GB1167285A - Method of Preserving Hydrophilic Gels - Google Patents
Method of Preserving Hydrophilic GelsInfo
- Publication number
- GB1167285A GB1167285A GB01045/68A GB1104568A GB1167285A GB 1167285 A GB1167285 A GB 1167285A GB 01045/68 A GB01045/68 A GB 01045/68A GB 1104568 A GB1104568 A GB 1104568A GB 1167285 A GB1167285 A GB 1167285A
- Authority
- GB
- United Kingdom
- Prior art keywords
- exchanger
- silver
- solution
- bags
- preserving
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000000499 gel Substances 0.000 title abstract 4
- 238000000034 method Methods 0.000 title abstract 2
- 239000000243 solution Substances 0.000 abstract 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 abstract 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 abstract 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract 3
- 150000001768 cations Chemical class 0.000 abstract 3
- 229910052709 silver Inorganic materials 0.000 abstract 3
- 239000004332 silver Substances 0.000 abstract 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 abstract 2
- 239000007864 aqueous solution Substances 0.000 abstract 2
- -1 silver ions Chemical class 0.000 abstract 2
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 abstract 2
- NWZSZGALRFJKBT-KNIFDHDWSA-N (2s)-2,6-diaminohexanoic acid;(2s)-2-hydroxybutanedioic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O.NCCCC[C@H](N)C(O)=O NWZSZGALRFJKBT-KNIFDHDWSA-N 0.000 abstract 1
- CHRJZRDFSQHIFI-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;styrene Chemical class C=CC1=CC=CC=C1.C=CC1=CC=CC=C1C=C CHRJZRDFSQHIFI-UHFFFAOYSA-N 0.000 abstract 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 abstract 1
- 229920000742 Cotton Polymers 0.000 abstract 1
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 abstract 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 abstract 1
- 239000004952 Polyamide Substances 0.000 abstract 1
- 239000004743 Polypropylene Substances 0.000 abstract 1
- 239000004793 Polystyrene Substances 0.000 abstract 1
- 229910021529 ammonia Inorganic materials 0.000 abstract 1
- 239000012153 distilled water Substances 0.000 abstract 1
- 238000010828 elution Methods 0.000 abstract 1
- IKDUDTNKRLTJSI-UHFFFAOYSA-N hydrazine monohydrate Substances O.NN IKDUDTNKRLTJSI-UHFFFAOYSA-N 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 239000012528 membrane Substances 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 229910017604 nitric acid Inorganic materials 0.000 abstract 1
- 238000005192 partition Methods 0.000 abstract 1
- 230000035515 penetration Effects 0.000 abstract 1
- 229920002647 polyamide Polymers 0.000 abstract 1
- 229920000728 polyester Polymers 0.000 abstract 1
- 229920000642 polymer Polymers 0.000 abstract 1
- 229920001155 polypropylene Polymers 0.000 abstract 1
- 229920002223 polystyrene Polymers 0.000 abstract 1
- 229910001961 silver nitrate Inorganic materials 0.000 abstract 1
- 239000004753 textile Substances 0.000 abstract 1
- 238000005406 washing Methods 0.000 abstract 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D11/00—Producing optical elements, e.g. lenses or prisms
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L12/00—Methods or apparatus for disinfecting or sterilising contact lenses; Accessories therefor
- A61L12/08—Methods or apparatus for disinfecting or sterilising contact lenses; Accessories therefor using chemical substances
- A61L12/088—Heavy metals
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/16—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using chemical substances
- A61L2/18—Liquid substances or solutions comprising solids or dissolved gases
Landscapes
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Animal Behavior & Ethology (AREA)
- Veterinary Medicine (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Health & Medical Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Epidemiology (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Ophthalmology & Optometry (AREA)
- Apparatus For Disinfection Or Sterilisation (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Eyeglasses (AREA)
Abstract
1,167,285. Preserving polymeric gels. CESKOSLOVENSKA AKADEMIE VED. 7 March, 1968 [15 March, 1967], No. 11045/68. Heading ASE. [Also in Divisions B8 and G2] A method of preserving and storing swelled hydrophillic polymeric gels, e.g. in the form of contact lenses or prostheses, in aqueous solution comprises a container in which the solution is contacted by cation exchanger impregnated with silver reduced from silver ions. In one embodiment contact lenses are stored in aqueous solution above a porous bag of textile material e.g. polyamide, polyester, cotton &c. containing a cation exchanger impregnated with silver metal. In a modification, the exchanger is in a compartment between two stoppered compartments each holding a lens in solution. Further containers use either an exchanger in the form of a membrane between two perforated partitions or have the aqueous compartment lined with the exchanger. In a further form, the exchanger may rest below a false bottom in e.g. a polystyrene or polypropylene container, the gels being deposited on or suspended above the bottom. The silver exchanger