CN109009166B - A blood collection device for physical examination - Google Patents
A blood collection device for physical examination Download PDFInfo
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- CN109009166B CN109009166B CN201810916070.XA CN201810916070A CN109009166B CN 109009166 B CN109009166 B CN 109009166B CN 201810916070 A CN201810916070 A CN 201810916070A CN 109009166 B CN109009166 B CN 109009166B
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- 239000008280 blood Substances 0.000 title claims abstract description 93
- 210000004369 blood Anatomy 0.000 title claims abstract description 92
- 238000002347 injection Methods 0.000 claims description 45
- 239000007924 injection Substances 0.000 claims description 45
- 238000010241 blood sampling Methods 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims 1
- 239000012503 blood component Substances 0.000 abstract description 11
- 238000005119 centrifugation Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 6
- 238000007789 sealing Methods 0.000 abstract description 5
- 230000000149 penetrating effect Effects 0.000 abstract description 4
- 238000012360 testing method Methods 0.000 description 12
- 238000010586 diagram Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 4
- 238000000605 extraction Methods 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 238000003556 assay Methods 0.000 description 2
- 210000000601 blood cell Anatomy 0.000 description 2
- 210000004204 blood vessel Anatomy 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000004180 plasmocyte Anatomy 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/153—Devices specially adapted for taking samples of venous or arterial blood, e.g. with syringes
- A61B5/154—Devices using pre-evacuated means
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150015—Source of blood
- A61B5/15003—Source of blood for venous or arterial blood
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150206—Construction or design features not otherwise provided for; manufacturing or production; packages; sterilisation of piercing element, piercing device or sampling device
- A61B5/150236—Pistons, i.e. cylindrical bodies that sit inside the syringe barrel, typically with an air tight seal, and slide in the barrel to create a vacuum or to expel blood
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150343—Collection vessels for collecting blood samples from the skin surface, e.g. test tubes, cuvettes
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Abstract
本发明公开了一种查体用采血器，属于医疗器械领域，包括注射筒，注射筒内设有上活塞体和下活塞体，下活塞体的推拉杆穿过上活塞体并延伸至上活塞体的推拉柄上方，初始状态下，上活塞体的活塞头下表面贴附下活塞体的活塞头上表面；下活塞体的活塞头上设有贯穿活塞头上下表面的通孔，通孔内设有朝向其上方开启的液控单向阀；上活塞体和下活塞体的推拉杆均分为可拆卸连接的上拉杆和下推杆；注射筒一侧设有排血口，排血口上设有开关阀。本发明能实现较好的封闭效果，防止血液接触空气；离心处理后的血液不需从下到上顺次排出，一次可单单取用需要的血液成分；还可节约一次性用具的使用，并简化操作步骤。
The invention discloses a blood sampler for physical examination, which belongs to the field of medical equipment and comprises a syringe, an upper piston body and a lower piston body are arranged in the syringe, and a push-pull rod of the lower piston body passes through the upper piston body and extends to the upper piston body Above the push-pull handle, in the initial state, the lower surface of the piston head of the upper piston body is attached to the upper surface of the piston head of the lower piston body; the piston head of the lower piston body is provided with a through hole penetrating the upper and lower surfaces of the piston head, and the through hole is provided with There is a hydraulic control one-way valve that opens upwards; the push-pull rods of the upper piston body and the lower piston body are divided into detachable connection upper pull rods and lower push rods; one side of the syringe is provided with a blood outlet, and the blood outlet is provided with There is an on-off valve. The invention can achieve a better sealing effect and prevent the blood from contacting the air; the blood after centrifugation does not need to be discharged in sequence from the bottom to the top, and the required blood components can be taken at a time; the use of disposable appliances can also be saved, and the Simplified steps.
Description
Technical Field
The invention relates to the field of medical instruments, in particular to a blood sampler for physical examination.
