WO2005115411A1 - 透明組織可視化剤 - Google Patents
透明組織可視化剤 Download PDFInfo
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- WO2005115411A1 WO2005115411A1 PCT/JP2005/009846 JP2005009846W WO2005115411A1 WO 2005115411 A1 WO2005115411 A1 WO 2005115411A1 JP 2005009846 W JP2005009846 W JP 2005009846W WO 2005115411 A1 WO2005115411 A1 WO 2005115411A1
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- transparent tissue
- fine particles
- visualizing agent
- agent according
- transparent
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/70—Carbohydrates; Sugars; Derivatives thereof
- A61K31/715—Polysaccharides, i.e. having more than five saccharide radicals attached to each other by glycosidic linkages; Derivatives thereof, e.g. ethers, esters
- A61K31/716—Glucans
- A61K31/718—Starch or degraded starch, e.g. amylose, amylopectin
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/70—Carbohydrates; Sugars; Derivatives thereof
- A61K31/715—Polysaccharides, i.e. having more than five saccharide radicals attached to each other by glycosidic linkages; Derivatives thereof, e.g. ethers, esters
- A61K31/716—Glucans
- A61K31/722—Chitin, chitosan
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/74—Synthetic polymeric materials
- A61K31/765—Polymers containing oxygen
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K49/00—Preparations for testing in vivo
- A61K49/001—Preparation for luminescence or biological staining
- A61K49/0063—Preparation for luminescence or biological staining characterised by a special physical or galenical form, e.g. emulsions, microspheres
- A61K49/0069—Preparation for luminescence or biological staining characterised by a special physical or galenical form, e.g. emulsions, microspheres the agent being in a particular physical galenical form
- A61K49/0089—Particulate, powder, adsorbate, bead, sphere
- A61K49/0091—Microparticle, microcapsule, microbubble, microsphere, microbead, i.e. having a size or diameter higher or equal to 1 micrometer
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/0012—Galenical forms characterised by the site of application
- A61K9/0048—Eye, e.g. artificial tears
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P27/00—Drugs for disorders of the senses
- A61P27/02—Ophthalmic agents
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P27/00—Drugs for disorders of the senses
- A61P27/02—Ophthalmic agents
- A61P27/12—Ophthalmic agents for cataracts
Definitions
- the present invention relates to a transparent tissue visualizing agent for improving the visibility of a transparent tissue of an eye at the time of surgery by injecting or spraying the transparent tissue of the eye, and a transparent tissue of the eye thereby. And a method for visualizing the image to improve visibility.
- the eyeball also absorbs external light and projects it on photoreceptors, so that a large part of the eyeball is composed of a transparent tissue, which corresponds to the cornea, lens, and vitreous body S.
- the vitreous is in contact with the retina, and in many diabetic retinopathies and other retinal diseases, provides a scaffold for the proliferating tissue of the retina. Tissues that have grown into the vitreous can form fibers, pull the retina and cause detachment, and leaving it can lead to blindness. Therefore, the vitreous body containing such proliferating tissue is often completely removed by surgery.
- vitreous body removal surgery it is required to remove as much as possible the proliferative tissue adhered to the retina and the vitreous body as a scaffold for growth.
- the surgery is performed while flowing the intraocular perfusion solution for surgery into the eyeball, but the vitreous body is a transparent tissue and has almost no difference in refractive index from the intraocular perfusion solution.
- the transparent tissue lacks visibility as it is, making it difficult to determine its position, and it is not easy to completely remove it.
- a steroid suspending agent such as a triamcinolone formulation (Kenacort-A: registered trademark) is injected into the vitreous cavity (the hollow part formed by aspirating and removing the central part of the vitreous body) during vitreous surgery. This is visualized by dispersing and attaching to the vitreous body (see Non-Patent Document 1).
- This method increases the visibility of the vitreous in the surgical field, facilitates surgery, and allows complete removal of the vitreous.
- an increase in intraocular pressure and progression of cataract as side effects have been reported (see Non-Patent Documents 2 and 3).
- cataract surgery For example, in cataract surgery, the nucleus and cortex in the lens capsule are removed, and an intraocular lens is inserted. It is known that they often proliferate and become turbid through the skin, causing secondary cataract. For this reason, cataract surgery requires a means to visualize the transparent cortex and facilitate complete removal.
- Patent document l WO 99/058159
- Non-patent Reference 1 Sakamoto, T., et al., Uraefes Arcnive for Clinical and Experimental Ophthalmology, 240: p.423 (2002).
- Patent Document 2 Challa, J.K. et al., Australian and New Zealand Journal of Ophthalmol ogy, 26: p.277 (1998)
- Non-Patent Document 3 Wingate, R.J. et al., Australian and New Zealand Journal of Ophthalmology, 27: p.431 (1999)
- the present invention is a means for enhancing the visibility of a transparent tissue of the eye, such as a vitreous body, a crystalline lens, or a cornea, which achieves sufficient visibility.
- An object is to provide a means that is easy to use and excellent in safety.
- the present inventors have found that a polymer compound, which has no pharmacological action and gradually dissolves in body fluids, is excreted and discharged with the turnover of fluid in the eye.
