Patent application number | Description | Published |
20110045056 | HYDROGEL CO-POLYMER COMPOSITION AND ITS USES, FOR EXAMPLE AS A WOUND DRESSING - The present invention provides a hydrogel composition, preferably for the treatment of wounds, comprising a hydrophilic co-polymer carrying multiple pendant anionic groups, wherein the polymer is derived from a first monomer and a second monomer, wherein both monomers have an octanohwater partition coefficient Log P value of less than 0, and, the Log P value of the first monomer is greater (more positive) than the second monomer. Preferably the difference between the Log P value for the two monomers is at least 0.1, preferably at least 0.2. The difference between the Log P value for the two monomers is preferably less than 2. The weight ratio (w/w) of the first monomer/second monomer in the hydrogel composition is preferably equal to or more than about 1. The pendant anionic groups may be sulphonyl groups, e.g. sulphonic acid groups or salts thereof. The anionic group in both first and second monomers may be in salt form and the counterion for both monomers is preferably the same. | 02-24-2011 |
20110135726 | HYDROGEL COMPOSITES AND WOUND DRESSINGS - The present invention provides an absorbent hydrogel composite for use in the manufacture of an article for application to a fluid-emitting surface, e.g. a wound, the composite having a laminar structure comprising first and second layers, the first layer being a surface contacting layer comprising a porous net structure having a surface contacting face and an outwardly directed face, the second layer comprising a low-crosslinked absorbent hydrogel disposed over the outwardly directed face of the first layer and arranged so that in use it is in fluid flow communication with the surface through apertures of the net structure. | 06-09-2011 |
20110190722 | COMPOSITIONS FOR USE AS OR IN WOUND DRESSINGS - The present invention provides a composition for the treatment of a wound, the composition comprising: a first layer, which comprises a porous, optionally hydrophilic material capable of absorbing fluid from the wound at least in part by capilliary action, a second layer comprising an absorbent hydrogel, the first layer being associated with the second layer, wherein, in the treatment, the first layer is disposed closer to the wound than the second layer and the composition modulates the concentration of dissolved ions in the fluid in the wound. The present invention further provides uses of the composition and methods of making the composition. | 08-04-2011 |
20140235727 | ANTIMICROBIAL HYDROGEL POLYMERS - The present invention relates generally to antimicrobial hydrogel polymers, and dressings comprising one or more hydrogel-forming hydrophilic polymers, where the hydrogels and dressings further comprise one or more antimicrobial agents that are released from the hydrogel in a controlled manner. The hydrogels and dressings may be used for medical, veterinary, and/or cosmetic applications. The dressings may be applied, for example, as wound dressings, surgical dressings, and percutaneous site dressings. In certain aspects of the invention, the dressings may be beneficially used in methods of accelerating wound healing, preventing and/or reducing the incidence of wound infection, and reducing scarring associated with wounds. | 08-21-2014 |
20140249496 | COMPOSITIONS FOR USE AS OR IN WOUND DRESSINGS - The present invention provides a composition for the treatment of a wound, the composition comprising:
| 09-04-2014 |
Patent application number | Description | Published |
20100143478 | TREATMENT OF INFLAMMATION AND THE COMPLEMENT AND KININ CASCADES IN A PATIENT, PARTICULARLY IN CHRONIC ULCEROUS SKIN LESIONS - The invention provides methods of inhibiting inflammation and/or the complement cascade and/or the kinin cascade in a human or non-human animal patient, particularly in a wound (for example, a chronic ulcerous skin lesion) in a human or non-human mammal (particularly a human). The affected location of the patient is contacted with a hydrogel composition comprising a hydrophilic polymer carrying multiple pendant sulphonyl groups, optionally with multiple pendant carboxylic groups, on each polymer molecule. | 06-10-2010 |
20100183722 | MODULATION OF PROTEASES. PARTICULARLY IN THE TREATMENT OF CHRONIC ULCEROUS SKIN LESIONS - The invention provides a method of modulating proteases, particularly when treating a wound (for example, a chronic ulcerous skin lesion) in a human or non-human mammal (particularly a human). The medium containing the proteases (e.g. the wound) is contacted with a topical hydrogel composition comprising a hydrophilic polymer carrying multiple pendant sulphonyl groups, optionally with multiple pendant carboxylic groups, on each polymer molecule. | 07-22-2010 |
20150267042 | HYDROGEL COMPOSITES - Disclosed herein is a hydrogel/fibre composite structure producible by a method comprising: partially impregnating fibres of a water-swellable fibrous material with an aqueous hydrogel precursor solution comprising at least one polymerisable, and optionally crosslinkable, monomer such that at least partial swelling of the impregnated fibres takes place, and polymerising, and optionally crosslinking, the at least one monomer after impregnation of the fibres and at least partial swelling of the fibres to form the hydrogel within the impregnated fibres of the fibrous material, such that the integrity of the fibrous material is at least partially preserved in the resulting hydrogel/fibre composite. A method of producing the hydrogel/fibre composite structure and a biomedical product comprising the hydrogel/fibre composite structure are also disclosed herein. | 09-24-2015 |
Patent application number | Description | Published |
