Patents by Inventor Alexander L. Huang
Alexander L. Huang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7972292Abstract: A ureteral decompression device comprises a guide member and an anchoring structure. The guide member may be introduced through the urethra and bladder into the ureter so that the anchor structure passes a lodged kidney stone. Once past the stone, the anchor structure can be compacted to anchor the guide member in place. The anchor structure will permit leakage and the guide member will provide a leakage path directly past the stone, thus decompressing the kidney.Type: GrantFiled: May 17, 2006Date of Patent: July 5, 2011Assignee: Percutaneous Systems, Inc.Inventors: Robert S. Behl, Alexander L. Huang, Linh A. Dinh
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Publication number: 20110098690Abstract: Occluding structures may be created within a body lumen by advancing a length of material distally through the body lumen. By drawing a distal location on the advanced length of material in a proximal direction, the material may be compacted into a structure which at least partially occludes the lumen. The occluding structure may be used to remove kidney stones from the ureter in conjunction with lithotripsy and irrigation.Type: ApplicationFiled: December 30, 2010Publication date: April 28, 2011Applicant: Percutaneous Systems, Inc.Inventors: Alexander L. Huang, Rupesh Desai
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Publication number: 20110070198Abstract: The present invention is directed to a method and a composition for producing and using a plant-based biocidal solution. The plant-based biocidal solution contains a bioactive material and a plant-based substance formed from the cellular material of a plant. The plant-based substance is capable of binding to the bioactive material. In some embodiments, the bioactive material is hydrogen peroxide. The hydrogen peroxide can be added exogenously or generated endogenously. In accordance with further embodiments, the plant-based biocidal solution can be applied to a target, thereby impairing the target. In some embodiments, the target can be a pathogen. In accordance with another embodiment, the plant-based substance of the plant-based biocidal solution can form a microscopic cluster, a complex, or an aggregate for providing sufficient bioactive material to overcome the defense mechanism of the target.Type: ApplicationFiled: December 23, 2008Publication date: March 24, 2011Inventors: Alexander L. Huang, Gin Wu
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Publication number: 20110052557Abstract: The present invention is directed to a method and a composition for producing and using a plant-based biocidal solution. The plant-based biocidal solution contains a bioactive material and a plant-based substance formed from the cellular material of a plant. The plant-based substance is capable of binding to the bioactive material. In some embodiments, the bioactive material is hydrogen peroxide. The hydrogen peroxide can be added exogenously or generated endogenously. In accordance with further embodiments, the plant-based biocidal solution can be applied to a target, thereby impairing the target. In some embodiments, the target can be a pathogen. In accordance with another embodiment, the plant-based substance of the plant-based biocidal solution can form a microscopic cluster, a complex, or an aggregate for providing sufficient bioactive material to overcome the defense mechanism of the target.Type: ApplicationFiled: August 25, 2010Publication date: March 3, 2011Inventors: ALEXANDER L. HUANG, Gin Wn
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Patent number: 7883516Abstract: Occluding structures may be created within a body lumen by advancing a length of material distally through the body lumen. By drawing a distal location on the advanced length of material in a proximal direction, the material may be compacted into a structure which at least partially occludes the lumen. The occluding structure may be used to remove kidney stones from the ureter in conjunction with lithotripsy and irrigation.Type: GrantFiled: July 13, 2007Date of Patent: February 8, 2011Assignee: Percutaneous Systems, Inc.Inventors: Alexander L. Huang, Rupesh Desai
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Patent number: 7879066Abstract: A luminal occlusion device comprises a tension member, an elongate shaft, and a flat film having an axial receptacle which is received over a distal portion of the tension member. The flat film has proximal and distal ends which are attached to the distal ends of the tension member and the elongate shaft, respectively. Thus, distal advancement of the tension member relative to the shaft will cause the flat film to assume a low profile configuration, while proximal retraction of the tension member relative to the elongate shaft will cause the flat film to assume a foreshortened, compacted configuration. The film usually includes one or more radioopaque markers which help shape the compacted film.Type: GrantFiled: July 13, 2007Date of Patent: February 1, 2011Assignee: Percutaneous Sustems, Inc.Inventors: Rupesh Desai, Alexander L. Huang, Steven Yee
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Publication number: 20100158885Abstract: Methods of and compositions for producing and using plant-based materials are provided. The methods include using biopolymers or their synthetic equivalents combined with a stable source of reactive oxygen species that when applied to or combined with a separate source of oxido-reducing enzyme or catalyst will cause the formation of an activated biopolymer with increased protein binding affinity and microbial control activities.Type: ApplicationFiled: March 1, 2010Publication date: June 24, 2010Applicant: METAACTIV, INC.Inventors: Alexander L. Huang, Gin Wu
