Craig Bonsignore - San Jose CA, US David J. Wilson - Branchburg NJ, US
Assignee:
Cordis Corporation - Miami Lakes FL
International Classification:
A61F 2/06
US Classification:
623 119, 623 115
Abstract:
A stent or other intraluminal medical device may be constructed utilizing a series of split-bridges interposed between a series of fixed bridges to reduce the likelihood of deformation during stent loading and stent deployment without sacrificing overall stent flexibility. The stent comprises a plurality of hoops interconnected by a plurality of fixed bridges. The stent also comprises a plurality of split-bridges, which only make contact when the stent is subjected to compressive axial loading. The stent may also comprise markers formed from housings integral with the stent and marker inserts having a higher radiopacity than the stent. This design provides for more precise placement and post-procedural visualization in a vessel, by increasing the radiopacity of the stent under X-ray fluoroscopy. The housings are formed integral to the stent and the marker inserts are made from a material close in the galvanic series to the stent material and sized to substantially minimize the effect of galvanic corrosion. The housings are also shaped to minimize their impact on the overall profile of the stent.
A stent or other intraluminal medical device may be constructed utilizing a series of anvil bridges interposed between a series of fixed bridges to reduce the likelihood of deformation during stent loading and stent deployment without sacrificing overall stent flexibility. The stent comprises a plurality of hoops interconnected by a plurality of fixed bridges. The stent also comprises a plurality of anvil bridges, which transmit forces only when the stent is subjected to compressive axial loading. The stent may also comprise markers formed from housings integral with the stent and marker inserts having a higher radiopacity than the stent. This design provides for more precise placement and post-procedural visualization in a vessel, by increasing the radiopacity of the stent under X-ray fluoroscopy. The housings are formed integral to the stent and the marker inserts are made from a material close in the galvanic series to the stent material and sized to substantially minimize the effect of galvanic corrosion. The housings are also shaped to minimize their impact on the overall profile of the stent.
Method For Preparing And Employing An Implant Delivery Apparatus
Clifford Dwyer - Weston FL, US Craig Bonsignore - Pleasanton CA, US
Assignee:
Cordis Corporation - Miami Lakes
International Classification:
A61F 2/06
US Classification:
623 111
Abstract:
A method for pre-loading an implant delivery apparatus and for delivering an implant is provided. An implant is mounted within the distal end of an elongated section of a delivery apparatus. After the implant is mounted within the elongated section, fluid is drawn into a chamber within the delivery apparatus that is proximal to the implant. This is accomplished by drawing fluid, such as a biocompatible liquid, into the chamber by applying pressure to a port. The fluid is trapped inside the chamber forming a liquid column. The elongated section is advanced through a lumen or passageway delivering the implant to a desired location. A shaft, which is in communication with the fluid column, is held stationary and the elongated section retracted deploying the implant. As the elongated section is retracted, the implant exerts forces upon the elongated section that are transmitted to the fluid column which resists buckling.
Clifford Dwyer - Weston FL, US Craig Bonsignore - Pleasanton CA, US
Assignee:
Cordis Corporation - Miami Lakes FL
International Classification:
A61F 2/06
US Classification:
623 111
Abstract:
An apparatus for delivering an implant within a lumen or passageway is provided. The apparatus comprises a flexible, hollow outer member having an elongated section that is inserted into and navigated through the lumen of passageway. The implant is mounted within the distal end of the elongated section. An elongated fluid chamber is defined within the outer member between two valves or seals. The valves or seals permit fluid flow in a pre-determined direction during loading of fluid into the chamber, but prevent fluid to exit the chamber during deployment of the implant. A shaft is in contact with the proximal end of the fluid column. During deployment, the shaft is held in a fixed position and the outer member actuated in a proximal direction. The implant exerts compressive forces on the outer member as it is actuated proximally. These forces are transmitted to the fluid column which resists buckling.
Eric Schmid - San Diego CA, US Andrew Morris - San Diego CA, US Keith Weier - San Diego CA, US Craig Bonsignore - Pleasanton CA, US Keith Esser - San Diego CA, US Steven C. Howard - San Diego CA, US Joseph A. DiPari - La Mesa CA, US
Assignee:
REVA Medical, Inc. - San Diego CA
International Classification:
A61F 2/06
US Classification:
623 122, 623 115
Abstract:
An expandable slide and lock stent is provided that comprises a plurality of radial elements interconnected to form a tubular member. Each radial element can comprise a helical backbone and at least one elongate member extending from the helical backbone in a circumferential direction. Each backbone can have at least one slot that can be configured to receive an elongate member of an adjacent radial element.
A plurality of endoluminal segments axially connected by fiber bridges is disclosed. The endoluminal segments may either be balloon-expandable or self-expanding, with the preferred embodiment being superelastic nitinol. The intraluminal segments may possess a textured surface or at least one geometric feature per segment, preferably located at the apex of a strut pair comprising the intraluminal segment, preferably capable of serving as an anchoring point for the fiber bridges. These geometric features may transmit axially compressive loads during deployment from a device such as a catheter, and may further be capable of interlocking the endoluminal segments when constrained within a device such as a catheter. The fibers comprising the bridges may be polymeric, silk, collagen, bioabsorbable, or a blend thereof. The fiber network comprising the bridges may be regularly oriented, randomly oriented, localized, or continuous.
In accordance with the present invention, there is provided a stent for insertion into a vessel of a patient. The stent has a front and back open ends and a longitudinal axis extending therebetween. The stent has a plurality of adjacent hoops that are held in alignment with the longitudinal axis between the front and back open ends by a thin film tube. The hoops are attached to either the inner or outer surface of the thin film tube. The stent is compressed into a first smaller diameter for insertion into the vessel with a delivery tube and a second larger diameter for deployment into the vessel. The inventive stent can be retracted into the delivery tube if it is improperly deployed.
In accordance with the present invention, there is provided a stent for insertion into a vessel of a patient and a method for manufacturing the same. The stent has front and back open ends and a longitudinal axis extending therebetween. The stent has a plurality of adjacent hoops that are held in alignment with the longitudinal axis between the front and back open ends by a thin film tube. The hoops are attached to either the inner or outer surface of the thin film tube. The stent is compressed into a first smaller diameter for insertion into the vessel with a delivery tube and a second larger diameter for deployment into the vessel. The inventive stent can be retracted into the delivery tube if it is improperly deployed.
Nitinol Devices & Components, Inc.
Vice President Applied Technologies
Nitinol Devices & Components, Inc.
Vice President Technical Services
Nitinol Devices & Components, Inc.
Director of Technical Services
Nitinol Devices & Components, Inc.
Director of Medical Device Design
Proximal Design Sep 2007 - Jun 2008
Principal
Education:
University of California, Berkeley, Haas School of Business 2004 - 2007
Master of Business Administration, Masters
Bucknell University 1991 - 1995
Bachelors, Bachelor of Science, Mechanical Engineering
Skills:
Medical Devices Product Development Design Control Finite Element Analysis R&D Fda Engineering Iso 13485 Design of Experiments Biomedical Engineering Commercialization Strategy Biomechanics Program Management Process Simulation Solidworks V&V Business Planning
Certifications:
Edx Verified Certificate For Embedded Systems - Shape the World