US20180049686A1 - Biological Fluid Separation Device and Biological Fluid Separation and Testing System - Google Patents

Biological Fluid Separation Device and Biological Fluid Separation and Testing System Download PDF

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Publication number
US20180049686A1
US20180049686A1 US15/803,001 US201715803001A US2018049686A1 US 20180049686 A1 US20180049686 A1 US 20180049686A1 US 201715803001 A US201715803001 A US 201715803001A US 2018049686 A1 US2018049686 A1 US 2018049686A1
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Prior art keywords
blood
biological fluid
fluid separation
collection chamber
separation cartridge
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US15/803,001
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English (en)
Inventor
Daniel J. Marchiarullo
Bradley M. Wilkinson
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Becton Dickinson and Co
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Becton Dickinson and Co
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Priority claimed from US14/251,699 external-priority patent/US9833182B2/en
Application filed by Becton Dickinson and Co filed Critical Becton Dickinson and Co
Priority to US15/803,001 priority Critical patent/US20180049686A1/en
Assigned to BECTON, DICKINSON AND COMPANY reassignment BECTON, DICKINSON AND COMPANY ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: MARCHIARULLO, DANIEL J., WILKINSON, BRADLEY M.
Publication of US20180049686A1 publication Critical patent/US20180049686A1/en
Abandoned legal-status Critical Current

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    • B01L2400/0409—Moving fluids with specific forces or mechanical means specific forces centrifugal forces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L2400/00—Moving or stopping fluids
    • B01L2400/04—Moving fluids with specific forces or mechanical means
    • B01L2400/0475—Moving fluids with specific forces or mechanical means specific mechanical means and fluid pressure
    • B01L2400/0478—Moving fluids with specific forces or mechanical means specific mechanical means and fluid pressure pistons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L2400/00—Moving or stopping fluids
    • B01L2400/06—Valves, specific forms thereof
    • B01L2400/0688—Valves, specific forms thereof surface tension valves, capillary stop, capillary break
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/40—Concentrating samples
    • G01N1/4005—Concentrating samples by transferring a selected component through a membrane
    • G01N2001/4016—Concentrating samples by transferring a selected component through a membrane being a selective membrane, e.g. dialysis or osmosis
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/40—Concentrating samples
    • G01N1/4077—Concentrating samples by other techniques involving separation of suspended solids
    • G01N2001/4088—Concentrating samples by other techniques involving separation of suspended solids filtration

Definitions

  • the present disclosure relates generally to devices, assemblies, and systems adapted for use with vascular access devices. More particularly, the present disclosure relates to devices, assemblies, and systems adapted for collecting biological samples for use in point-of-care testing.
  • Blood sampling is a common health care procedure involving the withdrawal of at least a drop of blood from a patient.
  • Blood samples are commonly taken from hospitalized, homecare, and emergency room patients either by finger stick, heel stick, or venipuncture. Blood samples may also be taken from patients by venous or arterial lines. Once collected, blood samples may be analyzed to obtain medically useful information including chemical composition, hematology, or coagulation, for example.
  • Blood tests determine the physiological and biochemical states of the patient, such as disease, mineral content, drug effectiveness, and organ function. Blood tests may be performed in a clinical laboratory or at the point-of-care near the patient.
  • One example of point-of-care blood testing is the routine testing of a patient's blood glucose levels which involves the extraction of blood via a finger stick and the mechanical collection of blood into a diagnostic cartridge. Thereafter, the diagnostic cartridge analyzes the blood sample and provides the clinician a reading of the patient's blood glucose level.
  • Other devices are available which analyze blood gas electrolyte levels, lithium levels, and ionized calcium levels. Some other point-of-care devices identify markers for acute coronary syndrome (ACS) and deep vein thrombosis/pulmonary embolism (DVT/PE).
  • ACS acute coronary syndrome
  • DVD/PE deep vein thrombosis/pulmonary embolism
  • Blood samples are frequently drawn using hypodermic needles or vacuum tubes attached to a proximal end of a needle or a catheter assembly.
