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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Publication number: 20230079970Abstract: A method of treating a lesion in a gastrointestinal tract and an injectate system are provided. The method includes injecting a crosslinkable gel into a first tissue layer, the crosslinkable gel increasing a volume of the first tissue layer. The method also includes providing a crosslinker and resecting a portion of a first tissue layer having the increased volume away from a second tissue layer creating an exposed region in a remaining portion of the first layer and leaving a portion of the gel covering at least a portion of the exposed region. The injectate system includes a crosslinkable gel and a crosslinker where the crosslinkable gel and the crosslinker form a crosslinked gel having a compressive modulus of about 10-500 kPa.Type: ApplicationFiled: September 7, 2022Publication date: March 16, 2023Applicant: Cook Medical Technologies LLCInventors: John C. Sigmon, JR., Shaun D. Gittard, Gregory J. Hardy, Christopher A. Carruthers, Darin G. Schaeffer
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Patent number: 11452798Abstract: A method of treating a lesion in a gastrointestinal tract and an injectate system are provided. The method includes injecting a crosslinkable gel into a first tissue layer, the crosslinkable gel increasing a volume of the first tissue layer. The method also includes providing a crosslinker and resecting a portion of a first tissue layer having the increased volume away from a second tissue layer creating an exposed region in a remaining portion of the first layer and leaving a portion of the gel covering at least a portion of the exposed region. The injectate system includes a crosslinkable gel and a crosslinker where the crosslinkable gel and the crosslinker form a crosslinked gel having a compressive modulus of about 10-500 kPa.Type: GrantFiled: September 27, 2018Date of Patent: September 27, 2022Assignee: Cook Medical Technologies LLCInventors: John C. Sigmon, Jr., Shaun D. Gittard, Gregory J. Hardy, Christopher A. Carruthers, Darin G. Schaeffer
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Patent number: 11241320Abstract: An endoluminal prosthesis system for a branched body lumen comprises a branch vessel prosthesis. The branch vessel prosthesis is deployable within a branch vessel body lumen and comprises a stent having a generally tubular body portion, a flareable proximal end portion, and a coupling portion disposed intermediate the body portion and the flareable portion. The coupling portion is more crush-resistant than the body portion. The flareable proximal end may be disposed within a fenestrated stent graft with coupling portion disposed in the fenestration of the fenestrated stent graft.Type: GrantFiled: June 8, 2020Date of Patent: February 8, 2022Assignee: Cook Medical Technologies LLCInventors: Darin G. Schaeffer, Scott E. Boatman, Jay A. Dittman, David Ernest Hartley
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Publication number: 20200405511Abstract: An endoluminal prosthesis system for a branched body lumen comprises a branch vessel prosthesis. The branch vessel prosthesis is deployable within a branch vessel body lumen and comprises a stent having a generally tubular body portion, a flareable proximal end portion, and a coupling portion disposed intermediate the body portion and the flareable portion. The coupling portion is more crush-resistant than the body portion. The flareable proximal end may be disposed within a fenestrated stent graft with coupling portion disposed in the fenestration of the fenestrated stent graft.Type: ApplicationFiled: June 8, 2020Publication date: December 31, 2020Applicant: COOK MEDICAL TECHNOLOGIES LLCInventors: Darin G. Schaeffer, Scott E. Boatman, Jay A. Dittman, David Ernest Hartley
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Publication number: 20200230372Abstract: A coated medical device (10) including a structure (12) adapted for introduction into a passage or vessel of a patient. The structure is formed of preferably a non-porous base material (14) having a bioactive material layer (18) disposed thereon. The medical device is preferably an implantable stent or balloon (26) of which the bioactive material layer is deposited thereon. The stent can be positioned around the balloon and another layer of the bioactive material posited over the entire structure and extending beyond the ends of the positioned stent. The ends of the balloon extend beyond the ends of the stent and include the bioactive material thereon for delivering the bioactive material to the cells of a vessel wall coming in contact therewith. The balloon further includes a layer of hydrophilic material (58) positioned between the base and bioactive material layers of the balloon.Type: ApplicationFiled: January 14, 2020Publication date: July 23, 2020Applicant: Cook Medical Technologies LLCInventors: Brian L. Bates, Scott E. Boatman, David G. Burton, Michael C. Hoffa, Darin G. Schaeffer, Jason S. Sturgeon, Anthony O. Ragheb
