US20130004940A1 - Device for Detecting Analyte in Sample - Google Patents
Device for Detecting Analyte in Sample Download PDFInfo
- Publication number
- US20130004940A1 US20130004940A1 US13/511,086 US201013511086A US2013004940A1 US 20130004940 A1 US20130004940 A1 US 20130004940A1 US 201013511086 A US201013511086 A US 201013511086A US 2013004940 A1 US2013004940 A1 US 2013004940A1
- Authority
- US
- United States
- Prior art keywords
- lid
- elastic element
- detecting
- collecting chamber
- opening
- Prior art date
- Legal status (The legal status 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 status listed.)
- Abandoned
Links
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Images
Classifications
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- Y10T436/00—Chemistry: analytical and immunological testing
- Y10T436/14—Heterocyclic carbon compound [i.e., O, S, N, Se, Te, as only ring hetero atom]
- Y10T436/145555—Hetero-N
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T436/00—Chemistry: analytical and immunological testing
- Y10T436/14—Heterocyclic carbon compound [i.e., O, S, N, Se, Te, as only ring hetero atom]
- Y10T436/145555—Hetero-N
- Y10T436/146666—Bile pigment
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T436/00—Chemistry: analytical and immunological testing
- Y10T436/14—Heterocyclic carbon compound [i.e., O, S, N, Se, Te, as only ring hetero atom]
- Y10T436/145555—Hetero-N
- Y10T436/147777—Plural nitrogen in the same ring [e.g., barbituates, creatinine, etc.]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T436/00—Chemistry: analytical and immunological testing
- Y10T436/17—Nitrogen containing
- Y10T436/173076—Nitrite or nitrate
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T436/00—Chemistry: analytical and immunological testing
- Y10T436/17—Nitrogen containing
- Y10T436/173845—Amine and quaternary ammonium
Definitions
- the present invention relates to a device for detecting whether or not an analyte exists in a liquid sample.
- the detecting device for collecting liquid sample such as urine, and determining whether or not special analyte (e.g. drugs and/or metabolites thereof, or markers associated with diseases) exists therein has become a very common method.
- analyte e.g. drugs and/or metabolites thereof, or markers associated with diseases
- Such a device generally requires the sample being collected in the sample container, skilled artisans then need to insert a test strip into the sample by submerging a portion of the test strip, subsequently fetch out the test strip to read the result. During this process, those skilled one may directly contact the sample and therefore endanger their health or render the samples contaminated. In order to avoid this risk, a closed lid is required on the sample-collecting container for operation. At present, there are a lot of closed devices, such as the devices disclosed in U.S. Pat. Nos.
- detecting devices have been adopted more and more often by ordinary families or non-professional institutions. Since these detecting devices are designed specially for non-professional persons, their operation processes should be simple and yet they should ensure accuracy of the detecting results.
- the detecting devices which can be operated easily and yet still have accurate and authentic detecting results, are required at present.
- the object of the present invention is to provide such detecting devices that accord with the above requirements.
- the present invention provides a detecting device which can be operated easily.
- the present invention provides a urine detecting cup which can be operated easily. After the lid of the urine cup is covered onto the opening of the cup, the urine detecting cup further comprises an indication device, which indicates whether or not the lid approaches to and closes at an appointed position.
- the degrees of tightness for the lid covering onto the opening of the cup are different for different operators, which may result in that some lids do not completely seal the opening of the cup and these urine detecting cups thus have the possibility of liquid leaking.
- the present invention provides an indication device on the detecting device, when the lid covers at the appointed position on the collecting chamber (this position is deemed as where the lid totally seals the opening of the collecting chamber), the indication device indicates that the lid has sealed the opening of the collecting chamber and the operator is no longer required to cover the lid. By this way, the openings of devices are all sealed without liquid leaking risk.
- the lid covers the opening of the collecting chamber, the liquid sample in the collecting chamber starts to contact with the detecting element for detecting. At this time, traditional urine detecting cups need to count the time and read the detecting result displayed on the detecting area of the detecting element after a certain time.
- the present invention provides a detecting device, when the lid approaches to and closes at the appointed position on the collecting chamber, the indication device sends an indication signal, for example, a sound, to notify the operator to start counting the time to be waited for reading the detecting result displayed on the detecting element.
- the present invention provides a device for detecting whether or not an analyte exists in the sample, comprising: a collecting chamber containing an opening for collecting liquid sample; a detecting element for detecting the analyte in the liquid sample; and a lid for covering the opening of the collecting chamber, wherein the device further comprises an indication device thereon for indicating whether or not the lid covers at the appointed position.
- the indicating device when the lid covers at the appointed position, indicates that the lid has sealed the opening of the collecting chamber; or, when the lid covers at the appointed position, the indicating device indicates starting to count the time to be waited for reading the detecting result displayed on the detecting element.
- the indicating device indicates by making a sound.
- the indicating device contains some elements, which collide with each other after undergoing elastic deformation and rebound to make a sound.
- the indicating device contains two elements, after contacting with each other, the two elements or one of the two elements undergoes elastic deformation and then rebound so as to collide with the other one to make a sound.
- the indicating device contains an elastic element and a non-elastic element, when the elastic element passes by the non-elastic element, the elastic element is pressed by the non-elastic element to undergo the elastic deformation, when the pressing force disappears, the elastic element rebounds to make a sound.
- the elastic modulus of the elastic element is generally smaller than that of the non-elastic element.
- the plastic is used as the elastic element, and the metal such as iron, steel, or plumbum is used as the material for the non-elastic element.
- the elastic element is relatively easier to be changed in shape since its elastic modulus is smaller than that of non-elastic element; consequently, when the received force suddenly disappears, the elastic element needs to spring back to the original shape so as to knock or oscillate to make a sound.
- the force received by the elements that are elastically deformed needs to be smaller than the fixed intrinsic elastic limits of said elements. By this way, they can automatically return to their original shapes or status when the outside force disappears.
- both the elastic element and non-elastic element are made of plastic materials.
- the non-elastic element may be placed on the outer surface of the lid edge; the elastic element may also be placed on the surface of the outer wall of the cup opening.
- the non-elastic element may protrude from the outer wall, containing a gradually heightened sliding surface, in the process where the lid rotates relative to the cup to seal the opening, the elastic element slides gradually from a low position to a high position of the sliding surface. Consequently, when the elastic element passes by the protruding non-elastic element, the elastic element is forced by the protruding element to deform and then rebound to knock the lid.
- the non-elastic element is placed on a substrate sheet which can be elastically deformed.
- the substrate sheet is easy to be elastically deformed.
- both ends of the substrate sheet connect the lid edge, and the width of one end connecting the lid edge is larger than that of the other end connecting the lid edge.
- the elastic element and collecting chamber can move synchronously in a counter-clockwise direction relative to the lid, and the non-elastic element and lid can move synchronously in a clockwise direction relative to the collecting chamber.
- the substrate sheet can be rectangle, with a rectangle gap lying along the long side, separating the sheet from the lid edge.
- the elastic element interacts with the non-elastic element on the substrate sheet, the elastic element and the substrate sheet are elastically deformed synchronously; when the interaction force disappears, the elastic element and the substrate sheet collide with each other to make a sound.
- the non-elastic element is made of acrylonitrile-butadiene-styrene copolymer material
- the elastic element is made of polypropylene material.
- the elastic element passes by the non-elastic element and knocks the lid, and then the elastic element is prevented by the non-elastic element from moving clockwisely relative to the lid.
- the elastic element passes by the non-elastic element and knocks the lid, and then the elastic element can still move clockwisely relative to the lid.
- the way that the lid covers the opening of the collecting chamber is through rotating the lid around the chamber opening to seal the opening; the opening contains an external screw thread, and the lid contains an internal screw thread, the two screw threads match with each other.
- the elastic element can be placed on the lid; the non-elastic element can be placed on the collecting chamber. In a preferred embodiment, the elastic element is placed on the surface of the outer wall of the lid and the non-elastic element is placed on the surface of the outer wall of the collecting chamber.
- the present invention provides a method for detecting an analyte in a sample, comprising, providing a detecting device, which comprises a collecting chamber containing an opening for collecting liquid sample, a detecting element for detecting an analyte in the liquid sample, and a lid for covering the opening of the collecting chamber; covering the lid onto the opening of the collecting chamber so that an indicating device on the detecting device will indicate whether or not the lid covers at the appointed position.
- the indicating device indicates by making a sound.
- the lid is stopped from further movement to seal the opening of the collecting chamber.
- the lid seals the opening of the collecting chamber by means of rotation; once the indication is received from the indicating device, the lid is stopped from rotating.
- the time to be waited for reading the detecting result displayed on the detecting element starts to be counted.
