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WO2010022543A1 - 流体检测试片 - Google Patents

流体检测试片 Download PDF

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Publication number
WO2010022543A1
WO2010022543A1 PCT/CN2008/001551 CN2008001551W WO2010022543A1 WO 2010022543 A1 WO2010022543 A1 WO 2010022543A1 CN 2008001551 W CN2008001551 W CN 2008001551W WO 2010022543 A1 WO2010022543 A1 WO 2010022543A1
Authority
WO
WIPO (PCT)
Prior art keywords
fluid
nitrocellulose
detecting test
zone
test piece
Prior art date
Application number
PCT/CN2008/001551
Other languages
English (en)
French (fr)
Inventor
谢治纬
谢文彬
吴怡荏
Original Assignee
红电医学科技股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 红电医学科技股份有限公司 filed Critical 红电医学科技股份有限公司
Priority to US12/306,972 priority Critical patent/US20110318822A1/en
Priority to CN2008801304295A priority patent/CN102099682B/zh
Priority to JP2011522364A priority patent/JP5139581B2/ja
Priority to EP08800549.1A priority patent/EP2336776B1/en
Priority to PCT/CN2008/001551 priority patent/WO2010022543A1/zh
Priority to KR1020117001870A priority patent/KR20110046451A/ko
Publication of WO2010022543A1 publication Critical patent/WO2010022543A1/zh

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Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/48Biological material, e.g. blood, urine; Haemocytometers
    • G01N33/50Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
    • G01N33/53Immunoassay; Biospecific binding assay; Materials therefor
    • G01N33/536Immunoassay; Biospecific binding assay; Materials therefor with immune complex formed in liquid phase
    • G01N33/537Immunoassay; Biospecific binding assay; Materials therefor with immune complex formed in liquid phase with separation of immune complex from unbound antigen or antibody
    • G01N33/538Immunoassay; Biospecific binding assay; Materials therefor with immune complex formed in liquid phase with separation of immune complex from unbound antigen or antibody by sorbent column, particles or resin strip, i.e. sorbent materials
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/48Biological material, e.g. blood, urine; Haemocytometers
    • G01N33/50Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
    • G01N33/53Immunoassay; Biospecific binding assay; Materials therefor
    • G01N33/543Immunoassay; Biospecific binding assay; Materials therefor with an insoluble carrier for immobilising immunochemicals
    • G01N33/54366Apparatus specially adapted for solid-phase testing
    • G01N33/54386Analytical elements
    • G01N33/54387Immunochromatographic test strips
    • G01N33/54388Immunochromatographic test strips based on lateral flow

Definitions

  • the present invention relates to a test strip, and more particularly to a fluid test strip for use in biochemical assays and immunoassays. Background technique
  • the fluid detecting test piece is designed with a flow path or a micro flow path structure and a surface hydrophobicity treatment on the substrate or the substrate, and the water around the flow path is not a water absorbing material.
  • the fluid to be tested mostly contains a highly viscous composition such as protein or sugar, so when the fluid to be tested flows, it will remain on the flow path, so that the fluid to be tested cannot be completely reacted, so that not only The waste of the fluid to be tested is more likely to cause errors in the final test results.
  • the fluid detecting test piece of the prior art can be designed with a micro flow path structure for fluid transfer, and is a capillary phenomenon generated by the micro flow path structure to passively transfer the fluid through the flow path to the reaction detection area;
  • the driving force is given by means of pressurization or vacuum negative pressure, or one or more micro valves or valves are arranged in the flow channel, so that the fluid can be Actively and sequentially pass through the flow path to reach the reaction detection area.
  • the fluid to be tested is often injected or entangled in the flow path to cause the flow path to block, causing an actual measurement error, or even causing the test to fail, and the micro-actuator Add or increase the overall design difficulty and test piece cost.
  • test piece of the prior art is used for making a flow path or a micro flow path structure on the substrate by molding, injection molding or imprinting, so polyethylene (PE), poly must be used.
