2023 results about "External pressure" patented technology

Lung volume reduction is performed in a minimally invasive manner by isolating a lung tissue segment, optionally reducing gas flow obstructions within the segment, and aspirating the segment to cause the segment to at least partially collapse. Further optionally, external pressure may be applied on the segment to assist in complete collapse. Reduction of gas flow obstructions may be achieved in a variety of ways, including over inflation of the lung, introduction of mucolytic or dilation agents, application of vibrational energy, induction of absorption atelectasis, or the like. Optionally, diagnostic procedures on the isolated lung segment may be performed, typically using the same isolation/access catheter.

A composite wound dressing apparatus promotes healing of a wound via the use of a micropump system. The micropump system includes a micropump that applies a subatmospheric pressure to the wound to effectively draw wound fluid or exudate away from the wound bed, or deliver fluids to the wound bed, without the need for a cumbersome external pressure (e.g. vacuum) source. Hence, the wound dressing and micropump system is portable which allows the patient mobility that is unavailable when an external vacuum source is used.

A radio operated data card whose outer jacket forms a sealed protected housing for internal electrical components, including an RFID integrated circuit which incorporates data storage and a radio frequency transceiver, an on card antenna, and manually operated, normally open electrical switch contacts connected between the on-card electronic circuitry and the antenna. The open switch contacts normally disable the card, protecting the data on the card from being surreptitiously read until the switch contacts are intentionally closed by the cardholder to enable data transfer to occur. The cardholder may activate the card by applying external pressure to the surface of the card at a predetermined position, closing the switch contacts which open again automatically when pressure is removed. A tactile indicia on the surface of the card allows the cardholder to determine by touch where the card should be pressed to enable data transfers to occur. In an alternate embodiment, a mating key in the possession of the cardholder may be brought into proximity with the card to close the normally open switch to permit information to be read from the card.

A touch screen display apparatus and a method of driving the same in which the touch screen display apparatus includes a first transparent substrate, a gate line and a sensor conductor formed on the first transparent substrate, a data line insulated from and intersecting the gate line and sensor conductor, a second transparent substrate facing the first transparent substrate, and a sensor electrode formed on the second transparent substrate so as to correspond to an intersection of the sensor conductor and the data line, the sensor electrode electrically connecting the sensor conductor with the data line when acted upon by an external pressure.

This invention relates to improved absorbent structures containing improved water-swellable material that can significantly withstand deformation by an external pressure, thus showing improved liquid handling properties. In particular, this invention relates to absorbent structures comprising water-swellable material with an improved absorbent capacity/permeability balance. The water-swellable material is typically in the form of particles, which comprise a core of water-swellable polymer(s) and a shell of said elastomeric polymer(s), preferably selected polyetherpolyurethanes, whereby the water-swellable material is such that it can withstand deformation due to external pressure. The invention also relates to diapers, adult incontinence articles and sanitary napkins comprising said absorbent structure of the invention.

The present invention relates to a system and garment that incorporates sensors that can be used for measuring or monitoring pressure or forces in feet, the stumps of limbs of an amputee that are fitted with prosthetic devices, or any other parts of the body that are subject to forces such as the buttock while seated or when external pressure inducing devices are employed, such as for example, pressure bandages. The invention also relates to a method to monitor or diagnose any foot or limb related activity for recreational, sporting, military or medical reasons and is particularly aimed at the treatment of neuropathic or other degenerating conditions.

In a display apparatus, a display panel includes touch sensors that make contact with a common electrode by an external pressure to output a common voltage, and a sensing driver receives the common voltage from the touch sensors to generate a sensing signal. A controller receives the sensing signal from the sensing driver and calculates position information to which the external pressure is applied based on the sensing signal. The sensing driver includes a switching circuit that receives a switching signal from the controller to switch the common voltage. Thus, the display apparatus prevents the common voltage from being input during a period where a voltage level of the common voltage is abnormally high, thereby preventing a logic circuit of the sensing driver from being damaged.