- the time to be waited for reading the detecting result displayed on the detecting element starts to be counted, and at the same time, the lid is stopped from rotating.
- the present invention provides a method for detecting an analyte in the sample, comprising: providing a detecting device containing a collecting chamber with an opening; a detecting element; and a lid rotating relative to the collecting chamber to seal the opening, wherein the device further comprises an indicating device for indicating whether or not the lid rotates to an appointed position; rotating the lid until the indicating device makes a sound.
- the indicating device when the indicating device sends an indication, the rotation is stopped.
- the time to be waited for reading the detecting result displayed on the detecting element starts to be counted.
- the indicating device indicates by making a sound. More preferably, the indicating device contains an elastic element protruding from the outer surface of the collecting chamber and a non-elastic element protruding from the outer surface of the lid edge. During the process of rotating the lid, the elastic element is pressed by the non-elastic element to undergo deformation and then rebound to knock the lid edge to make a sound.
- the non-elastic element comprises a gradually heightened sliding surface, so that the elastic element slides gradually from a low position to a high position on the sliding surface, and then suddenly moves from the high position to the lid edge and knocks the lid edge to make a sound.
- the device and method of the present invention render operation of the detecting device easier, which are more suitable for non-professionals; further, the detecting result provided therein is more accurate.
- FIG. 1 is a sketch diagram of stereo structure of the lid in a specific embodiment of the present invention, a part of structure of the indicating device is positioned on the outer surface of the edge of the lid.
- FIG. 2 is an enlarged sketch diagram of a part of the indicating device on the lid edge in a specific embodiment of the present invention.
- FIG. 3 is a sketch diagram of stereo structure of the collecting chamber in a specific embodiment of the present invention, a part of the indicating device is positioned on the outer surface of the collecting chamber, close to the opening of the cup.
- FIG. 4 is an enlarged sketch diagram of the stereo structure of the part of the indicating device positioned on the outer surface of the collecting chamber in a specific embodiment of the present invention.
- FIG. 5 is a sketch diagram of stereo structure of the detecting device in a specific embodiment of the present invention.
- FIG. 6 is a sketch diagram of the operation principle of the indicating device illustrating how the indicating device indicates by making a sound in a specific embodiment of the present invention.
- FIG. 7 is a sketch diagram illustrating how the indicating device structure is involved in the process of making a sound for indication in a specific embodiment of the present invention.
- FIG. 8 is a sketch diagram illustrating how the indicating device structure is involved in the process of opening the lid for the result confirmation after the indication in a specific embodiment of the present invention.
- FIG. 9 is an enlarged sketch diagram of the structures of a part of the indicating device in a specific embodiment of the present invention.
- Lid 10 Lid 10 ; collecting chamber 202 ; cup 20 ; opening of the collecting chamber 201 , side wall of the collecting chamber 210 ; detecting chamber 207 , bottom of the collecting chamber 206 ; elastic element 204 ; periphery edge 203 ; outside surface 208 ; inside surface 209 ; detecting device 100 ; indicating device 30 ; non-elastic element 103 ; lid edge 101 ; outer surface of the lid edge 102 ; sliding surface 107 ; substrate sheet 104 ; basal end of the substrate sheet 109 ; top end of the substrate sheet 111 ; top long side of the substrate sheet 114 ; bottom long side of the substrate sheet 113 ; connection portion 112 ; gap 105 ; gap 106 ; basal connection portion of the substrate sheet 115 ; slope of the non-elastic element 22 ; slope of the elastic element 40 ;
- Detecting means assaying or testing whether or not a substance or material exists, for example, but not limited to, chemical substances, organic compounds, inorganic compounds, metabolic products, drugs or drug metabolites, organic tissues or metabolites of the organic tissues, nucleic acids, proteins or polymers. Detecting also means to determine the quantities of the substances or materials. Furthermore, detecting also includes assays, including immune assays, chemical assays and enzyme assays and the like.
- the detecting device comprises a collecting chamber 202 for collecting and storing liquid sample, the collecting chamber being formed by a side wall 210 and a bottom 206 , and an opening 201 for accepting the liquid sample.
- the word “a” used herein, including the Description, abstract and claims of the present application, should be understood as at least one, or the number involved therein containing one, and should not be only understood as “unique” or “only one”.
- the detecting device comprises an indicating device, obviously, the detecting device comprising two or more indicating devices also fall into the scope of protection of the present claims and should not be excluded therefrom.
- the detecting device further comprises a detecting chamber 207 containing a detecting element, the liquid sample in the collecting chamber may be freely or under controlled in contacting with the detecting element in the detecting chamber; the chemical reagent on the detecting element may detect whether or not the analyte exists in the liquid sample or the quantities of the analyte existing therein.
- the detecting device further includes a lid 10 to cover the opening 201 of the collecting chamber.
- the detecting device contains an indicating device 30 for indicating whether or not the lid covers at the appointed position, in particular, whether or not the lid covers at the appointed position on the collecting chamber.
- the indicating device indicates that the lid has totally sealed the opening of the collecting chamber.
- the indicating device indicates to start counting the time to be waited for reading the detecting result displayed on the detecting element.
- the ways that the lid covers the collecting chamber are various, e.g. covering by matching of screw threads.
- the opening of the collecting chamber contains an external screw thread
- the lid contains an internal screw thread that matches the said external screw thread of the opening; when the lid is covered onto the collecting chamber, it seals the opening by rotation relative to the chamber.
- the lid can be inserted into the opening to seal the opening by taking the form of piston.
- the indicating device of the present invention can also be applied to other detecting devices, especially to those devices that contain a lid and use the lid to seal the opening of the collecting chamber.
- These similar devices have been disclosed and described, for example, in U.S. Pat. Nos. 7,270,959, 7,300,633, 7,560,272, 7,438,852, 4,976,923, 5,429,804, and 6,726,879, all of which are hereby incorporated by reference in their entirety, and the detecting devices disclosed in these references can be combined with the indicating device disclosed in the present invention as one of the specific embodiments of the present invention.
- the indicating device 30 may be positioned on the detecting device, the indicating device indicates by making a sound.
- a sound may be “pa,” “peng,” “dong,” “ding-ling,” “pi-pa,” or any other suitable sound.
- the lid rotates relative to collecting chamber to seal the opening, a part of the indicating device is positioned on the lid and the other part of the indicating device is positioned on the wall of the collecting chamber; when the lid rotates to seal the opening, the part of the indicating device positioned on the lid and the other part of the indicating device positioned on the collecting chamber undergo elastically deformation by interaction with each other, when the interaction force disappears, the elastically deformed parts collide with each other to make a sound.
- the indicating device can contain an elastic element and a non-elastic element.
- the urine detecting cup as shown in FIGS. 1-6 , contains a lid 10 and a collecting chamber 20 .
- the lid contains a lid edge 101 having an element 103 on its outer surface 102 , and this element can be substantive non-elastic element.
- the collecting chamber contains an element 204 on its outside wall close to the opening 201 of the cup, this element can be substantive elastic element; the elastic element 204 is upright in parallel with the outside wall 210 of the collecting chamber and is positioned at a certain distance from the outside wall; the elastic element has a certain thickness, may be 1-5 mm, with an outside surface 208 and an opposite inside surface 209 .
- the inside surface 209 is slightly in contact with the outside surface 102 of the lid edge.
- the elastic element 204 When the elastic element 204 is pushed by a force vertical to the inside surface 209 and away from the side wall of the collecting chamber, the elastic element bends or twists outward from the collecting chamber wall 210 ; if the force vertical to the inside surface suddenly disappears, the elastic element has to restore to the initial state under the action of its own stress, during the process of resuming from deformed state to the initial state, the inside surface 209 of the elastic element rapidly knocks the outer surface 102 of the lid edge and consequently make a sound.
- the protruding element 103 positioned on the lid can be made of substantive non-elastic material, directly protruding outward from the outer surface 102 of the lid edge 101 , the protruding element 103 is in the shape of a sliding slope and contains a sliding surface 107 .
- the sliding surface 107 gradually moves from a low position to a high position in the counter-clockwise direction, the sliding surface in low position extends from the outer surface of the lid edge, the end of the sliding surface in high position has a certain vertical distance d from the outer surface of the lid edge, e.g.
- the inside surface 209 of the elastic element on the opening starts approaching the outer surface of the lid edge, and at this time, it may slightly contact the outer surface as shown in FIG. 6A .
- the elastic element slides on the sliding surface 107 of the protruding element 103 and slides from the lowest position to the highest position along the sliding surface as shown in FIG. 6B ; at the same time, the elastic element bends in the direction away from the outer wall of the collecting chamber accompanying the sliding, and undergoes elastically deformation, as shown in FIG.
