Patents by Inventor Clifford Liu
Clifford Liu 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: 20240108862Abstract: Systems and methods for a multi-layered peel-away sheath assembly for insertion of a blood pump, the peel-away sheath assembly including a sheath hub and a sheath body having a proximal end that is connected to the sheath hub, and a distal end. The sheath body comprises multiple layers including a reinforcing layer. The reinforcing layer improves flexibility and kink resistance of the assembly The reinforcing layer can comprise LCP, PEBAX, stainless steel, Nitinol, or Kevlar. The reinforcing layer may be a laser-cut hypotube or a braided or coiled filament. A first layer material and a third layer material are thermoplastics, including PEBAX or TPU. The reinforcing layer has at least one discontinuity, which is aligned with peel-away lines in the sheath body to allow an operator to peel-away the assembly. The peel-away lines are formed of inner notches, outer notches, or both. The sheath hub also includes a discontinuity to allow the sheath hub to peel-away.Type: ApplicationFiled: September 19, 2023Publication date: April 4, 2024Inventors: Christopher Nason Korkuch, Glen Fantuzzi, Drew Calabrese, Clifford Liu, John Modlish
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Patent number: 11793977Abstract: Systems and methods for a multi-layered peel-away sheath assembly for insertion of a blood pump, the peel-away sheath assembly including a sheath hub and a sheath body having a proximal end that is connected to the sheath hub, and a distal end. The sheath body comprises multiple layers including a reinforcing layer. The reinforcing layer improves flexibility and kink resistance of the assembly. The reinforcing layer can comprise LCP, PEBAX, stainless steel, Nitinol, or Kevlar. The reinforcing layer may be a laser-cut hypotube or a braided or coiled filament. A first layer material and a third layer material are thermoplastics, including PEBAX or TPU. The reinforcing layer has at least one discontinuity, which is aligned with peel-away lines in the sheath body to allow an operator to peel-away the assembly. The peel-away lines are formed of inner notches, outer notches, or both inner notches and outer notches. The sheath hub also includes a discontinuity to allow the sheath hub to peel-away.Type: GrantFiled: May 16, 2019Date of Patent: October 24, 2023Assignee: ABIOMED, INC.Inventors: Christopher Nason Korkuch, Glen Fantuzzi, Drew Calabrese, Clifford Liu, John Modlish
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Publication number: 20190351194Abstract: Systems and methods for a multi-layered peel-away sheath assembly for insertion of a blood pump including a sheath hub and a sheath body having a proximal end that is connected to the sheath hub, and a distal end. The sheath body comprises multiple layers including a reinforcing layer. The reinforcing layer improves flexibility and kink resistance of the assembly The reinforcing layer can comprise LCP, PEBAX, stainless steel, Nitinol, or Kevlar. The reinforcing layer may be a laser-cut hypotube or a braided or coiled filament. The first layer material and the third layer material are thermoplastics, including PEBAX or TPU. The reinforcing layer has at least one discontinuity, which is aligned with peel-away lines in the sheath body to allow an operator to peel-away the assembly. The peel-away lines are formed of inner, outer notches, or both. The sheath hub also includes a discontinuity to allow the sheath hub to peel-away.Type: ApplicationFiled: May 16, 2019Publication date: November 21, 2019Inventors: Christopher Nason Korkuch, Glen Fantuzzi, Drew Calabrese, Clifford Liu, John Modlish
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Publication number: 20170105795Abstract: Devices and methods are provided for performing an ablation procedure on tissue with flow monitoring using flow sensors. The devices include a catheter, and at least one flow sensor disposed on the catheter, and a component for applying the ablation procedure. An assessment module provides an indication of the efficacy of the ablation procedure based on the flow measurement from the flow sensor.Type: ApplicationFiled: December 19, 2016Publication date: April 20, 2017Inventors: Stephen P. Lee, Clifford Liu, Roozbeh Ghaffari, John Work, Fernando Quivira, Lauren E. Klinker, Yung-Yu Hsu
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Patent number: 9554850Abstract: Devices and methods are provided for performing an ablation procedure on tissue with flow monitoring using flow sensors. The devices include a catheter, and at least one flow sensor disposed on the catheter, and a component for applying the ablation procedure. An assessment module provides an indication of the efficacy of the ablation procedure based on the flow measurement from the flow sensor.Type: GrantFiled: October 2, 2015Date of Patent: January 31, 2017Assignee: MC10, Inc.Inventors: Stephen P. Lee, Clifford Liu, Roozbeh Ghaffari, John Work, Fernando Quivira, Lauren E. Klinker, Yung-Yu Hsu
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Publication number: 20160095652Abstract: Devices and methods are provided for performing an ablation procedure on tissue with flow monitoring using flow sensors. The devices include a catheter, and at least one flow sensor disposed on the catheter, and a component for applying the ablation procedure. An assessment module provides an indication of the efficacy of the ablation procedure based on the flow measurement from the flow sensor.Type: ApplicationFiled: October 2, 2015Publication date: April 7, 2016Inventors: Stephen P. Lee, Clifford Liu, Roozbeh Ghaffari, John Work, Fernando Quivira, Lauren E. Klinker, Yung-Yu Hsu
