206 results about "Helical coil" patented technology

A tissue resection apparatus is provided which includes an outer tube with a helical coil disposed on a distal end. The coil is provided with a first electrode. A central tube has a distal edge profile comprising one or more surface segments. One of the surface segments includes a second electrode. The central tube is slidably disposed within the outer tube and positioned such that second electrode opposes at least a portion of the first electrode. A cutting tube is slidably disposed within the central tube and includes a cutting edge.

A neurovascular catheter is provided, such as for distal neurovascular access or aspiration. The catheter includes an elongate flexible tubular body, having a proximal end, a distal end and a side wall defining a central lumen. The side wall includes a tubular inner liner, a tie layer separated from the central lumen by the inner liner, a helical coil at least partially overlapping the tie layer, and a tubular braid. A first section of adjacent windings of the helical coil can be spaced farther apart from each other than a second section of adjacent windings of the helical coil.

An unmanned aerial vehicle (UAV) 1002 to inspect and monitor electrical power transmission lines including measurement of S- parameters of a magnetic field to determine the permittivity of a medium, e

A steerable arm for use in an endoscopic surgical procedure. The steerable arm is cut from a nitinol tube to provide flexibility and elasticity by a structure formed by cutting the tube. Typically, the cut tube includes a helical coil whose annuluses contact at one lateral side of the tube and the tube bends to separate the annuluses at the other lateral side. The material from which the tube is made is capable of maintaining memory for bending. This provides bias for restoring the tube to a bent state whenever the force causing the tube to bend is removed.

An endoscopic tissue grasper device includes a flexible tubular member, a flexible shaft extending through the tubular member, a proximal handle for moving the shaft and tubular member relative to each other, and a distal helical coil having a sharpened end for engaging tissue. The tissue grasper is advanced through a working channel of an endoscope, engaged relative to tissue, and retracted to pull tissue into a path of a movable needle coupled at a distal end of the endoscope so that the needle can be passed through the tissue. The needle is preferably provided with a suture so that as the needle is passed through the tissue a stitch is formed.

An apparatus for supplying clean fluid to a component in a well may include a filter. The filter may include a housing having an outlet, a conical permeable element disposed at least partially inside the housing, and a tapered helical coil disposed at least partially inside the permeable element. A first opening may be formed at a first axial end of the permeable element, and a second opening may be formed at a second axial end of the permeable element. The apparatus may further include first conduit fluidly coupling the outlet and the component, and a second conduit fluidly coupling the second opening and a tubular of the well.

A radio-frequency module includes a module substrate, an inductor, and an acoustic wave filter. The inductor overlaps at least a portion of the acoustic wave filter when seen in a plan view from the normal direction of the module substrate. The inductor includes first and second coils connected in series. Each of the first and second coils is a spiral or helical coil that is wound with more than one turn. At least a portion of the first coil overlaps the second coil when seen in a plan view from the normal direction of the module substrate. A direction of a magnetic field generated by the first coil is opposite to a direction of a magnetic field generated by the second coil.

A valve for repair of a regurgitant orifice between an atrium and a ventricle in a heart is disclosed. The valve includes a frame comprising a helical coil having at least two turns and defining a central opening. One or more leaflets are attached to the helical coil and extend into the central opening. When the valve is implanted, the valve is configured to clamp native leaflet tissue of the heart between adjacent turns of the helical coil. Also disclosed is a surgical kit including the valve and a method of delivering the valve to a heart.

A communication system is disclosed that features a computing device, a radiating element coupled to the computing device and including a primary helical coil, a secondary helical coil positioned within the primary helical coil, one or more inductor coils that are free to rotate positioned within the secondary helical coil, an optohelical antenna, a central core positioned within the one or more inductor coils, one or more central core coils positioned within the central core, and a central core cavity positioned within the one or more central core coils, in which the central core cavity includes a plasma and / or a gain medium which exhibits magnetic resonance, spontaneous emission, stimulated emission, and / or absorption. The communication system includes a signal injection circuit, a signal detection circuit communicatively coupled to the computing device, and a control module communicatively coupled to the computing device to determine a mode of a transceiver module.