- it can indicate the operator to start counting the time to be waited for reading the detecting result displayed on the detecting element. Indicating the operator that the lid has rotated to the appointed position and that the time to be waited shall start to be counted can be progressed simultaneously or separately.
- the indication that the lid has reached to the appointed position can be given various meanings, e.g., making a sound can mean starting the next step, or starting the detection, or finishing the detection, or any other steps that may need to be indicated. All of these can be described in the instruction manual of the product, instructing the operator to understand the meaning of the indication.
- the elastic element and non-elastic element in the indicating device can be separately manufactured from the other parts of the detecting device, and then the elastic element can be fixed on the outer wall surface of the collecting chamber, especially the place close to the opening, and the non-elastic element can be fixed on the outer surface of the lid edge, both by means of adhesion.
- the collecting chamber and lid can be injection molded by a die in one step by using different materials, e.g., the lid is injection molded by using acrylonitrile-butadiene-styrene copolymer (ABS), and the collecting chamber is injection molded by using Polypropylene (PP) material.
- “Appointed position” can be pre-arranged, for example, when the lid rotates to seal the collecting chamber, it can be set as the fixed number of circles that the lid to be rotated from the initial contact position, e.g. 1-5 circles, when lid can be deemed to completely seal the opening of the collecting chamber.
- an inner screw thread is placed on the lid
- an external screw thread is placed on the collecting chamber
- both the inner screw thread and external screw thread are provided with interfaces for matching with each other, once they match with each other, the lid and the collecting chamber are effectively rotated and the lid moves from a high position to a low position
- an elastic seal ring is generally provided inside the lid, when the elastic seal ring is in contact with the opening of the cup, it is needed to further rotated 0.1-1 circles so that the seal ring is in tight contact with the opening of the cup, which means total sealing.
- the position of the elastic element on the collecting chamber can be easily determined by arranging the number of circles of the screw thread and the pitch of the screw thread so that after rotating the lid a certain circles, when the seal ring is just about to seal the opening, the elastic element interacts with the non-elastic element and makes a sound for effective indication, suggesting that the lid has effectively sealed the opening and no more rotation is needed.
- “Appointed position” in the present invention can refer to not only the position where the lid totally seals the collecting chamber but also the position where the detecting device starts the detection assay.
- the device can be set so that the detecting device starts the detection assay as long as the lid rotates to a certain position; thus, when the lid rotates to the appointed position, the indicating device makes a sound for indicating the beginning of the assay.
- the elastic element can also be positioned on the lid and the non-elastic element positioned on the outside wall of the collecting chamber.
- the protruding element 103 is positioned on a substrate sheet 104 that can be elastically deformed, the substrate sheet may be a part of the lid edge 101 , as shown between the broken lines in FIG. 2 , and can be substantially a rectangle.
- the long side 114 of the substrate sheet is not connected with the lid edge, a rectangle gap 106 may be formed between the long side 114 of the substrate sheet and the lid edge, and the length of the gap is substantially equivalent to the length of the substrate sheet, or slightly less than the length of the substrate sheet.
- Such arrangement will impart better elasticity to the substrate sheet so that it can be easily deformed under the interaction force; moreover, the elastic element can knock the top end of the substrate sheet to make a much more clear and clangorous sound.
- the elastic element 204 on the collecting chamber presses down the non-elastic element 107 on the lid edge, since the substrate sheet has certain elasticity, it also undergoes elastic deformation under the interaction of the force.
- the protruded elastic element 204 knocks the top end 111 of the substrate sheet, the substrate sheet and the elastic element collide with each other, since the substrate sheet may decrease the influence of the lid on the vibration, this may result in a much more clear and clangorous sound.
- the basal end 109 of the substrate sheet is connected with the lid edge, and the top end 110 of the substrate sheet is connected with the lid edge via a connection 112 ; at the same time, the width of the connection 112 , through which the top end 110 connects with the lid edge, is smaller than the width of the connection part through which the basal end connects with the lid edge, so that a gap 105 is formed between the top end of the substrate sheet and the lid edge.
- the substrate sheet can be easily deformed elastically under the interaction between the elastic element 204 and the protruding element 103 so as to make a much more clear and clangorous sound.
- the lid and the collecting chamber can no longer moved relative to each other, but fixed at a position and in a locked state.
- the lid after the lid seals the opening, the lid cannot be rotated reversely to open the opening.
- the non-elastic element 104 prevents the elastic element from rotating reversely; for example, the lid 10 rotates clockwisely to seal the opening 201 , after the indicating device 30 makes an indication, since the non-elastic element has a surface vertical to the lid edge so that it stops the elastic element from moving backwards, the elastic element thus cannot be rotated counter-clockwisely, as shown in FIG. 7C or FIG. 6D . In this way, the lid and collecting chamber are in a locked state.
- “Locked state” in the present invention means that the lid and collecting chamber are fixed together as a whole, the lid cannot move relative to the opening of the collecting chamber, including both continuous rotation of the lid for sealing the opening of the collecting chamber and reversed rotation of the lid for opening the opening of the collecting chamber.
- the movements of the lid and collecting chamber can be reversed to open the opening of the collecting chamber. For example, when the operator rotates the lid to the appointed position, upon hearing a sound of “pa” made by the indicating device, he/she stops further rotating the lid, this sound indicates that the lid has been placed at the position for sealing the opening of the collecting chamber. At this time, other operations can be undertaken to detect the analyte in the sample.
- the operator can also start to count the time to be waited for reading the detecting result displayed on the detecting element, e.g., the operator starts reading the detecting result displayed on the detecting element after waiting for example 2-5 minutes.
- Reading means directly observing changes of the color or the shade of color on the detecting element by naked eyes to determine whether or not the analyte exists or the quantities of the analyte therein, or directly reading and automatically outputting the results by a machine. After finishing these operations, for example, if finishing the detection and finding that the detecting result is positive, the sample in the detective device is to be delivered to the professional institution, where the operator needs to rotate the lid reversely to open the collecting chamber and extract the sample for confirmation.
- the non-elastic element contains an slope 21 being in contact with an slope 40 on the elastic element, when the lid is reversely rotated, since the elastic element 204 has elasticity, its slope 40 receives a force from non-elastic element and consequently bends downwards, so that the lid can successfully rotate reversely to open the opening of the collecting chamber.
- the present invention provides a method for detecting analyte in the sample, comprising: providing a detecting device 100 , which comprises: a collecting chamber 202 including an opening 201 for collecting liquid sample, a detecting element for detecting analyte in the liquid sample, and a lid 10 for covering the opening of the collecting chamber; when the lid is covered onto the opening of the collecting chamber, an indicating device 30 on the detecting device indicates whether or not the lid has covered at the appointed position.
- the indicating device makes a sound to indicate.
- the lid is stopped from being moving further onto the opening of the collecting chamber.
- the lid seals the opening of the collecting chamber by means of rotating, once the indicating device sends an indication, the lid is stopped from being further rotated. Moreover, in another specific embodiment, once the indicating device sends an indication, the time to be waited for reading the detecting result displayed on the detecting element starts to be counted. In yet another specific embodiment, once the indicating device sends an indication, the time to be waited for reading the detecting result displayed on the detecting element starts to be counted calculated and, at the same time, the lid is stopped from being further rotated.
- the detecting element can be lateral flowing detection test strip, which can detect various analytes. Certainly, other suitable detecting elements can also be applied to the present invention.
- test strips used for analyzing an analyte (e.g., drugs or body metabolites) in a sample have various kinds, such as the kind for immunoassay or chemical assay.
- the test strip can adopt the analysis mode of noncompetitive method or competitive method.
- a typical test strip can contain a water-absorbing sample-adding area, a reagent area, and a test area.
- the typical analysis mode of noncompetitive method is: if the sample contains the analyte, the signal is generated, if the sample does not contain the analyte, the signal will not be generated, whereas in competitive method, if the analyte does not exist in the sample, the signal is generated, if the analyte exists in the sample, the signal will not be generated.
- the detecting element can be the test strip that is made from absorbent or nonabsorbent materials.
- the test strip may contain several materials for delivering the liquid sample; one material may cover onto the other material, e.g., the filter paper may cover onto the nitrocellulose membrane.
- One area of the test paper may contain one or more materials, whereas another area may contains one or more different materials.
- the test paper can be adhered to a certain support or hard surface for enhancing the strength of the test paper for handling.
- the analyte is detected via a signal-generating system.
- a signal-generating system For example, one or more enzymes specifically react with the analyte; thus, they could be used to make the signal-generating systems that are fixed on the test area of the test strip by using the above described methods.