  • PE polyethylene
  • Higher-priced plastic polymers such as vinyl chloride (PVC) or polypropylene (PP) are used as materials and the molds are worn faster, which in turn leads to an increase in the overall cost of the test piece.
  • a primary object of the present invention to provide a fluid detecting test piece which has a nitrocellulose layer which can absorb liquid, thereby avoiding liquid residue in the flow path.
  • Another object of the present invention is to provide a fluid detecting test piece having a water absorbing nitrocellulose layer. Since the amount of liquid absorbed per unit volume of nitrocellulose is constant, the nitrocellulose layer can be set on the substrate. volume, Provide quantitative quantification of the fluid to be tested.
  • the technical solution of the present invention is a fluid helium test piece, which mainly comprises a substrate, and the upper surface of the substrate is recessed downwardly with at least a first-class channel, and the flow channel comprises a first fluid region sequentially connected, The two fluid zone and the third fluid zone, the first fluid zone is for the injection of fluid.
  • the fluid detecting test piece is characterized by having a nitrocellulose layer formed at the bottom of the second fluid zone and the third fluid zone, the nitrocellulose layer comprising a hollow network configuration, wherein the second fluid zone is for fluid transfer, The third fluid zone is a reaction for the fluid, and the average thickness of the nitrocellulose layer of the second fluid zone is no greater than the thickness of the nitrocellulose layer of the third fluid zone.
  • the fluid detecting test piece also has a reactive material formed in a hollow network configuration of the nitrocellulose layer.
  • the invention has the advantages of - having a liquid-absorbing nitrocellulose layer, avoiding liquid residue in the flow channel; and the amount of nitrocellulose absorbed per unit volume of the nitrocellulose layer is determined by setting the nitrocellulose layer on the substrate.
  • the volume provides the quantitative detection of the fluid to be tested; the nitrocellulose layer with a hollow network configuration destroys the bubbles in the fluid, avoiding the occurrence of bubbles blocking the flow path in the microfluidic technology, and making the quantitative analysis result accurate.
  • FIG. 1A is a schematic view showing a fluid detecting test piece according to a first embodiment of the present invention
  • FIG. 1B is a schematic view showing a cross section of a fluid detecting test piece according to a first embodiment of the present invention
  • FIG. 2A is a schematic view showing a fluid detecting test piece according to a second embodiment of the present invention.
  • Fig. 2B is a schematic view showing a cross section of a fluid detecting test piece according to a second embodiment of the present invention.
  • Main component symbol description is a schematic view showing a cross section of a fluid detecting test piece according to a second embodiment of the present invention.
  • Second fluid zone 112, 212 Third fluid zone 113, 213
  • the fluid detecting test piece 1 includes a substrate 10 and a support member 19.
  • the substrate 10 is recessed downwardly from the upper surface 100.
  • the flow path 11 includes a first fluid zone 111, a second fluid zone 112 and a third fluid zone 113 which are sequentially connected.
  • the first fluid zone 111 is for the injection of fluid. After the fluid is injected into the first fluid zone 111, the fluid is transferred to the third fluid zone 113 via the second fluid zone 112, where the components to be tested are biochemically or immune response.
  • substrate 1 is a biocompatible material.
  • FIG. 1B is a cross-sectional view taken along line AA of Figure 1A.
  • the nitrocellulose layers 1121 and 1131 having a hollow network configuration are formed at the bottoms of the second fluid region 112 and the third fluid region 113, and the reaction materials are contained in the hollow mesh configuration of the nitrocellulose layers 1121 and 1131.
  • the composition of the reactive material is related to the type of the component to be tested contained in the fluid. Further, since the nitrocellulose layers 1121 and 1131 are porous hollow structures, the fluid flowing in from the first fluid region 111 can be absorbed, and the components to be tested in the fluid and the reaction materials present in the nitrocellulose layer 1131 can be absorbed. Carry out the reaction.
