310 results about "Suction control" patented technology

System and method for selectively applying electrical energy to structures within or on the surface of a patient's body and controlling the flow of an electrically conductive fluid from the application site to provide or maintain a desired operating condition of the electrosurgical device. An electrosurgical probe is in communication with a fluid transport apparatus through a fluid transport lumen having an opening at an end proximate the application site and disposed proximate the electrosurgical probe. A controller in communication with the fluid transport apparatus provides control signals to the fluid transport apparatus in response to at least one operating parameter associated with the system. Based on the received control signals, the fluid transport apparatus adjusts a flow rate of the electrically conductive fluid at the application site through the fluid transport lumen in response to at least one operating parameter associated with the system.

The present invention relates to a device and method to control suction in a patient environment. The device comprises a body portion having an interior chamber adapted for coupling to a source of the vacuum; a valve comprising a shaft rotatably coupled to the body portion; and an actuator coupled to the shaft of the valve. In operation the valve is rotatable between i) a first position in which the vacuum is provided to the interior chamber via the valve at a first predetermined level and ii) a second position in which the vacuum is interrupted to the interior chamber. The actuator is adapted to move between a first position and a second position which increases the vacuum in the interior chamber to a second predetermined level for clearing occluded suction lines in the patient circuit.

Described herein are systems, apparatuses and methods for the design and use of a suction-controlled box for the measurement of stress-dependent soil and water characteristics, shear strength, volume changes and consolidation characteristics from a single unsaturated soil specimen. The suction-controlled box can include a suction control part and a mechanical loading part, which can apply various suctions and mechanical loadings to test a specimen for a full range of suctions. The suction-controlled box can also include a helical water compartment that can flush diffused air bubbles.

A microsurgical system capable of controlling aspiration via a vacuum control mode, a suction control mode, or a flow control mode.

The invention herein applies generally to General-purpose, Surgical and Tracheal suction regulators. In one embodiment of the invention, at least one micro-latching valve is opened and closed by at least one solenoid electromechanical actuator. The micro-latching solenoid valve in turns opens and closes at least one main valve that is connected the hospital vacuum or gas intake conduit. The latching nature of the solenoid, along with its low power activation allows for a battery powered, long-life device. Timing and control of the electromechanical actuator is performed by a low power micro-controller. This provides opportunity for highly accurate timing cycles, user adjustable timing intervals and feedback loop control operations. The invention also features a wireless suction control system of many suction regulators comprising a network. Wherein the plurality of wireless suction regulators are linked to at least one router with at least one wireless transmitter, and the network is linked through the router to the internet.

The invention discloses an oil fume suction control method of an intelligent breathing range hood. The range hood comprises a machine body, a fan and a main controller, wherein the main controller controls the fan to operate, the control method comprises a stir-frying stage and a post-processing stage, the range hood is provided with an ultra-high gear, the revolving speed of the fan under the ultra-high gear V is not less than 1000 and not more than 1250 rpm (Revolutions Per Minute), the fan is operated under the ultra-high gear during the stir-frying stage, the stir-frying stage is started after the oil fume suction control method is carried out for 0-80 seconds, and ended after the oil fume suction control method is carried out for 100-180 seconds, and the fan downshifts to operate after the stir-frying stage is ended. According to the invention, the range hood carries out an intelligent multistage breathing control method to realize maximum utilization of energy efficiency; meanwhile, the range hood disclosed by the invention lowers impacts of range hood noises on users at the greatest extent to optimize use feel of the range hood.

The invention discloses a double-lever high-temperature, high-pressure and unsaturated consolidometer, which comprises a pressure chamber, a suction control device, a temperature control box, a double-lever loading device and a deformation measuring device, wherein the pressure chamber is fixed in a temperature control box; the suction control device is arranged in the temperature control box, is connected with the pressure chamber and is used for controlling the suction of the pressure chamber; the temperature control box is arranged on a platform of the double-lever loading device for controlling temperature of the pressure chamber; the double-lever loading device is used for supporting the temperature control box and applying pressure to the pressure chamber in the temperature control box; and the top end of the deformation measuring device is fixedly arranged on the double-lever loading device, and the bottom end of the deformation measuring device is arranged on the pressure chamber for measuring displacement of a sample. In the consolidometer, the double-lever loading device, the suction control device and the temperature control box are adopted to realize the experimental study of volume change characteristic of the sample under high-pressure, full suction range and temperature control conditions.

