Patent application number | Description | Published |
20130071594 | HOLLOW FIBER APPARATUS AND USE THEREOF FOR FLUIDS SEPARATIONS AND HEAT AND MASS TRANSFERS - A hollow fiber device includes a hollow fiber bundle, comprising a plurality of hollow fibers, a first tubesheet and a second tubesheet encapsulating respective distal ends of the hollow fiber bundle. The tubesheets have boreholes in fluid communication with bores of the hollow fibers. In at least one of the tubesheets, the boreholes are formed radially. The hollow fiber device can be utilized in heat exchange, in gas/gas, liquid/liquid and gas/liquid heat transfer, in combined heat and mass transfer and in fluid separation assemblies and processes. The design disclosed herein is light weight and compact and is particularly advantageous when the pressure of a first fluid introduced into the bores of hollow fibers is higher than the pressure on the shell side of the device. | 03-21-2013 |
20130081537 | HOLLOW FIBER APPARATUS AND USE THEREOF FOR FLUIDS SEPARATIONS AND HEAT AND MASS TRANSFERS - A hollow fiber fluid separation device includes a hollow fiber cartridge, comprising a plurality of hollow fiber membranes arranged around a central tubular core, a first tubesheet and a second tubesheet encapsulating respective distal ends of the hollow fiber bundle. The tubesheets have boreholes in fluid communication with bores of the hollow fiber membrane. In at least one of the tubesheets, the boreholes are formed radially and are in communication with the central tubular core. The hollow fiber fluid separation device can be utilized in liquid separation applications such as ultrafiltration and in gas separation processes such as air separation. The design disclosed herein is light weight and compact and is particularly advantageous at high operating temperatures when the pressure of the feed fluid introduced into the bores of hollow fibers is higher than the pressure on the shell side of the device. | 04-04-2013 |
20140175227 | FLUID SEPARATION ASSEMBLY AND METHOD - In an embodiment there is provided a fluid separation assembly. The assembly has a hollow fiber bundle with a plurality of hollow fiber membranes. The assembly further has a first tubesheet and a second tubesheet encapsulating respective ends of the hollow fiber bundle, wherein one of the tubesheets has a plurality of radial through openings formed in the tubesheet. The assembly further has a housing surrounding the hollow fiber bundle and the first and second tubesheets, the housing having a feed inlet port, a permeate outlet port, and a non-permeate outlet port. The feed gas, permeate gas, or non-permeate gas are introduced into or removed from the hollow fiber membranes via the plurality of radial through openings formed in the tubesheet, such that the radial through openings of the tubesheet intersect each or substantially each of the hollow fiber membranes. | 06-26-2014 |
20140260968 | METHOD AND APPARATUS FOR DESORPTION USING A MICROPOROUS MEMBRANE OPERATED IN WETTED MODE - A method for desorption of one or more gases from a liquid stream in which a liquid stream containing at least one gas is provided to the feed side of a porous membrane and a trans-membrane pressure drop from the feed side to the opposite gas side of the membrane is created, resulting in a portion of the liquid stream filling at least a portion of the pores of the porous membrane and desorption of at least a portion of the at least one gas from the liquid stream to the gas side of the porous membrane. | 09-18-2014 |
Patent application number | Description | Published |
20100217356 | Method to reduce heating at implantable medical devices including neuroprosthetic devices - A method to control tissue/device heating at implantable medical devices including neuroprosthetic devices. In a first embodiment, thermal conductivity of components of the implantable medical devices including the neuroprosthetic devices is increased. In a second embodiment, the implantable medical devices including the neuroprosthetic devices are cooled by using heat-sinks. In a third embodiment, portions of the implantable medical devices including the neuroprosthetic devices are replaced with specific thermal properties. In a fourth embodiment, the implantable medical devices including the neuroprosthetic devices are coated with a drug/material that will induce surrounding tissue to become more resistant to temperature increases. In a fifth embodiment, the temperature increase near the implantable devices including the neuroprosthetic devices is determined using a modified bio-heat transfer model. In a sixth embodiment, the shape of the outer or the inner surface of the device is modified. | 08-26-2010 |
20110144716 | Apparatus and Method for Neurocranial Electrostimulation - There is provided method and apparatus for enhancing focality of neurocranial electrostimulation, including: providing a first plurality of electrodes having at least one electrode; providing a second plurality of electrodes having at least two electrodes; locating the first and the second plurality of electrodes on cranium of a subject and supplying electric current of opposite polarities to the first and the second plurality of electrodes. At least one electrode of the first plurality of electrodes is surrounded by at least two electrodes of the second plurality of electrodes. The enhanced focal stimulation may be used to treat ailments or augment cognitive performance. There are also provided methods for treating brain related ailments and performance augmentation. | 06-16-2011 |
20130226267 | Method to reduce heating at implantable medical devices including neuroprosthetic devices - A method to control tissue/device heating at implantable medical devices including neuroprosthetic devices. In a first embodiment, thermal conductivity of components of the implantable medical devices including the neuroprosthetic devices is increased. In a second embodiment, the implantable medical devices including the neuroprosthetic devices are cooled by using heat-sinks. In a third embodiment, portions of the implantable medical devices including the neuroprosthetic devices are replaced with specific thermal properties. In a fourth embodiment, the implantable medical devices including the neuroprosthetic devices are coated with a drug/material that will induce surrounding tissue to become more resistant to temperature increases. In a fifth embodiment, the temperature increase near the implantable devices including the neuroprosthetic devices is determined using a modified bio-heat transfer model. In a sixth embodiment, the shape of the outer or the inner surface of the device is modified. | 08-29-2013 |