A catheter is provided comprising localized regions of modified flexibility. The regions of modified flexibility may comprise a softened inner liner, for example softened via stretching the inner liner or disposing a plurality of holes in the inner liner, to modify the bending stiffness and / or tensile stiffness of the catheter. The catheter may further include an axially extending filament that at least partially overlaps the softened portion of the inner liner. The axially extending filament may include an anchoring section to anchor the at least one axially extending filament in a section of the catheter that includes the helical coil.

The invention discloses a field-grinding direct-current modulation and coil induction integrated MEMS electric field sensor, and the sensor comprises a spiral coil induction electrode which is disposed on an SOI substrate, and converts the periodic change of an alternating-current electric field into a first signal; the comb tooth electrode structure is fixedly arranged on the SOI substrate and comprises a piezoelectric driving structure, at least two movable shielding electrodes and at least two fixed induction electrodes, and the piezoelectric driving structure is fixedly connected with the SOI substrate; the movable shielding electrode is elastically connected with the piezoelectric driving structure and generates periodic vertical displacement under the driving of the piezoelectric driving structure; the fixed induction electrode and the movable shielding electrode are correspondingly arranged to form an electrode group, and the low-frequency alternating-current and direct-current electric fields are modulated and converted into second signals. The invention has the beneficial effects that the full-band measurement of direct-current, low-frequency and high-frequency signals is realized, the measurement frequency range of the sensor is widened, the processing difficulty and the manufacturing cost are reduced, and the production efficiency is improved.

An anti-sweeping hook includes a display hook, a helical coil, and a rotating handle. The display hook may be substantially straight and has a first end and a second end opposite the first end. The helical coil is disposed about the display hook and extends along a lengthwise portion of the display hook. The helical coil has a first coil end proximate the first end of the display hook. Rotation of the helical coil in a first direction loads the retail merchandise onto the display hook. Rotation of the helical coil in a second direction opposite the first direction removes the retail merchandise from the display hook. The rotating handle is configured to determine a change in an amount of stored inventory based on the amount and direction of rotation of the rotating handle.

To provide a tracker apparatus that causes little invasion to a patient, has excellent safety, can be firmly fixed to a pelvis of the patient, can be easily removed after a surgical operation, and causes little invasion remaining in skin or bone after removal.SOLUTION: A tracker apparatus constituting a navigation system used when performing an orthopedic surgical operation comprises: a tracker unit (110) having optical markers (111) to (114); and a fixing member (120) for fixing the tracker unit (110) to a pelvis of a patient, wherein the fixing member (120) includes a helical coil having a pointed end portion (121).SELECTED DRAWING: Figure 1A

The invention provides a manufacturing method of a narrow-spacing coil. The manufacturing method comprises the following steps: S1, preparing a full-page double-sided multi-circle coil; s2, carrying out insulation treatment on the whole double-sided multi-circle coil; s3, the first face of the full-page double-face multi-circle coil obtained after insulation treatment is attached to a bearing plate, the full-page double-face multi-circle coil and the bearing plate are placed in a vacuum bag, vacuumizing treatment is conducted, and a primary pressed assembly is formed; s4, the primary pressed assembly is put into the hydraulic cavity, and the hydraulic cavity is pressurized for the first time; s5, stopping pressurizing after pressurizing for the first time to a preset time length; s6, the primary pressed assembly is taken out, the vacuum bag is opened, the full-page double-face multi-circle coil is turned over till the second face is attached to the bearing plate, the full-page double-face multi-circle coil and the bearing plate are placed in the vacuum bag, vacuumizing treatment is conducted, and a secondary pressed assembly is formed; and S7, the secondary pressed assembly is put into the hydraulic cavity, the hydraulic cavity is pressurized for the second time, and pressurization is stopped after the preset duration. According to the method, a full-page coil with wide line spacing obtained through wet etching is pressurized twice, so that the coil extends towards the direction of the line spacing, the line spacing is reduced, and a more dense spiral coil is obtained.

