CN111839549A - Device for accurately and quantitatively extracting blood sample - Google Patents
Device for accurately and quantitatively extracting blood sample Download PDFInfo
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- CN111839549A CN111839549A CN202010639053.3A CN202010639053A CN111839549A CN 111839549 A CN111839549 A CN 111839549A CN 202010639053 A CN202010639053 A CN 202010639053A CN 111839549 A CN111839549 A CN 111839549A
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- 239000008280 blood Substances 0.000 title claims abstract description 81
- 210000004369 blood Anatomy 0.000 title claims abstract description 81
- 239000007788 liquid Substances 0.000 claims abstract description 104
- 230000007246 mechanism Effects 0.000 claims abstract description 80
- 238000012546 transfer Methods 0.000 claims abstract description 45
- 239000006096 absorbing agent Substances 0.000 claims abstract description 34
- 238000005070 sampling Methods 0.000 claims abstract description 34
- 238000012360 testing method Methods 0.000 claims description 14
- 238000007789 sealing Methods 0.000 claims description 7
- 238000000605 extraction Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 238000005406 washing Methods 0.000 claims description 2
- 238000002347 injection Methods 0.000 description 12
- 239000007924 injection Substances 0.000 description 12
- 238000010241 blood sampling Methods 0.000 description 10
- 230000017531 blood circulation Effects 0.000 description 6
- 230000001276 controlling effect Effects 0.000 description 6
- 230000001105 regulatory effect Effects 0.000 description 6
- 239000000243 solution Substances 0.000 description 5
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- 238000013461 design Methods 0.000 description 3
- 238000003745 diagnosis Methods 0.000 description 3
- 238000002405 diagnostic procedure Methods 0.000 description 3
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- 206010052428 Wound Diseases 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 238000001802 infusion Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012549 training Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 230000000694 effects Effects 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
- A61B5/150992—Blood sampling from a fluid line external to a patient, such as a catheter line, combined with an infusion line; blood sampling from indwelling needle sets, e.g. sealable ports, luer couplings, valves
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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
- A61B5/150221—Valves
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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
- A61B5/150229—Pumps for assisting the blood sampling
-
- 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
- A61B5/153—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
- A61B5/155—Devices specially adapted for continuous or multiple sampling, e.g. at predetermined intervals
-
- 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
- A61B5/157—Devices characterised by integrated means for measuring characteristics of blood
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Abstract
The invention provides a device for accurately and quantitatively extracting a blood sample, which comprises a liquid transfer cavity, a residual liquid absorber, a liquid transfer power mechanism, a sample inlet and a sample outlet, wherein the sample inlet is provided with a first non-return mechanism, the sample outlet is provided with a second non-return mechanism, the sample inlet is connected with the front end of the liquid transfer cavity, the liquid transfer power mechanism is connected with the residual liquid absorber, the liquid transfer cavity comprises an accurate sampling cavity, the residual liquid absorber is connected with one end of the accurate sampling cavity, and the sample outlet is connected with the other end of the accurate sampling cavity through the second non-return mechanism. The invention realizes the accurate quantitative adoption of blood by utilizing the accurate sampling cavity through the arranged sample inlet, the sample outlet, the residual liquid absorber and the liquid transfer power mechanism and matching with the work of the first non-return mechanism and the second non-return mechanism.
Description
Technical Field
The present invention relates to a quantitative extraction device, and more particularly, to a device for accurately and quantitatively extracting a blood sample.
Background
With the improvement of medical technology, diagnostic test paper capable of analyzing human health information with a small amount of blood has begun to be widely used. Especially for inpatients, regular blood sampling is needed for health monitoring, but regular blood sampling can cause a plurality of wounds to the body of the patient, and the catheter, the indwelling needle and the injection needle which are implanted into the human body solve the problem of excessive wounds, but the existing blood sampling equipment has large blood sampling amount, can not directly and accurately extract blood samples quantitatively, can not provide solutions for various tests (such as various diagnostic test paper for detecting the blood samples in accurate quantitative mode) which need accurate quantitative blood samples to detect, and is difficult to realize bedside detection, rapid result output and rapid diagnosis.
