Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
25 words
The osmotic dispenser as defined by claim 1, wherein the barrer (3) defines a wall member common to each of said compartments (1) and (2).
Claim 2
Dependent Claim
25 words
The osmotic dispenser as defined by claim 1, wherein the active agent is selected from the group consisting of a drug and a bio-affecting composition.
Claim 3
Dependent Claim
22 words
The osmotic dispenser as defined by claim 1, wherein the active agent contained therein is in the form of a semisolid formulation.
Claim 4
Dependent Claim
24 words
The osmotic dispenser as defined by claim 1, wherein the solution exhibiting an osmotic pressure gradient against water is a saturated aqueous salt solution.
Claim 5
Dependent Claim
19 words
The osmotic dispenser as defined by claim 5, wherein the saturated salt solution contains excess solute in solid form.
Claim 6
Dependent Claim
53 words
The osmotic dispenser as defined by claim 1, wherein the first helical compartment (1) is comprised of a member selected from the group consisting of polyethylene, metal-foil polyethylene laminate, neoprene rubber, rubber hydrochloride, polystyrene, polypropylene, polyethylene terephthalate, polyvinlyl chloride, polymethylmethacrylate, sheet metal, galvanized pipe, reinforced epoxy resin, natural gum rubber, and styreneacrylonitrile copolymer.
Claim 7
Dependent Claim
37 words
The osmotic dispenser as defined by claim 1, wherein the second helical compartment (2) is comprised of a member selected from the group consisting of cellulose acetate, silicone rubber, polyurethane, natural rubber and hydrolyzed ethylene/vinyl acetate copolymer.
Claim 8
Dependent Claim
25 words
The osmotic dispenser as defined by claim 1, wherein the active ingredient release means comprises a capillary tube forming an extension of helical compartment (1).
Claim 9
Dependent Claim
22 words
The osmotic dispenser as defined by claim 1, wherein the restricting means comprises a relatively rigid permeable housing member enveloping the device.
Claim 10
Dependent Claim
58 words
The osmotic dispenser as defined by claim 10, wherein the housing member is comprised of a member selected from the group consisting of perforated polystyrene, perforated polyethylene, perforated polypropylene, perforated polyethylene terephthalate, perforated polyvinyl chloride, perforated polymethylmethacrylate, perforated sheet metal, perforated reinforced epoxy resin, perforated galvanized pipe, porous sintered brass tubing, porous styrene/acrylonitrile polymer, and porous sintered polyethylene.
Claim 11
Dependent Claim
22 words
The osmotic dispenser as defined by claim 1, wherein the movable impervious barrier is a spherical body comprised of glass or plastic.
Claim 12
Dependent Claim
18 words
The osmotic dispenser as defined by claim 1, further comprising a ballast member to regulate the weight thereof.
Claim 13
Dependent Claim
58 words
The osmotic dispenser as defined by claim 1, wherein the osmotically effective solute is selected from the group consisting of magnesium sulphate, magnesium chloride, sodium chloride, potassium sulphate, sodium carbonate, sodium sulfite, sodium sulphate, sodium bicarbonate, potassium acid phthalate, calcium bicarbonate, potassium acid phosphate, raffinose, tartaric acid, succinic acid, calcium succinate, calcium lactate, magnesium succinate and mixtures thereof.