Patents by Inventor David Fielder
David Fielder 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: 11826536Abstract: An implantable percutaneous fluid delivery device is described that includes a subcutaneous base portion having one or more ports for supplying fluid to one or more implanted catheter devices and a percutaneous portion including an extracorporeal surface. The one or more ports of the subcutaneous base portion are accessible from the extracorporeal surface of the percutaneous portion. The subcutaneous base portion is at least partially insertable into a complementary recess formed in a bone, the subcutaneous base portion including one or more features for gripping the internal surface of such a complementary recess thereby directly anchoring the subcutaneous base portion to the bone. The device may be used to route fluid to neurosurgical catheters optionally via a router unit.Type: GrantFiled: March 23, 2020Date of Patent: November 28, 2023Assignee: RENISHAW (IRELAND) LIMITEDInventors: Paul David Fielder, Steven S Gill, Trefor Owen Lewis, Andrew Samuel Vick
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Patent number: 11717663Abstract: Apparatus for delivering therapeutic agents to the central nervous system of a subject is described. The apparatus includes at least one intracranial catheter and a percutaneous access device. The percutaneous access device includes a body having at least one extracorporeal surface and at least one subcutaneous surface, the body defining at least one port for connection to an implanted intracranial catheter. The port is accessible from the extracorporeal surface of the device, but is provided with a seal such as a rubber bung between the lumen of the port and the extracorporeal surface. The percutaneous access device may have more than two ports and/or a flange. A method of implanting the percutaneous access device is also described.Type: GrantFiled: August 20, 2020Date of Patent: August 8, 2023Assignee: RENISHAW (IRELAND) LIMITEDInventors: Steven Streatfield Gill, Paul David Fielder
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Publication number: 20200376252Abstract: Apparatus for delivering therapeutic agents to the central nervous system of a subject is described. The apparatus includes at least one intracranial catheter and a percutaneous access device. The percutaneous access device includes a body having at least one extracorporeal surface and at least one subcutaneous surface, the body defining at least one port for connection to an implanted intracranial catheter. The port is accessible from the extracorporeal surface of the device, but is provided with a seal such as a rubber bung between the lumen of the port and the extracorporeal surface. The percutaneous access device may have more than two ports and/or a flange. A method of implanting the percutaneous access device is also described.Type: ApplicationFiled: August 20, 2020Publication date: December 3, 2020Applicant: RENISHAW (IRELAND) LIMITEDInventors: Steven Streatfield GILL, Paul David FIELDER
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Patent number: 10751520Abstract: Apparatus for delivering therapeutic agents to the central nervous system of a subject is described. The apparatus includes at least one intracranial catheter and a percutaneous access device. The percutaneous access device includes a body having at least one extracorporeal surface and at least one subcutaneous surface, the body defining at least one port for connection to an implanted intracranial catheter. The port is accessible from the extracorporeal surface of the device, but is provided with a seal such as a rubber bung between the lumen of the port and the extracorporeal surface. The percutaneous access device may have more than two ports and/or a flange. A method of implanting the percutaneous access device is also described.Type: GrantFiled: December 23, 2014Date of Patent: August 25, 2020Assignee: RENISHAW (IRELAND) LIMITEDInventors: Steven Streatfield Gill, Paul David Fielder
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Publication number: 20200215318Abstract: An implantable percutaneous fluid delivery device is described that includes a subcutaneous base portion having one or more ports for supplying fluid to one or more implanted catheter devices and a percutaneous portion including an extracorporeal surface. The one or more ports of the subcutaneous base portion are accessible from the extracorporeal surface of the percutaneous portion. The subcutaneous base portion is at least partially insertable into a complementary recess formed in a bone, the subcutaneous base portion including one or more features for gripping the internal surface of such a complementary recess thereby directly anchoring the subcutaneous base portion to the bone. The device may be used to route fluid to neurosurgical catheters optionally via a router unit.Type: ApplicationFiled: March 23, 2020Publication date: July 9, 2020Applicant: RENISHAW (IRELAND) LIMITEDInventors: Paul David FIELDER, Steven S. GILL, Trefor Owen LEWIS, Andrew Samuel VICK
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Patent number: 10596362Abstract: An implantable percutaneous fluid delivery device is described that includes a subcutaneous base portion having one or more ports for supplying fluid to one or more implanted catheter devices and a percutaneous portion including an extracorporeal surface. The one or more ports of the subcutaneous base portion are accessible from the extracorporeal surface of the percutaneous portion. The subcutaneous base portion is at least partially insertable into a complementary recess formed in a bone, the subcutaneous base portion including one or more features for gripping the internal surface of such a complementary recess thereby directly anchoring the subcutaneous base portion to the bone. The device may be used to route fluid to neurosurgical catheters optionally via a router unit.Type: GrantFiled: July 29, 2014Date of Patent: March 24, 2020Assignee: RENISHAW (IRELAND) LIMITEDInventors: Paul David Fielder, Steven S Gill, Trefor Owen Lewis, Andrew Samuel Vick
