BASIC ELEMENT FOR AN ELECTROMEDICAL DEVICE AND ELECTROMEDICAL DEVICE

Description

[0001] The invention relates to a basic element for an electromedical device and an electromedical device, namely an electromedical electrode or an electromedical catheter.

[0002] US patent 2009 / 240 314 A1 discloses an implantable electrode conduction system comprising the following: a series of stacked intermediate layers, a series of first components, wherein a first component extends from one of the intermediate layers and another first component extends from another of the intermediate layers, a series of second components, and a series of connectors connecting the series of first components to the series of second components, wherein the washers position the first components in a three-dimensional arrangement.

[0003] The datasheet "High-Sensivity Pulse Oximeter and Hear-Rate Sensor for Wearable Health, MAX30101" reveals a pulse oximeter and a heart rate sensor for wearable devices, fitness equipment, smartphones and tablets.

[0004] Electromedical devices, such as electromedical electrodes or electromedical catheters, are used to perform electromedical examinations and / or applications inside a patient's body. Depending on the design of the electromedical device, electromedical signals are either received from the body and transmitted to a receiving unit with an evaluation unit of the electromedical device, or impulses from a medical pulse generator, such as a pacemaker, are delivered to a target tissue in the patient's body.

[0005] The object of the invention is to improve the performance characteristics of electromedical devices, such as electromedical electrodes or electromedical catheters.

[0006] To solve the problem, a basic element for an electromedical device, namely for an implantable electromedical electrode and / or an electromedical catheter, is first proposed, which has the means and features of the independent claim directed to such a basic element. To solve the problem, it is thus proposed that such a basic element has a carrier element on which at least one sensor module and / or at least one electromedical stimulation means, at least one processing module connected to the sensor module and / or the stimulation means, and at least one data line to which the processing module is connected are arranged.

[0007] For example, at least one stimulation agent may be an electromedical stimulation agent, in particular a stimulation pole and / or an ablation pole, at least one photomedical stimulation agent, in particular a stimulation diode, and / or at least one biochemical stimulation agent.

[0008] The data line can be connected to a digital-electrical transmission interface of the base element or a device equipped with the base element.

[0009] The sensor module can be designed in such a way that the basic element can be used as the basic element of a sensing or mapping electrode.

[0010] With the basic element according to the invention and the functional units arranged thereon, namely the at least one sensor module, the at least one processing module and the data line, a modular construction of an electromedical device is possible. Depending on the application, several of the aforementioned basic elements can be connected to each other, thus providing a customized electromedical device.

[0011] Another special feature of the basic element according to the invention is the processing module. With the processing module, it is possible to convert sensor signals generated by the sensor module into processed data signals while still on board the basic element and to transmit them via the data line from the basic element to a receiving unit, for example, an evaluation unit, that is at least indirectly connected to the basic element. The processing module equips the basic element with computing power that enables the processing of the sensor signals. This can help to relieve the load on a connected receiving unit.

[0012] The data line can include an electrical conductor and / or an optical conductor. If an optical conductor is used, the sensor module, the processing module, and / or at least one stimulation device can optionally also be powered optically by light.

[0013] When processing the sensor signals generated by at least one sensor module, the processing module can already perform an evaluation and / or interpretation of the sensor signals and convert them into a monitored evaluative variable. In this way, it is possible to use the processing module to deduce an evaluative variable of interest from a physical quantity monitored by the sensor module. In a specific embodiment, which will be explained in more detail below, the sensor module can, for example, include a strain gauge and / or a force sensor and / or an accelerometer.

[0014] From the load, which can be determined, for example, using a strain gauge, and taking into account further parameters such as the stiffness and / or geometry of the support element of the base element, deductions can be made about the deformation and / or spatial orientation of the base element. This interpretation of the physical quantity detected by the sensor module can then be carried out using the processing unit on board the base element.

[0015] The processing module can therefore be configured to process a sensor signal generated by the sensor module on the base element.

