WO2024024039A1 - 血液保存容器および血液採取器具 - Google Patents
血液保存容器および血液採取器具 Download PDFInfo
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- WO2024024039A1 WO2024024039A1 PCT/JP2022/029137 JP2022029137W WO2024024039A1 WO 2024024039 A1 WO2024024039 A1 WO 2024024039A1 JP 2022029137 W JP2022029137 W JP 2022029137W WO 2024024039 A1 WO2024024039 A1 WO 2024024039A1
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- blood
- storage container
- axial direction
- blood collection
- container
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
- A61J1/00—Containers specially adapted for medical or pharmaceutical purposes
- A61J1/05—Containers specially adapted for medical or pharmaceutical purposes for collecting, storing or administering blood, plasma or medical fluids ; Infusion or perfusion containers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
Definitions
- the present invention relates to a blood sampling device and a blood storage container used for collecting minute amounts of blood and preparing, storing, and analyzing blood samples.
- Blood tests and other tests that analyze human body fluids as samples are performed to closely examine the manifestation of diseases and examine the state of health of the body.
- blood collection is known as venous blood collection, such as syringe collection by puncturing a brachial vein. Venous blood sampling may be difficult for infants, small blood vessels, or fragile patients. In such cases, it is known to collect peripheral blood from a fingertip or the like as a test sample.
- Test samples required for blood tests in various fields such as chemistry, immunology, and hematology generally require a volume of several microliters to several tens of microliters per test item.
- techniques have been widely disclosed that allow a trace amount of blood to be collected and analyzed with high sensitivity.
- a method in which a predetermined amount of blood is aspirated from a small amount of blood bled by pricking a fingertip with a lancet using a blood sampling tool or the like.
- This method of collecting peripheral blood samples is minimally invasive, reduces the risk of contamination with body blood and hemolysis due to insufficient blood sampling capacity or pressure during bleeding, and collects as small a volume as possible that is necessary and sufficient for testing. It is advisable to take blood.
- blood cells red blood cells, white blood cells, platelets
- centrifugation techniques are widely used as a standard method for separating blood cells and plasma (serum).
- venous blood collection it is known that 1 ml or more of blood is collected using a syringe, and the blood cells and plasma are centrifuged using a separating agent sealed in a test tube in advance.
- a separating agent sealed in a test tube in advance.
- the amount of plasma that can be aspirated on average is about 15 ⁇ l, and the plasma yield is about 25% even though the volume ratio of the plasma sample to the total blood volume is 55%. Therefore, when performing a minute blood test from a fingertip or the like, it is common to collect approximately four times the amount of sample of plasma or the like required for the test.
- a membrane separation method is sometimes used that uses multiple permeable membranes to separate plasma from a small amount of blood sample, rather than centrifugation.
- the blood collection device used in this method sucks the blood collected at the punctured fingertip into a filter containing an anticoagulant, and then drops the filter into a buffer solution and shakes it.
- a test sample is prepared by filtering the mixed solution of blood and buffer solution through a membrane to separate blood cells and plasma.
- the test sample prepared by this method is a plasma sample obtained by diluting whole blood in a non-quantitative manner and separating it by membrane permeation. Spilling of blood cell solution into the diluent may occur.
- a device called a capillary which utilizes capillary action, is generally used to collect blood collected from a fingertip or the like.
- Blood stored in a fingertip or the like is subjected to a force that tries to shrink the liquid level due to surface tension, and as a result, the liquid level is pushed up. Since the force pushing up the liquid level is equal to the vertical component of the surface tension near the wall surface, a capillary phenomenon occurs that pushes up the liquid level inside the capillary until this force and the weight of the sucked up liquid balance out.
- the tip is brought into contact with the surface of blood cells, and an appropriate amount of minute blood is collected using capillary action.
- Capillaries are generally straight glass tubes with a length of about 10 mm, an inner diameter of 1 mm or less, and a thickness of about 0.2 mm, and are used by third parties such as doctors and nurses to collect blood from a few microliters to several tens of microliters. It is often done.
- a method is sometimes used in which blood collected at a fingertip or the like is directly poured into a storage container with a tongue. This method is generally performed by a skilled third party, such as a doctor or nurse, because the blood that has been sufficiently collected in the fingertip must be stored in a storage container without flowing or falling.
- Blood sampling devices for self-collecting small amounts of blood from a fingertip or other source without relying on a third party are generally not capillaries or containers with tongues, but are often dedicated blood sampling devices designed for self-collection.
- a plastic tube having a capillary suction section with a tip diameter of approximately 0.5 mm to 1.0 mm and a tapered conical outlet structure connected to the capillary suction section may be used.
- the tip of a blood sampling device is brought into contact with the blood collected at the fingertip after puncturing it with a lancet or the like from diagonally below, and the blood is suctioned by capillary action and flows into the container under the pressure of its own weight.
- the wall surface of plastic has hydrophobic properties, it becomes water-repellent when the tip comes into contact with blood, and capillary suction force cannot be exerted as it is. Therefore, when a plastic tube is generally used as a blood sampling device that utilizes capillarity, countermeasures are taken to ensure contact suction, such as making the inner wall surface hydrophilic.
- Patent Documents 1 and 2 have already been proposed as techniques related to this type of general blood collection.
- a method often used is to puncture the fingertip with a lancet and aspirate the small amount of blood collected at the puncture site with a plastic blood collection tip.
- the amount of blood necessary for the test usually several tens of microliters to 100 microliters, flows into the hemolysis device by creating an inclined shape like a pipette tip from the capillary tip.
- a suction tool is used to draw blood into the hemolysis tool. It is necessary to have an inflow.
- the separated plasma portion is diluted with a diluent and the diluted plasma solution is used as a sample, and the blood cell portion is hemolyzed to measure the components. do.
- a fixed amount of plasma is dispensed, and the liquid is diluted with a fixed amount of diluent to create a constant dilution plasma solution. If a constant dilution plasma solution is measured as a test sample, the reported value shall be the actual measured value multiplied by the dilution rate. In this dilution operation, accurate dispensing of a predetermined amount is essential to maintain inspection accuracy.
- the plasma part and the blood cell part are not physically separated and there is a direct contact separation surface between the blood cells and plasma, for example, when 30 ⁇ l of blood is centrifuged in a 3 mm diameter container, The upper plasma volume is only 2 mm deep, making it difficult to dispense accurately and in a sufficient amount.