The invention relates to a vacuum automatic film pasting system, which comprises a film pasting mechanism and an air suction mechanism, wherein the film pasting mechanism comprises an upper cover plate and a lower cover plate, one edge of the upper cover plate is movably connected with one side of the lower movable plate, the upper cover plate is provided with an upper cover air cavity, a dismountable workpiece carrying plate is arranged on the lower cover plate and is provided with one or a plurality of workpiece placing grooves, the bottom surface of the upper cover plate is provided with upper cover film pasting absorption blocks in one-to-one correspondence to the workpiece placing grooves, the upper cover film pasting absorption blocks are provided with a plurality of air holes communicated with the upper cover air cavity, the air suction mechanism comprises a vacuum air storage tank and an air suction pipe, the air suction pipe is connected between the vacuum air storage tank and the upper cover air cavity, and an air suction control valve for controlling the air suction mechanism to suck the air is arranged on the air suction pipe. The lower cover plate is provided with a lower cover air cavity communicated with the air suction pipe, a lower cover film pasting absorption block is arranged on the lower cover plate, and the lower cover film pasting absorption block is provided with a plurality of air holes communicated with the lower cover air cavity. When the vacuum automatic film pasting system is adopted for pasting protection films on cases or screens, the film pasting accuracy and the film pasting smoothness can be effectively improved, the film pasting speed can be effectively accelerated, and the film pasting effect is improved.

The ejection restoration apparatus for a liquid ejection head having a plurality of nozzles which are disposed in a planer nozzle surface and from which liquid is ejected, includes: a first suction cap which covers a partial region of the planer nozzle surface and which has a contact portion being constituted by an elastic body and making contact with the planer nozzle surface, the partial region being smaller than area of the planer nozzle surface in which the nozzles are disposed and being larger than cross-sectional area of one of the nozzles; a suction cap movement device which moves the first suction cap in parallel with the planer nozzle surface while causing the contact portion of the first suction cap to make contact with the planer nozzle surface; a nozzle abnormality detection device which detects an abnormal nozzle suffering an abnormality, in the nozzles; and a suction control device which causes the first suction cap to suction the liquid in the abnormal nozzle detected by the nozzle abnormality detection device, wherein the first suction cap is moved on the planer nozzle surface in a state where a space defined by the first suction cap and the planer nozzle surface is set to a pressure lower than an atmospheric pressure, so that the first suction cap fulfills both a wiping function and a suctioning function.

The invention provides a low-Reynolds-number airfoil section with multi-seam synergetic jet flow control and a control method. The low-Reynolds-number airfoil section with multi-seam synergetic jet flow control comprises a jet exhaust (2) arranged on the front edge of the upper surface of the airfoil section (1), wherein a suction area (3) formed by a plurality of orderly arranged suction tiny holes (10) is arranged on the rear edge of the upper surface of the airfoil section (1); the jet exhaust (2) is communicated with the suction area (3) through an airflow pipeline (5) in the airfoil section (1) to form a suction loop; an air pump (4) for driving the synchronous operation of suction and injection is installed in the airflow pipeline (5); the jet exhaust (2) and the suction tiny holes (10) are vertical to the upper surface of the airfoil section (1). The suction control technology is applied to the low-Reynolds-number airfoil section, the lifting-resistance characteristic of the airfoil section is improved and the aerodynamic characteristic of a high-altitude vehicle is perfected by controlling the laminar separation of the low-Reynolds-number airfoil section; the airfoil section has the advantages of low power consumption, so that the aerodynamic efficiency of the high-altitude vehicle is improved.

