1020 results about "Lead electrode" patented technology

Minimally invasive introducers and methods that can be used for rotationally securing devices within the human body. Introducers can include a distal element for releasably engaging a lead head controllable from a proximal control located outside of the body. An inner stem can extend between a proximal portion and a distal portion, and be pivotally and rotatably coupled to the distal lead engagement mechanism. An outer tube can be rotatably disposed over the inner stem and be flexibly coupled over the pivot to rotationally drive the distal element. A helical epicardial-myocardial lead electrode can be secured and oriented straight ahead and introduced through a port or small incision with the introducer in a straight configuration. The introducer can then be bent and rotated to screw the helical electrode into the heart.

A pulse stimulation system configured for implantation into a patient's body comprises a pulse stimulator, a conductive stimulation lead having a proximal end electrically coupled to the pulse simulator and having a distal end, and an electrode assembly coupled to the distal end of the stimulation lead. The electrode assembly comprises an electrode body having a therapy electrode thereon that is electrically coupled to the stimulation lead for delivering therapy to the patient. A floating electrode is configured to contact the patient's body tissue and has a surface area substantially larger than that of the therapy electrode. A filter is coupled between the therapy electrode and the floating electrode for diverting RF energy toward the floating electrode and away from the therapy electrode.

A neurostimulation lead is configured to be implanted into a patient's body and has at least one distal electrode. The lead comprises at least one conductive filer electrically coupled to the distal electrode, a jacket for housing the conductive filer and a shield surrounding at least a portion of the filer for reducing electromagnetic coupling to the filer.

A pulse stimulation system configured for implantation into a patient's body comprises a pulse stimulator, a conductive stimulation lead having a proximal end electrically coupled to the pulse simulator and having a distal end, and an electrode assembly coupled to the distal end of the stimulation lead. The electrode assembly comprises an electrode body having a therapy electrode thereon that is electrically coupled to the stimulation lead for delivering therapy to the patient. A floating electrode is configured to contact the patient's body tissue and has a surface area substantially larger than that of the therapy electrode. A filter is coupled between the therapy electrode and the floating electrode for diverting RF energy toward the floating electrode and away from the therapy electrode.

A lead configured to be implanted into a patient's body comprises a lead body and a conductive filer positioned within the lead body and having a distal portion. An electrode is electrically coupled to the lead body and comprises a stimulation portion, a bobbin, and at least one coil of wire wound on the bobbin and electrically coupled between the stimulation portion and the distal end region to form an inductor between the distal end region and the stimulation portion.

An implantable stimulation system comprises a stimulator for generating electrical stimulation and a conductive stimulation lead having a proximal end electrically coupled to the stimulator, wherein at least a first component of the impedance looking into the stimulator is substantially matched to the impedance of the stimulation lead. At least one distal stimulation electrode is positioned proximate the distal end of the stimulation lead.

A semiconductor device comprising a semiconductor element and a support member having a recess for housing the semiconductor element is disclosed. The support member includes lead electrodes and a support part holding the lead electrodes so that a surface of tip portions of the lead electrodes are exposed in a bottom of the recess. A main surface of the support member has at least a first main surface disposed adjacent to the recess and a second main surface disposed adjacent to the first main surface. The second main surface preferably has a protrusion and a further recess. The protrusion preferably forms an outer wall around a depression. The semiconductor device having this configuration has excellent and accurate positioning and can be strongly bonded with other members. The semiconductor device can also be obtained with a high process yield.

Minimally invasive introducers and methods that can be used for rotationally securing devices within the human body. Introducers can include a distal element for releasably engaging a lead head controllable from a proximal control located outside of the body. An inner stem can extend between a proximal portion and a distal portion, and be pivotally and rotatably coupled to the distal lead engagement mechanism. An outer tube can be rotatably disposed over the inner stem and be flexibly coupled over the pivot to rotationally drive the distal element. A helical epicardial-myocardial lead electrode can be secured and oriented straight ahead and introduced through a port or small incision with the introducer in a straight configuration. The introducer can then be bent and rotated to screw the helical electrode into the heart.

One embodiment of the present invention provides a lead electrode assembly for use with an implantable cardioverter-defibrillator subcutaneously implanted outside the ribcage between the third and twelfth ribs comprising the electrode.

An electrode for a cardiac lead and method of making the same are provided. The electrode includes an electrode member and a coating applied to the electrode member. A method of fabricating a high impedance cardiac lead electrode is provided. The method includes the steps of providing an electrode member and coating a first portion of the electrode member with an electrically insulating material and placing a tubular mask or shield over the electrode. Portions of the insulating material are removed to expose selected areas of the electrode. The second or exposed portion enhances the impedance of the electrode, resulting in power savings and extended life spans for implantable stimulation and sensing devices. Exemplary materials for the coating includes diamond-like carbon and sapphire.

A method and system for stimulating tissue using a plurality of electrodes is provided. Desired electrical parameter (e.g., field potential) values are determined at a plurality of spatial points. A plurality of constituent current sources is selected at the locations of the electrodes. The relative strengths of the constituent current sources that, when combined, result in estimated electrical parameter (e.g., field potential)|values at the spatial points that best matches the desired electrical parameter values at the spatial points are determined. The polarity and percentage of electrical current to be associated with each of the electrodes is selected based on the determined strengths of the constituent current sources. Electrical current is conveyed through the plurality of electrodes in accordance with the selected electrical current magnitudes to stimulate the tissue.