  • clinicians collect blood from a catheter assembly using a needle and syringe that is inserted into the catheter to withdraw blood from a patient through the inserted catheter.
  • needles and vacuum tubes as intermediate devices from which the collected blood sample is typically withdrawn prior to testing.
  • Point-of-care testing devices allow for a blood sample to be tested without needing to send the blood sample to a lab for analysis. Thus, it is desirable to create a device that provides an easy, safe, reproducible, and accurate process with a point-of-care testing system.
  • the present disclosure provides a biological fluid separation device, such as a blood separation device, that is adapted to receive a multi-component blood sample, for example, having a cellular portion and a plasma portion. After collecting the blood sample, the blood separation device is able to separate the plasma portion from the cellular portion. After separation, the blood separation device is able to transfer the plasma portion of the blood sample to a point-of-care testing device.
  • the blood separation device of the present disclosure also provides a closed separation system that reduces the exposure of a blood sample and provides fast mixing of a blood sample with a sample stabilizer, which could be an anticoagulant, or a substance designed to preserve a specific element within the blood such as, for example, RNA, protein analyte, or other element.
  • the blood separation device is engageable with a blood testing device for closed transfer of a portion of the plasma portion from the blood separation device to the blood testing device.
  • the blood testing device is adapted to receive the plasma portion to analyze the blood sample and obtain test results.
  • the blood separation device and the biological fluid separation and testing system of the present disclosure are that it is a closed system which reduces blood sample exposure, it provides passive and fast mixing of the blood sample with a sample stabilizer, it facilitates separation of the blood sample without transferring the blood sample to a separate device, and it is capable of transferring pure plasma to a point-of-care testing device.
  • the blood separation device of the present disclosure enables integrated blood collection and plasma creation in a closed system without centrifugation. The clinician may collect and separate the blood sample and then immediately transfer the plasma portion to the point-of-care testing device without further manipulation. This enables collection and transfer of plasma to the point-of-care testing device without exposure to blood.
  • the blood separation device of the present disclosure minimizes process time by processing the blood within the blood separation device and without external machinery. Further, for tests which only require small amounts of blood, it eliminates the waste associated with blood collection and plasma separation with an evacuated tube.
  • a biological fluid separation cartridge such as a blood separation cartridge, includes a housing having an inlet port and a flow channel defined within the housing in fluid communication with the inlet port, a first collection chamber defined within the housing in fluid communication with the flow channel and including a first outlet port, and a second collection chamber defined within the housing in fluid communication with the flow channel and including a second outlet port.
  • the second collection chamber is isolated from the first collection chamber, and the second outlet port is spaced apart from the first outlet port.
  • the flow channel has a spiral shape. At least a portion of the flow channel may include a sample stabilizer.
  • the cartridge may include an inlet channel in fluid communication with the inlet port and the flow channel, with the inlet channel including a sample stabilizer.
  • the biological fluid separation cartridge may be adapted to receive a multi-component blood sample.
  • the multi-component blood sample may include a cellular portion and a plasma portion.
  • the cartridge may include a flow channel having a separation element adapted to separate the cellular portion and the plasma portion of the multi-component blood sample.
  • the separation element may include a plurality of posts.
  • the inlet port may be adapted to receive the multi-component blood sample via connection to a blood collection device.
  • the first collection chamber may be adapted to receive at least a portion of the plasma portion therein, and the second collection chamber may be adapted to receive at least a portion of the cellular portion.
  • the cellular portion is prevented from entering the first collection chamber.
  • the first outlet port may be adapted for connection to a point-of-care testing device for closed transfer of a portion of the plasma portion from the first collection chamber to the point-of-care testing device.
  • a portion of the blood separation cartridge is adapted for connection with a drive device. When the drive device is connected to the blood separation cartridge, the drive device causes flow of the plasma portion from the first collection chamber to the point-of-care testing device.
  • a biological fluid separation device is adapted to receive a multi-component blood sample.
  • the blood separation device includes a separation cartridge having an inlet port and a flow channel defined within the cartridge in fluid communication with the inlet port.