- a polymer compound which has no pharmacological action and gradually dissolves in body fluids
- the fine particles can be used as long as they exist as fine particles. Can adhere to the surface of transparent tissue and scatter visible light in the surgical field, achieving excellent visibility without any safety concerns.
- the present inventors have found that the present invention can be achieved and have further studied to complete the present invention. That is, the present invention provides the following.
- a transparent tissue visualizing agent comprising fine particles which also have a high molecular compound strength, and which is brought into contact with the transparent tissue of the eye to enhance its visibility.
- the polymer compound having solubility in water The transparent tissue visualizing agent according to the above item 4, which is selected from an acrylic polymer compound and a styrene polymer compound.
- the polymer compound is a starch, a soluble starch, a partially alpha-immobilized starch, a cenorellose, an acetinoresenorelose, a hydroxypropinolemethinoresenolerose, a chitosan, a chitin, a dextran, a polylactic acid, a polylactic acid, a lactic acid 'Glycolic acid copolymer, polyhydroxybutyric acid, polyhydroxyvaleric acid, polycaprolactone, hydroxybutyric acid'glycolic acid copolymer, lactic acid'coprolatatatone copolymer, polyethylene succinate, and polybutylene succinate, sodium polyacrylate,
- the transparent tissue visualizing agent according to any one of the above 1 to 3, which is selected from the group consisting of sodium methacrylate and sodium polystyrene sulfonate.
- the polyhydric alcohol is mannitol, the transparent tissue visualizing agent of the above 9 or 10
- a method for improving the visibility of a transparent tissue of an eye comprising contacting a composition comprising the fine particles according to any one of the above 1 to 17 with the transparent tissue of the eye.
- the present invention having the above-mentioned configuration makes it possible to significantly improve the visibility of a vitreous body, a lens, and a cornea, which are transparent tissues of an eye, by bringing the transparent tissues into contact with a transparent tissue that is hardly visible in an operation field. , Thus facilitating the procedure in such surgery and facilitating reliable achievement of the surgical purpose.
- the use of fine particles having no pharmacological action does not cause unnecessary drug response or side effects to the living body.
- soluble and Z- or biodegradable microparticles are used, they will adhere to the eye tissue after surgery and become fine. Even if part remains, there is no further inconvenience because it dissolves and Z or decomposes with the passage of time and loses eye tissue strength due to discharge or absorption.
- FIG. 1 A schematic cross-sectional view showing one embodiment of a double-chamber type 1 syringe-filled transparent tissue visualizing agent
- the transparent tissue visualizing agent of the present invention improves the visibility of the transparent tissue by injecting or spraying into the transparent tissue of the eye during ophthalmic surgery.
- vitreous removal such as diabetic retinopathy, retinal vein occlusion, macular edema, diabetic maculopathy, macular hole, epiretinal dysplasia, and rhegmatogenous retinal detachment.
- the visibility of the vitreous body is improved, so that it can be easily confirmed by eyes, for example, in an operation field through a surgical microscope.
- injection or dispersal into the lens capsule causes numerous counts of fine particles to adhere to the nucleus and cortex of the lens and follow the shape of the nucleus and cortex. As light scattering occurs, their visibility is similarly improved.
- the polymer compound a polymer compound which is pharmacologically inactive against tissues and the body of mammalian eyes, particularly human eyes, can be used.
- the molecular weight of the polymer compound used in the present invention is not particularly limited, as long as it is solid at normal temperature and can be formed into particles.
- the molecular weight is 500 or more, preferably 1000 or more, more preferably 1500 or more, particularly preferably 2000 or more, usually 20000 or less, preferably 150,000 or less, more preferably 100,000 or less, particularly preferably 50,000 or less. May be outside these ranges as long as the object of the present invention can be achieved.
- the ability to use a variety of polymer compounds [0014] The ability to use a variety of polymer compounds [0014] The resulting microparticles must completely dissolve their lg in less than 30 mL of water at 30 ° C within 30 minutes at 20 ° C. It is preferable that it cannot be performed. Such solubility is usually strong enough to remain undissolved as a light scattering source during a single surgery. This solubility ranges from “slightly soluble” specified in the Japanese Pharmacopoeia, 14th Edition, to “slightly soluble”, “extremely insoluble”, and “almost insoluble”. Applicable.
- the pharmacopoeia defines the solubility based on the degree of dissolution within 30 minutes when the solute lg is placed in a solvent and shaken vigorously at 20 ⁇ 5 ° C every 5 minutes for 30 seconds. According to the definition, when the fine particles lg are put in water at 20 ° C. and sufficiently stirred for 30 minutes, fine particles having a solubility of any of the following are preferably used.
- the polymer compound is in the form of a salt
- preferable examples thereof include a sodium salt, a potassium salt, and a hydrochloride, but are not limited thereto.
- the average particle diameter of the fine particles of the polymer compound there is no clear limitation on the average particle diameter of the fine particles of the polymer compound. However, considering ease of handling during use and scattering of visible light, it is usually 0.01 to 500 / ⁇ . Is more preferable, and more preferably 0.1 to 200 m, and still more preferably 1 to 60 m.