- the substances that can generate signals may be on the sample-adding area, reagent area, test area, or the entire test strip, and these substances may fill in one or more materials used in the test strip. Adding the solution containing signal substances onto the surface of the test strip or immerging one or more materials of the test strip into the solution containing signal substances, then drying the test strip with the solution containing signal substances.
- the areas of the test strip can be arranged in the following way: sample-adding area, reagent area, test area, control area, an area determining whether or not the sample is adulterated, and finally a sample absorbing area; the control area is positioned behind the test area. All of the above areas can be arranged on one test strip made of only one material, or different areas can adopt different materials. Each area can contact with the liquid sample directly, or different areas can be arranged according to the flowing direction of the liquid sample, with each area being connected to and overlapped with the other area.
- the materials used in the test strip may be those having good water absorption capability, such as filter paper, glass fiber or nitrocellulose membrane and the like.
- the test strip may adopt other forms, too.
- samples can be applied to the device of the present invention for test, comprising body fluid (e.g. urine and other body fluids and clinical samples).
- the liquid samples may be samples from solid or semi-solid samples, comprising dungs, biological tissues and food samples. These solid or semi-solid samples can be converted into liquid samples by any suitable methods, for example, the solid samples (e.g. water, phosphate buffer or other buffers) are mixed, macerated, incubated, dissolved or subjected to enzymatic hydrolysis in a suitable liquid.
- the “biological samples” contains samples from living animals, plants and food, also contains urine, saliva, blood and blood ingredients, cerebrospinal fluid, vaginal swab, seminal fluid, sweat, secretion, tissue, organ, tumor, culture of tissues and organs, cell culture and medium therein, regardless whether they are from human beings or animals.
- the food samples contain processed food ingredients and final products, such as meat, cheese, alcohol, milk and drinking water.
- the plant samples contains samples from any plants, plant tissues, plant cell cultures and mediums therein.
- “Environmental samples” contains samples from environment (e.g. sample of lake water or samples of other water, sewage sample, soil sample, groundwater sample, sea water sample and samples of rubbish and waste water). The sewage and relevant rubbish can also be contained in the environmental samples.
- the present invention can be used for analyzing any analyte.
- the analyte that can be detected stably by the present invention comprise (but not limited to) human chorionic gonadotrophin (hCG), luteinizing hormone (LH), follicle-stimulating hormone (FSH), hepatitis C virus (HCV), hepatitis B virus (HBV), Hepatitis B virus surface antigen, AIDS virus and any drugs of abuse.
- hCG human chorionic gonadotrophin
- LH luteinizing hormone
- FSH follicle-stimulating hormone
- HCV hepatitis C virus
- HBV hepatitis B virus
- Hepatitis B virus surface antigen AIDS virus and any drugs of abuse.
- the analyte can be detected in any liquid or liquefied samples, for example, urine, saliva, slobber, blood, plasma or serum.
- analytes also include, creatinine, bilirubin, nitrite, (non-specific) proteins, blood, leucocyte, blood glucose, heavy metals and toxins, bacterial components (e.g. special proteins and saccharides of the bacterium of particular type, e.g., E. coli 0157:H7, Staphyloccocus aureus, Salmonella, Clostridium perfingens, Campylobacter, Listeria monocytogenes, Vibrio parahaemolyticus , or Bacillus cereus ). Any other analytes suitable for side-stream test can be detected by this device.
- the analyte can be infectious substances or the substance that can indicate the infection period.
- the analyte can be drugs (e.g. drugs of abuse), hormones, proteins, nucleic acid molecules, pathogens.
- drugs e.g. drugs of abuse
- DOA drug of Abuse
- drugs typically for paralyzing nerves
- Abuse of these drugs will cause the damage to the body and nerves so as to generate dependency, addiction and/or death.
- drugs of abuse include ***e, amphetamine (such as Black Beauty, white amphetamine tablets, dexamphetamine, dextro-amphetamine tablets, Beans); methyl amphetamine (crank, methamphetamine, crystal, speed); barbiturate (such as Valium®, Roche pharmaceuticals, Nutley, N.J.); sedative (drugs for assisting sleeping); lysergic acid diethylamide (LSD); depressants (downers, goofballs, barbs, blue devils, yellow jackets, methaqualone); tricyclic antidepressants (TCA, i.e., imipramine, amitriptyline and doxepin); phencyclidine (PCP), tetrahydrocannabinol (THC, pot, dope, hash, weed, and etc.); opiates (i.e., morphia, opium, codeine, heroin, dihydrohydroxycodeinone).
- This test strip can
- the cup 20 which has the elastic element 204 on the collecting chamber 202 , is injection molded by a die in one step, and is made of polypropylene material, wherein the collecting chamber is used for collecting the liquid sample, the detecting chamber 27 is connected to the collecting chamber at bottoms, an external screw thread is provided close to the opening of the cup, a ring of protruding periphery edge 203 is provided under the lower end of the screw thread, an elastic element 204 is provided on the edge of the protruding periphery edge 203 (having a width of 4 mm), the top end of this elastic element has a distance of about 4.5 mm from the periphery edge plane 232 , the thickness of the elastic element is about 2 mm.
- lid 10 , non-elastic element 103 and substrate sheet 104 are all made of acrylonitrile-butadiene-styrene copolymer, and are injection molded in one step;
- the substrate sheet has a length of 15 mm and a width of 5 mm, a gap 106 having a width of 3 mm and a length of 13 mm is formed along the longitudinal direction of the substrate sheet, separating the substrate sheet from the lid edge 102 , the top end 111 of the substrate sheet is connected with the lid edge via a connection having a width of 2 mm, the remaining portion is again a gap 105 having a length of 3 mm.
- the non-elastic element 103 on the substrate sheet is of a sliding platform shape, the highest point of the sliding surface has a distance of 1.5 mm from the surface of the substrate sheet.
- the thickness of the lid edge is about 2 mm.
- An inner screw thread matched the external screw thread of the opening of the collecting chamber is provided on the lid edge.
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Abstract
Description
- The present invention relates to a device for detecting whether or not an analyte exists in a liquid sample.
- In the field of medical care, detecting body fluid is a prevailing behavior. Factories, government institutions, sports teams and other organizations have more and more often employed diagnostic testing for ensuring safety of working environments and compliance of laws and regulations.
- The use of the detecting device for collecting liquid sample such as urine, and determining whether or not special analyte (e.g. drugs and/or metabolites thereof, or markers associated with diseases) exists therein has become a very common method. Such a device generally requires the sample being collected in the sample container, skilled artisans then need to insert a test strip into the sample by submerging a portion of the test strip, subsequently fetch out the test strip to read the result. During this process, those skilled one may directly contact the sample and therefore endanger their health or render the samples contaminated. In order to avoid this risk, a closed lid is required on the sample-collecting container for operation. At present, there are a lot of closed devices, such as the devices disclosed in U.S. Pat. Nos. 4,976,923, 5,429,804 and 6,726,879. These devices include fixing the test strip on the lid of the detecting device, when being used, the container is overturned or tilted to dip the test strip into the sample for detecting. The US Patent Application No. 2003/0027359A1, published on Feb. 6, 2003, discloses a urine detecting cup, which still needs a push-rod to push a column piston to move after the lid covers the opening of the cup, so that the liquid sample flows out from the chamber and contacts the detecting element. The Chinese Patent Application No. 200510113977.5 discloses another urine detecting cup, which initiates the liquid flowing into the detecting chamber from a collecting chamber after the lid covers the opening of the cup so as to start the detecting. Another Chinese Patent Application No. 200480033286.8 also discloses a urine detecting cup, which also starts the detecting after the lid covers the opening of the cup.
- Recently, detecting devices have been adopted more and more often by ordinary families or non-professional institutions. Since these detecting devices are designed specially for non-professional persons, their operation processes should be simple and yet they should ensure accuracy of the detecting results.
- Accordingly, the detecting devices, which can be operated easily and yet still have accurate and authentic detecting results, are required at present. The object of the present invention is to provide such detecting devices that accord with the above requirements.
- The present invention provides a detecting device which can be operated easily. To be specific, the present invention provides a urine detecting cup which can be operated easily. After the lid of the urine cup is covered onto the opening of the cup, the urine detecting cup further comprises an indication device, which indicates whether or not the lid approaches to and closes at an appointed position. On the one hand, when different operators cover the lid onto the opening of the cup, especially non-professional persons, the degrees of tightness for the lid covering onto the opening of the cup are different for different operators, which may result in that some lids do not completely seal the opening of the cup and these urine detecting cups thus have the possibility of liquid leaking. The present invention provides an indication device on the detecting device, when the lid covers at the appointed position on the collecting chamber (this position is deemed as where the lid totally seals the opening of the collecting chamber), the indication device indicates that the lid has sealed the opening of the collecting chamber and the operator is no longer required to cover the lid. By this way, the openings of devices are all sealed without liquid leaking risk. On the other hand, in some devices, once the lid covers the opening of the collecting chamber, the liquid sample in the collecting chamber starts to contact with the detecting element for detecting. At this time, traditional urine detecting cups need to count the time and read the detecting result displayed on the detecting area of the detecting element after a certain time. When different operators operate, there is no such a unified standard as to what specific time the counting of time should start; thus, for different operators, the same device may result in different detecting results. The present invention provides a detecting device, when the lid approaches to and closes at the appointed position on the collecting chamber, the indication device sends an indication signal, for example, a sound, to notify the operator to start counting the time to be waited for reading the detecting result displayed on the detecting element.
