Specially Adapted For Ruminant Animal Patents (Class 424/438)
-
Patent number: 5227167Abstract: The invention provides a dispensing device comprising a loading dose (first agent delivery means) for short-term and continuous delivery of an agent having a high potency, retained together with a long-term dispensing device (second agent delivery means) capable of a long-term and continuous delivery of agent. The combination of first and second agent delivery means provides a device in which a substantially constant dose of beneficial agent may be delivered to the environment of use over time. A rapid initial delivery of beneficial agent is followed by continuous and prolonged delivery of agent.Type: GrantFiled: February 27, 1992Date of Patent: July 13, 1993Assignee: ALZA CorporationInventors: John P. Carr, James B. Eckenhoff, Terry L. Burkoth
-
Patent number: 5225218Abstract: A method of making cheese with milk obtained from animals which have received feed supplemented or complemented with an amino acid in a protected form. The amino acid is preferably lysine and/or methionine.Type: GrantFiled: September 8, 1992Date of Patent: July 6, 1993Assignee: Rhone-Poulenc Nutrition AnimaleInventor: Jean-Claude Robert
-
Patent number: 5223266Abstract: The present invention is directed to an improvement in a delivery device, the device comprising a wall that surrounds an internal lumen or compartment which contains a beneficial agent or medicament formulation, an expandable driving member and an optional density member, and having an a exit means, and wherein the improvement comprises prehydrating the delivery device as a means for advancing the beginning or startup of agent delivery from the delivery system to give earlier release of beneficial agent to the environment of use. An embodiment of the invention concerns a fluid reservoir in contact with the expandable driving member to provide prehydration of the device.Type: GrantFiled: April 27, 1992Date of Patent: June 29, 1993Assignee: Alza CorporationInventors: James B. Eckenhoff, Terry L. Burkoth, John P. Carr, Jeremy C. Wright
-
Patent number: 5219572Abstract: A controlled release delivery device for macromolecular proteins which comprises a water-soluble outer capsule completely surrounding an inner compartment containing a plurality of non-uniform beadlets. The beadlets comprise a rupturable wax shell which completely surrounds a core matrix containing the macromolecular proteins and optional "core agents" such as excipients, stabilizers, binders, surfactants, preservatives, or mixtures thereof, and the like.The water-soluble outer capsule dissolves when the device is administered to an animal and simultaneously exposes substantially all of the beadlets to an aqueous environment. Each beadlet absorbs fluid from the environment and separately ruptures over a prolonged period thus delivering the macromolecular protein to the animal.Type: GrantFiled: July 25, 1991Date of Patent: June 15, 1993Assignee: Pitman-Moore, Inc.Inventors: Kallidaikurichi N. Sivaramakrishnan, Lindy F. Miller
-
Delivery system with thermoresponsive composition comprising means for controlling internal pressure
Patent number: 5215753Abstract: A dispensing device is disclosed for delivering a beneficial agent. The device comprises (1) a semipermeable housing defining a internal space, (2) an optional and presently preferred in the space, (3) a heat responsive composition comprising a beneficial agent in the space, (4) a space consuming member in the device, (5) a non-toxic compound blended with the heat responsive composition for enhancing its viscosity; (6) an exit port in the wall for increasing the internal pressure of the dispenser and for simultaneously letting the beneficial agent exit through said port from the device, and (7) an embodiment comprising a prehydrating fluid for fastening the start-up of delivery from the delivery system.Type: GrantFiled: March 12, 1992Date of Patent: June 1, 1993Assignee: ALZA CorporationInventors: Jeremy C. Wright, James B. Eckenhoff, Frederick H. Maruyama, John R. Peery -