At present, blood sampling equipment which can realize the micro-sampling function like a pipettor, a micro-sampler and the like does not exist in the market. The existing micro sample injection devices such as a micro sample injector, a pipettor and the like all need to be operated in a laboratory place, and a fixed amount of blood samples cannot be directly and accurately extracted from an intravascular catheter, an indwelling needle, an injection needle and the like which are indwelling in a human body, because the intravascular catheter, the indwelling needle, the injection needle and the like are directly inserted into a blood vessel of the human body, and interfaces are luer connectors. The existing microsamplers, pipettors and the like cannot be directly connected with intravascular catheters, indwelling needles, injection needles and the like because the connecting ports are not matched, and even if the connection is successful through a certain technical means, blood samples with fixed quantity cannot be accurately transferred due to factors such as intravascular pressure, blood viscosity and the like.
The invention has simple structure and no special use method, can directly connect the device with an intravascular catheter, an indwelling needle, an injection needle and the like, directly extracts quantitative blood samples from human bodies, provides a solution for various tests (such as various diagnostic test paper for detecting the blood samples needing accurate quantitative determination) which need accurate quantitative blood samples to detect, thereby realizing bedside detection, quick diagnosis and quick result output and providing a more efficient way for diagnosis and treatment of patients.
Disclosure of Invention
The invention provides a device for accurately and quantitatively extracting a blood sample, which is used for simply and easily taking a quantitative blood sample.
The invention provides a device for accurately and quantitatively extracting a blood sample, which comprises a liquid transfer cavity, a residual liquid absorber, a liquid transfer power mechanism, a sample inlet and a sample outlet, wherein the sample inlet is provided with a first non-return mechanism, the sample outlet is provided with a second non-return mechanism, the sample inlet is connected with the front end of the liquid transfer cavity, the liquid transfer power mechanism is connected with the residual liquid absorber, the liquid transfer cavity comprises an accurate sampling cavity, the residual liquid absorber is connected with one end of the accurate sampling cavity, and the sample outlet is connected with the other end of the accurate sampling cavity through the second non-return mechanism.
Furthermore, the sample inlet is also provided with a luer locking joint.
Further, the first non-return mechanism may be selected from one of a catheter clip, a puncture valve, a non-return valve, or other device that controls blood passage.
Further, the second non-return mechanism may be selected from one of a catheter clip, a puncture valve, a non-return valve, or other device that controls blood passage.
Further, the accurate sampling cavity is of a columnar structure.
Furthermore, the liquid transfer power mechanism is a device capable of extracting and injecting blood such as a syringe, an ear washing ball, a pipette, a pump and the like.
Further, the residual liquid absorber is provided with a breathable blood-sucking material.
Further, the residual liquid absorber is also provided with a liquid storage tank.
Still further, the precision sampling chamber includes a volume adjustment device.
Furthermore, a plurality of scales are arranged along the extending direction of the accurate sampling cavity.
Furthermore, the volume adjusting device comprises an inner tube, an outer tube and a sealing ring, wherein one end of the outer tube is sleeved outside one end of the inner tube in a sliding mode, and the sealing ring is arranged between the outer tube and the inner tube.
Further, second non return mechanism includes casing, regulating part, the accurate sample chamber is located the regulating part, regulating part movable installation is in the casing, the regulating part is equipped with first work position, second work position in the casing, when the regulating part is located first work position, the both ends in accurate sample chamber link to each other with introduction port, residual liquid absorber respectively, just the accurate sample chamber is not linked together with a kind mouth, when the regulating part is located the second work position, the both ends in accurate sample chamber link to each other with a kind mouth, liquid transfer power unit respectively, just the accurate sample chamber is not linked together with the introduction port.
