Patents by Inventor Lex P. Jansen

Lex P. Jansen 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: 10092315
    Abstract: Systems and methods for accessing the spine include tissue penetrating members with direct visualization capability that may be used to form an access pathway to a targeted treatment site. The direct visualization capability, which may be provided by fiberoptic illumination and imaging components, may be use to visualize the tissue as the access pathway is formed by the tissue penetrating member. The tissue penetrating members include catheters and cannulas with sharpened tips with integrated fiberoptic components and/or channels in which a fiberscope or miniscope may be inserted. Apertures and/or transparent materials are provided to permit imaging of tissue about the distal end of the tissue penetrating member.
    Type: Grant
    Filed: July 27, 2009
    Date of Patent: October 9, 2018
    Assignee: Expanding Innovations, Inc.
    Inventors: Lex P. Jansen, Singfatt Chin, John T. To
  • Patent number: 9962170
    Abstract: Systems and methods for treating spinal stenosis include endoscopic access devices and bone removal devices used to perform a foraminotomy or other bone removal procedures. Some of the bone removal devices include expandable members which may be used to control the forced exerted and/or position of the bone removal mechanism, and to protect neurovascular structures and other soft tissue structures from the bone removal mechanism. Other bone removal devices include a trephine with a viewing window and a guide wire lumen used to position the trephine at a target tissue site using an anchored wire. The viewing window may be used to monitor structures or tissues adjacent to the target tissue site.
    Type: Grant
    Filed: November 23, 2010
    Date of Patent: May 8, 2018
    Assignee: Spine View, Inc.
    Inventors: Lex P. Jansen, John W. Davis, John T. To, Singfatt Chin, Myra I. L. Fabro
  • Publication number: 20160095503
    Abstract: Systems and methods for treating spinal stenosis include endoscopic access devices and bone removal devices used to perform a foraminotomy or other bone removal procedures. A bone removal device includes a cannulotome with an endoscopic imaging lumen. Optionally, an endoscope retaining device can be used to facilitate advancement of the endoscope through the cannulotome.
    Type: Application
    Filed: June 8, 2015
    Publication date: April 7, 2016
    Applicant: SPINE VIEW, INC.
    Inventors: John Davis, John To, Lex P. Jansen, Stewart Kume, Wendy Twardzik
  • Publication number: 20150342450
    Abstract: Systems and methods for treating spinal stenosis include endoscopic access devices and bone removal devices used to perform a foraminotomy or other bone removal procedures. A bone removal device includes a cannulotome with an endoscopic imaging lumen. Optionally, an endoscope retaining device can be used to facilitate advancement of the endoscope through the cannulotome.
    Type: Application
    Filed: January 30, 2015
    Publication date: December 3, 2015
    Applicant: Spine View, Inc.
    Inventors: John Davis, John To, Lex P. Jansen, Stewart Kume, Wendy Twardzik
  • Patent number: 9049986
    Abstract: Systems and methods for treating spinal stenosis include endoscopic access devices and bone removal devices used to perform a foraminotomy or other bone removal procedures. A bone removal device includes a cannulotome with an endoscopic imaging lumen. Optionally, an endoscope retaining device can be used to facilitate advancement of the endoscope through the cannulotome.
    Type: Grant
    Filed: September 20, 2011
    Date of Patent: June 9, 2015
    Assignee: Spine View, Inc.
    Inventors: Lex P. Jansen, John T. To, John W. Davis, Stewart M. Kume, Wendy Twardzik
  • Patent number: 8973239
    Abstract: An intravascular balloon catheter having an ultra soft tip. The catheter includes a braided reinforcement member extending substantially the length of the elongate shaft. A balloon is disposed at the distal end of the elongate shaft. An ultra soft tip is formed from a distal portion of balloon material extending distal of the distal end of the elongate shaft.
    Type: Grant
    Filed: October 18, 2010
    Date of Patent: March 10, 2015
    Assignee: Boston Scientific Scimed, Inc.
    Inventors: Stephen Griffin, Huey Quoc Chan, Elaine Lim, Lex P. Jansen, Anthony F. Tassoni, Jr.
  • Patent number: 8926620
    Abstract: In some embodiments, an apparatus includes an elongated member, an expandable member coupled to the elongated member, and an outer sheath. The outer sheath, which can be constructed from a different material than the expandable member, is disposed about the expandable member such that an outer surface of the expandable member is in discontinuous contact with an inner surface of the outer sheath. The expandable member and the outer sheath are configured to cooperatively displace a bone structure when moving between a collapsed configuration and an expanded configuration.
