Biodevice and contact part structure of biodevice
View Patent ↗A biodevice is in an elongated form and has a conductive layer and an insulating layer stacked on a side surface of a shaft member at the center. A cylindrical hollow section is formed through the device, being connected to the exterior at a front end and extending from this front end axially. An electrode section is formed on an inner surface. A sensing substance such as enzyme may be placed at the electrode section to detect a current value corresponding to the concentration or quantity of an object under test placed between a counter electrode and the biodevice.
1. A biodevice formed in an elongated form that is inserted inside an organism and capable of directly detecting and measuring an object under test inside the organism comprising:
a shaft member at a center position of said biodevice, said shaft member extending in an axial direction and having a shaft diameter of 500 μm or less; and
a conductive layer and an insulating layer which are stacked on a side surface of said shaft member in a direction transverse to said axial direction;
wherein said biodevice has a cylindrical hollow section formed therethrough, being connected to the exterior at a front end and extending from said front end in said axial direction, said hollow section having an electrode section on an inner surface; and
wherein said hollow section is formed such that a front end of said shaft member is disposed at an inner bottom part of said hollow section said hollow section containing a member that varies volume or affinity by an external optical, thermal, or electrical stimulus.
2. The biodevice of claim 1 wherein said electrode section is formed along said inner surface of said hollow section so as to have an approximately cylindrical surface.
3. The biodevice of claim 2 wherein said electrode section is formed by a part of said conductive layer.
4. The biodevice of claim 2 wherein said hollow section contains a member that varies volume or affinity by an external optical, thermal or electrical stimulus.
5. The biodevice of claim 1 adapted for use with a front end part disposed inside an organism, said shaft diameter becoming smaller towards the front end part.
6. A contact part structure of a biodevice which is a structure of a contact part of a device adapted to be placed in an organism and capable of directly detecting and measuring an object under test inside the organism, a base of said device being connected to a base end, said contact part being adapted to contact said organism and having a shaft diameter of 500 μm or less;
wherein said contact part structure comprises a shaft member at a center position of said contact part, said shaft member extending in an axial direction, and a conductive layer and an insulating layer which are stacked on a side surface of said shaft member in a direction transverse to said axial direction; and
wherein said contact part structure has a cylindrical hollow section formed therethrough, being connected to the exterior at a front end and extending from said front end in said axial direction, said hollow section having an electrode section on an inner surface; and
wherein said hollow section is formed such that a front end of said shaft member is disposed at an inner bottom part of said hollow section, said hollow section containing a member that varies volume or affinity by an external optical, thermal, or electrical stimulus.
7. The contact part structure of claim 6 wherein said electrode section is formed along said inner surface of said hollow section so as to have an approximately cylindrical surface.
8. The contact part structure of claim 7 wherein said electrode section is formed by a part of said conductive layer.
9. The contact part structure of claim 7 wherein said hollow section contains a member that varies volume or affinity by an external optical, thermal or electrical stimulus.
10. The contact part structure of claim 6 adapted for use with a front end part disposed inside an organism, said shaft diameter becoming smaller towards the front end part.