Furthermore, the device also comprises a test paper card, wherein the test paper card is detachably arranged outside the liquid transferring cavity, a blood collecting area is arranged at the sample outlet of the test paper card, and the blood collecting area is opposite to the sample outlet.
Compared with the prior art, the quantitative blood sampling device has the advantages that the sample inlet, the sample outlet, the residual liquid absorber and the liquid transfer power mechanism are sequentially arranged, the first non-return mechanism and the second non-return mechanism are matched for working, and the quantitative blood sampling is realized by utilizing the liquid transfer cavity between the sample outlet and the residual liquid absorber. Meanwhile, the quantitative collection device is simple in structure, quantitative collection can be achieved only by simply controlling the first non-return mechanism, the second non-return mechanism and the liquid transfer power mechanism, the use by nurses is facilitated, and the training difficulty is reduced.
Drawings
Fig. 1 is an assembly view of embodiment mode 1 of the present invention;
fig. 2 is an assembly view of embodiment mode 2 of the present invention;
fig. 3 is an assembly view of embodiment mode 3 of the present invention;
FIG. 4 is a schematic view of a volume-minimum structure of the volume-adjusting device according to the embodiment of the present invention;
FIG. 5 is a schematic view of a maximum volume of the volume adjusting device according to the embodiment of the present invention;
FIG. 6 is a schematic cross-sectional view of a second check mechanism of an embodiment of the invention in a first operating position;
Fig. 7 is a schematic cross-sectional view of a second check mechanism of an adjusting member in a second working position according to an embodiment of the invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.
The embodiment of the invention discloses a device for accurately and quantitatively extracting a blood sample, which comprises a liquid transfer cavity 5, a residual liquid absorber 6, a liquid transfer power mechanism 8, a sample inlet and a sample outlet 4, wherein the sample inlet is provided with a first non-return mechanism 2, the sample outlet 4 is provided with a second non-return mechanism, the sample inlet is connected with the front end of the liquid transfer cavity 5, the liquid transfer power mechanism 8 is connected with the residual liquid absorber 6, the liquid transfer cavity 5 comprises an accurate sampling cavity, the residual liquid absorber 6 is connected with one end of the accurate sampling cavity, and the sample outlet 4 is connected with the other end of the accurate sampling cavity through the second non-return mechanism.
As shown in fig. 1, the device has a blood flow line 3, and a pipetting chamber 5 is provided in the blood flow line 3. Including moving liquid chamber 5, liquid transfer power unit 8, it is equipped with inlet, play appearance mouth 4 to move the liquid chamber, liquid transfer power unit 8 links to each other with raffinate absorber 6, raffinate absorber 6 links to each other with moving liquid chamber 5, play appearance mouth 4 is located between inlet, raffinate absorber 6, inlet department is equipped with first non return mechanism 2, play appearance mouth 4 department is equipped with second non return mechanism, and the accurate sample chamber is located raffinate absorber 6 and goes out between appearance mouth 4.
When blood is taken, the sample inlet is connected with the needle tube inserted into a human body, the first non-return mechanism is opened, the second non-return mechanism is closed, the liquid transfer power mechanism is controlled to work, the liquid transferring cavity is in a negative pressure state, and the blood flows into the liquid transferring cavity; when the blood flows to the residual liquid absorber 6, the liquid transfer power mechanism is stopped to be controlled to work, the residual liquid absorber 6 or the liquid storage tank 9 absorbs excessive blood, the second non-return mechanism is opened, the first non-return mechanism is closed, the liquid transfer power mechanism is controlled to work reversely, the liquid transferring cavity is in a positive pressure state, the blood flows out from the sample outlet, and the volume of the flowing blood is the volume of the liquid transferring cavity 5 between the sample outlet and the residual liquid absorber 6 or the liquid storage tank 9. The device can be directly connected with a built-in catheter, an indwelling needle, an injection needle and the like, the syringe is used for sucking and injecting, the opening and closing of the two check mechanisms and the liquid transferring cavity for accurately controlling the volume of the inner cavity are skillfully utilized to quantitatively transfer blood to a fixed area, the device can quantitatively transfer any liquid, and the conventional devices such as a micropipettor and the like can only transfer simple liquid which is low in viscosity and easy to transfer.
