Patents by Inventor Linus Hoi Che Leung
Linus Hoi Che Leung 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: 20230364397Abstract: A method and apparatus are disclosed for an elongated introducer assembly. The elongated introducer assembly is manipulated and positioned proximate to a puncture hole in a tissue wall. A distal tip and distal end are advanced through the puncture hole and a distal expansion portion is selectively positioned relative to the puncture hole. An outer sliding shaft is advanced relative to an inner shaft, causing radial expansion of the distal expansion portion and an increase in outer diameter of the elongated introducer assembly at the distal expansion portion. Expansion of the puncture hole occurs as a result of the distal expansion portion in an expanded configuration passing through or spanning the puncture hole.Type: ApplicationFiled: May 11, 2023Publication date: November 16, 2023Inventors: Christian Balkovec, Linus Hoi Che Leung
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Publication number: 20220355087Abstract: An apparatus is disclosed for an optimized transseptal procedure that reduces the number of devices that are used in order to minimize procedural time, complexity and cost. The apparatus comprises a hybrid dilator that comprises the combined functionality of a transseptal sheath and dilator assembly. The hybrid dilator comprises: a dilator shaft defining a lumen for receiving a crossing device therethrough, a distal tip having an outer diameter which tapers down to an outer diameter of the crossing device for providing a smooth transition and a hub coupled with a side arm coupled to the dilator shaft.Type: ApplicationFiled: July 21, 2022Publication date: November 10, 2022Inventors: Melanie Thompson Smith, Gareth Davies, Linus Hoi Che Leung
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Patent number: 11426565Abstract: A method and apparatus are disclosed for an optimized transseptal procedure for providing left heart access, that reduces the number of devices that are used in order to minimize procedural time, complexity and cost. The apparatus comprises a hybrid dilator that comprises the combined functionality of a transseptal sheath and dilator assembly. The hybrid dilator comprises: a dilator shaft defining a lumen for receiving a crossing device therethrough, the dilator shaft being structured to provide support for the crossing device when the crossing device is used to create a puncture in a tissue; and a distal tip having an outer diameter which tapers down to an outer diameter of the crossing device for providing a smooth transition between the crossing device and the distal tip when the crossing device is inserted through the lumen and protrudes beyond the distal tip.Type: GrantFiled: January 6, 2017Date of Patent: August 30, 2022Assignee: Boston Scientific Medical Device LimitedInventors: Melanie Thomspon Smith, Gareth Davies, Linus Hoi Che Leung
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Publication number: 20220151681Abstract: A method and apparatus are disclosed for an RF guidewire for applying RF energy to create a channel through a region of tissue within a patient's body. The RF guidewire is configured to have a hydrophilic coating disposed thereon to reduce friction to facilitate traversal through vasculature while maintaining its mechanical, electrical and thermal properties. The RF guidewire includes an electrode tip at a distal end of the guidewire for delivering the energy and an electrically insulative thermal shield between the electrode tip and electrical insulation for thermally protecting the electrical insulation from heat produced by delivering the energy. Some embodiments include electrical insulation inside of the electrically insulative thermal shield.Type: ApplicationFiled: January 13, 2022Publication date: May 19, 2022Inventors: Linus Hoi Che Leung, Mahban Samiee-Zafarghandy, Rund Abou-Marie, Taras Juzkiw, Gareth Davies, Maria Luk, Kelly Albert
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Publication number: 20220072275Abstract: An imaging marker for use with a catheter, the imaging marker comprising a plurality of segments including at least two stiff segments and at least one flexible segment, wherein for each pair of stiff segments, one of the flexible segments is located therebetween such that the flexible segment is operable to function as a hinge when the imaging marker is bent. In typical embodiments, the stiff segments are visible under a medical imaging system. In some embodiments, the stiff segments are comprised of a radiopaque material which is visible under an X-ray (fluoroscopy) imaging system.Type: ApplicationFiled: November 17, 2021Publication date: March 10, 2022Inventors: Linus Hoi Che Leung, John Paul Urbanski, Glenn Arnold
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Patent number: 11234761Abstract: A method and apparatus are disclosed for an RF guidewire for applying RF energy to create a channel through a region of tissue within a patient's body. The RF guidewire is configured to have a hydrophilic coating disposed thereon to reduce friction to facilitate traversal through vasculature while maintaining its mechanical, electrical and thermal properties.Type: GrantFiled: November 23, 2016Date of Patent: February 1, 2022Assignee: Baylis Medical Company Inc.Inventors: Linus Hoi Che Leung, Mahban Samiee-Zafarghandy, Rund Abou-Marie, Taras Juzkiw, Gareth Davies, Maria Luk, Kelly Albert
