Patents by Inventor Jianlu Ma

Jianlu 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).

  • Patent number: 10709432
    Abstract: A left atrial appendage (LAA) closure device that includes an anchor portion having a first segment and a second segment that are connected in spaced-apart manner by a first connector, a sealing portion, and a second connector that connects the anchor portion and the second segment sealing portion. The first segment is adapted to be positioned outside the LAA and in the pericardial sac after deployment of the closure device, and the second segment is positioned between the first segment and the sealing portion inside the LAA.
    Type: Grant
    Filed: June 24, 2016
    Date of Patent: July 14, 2020
    Inventor: Jianlu Ma
  • Publication number: 20200113588
    Abstract: A clot retrieval device is provided. The clot retrieval device includes a capturing basket having an opening at a proximal end where the capturing basket is deployable downstream from a clot in a blood vessel. The capturing basket is configured to surround a portion of the clot and the opening in the proximal end of the capturing basket is configured to reduce in size such that the capturing basket conforms around the portion of the clot and be retrieved after the capturing basket conforms around the portion of the clot.
    Type: Application
    Filed: October 9, 2019
    Publication date: April 16, 2020
    Inventors: Sanjay Shrivastava, Jianlu Ma
  • Patent number: 10433992
    Abstract: An implant delivery system has one or more interlock assemblies which connect the implant delivery catheter to the implant, an improved inner tubular member and an outer tubular member. The interlock assemblies, improved inner tubular member and outer tubular member cooperate to place the implant in tension during deployment, thereby reducing implant deployment force.
    Type: Grant
    Filed: June 1, 2015
    Date of Patent: October 8, 2019
    Assignee: Covidien LP
    Inventors: Lixiao Wang, Jianlu Ma, Joe Tatalovich, Peggy Waltz, Keith Smythe, Richard Kusleika
  • Patent number: 10426605
    Abstract: A mitral valve replacement device is adapted to be deployed at a mitral valve position in a human heart. The device has an atrial flange defining an atrial end of the device, a ventricular portion defining a ventricular end of the device, the ventricular portion having a height ranging between 2 mm to 15 mm, and an annulus support that is positioned between the atrial flange and the ventricular portion. The annulus support includes a ring of anchors extending radially therefrom, with an annular clipping space defined between the atrial flange and the ring of anchors. A plurality of leaflet holders positioned at the atrial end of the atrial flange, and a plurality of valve leaflets secured to the leaflet holders, and positioned inside the atrial flange at a location above the native annulus.
    Type: Grant
    Filed: November 9, 2017
    Date of Patent: October 1, 2019
    Assignee: Sino Medical Sciences Technology, Inc.
    Inventors: Jianlu Ma, Yong Huo, Tianzhu Li, Jinhong Zhao, Jianxiang Ma, Lei Meng
  • Publication number: 20190069900
    Abstract: Described herein are flexible implantable devices or stents that can conform to the shape of vessels of the neurovasculature. In some embodiments, the devices can direct blood flow within a vessel away from an aneurysm or limit blood flow to the aneurysm. In some embodiments, a vascular remodeling device includes a first section and a protruding section. During deployment, the device expands from a compressed configuration to an expanded configuration. The first section anchors the device in an afferent vessel and/or in an efferent vessel of a bifurcation and the protruding section is positioned in the junction of the bifurcation having an aneurysm and across the neck of the aneurysm or at least partially within the aneurysm.
    Type: Application
    Filed: November 1, 2018
    Publication date: March 7, 2019
    Inventors: Anh Cam, Michael Louis Losordo, Jianlu Ma, Xiaoling Zhao
  • Patent number: 10188534
    Abstract: A stent for reducing the passage of emboli into body lumen once deployed includes a structural portion and a barrier portion. The structural portion, when expanded in a conduit, provides sufficient strength to maintain an open lumen in the conduit. The barrier portion reduces migration of emboli from the wall of the conduit through the structural portion and into the lumen. Stent delivery systems capable of delivering and deploying the stent are disclosed.
    Type: Grant
    Filed: November 14, 2007
    Date of Patent: January 29, 2019
    Assignee: Covidien LP
    Inventors: Doug Molland, Jianlu Ma, Joe Tatalovich, Jeff Vogel, Josh Dudney, Mark Vandlik, Richard Kusleika
  • Publication number: 20190000490
    Abstract: A clot removal device has an expandable treatment member having a distal tip and a proximal end, a delivery wire having a distal end coupled to the proximal end of the expandable treatment member, and a flow restrictor carried along the delivery wire at a location that is separate and proximal from the expandable treatment member. The flow restrictor has a body with a distal section and a proximal section, the distal section being covered and the proximal section being uncovered. The expandable treatment member is moveable relative to the flow restrictor, and can be retracted into the distal section.
    Type: Application
    Filed: September 6, 2018
    Publication date: January 3, 2019
    Applicant: NeuroVasc Technologies, Inc.
