Patents by Inventor Bernard Andreas
Bernard Andreas 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: 8177831Abstract: Apparatus and methods for stent delivery provide for dilatation at a treatment site as well as stent delivery, using the same stent delivery apparatus. Apparatus generally include a catheter having at least one expandable member, at least one stent positionable thereon, and a sheath disposed over the expandable member and the stent. Some embodiments include separate expandable members for dilatation of a lesion and for stent expansion, while other embodiments use the same expandable member for both. In some embodiments a stent includes multiple separable stent segments. In various embodiments, self-expanding stents may be used. Methods involve positioning a stent delivery device at a treatment site, expanding an expandable member to dilate at least a portion of a lesion at the treatment site, and expanding (or allowing to expand) a stent at the treatment site.Type: GrantFiled: February 7, 2008Date of Patent: May 15, 2012Assignee: Xtent, Inc.Inventor: Bernard Andreas
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Patent number: 8083788Abstract: Apparatus for delivering stents to body lumens include a flexible catheter shaft, an expandable member, a tubular prosthesis selectively movable in an axial direction over the expandable member, and a stop member disposed on the catheter shaft near the distal end of the catheter shaft for stopping the prosthesis at a deployment position on the expandable member. A variety of different stop members are provided according to various embodiments, such as stop members disposed outside the expandable member, stop members disposed inside the expandable member, movable stop members, and the like. Methods of delivering stents are also provided.Type: GrantFiled: November 28, 2006Date of Patent: December 27, 2011Assignee: Xtent, Inc.Inventors: Pablo Acosta, Bernard Andreas, Stephen Kao, Joe Karratt, Steve Landreville, Eric Lang, David Sanderson, Craig Welk, David W. Snow
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Patent number: 8080048Abstract: Apparatus and methods for delivering stents to bifurcated vessels involve delivering a first stent in a main branch of a vessel using a stent delivery catheter and delivering a second stent in a side branch of the vessel, without removing the stent delivery catheter from the patient. In various embodiments, multiple stents may be placed in either or both of the main and side branches. In some embodiments, stents in main and side branches are separate and do not touch, while in other embodiments a side branch stent may extend through a sidewall opening in a main branch stent. Stent length may optionally be adjusted in situ, and some embodiments provide for predilatation of one or more lesions.Type: GrantFiled: March 30, 2004Date of Patent: December 20, 2011Assignee: Xtent, Inc.Inventors: Bernard Andreas, Jeffry J. Grainger
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Patent number: 8070671Abstract: Devices and methods for augmenting or otherwise enhancing closure of body lumens comprise magnetic or magnetizable components or particles which are implanted in the wall of the lumen. The magnet fields exerted by the components or particles act to close the body lumen with a desired force.Type: GrantFiled: June 21, 2007Date of Patent: December 6, 2011Assignee: Torax Medical, Inc.Inventors: Mark E. Deem, Hanson S. Gifford, III, Bernard Andreas, Sunmi Chew, Ron French, Doug Sutton
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Patent number: 8070789Abstract: Apparatus for delivering stents to body lumens include one or more tubular prostheses carried at the distal end of a catheter shaft, a sheath slidably disposed over the prostheses, and a guidewire tube extending from within the sheath to the exterior of the sheath through an exit port in a sidewall thereof. A guidewire extends slidably through the guidewire tube. The sheath can be moved relative to the catheter shaft and the guidewire tube to expose the prostheses for deployment. Methods of delivering stents are also provided.Type: GrantFiled: March 28, 2008Date of Patent: December 6, 2011Assignee: Xtent, Inc.Inventors: Allan Will, Bernard Andreas, Sunmi Chew
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Patent number: 8070670Abstract: Devices and methods for augmenting or otherwise enhancing closure of body lumens comprise magnetic or magnetizable components or particles which are implanted in the wall of the lumen. The magnet fields exerted by the components or particles act to close the body lumen with a desired force.Type: GrantFiled: November 16, 2006Date of Patent: December 6, 2011Assignee: Torax Medical, Inc.Inventors: Mark E. Deem, Hanson S. Gifford, III, Bernard Andreas, Sunmi Chew, Ron French, Doug Sutton
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Patent number: 8016871Abstract: Blood vessels and other body lumens are stented using multiple, discreet stent structures. Stent structures may be balloon expandable or self-expanding and are delivered by a delivery catheter which is repositioned to spaced-apart delivery sights. By coating the stents with particular biologically active substances, hyperplasia within and between the implanted stents can be inhibited. An exemplary delivery catheter comprises a catheter body having both a pusher rod for advancing the stents relative to a sheath and a reciprocatable delivery catheter for implanting the stents.Type: GrantFiled: June 10, 2009Date of Patent: September 13, 2011Assignee: Xtent, Inc.Inventors: Sunmi Chew, Bernard Andreas, Hanson S. Gifford, III, Ron French, Mark E. Deem, Allan Will