- a blood sample is left without physically separating the blood cells and plasma (serum) after collection or centrifugation, components in the blood cells, such as glucose and urea nitrogen, will spill out into the plasma (serum) portion and affect the analysis results. influence Therefore, when it takes a certain amount of time to carry out a test, such as when transporting a specimen after blood collection, it is necessary to physically separate plasma and blood cells. For this separation, a centrifugal separation technique using a separating agent is generally used.
- the amount of blood required for analysis varies depending on the test items and their combinations.
- various tests can be performed by generally collecting a quantitative amount of blood of 1 ml or more, but on the other hand, much of the collected blood becomes surplus and is discarded.
- micro blood tests in order to reduce the invasiveness of the user and make the most of the limited amount of blood collected, we set a sample concentration range for each item that allows for highly sensitive measurements. Dilute the sample within the chamber, secure the amount of sample necessary for the test, and perform the measurement.
- the blood collection amount and dilution rate (diluted sample amount) are set fixedly. For this reason, inspection items and item combinations have to be fixed, making it difficult to set items flexibly according to the inspection purpose.
- the present invention has been developed to quickly and easily collect a small amount of blood stored at a fingertip, etc. according to the required amount of blood that changes depending on the test purpose, and add the blood in the same container.
- the purpose of the present invention is to provide a blood storage container and a blood sampling device to reduce the burden and stably and efficiently perform tests related to blood item analysis.
- One aspect of the present invention is a blood storage container that stores and preserves collected blood, and includes a storage container configured in a hollow shape and an airtight container attached to an end of the storage container.
- the container is continuous with a blood collection space in which a first opening connected to a blood collection chip is formed on one axial side, and the other end of the blood collection space in the axial direction, and has a smaller cross section than the blood collection space.
- the airtight container has a lid portion movably placed along the axial direction so as to cover the second opening on the other axial side of the storage space of the storage container, and a lid portion on the inside of the lid portion.
- the blood storage container has a closed container shaft that is formed to protrude and is movable in the axial direction while in contact with the inner surface of the storage space.
- FIG. 1 is a longitudinal sectional view showing an assembled state of a blood sampling device according to an embodiment of the present invention.
- FIG. 2 is an exploded perspective cross-sectional view showing the configuration of a blood sampling device.
- FIG. 2 is a cross-sectional view showing the configuration of a container lid that closes the containment container.
- FIG. 3 is a cross-sectional view showing how the blood sampling device is used.
- FIG. 2 is a cross-sectional view showing a blood sampling method using a blood sampling device.
- FIG. 3 is a cross-sectional view showing how to use the blood sampling device.
- FIG. 2 is a cross-sectional view showing a centrifugation method using a blood storage container.
- FIG. 3 is a cross-sectional view showing a method of dispensing blood cells from a blood storage container.
- FIG. 3 is a cross-sectional view showing a method of measuring plasma in a blood storage container.
- FIG. 3 is a cross-sectional view showing a method for discharging blood from a blood sampling device.
- FIG. 7 is an exploded perspective view showing the configuration of a blood sampling device according to a modified example.
- FIG. 7 is a perspective cross-sectional view showing the configuration of a blood sampling chip according to a modified example.
- XYZ axes are set orthogonal to each other, the Z-axis direction is referred to as the axial direction, the +Z side of the Z-axis is referred to as one axial side, the -Z side is referred to as the other axial side, etc.
- the blood sampling device 1 includes a blood sampling chip 400 for collecting blood, and a blood storage container 10 to which the blood sampling chip 400 is attached.
- the blood storage container 10 is formed to store and preserve blood collected by the blood collection chip 400.
- the blood storage container 10 includes a storage container 100 in which a blood collection space 102 for storing blood is formed, a closed container 300 in which a storage space 302 for storing blood is formed, and a dial part 350 provided in the closed container 300. Equipped with.
- the blood storage container 10 is sealed with a container lid 200, which will be described later, in place of the blood collection chip 400.
- the storage container 100, the sealed container 300, and the blood collection chip 400 are preferably made of a transparent, hard polymer compound material such as polycarbonate or acrylonitrile butadiene styrene, so that blood collection, blood separation, and blood storage can be monitored from the outside. Can be easily recognized visually.
- the containment vessel 100 and the closed vessel 300 communicate with each other through a narrow separation channel 10R having a predetermined length.
- a small amount of blood is sealed in the storage container 100.
- the blood storage container 10 is centrifuged as described below, and upon completion of centrifugation, the plasma portion is stored in the storage container 100 and the blood cell portion is stored in a sealed container 300 in a physically separated state.
- the blood storage container 10 is provided with a stopper 250, which is a mechanism for sealing the separation channel 10R after centrifugation.
- the stopper 250 seals the separation channel 10R based on a pushing operation.
- the stopper 250 closes the separation channel 10R and maintains a physically separated state in which the plasma part stored in the storage container 100 and the blood cell part stored in the closed container 300 do not mix again.
- the storage container 100 is, for example, formed in a cylindrical shape.
- a blood collection space 102 is formed inside the storage container 100 to store a small amount of blood.
- the cross-sectional shape (cross section) of the blood collection space 102 perpendicular to the axial direction is circular.
- a circular first opening 101 is formed at one end of the blood collection space 102 in the axial direction.
- a blood sampling chip 400 which will be described later, is connected to the first opening 101.
- a radially protruding flange portion 101F is formed on the outer circumferential surface of one end of the blood collection space 102 in the axial direction.
- the blood collection chip 400 is removed and a container lid 200 (see FIG. 3), which will be described later, is attached to the first opening 101.
- the blood collection space 102 is sealed by the container lid 200.
- the blood storage container 10 can perform all testing operations from blood collection to sample transportation, centrifugation, and sample measurement without dispensing the sample.
- a first tapered portion 103 whose cross-sectional area decreases toward the end is formed on the other side in the axial direction of the blood collection space 102 .
- the first tapered portion 103 is formed as a solution reservoir.
- the other end of the first tapered portion 103 in the axial direction is continuous with a separation flow path 10R, which will be described later. That is, the blood collection space 102 is formed so as to be continuous with the separation channel 10R on the other side in the axial direction.
- a closed container 300 is provided on the other axial side of the containment container 100 .
- the blood stored in the storage container 100 is stored in the closed container 300.