- In one aspect, the present invention provides a device for detecting whether or not an analyte exists in the sample, comprising: a collecting chamber containing an opening for collecting liquid sample; a detecting element for detecting the analyte in the liquid sample; and a lid for covering the opening of the collecting chamber, wherein the device further comprises an indication device thereon for indicating whether or not the lid covers at the appointed position.
- In some preferred embodiments, when the lid covers at the appointed position, the indicating device indicates that the lid has sealed the opening of the collecting chamber; or, when the lid covers at the appointed position, the indicating device indicates starting to count the time to be waited for reading the detecting result displayed on the detecting element.
- In other preferred embodiments, the indicating device indicates by making a sound. In some specific embodiments, the indicating device contains some elements, which collide with each other after undergoing elastic deformation and rebound to make a sound. To be specific, the indicating device contains two elements, after contacting with each other, the two elements or one of the two elements undergoes elastic deformation and then rebound so as to collide with the other one to make a sound. In one specific embodiment, the indicating device contains an elastic element and a non-elastic element, when the elastic element passes by the non-elastic element, the elastic element is pressed by the non-elastic element to undergo the elastic deformation, when the pressing force disappears, the elastic element rebounds to make a sound. The “elastic element” and “non-elastic element” described in the present invention are relative conceptions. In general, the elastic modulus of the elastic element is generally smaller than that of the non-elastic element. For example, the plastic is used as the elastic element, and the metal such as iron, steel, or plumbum is used as the material for the non-elastic element. By the interaction between the plastic and non-elastic element, which gives identical force to each other, the elastic element is relatively easier to be changed in shape since its elastic modulus is smaller than that of non-elastic element; consequently, when the received force suddenly disappears, the elastic element needs to spring back to the original shape so as to knock or oscillate to make a sound. In the present invention, the force received by the elements that are elastically deformed needs to be smaller than the fixed intrinsic elastic limits of said elements. By this way, they can automatically return to their original shapes or status when the outside force disappears. Optionally, both the elastic element and non-elastic element are made of plastic materials.
- More preferably, the non-elastic element may be placed on the outer surface of the lid edge; the elastic element may also be placed on the surface of the outer wall of the cup opening. In more specific embodiments, the non-elastic element may protrude from the outer wall, containing a gradually heightened sliding surface, in the process where the lid rotates relative to the cup to seal the opening, the elastic element slides gradually from a low position to a high position of the sliding surface. Consequently, when the elastic element passes by the protruding non-elastic element, the elastic element is forced by the protruding element to deform and then rebound to knock the lid.
- In other specific embodiments, the non-elastic element is placed on a substrate sheet which can be elastically deformed. There are various ways by which the substrate sheet is easy to be elastically deformed. In a specific embodiment, both ends of the substrate sheet connect the lid edge, and the width of one end connecting the lid edge is larger than that of the other end connecting the lid edge. Besides, the elastic element and collecting chamber can move synchronously in a counter-clockwise direction relative to the lid, and the non-elastic element and lid can move synchronously in a clockwise direction relative to the collecting chamber. In an optional embodiment, the substrate sheet can be rectangle, with a rectangle gap lying along the long side, separating the sheet from the lid edge. In another optional embodiment, the elastic element interacts with the non-elastic element on the substrate sheet, the elastic element and the substrate sheet are elastically deformed synchronously; when the interaction force disappears, the elastic element and the substrate sheet collide with each other to make a sound.
- In yet other specific embodiments, the non-elastic element is made of acrylonitrile-butadiene-styrene copolymer material, and the elastic element is made of polypropylene material. Optionally, the elastic element passes by the non-elastic element and knocks the lid, and then the elastic element is prevented by the non-elastic element from moving clockwisely relative to the lid. In another optional embodiment, the elastic element passes by the non-elastic element and knocks the lid, and then the elastic element can still move clockwisely relative to the lid. Optionally, the way that the lid covers the opening of the collecting chamber is through rotating the lid around the chamber opening to seal the opening; the opening contains an external screw thread, and the lid contains an internal screw thread, the two screw threads match with each other.
- In an optional embodiment, the elastic element can be placed on the lid; the non-elastic element can be placed on the collecting chamber. In a preferred embodiment, the elastic element is placed on the surface of the outer wall of the lid and the non-elastic element is placed on the surface of the outer wall of the collecting chamber.
- In another aspect, the present invention provides a method for detecting an analyte in a sample, comprising, providing a detecting device, which comprises a collecting chamber containing an opening for collecting liquid sample, a detecting element for detecting an analyte in the liquid sample, and a lid for covering the opening of the collecting chamber; covering the lid onto the opening of the collecting chamber so that an indicating device on the detecting device will indicate whether or not the lid covers at the appointed position. In an embodiment, the indicating device indicates by making a sound. In another embodiment, once the indication is received from the indicating device, the lid is stopped from further movement to seal the opening of the collecting chamber. In a specific embodiment, the lid seals the opening of the collecting chamber by means of rotation; once the indication is received from the indicating device, the lid is stopped from rotating. In addition, in another embodiment, once the indication is received from the indicating device, the time to be waited for reading the detecting result displayed on the detecting element starts to be counted. In yet another embodiment, once the indication is received from the indicating device, the time to be waited for reading the detecting result displayed on the detecting element starts to be counted, and at the same time, the lid is stopped from rotating.
- In other preferred embodiments, the present invention provides a method for detecting an analyte in the sample, comprising: providing a detecting device containing a collecting chamber with an opening; a detecting element; and a lid rotating relative to the collecting chamber to seal the opening, wherein the device further comprises an indicating device for indicating whether or not the lid rotates to an appointed position; rotating the lid until the indicating device makes a sound.
- In some preferred embodiments, when the indicating device sends an indication, the rotation is stopped. Optionally, when the indicating device sends an indication, the time to be waited for reading the detecting result displayed on the detecting element starts to be counted. In one specific embodiment, the indicating device indicates by making a sound. More preferably, the indicating device contains an elastic element protruding from the outer surface of the collecting chamber and a non-elastic element protruding from the outer surface of the lid edge. During the process of rotating the lid, the elastic element is pressed by the non-elastic element to undergo deformation and then rebound to knock the lid edge to make a sound. Most preferably, the non-elastic element comprises a gradually heightened sliding surface, so that the elastic element slides gradually from a low position to a high position on the sliding surface, and then suddenly moves from the high position to the lid edge and knocks the lid edge to make a sound.
- The device and method of the present invention render operation of the detecting device easier, which are more suitable for non-professionals; further, the detecting result provided therein is more accurate.
-
FIG. 1 is a sketch diagram of stereo structure of the lid in a specific embodiment of the present invention, a part of structure of the indicating device is positioned on the outer surface of the edge of the lid. -
FIG. 2 is an enlarged sketch diagram of a part of the indicating device on the lid edge in a specific embodiment of the present invention. -
FIG. 3 is a sketch diagram of stereo structure of the collecting chamber in a specific embodiment of the present invention, a part of the indicating device is positioned on the outer surface of the collecting chamber, close to the opening of the cup. -
FIG. 4 is an enlarged sketch diagram of the stereo structure of the part of the indicating device positioned on the outer surface of the collecting chamber in a specific embodiment of the present invention. -
FIG. 5 is a sketch diagram of stereo structure of the detecting device in a specific embodiment of the present invention. -
FIG. 6 is a sketch diagram of the operation principle of the indicating device illustrating how the indicating device indicates by making a sound in a specific embodiment of the present invention. -
FIG. 7 is a sketch diagram illustrating how the indicating device structure is involved in the process of making a sound for indication in a specific embodiment of the present invention. -
FIG. 8 is a sketch diagram illustrating how the indicating device structure is involved in the process of opening the lid for the result confirmation after the indication in a specific embodiment of the present invention. -
FIG. 9 is an enlarged sketch diagram of the structures of a part of the indicating device in a specific embodiment of the present invention. -
Lid 10; collectingchamber 202;cup 20; opening of the collectingchamber 201, side wall of the collectingchamber 210; detectingchamber 207, bottom of the collectingchamber 206;elastic element 204;periphery edge 203; outsidesurface 208; insidesurface 209; detectingdevice 100; indicatingdevice 30;non-elastic element 103;lid edge 101; outer surface of thelid edge 102; slidingsurface 107;substrate sheet 104; basal end of thesubstrate sheet 109; top end of thesubstrate sheet 111; top long side of thesubstrate sheet 114; bottom long side of thesubstrate sheet 113;connection portion 112;gap 105;gap 106; basal connection portion of thesubstrate sheet 115; slope of the non-elastic element 22; slope of theelastic element 40; - The structures or the used technical terms related in the present invention are further described below.
