Patents by Inventor James D. Silverman
James D. Silverman 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: 8801774Abstract: An improved tubular structure adapted to increase in diameter upon application of axial force is provided. Increase in diameter is achieved by constructing the tube from multiple layers of material that move relative to each other during axial elongation of the tube. The tube of the present invention can be used both to avoid problems in “necking” found in many prior tube devices, and to provide additional benefits that increases in diameter of the tube during axial elongation can provide. As such, the tube of the present invention may be useful as a manufacturing aid, as a deployment sheath (for example, to deliver medical devices), and in other applications that may benefit from easier tubular sheath removal.Type: GrantFiled: April 18, 2013Date of Patent: August 12, 2014Assignee: W. L. Gore & Assoicates, Inc.Inventor: James D. Silverman
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Patent number: 8764816Abstract: A stent delivery and deployment system for use primarily with self-expanding stents, incorporating a traction tube extending over the length of the diametrically compacted and constrained stent and everting back over itself, with the outer everted portion of the traction tube preferably extending to the proximal end of the delivery system. A constraining sleeve is provided between the inner, non-everted portion and outer, everted portion of the traction tube, the constraining sheath extending over the length of the constrained stent prior to deployment and diametrically constraining the diametrically compacted self-expanding stent. The application of tension to the proximal end of the traction tube causes the constraining sheath to move in a proximal direction, freeing the constrained stent as it moves and allowing the stent to deploy against the wall of the body conduit within which it is located during the deployment process.Type: GrantFiled: May 7, 2007Date of Patent: July 1, 2014Assignee: W. L. Gore & Associates, Inc.Inventors: Alexander K. Koss, James D. Silverman
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Publication number: 20130296877Abstract: A deployment sheath for medical devices is provided that includes one or more pleats in its pre-deployment state that are allowed to open during deployment so as to facilitate easier device deployment and sheath removal. Preferably, the sheath is removed by everting it over itself during the delivery process. By orienting the pleats along the length of the sheath, preferably helically around the sheath, the sheath undergoes a predictable enlargement during deployment so as to relieve friction of the everted sheath sliding along itself during deployment. This allows the sheath to be removed with less tension than previous everting sheath constructions and assures more accurate device placement in a patient.Type: ApplicationFiled: March 15, 2013Publication date: November 7, 2013Inventors: Craig W. Irwin, James D. Silverman
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Publication number: 20130238080Abstract: An improved tubular structure adapted to increase in diameter upon application of axial force is provided. Increase in diameter is achieved by constructing the tube from multiple layers of material that move relative to each other during axial elongation of the tube. The tube of the present invention can be used both to avoid problems in “necking” found in many prior tube devices, and to provide additional benefits that increases in diameter of the tube during axial elongation can provide. As such, the tube of the present invention may be useful as a manufacturing aid, as a deployment sheath (for example, to deliver medical devices), and in other applications that may benefit from easier tubular sheath removal.Type: ApplicationFiled: April 18, 2013Publication date: September 12, 2013Applicant: W. L. Gore & Associates, Inc.Inventor: James D. Silverman
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Publication number: 20130204345Abstract: The present disclosure comprises devices, systems, and methods having an inverted sheath configured to cover, and in some instances constrain, a medical device and to retract through eversion, thus enabling the deployment of medical device at the treatment site. A constraining sheath can evert hydraulically. A constraining sheath can be configured to neck down a medical device to achieve a lower delivery profile. Furthermore, a constraining sheath can comprise a balloon to expand or positionally or structurally adjust a medical device.Type: ApplicationFiled: August 9, 2012Publication date: August 8, 2013Inventors: Edward H. Cully, Craig W. Irwin, James D. Silverman
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Patent number: 8435282Abstract: An improved tubular structure adapted to increase in diameter upon application of axial force is provided. Increase in diameter is achieved by constructing the tube from multiple layers of material that move relative to each other during axial elongation of the tube. The tube of the present invention can be used both to avoid problems in “necking” found in many prior tube devices, and to provide additional benefits that increases in diameter of the tube during axial elongation can provide. As such, the tube of the present invention may be useful as a manufacturing aid, as a deployment sheath (for example, to deliver medical devices), and in other applications that may benefit from easier tubular sheath removal.Type: GrantFiled: July 15, 2009Date of Patent: May 7, 2013Assignee: W. L. Gore & Associates, Inc.Inventor: James D. Silverman
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Publication number: 20120109283Abstract: A stent incorporating flexible, preferably polymeric, connecting elements into the stent wherein these elements connect adjacent, spaced-apart stent elements. Preferably the spaced-apart adjacent stent elements are the result of forming the stent from a helically wound serpentine wire having space provided between adjacent windings. Other stent forms such as multiple, individual spaced-apart ring-shaped or interconnected stent elements may also be used. The connecting elements are typically web-shaped and result from creating slits or apertures in a covering of graft material applied to the stent and then, for example, applying heat to cause the slits or apertures to enlarge. The remaining graft material forms the interconnecting webs between the adjacent stent elements.Type: ApplicationFiled: January 12, 2012Publication date: May 3, 2012Inventors: Dustin C. Burkart, Edward H. Cully, Jeffrey B. Duncan, Cody L. Hartman, James D. Silverman
