PCT application PCT/US17/31411 filed May 5, 2017, and U.S. Provisional Application Ser. No. 62/583,437 filed Nov. 8, 2017.
(87) While preferred embodiments of the present invention have been shown and described herein, it will be obvious to those skilled in the art that such embodiments are provided by way of example only. Numerous variations, changes, and substitutions will now occur to those skilled in the art without departing from the invention. It should be understood that various alternatives to the embodiments of the invention described herein may be employed in practicing the invention. Any feature, whether preferred or not, may be combined with any other feature, whether preferred or not. The appended claims are not to be interpreted as including means-plus-function limitations, unless such a limitation is explicitly recited in a given claim using the phrase “means for.” It should be understood that as used in the description herein and throughout the claims that follow, the meaning of “a,” “an,” and “the” includes plural reference unless the context clearly dictates otherwise. For example, a reference to “an assay” may refer to a single assay or multiple assays. Also, as used in the description herein and throughout the claims that follow, the meaning of “in” includes “in” and “on” unless the context clearly dictates otherwise. Finally, as used in the description herein and throughout the claims that follow, the meaning of “or” includes both the conjunctive and disjunctive unless the context expressly dictates otherwise. Thus, the term “or” includes “and/or” unless the context expressly dictates otherwise.
