Background technology
Sample collection device is the core component in the field, laboratory on the chip (lab-on-a-chip), it is widely used in protein-chip, DNA chip, delivery system, micro-total analysis system (micro total analysis system), microreactor etc., requires accurate liquid control.
Especially, be used for medical diagnosis on disease or chemico-analytic sample collection device and be mainly used in the biological sample of collecting various liquid phases, such as urine, blood, body fluid, saliva etc. and their biased sample.Therefore, the material of sample collection device and structure must suitably be selected according to the use of the kind of the sample that will be collected and sample.
For example, when sample collection device was used for medical diagnosis on disease, because its disposable characteristics, sample collection device used polymkeric substance manufacturing usually.When using polymkeric substance, but the thermoset copolymer material of injection mo(u)lding (injection-moldable) can be used, also other material such as timber, paper etc. can be used.
In addition, sample collection device is by direct processable polymer or by forming mould and polymkeric substance being transferred to mould manufacturing.At this moment, the channel architecture that is used to collect and discharge sample must be designed to be able to collect and discharge easily and fast and easily the sample of accurate amount.
In the biological specimen collection device of routine, proposed to be used to collect patient's urine urine collecting, use absorbent material to collect the device etc. of infant urine.
Yet conventional sample collection device has complicated structure, is difficult to collect and discharge the sample of accurate amount.Especially, under the situation of biochip for diagnosing, the amount of diagnostic sample must be accurately controlled, thereby guarantees accuracy and repeatability that sensor reads.Yet, because the sample of precise volumes can not easily be collected and discharge to conventional sample collection device, so be difficult to guarantee the accuracy that reads and the repeatability of sensor.
In addition, owing to having, most of devices are used to collect a large amount of structures of samples rather than a spot of sample, so it is unsuitable for mainly using the medical diagnosis on disease field of small amount of sample.
And when use was collected sample such as hygroscopic materials such as cellulose, sponges, the possibility that sample overflows was big, and accurately the sample of volume can not be collected and discharge.
Embodiment
More fully describe the present invention with reference to accompanying drawing hereinafter, one exemplary embodiment of the present invention is shown in the drawings.Yet the present invention can implement with different forms, and is not construed as limited to the embodiment that sets forth here.
Figure 1A and Figure 1B are the views that the structure of the sample collection device of one exemplary embodiment according to the present invention is shown, and wherein Figure 1A is a front view, and Figure 1B is a vertical view.
As shown in the figure, the adjusting parts 120 that the sample collection device 100 of one exemplary embodiment comprises fluid passage 110 and is couple to fluid passage 110 according to the present invention.
Fluid passage 110 has tubular, collected fluid storage within it in the portion space 112.Although fluid passage 110 shown in the drawings has the tubular of circular cross section, fluid passage 110 is not limited thereto, but can be have various xsects tubular.
Inlet 116 is formed on an end place of fluid passage 110, and sample is collected and discharged by inlet 116.Inlet 116 can have the xsect of inclination, makes sample easily to collect.
Fluid passage 110 comprises and being formed on and the opening 114 of inlet 116 with preset distance spaced positions place.Opening 114 is formed on the part place on the surface of fluid passage 110, to help flowing of air when collecting sample.Although opening 114 shown in the drawings has ellipse, opening 114 is not limited thereto, but can be in quantity and variation in shape.The position of opening can consider that the volume of the sample that will be collected determines.
Regulate parts 120 and be couple to the other end of fluid passage 110, and be inserted in the fluid passage 110 to regulate the discharge of collected sample.Just, regulate parts 120 and can be used as a kind of piston, it is inserted in the fluid passage 110 and moves on the longitudinal direction of fluid passage 110.In order to discharge all or part of sample that is stored in the fluid passage, regulate the mobile of parts 120 and be conditioned.Certainly, sample can use replacement adjusting portion parts 120 such as other means such as gravity and discharge.
Here, fluid passage 110 and adjusting parts 120 can be formed by polymkeric substance, for example from by cyclic olefine copolymer (COC), polymethylmethacrylate (PMMA), polycarbonate (PC), cyclic olefin polymer (COP), liquid crystal polymer (LCP), dimethyl silicone polymer (PDMS), polyamide (PA), tygon (PE), polyimide (PI), polypropylene (PP), polyphenylene oxide (PPE), polystyrene (PS), polyoxymethylene (POM), polyetheretherketone (PEEK), Poly-s 179 (PES), polyethylene terephthalate (PET), polytetrafluoroethylene (PTFE), Polyvinylchloride (PVC), polyvinylidene fluoride (PVDF), polybutylene terephthalate (PBT), PEP (FEP), cross the fluoroalkylation thing (perfluoralkoxyalkane, PFA) and select in the group formed of epoxy one or both or multiple.
