Patents by Inventor Wai Hsueh
Wai Hsueh 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: 20230233805Abstract: A bi-directional steerable catheter adapted for delivery into a patient's vasculature. The pull wires which are used to tension the deflectable segment of the steerable catheter are wound in parallel around the axis of the steerable catheter on opposite sides of the steerable catheter.Type: ApplicationFiled: April 3, 2023Publication date: July 27, 2023Applicant: BioCardia, Inc.Inventors: Wai Hsueh, Ken Vien, James B. Ross
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Patent number: 11617859Abstract: A bi-directional steerable catheter adapted for delivery into a patient's vasculature. The pull wires which are used to tension the deflectable segment of the steerable catheter are wound in parallel around the axis of the steerable catheter on opposite sides of the steerable catheter.Type: GrantFiled: September 11, 2021Date of Patent: April 4, 2023Assignee: BioCardia, Inc.Inventors: Wai Hsueh, Ken Vien, James B. Ross
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Publication number: 20220305237Abstract: A needle-injection catheter includes a catheter body having a distal end, a proximal end, a stiff proximal portion, a flexible distal portion, and a delivery lumen extending therethrough. In a first embodiment, a straight injection needle extends coaxially from a distal tip of the flexible portion of the catheter body, and a plurality of penetration limiting elements positioned circumferentially about a base of the straight injection needle and configured to fold radially inwardly against a shaft of the needle when constrained in a tubular lumen and to extend radially outwardly when unconstrained. In a second embodiment, a helical needle extends from the distal tip of the flexible portion of the catheter body. The helical needle has at least one helical delivery lumen connected to receive an injectable substance from the delivery lumen of the catheter body.Type: ApplicationFiled: June 2, 2022Publication date: September 29, 2022Applicant: BioCardia, Inc.Inventors: Wai Hsueh, Olin Jay Palmer, Scott Comiso, James B. Ross, Ken Vien, Julio Argentieri, Peter Altman
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Publication number: 20220168544Abstract: A bi-directional steerable catheter adapted for delivery into a patient's vasculature. The pull wires which are used to tension the deflectable segment of the steerable catheter are wound in parallel around the axis of the steerable catheter on opposite sides of the steerable catheter.Type: ApplicationFiled: September 11, 2021Publication date: June 2, 2022Applicant: BioCardia, Inc.Inventors: Wai Hsueh, Ken Vien, James B. Ross
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Patent number: 11141568Abstract: A bi-directional steerable catheter adapted for delivery into a patient's vasculature. The pull wires which are used to tension the deflectable segment of the steerable catheter are wound in parallel around the axis of the steerable catheter on opposite sides of the steerable catheter.Type: GrantFiled: August 27, 2018Date of Patent: October 12, 2021Assignee: BioCardia, Inc.Inventors: Wai Hsueh, Ken Vien, James B. Ross
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Publication number: 20200398029Abstract: A needle-injection catheter includes a catheter body having a distal end, a proximal end, a stiff proximal portion, a flexible distal portion, and a delivery lumen extending therethrough. In a first embodiment, a straight injection needle extends coaxially from a distal tip of the flexible portion of the catheter body, and a plurality of penetration limiting elements positioned circumferentially about a base of the straight injection needle and configured to fold radially inwardly against a shaft of the needle when constrained in a tubular lumen and to extend radially outwardly when unconstrained. In a second embodiment, a helical needle extends from the distal tip of the flexible portion of the catheter body. The helical needle has at least one helical delivery lumen connected to receive an injectable substance from the delivery lumen of the catheter body.Type: ApplicationFiled: September 2, 2020Publication date: December 24, 2020Applicant: BioCardia, Inc.Inventors: Wai Hsueh, Olin Jay Palmer, Scott Comiso, James B. Ross, Ken Vien, Julio Argentieri, Peter Altman
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Patent number: 10780248Abstract: A needle-injection catheter includes a catheter body having a distal end, a proximal end, a stiff proximal portion, a flexible distal portion, and a delivery lumen extending therethrough. In a first embodiment, a straight injection needle extends coaxially from a distal tip of the flexible portion of the catheter body, and a plurality of penetration limiting elements positioned circumferentially about a base of the straight injection needle and configured to fold radially inwardly against a shaft of the needle when constrained in a tubular lumen and to extend radially outwardly when unconstrained. In a second embodiment, a helical needle extends from the distal tip of the flexible portion of the catheter body. The helical needle has at least one helical delivery lumen connected to receive an injectable substance from the delivery lumen of the catheter body.Type: GrantFiled: August 9, 2018Date of Patent: September 22, 2020Assignee: BioCardia, Inc.Inventors: Wai Hsueh, Olin Jay Palmer, Scott Comiso, James B. Ross, Ken Vien, Julio Argentieri, Peter Altman