- the closed container 300 is formed into a cylindrical shape.
- a storage space 302 for storing blood is formed inside the closed container 300.
- the cross-sectional shape (cross section) of the storage space 302 perpendicular to the axial direction is circular.
- a second tapered portion 303 whose cross-sectional area increases toward the storage space 302 is formed on one side of the storage space 302 in the axial direction.
- One axial end of the second tapered portion 303 is continuous with the separation channel 10R.
- the storage space 302 is continuous with the blood collection space 102 via the separation channel 10R.
- the separation channel 10R is formed so that the blood collection space 102 and the storage space 302 are continuous.
- the cross section of the separation channel 10R is smaller than the cross section of the blood collection space 102.
- the cross section of the separation channel 10R is formed smaller than the cross section of the storage space 302. That is, the cross section of the storage space 302 is formed larger than the cross section of the separation channel 10R.
- the storage space 302 is formed in a cylindrical shape.
- a circular second opening 301 is formed at the other end of the storage space 302 in the axial direction.
- a protrusion 304 having a second opening 301 and protruding toward the other axial side is formed at the other end of the closed container 300 in the axial direction.
- the outer circumferential surface 305 of the protrusion 304 is formed to bulge in the radial direction.
- a dial portion 350 is rotatably fitted into the protrusion 304 .
- the dial portion 350 includes a plunger 360 that protrudes along the axis L direction.
- a fitting portion 351 that fits into the protrusion 304 is provided at one end of the dial portion 350 in the axial direction.
- An inner circumferential surface 352 of the fitting portion 351 is formed to be concave in the radial direction.
- the inner circumferential surface 352 of the fitting portion 351 fits into the outer circumferential surface 305 of the protruding portion 304 .
- the dial part 350 is rotatably provided on the other axial side of the closed container 300.
- Two slits 354 are formed in the dial portion 350 symmetrically with respect to the axis L so as to cut out the outer circumferential surface and the inner circumferential surface along the axis L direction.
- the slit width of the slit 354 is reduced by pressing the outer peripheral surface.
- the fitting portion 351 deforms to expand in the radial direction as the slit width decreases, and the fitting between the inner circumferential surface 352 and the outer circumferential surface 305 of the protruding portion 304 is released.
- the dial portion 350 is removed from the closed container 300 together with the plunger 360 when the fitting portion 351 and the outer circumferential surface 305 of the protruding portion 304 are disengaged. That is, when the outer peripheral surface of the dial portion 350 is strongly pressed from both lateral directions, the width of the slit 354 is reduced, the fitting portion 351 is widened, and the dial portion 350 is removed from the protruding portion 304. Since the plunger 360 is also removed from the closed container 300 together with the dial portion 350, the plunger 360 can be pulled out from the storage space 302.
- a through hole 353 is formed in the dial portion 350 along the axis L direction.
- a thread groove 353M is formed in the through hole 353.
- a threaded portion 361 formed on the plunger 360 is screwed into the through hole 353 .
- the plunger 360 is provided inside the dial portion 350 so as to protrude along the axial direction.
- a head 362 having a circular cross section is formed at one end of the plunger 360 in the axial direction.
- the outer diameter of the head 362 is slightly smaller than the inner diameter of the storage space 302.
- the head 362 is formed into a piston shape.
- the head 362 is configured to be able to slide along the axis L while being in close contact with the inner surface of the storage space 302 .
- the head 362 is inserted into the storage space 302 from the second opening 301.
- the dial part 350 is rotated around the axis L
- the screw part 361 rotates with respect to the through hole 353, and the plunger 360 moves along the axis with the head 362 in close contact with the inner surface of the storage space 302. It becomes movable along the L direction.
- the storage container 100 and the sealed container 300 are formed with a perfect circular cross section in consideration of the ease of the manufacturing process and the rotation of the threaded portion 361 and the threaded groove 353M, as well as the rotation of the plunger 360 due to the rotation. be done.
- the containment vessel 100 and the closed vessel 300 may be formed in a cross-sectional shape other than a perfect circle at a portion that does not involve relative rotation.
- the containment vessel 100 and the sealed container 300 may have, for example, a polygonal or non-circular cross-sectional shape on the outer circumferential surface for the purpose of improving handling properties, or may have irregularities formed on the outer circumferential surface as appropriate. Good too.
- through holes 10S are continuously formed in a direction perpendicular to the axis L.
- a stopper 250 is fitted into the through hole 10S.
- the stopper 250 includes a pressing portion 251 for performing a pushing operation, and a sliding portion 252 inserted into the through hole 10S.
- the sliding part 252 moves along the through hole 10S, closes the separation flow path 10R, and blocks the blood collection space 102 and the storage space 302.
- the sliding part 252 moves along the through hole 10S and opens the separation channel 10R. Thereby, the blood collection space 102 and the storage space 302 communicate with each other.
- the stopper 250 is provided in the separation flow path 10R so as to be movable in a direction intersecting the axis L direction, and is provided so as to communicate with or shield the blood collection space 102 and the storage space 302.
- the separation channel 10R is closed.
- By closing the separation channel 10R using the stopper 250 it is possible to maintain a physically separated state in which the plasma part stored in the storage container 100 and the blood cell part stored in the closed container 300 do not mix again. can.
- the blood collection chip 400 is detachably attached to one axial side of the storage container 100 so as to close the first opening 101.
- the blood collection chip 400 is formed into a cylindrical shape having a conical shape as a whole.
- the blood sampling chip 400 includes a blood sampling section 401 provided on one axial side, and a connecting section 405 provided on the other axial side.
- the blood sampling section 401 is formed in a tapered shape in which the cross-sectional area of the blood sampling section 401 decreases toward one end in the axial direction.
- a flow path 430 (see FIG. 4) is formed along the axis L direction.
- a blood sampling opening 403 is formed at one axial end of the blood sampling section 401 so that a part of the inner circumferential surface 430H of the flow path 430 is exposed.
- a connection opening 405H that communicates with the blood collection opening 403 is formed at the other axial end of the connection portion 405 of the blood collection unit 401 .
- the blood sampling opening 403 is formed to be sealed by covering it with a cap 500, which will be described later.
- the blood sampling opening 403 is formed to have an inner diameter of 0.5 mm to 1.5 mm, for example.
