Patents by Inventor Grant T. Hoffman
Grant T. Hoffman 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: 10226264Abstract: A device for thrombolytic therapy is provided. The device includes an elongate catheter with a distal end portion and a proximal end portion and a first lumen extending through both distal and proximal end portions. The distal end portion of the catheter includes an echogenic tubular potion that defines or surrounds a portion of the first lumen. An expandable balloon coaxially surrounds the tubular portion. The tubular portion additionally includes a plurality of indentations defined upon an outer surface thereof.Type: GrantFiled: July 23, 2012Date of Patent: March 12, 2019Assignee: Cook Medical Technologies LLCInventors: Charles L. McIntosh, Ram H. Paul, Jr., Darin G. Schaeffer, M. Kem Hawkins, Frank J. Fischer, Jr., Grant T. Hoffman
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Patent number: 9913741Abstract: A delivery system is provided for a self-expanding medical device. The delivery system has a handle assembly with a housing. The housing has a slot with a deployment knob extending therethrough. The self-expanding medical device is deployed by restraining the housing of the handle assembly and pulling on the deployment knob. This causes an outer sheath to withdraw proximally from an inner catheter to release the self-expanding medical device from a space between the outer sheath and inner catheter.Type: GrantFiled: July 5, 2012Date of Patent: March 13, 2018Assignee: Cook Medical Technologies LLCInventors: Jeffry S. Melsheimer, Grant T. Hoffman, Joseph E. Hughes, Gregory A. Frankland, Tyler Bunch
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Patent number: 9901434Abstract: An embolic protection device for capturing emboli in a body vessel having a frame and a z-stent waist band. The frame includes a plurality of struts configured to open radially to define an expanded state of the device for capturing emboli and to fold along the longitudinal axis to define a collapsed state of the device for deployment and retrieval. The waist band has an open and a closed state and is attached to within the frame between a proximal and distal end. The waist band is formed of a plurality of members attached at a joint to an adjacent member such that the members lie substantially parallel in the closed state and form a āZā pattern in the open state. A filter portion is attached to the waist band and configured to capture emboli in the expanded state.Type: GrantFiled: February 27, 2008Date of Patent: February 27, 2018Assignee: COOK MEDICAL TECHNOLOGIES LLCInventor: Grant T. Hoffman
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Patent number: 9636458Abstract: An injection device for injecting a medicant into a plurality of tissue sites in a patient for a selected treatment is constructed and arranged such that the number of tissue sites is the total number for the selected treatment thereby requiring a single positioning step. The injection device includes a body having a syringe and a control linkage, the syringe including a plurality of barrels, and a cooperating plunger array including a plurality of plungers. Each barrel receives a corresponding plunger. The injection device further includes a plurality of injection needles connected to the syringe wherein one injection needle is connected to each barrel, a multi-lumen tip, a shaft connected to the multi-lumen tip and extending between said multi-lumen tip and said body. The control linkage is connected to each needle so as to move each needle between a deployed injection position and a retracted position.Type: GrantFiled: January 23, 2015Date of Patent: May 2, 2017Assignee: Muffin IncorporatedInventors: Grant T. Hoffman, Robert Eells, Wen Hong Neoh, Jeffry S. Melsheimer
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Publication number: 20160174986Abstract: A device and method for supporting a joint formed by first and second patient tissue structures are provided. A device body includes a band having a first band end and a second band end laterally separated by a band length. The first and second band ends are configured for selective mutual interconnection. A top band portion and a bottom band portion are longitudinally separated by a band height. An inner surface of a device body is directly adjacent to the joint and is attached to at least one of the first and second patient tissue structures during use. An outer surface of the device body, oppositely facing from the inner surface, includes a semi-permeable membrane. The membrane permits liquid to penetrate therethrough in a first direction from the outer toward the inner surface. The membrane substantially prevents liquid from penetrating therethrough in a second direction opposite the first direction.Type: ApplicationFiled: July 2, 2015Publication date: June 23, 2016Inventors: David G. Vince, Grant T. Hoffman
