Patents by Inventor Sandra Downes

Sandra Downes 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).

  • Patent number: 10413633
    Abstract: The present invention provides a peripheral nerve growth conduit for peripheral nerve repair, in particular conduits through which peripheral nerves can grow. The conduit includes poly-?-caprolactone (PCL). Preferably, the inner (luminal) surface of the conduit comprises pits having a depth of 1-4?m. Suitably, the conduit may also include poly-lactic acid (PLA). The inner surface of the conduit may have been treated with an alkaline composition. The present invention also provides a method for treating a peripheral nerve damage using a peripheral nerve growth conduit including poly-?-caprolactone (PCL). The present invention also provides a kit for treating a peripheral nerve damage having a peripheral nerve growth conduit including poly-?-caprolactone (PCL).
    Type: Grant
    Filed: October 16, 2015
    Date of Patent: September 17, 2019
    Assignee: THE UNIVERSITY OF MANCHESTER
    Inventors: Sandra Downes, Giorgio Terenghi, Mingzhu Sun, Paul Kingham
  • Patent number: 9770529
    Abstract: The present invention provides a tissue repair scaffold comprising a secondary fiber bundle, the secondary fiber bundle comprising a plurality of primary fiber bundles, each primary fiber bundle comprising a plurality of fibers, wherein the fibers comprise a biocompatible polymer. In embodiments the biocompatible polymer is polycaprolactone (PCL) (also known as poly-?-caprolactone) and the average diameter of the fibers is less than 1 ?m. The scaffold is particularly adapted for tendon repair. In vivo mouse studies demonstrate that tendon repair can be achieved with normal ambulation returning after 24-48 hours. The scaffolds were easy to handle during surgery, being non-slippery and easy to suture in place.
    Type: Grant
    Filed: June 13, 2011
    Date of Patent: September 26, 2017
    Assignee: The University of Manchester
    Inventors: Sandra Downes, Lucy Ann Bosworth
  • Publication number: 20170021055
    Abstract: The present invention provides a peripheral nerve growth scaffold including poly-?-caprolactone (PCL) wherein a surface of the scaffold comprises pits (blind holes) and microgrooves, the pits covering at least 5% of the surface. In embodiments, the surface has microgrooves having an average width in the range 15-20 ?m, an average depth of about 5 ?m, and an average spacing in the range 3-6 ?m, and pits having an average area in the range 1.1-1.5 (?m)2 with 20-26% coverage.
    Type: Application
    Filed: December 23, 2014
    Publication date: January 26, 2017
    Inventors: Sandra Downes, Giorgio Terenghi, Seyedeh Atefeh Mobasseri
  • Publication number: 20160082149
    Abstract: The present invention provides a peripheral nerve growth conduit for peripheral nerve repair, in particular conduits through which peripheral nerves can grow. The conduit includes poly-?-caprolactone (PCL). Preferably, the inner (luminal) surface of the conduit comprises pits having a depth of 1-4 ?m. Suitably, the conduit may also include poly-lactic acid (PLA). The inner surface of the conduit may have been treated with an alkaline composition. The present invention also provides a method for treating a peripheral nerve damage using a peripheral nerve growth conduit including poly-?-caprolactone (PCL). The present invention also provides a kit for treating a peripheral nerve damage having a peripheral nerve growth conduit including poly-?-caprolactone (PCL).
    Type: Application
    Filed: October 16, 2015
    Publication date: March 24, 2016
    Inventors: Sandra Downes, Giorgio Terenghi, Mingzhu Sun, Paul Kingham
  • Publication number: 20140248233
    Abstract: An injectable composite material comprising a fibrous material comprised of a fir biocompatible low melting point polyester dispersed in a host medium comprised of second biocompatible low melting point polyester.
    Type: Application
    Filed: February 8, 2012
    Publication date: September 4, 2014
    Applicant: The University of Manchester
    Inventors: Sandra Downes, Anita Kaur Bassi, Mohsen Zakikhani
  • Publication number: 20130184724
    Abstract: The present invention provides a peripheral nerve growth scaffold including poly ?-caprolactone (PCL) and microgrooves on an inner surface of the scaffold, the scaffold being adapted for use in treatment of damaged peripheral nerves. The microgrooves are suitably arranged as a pattern or array and preferably comprise sloping side walls, which arrangement has been found to provide a favourably environment for nerve and Schwann cell growth and proliferation. Experimental results demonstrate directed and aligned growth, which suitably reduces the rate of formation of neuromas. Embodiments comprising a PCL-PLA blend of the sloping side wall and a groove width greater than the spacing between adjacent grooves has been found to be particularly effective for directed cell growth and proliferation.