It is the object to provide a production process of monodisperse particle in which monodisperse particle with uniform particle size (particle diameter) can be stably mass-produced, and monodisperse particle produced by this process, and its production apparatus. The supply pipe diameter deltaf is set to be greater than the orifice diameter deltao and the internal and external pressure of the slurry retention part b is controlled, and this allows to facilitate supply of the slurry through the supply pipe (21c), and continuously and efficiently supply the slurry, and then to produce monodisperse particle with uniform particle size (particle diameter).

A display device of active matrix driving type has a plurality of pixel regions arranged in a plane, each of the pixel regions including a selection switching element that controllably switches a supply of a signal to the each of the pixel regions, a pressure sensitive switching element that controllably switches a supply of a signal to the each of the pixel regions in response to an input of an external pressure, and a retention capacitance that retains a signal supplied to the each of the pixel regions, wherein the pressure sensitive switching element includes a semiconductor layer having a channel region, and a piezoelectric film laminated on the channel region, and the retention capacitance includes a pair of capacitance electrodes and a ferroelectric film sandwiched between the pair of capacitance electrodes.

Provided is a radial arterial pulse sensing apparatus for noninvasive and continuous measurement of blood pressure and arterial elasticity. The apparatus includes two pressure sensor for detecting radial arterial pulses, two cuffs that are disposed under the respective pressure sensors and expandable by application of external pressure, a motor unit for providing proper pressure to expandable pouches under the respective pressure sensors in a state where a wrist band having the pressure sensors is put on a wrist, a pulse wave velocity calculating unit that calculates a pulse wave transfer velocity to attain a blood pressure value using an output from the pressure sensors, and an augmentation index calculating unit that estimates the blood pressure value by finding a time point of a reflective wave of the pulses using the outputs from the pressure sensors.

A method and apparatus for formation testing is disclosed. In a preferred embodiment, a formation testing tool includes a longitudinal body with a flowbore; a plurality of extendable centralizing pistons coupled to the body; an extendable sample device coupled to the body; and a centralizing hydraulic circuit configured to cause each of the plurality of centralizing pistons to extend at substantially the same rate. The centralizing hydraulic circuit includes a series of flow control and pressure-determining valves configured to extend the centralizing pistons at substantially the same rate, and to help maintain stability in the hydraulic circuit in response to external pressures. In some embodiments, the extendable sample device is preferably configured to be recessed beneath a surface of the body in a first position and to extend beyond the surface in a second position. The extendable sample device is preferably extended to contact the borehole wall substantially normal to the wall, protecting the sample device from excessive bending moments and other excessive forces.

PCT No. PCT/FR95/01609 Sec. 371 Date Jun. 6, 1997 Sec. 102(e) Date Jun. 6, 1997 PCT Filed Dec. 6, 1995 PCT Pub. No. WO96/18040 PCT Pub. Date Jun. 13, 1996The invention relates to a heterogeneous structure for energy accumulation-dissipation (10), the structure being constituted by a porous capillary solid matrix (11) of open capillary porosity and of controlled topology, with capillary passages (12) of varying section and/or mutually interconnected to form labyrinths, and by a liquid (13) surrounding the porous capillary matrix and defining a liquid/solid separation surface, with the matrix (11) being lyophobic relative to said liquid. The area of the separation surface then varies isothermally and reversibly as a function of the external pressure to which the heterogeneous structure (10) is subjected.

An electro-optical device, which has a display area and a plurality of sensing areas for detecting capacitance in the display area, includes a black matrix that is provided in the vicinities of display pixels in the display area, pixel electrodes that individually form the display pixels, a common electrode, a liquid crystal layer that is interposed between the pixel electrodes and the common electrode, a plurality of pixel circuits that individually drive the pixel electrodes, a capacitance detection element that is provided in a corresponding one of the sensing areas to convert a change in thickness of the liquid crystal layer caused by external pressure into a change in capacitance, and a sensing circuit that outputs a sensing signal on the basis of the change in capacitance obtained by the capacitance detection element. The capacitance detection element overlaps the black matrix in plan view.