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Publication number: 20090287238Abstract: Occluding structures may be created within a body lumen by advancing a length of material distally through the body lumen. By drawing a distal location on the advanced length of material in a proximal direction, the material may be compacted into a structure which at least partially occludes the lumen. The occluding structure may be used for a variety of purposes, including removing obstructions from the body lumen, such as kidney stones from the ureter; providing hemostasis in a blood vessel; providing occlusion of a fallopian tube; temporary constraint of stone fragments in the urinary tract; capture or restraint of clot in blood vessels; and the like. Apparatus for performing the method may comprise a length of material attached at its distal end to tubular guide or other advancement member. Tensioning members may also be provided for collapsing and compacting the length of material within the body lumen.Type: ApplicationFiled: November 12, 2008Publication date: November 19, 2009Applicant: Percutaneous Systems, inc.Inventors: Robert S. Behl, Alexander L. Huang
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Publication number: 20090100152Abstract: A system that incorporates teachings of the present disclosure may include, for example, a client terminal having a controller to transmit a request for a communication identifier of each of a plurality of network elements in a proximity to the client terminal, receive the communication identifier of each of the plurality of network elements, initiate a quality assurance test with a quality assurance client of each of the plurality of network elements according to the communication identifier of the respective network element, compare telemetry information derived from the quality assurance test for each of the plurality of network elements to a desired operational criterion, select one of the plurality of network elements according to said comparison, and consume one or more services provided by the selected network element. Other embodiments are disclosed.Type: ApplicationFiled: October 11, 2007Publication date: April 16, 2009Applicant: AT&T KNOWLEDGE VENTURES, L.P.Inventors: Armstrong Soo, Bernard Ku, Alexander L. Huang
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Publication number: 20090018549Abstract: A luminal occlusion device comprises a tension member, an elongate shaft, and a flat film having an axial receptacle which is received over a distal portion of the tension member. The flat film has proximal and distal ends which are attached to the distal ends of the tension member and the elongate shaft, respectively. Thus, distal advancement of the tension member relative to the shaft will cause the flat film to assume a low profile configuration, while proximal retraction of the tension member relative to the elongate shaft will cause the flat film to assume a foreshortened, compacted configuration. The film usually includes one or more radioopaque markers which help shape the compacted film.Type: ApplicationFiled: July 13, 2007Publication date: January 15, 2009Applicant: Percutaneous Systems, Inc.Inventors: Rupesh Desai, Alexander L. Huang, Steven Yee
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Publication number: 20090018569Abstract: A luminal occlusion device comprises a tension member, an elongate shaft, and a flat film having an axial receptacle which is received over a distal portion of the tension member. The flat film has proximal and distal ends which are attached to the distal ends of the tension member and the elongate shaft, respectively. Thus, distal advancement of the tension member relative to the shaft will cause the flat film to assume a low profile configuration, while proximal retraction of the tension member relative to the elongate shaft will cause the flat film to assume a foreshortened, compacted configuration. The film usually includes one or more radioopaque markers which help shape the compacted film.Type: ApplicationFiled: March 3, 2008Publication date: January 15, 2009Applicant: Percutaneous Systems, Inc.Inventors: Rupesh Desai, Alexander L. Huang, Steven Yee, Jennifer Hodor
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Patent number: 7462183Abstract: Occluding structures may be created within a body lumen by advancing a length of material distally through the body lumen. By drawing a distal location on the advanced length of material in a proximal direction, the material may be compacted into a structure which at least partially occludes the lumen. The occluding structure may be used for a variety of purposes, including removing obstructions from the body lumen, such as kidney stones from the ureter; providing hemostasis in a blood vessel; providing occlusion of a fallopian tube; temporary constraint of stone fragments in the urinary tract; capture or restraint of clot in blood vessels; and the like. Apparatus for performing the method may comprise a length of material attached at its distal end to tubular guide or other advancement member. Tensioning members may also be provided for collapsing and compacting the length of material within the body lumen.Type: GrantFiled: July 7, 2004Date of Patent: December 9, 2008Assignee: Percutaneous Systems, Inc.Inventors: Robert S. Behl, Alexander L. Huang
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Publication number: 20080255633Abstract: Large tissue regions are treated using pairs of electrode arrays. The electrode arrays may be concave and disposed in tissue so that their concave portions are opposed to each other. Axial conductors may be provided extending from the arrays and toward each other in order to increase the heating of tissues lying along the axis between the deployed electrode arrays. By properly spacing the electrode arrays apart and selecting the diameters of the arrays, desired volumes of tissue may be treated, typically with a bipolar, radiofrequency current.Type: ApplicationFiled: May 27, 2008Publication date: October 16, 2008Applicant: BOSTON SCIENTIFIC SCIMED, INC.Inventors: Robert S. Behl, Morton Grosser, Alexander L. Huang