The application discloses a microbial feed fermentation equipment and belongs to the technical field of feed processing. The equipment comprises a fermentation bin, a lifting and sliding assembly, a vibration and fluffing assembly, a bottom material gathering and turning assembly and a gas circulation and temperature adjusting assembly. The lifting and sliding assembly comprises a material guiding cylinder and a guiding seat, and a helical coil and a permanent magnet are cooperated to drive the guiding seat to move longitudinally. The vibration and fluffing assembly is arranged on the top of the bin, and a telescopic pipe, a connecting frame, a spring plate and a vibration frame are sequentially assembled, and airflow impact eccentric impellers are used to realize material vibration and fluffing. An arc-shaped collecting plate at the bottom of the bin can collect materials to turn up and down along the material guiding cylinder. A circulating pipeline is connected with the telescopic pipe and a gas outlet at the top of the bin, a pump body, a water cooling assembly and a heating assembly are arranged on the pipeline to realize closed loop temperature adjustment of the gas in the bin, and the gas circulation is linked with the material turning mechanism. The application can realize longitudinal material turning to eliminate stratification, airflow synchronous temperature adjustment and fluffing, uniform internal material temperature, stable closed anaerobic environment, adaptation to various feed fermentation, good fermentation effect and low energy consumption.

The application provides a semiconductor process equipment, which comprises a process chamber, an upper radio frequency source, a radio frequency coil structure and a coil grounding device, wherein the process chamber comprises a process cavity and a dielectric cavity, the dielectric cavity is located above the process cavity, and the dielectric cavity is sealingly connected with the process cavity; the inner diameter of the dielectric cavity increases from top to bottom; the radio frequency coil structure comprises a three-dimensional helical coil, the three-dimensional helical coil surrounds the dielectric cavity, the inner diameter of the three-dimensional helical coil increases from top to bottom, and both ends of the three-dimensional helical coil are electrically connected with the upper radio frequency source; the coil grounding device is electrically connected with the three-dimensional helical coil in a position-adjustable mode, the three-dimensional helical coil is grounded through the coil grounding device, and the grounding position is located between the two ends of the three-dimensional helical coil. The semiconductor process equipment provided by the application can improve the uniformity of plasma distribution.

The invention discloses an intelligent artificial heart valve integrated with pressure sensing, which comprises an implantation end and a body surface relay patch, the implantation end comprises a stent valve main body, a valve crossing pressure sensor pair, a microelectronic module and a flexible circuit, and the stent valve main body comprises a valve frame and a valve leaflet. The transvalvular pressure sensor pair comprises a first pressure sensor fixed to the ventricular proximal side of the stent valve body and a second pressure sensor fixed to the ventricular distal side of the stent valve body, leads of the pressure sensors are electrically connected with the microelectronic module through a flexible circuit, and the flexible circuit comprises a planar spiral coil; the plane spiral coil is electrically connected with the microelectronic module, the body surface relay patch comprises an external read-write coil, the external read-write coil transmits energy to the plane spiral coil, and the cross-lobe pressure sensor sends sensed data to the external read-write coil through the plane spiral coil. According to the invention, abnormal early warning can be realized, the treatment lagging is shortened, and the complication cost is reduced.

A wireless power transmission coil comprising a first helical coil portion, a first spiral coil portion, a second helical coil portion, a second spiral coil portion, and a third helical coil portion which comprise windings with a common central axis. The inner end of the first spiral coil portion is connected to the upper end of the first helical coil portion. The upper end of the second helical coil portion is connected to the outer end of the first spiral coil portion. The inner end of the second spiral coil portion is connected to the lower end of the first helical coil portion. The lower end of the third helical coil portion is connected to the outer end of the second spiral coil portion. In this way, imbalance in winding currents of the coil is eliminated to reduce alternating-current resistance of the coil.

