Layered detection device
A biomarker detection device having a detection layer configured to detect one or more biomarkers in a biological sample and a transfer layer in direct contact with a first surface of the detection layer; wherein the transfer layer is configured to deliver the biological sample directly to the detection layer and wherein an observation window is provided on a second surface of the detection layer opposite the transfer layer and wherein there is no adhesive between the transfer layer and the detection layer in the region in register with the observation window. The detection layer may comprise two or more detection zones. The biomarker detection device may be part of a medical device, such as a swab receptacle. The device may comprise any one or more of: an adhesive layer, a label comprising a printed marking, a fixing element configured to attach or adhere the device to another object.
1 . A biomarker detection device comprising:
a detection layer configured to detect one or more biomarkers in a biological sample; and
a transfer layer in direct contact with a first surface of the detection layer; and
an adhesive layer;
wherein the transfer layer is configured to deliver the biological sample directly to the detection layer and the detection layer comprises two or more detection zones;
wherein two or more observation windows are provided on a second surface of the detection layer opposite the transfer layer, each corresponding to a respective detection zone;
wherein there is no adhesive between the transfer layer and the detection layer in the region in register with the observation window and one or more gaps are provided between adjacent observation windows;
wherein the adhesive layer is bonded to the transfer layer and detection layer, and the transfer layer is bonded to the detection layer in the one or more gaps.
2 . The device as claimed in claim 1 wherein the transfer layer and detection layer are bonded together at a location that is out of register with the observation window.
3 . The device as claimed in claim 1 , wherein the transfer layer comprises a first surface configured to receive the biological sample into the transfer layer and a second surface configured to deliver the biological sample to the detection layer, and the first surface of the detection layer is configured to receive the biological sample into the detection layer from the transfer layer, wherein at least part of the second surface of the transfer layer is in direct contact with the first surface of the detection layer.
4 . The device as claimed in claim 3 wherein only part of the second surface of the transfer layer is bonded to only part of the second surface of the detection layer.
5 . The device as claimed in claim 4 wherein the adhesive layer is provided on only part of the second surface of the detection layer, wherein the observation window comprises an opening in the adhesive layer.
6 . The device as claimed in claim 5 wherein the device further comprises a label bonded to the second surface of the detection layer by the adhesive layer, wherein the observation window comprises an opening in the label.
7 . The device as claimed in claim 6 wherein the label is stiffer and/or stronger than the adhesive layer and/or the detection layer and/or transfer layer.
8 . The device as claimed in claim 5 wherein the device further comprises a fixing element configured to attach or adhere the device to another object.
9 . The device as claimed in claim 8 wherein the fixing element comprises an adhesive layer and a releasable liner.
10 . The device as claimed in claim 1 wherein the transfer layer is configured to filter the biological sample before it is delivered to the detection layer.
11 . The device as claimed in claim 1 wherein the transfer layer is configured to release one or more reagents into the biological sample, and wherein the detection layer is configured to detect the one or more biomarkers using the one or more reagents.
12 . The device as claimed in claim 1 wherein the detection layer is configured to change colour in response to the presence of one or more biomarkers in the biological sample.
13 . The device as claimed in claim 1 further comprising a label bonded to the second surface of the detection layer wherein the observation windows comprise openings in the label, and the label is printed with markings corresponding to at least one detection zone.
14 . The device as claimed in claim 1 wherein one of the detection zones is a control zone configured to detect the presence of the biological sample.
15 . The medical device as claimed in claim 1 wherein the biomarker detection device is a swab receptacle.
16 . A method of forming a biomarker detection device, the method comprising:
providing a detection layer configured to detect one or more biomarkers in a biological sample, the detection layer comprising two or more detection zones;
providing a transfer layer in direct contact with a first surface of the detection layer;
providing two or more observation windows on a second surface of the detection layer opposite the transfer layer, each observation window corresponding to a respective detection zone;
providing an adhesive layer; and
bonding the detection layer and transfer layer together and wherein there is no adhesive between the transfer layer and the detection layer in the region in register with the observation window;
wherein one or more gaps are provided between adjacent observation windows;
wherein the adhesive layer is bonded to the transfer layer and the detection layer and the transfer layer is bonded to the detection layer in the one or more gaps.
17 . The method as claimed in claim 16 wherein the method comprises incorporating the biomarker detection device into a swab receptacle.