[0016] In one embodiment of the base element, which facilitates a modular design of an electromedical device, such as an electromedical electrode or an electromedical catheter, at least one connection interface for connecting the base element to another and / or structurally identical base element, as claimed in one of the claims relating to a base element, is provided on the carrier element of the base element. This makes it possible to connect the data lines of the base elements to each other via the connection interfaces of the base elements. Interconnected base elements can thus be connected to a receiving unit, for example, an evaluation unit, via a common data line. Separate cabling for connecting the base elements is therefore unnecessary.Several interconnected basic elements can communicate with each other and with a connected receiving unit via a bus system.

[0017] To manufacture an electromedical device from several basic elements, it may further be advantageous if at least one connection interface for connecting the basic element to another and / or structurally identical basic element according to one of the claims directed to such an element is formed on the support element of the basic element. The connection interface can be used in particular for the mechanical connection of two basic elements.

[0018] In one embodiment of the base element, a connection interface and / or a connection interface is formed by a solder pad on the base element. This makes it possible to connect two base elements of an electromedical device both mechanically and via signal transmission using the connection interfaces and / or connection interfaces designed as solder pads. The previously mentioned digital-electrical transmission interface, for example, can serve as the connection interface.

[0019] In one embodiment of the basic element, a processing module comprises an application-specific integrated circuit. The application-specific integrated circuit can be an ASIC. The application-specific integrated circuit can, for example, be configured to convert a sensor signal generated by the sensor module into an evaluation value and / or to transmit the evaluation value and / or the sensor signal via the data line of the basic element to a receiving unit, in particular an evaluation unit, that can be connected to the basic element, at least indirectly. In one embodiment of the basic element, the application-specific integrated circuit is configured to convert a sensor signal generated by a strain gauge and / or force sensor of the sensor module into a force as an evaluation value and to transmit this evaluation value via the data line to the aforementioned receiving unit.

[0020] The basic element, in particular at least one sensor module of the basic element, can include at least one strain gauge and / or at least one force sensor and / or at least one accelerometer and / or at least one biochemical sensor and / or at least one biosensor for biochemical bodily states, in particular for the detection of inflammation, and / or at least one temperature sensor and / or at least one stimulation device. Such a stimulation device can be configured to deliver stimulation pulses to a target tissue of a patient, for example, nerve tissue and / or muscle tissue. At least one stimulation device can, for example, be at least one optical stimulation diode and / or at least one electromedical stimulation electrode and / or an ablation electrode, which will be explained in more detail below.

[0021] In this way, it is possible to assign different functions to the basic element according to the different sensor types and / or the stimulation medium with which it may be equipped. In an electromedical device, described in more detail below, which comprises different basic elements of the type described above, it is possible that the basic elements have different sensors and / or that at least some of the basic elements also have at least one stimulation medium, such as an optical stimulation diode and / or an electromedical stimulation pole. In this way, an electromedical device is created that comprises several of the aforementioned basic elements, each with different assigned functions.

[0022] To manufacture a sensing and / or mapping electrode using the basic element, the basic element, in particular the at least one sensor module, can have at least one electromedical lead point. To also enable ablation treatments, it is advantageous if the basic element, in particular the at least one sensor module, has at least one electromedical ablation lead point as a stimulation agent. In this way, the basic element and a device manufactured from it can be used for the therapeutic manipulation of tissue. If the basic element has at least one electromedical stimulation agent, it is suitable for manufacturing an electromedical stimulation electrode.

[0023] It can be particularly advantageous if the basic element includes a compensation device, such as a compensation circuit, designed to compensate for temperature variations during the processing of a sensor signal by the processing module. Especially with sensor modules whose sensor signal generation depends on the ambient temperature, it can be beneficial to compensate for, or correct, the generated sensor signals based on the ambient temperature to which the basic element is exposed during operation. This aims to ensure the most accurate possible monitoring of the physical quantity by the sensor module and / or to facilitate the accurate processing of the physical quantity into an evaluation value by the processing module.In this context, it can be particularly advantageous if the basic module has at least one temperature sensor whose measured values ​​can be taken into account in the compensation described above.