  • nitrocellulose layers 1121 and 1131 are liquid-absorbable materials, fluids can be prevented from remaining in the flow path 11, and as the fluid flows through the hollow-mesh configuration of the nitrocellulose layers 1121 and 1131, the bubbles in the fluid It is destroyed, so that the air bubbles 11 can be prevented from being blocked by the air bubbles.
  • the reactions required for the detection are also different; and depending on the type of reaction, various signals are generated.
  • enzymes are used to catalyze the test substance in the fluid and cold.
  • Photochemical reagents which in turn produce optical signals of a specific wavelength for detection. Therefore, for biochemical testing, the reaction material will contain enzymes and corresponding chemical reagents.
  • to detect the presence of certain proteins eg, fetal protein, -fetoprotein
  • the reagent reacts with an antibody that has been bound to the protein to be tested, and emits a signal for detection.
  • the reaction material contains immunological reagents such as chemicals and antibodies. Therefore, the fluid detecting test piece provided by the present invention can be used for detecting various components to be tested in various biological samples (such as urine, blood, and the like).
  • the average thickness Da of the nitrocellulose layer 1121 of the second fluid region 112 is not greater than the thickness Db of the nitrocellulose layer 1131 of the third fluid region 113, that is, Da is less than or equal to Db, as shown in FIG. 1B in this embodiment, nitrification
  • the average thickness Da of the fibrous layer 1121 is smaller than the thickness Db of the nitrocellulose layer 1131 of the third fluid region 113.
  • the widths Wa and Wb of the second fluid region 112 and the third fluid region 113 are preferably at least 0.3ram.
  • the manner in which the nitrocellulose layers 1121 and 1131 are formed and the manner in which the reaction material is formed are as follows. First, a nitrocellulose powder is mixed with an organic solvent containing an ester and a ketone to form a nitrocellulose solution; and the nitrocellulose solution is cast in the second fluid region 112 and the first At the bottom of the three-fluid zone 113, after drying, a nitrocellulose layer 1121 is formed at the bottom of the second fluid zone 112, and a nitrocellulose layer 1131 is formed at the bottom of the third fluid zone 113.
  • the surface roughness (Ra value) of the flow path 11 is preferably between 3 ⁇ m and 50 ⁇ m.
  • a nitrocellulose layer having a hollow network configuration is formed.
  • the nitrocellulose powder is mixed with an organic solvent containing an ester and a ketone.
  • the preferred volume ratio is 1:9. Since the amount of liquid absorbed per unit volume of nitrocellulose is constant, the volume of the corresponding nitrocellulose solution can be derived from the volume of the fluid to be absorbed to be absorbed, and then cast. This makes it possible to fix the volume of the liquid required for detection and to be suitable for micro-testing.
  • the reaction solution containing the reaction material is injected into the nitrocellulose layers 1121 and 1131, and air-dried or lyophilized. Thereafter, it remains in the form of a powder in the nitrocellulose layers 1121 and 1131.
  • the manner in which the nitrocellulose layers 1121, 1131 and the reaction material are formed is formed by sequentially forming a nitrocellulose layer and then injecting the reaction material, and the reaction solution containing the reaction material may be added to the nitrocellulose powder.
  • the nitrocellulose solution is formed into a nitrocellulose layer 1121 and 1131 by air drying or freeze drying, and the reaction material is powdered and left in the nitrocellulose layer 1121 and 1131.
  • the first embodiment described above is a test strip having three fluid regions, and according to the spirit of the present invention, a fourth fluid region can be added to the flow channel for supply. Excess fluid in the flow path.
  • a test piece having four fluid zones of the second embodiment of the present invention will be described below.
  • FIG. 2A is a schematic diagram of a fluid detecting test piece according to a second embodiment of the present invention.
  • the substrate 20 of the fluid detecting test strip 2 is recessed from the upper surface 200 with a flow path 21, and the flow path 21 includes a first fluid region 211, a second fluid region 212, a third fluid region 213, and a fourth region which are sequentially connected.
