Patents by Inventor Varuni Rachindra Brownhill
Varuni Rachindra Brownhill 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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Publication number: 20240115161Abstract: An apparatus for monitoring neural response and/or providing treatment includes an electrical stimulator configured to apply electrical stimulation, and one or more processors configured to analyze stimulation response. The one or more processors can be further configured to operate the electrical stimulator, adjust the electrical stimulation, and determine one or more wound characteristics based at least in part on at least one of the electrical stimulation or the stimulation response, e.g. a movement of a patient, a color absorption characteristic, or other physiological responses. An indication of the one or more wound characteristics can be provided.Type: ApplicationFiled: November 2, 2023Publication date: April 11, 2024Inventors: Varuni Rachindra Brownhill, Victoria Jody Hammond, Allan Kenneth Frazer Grugeon Hunt, Charlotte Urwin
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Publication number: 20240009035Abstract: In some embodiments, a wound dressing that incorporates a number of sensors or sensors separate from the wound dressing can be utilized in order to monitor characteristics of a wound as it heals or to identify one or more risk factors or conditions that may precipitate a wound. In some implementations, a wound dressing configured to be positioned in contact with a wound includes a substantially flexible substrate supporting one or more sensors. The one or more sensors can include temperature sensors, conductivity sensors, multispectral optical measurements sensors, sensors, pressure sensors, colorimetric sensors, optical sensors, ultraviolet (UV) sensors, or infrared (IR) sensors.Type: ApplicationFiled: June 26, 2023Publication date: January 11, 2024Inventors: Varuni Rachindra Brownhill, Nicholas John Collier, James Christopher Frake, Victoria Hammond, Edward Yerbury Hartwell, Allan Kenneth Frazer Grugeon Hunt, Gordon John Leather, Simon Mark Norman, Charlotte Urwin
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Patent number: 11839464Abstract: An apparatus for monitoring neural response and/or providing treatment includes an electrical stimulator configured to apply electrical stimulation, and one or more processors configured to analyze stimulation response. The one or more processors can be further configured to operate the electrical stimulator, adjust the electrical stimulation, and determine one or more wound characteristics based at least in part on at least one of the electrical stimulation or the stimulation response, e.g. a movement of a patient, a color absorption characteristic, or other physiological responses. An indication of the one or more wound characteristics can be provided.Type: GrantFiled: September 24, 2018Date of Patent: December 12, 2023Assignee: Smith & Nephew, PLCInventors: Varuni Rachindra Brownhill, Victoria Jody Hammond, Allan Kenneth Frazer Grugeon Hunt, Charlotte Urwin
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Publication number: 20230277380Abstract: Embodiments disclosed herein are directed to negative pressure treatment systems and wound dressing systems, apparatuses, and methods that may be used for the treatment of wounds. In particular, some embodiments are directed to improved wound dressings comprising a number of viewing portals that facilitate observation of wound tissue or healthy skin underlying the wound dressing. Some embodiments of the viewing portals are provided by forming through holes in internal dressing layers including absorbent material and transmission material, optionally by providing a plug material within the through holes, and by providing translucent or transparent cover layer and tissue contact layer materials.Type: ApplicationFiled: February 17, 2023Publication date: September 7, 2023Inventors: Edward Yerbury Hartwell, Varuni Rachindra Brownhill, John Gowans
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Publication number: 20230248314Abstract: Embodiments of apparatuses and methods for determining an emplacement of sensors in a wound dressing are disclosed. In some embodiments, a wound dressing includes a plurality of sensors configured to measure wound or patient characteristics. One or more processors are configured to receive wound or patient characteristics data as well as emplacement data. The received data can be used to determine an emplacement of the plurality of sensors, the wound dressing, or a wound. The sensors can include a set of nanosensors. The wound dressing can include pH sensitive ink which can be utilized for determining a placement of the wound dressing and determining a pH associated with the wound. The wound dressing can be used in a negative pressure wound therapy system.Type: ApplicationFiled: April 17, 2023Publication date: August 10, 2023Inventors: Varuni Rachindra Brownhill, Victoria Jody Hammond, Allan Kenneth Frazer Grugeon Hunt, Marcus Damian Phillips, Damian Smith, Charlotte Urwin