- the high molecular compound is one that is biodegradable or soluble in water. preferable. After the operation, even if there are fine particles remaining in the eye tissue, the fine particles are decomposed with time or dissolved as they are in the liquid in the eye tissue, and the eye is discharged with the turnover, or absorbed. This is because they disappear from eye tissues.
- biodegradable polymers can be used in the present invention.
- polymer compound used in the present invention there is no clear limitation on the degree of solubility in water.
- the polymer compound when the polymer compound is stirred at 37 ° C for 1 week with a large excess of water, it is sufficient that the polymer compound is soluble enough to dissolve. . Even if fine particles may remain in the eye after the operation, the amount is usually negligible, and it is only necessary to dissolve even gradually and lose the solid form.
- polymer compounds other than biodegradable polymers include acrylic polymers and styrene polymers, such as sodium polyacrylate, sodium methacrylate, and sodium polystyrene sulfonate. It is not limited to these.
- the transparent tissue visualizing agent of the present invention may contain one or both of a polybutyl-based compound and a polyhydric alcohol, together with fine particles that also have a high molecular compound power.
- Polyvinyl compounds and polyhydric alcohols have a favorable effect such as increasing the dispersibility of fine particles composed of high molecular compounds.
- Particularly preferred examples of the polybutyl-based compound include polybutylpyrrolidone and polybutyl alcohol, and particularly preferred examples of the polyhydric alcohol include mannitol.
- a water-soluble polybutyl compound or polyhydric alcohol having no pharmacological action can be appropriately used.
- the amount of the polyvinyl compound and the polyhydric alcohol to be used is usually from 0.05 to about LO parts by weight, based on 1 part by weight of the fine particles composed of the polymer compound, but is preferably within the range. Less However, there is some effect according to the amount, and even if it is large, there is no particular disadvantage.
- the transparent tissue visualizing agent of the present invention may be in the form of a powder or may be in the form of fine particles comprising a polymer compound dispersed in an aqueous medium (suspension agent).
- a powder form it may be used by spraying it on a transparent tissue of the eye as it is, and may be mixed with an intraocular perfusion solution and injected at the time of use.
- an intraocular perfusion solution eg, Ogard MA (registered trademark), Opegaard Neokit (registered trademark) manufactured by Senju Pharmaceutical Co., Ltd.
- artificial tears, etc. is used in a conventional manner. It can be used in suspension.
- the suspension When the suspension is provided in the form of a suspension, the suspension may be directly injected or dropped into a transparent tissue through an injection needle.
- the "aqueous medium" used to provide the transparent tissue visualizing agent of the present invention in the form of a suspension includes water and, if desired, an isotonic agent such as salts and saccharides, a buffering agent and the like.
- the content of the fine particles comprising the polymer compound in the suspension is adjusted to be in the range of 0.005 to 10 w / v%.
- the point at which the effect of improving the visibility can be obtained is also preferable, and 0.01 to 5 wZv% is more preferable. 0.1 to 2 wZv% is particularly preferable.
- visibility can be obtained even at a lower content, for example, 0.000 lwZv%, and a higher content can be used if there is no inconvenience in handling such as dispersion of fine particles. It may be outside this range. For convenience, it may be appropriately determined in the range of 0.01 to 5 wZv%.
- the concentration of any of them may be appropriately set in the range of 0.1 to 5 wZv%. Good. However, even if the concentration is lower than this range, there is some effect according to the amount, and if it is higher, there is no particular inconvenience.
- the transparent tissue visualizing agent of the present invention may be used as a powder as described above, or as fine particles in an aqueous medium.
- the aqueous medium used to disperse the powder into a suspension for use in surgery may be provided in a single mixing and draining means, separated from each other in a non-contact manner. Good. In this case, the aqueous medium may be the same as described above.
- the “mixing and discharging means” means that the powder and the aqueous medium, which are separated and enclosed, can be mixed by an external force and the formed mixture is mixed.
- Various double-chamber type syringes are well known as such as long as they can be discharged to the outside by an external operation.
- a double-chamber type syringe is typically a cylinder with a discharge channel to which a needle can be attached (or has a needle already attached) at the tip, and a syringe at the other end.
- the piston is inserted in a liquid-tight manner, and a movable partition in the front-rear direction is inserted in the middle part of the cylinder in a liquid-tight manner to form two front and rear chambers in the cylinder.
- An elongated, peripheral flow path extending in the front-rear direction over a range longer than the thickness of the partition is formed by recessing the inner surface of the cylinder outward.
- the front chamber is usually filled with a dry composition in powder form or the like, and the rear chamber is usually filled with a liquid composition (such as a buffer) as a medium to be mixed therewith.
- the movable partition is advanced in the cylinder using water pressure generated by advancing the piston inserted at the rear end to reach the vicinity of the center of the peripheral flow path, and the piston continues to advance.
- the liquid composition in the rear chamber is pushed into the front chamber through the peripheral flow path, and after the contents are mixed in the front chamber, the piston is pushed to further advance the movable partition to discharge the mixture.