Background
In health examination, blood testing is one of the items, generally blood routine and biochemical examination, and can help doctors to monitor the treatment effect as well as diagnose diseases. Traditionally, in blood collection assays, a disposable syringe is typically used to draw the blood; in order to facilitate the transportation and centrifugal treatment of blood, the blood in the injector needs to be injected into a test tube with a label, and then the opening of the test tube is sealed by a sealing cover; during blood sampling and testing, a disposable syringe is needed to draw blood in the test tube. On one hand, the disposable utensil has larger consumption, which causes larger waste; on the other hand, the injection and extraction of blood in the test tube may contact with air, which is likely to cause blood sample contamination and affect the test result.
At present, a hemostix is disclosed in the patent with application publication No. CN 205072873U, which comprises a tube, a cap and a pull rod, wherein a collection part is arranged at one end of the tube, the collection part is shrunk to form a sleeve connection part, the sleeve connection part is provided with an outlet, a plurality of ribs are annularly arranged on the inner wall of the tube, a piston body is arranged in the tube, the piston body is provided with a screw hole and a concave part matched with the ribs, the cap is provided with a blind hole matched with the collection part and seals the outlet of the sleeve connection part, and the pull rod is provided with a screw rod part screwed with the screw hole. The outlet of the tube body is connected with a puncture needle which can be punctured into a blood vessel of a human body for blood drawing; then the screw rod part of the drawing rod is rotated to be separated from the screw hole, the cap is sleeved after the puncture needle is pulled out, blood is stored in the tube body in a sealed mode, the tube body is convenient to carry out centrifugal treatment, and the blood after the centrifugal treatment is divided into a plasma layer and a blood cell layer; then the drawing rod is mounted, the cap is taken off, and the drawing rod is pushed forward to discharge blood in a layered manner, so that plasma and blood cells can be obtained separately. Which saves the use of disposable utensils and simplifies the operating steps. However, it has the following disadvantages: firstly, in the process of pulling out the puncture needle and then sleeving the cap, air can enter the tube body to cause blood sample pollution and influence the test result; secondly, when the blood is discharged in a layered manner, the blood needs to be discharged from bottom to top in sequence, so that the needed blood part is not convenient to take in time.
Disclosure of Invention
1. Technical problem to be solved
The invention aims to provide a hemostix for physical examination, which can realize better sealing effect and prevent blood from contacting air; the blood after the centrifugal treatment does not need to be discharged from bottom to top in sequence, and the required blood components can be taken singly at one time; the use of disposable appliances can also be saved and the operation steps can be simplified.
2. Technical scheme
In order to solve the problems, the invention adopts the following technical scheme:
a hemostix for physical examination comprises an injection tube, wherein the bottom of the injection tube is provided with an injection port, a puncture needle is arranged on the injection port, a piston body consisting of a piston head, a push-pull rod and a push-pull handle is arranged in the injection tube, the periphery of the piston head is attached to the inner wall of the injection tube, the push-pull rod is vertically fixed in the middle of the upper surface of the piston head, and the push-pull handle is fixed at the upper end of the push-pull rod;
the injection tube is internally provided with an upper piston body and a lower piston body, the lower piston body comprises a first piston head with the periphery attached to the inner wall of the injection tube, a first push-pull rod fixed in the middle of the upper surface of the first piston head, and a first push-pull handle fixed at the upper end of the first push-pull rod, the upper piston body comprises a second piston head with the periphery attached to the inner wall of the injection tube, a second push-pull rod fixed in the middle of the upper surface of the second piston head, and a second push-pull handle fixed at the upper end of the second push-pull rod, the second piston head is positioned right above the first piston head, the upper end of the first push-pull rod sequentially penetrates through the second piston head, the second push-pull rod and the second push-pull handle, and the length of the first push-pull rod is greater than the sum of the length of the second push-pull rod and the thickness of the second piston head; the piston head I is provided with a through hole penetrating through the upper surface and the lower surface of the piston head I, and a hydraulic control one-way valve opened towards the piston head II is arranged in the through hole; the first push-pull rod comprises a first detachable upper pull rod and a first detachable lower pull rod, the upper end of the first upper pull rod is fixedly connected with a first push-pull handle, the lower end of the first lower pull rod is fixedly connected with a first piston head, the lower end of the first upper pull rod is detachably connected with the upper end of the first lower pull rod, the second push rod comprises a second detachable upper pull rod and a second detachable lower pull rod, the upper end of the second upper pull rod is fixedly connected with a second push handle, the lower end of the second lower push rod is fixedly connected with a second piston head, and the lower end of the second upper pull rod is detachably connected with the upper end of the second lower push rod; a hose is connected between the injection port and the puncture needle, and an adjusting switch is arranged on the hose; a blood discharge port is formed in one side of the injection tube, and a switch valve is arranged on the blood discharge port; in an initial state, the lower surfaces of the piston heads are attached to the upper surface of the piston head, and the distance between the first push-pull handle and the second push-pull handle is not less than the height of blood to be extracted in the syringe.