A touch-sensitive liquid crystal display (LCD) device includes a first substrate, a second substrate opposite to the first substrate, and a liquid crystal layer sandwiched between the first and second substrates. A first sensing line, a second sensing line, a reference capacitor, and a variable capacitor connected with the reference capacitor in series are arranged on the first substrate. A node between the reference capacitor and the variable capacitor is couple to the first and second sensing lines. A capacitance of the variable capacitor is changeable when acted upon an external pressure.

An intra-ventricular pressure sensor device is provided that includes a catheter having a first lumen for receiving fluid flow therethrough, and a second, separate, fluid-filled, fluid-impermeable lumen extending between a pressure-sensitive component that is adapted to be exposed to an external pressure source, and a pressure sensor that is effective to measure pressure of the external pressure source in response to displacement of the pressure-sensitive component. The intra-ventricular pressure sensor device is particularly advantageous in that it allows a direct measurement of a patient's ventricular pressure to be obtained.

The invention provides an electric pressure cooker which comprises a control circuit, a cooker, an upper lid, a lid, a pressure limiting valve and a driving component. The upper lid is positioned on the upper side of the cooker and is mounted on the cooker in such a manner that the upper lid can be opened and closed; the lid is positioned between the upper lid and the cooker, is rotatably mounted on the upper lid and is rotationally fastened and connected with the cooker; a through hole is formed in the upper lid, an exhaust pipe on the lid extends out of the through hole, and the pressure limiting valve sleeves the exhaust pipe; the driving component is positioned on a side of the exhaust pipe, is mounted on the upper lid and is electrically connected with the control circuit; a slip lift structure is arranged between the pressure limiting valve and the lid, and a matching portion is arranged on the pressure limiting valve. Compared with the traditional electric pressure cooker, the electric pressure cooker has the advantages that the lid is easy to open and close, the problem of difficulty in closing an existing lid due to the fact that internal pressures of an existing electric pressure cooker are higher than external pressures can be solved, and problems of cooker sucking and difficulty in opening the existing lid due to the fact that the internal pressures of the existing electric pressure cooker are lower than the external pressures also can be solved, and the electric pressure cooker can have functions of automatically exhausting air and releasing pressures in cooking procedures.

A display apparatus includes a display panel including a first substrate, a second substrate opposed to the first substrate, and a touch sensor switch disposed in a display area that displays an image. The touch sensor switch includes a first touch electrode provided on a surface of the first substrate and a second touch electrode provided on a surface of the second substrate. The touch sensor switch has a structure in which the first and second touch electrodes are brought into contact when the display panel is deformed by an external pressure. The first substrate includes a convex portion that protrudes in a convex shape toward the second substrate. The convex portion has a top surface opposed to the second substrate and includes a flat area formed on the top surface. The first touch electrode is formed in the flat area on the convex portion as an isolated pattern.

The invention discloses a shutter-blind-cavity-and-external-pressure-balanced dual-control hollow-glass built-in shutter. The shutter-blind-cavity-and-external-pressure-balanced dual-control hollow-glass built-in shutter comprises a shutter body, an inner frame, a curtain-sheet-overturning-pulling-rope inner control mechanism, a curtain-sheet-overturning-pulling-rope outer control mechanism, a shutter-blind-lifting-pulling-rope inner control mechanism, a shutter-blind-lifting-pulling-rope outer control mechanism, a curtain-sheet-overturning executing mechanism, a shutter blind and a curtain-sheet overturning pulling rope, wherein the shutter body comprises an upper transverse frame pipe, a lower transverse frame pipe, a left longitudinal frame pipe, a right longitudinal frame pipe, inner glass and outer glass; the inner frame comprises an upper transverse frame strip, a left longitudinal frame strip and a right longitudinal frame strip. The shutter-blind-cavity-and-external-pressure-balanced dual-control hollow-glass built-in shutter is characterized in that upper-transverse-frame-pipe-cavity ventilating holes are formed in the upper-transverse-frame-pipe bottom wall, towards one side of a shutter blind cavity, of the upper transverse frame pipe, a balance-pipe-fixing-base embedded cavity is formed in the upward side of the left end of an upper-left-rotating-corner-inserting-block transverse inserting arm, a balance-pipe fixing base is arranged at the portion corresponding to the balance-pipe-fixing-base embedded cavity, a pair of balance pipes are fixedly inserted onto thebalance-pipe fixing base, the left ends of the pair of balance pipes extend out of the left end face of the upper-left-rotating-corner-inserting-block transverse inserting arm and penetrates througha sealing rubber strip to be communicated with the outside, and the right ends of the pair of balance pipes extend into an upper transverse frame pipe cavity and are communicated with the upper transverse frame pipe cavity. Air pressure in a shutter blind cavity is same as air pressure of the outside.

