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1806results about "Internal electrodes" patented technology

Medical devices having electrodes mounted thereon and methods of manufacturing therefor

Medical devices, methods of manufacturing medical devices, and systems comprising medical devices are provided. The device comprises a shaft having a major lumen sized to receive a second medical device and an electrode mounted thereon. The shaft includes an inner liner and outer layer. The method of manufacture includes forming a shaft by forming an inner liner and an outer layer by covering the inner liner with a polymeric material. The method further includes mounting an electrode onto the shaft of the device, and then heating and cooling the shaft. The system comprises a medical device having a shaft and an electrode mounted thereon. The shaft has a major lumen sized to receive another device. The system further comprises an electronic control unit configured to receive signals from the electrode and to determine a position of the electrode and / or monitor electrophysiological data.

Method and apparatus for electrically stimulating the nervous system to improve ventricular dysfunction, heart failure, and other cardiac conditions

A method and apparatus are used to provide therapy to a patient experiencing ventricular dysfunction or heart failure. At least one electrode is located in a region associated with nervous tissue, such as nerve bundles T1-T4, in a patient's body. Electrical stimulation is applied to the at least one electrode to improve the cardiac efficiency of the patient's heart. One or more predetermined physiologic parameters of the patient are monitored, and the electrical stimulation is adjusted based on the one or more predetermined physiologic parameters.

Methods of affecting hypothalamic-related conditions

InactiveUS20050065574A1Internal electrodesExternal electrodesChemical stimuliHormone function
The present invention relates to a method of affecting a hypothalamic-related condition by electrically and / or chemically stimulating the hypothalamus. Also provided are methods of stimulating a hypothalamic-related target site by responding to a sensor signal relating to a physiological activity of the body associated with the hypothalamic-related condition desired to be affected. The present invention also describes a method of directly or indirectly modulating hormones synthesized or released by the hypothalamus to affect hypothalamic-related conditions involving hormonal function, dysfunction or imbalance.

Electrode designs and methods of use for cardiovascular reflex control devices

Devices, systems and methods by which the blood pressure, nervous system activity, and neurohornonal activity may be selectively and controllably reduced by activating baroreceptors. A baroreceptor activation device is positioned near a baroreceptor, preferably in the carotid sinus. The baroreceptor activation device may utilize electrodes to activate the baroreceptors. The electrodes may be adapted for connection to the carotid arteries at or near the carotid sinus, and may be designed to minimize extraneous tissue stimulation.

Controlled vagal blockage therapy

A method for treating at least one of a plurality of disorders characterized at least in part by vagal activity includes positioning an electrode around a body organ innervated by the vagus. An electrical signal is applied to the electrode to modulate vagal activity. The electrical signal is applied at a frequency selected for the signal to create a neural conduction block to the vagus with the neural conduction block selected to at least partially block nerve impulses on the vagus. The application of the electrical signal is discontinued. The application of the signal and the discontinuing of the signal are repeated with durations of the discontinuing and the application selected to treat the disorder.

MRI and RF compatible leads and related methods of operating and fabricating leads

RF / MRI compatible leads include at least one conductor that turns back on itself at least twice in a lengthwise direction, and can turn back on itself at least twice at multiple locations along its length. The at least one electrical lead can be configured so that the lead heats local tissue less than about 10 degrees Celsius (typically about 5 degrees Celsius or less) or does not heat local tissue when a patient is exposed to target RF frequencies at a peak input SAR of at least about 4 W / kg and / or a whole body average SAR of at least about 2 W / kg. Related devices and methods of fabricating leads are also described.

Electroporation to interrupt blood flow

A method for disrupting blood flow to undesirable tissue such as cells of a cancerous or non-cancerous tumor is disclosed. It involves the placement of electrodes into or near the vicinity of vessels supplying blood to the undesirable tissue and through the application of electrical pulses causing blood flow disruption. The electric pulses irreversibly permeate the cell membranes, thereby invoking cell death. The irreversibly permeabilized cells are left in situ and are removed by the body immune system. The process may further comprise monitoring blood flow and / or infusion of a material such as a chemotherapeutic agent or marker into the blood.

Shrinkage of dilatations in the body

A method and system for shrinking dilatations of a body, removing excess, weak or diseased tissue, and strengthening remaining tissues of the lumen walls. A catheter is disposed near the dilatation and fixed in position by inflatable occlusion balloons. Body fluids present in the occluded dilatation are evacuated and treatment fluid is exuded under pressure into the dilatation. Pressure is maintained by the treatment fluid while energy is applied by the catheter to heat the treatment fluid, causing the lumen walls to absorb the treatment fluid. Additional energy is then applied so as to preferentially heat the lumen wall tissues which have absorbed the treatment fluid, while at the same time treatment fluid is circulated to cool the inner surface of the lumen walls. The dilatation is occluded, a saline solution is introduced and absorbed into the lumen-wall tissue in the occluded region of the dilatation and then heated by application of radio frequency (“RF”) or other energy in order to soften only the lumen-wall tissue of the dilatation, the dilatation is shrunk by application of a chilled saline solution and a vacuum, and additional RF or other energy is emitted to ablate, further shrink, and harden only the lumen-wall tissue of the dilatation, without destroying the inner surface of the lumen or other tissues of the body beyond the lumen walls, thereby promoting growth of epithelial cells.
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