  • the first fluid zone 211 is for the injection of a fluid. After the fluid is injected into the first fluid zone 211, the fluid is transferred to the third fluid zone 213 via the second fluid zone 212, where the components in the fluid undergo biochemical or immunological reactions. .
  • FIG. 2B which is a cross-sectional view taken along line AA of FIG. 2A
  • the bottom of the fourth fluid region 214 is the same as the second and third fluid regions 212 and 213, and a nitrocellulose layer 2141 is also formed, which is also a hollow network structure. Type for the storage of excess fluid. Further, in the hollow network configuration of the nitrocellulose layer 2141, similar to the nitrocellulose layers 2121 and 2131 at the bottom of the second and third fluid regions 212, 213, a reaction material reactive with the component to be tested in the fluid is also contained.
  • the nitrocellulose layer 2141 at the bottom of the fourth fluid zone 214 is identical in fabrication to the nitrocellulose layers 2121 and 2131 at the bottom of the second and third fluid zones 212, 213, and is cast in the second fluid zone with the nitrocellulose solution. 212, the third fluid zone 213 and the bottom of the fourth fluid zone 214 are further dried; and the formation of the reaction material in the nitrocellulose layers 2121, 2131 and 2141 can also be dried in the nitrocellulose layers 2121, 2131 and 2141.
  • the reaction solution containing the reaction material is injected, and the reaction material is dried into a powder form and left in the nitrocellulose by air drying or freeze drying.
  • the structure, the size and the interconnection relationship of the first fluid region, the second fluid region, and the third fluid region in the embodiment, the preferred material of the substrate, the surface roughness, the configuration of the nitrocellulose layer of the test piece, and the formation The composition, the preferred ratio of the nitrocellulose solution used, and the composition of the reaction material are the same as those in the first embodiment, and the description thereof will not be repeated here.