- the blood sampling opening 403 is formed so that blood serving as a sample comes into contact with a portion of the exposed inner circumferential surface of the flow path 430, so that the blood flows into the flow path 430 based on capillary action.
- the blood sampling opening 403 is formed in a shape cut at an angle with respect to the axis L direction.
- the blood sampling opening 403 is formed by cutting an angle in the range of 30 degrees to 45 degrees, preferably around 40 degrees with respect to the axis L direction.
- the blood sampling opening 403 is formed in an inclined shape that is linear or curved in accordance with the shape of the blood droplet with respect to the axis L direction.
- the blood sampling section 401 has a blood sampling opening 403 formed therein, thereby eliminating the need for hydrophilic treatment in the channel 430 and allowing blood to flow into the channel 430 based on capillary action. Can be done.
- an upward mark 409 indicating the upward direction of the blood sampling opening 403 at the time of blood sampling, and a measurement line 408 serving as an index for confirming the amount of blood to be sampled from the outside are formed.
- the metering lines 408 are marked, for example, at 50 ⁇ l and 100 ⁇ l.
- the connecting portion 405 is provided on the other axial side of the blood sampling chip, and is inserted into the blood sampling space 102 from the first opening 101 on one axial side of the storage container 100 .
- the outer circumferential surface of the connecting portion 405 is formed to have an outer diameter that allows the connecting portion 405 to be inserted densely into the first opening 101 of the containment vessel 100 .
- the connecting portion 405 is removably attached to the containment vessel 100 so as to close the first opening 101 .
- At least one first groove 406 is formed along the axial direction on the outer peripheral surface of the connecting portion.
- first groove portions 406 are formed, and the width is approximately 1 mm.
- the first groove portion 406 is formed to function as an air vent during blood suction and container storage of collected blood.
- a stepped portion 407 that contacts the flange portion 101F is formed around the connecting portion 405.
- the stepped portion 407 is formed to have a larger outer diameter than the outer diameter of the outer peripheral surface of the connecting portion.
- connection opening 405H The other axial side of the inner peripheral surface 430H of the blood collection chip 400 is a connection opening 405H that communicates with the opening 140 of the storage container.
- the connection opening 405H is formed to have an inner diameter of 8 mm to 15 mm, for example.
- Blood collection chip 400 is replaced with container lid 200 at first opening 101 .
- the container lid 200 is formed to close the first opening 101.
- the outer diameter of the outer circumferential surface of the container lid 200 is formed to fit tightly into the inner circumferential surface of the first opening 101.
- a radially projecting flange portion 220 is formed at one end of the container lid 200 in the axial direction.
- the flange portion 220 contacts the flange portion 101F around the first opening 101 of the containment vessel 100.
- a disk-shaped bottom portion 210 that closes the first opening 101 is formed at the other end of the container lid 200 in the axial direction.
- the container lid 200 is inserted into the blood collection space 102 of the storage container 100 to a predetermined depth through the first opening 101, and seals the blood collection space 102.
- the blood sampling device 1 can store the sample aspirated by the blood sampling chip 400 in the storage container 100.
- the sample By attaching a container lid 200 to the storage container 100, the sample can be centrifuged and the centrifuged plasma can be sealed.
- the blood sampling device 1 can store and seal centrifuged blood cells in a closed container 300 provided at the lower part of the storage container 100 through the separation channel 10R.
- the airtight container 300 can store and seal centrifuged blood cells so that the amount of blood cells can be adjusted.
- an additive 21, which will be described later, containing an anticoagulant such as EDTA, heparin, sodium citrate, and sodium fluoride can be preliminarily sealed or coated on the inner wall surface as shown in FIG.
- the storage container 100 can be filled with a solution 20 in which the additive is dissolved.
- the solution 20 filled in the storage container 100 is an aqueous solution in which a predetermined amount of EDTA, heparin, sodium citrate, sodium fluoride, etc. is dissolved in physiological saline, phosphate buffer, Good's buffer, or the like.
- the storage container 100 After the storage container 100 is sealed with an additive 21 or filled with a solution 20 in which the additive is melted, it is sealed with a container lid 200 and stored until blood collection.
- a storage container 100 filled with a solution 20 containing melted additives immediately before blood collection, remove the container lid 200 from the storage container 100, attach the blood collection chip 400, and then tip it over to drain the entire solution 20 into the blood collection chip 400. After that, remove the blood collection tip and discard all the additive solution.
- a wet state is created in which a predetermined amount of the additive 21 remains on the inner wall 130 of the storage container and the flow path 430 of the blood collection chip.
- the blood sampling opening 403 at the tip of the blood sampling tip 400 has a narrow tube with a diameter in the range of 0.5 mm to 1.2 mm, preferably around 0.8 mm, in the range of 30° to 45°, preferably.
- the angle cut is around 40°.
- the blood sampling chip 400 collects a blood sample using the tapered blood sampling portion 401 having a flow path 430 that connects the blood sampling opening 403 and the connecting opening 405H in the range of 6 mm to 12 mm, preferably around 8 mm. Can be collected.
- the first groove part 406 is formed in the connection part 405 of the blood sampling chip 400, when the blood sampling opening 403 is brought into contact with the upper part of the stored sample to aspirate the sample, the first groove part 406 is formed. Air can be expelled from 406 and a blood sample can be aspirated through blood collection opening 403.
- the first groove portion 406 provided in the connecting portion 405 of the blood sampling tip 400 releases the airtightness of the storage container 100, so after collecting the blood sample, the container can be placed vertically with the tip upward. By leaving it still, the blood sample sucked into the blood collection chip 400 can be moved to the storage container 100 side by its own weight.
- the blood sampling device 1 after storing blood in the storage container 100, the blood sampling chip 400 is removed from the blood storage container 10, and the included container lid 200 is set to seal the blood sampling space 102 of the storage container 100. Can be done.
- the blood storage container 10 can be directly set in a tester via the adapter 600, and then placed in a centrifuge. . At this time, the blood storage container 10 is centrifuged at 500G to 1500G, preferably around 1000G, for 2 to 5 minutes, preferably around 3 minutes.
- the adapter 600 includes a cylindrical portion 601 that fills the gap between the outer peripheral surface of the containment vessel 100 and the inner peripheral surface of the test tube 800, and a flange portion 602 that contacts and positions the upper end of the test tube 800. .
- plasma separated in the storage container 100 can be stored in the blood collection space 102 above the separation channel 10R, and blood cells can be stored in the closed container 300 at the bottom of the separation channel 10R.
