Patents Examined by Jonathan R Stroud
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Patent number: 8182527Abstract: Medical devices, and in particular implantable medical devices, may be coated to minimize or substantially eliminate a biological organism's reaction to the introduction of the medical device to the organism. The medical devices may be coated with any number of biocompatible materials. Therapeutic drugs, agents or compounds may be mixed with the biocompatible materials and affixed to at least a portion of the medical device. In addition, various polymer combinations as well as other therapeutic agents may be utilized to control the elution rates of the therapeutic drugs, agents and/or compounds from the implantable medical devices.Type: GrantFiled: June 21, 2004Date of Patent: May 22, 2012Inventors: Gerard H. Llanos, Pallassana V. Narayanan, George Papandreou
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Patent number: 8163010Abstract: A medical device for treating a heart valve may include a master staple and a loop fixed to the master staple prior to deployment of the master staple. The heart valve may be treated with that master staple and loop, and a plurality of follower staples that are independent from the loop prior to deployment of the master staple, by closing the master staple into the valve annulus, such that the point of the loop that is fixed to the master staple is fixed relative to the valve annulus, and engaging the loop with a plurality of follower staples after that closing.Type: GrantFiled: June 3, 2008Date of Patent: April 24, 2012Assignee: Cardica, Inc.Inventors: Bernard A. Hausen, Bryan D. Knodel, Luke W. Clauson
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Patent number: 8157810Abstract: A expandable prosthesis having an imageable structure comprising one or more elements visually distinguishable by an external (e.g., radiographic or ultrasonic) imaging system, the structure being located about a first axis that corresponds to a structural feature of the prosthesis that is configured to perform a specific function particular to that axis. The imageable structure is configured to assist in the rotational orientation of the prosthesis during placement within the implantation site. In one embodiment, the prosthesis comprises a venous valve that includes imageable elements or structure, such as a pair of radiopaque markers, that defines the orifice of the valve structure such that the orifice can be oriented with a particular anatomical feature under imaging, such as to align the orifice with the long axis of the vessel.Type: GrantFiled: February 26, 2004Date of Patent: April 17, 2012Assignee: Cook Medical Technologies LLCInventors: Brian C. Case, Jacob A. Flagle, Michael L. Garrison, Andrew K. Hoffa, Ray Leonard, II
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Patent number: 8147501Abstract: The present invention provides improved and simplified methods of vascular or hollow organ suture-less anastomosis for attachment of artificial standard vascular graft to the vessel wall in order to reduce the duration of the surgical procedure and its costs.Type: GrantFiled: July 7, 2008Date of Patent: April 3, 2012Assignee: HDH Medical Ltd.Inventors: Igor Waysbeyn, Irina Vaysbeyn
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Patent number: 8133284Abstract: An improved hip prosthesis includes an acetabular cup bearing component constructed from a relatively hard and high strength ceramic material for articulation with a ball-shaped femoral head component which may be constructed from a compatible ceramic or metal material. In one form, the acetabular cup further includes a ceramic porous bone ingrowth surface adhered thereto for secure ingrowth attachment to natural patient bone.Type: GrantFiled: March 26, 2010Date of Patent: March 13, 2012Assignee: Amedica CorporationInventors: K. Scott Ely, Ashok C. Khandkar, Ramaswamy Lakshminarayanan, Aaron A. Hofmann
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Patent number: 8123812Abstract: A prosthesis for articulation (e.g., hip or joint prosthesis) is provided, which includes a pair of articulation components respectively defining a pair of articulation surfaces movably engageable with each other. In some embodiments, each of the articulation surfaces is formed from a biocompatible ceramic (e.g., doped silicon nitride ceramic) having a flexural strength greater than about 700 Mega-Pascal (MPa) and a toughness greater than about 7 Mega-Pascal root meter (MPam0.5).Type: GrantFiled: August 27, 2009Date of Patent: February 28, 2012Assignee: Amedica CorporationInventor: Ashok C. Khandkar
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Patent number: 8118864Abstract: An endovascular graft of the present invention embodies a graft system utilizing the textile fabric of the prosthesis for drug storage and delivery. These drug-eluting devices involve treating the textile fabric with therapeutic agents to provide a method of delivery to both the outer surface of the graft and the inner surface of the graft. An endovascular graft system having a fuzz texturing on the outer periphery of the graft where the texturing includes a therapeutic agent coating applied to the texturing material is also contemplated. An expandable attachment frame further includes drug storage and delivery capabilities in the cavities formed in the V-hooks and apices. Therapeutic agents can also included in the radiopaque coating or loading to serve as a reservoir for controlled drug delivery.Type: GrantFiled: May 25, 2004Date of Patent: February 21, 2012Assignee: Endovascular Technologies, Inc.Inventors: Arnold M. Escano, Joanne L. Parker, Rodney Reinhardt