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Patent number: 11717447Abstract: In some embodiments, a wound dressing that incorporates a number of sensors or sensors separate from the wound dressing can be utilized in order to monitor characteristics of a wound as it heals or to identify one or more risk factors or conditions that may precipitate a wound. In some implementations, a wound dressing configured to be positioned in contact with a wound includes a substantially flexible substrate supporting one or more sensors. The one or more sensors can include temperature sensors, conductivity sensors, multispectral optical measurements sensors, pH sensors, pressure sensors, colorimetric sensors, optical sensors, ultraviolet (UV) sensors, or infrared (IR) sensors.Type: GrantFiled: May 12, 2017Date of Patent: August 8, 2023Assignee: Smith & Nephew PLCInventors: Varuni Rachindra Brownhill, Nicholas John Collier, James Christopher Frake, Victoria Jody Hammond, Edward Yerbury Hartwell, Allan Kenneth Frazer Grugeon Hunt, Gordon John Leather, Simon Mark Norman, Charlotte Urwin
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Publication number: 20230173306Abstract: Disclosed embodiments relate to apparatuses and methods for wound treatment with ultrasound. In certain embodiments, therapeutic ultrasound wound treatment apparatus includes a wound dressing configured to be positioned over a wound to provide a substantially fluid impermeable seal over the wound and a transducer to deliver therapeutic ultrasound to tissue. The therapeutic ultrasound wound treatment apparatus may further include a wound contact layer configured to be positioned in contact with the wound, a transmission layer positioned above the wound contact layer, an absorbent layer positioned above the transmission layer and configured to absorb wound fluid, and a backing layer positioned above the absorbent layer and including an orifice. Also disclosed are multiple parameters for the therapeutic ultrasound signal.Type: ApplicationFiled: April 22, 2021Publication date: June 8, 2023Inventors: Ben Alan Askem, Maria Aspioti, Mark Darren Bass, Varuni Rachindra Brownhill, Anthony Colin Dagger, David Michael Elder, Aimee Rebecca Paskins, Neill John Rawson, Jonathan Patrick Waller, Iain Webster
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Publication number: 20230165724Abstract: Disclosed embodiments related to a wound dressing for treating circumferential wounds for use in a negative pressure wound therapy (NPWT). The wound dressing can include a cover layer, a plurality of spacer sections, and a wound contact layer. The wound dressing can further include a port for connection to a source of negative pressure and a connector for fluidically connecting each of the plurality of sections with the port.Type: ApplicationFiled: April 28, 2021Publication date: June 1, 2023Inventors: Victoria Beadle, Varuni Rachindra Brownhill, Brian Gilchrist, Danielle Susan Johnson, Luke Michael Parry, Hannah Bailey Weedon
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Publication number: 20230158284Abstract: Disclosed embodiments relate to a wound dressing which can generate nitric oxide. The wound dressing may include a cover layer, an activator layer such as an acid providing layer and nitric oxide source layer, such as a nitrite providing layer. The activator layer may include acidic groups and may be hydrogel, xerogel, or other suitable material. The nitric oxide source layer may include a nitrite salt. Nitrite ions of the nitric oxide source layer may react with the acidic groups of the activating layer to generate nitric oxide. The activating layer may include a window at the center, and a central absorbent material may be positioned at the window. Various separating layers may also be incorporated into the dressing to control the interaction between activating layer and nitric oxide source layer.Type: ApplicationFiled: April 1, 2021Publication date: May 25, 2023Inventors: Maria Aspioti, Michael Brown, Varuni Rachindra Brownhill, Anthony Colin Dagger, Mark John Ellerington, Daniel James Fitzgerald, Nicholas Charlton Fry, Latifa Giaffar, Victoria Jody Hammond, Edward Yerbury Hartwell, Neill John Rawson, Anna Elizabeth Smith, Liam Thomson, Iain Webster
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Publication number: 20230136007Abstract: Disclosed embodiments relate to a wound dressing which can generate nitric oxide. The wound dressing comprises a cover layer, an acid providing layer and a nitrite providing layer. The acid providing layer comprises acidic groups and may be hydrogel or Xerogel. The nitrite providing layer comprises a nitrite salt. The wound dressing may also include other layers, one or more acquisition distribution layers or masking layers. The masking layers can at least partially prevent visualization of the layer below the masking layer. Nitrite ions of the nitrite providing layer may react with the acidic groups of the acid providing layer to generate nitric oxide. The acid providing layer further includes one or more material layers to reduce the adhesiveness of the acid providing layer. The acid providing layer can also include perforations.Type: ApplicationFiled: April 1, 2021Publication date: May 4, 2023Inventors: Maria Aspioti, Varuni Rachindra Brownhill, Anthony Colin Dagger, Daniel James Fitzgerald, Nicholas Charlton Fry, Latifa Giaffar, Victoria Jody Hammond, Edward Yerbury Hartwell, Neill John Rawson, Anna Elizabeth Smith, Liam Thomson, Iain Webster