  • the flow channel contains a separation element adapted to separate the multi-component blood sample into at least a first component and a second component.
  • a first collection chamber defined within the cartridge in fluid communication with the flow channel includes a first outlet port, and a second collection chamber defined within the cartridge in fluid communication with the flow channel includes a second outlet port, with the second collection chamber isolated from the first collection chamber.
  • the first component is a cellular portion of the multi-component blood sample and the second component is a plasma portion of the multi-component blood sample.
  • the separation element may include a plurality of posts.
  • the flow channel has a spiral shape.
  • the inlet channel may be provided in fluid communication with the inlet port and the flow channel, with the inlet channel including a sample stabilizer.
  • the second component is a plasma portion of the multi-component blood sample.
  • the first collection chamber is adapted to receive at least a portion of the second component therein and the second collection chamber is adapted to receive at least a portion of the first component.
  • the first component may be a cellular portion of the multi-component blood sample and the second component may be a plasma portion of the multi-component blood sample. In certain embodiments, the cellular portion is prevented from entering the first collection chamber.
  • at least a portion of the flow channel includes a sample stabilizer.
  • the second component may be a plasma portion of the multi-component blood sample.
  • the inlet port is adapted to receive the multi-component blood sample via connection to a blood collection device.
  • the first outlet port may be adapted for connection to a point-of-care testing device for closed transfer of a portion of the second component of the multi-component blood sample from the first collection chamber to the point-of-care testing device.
  • a portion of the blood separation device may be adapted for connection with a drive device. When the drive device is connected to the blood separation device, the drive device causes flow of the second component of the multi-component blood sample from the first collection chamber to the point-of-care testing device.
  • a biological fluid separation and testing system such as a blood separation and testing system, for a multi-component blood sample
  • the blood separation cartridge includes a housing having an inlet port and a flow channel defined within the housing in fluid communication with the inlet port.
  • the cartridge further includes a first collection chamber defined within the housing in fluid communication with the flow channel and including a first outlet port, and a second collection chamber defined within the housing in fluid communication with the flow channel and including a second outlet port.
  • the second collection chamber is isolated from the first collection chamber, and the second outlet port is spaced apart from the first outlet port.
  • the system further includes a blood testing device having a receiving port adapted to receive the first outlet port of the blood separation cartridge for closed transfer of a portion of a component of the multi-component blood sample from the first collection chamber to the blood testing device.
  • the multi-component blood sample includes a first cellular portion component and a second plasma portion component.
  • a portion of the blood separation cartridge may be adapted for connection with a drive device. When the drive device is connected to the blood separation cartridge, the drive device causes flow of the plasma portion from the first collection chamber to the blood testing device.
  • the blood testing device may include a point-of-care testing device.
  • FIG. 1 is a perspective view of a biological fluid separation device in accordance with an embodiment of the present invention.
  • FIG. 2 is a top view of a biological fluid separation device in accordance with an embodiment of the present invention.
  • FIG. 3 is a perspective view of a biological fluid separation device in accordance with an embodiment of the present invention, with a first biological fluid collection device.
  • FIG. 4 is a perspective view of a biological fluid separation device in accordance with an embodiment of the present invention, with a second biological fluid collection device.
  • FIG. 5 is a cross-sectional, top view of a biological fluid separation cartridge in accordance with an embodiment of the present invention.
  • FIG. 6 is a detailed, fragmentary view of a portion of FIG. 5 .
  • FIG. 7 is a perspective view of a biological fluid separation device and a point-of-care testing device in accordance with an embodiment of the present invention.
  • FIG. 8 is a cross-sectional view of a septum of a biological fluid separation device in accordance with an embodiment of the present invention, with the septum in a closed position.
  • FIG. 9 is a cross-sectional view of a septum of a biological fluid separation device in accordance with an embodiment of the present invention, with the septum in an open position.
  • FIG. 10 is a side elevation view of a biological fluid separation device in accordance with an embodiment of the present invention.
  • FIG. 11 is a side elevation view of a biological fluid separation device in accordance with an embodiment of the present invention, with a first component being removed from a second component.