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Patent number: 8118858Abstract: An intraluminal stent made of a zig-zag or sinusoidal member defining a successive series of struts connected by apex sections and formed into a series of axially displaced hoop members wherein at least one of the hoop members has at least one strut connected to a strut of an adjacent hoop. The connected struts may be connected by spot welding, continuous welding, or suturing, for example, or by a bridging member connected to each strut, and may be spaced along the length of the stent in a pattern to form a connective spine. The number of zigs of the zig-zag member in each hoop member may be varied, as can the zig length. A plurality of connective spines may also be included.Type: GrantFiled: December 29, 2003Date of Patent: February 21, 2012Assignee: Boston Scientific Scimed, Inc.Inventors: David Tseng, Ellen Golds, Bruc Parsons
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Patent number: 8048141Abstract: Embodiments of the present invention relate to medical devices that provide signals to diagnostic equipment such that functionality of an implantable member can be determined. In particular, various designs and structures are utilized to signal tissue growth on an implantable member such as a stent. The tissue growth can limit flow through the stented lumen. If the growth has a thickness above a certain limit, a signal can be detected by diagnostic equipment such that a proper diagnosis can be made.Type: GrantFiled: December 7, 2004Date of Patent: November 1, 2011Assignee: Boston Scientific Scimed, Inc.Inventor: Jonathan S. Stinson
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Patent number: 7682389Abstract: There is provided an artificial cardiac or heart valve, more particularly a flexible leaflet heart valve used to replace natural aortic or pulmonary valves of the heart in which the leaflet geometry is defined by a parabolic function and a method of manufacturing said artificial cardiac valves. In addition, there is provided leaflets which have geometry defined by a parabolic function.Type: GrantFiled: March 22, 2004Date of Patent: March 23, 2010Assignee: AorTech International PLCInventor: Jason Gordon Beith
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Patent number: 7682384Abstract: An expandable stent comprised of a plurality of helical segments is disclosed. In one embodiment, the stent is generally cylindrical in shape having a cylindrical axis, and comprises a first and second set of helical segments. The helical segments in the first set are substantially parallel and have a first pitch forming a first helical angle with respect to the cylindrical axis. The helical segments in the second set are also generally parallel to each other and form a second pitch that differs from the first pitch, thereby forming a second helical angle with respect to the cylindrical axis. In an alternative embodiment, the stent comprises one set of helical segments and a plurality of circumferential elements that are joined together by the helical segments to form a plurality of cylindrical elements which are joined together to form a stent body. The stent may also have endzones.Type: GrantFiled: October 1, 2008Date of Patent: March 23, 2010Assignee: OrbusNeich Medical, Inc.Inventors: Scott J. Addonizio, David L. Camp, Jr., Gary J. Becker, John D. Pazienza
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Patent number: 7666229Abstract: An implantable articulating bone prosthesis (e.g., hip or joint prosthesis) is provided, which includes a pair of articulation components respectively defining a pair of articulation surfaces movably engageable with each other. Each of the articulation surfaces is formed from a biocompatible ceramic (e.g., doped silicon nitride ceramic) having a flexural strength greater than about 700 Mega-Pascal (MPa) and a toughness greater than about 7 Mega-Pascal root meter (MPam0.5).Type: GrantFiled: November 12, 2004Date of Patent: February 23, 2010Assignee: Amedica CorporationInventor: Ashok C. Khandkar
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Patent number: 7563279Abstract: A system and method that minimizes plaque accumulation on a stent and thereby restenosis that could require a subsequent invasive medical procedure following stent implantation. The stent, essentially an expandable wire mesh tube comprised of a plurality of integral lattice portions, configured for expansion within a blood vessel of a patient, is formed with an electrically-controlled, biocompatible device as one of its integral lattice portions. In a first implementation, the biocompatible device is under control of an externally-positioned controller which causes the device to emit an ultrasonic wave at a frequency corresponding to the mechanical resonance of the stent and thereby minimize accumulation of plaque. In a second or supplemental implementation, the device is or other portions of the stent are coated with a drug that can be controllably eluted by passing a current through the coating under control of the biocompatible device and the externally-positioned controller.Type: GrantFiled: June 20, 2005Date of Patent: July 21, 2009Assignee: Alfred E. Mann Foundation for Scientific ResearchInventor: Brian J. Lasater
