EP0143617A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Cleansing system
Assignee: Advanced Design Corp
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Filing: 1984-11-22
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Granted: —
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Expires: 2004-11-22
Abstract
Abstract @ A hand-held dental cleansing system for delivery of an abrasive laden stream against an object which is to be cleaned, e.g. a tooth. The system is adapted to be coupled to sources of pressurized liquid and gas, and includes handpiece 24 having a canister 36 containing the abrasive material. Through various valves 14, 18, 30 on the handpiece controlling the liquid and gas streams, the abrasive material is transported from the canister to a mixing chamber 46 within a nozzle on the handpiece. The liquid or gas may be combined with the abrasive laden stream within the mixing chamber so as to result in a homogenous stream delivered to a single point on the object being cleaned. The canister 36, mixing chamber 46 and connecting conduit 44 may be constructed as a single unit adapted for easy removal and replacement by a fresh unit.
Inventors
- 👤 Ronald C. Webb
- 👤 Edwin A. Nelson
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-31 23:28
CPC Classifications
A; A61; A61C; A61C3/00; A61C3/02; A61C3/025
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
128 words
A hand-held system adapted to be connected to gas and liquid supply means for delivering an abrasive to an object to be cleaned, characterised in that it comprises: first means (12,14,18,20 or 28,30,32) connected to the gas supply means (22) for producing a controlled gas stream; second means (28,30,32 or 12,14,18,20) connected to the liquid supply means (34) for producing a controlled liquid stream; a canister (36) containing an abrasive material (42), said canister having an inlet(38) for receiving one of said gas and liquid streams, and an outlet (40) permitting exiting of an abrasive laden stream; and a mixing chamber (46) receiving said gas, liquid and abrasive laden streams for combining and directing said streams so as to strike a common point on the object being cleaned.
Claim 2
Dependent Claim
128 words
A hand-held system adapted to be connected to gas and liquid supply means for delivering an abrasive to an object to be cleaned, characterised in that it comprises: first means (12,14,18,20 or 28,30,32) connected to the gas supply means (22) for producing a controlled gas stream; second means (28,30,32 or 12,14,18,20) connected to the liquid supply means (34) for producing a controlled liquid stream; a canister (36) containing an abrasive material (42), said canister having an inlet(38) for receiving one of said gas and liquid streams, and an outlet (40) permitting exiting of an abrasive laden stream; and a mixing chamber (46) receiving said gas, liquid and abrasive laden streams for combining and directing said streams so as to strike a common point on the object being cleaned.
Claim 3
Dependent Claim
45 words
A system according to claim 1 wherein said first means includes first and second manually actuatable valves (14,18), said gas stream being connected to said inlet (38) of said canister via said first valve (14) and to said mixing chamber via said second valve (18).
Claim 4
Dependent Claim
44 words
A system according to claim 1 wherein said second means includes first and second manually actuatable valves (14,18), said liquid stream being connected to said inlet (38) of said canister via said first valve and to said mixing chamber (46) via said second valve.
Claim 5
Dependent Claim
25 words
A system according to claim 3 wherein said abrasive material comprises a solid block of particle abrasives which dissolves upon contact with said liquid stream.
Claim 6
Independent Claim
40 words
A system according to any one of claims 2,3 and 4 wherein said canister includes a piston (100) driven by said gas or liquid stream for compressing said abrasive material and delivering said abrasive laden stream to said mixing chamber.
Claim 7
Independent Claim
38 words
A system according to any one of claims 2 to 5 wherein said first and second valves (14,18) are independently actuatable to selectively deliver said gas or liquid stream and said abrasive laden stream to said mixing chamber.
Claim 8
Dependent Claim
14 words
A system according to claim 1 wherein said abrasive material comprises a dry powder.
Claim 9
Dependent Claim
17 words
A system according to claim 1 wherein said abrasive material comprises abrasive particles suspended in a fluid.
Claim 10
Independent Claim
28 words
A system according to any one of the preceding claims further comprising a unitary handpiece (24) containing said first and second means, said canister and said mixing chamber.
Claim 11
Dependent Claim
126 words
A hand-held system adapted to be connected to gas and liquid supply means for delivering an abrasive to an object to be cleaned, characterised in that it comprises: first means (12,14,20 or 28,32) connected to the supply means for producing a controlled gas stream; second means (28,32 or 12,14,20) connected to the liquid supply means for producing a controlled liquid stream; a canister (36) containing an abrasive material and having an outlet (40) to permit exiting of an abrasive laden stream; manually actuatable means (108;116,118) coupled to said canister for producing said abrasive laden stream; and a mixing chamber 46 receiving said gas, liquid and abrasive laden streams for combining and directing said streams so as to strike a common point on the object being cleaned.
Claim 12
Dependent Claim
126 words
A hand-held system adapted to be connected to gas and liquid supply means for delivering an abrasive to an object to be cleaned, characterised in that it comprises: first means (12,14,20 or 28,32) connected to the supply means for producing a controlled gas stream; second means (28,32 or 12,14,20) connected to the liquid supply means for producing a controlled liquid stream; a canister (36) containing an abrasive material and having an outlet (40) to permit exiting of an abrasive laden stream; manually actuatable means (108;116,118) coupled to said canister for producing said abrasive laden stream; and a mixing chamber 46 receiving said gas, liquid and abrasive laden streams for combining and directing said streams so as to strike a common point on the object being cleaned.
Claim 13
Dependent Claim
50 words
A system according to claim 10 wherein said first means (20) includes a first manually actuatable valve for controlling delivery of said gas stream to said mixing chamber, and said second means (32) includes a second manually actuatable valve for controlling delivery of said liquid stream to said mixing chamber.
Claim 14
Dependent Claim
25 words
A system according to claim 11 wherein said first and second valves are operable independently of each other and independently of said manually actuatable means.
Claim 15
Independent Claim
22 words
A system according to any one of claims 10,11 and 12 wherein said abrasive material comprises abrasive particles suspended in a fluid.
Claim 16
Independent Claim
20 words
A system according to any one of claims 10 to 13 wherein said manually actuatable means comprises a pump (116).
Claim 17
Dependent Claim
30 words
A system according to claim 13 wherein said container comprises a compressible bladder and said manually actuatable means comprises lever means (108) for exerting a force to collapse said bladder.
Claim 18
Independent Claim
33 words
A system according to any one of claims 10 to 15 further comprising a unitary handpiece (24) containing said first and second means, said canister, said manually actuatable means and said mixing chamber.
Claim 19
Dependent Claim
24 words
A system according to claim 9 or claim 16 wherein said canister is conveniently removable from said handpiece to permit replacement by another canister.
Claim 20
Independent Claim
42 words
A system according to any one of claims 9,16 and 17 wherein said mixing chamber comprises a frustoconical nozzle having first inlet means (48) for receiving said liquid and gas streams, and second inlet means (50) for receiving said abrasive laden stream.
Claim 21
Dependent Claim
47 words
A system according to claim 18 wherein said first and second means are conveniently separable from said first inlet means (48), and said canister (36) together with said mixing chamber (46) are conveniently removable from the handpiece (24) to permit replacement by another canister and mixing chamber.
References Cited (Backward Citations)
No citation records indexed.
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