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Patent number: 11197978Abstract: An imaging marker for use with a catheter, the imaging marker comprising a plurality of segments including at least two stiff segments and at least one flexible segment, wherein for each pair of stiff segments, one of the flexible segments is located therebetween such that the flexible segment is operable to function as a hinge when the imaging marker is bent. In typical embodiments, the stiff segments are visible under a medical imaging system. In some embodiments, the stiff segments are comprised of a radiopaque material which is visible under an X-ray (fluoroscopy) imaging system.Type: GrantFiled: December 18, 2018Date of Patent: December 14, 2021Assignee: Baylis Medical Company Inc.Inventors: Linus Hoi Che Leung, John Paul Urbanski, Glenn Arnold
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Publication number: 20190255288Abstract: An imaging marker for use with a catheter, the imaging marker comprising a plurality of segments including at least two stiff segments and at least one flexible segment, wherein for each pair of stiff segments, one of the flexible segments is located therebetween such that the flexible segment is operable to function as a hinge when the imaging marker is bent. In typical embodiments, the stiff segments are visible under a medical imaging system. In some embodiments, the stiff segments are comprised of a radiopaque material which is visible under an X-ray (fluoroscopy) imaging system.Type: ApplicationFiled: December 18, 2018Publication date: August 22, 2019Inventors: Linus Hoi Che Leung, John Paul Urbanski, Glenn Arnold
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Publication number: 20190015644Abstract: A method and apparatus are disclosed for an optimized transseptal procedure for providing left heart access, that reduces the number of devices that are used in order to minimize procedural time, complexity and cost. The apparatus comprises a hybrid dilator that comprises the combined functionality of a transseptal sheath and dilator assembly. The hybrid dilator comprises: a dilator shaft defining a lumen for receiving a crossing device therethrough, the dilator shaft being structured to provide support for the crossing device when the crossing device is used to create a puncture in a tissue; and a distal tip having an outer diameter which tapers down to an outer diameter of the crossing device for providing a smooth transition between the crossing device and the distal tip when the crossing device is inserted through the lumen and protrudes beyond the distal tip.Type: ApplicationFiled: January 6, 2017Publication date: January 17, 2019Applicant: Baylis Medical Company Inc.Inventors: Melanie Thomspon Smith, Gareth Davies, Linus Hoi Che Leung
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Patent number: 10173033Abstract: An imaging marker for use with a catheter, the imaging marker comprising a plurality of segments including at least two stiff segments and at least one flexible segment, wherein for each pair of stiff segments, one of the flexible segments is located therebetween such that the flexible segment is operable to function as a hinge when the imaging marker is bent. In typical embodiments, the stiff segments are visible under a medical imaging system. In some embodiments, the stiff segments are comprised of a radiopaque material which is visible under an X-ray (fluoroscopy) imaging system.Type: GrantFiled: April 18, 2016Date of Patent: January 8, 2019Assignee: Baylis Medical Company Inc.Inventors: Linus Hoi Che Leung, John Paul Urbanski, Glenn Arnold
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Publication number: 20170071667Abstract: A method and apparatus are disclosed for an RF guidewire for applying RF energy to create a channel through a region of tissue within a patient's body. The RF guidewire is configured to have a hydrophilic coating disposed thereon to reduce friction to facilitate traversal through vasculature while maintaining its mechanical, electrical and thermal properties.Type: ApplicationFiled: November 23, 2016Publication date: March 16, 2017Inventors: Linus Hoi Che Leung, Mahban Samiee-Zafarghandy, Taras Juzkiw, Gareth Davies, Maria Luk, Kelly Albert
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Publication number: 20160303348Abstract: An imaging marker for use with a catheter, the imaging marker comprising a plurality of segments including at least two stiff segments and at least one flexible segment, wherein for each pair of stiff segments, one of the flexible segments is located therebetween such that the flexible segment is operable to function as a hinge when the imaging marker is bent. In typical embodiments, the stiff segments are visible under a medical imaging system. In some embodiments, the stiff segments are comprised of a radiopaque material which is visible under an X-ray (fluoroscopy) imaging system.Type: ApplicationFiled: April 18, 2016Publication date: October 20, 2016Inventors: Linus Hoi Che Leung, John Paul Urbanski, Glenn Arnold
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Patent number: D854154Type: GrantFiled: May 7, 2018Date of Patent: July 16, 2019Assignee: Baylis Medical Company Inc.Inventors: Oleksandr Barannyk, Jeffery Arnett, Lyndsay Stephenson, Linus Hoi Che Leung