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Felix Hoffmann, a German chemist, was searching for something to relieve his father's arthritis. In doing so, he "rediscovered" acetylsalicylic acid and in 1900, patented a stable process for developing it. Hence, we have aspirin.
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| Number | Title | Issue Date |
| 7335023 | Aspirator having a cushioned and aspiration controlling tip A disposable cushioned aspirator which forms part of a dental or medical aspirating system. The disposable cushioned aspirator appliance described herein is intended principally to be used in dental and medical procedures where body fluids and rinse water is evacuat... | 02/26/2008 |
| 7331949 | Urinary catheter with check valve The present invention provides a novel construction for a catheter that includes backflow prevention in the form of a check valve, which keeps the flow of drained fluid material from reentering the patient. The catheter construction of the present invention provides... | 02/19/2008 |
| 7309232 | Methods for treating dental conditions using tissue scaffolds The invention provides methods, apparatus and kits for regenerating dental tissue in vivo that are useful for treating a variety of dental conditions, exemplified by treatment of caries. The invention uses tissue scaffold wafers, preferably made of PGA, PLLA, PDLLA ... | 12/18/2007 |
| 7287981 | Cooling device and method for intraoral device illumination source A method of using a heat sink device with an intraoral illumination device includes inserting an intraoral illumination device at least partially in a patient's mouth, connecting a heat sink device to the intraoral illumination device, the heat sink device including... | 10/30/2007 |
| 7276199 | Molding methods including movable core pin support Apparatus and methods for molding a part with at least one passage at least partially therethrough. Generally, the method includes injecting a molding material into a mold cavity having at least one pin disposed therein to form the passage. In preferred implementati... | 10/02/2007 |
| 7261560 | Dental suction device A dental suction device includes a hollow tube having both flexibility and shape retainability. The tube has its both ends connected to a connector and is formed with suction holes. The connector can be connected to a vacuum source. A suction force produced by the v... | 08/28/2007 |
| 7226413 | Nerve root retractor and sucker An ergonomically and functionally improved combination nerve root retractor and sucker device, system, and methods of using such a nerve root retractor and sucker are provided. The nerve root retractor and sucker of the current invention having an adjustable geometr... | 06/05/2007 |
| 7172419 | Suction tip for dental treatment The invention provides a suction tip for dental treatment which has no possibility of causing a patient discomfort such as pain when its end portion touches the gingiva or oral cavity mucosa of the patient, and enables an easy suction operation and an easy attachmen... | 02/06/2007 |
| 7156896 | Separating tank assembly and method of draining separating tank A separating tank assembly enables a dental vacuum separating tank to be drained without using a pump and without turning off or isolating the vacuum source from the tank. A drain tank is provided in fluid communication with the separating tank, and a control valve ... | 01/02/2007 |
| 7131839 | Backflow prevention sleeve for suctioning devices A sleeve for preventing backflow and cross-contamination between patients of fluid and particulate matter as well as other contaminants present within a dental/medical suctioning device. The sleeve includes a sleeve inlet end that sealingly attaches to and surrounds... | 11/07/2006 |
| 7044936 | Catheter connector with pivot lever spring latch A catheter connector for coupling to a catheter, the connector having a body part, a tubular shaped compressible plug situated in a bore in part, with the proximal end of the catheter insertable into the bore of the plug, and a lever pivotably mounted to the housing... | 05/16/2006 |
| 6918764 | Oral cavity cleaning device An oral cavity device wherein a pump is driven with a cleaning head introduced in the oral cavity to suck residual matter in the oral cavity and to drain it into a waste liquid tank in order to clean the oral cavity, and wherein a water feed port of a water feed tub... | 07/19/2005 |
| 6659768 | Oral cavity cleaning device A waste liquid tank B is connected to a cleaning head 60 through a waste tube 25. Squeezing means 61 is provided in a waste flow passage of from an end 60a of the cleaning head 60 to a suction port b of the waste liquid tank B to squeeze the waste flow pa... | 12/09/2003 |
| 6238213 | Suction oral brush A suction oral care device with a head having opposite scrub elements. The scrub elements are dissimilar to one another, one of the scrub elements comprising bristles and the other comprising a foam pad. A suction port communicates with each scrub element... | 05/29/2001 |
| 6203321 | Backflow prevention system in suctioning apparatus A dental apparatus backflow-prevention system substantially prevents contaminant backflow into a patient's mouth. The system includes a saliva ejector tube for insertion into the patient's mouth and for removal of saliva, blood, etc. when a vacuum is appl... | 03/20/2001 |
| 6129547 | Oral care system An oral care system includes a universal handle which is configured to hold any of a plurality of oral hygiene instruments, and a lavage source to apply lavage solution through the oral hygiene instruments to facilitate complete cleaning of a patient's mo... | 10/10/2000 |
| 6068477 | Foam-cushioned aspirator A disposable cushioned aspirator which forms part of a dental or medical aspirating system. The disposable cushioned aspirator appliance described herein is intended principally to be used in dental procedures where bodily fluids and rinse water is evacua... | 05/30/2000 |
| 5975897 | Oral suctioning swab An oral suctioning swab includes a rigid plastic tube of an elongated shape having first and second ends and a bend therebetween. A suctioning thumb control is bonded to the tube first end and a soft resilient tubular tip is bonded to said tube second end... | 11/02/1999 |
| 5944522 | Automatic cleaning device An automatic cleaning device for delivering a cleaning fluid to a vacuum hose of a dental suction system is provided which automatically dispenses a measured amount of cleaning fluid into the vacuum hose each time that a dental instrument is changed. The ... | 08/31/1999 |