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Patent number: 9314358Abstract: A deployment device for repair of a transected body vessel is described herein. Device can have a handle and one or more shafts coupled thereto. A prosthesis being retained by a sheath can be coupled to the delivery device. The sheath can have end portions coupled to one or more shafts. Rotation of a shaft can retract a sheath portion away from either end of the prosthesis for expansion thereof prior to the middle of the prosthesis. Continued rotation of a shaft can completely remove the sheath from the prosthesis, so that the prosthesis is fully expanded and couples the first and second vessel portions of the transected vessel together. Prosthesis may be retained by overlapping a tubular sheath and lacing a threading member therethrough. Prosthesis may be retained by a splittable sheath.Type: GrantFiled: February 17, 2014Date of Patent: April 19, 2016Assignee: Cook Medical Technologies LLCInventors: Jeffry S. Melsheimer, Robert M. Eells, Grant T. Hoffman
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Patent number: 9308074Abstract: A device for inferior retrieval of a vena cava filter includes an outer sheath with a first radial window closer to the distal end than the proximal end of the outer catheter; an inner sheath generally extending movably inside the lumen of the outer sheath and having a second radial window; and a snare tool having an elongated guide element extending through the inner sheath and a snare loop distally attached to the guide element. The snare loop is extendable outward through the two radial windows.Type: GrantFiled: December 4, 2012Date of Patent: April 12, 2016Assignee: COOK MEDICAL TECHNOLOGIES LLCInventors: Grant T. Hoffman, Jeffry S. Melsheimer, Robert Eells, Jonathan L. Bennett, Brandon Arnett, Shavonna Warren
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Patent number: 9226734Abstract: Among other things, there are disclosed embodiments of a biopsy device using relative rotational motion to obtain a full-core biopsy sample. Inner and outer tubular members are provided connected to a handle. Each member includes a slit, and the members are rotatable with respect to each other. The device is inserted into a patient to a sampling site, and with the slits co-oriented, is extended into the sampling site. Tissue enters the tubular members through the slits, and one or both members are rotated to cut off and enclose tissue within the inner tubular member.Type: GrantFiled: March 23, 2012Date of Patent: January 5, 2016Assignee: Cook Medical Technologies LLCInventors: Robert Eells, Jeffry S. Melsheimer, Grant T. Hoffman
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Patent number: 9192473Abstract: The disclosure relates to support frames for prosthetic implantable valves. The support frames may include a plurality of symmetrically arrayed interconnected U-shaped member structures. Preferred support frames are tubular structures enclosing a longitudinal axis and including a plurality of U-shaped member structures facing a distal or a proximal end of the support frame. Each U-shaped member structure may be connected to a single longitudinally adjacent U-shaped member facing in an opposite longitudinal direction, as well as two laterally adjacent U-shaped members.Type: GrantFiled: November 19, 2012Date of Patent: November 24, 2015Assignee: COOK MEDICAL TECHNOLOGIES LLCInventors: Grant T. Hoffman, Sean D. Chambers, Ram H. Paul
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Publication number: 20150141956Abstract: An injection device for injecting a medicant into a plurality of tissue sites in a patient for a selected treatment is constructed and arranged such that the number of tissue sites is the total number for the selected treatment thereby requiring a single positioning step. The injection device includes a body having a syringe and a control linkage, the syringe including a plurality of barrels, and a cooperating plunger array including a plurality of plungers. Each barrel receives a corresponding plunger. The injection device further includes a plurality of injection needles connected to the syringe wherein one injection needle is connected to each barrel, a multi-lumen tip, a shaft connected to the multi-lumen tip and extending between said multi-lumen tip and said body. The control linkage is connected to each needle so as to move each needle between a deployed injection position and a retracted position.Type: ApplicationFiled: January 23, 2015Publication date: May 21, 2015Inventors: Grant T. Hoffman, Robert Eells, Wen Hong Neoh, Jeffry S. Melsheimer
