Biosensor and Method for Providing a Biosensor

Abstract

A biosensor is proposed for insertion into the subcutaneous tissue of a user wherein the biosensor includes at least one flexible substrate (2) and at least one electrode (5) on at least one surface (9) of the substrate and at least one contacting element (3). The contacting element is connected to the electrode. The substrate has at least one kink (4), at which the substrate is at least partly kinked such that the surface is subdivided into at least two interconnected outer surfaces (9a, 9b, 9c).

Description

CROSS-REFERENCES TO RELATED APPLICATION(S)[0001]This application is a continuation of and claims priority to International Patent Application no. PCT / EP2011 / 072732 which was filed on Dec. 14, 2011 which in turn claims priority to European patent application no. 10197413.7 filed on Dec. 30, 2010.FIELD OF THE INVENTION[0002]The invention lies in the field of biosensors, specifically biosensors for continuously measuring bodily fluid parameters in the body of a user. The invention relates to a biosensor for insertion into subcutaneous tissue of the user. The invention furthermore relates to a substrate blank for producing a biosensor and an insertion kit for inserting a biosensor into subcutaneous tissue of a user as well as to a method for producing a biosensor.DESCRIPTION OF THE RELATED ART[0003]In addition to so-called point measurements, which are merely carried out once or a few times, the prior art has also disclosed, inter alia, long-term monitoring of one or more physiological ...

AI Technical Summary

Benefits of technology

[0058]At the location at which the at least one electrode is situated, this preferred piece of the biosensor with an elongate shape can more particularly be referred to as shaft or tongue, wherein the shaft or the tongue can comprise at least one electrode region or wherein at least one electrode region can adjoin the shaft. The region in which the at least one contacting element is situated, which can also be referred to as contacting region, can for example be embodied separately from the electrode region and can for example have a wider structure compared to the shaft with the electrode region. This is particularly preferred, since the contacting elements can have a slightly wider structure in order to be able to connect the biosensor to a measuring instrument in a simple and uncomplicated fashion.

[0091]An advantage of using a flat lancet over other piercing elements is that it displaces less tissue during the insertion and therefore potentially allows insertions which are less painful to the patient.

Problems solved by technology

Even though the prior art has already shown options of how to provide continuously measuring biosensors, which have to be inserted into the body of the patient, with various geometrically formed and applied electrodes as efficiently as possible, the prior art discloses no adapted options for producing biosensors with more than one electrode in an efficient and cost-effective manner.

Since conventional printing methods for applying electrical components, such as, for example, printing methods such as for example screen printing, can in each case only be used to print one side of a surface of the substrate, the systems from the prior art with more than one printed surface have the disadvantage that this requires a number of process steps on both substrate surfaces to be repeated.

This leads to a very complicated and cost-intensive production process for biosensors with more than one substrate surface, which sensors are provided with electrodes, contacting elements and conductor tracks.

Moreover, the prior art only describes systems which only have one carrier on which the electrical components are applied.

This restricts the option of applying more electrical components onto the substrate over a predetermined length of the part to be inserted of the NTS than is allowed by this predetermined length.

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