ELECTROMEDICAL IMPLANT AND MONITORING SYSTEM

• US 20110224520A1
• Filed: 03/04/2011
• Published: 09/15/2011
• Est. Priority Date: 03/09/2010
• Status: Active Grant

• Current Assignee: Biotronik SE & Company KG
• Original Assignee: Biotronik SE & Company KG
• Inventors: Skerl, Olaf, Lippert, Michael, Czygan, Gerald
• Granted Patent: US 8,965,493 B2
• Time in Patent Office: Days
• US Class Current: 600/345
• CPC Class Codes: A61B 2562/043 in a linear array
• CPC Class Codes: A61B 5/0535 Impedance plethysmography for measuring blood flow A61B5/0295
• CPC Class Codes: A61B 5/6846 specially adapted to be brought in contact with an internal body part, i.e. invasive
• CPC Class Codes: A61B 5/7207 of noise induced by motion artifacts

Abstract

An electromedical implant for monitoring a thoracic property of a living being is provided that includes a detector arrangement including an impedance measuring unit and an electrode arrangement, which are equipped to capture a measurement signal associated with the thoracic property in the form of an impedance signal; a monitoring arrangement, which is connected to the detector arrangement and equipped to generate a parameter from the measurement signal that is indicative of the thoracic property, and an evaluation unit, which is connected to the monitoring arrangement and equipped to determine an evaluation result regarding the thoracic property based on the parameter. According to the invention, the electrode arrangement comprises at least a plurality of mutually isolated electrodes, which are disposed on the housing and operatively connected by way of the impedance measuring unit and which can be separately controlled, wherein an electrode body has a strip shape.

Claims

1. An electromedical implant for monitoring a thoracic property of a living being, the implant comprising:

a housing;

a detector arrangement including an impedance measuring unit and an electrode arrangement, which are configured to capture a measurement signal associated with the thoracic property in the form of an impedance signal;

a monitoring arrangement connectable to the detector arrangement and configured to generate a parameter from the measurement signal that is indicative of the thoracic property, and

an evaluation unit connectable to the monitoring arrangement and configured to determine an evaluation result regarding the thoracic property from the parameter,

wherein the electrode arrangement comprises a plurality of mutually isolated electrodes that are disposed on the housing and operatively connected via the impedance measuring unit and that are separately controllable, and

wherein an electrode body has a strip shape.

2. The electromedical implant according to claim 1, wherein the impedance measuring unit includes an exciter module for delivering an electric current via the electrode arrangement and a sampling module configured to receive a voltage via the electrode arrangement.

3. The electromedical implant according to claim 1, further comprising a communication module configured to wirelessly transmit the evaluation result in an evaluation signal.

4. The electromedical implant according to claim 1, wherein, for forming a plurality of poles, the implant further comprises a plurality of electrodes, which are operated in pairs as operatively connected electrode pairs via the impedance measuring unit.

5. The electromedical implant according to claim 1, wherein a distance of the electrodes of a first electrode pair is greater than a distance of the electrodes of a second electrode pair.

6. The electromedical implant according to claim 1, wherein the electrode arrangement comprises at least one electrode disposed close to the implant, and/or a second electrode disposed away from the implant as part of an electrode structure.

7. The electromedical implant according to claim 1, wherein the electrode arrangement comprises at least one electrode disposed away from the implant, wherein the second electrode disposed away from the implant is part of a further electrode structure.

8. The electromedical implant according to claim 1, wherein a first electrode structure of the electrode arrangement is formed on the housing and/or a second electrode structure of the electrode arrangement is formed on an electrode lead connected to the housing.

9. The electromedical implant according to claim 1, wherein the electrode structure is formed by an electrode body in the shape of a strip electrode, an annular electrode, or an interdigital electrode.

10. The electromedical implant according to claim 1, wherein a first electrode and/or a first electrode pair of the electrode arrangement is controllable separately using an electric frequency and/or amplitude and/or phase that is different from a further electrode and/or electrode pair.

11. The electromedical implant according to claim 1, wherein a first measurement signal in the form of a first impedance signal is formed on the basis of a first exciter frequency, and/or a second measurement signal in the form of a second impedance signal is formed on the basis of a second exciter frequency.

12. The electromedical implant according to claim 1, wherein the electrode structure comprises a plurality of at least three electrode bodies.

13. The electromedical implant according to claim 1, wherein the plurality of electrodes are disposed symmetrically to a housing container of the implant, and are disposed on several sides of, or all sides of, or in an annular shape around a housing container of the implant.

14. The electromedical implant according to claim 1, wherein the detector arrangement for capturing the first measurement signal comprises an ECG (electrocardiogram) measuring unit including an electrode arrangement, which is equipped to detect the first measurement signal in the form of an ECG signal.

15. The electromedical implant according to claim 1, wherein the detector arrangement for capturing a thoracic property comprises one or more detectors, the detectors being an acoustic detectors, optical detectors, pressure and/or expansion detector, acceleration detectors, temperature detectors, oxygen detectors, and/or biochemical detectors.

16. A monitoring system, comprising the electromedical implant according to claim 1, comprising:

a communication module configured to wirelessly transmit the evaluation result in an evaluation signal from the implant;

a receiving unit configured to receive the evaluation signal; and

a memory unit configured to store the evaluation result.