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  • Immunology (AREA)
  • Life Sciences & Earth Sciences (AREA)
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Description

流体检测试片 技术领域
本发明涉及一种检测试片, 特别是一种有关于生化检测与免疫检测所使用的流体 检测试片。 背景技术
以流体检测试片进行生化检测与免疫检测的公知技术中, 流体检测试片在其基板 或底材上设计有流道或微流道结构及表面亲疏水性处理,而因流道周围并非吸水材质, 且待测流体多为含有如蛋白质或是醣类等黏滞度高的组成物,所以当待测流体流过后, 会在流道上残留, 使得待测流体无法完全反应, 如此一来, 不仅造成待测流体的浪费, 更可能造成最终测试结果的误差。
此外, 公知技术的流体检测试片在流体传送方面, 可设计有微流道结构, 并是利 用微流道结构产生的毛细现象, 将流体经过流道被动传送至反应检测区域; 另一种方 式则是在注入待测流体时即利用加压或真空负压等方式, 给予流体一驱动力, 又或于 流道中设置一个或以上的微阀门(micro- actuator or valve)等设计, 使得流体可主动 并依序通过流道, 到达反应检测区域。 但是无论是上述任一种方式, 待测流体注入流 道后常常产生或卷入大小不一的气泡使得流道阻塞, 造成实际测量上的误差, 甚至致 使测试失败, 而微阀门(micro-actuator or valve)增设又增加整体设计困难度与试片 成本。
最后, 公知技术的检测试片, 在制作上多使用模铸、 射出成型或压印(imprint) 的方式在基板上做出流道或微流道结构, 所以必须使用聚乙烯(PE)、 聚氯乙烯(PVC) 或聚丙烯 (PP) 等价格较高的塑料聚合物作为材质且模具耗损较快, 进而造成试片的 总体成本的提高。
发明内容
为克服上述缺点, 本发明的主要目的, 是提供一种流体检测试片, 因具有可吸收 液体的硝化纤维层, 故可避免流道的液体残留。
本发明的另一目的, 是提供一种流体检测试片, 其具有可吸水的硝化纤维层, 由 于单位体积的硝化纤维吸收液体量是为定值,故可经由设定基板上硝化纤维层的体积, 而提供待测流体的定量捡测。
本发明的又一目的, 是提供一种流体检测试片, 具有中空网状构型的硝化纤维层, 由于流体流经中空网状构型时, 流体中的气泡会被破坏, 故可消弥较大的气泡, 避免 微流道技术中气泡阻塞流道的状况发生, 进而影响定量分析结果。
为达到上述目的, 本发明的技术解决方案是- 一种流体捡测试片, 主要包含一基板, 基板上表面向下凹设至少一流道, 此流道 包含依序连接的第一流体区、第二流体区与第三流体区, 第一流体区是供流体的注入。 此流体检测试片的特征在于具有硝化纤维层,形成于第二流体区与第三流体区的底部, 此硝化纤维层包含有中空网状构型, 其中第二流体区是供流体的传送, 第三流体区是 供流体的反应, 且第二流体区的硝化纤维层平均厚度不大于第三流体区硝化纤维层厚 度。 此外, 流体检测试片亦具有反应材料, 形成于硝化纤维层的中空网状构型中。
本发明的优点是- 具有可吸收液体的硝化纤维层, 避免了流道的液体残留; 其硝化纤维层单位体积 的硝化纤维吸收液体的量为定值, 可经由设定基板上硝化纤维层的体积, 而提供待测 流体的定量检测; 具有中空网状构型的硝化纤维层, 将流体中的气泡破坏, 避免了微 流道技术中气泡阻塞流道的状况发生, 使定量分析结果精确。 附图说明
图 1A, 为本发明第一实施例流体检测试片的示意图;
图 1B, 为本发明第一实施例流体检测试片剖面的示意图;
图 2A, 为本发明第二实施例流体检测试片的示意图;