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Patent number: 7531003Abstract: Prosthetic wrist implants and methods are provided. The prosthetic wrist implant includes a radial component including a base member having an upper bearing surface and a lower surface having an elongated radial stem for fixation to a radius bone. The elongated radial stem can be in an off-center position in relation to a center of the lower surface. A carpal component is also provided including a substantially planar base member having an upper surface and a lower surface with at least one socket protrusion extending therefrom, and may further included an elongated carpal post member for fixation to one or more carpal bones. An articulating bearing component for placement between the radial and carpal components is provided and includes an upper surface defining at least one socket recess and a lower bearing surface for cooperative engagement with the upper bearing surface of the radial component.Type: GrantFiled: September 18, 2003Date of Patent: May 12, 2009Assignee: Integra LifeSciences CorporationInventor: Eric S. Reindel
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Patent number: 7524329Abstract: A self-contracting stent for use at a treatment site comprising shape memory material is provided. The stent may have an initial diameter for delivery to the treatment site and an expanded diameter when deployed at the treatment site. The stent further may have a contracted diameter when subjected to a temperature at or above a transition temperature. The contracted diameter is less than the expanded diameter and permits repositioning or removal of the stent from the treatment site. Additionally, a method for delivering and recovering the stent from a treatment site is provided. The method includes delivering a stent to a treatment site and expanding the stent at the treatment site so that the stent is deployed at the treatment site. The method further includes changing the temperature of the stent at the treatment site to at least a transition temperature to cause the stent to contract.Type: GrantFiled: February 6, 2006Date of Patent: April 28, 2009Assignee: Wilson-Cook Medical Inc.Inventor: Brian K. Rucker
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Patent number: 7507257Abstract: An injectable resorbable bone graft material, and methods of using the same, provide increased compressive strength after injection in a bone defect. The bone graft material is made from calcium sulfate hemihydrate having a thick stubby rod-like crystalline structure and low water-carrying capacity.Type: GrantFiled: February 4, 2004Date of Patent: March 24, 2009Assignee: Wright Medical Technology, Inc.Inventors: Jantzen A. Cole, Michael E. Carroll, Jon P. Moseley, Kelly C. Richelsoph
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Patent number: 7481838Abstract: A highly flexible tissue-type heart valve is disclosed having a structural stent in a generally cylindrical configuration with cusps and commissures that are permitted to move radially. The stent commissures are constructed so that the cusps are pivotably or flexibly coupled together at the commissures to permit relative movement therebetween.Type: GrantFiled: December 5, 2003Date of Patent: January 27, 2009Assignee: Edwards Lifesciences CorporationInventors: Alain F. Carpentier, Stefan G. Schreck, Richard S. Rhee, Diana Nguyen-Thien-Nhon, Hung Ly Lam, William Recktenwald
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Patent number: 7473417Abstract: Preferred embodiments of the present invention relate to polymeric medical devices, such as stents. More particularly, the compositions disclosed herein comprise halogen-containing phenol moeities, that may be used for medical devices and other uses whereby bioresorbable and radiopaque and physicomechanical properties are desired.Type: GrantFiled: August 10, 2005Date of Patent: January 6, 2009Assignee: REVA Medical, Inc.Inventors: Joan Zeltinger, Donald K. Brandom
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Patent number: 7473272Abstract: A self-expanding stent includes a plurality of segments having an alternating repeating pattern; each of the segments having connected crowns and unconnected crowns, wherein the unconnected crowns can be fully straightened without damage or permanent distortion to the unconnected crowns; and connectors extending between and connecting adjacent connected crowns of adjacent segments. The self-expanding stent catheter has a minimum crossing profile and the stent compressed for deployment therein is recapturable.Type: GrantFiled: August 17, 2005Date of Patent: January 6, 2009Assignee: Medtronic Vascular, Inc.Inventor: Jack Pryor
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Patent number: 7470284Abstract: The present invention discloses devices and methods for performing intravascular procedures with out cardiac bypass. The devices include various embodiments of temporary filter devices, temporary valves, and prosthetic valves. The temporary filter devices have one or more cannulae which provide access for surgical tools for effecting repair of the cardiac valves. A cannula may have filters of various configurations encircling the distal region of the cannula, which prevent embolitic material from entering the coronary arteries and aorta. The temporary valve devices may also have one or more cannulae which guide the insertion of the valve into the aorta. The valve devices expand in the aorta to occupy the entire flow path of the vessel. In one embodiment, the temporary valve is a disc of flexible, porous, material that acts to filter blood passing therethrough. A set of valve leaflets extend peripherally from the disc.Type: GrantFiled: February 25, 2004Date of Patent: December 30, 2008Assignee: Medtronic, Inc.Inventors: Gregory H. Lambrecht, John Liddicoat, Robert Kevin Moore