子分类：
| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 181 | Vacuum pump seal-water recycling and waste disposal system for dental operatories | US355536 | 1994-12-14 | US5667382A | 1997-09-16 | Robert S. Holland |
| A system for disposing of dental operatory effluent characterized by low water consumption for a water seal vacuum pump through the recycling of seal water, having means for controlling the temperature and vapor pressure of recirculating seal water, avoiding the presence of abrasives in seal water, reliable separation and disposal of gas-liquid-solid constituents of operatory effluent, collection and recovery of amalgam and heavy metals, and means for disinfecting the collection tank. Several embodiments of the invention are disclosed. | ||||||
| 182 | Methods and apparatus for controlling the aerosol envelope generated by ultrasonic devices | US900617 | 1992-06-18 | US5378150A | 1995-01-03 | Stephen K. Harrel |
| Disclosed is a suction hood assembly that is attachable to an ultrasonic handpiece, as well as to a source of suction. The suction hood assembly includes a portion thereof that opens in an area adjacent the ultrasonic tip to provide an area of influence of the suction and thereby recover microdroplets of body fluids, matter and water mist. The suction can be used to control the size of the aerosol envelope generated when the water stream from the ultrasonic device is directed toward the ultrasonic-moving tip. The size of the aerosol envelope can be substantially reduced to a small area of operation, thereby minimizing the dispersion of germs, viruses and body fluids from the patient to the surgeon. The suction tube assembly is easily attached or removed from the ultrasonic handpiece, is easily manufactured, cost effective and thus is disposable. | ||||||
| 183 | Shutoff valve mechanism for the oral evacuator of a dental unit | US973165 | 1992-11-06 | US5267586A | 1993-12-07 | Jorma Jankavaara |
| The invention concept is a shutoff valve mechanism (40) for use in conjunction with the oral evacuator of a dental unit, said mechanism being connectable to a suction tube (14) communicating with a vacuum pump. The shutoff valve mechanism (40) comprises a valve (42, 48) by means of which an air flow (S) induced by the vacuum applied to the suction tube (14) can be switched on to effect via an evacuator tip (30) attached to the shutoff valve mechanism (40), whereby the evacuator tip can be employed for evacuating liquids and solid particles (SP) from the patient's mouth. The shutoff valve mechanism (40) further comprises non-moving elements (41, 42, 43, 44, 45, 46) permanently attached to the suction tube (14) and elements (49, 50, 51, 52, 53, 54, 55) adapted movable relative to said non-moving elements, both sets of elements incorporating a flow channel (41a, 42a, 43a, 53a). | ||||||
| 184 | Valve arrangement | US859667 | 1992-03-30 | US5230625A | 1993-07-27 | Ralf Sutter; Lutz Beerstecher |
| A valve arrangement for controlling a suction stream in a dental suction system, wherein the valve controlling the flow contains a closure element that defines a valve space on one side and a control space on the opposite side. The closure element, such as a membrane, is urged closed when the pressure in the control space is greater than the pressure in the valve space and the movement of the closure element is obtained by actuation of various control valves which control flow in effective lines extending to the control space, which lines have different effective cross sections so as to control the amount of movement of the closure element toward the closed position. | ||||||
| 185 | Vacuum strip apparatus for surgery | US256629 | 1988-10-12 | US5215539A | 1993-06-01 | Arnold Schoolman |
| A disposable surgical apparatus for removing potentially harmful materials including fluids, vapors and airborne particles, especially AIDS virus, from an operating zone, during an operation comprising a vacuum generating system that draws the potentially harmful material through a suction manifold mounted on a surface in the proximity of a wound or incision. The suction manifold is incorporated in an elongate strip having an adhesive surface that is adhered to the patient in the vicinity of an incision or the like and that includes a plurality of apertures therealong in flow communication with the vacuum generating system. | ||||||
| 186 | Dental treatment method | US822912 | 1992-01-21 | US5205743A | 1993-04-27 | Bjorn M. Ludvigsson; Ulf D. L. Stromberg |
| The invention relates to a method of decreasing the risk of injury from mercury in conjunction with dental treatment. The invention is characterized by passing an effective air flow immediately outside the oral cavity in which the dental treatment is effected. The air flow, together with air removed by suction from the oral cavity when sucking saliva therefrom is passed through a first filter in which solid and liquid particles are extracted from the air flow. The air is then passed through a second filter which is capable of taking up essentially all of the mercury vapor present in the air. This filter is preferably a selenium filter. | ||||||
| 187 | Vacuum controller and filter assembly for dental vacuum system | US344459 | 1989-04-28 | US4963094A | 1990-10-16 | Robert A. Meyer |