- the stopper 250 is inserted into the separation channel 10R to block the storage container 100 and the closed container 300, and the plasma part and the blood cell part can be physically completely separated. .
- the dial portion 350 is rotated, the plunger 360 is moved along the axis L direction, After adjusting the capacity of the storage space 302, recentrifugation is performed for a short period of about 20 to 30 seconds, and then the stopper 250 is inserted to block the plasma portion and the blood cell portion. If it is desired to take out the plasma immediately, the container lid 200 is removed from the blood storage container 10 and the plasma portion is dispensed. Since only the separated plasma is stored in the storage container 100, the required amount can be sucked up to the maximum amount without waste.
- a certain amount of diluent for example, about 100 ⁇ l to 500 ⁇ l, preferably around 200 ⁇ l, of a special diluent is directly injected into the blood collection space 102 of the storage container 100 and mixed evenly with plasma to prepare a test sample. can do.
- the adapter 600 is set in the container after dilution and mixing, and the mixture is put into a test tube and subjected to the testing device as it is.
- the blood cells separated and sealed in the airtight container 300 are dispensed directly from the airtight container 300 into a sample cup by removing the dial part 350 and the plunger 360, and are used as a test sample.
- the dial portion 350 is provided with two symmetrical slits 354, and by pinching the dial portion from the side, the width of the slits 354 is reduced and the fitting portion 351 is expanded, and the closed container 300 is closed.
- the dial part 350 is removed from the protrusion 304, and the plunger 360 can be pulled out from the storage space 302.
- the user collects blood based on the blood sampling amount of 50 ⁇ l, 100 ⁇ l, or 200 ⁇ l marked on the measurement line 408 of the blood collection chip 400.
- a guideline for the required amount of blood to be collected is presented in advance based on a combination of measurement items.
- the user not only collects the amount of blood necessary for the measurement item, but also selects and changes test items as appropriate based on the amount of blood that can actually be collected into the blood sampling chip 400. It is also possible to do so, and the collected blood can be used without wasting it.
- the user can perform reliable plasma separation by adjusting the position of the plunger 360 in advance by turning the dial part 350 according to the amount of blood to be collected, and adjusting the capacity of the storage space 302. Can be done.
- the storage container 100 is used with a blood sampling tip 400 connected to its tip when collecting blood.
- the first groove 406 provided on the outer wall of the proximal end 410 releases the sealed state inside the container, making it possible to aspirate blood.
- reference numeral 2 indicates the surface of the fingertip viewed from the direction of the tip.
- the surface of a finger is a convex curved surface, but for convenience of explanation, it is expressed as a flat surface.
- the bleeding blood B is pooled in the form of water droplets on the fingertip due to surface tension.
- the blood sampling opening 403 With the upward mark 409 of the blood sampling chip 400 facing upward in this droplet-like blood B, the blood sampling opening 403 is brought into close contact with the upper surface of the stored blood from the side or from below the side without any gaps.
- the blood collection device 1 As shown in FIG. 6, after blood collection is completed, the blood collection device 1 is maintained vertically with the blood collection chip 400 and the storage container 100 connected. At this time, since an air passage is secured in the flow path 430 by the first groove portion 406, air can flow into the flow path 430. Thereby, the blood sample B1 falls naturally into the storage container 100 from within the flow path 430 of the blood sample chip 400 without being dispensed based on the action of its own weight.
- the blood collection chip 400 is extracted from the storage container 100.
- a container lid 200 is inserted into the first opening 101 of the storage container 100 .
- the storage container 100 is sealed with a container lid 200.
- the blood collection B1 is sealed and stored.
- the sealed storage container 100 is repeatedly overturned, and the blood sample B1 and the pre-filled additive component 21 (see FIG. 3) are mixed. Thereby, the blood sample B1 is managed in an appropriate storage state.
- the blood sample B1 moved to the storage container 100 is then centrifuged.
- This centrifugation is preferably carried out at a relatively low rotation speed in the range of 500G to 1,500G, preferably at a centrifugal acceleration of around 1,000G.
- the gravitational load on the separation channel 10R of the storage vessel 100 and the storage space 302 is reduced, and stable separation can be performed.
- plasma B2 accumulates in the blood collection space 102, and blood cells B3 accumulate in the storage space 302.
- the storage state of the blood cells B3 separated and stored in the storage space 302 can be confirmed from the outside.
- the position of the plunger 360 is adjusted by rotating the dial part 350, the capacity of the storage space 302 is increased, and recentrifugation is performed for a short time of about 20 to 30 seconds.
- the separation state is optimized by
- the stopper 250 is pushed in after centrifugation is completed.
- the stopper 250 closes off the separation channel 10R.
- the plasma part and the blood cell part can be physically separated between the storage container 100 and the closed container 300.
- the blood storage container 10 rotates the plunger 360 along the axis L direction within a distance defined by the thread pitch based on the rotation of the threaded portion 361 provided on the plunger 360 and the threaded groove 353M of the dial portion 350.
- the capacity of the storage space 302 that stores the blood cells B3 can be readjusted. Therefore, the user can efficiently prepare separated specimens of plasma and blood cells while checking the separation status of plasma and blood cells.
- the dial portion 350 since the dial portion 350 is provided, fine adjustment is possible by appropriately setting the pitch per rotation of the threaded portion 361 of the plunger 360 and the threaded groove 353M according to the desired accuracy. It becomes possible. According to the blood storage container 10, the volume can be finely adjusted in units of 2 to 3 ⁇ l per rotation, for example, one rotation or two rotations, which the user can easily operate. Note that instead of the threaded portion 361 and the threaded groove 353M of the plunger 360, if the amount of movement of the plunger 360 can be adjusted, other materials may be used, such as a minute uneven fitting portion that has a click feeling that can be sensed by the operator. A configuration may be provided.
- the blood storage container 10 for example, if the blood cell ratio of the blood sample is higher than the initial setting value and some of the blood cells remain in the storage container 100 after centrifugation, the capacity of the closed container 300 is increased; On the other hand, if the amount of blood collected is insufficient and the amount of plasma is low, the effective volume of the storage space 302 can be adjusted to a smaller value by rotating the dial portion 350 and adjusting the position of the plunger 360. Thereafter, by centrifuging the blood storage container 10 again for a short time, separation of plasma and blood cells can be accurately completed.