Patent number: 5213809Abstract: A dispensing device is disclosed for delivering a beneficial agent. The device comprises (1) a semipermeable housing defining a internal space, (2) an optional and presently preferred in the space, (3) a heat responsive composition comprising a beneficial agent in the space, (4) a space consuming member in the device, (5) a non-toxic compound blended with the heat responsive composition for enhancing its viscosity; (6) an exit port in the wall for increasing the internal pressure of the dispenser and for simultaneously letting the beneficial agent exit through said port from the device, and (7) an embodiment comprising a prehydrating fluid for fastening the start-up of delivery from the delivery system.Type: GrantFiled: March 12, 1992Date of Patent: May 25, 1993Assignee: ALZA CorporationInventors: Jeremy C. Wright, James B. Eckenhoff, Frederick H. Maruyama, John R. Peery
-
Patent number: 5213810Abstract: The invention relates to certain stable microsphere compositions suitable for parenteral administration containing a fat or wax or mixture thereof; a biologically active protein, peptide or polypeptide; and an oil, semi-soft fat, fatty acid derivative or mixture thereof. The invention also relates to a method of making the microsphere compositions.Type: GrantFiled: March 30, 1990Date of Patent: May 25, 1993Assignee: American Cyanamid CompanyInventor: William Steber
-
Patent number: 5206024Abstract: A corrosion resistent density element for use in ruminal delivery devices which fragments upon contact with the blades in grinding machinery without damage to the blades. The density element has density of at least about 1.5 g/ml and a transverse rupture strength no greater than about 30,000 psi.Type: GrantFiled: December 24, 1991Date of Patent: April 27, 1993Assignee: Alza CorporationInventors: John R. Peery, James B. Eckenhoff
-
Patent number: 5206025Abstract: New porous, unitary freeze-dried pharmaceutical form, of homogeneous appearance, consisting of:a) an inclusion compound comprising:one or optionally more active substances,a predetermined quantity of cyclodextrin,optionally an additive facilitating inclusion,b) at least one substance chosen from:diluents,binders; andc) optionally one or more additives.Type: GrantFiled: June 4, 1992Date of Patent: April 27, 1993Assignee: Rhone-Poulenc SanteInventors: Frederic Courteille, Magali Vanhoeve
-
Patent number: 5198229Abstract: The present invention is directed to a fluid-imbibing drug delivery device having a first, low density such that it floats in the stomach contents for a predetermined prolonged period of time, during which prolonged period of time it dispenses a drug or other active agent to the stomach, and having a second, higher density such that the device exits the stomach at the end of the predetermined prolonged period of time.Type: GrantFiled: June 5, 1991Date of Patent: March 30, 1993Assignee: ALZA CorporationInventors: Patrick S. L. Wong, Felix Theeuwes, Steven D. Larsen
-
Patent number: 5198222Abstract: A time release bolus comprises a tubular member and an end cap secured to each other. The tubular member contains an inner bag which is adapted to receive and contain a nutrient or medicament substance. A capsule is provided in the tubular member, and upon fracture thereof, applies pressure to the inner bag. The end cap includes a plug which fits into an open end of the tubular member and a top portion. A passage is provided which leads from the tubular member to the exterior, such that nutrient or medicament can flow from the inside of the tubular member to the outside of the time release bolus. The bolus further includes in the end cap a mesh in the flow path of the substance, the mesh further restricting and controlling the amount of substance which may pass from the bolus to the exterior.Type: GrantFiled: August 31, 1990Date of Patent: March 30, 1993Assignee: AgriBioTech, Inc.Inventors: Marlan O. Scully, David Woodling
-
Patent number: 5192547Abstract: A correlation is established between aflatoxin B1 binding on raw montmorillonite clays and the ratio of their surface acidities divided by their porosities for surface acid sites whose pKa values fall in the range 5.0-6.8 (i.e. weakly acidic) and porosities for pores whose diameters fall in the region 50-600 A. This information provides a method for preselecting clay additives for animal feeds which have enhanced toxin binding capacity.Type: GrantFiled: October 1, 1990Date of Patent: March 9, 1993Assignee: Engelhard CorporationInventor: Dennis R. Taylor
-