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Publication number: 20110166637Abstract: The current invention comprises tubes that can be constrained and expanded by either axial or torsional strain. By torsionally displacing the tube in a direction counter to the biased helices and angularly displacing the lower angle helix to an angle equal to, but opposite, the starting angle, the tube is expanded diametrically with no significant change in length after expansion of the tube. These tubes find utility in medical and non medical applications.Type: ApplicationFiled: January 19, 2011Publication date: July 7, 2011Inventors: Craig W. Irwin, James D. Silverman
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Publication number: 20110015716Abstract: An improved tubular structure adapted to increase in diameter upon application of axial force is provided. Increase in diameter is achieved by constructing the tube from multiple layers of material that move relative to each other during axial elongation of the tube. The tube of the present invention can be used both to avoid problems in “necking” found in many prior tube devices, and to provide additional benefits that increases in diameter of the tube during axial elongation can provide. As such, the tube of the present invention may be useful as a manufacturing aid, as a deployment sheath (for example, to deliver medical devices), and in other applications that may benefit from easier tubular sheath removal.Type: ApplicationFiled: July 15, 2009Publication date: January 20, 2011Inventor: JAMES D. SILVERMAN
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Publication number: 20090182413Abstract: A stent incorporating flexible, preferably polymeric, connecting elements into the stent wherein these elements connect adjacent, spaced-apart stent elements. Preferably the spaced-apart adjacent stent elements are the result of forming the stent from a helically wound serpentine wire having space provided between adjacent windings. Other stent forms such as multiple, individual spaced-apart ring-shaped or interconnected stent elements may also be used. The connecting elements are typically web-shaped and result from creating slits or apertures in a covering of graft material applied to the stent and then, for example, applying heat to cause the slits or apertures to enlarge. The remaining graft material forms the interconnecting webs between the adjacent stent elements.Type: ApplicationFiled: January 8, 2009Publication date: July 16, 2009Inventors: Dustin C. Burkart, Edward H. Cully, Jeffrey B. Duncan, Cody L. Hartman, James D. Silverman
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Publication number: 20090182411Abstract: A deployment sheath for medical devices is provided that includes one or more pleats in its pre-deployment state that are allowed to open during deployment so as to facilitate easier device deployment and sheath removal. Preferably, the sheath is removed by everting it over itself during the delivery process. By orienting the pleats along the length of the sheath, preferably helically around the sheath, the sheath undergoes a predictable enlargement during deployment so as to relieve friction of the everted sheath sliding along itself during deployment. This allows the sheath to be removed with less tension than previous everting sheath constructions and assures more accurate device placement in a patient.Type: ApplicationFiled: January 15, 2008Publication date: July 16, 2009Inventors: Craig W. Irwin, James D. Silverman
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Publication number: 20080281398Abstract: A stent delivery and deployment system for use primarily with self-expanding stents, incorporating a traction tube extending over the length of the diametrically compacted and constrained stent and everting back over itself, with the outer everted portion of the traction tube preferably extending to the proximal end of the delivery system. A constraining sleeve is provided between the inner, non-everted portion and outer, everted portion of the traction tube, the constraining sheath extending over the length of the constrained stent prior to deployment and diametrically constraining the diametrically compacted self-expanding stent. The application of tension to the proximal end of the traction tube causes the constraining sheath to move in a proximal direction, freeing the constrained stent as it moves and allowing the stent to deploy against the wall of the body conduit within which it is located during the deployment process.Type: ApplicationFiled: May 7, 2007Publication date: November 13, 2008Inventors: Alexander K. Koss, James D. Silverman
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Publication number: 20080119943Abstract: An open stent (a stent having open space through its thickness at locations between the ends of the stent), incorporating flexible, preferably polymeric, connecting elements into the stent wherein these elements connect adjacent, spaced-apart stent elements. Preferably the spaced-apart adjacent stent elements are the result of forming the stent from a helically wound serpentine wire having space provided between adjacent windings. Other stent forms such as multiple, individual spaced-apart ring-shaped or interconnected stent elements may also be used. The connecting elements are preferably longitudinally oriented.Type: ApplicationFiled: November 16, 2006Publication date: May 22, 2008Inventors: Joseph R. Armstrong, Edward H. Cully, Mark Y. Hansen, Brian L. Johnson, Bret J. Kilgrow, Larry J. Kovach, James D. Silverman
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Patent number: 5464422Abstract: A suture needle having, in sequence, a shaft portion, a tip portion, a conical point portion and a point. The shaft portion may be straight or curved, and cylindrical or tapered. The tip portion has at least two substantially flat surfaces. The conical point portion is of conical shape having a substantially round cross section adjacent to the point of the needle. A plane tangent to the surface of the conical point portion makes a greater angle with respect to the longitudinal centerline of the needle than does the angle formed by the intersection of a plane through a flat surface of the tip portion and the longitudinal centerline of the needle.Type: GrantFiled: January 11, 1995Date of Patent: November 7, 1995Assignee: W. L. Gore & Associates, Inc.Inventor: James D. Silverman
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Patent number: 5086914Abstract: A suture package comprising a housing surrounding a cavity and having a port through some portion of the housing, wherein said cavity contains a length of suture in a configuration sequentially ordered along the suture withdrawal path but otherwise random. In a preferred embodiment the cavity has a vent through a portion of the housing to allow the use of a gaseous flow to aid in the loading of the length of suture into the cavity. A method of suture packaging is also described.Type: GrantFiled: May 14, 1990Date of Patent: February 11, 1992Assignee: W. L. Gore & Associates, Inc.Inventors: Stanley L. Mish, James D. Silverman