- the plasma part in the collected blood can be separated to a volume close to the maximum volume.
- the initial blood cell volume ratio is set small to about 35% for women and 40% for men, and the storage space 302 is finely adjusted to the correct size depending on the state of blood cell storage in the closed container 300 after centrifugation, and centrifugation is performed again.
- the blood storage container 10 it is possible to easily optimize the plasma and blood cell volumes, which differ for each individual blood sample, even when collecting blood from elderly people who are concerned about the relatively small amount of blood collected.
- the storage container 100 and the container lid 200 have an appropriate thickness to withstand external forces associated with storage, transportation, operation, and centrifugation, and have reliable airtightness.
- the volume inside the storage container 100 when the container lid 200 is closed is small, ranging from 300 ⁇ l to 400 ⁇ l.
- concentration changes due to environmental factors such as water evaporation during specimen storage can be minimized. Minimizing the risk of concentrating blood sample B1 during specimen transport is important for stable analysis of minute blood samples.
- the dial part 350 is first removed from the storage container 100 together with the plunger 360. Thereafter, the dispensing instrument V is inserted into the storage space 302, the blood cells B3 stored in the storage space 302 are dispensed, and items such as HbA1c (hemoglobin A1c value) are measured using the blood cells B3 as a sample.
- HbA1c hemoglobin A1c value
- the entire plasma B2 can be used as a sample regardless of the plasma amount. This makes it possible to reduce the dilution factor of plasma B2 during sample measurement, making it possible not only to improve test accuracy but also to expand the number of items to be tested.
- the diluent C in the storage container 100 is a liquid in which a marker substance of a known concentration is evenly mixed with an aqueous solution such as Good's buffer, phosphate buffer, or physiological saline. used to dilute.
- a marker substance that dissolves in the diluent is not present in plasma B2, dissolves well in water, allows for highly sensitive absorbance measurement, and has high resistance to environmental conditions such as light, temperature, and humidity. It is a substance that As the marker substance, for example, choline chloride can be used.
- the storage container 100 is directly set in a biochemical testing device, and the suction needle 900 of the testing device is is inserted into the blood collection space 102 of the storage container 100 and the sample is taken out.
- the absorbance of the diluted plasma B4 taken out is measured for the concentration of the diluted marker as one item of biochemical analysis.
- the blood storage container 10 is desirably formed with a cylinder outer diameter of 10 mm to 12 mm to fit into a standard-sized test tube 800, and the flange portion 101F is supported at the edge of the adapter 600. It is desirable that the Further, it is desirable that a conical first tapered portion 103 be formed at the lowest part of the blood collection space 102 so that the maximum amount of plasma sample can be aspirated with the suction needle 900.
- the dilution rate of an aqueous solution can generally be determined by dividing the marker content (absorbance) after mixing the target solution by the marker content (absorbance) of the original aqueous solution measured immediately before dilution. Since the sum of the dilution factors in mixed blood is always "1", the plasma dilution factor can be determined by subtracting the blood solution dilution factor from 1. Therefore, the plasma dilution factor can be calculated by dividing 1 by the plasma dilution factor. The value obtained by multiplying the measured value of each test item simultaneously measured using the same specimen by the plasma dilution factor determined by the above calculation becomes the test value of each test item.
- the condition is that the calibration curve of the item expressed as absorbance versus concentration is linear. If a linear calibration curve cannot be obtained, this can be resolved by recreating the calibration curve using a diluted target area.
- the blood sampling device 1 can be used as a blood sampling device for immediate testing at the site in conjunction with a POCT (Point Of Care Testing) device.
- the test sample is either collected whole blood or centrifuged plasma.
- FIG. 10(a) when whole blood is used, the sample is discharged from the tip of the blood sampling tip 400 into a receiving tray specified by the testing device after blood sampling and mixing.
- the storage container 100 when using separated plasma as a sample, the storage container 100 is centrifuged, the plasma and blood cells are separated by a stopper 250, and then the plasma is discharged into a receiving tray in the same way as for whole blood. can do. If a small amount of sample remains at the tip of the blood sampling tip 400, almost the entire amount can be discharged by touching the receiving tray at the tip of the blood sampling tip 400 and lightly tapping the blood sampling tip 400.
- an independent blood sampling device 1A can be configured using the configuration of the blood sampling chip 400 of the above embodiment.
- the blood sampling device 1A includes a blood sampling tip 400X that collects blood, and a pusher 700 that is attached to the blood sampling tip 400X.
- the blood sampling chip 400X includes a blood sampling section 401 in which a blood sampling opening 403 is formed so that a part of the inner peripheral surface of the flow path is exposed on one side in the axial direction.
- the blood collection chip 400X includes a blood collection part 401 that is formed so that the blood flowing into the flow path 430 when the blood serving as a sample comes into contact with a part of the inner circumferential surface 430H exposed in the blood collection opening 403;
- a cylinder portion 480 formed in a cylindrical shape is provided on the other side of the portion 401 in the axial direction.
- a pushing tool 700 is inserted into the internal space of the cylinder portion 480.
- An upward mark 489 having the same function as the upward mark 409 is formed on the outer peripheral surface of the cylinder portion 480 .
- At least one second groove portion 482 is formed in the cylinder inner peripheral surface 481 formed in the cylinder portion 480 along the axis L direction.
- the second groove portion 482 is formed to have a predetermined length from one end of the cylinder inner circumferential surface 481 in the axial direction.
- four second grooves 482 are formed in the cylinder inner circumferential surface 481, and constitute air vent passages when the pusher 700 is inserted during blood collection.
- the pushing tool 700 includes a piston 701 inserted into the internal space of the cylinder portion 480 and an operating portion 702 formed continuously on one side of the piston 701 in the axial direction.
- the piston 701 is provided in the internal space of the cylinder portion 480 so as to be movable along the axis L direction.
- Piston 701 is formed into a cylindrical shape.
- the outer diameter of the piston 701 is formed to be slightly smaller than the inner diameter of the cylinder portion 480.
- a rod-shaped operating portion 702 is provided on the other axial side of the piston 701 .
- the blood sampling device 1A transfers the collected blood into the flow path 430 of the blood sampling section 401 through the blood sampling opening 403 by operating the operation section 702 and moving the piston 701 along the axial direction in the internal space. It can be discharged from
- the blood sampling device 1A can be used as a general-purpose plastic micro-blood sampling device that does not require hydrophilic treatment.