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Patent number: 10675163Abstract: An endoluminal prosthesis system for a branched body lumen comprises a branch vessel prosthesis. The branch vessel prosthesis is deployable within a branch vessel body lumen and comprises a stent having a generally tubular body portion, a flareable proximal end portion, and a coupling portion disposed intermediate the body portion and the flareable portion. The coupling portion is more crush-resistant than the body portion. The flareable proximal end may be disposed within a fenestrated stent graft wit with coupling portion disposed in the fenestration of the fenestrated stent graft.Type: GrantFiled: July 19, 2019Date of Patent: June 9, 2020Assignee: Cook Medical Technologies LLCInventors: Darin G. Schaeffer, Scott E. Boatman, Jay A. Dittman, David Ernest Hartley
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Patent number: 10617443Abstract: A balloon catheter is provided that may be used to dilate hardened regions of a stenosis. The balloon catheter is provided with one or more dilation elements that extend along a surface of a balloon. Each dilation element is monolithically connected to an outer surface of the balloon by a connector. The connector is sufficiently sized and designed to undergo stress-induced plastic deformation incurred during blow molding so that a significant portion of each of the dilation elements does not become absorbed into the wall of the final blow molded balloon, thereby maintaining the structural integrity of each of the dilation elements. The dilation element has a flattened outer surface along at least proximal and distal neck portions of the balloon.Type: GrantFiled: June 22, 2018Date of Patent: April 14, 2020Assignee: COOK MEDICAL TECHNOLOGIES LLCInventors: David G. Burton, Darin G. Schaeffer, David A. Drewes
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Patent number: 10532190Abstract: A coated medical device (10) including a structure (12) adapted for introduction into a passage or vessel of a patient. The structure is formed of preferably a non-porous base material (14) having a bioactive material layer (18) disposed thereon. The medical device is preferably an implantable stent or balloon (26) of which the bioactive material layer is deposited thereon. The stent can be positioned around the balloon and another layer of the bioactive material posited over the entire structure and extending beyond the ends of the positioned stent. The ends of the balloon extend beyond the ends of the stent and include the bioactive material thereon for delivering the bioactive material to the cells of a vessel wall coming in contact therewith. The balloon further includes a layer of hydrophilic material (58) positioned between the base and bioactive material layers of the balloon.Type: GrantFiled: September 28, 2010Date of Patent: January 14, 2020Assignee: Cook Medical Technologies LLCInventors: Brian L. Bates, Scott E. Boatman, David G. Burton, Michael C. Hoffa, Darin G. Schaeffer, Jason S. Sturgeon, Anthony O. Ragheb
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Publication number: 20190336311Abstract: An endoluminal prosthesis system for a branched body lumen comprises a branch vessel prosthesis. The branch vessel prosthesis is deployable within a branch vessel body lumen and comprises a stent having a generally tubular body portion, a flareable proximal end portion, and a coupling portion disposed intermediate the body portion and the flareable portion. The coupling portion is more crush-resistant than the body portion. The flareable proximal end may be disposed within a fenestrated stent graft wit with coupling portion disposed in the fenestration of the fenestrated stent graft.Type: ApplicationFiled: July 19, 2019Publication date: November 7, 2019Applicant: COOK MEDICAL TECHNOLOGIES LLCInventors: Darin G. Schaeffer, Scott E. Boatman, Jay A. Dittman, David Ernest Hartley
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Patent number: 10357386Abstract: An endoluminal prosthesis system for a branched body lumen comprises a branch vessel prosthesis. The branch vessel prosthesis is deployable within a branch vessel body lumen and comprises a stent having a generally tubular body portion, a flareable proximal end portion, and a coupling portion disposed intermediate the body portion and the flareable portion. The coupling portion is more crush-resistant than the body portion. The flareable proximal end may be disposed within a fenestrated stent graft wit with coupling portion disposed in the fenestration of the fenestrated stent graft.Type: GrantFiled: January 28, 2016Date of Patent: July 23, 2019Assignee: Cook Medical Technologies LLCInventors: Darin G. Schaeffer, Scott E. Boatman, Jay A. Dittman, David Ernest Hartley
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Patent number: 10314704Abstract: 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: GrantFiled: August 6, 2014Date of Patent: June 11, 2019Assignee: Cook Medical Technologies LLCInventor: Darin G. Schaeffer
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Publication number: 20190091374Abstract: A method of treating a lesion in a gastrointestinal tract and an injectate system are provided. The method includes injecting a crosslinkable gel into a first tissue layer, the crosslinkable gel increasing a volume of the first tissue layer. The method also includes providing a crosslinker and resecting a portion of a first tissue layer having the increased volume away from a second tissue layer creating an exposed region in a remaining portion of the first layer and leaving a portion of the gel covering at least a portion of the exposed region. The injectate system includes a crosslinkable gel and a crosslinker where the crosslinkable gel and the crosslinker form a crosslinked gel having a compressive modulus of about 10-500 kPa.Type: ApplicationFiled: September 27, 2018Publication date: March 28, 2019Applicant: Cook Medical Technologies LLCInventors: John C. Sigmon, JR., Shaun D. Gittard, Gregory J. Hardy, Christopher A. Carruthers, Darin G. Schaeffer