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Patent number: 8882821Abstract: A delivery cartridge, delivery system and a method for delivering a medical device are provided. The delivery cartridge includes a housing having a proximal end, a distal end and a cavity defined therein. The delivery cartridge further includes a proximal end covering member connected to the proximal end, a distal end covering member connected to the distal end, and a medical device positioned within the cavity. The housing is adapted to fit within a lumen of a delivery system.Type: GrantFiled: May 2, 2008Date of Patent: November 11, 2014Assignee: Cook Medical Technologies LLCInventors: F. Kristen Bailey, Grant T. Hoffman
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Patent number: 8870914Abstract: The invention is generally directed to devices and methods for sealing a puncture or an opening through a wall of a blood vessel or a body cavity. The device includes a structural member and a sealing material associated with the structural member. The structural member includes a rod, a first obstructing body and a second obstructing body. The first obstructing body is affixed against an inner surface of the wall of the blood vessel or body cavity and the second obstructing body is affixed against an outer surface of the wall of the blood vessel or body cavity once placed at the puncture or the opening. The sealing material includes a reconstituted or naturally-derived collagenous material, which can expand at the puncture or the opening to restore hemostasis and enhance sealing.Type: GrantFiled: September 11, 2007Date of Patent: October 28, 2014Assignee: Cook Medical Technologies LLCInventors: Grant T. Hoffman, James B. Hunt
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Patent number: 8828072Abstract: An extendable flushing system, a delivery system including an extendable flushing system and a method of flushing a delivery system are provided. The extendable flushing system includes flexible tubing having an extended configuration and a compressed configuration, a first tubing end and a second tubing end. The extendable flushing system also includes a flush port and a shuttle assembly. The flush port includes a first lumen operably connected to the first tubing end and an opening configured to receive fluid therethrough. The shuttle assembly is operably connected to the second tubing end forming a fluid flow path with the flush port and the shuttle assembly. The shuttle assembly is configured to be fluidly connected to a lumen of an elongate device. The shuttle assembly is movably positionable relative to the flush port and configured to move the flexible tubing between the compressed configuration and the extended configuration.Type: GrantFiled: July 19, 2011Date of Patent: September 9, 2014Assignee: Cook Medical Technologies LLCInventors: Grant T. Hoffman, Chase Wooley
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Patent number: 8814847Abstract: A delivery system for implanting a medical device into the body of a patient or subject and a method of use thereof. The delivery system includes a delivery catheter having a catheter lumen and an inner member extending therethrough. The inner member includes a distal tip portion, a proximal portion, and an intermediate portion, the intermediate portion being disposed adjacent to the distal end of the delivery catheter. A first sealing member, positioned near a distal end of the proximal portion, forms a fluid seal between the inner member and an inside surface of the delivery catheter. A second sealing member, positioned near a proximal end of the distal tip portion, forms a fluid seal between the inner member and an inside surface of the delivery catheter. The intermediate portion extends between the first seal and the second seal. In one embodiment, a medical device and a hydrating fluid are present in a device-containing region between the intermediate portion and the delivery catheter.Type: GrantFiled: July 13, 2007Date of Patent: August 26, 2014Assignee: Cook Medical Technologies LLCInventors: Grant T. Hoffman, F. Kristen Bailey
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Publication number: 20140236218Abstract: A filter device for capturing thrombi in a body vessel of a patient is disclosed. The device comprises first and second portions, each comprising a wire forming a zig-zag configuration. The configuration comprises a series of straight sections and a plurality of bends connected to the straight sections. The straight sections are joined by the bends, defining a first cell size and a second cell size. The filter device further comprises a filter portion connected to the first and second portions. The filter portion comprises the wire forming a zig-zag configuration having a series of straight sections and a plurality of bends connected to the straight sections. The straight sections of the filter portion are joined by the bends of the filter portion, defining a filter cell size. The filter portion is disposed at the arc of the iliac veins at opening of the inferior vena cava.Type: ApplicationFiled: April 23, 2014Publication date: August 21, 2014Applicant: Cook Medical Technologies LLCInventors: Alexandra Elizabeth Jantzen, Grant T. Hoffman