may be formed by elution of a sulphonated styrene divinyl benzene polymer, or a carboxylic cation exchanger e.g. a methacrylic acid and divinvl benzene co-oplymer, with 10% hydrochloric acid, 5% nitric acid, water to neutralise then followed by a reaction with 5% silver nitrate solution and rinsing with distilled water. The reduction is carried out by flooding the exchanger with 10% hydrazine hydrate solution in 15% aqueous ammonia and washing with water to remove all traces of ammonia. The exchanger may be macroporous and the grain size should be large enough to prevent penetration of a bag wall. The bags are formed by stitching together both longitudinal edges of a folded web, followed by transverse spaced stitching and cutting the web down the middle to form two joined lengths of bags. After filling, the bag tops are stitched together and the bags separated.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS188367 | 1967-03-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1167285A true GB1167285A (en) | 1969-10-15 |
Family
ID=5354314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB01045/68A Expired GB1167285A (en) | 1967-03-15 | 1968-03-07 | Method of Preserving Hydrophilic Gels |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US3591329A (en) |
| DE (1) | DE1667942B2 (en) |
| FR (1) | FR1566641A (en) |
| GB (1) | GB1167285A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2141836A (en) * | 1983-06-17 | 1985-01-03 | Ruxley Holdings | Measurement of contact lens in plastics sachet |
| ES2593473A1 (en) * | 2016-10-24 | 2016-12-09 | Disop, S.A. | Ophthalmological product, method of obtaining and method of cleaning and disinfecting contact lenses (Machine-translation by Google Translate, not legally binding) |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3038800C2 (en) * | 1980-10-14 | 1982-07-08 | Titmus Eurocon Kontaktlinsen Gmbh & Co Kg, 8750 Aschaffenburg | Containers for the care and / or storage of contact lenses |
| US5340583A (en) * | 1993-05-06 | 1994-08-23 | Allergan, Inc. | Antimicrobial lenses and lens care systems |
| US7678836B2 (en) * | 1999-11-04 | 2010-03-16 | Fxs Ventures, Llc | Method for rendering a contact lens wettable |
| US7179849B2 (en) * | 1999-12-15 | 2007-02-20 | C. R. Bard, Inc. | Antimicrobial compositions containing colloids of oligodynamic metals |
| US6716895B1 (en) | 1999-12-15 | 2004-04-06 | C.R. Bard, Inc. | Polymer compositions containing colloids of silver salts |
| US8557868B2 (en) * | 2000-11-04 | 2013-10-15 | Fxs Ventures, Llc | Ophthalmic and contact lens solutions using low molecular weight amines |
| JP4580143B2 (en) * | 2000-11-08 | 2010-11-10 | エフエックスエス・ベンチャーズ・エルエルシー | L-histidine in ophthalmic solution |
| US20070098813A1 (en) * | 2000-11-08 | 2007-05-03 | Fxs Ventures, Llc | Ophthalmic and contact lens solutions with a peroxide source and a preservative |
| US9492582B2 (en) * | 2000-11-08 | 2016-11-15 | Fxs Ventures, Llc | Ophthalmic and contact lens solutions containing simple saccharides as preservative enhancers |
| US20070104744A1 (en) * | 2000-11-08 | 2007-05-10 | Fxs Ventures, Llc | Ophthalmic and contact lens solutions containing forms of vitamin b |
| CA2428985C (en) * | 2000-11-08 | 2011-05-24 | Bio-Concept Laboratories | Improved ophthalmic and contact lens solutions containing simple saccharides as preservative enhancers |
| US9308264B2 (en) | 2000-11-08 | 2016-04-12 | Fxs Ventures, Llc | Ophthalmic contact lens solutions containing forms of vitamin B |
| AU2002357050A1 (en) | 2001-12-03 | 2003-06-17 | C.R. Bard, Inc. | Microbe-resistant medical device, microbe-resistant polymeric coating and methods for producing same |
| US7939501B2 (en) * | 2003-04-15 | 2011-05-10 | Smith Francis X | Ophthalmic and contact lens solutions containing peptides as preservative |
| US8425926B2 (en) * | 2003-07-16 | 2013-04-23 | Yongxing Qiu | Antimicrobial medical devices |
| WO2005088351A2 (en) * | 2004-03-17 | 2005-09-22 | Thorkild Andersen | Contact lens, container and insert for avoiding infection of the eye |
| CA2675505C (en) * | 2007-01-31 | 2015-01-06 | Novartis Ag | Antimicrobial medical devices including silver nanoparticles |
-
1968
- 1968-03-07 DE DE1968C0044787 patent/DE1667942B2/en active Granted
- 1968-03-07 GB GB01045/68A patent/GB1167285A/en not_active Expired
- 1968-03-12 FR FR1566641D patent/FR1566641A/fr not_active Expired
- 1968-03-13 US US712609A patent/US3591329A/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2141836A (en) * | 1983-06-17 | 1985-01-03 | Ruxley Holdings | Measurement of contact lens in plastics sachet |
| ES2593473A1 (en) * | 2016-10-24 | 2016-12-09 | Disop, S.A. | Ophthalmological product, method of obtaining and method of cleaning and disinfecting contact lenses (Machine-translation by Google Translate, not legally binding) |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1667942A1 (en) | 1971-06-16 |
| DE1667942B2 (en) | 1977-05-12 |
| FR1566641A (en) | 1969-05-09 |
| US3591329A (en) | 1971-07-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PLE | Entries relating assignments, transmissions, licences in the register of patents | ||
| PCNP | Patent ceased through non-payment of renewal fee |