- Detecting
- Detecting means assaying or testing whether or not a substance or material exists, for example, but not limited to, chemical substances, organic compounds, inorganic compounds, metabolic products, drugs or drug metabolites, organic tissues or metabolites of the organic tissues, nucleic acids, proteins or polymers. Detecting also means to determine the quantities of the substances or materials. Furthermore, detecting also includes assays, including immune assays, chemical assays and enzyme assays and the like.
- Detecting Device
- In a specific example, the detecting device comprises a collecting
chamber 202 for collecting and storing liquid sample, the collecting chamber being formed by aside wall 210 and a bottom 206, and anopening 201 for accepting the liquid sample. The word “a” used herein, including the Description, abstract and claims of the present application, should be understood as at least one, or the number involved therein containing one, and should not be only understood as “unique” or “only one”. For example, the detecting device comprises an indicating device, obviously, the detecting device comprising two or more indicating devices also fall into the scope of protection of the present claims and should not be excluded therefrom. The detecting device further comprises a detectingchamber 207 containing a detecting element, the liquid sample in the collecting chamber may be freely or under controlled in contacting with the detecting element in the detecting chamber; the chemical reagent on the detecting element may detect whether or not the analyte exists in the liquid sample or the quantities of the analyte existing therein. The detecting device further includes alid 10 to cover theopening 201 of the collecting chamber. In a specific embodiment, the detecting device contains an indicatingdevice 30 for indicating whether or not the lid covers at the appointed position, in particular, whether or not the lid covers at the appointed position on the collecting chamber. On the one hand, when the lid covers at the appointed position on the collecting chamber, the indicating device indicates that the lid has totally sealed the opening of the collecting chamber. On the other hand, when the lid covers at the appointed position of the collecting chamber, the indicating device indicates to start counting the time to be waited for reading the detecting result displayed on the detecting element. The ways that the lid covers the collecting chamber are various, e.g. covering by matching of screw threads. For example, the opening of the collecting chamber contains an external screw thread, and the lid contains an internal screw thread that matches the said external screw thread of the opening; when the lid is covered onto the collecting chamber, it seals the opening by rotation relative to the chamber. In addition, the lid can be inserted into the opening to seal the opening by taking the form of piston. - The indicating device of the present invention can also be applied to other detecting devices, especially to those devices that contain a lid and use the lid to seal the opening of the collecting chamber. These similar devices have been disclosed and described, for example, in U.S. Pat. Nos. 7,270,959, 7,300,633, 7,560,272, 7,438,852, 4,976,923, 5,429,804, and 6,726,879, all of which are hereby incorporated by reference in their entirety, and the detecting devices disclosed in these references can be combined with the indicating device disclosed in the present invention as one of the specific embodiments of the present invention.
- Indicating Device
- In a specific embodiment, the indicating
device 30 may be positioned on the detecting device, the indicating device indicates by making a sound. Such a sound may be “pa,” “peng,” “dong,” “ding-ling,” “pi-pa,” or any other suitable sound. - In some embodiments, the lid rotates relative to collecting chamber to seal the opening, a part of the indicating device is positioned on the lid and the other part of the indicating device is positioned on the wall of the collecting chamber; when the lid rotates to seal the opening, the part of the indicating device positioned on the lid and the other part of the indicating device positioned on the collecting chamber undergo elastically deformation by interaction with each other, when the interaction force disappears, the elastically deformed parts collide with each other to make a sound. In particular, the indicating device can contain an elastic element and a non-elastic element. For example, the urine detecting cup as shown in
FIGS. 1-6 , contains alid 10 and a collectingchamber 20. The lid contains alid edge 101 having anelement 103 on itsouter surface 102, and this element can be substantive non-elastic element. At the same time, the collecting chamber contains anelement 204 on its outside wall close to theopening 201 of the cup, this element can be substantive elastic element; theelastic element 204 is upright in parallel with theoutside wall 210 of the collecting chamber and is positioned at a certain distance from the outside wall; the elastic element has a certain thickness, may be 1-5 mm, with anoutside surface 208 and an opposite insidesurface 209. When the lid is covered onto the opening, at first theinside surface 209 is slightly in contact with theoutside surface 102 of the lid edge. When theelastic element 204 is pushed by a force vertical to theinside surface 209 and away from the side wall of the collecting chamber, the elastic element bends or twists outward from the collectingchamber wall 210; if the force vertical to the inside surface suddenly disappears, the elastic element has to restore to the initial state under the action of its own stress, during the process of resuming from deformed state to the initial state, theinside surface 209 of the elastic element rapidly knocks theouter surface 102 of the lid edge and consequently make a sound. - In some more preferred embodiments, the protruding
element 103 positioned on the lid can be made of substantive non-elastic material, directly protruding outward from theouter surface 102 of thelid edge 101, the protrudingelement 103 is in the shape of a sliding slope and contains a slidingsurface 107. As shown inFIG. 2 , if the lid seals the opening by rotating clockwisely relative to the opening, the slidingsurface 107 gradually moves from a low position to a high position in the counter-clockwise direction, the sliding surface in low position extends from the outer surface of the lid edge, the end of the sliding surface in high position has a certain vertical distance d from the outer surface of the lid edge, e.g. a distance in the range from 1 mm to 10 mm. As shown inFIG. 6 , during the process of use, when the lid rotates clockwisely to seal the opening, when the lid almost reaches to the appointed position, theinside surface 209 of the elastic element on the opening starts approaching the outer surface of the lid edge, and at this time, it may slightly contact the outer surface as shown inFIG. 6A . Subsequently, the elastic element slides on the slidingsurface 107 of the protrudingelement 103 and slides from the lowest position to the highest position along the sliding surface as shown inFIG. 6B ; at the same time, the elastic element bends in the direction away from the outer wall of the collecting chamber accompanying the sliding, and undergoes elastically deformation, as shown inFIG. 6B by the upright arrow. When theinside surface 209 slides to the highest position of the protruding element, the elastic element reaches to a maximum bending, as shown inFIG. 6C . However, the force received by the elastic element does not go beyond its own elasticity limit; thus, accompanying with continuous rotation of the lid, theelastic element 204 rapidly slides out from the slidingsurface 107 and suddenly loses the support of the slidingsurface 107, therefore moving rapidly towards the lid edge under its own elastic property and knocking the lid edge to make a sound, as shown inFIG. 6D , indicating the operator that the lid has rotated to the appointed position, and the lid has sealed the opening of the collecting chamber, there is thus no need for rotation further more. Optionally, it can indicate the operator to start counting the time to be waited for reading the detecting result displayed on the detecting element. Indicating the operator that the lid has rotated to the appointed position and that the time to be waited shall start to be counted can be progressed simultaneously or separately. The indication that the lid has reached to the appointed position can be given various meanings, e.g., making a sound can mean starting the next step, or starting the detection, or finishing the detection, or any other steps that may need to be indicated. All of these can be described in the instruction manual of the product, instructing the operator to understand the meaning of the indication. Furthermore, the elastic element and non-elastic element in the indicating device can be separately manufactured from the other parts of the detecting device, and then the elastic element can be fixed on the outer wall surface of the collecting chamber, especially the place close to the opening, and the non-elastic element can be fixed on the outer surface of the lid edge, both by means of adhesion. Even more preferably, the collecting chamber and lid can be injection molded by a die in one step by using different materials, e.g., the lid is injection molded by using acrylonitrile-butadiene-styrene copolymer (ABS), and the collecting chamber is injection molded by using Polypropylene (PP) material. - “Appointed position” can be pre-arranged, for example, when the lid rotates to seal the collecting chamber, it can be set as the fixed number of circles that the lid to be rotated from the initial contact position, e.g. 1-5 circles, when lid can be deemed to completely seal the opening of the collecting chamber. Specifically, an inner screw thread is placed on the lid, an external screw thread is placed on the collecting chamber, both the inner screw thread and external screw thread are provided with interfaces for matching with each other, once they match with each other, the lid and the collecting chamber are effectively rotated and the lid moves from a high position to a low position; an elastic seal ring is generally provided inside the lid, when the elastic seal ring is in contact with the opening of the cup, it is needed to further rotated 0.1-1 circles so that the seal ring is in tight contact with the opening of the cup, which means total sealing. When the position of the inner screw thread and the non-elastic element is fixed on the lid, the position of the elastic element on the collecting chamber can be easily determined by arranging the number of circles of the screw thread and the pitch of the screw thread so that after rotating the lid a certain circles, when the seal ring is just about to seal the opening, the elastic element interacts with the non-elastic element and makes a sound for effective indication, suggesting that the lid has effectively sealed the opening and no more rotation is needed. Aside from the aforementioned way, there are other optional ways that can be used for arranging the appointed position. “Appointed position” in the present invention can refer to not only the position where the lid totally seals the collecting chamber but also the position where the detecting device starts the detection assay. For example, the device can be set so that the detecting device starts the detection assay as long as the lid rotates to a certain position; thus, when the lid rotates to the appointed position, the indicating device makes a sound for indicating the beginning of the assay. Optionally, in other ways, the elastic element can also be positioned on the lid and the non-elastic element positioned on the outside wall of the collecting chamber.
