211results about How to "Accurate and reliable positioning" patented technology

A tissue penetrating catheter that is usable to advance a tissue penetrator from within a blood vessel, through the wall of the blood vessel to a target location. The catheter includes at least one stabilizing device thereon for stabilizing catheter prior to advancing the tissue penetrator. The tissue penetrator may extend through a lumen in the body of the catheter and project transversely through an exit port. The stabilizing device may be located closely adjacent to the exit port, or may surround the exit port. The stabilizing device may be one or more balloons, or other mechanical structure that is expandable into contact with the inner luminal wall of the blood vessel. Desirably, the exit port is forced into contact with the blood vessel wall to shorten the distance that the tissue penetrator projects from the catheter body to the target location. The catheter is particular useful for forming blood flow tracts between blood vessels, in particular in coronary revascularization procedures. Methods of utilizing such a catheter to bypass an arterial obstruction is also disclosed.

A liquid container detachably mountable to a mounting portion of an ink jet recording apparatus in a slot-like mounting configuration where the liquid container is supported between a pair of engaging portions that respectively engage with a corresponding pair of locking portions on the mounting portion of the recording apparatus. The liquid container is supported in an upright configuration and includes a display portion on an upper side thereof, and a light emitting portion which emits light for display by the display portion. Because the display portion is disposed on an upper side, a user can confirm the display despite the mounting arrangement of the liquid container in the recording apparatus.

The invention relates to a polarizing beam splitter device, an interferometer module system, a lithographic apparatus, and a device manufacturing method. The polarizing beam splitter device includes an optical element and a polarizing beam splitter layer. The optical element includes a retroreflector surface having three mutually perpendicular faces of high optical quality, a radiation beam passage surface and a handling surface. By designing the optical element, in particular the handling portion, to the shape of a beam splitter element, such as a prism, the handling portion, and thus the polarizing optical beam splitter device etc. itself, may be made more compact and with fewer surfaces to be polished and/or antireflection-coated. The positioning of the parts in a beam splitter is more reliable. Devices, systems in which the polarizing beam splitter device has been incorporated, such as a polarizing beam splitter device with quarter wave plates and a reference mirror fixed thereto, may also be made more compact, accurate and reliable.

The invention belongs to a component of a locking structure of a nuclear fuel assembly, particularly relates to a joint of an upper tube socket of a nuclear fuel assembly. The invention comprises an upper tube socket and a joint positioned in the upper tube socket, wherein a convex shoulder, a convex lug and a boss are arranged on the joint, a locking ring with a cylindrical hollow structure is also installed in the upper tube socket, the lower end of the locking ring is an inwards convex step, the upper end of the locking ring is provided with an outwards convex component which is matched with a mounting groove at the upper end of the upper tube socket, and the step of the locking ring is clamped in a groove formed between a convex tongue and the convex lug on the joint. Compared with the detachable upper tube socket of the domestic traditional nuclear fuel assembly, the structure is simple, the positioning is accurate and firm, a loose component can not be generated in the processes of disassembly and assembly, and the safety and the reliability are higher. The invention does not have spare parts, is convenient and quick for removing and reassembling the upper tube socket, saves the man-hour and has favorable maintainability.

A host computer 80 for wholly controlling an electronic component mounting line displays a surface side image and a reverse side image which respectively show a surface side and a reverse side of a board having components mounted thereon, with the images being superposed; displays components mounted on the surface side of the board and components mounted on the reverse side in visually different modes; and designates and determines the positions of support places of a backup device on the displayed superposed image (step 108).

The invention relates to a navigation system for dental and cranio-maxillofacial surgery, comprising a surgical handpiece (2), an imaging unit (4) which is movably attached to the surgical handpiece (2), and a marker member (6; 44, 46) which is attachable to a cranial bone, a facial bone (26), a tooth or teeth of a patient. The marker member (6; 44, 46) comprises a plurality of marker elements (8, 10; 46) which are detectable by the imaging unit (4). Further, the invention relates to a positioning tool (40) for use with the navigation system, wherein the positioning tool (40) is configured for positioning the marker member (44, 46) on a patient's cranial bone, facial bone (26), tooth or teeth and comprises a die element (42) and the marker member (44, 46). The marker member (44, 46) comprises a deformable material (44), the deformable material (44) is releasably received in the die element (42) and the plurality of marker elements (46) are arranged on a surface of the deformable material (44) which faces the die element (42), The invention further relates to a navigation method for dental and craniomaxillofacial surgery using the navigation system and to a method of positioning a marker member (44, 46) on a patient's cranial bone, facial bone (26), tooth or teeth using the positioning tool (40).

