Compositions and methods for treating the eye
US-2020030394-A1 · Jan 30, 2020 · US
US11129862B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11129862-B2 |
| Application number | US-201816113073-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 27, 2018 |
| Priority date | Aug 30, 2017 |
| Publication date | Sep 28, 2021 |
| Grant date | Sep 28, 2021 |
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The present invention relates to compositions providing improved substantivity, comfort and/or feel to the eye upon application. The present invention further relates to compositions comprising a cellulose derivative in combination with tamarind seed extract and hyaluronic acid in ratios that mimic the physical properties of human tears on the eye.
Opening claim text (preview).
What is claimed is: 1. An ophthalmic composition, comprising: a.) a polymer mixture comprising i. a cellulose derivative; ii a tamarind seed extract; and iii hyaluronic acid; b.) a polyquaternium compound selected from polyquaternium-1, polyquaternium-10, polyquaternium-42 or mixtures; c.) from 0.4% w/v to about 1.5% w/v of the total composition of a polyol and d.) an aqueous component comprising greater than about 50% by weight, of the total composition, of water wherein the total concentration of the polymer mixture of cellulose derivative, tamarind seed extract and hyaluronic acid is between greater than about 0.4% to about 0.9%, by weight, of the total composition and further wherein the cellulose derivative, tamarind seed extract and hyaluronic acid are combined at a ratio of: 1 to 10 parts cellulose derivative: 1 to 4 parts tamarind seed extract: 1 to 2 parts hyaluronic acid, to form the polymer mixture such that the composition has: i. a viscosity of from about 30 to 100 cps at zero shear as measured by the AR2000 Flow Test Method; and ii. a viscosity of less than 30 cps at a shear rate of blinking of 1/100 sec. as measured by the AR2000 Flow Test Method and wherein the composition is formulated as a sterile aqueous solution. 2. The composition of claim 1 wherein the cellulose derivative is selected from (hydroxyalkyl cellulose polymers, alkyl hydroxyalkyl cellulose polymers; methyl cellulose; methyl cellulose derivatives; hydroxymethycellulose derivatives; and mixtures thereof. 3. The composition of claim 2 , wherein the hydroxyalkyl cellulose polymers are selected from hydroxyethyl cellulose, hydroxypropyl cellulose and mixtures thereof. 4. The composition of claim 2 , wherein the alkyl hydroxyalkyl cellulose polymers is cetyl hydroxyethyl cellulose. 5. The composition of claim 2 , wherein the methyl cellulose derivative is selected from carboxymethyl cellulose, hydroxymethyl cellulose, a hydroxymethyl cellulose derivative or mixtures thereof. 6. The composition of claim 5 , wherein the hydroxymethyl cellulose derivative is selected from hydroxypropyl methylcellulose, hydroxybutyl methyl cellulose or mixtures thereof. 7. The composition of claim 1 , wherein any non-ionic and anionic polymers in the composition are present at a the total concentration from about 0.4% to about 1.0%, by weight, of the total composition. 8. The composition of claim 1 , wherein the surface tension of the composition ranges from about 40.8 dynes/cm to 51.9 dynes/cm as measured by the Rame-Hart—DROPimage Advanced Software Pendant Drop Method. 9. The composition of claim 1 , wherein the rate of moisture loss for the composition is less than 1 mg/3 minutes at 37° C. and 70% relative humidity as measured by the DVS Intrinsic Measurement System and DVS-Intrinsic Control Software Method. 10. The composition of claim 1 , wherein the composition has an elastic modulus G′ greater than 0.70 (or about 0.70) Pascals and a phase angle δ of from about 40° to about 65° as measured by the Bohlin CVOR Rheometer Visco-Elastic Property Test Method. 11. The composition of claim 1 , wherein the composition has: i. a surface tension ranging from about 40.8 dynes/cm to 51.9 dynes/cm as measured by the Rame-Hart—DROPimage Advanced Software Pendant Drop Method; ii. a rate of moisture loss of less than 1 mg/3 minutes at 37° C. and 70% relative humidity as measured by the DVS Intrinsic Measurement System and DVS-Intrinsic Control Software Method; iii. an elastic modulus G′ greater than 0.70 (or about 0.70) Pascals and a phase angle δ of from about 40° to about 65° as measured by the Bohlin CVOR Rheometer Visco-Elastic Property Test Method.
Polysaccharides; Derivatives thereof, e.g. gums, starch, alginate, dextrin, hyaluronic acid, chitosan, inulin, agar or pectin · CPC title
Cellulose; Derivatives thereof · CPC title
Eye, e.g. artificial tears · CPC title
Celluloses · CPC title
Polysaccharides, i.e. having more than five saccharide radicals attached to each other by glycosidic linkages; Derivatives thereof, e.g. ethers, esters · CPC title
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