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Patent number: 8016870Abstract: Blood vessels and other body lumens are stented using multiple, discrete stent structures, or continuous coiled or mesh stent structures. Stent structures may be a balloon expandable or self-expanding and are delivered by a delivery catheter which is repositioned to spaced-apart delivery sites. By coating the stents with particular biologically active substances, hyperplasia within and between the implanted stents can be inhibited. An exemplary delivery catheter comprises a catheter body having a deployment mechanism for deploying one or more stents of selectable length into the vessel.Type: GrantFiled: November 12, 2007Date of Patent: September 13, 2011Assignee: Xtent, Inc.Inventors: Sunmi Chew, Bernard Andreas, Hanson S. Gifford, III, Ron French, Mark E. Deem, Allan Will
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Publication number: 20110178589Abstract: Blood vessels and other body lumens are expanded using an evertible braided prosthesis. The braided prosthesis is delivered to the blood vessel in a radially collapsed configuration. A leading edge of the braided prosthesis is then everted so that it expands as it is advanced through the blood vessel. Optionally, the prosthesis can be provided with a biologically active substance in order to inhibit hyperplasia or have other desired biological effects.Type: ApplicationFiled: April 1, 2011Publication date: July 21, 2011Applicant: XTENT, INC.Inventors: Bernard Andreas, Ron French, Mark E. Deem, Hanson S. Gifford, III, Allan Will
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Publication number: 20110152996Abstract: Delivery catheters and systems are adapted for delivering multiple discreet prostheses in body lumens. An exemplary delivery catheter comprises a sheath, a pusher for moving the prostheses relative to the sheath, and a valve member for selectively retaining the prostheses in the sheath. For balloon expandable stents, an elongated shaft and an expandable member are slidably disposed in the sheath, and the prostheses are positionable on the expandable member for deployment in the body lumen. The valve member allows a selected number of prostheses to be deployed from the sheath while retaining other prostheses within the sheath.Type: ApplicationFiled: February 28, 2011Publication date: June 23, 2011Applicant: XTENT, INC.Inventors: Pablo Acosta, Bernard Andreas, Steve Landreville, David W. Snow
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Patent number: 7938852Abstract: Blood vessels and other body lumens are expanded using an evertible braided prosthesis. The braided prosthesis is delivered to the blood vessel in a radially collapsed configuration. A leading edge of the braided prosthesis is then everted so that it expands as it is advanced through the blood vessel. Optionally, the prosthesis can be provided with a biologically active substance in order to inhibit hyperplasia or have other desired biological effects.Type: GrantFiled: February 29, 2008Date of Patent: May 10, 2011Assignee: Xtent, Inc.Inventors: Bernard Andreas, Ron French, Mark E. Deem, Hanson S. Gifford, III, Allan Will
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Patent number: 7922755Abstract: Delivery catheters and systems are adapted for delivering multiple discreet prostheses in body lumens. An exemplary delivery catheter comprises a sheath, a pusher for moving the prostheses relative to the sheath, and a valve member for selectively retaining the prostheses in the sheath. For balloon expandable stents, an elongated shaft and an expandable member are slidably disposed in the sheath, and the prostheses are positionable on the expandable member for deployment in the body lumen. The valve member allows a selected number of prostheses to be deployed from the sheath while retaining other prostheses within the sheath.Type: GrantFiled: October 5, 2006Date of Patent: April 12, 2011Assignee: Xtent, Inc.Inventors: Pablo Acosta, Bernard Andreas, Steve Landreville, David W. Snow
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Patent number: 7918881Abstract: A stent deployment system includes a catheter shaft, an expandable member mounted to the catheter shaft, and one or more stents or stent segments slidably positioned on the expandable member. The stent deployment system is adapted for deployment of stents or stent segments in very long lesions and in tapered and curved vessels. The stent deployment system facilitates slidable movement of a stent in a distal direction relative to the expandable member while inhibiting slidable movement in a proximal direction relative to the expandable member.Type: GrantFiled: October 5, 2006Date of Patent: April 5, 2011Assignee: Xtent, Inc.Inventors: Bernard Andreas, David W. Snow, Jeffry J. Grainger
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Patent number: 7905913Abstract: Blood vessels and other body lumens are stented using multiple, discreet stent structures. Stent structures may be balloon expandable or self-expanding and are delivered by a delivery catheter which is repositioned to spaced-apart delivery sights. By coating the stents with particular biologically active substances, hyperplasia within and between the implanted stents can be inhibited. An exemplary delivery catheter comprises a catheter body having both a pusher rod for advancing the stents relative to a sheath and a reciprocatable delivery catheter for implanting the stents.Type: GrantFiled: November 28, 2006Date of Patent: March 15, 2011Assignee: Xtent, Inc.Inventors: Sunmi Chew, Bernard Andreas, Hanson S. Gifford, III, Ron French, Mark E. Deem, Allan Will