20090148394 | TREATMENT OF CHRONIC ULCEROUS SKIN LESIONS - The invention provides a method of treating a wound (for example, a chronic ulcerous skin lesion) in a human or non-human mammal (particularly a human). The wound is contacted with a topical hydrogel composition comprising a hydrophilic polymer carrying multiple pendant sulphonyl groups, optionally with multiple pendant carboxylic groups, on each polymer molecule. | 06-11-2009 |
20120114591 | TREATMENT OF CHRONIC ULCEROUS SKIN LESIONS - The invention provides a method of treating a wound (for example, a chronic ulcerous skin lesion) in a human or non-human mammal (particularly a human). The wound is contacted with a topical hydrogel composition comprising a hydrophilic polymer carrying multiple pendant sulphonyl groups, optionally with multiple pendant carboxylic groups, on each polymer molecule. | 05-10-2012 |
20130251665 | TREATMENT OF CHRONIC ULCEROUS SKIN LESIONS - The invention provides a method of treating a wound (for example, a chronic ulcerous skin lesion) in a human or non-human mammal (particularly a human). The wound is contacted with a topical hydrogel composition comprising a hydrophilic polymer carrying multiple pendant sulphonyl groups, optionally with multiple pendant carboxylic groups, on each polymer molecule. | 09-26-2013 |
Patent application number | Description | Published |
20090310784 | QKD System Alignment - QKD receiving apparatus is provided with an alignment-correction system for correcting misalignment of a quantum signal received at an optical port of the apparatus relative to a quantum-signal detector of the receiving apparatus. The alignment-correction system comprises a misalignment measuring subsystem for making multiple different misalignment measures, and a misalignment compensation subsystem for adjusting the relative alignment of the quantum signal and quantum-signal detector in dependence on the misalignment measures made. The misalignment measuring subsystem comprises an alignment-beam source, an alignment-beam detector arrangement, and optical components for guiding an alignment beam from the alignment-beam source to the optical port, and for guiding the alignment beam, after external retro-reflection at a cooperating QKD transmitting apparatus from the optical port to the alignment-beam detector arrangement. | 12-17-2009 |
20100080394 | QKD transmitter and transmission method - In order to facilitate alignment of a QKD transmitter and QKD receiver, the transmitter is provided with a retro-reflector for returning to the receiver a photon beam originating at the latter. The transmitter is arranged to polarization modulate the retro-reflected beam. The transmitter is provided both with an intensity detector for generating an indication of retro-reflected photon intensity, and an intensity-dependent controller for controlling the QKD transmitter in dependence on the detected photon intensity. In one embodiment, this control involves aborting operation of the QKD transmitter upon an unexpectedly high photon intensity being detected; in another embodiment, the intensity indication is used to control the attenuation of the retro-reflected beam so as stabilize the average retro-reflected photon count per unit time. | 04-01-2010 |
20120093521 | Quantum Repeater And System And Method For Creating Extended Entanglements - A method is provided of creating an end-to-end entanglement ( | 04-19-2012 |
20120134675 | Quantum Repeater And System And Method For Creating Extended Entanglements - An iterative method is provided for progressively building an end-to-end entanglement between qubits in first and second end nodes ( | 05-31-2012 |
20120148237 | Quantum Repeater And System And Method For Creating Extended Entanglements - A method is provided of creating an end-to-end entanglement ( | 06-14-2012 |
20120155870 | Method And Apparatus For Selectively Routing Entanglement Building - A method and apparatus ( | 06-21-2012 |
20120177200 | QUANTUM KEY DISTRIBUTION METHOD AND APPARATUS - A QKD transmission apparatus comprises a GPS receiver module operable to receive a GPS signal, and a processor operable to use the GPS signal to derive a clock signal for transmission of a QKD signal. | 07-12-2012 |
20130163759 | QUANTUM KEY DISTRIBUTION METHOD AND APPARATUS - A QKD transmission method comprises generating a transmission list for a plurality of data bits, the list comprising a randomized timing schedule defining respective times for transmission of the data bits, providing a clock signal and using the clock signal to initiate the transmission of the data bits at a predetermined time in order to provide a QKD signal, and an apparatus therefor. | 06-27-2013 |
Patent application number | Description | Published |
20090039248 | Detection apparatus - An ion mobility spectrometer has a pair of electrodes ( | 02-12-2009 |
20090090196 | Preconcentrator and Detector Apparatus - IMS apparatus has a preconcentrator ( | 04-09-2009 |
20090206246 | Detection Apparatus and Methods - Detection apparatus including an IMS detector ( | 08-20-2009 |
20090309019 | FAIMS Apparatus Comprising Source of Dry Gas - An ion mobility spectrometer has an inlet opening into an ionization region including a conventional ionization source. A series of several charged, circular electrode plates with aligned apertures extending therethrough provides a drift region on the opposite side of the ionization region from the inlet. A gas inlet connected to a source of clean, dry flushing gas opens between the ends of the drift region, with the gas flowing against the ion flow to one side to remove water molecules from the analyte. Gas flowing in the opposite direction is effective to help drive the dry analyte ions to an analysis region provided by two parallel asymmetric field plates. | 12-17-2009 |