- the piston 701 When collecting blood, the piston 701 is inserted to the front of the middle part of the cylinder part 480 where the second groove part 482 is formed, and the blood is aspirated using the same operating procedure as the blood sampling tip 400. In this state, the internal space of the cylinder portion 480 closed by the piston 701 communicates with the external space via the second groove portion 482. That is, the blood sampling device 1A can suck blood into the flow path 430 from the blood sampling opening 403 by capillary action instead of using the piston 701 to suck blood.
- the piston 701 After sucking the blood, the piston 701 is pushed into the area beyond the middle part of the inner peripheral surface of the cylinder part 480 where the second groove part 482 is not formed by operating the operation part 702 to draw the blood stored in the blood collection chip 400. Dispense into a storage container, etc. In a region on one axial side of the cylinder inner circumferential surface 481 where the second groove portion 482 is not formed, the outer circumferential surface of the piston 701 and the cylinder inner circumferential surface 481 fit together without a gap.
- the piston 701 After blood collection, the piston 701 is pushed into a region beyond the middle part of the cylinder inner circumferential surface 481, compressing the air inside the cylinder part 480 without leaking, and pushing out the blood from the blood collection tip part. Further, by applying an additive such as the above-mentioned anticoagulant to the cylinder inner circumferential surface 481 at the tip of the blood sampling tip 400X, the additive can be mixed with the blood during blood suction and discharge.
- the blood sampling device 1A shown in FIGS. 11 and 12 it is possible to efficiently conduct hematology tests, etc., in which whole blood is tested as a sample without centrifugation, and experiments on small animals such as mice. It is also highly convenient as a blood sampling tool.
- the plasma part of the collected blood can be used as a test sample without dispensing it without wasting a single drop. Can be done.
- the amount of blood required for testing can be halved compared to conventional blood sampling devices. For example, in a micro blood test for 13 biochemical items, a dilution test of about 10 to 15 times is generally performed, and at least 15 ⁇ l of plasma is required, so the amount of blood collected is 60 ⁇ l or more. Often requested.
- the blood sampling device of the above embodiment it is possible to collect the same amount of plasma as when collecting 60 ⁇ l of blood by collecting approximately 30 ⁇ l of blood with a standard hematocrit value, and the entire amount can be used as the test sample. It can be done.
- the collected plasma can be directly diluted with a dilution solution containing a marker, and the dilution rate can be measured after the fact.
- a dilution solution containing a marker e.g., a marker that is used to measure the amount of blood to be collected.
- the blood sampling device by cutting the tip of the plastic tube of the blood sampling tip at an angle, it is possible to automatically generate wettability on the inner wall of the tip when the liquid surface comes into close contact with the tip.
- the tip hole of a plastic tube with an angle-cut tip is brought into close contact with the upper surface of the stored liquid without any gaps, a portion is created where the blood surface and the inner wall of the tube directly come into contact, and the liquid accumulates in this portion, creating a wet state. This causes a significant capillary phenomenon at the tip, making it possible to aspirate liquid from the tip into the container despite the plastic inner wall having a hydrophobic surface.
- the plastic collection container has a tapered shape that expands downward, so the sucked liquid is pulled diagonally downward by gravity in addition to capillary action, and suction continues until the required amount is reached.
- the angle-cut tip of the blood sampling device is brought into contact with the upper part of the surface of the liquid, such as the pooled blood, so that the surface tension of the pooled liquid that is formed between the fingertip surface and the surface of the fingertip is not broken during contact, thus preventing the liquid from flowing down. does not induce Therefore, continuous suction of the stored liquid is possible without using tape to prevent dripping.
- the blood collected with the blood collection chip naturally falls into the storage container under its own weight through the air vent slit made in the fitting part of the blood collection chip and the container, so you can safely and reliably collect high-quality blood without any dispensing operations.
- the sample can be guided and stored in the storage container.
- the collected blood is mixed with additives in a sealed storage container 100, and the blood cells are moved by centrifugation into a sealed container 300 partitioned by a separation channel 10R. Thereafter, the storage container and the closed container 300 are shut off by the stopper 250, and the physical separation of blood cells and plasma is completed.
- Separated plasma and blood cell samples are sealed and stored in the storage container 100 and airtight container 300, respectively, so they can be used as test samples even under various management conditions such as blood transportation, as long as standard storage requirements are met. Quality assurance can be obtained.
- the blood cell storage capacity of the sealed container 300 can be freely changed by moving the plunger 360 along the axis L direction.
- By adjusting the position of the plunger 360 and changing the volume for storing blood cells during centrifugation not only can the amount of collected plasma be maximized, but also the plasma portion and blood cell portion can be adjusted for blood samples with different blood collection volumes and hematocrit rates. It is possible to perform appropriate separation of plasma and maximize plasma volume. As a result, it becomes possible to reduce the blood collection volume for women and the elderly, who generally have low hematocrit rates, and to reduce the invasive burden.
- the separated plasma is completely blocked from the blood cells or separation agent and has no contact at the separation surface, so the entire amount can be used as an analysis sample.
- the dilution rate of the analysis sample can be reduced and the concentration of components in the sample to be analyzed can be increased.
- the plasma and blood cells are hermetically sealed in the container, and the diluent is dropped directly into the storage container, allowing the separated plasma to be collected without dispensing plasma. are mixed and diluted in the storage container 100, and using the adapter 600, the container is set in a testing test tube and applied to testing equipment. In addition, the stem of the sealed container is removed, and the blood cells stored in the sealed container are taken out, dispensed, and tested. This not only improves the efficiency of inspection work, but also eliminates manual weighing work and improves inspection accuracy.
