Patents by Inventor Fred H. Co
Fred H. Co 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).
-
Patent number: 11925337Abstract: Apparatus and methods for sealing a puncture through tissue includes an introducer sheath sized for introduction into a puncture, cartridge sized for insertion into the introducer carrying a sealant, and a locking element for coupling the introducer sheath to the cartridge. When the cartridge is advanced into the introducer sheath, the locking element couples the introducer sheath to the cartridge such that subsequent retraction of the cartridge causes the introducer sheath to retract, thereby deploying the sealant from the cartridge within the puncture beyond the introducer sheath.Type: GrantFiled: December 23, 2019Date of Patent: March 12, 2024Assignee: ACCESS CLOSURE, INC.Inventors: Celso J. Bagaoisan, Sieu Duong, Fred H. Co, Juan Domingo
-
Patent number: 11850386Abstract: Inflation devices and methods for using them are provided for selectively inflating and deflating multiple balloons on a catheter. For example, the inflation device may include a first valve including a plurality of first valve ports and a first valve member movable between multiple positions for opening and closing fluid paths between the first valve ports, a second valve including a plurality of second valve ports and a second valve member movable between multiple positions for opening and closing fluid paths between the second valve ports, and an actuator coupled to the first and second valve members for directing the first and second valve members between multiple positions, e.g., to selectively pull vacuum and sequentially inflate the balloons.Type: GrantFiled: October 3, 2019Date of Patent: December 26, 2023Assignee: OSTIAL CORPORATIONInventors: Archimedes Sanati, Jake Wolenberg, Fred H. Co, Yi Yang, Farhad Khosravi
-
Patent number: 11510797Abstract: Apparatus and methods are provided for flaring a stent deployed within a branch vessel including an ostium communicating with a main vessel, a first end of the stent extending at least partially from the branch. A catheter is provided that includes a balloon having a reinforced region adjacent an unreinforced region. When the balloon is positioned at a desired location, e.g., within a stent, prosthetic valve, or other tubular prosthesis, the balloon may be inflated to a first pressure causing the reinforced and unreinforced regions to expand substantially simultaneously. Upon inflation of the balloon beyond the first pressure, the reinforced region of the balloon remains at the first diameter and the unreinforced region continues to expand, e.g., to flare one or more ends of the prosthesis.Type: GrantFiled: November 11, 2019Date of Patent: November 29, 2022Assignee: OSTIAL CORPORATIONInventors: Yi Yang, Jake Wolenberg, Archimedes Sanati, Fred H. Co, Farhad Khosravi
-
Publication number: 20210268141Abstract: Methods are provided for making freeze dried hydrogel and structures therefrom that may be introduced into a patient's body for medical applications. Precursor components are combined to initiate crosslinking. The combined precursor components are placed in a chilled tray, and allowed to crosslink to a desired level of complete crosslinking before and/or after being placed onto the tray. The partially crosslinked hydrogel is frozen and freeze dried. After freeze drying, the hydrogel is conditioned to substantially complete crosslinking, and formed into one or more structures, e.g., plugs, hemostatic, or other medical devices. For example, the hydrogel may be cut, machined, rolled, folded, compressed, and/or cored into that may be loaded into delivery devices that may be introduced into a body to implant or otherwise deliver the structures into the body, e.g., to seal a puncture or other passage through tissue.Type: ApplicationFiled: February 12, 2021Publication date: September 2, 2021Inventors: Amarpreet S. Sawhney, Steven L. Bennett, Suresh S. Pai, Scott R. Sershen, Fred H. Co
-
Patent number: 10940231Abstract: Methods are provided for making freeze dried hydrogel and structures therefrom that may be introduced into a patient's body for medical applications. Precursor components are combined to initiate crosslinking. The combined precursor components are placed in a chilled tray, and allowed to crosslink to a desired level of complete crosslinking before and/or after being placed onto the tray. The partially crosslinked hydrogel is frozen and freeze dried. After freeze drying, the hydrogel is conditioned to substantially complete crosslinking, and formed into one or more structures, e.g., plugs, hemostatic, or other medical devices. For example, the hydrogel may be cut, machined, rolled, folded, compressed, and/or cored into that may be loaded into delivery devices that may be introduced into a body to implant or otherwise deliver the structures into the body, e.g., to seal a puncture or other passage through tissue.Type: GrantFiled: July 9, 2014Date of Patent: March 9, 2021Assignee: Incept, LLCInventors: Amarpreet S. Sawhney, Steven L. Bennett, Suresh S. Pai, Scott R. Sershen, Fred H. Co
