EP0322223A2
Expired / Lapsed
EP
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Apparatus for mixing the components of a liquid body treatment composition
Assignee: National Patent Development Corp
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Filing: 1988-12-21
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Granted: —
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Expires: 2008-12-21
Abstract
Abstract Apparatus is provided by which a liquid body treatment composition, e.g., an activated dental solution formulated from two separate liquids components, is delivered to a subject undergoing treatment. The apparatus includes solution mixing and pumping means and, optionally, a heater unit for heating the solution to body temperature prior to delivery to the subject. The apparatus is characterized by its compact size and high treatment solution storage capacity.
Inventors
- 👤 Aaron Friedman
- 👤 Gordon H. Minns
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-25 23:50
CPC Classifications
A; A61; A61C; A61C1/00; A61C1/0061; A61C1/0084
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
348 words
An apparatus for delivering freshly prepared liquid body treatment composition comprising first and second liquid components to a point of use therefore which comprises: a) a housing having a reservoir-receiving support surface and a reservoir-mounting wall surface; b) first and second reservoirs securely, but removably, received on the support surface of the housing in a predetermined position relative to the mounting wall surface, the first and second reservoirs containing the first and second liquid components, respectively, of the body treatment composition, each reservoir possessing - an enclosure for the liquid, - a pressure conduit having an inlet communicating with the exterior of the reservoir and positioned on the side of the reservoir adjacent the top thereof, and an outlet positioned within the interior of the reservoir, the pressure conduit admitting gas at or above atmospheric pressure to the interior of the reservoir as liquid is dispensed therefrom, - a fluid conduit having an inlet adjacent the bottom of the reservoir and an outlet communicating with the exterior of the reservoir and positioned on the side of the reservoir adjacent the top thereof and in proximity to the inlet of the pressure conduit, the fluid conduit providing passage of liquid from the reservoir to the exterior thereof, - seal means occluding the inlet of the pressure conduit and the outlet of the fluid conduit; c) pressure and fluid conduit receiving members associated with the mounting wall of the housing such that upon installation of a reservoir on the support surface of the housing, said receiving members simultaneously penetrating the seal means occluding the inlet of the pressure conduit and the outlet of the fluid conduit and forming fluid-tight couples therewith; d) means cooperating with the pressure and fluid conduit receiving members for providing a flow of liquid from each of the first and second reservoirs to the intakes of a mixing manifold, said manifold effecting the mixing of the liquids to provide the liquid body treatment composition; and, e) means for delivering liquid body treatment composition from the outlet of the mixing manifold to a point of use therefor.
Claim 2
Independent Claim
348 words
An apparatus for delivering freshly prepared liquid body treatment composition comprising first and second liquid components to a point of use therefore which comprises: a) a housing having a reservoir-receiving support surface and a reservoir-mounting wall surface; b) first and second reservoirs securely, but removably, received on the support surface of the housing in a predetermined position relative to the mounting wall surface, the first and second reservoirs containing the first and second liquid components, respectively, of the body treatment composition, each reservoir possessing - an enclosure for the liquid, - a pressure conduit having an inlet communicating with the exterior of the reservoir and positioned on the side of the reservoir adjacent the top thereof, and an outlet positioned within the interior of the reservoir, the pressure conduit admitting gas at or above atmospheric pressure to the interior of the reservoir as liquid is dispensed therefrom, - a fluid conduit having an inlet adjacent the bottom of the reservoir and an outlet communicating with the exterior of the reservoir and positioned on the side of the reservoir adjacent the top thereof and in proximity to the inlet of the pressure conduit, the fluid conduit providing passage of liquid from the reservoir to the exterior thereof, - seal means occluding the inlet of the pressure conduit and the outlet of the fluid conduit; c) pressure and fluid conduit receiving members associated with the mounting wall of the housing such that upon installation of a reservoir on the support surface of the housing, said receiving members simultaneously penetrating the seal means occluding the inlet of the pressure conduit and the outlet of the fluid conduit and forming fluid-tight couples therewith; d) means cooperating with the pressure and fluid conduit receiving members for providing a flow of liquid from each of the first and second reservoirs to the intakes of a mixing manifold, said manifold effecting the mixing of the liquids to provide the liquid body treatment composition; and, e) means for delivering liquid body treatment composition from the outlet of the mixing manifold to a point of use therefor.
Claim 3
Dependent Claim
25 words
The apparatus of Claim 1 which further comprises means for heating the liquid body treatment composition prior to its delivery to the point of use.
Claim 4
Dependent Claim
239 words
The apparatus of Claim 2 wherein the heating means comprises - a heat sink, - an electrical resistance heating element in thermal transfer-contact with at least one surface of, or embedded within, the heat sink such that when electrical power is delivered to the heating element, heat is transferred therefrom to the heat sink and when the delivery of electrical power to the heating element is temporarily interrupted, residual heat in the heating element is transferred therefrom to the heat sink, the total quantity of heat transferred to the heat sink from the heating element not exceeding the heat capacity of the heat sink so that the temperature of the heat sink remains relatively constant both when electrical power is being delivered to the heating element and when the delivery of electrical power to the heating element is temporarily interrupted, and - a conduit for the flow of liquid body treatment composition to be heated to a predetermined temperature substantially corresponding to the temperature of the heat sink, the conduit having an inlet for admitting the liquid at a temperature below the predetermined temperature and an outlet for discharging the liquid at the predetermined temperature, the conduit being embedded within the heat sink such that heat is transferred from the heat sink to liquid present in the conduit raising the temperature of the liquid from the temperature at the conduit inlet to the predetermined temperature at the conduit outlet.