An external counterpulsation apparatus and method for minimizing end diastolic pressure includes a fluid distribution assembly interconnecting a plurality of inflatable devices adapted to be received about the lower extremities of the patient and a source of compressed fluid to be distributed by the fluid distribution assembly to the inflatable devices. The controller in communication with the fluid distribution assembly controls inflation and deflation of the inflatable devices to minimize end diastolic pressure. The controller controls deflation of the inflatable devices without reducing venous return and then minimizes energy spent in ventricular isovolumetric contraction. Further, the controller controls inflation of the inflatable devices to inflate a distal inflatable device prior to inflating a proximal inflatable device. Further, the controller controls a plurality of inflation functions including rate of pressure applied, the magnitude of pressure applied, the duration of time that external pressure is applied, and the duration of time to deflate the inflatable devices.

A first aspect of the present invention is concerned with a double-helix electrode structure for sensing electrical activity of a patient's diaphragm, comprising first and second helical electrodes disposed in a double-helix arrangement for being positioned in the gastro-esophageal sphincter of the patient's diaphragm in view of sensing electrical activity of the patient's diaphragm. According to a second aspect, the present invention provides a pressure detection and acquisition device comprising a semiconductor substrate, a pressure sensor implemented on the semiconductor substrate and producing, when subjected to an external pressure, a pressure representative signal, and a signal acquisition and transmission circuit integrated to the semiconductor substrate, connected to the pressure sensor, and supplied with the pressure representative signal. Other aspects of the present invention relate to an EMG_di signal and pressure acquisition catheter.

A variable-sized, self-inflating and self-deflating intragastric balloon device, includes a hiocompatible polymer membrane formed into a balloon having inner and outer surfaces preferably coated with a wax, the balloon defining an interior lumen having an internal capsule freely floating within the lumen, the internal capsule having first and second chambers with a communicating one way valve therebetween. The first chamber is formed from a biocompatible polymer preferably coated with wax forming a gas and liquid tight housing to store a liquid solution therein, and the second chamber is composed of material capable of self dissolving or degrading in the presence of the liquid solution. Application of external pressure will transfer liquid from the first chamber through the valve into the second chamber where it will degrade the chamber and react with a solid reagent disposed within the lumen external to the capsule, forming a gas which inflates the balloon. A manufactured weakness within the membrane wall reacts chemically and/or physically causing a deflation of the balloon.

A microfluidic system is disclosed. The microfluidic system comprises a microchannel having in fluid communication with a fluid inlet for receiving a first fluid. The microfluidic system can further comprise a piezoelectric actuator which controls the flow of the first fluid in the microchannel by selectively applying external pressure on the wall of the microchannel.

A pressure-sensitive capacitive sensor is provided that can easily remove noises delivered from a human body. The capacitive sensor includes a sensor unit having a first substrate where a plurality of vertical wiring lines is formed and a second substrate where a plurality of horizontal wiring lines is formed, the first and second substrates being disposed in a matrix and facing each other with a gap interposed therebetween, and a capacitance at intersections between the vertical wiring lines and the horizontal wiring lines changed in response to an external pressure; and a detecting unit for detecting the change in capacitance at the intersections between the vertical wiring lines and the horizontal wiring lines, and detecting an externally applied pressure distribution based on the detecting result. In this case, a horizontal wiring line 50 for noise detection is disposed on a surface where the horizontal wiring lines are formed in the second substrate.

The object of this Patent is “Self-compensating drip emitter, with a one-way flow device”, which has a use as explained in the actual disclosure of the invention.

