JPH01102762U - - Google Patents

Description

[Brief explanation of the drawing]

Fig. 1 is a plan view showing an embodiment of the diffusion-limiting membrane holder of this invention, Fig. 2 is a longitudinal sectional view, Fig. 3 is a plan view showing the main parts of the biosensor, and Fig. 4 is a longitudinal sectional view. , FIG. 5 is a diagram explaining the mounting operation, FIGS. 6 to 8 are plan views showing other embodiments, and FIG. 9 is a diagram illustrating the mounting operation.
The figure is a schematic perspective view showing another configuration of the main part of the biosensor, and FIGS. 10 and 11 are plan views showing still other embodiments. DESCRIPTION OF SYMBOLS 1... Thin plate, 4... Opening, 5... Diffusion limiting film, 11...
Projection, 41...groove.

Claims (1)

[Claims for Utility Model Registration] 1. A thin plate 1 having a predetermined shape is provided with an opening 4 for passage of a test solution at a predetermined position, and a diffusion limiting film 5 is provided on one side of the thin plate 1 to cover the opening 4. A diffusion-limiting membrane holder for a biosensor, characterized in that a protrusion 11 is formed at a predetermined position near an end of the thin plate 1 to hold the thin plate 1 in a floating state. 2. Claim 1 of the above-mentioned utility model registration, in which the thin plate 1 is a long plate, and a protrusion 11 is formed at a predetermined position near the end of the long plate away from the opening 4.
Diffusion-limiting membrane holder in the biosensor described in 2. 3. In the biosensor according to claim 1 or 2, wherein the thin plate 1 is a long plate, and the end of the long plate near the opening 4 is formed in an arc shape. Diffusion limiting membrane holder. 4. A diffusion-limiting membrane holder in a biosensor according to any one of claims 1 to 3, wherein the protrusion 11 is formed to protrude only on one side of the widthwise central portion of the thin plate 1. 5. The above-mentioned utility model registration claims 1 to 3, in which the protrusion 11 is formed to protrude from one side of the thin plate 1 at the center in the width direction, and from the other side at both ends of the thin plate 1. The diffusion-limiting membrane holder in any of the biosensors. 6. A diffusion-limiting membrane holder in a biosensor according to any one of claims 1 to 3, wherein the protrusion 11 is formed to protrude only on one side over the entire width of the thin plate 1. 7. The diffusion-limiting membrane holder in a biosensor according to any one of claims 4 to 6 of the above-mentioned utility model registration claim, wherein the protrusion 11 is formed in a bent shape. 8. A diffusion-limiting membrane holder in a biosensor according to any one of claims 4 to 6 of the above-mentioned utility model registration claim, wherein the protruding portion 11 is formed to protrude in an arc shape. 9. A diffusion-limiting membrane holder in a biosensor according to any one of claims 4 to 6, wherein the protrusion 11 is formed by bending an end of the thin plate 1. 10 Claim 1 of the above utility model registration, in which the thin plate 1 has a positioning hole 2 at a predetermined position
A diffusion-limiting membrane holder in a biosensor according to any one of Items 1 to 3. 11. The diffusion-limiting membrane holder in the biosensor according to claim 1 of the above-mentioned utility model registration claim, wherein the opening 4 has been subjected to a hydrophilic treatment and the vicinity of the opening 4 has been subjected to a water-repellent treatment. . 12. The diffusion-limiting membrane holder in the biosensor according to claim 1, wherein the opening 4 has a shape having a plurality of acute-angled irregularities. 13. The diffusion-limiting membrane holder in the biosensor according to claim 1, in which a plurality of grooves 41 are formed around the opening 4. 14. The diffusion-limiting membrane holder in a biosensor according to claim 13, wherein the groove 41 has a spiral shape.