    Type: Grant
    Filed: September 28, 2011
    Date of Patent: January 6, 2015
    Assignee: Kyphon Sarl
    Inventors: Nishith Chasmawala, Bryan J. Auyoung, Gorman D. Gong, Alex Y. Hsia, Lex P. Jansen, Christopher U. Phan
  • Publication number: 20140336621
    Abstract: A catheter comprising an elongate tubular member having a proximal end, a distal end, and a passageway defining a lumen extending between the proximal and distal ends. The elongate tubular member comprises a relatively stiff proximal section and a relatively flexible distal section. The proximal section includes an inner tubular liner, a first stiffener comprising a metal alloy, and a second stiffener comprising a non-metal alloy. The first and second stiffeners are coaxially wound exterior to the proximal inner liner. The distal section includes a distal inner tubular liner and the second stiffener coaxially wound exterior to the distal inner liner. The first stiffener terminates before reaching the distal section.
    Type: Application
    Filed: July 25, 2014
    Publication date: November 13, 2014
    Inventors: Lex P. Jansen, Thomas Yung-Hui Chien, Perry A. Fukui, Jeffrey A. Sarge, Lawrence C. Alpert
  • Patent number: 8795255
    Abstract: A catheter comprising an elongate tubular member having a proximal end, a distal end, and a passageway defining a lumen extending between the proximal and distal ends. The elongate tubular member comprises a relatively stiff proximal section and a relatively flexible distal section. The proximal section includes an inner tubular liner, a first stiffener comprising a metal alloy, and a second stiffener comprising a non-metal alloy. The first and second stiffeners are coaxially wound exterior to the proximal inner liner. The distal section includes a distal inner tubular liner and the second stiffener coaxially wound exterior to the distal inner liner. The first stiffener terminates before reaching the distal section.
    Type: Grant
    Filed: November 12, 2012
    Date of Patent: August 5, 2014
    Assignee: Boston Scientific Scimed, Inc.
    Inventors: Lex P. Jansen, Thomas Yung-Hui Chien, Perry Alvin Fukui, Jeffrey A. Sarge, Lawrence Charles Alpert
  • Publication number: 20140155695
    Abstract: Systems and methods for treating spinal stenosis include endoscopic access devices and bone removal devices used to perform a foraminotomy or other bone removal procedures. A bone removal device includes a cannulotome with an endoscopic imaging lumen. Optionally, an endoscope retaining device can be used to facilitate advancement of the endoscope through the cannulotome.
    Type: Application
    Filed: February 10, 2014
    Publication date: June 5, 2014
    Applicant: SPINE VIEW, INC.
    Inventors: Lex P. Jansen, John To, John Davis, Stewart Kume, Wendy Twardzik
  • Patent number: 8647257
    Abstract: Systems and methods for treating spinal stenosis include endoscopic access devices and bone removal devices used to perform a foraminotomy or other bone removal procedures. A bone removal device includes a cannulotome with an endoscopic imaging lumen. Optionally, an endoscope retaining device can be used to facilitate advancement of the endoscope through the cannulotome.
    Type: Grant
    Filed: September 26, 2011
    Date of Patent: February 11, 2014
    Inventors: Lex P. Jansen, John T. To, John W. Davis, Stewart M. Kume, Wendy Twardzik
  • Patent number: 8317772
    Abstract: A catheter comprising an elongate tubular member having a proximal end, a distal end, and a passageway defining a lumen extending between the proximal and distal ends. The elongate tubular member comprises a relatively stiff proximal section and a relatively flexible distal section. The proximal section includes an inner tubular liner, a first stiffener comprising a metal alloy, and a second stiffener comprising a non-metal alloy. The first and second stiffeners are coaxially wound exterior to the proximal inner liner. The distal section includes a distal inner tubular liner and the second stiffener coaxially wound exterior to the distal inner liner. The first stiffener terminates before reaching the distal section.
    Type: Grant
    Filed: March 10, 2011
    Date of Patent: November 27, 2012
    Assignee: Target Therapeutics, Inc.
    Inventors: Lex P. Jansen, Thomas Yung-Hui Chien, Perry Alvin Fukui, Jeffrey A. Sarge, Lawrence Charles Alpert
  • Patent number: 8292945
    Abstract: A stent comprising a serpentine portion extending about the circumference of the stent, the serpentine portion having a first end and a second end, the serpentine portion having a plurality of turns at the first end and a plurality of turns at the second end and struts extending therebetween, at least one of the turns at the first end, at least one of the turns at the second end, at least one of the struts therebetween, or some combination thereof having a plurality of shaped recesses thereon.
    Type: Grant
    Filed: August 16, 2005
    Date of Patent: October 23, 2012
    Assignee: Boston Scientific Scimed, Inc.
    Inventors: Greg P. Welsh, Lex P. Jansen
  • Patent number: 8142463
    Abstract: Apparatuses and methods for accessing and disrupting a tissue are disclosed herein. In one embodiment, an apparatus includes a first elongate member having a tissue interaction portion disposed at a distal end of the first elongate member. The tissue interaction portion is configured to be inserted within a biological body. A second elongate member is movably disposed within a lumen defined by the first elongate member. The second elongate member has a threaded exterior surface. A drive motor is coupled to the first elongate member and coupled to the second elongate member. The drive motor is configured to rotate the first elongate member in a first direction and configured to rotate the second elongate member in a second direction opposite the first direction. The tissue interaction portion is configured to disrupt tissue when disposed into the biological body and when the first elongate member is rotated.