Patent number: 5190775Abstract: A composition of matter and method for administering a bioactive substance to the post-rumen portion of the digestive system of a ruminant substantially without introducing the substance to the rumen portion of the digestive system is provided. The composition of matter comprises particles which have a specific gravity between about 0.3 and 2.0, preferably between about 1.0 and 2.0. The particles comprises a core comprising bioactive substance; a hydrophobic coating essentially completely encapsulating said core in a quantity sufficient to essentially preclude introduction of bioactive substance into the rumen; and a surfactant applied to the surface of the hydrophobic coating in a quantity sufficient to ensure that said particles do not float on the rumen. The method comprises orally administering this composition of matter to a ruminant.Type: GrantFiled: May 29, 1991Date of Patent: March 2, 1993Assignee: Balchem CorporationInventor: Robert E. Klose
-
Patent number: 5190760Abstract: A solid pharmaceutical composition for release of a biologically active substance into a desired aqueous environment, containing a core and an outer layer, said core comprising between 17 and 93% by weight of the biologically active substance, between 0.01 and 7% by weight of a water swellable polymer material and between 0 and 83% of one or more accessory ingredients, relative to the total weight of the core; and the outer layer comprising between 25 and 75% by weight of the biologically active substance, between 25 and 75% by weight of a material for enabling rapid dispersion of the outer layer into the aqueous environment and 0 to 50% by weight of one or more accessory ingredients, relative to the total weight of the outer layer. The composition is preferably formulated as a bolus for veterinary use.Type: GrantFiled: May 21, 1992Date of Patent: March 2, 1993Assignee: Coopers Animal Health LimitedInventor: Rodney C. Baker
-
Patent number: 5186937Abstract: A composition which is stable in a medium in which the pH is greater than or equal to 5.5 and which permits the release of an active substance in a medium in which the pH is less than or equal to 3.5, comprising the active substance, which contains inclusions of, or which is completely or partially covered by, a pH sensitive material whose extent and/or rate of swelling is greater in an acidic medium than in a neutral medium, and a coating of a hydrophobic layer.Type: GrantFiled: June 22, 1990Date of Patent: February 16, 1993Assignee: A.E.C. Societe de Chimie Organique et BiologiqueInventors: Robert E. Sparks, Norbert S. Mason, Pierre Autant, Andre Cartillier, Raymond Pigeon
-
Patent number: 5180591Abstract: This invention relates to an active agent delivery device. More particularly, the invention relates to a delivery device that includes a sleeve to protect the delivery device from transient mechanical forces. The delivery device of the invention is robust and resistant to transient mechanical forces. The invention provides a fluid-imbibing delivery device comprising a housing enclosing an internal compartment, said housing having a first wall section that substantially restricts the passage of fluid into the delivery device, i.e. is substantially fluid-impermeable, and that contains a beneficial agent; a second wall section that permits the passage of fluid into the delivery device, i.e. is fluid-permeable, and that contains at least one expandable driving member; and exit means; with a protective sleeve means extending from the first wall section of the housing to cover and protect the second wall section of the housing and the junction of the first and second sections.Type: GrantFiled: July 11, 1990Date of Patent: January 19, 1993Assignee: Alza CorporationInventors: Judy A. Magruder, John R. Peery, James B. Eckenhoff
-
Patent number: 5178874Abstract: Veterinary delayed release dosage forms which remain in the rumeno-reticular sac of an animal over an extended period of time and in which the therapeutically active substance has a predictable and delayed release pattern. The compositions comprise a dense filler, a disintegrant and a therapeutically active substance. The dosage form has a hydrophobic polymer or co-polymer coating and can deliver a plurality of doses of a medicament intermittently at a preset time interval in the rumen.Type: GrantFiled: March 27, 1992Date of Patent: January 12, 1993Assignee: SmithKline Beechman CorporationInventors: Lilian Kwan, William Steber