Claim 5
Dependent Claim
36 words
The apparatus of Claim 3 wherein the heating means further comprises control means for regulating the intermittent delivery and interruption of electrical power to the heating element in response to the temperature of the heat sink.
Claim 6
Dependent Claim
36 words
The apparatus of Claim 3 wherein the heating means further comprises means for discontinuing the delivery of electrical power to the heating element to prevent the temperature of the heat sink from exceeding a predetermined level.
Claim 7
Dependent Claim
42 words
The apparatus of Claim 4 wherein said regulating means is operable to maintain the temperature of the liquid body treatment composition at the conduit discharge at or about the normal temperature of a body with which the liquid is to be contacted.
Claim 8
Dependent Claim
43 words
The apparatus of Claim 1 wherein the means for providing a flow of liquid from a reservoir is a source of pressurized gas which is internal or external to housing (a), said pressurized gas being admitted to the reservoir through its pressure conduit.
Claim 9
Dependent Claim
18 words
The apparatus of Claim 7 wherein the source of pressurized gas is a compressor disposed within housing (a).
Claim 10
Dependent Claim
41 words
The apparatus of Claim 1 wherein the means for providing a flow of liquid from a reservoir is a pump having its intake coupled to the fluid conduit receiving member and its output coupled to the intake of the mixing manifold.
Claim 11
Dependent Claim
14 words
The apparatus of Claim 9 wherein the pump is a positive displacement type pump.
Claim 12
Dependent Claim
13 words
The apparatus of Claim 9 wherein the pump is a reciprocating piston-type pump.
Claim 13
Dependent Claim
15 words
The apparatus of Claim 9 in which a separate pump is associated with each reservoir.
Claim 14
Dependent Claim
16 words
The apparatus of Claim 12 in which each pump is driven by a common drive means.
Claim 15
Dependent Claim
23 words
The apparatus of Claim 1 which further comprises means for regulating the delivery of the liquid body treatment composition on a demand basis.
Claim 16
Dependent Claim
24 words
The apparatus of Claim 1 which further comprises valve means for regulating the delivery of the liquid body treatment composition on a demand basis.
Claim 17
Dependent Claim
14 words
The apparatus of Claim 1 wherein the valve means comprise separate solenoid operated valves.
Claim 18
Dependent Claim
50 words
The apparatus of Claim 1 wherein the means for delivering liquid body treatment composition from the outlet of the mixing manifold to the point of use comprises a flexible conduit coupled at one end to the outlet of the mixing manifold and at the other end to an operator-controlled handpiece.
Claim 19
Dependent Claim
149 words
A reservoir for storing and dispensing liquid which comprises: a) an enclosure for the liquid; b) a pressure conduit having an inlet communicating with the exterior of the reservoir and positioned on the side of the reservoir adjacent the top thereof, and an outlet positioned within the interior of the reservoir, the pressure conduit admitting gas at or above atmospheric pressure to the interior of the reservoir as liquid is dispensed therefrom; c) a fluid conduit having an inlet adjacent the bottom of the reservoir and an outlet communicating with the exterior of the reservoir and positioned on the side of the container adjacent the top thereof and in proximity to the inlet of the pressure conduit, the fluid conduit providing passage of liquid from the reservoir to the exterior thereof; and, d) seal means occluding the inlet of the pressure conduit and the outlet of the fluid conduit.
Claim 20
Dependent Claim
149 words
A reservoir for storing and dispensing liquid which comprises: a) an enclosure for the liquid; b) a pressure conduit having an inlet communicating with the exterior of the reservoir and positioned on the side of the reservoir adjacent the top thereof, and an outlet positioned within the interior of the reservoir, the pressure conduit admitting gas at or above atmospheric pressure to the interior of the reservoir as liquid is dispensed therefrom; c) a fluid conduit having an inlet adjacent the bottom of the reservoir and an outlet communicating with the exterior of the reservoir and positioned on the side of the container adjacent the top thereof and in proximity to the inlet of the pressure conduit, the fluid conduit providing passage of liquid from the reservoir to the exterior thereof; and, d) seal means occluding the inlet of the pressure conduit and the outlet of the fluid conduit.
Claim 21
Independent Claim
92 words
A method for delivering a freshly prepared liquid body treatment composition comprising first and second liquid components to a point of use therefor which comprises: a) introducing a first liquid component dispensed from a first reservoir to an intake of a mixing manifold; b) introducing a second liquid component from a second reservoir to an intake of the mixing manifold; c) effecting mixing of the first and second liquid components to provide the liquid body treatment composition; and, d) delivering the freshly prepared liquid body treatment composition to the site of use.
Claim 22
Independent Claim
92 words
A method for delivering a freshly prepared liquid body treatment composition comprising first and second liquid components to a point of use therefor which comprises: a) introducing a first liquid component dispensed from a first reservoir to an intake of a mixing manifold; b) introducing a second liquid component from a second reservoir to an intake of the mixing manifold; c) effecting mixing of the first and second liquid components to provide the liquid body treatment composition; and, d) delivering the freshly prepared liquid body treatment composition to the site of use.
Claim 23
Dependent Claim
17 words
The method of Claim 19 wherein the liquid body treatment composition is one for treating carious lesions.
References Cited (Backward Citations)
No citation records indexed.
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