Ophthalmic preparation for use as artificial tear
First Claim
1. An ophthalmic aqueous preparation for use as artificial tear containing a viscosity thickener consisting of at least one hyaluronic acid salt, at a concentration of 0.05 to 2% by weight, as well as the following quantities of ionic species:
- 40-95 mmol/l of sodium ions, 12-28 mmol/l of potassium ions, 0.4-1,5 mmol/l of calcium ions, 0.4-1.0 mmol/l of magnesium ions, 50-100 mmol/l of chloride ions, 7-20 mmol/l of phosphate ions, 0.7-2.5 mmol/l of citrate ions, and water,said composition having a viscosity versus shear rate, measured at 32°
C. from 10.0 to 200.0 cps at a shear rate of 2 sec-1 and from 10 to 5 cps at a shear rate of 1000 sec-1, and an osmolarity from 140 to 280 mOsm/l.
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Accused Products
Abstract
Ophthalmic preparation for use as artificial tear containing hyaluronate as a viscosity thickener, preferably in the form of sodic salt and having a molecular weight of 500,000 to 4,000,000 daltons, at a concentration of 0.05 to 2% by weight, as well as the following minimum quantities of ionic species: 40 mmol/l sodium ion, 12 mmol/l potassium ion, 0.4 mmol/l calcium ion, 0.4 mmol/l magnesium ion, 50 mmol/l chloride ion, 7 mmol/l phosphate ion and, preferably, 0.7 mmol/l citrate ion. The formulation, which as an osmolarity of 140 to 280 mOsm/l, is useful for the treatment of keratoconjunctivitis sicca and may be administered whenever the use of artifical tears is advisable, e.g. for the treatment of eye irritations caused by environmental conditions or contact lenses.
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Citations
33 Claims
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1. An ophthalmic aqueous preparation for use as artificial tear containing a viscosity thickener consisting of at least one hyaluronic acid salt, at a concentration of 0.05 to 2% by weight, as well as the following quantities of ionic species:
- 40-95 mmol/l of sodium ions, 12-28 mmol/l of potassium ions, 0.4-1,5 mmol/l of calcium ions, 0.4-1.0 mmol/l of magnesium ions, 50-100 mmol/l of chloride ions, 7-20 mmol/l of phosphate ions, 0.7-2.5 mmol/l of citrate ions, and water,
said composition having a viscosity versus shear rate, measured at 32°
C. from 10.0 to 200.0 cps at a shear rate of 2 sec-1 and from 10 to 5 cps at a shear rate of 1000 sec-1, and an osmolarity from 140 to 280 mOsm/l. - View Dependent Claims (2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 13, 14)
- 40-95 mmol/l of sodium ions, 12-28 mmol/l of potassium ions, 0.4-1,5 mmol/l of calcium ions, 0.4-1.0 mmol/l of magnesium ions, 50-100 mmol/l of chloride ions, 7-20 mmol/l of phosphate ions, 0.7-2.5 mmol/l of citrate ions, and water,
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7. An ophthalmic aqueous preparation for use as artificial tear, having the following composition:
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space="preserve" listing-type="tabular">______________________________________ mg/100 ml mmol/l ______________________________________ sodium hyaluronate 250 ˜
6.2 -- NaCl 279.2 47.77 KCl 103.3 13.85 Na.sub.2 HPO.sup.4.12H.sub.2 O 322.2 9.0 Na.sub.3 citrate 26.0 1.05 MgCl.sub.2.6H.sub.2 O 9.2 0.45 CaCl.sub.2.2H.sub.2 O 6.9 0.6 ______________________________________wherein sodium hyaluronate has molecular weight 800,000-1,600,000, and the solution has pH=7.32 and osmolarity=150 mOsm/l, and a viscosity of 28 Cps at a shear rate of 2 sec-1.
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15. An ophthalmic aqueous preparation for use as artificial tear in the treatment of a disease selected from the group consisting of dry eye syndrome and a state of eye irritation, containing a viscosity thickener consisting of at least one hyaluronic acid salt, at a concentration of 0.05 to 2% by weight, as well as the following quantities of ionic species:
- 49-95 mmol/l of sodium ions, 12-28 mmol/l of potassium ions, 0.4-1,5 mmol/l of calcium ions, 0.4-1.0 mmol/l of magnesium ions, 50-100 mmol/l of chloride ions, 7-20 mmol/l of phosphate ions, 0.7-2.5 mmol/l of citrate ions, and water,
said composition having a viscosity versus shear rate, measured at 32°
C., from 10.0 to 200.0 cps at a shear rate of 2 sec-1 and from 10 to 5 cps at a shear rate of 1000 sec-1, and an osmolarity from 140 to 280 mOsm/l. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 31, 32, 33)
- 49-95 mmol/l of sodium ions, 12-28 mmol/l of potassium ions, 0.4-1,5 mmol/l of calcium ions, 0.4-1.0 mmol/l of magnesium ions, 50-100 mmol/l of chloride ions, 7-20 mmol/l of phosphate ions, 0.7-2.5 mmol/l of citrate ions, and water,
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24. An ophthalmic aqueous preparation for use as artificial tear consisting essentially of at least one hyaluronic acid salt, at a concentration of 0.05 to 2% by weight, as well as the following quantities of ionic species:
- 40-95 mmol/l of sodium ions, 12-28 mmol/l of potassium ions, 0.4-1,5 mmol/l of calcium ions, 0.4-1.0 mmol/l of magnesium ions, 50-100 mmol/l of chloride ions, 7-20 mmol/l of phosphate ions, 0.7-2.5 mmol/l of citrate ions, and water,
said composition having a viscosity versus shear rate, measured at 32°
C., from 10.0 to 200.0 cps at a shear rate of 2 sec-1 and from 10 to 5 cps at a shear rate of 1000 sec-1, and an osmolarity from 140 to 280 mOsm/l. - View Dependent Claims (25, 26, 27, 28, 29, 30)
- 40-95 mmol/l of sodium ions, 12-28 mmol/l of potassium ions, 0.4-1,5 mmol/l of calcium ions, 0.4-1.0 mmol/l of magnesium ions, 50-100 mmol/l of chloride ions, 7-20 mmol/l of phosphate ions, 0.7-2.5 mmol/l of citrate ions, and water,
Specification