To provide an inductor that can improve Q characteristics.SOLUTION: An inductor 11 comprises a component main body 12 having a laminate structure in which a plurality of non-conductive material layers 19 is laminated, where a plurality of line conductors 23 and a plurality of via conductors 24 are provided inside the component main body 12. The line conductor 23 has a spiral coil 20 which has pad parts 25 that are connected to the via conductors 24 and a line arrangement part 30 that is connected to the pad parts 25, which is alternately connected with the line conductor 23 and the via conductor 24. The via conductor 24 includes a longitudinal via conductor 24 in a longitudinal shape extending along the line conductor 23. The pad part 25 includes a longitudinal pad part 25 connected to the longitudinal via conductor 24, where the dimension in a width direction of the pad part is larger than the dimension in the width direction of the line arrangement part 30. When seen through in an axial direction of the coli 20, the center position in the width direction of the longitudinal pad part 25 is shifted from the center position in the width direction of the line arrangement part 30 toward at least either of an inner periphery side and an outer periphery side of a spiral trajectory.SELECTED DRAWING: Figure 2

An electrical connector assembly includes an electrical receptacle terminal configured to receive a corresponding electrical plug terminal therein. The electrical receptacle terminal has a helical coil spring. The electrical connector assembly further includes a cable terminal attached to an end of a conductor of an electrical cable. The coil spring is in compressive contact with the cable terminal.

The disclosed technology includes a magnetic positioning sensor that may include a first helical coil and a second helical coil, which may be disposed on a planar substrate. The first and second helical coils may be disposed about respective first and second central axes, wherein each of the first and second coils may be configured to generate a voltage when subjected to a magnetic field. The magnetic positioning sensor may also include a high permeability planar member that may be disposed proximate to one of the first and second helical coils. The high permeability planar member may be disposed on the magnetic positioning sensor such that the high permeability planar member may be disposed on an intersection of the first central axis and the second central axis with the planar substrate wrapped around a cylindrical substrate.

The invention belongs to the technical field of biosensing, and particularly relates to an implantable wireless passive chemical sensor system as well as a preparation method and application thereof. The sensor system comprises a miniature implantable sensor unit and a wearable relay coil network used for signal integration. Wherein the miniature implantable sensor unit adopts a three-module integrated framework, namely, the miniature implantable sensor unit comprises a chemical sensing module consisting of a miniature sensing electrode pair with potential response, a signal modulation module consisting of a variable capacitance diode pair which is connected back to back, and a wireless transmission module consisting of a spiral coil; the wearable relay network is a conductive coil network formed by embroidering a conductive wire or depositing and printing a conductive material on a flexible fabric substrate and patterning, and is used for realizing collaborative acquisition of chemical signals of multiple sensors; the system can synchronously monitor various biochemical indexes such as glucose, electrolyte, neurotransmitter and the like in body fluid and biological tissues in real time, and has important application value in the fields of wearable medical monitoring and implantable diagnosis.

A plasma generator may include a dielectric tube, an inner helical coil surrounding the dielectric tube and configured to generate plasma by forming a stationary wave of at least one of a magnetic field and an electromagnetic wave in the dielectric tube, a variable capacitor configuring a closed loop with the inner helical coil, an outer helical coil surrounding the inner helical coil and magnetically coupled to the inner helical coil, and a radio frequency (RF) power supply configured to provide RF power at a variable frequency to the inner helical coil.

A fluid analysis system includes a fluid circuit and a foam generator positioned along the fluid circuit. The foam generator is configured to receive a gas and a viscous fluid to produce a fluid mixture. The fluid analysis system further includes a helical coil positioned along the fluid circuit downstream of the foam generator and configured to receive the fluid mixture. The fluid analysis system further includes one or more processors for determining a foam rheology of the fluid mixture after the fluid mixture flows through the helical coil.