- In some more preferable embodiments, the protruding
element 103 is positioned on asubstrate sheet 104 that can be elastically deformed, the substrate sheet may be a part of thelid edge 101, as shown between the broken lines inFIG. 2 , and can be substantially a rectangle. In a preferable embodiment, thelong side 114 of the substrate sheet is not connected with the lid edge, arectangle gap 106 may be formed between thelong side 114 of the substrate sheet and the lid edge, and the length of the gap is substantially equivalent to the length of the substrate sheet, or slightly less than the length of the substrate sheet. Such arrangement will impart better elasticity to the substrate sheet so that it can be easily deformed under the interaction force; moreover, the elastic element can knock the top end of the substrate sheet to make a much more clear and clangorous sound. When theelastic element 204 on the collecting chamber presses down thenon-elastic element 107 on the lid edge, since the substrate sheet has certain elasticity, it also undergoes elastic deformation under the interaction of the force. When the protrudedelastic element 204 knocks thetop end 111 of the substrate sheet, the substrate sheet and the elastic element collide with each other, since the substrate sheet may decrease the influence of the lid on the vibration, this may result in a much more clear and clangorous sound. - In another more preferable embodiment, the
basal end 109 of the substrate sheet is connected with the lid edge, and the top end 110 of the substrate sheet is connected with the lid edge via aconnection 112; at the same time, the width of theconnection 112, through which the top end 110 connects with the lid edge, is smaller than the width of the connection part through which the basal end connects with the lid edge, so that agap 105 is formed between the top end of the substrate sheet and the lid edge. In this way, the substrate sheet can be easily deformed elastically under the interaction between theelastic element 204 and the protrudingelement 103 so as to make a much more clear and clangorous sound. - In another optional embodiment, after the
elastic element 204 moves on the surface of the protrudingelement 103 and knocks the lid edge to make a sound, the lid and the collecting chamber can no longer moved relative to each other, but fixed at a position and in a locked state. In a specific embodiment, after the lid seals the opening, the lid cannot be rotated reversely to open the opening. One of the ways to fix the lid is that thenon-elastic element 104 prevents the elastic element from rotating reversely; for example, thelid 10 rotates clockwisely to seal theopening 201, after the indicatingdevice 30 makes an indication, since the non-elastic element has a surface vertical to the lid edge so that it stops the elastic element from moving backwards, the elastic element thus cannot be rotated counter-clockwisely, as shown inFIG. 7C orFIG. 6D . In this way, the lid and collecting chamber are in a locked state. “Locked state” in the present invention means that the lid and collecting chamber are fixed together as a whole, the lid cannot move relative to the opening of the collecting chamber, including both continuous rotation of the lid for sealing the opening of the collecting chamber and reversed rotation of the lid for opening the opening of the collecting chamber. - In another optional embodiment, after the
elastic element 204 moves on the surface of the protrudingelement 103 and knocks the lid edge to make a sound, the movements of the lid and collecting chamber can be reversed to open the opening of the collecting chamber. For example, when the operator rotates the lid to the appointed position, upon hearing a sound of “pa” made by the indicating device, he/she stops further rotating the lid, this sound indicates that the lid has been placed at the position for sealing the opening of the collecting chamber. At this time, other operations can be undertaken to detect the analyte in the sample. Of course, upon hearing the indication sound made by the indicating device, the operator can also start to count the time to be waited for reading the detecting result displayed on the detecting element, e.g., the operator starts reading the detecting result displayed on the detecting element after waiting for example 2-5 minutes. Reading means directly observing changes of the color or the shade of color on the detecting element by naked eyes to determine whether or not the analyte exists or the quantities of the analyte therein, or directly reading and automatically outputting the results by a machine. After finishing these operations, for example, if finishing the detection and finding that the detecting result is positive, the sample in the detective device is to be delivered to the professional institution, where the operator needs to rotate the lid reversely to open the collecting chamber and extract the sample for confirmation. In order to facilitate reverse rotation of the lid, in a specific embodiment, as shown inFIG. 8 , the non-elastic element contains anslope 21 being in contact with anslope 40 on the elastic element, when the lid is reversely rotated, since theelastic element 204 has elasticity, itsslope 40 receives a force from non-elastic element and consequently bends downwards, so that the lid can successfully rotate reversely to open the opening of the collecting chamber. - Detecting Method
- The present invention provides a method for detecting analyte in the sample, comprising: providing a detecting
device 100, which comprises: a collectingchamber 202 including anopening 201 for collecting liquid sample, a detecting element for detecting analyte in the liquid sample, and alid 10 for covering the opening of the collecting chamber; when the lid is covered onto the opening of the collecting chamber, an indicatingdevice 30 on the detecting device indicates whether or not the lid has covered at the appointed position. In an embodiment, the indicating device makes a sound to indicate. In another embodiment, once the indicating device sends an indication, the lid is stopped from being moving further onto the opening of the collecting chamber. In a specific embodiment, the lid seals the opening of the collecting chamber by means of rotating, once the indicating device sends an indication, the lid is stopped from being further rotated. Moreover, in another specific embodiment, once the indicating device sends an indication, the time to be waited for reading the detecting result displayed on the detecting element starts to be counted. In yet another specific embodiment, once the indicating device sends an indication, the time to be waited for reading the detecting result displayed on the detecting element starts to be counted calculated and, at the same time, the lid is stopped from being further rotated. - Detecting Element
- The detecting element can be lateral flowing detection test strip, which can detect various analytes. Certainly, other suitable detecting elements can also be applied to the present invention.
- Various detecting elements may be combined together and applied to the present invention. One form is the test strip. The test strips used for analyzing an analyte (e.g., drugs or body metabolites) in a sample have various kinds, such as the kind for immunoassay or chemical assay. The test strip can adopt the analysis mode of noncompetitive method or competitive method. A typical test strip can contain a water-absorbing sample-adding area, a reagent area, and a test area. Adding the sample to the sample-adding area and the sample flows into the test area via capillary action; if the analytes exist, the sample binds the reagents in the reagent area, and then the sample continues to flow into the test area; other reagents, such as molecules specifically binding the analytes are fixed in the test area, these reagents react with the analytes (if exist) in the sample and bind the analytes in this area, or bind a reagent from the reagent area. Markers for showing the detecting signal are in the reagent area or a separated label area.
- The typical analysis mode of noncompetitive method is: if the sample contains the analyte, the signal is generated, if the sample does not contain the analyte, the signal will not be generated, whereas in competitive method, if the analyte does not exist in the sample, the signal is generated, if the analyte exists in the sample, the signal will not be generated.
- The detecting element can be the test strip that is made from absorbent or nonabsorbent materials. The test strip may contain several materials for delivering the liquid sample; one material may cover onto the other material, e.g., the filter paper may cover onto the nitrocellulose membrane. One area of the test paper may contain one or more materials, whereas another area may contains one or more different materials. The test paper can be adhered to a certain support or hard surface for enhancing the strength of the test paper for handling.
- The analyte is detected via a signal-generating system. For example, one or more enzymes specifically react with the analyte; thus, they could be used to make the signal-generating systems that are fixed on the test area of the test strip by using the above described methods. The substances that can generate signals may be on the sample-adding area, reagent area, test area, or the entire test strip, and these substances may fill in one or more materials used in the test strip. Adding the solution containing signal substances onto the surface of the test strip or immerging one or more materials of the test strip into the solution containing signal substances, then drying the test strip with the solution containing signal substances.