- the procedure is also to discharge the flow path power.
- the transparent tissue visualizing agent of the present invention may be a pharmaceutically acceptable additive, for example, a tonicity agent (salts such as sodium chloride and potassium salt; sugars such as glycerol and glucose; sorbitol, Polyhydric alcohols such as mannitol and propylene glycol; boric acid, borax, etc.) , Buffers (phosphate buffer, acetate buffer, borate buffer, carbonate buffer, citrate buffer, Tris buffer, etc.), thickeners (hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxypropyl methylcellulose) , sodium carboxymethyl cellulose, Poribininore alcohol, poly Bulle pyrrolidone, polyethylene glycol, sodium alginate, etc.), stabilizers (sodium bisulfite, Asukorubin acid, sodium Asukorubin acid, dibutyl Le hydroxytoluene, etc.), P H modifier (hydrochloric acid, water Sodium oxide, phosphoric acid,
- the transparent tissue visualizing agent of the present invention may contain a pharmaceutically active ingredient.
- the pH thereof (or after mixing) is as follows: It is usually adjusted to be in the range of 4.0 to 8.0, preferably about 5.0 to 7.5.
- the present invention also provides a method for improving the visibility of a transparent tissue of an eye, comprising contacting a composition comprising the above-mentioned fine particles with the transparent tissue of the eye, and a transparent tissue of the eye.
- the present invention also provides the use of the above-mentioned fine particles for the production of a transparent tissue visualizing agent which is visualized by contacting the fine particles.
- the eyes (three birds, six eyes) were excised, and scissors were inserted into the limbus to remove the cornea.
- the iris and lens were removed to form a cup, and then the anterior segment side force was cut in a cross to open the cup.
- the vitreous body flowing out was removed, and the retina was exposed while the vitreous body was partially adhered.
- An aqueous preparation (suspension) containing lwZv% soluble starch having the following formulation was prepared, and about 100 L of the preparation was dropped into the retina. Observation of the formulation drop site using an optical microscope showed that soluble starch fine particles adhered to the vitreous body in all six eyes, thereby improving the visibility of the vitreous body
- Pig eyes purchased from a meat processing plant were used. Immediately after obtaining the pig eyes, the periocular tissues were cut off, and the eyes alone were immersed in a low-molecular-weight dextran solution (low-molecular-weight dextran L injection, Otsuka Pharmaceutical) and stored until the start of the test.
- a low-molecular-weight dextran solution low-molecular-weight dextran L injection, Otsuka Pharmaceutical
- Soluble starch manufactured by Nakarai Tester, reagent code 32131-42, standard GR (Guaranteed Reagent)
- PLA 0005 (Wako Pure Chemical Industries, D, L—polylactic acid (molecular weight 5000))
- Opegaard MA manufactured by Senju Pharmaceutical Co., Ltd., intraocular perfusion solution, contains the following components (per 1 mL): Budoku Hi. 5 mg, Shiidai Natricum 6.6 mg, Shiidai Kalicum 0.36 mg, salt 0.18 mg, 0.3 mg of magnesium sulfate, 2.lmg of sodium bicarbonate)
- Example 1 PLA0005 was gradually charged into an A-O jet mill (Seishin Enterprise) and pulverized (pressurizing conditions: gliding nozzle 0.4 MPa, pusher nozzle 0.4 MPa). Opergard MA was added to the obtained powder to prepare 2% and 1% suspensions. And Example 4. Example 4 was obtained by diluting Example 4 with Opegaard MA 10-fold. Example 3 was prepared by diluting Example 3 with Opegaard MA 10-fold. Example 2 was diluted 10-fold with Opegaard MA to obtain Comparative Example 1. 10 mL of the 1% suspension of Example 4 was centrifuged (1 OOO rpm, 5 minutes) to precipitate large particles, and the supernatant was collected to obtain Example 1.
- each solution A corresponding to each example and solution B as a polylactic acid solution were mixed at a ratio of 9: 1 as follows. That is, while stirring each solution A with a stirrer at 700 to 800 rpm, the solution B was dropped at a rate of about 100 LZ seconds to precipitate PLA0005 fine particles. After the mixture was stirred for about 30 minutes, aggregates were removed with a sieve (pore size: 106 / zm) to obtain a suspension D. After freeze-drying, powder sample E was obtained.
- Example 11, Example 17 and Example 22 were prepared by dispersing the powder sample E in the liquid C so that the final content of the fine particles was lwZv%.
- Example 11 having a fine particle content of lwZ v% was diluted by 10 times with Opegaard MA to a content of 0.001%, and a solution having a content of 0.1wwv was used in Example 10 and a content of 0.01% wZv%.
- Example 9 and Comparative Example 3 having a content of 0.001 wZv%.
- Example 17 was diluted 10-fold with Opegaard MA.
- Example 14 and Comparative Example 4 were those having a content of 0.0001 wZv%.
- Example 22 was diluted 10-fold with Opegaard MA, and the contents of 0.1 lwZv% were used in Example 21 and those with a content of 0.01 wZv% in Example 20, and those with a content of 0.001 wZv% were used.