Furthermore, the side wall of the position, through which the first push-pull rod penetrates, in the second lower push rod is provided with vertically arranged first convex ribs at equal intervals along the circumference of the first lower push rod, and the surface of the first lower push rod is provided with vertically arranged second convex ribs at equal intervals along the circumference of the first lower push rod, wherein the second convex ribs are just aligned in gaps among the first convex ribs. The first convex rib and the second convex rib play a role in limiting rotation mutually, and can promote the detachment of the first upper pull rod and the first lower pull rod, and the second upper pull rod and the second lower pull rod.
Furthermore, the lower end of the upper pull rod is sleeved with the upper end of the lower pull rod, and the outer surface of the lower end of the upper pull rod and the inner surface of the upper end of the lower pull rod are respectively and correspondingly provided with an external thread and an internal thread which are matched with each other; the lower end of the upper pull rod II is sleeved with the upper end of the lower pull rod II, and the outer surface of the lower end of the upper pull rod II and the inner surface of the upper end of the lower pull rod II are respectively and correspondingly provided with an external thread and an internal thread which are matched with each other. The upper pull rod I and the lower pull rod I are connected in a threaded mode, and the upper pull rod II and the lower pull rod II can be detachably connected, so that the assembly and disassembly are convenient, and the application is convenient.
Furthermore, the first push-pull handle is parallel to the second push-pull handle, and a pull ring is fixed on the upper surface of the first push-pull handle. Because the first push-pull handle is pushed down, the second push-pull handle can be attached, and the pull ring is arranged, so that the first push-pull handle can be conveniently pulled even if the possibility exists.
Furthermore, the first push-pull handle and the second push-pull handle are both in a strip shape, and the first push-pull handle is perpendicular to the second push-pull handle. Because the first push-pull handle is likely to be attached to the second push-pull handle when pushed down, the first push-pull handle is perpendicular to the second push-pull handle to always facilitate the operation of the first push-pull handle when the first push-pull handle is required to be pulled up and pushed down inconveniently.
3. Advantageous effects
(1) The invention is provided with an upper piston body and a lower piston body in the injection tube, a push-pull rod of the lower piston body penetrates through the upper piston body and extends above a push-pull handle of the upper piston body, the lower surface of a piston head of the upper piston body is attached to the upper surface of a piston head of the lower piston body in an initial state, and the distance between the push-pull handle of the upper piston body and the push-pull handle of the lower piston body is not less than the height of blood to be extracted in the injection tube; the piston head of the lower piston body is provided with a through hole penetrating through the upper surface and the lower surface of the piston head, and a hydraulic control one-way valve which is opened towards the upper part of the through hole is arranged in the through hole. When the device is applied, the two piston bodies are pulled upwards to draw blood into the injection tube, at the moment, the blood is positioned in the space below the lower piston body, when the blood volume to be drawn is reached, the injection port of the injection tube is sealed, the push-pull handle of the lower piston body is pushed downwards, the position of the upper piston body is unchanged, a negative pressure closed cavity is formed between the two piston heads, the blood in the injection tube rushes to the through hole and rushes open the hydraulic control one-way valve, then the blood enters the negative pressure cavity until the lower surface of the first piston head contacts the inner bottom surface of the injection tube, and the first piston head just plugs the injection port, so that the hose and the puncture needle can be detached. Blood enters the syringe after being pumped out of a human body and then enters the cavity between the two piston heads, so that the blood is completely stored in a closed way, and the possibility that the blood contacts air in the processes of pumping and storing is avoided.
