Patents by Inventor Darin G. Schaeffer
Darin G. Schaeffer 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: 8915956Abstract: An endoluminal prosthesis with a moveable fenestration including a tubular graft body having a proximal end, a distal end, a surface plane at least one fenestration having a perimeter disposed in a sidewall of the tubular body between the proximal end and the distal end, a first biocompatible graft material, and a second biocompatible graft material adjacent to and surrounding the perimeter of the at least one fenestration. The second biocompatible graft material has at least one characteristic different from the first biocompatible graft material and is more flexible than the first biocompatible graft material and is movable relative to the surface plane of the tubular graft body.Type: GrantFiled: August 26, 2009Date of Patent: December 23, 2014Assignee: Cook Medical Technologies LLCInventors: Darin G. Schaeffer, Shyam Kuppurathanam
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Publication number: 20140371787Abstract: A device for closure of an opening formed through a wall of a body vessel of a patient is provided, as well as an introducer system for delivery of the closure device. Various embodiments include the closure device having hook members configured to engage the tissue interior of the body vessel wall, hook members configured to engage interstitial tissue adjacent to the body vessel, a plug member to contact sealably the opening from inside the body vessel, and combinations thereof. A retraction member is removably attached to the each of the embodiments to permit manipulation of the device. Remodelable material may be included with each of the embodiments to promote quicker healing. The introducer includes a sheath that is insertable through the opening and a pusher disposed within the lumen of the sheath and movable within the sheath lumen to deploy the device.Type: ApplicationFiled: August 29, 2014Publication date: December 18, 2014Inventor: Darin G Schaeffer
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Publication number: 20140350661Abstract: Described, in certain aspects of the invention, are apparatuses and methods for deploying artificial devices within the vascular system. One apparatus includes a delivery device having a lumen and a deployment member slidably received within the lumen. This apparatus further includes an artificial device having an anchoring element releasably engaged with the deployment member. Such an apparatus can be percutaneously delivered to a site within a vascular vessel, and thereafter manipulated so that the anchoring element attaches to the vessel wall. The delivery device and deployment member can then be withdrawn from the vessel, whereby the deployment member disengages from the anchoring element, leaving the artificial device implanted in the vessel.Type: ApplicationFiled: August 6, 2014Publication date: November 27, 2014Inventor: Darin G. Schaeffer
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Patent number: 8821532Abstract: A device for closure of an opening formed through a wall of a body vessel of a patient is provided, as well as an introducer system for delivery of the closure device. Various embodiments include the closure device having hook members configured to engage the tissue interior of the body vessel wall, hook members configured to engage interstitial tissue adjacent to the body vessel, a plug member to contact sealably the opening from inside the body vessel, and combinations thereof. A retraction member is removably attached to the each of the embodiments to permit manipulation of the device. Remodelable material may be included with each of the embodiments to promote quicker healing. The introducer includes a sheath that is insertable through the opening and a pusher disposed within the lumen of the sheath and movable within the sheath lumen to deploy the device.Type: GrantFiled: January 30, 2009Date of Patent: September 2, 2014Assignee: Cook Medical Technologies LLCInventor: Darin G. Schaeffer
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Patent number: 8795288Abstract: A device for providing access to a treatment site within the body of a patient includes a tubular member having a first, generally elongated configuration for introduction into the body of the patient, and deployable therein to a second configuration. The second configuration includes an axially displaced segment along the distal portion of the tubular member. The tubular member includes a side port oriented along the axially displaced segment, and further includes a lumen communicating with the side port. The lumen and side port are sized for passage therethrough of an interventional device for delivery to the treatment site.Type: GrantFiled: October 18, 2007Date of Patent: August 5, 2014Assignee: Cook Medical Technologies LLCInventors: Jeffry S. Melsheimer, Darin G. Schaeffer
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Patent number: 8784602Abstract: Catheter balloon assemblies (10) for delivering a therapeutic agent to a body vessel are provided, as well as related methods of manufacturing and methods of treatment. The catheter balloon assemblies may include a concentrically disposed dual balloon assembly at the distal portion of the catheter having an inner balloon (44), a porous outer balloon (42) concentrically arrayed around the inner balloon and a catheter shaft (30) adapted to deliver a therapeutic agent to the body vessel through the apertures in the outer balloon. Radial outward expansion of the inner balloon may urge the outer balloon into contact with the wall of a body vessel, where the therapeutic agent may be delivered from the catheter shaft through apertures in the outer balloon directly to the wall of the body vessel.Type: GrantFiled: May 22, 2012Date of Patent: July 22, 2014Assignee: Cook Medical Technologies LLCInventors: Darin G. Schaeffer, David Christian Lentz