- The areas of the test strip can be arranged in the following way: sample-adding area, reagent area, test area, control area, an area determining whether or not the sample is adulterated, and finally a sample absorbing area; the control area is positioned behind the test area. All of the above areas can be arranged on one test strip made of only one material, or different areas can adopt different materials. Each area can contact with the liquid sample directly, or different areas can be arranged according to the flowing direction of the liquid sample, with each area being connected to and overlapped with the other area. The materials used in the test strip may be those having good water absorption capability, such as filter paper, glass fiber or nitrocellulose membrane and the like. The test strip may adopt other forms, too.
- Types of the Sample
- Any types of samples can be applied to the device of the present invention for test, comprising body fluid (e.g. urine and other body fluids and clinical samples). The liquid samples may be samples from solid or semi-solid samples, comprising dungs, biological tissues and food samples. These solid or semi-solid samples can be converted into liquid samples by any suitable methods, for example, the solid samples (e.g. water, phosphate buffer or other buffers) are mixed, macerated, incubated, dissolved or subjected to enzymatic hydrolysis in a suitable liquid. The “biological samples” contains samples from living animals, plants and food, also contains urine, saliva, blood and blood ingredients, cerebrospinal fluid, vaginal swab, seminal fluid, sweat, secretion, tissue, organ, tumor, culture of tissues and organs, cell culture and medium therein, regardless whether they are from human beings or animals. The food samples contain processed food ingredients and final products, such as meat, cheese, alcohol, milk and drinking water. The plant samples contains samples from any plants, plant tissues, plant cell cultures and mediums therein. “Environmental samples” contains samples from environment (e.g. sample of lake water or samples of other water, sewage sample, soil sample, groundwater sample, sea water sample and samples of rubbish and waste water). The sewage and relevant rubbish can also be contained in the environmental samples.
- Type of the Analyte
- The present invention can be used for analyzing any analyte. Examples of the analyte that can be detected stably by the present invention comprise (but not limited to) human chorionic gonadotrophin (hCG), luteinizing hormone (LH), follicle-stimulating hormone (FSH), hepatitis C virus (HCV), hepatitis B virus (HBV), Hepatitis B virus surface antigen, AIDS virus and any drugs of abuse. The analyte can be detected in any liquid or liquefied samples, for example, urine, saliva, slobber, blood, plasma or serum. Other examples of the analytes also include, creatinine, bilirubin, nitrite, (non-specific) proteins, blood, leucocyte, blood glucose, heavy metals and toxins, bacterial components (e.g. special proteins and saccharides of the bacterium of particular type, e.g., E. coli 0157:H7, Staphyloccocus aureus, Salmonella, Clostridium perfingens, Campylobacter, Listeria monocytogenes, Vibrio parahaemolyticus, or Bacillus cereus). Any other analytes suitable for side-stream test can be detected by this device. The analyte can be infectious substances or the substance that can indicate the infection period. The analyte can be drugs (e.g. drugs of abuse), hormones, proteins, nucleic acid molecules, pathogens. “Drug of Abuse” (DOA) refers to using drugs (typically for paralyzing nerves) for non-medical purpose. Abuse of these drugs will cause the damage to the body and nerves so as to generate dependency, addiction and/or death. Examples of drugs of abuse include ***e, amphetamine (such as Black Beauty, white amphetamine tablets, dexamphetamine, dextro-amphetamine tablets, Beans); methyl amphetamine (crank, methamphetamine, crystal, speed); barbiturate (such as Valium®, Roche pharmaceuticals, Nutley, N.J.); sedative (drugs for assisting sleeping); lysergic acid diethylamide (LSD); depressants (downers, goofballs, barbs, blue devils, yellow jackets, methaqualone); tricyclic antidepressants (TCA, i.e., imipramine, amitriptyline and doxepin); phencyclidine (PCP), tetrahydrocannabinol (THC, pot, dope, hash, weed, and etc.); opiates (i.e., morphia, opium, codeine, heroin, dihydrohydroxycodeinone). This test strip can also be used to detect drugs which are for medical purposes but are easily overdosed, such as tricyclic antidepressants (imipramine or analogs) and acetyl aminophenol.
- Examples provided as follows will further describe the present invention, but in any case, they cannot be understood as limitations to the scope of the present invention.
- As illustrated in
FIG. 3 andFIG. 9 , thecup 20, which has theelastic element 204 on the collectingchamber 202, is injection molded by a die in one step, and is made of polypropylene material, wherein the collecting chamber is used for collecting the liquid sample, the detecting chamber 27 is connected to the collecting chamber at bottoms, an external screw thread is provided close to the opening of the cup, a ring of protrudingperiphery edge 203 is provided under the lower end of the screw thread, anelastic element 204 is provided on the edge of the protruding periphery edge 203 (having a width of 4 mm), the top end of this elastic element has a distance of about 4.5 mm from theperiphery edge plane 232, the thickness of the elastic element is about 2 mm. As illustrated inFIG. 1 ,FIG. 2 , andFIG. 9 ,lid 10,non-elastic element 103 andsubstrate sheet 104 are all made of acrylonitrile-butadiene-styrene copolymer, and are injection molded in one step; the substrate sheet has a length of 15 mm and a width of 5 mm, agap 106 having a width of 3 mm and a length of 13 mm is formed along the longitudinal direction of the substrate sheet, separating the substrate sheet from thelid edge 102, thetop end 111 of the substrate sheet is connected with the lid edge via a connection having a width of 2 mm, the remaining portion is again agap 105 having a length of 3 mm. Thenon-elastic element 103 on the substrate sheet is of a sliding platform shape, the highest point of the sliding surface has a distance of 1.5 mm from the surface of the substrate sheet. The thickness of the lid edge is about 2 mm. An inner screw thread matched the external screw thread of the opening of the collecting chamber is provided on the lid edge. The assembly of the molded detecting device is illustrated as shown inFIG. 5 . - Collecting the urine with the cup disclosed in
Experiment 1, and storing the urine in the collectingchamber 202, then rotating the lid onto the opening, conducting the detection for 50 times in total. Including an explicit instruction in the operation manual: stop rotating the lid upon hearing the sound of “pa”, at the same time, start counting the time to be waited for reading the detecting result displayed on the detecting element, which are 5 minutes. Each time the operation was conducted by a nonprofessional, and all the results are evaluated and compared at the end of the experiment. The experiment results show that in all 50 tests, each urine cup is totally sealed without leaking the urine; furthermore, 100% of the detecting results of the experiments are consistent with the result obtained by a traditional detecting device; and these non-professional persons are 99% pleased with the operation of this device, considering that the operation is simple and quick.
Claims (24)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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CN200910225108XA CN102072950B (en) | 2009-11-23 | 2009-11-23 | Device for detecting analyzed substance in sample |
CN200910225108.X | 2009-11-23 | ||
PCT/CN2010/001878 WO2011060623A1 (en) | 2009-11-23 | 2010-11-23 | Device for detecting analyte in sample |
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PCT/CN2010/001878 A-371-Of-International WO2011060623A1 (en) | 2009-11-23 | 2010-11-23 | Device for detecting analyte in sample |
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US16/816,000 Continuation US11992843B2 (en) | 2009-11-23 | 2020-03-11 | Device for detecting analyte in sample |
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US20130004940A1 true US20130004940A1 (en) | 2013-01-03 |
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US16/816,000 Active 2032-04-23 US11992843B2 (en) | 2009-11-23 | 2020-03-11 | Device for detecting analyte in sample |
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US16/816,000 Active 2032-04-23 US11992843B2 (en) | 2009-11-23 | 2020-03-11 | Device for detecting analyte in sample |
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US (2) | US20130004940A1 (en) |
EP (1) | EP2504106B1 (en) |
CN (2) | CN102072950B (en) |
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ES (1) | ES2773933T3 (en) |
WO (1) | WO2011060623A1 (en) |
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RU2581000C2 (en) * | 2011-10-25 | 2016-04-10 | Сосьете Лоррейн Де Капсулс Металликс-Манфактур Де Бушаж (Солокап-Маб) | Packaging system and its use |
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Also Published As
Publication number | Publication date |
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CN102072950B (en) | 2013-12-25 |
EP2504106B1 (en) | 2019-12-25 |
CN102072950A (en) | 2011-05-25 |
EP2504106A1 (en) | 2012-10-03 |
ES2773933T3 (en) | 2020-07-15 |
US11992843B2 (en) | 2024-05-28 |
US20200207523A1 (en) | 2020-07-02 |
CN103969427B (en) | 2016-03-16 |
CN103969427A (en) | 2014-08-06 |
WO2011060623A1 (en) | 2011-05-26 |
CA2809068A1 (en) | 2011-05-26 |
EP2504106A4 (en) | 2016-06-29 |
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