- Example 19 the one having a content of 0.0001 wZv% was designated as Example 18, and the one having a content of 0.0001 wZv% was designated as Comparative Example 5.
- the powder sample E used in Example 11 was used.
- Suspensions prepared by dispersing in Liquid C so that PLA0005 had a final content of 2 wZv% and 5 wZv% were used as Examples 12 and 13.
- Example 25 A suspension prepared by dispersing powder sample E precipitated in an aqueous solution containing gohsenol EG-05 and dissolving it in liquid C so that PLA0005 had a final concentration of lwZv% was prepared in Example 25.
- Example 11 to 13, Example 17, and Examples 22 to 25 The lyophilization for preparation of Examples 11 to 13, Example 17, and Examples 22 to 25 was performed as follows: the suspension D was stored at -40 ° C for 6 hours and frozen. The pressure was reduced to 100 mHg or less at ⁇ 40 ° C., and dried for 24 hours or more. — The temperature was raised from 40 ° C in 10 ° C increments every hour until the temperature reached + 20 ° C. The powder was dried at + 20 ° C and 100 mHg or less for 24 hours or more to obtain powder sample E.
- Example 8 was diluted 10-fold with Opegaard MA to compare Example 7, Example 7 was diluted 10-fold with Operagar MA, Example 6 was diluted, and Example 6 was diluted 10-fold with Operagar MA.
- Example 2 was used.
- the content of PLA0005 in the supernatant was determined from the weight obtained by collecting 1 mL of the supernatant of Example 8 and drying it. At this time, the calculation was performed by subtracting the solid contents contained in povidone and opegard MA.
- soluble starch was gradually poured into an A-O jet mill (Seishin Enterprise) and pulverized (pressurizing conditions: gliding nozzle: 0.4 MPa, pusher nozzle: 0.4 MPa).
- a suspension having a fine particle content of 10 wZv% was prepared by polishing MA, and Example 31 was performed.
- Example 31 was diluted with Opegaard MA and a suspension with a content of lwZv% in Example 30, a suspension with a content of 0.1 lwZv% in Example 29, a suspension with a content of 0.01 wZv% in Example 28, A suspension having a content of 0.005 wZv% was used in Example 27, and a suspension having a content of 0.0025 wZv% was used in Example 26. A suspension having a content of 0.001 wZv% was used as Comparative Example 6.
- Example 33 contained PLGA5005, and Example 35 contained chitosan. Further, a 1 wZv% PLA0010 suspension prepared by adding Opegard MA was used as Example 34.
- Example 33 was centrifuged (centrifugation conditions: 1000 rpm, 5 minutes) to precipitate large particles, and the supernatant was collected.
- This supernatant was used as Example 32.
- the concentration of PLGA5005 in the supernatant was determined from the weight of a lmL supernatant taken and dried. At this time, the calculation was performed by subtracting the solid content contained in the opegard MA.
- Example 4 The particle diameters of the particles prepared in Example 4, Example 8, Example 11, Example 17, Example 22, Example 30, and Examples 32 to 35 were measured using a laser diffraction particle size distribution analyzer ( S ALD-2100, Shimadzu Corporation). The average particle size was the average value calculated by the method shown in Note 1. In other words, a large number
- the particle diameter of the particles belonging to the section concerned is represented (as a logarithm), and this is multiplied by the volume difference% (volume distribution frequency) of all the particles measured in each section with respect to the entire distribution range.
- the values obtained in the above are summed over the entire distribution range and averaged, and the average particle size (10 ") of the fine particles is obtained from the obtained average value ().
- the measurement was carried out after dispersing by ultrasonic wave in the example, and the measurement was not carried out in the comparative examples and the examples other than the above because the same lot of powder as the sample was used.
- volume difference% Volume frequency distribution
- a vitreous surgery apparatus OCUTOME (registered trademark), Alcon
- a microscope for ophthalmic surgery Carl Zeiss
- An incision is made about 3 mm outside the limbus of the porcine eye using a scalp ophthalmic surgical knife (20G V-Lance TM, Alcon) to cut the sclera parallel to the limbus, and a port for the perfusion cannula is opened.
- Perfusion force-Yure was inserted from the prepared port, and physiological saline (Otsuka Pharmaceutical) was constantly perfused during the operation.
- an ophthalmic surgical knife (20G V-Lance TM, Alcon)
- an ophthalmic surgical blade (20G V-Lance TM, Alcon) to strengthen the limbus parallel to the corneal limbus about 120 ° from the intraocular perfusion port around the center of the cornea.
- the membrane was incised to make a port for a Vitras cutter (vitreous cutter).
- a Vitras cutter was inserted from the prepared port, the lens and other surrounding tissues were excised, and after confirming that the fundus could be observed under a microscope, the central part of the vitreous body was removed.
- the shape of the residual vitreous is visible due to the adhesion of the fine particles, and the retina is seen only blurred through the attached fine particles.
- Tables 1 to 4 show the results of the visibility improving effect of the transparent tissue visualizing agent containing PLA-0005.