[0024] The basic element, in particular the at least one sensor module, can further include a detection device, especially a detection circuit, for detecting, for example, a tissue condition or tissue contact. For this purpose, the detection device can be configured, for example, for impedance measurement. This measurement is helpful for better interpreting signals derived from the tissue under investigation and / or for triggering, preferably automatically, and / or, if necessary, preventing the delivery of stimulation pulses to the tissue, for example, because there is insufficient contact with the tissue.

[0025] In a preferred embodiment of the base element, the carrier element can consist of printed circuit board foil, in particular a blank of printed circuit board foil. This makes it possible to integrate the data line and, for example, the previously mentioned at least one connection interface, or optionally further connection interfaces, for example for the at least one processing module and / or the at least one sensor module, into the printed circuit board foil of the carrier element, or to print and / or deposit them onto the printed circuit board foil.

[0026] In a preferred embodiment of the base element, the support element consists of a flat section of printed circuit board foil, which unfolds into a three-dimensional, preferably elongated, body when the base element is in its operating position. This gives the printed circuit board foil support element of the base element high stability, considering the material used and its own weight. In its operating position, the support element can, for example, be folded into a three-dimensional body in the form of a prism, preferably a straight one, or a cylinder.

[0027] The at least one sensor module of the base element can be arranged on a side of and / or in the center of the support element, forming an inner surface of the three-dimensional body, as described above. In this way, the sensor module of the base element is well protected within the three-dimensional body of the base element. In one embodiment of the base element, the at least one processing module and / or the at least one data line can also be arranged on a side of the support element that forms an inner surface of the three-dimensional body. It is possible for the sensor module and / or the at least one processing module and / or the at least one data line to be arranged on the same inner surface of the three-dimensional body or on different inner surfaces of the three-dimensional body.

[0028] In one embodiment of the basic element, the data line can be integrated into the carrier element, particularly if the carrier element consists of printed circuit board foil.

[0029] In an embodiment of the basic element in which the carrier element consists of a printed circuit board film, for example a PCB film, the at least one data line and / or at least components of the at least one processing module and / or the at least one sensor module can be printed and / or deposited onto the printed circuit board film.

[0030] To solve the problem, an electromedical device with the features of the independent claim directed to such an electromedical device is also proposed. In particular, to solve the problem, an electromedical device is proposed that has at least one basic element according to one of the claims directed to such a device. The electromedical device is designed as an implantable electromedical electrode and / or electromedical catheter.

[0031] In one embodiment of the electromedical device, it comprises only a single basic element. This basic element can extend from a distal to a proximal end of the device. If the device is designed as a catheter, the basic element can also include a connecting cable, a connecting line, and / or an optical fiber, which may be connected to an evaluation unit and / or control unit of the device.

[0032] In one embodiment of the electromedical device, it is provided that it has at least two basic elements according to each of the claims directed to such elements. The processing modules of the basic elements can be connected to a common data line of the electromedical device. The common data line of the electromedical device can be composed, at least in part, of the data lines of the interconnected basic elements of the electromedical device, or at least in part consist of these data lines.

[0033] To give the electromedical device good stability, it may be advantageous for two interconnected basic elements to overlap each other at least partially.

[0034] Processing modules of the basic elements of the electromedical device can be part of a data bus system of the electromedical device. In this case, the processing modules of the basic elements can be connected to a common data line that extends across all the basic elements of the electromedical device. This minimizes the number of data lines required.

[0035] In one embodiment of the electromedical device, it is provided that it has a control unit and / or a receiving unit, in particular with an evaluation unit, to which at least one basic element is at least indirectly connected. The sensor signals of the sensor module, processed by the processing module of the at least one basic element, can then be transmitted to the receiving unit of the electromedical device for further processing and / or evaluation.