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Publication number: 20190151614Abstract: A bi-directional steerable catheter adapted for delivery into a patient's vasculature. The pull wires which are used to tension the deflectable segment of the steerable catheter are wound in parallel around the axis of the steerable catheter on opposite sides of the steerable catheter.Type: ApplicationFiled: August 27, 2018Publication date: May 23, 2019Applicant: BioCardia, Inc.Inventors: Wai Hsueh, Ken Vien, James B. Ross
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Publication number: 20180344986Abstract: A needle-injection catheter includes a catheter body having a distal end, a proximal end, a stiff proximal portion, a flexible distal portion, and a delivery lumen extending therethrough. In a first embodiment, a straight injection needle extends coaxially from a distal tip of the flexible portion of the catheter body, and a plurality of penetration limiting elements positioned circumferentially about a base of the straight injection needle and configured to fold radially inwardly against a shaft of the needle when constrained in a tubular lumen and to extend radially outwardly when unconstrained. In a second embodiment, a helical needle extends from the distal tip of the flexible portion of the catheter body. The helical needle has at least one helical delivery lumen connected to receive an injectable substance from the delivery lumen of the catheter body.Type: ApplicationFiled: August 9, 2018Publication date: December 6, 2018Inventors: Wai Hsueh, Olin Jay Palmer, Scott Comiso, James B. Ross, Ken Vien, Julio Argentieri, Peter Altman
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Patent number: 10071226Abstract: A needle-injection catheter includes a catheter body having a distal end, a proximal end, a stiff proximal portion, a flexible distal portion, and a delivery lumen extending therethrough. In a first embodiment, a straight injection needle extends coaxially from a distal tip of the flexible portion of the catheter body, and a plurality of penetration limiting elements positioned circumferentially about a base of the straight injection needle and configured to fold radially inwardly against a shaft of the needle when constrained in a tubular lumen and to extend radially outwardly when unconstrained. In a second embodiment, a helical needle extends from the distal tip of the flexible portion of the catheter body. The helical needle has at least one helical delivery lumen connected to receive an injectable substance from the delivery lumen of the catheter body.Type: GrantFiled: September 30, 2014Date of Patent: September 11, 2018Assignee: BioCardia, Inc.Inventors: Wai Hsueh, Olin Jay Palmer, Scott Comiso, James B. Ross, Ken Vien, Julio Argentieri, Peter Altman
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Publication number: 20170106170Abstract: A bi-directional steerable catheter adapted for delivery into a patient's vasculature. The pull wires which are used to tension the deflectable segment of the steerable catheter are wound in parallel around the axis of the steerable catheter on opposite sides of the steerable catheter.Type: ApplicationFiled: October 19, 2015Publication date: April 20, 2017Applicant: BIOCARDIA, INC.Inventors: Wai Hsueh, Ken Vien, James B. Ross
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Publication number: 20150231368Abstract: A needle-injection catheter includes a catheter body having a distal end, a proximal end, a stiff proximal portion, a flexible distal portion, and a delivery lumen extending therethrough. In a first embodiment, a straight injection needle extends coaxially from a distal tip of the flexible portion of the catheter body, and a plurality of penetration limiting elements positioned circumferentially about a base of the straight injection needle and configured to fold radially inwardly against a shaft of the needle when constrained in a tubular lumen and to extend radially outwardly when unconstrained. In a second embodiment, a helical needle extends from the distal tip of the flexible portion of the catheter body. The helical needle has at least one helical delivery lumen connected to receive an injectable substance from the delivery lumen of the catheter body.Type: ApplicationFiled: September 30, 2014Publication date: August 20, 2015Applicant: BioCardia, Inc.Inventors: Wai Hsueh, Olin Jay Palmer, Scott Comiso, James B. Ross, Ken Vien, Julio Argentieri, Peter Altman