Patent application number | Description | Published |
20110224518 | HANDHELD APPARATUS TO DETERMINE THE VIABILITY OF A BIOLOGICAL TISSUE - The present invention provides for a handheld apparatus for in vivo examination of the viability of a biological tissue. | 09-15-2011 |
20110319975 | Methods for Reducing Discomfort During Electrostimulation, and Compositions and Apparatus Therefor - An electrode assembly for neuro-cranial stimulation includes an electrode, a conductive gel, and an adapter including an interior compartment for positioning the electrode relative to the adapter and for receiving and retaining the conductive gel. The conductive gel contacts the electrode along an electrode-gel interface. An orifice at one end of the interior compartment and adjacent to a positioning surface of the adapter for positioning the electrode assembly against a skin surface of a user enables the conductive gel is able to contact the skin surface of the user to define a gel-skin interface, such that a minimum distance between the electrode-gel interface and the gel-skin interface is maintained between 0.25 cm and 1.3 cm. An electrode assembly mounting apparatus is provided for adjustably positioning a plurality of electrode assemblies against target positions on the cranium. | 12-29-2011 |
20120209346 | TRANSCRANIAL STIMULATION - A method includes coupling electrodes to a patient's head and identifying whether any of the electrodes form a functional set, such that a desired therapeutic effect is achieved when the two or more electrodes deliver a total amount of current to the patient regardless of what portion of the total amount of current each respective electrode carries. One or more constant current sources are provided, each having a supply and return terminal, which supply and return equal amounts of current at any given time. The constant current source(s) are coupled to the electrodes in such a manner that each supply terminal and each return terminal is coupled to no more than the electrodes of a single one of the functional sets, if any, or to a single one of the electrodes not included in one of the functional sets. | 08-16-2012 |
20120245653 | NEUROCRANIAL ELECTROSTIMULATION MODELS, SYSTEMS, DEVICES AND METHODS - Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for developing transcranial electrical stimulation protocols are disclosed. In one aspect, a method includes the actions of accepting an image model of target tissue, obtaining a forward model having a first electrode configuration and first electrical stimulation parameters based on electrical stimulation of the target tissue, accepting electrode configuration changes or electrical stimulation parameter changes resulting in a second electrode configuration or second electrical stimulation parameters, determining an optimized tissue model using a least square methodology and based on the second electrode configuration or second electrical stimulation parameter changes, comparing the optimized tissue model with a desired outcome, and providing a confirmation of the optimized model with the desired outcome. | 09-27-2012 |
20120265261 | Neurocranial Electrostimulation Models, Systems, Devices, and Methods - Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for developing transcranial electrical stimulation protocols are disclosed. In one aspect, a method includes forming a first array of electrodes and optimizing a plurality of electrode parameters within the first array of electrodes to achieve a desired physiological response; identifying one or more electrodes within the optimized first array that have relatively low current compared to the remaining electrodes in the first array; removing the identified low current electrodes from the first array to form a second array of electrodes, wherein the number of electrodes in the second array is less than the number of electrodes in the first array and optimizing a plurality of electrode parameters with the second array of electrodes to achieve a desired physiological response. | 10-18-2012 |
20130184779 | VOLTAGE LIMITED NEUROSTIMULATION - Methods and systems for delivering voltage limited neurostimulation to a patient. In one aspect, a method includes initiating a flow of electrical current through a first electrode and a second electrode coupled to the patient and increasing the flow of electrical current toward a target value by increasing a voltage across the first electrode and second electrode. Prior to reaching the target value of electrical current, the method includes preventing the voltage across the first electrode and second electrode from increasing beyond a first predetermined limit; and subsequently, maintaining the voltage across the first electrode and second electrode at or within a predetermined range that does not exceed the first predetermined limit. The amplitude of the electrical current continues to increase toward the target value during at least part of a time when the voltage across the first electrode and the second electrode is maintained within the predetermined range. | 07-18-2013 |
20130268038 | Electrode Assembly - An electrode assembly includes a substantially porous element configured to be coupled to an electrode for delivery of electrical current to a patient in a neurostimulation procedure. The substantially porous material defining a contact surface, of which at least a portion contacts the patient during the neurostimulation procedure. A first insulating member is coupled to the substantially porous element and exposed at the contact surface to prevent a portion of the contact surface from contacting the patient to deliver the electrical current during the neurostimulation procedure. | 10-10-2013 |