(2) The push-pull rod of the upper piston body and the push-pull rod of the lower piston body are divided into an upper pull rod and a lower push rod which are detachably connected, the upper end of the upper pull rod is fixedly connected with the push-pull handle, the lower end of the lower push rod is fixedly connected with the piston head, and the lower end of the upper pull rod is detachably connected with the upper end of the lower push rod. When blood is to be centrifugally treated, the upper pull rods of the two piston bodies and the push-pull handle can be detached and placed on one side, at the moment, only the length of the injection cylinder is reserved, the injection cylinder can be conveniently placed in centrifugal equipment for centrifugal treatment, and the blood is layered after centrifugation; when blood is to be taken, the upper pull rod is arranged back, so that the piston heads of the two piston bodies can be driven, and the blood can be discharged. During centrifugation, the blood remains within the sealed cavity.
(3) The invention is provided with a blood discharge port on one side of the injection tube, and the blood discharge port is provided with a switch valve. When blood is to be taken and tested, layered blood is positioned between the two piston heads, the two push-pull handles are pulled up together, the distance between the two piston heads is kept unchanged, the two piston heads and the blood between the two piston heads are integrally moved upwards until the lower surface of a layer formed by the blood components to be taken is flush with the bottom of the blood discharge port, the push-pull handle is stopped being pulled upwards, then the switch valve on the blood discharge port is opened, the push-pull handle of the upper piston body is pushed downwards (or the upper surface of the layer is flush with the top of the blood discharge port, after the pull-up push-pull handle is stopped being pulled upwards, the switch valve on the blood discharge port is opened, the push-pull handle of the lower piston body is pulled downwards, the piston head of the lower piston body is pulled to move upwards), the blood components to be taken can be discharged from the blood discharge port without being influenced by the layering position, the blood components on each layer can be taken out in sequence, and the blood components can be taken out singly at one time, is beneficial to saving operation steps.
(4) The invention only comprises one syringe which also acts as a test tube, and the whole process from blood drawing to blood drawing can be realized only by the invention, thereby saving the use of disposable tools and simplifying the operation steps.
In conclusion, the invention can realize better sealing effect from the period from the blood extraction to the discharge, thereby avoiding the possibility that the blood contacts the air, preventing the blood sample from being polluted and ensuring the test result; the centrifugal treatment is convenient, the blood after the centrifugal treatment does not need to be discharged from bottom to top in sequence, and the required blood components can be taken singly at one time; the use of disposable appliances can also be saved and the operation steps can be simplified.
Drawings
FIG. 1 is a schematic structural view in example 1 of the present invention;
FIG. 2 is a schematic structural view in example 2 of the present invention;
FIG. 3 is an enlarged view of the cross section A-A in FIG. 1;
FIG. 4 is a schematic diagram showing the connection ends of the first upper pulling rod 521 and the first lower pulling rod 522 separated from each other;
FIG. 5 is a plan view of the preferred embodiment 2;
FIG. 6 is a flow chart of the present invention in example 1; wherein, the diagram (a) is a schematic diagram in an initial state, and the diagram (b) is a schematic diagram after air is exhausted; fig. c is a schematic diagram of the time immediately after a desired amount of blood is drawn, fig. d is a schematic diagram of the time when the blood is completely stored hermetically, fig. e is a schematic diagram of the preparation for centrifugation, fig. f is a schematic diagram of the preparation for plasma collection after centrifugation, and fig. g is a schematic diagram of the collection of upper plasma.