| A multi-function control component for use in dental vacuum systems includes, within a single housing, a vacuum control device for controlling the vacuum intensity within the system; a first air filter device for cleaning air permitted to enter the system by the vacuum control device; a second air filter for filtering gases flowing from an associated separating tank to a vacuum pump; a moisture detection device mounted in the housing for shutting down the vacuum pump drive motor upon detection of a predetermined level of moisture in the housing; a vacuum intensity measuring device; and a sealing device for sealing off the separating tank from the vacuum pump. The vacuum pump is a rotary vane pump, and is operatively connected to dental aspirator tips. | ||||||
| 188 | Device for shutting off suction generated through the single tubes of dental surgery equipment | US58562 | 1987-06-05 | US4787846A | 1988-11-29 | Augusto Cattani |
| The invention relates to a device for shutting off suction generated through the single tubes of dental surgery equipment, which comprises a rotary mechanical obturator (5) located in the grip (1) of the suction tube (2) and attached to a pin (3) that engages in a helical groove (6) offered by the holder (4) in which the grip is replaced whenever the tube is not in use. Pin and obturator rotate as one between an open position and a closed position, the obturator being biased permanently toward the open position by a coil spring (7). | ||||||
| 189 | Valve for suction installation | US659236 | 1984-10-09 | US4589442A | 1986-05-20 | Leif Ernryd |
| A valve for a suction system, which comprises a sedimentation chamber (3) for collection of particles contained with the liquid sucked into the valve and suction outlet (6) having suction openings (8) in a float house (9), which suction openings (8) cooperate with a membrane (22), which is attached to a float member (21) in the float house (9) so that the membrane seals against the suction openings (8) when liquid do not reach the float house (9) and so that the area of the suction openings (8) is successively uncovered when the membrane (22) moves with the float member (21) at rising liquid level in the float house (9). | ||||||
| 190 | Device in dental suction apparatus for connecting and holding suction nozzle tubes and/or for filtering | US889854 | 1978-03-24 | US4226590A | 1980-10-07 | Hans-Joachim Hofmann |
| Dental suction apparatus is a modular construction, made up of a plurality of modules joined fluid-tight side-by side. A main suction duct extends through all of the modules. At least two of the modules have connection for suction hoses each having a suction nozzle, holders being provided on the modules for holding the suction nozzles when not in use. At least one module has a filter chamber connected between a suction tube and the main suction duct. A removable filter unit in the filter chamber has a basket-shaped filter on a stem by means of which the filter can be removed through on opening closed by a hinged cover. A cap on the stem provides a seal for the filter chamber. Flow of air from the suction tube of each suction tube module to the main suction duct is controlled by a valve in the form of a bellows provided with a telescopic guide and with a control valve for controlling the expansion and contraction of the bellows by differential pressure. | ||||||
| 191 | High vacuum pump | US677249 | 1976-04-15 | US4093397A | 1978-06-06 | Grady R. Lovelady |
| A high vacuum pump having a centrifugally filtered intake with a particular utility as an aspirator in a dentist's office, for example, having a coaxial intake/output at the pump's rotor hub with a radial outlet therefrom, a liquid pressure seal on the top and bottom of the pump impeller assembly and an automatically flushed sump tank surrounding the intake filter. | ||||||
| 192 | Vacuum handpiece including integral vacuum valve | US44470974 | 1974-02-22 | US3863635A | 1975-02-04 | SWATMAN DONALD R |
| A novel handpiece specifically adapted for convenience of use in evacuating fluids and small particles from the oral cavity of the human body or the like is disclosed, which handpiece includes a novel vacuum valve for the selective application of suction from a source of low pressure such as a suction pump means. The novel structure of the valve as well as of the handpiece to provide ease of cleaning and maintenance as well as low cost manufacture is described.
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| 193 | Liquid waste container | US3629879D | 1970-06-19 | US3629879A | 1971-12-28 | FORST CARL K |
| A device for receiving liquid waste, the device being on the order of a cuspidor. The main body of the device includes a flexible upper wall to which is secured an upwardly extending funnel which may be pushed downward onto an internal cone secured to the bottom wall of the device in order to close the device.
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| 194 | Pump for sucking liquid, air and solid particles | US52479266 | 1966-02-03 | US3386386A | 1968-06-04 | ERIKSSON SVEN G |
| 195 | Catch receptacle for evacuative suction apparatus | US40113864 | 1964-10-02 | US3305927A | 1967-02-28 | MITCHELL JOSEPH K |
| 196 | Device for sucking liquid, air and solid particles | US34379464 | 1964-02-10 | US3289591A | 1966-12-06 | GUSTAF ERIKSSON SVEN |
| 197 | Pivoted disc valve having a particular mounting arrangement | US26523163 | 1963-03-14 | US3232578A | 1966-02-01 | COUSINS LEROY L |
| 198 | Device for sucking liquid, air and solid particles | US20607062 | 1962-06-28 | US3161135A | 1964-12-15 | GUSTAF ERIKSSON SVEN |
| 199 | Saliva ejector control system | US11436861 | 1961-06-02 | US3091858A | 1963-06-04 | MISICKA ARTHUR D |
| 200 | Evacuative suction apparatus | US73665458 | 1958-04-30 | US3017886A | 1962-01-23 | THOMPSON ELBERT O |
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