According to the embodiment of the invention, the first non-return mechanism and the second non-return mechanism are adopted, so that the blood and the outside air which are extracted can be prevented from flowing back into the human body, and the safety of the human body is improved. In addition, the embodiment of the invention realizes the quantitative adoption of blood by utilizing the liquid transfer cavity between the sample outlet, the residual liquid absorber or the liquid storage tank through the sample inlet, the sample outlet, the residual liquid absorber or the liquid storage tank and the liquid transfer power mechanism which are arranged in sequence and matching with the opening and the closing of the first non-return mechanism and the second non-return mechanism. Meanwhile, the embodiment of the invention has a simple structure, quantitative collection can be realized by simply controlling the first non-return mechanism, the second non-return mechanism and the liquid transfer power mechanism, the use by nurses is convenient, and the training difficulty is reduced.
Optionally, the sample inlet is further provided with a luer lock connector 1.
Wherein, the luer locking joint 1 can be stably connected with a built-in catheter, an indwelling needle and an injection needle which are inserted into a human body, and the disconnection caused by the pressure problem is avoided.
Optionally, the first check mechanism 2 may be one of a catheter clamp, a puncture valve, and a check valve.
Optionally, the second check mechanism may be selected from one of a catheter clamp, a puncture valve, and a check valve.
The first non-return mechanism 2 and the second non-return mechanism can adopt non-return structures which can be manually controlled to open, such as a catheter clamp, a puncture valve and the like, and can also adopt a one-way valve structure which can only flow liquid in one way, such as a non-return valve and the like, so that the blood can only flow into the liquid moving cavity 5 through the first non-return mechanism 2 and can only flow out of the liquid moving cavity through the second non-return mechanism. In the embodiment of the invention, the first check mechanism and the second check mechanism are both check valves as an example.
Optionally, the pipetting cavity 5 between the liquid transfer power mechanism 8 and the sample outlet 4 is of a columnar structure.
Optionally, the liquid transfer power mechanism 8 is a syringe 8.
In the embodiment of the present invention, an injector is taken as an example, and as shown in fig. 1 to 3, the liquid transfer power mechanism 8 is an injector 8, and a rubber stopper 7 of the injector is disposed in the injector 8. A liquid storage tank 9 for storing redundant blood is arranged on one side of the residual liquid absorber 6 between the tail end of the liquid transferring cavity 5 and the injector 8, and air-permeable water absorption pads for absorbing redundant blood are arranged in the residual liquid absorber 6 and the liquid storage tank 9.
Taking mode 1 as an example, as shown in fig. 1, the device is connected with a built-in catheter, an indwelling needle, an injection needle and the like through a luer lock connector 1, after the connection, a syringe 8 starts to suck, a first check mechanism 2 is opened, the suction is stopped when blood flows to the position of a residual liquid absorber 6, the syringe 8 is controlled to start to inject back, and when the injection is carried out, the first check mechanism 2 is closed under the action of pressure, and the blood sample flows out from a sample outlet 4; finally, the volume of the blood flowing out of the sample outlet 4 is the volume of the inner cavity of the pipeline between the two dotted lines (namely the volume of the liquid transferring cavity 5), and the tail part of the sample outlet 4 can be connected with a blood receiving device; the purpose of accurately and quantitatively extracting the blood sample can be realized by controlling the volume of the inner cavity of the pipeline with two virtual line segments through the design and the production process. In the whole process, the user can meet the requirement only by pulling and pushing the injector, and the requirement on the user is low.