-
Patent number: 5167962Abstract: A filament system for delivery of a medicament in the intestine comprised of a material having the medicament contained therein which is coiled for ease in ingestion and to prevent uncoiling until the filament reaches the intestine. Once the coiled filament reaches the intestine and uncoils, the medicament is released therefrom. The filament is preferably comprised of a material which is water insoluble, semipermeable, enteric, or bioerodible to facilitate release of the medicament, and is provided with or comprised of a bioadhesive for retarding the passage of the filament through the intestine once uncoiled, with the result that therapeutically effective dosage levels are substained for relatively long periods of time.Type: GrantFiled: August 8, 1991Date of Patent: December 1, 1992Assignee: Southwest Research InstituteInventors: Chel W. Lew, Jack D. Trevino
-
Patent number: 5162116Abstract: An intraruminal device for controlled release of a drug formulation in the rumen of an animal, comprises an open-ended tube for containing the drug formulation, a piston adapted to travel longitudinally within the tube and biased so as to deliver the drug formulation through the open end of the tube. Travelling with the piston is an associated weight adapted to retain the device within the rumen during delivery of the drug formulation.Type: GrantFiled: November 18, 1991Date of Patent: November 10, 1992Assignee: Coopers Animal Health LimitedInventor: Michael T. Shepherd
-
Patent number: 5156851Abstract: Solid dosage forms of bioactive materials for parenteral administration such as porcine or bovine somatotropin pellets intended for subcutaneous implantation to improve food production of farm animals are coated with polyvinyl alcohol to extend the release characteristics of the material. The polyvinyl alcohol preferably has a molecular weight of from about 20,000 to 100,000, a degree of hydrolysis of at least about 98%, and is applied from an aqueous solution by spray coating to form a continuous uniform covering having a weight of from about 3 to 25 ug/mm.sup.2.Type: GrantFiled: September 19, 1991Date of Patent: October 20, 1992Assignee: Monsanto CompanyInventors: Ernesto J. Castillo, Kenneth E. Eigenberg, Kanaiyalal R. Patel, Milton J. Sabacky
-
Patent number: 5152995Abstract: Acid-sensitive antibiotic esters for oral administration to livestock are stabilized by incorporation in premix formulations comprising a carrier, a base, a protective coating, and optionally a sealant film.Type: GrantFiled: October 12, 1989Date of Patent: October 6, 1992Assignee: Syntex (U.S.A.) Inc.Inventors: Richard A. Runkel, Stephen A. Berry, Mahmood M. Ghani
-
Patent number: 5135523Abstract: A delivery system is disclosed for delivering a beneficial agent to an animal. The delivery system comprises a wall that surrounds a lumen, said wall comprising a composition that limits the passage of fluid into the system and a composition that permits the passage of fluid into the system. The lumen comprises a beneficial agent and an expandable member. The delivery system comprises an exit means for delivering the beneficial agent.Type: GrantFiled: April 20, 1990Date of Patent: August 4, 1992Assignee: ALZA CorporationInventors: Judy A. Magruder, James B. Eckenhoff, Richard Cortese, Jeremy C. Wright, John R. Peery
-
Patent number: 5126142Abstract: A dispenser is disclosed for delivering a beneficial ionophore to an animal. The dispenser comprises (1) a semipermeable housing defining an internal space, (2) at least one composition comprising an ionophore and a pharmaceutically acceptable carrier in the space, (3) an expandable hydrophilic composition in the space, (4) a dense member in the space, and (5) at least one exit passageway in the housing for delivering the ionophore from the dispenser.Type: GrantFiled: January 11, 1991Date of Patent: June 30, 1992Assignee: ALZA CorporationInventors: Atul D. Ayer, Terry L. Burkoth, Anthony L. Kuczynski, Joseph C. Deters
-
Patent number: 5112614Abstract: An implantable dispenser is enclosed comprising a wall surrounding a compartment containing a first composition comprising a beneficial agent, an oil, a cosolvent and a polymer gellant, a second expandable composition, a third boundary maintaining composition between the first and second composition, and an exit port.Type: GrantFiled: September 14, 1989Date of Patent: May 12, 1992Assignee: Alza CorporationInventors: Judy A. Magruder, James B. Eckenhoff, Jeremy C. Wright