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Patent number: 8771338Abstract: Implantable frames for use in body passages are provided herein. The implantable frames can include a plurality of hoop members joined by a plurality of longitudinal connecting members to form a tubular frame defining a cylindrical lumen. The plurality of longitudinal connecting members may include first and second longitudinal connecting members joining a first hoop member to a second hoop member such that the first and second longitudinal connecting members extend across an entire space separating the first and second hoop members.Type: GrantFiled: June 24, 2013Date of Patent: July 8, 2014Assignee: Cook Medical Technologies LLCInventors: Darin G. Schaeffer, Jacob A. Flagle, Michael L. Garrison, Brian C. Case, Andrew K. Hoffa
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Publication number: 20140188044Abstract: A balloon catheter device of the present invention includes an elongate catheter shaft comprising multifilar cable tubing having a proximal portion and a distal portion. The proximal portion includes a coating that allows the shaft to provide a patent fluid passage, and a part of the distal portion inside a balloon may be uncoated or otherwise open to the balloon lumen, allowing for passage of fluid through the shaft into the balloon lumen. The distal cable tube end includes a connection structure configured to provide desirable strength, pushability, and trackability.Type: ApplicationFiled: March 4, 2014Publication date: July 3, 2014Applicant: Cook Medical Technologies LLCInventor: Darin G. Schaeffer
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Patent number: 8758295Abstract: A balloon catheter device (1700) includes an elongate catheter shaft comprising multifilar cable tubing (1706) having a proximal portion and a distal portion. The proximal portion includes a coating (1708) that allows the shaft to provide a patent fluid passage. The distal cable tube end includes a connection structure (1723) configured to provide desirable strength, pushability, and trackability.Type: GrantFiled: September 22, 2010Date of Patent: June 24, 2014Assignee: Cook Medical Technologies LLCInventor: Darin G. Schaeffer
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Publication number: 20140148914Abstract: Described are graft devices useful for treating surgical defects, delivery implements for delivery of the graft devices, combinations thereof, and methods for the preparation and use thereof. In certain aspects a tonsillectomy graft can include convexly curved outer edges, where the graft is sized and configured such that these outer edges reside proximate and along tonsillar pillars bounding a surgical tonsillectomy defect. The graft can include one or more pull tethers laced to the graft and functional to draw these outer edges toward one another when tensioned. The graft can be combined with a delivery implement having a delivery head and attached handle, where the delivery head is sized for receipt onto the tonsillectomy defect to deliver the graft. Additional product features, as well as associated methods, are also described.Type: ApplicationFiled: April 18, 2013Publication date: May 29, 2014Inventors: P. Arun Mohan, Patrick Melder, Darin G. Schaeffer, Andrew J. Kaucher
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Publication number: 20130289706Abstract: Implantable frames for use in body passages are provided herein. The implantable frames can include a plurality of hoop members joined by a plurality of longitudinal connecting members to form a tubular frame defining a cylindrical lumen. The plurality of longitudinal connecting members may include first and second longitudinal connecting members joining a first hoop member to a second hoop member such that the first and second longitudinal connecting members extend across an entire space separating the first and second hoop members.Type: ApplicationFiled: June 24, 2013Publication date: October 31, 2013Inventors: Darin G. Schaeffer, Jacob A. Flagle, Michael L. Garrison, Brian C. Case, Andrew K. Hoffa
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Publication number: 20130226291Abstract: A valve prosthesis, such as an artificial venous valve, is described. The valve prosthesis has a support frame formed from a cannula and an attached covering that defines an opening adapted to move between a first position in which the opening is open to fluid flow and a second position in which the opening is closed to fluid flow. The support frame includes a leaflet support portion and a circumferential centering support element disposed adjacent the leaflet support portion with respect to a lengthwise axis of the support frame and mirroring the leaflet support portion with respect to a transverse axis of the support frame.Type: ApplicationFiled: February 25, 2013Publication date: August 29, 2013Inventors: DUSAN PAVCNIK, BRIAN C. CASE, JACOB A. FLAGLE, MICHAEL GARRISON, ANDREW K. HOFFA, RAYMOND B. LEONARD, II, THOMAS A. OSBORNE, RAM H. PAUL, JR., DARIN G. SCHAEFFER, RICHARD B. SISKEN
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Patent number: 8469989Abstract: Coaxial balloon catheters are described herein. The balloon catheter can include outer and inner tubes in a coaxial relationship, with a balloon attached to an end thereof. A support sleeve can be disposed around the inner tubular member proximate the proximal end of the balloon. The support sleeve can have a channel formed therein to communicate with an inflation lumen and a balloon interior. The channel may be formed by separation of two longitudinal edges extending through the support sleeve. The support sleeve can include an outward extending portion that is sized to engage the distal end of the outer tube in order to limit relative movement between the inner and outer tubes. The support sleeve can be configured to orient the inner tube eccentrically or concentrically relative to the outer tube. The support sleeve can have an elongate body that can be extended in proximal or distal direction.Type: GrantFiled: December 15, 2010Date of Patent: June 25, 2013Assignee: Cook Medical Technologies LLCInventors: Darin G. Schaeffer, David G. Burton
