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375 results about "Skin preparation" patented technology

Skin preparation device and biopotential sensor

The skin preparation device and sensor of the present invention include an array of rigid tines. The tines serve to “self-prepare” the skin at each electrode site. These tines, when pressed against the skin, penetrate the stratum corneum, thereby reducing skin impedance and improving signal quality. A self-prepping device of the present invention is an optimized array of short non-conductive rigid tines in which the individual tines are created in a geometry that allows for a sharp point at the tip when molding, machining or etching is used as a method of fabrication. This non-conductive array with rigid penetrating structures may, therefore, be used in combination with a conductive medium, preferably an ionic conductive gel. In penetrating the stratum corneum, micro-conduits are created in the layers of the skin enabling the conductive medium to reach the low impedance layers and to transmit bioelectrical signals from the skin to the electrode surface. Such a self-prepping device can be readily mass produced using molding methods or possibly other manufacturing methods, thereby providing for a low cost means of achieving improved performance of the biopotential sensor. Additionally this invention includes the integration of this self-prepping device into a biopotential sensor comprising an array of one or more electrodes.
Owner:TYCO HEALTHCARE GRP LP

Different-plane microneedle array brain electrical dry electrode with controllable puncturing depth

ActiveCN102334989AControl the depth of penetration into the scalpAvoid troubleDiagnostic recording/measuringSensorsAnatomyElectrode array
The invention relates to a different-plane microneedle array brain electrical dry electrode with controllable puncturing depth, which comprises an integral frame, a microneedle electrode and a microneedle electrode carrier, wherein the microneedle electrode is installed on the microneedle electrode carrier to form a different-plane microneedle electrode array, and the different-plane microneedle electrode array is inserted into the frame by a hole array on the frame; and moreover, the different-plane microneedle electrode array can carry out vertical movement in the frame. A small cylinder onthe frame is inserted into hair, the interference of the hair to the electrode is avoided, and the different-plane microneedle electrode array can be used for controlling the electrode to carry out the vertical movement in the frame so as to regulate a proper position for puncturing the scalp to reach the germinal layer of the skin by a control device. The different-plane microneedle array brain electrical dry electrode with the controllable puncturing depth is used for a brain electrode structure collecting a brain electrical signal. By utilizing a traditional micro-electro-mechanical system(MEMS) process and a traditional mechanical structure, the brain electrical signal can be collected very well. Compared with a traditional wet electrode, a skin preparing step is not needed, and the different-plane microneedle array brain electrical dry electrode with the controllable puncturing depth can be used for the long-time detection of the brain electrical signal. According to the different-plane microneedle array brain electrical dry electrode with the controllable puncturing depth, the structure is small and exquisite, the use is convenient and quick, external noise is reduced, and the high-quality recording of a microvolt level brain electrical signal can be finished.
Owner:SHANGHAI JIAO TONG UNIV

Electroencephalo-graph dry electrode based on capacitive coupling principle

The invention discloses an electroencephalo-graph dry electrode based on a capacitive coupling principle, belonging to the technical field of biomedicine and used for measurement of human body potential. The dry electrode comprises a metal shielding case, a PCB (Printed Circuit Board) and a capacitive electrode, wherein the capacitive electrode contains a metal sheet for connecting the electrode and the PCB together. The over-all structure of the capacitive electrode is fixed in a cap, a contact of the capacitive electrode is inserted into hairs so as to avoid the hairs from disturbing signals in a measuring process, and the capacitive electrode fixed in the cap can be properly adjusted so as to obtain signals with higher quality. According to the invention, a brain electrode structure for electroencephalo-graph signal acquisition can acquire electroencephalo-graph signals very well based on the existing processing technology and mechanical structure; in comparison with the conventional wet electrode, the electroencephalo-graph dry electrode can be used for detecting electroencephalo-graph signals for a long term without executing a skin preparation step and cannot be influenced by movement of a measurement subject, and the electroencephalo-graph dry electrode has small and exquisite structure, can be used conveniently and quickly and can reduce external noise and finish high-quality record of microvolt electroencephalo-graph signals.
Owner:SHANGHAI JIAO TONG UNIV
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