| 5941703 | Unidirectional valve for preventing back flow in a dental saliva ejector A unidirectional valve (46) is used for preventing a back flow (52) of fluid matter (72) in a dental saliva ejector (20). The unidirectional valve (46) includes a valve body (74) and a valve diaphragm (76). The valve diaphragm (76) is coupled to a base (7... | 08/24/1999 |
| 5908297 | Dental vacuum system with foot-actuated valve A dental vacuum system having a foot-actuated valve for controlling the flow of vacuum through the system. The foot-actuated valve is located away from the field of operation such that the valve is not exposed to the typical sources of pathogenic contamin... | 06/01/1999 |
| 5899878 | Nasal irrigation system There is disclosed a nasal irrigation system having an applicator or irrigating member through which a pressurized stream of irrigating fluid is passed through to the nasal passage. The applicator or irrigating member includes a tubular member, adapted fo... | 05/04/1999 |
| 5882194 | Illuminated suction tool with a disposable tip A dental suction tool has a disposable sanitary plastic suction tip to prevent cross contamination from one patient to the next. Additionally, a light source such as a fiberoptic bundle with or without a ring light is provided on the interior of the denta... | 03/16/1999 |
| 5855478 | Method for preventing back flow in a dental saliva ejector A unidirectional valve (46) is used for preventing a back flow (52) of fluid matter (72) in a dental saliva ejector (20). The unidirectional valve (46) includes a valve body (74) and a valve diaphragm (76). The valve diaphragm (76) is coupled to a base (7... | 01/05/1999 |
| 5725374 | Coupler with check valve for a dental ejector hose A coupler is adapted for inserted engagement with a dental ejector valve and serves to couple a vacuum hose to the valve. A passageway in the coupler is closed by a flexible disk which flexes open in response to a vacuum inducted ejector system flow from ... | 03/10/1998 |
| 5509802 | Oral suction tip An oral suction tip is described which includes a tubular body. The tubular body has a peripheral sidewall, a first end, a second end, and a single passage for transmitting fluids extending between the first end and the second end. A mouthpiece is provide... | 04/23/1996 |
| 5480124 | Vacuum tubing valve A vacuum tubing valve including a first receiver tube shoulder including a tubular aperture extending along a longitudinal axis for receiving a first tubular hose. Connecting the shoulder is a stator unit including a C-shaped cavity with an opening about ... | 01/02/1996 |
| 5468148 | Remotely controlled dental syringe A dental syringe for the controlled injection of air and water into a patient's mouth that effectively prevents the spread of contamination from patient to patient during the performance of dental procedures. The syringe comprises a one,piece, combination... | 11/21/1995 |
| 5464397 | Bacteria valve A valve is provided for preventing backflow of bacteria and other unhealthy substances in a medical suctioning apparatus. The valve includes a chamber and a tubular member positionable in the chamber having one or more reversely lipped fins. The chamber a... | 11/07/1995 |
| 5441410 | Disposable saliva ejector A disposable saliva ejector which has a formable hollow tube (40) with a tip (42) on the end with openings for drawing in saliva. The tube has a beveled hole (46) near the top through which single-integral instruments such as a scaler or a rotary instrume... | 08/15/1995 |
| 5425637 | Method and apparatus for preventing a back flow of oral contaminants in a low volume suction line of a dental saliva ejector A method of preventing a back flow of oral contaminants in a low volume suction line of a dental saliva ejector is described. This method consists of the single step of placing a vacuum release aperture through a tubular sidewall of a saliva ejector tip. ... | 06/20/1995 |
| 5267586 | Shutoff valve mechanism for the oral evacuator of a dental unit 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... | 12/07/1993 |
| 5230625 | Valve arrangement 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 a... | 07/27/1993 |
| 5165891 | High-volume ejector with valves and spacing fin A saliva ejector for dental use comprises a tube (16) having an open end with a slanted edge (32) and a tip valve comprising a disc (22) and a pivot attachments (24) mounted adjacent the tip. The valve enables the tube to be closed without having to touch... | 11/24/1992 |
| 5145368 | Suction root elevator and suction dental curette The invention relates to a suction root elevator and a suction dental curette each of which comprises a handle and a working part both of which are provided with a canal system which extends through both the handle and working part. The canal system termi... | 09/08/1992 |
| 5145367 | Vacuum instrument for dental hygiene and dental treatment A vacuum instrument for dental hygiene and dental treatment which is intended to permit parodontological treatment of the tooth pockets. The instrument has an elastic suction cap which can produce a sealed vacuum over the gum pockets and interdental crevi... | 09/08/1992 |
| 5123840 | Surgical apparatus A suction device is disclosed comprising a molded plastic handle having a suction bore therethrough and a spigot for connection to the hospital suction source. The device further comprises a probe having a suction passage therethrough and terminating in a... | 06/23/1992 |
| 5114342 | Saliva ejector tip with integral valve A saliva ejector tip for dental use comprises a tube (10) with a pliable, flexible tip. The end (26) of the tip is flat. The sides of the tip adjacent the end extend down to form a cage (22) of spiral mullions which terminate at a solid base portion of th... | 05/19/1992 |
| 5076787 | Variable suction aspirator head with solids trap A variable suction aspirator head for an end fitting of a suction hose consisting simply of an inner valve tube having wall holes and a slideable outer barrel, permitting variations in suction, the trapping of solid material by the valve tube wall holes a... | 12/31/1991 |
| 5066228 | Saliva ejector One object of the present invention is to provide a saliva ejector tip (3) having holes (6) on a recessed flat surface (4) for providing additional hole area than is available in conventional ejector tips, and away from the soft tissue, where they can cau... | 11/19/1991 |