A method and system for stimulating tissue using a plurality of electrodes is provided. Desired electrical parameter (e.g., field potential) values are determined at a plurality of spatial points. A plurality of constituent current sources is selected at the locations of the electrodes. The relative strengths of the constituent current sources that, when combined, result in estimated electrical parameter (e.g., field potential)|values at the spatial points that best matches the desired electrical parameter values at the spatial points are determined. The polarity and percentage of electrical current to be associated with each of the electrodes is selected based on the determined strengths of the constituent current sources. Electrical current is conveyed through the plurality of electrodes in accordance with the selected electrical current magnitudes to stimulate the tissue.

An object of the present invention is to provide a light emitting device that has high output power and long service life where a package is suppressed from discoloring due to heat generation. The light emitting device 1 of the present invention contains a light emitting element 10, a package 40 formed of a thermosetting resin, the package having a recess 43 wherein the light emitting element 10 is mounted, a first lead electrode 20 which is exposed at the bottom of the recess 43 of the package 40 and whereon the light emitting element 10 is mounted, and a second lead electrode 30 which is exposed at the bottom of the recess 43 of the package 40 and is electrically connected to the light emitting element 10. The light emitting element 10 is bonded to the first lead electrode 20 through a eutectic layer 70, and at least a surface of the first electrode 20 is coated with an Ag film 22, a thickness of the Ag film 22 being in the range from 0.5 μm to 20 μm.

The invention provides a welding robot which makes it possible to, in a seam tracking operation during tandem welding, realize a high tracking ability, not only for a leading electrode, but also for a trailed electrode. A translational correction calculating unit (23) corrects a target value Plead(t) of the leading electrode (5a) using a translational correction amount Delta P(t) in a base coordinate system Sigmabase for a next time position of the leading electrode (5a), to obtain a primary correction target value Plead(t)'. A rotational correction calculating unit (24) calculates a rotation correction amount Delta theta(t) for correcting displacement of an orientation of a torch (6) around the leading electrode (5a) with respect to a actual weld line Lre generated because of the translational correction amount Delta P(t), and calculates a secondary correction target value Plead(t)'' resulting from correcting the primary correction target value Plead(t)' so that the torch (6) rotates around the leading electrode (5a) by the rotation correction amount Delta theta(t). A manipulator (2) is driven on the basis of the secondary correction target value Plead(t)''.

An anatomic space of the body, particularly the pericardial space, is accessed in a minimally invasive manner from a skin incision by an access instrument to facilitate visualization and introduction of devices or drugs or other materials, performance of medical and surgical procedures, and introducing and fixating a cardiac lead electrode to the heart. An elongated access instrument body preferentially bends in one direction and resists bending in a transverse direction, whereby the access instrument body distal end can be directed through a path around body structures to the anatomic site by manipulation of the access instrument body proximal end portion. A distal header formed at the access instrument body distal end extends outward of the access instrument body in the transverse direction and supports an inflatable balloon surrounding a working lumen exit port that is directed toward an anatomic surface when the balloon is inflated by inflation media introduced through an inflation lumen.

An electrode structure is disclosed for enhancing the brightness and / or efficiency of an LED. The electrode structure can have a metal electrode and an optically transmissive thick dielectric material formed intermediate the electrode and a light emitting semiconductor material. The electrode and the thick dielectric cooperate to reflect light from the semiconductor material back into the semiconductor so as to enhance the likelihood of the light ultimately being transmitted from the semiconductor material. Such LED can have enhanced utility and can be suitable for uses such as general illumination.

Internal electrodes A1 to D1 and A2 to D2 are laid in layers at spaces in the direction of thickness of a ceramic body 1. Lead electrodes a1 to d1 and a2 to d2 are led out to a side face to form lead portions. Dummy electrodes 51 to 58 have one-side ends led out to a side face to form lead portions in layers provided with the internal electrodes A1 to D1 and A2 to D2. The lead portion of a lead electrode a1 to d1 or a2 to d2 of each layer is superposed over the lead portion of a dummy electrode 51 to 58 belonging to another layer in the direction of thickness.

A semiconductor light emitting device includes a base substrate, lead electrodes provided on the base substrate, at least one semiconductor light emitting element loaded on the base substrate so as to be spaced apart from the lead electrodes and radiating blue light, a connection member for electrically interconnecting the electrodes and the semiconductor light emitting element, a reflector extended from a bottom of the base substrate to a predetermined height for surrounding the semiconductor light emitting element, and a translucent cover layer formed in the receiving space for housing the light emitting element, the translucent cover layer containing a color-shifting substance for absorbing at least a part of blue light radiated from the light emitting element to radiate a light having a different wavelength. The reflector is made of a material having high translucency and high thermal conductivity on a surface thereof so as to reflect the light radiated from the light emitting element and form a uniform planar light, and the reflector radiates the heat radiated from the light emitting element to outside so as to cool an inside of a receiving space for receiving the light emitting element. Thus, the device emits white light outside by combination of the blue light radiated from the light emitting element and the light having a different wavelength.