Particularly, move liquid chamber end and be equipped with reservoir 9, reservoir 9 is located column structure moves liquid chamber end, is close to the one end of liquid transfer power unit 8, is equipped with ventilative pad that absorbs water in the reservoir.
The reservoir is used for absorbing and storing redundant blood, the blood in the reservoir is separated from the pipetting cavity when the power mechanism applies positive pressure, and the blood in the reservoir cannot enter the pipetting cavity, so that the blood sample can be accurately and quantitatively pipetted by controlling the volume of the pipetting cavity.
Taking the mode 2 as an example, as shown in fig. 2, the device is connected with a built-in catheter, an indwelling needle, an injection needle and the like through a luer lock connector 1, after the connection, the injector 8 starts to suck, the first check mechanism 2 is opened, the blood stops sucking when flowing to the position of the liquid storage tank 9, the injector 8 is controlled to start injecting back, and when the blood is injected, the first check mechanism 2 is closed under the action of pressure, and the blood sample flows out from the sample outlet 4; finally, the volume of the blood flowing out of the sample outlet 4 is the volume of the inner cavity of the pipeline between the two dotted lines, and the tail part of the sample outlet 4 can be connected with a blood receiving device; the purpose of accurately and quantitatively extracting the blood sample can be realized by controlling the volume of the inner cavity of the pipeline with two virtual line segments through the design and the production process.
In the embodiment of the invention, the liquid storage tank is arranged, so that redundant blood can be absorbed and stored for the requirement of multiple sampling (referring to the function of the liquid storage tank).
In particular, the columnar structure comprises a volume adjustment device 10.
Taking the mode 3 as an example, as shown in fig. 3, the device is connected with a built-in catheter, an indwelling needle, an injection needle and the like through a luer lock connector 1, after the connection, the injector 8 starts to suck, the first check mechanism 2 is opened, the blood stops sucking when flowing to the position of the liquid storage tank 9, the injector 8 is controlled to start injecting back, and when the blood is injected, the first check mechanism 2 is closed under the action of pressure, and the blood sample flows out from the sample outlet 4; finally, the volume of the blood flowing out of the sample outlet 4 is the volume of the inner cavity of the pipeline between the two dotted lines, and the tail part of the sample outlet 4 can be connected with a blood receiving device; the volume adjusting device 10 marks volume scales on the outer surface of the pipeline, and the volume of the inner cavity of the pipeline with two virtual line segments can be changed by adjusting the volume adjusting device 10, so that the volume of the blood sample can be extracted as required; the inner cavity volume of the two virtual line segment pipelines and the volume adjusting device 10 are well controlled by the design and the production process, so that the purpose of accurately and quantitatively extracting the blood sample can be realized.
In particular, the volume adjustment device is provided with a plurality of scales along the direction in which the columnar structure extends.
Wherein, the scale is a volume scale, and the scale between the liquid transfer power mechanism 8 and the sample outlet 4 sequentially represents the amount of the blood extracted.
According to the embodiment of the invention, the volume of the volume adjusting device can be adjusted as required by adopting the pipeline volume adjusting device, so that the volume of the blood sample to be extracted can be adjusted as required.
Specifically, as shown in fig. 3, 4 and 5, the volume adjusting device includes an inner tube 31, an outer tube 32 and a sealing ring 33, wherein one end of the outer tube 32 is slidably sleeved outside one end of the inner tube 31, and the sealing ring 33 is disposed between the outer tube 32 and the inner tube 31.
As shown in fig. 4 and 5, the outer surface of the inner tube 31 has a screw 311, one end of the outer tube 32 is screwed to the inner tube 31, and the seal ring 33 is fixed to the inner tube 31 to seal the space between the outer tube 32 and the inner tube 31. By rotating the outer tube 32, the lumen space between the two dotted lines of the inner tube 31 and the outer tube 32 can be adjusted, and the adjustment and control of the amount of the blood sample to be extracted can be realized.