    Type: Grant
    Filed: March 13, 2009
    Date of Patent: March 27, 2012
    Assignee: Kyphon Sarl
    Inventors: Greg Arcenio, Lex P. Jansen
  • Publication number: 20120071714
    Abstract: Systems and methods for treating spinal stenosis include endoscopic access devices and bone removal devices used to perform a foraminotomy or other bone removal procedures. A bone removal device includes a cannulotome with an endoscopic imaging lumen. Optionally, an endoscope retaining device can be used to facilitate advancement of the endoscope through the cannulotome.
    Type: Application
    Filed: September 20, 2011
    Publication date: March 22, 2012
    Inventors: Lex P. JANSEN, John T. To, John W. Davis, Stewart M. Kume, Wendy Twardzik
  • Publication number: 20120022540
    Abstract: In some embodiments, an apparatus includes an elongated member, an expandable member coupled to the elongated member, and an outer sheath. The outer sheath, which can be constructed from a different material than the expandable member, is disposed about the expandable member such that an outer surface of the expandable member is in discontinuous contact with an inner surface of the outer sheath. The expandable member and the outer sheath are configured to cooperatively displace a bone structure when moving between a collapsed configuration and an expanded configuration.
    Type: Application
    Filed: September 28, 2011
    Publication date: January 26, 2012
    Applicant: Kyphon SÀRL
    Inventors: Nishith Chasmawala, Bryan J. Auyoung, Gorman Gong, Alex Hsia, Lex P. Jansen, Christopher U. Phan
  • Publication number: 20120016192
    Abstract: Systems and methods for treating spinal stenosis include endoscopic access devices and bone removal devices used to perform a foraminotomy or other bone removal procedures. A bone removal device includes a cannulotome with an endoscopic imaging lumen. Optionally, an endoscope retaining device can be used to facilitate advancement of the endoscope through the cannulotome.
    Type: Application
    Filed: September 26, 2011
    Publication date: January 19, 2012
    Inventors: Lex P. Jansen, John T. To, John W. Davis, Stewart M. Kume, Wendy Twardzik
  • Publication number: 20110288553
    Abstract: Systems and methods for treating spinal stenosis include endoscopic access devices and bone removal devices used to perform a foraminotomy or other bone removal procedures. Some of the bone removal devices include expandable members which may be used to control the forced exerted and/or position of the bone removal mechanism, and to protect neurovascular structures and other soft tissue structures from the bone removal mechanism. Other bone removal devices include a trephine with a viewing window and a guide wire lumen used to position the trephine at a target tissue site using an anchored wire. The viewing window may be used to monitor structures or tissues adjacent to the target tissue site.
    Type: Application
    Filed: November 23, 2010
    Publication date: November 24, 2011
    Applicant: Spine View, Inc.
    Inventors: Lex P. Jansen, John W. Davis, John T. To, Singfatt Chin, Myra I. L. Fabro
  • Patent number: 8043296
    Abstract: In some embodiments, an apparatus includes an elongated member, an expandable member coupled to the elongated member, and an outer sheath. The outer sheath, which can be constructed from a different material than the expandable member, is disposed about the expandable member such that an outer surface of the expandable member is in discontinuous contact with an inner surface of the outer sheath. The expandable member and the outer sheath are configured to cooperatively displace a bone structure when moving between a collapsed configuration and an expanded configuration.
    Type: Grant
    Filed: March 30, 2007
    Date of Patent: October 25, 2011
    Assignee: Kyphon SARL
    Inventors: Nishith Chasmawala, Bryan J. Auyoung, Gorman Gong, Alex Hsia, Lex P. Jansen, Christopher U. Phan
  • Publication number: 20110172643
    Abstract: A catheter comprising an elongate tubular member having a proximal end, a distal end, and a passageway defining a lumen extending between the proximal and distal ends. The elongate tubular member comprises a relatively stiff proximal section and a relatively flexible distal section. The proximal section includes an inner tubular liner, a first stiffener comprising a metal alloy, and a second stiffener comprising a non-metal alloy. The first and second stiffeners are coaxially wound exterior to the proximal inner liner. The distal section includes a distal inner tubular liner and the second stiffener coaxially wound exterior to the distal inner liner. The first stiffener terminates before reaching the distal section.
    Type: Application
    Filed: March 10, 2011
    Publication date: July 14, 2011
    Applicant: TARGET THERAPEUTICS, INC.
    Inventors: Lex P. Jansen, Thomas Yung-Hui Chien, Perry Alvin Fukui, Jeffrey A. Sarge, Lawrence Charles Alpert