20100090100 | Spectrometer Apparatus - An ion mobility spectrometer has several electrodes spaced along its ion source region. Voltages are applied to the electrodes to produce a voltage gradient along the length of the ion source region. By varying the voltage gradient, the residence time of ions in the ion source region can be selectively varied. Typically, the spectrometer is arranged to reduce the residence time in response to a decrease in the amplitude, of an ion peak detected at the far end of the drift region. | 04-15-2010 |
20100308216 | FAIMS Ion Mobility Spectrometer With Multiple Doping - A FAIMS ion mobility spectrometer is arranged so that the analyte is subject to different ion chemistries at different locations along the spectrometer. Different dopants, or different concentrations of dopants or water vapor are admitted at various locations, such as at the inlet, between the inlet and the ionizer between the ionizer and the gate, between the gate and the FAIMS parallel plates, through an opening in one of the plates, or between the end of the plates and the detector. | 12-09-2010 |
20110284739 | DETECTION APPARATUS - An ion mobility spectrometer has a pair of electrodes and midway along the drift chamber. A high field is applied between the electrodes and sufficient to modify ions in the region of thee electrodes such that they move at a different rate towards the collector plate. This is used to modify the time of flight of selected ions or ion clusters and enable identification of ambiguous peaks on the IMS spectrum. | 11-24-2011 |
20120273672 | Spectrometer Apparatus - An ion mobility spectrometer has several electrodes spaced along its ion source region. Voltages are applied to the electrodes to produce a voltage gradient along the length of the ion source region. By varying the voltage gradient, the residence time of ions in the ion source region can be selectively varied. Typically, the spectrometer is arranged to reduce the residence time in response to a decrease in the amplitude, of an ion peak detected at the far end of the drift region. | 11-01-2012 |
20130056632 | Detectors And Ion Sources - A field asymmetric ion mobility spectrometer (FAIMS) has an analyte ion source assembly by which an analyte substance is ionized and supplied to the inlet of the spectrometer. The ion source assembly has an upstream source of clean, dry air and two ion sources of opposite polarity arranged at the same distance along the flow path. The ion sources are arranged so that the overall charge of the plasma produced is substantially neutral. The analyte substance is admitted via an inlet downstream of the ion sources and flows into a reaction region of enlarged cross section to slow the flow and increase the time for which the analyte molecules are exposed to the plasma. | 03-07-2013 |
Patent application number | Description | Published |
20090260832 | Non-Orientated Tubing Hanger With Full Bore Tree Head - A subsea wellhead assembly includes a wellhead housing, a production tree, a tubing hanger adapted to land in the wellhead assembly inside the wellhead housing without a need for angular orientation, a bridge member on the tubing hanger in the production tree, a port radially formed through the tubing hanger or the bridge member, a production port radially through the tree head housing, and an annular production flow passage that circumscribes the bridge member lower portion on one end and optionally circumscribes the tubing hanger on its other end. The annular production flow passage is in communication with both the production port and the radial port in the tubing hanger or bridge member so that fluid can be produced from the well via the annular production flow passage without necessity to orientate the tubing hanger. | 10-22-2009 |
20120024536 | WELLHEAD TREE PRESSURE LIMITING DEVICE - A pressure relief device is used to relieve pressure in a void within a wellhead housing. In one embodiment, the pressure relief device includes a plunger having a stepped plug, wherein the plug can be fully open to allow flow from the void, restricted to allow a predetermined flow to relieve pressure, or closed to prevent flow from the void. In another embodiment, the pressure relief device includes a vacuum puller that creates negative pressure in a vessel. As fluid in the void expands, it is able to enter the space formerly occupied by the plunger. In yet another embodiment, a rupture disc is used to prevent fluid from flowing from the void, through a passage, to the wellbore. If pressure in the void exceeds a predetermined value, the rupture disc yields and allows the trapped fluid to flow to the wellbore. | 02-02-2012 |
20120160512 | WELLHEAD TREE PRESSURE LIMITING DEVICE - A pressure relief device is used to relieve pressure in a void within a wellhead housing. In one embodiment, the pressure relief device includes a plunger having a stepped plug, wherein the plug can be fully open to allow flow from the void, restricted to allow a predetermined flow to relieve pressure, or closed to prevent flow from the void. In another embodiment, the pressure relief device includes a vacuum puller that creates negative pressure in a vessel. As fluid in the void expands, it is able to enter the space formerly occupied by the plunger. In yet another embodiment, a rupture disc is used to prevent fluid from flowing from the void, through a passage, to the wellbore. If pressure in the void exceeds a predetermined value, the rupture disc yields and allows the trapped fluid to flow to the wellbore. | 06-28-2012 |
20120168173 | WELLHEAD TREE PRESSURE COMPENSATING DEVICE - A pressure mitigating device is used to reduce pressure in a void within a wellhead housing. In one embodiment, the pressure mitigating device includes two plates that define a void between them. Increased pressure in the wellhead housing causes the plates to elastically displace towards each other. The plates contact each other, limiting the displacement prior to plastic deformation. | 07-05-2012 |