[0036] Furthermore, the electromedical device may include at least one medical pulse generator. This pulse generator could be, for example, an electromedical and / or photomedical pulse generator. In this way, electromedical, photomedical, and / or biochemical pulses can be transmitted to at least one corresponding stimulation element of the electromedical device, which may be arranged on or formed within a basic element of the electromedical device, and from there delivered to a patient's target tissue. Thus, an electromedical device in the form of a stimulation electrode, pacemaker electrode, and / or such a catheter can also be created from the aforementioned basic elements.

[0037] The electromedical device can further comprise a casing within which the at least one basic element is protected. For example, a sheathing tube can be provided as the casing. Preferably, all basic elements of the electromedical device are arranged in a common casing, in particular in a common sheathing tube.

[0038] In a preferred embodiment, the electromedical device is designed as an electromedical electrode, in particular as a sensing electrode, mapping electrode and / or ablation electrode. The device can also be designed as an implantable electromedical electrode.

[0039] The electromedical device can also be designed as an electromedical catheter.

[0040] The invention is described in more detail below with reference to an exemplary embodiment, but is not limited to this embodiment. Further exemplary embodiments result from combining the features of one or more claims with each other and / or in combination with one or more features of the exemplary embodiment. The following are shown: Fig. 1 is an isometric representation of a basic element which has a carrier element made of printed circuit board foil in its flat initial state, and is provided on one side of the carrier element with a processing module and a sensor module, Fig. 2 which is shown in Figure 1 The basic element shown in its unfolded operating position, Fig. 3, a total of four basic elements connected to each other via their connection and interfaces, as shown in the Figures 1 and 2 are shown in Fig. 4. Figure 3Figure 5 shows the four basic elements shown in the unfolded position, Figure 5 shows an electromedical device in the form of an electromedical electrode with several basic elements as shown in the previous figures, wherein the basic elements are arranged in a sheathing tube of the electromedical device, and Figure 6 shows a further embodiment of an electromedical device in side view with a single basic element and a basket at its distal end made of catheter arms.

[0041] All figures together show basic elements for an electromedical device 2, designated by 1. Figure 5 Figure 2 shows an electromedical device 2 comprising several interconnected basic elements 1, which can be used as an electromedical electrode, in particular as an implantable electromedical electrode, or as an electromedical catheter.

[0042] Figure 6 Figure 2 shows a device 2 designed as a basket catheter or basket catheter, comprising only a single basic element 1 extending from a distal end to a proximal end of the device 2.

[0043] In the following description of various embodiments of the invention, elements that are functionally identical are given the same reference numbers even if they differ in design or shape.

[0044] For example Figure 1 This illustrates that the basic element 1 has a support element 3. A sensor module 4, a processing module 5 connected to the sensor module 4, and at least one data line 6, to which the processing module 5 is connected, are arranged on the support element 3. The data line 6 can be formed by an electrical and / or optical fiber.

[0045] The processing module 5 of the base element 1 is configured to process a sensor signal generated by the sensor module 4 directly on the base element 1. The support element 3 of each base element 1 has two connection interfaces 7 for connecting the base element 1 to other and / or identical base elements 1. This is clearly illustrated by the Figures 3, 4 and 5 to recognize, each showing four interconnected basic elements 1.

[0046] Furthermore, each of the support elements 3 of the basic elements 1 has two connection interfaces 8 for connecting, in particular for mechanical connection, the respective basic element 1 with other and / or structurally identical basic elements 1. In the basic elements 1 shown in the figures, a connection interface 7 and a connection interface 8 are combined in one interface.

[0047] The connection interface 7 and the interface 8 are formed by a solder pad on the carrier element 3 of the base element 1. A solder pad makes it possible to establish a signal connection between the data lines 6 of the base elements 1 on the one hand, and a mechanical connection between the carrier elements 3 of the base elements 1 on the other.

[0048] The processing modules 5 of the devices 2 shown each comprise at least one application-specific integrated circuit 9. The circuits 9 of the basic elements 1 are configured to convert a sensor signal generated by the respective sensor module 4 into an evaluation variable and to transmit the evaluation variable and / or, if required, also the sensor signal of the sensor module 4 via the data line 6 to a receiving unit 10 that can be connected at least indirectly to the respective basic element and is connected in the operating position.