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Patent number: 11633153Abstract: Embodiments of apparatuses and methods for determining an emplacement of sensors in a wound dressing are disclosed. In some embodiments, a wound dressing includes a plurality of sensors configured to measure wound or patient characteristics. One or more processors are configured to receive wound or patient characteristics data as well as emplacement data. The received data can be used to determine an emplacement of the plurality of sensors, the wound dressing, or a wound. The sensors can include a set of nanosensors. The wound dressing can include pH sensitive ink which can be utilized for determining a placement of the wound dressing and determining a pH associated with the wound. The wound dressing can be used in a negative pressure wound therapy system.Type: GrantFiled: June 21, 2018Date of Patent: April 25, 2023Assignee: Smith & Nephew PLCInventors: Varuni Rachindra Brownhill, Victoria Jody Hammond, Allan Kenneth Frazer Grugeon Hunt, Marcus Damian Phillips, Damian Smith, Charlotte Urwin
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Patent number: 11596552Abstract: Embodiments disclosed herein are directed to negative pressure treatment systems and wound dressing systems, apparatuses, and methods that may be used for the treatment of wounds. In particular, some embodiments are directed to improved wound dressings comprising a number of viewing portals that facilitate observation of wound tissue or healthy skin underlying the wound dressing. Some embodiments of the viewing portals are provided by forming through holes in internal dressing layers including absorbent material and transmission material, optionally by providing a plug material within the through holes, and by providing translucent or transparent cover layer and tissue contact layer materials.Type: GrantFiled: April 6, 2020Date of Patent: March 7, 2023Assignee: Smith & Nephew PLCInventors: Edward Yerbury Hartwell, Varuni Rachindra Brownhill, John Gowans
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Publication number: 20230054181Abstract: A negative pressure wound therapy system can include a negative pressure source configured to provide, via a fluid flow path, negative pressure to a wound covered by a wound dressing. The system can include a controller. The controller can be configured to periodically activate the negative pressure source to maintain negative pressure in the fluid flow path between a low negative pressure setpoint and a high negative pressure setpoint. The controller can be configured to determine a change in a volume of the wound based on a difference between a first time and a second time at which the high negative pressure setpoint has been established in the fluid flow path, the second time being subsequent to the first time. The controller can be configured to provide indication of the change in the volume of the wound.Type: ApplicationFiled: January 21, 2021Publication date: February 23, 2023Inventors: Varuni Rachindra Brownhill, Benjamin James Gardner, Samuel John Mortimer
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Publication number: 20220313893Abstract: Embodiments disclosed herein are directed to negative pressure treatment systems and wound dressing systems, apparatuses, and methods that may be used for the treatment of wounds. In particular, some embodiments are directed to improved wound dressings comprising an obscuring layer that may hide fluid contained therein and a stabilizing structure that may aid in wound closure.Type: ApplicationFiled: April 22, 2022Publication date: October 6, 2022Inventors: Edward Yerbury Hartwell, Varuni Rachindra Brownhill, John Gowans
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Patent number: 11344665Abstract: Embodiments disclosed herein are directed to negative pressure treatment systems and wound dressing systems, apparatuses, and methods that may be used for the treatment of wounds. In particular, some embodiments are directed to improved wound dressings comprising an obscuring layer that may hide fluid contained therein and a stabilizing structure that may aid in wound closure.Type: GrantFiled: February 1, 2019Date of Patent: May 31, 2022Assignee: Smith & Nephew PLCInventors: Edward Yerbury Hartwell, Varuni Rachindra Brownhill, John Gowans