  • Point-of-care testing devices include test strips, glass slides, diagnostic cartridges, or other testing devices for testing and analysis.
  • Test strips, glass slides, and diagnostic cartridges are point-of-care testing devices that receive a blood sample and test that blood for one or more physiological and biochemical states.
  • Testing cartridges such as the i-STAT® cartridges may be used to test for a variety of conditions including the presence of chemicals and electrolytes, hematology, blood gas concentrations, coagulation, or cardiac markers. The results of tests using such cartridges are quickly provided to the clinician.
  • a system of the present disclosure enhances the reliability of the point-of-care testing device by: 1) incorporating a more closed type of sampling and transfer system; 2) minimizing open exposure of the sample; 3) improving sample quality; 4) improving the overall ease of use; and 5) separating the sample at the point of collection.
  • FIGS. 1-11 illustrate an exemplary embodiment of the present disclosure.
  • a biological fluid separation device such as a blood separation device 10
  • a biological fluid separation device 10 of the present disclosure is adapted to receive a blood sample 12 having a cellular portion 14 and a plasma portion 16 .
  • the blood separation device 10 is able to separate the plasma portion 16 from the cellular portion 14 .
  • the blood separation device 10 is able to transfer the plasma portion 16 of the blood sample 12 to a point-of-care testing device.
  • the blood separation device 10 of the present disclosure also provides a closed separation system that reduces the exposure of a blood sample and provides fast mixing of a blood sample with a sample stabilizer.
  • FIG. 7 illustrates an exemplary embodiment of the present disclosure.
  • a biological fluid separation and testing system such as a blood separation and testing system 20 of the present disclosure, includes a blood separation device 10 and a blood testing device or point-of-care testing device 22 engageable with the blood separation device 10 for closed transfer of a portion of the plasma portion 16 ( FIG. 6 ) from the blood separation device 10 to the blood testing device 22 .
  • the blood testing device 22 is adapted to receive the plasma portion 16 to analyze the blood sample and obtain test results.
  • the blood separation device and the blood separation and testing system of the present disclosure are a closed system which reduces blood sample exposure, it provides passive and fast mixing of the blood sample with a sample stabilizer, it facilitates separation of the blood sample without transferring the blood sample to a separate device, and it is capable of transferring pure plasma to a point-of-care testing device.
  • the blood separation device of the present disclosure enables integrated blood collection and plasma creation in a closed system without centrifugation. The clinician may collect and separate the blood sample and then immediately transfer the plasma portion to the point-of-care testing device without further manipulation. This enables collection and transfer of plasma to the point-of-care testing device without exposure to blood.
  • the blood separation device of the present disclosure minimizes process time by processing the blood within the blood separation device and without external machinery. Further, for tests which only require small amounts of blood, it eliminates the waste associated with blood collection and plasma separation with an evacuated tube.
  • a blood separation device 10 includes a first component or biological fluid separation cartridge, such as a blood separation cartridge 11 and a second component or drive device 13 that is removably connected to the blood separation cartridge 11 .
  • the blood separation cartridge 11 is adapted to receive a blood sample 12 having a cellular portion 14 and a plasma portion 16 .
  • a blood separation cartridge 11 is a disposable component and connects with a reusable drive device 13 that is in the shape of a standard pipette which drives the flow of blood through the blood separation cartridge 11 and drives the flow of plasma into a point-of-care testing device 22 .
  • the blood separation cartridge 11 generally includes a housing 30 , an inlet port 32 , a flow channel 34 having an inlet channel 36 and an exit channel 38 , a first collection chamber 40 defined within the housing 30 and in fluid communication with the flow channel 34 and including a first outlet port 42 , a second collection chamber 44 defined within the housing 30 and in fluid communication with the flow channel 34 and including a second outlet port 46 , and a valve or septum 86 disposed at the first outlet port 42 .
  • the second collection chamber 44 is isolated from the first collection chamber 40 and the second outlet port 46 is spaced apart from the first outlet port 42 .