- PLA0005 In order to prepare PLA0005 having various particle diameters, in Comparative Example 1 and Examples 1 to 5, PLA0005 was ground using an A-O jet mill. In Comparative Examples 2 to 5 and Examples 6 to 25, fine particles were prepared by dissolving in an organic solvent and then precipitating them as fine particles.
- the povidone solution was used for Comparative Example 2, Comparative Example 3 and Examples 6 to 13, the mannitol solution was used for Comparative Example 4 and Examples 14 to 17, and the povidone solution was used for Comparative Example 5 and Examples 18 to 24.
- PLA0005 was precipitated as fine particles in the solution of povidone and mannitol and in the solution of gothenol and mannitol in Example 25, respectively. Further, in Comparative Example 2, Example 1 and Examples 6 to 8, a higher concentration suspension of PLA0005 was centrifuged and the supernatant was collected to obtain finer fine particles. As a result, fine particles having an average particle diameter in the range of 0.8 ⁇ m to 60.3 ⁇ m were obtained.
- Particles having particle diameters of 17.9 and 22 m were dispersed even at 5%, had good visibility, and could be used as a transparent tissue visualizing agent (Examples 13 and 24).
- the PLA0005 concentration was 2%, it could be used as a transparent tissue visualizing agent even with a shifted particle diameter (Examples 5, 12, and 23). From the above, the tested polylactic acid microparticles can show the effect of improving visibility even at 0.000 lwZv%, and if 0.005 wZv% or more, the improvement of visibility will be stably exhibited. It is clear that.
- PLA- -0005 0.01 0.1 0.1 0.00001 0.0001 0.001
- OpeGad MA suitable E suitable: E suitable suitable suitable S suitable: ⁇ suitable (total 1 OOmL)
- the soluble starch was pulverized using an A-O jet mill to obtain particles having a particle diameter of 35.8 ⁇ m.
- the vitreous could be visualized up to 0.0025 wZv% (Example 26). Therefore, if it is at least in the range of 0.0025% 10wZv%, it can be used as a transparent tissue visualizing agent.
- Example 36 38 the transparent tissue visualizing agent of Example 36 38 was prepared. 0.02 g of the powder sample prepared in Example 36, 0.04 g of the powder sample prepared in Example 37, and 0.06 g of the powder sample prepared in Example 38 were each 2 mL of the following dispersion in a 5 mL syringe. Was shaken by hand and the number of times of shaking required for the powder to disperse in the dispersion was measured.
- aqueous solution containing 1.1 lwZv% D mannitol and 1.1 lwZv% povidone K-30 was filtered through an aqueous filter having a pore size of 0.22 ⁇ m to obtain a solution A.
- opeguard MA was used as solution C.
- Solution A and solution B were mixed as follows at a ratio of 9: 1. That is, while stirring the solution A with a stirrer at 700 to 800 rpm, the solution B was dropped in about 100 ⁇ LZ seconds to precipitate the fine particles of PLA0005. After stirring for about 30 minutes, the aggregate was removed with a sieve (106 / zm in diameter) to obtain a suspension D. Lyophilization was performed in the vial to obtain powder sample E. Solution C was added to a vial containing powder sample E at the time of use, and dispersed to obtain a sample.
- the lyophilization was performed as follows. Suspension D was stored at 40 ° C for 6 hours, frozen, reduced to 100 / z mHg or less at 40 ° C, and dried for 24 hours or more. The temperature was increased by 10 ° C every hour from 40 ° C until the temperature reached + 20 ° C. Further, it was dried at + 20 ° C and 100 ⁇ mHg or less for 24 hours or more.
- Solution F and solution G were mixed as follows at a ratio of 9: 1. That is, while stirring the solution F with a stirrer at 700 to 800 rpm, the solution G was dropped in about 100 LZ seconds to precipitate the fine particles of PLA0005. After stirring this for about 40 minutes (of which 10 minutes under reduced pressure), the aggregates are removed with a sieve (106 / z m in diameter) and suspended! 3 ⁇ 4 [I got it. 2 mL was dispensed into the solid layer side 3 of the double-chamber type 1 syringe 1 shown in FIG. 1 and freeze-dried to obtain a powder L.
- a double-chamber syringe is filled by fitting a rubber stopper that is a movable partition 2 between the solid phase 3 and the liquid phase 4, filling the liquid phase 4 with 2 mL of the H solution as the medium 6, and plugging a piston 8.
- a transparent structure-visible sizing agent was produced.
- Reference numeral 9 denotes a front-rear peripheral flow path formed by partially recessing the inner wall of the double-chamber type 1 syringe 1.
- the lyophilization was performed as follows. That is, the suspension was stored at 40 ° C. for 6 hours, frozen, decompressed to 100 mHg or less at 40 ° C., and dried for 24 hours or more. The temperature was increased by 10 ° C every hour from 40 ° C until the temperature reached + 20 ° C. Further drying was performed at + 10 ° C and 100 / z mHg or less for 24 hours or more.
- the method of using the transparent tissue visualizing agent of the present example is as follows.
