JPH01102760U

JPH01102760U -

Info

Publication number: JPH01102760U
Application number: JP19770687U
Authority: JP
Priority date: 1987-12-26
Filing date: 1987-12-26
Publication date: 1989-07-11

Description

[Brief explanation of the drawing]

第１図は拡散制限膜装着機構の一実施例を示す
縦断面図、第２図は感染防止機構の動作を説明す
る図、第３図は血糖値測定装置の動作を説明する
要部概略図、第４図は他の実施例を示す分解斜視
図、第５図Ａは位置決め機構の要部を示す縦断面
図、第５図Ｂは第７図の一部透視下面図、第６図
は拡散制限膜保持板の構成を示す概略図、第７図
は拡散制限膜装着機構を組込んだ血糖値測定装置
を概略的に示す斜視図、第８図は従来例を示す概
略縦断面図。１…ケーシング、２…外部カバー、３…酵素電
極、４…拡散制限膜保持板、２８…リンク部材、
２９…内向き突部、３２…拡散制限膜保持板装着
部材、３３…貫通孔、３４…拡散制限膜保持板収
容溝、４４…拡散制限膜、５３…大径孔。 FIG. 1 is a longitudinal cross-sectional view showing an embodiment of the diffusion-limiting membrane attachment mechanism, FIG. 2 is a diagram explaining the operation of the infection prevention mechanism, and FIG. 3 is a schematic diagram of the main parts explaining the operation of the blood sugar level measuring device. , FIG. 4 is an exploded perspective view showing another embodiment, FIG. 5A is a vertical sectional view showing the main parts of the positioning mechanism, FIG. 5B is a partially transparent bottom view of FIG. 7, and FIG. FIG. 7 is a schematic diagram showing the structure of a diffusion-limiting membrane holding plate, FIG. 7 is a perspective view schematically showing a blood glucose level measuring device incorporating a diffusion-limiting membrane attachment mechanism, and FIG. 8 is a schematic vertical sectional view showing a conventional example. DESCRIPTION OF SYMBOLS 1... Casing, 2... External cover, 3... Enzyme electrode, 4... Diffusion-limiting membrane holding plate, 28... Link member,
29... Inward protrusion, 32... Diffusion limiting membrane holding plate attachment member, 33... Through hole, 34... Diffusion limiting membrane holding plate housing groove, 44... Diffusion limiting membrane, 53... Large diameter hole.

Claims

[Claims for Utility Model Registration] 1. A diffusion restriction device having a through hole 33 capable of accommodating an electrode 3 for body fluid measurement provided at a predetermined position of the casing 1, and a groove 34 capable of accommodating a diffusion restriction membrane holding plate 4. The membrane holding plate mounting member 32 is provided so as to be movable in the direction toward and away from the electrode 3, and is interlocked with the external cover 2 that is provided to be openable and closable with respect to the casing 1 and the opening and closing operations of the external cover 2. The inner cover 5 for infection prevention slides on the diffusion-limiting membrane retaining plate mounting member 32, and the inner cover 5 is attached to the diffusion-limiting membrane retaining plate mounting member 32 only when an upward movement biasing force of a predetermined amount or more is applied. a regulating mechanism 29 that allows movement in a direction away from the
29'. A diffusion-limiting membrane attachment mechanism in a biosensor. 2. The diffusion-limiting membrane mounting mechanism in the biosensor according to claim 1, wherein the diffusion-limiting membrane holding plate mounting member 32 is rotatably provided about one end thereof as a fulcrum. 3. Diffusion in the biosensor according to claim 1 or 2, wherein the inner cover 5 has a hole 53 that directly faces the through hole 33 only when the outer cover 2 is closed. Restriction membrane attachment mechanism. 4 The outer cover 2 is rotatably attached to the casing 1, and the inner cover 5 is slidably and rotatably attached to the diffusion-limiting membrane holding plate mounting member 3.
2, and the base of the outer cover 2 and the predetermined position of the inner cover are connected to the link member 28.
A diffusion-limiting membrane mounting mechanism in a biosensor according to any one of claims 1 to 2 of the above-mentioned utility model registration claims, which are connected by. 5. The inner cover 5 has a pair of protrusions 51 that engage with a pair of guide grooves 52 formed at predetermined positions of the diffusion limiting membrane holding plate mounting member 32, and
Claim 4 of the above-mentioned utility model registration, in which the protrusion 51 is connected to the external cover 2 by the link member 28.
Diffusion-limiting membrane mounting mechanism in the biosensor described in Section 3. 6. The diffusion limiting membrane mounting mechanism in the biosensor according to claim 1, wherein the regulating mechanism is a protrusion 29' formed protrudingly at a predetermined position of the inner cover 5. 7. The diffusion limiting membrane mounting mechanism in the biosensor according to claim 1, wherein the regulating mechanism is a protrusion 29 formed protrudingly at a predetermined position of the casing 1. 8 Claim No. 6 of the above-mentioned utility model registration in which the regulating mechanism allows sufficient upward movement of the inner cover 5 only when an upward movement biasing force of a predetermined amount or more is directly applied to the inner cover 5. 8. A diffusion-limiting membrane mounting mechanism in the biosensor according to item 7 or 8. 9. The regulation mechanism according to claim 6 or 7 of the above utility model registration claim allows the inner cover 5 to move sufficiently upward only when the outer cover 2 is opened by a predetermined amount or more. Diffusion-limiting membrane attachment mechanism in biosensors.