-
Publication number: 20200129165Abstract: Apparatus and methods for sealing a puncture through tissue includes an introducer sheath sized for introduction into a puncture, cartridge sized for insertion into the introducer carrying a sealant, and a locking element for coupling the introducer sheath to the cartridge. When the cartridge is advanced into the introducer sheath, the locking element couples the introducer sheath to the cartridge such that subsequent retraction of the cartridge causes the introducer sheath to retract, thereby deploying the sealant from the cartridge within the puncture beyond the introducer sheath.Type: ApplicationFiled: December 23, 2019Publication date: April 30, 2020Inventors: Celso J. Bagaoisan, Sieu Duong, Fred H. Co, Juan Domingo
-
Publication number: 20200108234Abstract: Inflation devices and methods for using them are provided for selectively inflating and deflating multiple balloons on a catheter. For example, the inflation device may include a first valve including a plurality of first valve ports and a first valve member movable between multiple positions for opening and closing fluid paths between the first valve ports, a second valve including a plurality of second valve ports and a second valve member movable between multiple positions for opening and closing fluid paths between the second valve ports, and an actuator coupled to the first and second valve members for directing the first and second valve members between multiple positions, e.g., to selectively pull vacuum and sequentially inflate the balloons.Type: ApplicationFiled: October 3, 2019Publication date: April 9, 2020Inventors: Archimedes Sanati, Jake Wolenberg, Fred H. Co, Yi Yang, Farhad Khosravi
-
Publication number: 20200078197Abstract: Apparatus and methods are provided for flaring a stent deployed within a branch vessel including an ostium communicating with a main vessel, a first end of the stent extending at least partially from the branch. A catheter is provided that includes a balloon having a reinforced region adjacent an unreinforced region. When the balloon is positioned at a desired location, e.g., within a stent, prosthetic valve, or other tubular prosthesis, the balloon may be inflated to a first pressure causing the reinforced and unreinforced regions to expand substantially simultaneously. Upon inflation of the balloon beyond the first pressure, the reinforced region of the balloon remains at the first diameter and the unreinforced region continues to expand, e.g., to flare one or more ends of the prosthesis.Type: ApplicationFiled: November 11, 2019Publication date: March 12, 2020Inventors: Yi Yang, Jake Wolenberg, Archimedes Sanati, Fred H. Co, Farhad Khosravi
-
Patent number: 10512455Abstract: Apparatus and methods for sealing a puncture through tissue includes an introducer sheath sized for introduction into a puncture, cartridge sized for insertion into the introducer carrying a sealant, and a locking element for coupling the introducer sheath to the cartridge. When the cartridge is advanced into the introducer sheath, the locking element couples the introducer sheath to the cartridge such that subsequent retraction of the cartridge causes the introducer sheath to retract, thereby deploying the sealant from the cartridge within the puncture beyond the introducer sheath.Type: GrantFiled: May 13, 2016Date of Patent: December 24, 2019Assignee: Access Closure, Inc.Inventors: Celso J Bagaoisan, Sieu Duong, Fred H. Co, Juan Domingo
-
Patent number: 10470905Abstract: Apparatus and methods are provided for flaring a stent deployed within a branch vessel including an ostium communicating with a main vessel, a first end of the stent extending at least partially from the branch. A catheter is provided that includes a balloon having a reinforced region adjacent an unreinforced region. When the balloon is positioned at a desired location, e.g., within a stent, prosthetic valve, or other tubular prosthesis, the balloon may be inflated to a first pressure causing the reinforced and unreinforced regions to expand substantially simultaneously. Upon inflation of the balloon beyond the first pressure, the reinforced region of the balloon remains at the first diameter and the unreinforced region continues to expand, e.g., to flare one or more ends of the prosthesis.Type: GrantFiled: March 27, 2017Date of Patent: November 12, 2019Assignee: OSTIAL CORPORATIONInventors: Yi Yang, Jake Wolenberg, Archimedes Sanati, Fred H. Co, Farhad Khosravi
-