  • the flow channel 34 includes a separation element 50 that is adapted to separate the cellular portion 14 and the plasma portion 16 of the blood sample 12 .
  • the separation element 50 includes a plurality of posts 52 .
  • the inlet channel 36 is in fluid communication with the inlet port 32 .
  • the blood separation cartridge 11 is connectable with the drive device 13 to allow vacuum or pressure to drive flow of a blood sample within the blood separation cartridge 11 .
  • the connection between the blood separation cartridge 11 and the drive device 13 does not allow blood contact with the drive device 13 .
  • the use of materials that only let air to pass, or one way valves, ensures that blood does not come in contact with the drive device 13 .
  • the flow channel 34 has a spiral shape for inertial separation of blood cells, e.g., a cellular portion 14 , from a plasma portion 16 as shown in FIG. 6 .
  • the flow channel 34 includes a plurality of posts 52 arranged to enhance plasma separation by filtering and directing the cellular portion 14 to the outside of the flow channel 34 , which is the same direction the inertial forces drive the cellular portion 14 .
  • the posts 52 can be of any suitable shape, such as rounded, and may have a generally circular cross-section. In another configuration, the posts 52 may have any polygon shape, such as a polygon cross-sectional shape.
  • the flow channel 34 splits into a first collection chamber 40 for collecting the plasma portion 16 and a second collection chamber 44 for collecting the cellular portion 14 .
  • the first collection chamber 40 and the second collection chamber 44 includes no posts 52 to take advantage of laminar flow properties in a microfluidic channel. In one embodiment, to increase throughput, multiple spirals can be fabricated that operate in parallel to generate sufficient plasma volume for a downstream application.
  • the first collection chamber 40 includes the first outlet port 42 which interfaces with a point-of-care testing device 22 or storage vessel as discussed in more detail below.
  • the second outlet port 46 provides an outlet for the cellular portion 14 of the blood sample 12 .
  • the junction point 48 contains a mechanism for substantially preventing the cellular portion 14 from entering the first collection chamber 40 .
  • the junction point 48 may contain a filter or one-way valve or other mechanism.
  • the flow channel 34 is adapted to contain a sample stabilizer to provide passive and fast mixing of a blood sample with the sample stabilizer.
  • the sample stabilizer can be an anticoagulant, or a substance designed to preserve a specific element within the blood such as, for example, RNA, protein analyte, or other element.
  • the sample stabilizer is provided in other areas of the housing 30 of the blood separation cartridge 11 such as the inlet channel 36 . In this manner, as a blood sample 12 flows through the inlet port 32 and into the flow channel 34 , the blood separation device 10 provides passive and fast mixing of the blood sample 12 with the sample stabilizer.
  • the drive device 13 may comprise an electronic durable component that is in the shape of a standard pipette which drives the flow of blood through the blood separation cartridge 11 and drives the flow of plasma into a point-of-care testing device 22 .
  • the drive device 13 drives flow by vacuum or pressure and can actuate any required valves on the blood separation cartridge 11 .
  • the drive device 13 can be battery operated or plugged into a wall outlet in some embodiments or, like some automated pipettes, use induction or plug-in charging with an internal rechargeable battery.
  • the drive device 13 may include an actuation member 60 and flow in or out is controlled by pressing the actuation member 60 on the top of the drive device 13 in a similar location to a plunger on a standard laboratory pipette.
  • the actuation member 60 or buttons may be located in a trigger position on the handle similar to automated serological pipettes.
  • the blood separation cartridge 11 and the drive device 13 are removably connectable theretogether such that significant relative movement between the blood separation cartridge 11 and the drive device 13 is prevented.
  • the blood separation cartridge 11 and the drive device 13 are removably connectable theretogether via engagement of a first securement portion 47 of the blood separation cartridge 11 with a second securement portion 62 of the drive device 13 .
  • similar connection mechanisms may be used.
  • a snap fit engagement mechanism or a friction fit engagement mechanism may be used.
  • the inlet port 32 of the blood separation cartridge 11 is adapted to be connected to a blood collection set or blood collection device 100 to allow for the collection of a blood sample 12 into the blood separation device 10 .