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Publication number: 20160296293Abstract: Surgical apparatus is described that includes a surgical robot having a moveable arm for carrying a surgical tool. The apparatus also has x-ray imaging apparatus that includes at least one of an x-ray source and an x-ray detector. The moveable arm of the surgical robot is configured to carry at least one of the x-ray source and the x-ray detector. In this manner, the surgical robot can be used to perform x-ray imaging to allow patient registration. Methods of using the apparatus are also described.Type: ApplicationFiled: November 21, 2014Publication date: October 13, 2016Applicant: RENISHAW PLCInventors: Steven Streatfield GILL, Geoffrey MCFARLAND, Robert Neil HARRISON, Paul David FIELDER
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Publication number: 20150157842Abstract: Apparatus for delivering therapeutic agents to the central nervous system of a subject is described. The apparatus includes at least one intracranial catheter and a percutaneous access device. The percutaneous access device includes a body having at least one extracorporeal surface and at least one subcutaneous surface, the body defining at least one port for connection to an implanted intracranial catheter. The port is accessible from the extracorporeal surface of the device, but is provided with a seal such as a rubber bung between the lumen of the port and the extracorporeal surface. The percutaneous access device may have more than two ports and/or a flange. A method of implanting the percutaneous access device is also described.Type: ApplicationFiled: December 23, 2014Publication date: June 11, 2015Applicant: Renishaw (Ireland) LimitedInventors: Steven Streatfield GILL, Paul David FIELDER
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Patent number: 8974422Abstract: Apparatus for delivering therapeutic agents to the central nervous system of a subject is described. The apparatus comprises at least one intracranial catheter and a percutaneous access device. The percutaneous access device comprises a body having at least one extracorporeal surface and at least one subcutaneous surface, the body defining at least one port for connection to an implanted intracranial catheter. The port is accessible from the extracorporeal surface of the device, but is provided with a seal such as a rubber bung between the lumen of the port and the extracorporeal surface. The percutaneous access device may have more than two ports and/or a flange. A method of implanting the percutaneous access device is also described.Type: GrantFiled: November 21, 2007Date of Patent: March 10, 2015Assignee: Renishaw (Ireland) LimitedInventors: Steven Streatfield Gill, Paul David Fielder
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Publication number: 20140343500Abstract: An implantable percutaneous fluid delivery device is described that includes a subcutaneous base portion having one or more ports for supplying fluid to one or more implanted catheter devices and a percutaneous portion including an extracorporeal surface. The one or more ports of the subcutaneous base portion are accessible from the extracorporeal surface of the percutaneous portion. The subcutaneous base portion is at least partially insertable into a complementary recess formed in a bone, the subcutaneous base portion including one or more features for gripping the internal surface of such a complementary recess thereby directly anchoring the subcutaneous base portion to the bone. The device may be used to route fluid to neurosurgical catheters optionally via a router unit.Type: ApplicationFiled: July 29, 2014Publication date: November 20, 2014Inventors: Paul David FIELDER, Steven S. GILL, Trefor Owen LEWIS, Andrew Samuel VICK
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Patent number: 8815268Abstract: A simple and efficient method for the production of stable, clear, high-potency oat extracts is disclosed. The method employs the use of differential dissociation constants and ultrafiltration to stabilise extracts, prevent hazing, and prevent the loss of functional activity as an anti-irritant and anti-oxidant. Also disclosed are compositions of oat extracts derived from whole oat grains and oatmeal. Further disclosed are compositions of oat extracts for use in cosmetic, nutraceutical, therapeutic medical and veterinary preparations.Type: GrantFiled: August 2, 2013Date of Patent: August 26, 2014Assignee: CEAPRO, Inc.Inventors: Mark J. Redmond, David A. Fielder
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Publication number: 20140066510Abstract: A simple and efficient method for the production of stable, clear, high-potency oat extracts is disclosed. The method employs the use of differential dissociation constants and ultrafiltration to stabilise extracts, prevent hazing, and prevent the loss of functional activity as an anti-irritant and anti-oxidant. Also disclosed are compositions of oat extracts derived from whole oat grains and oatmeal. Further disclosed are compositions of oat extracts for use in cosmetic, nutraceutical, therapeutic medical and veterinary preparations.Type: ApplicationFiled: August 2, 2013Publication date: March 6, 2014Inventors: Mark J. Redmond, David A. Fielder
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Patent number: 8632798Abstract: Cereal ?(1-3) ?(1-4) glucan is used as a film or coating agent to produce clear, edible, biodegradable, delivery, lubricating, and protecting agents. Cereal ?(1-3) ?(1-4) glucans are distinctive polymers of glucose differentiated from other polymers by not only their source but also their physicochemical properties. The ?(1-3) ?(1-4) forms a matrix to sequester other materials, such as pharmaceutical, medical and therapeutic agents, flavors, fragrances. The technology has applications to essential oils and non-aqueous materials that are rendered deliverable by the ?(1-3) ?(1-4) glucan. The ?(1-3) ?(1-4) glucan films described may be consumed whereby they dissolve in the mouth in a controlled manner and may be used for the delivery of pharmaceutical, medical or confectionery products.Type: GrantFiled: March 3, 2010Date of Patent: January 21, 2014Assignee: Ceapro Inc.Inventors: Mark J. Redmond, David A. Fielder