-
Patent number: 5110598Abstract: Veterinary delayed release dosage forms which remain in the rumeno-reticular sac of an animal over an extended period of time and in which the therapeutically active substance has a predictable and delayed release pattern. The compositions comprise a dense filler, a disintegrant and a therapeutically active substance. The dosage form a hydrophobic polymer or co-polymer coating and can deliver a plurality of doses of a medicant intermittently at a present time interval in the rumen.Type: GrantFiled: November 20, 1990Date of Patent: May 5, 1992Assignee: SmithKline Beecham Corp.Inventors: Lilian Kwan, William Steber
-
Patent number: 5110597Abstract: A dispenser for use in a fluid environment which is capable of delivery of a plurality of discrete drug-containing units in any desired delivery pattern or profile.Type: GrantFiled: May 17, 1991Date of Patent: May 5, 1992Assignee: ALZA CorporationInventors: Patrick S. L. Wong, Felix Theeuwes, James B. Eckenhoff, Steven D. Larsen, Hoa T. Huynh
-
Patent number: 5110596Abstract: A delivery system is disclosed for delivering a beneficial agent to an animal. The delivery system comprises a wall that surrounds a lumen, said wall comprising a composition that limits the passage of fluid into the system and a composition that permits the passage of fluid into the system. The lumen comprises a beneficial agent and an expandable member. The delivery system comprises an exit means for delivering the beneficial agent.Type: GrantFiled: April 20, 1990Date of Patent: May 5, 1992Assignee: Alza CorporationInventors: Judy A. Magruder, James B. Eckenhoff, Richard Cortese, Jeremy C. Wright, John R. Peery
-
Patent number: 5108756Abstract: This invention relates to devices useful for the controlled delivery of one or more beneficial agents to an environment of use. More specifically, this invention concerns such devices which are powered by lyotropic liquid crystals. This invention also relates to the controlled delivery of one or more beneficial agents to an aqueous environment of use through the use of such lyotropic liquid crystal powered dispensing devices. Also disclosed are methods for the controlled delivery of one or more beneficial agents to an aqueous environment of use which comprise administering to or otherwise placing the devices of this invention in the environment of use.Type: GrantFiled: November 8, 1990Date of Patent: April 28, 1992Assignee: Pfizer Inc.Inventor: William J. Curatolo
-
Patent number: 5104662Abstract: The invention relates to a method of encapsulating biologically active substances by gelling them with intestinal mucus (mucin). The invention is also concerned with a capsule produced by the method, its use as a fodder admixture, and a fodder containing such capsules.Type: GrantFiled: October 16, 1990Date of Patent: April 14, 1992Assignee: Valio Meijerien KeskusosuusliikeInventors: Hannu Kalsta, Eeva-Liisa Syvaoja, Juha Nousiainen, Jouko Setala
-
Patent number: 5098425Abstract: A dispensing device is disclosed for delivering a beneficial agent. The device comprises (1) a housing defining an internal space, (2) an expandable composition comprising a dense member in the space, (3) a composition comprising a beneficial agent and a non-toxic heat responsive carrier in the space,and (4) a passageway in the housing for delivering the beneficial agent from the dispensing device.Type: GrantFiled: June 15, 1990Date of Patent: March 24, 1992Assignee: ALZA CorporationInventor: James B. Eckenhoff
-
Patent number: 5098718Abstract: Enzymatically degradable compositions for the coating of feed additives intended for ruminants, including zein, at least one hydrophobic substance, optionally at least one non-water-soluble polymer and at least one inorganic filler. The compositions are used to coat feed additives such as medicinal products, vitamins and amino acids.Type: GrantFiled: June 11, 1990Date of Patent: March 24, 1992Assignee: Rhone-Poulenc SanteInventors: Pierre Ardaillon, Christine Franzoni
-
