Electric-current biosensor

• US 20050252769A1
• Filed: 05/11/2004
• Published: 11/17/2005
• Est. Priority Date: 05/11/2004
• Status: Active Grant

• Current Assignee: Biomedix, Inc., Biomedix Taiwan
• Original Assignee: Biomedix, Inc., Biomedix Taiwan
• Inventors: Cho, Ching-Hsin
• Granted Patent: US 7,413,640 B2
• Time in Patent Office: Days
• US Class Current: 204/403.10
• CPC Class Codes: C12Q 1/001 Enzyme electrodes
• CPC Class Codes: G01N 27/3272 Test elements therefor, i.e. disposable laminated substrates with electrodes, reagent and channels optical biosensors G01N33/52

Abstract

An electric-current biosensor has a support, an electrode film, a conductive film, a bioactivity layer, and an adhesive layer. The support has a first support and a second support with a concave having a testing port therein. The electrode film has a first electrode film disposed on the first support and a second electrode film disposed on the second support. The first electrode film has a positive electrode film and a negative electrode film, which are formed with an interval slit therebetween. The conductive film has a positive and negative conductive films electrically connecting with the positive and negative electrode films, respectively. The bioactivity layer is disposed on the first electrode film and forms an activity area. The activity area covers at least some portions of the positive and negative electrode films. The adhesive layer is disposed between the first and second supports for bonding together.

Claims

1. An electric-current biosensor, comprising:

a support, having first and second supports, the second support being concave with a testing port formed in a middle portion of a side thereof;

an electrode film, having a first electrode film disposed on the first support and a second electrode film disposed on a middle portion of the second support, wherein the first electrode film has a positive electrode film and a negative electrode film, the positive electrode film and the negative electrode film are formed with an interval slit therebetween, and the interval slit extends vertically and inwardly from a side edge of the first support;

a conductive film, having positive and negative conductive films electrically connected to the positive electrode film and the negative electrode film, respectively;

a bioactivity layer, disposed on the first electrode film and forming an activity area, the activity area covering at least some portions of the positive electrode film and the negative electrode film; and

an adhesive layer, disposed between the first and second supports to bond the first and second supports together, wherein the testing port is disposed on the activity area.

2. The electric-current biosensor as in claim 1, wherein a folding line is formed between the first support and the second support.

3. The electric-current biosensor as in claim 1, wherein the second support is shorter than the first support.

4. The electric-current biosensor as in claim 1, wherein the testing port is semicircular in shape.

5. The electric-current biosensor as in claim 1, wherein the second support further comprises a ventilating cutout opposite the testing port.

6. The electric-current biosensor as in claim 1, wherein the interval slit extends laterally from a top end thereof to the conductive film.

7. The electric-current biosensor as in claim 1, wherein a top end of the interval slit extends to two sides and is T-shaped.

8. The electric-current biosensor as in claim 1, wherein the adhesive layer is disposed on the second support and disposed on two sides of the second electrode film.