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Medical strip electrode

An electrode, medical technology, applied in the field of impedance cardiography electrodes, which can solve the problems of variation, indistinguishability, repeatability effects, etc.

Inactive Publication Date: 2005-07-13
科恩瑟斯蒂姆斯医疗技术公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Inability to distinguish most diagnostically valuable information from unavoidable background noise
Repeatability suffers due to discontinuous electrode pairs, as the distance between paired electrodes varies for all measurements, resulting in variation in measurement results
Even when two pairs of electrodes are connected (for example, by prefabricating a foil pre-stamped in a "figure-eight"), there is still the possibility that the eight is not applied parallel to the body axis, resulting in a critical The regrettable result of the reproducibility of the results

Method used

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Examples

Experimental program
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Embodiment Construction

[0030] figure 1 Schematic showing the upper body of a patient undergoing impedance cardiography measurements. According to the prior art, four electrodes A, B, C, and D are respectively arranged in pairs on each side of the patient's body below the neck and chest cavity, and are equipped with relevant connecting wires E. For example, these electrodes may be conventional round EKG electrodes, the contact area of ​​which is typically a circle with a diameter of about 10 to 12 mm.

[0031] exist figure 1 The two highest and lowest electrodes (electrodes A and D) are used to generate an electric field across the patient's entire chest, while the inner pair of electrodes (electrodes B and C) in each case are used to measure impedance.

[0032] Therefore, according to the prior art, the current is applied locally, which means that no uniform alternating electric field of sufficient strength for sensitive measurements can be generated between the point electrodes.

[0033] In medi...

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PUM

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Abstract

The invention relates to a medical electrode for measuring the resistance of a patient's body, in particular to an impedance cardiography electrode. Said electrode comprises a non-conductive, one-sided adhesive support (1), which is elongated and forms at one end a connection tab (1') for connecting the electrode to an electrical terminal ; Two contact strips (2a, 2b) formed by a conductive Al composite film as electrode material are bonded to the support (1) on the support bonding surface, on their surface facing away from the support (1) Form a composite structure with skin-friendly conductive adhesive, leaving the connection tabs (2a', 2b') and forming the connection tabs (2a', 2b') at the connection end of the support (1) ), the adhesive surfaces of the support (1) and contact strips (2a, 2b) in contact with the patient's body are protected by a peelable cover.

Description

technical field [0001] The invention relates to a medical strip electrode, especially an impedance cardiography electrode. Background technique [0002] Impedance cardiography is a relatively new field of medical diagnosis and is based on the measurement of the body's resistance (impedance) to electric current when an alternating current is applied. When a certain alternating current passes through the patient's chest and measure the voltage change due to the change of blood flow in the electric field, it is possible to derive such as heart rate, cardiac output, systemic vascular resistance, and blood circulation by converting the impedance change. Ranges for velocity and acceleration, heart pump volume, systole, and more. [0003] Various measurement designs are known in the prior art of impedance cardiography. One method relied on electrodes inserted with a pulmonary artery catheter, but was replaced by a more practical non-invasive method that did not require catheteriz...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/296
CPCA61B5/0535A61B5/259A61B5/28A61B5/0295
Inventor 于尔根·福廷温弗里德·内斯德伯恩哈德·内斯德法尔科·什克拉巴尔
Owner 科恩瑟斯蒂姆斯医疗技术公司