Patent number: 5093128Abstract: A stomach chamber bypass nutrient comprises a beadlet fabricated in two steps having two regions, a first region having the desired nutrient and a second region including fats and calcium based compounds. The nutrient includes lysine, methionine, tryptothane, protein harmones, vitamins and other nutrients in amounts of from 36% to 59%. The nutrient is fabricated by forming in a first step the nutrient in a beadlet form, and in a second step coating the nutrient beadlet with the second region.Type: GrantFiled: July 18, 1989Date of Patent: March 3, 1992Inventors: Oliver J. Draguesku, Randall A. Johnson
-
Patent number: 5091185Abstract: Solid dosage forms of bioactive materials for parenteral administration such as porcine or bovine somatotropin pellets intended for subcutaneous implantation to improve food production of farm animals are coated with polyvinyl alcohol to extend the release characteristics of the material. The polyvinyl alcohol preferably has a molecular weight of from about 20,000 to 100,000, a degree of hydrolysis of at least about 98%, and is applied from an aqueous solution by spray coating to form a continuous uniform covering 3 to 25 .mu.m PVA/mm.sup.2.Type: GrantFiled: June 20, 1990Date of Patent: February 25, 1992Assignee: Monsanto CompanyInventors: Ernesto J. Castillo, Kenneth E. Eigenberg, Kanaiyalal R. Patel, Milton J. Sabacky
-
Patent number: 5077052Abstract: Novel organosoluble derivatives of chitosan, useful in coating biologically active feedstuff additives intended for ruminants, to provide coatings which are stable at a pH greater than 5 and which release the biologically active substance at a pH below 3.5, consist of a random chain of units represented by the formulae: ##STR1## in which: R.sub.1 represents an alkylcarbonyl radical (2 to 4 carbon atoms), R.sub.2 represents an alkyl radical (2 to 21 carbon atoms) or an optionally substituted phenyl radical, and R.sub.3 and R.sub.4 represent a hydrogen atom or alkylcarbonyl radicals (2 to 4 carbon atoms).Type: GrantFiled: November 29, 1989Date of Patent: December 31, 1991Assignee: Rhone-Poulenc SanteInventors: Christine Franzoni, Christian Gagnieu, Hugues Porte
-
Patent number: 5074857Abstract: A bolus for releasing a biologically active substance into a liquid environment according to this invention comprising an elongate core, at least one end of which is frustoconical and a liquid impervious casing at one end and open at the other disposed about the core, the bolus being so constructed that, in use, the casing is progressively shed as the core retreats, thereby releasing the active substance at a rate which varies over at least one time period, the casing being so structured as to retain its integrity without disintegrating in the absence of any support provided by the core.Type: GrantFiled: June 3, 1986Date of Patent: December 24, 1991Assignee: Coopers Animal Health LimitedInventors: Michael T. Shepherd, Rodney C. Baker, Peter H. Marsden
-
Patent number: 5068108Abstract: This invention concerns compositions for zootechnical and veterinary use, characterized in that biologically active substances are incorporated in protective matrices, which have the following properties: 1) controlled release (ruminal by-pass) effect; 2) chemical-physical protection of active principles against degradation induced by technological processes of production, storage and pellettization of fodders for all animal species. The matrices of the invention are characterized by a plastic rheological behaviour due to the presence of lipogelling agents. The obtained products show the following advantages: increased active principle stability in feeds for all animal species; protection of the active principles from attack of Rumen microorganisms in fodder from attack of for ruminants.Type: GrantFiled: February 27, 1990Date of Patent: November 26, 1991Assignee: Industria Italiana Integratori Trei S.p.A.Inventors: Luigi Fezzi, Giacomo Grassigli
-
Patent number: 5062829Abstract: The device for insertion into a body cavity e.g. the rumen of an animal for example a cattle beast is in the form of a resilient helical coil with bio-degradable portions. The device is deformable to have a smaller dimension to enable insertion through a body passage into the animal cavity. The device carries a drug e.g. progesterone and is retained in the body cavity for a time during which the drug is active. After time has passed the device is broken up by bio-degrading activity into pieces small enough to be discharged naturally by the animal. An applicator is provided.Type: GrantFiled: March 16, 1990Date of Patent: November 5, 1991Assignee: Carter Holt Harvey Plastic Products Group LimitedInventors: Raymond J. Pryor, James F. Pharoah, Graham F. Duirs
