1564 results about "Shunt Device" patented technology

A neurostimulation system is configured for implantation into a patient's body and comprises a neurostimulator, a conductive stimulation lead having a first proximal end and a first distal end, at least one distal electrode electrically coupled proximate the first distal end, and a lead extension having a second proximal end electrically coupled to the neurostimulator and having a second distal end electrically coupled to the first proximal end. A shunt is electrically coupled to the first proximal end for diverting RF energy from the lead.

A shunt is provided for the flow of aqueous humor from the anterior chamber of the eye to Schlemm's canal and to other anatomical spaces of the eye. The shunt comprises at least one lumen and optionally has at least one anchor extending from a proximal portion of the shunt to assist in placement and anchoring of the device in the correct anatomic position.

The present invention provides a shunt for the flow of aqueous humor from the anterior chamber of the eye to Schlemm's canal. The device comprises at least one lumen and optionally has at least one anchor extending from the proximal portion within the anterior chamber to assist in placement and anchoring of the device in the correct anatomic position.

A fixed frequency continuously beam-steerable leaky-wave antenna in microstrip is disclosed. The antenna's radiating strips are loaded with identical shunt-mounted variable-reactance elements, resulting in low reverse-bias-voltage requirements. By varying the reverse-bias voltage across the variable-reactance elements, the main beam of the antenna may be scanned continuously at fixed frequency. The antenna may consist of an array of radiating strips, wherein each strip includes a variable-reactance element. Changing the element's reactance value has a similar effect as changing the length of the radiating strips. This is accompanied by a change in the phase velocity of the electromagnetic wave traveling along the antenna, and results in continuous fixed-frequency main-beam steering. Alternatively, the antenna may consist of two long radiating strips separated by a small gap, wherein identical variable-reactance elements are mounted in shunt across the gap at regular intervals. A continuous change in the reactance value has a similar effect as changing continuously the width of the radiating strips. This results in a continuous change in the phase velocity of the electromagnetic wave traveling along the antenna, thereby achieving continuous fixed-frequency main-beam steering.

A method and structure alters an integrated circuit design having silicon over insulator (SOI) transistors. The method/structure prevents damage from charging during processing to the gate of SOI transistors by tracing electrical nets in the integrated circuit design, identifying SOI transistors that have a voltage differential between the source/drain and gate as potentially damaged SOI transistors (based on the tracing of the electrical nets), and connecting a shunt device across the source/drain and the gate of each of the potentially damaged SOI transistors. Alternatively, the method/structure provides for connecting compensating conductors through a series device.

In certain embodiments, a thermoelectric system includes at least one cell. The at least one cell can include a first plurality of electrically conductive shunts extending along a first direction, a second plurality of electrically conductive shunts extending along a second direction non-parallel to the first direction, and a first plurality of thermoelectric (TE) elements. The first plurality of TE elements can include a first TE element between and in electrical communication with a first shunt of the first plurality of shunts and a second shunt of the second plurality of shunts, a second TE element between and in electrical communication with the second shunt and a third shunt of the first plurality of shunts, and a third TE element between and in electrical communication with the third shunt and a fourth shunt of the second plurality of shunts.

A magnetic device is formed from a permanent magnet generating magnetic flux, an armature which can occupy two positions between four poles and an electromagnet winding to which current can be supplied to produce a magnetic flux in one direction or the other, the flux from the winding causing the armature to move into one position and continue to remain in that position after the current flow ceases. The device can be incorporated into a fluid valve to act as a drive for opening and closing the valve. It may also serve as the drive for opening and closing electrical contacts. Monostable operation can be achieved by locating a magnetic flux shunt at one end of the armature travel. A holding solenoid may be incorporated. A pivoting armature in a fluid tight chamber comprises a fluid flow controlling device. It can adopt either of two home positions in contact with two magnetic poles and is retained by magnetic flux from a permanent magnet. Fluid can flow into and out of the chamber via a first passage. A second passage extends through one of the poles to an opening in the pole face which is covered by the armature when the latter occupies one home position but is uncovered when the armature occupies its other home position. A third fluid passage extends through and leads to a second opening in another pole, which is covered when the armature occupies its said other home position. Passages in the poles house energy storing springs each of which is compressed as the armature approaches the pole. A push rod can extend through a passage in one of the poles for conveying armature movement externally of the device.