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Publication number: 20140200650Abstract: A deployment device for repair of a transected body vessel is described herein. Device can have a handle and one or more shafts coupled thereto. A prosthesis being retained by a sheath can be coupled to the delivery device. The sheath can have end portions coupled to one or more shafts. Rotation of a shaft can retract a sheath portion away from either end of the prosthesis for expansion thereof prior to the middle of the prosthesis. Continued rotation of a shaft can completely remove the sheath from the prosthesis, so that the prosthesis is fully expanded and couples the first and second vessel portions of the transected vessel together. Prosthesis may be retained by overlapping a tubular sheath and lacing a threading member therethrough. Prosthesis may be retained by a splittable sheath.Type: ApplicationFiled: February 17, 2014Publication date: July 17, 2014Applicant: Cook Medical Technologies LLCInventors: Jeffry S. Melsheimer, Robert M. Eells, Grant T. Hoffman
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Patent number: 8657866Abstract: A deployment device for repair of a transected body vessel is described herein. Device can have a handle and one or more shafts coupled thereto. A prosthesis being retained by a sheath can be coupled to the delivery device. The sheath can have end portions coupled to one or more shafts. Rotation of a shaft can retract a sheath portion away from either end of the prosthesis for expansion thereof prior to the middle of the prosthesis. Continued rotation of a shaft can completely remove the sheath from the prosthesis, so that the prosthesis is fully expanded and couples the first and second vessel portions of the transected vessel together. Prosthesis may be retained by overlapping a tubular sheath and lacing a threading member therethrough. Prosthesis may be retained by a splittable sheath.Type: GrantFiled: December 22, 2010Date of Patent: February 25, 2014Assignee: Cook Medical Technologies LLCInventors: Jeffry S. Melsheimer, Robert M. Eells, Grant T. Hoffman
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Patent number: 8518064Abstract: A method for occluding a body vessel in a patient to block or reduce blood flow therethrough includes puncturing a blood vessel wall at a proximal vessel entry site with a hollow needle and extending the needle through the proximal entry site into the vessel lumen. The needle is extended through the vessel lumen and extended through the vessel wall at a distal vessel exit site into the extravascular space surrounding the distal vessel exit site. An expandable biocompatible material, such as expandable extracellular matrix (ECM) material, is then ejected though the distal end of the needle into the extravascular space. Then, while continuing to eject the expandable biocompatible plug material, the distal end of the needle is retracted back through the distal vessel exit site into the vessel lumen, such that the plug material continuously extends between the extravascular space surrounding the distal vessel exit site into the vessel lumen.Type: GrantFiled: December 17, 2009Date of Patent: August 27, 2013Assignee: Cook Medical Technologies LLCInventors: Michael R. Kurrus, Grant T. Hoffman
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Publication number: 20130079867Abstract: The disclosure relates to support frames for prosthetic implantable valves. The support frames may include a plurality of symmetrically arrayed interconnected U-shaped member structures. Preferred support frames are tubular structures enclosing a longitudinal axis and including a plurality of U-shaped member structures facing a distal or a proximal end of the support frame. Each U-shaped member structure may be connected to a single longitudinally adjacent U-shaped member facing in an opposite longitudinal direction, as well as two laterally adjacent U-shaped members.Type: ApplicationFiled: November 19, 2012Publication date: March 28, 2013Inventors: Grant T. Hoffman, Sean D. Chambers, Ram H. Paul
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Patent number: 8372140Abstract: An implantable valve prosthesis is provided. The valve prosthesis includes a frame structure having first and second independent frame elements. A graft member is attached to both the first and second frame elements and includes a closure member, such as a valve leaflet. The closure member is movable between a first position that allows fluid flow through the prosthesis in a first, antegrade direction and a second position that restricts flow through the prosthesis in a second, retrograde direction.Type: GrantFiled: January 7, 2010Date of Patent: February 12, 2013Assignee: Cook Medical Technologies LLCInventors: Grant T. Hoffman, Sean D. Chambers, Jeffry S. Melsheimer