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Patent number: 7892274Abstract: Apparatus for delivering stents to body lumens include one or more tubular prostheses carried at the distal end of a catheter shaft, a sheath slidably disposed over the prostheses, and a guidewire tube extending from within the sheath to the exterior of the sheath through an exit port in a sidewall thereof. A guidewire extends slidably through the guidewire tube. The sheath can be moved relative to the catheter shaft and the guidewire tube to expose the prostheses for deployment. Methods of delivering stents are also provided.Type: GrantFiled: November 16, 2006Date of Patent: February 22, 2011Assignee: Xtent, Inc.Inventors: Allan Will, Bernard Andreas, Sunmi Chew
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Publication number: 20100004729Abstract: Blood vessels and other body lumens are stented using multiple, discreet stent structures. Stent structures may be balloon expandable or self-expanding and are delivered by a delivery catheter which is repositioned to spaced-apart delivery sights. By coating the stents with particular biologically active substances, hyperplasia within and between the implanted stents can be inhibited. An exemplary delivery catheter comprises a catheter body having both a pusher rod for advancing the stents relative to a sheath and a reciprocatable delivery catheter for implanting the stents.Type: ApplicationFiled: June 10, 2009Publication date: January 7, 2010Applicant: Xtent, Inc.Inventors: Sunmi Chew, Bernard Andreas, Hanson S. Gifford, III, Ron French, Mark E. Deem, Allan Will
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Publication number: 20090264979Abstract: Blood vessels and other body lumens are stented using stent structures comprising a plurality of radially expansible rings where at least some of the rings comprise axially extending elements which interleave with axially extending elements on adjacent unconnected rings. The ring structures may be open cell structures or closed cell structures, and the axially extending elements will typically be formed as part of the open cell or closed cell structure.Type: ApplicationFiled: June 26, 2009Publication date: October 22, 2009Applicant: Xtent, Inc.Inventors: Stephen Kao, Bernard Andreas, Hanson S. Gifford, III, Mark E. Deem, David W. Snow, Jeffry J. Grainger
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Patent number: 7553324Abstract: Stent delivery devices and methods include multiple stents or stent segments mounted at fixed positions on an expandable member of the stent delivery catheter. One or more of the fixed-position stents may be selectively deployed in a body lumen such as a blood vessel by positioning one or more sheaths to constrain some stents while exposing other for deployment. Some embodiments include two axially movable sheaths for serially deploying stents while containing a portion of the expandable balloon from which stents have been deployed. Other embodiments include inner and outer balloon shafts to allow the balloon to be retracted into the delivery catheter as stents are deployed. Devices and methods of the invention provide enhanced serial deployment of multiple stents or stent segments while reducing the risk of damage to an expandable deployment member.Type: GrantFiled: October 14, 2003Date of Patent: June 30, 2009Assignee: Xtent, Inc.Inventors: Bernard Andreas, Jeffry J. Grainger
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Publication number: 20090149863Abstract: Stent delivery devices and methods include multiple stents or stent segments mounted at fixed positions on an expandable member of the stent delivery catheter. One or more of the fixed-position stents may be selectively deployed in a body lumen such as a blood vessel by positioning one or more sheaths to constrain some stents while exposing others for deployment. Some embodiments include two axially movable sheaths for serially deploying stents while containing a portion of the expandable balloon from which stents have been deployed. Other embodiments include inner and outer balloon shafts to allow the balloon to be retracted into the delivery catheter as stents are deployed. Devices and methods of the invention provide enhanced serial deployment of multiple stents or stent segments while reducing the risk of damage to an expandable deployment member.Type: ApplicationFiled: February 18, 2009Publication date: June 11, 2009Applicant: Xtent, Inc.Inventors: Bernard Andreas, Jeffry J. Grainger
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Publication number: 20090088832Abstract: Blood vessels and other body lumens are stented using multiple, discrete stent structures, or continuous coiled or mesh stent structures. Stent structures may be a balloon expandable or self-expanding and are delivered by a delivery catheter which is repositioned to spaced-apart delivery sites. By coating the stents with particular biologically active substances, hyperplasia within and between the implanted stents can be inhibited. An exemplary delivery catheter comprises a catheter body having a deployment mechanism for deploying one or more stents of selectable length into the vessel.Type: ApplicationFiled: November 12, 2007Publication date: April 2, 2009Applicant: XTENT, INC.Inventors: Sunmi Chew, Bernard Andreas, Hanson S. Gifford, III, Ron French, Mark E. Deem, Allan Will