-
Patent number: 5059423Abstract: A delivery system is disclosed for delivering a beneficial agent to an animal. The delivery system comprises a wall that surrounds a lumen, said wall comprising a composition that limits the passage of fluid into the system and a composition that permits the passage of fluid into the system. The lumen comprises a beneficial agent and an expandable member. The delivery system comprises an exit means for delivering the beneficial agent.Type: GrantFiled: April 23, 1990Date of Patent: October 22, 1991Assignee: Alza CorporationInventors: Judy A. Magruder, James B. Eckenhoff, Richard Cortese, Jeremy C. Wright, John R. Peery
-
Patent number: 5057319Abstract: The present invention provides a pharmaceutical granule composition comprising cimetidine and, as a granulating agent and taste-masking agent, an ester of a polyhydroxy compound, and where desired a palatable pharmaceutically acceptable emulsifier. Particular esters are glycerol esters. The granules of the present invention can be used in the preparation of chewable tablets which have good palatability and bioavailability.Type: GrantFiled: December 20, 1988Date of Patent: October 15, 1991Assignee: Smith Kline Dauelsberg GmbHInventors: Eberhard F. Gottwald, Hermann P. Osterwald, Horst M. Machoczek, David Mayron
-
Patent number: 5057318Abstract: A delivery system is disclosed for delivering a beneficial agent to an animal. The delivery system comprises a wall that surrounds a lumen, said wall comprising a composition that limits the passage of fluid into the system and a composition that permits the passage of fluid into the system. The lumen comprises a beneficial agent and an expandable member. The delivery system comprises an exit means for delivering the beneficial agent.Type: GrantFiled: April 20, 1990Date of Patent: October 15, 1991Assignee: ALZA CorporationInventors: Judy A. Magruder, James B. Eckenhoff, Richard Cortese, Jeremy C. Wright, John R. Perry
-
Patent number: 5045082Abstract: The invention provides a long-term dispensing device comprising a first agent delivery means for short-term and continuous delivery of agent, retained together with a second agent delivery means capable of long-term and continuous delivery of agent. The combination of first and second agent delivery means provides a device in which a substantially constant dose of beneficial agent is delivered to the environment of use over time. A rapid delivery of beneficial agent is followed by continuous and prolonged delivery of agent.Type: GrantFiled: January 10, 1990Date of Patent: September 3, 1991Assignee: Alza CorporationInventors: Atul D. Ayer, James B. Eckenhoff, Jeremy C. Wright, Anthony L. Kuczynski
-
Patent number: 5035891Abstract: A sustained release, reservoir-type subcutaneous implant device for the sustained administration to a subject of a biologically active compound comprises:an effective amount of a biologically active compound;an amount of a solid hydrophilic polymer sufficient to cause swelling of the device by osmotic pressure after implantation;an effective amount of a solubilizing agent; anda sufficient amount of a non-porous rate-controlling membrane which completely encapsulates said biologically active compound, wherein said rate-controlling membrane is permeable to said biologically active compound, but is impermeable to said solubilizing agent. This device is particularly advantageous for the administration of growth promoting compounds to livestock.Type: GrantFiled: August 24, 1989Date of Patent: July 30, 1991Assignee: Syntex (U.S.A.) Inc.Inventors: Richard A. Runkel, Jung-Chung Lee
-
Patent number: 5023088Abstract: A dispenser for use in a fluid environment which is capable of delivery of a plurality of discrete drug-containing units in any desired delivery pattern or profile.Type: GrantFiled: March 19, 1990Date of Patent: June 11, 1991Assignee: Alza CorporationInventors: Patrick S. L. Wong, Felix Theeuwes, James B. Eckenhoff, Steven D. Larsen, Hoa T. Huynh
-