图 2B, 为本发明第二实施例流体检测试片剖面的示意图。 主要组件符号说明
流体检测试片 1、 2
基板 10、 20
上表面 100、 200
流道 11、 21
第一流体区 111、 211
第二流体区 112、 212 第三流体区 113、 213
第四流体区 214
硝化纤维层 1121、 1131、 2121、 2131、 2141
硝化纤维层平均厚度 Da
硝化纤维层厚度 Db
第二流体区的宽度 Wa
第三流体区的宽度 Wb
支撑件 19、 29 具体实施方式
由于本发明是揭露一种流体检测试片, 其中所利用物理、 化学原理及溶液涂布技 术, 已为相关技术领域具有通常知识者所能明了, 故以下文中的说明, 不再作完整描 述。 同时, 以下文中所对照的附图, 是表达与本发明特征有关的示意, 并未亦不需要 依据实际情形完整绘制, 在此合先叙明。
如图 1A所示, 为本发明第一实施例的示意图。 流体检测试片 1包含有基板 10及 支撑件 19。基板 10自上表面 100向下凹设有流道 11, 流道 11包含有依序连接的第一 流体区 111、 第二流体区 112与第三流体区 113。 第一流体区 111是供流体的注入, 流 体在注入第一流体区 111后, 经由第二流体区 112的传送, 到达第三流体区 113, 流 体中的待测成份在此进行各项生化或免疫反应。 在较佳的实施状态中, 基板 1为生物 相容(biocompatible)材料。
请继续参考图 1B, 为图 1A沿 AA联机的剖面图。 在第二流体区 112与第三流体区 113的底部均形成有中空网状构型的硝化纤维层 1121与 1131, 又在硝化纤维层 1121 与 1131的中空网状构型中, 包含有反应材料, 反应材料的组成是与流体中所含有的待 测成份的种类有关。 此外, 由于硝化纤维层 1121与 1131是具有多孔性的中空网状结 构, 所以可以吸收由第一流体区 111流入的流体, 且流体中的待测成份与存在于硝化 纤维层 1131中的反应材料进行反应。由于硝化纤维层 1121与 1131是为可吸收液体的 材质, 故可避免流体残留于流道 11 中, 且由于流体流经中空网状构型的硝化纤维层 1121与 1131时, 流体中的气泡会被破坏, 故可避免气泡阻塞流道 11。
由于待测成份不同, 检测所需进行的反应亦有所差异; 进而依反应种类的不同, 产生出各种不同的讯号。 例如进行生化检测时, 是用酵素催化流体中的待测物质与冷 光化学试剂, 进而产生出特定波长的光讯号以供检测。 所以要进行生化检测, 反应材 料则会包含酵素及相对应的化学试剂。 另一方面, 若要检测检体中的某些蛋白质 (例 如: 胎儿蛋白, -fetoprotein ) 是否存在, 则是利用具有专一性的抗体, 与待测 蛋白质进行专一性结合,再利用其它化学试剂与已结合上待测蛋白质的抗体进行反应, 发出可供检测的讯号。 所以要进行免疫检测, 反应材料中则会包含有化学及抗体等免 疫试剂。 故, 本发明所提供的流体检测试片, 可用于各种生物检体 (如尿液、 血液等 流体) 中的各项待测成份的检测。
此外, 第二流体区 112的硝化纤维层 1121平均厚度 Da不大于第三流体区 113硝 化纤维层 1131的厚度 Db, 亦即 Da会小于或等于 Db, 本实施例中如图 IB所示, 硝化 纤维层 1121平均厚度 Da是小于第三流体区 113硝化纤维层 1131厚度 Db。 此外, 为 降低所需生物检体的体积, 第二流体区 112与第三流体区 113的宽度 Wa与 Wb较佳至 少为 0. 3ram。
在制作上, 硝化纤维层 1121与 1131的形成方式与反应材料形成于其中的方式如 下所述。 先将硝化纤维粉末 (nitrocellulose powder) 与含有酯类 (ester) 和酮类 (ketone )的有机溶剂混合后形成一硝化纤维溶液;再将硝化纤维溶液浇注(casting) 于第二流体区 112与第三流体区 113的底部, 经千燥后, 于第二流体区 112底部则会 形成硝化纤维层 1121, 而于第三流体区 113的底部则形成硝化纤维层 1131。为达较佳 的浇注效果, 流道 11的表面粗糙度 (Ra值) 以介于 3微米至 50微米之间为佳。
