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1. (WO1997016152) DENTAL INSTRUMENT FILTER AND VALVE ASSEMBLY
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1997/016152 International Application No.: PCT/US1996/013943
Publication Date: 09.05.1997 International Filing Date: 30.08.1996
Chapter 2 Demand Filed: 19.03.1997
IPC:
A61C 1/00 (2006.01) ,A61C 1/05 (2006.01) ,A61C 17/02 (2006.01)
A HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
C
DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
1
Dental machines for boring or cutting
A HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
C
DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
1
Dental machines for boring or cutting
02
characterised by the drive of the dental tools
05
with turbine drive
A HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
C
DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
17
Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
02
Rinsing or air-blowing devices, e.g. using fluid jets
Applicants:
SCITECH DENTAL, INC. [US/US]; Suite 700 562 1st Avenue South Seattle, WA 98104, US
Inventors:
JOHNSTON, Simon, E.; US
JOHNSTON, Anna, M.; US
WILLIAMS, Jeffrey, F.; US
Agent:
ANDERSON, Ronald, M.; Law Offices of Ronald M. Anderson Suite 1710 500 108th Avenue, N.E. Bellevue, WA 98004, US
Priority Data:
08/551,34301.11.1995US
Title (EN) DENTAL INSTRUMENT FILTER AND VALVE ASSEMBLY
(FR) ENSEMBLE FILTRE ET SOUPAPE POUR INSTRUMENTS DENTAIRES
Abstract:
(EN) A filter and one-way valve for protecting a dental patient from contamination by bacteria that may be picked up by water flowing through a supply line and to prevent cross contamination of patients from the reflux of fluid from inside a patient's mouth. Several different embodiments of the invention are disclosed, including a filter/one-way valve (38) that combines a filter (42) with a one-way valve (46) in an integral assembly. This assembly is installed in a water line (34) supplying water to an air/water syringe (20), or other dental intrument, such as a dental hand piece (160), or an ultrasonic scaler. Alternatively, a separate filter is installed in the water (and/or air) line upstream of the dental instrument, and a one-way valve (140) is installed between the head of the dental instrument and a tip through which water is injected into the mouth of a patient. Furthermore, an adapter (170) that couples to a bypass circuit in which the filter/one-way valve is installed enables the benefits of the present invention to be achieved with respect to the high-speed hand piece without cutting into a line (188) through which water and other fluids are supplied to the hand piece.
(FR) Un filtre et une soupape monodirectionnelle protègent un patient de la contamination pouvant survenir chez un dentiste à cause de bactéries transportables par l'eau s'écoulant par une conduite d'alimentation, et ils évitent la contamination croisée de patients due au reflux d'un fluide provenant de la bouche d'un patient. On décrit plusieurs variantes de l'invention, y compris un filtre/soupape monodirectionnelle (38) combinant un filtre (42) et une soupape monodirectionnelle (46) de façon intégrée. Un tel ensemble est monté sur une conduite (34) qui amène de l'eau à une seringue à air/eau (20) ou à un autre instrument dentaire tel qu'une pièce à main (160) ou un détartreur à ultrasons. On peut aussi installer un filtre séparé sur une conduite d'eau (et/ou d'air), en amont de l'instrument dentaire, et une soupape monodirectionnelle (140) entre la tête de cet instrument et une extrémité par laquelle l'eau est injectée dans la bouche du patient. De plus, un adaptateur (170), qui se couple sur un circuit de dérivation, où est installé le filtre/soupape monodirectionnelle, procure les mêmes avantages concernant une pièce à main dentaire fonctionnant à grande vitesse sans exiger qu'on coupe dans une conduite (188) par laquelle l'eau et d'autres fluides parviennent à cette pièce à main.
Designated States: AL, AM, AT, AU, AZ, BB, BG, BR, BY, CA, CH, CN, CZ, DE, DK, EE, ES, FI, GB, GE, HU, IL, IS, JP, KE, KG, KP, KR, KZ, LK, LR, LS, LT, LU, LV, MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, TJ, TM, TR, TT, UA, UG, UZ, VN
African Regional Intellectual Property Organization (ARIPO) (KE, LS, MW, SD, SZ, UG)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, CH, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
CA2236461AU1996069069