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Patent number: 8470020Abstract: Implantable frames for use in body passages are provided herein. The implantable frames can include a plurality of hoop members joined by a plurality of longitudinal connecting members to form a tubular frame defining a cylindrical lumen. The plurality of longitudinal connecting members may include first and second longitudinal connecting members joining a first hoop member to a second hoop member such that the first and second longitudinal connecting members extend across an entire space separating the first and second hoop members.Type: GrantFiled: April 16, 2012Date of Patent: June 25, 2013Assignee: Cook Medical Technologies LLCInventors: Darin G. Schaeffer, Jacob A. Flagle, Michael L. Garrison, Brian C. Case, Andrew K. Hoffa
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Publication number: 20130158559Abstract: In at least one embodiment of the present invention, a device for mixing and dispensing a bone cement mixture is provided. The device comprises a first chamber and a second chamber. The first chamber is for containing a first bone cement component. The second chamber is for containing a second bone cement component. A valve is in fluid communication with the first and second chambers. A first and a second plunger are respectively within the first and second chambers and are configured to actuate within their respective chambers. When the valve is in a first position actuating the first plunger advances the first bone cement component into the second chamber to form the bone cement mixture.Type: ApplicationFiled: December 20, 2011Publication date: June 20, 2013Inventor: Darin G. Schaeffer
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Publication number: 20130053769Abstract: Catheter balloon assemblies (10) for delivering a therapeutic agent to a body vessel are provided, as well as related methods of manufacturing and methods of treatment. The catheter balloon assemblies may include a concentrically disposed dual balloon assembly at the distal portion of the catheter having an inner balloon (44), a porous outer balloon (42) concentrically arrayed around the inner balloon and a catheter shaft (30) adapted to deliver a therapeutic agent to the body vessel through the apertures in the outer balloon. Radial outward expansion of the inner balloon may urge the outer balloon into contact with the wall of a body vessel, where the therapeutic agent may be delivered from the catheter shaft through apertures in the outer balloon directly to the wall of the body vessel.Type: ApplicationFiled: May 22, 2012Publication date: February 28, 2013Applicant: Cook Medical TechnologiesInventors: Darin G. Schaeffer, David Christian Lentz
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Patent number: 8382822Abstract: A valve prosthesis, such as an artificial venous valve, having a support frame and leaf structure comprising one or more leaflets in which the outer edge of each leaflet engages the inner circumference of the bodily passageway along a serpentine path urged against the passageway by an expandable frame, while the inner edges move in response to fluid to restrict retrograde flow. Optionally, one or more elements can extend from the support frame/leaf structure to provide centering support and/or protection from the leaflet adhering to the vessel wall. In one embodiment, the centering support structure comprises a second or third expandable frames attached to and extending from the proximal and/or distal ends of main valve structure and support frame. In another embodiment, one or more support elements extend outward from the valve support frame to engage the vessel wall to provide greater longitudinal stability.Type: GrantFiled: October 7, 2009Date of Patent: February 26, 2013Assignees: Cook Medical Technologies LLC, Oregon Health & Science UniversityInventors: Dusan Pavcnik, Brian C. Case, Jacob A. Flagle, Michael Garrison, Andrew K. Hoffa, Raymond B. Leonard, II, Thomas A. Osborne, Ram H. Paul, Jr., Darin G. Schaeffer, Richard B Sisken
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Publication number: 20130023802Abstract: 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: ApplicationFiled: July 23, 2012Publication date: January 24, 2013Inventors: Charles L. McIntosh, Ram H. Paul, JR., Darin G. Schaeffer, M. Kem Hawkins, Frank J. Fischer, JR., Grant T. Hoffman
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Publication number: 20130018453Abstract: An expandable venous valve having a support structure that is configured to enlarge the area adjacent to the valve structure such that the flow patterns of retrograde flow are modified in a way that facilitates the flushing of the pockets at the base of the valve area to prevent stagnation of bodily fluid, which in the venous system, can lead to thrombus formation. The enlarged pocket areas can be created by forming an artificial sinus adjacent the valve structure in an unsupported section of vessel wall between two support frame sections or the support frame can comprise an expanded-diameter intermediate or proximal section that forms an artificial sinus adjacent the valve structure.Type: ApplicationFiled: July 16, 2012Publication date: January 17, 2013Inventors: Brian C. Case, Michael L. Garrison, Andrew Hoffa, Darin G. Schaeffer, Jacob A. Flagle
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Patent number: 8287586Abstract: A branch vessel prosthesis for use with an aorta stent graft defining a lumen and having a fenestration aligned with a branch vessel, includes an expandable stent that has a tubular portion, a flareable portion, and at least one bending portion located between the tubular and the flareable portions. Upon deployment of the branch vessel prosthesis, the flareable portion is flared by bending of the bending portion.Type: GrantFiled: November 8, 2004Date of Patent: October 16, 2012Assignee: Cook Medical Technologies LLCInventors: Darin G. Schaeffer, Michael C. Hoffa