583results about How to "Large section" patented technology

A catheter for diagnosis or treatment of a vessel or organ is provided in which a flexible elongated body includes a tri-axial force sensor formed of a housing and a plurality of optical fibers associated with the housing that measure changes in the intensity of light reflected from the lateral surfaces of the housing resulting from deformation caused by forces applied to a distal extremity of the housing. A controller receives an output of the optical fibers and computes a multi-dimensional force vector corresponding to the contact force.

Guides for intubation which simultaneously transport fluids and light into a body site are tube-like in structure and consist of a hollow cylindrical optical core surrounded on its inner and outer walls by a cladding of lower index of refraction. Materials comprising the optical core are selected such that the optical absorption and scatter are sufficiently small to transport light efficiently over an extended distance as fluid is transferred through the tube interior. Methods of fabrication, light coupling and light delivery using waveguide tubes are disclosed. Particular applications of waveguide tubes in the medical and industrial sectors are described.

In a surgical instrument for applying C-shaped ligating clips having two juxtaposed legs which are joined to each other by a bridge portion and are each divided by a longitudinal slot into two juxtaposed portions joined to each other at the free end of the legs, the surgical instrument comprising two juxtaposed clamping jaws with guiding surfaces facing each other for the legs of a ligating clip that lie against the guiding surfaces when the ligating clip is inserted between the clamping jaws, in order to improve the positioning of the ligating clip between the clamping jaws, it is proposed that there be arranged on at least one of the guiding surfaces of the clamping jaws an inwardly protruding projection which, when the ligating clip is advanced along the guiding surfaces, elastically enters the longitudinal slot of the ligating clip.

In a surgical instrument for applying C-shaped ligating clips having two juxtaposed legs which are joined to each other by a bridge portion and are each divided by a longitudinal slot into two juxtaposed portions joined to each other at the free end of the legs, the surgical instrument comprising two juxtaposed clamping jaws with guiding surfaces facing each other for the legs of a ligating clip that lie against the guiding surfaces when the ligating clip is inserted between the clamping jaws, in order to improve the positioning of the ligating clip between the clamping jaws, it is proposed that there be arranged on at least one of the guiding surfaces of the clamping jaws an inwardly protruding projection which, when the ligating clip is advanced along the guiding surfaces, elastically enters the longitudinal slot of the ligating clip.

The present invention describes microfluidic devices that provide novel fluidic structures to facilitate the separation of fluids into isolated, pico-liter sized compartments for performing multiplexing chemical and biological reactions. Applications of the novel devices including biomolecule synthesis, polynucleotide amplification, and binding assays are also disclosed.

A shutter for closing openings with pivotal shutter elements, the rotational axes of which are arranged parallel to each other. Better sealing is achieved in that the shutter elements consist of at least two wings that are solidly joined together and arranged almost parallel to each other. The wings of the shutter elements are oriented substantially parallel to an imaginary plane of the opening, thus closing it on both sides, in a first position and substantially normal to the plane of the opening, thus clearing said opening, in a second position.

A thick grease secondary lubricating pump device comprises a lubricating pump shell, a power assembly, a high-pressure plunger pump and an oil tank, wherein the power assembly and the high-pressure plunger pump driven by the power assembly are arranged on the lubricating pump shell; the oil tank is fixedly connected with the lubricating pump shell which is also provided with a low-pressure plunger pump driven by the power assembly; an oil suction port A of the low-pressure plunger pump is communicated with the oil tank, and an oil discharge port C of the low-pressure plunger pump is connectedwith an oil suction port B of the high-pressure plunger pump in a sealing way by a pipeline which is further connected with an energy storage device and an overflow valve; and an oil inlet and an oiloutlet of the energy storage device are respectively communicated with the oil discharge port C of the low-pressure plunger pump and the oil suction port B of the high-pressure plunger pump. By adopting the structure, the lower-pressure plunger pump with the section of a first-stage oil inlet being larger is added, enough grease is pressed into an oil inlet of the high-pressure plunger pump, and the mode that mainly depends on the oil suction of the oil inlet of high-pressure plunger pump is changed to the mode mainly depending on pressing the oil, so that the oil charging at the oil inlet ofthe high-pressure plunger pump is sufficient, the capacity of the pump for delivering the grease is enhanced, and the pump is capable of delivering the grease with high thickness even under low temperature and low pressure.