Optionally, as shown in fig. 6 and 7, the second non-return mechanism includes a housing 42 and an adjusting member 41, the accurate sampling cavity 51 is located in the adjusting member 41, the adjusting member 41 is movably installed in the housing 42, the adjusting member 41 is provided with a first working position and a second working position in the housing 42, the adjusting member 41 is located at the first working position, two ends of the accurate sampling cavity 51 are respectively connected with the sample inlet and the first passage 52 (i.e. the residual liquid absorber), and the accurate sampling cavity 51 is not communicated with the sample outlet 4, the adjusting member 41 is located at the second working position, two ends of the accurate sampling cavity 51 are respectively connected with the sample outlet 4 and the liquid transfer power mechanism 8, and the accurate sampling cavity 51 is not communicated with the sample inlet.
As shown in fig. 6 and 7, the housing 42 is composed of a front rubber pad and a rear rubber pad, and has sealing and conducting functions. The first check mechanism 2 is a check valve, the adjusting member 41 is a rotatable cylindrical inner core 41, the inner core 41 has a rotating handle 411, and the axis of the inner core 41 is provided with a first passage 52, when the inner core 41 rotates, the position of the first passage 52 is fixed, and the first passage can be connected with the liquid transfer power mechanism 8. The first passage 52 is a pipeline structure, a third passage 54 and a fourth passage 55 are arranged in the shell 42, and the first passage 52, the second passage 53 and the precise sampling cavity 51 are positioned in the inner core 41. A water-blocking sponge 521 is provided in the first passage 52 to block the flow of blood while ensuring air fluidity.
During blood sampling, as shown in fig. 6, the handle 411 is pushed to rotate the inner core 41 to be in the first working position, the sample inlet, the precise sampling cavity 51, the third passage 54, the first passage 52 and the second passage 53 are sequentially connected to form a blood sampling channel, and a blood sample sequentially passes through the sample inlet, the precise sampling cavity 51, the third passage 54, the first passage 52 and the second passage 53 and is blocked by a water-blocking sponge 521 in the first passage 52.
During blood transfusion, as shown in fig. 7, the inner core 41 is rotated to be in the second working position, the second passage 53, the fourth passage 55, the precise sampling cavity 51 and the sample outlet 4 are sequentially connected to form a blood transfusion passage, the piston 7 in the infusion apparatus 8 is pushed, air input by the infusion apparatus 8 sequentially passes through the second passage 53, and the fourth passage 55 applies pressure to a blood sample in the precise sampling cavity 51 to enable the blood sample to flow out of the sample outlet 4, so that precise blood sampling is realized.
The embodiment of the invention realizes the effect of accurate sampling by arranging the inner core structure and transferring the blood sample in the accurate sampling cavity by utilizing the rotation of the inner core, and has the advantage of simple operation.
Particularly, the device further comprises a test paper card 10, wherein the test paper card 10 is detachably arranged outside the pipetting cavity 5, a blood collecting area 101 is arranged at the sample outlet 4 of the test paper card 10, and the blood collecting area 101 is opposite to the sample outlet 4.
Wherein, move the liquid chamber 5 outside and be equipped with the draw-in groove structure in outlet 4 department, make test paper card 10 detachable install in the draw-in groove, and the blood collection zone 101 of test paper card 10 is relative with outlet 4, makes the blood sample can directly contact with the test paper, reduces external factors's interference risk.
Finally, it should be noted that the above-mentioned embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above-mentioned embodiments, it should be understood by those skilled in the art that the modifications and equivalents of the specific embodiments of the present invention can be made by those skilled in the art after reading the present specification, but these modifications and variations do not depart from the scope of the claims of the present application.
Claims (10)
1. The utility model provides a device of accurate ration extraction blood sample, a serial communication port, the device is including moving liquid chamber, residual liquid absorber, liquid transfer power unit, introduction port, appearance mouth, introduction port department is equipped with first non return mechanism, appearance mouth department is equipped with second non return mechanism, the introduction port links to each other with the front end that moves the liquid chamber, liquid transfer power unit links to each other with the residual liquid absorber, it includes the accurate sample chamber to move the liquid chamber, the residual liquid absorber links to each other with accurate sample chamber one end, the appearance mouth links to each other with the other end in accurate sample chamber through second non return mechanism.