    Inventor: Jianlu Ma
  • Publication number: 20180344337
    Abstract: A clot removal device has a segment that has two main struts that serve as a frame for holding a plurality of secondary struts. Each of the two main struts has a proximal end that is connected at a proximal point of the segment and extends along a generally circumferential path, with each main strut terminating at a separate connecting point that is distal from the proximal point. The connecting points are connected to each other to form a generally tubular structure defining an inner lumen. The plurality of secondary struts forms a lattice of cells, with each cell surrounded by four secondary struts. Two generally straight distal struts are connected to the lattice of cells at a distal end of the segment, and are connected to each other to form a distal point. A distal opening is defined by the cells adjacent the distal struts, the distal opening communicating with the lumen and terminating at the proximal point.
    Type: Application
    Filed: May 29, 2018
    Publication date: December 6, 2018
    Applicant: NeuroVasc Technologies, Inc.
    Inventors: Michael Losordo, Jianlu Ma
  • Publication number: 20180325666
    Abstract: A method and device for treating mitral regurgitation includes providing a treatment device comprising an expandable frame, and a leaflet assembly housed inside the frame. The frame has a tenting element. The treatment device is delivered to the aortic position in a patient's aortic valve, and the frame is expanded at the location of the native aortic valve, with the tenting element pushing the aortic curtain and/or anterior leaflet and/or mitral annulus of the mitral valve towards the mitral valve direction. The leaflet assembly replaces the valve function of the patient's native aortic valve.
    Type: Application
    Filed: July 12, 2018
    Publication date: November 15, 2018
    Inventor: Jianlu Ma
  • Patent number: 10123804
    Abstract: Described herein are flexible implantable devices or stents that can conform to the shape of vessels of the neurovasculature. In some embodiments, the devices can direct blood flow within a vessel away from an aneurysm or limit blood flow to the aneurysm. In some embodiments, a vascular remodeling device includes a first section and a protruding section. During deployment, the device expands from a compressed configuration to an expanded configuration. The first section anchors the device in an afferent vessel and/or in an efferent vessel of a bifurcation and the protruding section is positioned in the junction of the bifurcation having an aneurysm and across the neck of the aneurysm or at least partially within the aneurysm.
    Type: Grant
    Filed: June 24, 2016
    Date of Patent: November 13, 2018
    Assignee: COVIDIEN LP
    Inventors: Anh Cam, Michael Losordo, Jianlu Ma, Xiaoling Zhao
  • Patent number: 10070878
    Abstract: A clot removal device has an expandable treatment member having a distal tip and a proximal end, a delivery wire having a distal end coupled to the proximal end of the expandable treatment member, and a flow restrictor carried along the delivery wire at a location that is separate and proximal from the expandable treatment member. The flow restrictor has a body with a distal section and a proximal section, the distal section being covered and the proximal section being uncovered. The expandable treatment member is moveable relative to the flow restrictor, and can be retracted into the distal section.
    Type: Grant
    Filed: February 15, 2017
    Date of Patent: September 11, 2018
    Assignee: NeuroVasc Technologies Inc.
    Inventor: Jianlu Ma
  • Patent number: 9993257
    Abstract: A clot removal device has a segment that has two main struts that serve as a frame for holding a plurality of secondary struts. Each of the two main struts has a proximal end that is connected at a proximal point of the segment and extends along a generally circumferential path, with each main strut terminating at a separate connecting point that is distal from the proximal point. The connecting points are connected to each other to form a generally tubular structure defining an inner lumen. The plurality of secondary struts forms a lattice of cells, with each cell surrounded by four secondary struts. Two generally straight distal struts are connected to the lattice of cells at a distal end of the segment, and are connected to each other to form a distal point. A distal opening is defined by the cells adjacent the distal struts, the distal opening communicating with the lumen and terminating at the proximal point.
    Type: Grant
    Filed: June 5, 2017
    Date of Patent: June 12, 2018
    Assignee: NeuroVarc Technologies Inc.
    Inventors: Michael Losordo, Jianlu Ma
  • Patent number: 9962164
    Abstract: An intraluminal device may be used at a bifurcation to anchor in an afferent vessel, allow perfusion to efferent vessels, and act as scaffolding to inhibit herniation of objects out of a neck of a bifurcation aneurysm. An intraluminal device may include a first side; a second side opposite the first side across a longitudinal axis of the intraluminal device; a proximal section configured to anchor in an afferent vessel; a distal section comprising a first wing and a second wing wherein, in an expanded state, the first wing extends from the first side to the second side and the second wing extends from the second side, through an opening of the first wing, and to the first side.
    Type: Grant
    Filed: October 21, 2015
    Date of Patent: May 8, 2018
    Assignee: Covidien LP
    Inventors: Michael Losordo, Jianlu Ma
  • Publication number: 20180103969
    Abstract: A clot removal device has an expandable treatment member having a distal tip and a proximal end, a delivery wire having a distal end coupled to the proximal end of the expandable treatment member, and a flow restrictor carried along the delivery wire at a location that is separate and proximal from the expandable treatment member. The flow restrictor has a body with a distal section and a proximal section, the distal section being covered and the proximal section being uncovered. The expandable treatment member is moveable relative to the flow restrictor, and can be retracted into the distal section.