A retina implant including a chip adapted to be implanted into the interior of eye in subretinal contact with the retina. The chip has a plurality of pixel elements on a side thereof facing the lens for receiving an image projected into the retina and a plurality of electrodes for stimulating retina cells. The implants further includes a receiver coil for inductively coupling thereinto electromagnetic energy. The receiver coil coupled to a means for converting an alternating voltage induced into the receiver coil in a direct voltage suited for supplying the chip. The receiver coil is configured as a component separate from the chip, and for being positioned on the eye ball outside the sclera. The chip is connected to the receiver coil via a connecting lead which, in the implanted condition interconnects the interior and the exterior of the eye ball.

An outdoor microwave transceiver intrusion detector that alternately transmits pulses of RF energy at two different frequencies and uses range and direction of travel information derived from the phase of the two Doppler responses to optimize the signal processing and apply range dependent thresholds. The time delay between the onset of the transmitted pulse and the sample of the Doppler response is controlled to provide an accurate range cutoff. The two frequencies are selected so that the difference in phase of the Doppler response at the two frequencies increases from zero to ninety degrees as the target goes from the Transceiver to the maximum range. Digital signal processing is used to measure the difference in phase of the two Doppler responses and translate this information into location of the target. The location information is used to create a number of range bins. The response integration time and the threshold level are optimized for each of the range bins thereby minimizing the number of nuisance alarms.

The invention relates to the feeding of analyte ions, generated at atmospheric pressure, efficiently into the mass spectrometer. The invention provides a lengthy ion mobility drift tube with a focusing electric field inside to guide the ions from an ionization cloud generated at atmospheric pressure towards the entrance opening of the mass spectrometer, and to dry droplets which might occur in the ionization cloud by a hot drying gas flowing through the ion mobility drift tube towards the ionization cloud.

A device for ventilation, comprisinga ventilator for providing a stream of gas for ventilation at an outlet,a hose for inspiration air one end of which is connected to the outlet,a double-lumen endotracheal tube one lumen of which, at its end distal to the patient, is connected to the other end of the hose for inspiration air,flow meters for measuring the streams of gas in the two lumina of the endotracheal tube,pressometers for measuring the pressures at the ends distal to the patient of the two lumina,an evaluation means for determining the flow resistance in a lumen flowed through by gas because of the stream of gas measured therein and the pressures measured, anda means for outputting an information about the flow resistance of the lumina.

A sensor unit for use in sensing conditions in a pipeline comprises an untethered a ball-shaped surround adapted to roll along the interior surface of a pipeline, and instrument package within the ball-shaped surround. The package contains at least one magnetometer or accelerometer. Preferably, three magnetometers, arranged orthogonally, are present. Other sensors can also be present as required, such as an acoustic sensor to detect leaks and a temperature or chemical sensor. Recording means record the data acquired by the magnetometer(s) or accelerometer and the sensors, and optionally also record a timing trace.

An elastic space-deployable boom of carbon fiber reinforced plastic or other resilient material having an open substantially triangular cross-section when deployed and stowed with a flattened cross-section about a circular hub.

A low-voltage male connector designed to be plugged into a low-voltage female connector having a plurality of flexible pins serving to come into contact with the male connector so as to establish electrical contact between the male connector and the female connector, the male connector being provided with insulation-displacement contacts, each of which serves to receive a respective conductor wire, wherein the electrical connection between the flexible pins of the female connector and the insulation-displacement contacts is established by a printed circuit provided with conductor tracks, each of which connects a respective insulation-displacement contact to a respective pin.

The invention disclosed herein provides a subsonic wind tunnel capable for accurately maintaining a desired Mach number, pressure and temperature for use in aerothermal testing of materials. The invention allows the Mach number to be precisely controlled in the test section of the wind tunnel by employing a restricted outlet acting as a sonic throat for the wind tunnel. In the preferred embodiment, the restricted outlet is constructed to be variable in cross sectional area allowing a range of Mach numbers to be tested. The variable outlet is varied during the operation of the wind tunnel so that an actual trajectory with changing Mach numbers, pressure, and temperature is simulated.

