Patents by Inventor Ann Prewett
Ann Prewett 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: 9814496Abstract: A swellable, resilient self-retaining interspinous implant that includes two oppositely disposed retaining members connected by a centrally disposed cross body, the cross body defining a center axis, each retaining member extending in opposite directions relative to each other and perpendicular to the center axis, the implant being dimensioned and configured to fit between two spinous processes of two adjacent vertebrae. In embodiments, the implant has a first configuration of reduced size such that it can be inserted into the patient in a minimally invasive manner. Once inserted to an application point within the patient, the implant expands in size to dynamically maintain the adjacent spinous processes in beneficial alignment. Also provided is a method of making a swellable, resilient interspinous implant as described herein.Type: GrantFiled: September 15, 2015Date of Patent: November 14, 2017Inventor: Ann Prewett
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Publication number: 20170071638Abstract: A swellable, resilient self-retaining interspinous implant that includes two oppositely disposed retaining members connected by a centrally disposed cross body, the cross body defining a center axis, each retaining member extending in opposite directions relative to each other and perpendicular to the center axis, the implant being dimensioned and configured to fit between two spinous processes of two adjacent vertebrae. In embodiments, the implant has a first configuration of reduced size such that it can be inserted into the patient in a minimally invasive manner. Once inserted to an application point within the patient, the implant expands in size to dynamically maintain the adjacent spinous processes in beneficial alignment. Also provided is a method of making a swellable, resilient interspinous implant as described herein.Type: ApplicationFiled: September 15, 2015Publication date: March 16, 2017Inventor: Ann PREWETT
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Patent number: 9131965Abstract: A swellable, resilient interspinous implant is provided that includes a swellable polymeric medium, said polymeric medium being dispersed throughout the implant, the implant being dimensioned and configured to fit between two spinous processes of two adjacent vertebrae and buttress the space between the two adjacent vertebrae. In embodiments, the implant has a first configuration of reduced size such that it can be inserted into the patient in a minimally invasive manner. Once inserted to an application point within the patient, the implant expands in size to dynamically maintain the adjacent spinous processes in beneficial alignment. Also provided is a method of making a swellable, resilient interspinous implant as described herein. Also provided is a method of treating a degenerative condition of a spine which includes creating an incision and inserting, through the incision, between two spinous processes of two adjacent vertebrae, a swellable, resilient interspinous implant as described herein.Type: GrantFiled: October 15, 2009Date of Patent: September 15, 2015Assignees: REPLICATION MEDICAL INC., HYDRA MEDICAL LLCInventors: Ann Prewett, Alan Chen, Frederick H. Hardenbrook
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Publication number: 20130282121Abstract: A spinal facet joint implant suitable for minimally invasive implantation and capable of transitioning from a compact first configuration to an expanded second configuration is made of a swellable and compressible fluid absorbing polymer. The implant is dimensioned and configured, while in the first configuration, to fit within the lumen of a surgical needle. In the expanded, second configuration, the implant exerts pressure within the facet joint which helps keep the facet joint from collapsing and anchors the implant in place. A spinal facet joint implant herein may also be dimensioned and configured to occupy a portion of the capsule of a facet joint. A spinal facet joint implant for treating inflammation made from a fluid absorbing polymer absorbs and sequesters inflammatory agents as it absorbs synovial fluid in situ. Methods of making and implanting a spinal facet implant are provided.Type: ApplicationFiled: March 22, 2013Publication date: October 24, 2013Inventor: Ann Prewett
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Publication number: 20100331987Abstract: A radially compressed xerogel spinal nucleus implant is manufactured and utilized for implantation into an intervertebral disc space. The implant has an optimized cross-sectional ellipsoid configuration which facilitates insertion of the implant through a minimal incision in the annulus. Radial compression is achieved by exerting substantially equilateral circumferential compression on an object contained within a radially collapsible member for exerting substantially equilateral circumferential compression on the object. Radial compression may also be achieved by exerting substantially equilateral circumferential compression force on a spinal nucleus implant via gas pressure in a sealed chamber.Type: ApplicationFiled: September 2, 2010Publication date: December 30, 2010Applicant: REPLICATION MEDICAL INC.Inventors: Gerald Gontarz, Ann Prewett
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Patent number: 7806934Abstract: A radially compressed xerogel spinal nucleus implant is manufactured and utilized for implantation into an intervertebral disc space. The implant has an optimized cross-sectional ellipsoid configuration which facilitates insertion of the implant through a minimal incision in the annulus. Radial compression is achieved by exerting substantially equilateral circumferential compression on an object contained within a radially collapsible member for exerting substantially equilateral circumferential compression on the object. Radial compression may also be achieved by exerting substantially equilateral circumferential compression force on a spinal nucleus implant via gas pressure in a sealed chamber.Type: GrantFiled: December 16, 2005Date of Patent: October 5, 2010Assignee: Replication Medical Inc.Inventors: Gerald Gontarz, Ann Prewett