硝化纤维溶液干燥后形成具有中空网状构型的硝化纤维层, 为了调整较佳的中空 网状构型, 本发明的硝化纤维溶液中, 硝化纤维粉末与含有酯类和酮类的有机溶剂混 合的较佳体积比例为 1 : 9。 由于单位体积的硝化纤维吸收液体量是为定值, 故可由 欲吸收的待测流体的体积推算出对应的硝化纤维溶液的体积, 之后再行浇注。 如此可 以固定检测所需液体的体积量, 并适用于微量检测。
待硝化纤维层 1121与 1131分别干燥成形于第二流体区 112与第三流体区 113的 底部后, 将含有反应材料的反应溶液注入硝化纤维层 1121与 1131, 经过风干或是冷 冻干燥 ( lyophilization)后, 以粉末状的形式留存在硝化纤维层 1121与 1131之中。
上述硝化纤维层 1121、 1131与反应材料形成于其中的方式是以先形成硝化纤维层 之后再注入反应材料后的顺序形成方式, 另外, 亦可将含有反应材料的反应溶液, 加 入由硝化纤维粉末 (nitrocellulose powder) 与含有酯类 (ester ) 和酮类 (ketone) 的有机溶剂组成的硝化纤维溶液中;混合完毕之后,再将混合好的溶液浇注(casting) 于第二流体区 112与第三流体区 113的底部, 经过风干或冷冻干燥程序, 同时将硝化 纤维溶液形成硝化纤维层 1121 与 1131, 以及将反应材料形成粉末状留存在硝化纤维 层 1121与 1131之中。 上述的第一实施例是为具有三个流体区域的检测试片, 而根据本发明的精神, 尚 可在流道中加设一第四流体区, 以供?诸存流道中多余的流体。 以下将就本发明的第二 实施例具有四个流体区的检测试片进行描述。
请参考图 2A, 为本发明第二实施例的流体检测试片示意图。 流体检测试片 2的基 板 20自上表面 200向下凹设有流道 21 , 流道 21包含有依序连接的第一流体区 211、 第二流体区 212、第三流体 213区与第四流体区 214。第一流体区 211是供流体的注入, 流体在注入第一流体区 211后, 经由第二流体区 212的传送, 到达第三流体区 213, 流体中的待测成份在此进行生化或免疫反应。
请参考图 2B, 为图 2A沿 AA联机的剖面图, 第四流体区 214的底部与第二及第三 流体区 212、 213相同, 亦形成有硝化纤维层 2141, 且亦为中空网状构型, 以供多余 流体的贮存。又在硝化纤维层 2141的中空网状构型中,与第二及第三流体区 212、 213 底部的硝化纤维层 2121与 2131相同,亦包含有可与流体中待测成份反应的反应材料。
而第四流体区 214底部的硝化纤维层 2141, 在制作上, 与第二及第三流体区 212、 213底部的硝化纤维层 2121与 2131相同,均以硝化纤维溶液经浇注于第二流体区 212、 第三流体区 213与第四流体区 214的底部再经干燥后所形成;而硝化纤维层 2121、2131 与 2141中反应材料的形成方式, 亦可于硝化纤维层 2121、 2131与 2141干燥成形于第 二、 第三及第四流体区 212、 213、 214底部后, 再将含有反应材料的反应溶液注入, 经过风干或是冷冻干燥的方式,将反应材料干燥成粉末状留存于硝化纤维层 2121、2131 与 2141之中。或是将含有反应材料的反应溶液与硝化纤维溶液混合后, 一同浇注于第 二、 第三及第四流体区 212、 213、 214, 经风干或冷冻干燥后, 形成具有中空网状构 型的硝化纤维层 2121、 2131与 2141, 以及以粉末状留存于其中的反应材料。
此外, 本实施例中第一流体区、 第二流体区、 第三流体区的构造、 尺寸与相互连 接关系、 基板的较佳材料、 表面粗糙度、 试片的硝化纤维层的构型、 形成方式、 使用 的硝化纤维溶液的成份与较佳比例、 反应材料的组成, 均与第一实施例相同, 在此不 再重复赘述。
以上所述仅为本发明较佳实施例而已, 并非用以限定本发明申请专利权利; 同时 以上的描述对于熟的本技术领域的专门人士应可明了与实施, 因此其它未脱离本发明 所揭示的精神下所完成的等效改变或修饰,均应包含于本发明的权利要求保护范围内。

Claims

权 利 要 求
I、一种流体检测试片,主要包含一基板,该基板自其上表面向下凹设至少一流道, 该流道包含依序连接的第一流体区、 第二流体区与第三流体区, 该第一流体区是供流 体的注入, 其特征在于:
一硝化纤维层, 形成于该第二流体区与第三流体区的底部, 该硝化纤维层包含有 中空网状构型, 其中该第二流体区是供流体的传送, 该第三流体区是供流体的反应, 且该第二流体区的硝化纤维层平均厚度不大于该第三流体区硝化纤维层厚度; 以及 一反应材料, 形成于该硝化纤维层的中空网状构型中。
