Dadd
Christopher A. Dadd, Holy Springs, NC US
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20110237781 | METHOD OF PREPARING ALPHA-1 PROTEINASE INHIBITOR - Purification of α-1 proteinase inhibitor (α-1 PI) from solutions comprising α-1 PI is accomplished using hydrophobic interaction chromatography (HIC). In some embodiments, purification of α-1 PI is accomplished by precipitation of contaminating proteins from a starting solution comprising α-1 PI, such as human plasma, followed by anion exchange resin chromatography prior to HIC. Further purification may be accomplished by an optional cation exchange chromatography subsequent to anion exchange chromatography but prior to HIC. Some embodiments of the invention also include virus removal and/or inactivation by methods such as nano filtration and such as contact with a non-ionic detergent. The methods of the present invention result in greater yield, purity, and pathogenic clearance of plasma fractions than known methods. | 09-29-2011 |
Christopher A. Dadd, Holly Springs, NC US
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20130164815 | PROCESS FOR THE PRODUCTION OF A REVERSIBLY INACTIVE ACIDIFIED PLASMIN COMPOSITION - Disclosed is both a process for producing a reversibly inactive acidified plasmin by activating plasminogen and a process for producing a purified plasminogen. The produced plasmin is isolated and stored with a low pH-buffering capacity agent to provide a substantially stable formulation. The purified plasminogen is typically purified from a fraction obtained in the separation of immunoglobulin from Fraction II+III chromatographic process and eluded at a low pH. The reversibly inactive acidified plasmin may be used in the administration of a thrombolytic therapy. | 06-27-2013 |
Fysh Dadd, Meadowbank AU
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20080269864 | Cochlear implant electrode array - A cochlear implant electrode assembly ( | 10-30-2008 |
Fysh Dadd, Lane Cove. Nsw AU
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20100057180 | IMPLANTABLE CARRIER MEMBER HAVING A NON-COMMUNICATIVE LUMEN - A non-communicative lumen for electrode assemblies of medical implants, in particular prosthetic hearing implants, is provided by the present invention. The non-communicative lumen prevents the lumen within the cochlea from being able to transport fluids, cells, bacteria, tissue, etc., with the lumen outside the cochlea, and vis versa through the incision or cochleostomy. The lumen may have a cavity or slit that receives a stylet during insertion of the electrode assembly. | 03-04-2010 |
20100106232 | HEARING PROSTHESIS ELECTRODE ARRAY WITH RESILIENTLY FLEXIBLE TIP MEMBER - A tip member for inserting into the cochlea, a device comprising: an elongate member including at least one electrode mounted thereon; and a tip member extending distally from a distal end of the elongate member, the tip member comprising a tapered portion tapering distally and a blunt end portion at a distal end of the tapered portion, wherein the tip member is resiliently flexible, and a method for making such a device. | 04-29-2010 |
20100305676 | COCHLEAR IMPLANT ELECTRODE ASSEMBLY - Disclosed is a lead for a cochlear implant modified so as to provide increased robustness to the lead. In one aspect, the lead has a helix region having an increased length such that it extends into a mastoid cavity of a patient when in situ. Also disclosed is a cochlear implant having a lead as described herein. In another aspect, the lead has an increased lead angle between the helix region and the transition region. | 12-02-2010 |
20110034969 | ELECTRODE ARRAY FOR A COCHLEAR IMPLANT - Disclosed is an electrode having a conducting wire and an electrode contact for a medical implant, the electrode being at least partially formed by Carbon Nanotubes (CNTs). Also disclosed are medical implants using the electrodes disclosed, as well as methods of manufacture of the electrode and medical implants. In one particular example, the electrode is formed with a CNT strand forming the conducting wire and a CNT sheet forming the electrode contact. | 02-10-2011 |
Fysh Dadd, New South Wales AU
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20110022146 | MANUFACTURING AN ELECTRODE ARRAY FOR A TUMULATINGL MEDICAL DEVICE - A method of forming an electrode array is disclosed, the method comprising: forming an elongate comb structure comprising a plurality of longitudinally-spaced electrode contacts extending from and supported by a spine; electrically connecting each of a plurality of electrically conductive pathways to a respective one of the plurality of electrode contacts; placing the conductive pathways adjacent the contacts; placing silicone over the conductive pathways and contacts; curing the silicone so as to substantially retain the longitudinal spacing between neighboring contacts; and severing the spine from the plurality of electrode contacts. | 01-27-2011 |