- the piston 8 is pushed forward to advance, whereby the movable partition 2 is pushed forward by the pressure generated in the liquid H as the medium in the liquid side 4.
- the liquid phase side 4 and the solid phase side 3 communicate with each other through the peripheral flow path 9, and the injection of the H solution into the solid phase side 3 is started.
- the biston 8 By advancing the biston 8 until it comes into contact with the movable partition 2, all of the liquid H is sent to the solid phase side 3, where it mixes with the powder L.
- the piston 8 is further advanced (along with the movable partition 2) to discharge the mixed solution from the discharge channel 7 to the operation site (through an injection needle or the like, not shown).
- a transparent tissue visualizing agent having the following formulation was prepared by a conventional method.
- the average particle size of the prepared soluble starch fine particles was about 50 ⁇ m.
- Soluble starch 1. Og Opegaard MA Total lOOmL
- a transparent tissue visualizing agent having the following formulation was prepared by a conventional method.
- a transparent tissue visualizing agent having the following formulation was prepared by a conventional method.
- the average particle size of the prepared polylactic acid fine particles was 0.2 to 0.3 ⁇ m.
- Transparent tissue visualizing agent containing lactic acid'glycolic acid copolymer fine particles A transparent tissue visualizing agent having the following formulation was prepared by a conventional method. The average particle diameter of the prepared lactic acid'glycolic acid copolymer fine particles was 0.06 to 0.07 / zm.
- a transparent tissue visualizing agent having the following formulation was prepared by a conventional method.
- a transparent tissue visualizing agent having the following formulation was prepared by a conventional method.
- a transparent tissue visualizing agent having the following formulation was prepared by a conventional method.
- Transparent tissue visualizing agent containing lactic acid'glycolic acid copolymer fine particles A transparent tissue visualizing agent having the following formulation was prepared by a conventional method.
- the present invention having the above-mentioned constitutions can be used in the operation of the vitreous, lens, and cornea, which are transparent tissues of the eye, without causing unnecessary reactions or side effects on the living body. It makes it possible to significantly increase the visibility of the tissue, thus facilitating such procedures and facilitating the reliable achievement of the surgical objectives.
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Abstract
Description
Claims
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2005800174267A CN1964723B (zh) | 2004-05-31 | 2005-05-30 | 大分子化合物的细颗粒在制造透明组织可视化制剂中的应用 |
| CA002567411A CA2567411A1 (en) | 2004-05-31 | 2005-05-30 | Transparent tissue-visualizing preparation |
| EP05743700A EP1752152A4 (en) | 2004-05-31 | 2005-05-30 | MEANS FOR VISUALIZING TRANSPARENT WEAVE |
| MXPA06013870A MXPA06013870A (es) | 2004-05-31 | 2005-05-30 | Agente para visualizar tejido transparente. |
| US11/597,976 US20070225727A1 (en) | 2004-05-31 | 2005-05-30 | Transparent Tissue-Visualizng Preparation |
| JP2006513978A JP4729482B2 (ja) | 2004-05-31 | 2005-05-30 | 透明組織可視化剤 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004-161147 | 2004-05-31 | ||
| JP2004161147 | 2004-05-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2005115411A1 true WO2005115411A1 (ja) | 2005-12-08 |
Family
ID=35450651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2005/009846 Ceased WO2005115411A1 (ja) | 2004-05-31 | 2005-05-30 | 透明組織可視化剤 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20070225727A1 (ja) |
| EP (1) | EP1752152A4 (ja) |
| JP (1) | JP4729482B2 (ja) |
| CN (1) | CN1964723B (ja) |
| CA (1) | CA2567411A1 (ja) |
| MX (1) | MXPA06013870A (ja) |
| WO (1) | WO2005115411A1 (ja) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006137341A1 (ja) * | 2005-06-22 | 2006-12-28 | Kyoto University | 硝子体可視化剤 |
| WO2008126720A1 (ja) | 2007-04-06 | 2008-10-23 | Senju Pharmaceutical Co., Ltd. | 眼透明組織可視化用懸濁剤 |
| WO2011016435A1 (ja) * | 2009-08-04 | 2011-02-10 | 千寿製薬株式会社 | ポリ乳酸粒子含有凍結乾燥組成物の製造方法 |