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Publication number: 20080177277Abstract: Occluding structures may be created within a body lumen by advancing a length of material distally through the body lumen. By drawing a distal location on the advanced length of material in a proximal direction, the material may be compacted into a structure which at least partially occludes the lumen. The occluding structure may be used to remove kidney stones from the ureter in conjunction with lithotripsy and irrigation.Type: ApplicationFiled: July 13, 2007Publication date: July 24, 2008Applicant: Percutaneous Systems, Inc.Inventors: Alexander L. Huang, Rupesh Desai
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Patent number: 7387628Abstract: Large tissue regions are treated using pairs of electrode arrays. The electrode arrays may be concave and disposed in tissue so that their concave portions are opposed to each other. Axial conductors may be provided extending from the arrays and toward each other in order to increase the heating of tissues lying along the axis between the deployed electrode arrays. By properly spacing the electrode arrays apart and selecting the diameters of the arrays, desired volumes of tissue may be treated, typically with a bipolar, radiofrequency current.Type: GrantFiled: September 15, 2000Date of Patent: June 17, 2008Assignee: Boston Scientific Scimed, Inc.Inventors: Robert S. Behl, Morton Grosser, Alexander L. Huang
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Patent number: 7255687Abstract: A luminal access system comprises an evertable, lubricious sleeve, a pusher tube, and optionally a lumen tube. The evertable, lubricious sleeve is attached to a non-evertable sheath which is coaxially received over the pusher tube. A distal portion of the evertable sleeve folds or everts into an axial passage of the pusher tube where it is connected to a lumen tube. A distal portion of the pusher tube may be bendable, typically comprising a relatively soft polymer which is circumferentially reinforced to enhance hoop strength.Type: GrantFiled: November 19, 2004Date of Patent: August 14, 2007Assignee: Percutaneous Systems, Inc.Inventors: Alexander L. Huang, Kenneth A. Peartree, Henry Lao
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Patent number: 7195629Abstract: Large tissue regions are treated using pairs of electrode arrays. The electrode arrays may be concave and disposed in tissue so that their concave portions are opposed to each other. Axial conductors may be provided extending from the arrays and toward each other in order to increase the heating of tissues lying along the axis between the deployed electrode arrays. By properly spacing the electrode arrays apart and selecting the diameters of the arrays, desired volumes of tissue may be treated, typically with a bipolar, radiofrequency current.Type: GrantFiled: August 18, 2003Date of Patent: March 27, 2007Assignee: Boston Scientific Scimed, Inc.Inventors: Robert S. Behl, Morton Grosser, Alexander L. Huang
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Publication number: 20040158239Abstract: Large tissue regions are treated using pairs of electrode arrays. The electrode arrays may be concave and disposed in tissue so that their concave portions are opposed to each other. Axial conductors may be provided extending from the arrays and toward each other in order to increase the heating of tissues lying along the axis between the deployed electrode arrays. By properly spacing the electrode arrays apart and selecting the diameters of the arrays, desired volumes of tissue may be treated, typically with a bipolar, radiofrequency current.Type: ApplicationFiled: August 18, 2003Publication date: August 12, 2004Inventors: Robert S. Behl, Morton Grosser, Alexander L. Huang
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Patent number: 6648882Abstract: Large tissue regions are treated using pairs of electrode arrays. The electrode arrays may be concave and disposed in tissue so that their concave portions are opposed to each other. Axial conductors may be provided extending from the arrays and toward each other in order to increase the heating of tissues lying along the axis between the deployed electrode arrays. By properly spacing the electrode arrays apart and selecting the diameters of the arrays, desired volumes of tissue may be treated, typically with a bipolar, radiofrequency current.Type: GrantFiled: September 15, 2000Date of Patent: November 18, 2003Assignee: Radio Therapeutics CorporationInventors: Robert S. Behl, Morton Grosser, Alexander L. Huang
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Patent number: 6080149Abstract: Improved methods and apparatus for monitoring the delivery of radio frequency (RF) energy from electrodes disposed in tissue for inducing hyperthermia and other purposes. In one form, an impedance display of a power supply comprises an array of discrete light elements, where the number of light elements illuminated increases in response to a percentage increase in calculated impedance. The array of light elements is typically arranged in a non-linear pattern where a left hand portion of the array extends horizontally while a right hand portion extends upwardly. The display allows an operator to visually monitor abrupt increases in impedance between an RF instrument and a target tissue. Such increases are used to determine acceptable power ranges to achieve a maximum sustainable delivery of radio frequency energy to the tissue consistent with complete, rapid, and uniform heating of the tissue.Type: GrantFiled: January 9, 1998Date of Patent: June 27, 2000Assignee: Radiotherapeutics, CorporationInventors: Alexander L. Huang, Sharon A. Riddle, Peter F. Lyons