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Patent number: 9168094Abstract: Devices and methods are provided for performing an ablation procedure on tissue with flow monitoring using flow sensors. The devices include a catheter, and at least one flow sensor disposed on the catheter, and a component for applying the ablation procedure. An assessment module provides an indication of the efficacy of the ablation procedure based on the flow measurement from the flow sensor.Type: GrantFiled: March 15, 2013Date of Patent: October 27, 2015Assignee: MC10, Inc.Inventors: Stephen P. Lee, Clifford Liu, Roozbeh Ghaffari, John Work, Fernando Quivira, Lauren E. Klinker, Yung-Yu Hsu
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Patent number: 7104983Abstract: A medical device is provided which comprises a suction conduit and an energy-transmitting conduit wherein at least some of the transmitted energy is directed to the distal region of the suction conduit. The device may include an optical apparatus for directing the energy. The device has applications in lithotripsy and tissue-removal in a patient.Type: GrantFiled: March 16, 2004Date of Patent: September 12, 2006Assignee: Boston Scientific Scimed, Inc.Inventors: Michael Grasso, III, Douglas Goodshall, Clifford Liu, Anthony Tremaglio, George Bourne
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Publication number: 20050215980Abstract: A medical device for draining fluid from the body of a patient comprises an elongate member that defines a lumen and includes a proximal end and a distal portion. The device further comprises a dilating member disposed in the distal portion of the elongate member. The dilating member comprises a plurality of arms movable from a collapsed state to an expanded state in which the arms protrude radially to anchor the device within the body of the patient. The device includes a tension member that extends through the lumen to the dilating member and couples to the plurality of arms. Application of tension to the tension member causes the arms to move to the collapsed state thereby permitting insertion and removal of the device into and from the body of the patient. Some embodiments include a tension control member disposed at the proximal end of the elongate member and movable in at least a first direction and a second direction to increase and decrease tension to one or more tension members.Type: ApplicationFiled: April 8, 2005Publication date: September 29, 2005Inventor: Clifford Liu
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Publication number: 20050049570Abstract: An apparatus and method for access to the inside of a body includes a transparent sheath with a radiopaque marking and fastener for securing a guidewire or catheter. The transparent sheath permits objects located within and near the sheath to be visualized with an external imaging system. Objects located near the sheath can also be observed with an imaging device disposed inside the sheath. The radiopaque marker permits accurate positioning of the sheath in the body. The sheath can be inserted into the body over an interventional device. A fastener prevents migration of a guidewire or catheter during the procedure.Type: ApplicationFiled: September 27, 2004Publication date: March 3, 2005Inventors: Yem Chin, Clifford Liu, Benjamin Bottcher, John Adams
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Publication number: 20040243123Abstract: A medical device is provided which comprises a suction conduit and an energy-transmitting conduit wherein at least some of the transmitted energy is directed to the distal region of the suction conduit. The device may include an optical apparatus for directing the energy. The device has applications in lithotripsy and tissue-removal in a patient.Type: ApplicationFiled: March 16, 2004Publication date: December 2, 2004Applicant: SCIMED Life Systems, Inc.Inventors: Michael Grasso, Douglas Goodshall, Clifford Liu, Anthony Tremaglio, George Bourne
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Patent number: 6726681Abstract: A medical device is provided which comprises a suction conduit and an energy-transmitting conduit wherein at least some of the transmitted energy is directed to the distal region of the suction conduit. The device may include an optical apparatus for directing the energy. The device has applications in lithotripsy and tissue-removal in a patient.Type: GrantFiled: March 15, 2002Date of Patent: April 27, 2004Assignee: SciMed Life Systems, Inc.Inventors: Michael Grasso, III, Douglas Goodshall, Clifford Liu, Anthony Tremaglio
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Publication number: 20020103477Abstract: A medical device is provided which comprises a suction conduit and an energy-transmitting conduit wherein at least some of the transmitted energy is directed to the distal region of the suction conduit. The device may include an optical apparatus for directing the energy. The device has applications in lithotripsy and tissue-removal in a patient.Type: ApplicationFiled: March 15, 2002Publication date: August 1, 2002Inventors: Michael Grasso, Douglas Goodshall, Clifford Liu, Anthony Tremaglio
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Patent number: 6375651Abstract: A medical device is provided which includes a suction conduit and an energy-transmitting conduit wherein at least some of the transmitted energy is directed to the distal region of the suction conduit. The device may include an optical apparatus for directing the energy. The device has applications in lithotripsy and tissue-removal in a patient.Type: GrantFiled: February 18, 2000Date of Patent: April 23, 2002Assignee: Scimed Life Systems, Inc.Inventors: Michael Grasso, III, Douglas Goodshall, Clifford Liu, Anthony Tremaglio, George Bourne
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Publication number: 20020002366Abstract: A medical device is provided which comprises a suction conduit and an energy-transmitting conduit wherein at least some of the transmitted energy is directed to the distal region of the suction conduit. The device may include an optical apparatus for directing the energy. The device has applications in lithotripsy and tissue-removal in a patient.Type: ApplicationFiled: February 18, 2000Publication date: January 3, 2002Inventors: Michael Grasso, Douglas Godshall, Clifford Liu, Anthony Tremaglio, George Bourne