[0049] Depending on the embodiment, the basic elements 1, in particular their sensor modules 4, each have at least one strain gauge 11, at least one force sensor 12, at least one biochemical sensor 13, at least one biosensor 14 for biochemical body states, in particular for the detection of inflammation, and / or at least one accelerometer 30 and / or at least one temperature sensor 26. Furthermore, the devices 2 are also equipped with leads 27, via which electrical body signals can be recorded and sensing and / or mapping investigations can be carried out.

[0050] Especially the in Figure 6 The embodiment of the device 2 shown is particularly well suited for carrying out sensing and / or mapping studies due to the conduction poles 27 arranged on its catheter basket 31.

[0051] One of the basic elements 1 of the devices 2 shown in the figures is also equipped with at least one stimulation means 15, 16, 28, for example, an optical stimulation electrode 15, and also with at least one electromedical stimulation pole 16 and with at least one ablation pole 28. The aforementioned sensors and also the aforementioned stimulation diode 15 or the stimulation pole 16 can be arranged on the outside of the carrier element 3 of the respective basic element 1 in its operating position. Pulses for tissue ablation can be delivered via the ablation pole 28.

[0052] Distal basic elements 1 of the devices 1 shown are further equipped with detection devices 29. The detection devices 29 are integrated into the sensor modules 4 and are configured for detecting a tissue condition or tissue contact, for example by impedance measurement.

[0053] The basic elements 1 are also equipped with a compensation means 17, for example a compensation circuit, which is set up for temperature compensation during the processing of a sensor signal by the processing module 5 of the respective basic element 1 arranged on the carrier element 3.

[0054] In all the basic elements 1 shown in the figures, the support elements 3 consist of printed circuit board foil.

[0055] The Figures 1 and 2 Figures 3 and 4 illustrate that the support elements 3 of the basic elements 1 each consist of a flat cut of printed circuit board foil. Figure 1 and 3 The basic elements 1 with their support elements 3 are shown still as a flat cut. In the operating position, which is shown in the Figures 2 and 4As can be seen in Figure 5, the support elements 3 of the basic elements 1 are each unfolded into a three-dimensional, elongated body in the form of a right prism. More precisely, the unfolded sections of the support elements 3 have an imaginary enclosing surface that corresponds to that of a right prism.

[0056] The sensor module 4, the processing module 5, and the data line 6 of each basic element 1 are arranged on a side of the carrier element 3 that forms an inner side 17 of the three-dimensional body into which the carrier element is unfolded in the operating position of the basic element 1. As mentioned previously, sensors or stimulation diodes 15 or stimulation poles 16 of the basic elements 1 can be arranged on a side of the carrier element 3 that forms an outer side of the carrier element 3 when the carrier element 3 is folded.

[0057] Figure 1Figure 3 clearly shows that the carrier element 3 comprises a total of four interconnected strips 18 and 20 made of printed circuit board film. The strips 18 and 20 are connected to each other via connecting webs 19. The connecting webs 19 also function as film hinges, which allow the flat section of the carrier element 3 to unfold from the printed circuit board film. Figure 1 shown position in the Figure 2 The position shown allows for this. It is worth noting that the strip 20, on which the processing module 5 with the application-specific integrated circuit 9 is arranged, is longer than the other three strips 18 of the support element 3. The representation of the four interconnected support elements 3 according to Figure 3 This makes it clear that the basic elements 1 are connected to this longest strip 20 of the support elements 3. The connection interfaces 7 and the connection interfaces 8 of the basic elements 1 are also located on the longest strip 20.

[0058] It should be noted that at both free ends of each longest strip 20 of the respective carrier element 3, a connection interface 7 and a connection interface 8 are provided. The data line 6, as well as the connection interfaces 7 and the connection interfaces 8 of the carrier elements 3, can, for example, be printed and / or deposited onto the carrier elements 3. The same applies to connection interfaces and / or components of circuits of the sensor modules 4, the processing modules 5, or the compensation means 17.