The present invention facilitates the placement of laminations 10 onto keybars 6 of stator generators frames 2. Laminations need to be tightly fit onto keybars 6, however, the same need for tightness makes stacking laminations onto keybars particularly onerous. This is magnified when donuts, which are preassembled groups of laminations, are attempted to be stacked onto the keybars 6. The present invention provides for enlarged grooves 12 that more easily accept the keybars. This makes stacking laminations, both individually and in donuts, much easier. The laminations are then held in position by the insertion of a wedge 16. The wedge may be placed to disperse forces 20 transferred to the laminations in a circumferential manner 22.

A crush member for a vehicle having frame rails comprising a tube having a first end configured to be connected to the frame rails of the vehicle and a second end configured to be connected to a bumper. The tube has a constant thickness from the first end to the second end. The tube further has a taper along a axial direction from the first end to the second end, the tube having a larger cross section at the first end and a smaller cross section at the second end. The tube is configured to crush to absorb impact energy upon an axial or near axial load.

A thin-film magnetic head is constructed such that a main magnetic pole layer, a write shield layer, a gap layer, and a thin-film coil are laminated on a substrate. The thin-film magnetic head has a shield magnetic layer. The shield magnetic layer is connected to the main magnetic pole layer. The shield magnetic layer has a lower front shield part. A front end angle representing an angle formed between a front end face of the lower front shield part and a lower end face is set at an obtuse angle. The front end face is disposed in the medium-opposing surface. The lower end face is disposed at a position closest to the substrate in the lower front shield part.

A method for coupling a first system component and a second system component of a coordinate measuring device for determining by means of at least one sensor the three-dimensional coordinates of an object to be measured. An interface arrangement is provided between the first system component and the second system component. The interface arrangement comprises an electrical interface, formed from at least two electrical transmission paths, for transmitting a first electrical voltage between the first system component and the second system component, and at least one optical interface formed from light waveguides. The at least one sensor is supplied with the first electrical voltage via the two electrical transmission paths of the electrical interface. An analog measurement signal from the sensor is converted into a digital measurement signal. The digital measurement signal is transmitted by means of the light waveguides of the optical interface.

A time-variable magnetic fields generator for a magnetic resonance apparatus has at least one gradient coil with conductors extending essentially in the region of a subject-receiving hollow opening of the magnetic resonance apparatus, and that is free of conductors in a middle axial region of the hollow opening, a first radio-frequency shield that encloses the conductors disposed on the one side of the middle region, a second radio-frequency shield that encloses the conductors disposed on the other side of the middle region, a radio-frequency antenna element that emits a radio-frequency field, disposed between the first and second radio-frequency shield in the middle region, a third radio-frequency shield proceeding radially, externally around the antenna element, such that the radio-frequency shields delimit a field return space within the generator and that is designed for a return of the radio-frequency field.

A power tool includes an annular recess adapted to be defined in the peripheral edge to receive therein a resilient loop, a slot adapted to be defined in a side face of the peripheral edge and a hole defined in a side face defining the slot to communicate with the annular recess so as to movably receive therein a ball such that engagement between the resilient loop and a first auxiliary tool mounted outside the driving end is secured because of engagement of the resilient loop to an inner face of the auxiliary tool.

A tooth brush holder having a base plate, a rotating cover, and a receptacle therein for receiving a tooth brush. The cover has at least one opening in alignment with the receptacle. The base plate includes facilities for closing the receptacle when the tooth brush is removed so that the user cannot replace the tooth brush until a predetermined time has elapsed.

In a motor vehicle seat for a closed motor vehicle, an air supply device is provided for supplying the head, neck and shoulder region of the seat occupant with warm air that can emerge via an air discharge opening on that side of the backrest which faces the seat occupant. In order to surround the head, neck and shoulder region of the seat occupant with a draft-free and inconspicuous air cushion or air space, an air discharge opening that extends at least over approximately one third of the width of the backrest of the vehicle seat is provided.

A laryngoscope insertion section comprising a tube guide comprising at least an inferior tube guiding member and a superior tube guiding member, wherein the thickness of the insertion section in a first region is less than the external diameter of the largest diameter endotracheal tube in an operating range of endotracheal tube sizes plus the thickness of the inferior tube guiding member plus the thickness of the superior tube guiding member. Typically, the insertion section comprises an elongate member and the tube guide is lateral of the elongate member. Typically, an endotracheal tube is retained within the tube guide in flexural tension.