Publication number: 20180214289Abstract: Apparatus and methods are provided for flaring a stent deployed within a branch vessel including an ostium communicating with a main vessel, a first end of the stent extending at least partially from the branch. A catheter is provided that includes a balloon having a reinforced region adjacent an unreinforced region. When the balloon is positioned at a desired location, e.g., within a stent, prosthetic valve, or other tubular prosthesis, the balloon may be inflated to a first pressure causing the reinforced and unreinforced regions to expand substantially simultaneously. Upon inflation of the balloon beyond the first pressure, the reinforced region of the balloon remains at the first diameter and the unreinforced region continues to expand, e.g., to flare one or more ends of the prosthesis.Type: ApplicationFiled: March 27, 2017Publication date: August 2, 2018Inventors: Yi Yang, Jake Wolenberg, Archimedes Sanati, Fred H. Co, Farhad Khosravi
-
Publication number: 20160324511Abstract: Apparatus and methods for sealing a puncture through tissue includes an introducer sheath sized for introduction into a puncture, cartridge sized for insertion into the introducer carrying a sealant, and a locking element for coupling the introducer sheath to the cartridge. When the cartridge is advanced into the introducer sheath, the locking element couples the introducer sheath to the cartridge such that subsequent retraction of the cartridge causes the introducer sheath to retract, thereby deploying the sealant from the cartridge within the puncture beyond the introducer sheath.Type: ApplicationFiled: May 13, 2016Publication date: November 10, 2016Applicant: Access Closure, Inc.Inventors: Celso J. Bagaoisan, Sieu Duong, Fred H. Co, Juan Domingo
-
Patent number: 9364206Abstract: Apparatus and methods for sealing a puncture through tissue includes an introducer sheath sized for introduction into a puncture, cartridge sized for insertion into the introducer carrying a sealant, and a locking element for coupling the introducer sheath to the cartridge. When the cartridge is advanced into the introducer sheath, the locking element couples the introducer sheath to the cartridge such that subsequent retraction of the cartridge causes the introducer sheath to retract, thereby deploying the sealant from the cartridge within the puncture beyond the introducer sheath.Type: GrantFiled: October 3, 2011Date of Patent: June 14, 2016Assignee: Access Closure, Inc.Inventors: Celso J. Bagaoisan, Sieu Duong, Fred H. Co, Juan Domingo
-
Publication number: 20140341836Abstract: Methods are provided for making freeze dried hydrogel and structures therefrom that may be introduced into a patient's body for medical applications. Precursor components are combined to initiate crosslinking. The combined precursor components are placed in a chilled tray, and allowed to crosslink to a desired level of complete crosslinking before and/or after being placed onto the tray. The partially crosslinked hydrogel is frozen and freeze dried. After freeze drying, the hydrogel is conditioned to substantially complete crosslinking, and formed into one or more structures, e.g., plugs, hemostatic, or other medical devices. For example, the hydrogel may be cut, machined, rolled, folded, compressed, and/or cored into that may be loaded into delivery devices that may be introduced into a body to implant or otherwise deliver the structures into the body, e.g., to seal a puncture or other passage through tissue.Type: ApplicationFiled: July 9, 2014Publication date: November 20, 2014Inventors: Amarpreet S. Sawhney, Steven L. Bennett, Suresh S. Pai, Scott R. Sershen, Fred H. Co
-
Patent number: 8795709Abstract: Methods are provided for making freeze dried hydrogel and structures therefrom that may be introduced into a patient's body for medical applications. Precursor components are combined to initiate crosslinking. The combined precursor components are placed in a chilled tray, and allowed to crosslink to a desired level of complete crosslinking before and/or after being placed onto the tray. The partially crosslinked hydrogel is frozen and freeze dried. After freeze drying, the hydrogel is conditioned to substantially complete crosslinking, and formed into one or more structures, e.g., plugs, hemostatic, or other medical devices. For example, the hydrogel may be cut, machined, rolled, folded, compressed, and/or cored into that may be loaded into delivery devices that may be introduced into a body to implant or otherwise deliver the structures into the body, e.g., to seal a puncture or other passage through tissue.Type: GrantFiled: August 18, 2006Date of Patent: August 5, 2014Assignee: Incept LLCInventors: Amarpreet S. Sawhney, Steven L. Bennett, Suresh S. Pai, Scott R. Sershen, Fred H. Co
-