  • the inlet port 32 may be sized and adapted for engagement with a separate device, such as a needle assembly or IV connection assembly and, therefore, may include a mechanism for such engagement as is conventionally known.
  • the inlet port 32 may include a luer lock or luer tip for engagement with an optional separate luer mating component of such a separate device for attachment therewith.
  • a separate device such as a needle assembly or IV connection assembly
  • the inlet port 32 may include a luer lock or luer tip for engagement with an optional separate luer mating component of such a separate device for attachment therewith.
  • the blood collection set 100 may include a luer component 102 for engagement with the inlet port 32 of the blood separation device 10 .
  • the inlet port 32 is connectable to the blood collection set 100 for the collection of a blood sample into the blood separation device 10 .
  • a mechanism for locking engagement between the inlet port 32 and the blood collection set 100 may also be provided.
  • Such luer connections and luer locking mechanisms are well known in the art.
  • the blood collection set 100 may include a needle assembly, an IV connection assembly, a PICC line, an arterial indwelling line, or similar blood collection means.
  • the inlet port 32 may also include a resealable septum that is transitionable between a closed position and an open position. With the septum in an open position, a blood sample 12 may flow through the inlet port 32 to the flow channel 34 via the inlet channel 36 .
  • the blood separation cartridge 11 also may include a valve or septum 86 ( FIGS. 8 and 9 ) at the first outlet port 42 .
  • the first outlet port 42 is adapted for connection to a point-of-care testing device 22 for closed transfer of a portion of the plasma portion 16 from the blood separation device 10 to the point-of-care testing device 22 via the first outlet port 42 as described in more detail below.
  • the valve or septum 86 at the first outlet port 42 is transitionable between a closed position and an open position. With the valve or septum 86 in an open position ( FIG. 9 ), the plasma portion 16 of the blood sample 12 may flow through the first outlet port 42 to a blood testing device or a point-of-care testing device 22 ( FIG. 7 ).
  • a blood testing device or point-of-care testing device 22 includes a receiving port 24 adapted to receive the first outlet port 42 of the blood separation device 10 .
  • the blood testing device 22 is adapted to receive the first outlet port 42 of the blood separation device 10 for closed transfer of a portion of the plasma portion 16 ( FIG. 6 ) from the blood separation device 10 to the blood testing device 22 .
  • the blood testing device 22 is adapted to receive the plasma portion 16 to analyze the blood sample and obtain test results.
  • the first outlet port 42 of the blood separation device 10 may include a valve or septum 86 that is transitionable between a closed position and an open position. With the valve or septum 86 in an open position ( FIG. 9 ), the plasma portion 16 of the blood sample 12 may flow through the first outlet port 42 to a blood testing device or a point-of-care testing device 22 ( FIG. 7 ).
  • the valve 86 may generally include a transfer channel 90 , a bellows or deformable wall member 92 , and a septum or barrier 94 having a first barrier wall 96 and a second barrier wall 98 .
  • the valve 86 is in a closed position to prevent the plasma portion 16 of the blood sample 12 from flowing through the first outlet port 42 . In this manner, the plasma portion 16 is sealed within the blood separation device 10 .
  • the valve 86 is in an open position so that the plasma portion 16 of the blood sample 12 may flow through the first outlet port 42 to a blood testing device or a point-of-care testing device 22 ( FIG. 7 ).
  • the first outlet port 42 of the blood separation device 10 is then positioned over the receiving port 24 of the point-of-care testing device 22 .
  • Pushing down in the direction of arrow B compresses the deformable wall member 92 and opens up the first barrier wall 96 and the second barrier wall 98 of the septum 94 as shown in FIG. 9 .
  • the valve 86 With the valve 86 in the open position, the plasma portion 16 of the blood sample 12 is allowed to flow through the first outlet port 42 and the receiving port 24 to the point-of-care testing device 22 in a closed manner, reducing exposure to the clinician and the patient.
