111 results about "Gel electrode" patented technology

The invented non-invasive vital signs monitor is in a flexible, nominally flat planar form having integral gel electrodes, a sticky-back rear surface, an internal flex circuit capable of sensing, recording and playing out several minutes of the most recently acquired ECG waveform data and a front surface that includes an outplay port. The invented non-invasive body composition ‘risk’ monitor includes a measurement device for monitoring one or more variables including body fluid mass, dehydration, respiratory rate, blood pressure, bio-impedance, cardiography such as cardiac output, and body conformation parameters. The risk monitor may be provided in a lightweight carrying case into which the vital signs monitor plugs. Thus the two monitors may be independent or they may be integrated into one portable, non-invasive device that can convey important patient data to / from a remote patient medical data center via wireless telemetry for oversight, treatment and possible intervention by a physician.

The invented non-invasive vital signs monitor is in a flexible, nominally flat planar form having integral gel electrodes, a sticky-back rear surface, an internal flex circuit capable of sensing, recording and playing out several minutes of the most recently acquired ECG waveform data and a front surface that includes an outplay port. The invented non-invasive body composition ‘risk’ monitor includes a measurement device for monitoring one or more variables including body fluid mass, dehydration, respiratory rate, blood pressure, bio-impedance, cardiography such as cardiac output, and body conformation parameters. The risk monitor may be provided in a lightweight carrying case into which the vital signs monitor plugs. Finally, a lightweight portable probe or transducer containing a transmissive or reflective electro-optical emitter and receptor in the infrared spectrum is fitted on a subject's finger or toe. Associated electronics energize and monitor the probe, detect cardio-rhythmic fluctuations therefrom, and process digital data over a prescribed window to produce a non-invasive, qualitative or quantitative measure of the subject's circulation. In accordance with one embodiment of the invention, a simple tri-color LED array is used to indicate the subject's circulation as being normal, reduced, or borderline. Thus the vital signs, bio-impedance, and circulation monitors may be independent or they may be integrated into one portable, non-invasive device that can concurrently monitor and locally display or remotely convey important patient data including circulation data to a local subject or physician or to / from a remote patient medical data center via wireless telemetry for oversight, treatment and possible intervention by a remote physician.

Straight and curved catheters for treatment or diagnoses of tissue, including cardiac tissue, using hydrogel virtual electrodes and hydrogel sensing electrodes are disclosed. Each catheter comprises at least one conductive hydrogel electrode, whether a virtual electrode or a sensing electrode. Hydrogel virtual electrodes may be used to deliver ablative energy or chemotherapeutic agents to tissue. Hydrogel sensing electrodes may be used to map various electrical activity of tissue. The ablation catheters include a variety of hydrogel delivery features to deliver the conductive hydrogel electrodes against or adjacent to tissue to be treated. Each hydrogel delivery feature comprises at least one opening in the distal portion of the catheter and may also include a permeable or semi-permeable membrane. The mapping catheters include conductive hydrogel disks (i.e., conductive hydrogel sensing electrodes) and nonconductive hydrogel disks. Methods of treating and diagnosing tissue using hydrogel virtual electrodes and hydrogel sensing electrodes are also disclosed.

An adhesive-mountable head-wearable EEG apparatus is disclosed. The apparatus includes an EEG sensor for acquiring an EEG signal of a wearer, a central processing unit for receiving the EEG signal, a small circuit board including the EEG sensor and the central processing unit, and a compact enclosing shell for enclosing the small circuit board, the EEG sensor, and the central processing unit. An adhesive electrode assembly attaches to the compact enclosing shell, or to the small circuit board within the enclosing shell, via snaps or magnets. The adhesive electrode assembly includes two or more gel electrodes for acquiring an EEG signal, and for adhering to the forehead so as to wearably support the EEG apparatus on the forehead. The compact enclosing shell includes chamfered edges, and is sized so as to reduce lateral forces on the compact shell that would tend to detach the EEG apparatus from the wearer's forehead.

An electro-stimulation system is provided with a compact power and control assembly and a plurality of shaped gel electrode patches with instructions to facilitate user administration of therapy.

The invention relates to a graphene-based flexile self-support mixed gel electrode and a preparation method thereof. In preparation, graphene oxide is reduced by adopting a hydrothermal method firstlyto obtain a graphene dispersion liquid; next, an active material and the graphene dispersion liquid are mixed uniformly to obtain a mixed dispersion object; and finally, the mixed dispersion object is subjected to suction filtration and washing to obtain the graphene-based flexile self-support mixed gel electrode. Compared with the prior art, graphene is adopted in the invention to replace a conductive agent, a binder and a current collector in the conventional electrode, so that the a self-support mixed gel electrode thin film with high flexibility is obtained; and the electrode has excellent specific capacity and rate capability, can be applicable to multiple active materials and solution systems, and has relatively high application prospect in the fields of a battery, a supercapacitorand other energy storage systems or other functional composite materials.

The invention provides a preparation method and a preparation container of a boron alkene and graphene composite aerogel electrode plate. The preparation method comprises the following steps: preparing boron alkene powder; and preparing the boron alkene and graphene composite aerogel electrode plate by using the boron alkene powder and the graphene oxide solution. The problem of structure instability after boron alkene loses metal substrate support is solved, the properties of boron alkene are fully utilized, boron alkene and graphene are combined to form a heterojunction, and the boron alkene / graphene heterojunction aerogel electrode plate is prepared and applied to a lithium ion battery negative electrode. The prepared aerogel electrode plate has excellent conductivity, an additional collector electrode is not needed in a battery, and the synthesized boron-alkene / graphene aerogel electrode plate has large specific capacity which is improved by 39% compared with a graphene skeleton without addition of boron-alkene. And meanwhile, the aerogel electrode plate is relatively good in high-rate charge-discharge performance.

A cell separation apparatus comprises a means for moving a cell within a cell separating space by applying an electrical voltage to cells in the cell separating space using gel electrodes, and channels for separating and discharging the cell, which thus does not damage a cell sample and prevents the exhaustion of an electrode due to its electrolysis.