20110144733 | Electrode for a Cochlear Implant - An electrode for a cochlear implant for implantation in a cochlea of a patient, the electrode having a first side that is curved in a lateral dimension so as to substantially conform to a side wall of a scala upon implantation of the electrode into a cochlea and a second side that is shaped so as to preserve a natural acoustic pathway within the scala upon implantation of the electrode into the cochlea. In one example, opposing ends of the electrode taper off in cross section. In another example, the fluid contact side is concave. In a further example, the electrode is one of crescent-shaped, oval shaped, and semi-circular in cross section. By using such an electrode, a more natural fluid-flow in the cochlea can be maintained after implantation relative to an original fluid-flow prior to implantation. | 06-16-2011 |
20110152991 | STRAIN RELIEF IN AN IMPLANTABLE ELECTRODE ASSEMBLY - An implantable electrode assembly. The electrode assembly comprises an elongate carrier member, at least one electrode contact disposed in the carrier member, and at least one elongate conductive pathway disposed in the carrier member having a distal end attached to the at least one electrode contact and having a substantially planar strain relief formed therein that is located only in the distal region of the at least one pathway. | 06-23-2011 |
20110201997 | COCHLEAR IMPLANT ELECTRODE LEAD HAVING A CROSS-SECTION WITH VARIABLE HEIGHT - An electrode lead for a cochlear implant, the electrode lead having a lateral side and a medial side supporting an electrode array, wherein a height of a cross section of the electrode lead is greater in the lateral side than a height of the cross section in the medial side. | 08-18-2011 |
20120041531 | COCHLEAR IMPLANT WITH IMPROVED LUMEN ARRANGEMENT - Disclosed is an electrode lead for a medical implant, and in one example, a cochlear implant. The electrode lead includes a lumen for receiving a stylet for assisting in implanting the device. The lumen of the electrode lead is removable from the electrode lead upon or after implantation. | 02-16-2012 |
Lyle Dadd, West Bloomfield, MI US
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20110061304 | DUAL ACTION POWER DRIVE UNIT FOR A VEHICLE DOOR - A power drive unit system includes a vehicle door, a slide member, a motor, first and second cable guide members, first and second cables, an external spool, a door inner panel and one guide track. The internal spool unit includes an internal spool. The motor operatively communicates with the internal spool. The first cable guide member is associated with a first cable and the external spool. The first cable is attached to the internal spool and the external spool. The second cable guide member is associated with a second cable and the external spool. The second cable is attached to the internal cable spool the external spool, which in turn communicates with an output gear. The motor actuates the internal cable spool to pull the second cable, thereby causing rotation of the external spool and the drive shaft. The rotation of the drive shaft results in rotation of the door relative to the body; after which the door slides open. | 03-17-2011 |
Lyle Dadd US
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20100154313 | DUAL ACTION POWER DRIVE UNIT FOR A VEHICLE DOOR - A power drive unit system includes a vehicle door, a slide member, a motor, first and second cable guide members, first and second cables, an external spool, a door inner panel and one guide track. The internal spool unit includes an internal spool. The motor operatively communicates with the internal spool. The first cable guide member is associated with a first cable and the external spool. The first cable is attached to the internal spool and the external spool. The second cable guide member is associated with a second cable and the external spool. The second cable is attached to the internal cable spool the external spool, which in turn communicates with an output gear. The motor actuates the internal cable spool to pull the second cable, thereby causing rotation of the external spool and the drive shaft. The rotation of the drive shaft results in rotation of the door relative to the body; after which the door slides open. | 06-24-2010 |
Michael W. Dadd, Oxford GB
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20130206207 | Low Cost Focussing System Giving High Concentrations - There is disclosed a focussing system for concentrating radiation onto a target surface, comprising: a first reflective element forming part of the surface of a cone axially aligned along a first alignment axis, the first reflective element being positioned such that when planar radiation is incident on the first reflective element in a direction parallel to the first alignment axis, the planar radiation is focussed towards a first focus lying along the first alignment axis, wherein said part of the surface of a cone is contained within a sector having an included angle of less than 180 degrees; and a second reflective element having a reflective surface that at all points is flat in a direction parallel to a single reference direction, the second reflective element being positioned between the first reflective element and the first focus such that, when planar radiation is incident on the first reflective element in a direction parallel to the first alignment axis, radiation reflected from the first reflective element onto the second reflective element is focussed towards a second focus. A multiple target focussing system comprising a plurality of focussing systems, solar powered systems using focussing systems, kits, telescopes, defocussing light sources, and methods for assembling focussing systems are also disclosed. | 08-15-2013 |