2. The device for accurately and quantitatively drawing a blood sample according to claim 1, wherein the sample inlet is further provided with a luer lock connector, the first check mechanism is one of a catheter clamp, a puncture valve and a check valve, and the second check mechanism is one of a catheter clamp, a puncture valve and a check valve.
3. The device for accurately and quantitatively drawing a blood sample according to claim 1, wherein the accurate sampling chamber has a cylindrical structure.
4. The device for accurately and quantitatively drawing a blood sample according to claim 1, wherein the liquid transfer power mechanism is a blood drawing and injecting device, and the liquid transfer power mechanism can be one of a syringe, an ear washing ball, a pipette and a pump.
5. The device for accurately and quantitatively drawing a blood sample according to claim 1, wherein the residual liquid absorber has a reservoir.
6. The apparatus of claim 1, wherein the residual liquid absorber is filled with a gas-permeable blood-sucking material.
7. The device for accurately and quantitatively drawing a blood sample according to claim 1, wherein the accurate sampling chamber comprises a volume adjusting means.
8. The apparatus for accurately and quantitatively drawing a blood sample according to claim 7, wherein the volume adjusting device comprises an inner tube, an outer tube, and a sealing ring, wherein one end of the outer tube is slidably sleeved outside one end of the inner tube, and the sealing ring is disposed between the outer tube and the inner tube.
9. The device for accurately and quantitatively extracting blood samples according to claim 1, wherein the second non-return mechanism comprises a housing and an adjusting member, the accurate sampling cavity is located in the adjusting member, the adjusting member is movably mounted in the housing, the adjusting member is provided with a first working position and a second working position in the housing, when the adjusting member is located in the first working position, two ends of the accurate sampling cavity are respectively connected with the sample inlet and the residual liquid absorber, and the accurate sampling cavity is not communicated with the sample outlet, when the adjusting member is located in the second working position, two ends of the accurate sampling cavity are respectively connected with the sample outlet and the liquid transfer power mechanism, and the accurate sampling cavity is not communicated with the sample inlet.
10. The device for accurately and quantitatively drawing the blood sample according to claim 9, further comprising a test paper card, wherein the test paper card is detachably mounted outside the pipetting cavity, the test paper card is provided with a blood collecting area at the sample outlet, and the blood collecting area is opposite to the sample outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010639053.3A CN111839549B (en) | 2020-07-06 | Device for accurately and quantitatively extracting blood sample |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010639053.3A CN111839549B (en) | 2020-07-06 | Device for accurately and quantitatively extracting blood sample |
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| CN111839549A true CN111839549A (en) | 2020-10-30 |
| CN111839549B CN111839549B (en) | 2024-07-12 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112461602A (en) * | 2020-11-27 | 2021-03-09 | 广东昊朗医疗科技有限责任公司 | Simple and easy accurate quantitative sampling device of blood |
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| US4669486A (en) * | 1984-01-20 | 1987-06-02 | Anders Trell | Device for taking and dispensing blood samples for the purpose of determining blood sedimentation |
| EP0363485A1 (en) * | 1987-06-18 | 1990-04-18 | Terumo Kabushiki Kaisha | Method and apparatus for collecting blood sample |
| JP2001017539A (en) * | 1999-07-09 | 2001-01-23 | Terumo Corp | Blood collecting device |
| US20010027269A1 (en) * | 2000-03-29 | 2001-10-04 | Yousuke Tanaka | Liquid sampler and blood analyzer using the same |
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| CN112461602A (en) * | 2020-11-27 | 2021-03-09 | 广东昊朗医疗科技有限责任公司 | Simple and easy accurate quantitative sampling device of blood |
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