Reference numerals: 1-injection cylinder, 2-injection port, 3-puncture needle, 4-upper piston body, 41-piston head two, 42-push-pull rod two, 421-upper pull rod two, 422-lower pull rod two, 43-push-pull handle two, 5-lower piston body, 51-piston head one, 52-push-pull rod one, 521-upper pull rod one, 522-lower pull rod one, 53-push-pull handle one, 6-through hole, 7-hydraulic control one-way valve, 8-hose, 9-blood discharge port, 10-switch valve, 11-convex rib one, 12-convex rib two, 13-external thread, 14-internal thread, 15-pull ring and 16-regulating switch.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Example 1
The hemostix for physical examination comprises an injection tube 1, wherein the bottom of the injection tube 1 is provided with an injection port 2, a puncture needle 3 is arranged on the injection port 2, a piston body consisting of a piston head, a push-pull rod and a push-pull handle is arranged in the injection tube 1, the periphery of the piston head is attached to the inner wall of the injection tube 1, the push-pull rod is vertically fixed in the middle of the upper surface of the piston head, and the push-pull handle is fixed at the upper end of the push-pull rod;
an upper piston body 4 and a lower piston body 5 are arranged in the injection cylinder 1, the lower piston body 5 comprises a first piston head 51 with the periphery attached to the inner wall of the injection cylinder 1, a first push-pull rod 52 fixed in the middle of the upper surface of the first piston head 51, and a first push-pull handle 53 fixed at the upper end of the first push-pull rod 52, the upper piston body 4 comprises a second piston head 41 with the periphery attached to the inner wall of the injection cylinder 1, a second push-pull rod 42 fixed in the middle of the upper surface of the second piston head 41, and a second push-pull handle 43 fixed at the upper end of the second push-pull rod 42, the second piston head 41 is positioned right above the first piston head 51, the upper end of the first push-pull rod 52 sequentially penetrates through the second piston head 41, the second push-pull rod 42 and the second push-pull handle 43, and the length of the first push-pull rod 52 is greater than the sum of the length of the second push-pull rod 42 and the thickness of the second piston head 41; a through hole 6 penetrating through the upper surface and the lower surface of the piston head 51 is formed in the piston head 51, and a hydraulic control one-way valve 7 opened towards the piston head two 41 is arranged in the through hole 6; the first push-pull rod 52 comprises a first upper pull rod 521 and a first lower pull rod 522 which are detachable, the upper end of the first upper pull rod 521 is fixedly connected with a first push-pull handle 53, the lower end of the first lower push rod 522 is fixedly connected with a first piston head 51, the lower end of the first upper pull rod 521 is detachably connected with the upper end of the first lower push rod 522, the second push-pull rod 42 comprises a second upper pull rod 421 and a second lower push rod 422 which are detachable, the upper end of the second upper pull rod 421 is fixedly connected with a second push-pull handle 43, the lower end of the second lower push rod 422 is fixedly connected with a second piston head 41, and the lower end of the second upper pull rod 421 is detachably connected with the upper end of the second lower push rod 422; a hose 8 is connected between the injection port 2 and the puncture needle 3, and an adjusting switch 16 is arranged on the hose 8; a blood discharge port 9 is formed in one side of the injection tube 1, and a switch valve 10 is arranged on the blood discharge port 9; in the initial state, the lower surface of the second piston head 41 is attached to the upper surface of the first piston head 51, and the distance between the first push-pull handle 53 and the second push-pull handle 43 is not less than the height of the blood to be extracted in the syringe 1.
In this embodiment, as shown in fig. 3, the sidewall of the position through which the push-pull rod 52 passes in the lower push rod two 422 is provided with a first vertically arranged rib 11 at equal intervals along the circumference thereof, and the surface of the lower push rod one 522 is provided with a second vertically arranged rib 12 at equal intervals along the circumference thereof, which is exactly aligned in the gap between the first ribs 11. The first ribs 11 and the second ribs 12 play a role in limiting rotation mutually, and can promote the detachment of the first upper pull rod 521 and the first lower pull rod 522, and the second upper pull rod 421 and the second lower pull rod 422.
In this embodiment, as shown in fig. 4, the lower end of the first upper pull rod 521 is sleeved with the upper end of the first lower pull rod 522, and the outer surface of the lower end of the first upper pull rod 521 and the inner surface of the upper end of the first lower pull rod 522 are respectively and correspondingly provided with an external thread 13 and an internal thread 14 which are matched with each other; the lower end of the second upper pull rod 421 is sleeved with the upper end of the second lower pull rod 422, and the outer surface of the lower end of the second upper pull rod 421 and the inner surface of the upper end of the second lower pull rod 422 are respectively and correspondingly provided with an external thread 13 and an internal thread 14 which are matched with each other. The requirement that the first upper pull rod 521 and the first lower pull rod 522 are connected in a threaded manner, and the second upper pull rod 421 and the second lower pull rod 422 are detachably connected is met, so that the assembly and disassembly are convenient, and the application is convenient.