Patent number: 5017381Abstract: The present invention is directed to an active agent dispenser for use in a fluid-containing environment, which dispenser comprises a rigid housing, a plurality of movable active agent units filling a portion of the housing, a fluid-activated driving member for dispensing the active agent units filling the remainder of the housing, and an active agent unit outlet means. In the present invention, each active agent unit is comprised of an active agent dosage or filling contained within a fluid-impermeable cup-shaped member, the cup-shaped members being oriented within the housing with the base of the cup-shaped members facing the outlet means.Type: GrantFiled: May 2, 1990Date of Patent: May 21, 1991Assignee: Alza CorporationInventors: Frederick Maruyama, Richard Cortese
-
Patent number: 5004603Abstract: Ruminants are fed a water-insoluble polymer, which may be swollen (i.e. having absorbed water to form a gel) or unswollen. At least 0.04 kg of (swollen) polymers per day per 100 kg body weight is administered, and the polymer has not necessarily been used as a substrate for the preparation of feedstuff.Such methods are particularly advantageous when the animal is being fed on a diet causing acid conditions in the rumen, such as a diet of silage.A useful polymer is ammonium polyacrylate cross-linked by about 500 ppm methylene bisacrylamide ("MBA").The polymers enhance feed conversion rates and hence lower the effective cost of feeding the animals.Type: GrantFiled: March 11, 1987Date of Patent: April 2, 1991Assignees: Rene Pich, Hubert Issaurat, Barry A. ThompsonInventor: Barry A. Thompson
-
Patent number: 5002772Abstract: An oral drug delivery system having delayed gastrointestinal transit comprising a non-continuous compressible element and an attached controlled release device and which in the expanded form resists gastrointestinal transit; and a modular system for use therein comprising a non-continuous compressible element and an attached receptacle means for receiving and holding a drug-containing orally administrable controlled release device and which in the expanded form resists gastric transit.Type: GrantFiled: May 31, 1988Date of Patent: March 26, 1991Assignee: Pfizer Inc.Inventors: William J. Curatolo, Jeelin Lo
-
Patent number: 5002768Abstract: There are herein disclosed rodent-repellent microcapsules in which a core material is coated with a wall material of the microcapsules, the core material being a solution containing cycloheximide; a rodent-repellent resin composition comprising said microcapsules; a rodent-repellent coating material comprising said microcapsules; and a rodent-repellent adhesive comprising said microcapsules.Type: GrantFiled: November 30, 1988Date of Patent: March 26, 1991Assignees: Tanabe Seiyaku Co., Ltd., Toppan Moore Co., Ltd.Inventors: Takeshi Kondo, Osamu Ueda, Yoshiya Fukakusa, Masafumi Moriwaki, Hideki Fuziwara
-
Patent number: 5000957Abstract: A dispensing system is disclosed comprising a wall surrounding a lumen. The lumen comprises (1) a thermo responsive composition comprising a beneficial agent, (2) means for occupying space in the lumen for pushing the thermo responsive composition from the dispensing system, and (3) means for enhancing the amount of the beneficial agent dispensed from the system positioned between the thermo responsive composition and the means for occupying space.Type: GrantFiled: March 28, 1989Date of Patent: March 19, 1991Assignee: Alza CorporationInventors: James B. Eckenhoff, Richard Cortese, Felix A. Landrau
-
Patent number: 4994227Abstract: The invention is an injection molding method for the preparation of sustained release boluses which are useful for administration of insect growth regulators or other veterinary compositions to animals.Type: GrantFiled: February 3, 1989Date of Patent: February 19, 1991Assignee: American Cyanamid CompanyInventors: Joseph C. Dietz, Richard B. Toothill
-
Patent number: 4994275Abstract: Device for oral administration of a medicament to a ruminant animal comprises a rilaminate sheet (1) containing the medicament rolled into a tube retained in the rolled configuration by a film (3) of material which disintegrates in the rumen to allow unrolling of the sheet. The tube ends are closed by plugs (2) which keep the tube closed during passage of the device through the oesophagus.Type: GrantFiled: June 26, 1989Date of Patent: February 19, 1991Assignee: Pfizer Inc.Inventors: William T. R. Grimshaw, Andrew J. Weatherley