A conveying device is provided for a pasty food product such as meat or pasta products. The conveying device includes a housing having a food inlet and a food outlet and a conveying chamber, a first conveying screw rotatably arranged in the conveying chamber and a second conveying screw rotatably arranged in the conveying chamber. The first and the second conveying screws are arranged with their axes of rotation substantially parallel with each other and have intermeshing helical coils. The pitch of the coils of the conveying screws becomes continuously smaller in at least one section between the inlet and the outlet, thereby to precisely portion the food product while avoiding smearing or gas bubble formations.

This application relates to the field of transformer technology, specifically to a chip transformer and power module, including a ceramic substrate; the ceramic substrate includes a plurality of stacked ceramic diaphragms; conductive posts are provided on the ceramic diaphragms, the conductive posts extending perpendicularly to the ceramic diaphragms; helical coils are provided on the surface of the ceramic diaphragms, and the ends of adjacent helical coils are connected through the conductive posts; at least two helical coils are connected through the conductive posts to form a coil winding. The embodiments of this application can significantly increase the number of turns in the winding by using planar helical coils, effectively improving the inductance value and enhancing the coupling coefficient between the primary and secondary coils while achieving a miniaturized integrated design.

A magnetic resonance imaging system includes a bore, a table configured to support a patient being imaged and movable to move the patient in and out of the bore, a motion sensor, a controller configured to detect patient motion based on changes in an RF signal from the motion sensor. The motion sensor includes a self-resonant spiral (SRS) coil excited by a drive signal to radiate a magnetic field having a predefined resonant frequency and a driver-receiver coupled to the SRS coil and configured to generate the drive signal to excite the SRS coil and to receive the RF signal from the SRS coil. The motion sensor is located such that a portion of the patient is within the magnetic field while the patient is being imaged in the bore.

A magnetic field detection apparatus includes a magnetoresistive effect element and a helical coil. The magnetoresistive effect element includes a magnetoresistive effect film extending in a first axis direction. The helical coil includes a parallel connection including first and second parts extending in a second axis direction inclined with respect to the first axis direction. The first and second parts are adjacent to each other in a third axis direction and coupled to each other in parallel. The helical coil is wound around the magnetoresistive effect element while extending along the third axis direction. The magnetoresistive effect film overlaps the first and second parts in a fourth axis direction orthogonal to the second and third axis directions. The helical coil is configured to be supplied with a current and thereby configured to generate an induction magnetic field to be applied to the magnetoresistive effect film in the third axis direction.

The invention belongs to the technical field of flexible hybrid electronics, and relates to a wireless passive sensing yarn based on multiple normal mode helical antennas and a preparation method thereof.The sensing yarn comprises a core yarn, a radio frequency chip and a sensing yarn antenna, the sensing yarn antenna is a whole formed by the multiple normal mode helical antennas spirally wrapping the core yarn, and the radio frequency chip is arranged on the core yarn; the plurality of normal mode helical antennas comprise a first conductor, a second conductor, a newly added third conductor and a newly added fourth conductor, and the first conductor, the radio frequency chip and the second conductor are connected in sequence; the third conductor forms a spiral coil in each spiral coil gap of the first conductor, and the fourth conductor forms a spiral coil in each spiral coil gap of the second conductor; the third conductor and the first conductor are not contacted, and the fourth conductor and the second conductor are not contacted. The impedance matching between the radio frequency chip and the sensing yarn antenna is good. The preparation method adopts a wrapping process. The sensing performance of the sensing yarn is stable, and the structure of the sensing yarn is miniaturized.

A support ring for an aortic prosthesis includes a helical coil extending in an arc and defining a space between a helical coil first end and helical coil second end in opposing relation to each other. A wire extending through the lumen defined by the helical coil includes a wire first end and a wire second end that are fixed to each other, and a length between the wire first end and the wire second end that traverses the space between helical coil first end and the helical coil second end. A branch sleeve assembly includes a graft sleeve having a proximal end that defines a plane that intersects a plane defined by the distal end of the graft sleeve, and a support ring fixed to the graft sleeve wall that is closer to the proximal end of the graft sleeve than to the graft sleeve distal end.