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Patent number: 8512719Abstract: A simple and efficient method for the production of stable, clear, high-potency oat extracts is disclosed. The method employs the use of differential dissociation constants and ultrafiltration to stabilize extracts, prevent hazing, and prevent the loss of functional activity as an anti-irritant and anti-oxidant. Also disclosed are compositions of oat extracts derived from whole oat grains and oatmeal. Further disclosed are compositions of oat extracts for use in cosmetic, nutraceutical, therapeutic medical and veterinary preparations.Type: GrantFiled: January 25, 2011Date of Patent: August 20, 2013Assignee: Ceapro Inc.Inventors: Mark J. Redmond, David A. Fielder
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Patent number: 8084914Abstract: A downhole electric motor device has a longitudinally extending tubular housing; a stator part deployed within the tubular housing; a stator coil winding looped through the stator part with an end turn having an apex; and a connecting device connecting between at least one of the coil windings and an end of the housing adjacent to an end of the stator part, thereby supporting the coil winding.Type: GrantFiled: January 26, 2009Date of Patent: December 27, 2011Assignee: Schlumberger Technology CorporationInventors: Patrick M. McCartney, David Fielder
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Publication number: 20110118352Abstract: A simple and efficient method for the production of stable, clear, high-potency oat extracts is disclosed. The method employs the use of differential dissociation constants and ultrafiltration to stabilise extracts, prevent hazing, and prevent the loss of functional activity as an anti-irritant and anti-oxidant. Also disclosed are compositions of oat extracts derived from whole oat grains and oatmeal. Further disclosed are compositions of oat extracts for use in cosmetic, nutraceutical, therapeutic medical and veterinary preparations.Type: ApplicationFiled: January 25, 2011Publication date: May 19, 2011Applicant: CEAPRO, INC.Inventors: Mark J. REDMOND, David A. Fielder
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Publication number: 20110059031Abstract: The present invention relates to oral compositions comprising a ? (1-3) ? (1-4) glucan and one, or more than one compound of interest. In particular, the present invention provides an oral composition comprising an effective amount of a ? (1-3) ? (1-4) glucan and an effective amount of one, or more than one of an antibacterial agent, a botanical extract, and a flavouring agent, and also provides a method of using this composition for maintaining fresh breath in a subject over a prolonged period of time.Type: ApplicationFiled: November 12, 2010Publication date: March 10, 2011Applicant: CEAPRO INC.Inventors: Mark J. Redmond, David A. Fielder
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Patent number: 7887823Abstract: A simple and efficient method for the production of stable, clear, high-potency oat extracts is disclosed. The method employs the use of differential dissociation constants and ultrafiltration to stabilize extracts, prevent hazing, and prevent the loss of functional activity as an anti-irritant and anti-oxidant. Also disclosed are compositions of oat extracts derived from whole oat grains and oatmeal. Further disclosed are compositions of oat extracts for use in cosmetic, nutraceutical, therapeutic medical and veterinary preparations.Type: GrantFiled: July 29, 2004Date of Patent: February 15, 2011Assignee: CEAPRO, Inc.Inventors: Mark J. Redmond, David A. Fielder
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Publication number: 20110009879Abstract: A skull mount (50;150;170;200;300) is described that is attachable to a hole (60) formed in the skull. The skull mount (50;150;170;200;300) comprises an alignment guide (62;152;172;216;306) defining an alignment axis (22;210;312) along which neurosurgical instruments can be passed. The skull mount, when attached to a hole in a skull, is arranged such that it does not substantially protrude from the outermost surface of the skull and does not extend into the brain parenchyma. Also described is a neurosurgical alignment instrument (30,206) for aligning such a skull mount (50;150;170;200;300) that comprises an elongate shaft (32) and an element (34,36) protruding from the distal end of the elongate shaft (32) for engaging and aligning the alignment guide (62;152;172;216;306) of an associated skull mount (50;150;170;200;300).Type: ApplicationFiled: October 6, 2008Publication date: January 13, 2011Applicant: RENISHAW (IRELAND) LIMITEDInventors: Hugo George Derrick, Paul David Fielder, Steven Streatfield Gill
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Publication number: 20100318064Abstract: A neurosurgical catheter is described for insertion into the brain parenchyma of a subject. The catheter comprises a flexible tube and has a stiff, non-porous, tip comprising at least one fluid delivery aperture. The stiff tip of the catheter may be mechanically stiffer than the flexible tube. The stiff tip may be provided by a stiff tube attached to the distal end of the flexible tube. The stiff tube may comprise a ceramic (e.g fused silica) and/or a metal. A kit comprising the catheter and a guide tube is also described. Methods of catheter implantation are also outlined.Type: ApplicationFiled: February 11, 2009Publication date: December 16, 2010Applicant: RENISHAW (IRELAND) LIMITEDInventors: Hugo George Derrick, Mathew David Frederick Stratton, Paul David Fielder