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Publication number: 20220001212Abstract: Disclosed embodiments relate to apparatuses and methods for wound treatment with ultrasound. In certain embodiments, a therapeutic ultrasound wound treatment apparatus includes a wound dressing configured to be positioned over a wound to provide a substantially fluid impermeable seal over the wound and a transducer to deliver therapeutic ultrasound to tissue. The therapeutic ultrasound wound treatment apparatus may further include a wound contact layer configured to be positioned in contact with the wound, a transmission layer positioned above the wound contact layer, an absorbent layer positioned above the transmission layer and configured to absorb wound fluid, and a backing layer positioned above the absorbent layer and including an orifice. Also disclosed are multiple parameters for the therapeutic ultrasound signal.Type: ApplicationFiled: October 15, 2019Publication date: January 6, 2022Inventors: Mark Darren Bass, Varuni Rachindra Brownhill, Anthony Dagger, Neill John Rawson, Iain Webster
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Publication number: 20210137446Abstract: Disclosed embodiments relate to apparatuses and methods for a skin perfusion pressure determination device. In some embodiments, a skin perfusion pressure determination device can include a sensor module having a first sensor for sensing a first parameter associated with a pressure exerted on a target area by the sensor module and a second sensor for sensing a second parameter associated with an amount of blood perfusion at the target area. In some embodiments, the first sensor and the second sensor can be arranged such that, when the sensor module is pressed against the target area the first sensor produces an output corresponding to the sensed first parameter and the second sensor produces an output corresponding to the sensed second parameter.Type: ApplicationFiled: March 9, 2018Publication date: May 13, 2021Inventors: Varuni Rachindra Brownhill, Scott Grubb, Allan Kenneth Frazer Grugeon Hunt, Reece Knight, Peter Laitenberger, Lee Partington, Marcus Damian Phillips
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Publication number: 20200297244Abstract: An apparatus for monitoring neural response and/or providing treatment includes an electrical stimulator configured to apply electrical stimulation, and one or more processors configured to analyze stimulation response. The one or more processors can be further configured to operate the electrical stimulator, adjust the electrical stimulation, and determine one or more wound characteristics based at least in part on at least one of the electrical stimulation or the stimulation response, e.g. a movement of a patient, a color absorption characteristic, or other physiological responses. An indication of the one or more wound characteristics can be provided.Type: ApplicationFiled: September 24, 2018Publication date: September 24, 2020Inventors: Varuni Rachindra Brownhill, Victoria Jody Hammond, Allan Kenneth Frazer Grugeon Hunt, Charlotte Urwin
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Publication number: 20200297541Abstract: Embodiments disclosed herein are directed to negative pressure treatment systems and wound dressing systems, apparatuses, and methods that may be used for the treatment of wounds. In particular, some embodiments are directed to improved wound dressings comprising a number of viewing portals that facilitate observation of wound tissue or healthy skin underlying the wound dressing. Some embodiments of the viewing portals are provided by forming through holes in internal dressing layers including absorbent material and transmission material, optionally by providing a plug material within the through holes, and by providing translucent or transparent cover layer and tissue contact layer materials.Type: ApplicationFiled: April 6, 2020Publication date: September 24, 2020Inventors: Edward Yerbury Hartwell, Varuni Rachindra Brownhill, John Gowans
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Publication number: 20200214637Abstract: Embodiments of apparatuses and methods for determining an emplacement of sensors in a wound dressing are disclosed. In some embodiments, a wound dressing includes a plurality of sensors configured to measure wound or patient characteristics. One or more processors are configured to receive wound or patient characteristics data as well as emplacement data. The received data can be used to determine an emplacement of the plurality of sensors, the wound dressing, or a wound. The sensors can include a set of nanosensors. The wound dressing can include pH sensitive ink which can be utilized for determining a placement of the wound dressing and determining a pH associated with the wound. The wound dressing can be used in a negative pressure wound therapy system.Type: ApplicationFiled: June 21, 2018Publication date: July 9, 2020Inventors: Varuni Rachindra Brownhill, Victoria Jody Hammond, Allan Kenneth Frazer Grugeon Hunt, Marcus Damian Phillips, Damian Smith, Charlotte Urwin