    Type: Application
    Filed: September 16, 2011
    Publication date: July 18, 2013
    Applicant: THE UNIVERSITY OF MANCHESTER
    Inventors: Sandra Downes, Mingzhu Sun, Seyedeh Atefeh Mobasseri, Giorgio Terenghi
  • Publication number: 20130071464
    Abstract: A fibrous tissue scaffold wherein fibres of the scaffold comprise a phosphonic acid polymer. The fibres preferably incorporate a vinylphosphonic acid—acrylic acid copolymer, and may further include polycaprolactone. There is further described medical implant coating comprising a phosphonic acid polymer, a biocompatible fibre comprising a phosphonic acid polymer and a biocompatible polymer comprising polycaprolactone and a phosphonic acid polymer.
    Type: Application
    Filed: August 6, 2010
    Publication date: March 21, 2013
    Applicant: THE UNIVERSITY OF MANCHESTER
    Inventors: Sandra Downes, Moshen Zakikhani, Anita Kaur Bassi, Julie Elizabeth Gough
  • Publication number: 20110245852
    Abstract: The present invention provides a peripheral nerve growth conduit for peripheral nerve repair, in particular conduits through which peripheral nerves can grow. The conduit includes poly-?-caprolactone (PCL). Preferably, the inner (luminal) surface of the conduit comprises pits having a depth of 1-4 ?m. Suitably, the conduit may also include poly-lactic acid (PLA). The inner surface of the conduit may have been treated with an alkaline composition. The present invention also provides a method for treating a peripheral nerve damage using a peripheral nerve growth conduit including poly-?-caprolactone (PCL). The present invention also provides a kit for treating a peripheral nerve damage having a peripheral nerve growth conduit including poly-?-caprolactone (PCL).
    Type: Application
    Filed: March 4, 2011
    Publication date: October 6, 2011
    Inventors: Sandra Downes, Giorgio Terenghi, Mingzhu Sun, Paul Kingham
  • Publication number: 20110238178
    Abstract: The present invention provides a tissue repair scaffold comprising a secondary fibre bundle, the secondary fibre bundle comprising a plurality of primary fibre bundles, each primary fibre bundle comprising a plurality of fibres, wherein the fibres comprise a biocompatible polymer. In embodiments the biocompatible polymer is polycaprolactone (PCL) (also known as poly-?-caprolactone) and the average diameter of the fibres is less than 1 ?m. The scaffold is particularly adapted for tendon repair. In vivo mouse studies demonstrate that tendon repair can be achieved with normal ambulation returning after 24-48 hours. The scaffolds were easy to handle during surgery, being non-slippery and easy to suture in place.
    Type: Application
    Filed: June 13, 2011
    Publication date: September 29, 2011
    Inventors: Sandra Downes, Lucy Ann Bosworth
  • Publication number: 20040054372
    Abstract: A fully biodegradable fibre reinforced composite adapted for use as a medical implant which is shaped and processed by means of a resin reaction injection transfer molding process adapted for predetermining shape, physical properties and degradation profile, shaped preform and/or composition for preparation of the shaped composite, process for the production of the shaped composite comprising obtaining a shaped preform and impregnating with resin with simultaneous processing thereof, shaped composite comprising thermoplastic matrix and fibres adapted for use as a medical implant, characterised by a differential degradation of matrix with respect to fibres adapted to degrade via an intermediate shaped structure comprising residual porous matrix or residual fibre form respectively and selection of composite is made for primary growth of a preferred cell type, throughout voids created by degraded matrix or fibre respectively, according to the desired healing or reconstruction locus, the shaped composites for use
    Type: Application
    Filed: July 24, 2003
    Publication date: March 18, 2004
    Applicant: BTG International Limited
    Inventors: Thomas Joseph Corden, Sandra Downes, Sheila Eunice Fisher, Ivor Arthur Jones, Christopher Douglas Rudd
  • Patent number: 5468787
    Abstract: A curable composition of a monomeric heterocyclic acrylic or methacrylic ester and an acrylate or methacrylate polymer is used to promote tissue repair, especially cartilage repair.
    Type: Grant
    Filed: June 16, 1994
    Date of Patent: November 21, 1995
    Inventors: Michael Braden, Sandra Downes, Mangala P. Patel, Kenneth W. M. Davy