[0059] Figure 5 Figure 1 shows an electromedical device 2 in the form of an electromedical electrode or an electromedical catheter. The electromedical device 2 comprises several basic elements 1, as shown in the Figures 1 to 4 are shown.

[0060] Figure 6Figure 2 shows an electromedical device 2 in the form of an electromedical electrode or an electromedical catheter. The electromedical device 2 comprises a single, continuous base element 1 that extends from a distal to a proximal end of the device 2 and has several arms in the distal end region that are arranged to form a catheter basket 31. Several sensor modules 4, and in particular the recording poles 27 and ablation poles 28, are arranged on the arms of the catheter basket 31. The catheter basket 31 forms an atraumatic tip of the device 2. The catheter basket 31 makes the device 2 well-suited for sensing and / or mapping, i.e., for creating excitation maps of a tissue under investigation. Figure 6 The device 2 shown, designed as a catheter, has a handle 32 with which it can be operated and positioned in the target tissue.

[0061] The processing modules 5 of the basic elements 1 of the electromedical device 2 are connected to a common data line 22 of the electromedical device. The common data line 22 of the electromedical device 2 is formed, at least in sections, by the data lines 6 of the basic elements 1.

[0062] The Figures 3 and 4 This indicates that two interconnected basic elements 1 of the electromedical device 2 overlap each other at least partially. The overlap occurs at the free ends of the longest strips 20 of the support elements 3 of the basic elements 1.

[0063] The processing modules 5 of the basic elements 1 of the electromedical devices 2 are part of a data bus system of the electromedical device 2. All processing modules 5 are connected to the common data line 22 of the electromedical device 2.

[0064] The electromedical device 2 is equipped with a receiver unit 10, which includes an evaluation unit 23 and a medical pulse generator 24, to which the basic elements 1 of the electromedical device 2 are connected via the common data line 22.

[0065] The electromedical device 2 according to Figure 5 furthermore, it has a covering 25, namely a sheathing tube, within which the basic elements 1 are arranged in a protected manner.

[0066] The invention relates to technical improvements in the field of electromedical devices, in particular electromedical electrodes and / or electromedical catheters. Among other improvements, a basic element 1 for an electromedical device 2 is proposed, which has at least one sensor module 4, at least one processing module 5, and at least one data line 6 on a carrier element 3, to which the at least one processing module 5 of the basic element 1 is connected. An electromedical device 2 can then be configured as required from at least one basic element 1 or, preferably, from several basic elements 1. Reference symbol list

[0067] 1 Base element 2 Electromedical device 3 Carrier element 4 Sensor module 5 Processing module 6 Data line 7 Connection interface 8 Connection interface 9 Circuit 10 Receiver unit 11 Strain gauge 12 Force sensor 13 Biochemical sensor 14 Biosensor 15 Stimulation diode 16 Stimulation pole 17 Compensation medium 18 Strip 19 Connecting bridges 20 Longest strip of 3 21 Inside 22 Common data line of 2 23 Evaluation unit 24 Pulse generator 25 Casing 26 Temperature sensor 27 Leakage pole 28 Ablation pole 29 Detection device 30 Accelerometer 31 Catheter basket 32 ​​Handle

Claims

1. Base element (1) for an electromedical device (2), specifically for an implantable electromedical electrode and / or an electromedical catheter, wherein the base element (1) comprises a carrier element (3) on which at least one sensor module (4) and / or at least one stimulation means (15, 16, 28), at least one processing module (5) connected to the sensor module (4) and / or to the stimulation means (15, 16, 28), and at least one data line (6) are arranged, to which the processing module (5) is connected.

2. Base element (1) according to the preceding claim, wherein the processing module (5) is designed to process a sensor signal generated by the sensor module (4) on the base element (1).

