Patents by Inventor Brian Ma

Brian Ma 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).

  • Publication number: 20260315733
    Abstract: A sheath comprises an elongated shaft defining a major lumen along a longitudinal axis and has a distal section opposite a proximal section. The shaft includes a flexible circuit. The flexible circuit has a longitudinally extending electrically insulative substrate configured in a serpentine route, an electrically conductive lead trace disposed on the electrically insulative substrate along the serpentine route, and an electrode exposed on a radially outward surface of the shaft in the distal section and electrically coupled to the lead trace. The flexible circuit extends from the proximal section to the distal section of the shaft.
    Type: Application
    Filed: April 9, 2026
    Publication date: October 15, 2026
    Inventors: Esme Bonnell, Miles Montgomery, Brian Ma, Miriam Lutes, Luke Keaveney, Jastyn Balasubramaniam
  • Publication number: 20260306819
    Abstract: A protecting and guiding system for a hemostasis valve includes a hub having a distal end and a proximal end opposite the distal end. A hollow chamber extends between the distal end and the proximal end of the hub. A hemostasis valve is positioned within the hollow chamber. The hemostasis valve is configured to receive a medical device and to prevent fluid from escaping from the hollow chamber. A guide plate is positioned proximal of the hemostasis valve. The guide plate is configured to guide the medical device towards a center of the hemostasis valve to protect the hemostasis valve from damage. A cap is configured to surround a portion of the hub to secure the hemostasis valve and the guide plate within the hollow chamber.
    Type: Application
    Filed: April 2, 2026
    Publication date: October 8, 2026
    Inventors: Foss Jiao, Brian Ma, Mahban Samiee-Zafarghandy, Asher Lai, Yan Yue
  • Publication number: 20260115413
    Abstract: A catheter comprising an elongated shaft defining a lumen and having a distal portion is disclosed. The elongated shaft includes an elongated support member coaxial with the lumen. The support member has a distal end. A pull ring assembly including a pull ring and a pull wire. The pull ring is disposed on the shaft at the distal portion, and the pull wire is attached to the pull ring and extends proximally along the shaft. The pull ring includes an outer surface, a pull ring distal end, and a pull ring proximal end. The support member is attached to the outer surface of the pull ring such that the distal end of the support member is disposed distal to the pull ring proximal end.
    Type: Application
    Filed: October 29, 2025
    Publication date: April 30, 2026
    Inventors: Brian Ma, Miles Montgomery, Jean-Olivier Normandeau, Yara Hosein, Ian Major, Kevin Martin
  • Publication number: 20250213298
    Abstract: Sheaths and method of manufacturing sheaths are disclosed. The sheath includes an elongated shaft defining a major lumen along a longitudinal axis and having a distal section opposite a proximal section. The shaft including a signal layer. The signal layer includes an electrically insulative substrate, an electrically conductive lead trace disposed on the electrically insulative substrate, and an interface pad exposed on a radially outward surface of the signal layer in the distal section and electrically coupled to the lead trace. The lead trace extends in a curvilinear serpentine route from the proximal section to the distal section. An electrode is exposed on the shaft and electrically coupled to the interface pad.
    Type: Application
    Filed: December 26, 2024
    Publication date: July 3, 2025
    Inventors: Jackie Leung, Matthew MacDonald, Prateek Mathur, Miles Montgomery, Doran Avivi, Brian Ma, Esme Bonnell
  • Patent number: 11235126
    Abstract: A method and apparatus are disclosed for a reinforced steerable sheath assembly that is usable with an actuator comprising a shaft section defining a sheath that is operable to be deflected, and one or more pull wires that are coupled to the sheath via a coupling at a point of contact between the pull wires and the sheath. The pull wires being operable to be coupled to the actuator for actuating the pull wires. The reinforced steerable sheath assembly further comprises a means for preventing displacement of the coupling, wherein the means for preventing displacement to minimize failure at the coupling at the point of contact between the pull wires and the sheath upon actuation of the pull wires upon actuation of the actuator to deflect the sheath.
    Type: Grant
    Filed: October 5, 2018
    Date of Patent: February 1, 2022
    Assignee: Baylis Medical Company Inc.
    Inventors: Ros Thomas Brannick, Brian Ma, Audrey Chan, Melanie Thompson Smith, Bei Ning (Alice) Zhang, Neil Godara, Jan-Hung Chen, Michael Froncioni, David Mulligan
  • Publication number: 20210001088
    Abstract: A method and apparatus are disclosed for a reinforced steerable sheath assembly that is usable with an actuator comprising a shaft section defining a sheath that is operable to be deflected, and one or more pull wires that are coupled to the sheath via a coupling at a point of contact between the pull wires and the sheath. The pull wires being operable to be coupled to the actuator for actuating the pull wires. The reinforced steerable sheath assembly further comprises a means for preventing displacement of the coupling, wherein the means for preventing displacement to minimize failure at the coupling at the point of contact between the pull wires and the sheath upon actuation of the pull wires upon actuation of the actuator to deflect the sheath.