Michael William Dadd, Summertown GB
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20120160091 | SPRINGS AND SPRING ASSEMBLIES - Various arrangements are disclosed based on springs formed from a plurality of individual resilient arms, including a spring having a substantially planar form in an unloaded state and rotational symmetry of at least order two about a symmetry axis perpendicular to the plane of the spring, said spring comprising: an inner hub and an outer hub, said inner hub being radially inward with respect to said outer hub; a plurality of resilient connecting arms each connected at an inner end to said inner hub and at an outer end to said outer hub, said plurality of resilient connecting arms being configured to provide a restoring force parallel to said symmetry axis when said inner and outer hubs are displaced relative to each other along said symmetry axis; wherein said inner hub, said outer hub and each of said plurality of resilient connecting arms are formed as physically separate elements and are connected to each other during assembly to form said spring. | 06-28-2012 |
Michael William Dadd, Oxford GB
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20110030367 | LINEAR MULTI-CYLINDER STIRLING CYCLE MACHINE - An improved method and system for removing blockage from hydrocarbon transfer conduits ( | 02-10-2011 |
20150052887 | STIRLING CYCLE MACHINES - Stirling cycle machines, including engines and coolers or heat pumps are described. In a disclosed arrangement, there is provided a Stirling cycle engine, comprising: an expansion volume structure defining an expansion volume; a compression volume structure defining a compression volume; a gas spring coupling volume structure defining a gas spring coupling volume; a first reciprocating assembly comprising an expansion piston configured to reciprocate within the expansion volume and an expander gas spring piston rigidly connected to the expansion piston and configured to reciprocate within the gas spring coupling volume; and a second reciprocating assembly comprising a compression piston configured to reciprocate within the compression volume and a compressor gas spring piston rigidly connected to the compression piston and configured to reciprocate within the gas spring coupling volume, wherein the gas spring coupling volume structure and the first and second reciprocating assemblies are configured such that power is transferred in use from the expansion piston to the compression piston via the gas spring coupling volume. | 02-26-2015 |
Michael William Dadd, Oxford, Oxfordshire GB
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20160131399 | PULSE TUBE COOLER - There is disclosed a cold head for a pulse tube cooler, comprising: a regenerator having a first end connectable to a compressor; a pulse tube having a first end and a second end; a heat exchanger connected between a second end of the regenerator and the first end of the pulse tube; and a phase control device connected at the second end of the pulse tube for controlling the flow dynamics in the pulse tube to provide cooling at the heat exchanger, thereby maintaining a negative temperature gradient between the first and second ends of the regenerator, wherein: the pulse tube comprises a wall having a porous portion for allowing a working gas to enter or leave the pulse tube directly through the porous portion, the porous portion being nearer to being parallel than perpendicular to the temperature gradient between the first and second ends of the regenerator. | 05-12-2016 |
Susan Dadd, League City, TX US
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20140131275 | PROCESS FOR PHASE SEPARATION OR EXTRACTION AND DEVICE SUITABLE THEREFOR - The present invention relates to a device for separating two immiscible phases and/or for extracting one phase with another phase (phase separation or extraction device), comprising at least one vessel for receiving the at least two phases, at least one pipe for supplying a fluid to the vessel, at least one pipe for discharging a fluid from the vessel, and at least one arrangement comprising a transparent disk for observing the separation operation or the extraction operation, wherein at least the side of the transparent disk that faces the phases to be separated or extracted consists of sapphire (sapphire glass) or mica ( mica disk), and to the use of such a device in the preparation of di- and polyamines of the diphenylmethane series. | 05-15-2014 |