Catheter-free implantable needle biosensor
First Claim
1. An catheter-free subcutaneously implantable apparatus for producing a signal reflecting the concentration of molecules, said apparatus comprising:
- at least one needle shaped anode,at least one needle shaped cathode,a supporting base for mounting the anodes and the cathodes, anda contact means for connecting the anodes and the cathodes with a signal reading system.
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Accused Products
Abstract
Electrochemical biosensors consisting of two or more needle-shaped electrodes for monitoring of molecules such as glucose in the subcutaneous tissue are provided. The two electrodes are parallel to each other, and are fixed perpendicularly to the planar side of a sensor base which provides skin fixation and electric connection. The needle electrodes are made of rigid conducting materials, capable of inserting into the skin without the need of catheters. One electrode is the sensing electrode and the other, the reference electrode. A compound sensing membrane is attached onto the sensing electrode surface to detect analyzed molecules.
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Citations
20 Claims
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1. An catheter-free subcutaneously implantable apparatus for producing a signal reflecting the concentration of molecules, said apparatus comprising:
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at least one needle shaped anode, at least one needle shaped cathode, a supporting base for mounting the anodes and the cathodes, and a contact means for connecting the anodes and the cathodes with a signal reading system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A percutaneously implanted miniature sensor assembly, comprising a base, an anode, a cathode, a first contact plate, and a second contact plate;
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wherein the base further comprises a first mounting hole surface, a second mounting hole surface, a base top surface and a base bottom surface, wherein the first mounting hole surface defines a first mounting hole, and the second mounting hole surface defines a second mounting hole; wherein the first contact plate further comprises a first plate mounting surface defining a first plate mounting hole, and the second contact plate further comprises a second plate mounting surface defining a second plate mounting hole respectively; wherein the first contact plate and the second contact plate are set on the base on the base top surface, wherein the first plate mounting hole, the second plate mounting hole are in line with the first mounting hole and the second mounting hole respectively; wherein the anode and cathode are in needle shape and implantable in a body, wherein the anode body penetrate the first plate mounting hole and the first mounting hole, and the cathode body penetrate the second plate mounting hole and the second mounting hole, wherein the top of the anode and cathode are connected with the first contact plate and the second contact plate by electric conductive material, wherein the anode and the cathode are perpendicular to the base bottom surface. - View Dependent Claims (17, 18, 19)
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20. A percutaneously implanted miniature sensor assembly, comprising a base, an anode, a reference cathode, an assisting cathode, a first contact plate, a second contact plate and a third contact plate;
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wherein the base further comprises a first mounting hole surface, a second mounting hole surface, a third mounting hole surface, a base top surface and a base bottom surface, wherein the first mounting hole surface defines a first mounting hole, the second mounting hole surface defines a second mounting hole, and the third mounting hole surface defines a third mounting hole; wherein the first contact plate further comprises a first plate mounting surface defining a first plate mounting hole, the second contact plate further comprises a second plate mounting surface defining a second plate mounting hole, and the third contact plate further comprises a third plate mounting surface defining a third plate mounting hole respectively; wherein the first contact plate, the second contact plate and the third contact plate are set on the base on the base top surface, wherein the first plate mounting hole, the second plate mounting hole, the third plate mounting hole are in line with the first mounting hole, the second mounting hole and the third mounting hole respectively; wherein the anode, the referencing cathode and the assisting cathode are in needle shape and implantable in a body, wherein the anode body penetrate the first plate mounting hole and the first mounting hole, the referencing cathode body penetrate the second plate mounting hole and the second mounting hole, and the assisting cathode body penetrate the third plate mounting hole and the third mounting hole, wherein the top of the anode, the referencing cathode and the assisting cathode are connected with the first contact plate, the second contact plate, and the third contact plate by electric conductive material, wherein the anode, the referencing cathode and the assisting cathode are perpendicular to the base bottom surface respectively.
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Specification