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Publication number: 20100222881Abstract: The present disclosure relates to a vessel/tissue protection device having a polymer coated reinforcing layer. The polymer can comprise a biocompatible polymer that will not promote tissue in-growth or attachment, such as segmented polyurethane, polycarbonate urethane, polyether urethane, polyacrylonitrile, etc. The reinforcing layer can comprise any suitable woven, non-woven, knitted, or braided reinforcing polymer, fabric, or foil that is biocompatible and capable of holding a suture, staple, or other attachment device.Type: ApplicationFiled: October 5, 2009Publication date: September 2, 2010Inventors: Ann Prewett, Mark Dingledine, Alan C. Chen
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Publication number: 20100100183Abstract: A swellable, resilient interspinous implant is provided that includes a swellable polymeric medium, said polymeric medium being dispersed throughout the implant, the implant being dimensioned and configured to fit between two spinous processes of two adjacent vertebrae and buttress the space between the two adjacent vertebrae. In embodiments, the implant has a first configuration of reduced size such that it can be inserted into the patient in a minimally invasive manner. Once inserted to an application point within the patient, the implant expands in size to dynamically maintain the adjacent spinous processes in beneficial alignment. Also provided is a method of making a swellable, resilient interspinous implant as described herein. Also provided is a method of treating a degenerative condition of a spine which includes creating an incision and inserting, through the incision, between two spinous processes of two adjacent vertebrae, a swellable, resilient interspinous implant as described herein.Type: ApplicationFiled: October 15, 2009Publication date: April 22, 2010Inventors: Ann Prewett, Alan Chen, Frederick H. Hardenbrook
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Publication number: 20090149958Abstract: A spinal nucleus implant is provided which includes a braided three-dimensional reinforcement member having a polymeric matrix imbued therein, the implant configured to have a shape consistent with a cavity within an intervertebral disc space. The polymeric matrix may be a fluid absorbing polymer, e.g., a hydrogel or a substantially non-fluid absorbing in-situ curable elastic polymer. A method of making a spinal nucleus implant is provided which includes providing a braided three-dimensional reinforcement member configured and dimensioned to have a shape consistent with a cavity in an intervertebral space and infusing the braided three-dimensional reinforcement member with a liquid polymer capable of forming a polymeric matrix. Also provided is a spinal nucleus implant including a three-dimensional reinforcement member adapted and configured to undergo anisotropic expansion, the implant configured to have a shape consistent with a cavity within an intervertebral disc space.Type: ApplicationFiled: November 3, 2008Publication date: June 11, 2009Inventors: Ann Prewett, Gerald Gontarz
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Publication number: 20070191956Abstract: A spinal nucleus implant is provided which includes an implant body and an interiorly embedded support member which extends out from the implant body. In one embodiment, the support member is fabric selected from the group consisting of mesh, woven fabric and nonwoven fabric. In one embodiment, the support member includes at least one portion which is located outside of the body, said portion adapted to engage one or more guides for orienting the implant. In one embodiment, the implant is capable of expanding from a compact, substantially dehydrated configuration to an expanded hydrated configuration. A method of manufacturing a spinal nucleus implant is provided which includes coagulating a liquid polymer such that at least a portion of said support member extends beyond the perimeter of the polymer to form a spinal nucleus implant having an interiorly disposed support member which extends out of the polymer. A method of implanting such a spinal nucleus implant is provided.Type: ApplicationFiled: January 24, 2007Publication date: August 16, 2007Inventors: Ann Prewett, Gerald Gontarz
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Publication number: 20060136065Abstract: A radially compressed xerogel spinal nucleus implant is manufactured and utilized for implantation into an intervertebral disc space. The implant has an optimized cross-sectional ellipsoid configuration which facilitates insertion of the implant through a minimal incision in the annulus. Radial compression is achieved by exerting substantially equilateral circumferential compression on an object contained within a radially collapsible member for exerting substantially equilateral circumferential compression on the object. Radial compression may also be achieved by exerting substantially equilateral circumferential compression force on a spinal nucleus implant via gas pressure in a sealed chamber.Type: ApplicationFiled: December 16, 2005Publication date: June 22, 2006Inventors: Gerald Gontarz, Ann Prewett
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Patent number: 5118512Abstract: A process for cryopreserving a biological material which comprises contacting the biological material with both an effective amount at least one cryopreservation agent, and an agent to increase diffusion of the cryopreservation agent into the biological material, such as a surfactant or a permeation enhancer.Type: GrantFiled: January 23, 1990Date of Patent: June 2, 1992Assignee: Osteotech, Inc. (a Delaware Corp.)Inventors: Robert K. O'Leary, Ann Prewett