In the embodiment, the first push-pull handle 53 is parallel to the second push-pull handle 43, and the pull ring 15 is fixed on the upper surface of the first push-pull handle 53. Because there is a possibility that the push-pull lever one 53 may stick to the push-pull lever two 43 when pushed down, the pull ring is provided so that the push-pull lever one 53 can be pulled easily even if the aforementioned possibility occurs.
Example 2
The difference between the present embodiment and the first embodiment is: as shown in fig. 2 and 5, the first push-pull handle 53 and the second push-pull handle 43 are both in the shape of a strip, and the first push-pull handle 53 is perpendicular to the second push-pull handle 43. Because the first push-pull handle 53 may be attached to the second push-pull handle 43 when pushed down, it is still convenient to operate the first push-pull handle 53 by setting the first push-pull handle 53 perpendicular to the second push-pull handle 43 when it is inconvenient to pull up and push the first push-pull handle 53.
The rest is the same as example 1.
The specific application process of the blood collector for examination is as follows (in combination with fig. 6):
(1) preparation work: pushing down the push-pull handle II 43, pushing the piston head II 41 to move downwards through the push-pull rod II 42, pushing the piston head I51 to move downwards because the lower surface of the piston head II 41 in the initial state is attached to the upper surface of the piston head I51, and making the lower surface of the piston head I51 contact the inner bottom surface of the injection tube 1 to play a role in exhausting air in the injection tube 1, and then installing the hose 8 connected with the puncture needle 3 on the injection port 2;
(2) blood drawing: after the puncture needle 3 is punctured into a blood vessel, the puncture needle 3 is fixed, the regulating switch 16 is opened, the first push-pull handle 53 is pulled upwards, the first piston head 51 is pulled to move upwards through the first push-pull rod 52, the second piston head 41 moves upwards along with the first piston head 51 because the lower surface of the second piston head 41 still adheres to the upper surface of the first piston head 51, blood is sucked into the syringe 1, at the moment, the blood is positioned in a space below the first piston head 51, when the blood volume to be extracted is reached, the first piston head 53 is pulled upwards, the regulating switch 16 is closed, the first piston head 53 is pushed downwards, the first piston head 51 is pushed downwards through the first push-pull rod 52, the position of the upper piston body 4 is unchanged, a negative pressure cavity is formed between the first piston head 51 and the second piston head 41, the blood in the syringe 1 is flushed to the through hole 6 and the hydraulic control one-way valve 7 is flushed, then the blood enters between the first piston head 51 and the second piston head 41, until the lower surface of the first piston head 51 contacts the inner bottom surface of the syringe 1, the first piston head 51 plugs the injection port 2, and blood is completely positioned in the negative pressure cavity, so that the blood is completely stored in a closed manner; then the hose 8 is detached and the needle 3 is pulled off and thrown into a collection container; the syringe 1 can be sent to the assay place;
(3) and (3) centrifugal treatment: firstly, rotating and separating the first upper pull rod 521 and the first lower pull rod 522, putting the first upper pull rod 521 and the first push-pull handle 53 on one side, then rotating and separating the second upper pull rod 421 and the second lower pull rod 422, putting the second upper pull rod 421 and the second push-pull handle 43 on one side, only keeping the length of the syringe 1 at the moment, conveniently placing the syringe in a centrifugal device for centrifugal treatment, and enabling blood to have a layering phenomenon after centrifugation;