Its structure comprises a conventional dripper (1) inserted or installed in a pipe (2), with a self-compensating membrane (3) that regulates the flow in the chamber (4) for its discharge via the orifice (8), being provided with a filter cover (9) which supports the membrane (3).

Its essentiality lies in the use of a circular membrane (10) as a sealing diaphragm, which rests on a watertight fillet when the internal pressure in the pipe (2) is lower than the external pressure, while it rests on another stop (11) composed of retaining tabs when the pressures are inverted.

In an exhaust gas housing (1) of a thermal engine, a radially outer housing casing (9) and a radially inner housing casing (10) arranged on the hub side are connected to one another via at least one thermally insulated carrying rib (3) acted upon by a cooling medium. A carrying rib (3) has at least two passage ducts (7) and (8) for the cooling medium, at least one passage duct (7) possessing a cooling medium supply (6) and at least one passage duct (8) possessing a cooling medium outlet (12), and these passage ducts (7) and (8) being in communicating connection in the radially inner hub-side end region via a deflection duct (11). The cooling medium is led from an external pressure source (5) through the carrying rib (3) to the region of the deflecting duct (11) arranged on the hub-side casing (10) and from there through the carrying rib (3) back again into a collecting duct (15) which issues preferably into an annular duct (26) for cooling the exhaust gas housing flange (24).

A mechanical power transmission system for transforming and delivering power effectively and efficiently using external pressure to propel a vehicle. The mechanical power transmission system includes a case; rotational members; a gear set being in operable communication to at least one of the rotational members; and a clutch system being in operable communication to the gear set and using external fluid pressure from a fluid source to effectively change speeds.

The disclosure is generally directed to fabrication steps, and operation principles for microelectromechanical (MEMS) transducers. In one embodiment, the disclosure relates to a texture morphing device. The texture morphing device includes: a plurality of supports arranged on a substrate to support a deformable mirror; an ITO layer; and a Distributed Bragg Reflector (DBR) layer. A pair of adjacent supports form a cavity with the ITO layer and the deformable mirror. When the height of the cavity changes responsive to an external pressure, the internal reflection within the cavity is changed. The change in the height of the cavity causes the exterior texture to morph. Similar principles are disclosed for constructing sensor and actuators.

An air mattress is disclosed, which comprises an upper raw material member which has a coating layer at an upper surface of the same; a lower raw material which is spaced and installed at a lower side of the upper raw material member and has a coating layer at a lower surface of the same; a plurality of fiber threads which vertically connect the upper and lower raw material members and react with respect to an external pressure; a coated side raw material which is fixedly engaged to seal a surrounding portion between the upper and lower raw material members; and an air injection valve engaged at one side of the side raw material. A force distribution function is excellently performed when an external impact is applied to the air mattress according to the present invention, so that a distortion phenomenon of the product is prevented. It is possible to prevent the sides of the air mattress from being abnormally expanded by the side raw material bonded to the upper raw material member and the lower raw material member.

A method is provided for producing a powdered soluble foaming composition comprising amorphous particles having internal voids filled with atmospheric pressure gas. The method includes subjecting a spray-dried composition to an external pressure and heating the composition at a temperature below the glass transition temperature. The composition is depressurized to result in at least a portion of vacuous internal voids of the composition to be filled with atmospheric pressure gas.

In a method of noninvasive measurement of parameters of diastolic function of left ventricle and automated evaluation of the measured profile at rest and with exercise, a patient performs an isometric exercise. An external pressure sensor and heart sounds microphone are applied in a non-invasive manner on the thoracic wall to obtain a left ventricular pressure mirroring curve (pressocardiogram) and simultaneously the heart sounds (phonocardiogram). An external unit determines and calculates characteristic diastolic parameters derived from the pressocardiographic curve and phonocardiogram at rest, during and after exercise, converts each said pressocardiogram into a digital waveform in the time domain, and automatically categorizes the mentioned characteristic parameters based on exact categorization criteria for defining several differentialforms of diastolic dysfunction of left ventricle in human beings.