  • the valve 86 of the blood separation device 10 only opens when the first outlet port 42 is pressed upon the receiving port 24 of the point-of-care testing device 22 . This releases the isolated plasma portion 16 directly into the receiving port 24 of the point-of-care testing device 22 , thus mitigating unnecessary exposure to the patient's blood.
  • the drive device 13 is connectable with any number of blood separation cartridges 11 .
  • a blood separation cartridge 11 is a replaceable single use component.
  • the blood separation cartridge 11 can be removed from the drive device 13 , as shown in FIG. 11 , and the blood separation cartridge 11 can be disposed of into a biological hazard container.
  • a new and clean blood separation cartridge 11 can be selected and used with the drive device 13 .
  • One advantage of the blood separation system of the present disclosure is that a plurality of blood separation cartridges 11 can be used with the drive device 13 .
  • the drive device 13 can be repeatedly used.
  • the inlet port 32 of the blood separation device 10 is adapted to be connected to a blood collection set 100 to allow for the collection of a blood sample 12 into the blood separation device 10 as discussed above.
  • the actuation member 60 of the drive device 13 is activated, e.g., a power switch is pushed down, to draw the blood sample into the flow channel 34 of the blood separation cartridge 11 .
  • the blood sample 12 slowly fills the blood separation device 10 , it is collected and stabilized over a layer of sample stabilizer.
  • the blood sample 12 may then flow through the flow channel 34 for inertial separation of the cellular portion 14 from the plasma portion 16 .
  • the series of posts 52 are arranged to enhance plasma separation by filtering and directing the cellular portion 14 to the outside of the flow channel 34 , which is the same direction that the inertial forces drive the cellular portion 14 .
  • the flow channel 34 splits into a first collection chamber 40 for collecting the plasma portion 16 and a second collection chamber 44 for collecting the cellular portion 14 .
  • the first collection chamber 40 and the second collection chamber 44 include no posts 52 to take advantage of laminar flow properties in a microfluidic channel. In one embodiment, to increase throughput, multiple spirals can be fabricated that operate in parallel to generate sufficient plasma volume for a downstream application.
  • the first collection chamber 40 includes the first outlet port 42 which interfaces with a point-of-care testing device 22 or storage vessel.
  • the blood separation device 10 may be engaged with a blood testing device 22 .
  • the first outlet port 42 is placed over the receiving port 24 of the point-of-care testing device 22 as shown in FIG. 7 .
  • the actuation member 60 of the drive device 13 may be activated or depressed to advance the plasma portion 16 and to transfer the collected plasma portion 16 to the point-of-care testing device 22 .
  • the blood testing device 22 is adapted to receive the first outlet port 42 of the blood separation device 10 for closed transfer of a portion of the plasma portion 16 from the blood separation device 10 to the blood testing device 22 .
  • the blood testing device 22 is adapted to receive the plasma portion 16 to analyze the blood sample and obtain test results.
  • the blood separation cartridge 11 can be removed from the drive device 13 , as shown in FIG. 11 , and the blood separation cartridge 11 can be disposed of into a biological hazard container.
  • the blood separation system of the present disclosure relies on inertial forces and a gentler filtration to generate plasma.
  • the filtration posts are made of the same material as the device so analyte bias and passivation is the same for the posts as the parent device.
  • the blood separation device and the blood separation and testing system of the present disclosure is a closed system which reduces blood sample exposure, it provides passive and fast mixing of the blood sample with a sample stabilizer, it facilitates separation of the blood sample without transferring the blood sample to a separate device, and it is capable of transferring pure plasma to the point-of-care testing device 22 .
  • the blood separation device of the present disclosure enables integrated blood collection and plasma creation in a closed system without centrifugation. The clinician may collect and separate the blood sample and then immediately transfer the plasma portion to the point-of-care testing device 22 without further manipulation. This enables collection and transfer of plasma to the point-of-care testing device 22 without exposure to blood.
  • the blood separation device of the present disclosure minimizes process time by processing the blood within the blood separation device and without external machinery. Further, for tests which only require small amounts of blood, it eliminates the waste associated with blood collection and plasma separation with an evacuated tube.

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