    Type: Application
    Filed: February 15, 2017
    Publication date: April 19, 2018
    Applicant: NeuroVasc Technologies, Inc.
    Inventor: Jianlu Ma
  • Publication number: 20180071084
    Abstract: A mitral valve replacement device is adapted to be deployed at a mitral valve position in a human heart. The device has an atrial flange defining an atrial end of the device, a ventricular portion defining a ventricular end of the device, the ventricular portion having a height ranging between 2 mm to 15 mm, and an annulus support that is positioned between the atrial flange and the ventricular portion. The annulus support includes a ring of anchors extending radially therefrom, with an annular clipping space defined between the atrial flange and the ring of anchors. A plurality of leaflet holders positioned at the atrial end of the atrial flange, and a plurality of valve leaflets secured to the leaflet holders, and positioned inside the atrial flange at a location above the native annulus.
    Type: Application
    Filed: November 9, 2017
    Publication date: March 15, 2018
    Applicant: Sino Medical Sciences Technology, Inc.
    Inventors: Jianlu Ma, Yong Huo, Tianzhu Li, Jinhong Zhao, Jianxiang Ma, Lei Meng
  • Publication number: 20180064454
    Abstract: A clot removal device has a segment that has two main struts that serve as a frame for holding a plurality of secondary struts. Each of the two main struts has a proximal end that is connected at a proximal point of the segment and extends along a generally circumferential path, with each main strut terminating at a separate connecting point that is distal from the proximal point. The connecting points are connected to each other to form a generally tubular structure defining an inner lumen. The plurality of secondary struts forms a lattice of cells, with each cell surrounded by four secondary struts. Two generally straight distal struts are connected to the lattice of cells at a distal end of the segment, and are connected to each other to form a distal point. A distal opening is defined by the cells adjacent the distal struts, the distal opening communicating with the lumen and terminating at the proximal point.
    Type: Application
    Filed: June 5, 2017
    Publication date: March 8, 2018
    Applicant: NeuroVasc Technologies, Inc.
    Inventors: Michael Losordo, Jianlu Ma
  • Patent number: 9877856
    Abstract: A stent delivery device includes a first retaining polymer disposed about and retaining a self-expanding stent at a proximal end portion, a second retaining polymer disposed about and retaining the self-expanding stent at a distal end portion, a first resistance member in thermal communication with the first retaining polymer, and a second resistance member in thermal communication with the second retaining polymer. The second retaining polymer and second resistance member are configured to allow release and expansion of the distal end portion of the self-expanding stent without expansion of the proximal end portion of the self-expanding stent.
    Type: Grant
    Filed: October 9, 2015
    Date of Patent: January 30, 2018
    Assignee: Covidien LP
    Inventors: Jessica Liang, Jianlu Ma
  • Publication number: 20170360558
    Abstract: A method and device for treating mitral regurgitation includes providing a treatment device comprising an expandable frame, and a leaflet assembly housed inside the frame. The frame has a tenting element. The treatment device is delivered to the aortic position in a patient's aortic valve, and the frame is expanded at the location of the native aortic valve, with the tenting element pushing the aortic curtain and/or anterior leaflet and/or mitral annulus of the mitral valve towards the mitral valve direction. The leaflet assembly replaces the valve function of the patient's native aortic valve.
    Type: Application
    Filed: November 3, 2016
    Publication date: December 21, 2017
    Inventor: Jianlu Ma
  • Patent number: 9839511
    Abstract: A mitral valve replacement device is adapted to be deployed at a mitral valve position in a human heart. The device has an atrial flange defining an atrial end of the device, a ventricular portion defining a ventricular end of the device, the ventricular portion having a height ranging between 2 mm to 15 mm, and an annulus support that is positioned between the atrial flange and the ventricular portion. The annulus support includes a ring of anchors extending radially therefrom, with an annular clipping space defined between the atrial flange and the ring of anchors. A plurality of leaflet holders positioned at the atrial end of the atrial flange, and a plurality of valve leaflets secured to the leaflet holders, and positioned inside the atrial flange at a location above the native annulus.
    Type: Grant
    Filed: October 3, 2014
    Date of Patent: December 12, 2017
    Assignee: SINO MEDICAL SCIENCES TECHNOLOGY INC.
    Inventors: Jianlu Ma, Yong Huo, Tianzhu Li, Jinhong Zhao, Jianxiang Ma, Lei Meng
  • Patent number: 9808256
    Abstract: Detachment of a medical device from a delivery assembly can focus activity of electrolytic detachment to enhance detachment procedures. Electrolytic activity can be focused by insulating nearby areas of a core wire and pre-treating a detachment zone to reduce crystallinity of the detachment zone.
    Type: Grant
    Filed: August 8, 2014
    Date of Patent: November 7, 2017
    Assignee: Covidien LP
    Inventors: Jianlu Ma, Vincent Divino