3. Base element (1) according to one of the preceding claims, wherein at least one, in particular two, connection interfaces (7) for connecting the base element (1) to another and / or structurally identical base element (1) according to one of the preceding claims are formed on the carrier element (3), and / or wherein at least one, in particular two, interconnect interfaces (8) are formed on the carrier element (3) for connecting the base element (1) to another and / or identically constructed base element (1) according to one of the preceding claims.

4. Base element (1) according to the preceding claim, wherein the connection interface (7) and / or the interconnect interface is formed by a solder pad on the carrier element (3).

5. Base element (1) according to one of the preceding claims, wherein at least one processing module (5) comprises an application-specific integrated circuit (9), which in particular is designed to convert a sensor signal generated by the sensor module (4), in particular from one or the strain gauges of the sensor module (4), into an evaluation variable, in particular into a force, and / or to transmit the evaluation variable and / or the sensor signal via the data line (6) to a receiving unit (10) that can be connected at least indirectly to the base element (1).

6. Base element (1) according to one of the preceding claims, wherein the base element (1), in particular the at least one sensor module (4), comprises at least one strain gauge (11) and / or at least one force sensor (12) and / or at least one acceleration sensor (30) and / or at least one biochemical sensor (13) and / or at least one biosensor (14) for biochemical body conditions, in particular for detecting inflammation, and / or at least one temperature sensor (26) and / or at least one electrical discharge pole (27) and / or, as at least one stimulation means, at least one optical stimulation diode (15) and / or at least one electromedical stimulation pole (16) and / or at least one electromedical ablation pole (28).

7. Base element (1) according to one of the preceding claims, wherein the base element (1) has a compensation means (17), in particular a compensation circuit, which is designed for temperature compensation during the processing of a sensor signal by the processing module (5).

8. Base element (1) according to one of the preceding claims, wherein the base element (1), in particular the at least one sensor module (4), comprises a detection device (29), in particular a detection circuit, for detecting a tissue condition or tissue contact, in particular wherein the detection device (29) is designed for impedance measurement.

9. Base element (1) according to one of the preceding claims, wherein the carrier element (3) consists of printed circuit board foil, in particular a blank cut from printed circuit board foil.

10. Base element (1) according to one of the preceding claims, wherein the carrier element (3) consists of a flat cut-out of printed circuit board foil, in particular which is unfolded in the position of use of the base element (1) to form a three-dimensional, preferably elongated body, in particular a preferably straight prism or a cylinder.

11. Base element (1) according to the preceding claim, wherein the at least one sensor module (4) and / or the at least one processing module (5) and / or the at least one data line (6) are arranged on one side of the carrier element (3) which forms an inner side (17) of the three-dimensional body.

12. Electromedical device (2), namely implantable electromedical electrode and / or electromedical catheter, having at least one base element (1) according to one of the preceding claims.

13. Electromedical device (2) according to the preceding claim having at least two base elements (1) according to one of the preceding claims, whose processing modules (5) are connected to a common data line (22) of the electromedical device (2), in particular wherein the data line (6, 22) is an electrical and / or optical data line, in particular an optical fiber.

14. Electromedical device (2) according to one of claims 12 or 13, wherein two interconnected base elements (1) at least partially overlap each other.

15. Electromedical device (2) according to one of claims 12 to 14, wherein processing modules (5) of base elements (1) of the electromedical device are part of a data bus system of the electromedical device (2).

16. Electromedical device (2) according to one of claims 12 to 15, having a receiving unit (10), in particular having an evaluation unit (23), to which the at least one base element (1) is at least indirectly connected, and / or having a medical pulse generator (24) to which the at least one base element (1) is at least indirectly connected.

17. Electromedical device (2) according to one of claims 12 to 16, having a sheath (25), in particular having a sheath tube, within which the at least one base element (1) is arranged.

18. Electromedical device (2) according to one of claims 12 to 17, wherein the electromedical device (2) is designed as an implantable electromedical electrode, specifically as a mapping electrode and / or sensing electrode and / or ablation electrode, and / or as an electromedical catheter.