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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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Publication number: 20180296241Abstract: A balloon catheter is provided that may be used to dilate hardened regions of a stenosis. The balloon catheter is provided with one or more dilation elements that extend along a surface of a balloon. Each dilation element is monolithically connected to an outer surface of the balloon by a connector. The connector is sufficiently sized and designed to undergo stress-induced plastic deformation incurred during blow molding so that a significant portion of each of the dilation elements does not become absorbed into the wall of the final blow molded balloon, thereby maintaining the structural integrity of each of the dilation elements. The dilation element has a flattened outer surface along at least proximal and distal neck portions of the balloon.Type: ApplicationFiled: June 22, 2018Publication date: October 18, 2018Applicant: Cook Medical Technologies LLCInventors: David G. Burton, Darin G. Schaeffer, David A. Drewes
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Patent number: 10016212Abstract: A balloon catheter is provided that may be used to dilate hardened regions of a stenosis. The balloon catheter is provided with one or more dilation elements that extend along a surface of a balloon. Each dilation element is connected to an outer surface of the balloon by a connector. The connector is sufficiently sized and designed to undergo stress-induced plastic deformation incurred during blow molding so that a significant portion of each of the dilation elements does not become absorbed into the wall of the final blow molded balloon, thereby maintaining the structural integrity of each of the dilation elements.Type: GrantFiled: January 6, 2017Date of Patent: July 10, 2018Assignee: Cook Medical Technologies LLCInventors: David G. Burton, Darin G. Schaeffer, David A. Drewes
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Patent number: 9974674Abstract: A stent graft system for intraluminal deployment in an aorta and a branch vessel includes an aorta stent graft with a fenestration aligned with a branch vessel and a branch vessel prosthesis with a flaring portion at a proximal end and a tubular portion. When deployed, the flaring portion of the branch vessel prosthesis is retained within the aorta stent graft, and the tubular portion extends through the fenestration and into the branch vessel. The system includes at least one positional indicator, including a positional indicator associated with the branch vessel prosthesis for indicating the position of a point along the branch vessel prosthesis predetermined for optimal alignment with the fenestration during deployment.Type: GrantFiled: November 8, 2004Date of Patent: May 22, 2018Assignee: COOK MEDICAL TECHNOLOGIES LLCInventor: Darin G. Schaeffer
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Patent number: 9877711Abstract: Described are devices useful for providing hemostasis at a vascular access site, and related methods. Such devices can include first and second implant members cooperable when forced together to expand the first implant member in a tissue tract at the site. Such devices can also include an anchor member and a tether attached thereto. The anchor member can be deployed distally to the first implant member, within a vessel, and the tether can be tensioned to apply counterforce to the first implant member as the second implant member is forced into cooperative contact to expand the first implant member.Type: GrantFiled: September 4, 2014Date of Patent: January 30, 2018Assignee: Cook Medical Technologies LLCInventor: Darin G. Schaeffer
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Patent number: 9839721Abstract: 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: GrantFiled: April 18, 2013Date of Patent: December 12, 2017Assignee: Cook Medical Technologies, LLCInventors: P. Arun Mohan, Patrick Melder, Darin G. Schaeffer, Andrew J. Kaucher
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Patent number: 9782560Abstract: 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: GrantFiled: March 4, 2014Date of Patent: October 10, 2017Assignee: COOK MEDICAL TECHNOLOGIES, LLC.Inventor: Darin G. Schaeffer
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Publication number: 20170112526Abstract: A balloon catheter is provided that may be used to dilate hardened regions of a stenosis. The balloon catheter is provided with one or more dilation elements that extend along a surface of a balloon. Each dilation element is connected to an outer surface of the balloon by a connector. The connector is sufficiently sized and designed to undergo stress-induced plastic deformation incurred during blow molding so that a significant portion of each of the dilation elements does not become absorbed into the wall of the final blow molded balloon, thereby maintaining the structural integrity of each of the dilation elements.Type: ApplicationFiled: January 6, 2017Publication date: April 27, 2017Inventors: David G. Burton, Darin G. Schaeffer, David A. Drewes