2、 如权利要求 1所述的流体检测试片, 其特征在于: 所述第二流体区的硝化纤维 层平均厚度小于该第三流体区硝化纤维层厚度。
3、 如权利要求 2所述的流体检测试片, 其特征在于: 所述硝化纤维层是以硝化纤 维溶液经浇注于第二流体区与第三流体区的底部再经干燥后所形成。
4、 如权利要求 3所述的流体检测试片, 其特征在于: 所述硝化纤维溶液是以硝化 纤维粉末混合酯类及酮类溶剂所形成。
5、 如权利要求 4所述的流体检测试片, 其特征在于: 所述硝化纤维粉末与酯类及 酮类溶剂所混合的体积比例为 1 : 9。
6、 如权利要求 1所述的流体检测试片, 其特征在于: 所述第二流体区与第三流体 区的最小宽度为 0. 3 mm。
7、 如权利要求 1所述的流体检测试片, 其特征在于: 所述基板为生物兼容材料。
8、 如权利要求 1所述的流体检测试片, 其特征在于: 所述流道的表面粗糙度 Ra 为 3微米至 50微米之间。
9、 如权利要求 1所述的流体检测试片, 其特征在于: 所述反应材料是以一反应溶 液注入该硝化纤维层, 再经干燥过程后形成粉末状。
10、 如权利要求 9所述的流体检测试片, 其特征在于: 所述干燥过程为冷冻干燥。
I I、 如权利要求 9所述的流体检测试片, 其特征在于: 所述干燥过程为风干。
12、 如权利要求 1所述的流体检测试片, 其特征在于: 所述反应材料是以一反应 溶液注入该硝化纤维溶液, 再经干燥过程同时将硝化纤维溶液形成硝化纤维层、 将该 反应材料形成粉末状。
13、如权利要求 12所述的流体检测试片,其特征在于:所述干燥过程为冷冻干燥。
14、 如权利要求 12所述的流体检测试片, 其特征在于: 所述干燥过程为风干。
15、 如权利要求 1所述的流体检测试片, 其特征在于: 所述反应材料为化学及酵 素试剂。
16、 如权利要求 1所述的流体检测试片, 其特征在于: 所述反应材料为抗体及化 学试剂。
—17、 如权利要求 1所述的流体检测试片, 其特征在于: 所述第二流体区的硝化纤 ― 维层平均厚度等于该第三流体区硝化纤维层厚度。
18、 如权利要求 1所述的流体检测试片, 其特征在于: 所述流道进一步包括第四 流体区, 该第四流体区的底部亦形成有硝化纤维层, 该硝化纤维层包含有中空网状构 型, 供多余流体的贮存。
19、 如权利要求 18所述的的流体检测试片, 其特征在于: 所述硝化纤维层是以硝 化纤维溶液经浇注于第二流体区、第三流体区与第四流体区的底部再经干燥后所形成。
20、 如权利要求 19所述的流体检测试片, 其特征在于: 所述硝化纤维溶液是以硝 化纤维粉末混合酯类及酮类溶剂所形成。
21、 如权利要求 20所述的流体检测试片, 其特征在于: 所述硝化纤维粉末与酯类 及酮类溶剂所混合的体积比例为 1 : 9
22、 如权利要求 18所述的流体检测试片, 其特征在于: 所述第二流体区、 第三流 体区与第四流体区的最小宽度为 0. 3
23、 如权利要求 1或 18所述的流体检测试片, 其特征在于: 所述基板为生物兼容 材料。
24、 如权利要求 18所述的流体检测试片, 其特征在于: 所述流道的表面粗糙度为 3微米至 50微米之间。
25、 如权利要求 1或 18所述的流体检测试片, 其特征在于: 所述反应材料是以一 反应溶液注入该硝化纤维层, 再经干燥过程后形成粉末状。
26、如权利要求 25所述的流体检测试片,其特征在于:所述干燥过程为冷冻干燥。
27、 如权利要求 25所述的流体检测试片, 其特征在于: 所述干燥过程为风干。
28、 如权利要求 1或 19所述的流体检测试片, 其特征在于: 所述反应材料是以一 反应溶液注入该硝化纤维溶液, 再经干燥过程同时将硝化纤维溶液形成硝化纤维层、 将该反应材料形成粉末状。
29、如权利要求 28所述的流体检测试片,其特征在于:所述干燥过程为冷冻干燥。
30、 如权利要求 28所述的流体检测试片, 其特征在于: 所述干燥过程为风干。
31、 如权利要求 1或 18所述的流体检测试片, 其特征在于: 所述反应材料为化学 及酵素试剂。
32、 如权利要求 1或 18所述的流体检测试片, 其特征在于: 所述反应材料为抗体 及化学试剂。
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