Publication number: 20120053621Abstract: Apparatus and methods for sealing a puncture through tissue includes an introducer sheath sized for introduction into a puncture, cartridge sized for insertion into the introducer carrying a sealant, and a locking element for coupling the introducer sheath to the cartridge. When the cartridge is advanced into the introducer sheath, the locking element couples the introducer sheath to the cartridge such that subsequent retraction of the cartridge causes the introducer sheath to retract, thereby deploying the sealant from the cartridge within the puncture beyond the introducer sheath.Type: ApplicationFiled: October 3, 2011Publication date: March 1, 2012Applicant: ACCESSCLOSURE, INC.Inventors: Celso J. Bagaoisan, Sieu Duong, Fred H. Co, Juan Domingo
-
Patent number: 8016820Abstract: An instrument and method are provided for sealing and joining or hemostatically dividing tissue, which is particularly suitable for laparoscopic and endoscopic surgery. The instrument makes use of the controlled application of a combination of heat and pressure to seal adjacent tissues, to join adjacent tissues, or to anastomose tissues, whereby tissue is heated for an optimal time and at an optimal temperature under optimal pressure to maximize tissue seal strength while minimizing collateral tissue damage. The instrument of the present invention is lightweight and therefore portable, and is particularly useful in field conditions where a source of external power may not be readily available.Type: GrantFiled: May 29, 2009Date of Patent: September 13, 2011Assignee: The Trustees of Columbia University in the City of New YorkInventors: Michael R. Treat, Fred H. Co, George D. Hermann, Thomas A. Howell, Theodore R. Kucklick, Michelle Y. Monfort, Kenneth H. Mollenauer
-
Patent number: 7993367Abstract: Apparatus and methods for sealing a puncture through tissue includes an introducer sheath sized for introduction into a puncture, cartridge sized for insertion into the introducer carrying a sealant, and a locking element for coupling the introducer sheath to the cartridge. When the cartridge is advanced into the introducer sheath, the locking element couples the introducer sheath to the cartridge such that subsequent retraction of the cartridge causes the introducer sheath to retract, thereby deploying the sealant from the cartridge within the puncture beyond the introducer sheath.Type: GrantFiled: September 28, 2007Date of Patent: August 9, 2011Assignee: Accessclosure, Inc.Inventors: Celso J. Bagaoisan, Sieu Duong, Fred H. Co, Juan Domingo
-
Publication number: 20100305602Abstract: Balloon loaded dissection devices and methods for using such devices are disclosed. One such device includes an elongate shaft having sufficient rigidity to push through body tissue free of naturally occurring openings in the body tissue alongside an elongate structure, a handle operably mounted on an end of the elongate shaft, an elongate balloon capable of assuming deflated and inflated states on the elongate shaft, and a fluid passageway in communication with the inflatable interior space in the elongate balloon for communicating an inflation fluid to the elongate balloon. The handle includes a receptacle configured to releasably receive an instrument. The receptacle defines an elongated slot laterally spaced from the elongated shaft. The elongate balloon includes an axial length substantially greater than a transverse diameter of the elongate balloon when the elongate balloon is in the inflated state. The balloon defines an inflatable interior space into which a fluid is introduced to inflate the balloon.Type: ApplicationFiled: June 14, 2010Publication date: December 2, 2010Inventors: George D. Hermann, Fred H. Co, Douglas S. Sutton
-
Patent number: 7749241Abstract: Balloon loaded dissection devices and methods for using such devices are disclosed. The devices include an elongate balloon and may be provided with a central lumen. The device may have a guide tube to provide columnar support. In a further aspect, the guide tube may have a spoon-shaped shroud attached to a distal end. The guide tube receives the guide rod, scope or other surgical instrument and may have a stop member. By using the guide rod or scope as a pushing member, the device may be advanced alongside the vessel it is desired to dissect free from attached tissue. A balloon cover may be provided to surround the balloon and facilitate compression of the balloon after it is deflated. In an additional feature, the guide rod and/or tubular member are plastically bendable into a curved shape such that the balloon dissector may be adjusted.Type: GrantFiled: October 31, 2005Date of Patent: July 6, 2010Assignee: General Surgical Innovations, Inc.Inventors: George D. Hermann, Fred H. Co, Douglas S. Sutton