In addition, the template plastic base can be made by common mechanical process, such as digital control (NC) processing or such as photoetching and etched semiconductor technology and injection mo(u)lding, hot moulding (hot embossing), casting, optical three-dimensional molded object, laser ablation, rapid prototyping and serigraphy.
Fig. 2 A and Fig. 2 B are that the sample collection device that use one exemplary embodiment according to the present invention is shown carries out the collection of sample and the view of discharging operation, and Fig. 2 A illustrates the state of the sample of collecting constant basis, and Fig. 2 B illustrates the state that sample is discharged from.
Shown in Fig. 2 A, sample is collected along tubular fluid passage 110 by surface tension.Just, because plastic tube has the shape of the cut sides with inclination of hydrophobic character and inlet 116 usually, there is not sample to overflow so can collect the sample of constant basis.When collecting sample, because the air in the fluid passage 110 is by opening 114 discharges, so can easily collect sample.Therefore, be immersed in the sample that is stored in the container or contact with the sample that flows, can easily collect sample by the inlet 116 that makes fluid passage 110 by inlet 116 with fluid passage 110.
Here, the amount of the sample of being collected by sample collection device 117 is determined by the xsect of fluid passage 110 and the position of opening 114.When collecting sample, the opening that flows through of air is regulated.When position that collected sample arrives opening 114 when stopping opening 114, air can't flow, so the collection of sample is stopped automatically.Thereby 110 inlet 116 is collected sample to opening from the fluid passage, and air 118 is retained in from opening 114 to the fluid passage 110 of regulating parts 120.Just, sample from the fluid passage 110 inlet 116 collect with identical amount to opening 114 at every turn.The amount of collected sample can be 1 to 10000 μ L, its per sample gathering-device structural design and differently adjust.
Shown in Fig. 2 B, move (as shown by arrows) by making adjusting parts 120 towards inlet 116, collected sample is discharged from.At this moment, can discharge the sample of same amount at every turn.Certainly, sample also can be discharged by gravity, does not regulate parts 120 and do not use, and the amount of the sample of being discharged also can be adjusted by adjusting the displacement of regulating parts 120.
According to the present invention as mentioned above, can easily collect and discharge the sample of constant basis.Therefore, in biological MEMS (micro electro mechanical system) (Bio-MEMS), because the sample of constant basis can be provided for the early diagnosis or the chemical analysis of disease by reading of sensor, so can guarantee the accuracy that reads.
Fig. 3 A to Fig. 3 C illustrates the view that reads of sensor of the sample collection device of use one exemplary embodiment according to the present invention.
As shown in Figure 3A, after the sample collection device 100 and sensor chip 200 of preparation one exemplary embodiment according to the present invention, the inlet 210 of the inlet 116 proximity sense chips 200 of sample collection device 100 is provided with.
Here, sample collection device 100 has aforesaid structure, and the sample of constant basis uses sample collection device 100 to collect.In addition, diagnostic sensor chip 200 fetch unit 220 that comprises the inlet 210 of introducing sample and be used to read the sample of introducing.
Shown in Fig. 3 B, the adjusting parts 120 of sample collection device 100 promote sample to be incorporated into the inlet of diagnostic sensor chip 200 to discharge collected sample towards inlet 116.
Shown in Fig. 3 C, the injection part 120 of sample collection device 100 is promoted fully to discharge collected sample fully.Thereby the sample 117 of constant basis is introduced in the inlet 210 of diagnostic sensor chip 200, and the result is read in fetch unit 220 demonstrations.
As mentioned above, the sample collection device of the sample of constant basis can be easily collected and be discharged in use, can guarantee accuracy and repeatability that sensor reads.
According to the present invention, sample collection device comprises the fluid passage, this fluid passage has the opening with preset distance and inlet spaced positions place, this filling orifice is formed on an end of fluid passage, this sample collection device can easily be collected the sample of constant basis, and collected sample can use the adjusting parts of the other end that is connected to the fluid passage easily to discharge.
Especially, because sample collection device has simple structure, so it can be disposable apparatus with the low-cost production.Therefore, the biological sample that may have high probability infection and provide discomfort to feel can be by safety and is collected easily and discharge.
In addition, because the sample of constant basis can easily be collected, so this device can be applied to laboratory biological plant on the various chips, comprise test-strips chip, urine bar, protein-chip, DNA chip, delivery system, little biochemical analysis system and little biochemical reactor.
In drawing and description, demoncal ration embodiment of the present invention is disclosed, although adopted specific term, they only use with general and descriptive implication, rather than the purpose in order to limit.About protection scope of the present invention, it is set forth in claims.Therefore, it will be understood by those skilled in the art that and to carry out the various changes on form and the details therein and do not deviate from the spirit and scope that are defined by the claims of the present invention.
The application requires in right of priority and the rights and interests of the korean patent application No.10-2010-0091588 of the korean patent application No.10-2010-0034438 of submission on April 14th, 2010 and submission on September 17th, 2010, and its full content is incorporated herein by reference.