The invention discloses a temperature-controlled unsaturation high-pressure consolidometer, comprising a pressure chamber, a high-pressure loading device, a suction control device, a temperature control device, a digitization measuring device and a data acquisition device, wherein the pressure chamber is disposed in the high-pressure loading device; the high-pressure loading device is used for applying pressure to the pressure chamber; the temperature control device is covered outside the pressure chamber for controlling the temperature of the pressure chamber; the pressure chamber is also connected to the suction control device for controlling the suction of the pressure chamber; the digitization measuring device monitors the pressure, temperature and displacement of a sample, and transmits the data to the data acquisition device connected to the digitization measuring device for processing. In the invention, the high-pressure loading device, the suction control device and the temperature control device are combined to realize the experimental study of soil body change characteristics under a full suction range, and high temperature and high pressure conditions on the basis of the traditional unsaturation consolidometer. In addition, the digital measuring device and the data acquisition device are combined to realize the automatic acquisition of experimental data.

The invention discloses a method for controlling the flow separation on the control surface of an airplane by using a blow/suction manner. The method comprises the steps of: arranging a blow/suction gap near a flow separation point at the front edge of the upper surface of the control surface, wherein the blow/suction gap is distributed in the span direction; and arranging a suction gap at the back edge of the upper surface of the control surface, so as to carry out control by single blow or single suction or combined blow and suction according to different conditions. According to the method, the separation can be eliminated by using small blow capacity or suction capacity, the control efficiency of the control surface is increased, and the longitudinal and transverse control stability of the airplane is improved, and obvious influence to an engine power propulsion system does not generate.

An improved high efficiency suction control valve providing unobstructed fluid flow in its activated suction applied mode for removal of viscous secretions at a low level of applied input suction through the catheter. The valve provides positive sealing between a hand-operated plunger and the valve passageway walls against which the plunger engages by slightly over sizing the plunger walls such that the plunger walls expand against a further suction passageway. Similar sealing is provided between the plunger and passageway above the suction passageway.

A suction control apparatus is adapted to be used in a packaging machine for conveying and packaging a belt-shaped film while the film is being suctioned by a suction-type film conveyor. The suction control apparatus includes a proper vacuum-degree determination section and a vacuum-degree control unit. The proper vacuum-degree determination section is configured and arranged to determine a proper degree of vacuum of the suction-type film conveyor, which is less than a reference value set in advance. The vacuum-degree control unit is configured to set the degree of vacuum to a first value corresponding to the proper degree of vacuum determined by the proper vacuum-degree determination section.

A suction regulator for controlling a level of negative pressure in a system in which compensatory clean airflow is used to isolate a control device for regulating suction delivered to a patient is disclosed. The regulator comprises an inlet; an outlet; a controller for controlling the suction delivered to the inlet; and a barrier for isolating the controller from the inlet.

A handpiece (20) for actuating a surgical cutting accessory (24). The handpiece has a housing (22) with a bore (46) through which a suction is drawn. A valve (50) regulates the suction flow. The valve (50), formed of metal, has an barrel (60), formed of rubber, that surrounds the rotating valve stem (56). The barrel defines a non-circular openings (96) through which there is suction flow. The openings are shaped to have small diameter sections (104) that initially come into registration with the suction bore when the stem is rotated to the open state. This ensures that, when the valve is open, there is only a relatively small surgeon-selected suction flow through the handpiece. The barrel is formed with ribs (94, 106) the serve as seals between the valve and the adjacent surface of the housing. A suction fitting (49) is rotatably fitted to the proximal end of the handpiece.

The invention provides an expanding mechanical air suction control device. The expanding mechanical air suction control device comprises a crankshaft, an expanding air cylinder, a first flange and a second flange, wherein the expanding air cylinder sleeves the crankshaft, the first flange sleeves the crankshaft and is arranged on the first side of the expanding air cylinder, and the second flange sleeves the crankshaft and is arranged on the second side of the expanding air cylinder. The first flange is provided with a first high-pressure fluid channel which extends from the outer edge of the first flange to the crankshaft, and the first flange is also provided with a second high-pressure fluid channel communicated with an air cylinder inlet of the expanding air cylinder; the crankshaft is provided with a first groove, and the first groove is provided with a conveying portion for communicating the first high-pressure fluid channel and the second high-pressure fluid channel. The expanding mechanical air suction control device can effectively reduce and avoid axial movement of the crankshaft and enhance the stability of the expanding air cylinder and the crankshaft in the process of operation.