(4) taking and testing: firstly, the upper pull rod II 421 is rotatably connected to the lower push rod II 422, then the upper pull rod I521 is inserted from the upper pull rod II 421 and rotatably connected to the lower push rod I522, at this time, the piston head I51 is positioned at the bottom in the syringe 1, the piston head II 41 is positioned above the piston head I51, the layered blood is positioned between the piston head I51 and the piston head II 41, the push-pull handle I53 and the push-pull handle II 43 are pulled upwards together, the distance between the piston head I51 and the piston head II 41 is kept unchanged, the whole body of the blood between the piston head I51 and the piston head II 41 and between the two is moved upwards until the layered lower surface formed by the blood components to be taken is flush with the bottom of the blood discharge port 9, the pull-push handle I53 and the push-pull handle II 43 are stopped being pulled upwards, the switch valve 10 on the blood discharge port 9 is opened, the push-pull handle II 43 is pushed downwards by the push-pull rod II 42, the piston head 41 is pushed downwards (or the layered upper surface is flush with the top of the blood discharge port 9, after the pulling and pushing of the first pulling handle 53 and the second pulling handle 43 are stopped, the syringe 1 is inverted, the switch valve 10 on the blood discharge port 9 is opened, the first pulling and pushing handle 53 is pulled down, the first piston head 51 is pushed by the first pulling and pushing rod 52 to move towards the second piston head 41), the blood part to be taken can be discharged from the blood discharge port 9, the layering position is not influenced, the blood components of all layers do not need to be taken in sequence, and the required blood components can be taken at one time.
According to the invention, a better sealing effect can be realized from the period from blood extraction to blood discharge, the possibility that blood contacts air is avoided, blood sample pollution can be prevented, and the test result is guaranteed; the centrifugal treatment is convenient, the blood after the centrifugal treatment does not need to be discharged from bottom to top in sequence, and the required blood components can be taken singly at one time; the use of disposable appliances can also be saved and the operation steps can be simplified.
It should be understood by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as a limitation of the present invention, and that changes and modifications to the above embodiments are within the scope of the claims of the present invention as long as they are within the spirit and scope of the present invention.
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Priority Applications (1)
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| CN109009166B true CN109009166B (en) | 2021-08-17 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0082251B1 (en) * | 1981-12-22 | 1987-08-05 | Contraves Ag | Syringe for two fluids |
| CN2133258Y (en) * | 1992-06-13 | 1993-05-19 | 武进县焦输液器厂 | Disposable multi-functional blood-drawing unit |
| WO2003099412A1 (en) * | 2002-05-24 | 2003-12-04 | Biomet Manufacturing Corp. | Apparatus and method for separating and concentrating fluids containing multiple components |
| WO2008137578A1 (en) * | 2007-05-01 | 2008-11-13 | Geisinger Clinic | Devices and methods for fluid administration |
| KR101137964B1 (en) * | 2009-12-08 | 2012-04-20 | 도병록 | Syringe for adipose tissue transplant and apparatus for distributing adipose tissue having the same |
| CN202397481U (en) * | 2011-12-31 | 2012-08-29 | 李晓斐 | Double-piston sealing blood collection test tube device |
| GB201305489D0 (en) * | 2013-03-26 | 2013-05-08 | Consort Medical Plc | Improved syringe assembly |
| CN204379861U (en) * | 2015-01-05 | 2015-06-10 | 浙江保尔曼生物科技有限公司 | Plasma separating unit |
| CN204972539U (en) * | 2015-04-17 | 2016-01-20 | 浙江星月生物科技股份有限公司 | Concentrate disposable binocular syringe of thing of leukocytic biological activity is got rid of in preparation |
| CN204813912U (en) * | 2015-05-15 | 2015-12-02 | 三门县民生医药器材有限公司 | a blood collection tube |
| CN204699845U (en) * | 2015-06-11 | 2015-10-14 | 黎家榆 | Container bottle |
| CN205072873U (en) * | 2015-09-09 | 2016-03-09 | 杰扬生化科技有限公司 | Hemostix |
| CN105214343B (en) * | 2015-10-26 | 2017-06-20 | 张家港高品诚医械科技有限公司 | A kind of extraction suit of platelet rich plasma |
| CN205286375U (en) * | 2016-01-22 | 2016-06-08 | 黄鹭强 | Double cannula centrifugation syringe |
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