| WO2011016436A1 (ja) * | 2009-08-04 | 2011-02-10 | 千寿製薬株式会社 | ポリ乳酸微粒子含有凍結乾燥組成物の製造方法 |
| EP2384769A3 (en) * | 2006-03-17 | 2012-02-15 | Allergan, Inc. | Ophthalmic visualization compositions and methods of using same |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITRM20080037A1 (it) * | 2008-01-23 | 2009-07-24 | Uni Degli Studi Perugia | Procedimento per la ultrapurificazione di alginati. |
| PL2262506T3 (pl) | 2008-03-11 | 2014-09-30 | Alcon Res Ltd | Wysoce sflokulowane zawiesiny acetonidu triamcynolonu o niskiej lepkości do wystrzykiwania do ciała szklistego |
| DE102008064065B9 (de) | 2008-12-19 | 2011-01-05 | Fluoron Gmbh | Farbstofflösung |
| US8894608B2 (en) * | 2009-05-22 | 2014-11-25 | Michael P. Connair | Steroid delivery system |
| EP2298090B1 (en) | 2009-08-26 | 2016-01-13 | Jeffrey M. Golini | Pharmaceutical or nutraceutical composition |
| EP2522368A1 (en) | 2011-05-13 | 2012-11-14 | Bioftalmik, S.L. | Microparticles for intraocular tissue marking |
| CN107300496B (zh) | 2011-05-20 | 2020-11-24 | 国立研究开发法人理化学研究所 | 生物材料用透明化试剂、及其利用 |
| US8979867B2 (en) * | 2011-09-23 | 2015-03-17 | Gholam A. Peyman | Vitreous cutter |
| US9216067B2 (en) | 2011-09-23 | 2015-12-22 | Gholam A. Peyman | Vitreous cutter sleeve and a vitreous cutter system using the same |
| ES2714535T3 (es) | 2013-10-11 | 2019-05-28 | Massachusetts Eye & Ear Infirmary | Métodos para predecir secuencias de virus ancestrales y usos de los mismos |
| EP3291765A4 (en) * | 2015-05-07 | 2019-01-23 | Massachusetts Eye & Ear Infirmary | METHOD FOR THE DELIVERY OF AN ACTIVE SUBSTANCE TO THE EYE |
| US20170056047A1 (en) * | 2015-09-02 | 2017-03-02 | MicroAire Surgical Instruments, LLC. | Endoscopic Surgical Devices and Other Surgical Devices |
| US20180147328A1 (en) * | 2015-09-02 | 2018-05-31 | MicroAire Surgical Instruments, LLC. | Endoscopic Surgical Devices and Other Surgical Devices and Methods of Making, Especially Using Polyarylamides, Polyetherimides, Polyether Ether Ketones, and Liquid Crystal Polymers |
| WO2019195701A1 (en) | 2018-04-05 | 2019-10-10 | Massachusetts Eye And Ear Infirmary | Methods of making and using combinatorial barcoded nucleic acid libraries having defined variation |
| US11986423B1 (en) | 2018-06-18 | 2024-05-21 | Gholam A. Peyman | Method of using a vitrectomy instrument |
| US11020270B1 (en) | 2018-06-18 | 2021-06-01 | Gholam A. Peyman | Vitrectomy instrument and a system including the same |
| WO2022222907A1 (zh) | 2021-04-20 | 2022-10-27 | 中国海洋大学 | 巯基化多糖衍生物水凝胶及其制备方法和应用 |
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- 2005-05-30 MX MXPA06013870A patent/MXPA06013870A/es active IP Right Grant
- 2005-05-30 JP JP2006513978A patent/JP4729482B2/ja not_active Expired - Fee Related
- 2005-05-30 CA CA002567411A patent/CA2567411A1/en not_active Abandoned
- 2005-05-30 WO PCT/JP2005/009846 patent/WO2005115411A1/ja not_active Ceased
- 2005-05-30 CN CN2005800174267A patent/CN1964723B/zh not_active Expired - Fee Related
- 2005-05-30 EP EP05743700A patent/EP1752152A4/en not_active Withdrawn
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006137341A1 (ja) * | 2005-06-22 | 2006-12-28 | Kyoto University | 硝子体可視化剤 |
| JP2007001901A (ja) * | 2005-06-22 | 2007-01-11 | Kyoto Univ | 硝子体可視化剤 |
| EP1911471A4 (en) * | 2005-06-22 | 2014-04-23 | Kunihiro Musashi | MEDIUM FOR VISUALIZING THE GLASS BODY |
| EP2384769A3 (en) * | 2006-03-17 | 2012-02-15 | Allergan, Inc. | Ophthalmic visualization compositions and methods of using same |
| WO2008126720A1 (ja) | 2007-04-06 | 2008-10-23 | Senju Pharmaceutical Co., Ltd. | 眼透明組織可視化用懸濁剤 |
| EP2140871A4 (en) * | 2007-04-06 | 2011-02-16 | Senju Pharma Co | SUSPENSION FOR VISUALIZING TRANSPARENT OCULAR TISSUES |
| WO2011016435A1 (ja) * | 2009-08-04 | 2011-02-10 | 千寿製薬株式会社 | ポリ乳酸粒子含有凍結乾燥組成物の製造方法 |
| WO2011016436A1 (ja) * | 2009-08-04 | 2011-02-10 | 千寿製薬株式会社 | ポリ乳酸微粒子含有凍結乾燥組成物の製造方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2005115411A1 (ja) | 2008-03-27 |
| CN1964723B (zh) | 2011-06-22 |
| CA2567411A1 (en) | 2005-12-08 |
| JP4729482B2 (ja) | 2011-07-20 |
| CN1964723A (zh) | 2007-05-16 |
| EP1752152A4 (en) | 2011-02-16 |
| EP1752152A1 (en) | 2007-02-14 |
| MXPA06013870A (es) | 2007-04-25 |
| US20070225727A1 (en) | 2007-09-27 |
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