Catheters, implantable shunt devices and methods usable to establish passageways between blood vessels and/or other anatomical structures within the body of a human or animal subject.

A long-term implantable arterio-venous shunt device or creation of a fistula is provided that can be used as a therapeutic method for treating chronic obstructive pulmonary disease (COPD). The shunt device is implanted between an artery and a vein, preferably between a peripheral artery and the inferior vena cava. The shunt device and method of creating a fistula increases cardiac output and decreases the systemic vascular resistance and allows a blood flow rate through the shunt device of at least 5 ml/min after the implantation. Based on the effects of the method and device to the respiratory, cardiac and circulatory system, the method and device are beneficial as a therapy to patients with problems or conditions related to these systems.

A method of coupling a shunt to a printed circuit board (PCB) of an energy management system is provided. The method includes coupling flexible electrical connectors to the shunt and soldering the flexible electrical connectors to connection points on the PCB of the energy management system. An energy management system that includes a shunt coupled to a printed circuit board using the above method is also provided.

A mechanical shunt for use in a socket of a string of lights resides in an otherwise typical lamp of a string of lights. The present shunt is a horizontal spring held in position by a shunt holder between the two conducting terminals on the interior walls of the socket so that the lateral ends of the shunt contact the terminals when the base is removed. When the base is inserted, a depending prong on the bottom of the base presses the shunt into a V-shaped surface formed in the shunt holder to pivot the lateral ends away from the terminals and allow current to flow through the Dumet wires to the filament.

A lamp for a light string has a mechanical shunt to allow current to pass to the next light in the event of a missing bulb. A resilient shunt is held in a generally lateral orientation by a shunt holder within the socket. When the hollow base with its bottom opening is inserted into the socket, the walls of the base cam the ends of the shunt away from the electrical contacts on the walls of the socket. Likewise, when the base is removed, the resilient lateral ends of the shunt return to engage the electrical contacts. The timing of the contact by the shunt with the electrical contacts avoids arcing. Additionally, slits formed in the wall of the base allows the Dumet wires to exit the sides of the base in the correct location for engaging the electrical contacts, thus reducing the instances of misaligned Dumet wires.

An implantable shunt device having a primary catheter and at least two secondary catheters extending from the primary catheter is provided. The primary catheter includes a connecting end, an open end, and an inner lumen extending therebetween. Each of the secondary catheters extend from the connecting end of the primary catheter and include a fluid passageway formed therein in fluid communication with the inner lumen of the primary catheter. Each secondary catheter also includes at least one fluid entry port in fluid communication with the fluid passageway. In an exemplary embodiment, the fluid entry ports are disposed on an inwardly facing portion of each of the secondary catheters. The shunt device can be used for a variety of diagnostic and therapeutic procedures, including for the removal or introduction of fluid to a treatment site.

A current sensor includes a shunt and at least one resistant element. The shunt conveys an electric current, and has a resistance which varies with the shunt's temperature. A resistant element, which has a resistance that varies with its own temperature, is electrically connected between the shunt and an output terminal of the current sensor. At least a portion of the resistant element is in thermal contact with a predetermined location on the shunt, so that the resistant element's resistance varies in accordance with the shunt temperature. The current sensor may be connected to an amplifier whose gain varies in accordance with the resistance of the resistant element. The variation in the resistance of the resistant element causes a change in the amplifier gain, which compensates for changes in the shunt resistance due to change's in the shunt's temperature. In some embodiments, a second resistant element is connected between the shunt and a second output terminal.