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Abstract
Description
分離終了後、採血空間102には、血漿B2が溜まり、保存空間302には、血球B3が溜まる。保存空間302に分離格納された血球B3は、その保存状態を外部から確認することができる。
取り出された希釈血漿B4は、生化学分析の1項目として希釈マーカー濃度の吸光度が測定される。
以下、本発明の変形例について説明する。以下の説明において、上記実施形態と同一の構成については同一の名称及び符号を用い、重複する説明は適宜省略する。
10 血液保存容器
10R 分離流路
100 格納容器
101 第1開口
101F フランジ部
102 採血空間
103 第1テーパ部
130 格納容器内壁
140 開口部
160 シリンダ部
200 容器蓋
210 底部
220 フランジ部
250 ストッパ
251 押圧部
252 スライド部
300 密閉容器
301 第2開口
302 保存空間
303 第2テーパ部
304 突出部
305 外周面
350 ダイアル部
351 嵌合部
352 内周面
353 貫通孔
353M ネジ溝
354 スリット
360 プランジャ
361 ネジ部
362 頭部
400、400X 採血チップ
401 採血部
403 採血用開口
405 接続部
405H 接続用開口
406 第1溝部
408 計量線
409 上方向マーク
430 流路
430H 内周面
480 シリンダ部
481 シリンダ内周面
482 第2溝部
500 キャップ
600 アダプタ
700 押し出し具
701 ピストン
702 操作部
800 試験管
900 吸引針
Claims (8)
- 血液を格納、保存する血液保存容器であって、
軸方向一方側に第1開口を有し前記血液を格納する採血空間が形成された格納容器と、
前記格納容器の軸方向他方側に設けられ、軸方向他方側に第2開口を有し前記血液を保存する保存空間が形成された密閉容器と、
前記第2開口を覆うように前記密閉容器の軸方向他方側において回転可能に設けられたダイアル部と、を備え、
前記採血空間と前記保存空間との間には、前記採血空間と前記保存空間とに連続する分離流路が形成され、
前記採血空間は、軸方向他方側において前記分離流路に連続するように形成され、
前記分離流路は、前記採血空間に比して横断面が小さく形成され、
前記保存空間は、前記分離流路に比して横断面が大きく形成され、
前記ダイアル部は、軸方向他方側に突出して形成され、前記保存空間の内面に接触した状態で軸線方向へ移動自在なプランジャを有する、
血液保存容器。 - 前記ダイアル部は、前記密閉容器と嵌合する嵌合部と、外周面と内周面とを切り欠くように軸方向に沿って対称に形成された2つのスリットとを備え、
前記スリットは、前記外周面を押圧することによりスリット幅が縮小し、
前記嵌合部は、前記スリット幅の縮小と共に変形し、前記密閉容器との嵌合が解除され、
前記ダイアル部は、前記嵌合部と前記密閉容器との嵌合が解除された際に前記プランジャと共に前記密閉容器から取り外される、
請求項1に記載の血液保存容器。 - 前記分離流路には、前記採血空間と、前記保存空間とを連通させ、或いは遮蔽するストッパが設けられ、
前記ストッパは、前記分離流路および前記保存空間の軸線方向と交差する方向へ移動可能に設けられている、
請求項2に記載の血液保存容器。 - 請求項1または2のいずれか一項に記載の血液保存容器と、
前記血液保存容器に設けられた前記格納容器の軸方向一方側において前記第1開口を塞ぐように着脱可能に取り付けられる採血チップと、を備え、
前記採血チップは、軸方向一方側において流路の内周面の一部が露出するように採血用開口が形成された採血部を備え、
前記採血部は、前記採血用開口において露出した前記内周面の一部に試料となる血液が接触することにより前記血液が前記流路内に流入するように形成されている、
血液採取器具。 - 前記採血用開口は、軸方向に対してアングルカットされた形状に形成されている、
請求項4に記載の血液採取器具。 - 前記採血チップは、軸方向他方側において、前記第1開口から挿入される接続部を備え、
前記接続部の外周面には、軸方向に沿って少なくとも1つの第1溝部が形成されている、
請求項5に記載の血液採取器具。 - 軸方向一方側において流路の内周面の一部が露出するように採血用開口が形成された採血チップを備え、
前記採血チップは、前記採血用開口において露出した前記内周面の一部に試料となる血液が接触することにより前記血液が前記流路内に流入するように形成されている採血部と、
前記採血チップの軸方向他方側に設けられ、円筒状に形成されたシリンダ部と、
前記シリンダ部の内部空間に挿入される押し出し具と、を備え、
前記押し出し具は、
前記内部空間に挿入され軸方向に沿って移動自在に設けられたピストンと
前記ピストンの軸方向一方側に連続して形成された操作部と、を備え、
前記操作部を操作し前記ピストンを前記内部空間内において軸方向に沿って移動させることにより、前記流路内に採血された前記血液を前記採血用開口から吐出させる、
血液採取器具。 - 前記シリンダ部に形成されたシリンダ内周面には、軸方向に沿って少なくとも1つの第2溝部が形成され、
前記第2溝部は、前記シリンダ内周面の軸方向一方側の端部から所定の長さに形成されている、
請求項7に記載の血液採取器具。
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| PCT/JP2022/029137 WO2024024039A1 (ja) | 2022-07-28 | 2022-07-28 | 血液保存容器および血液採取器具 |
| TW111129971A TWI828265B (zh) | 2022-07-28 | 2022-08-10 | 血液保存容器以及血液採取器具 |
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| JP2014200267A (ja) * | 2013-04-01 | 2014-10-27 | テルモ株式会社 | 採取具ケース |
| EP3338839B1 (en) * | 2015-08-20 | 2023-03-15 | Terumo Kabushiki Kaisha | Syringe assembly, pre-filled syringe, sealing cap for outer tube and package for syringe assembly |
| JP6658498B2 (ja) * | 2016-12-22 | 2020-03-04 | 株式会社島津製作所 | 遠心分離用試料ホルダ |
| ES2976185T3 (es) * | 2019-06-13 | 2024-07-26 | Trenta2 S R L | Sistema de trasvase de fluidos y sus componentes |
| EP3988075B1 (en) * | 2019-07-22 | 2024-08-21 | TERUMO Kabushiki Kaisha | To-be-administered drug solution adjusting tool, to-be-administered drug solution adjusting kit, and method for adjusting to-be-administered drug solution using the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH09113421A (ja) * | 1995-10-17 | 1997-05-02 | Kunimune Kogyosho:Kk | 液体混合器 |
| KR20100105282A (ko) * | 2009-03-16 | 2010-09-29 | 문상호 | 피알피 및 필러 추출과 피브린 생성을 위한 혈액분리 및 농축용기 |
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| JP2019100858A (ja) * | 2017-12-01 | 2019-06-24 | ジャパン・メディカル・リーフ株式会社 | 血液検査用容器 |
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| JPWO2024024039A1 (ja) | 2024-02-01 |
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