    Type: Application
    Filed: October 5, 2018
    Publication date: January 7, 2021
    Inventors: Ros Thomas Brannick, Brian Ma, Audrey Chan, Melanie Thompson Smith, Bei Ning (Alice) Zhang, Neil Godara, Jan-Hung Chen, Michael Froncioni, David Mulligan
  • Patent number: 10524525
    Abstract: The present invention relates to bodysuits for use as personal protective equipment comprising a torso portion comprising a front side; a back side including a sealable port through which a wearer can enter and exit the bodysuit when donning or doffing the bodysuit, respectively; a waist region; a neck opening; a pair of upper limb openings; and a pair of lower limb openings; two arm portions each extending from one of the upper limb opening; and two leg portions each extending from one of the lower limb opening and methods for the removal of such body suits.
    Type: Grant
    Filed: December 14, 2015
    Date of Patent: January 7, 2020
    Assignee: The Johns Hopkins University
    Inventors: Youseph Yazdi, Melody Tan, Matthew Petney, William Alexander LeMay Patterson, Siavash Parkhideh, Jill Andrews, Patience Osei, Soumyadipta Acharya, Chandrakant Ruparelia, HarshadKumar Sanghvi, Timothy Patrick Harrigan, Nahyun Kate Cho, Qian Liu, Brandon Craft, Paul Fearis, Sami Messai, Brian Ma, Meagan Hawes, Reeve Ilse Heinis, Jason Onslow Leroy Johnson, Erin Reisfeld, Arjun Shailesh Vachhani, Timothy Campbell, Neil Rens, Madeleine Clegg, Elizabeth Anne Stokley, Jessica Jeang, Christopher Chiang, Willibrord Shasha, Bailey Topper, Kimberly Ashman, Michael Parlato
  • Publication number: 20190105467
    Abstract: A method and apparatus are disclosed for a modified tip for a sheath assembly that provides enhanced radiopacity while maintaining the distal tip profile to maintain adequate tip stiffness and tip transition force. The disclosed method and apparatus provide a distal tip segment for a sheath assembly comprising a region of increased wall thickness along a portion or section of the distal tip segment, providing increased cross-sectional area there-along to provide enhanced radiopacity, and a distal most section of the distal tip segment having a reduced or minimal profile to provide an atraumatic tip while maintaining sufficient stiffness for crossability. The distal tip segment is operable to be coupled to a proximal shaft portion of the sheath assembly, to provide enhanced radiopacity while maintaining the distal tip profile to maintain adequate tip stiffness.
    Type: Application
    Filed: October 11, 2018
    Publication date: April 11, 2019
    Inventors: Ros Thomas Brannick, Brian Ma, Audrey Man Yin Chan, Melanie Thompson Smith, Alice Zhang, Jan-Hung Chen
  • Publication number: 20160165973
    Abstract: The present invention relates to bodysuits for use as personal protective equipment comprising a torso portion comprising a front side; a back side including a sealable port through which a wearer can enter and exit the bodysuit when donning or doffing the bodysuit, respectively; a waist region; a neck opening; a pair of upper limb openings; and a pair of lower limb openings; two arm portions each extending from one of the upper limb opening; and two leg portions each extending from one of the lower limb opening and methods for the removal of such body suits.
    Type: Application
    Filed: December 14, 2015
    Publication date: June 16, 2016
    Inventors: Youseph Yazdi, Melody Tan, Matthew Petney, William Alexander LeMay, Siavash Parkideh, Jill Andrews, Patience Osei, Soumyadipta Acharya, Chandrakant Ruparelia, Sanghvi Harshad Kumar, Timothy Patrick Harrigan, Nahyun Kate Cho, Qian Liu, Brandon Craft, Paul Fearis, Sami Messai, Brian Ma, Megan Hawes, Reeve Ilse Heinis, Jason Onslow Leroy, Erin Reisfeld, Arjun Shailesh Vachhani, Timothy Campbell, Neil Rens, Madeleine Clegg, Elizabeth Anne Stokley, Jessica Jeang, Christopher Chiang, Willibrord Shasha, Bailey Topper, Kimber Ashman, Michael Parlato
  • Publication number: 20070185727
    Abstract: A facility procuring information about a distinguished property from a user knowledgeable about the distinguished property that is usable to refine an automatic valuation of the distinguished property is described. The facility displays information about the distinguished property used in the automatic valuation of the distinguished property. The facility obtains user input from of the user adjusting at least one aspect of information about the distinguished property used in the automatic valuation of the distinguished property. On a later the day, facility displays to the user a refined valuation of the distinguished property that is based on the adjustment of the obtained user input.
    Type: Application
    Filed: September 19, 2006
    Publication date: August 9, 2007
    Inventors: Brian Ma, Jonathan Burstein, Timothy Andersen