An apparatus including a portable receiver with an acoustic sensor and a magnetic field sensor is adapted for locating a fault in an underground electrical line by evaluating ground-borne acoustic signals and electromagnetic signals emitted from a succession of sparking arc-overs caused at the fault location by voltage pulses fed into the electrical line. The apparatus further includes an arrangement for eliminating interference noises from the acoustic signals, wherein the acoustic received signals are delivered to and stored in a memory, and then a respective acoustic signal is processed with reference to a previous stored acoustic signal by a processing algorithm in a processing unit. Start time points of the individual acoustic signals are synchronized with reference to associated electromagnetic signals. A result of the processing algorithm is supplied to an evaluating unit.

The invention relates to a method and system for reading data on a data layer (105) of an information carrier (101) comprising one or more servo marks (108, 109) positioned relative to said data layer (105), the system comprising: probe array generation means (104, 102) for generating a probe array comprising an array of light spots (103) intended to be applied to said information carrier (101) so as to generate output beams representative of said one or more servo marks (108, 109) and said data, wherein the distance between the focal point of one or more light spots of a portion of said probe array and a respective portion of said information carrier corresponding to at least one servo mark is different to the distance between the focal points of the light spots of the rest of the probe array and the rest of said information carrier; an image sensor (106) for receiving said output beams and generating a corresponding image; means (116) for deriving a contrast value in respect of at least of a portion of said image corresponding to said at least one servo mark (108, 109) and generating a control signal (125) derived from said contrast value, said control signal (125) being for application to actuation means (AC6) for adjusting the distance between said information carrier (101) and said array of light spots (103).

The invention is a shoulder harness with an article carrier pocket, and more particularly to such a shoulder harness especially suited for accurately positioning a magnet on the body for triggering an implanted electronic device in a patient's body. The harness includes an important feature in an open-topped flexible pocket or pouch dimensioned to receive a magnet for switching a neurostimulator, with releasable fastening means for closing the open top to retain the magnet in the pocket. A first flexible pocket support strap has a length to extend around the patient's chest under the arms, with length adjusting means to adapt the strap to the size of the patient, and a quick-release fastener for releasably securing the first strap in position. The open-topped pocket has its bottom portion secured to the first strap, as by stitching, and a second flexible strap has a loop on one end slidably received on the first strap in position to extend over the patient's shoulder from the back and a free end received in a buckle carried on one upper corner portion of the pocket for adjusting the vertical position of the pocket on the patient. The length adjusting buckle may be attached, as by stitching, to the pocket by a short third strap. A gusset preferably extends from the opposite upper corner of the pocket to the first strap to assist in retaining the pocket in a substantially flat condition on the wearer's chest overlaying the implanted neurostimulator.

A clamping mechanism for welding an automobile exhaust pipe end flange comprises a base (1) and is characterized in that a flange positioning panel (2) is installed on the base (1) and connected with a supporting plate (3), a quick clamping mechanism (4) is installed on the supporting plate (3), a driving rod (5) of the quick clamping mechanism (4) is connected with a connecting plate (6) capable of performing parallel movement with the flange positioning panel (2) under the driving effect of the driving rod, an exhaust pipe positioning pin (7) capable of penetrating an exhaust pipe positioning hole of the flange positioning panel (2) is installed at the middle position of the connecting plate (6), two sides of the connecting plate (6) are respectively provided with one press claw pushing block (8), press claws (9) are installed on the flange positioning panel (2) in a pivoted mode, and the diving ends of the press claws (9) are in hinged connection with the press claw pushing blocks (8). The clamping mechanism for welding the automobile exhaust pipe end flange is simple in structure and high in welding efficiency.