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: 12059163
    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: October 25, 2020
    Date of Patent: August 13, 2024
    Assignee: NeuroVasc Technologies, Inc.
    Inventor: Jianlu Ma
  • Publication number: 20240041444
    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: Application
    Filed: October 7, 2023
    Publication date: February 8, 2024
    Applicant: Marvel Medical Technologies LLC
    Inventor: Jianlu Ma
  • Patent number: 11871947
    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: July 30, 2020
    Date of Patent: January 16, 2024
    Assignee: NeuroVasc Technologies, Inc.
    Inventors: Michael Losordo, Jianlu Ma
  • Patent number: 11779319
    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: July 11, 2020
    Date of Patent: October 10, 2023
    Assignee: Marvel Medical Technologies LLC
    Inventor: Jianlu Ma
  • Patent number: 11690741
    Abstract: Vascular remodeling devices can include a proximal section, an intermediate section, and a distal section. During deployment, the proximal section can expand from a compressed delivery state to an expanded state and anchor the device in an afferent vessel of a bifurcation. The distal section expands from the compressed delivery state to an expanded state that may be substantially planar, approximately semi-spherical, umbrella shaped, or reverse umbrella shaped. The distal section is positioned in a bifurcation junction across the neck of an aneurysm or within an aneurysm. The intermediate section allows perfusion to efferent vessels. Before or after the device is in position, embolic material may be used to treat the aneurysm. The distal section can act as a scaffolding to prevent herniation of the embolic material. The device can be used for clot retrieval with integral distal embolic protection.
    Type: Grant
    Filed: September 16, 2020
    Date of Patent: July 4, 2023
    Assignee: COVIDIEN LP
    Inventors: Anh Cam, Michael Losordo, Jianlu Ma, Luong Nguyen, Sanjay Shrivastava, John Wainwright, Xiaoling Zhao
  • Publication number: 20230027756
    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.
    Type: Application
    Filed: September 30, 2022
    Publication date: January 26, 2023
    Applicant: NeuroVasc Technologies, Inc.
    Inventors: Michael Losordo, Jianlu Ma
  • Publication number: 20220202430
    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: March 14, 2022
    Publication date: June 30, 2022
    Applicant: Innova Medical, Inc.
    Inventors: Sanjay Shrivastava, Jianlu Ma
  • Patent number: 11272945
    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: Grant
    Filed: October 9, 2019
    Date of Patent: March 15, 2022
    Assignee: INNOVA VASCULAR, INC.
    Inventors: Sanjay Shrivastava, Jianlu Ma
  • Publication number: 20220000503
    Abstract: The present invention provides devices for removing an embolus or thrombus. The device includes an elongate member configured for insertion into the vasculature, an expandable member that extends from the distal end of the elongate member, and a flow restrictor associated with a proximal portion of the expandable member. The expandable member is configured to transition from a compacted state to an expanded state, in which the expandable portion engages with the embolus. The flow restrictor is configured to restrict blood flow and generate a low pressure zone at a location in the vasculature that is distal to the flow restrictor.
    Type: Application
    Filed: September 14, 2021
    Publication date: January 6, 2022
    Applicant: NeuroVasc Technologies, Inc.
    Inventor: Jianlu Ma
  • Patent number: 11123089
    Abstract: The present invention provides devices for removing an embolus or thrombus. The device includes an elongate member configured for insertion into the vasculature, an expandable member that extends from the distal end of the elongate member, and a flow restrictor associated with a proximal portion of the expandable member. The expandable member is configured to transition from a compacted state to an expanded state, in which the expandable portion engages with the embolus. The flow restrictor is configured to restrict blood flow and generate a low pressure zone at a location in the vasculature that is distal to the flow restrictor.
    Type: Grant
    Filed: January 25, 2017
    Date of Patent: September 21, 2021
    Assignee: NeuroVasc Technologies, Inc
    Inventor: Jianlu Ma
  • Publication number: 20210275186
    Abstract: The present invention relates to detachment mechanisms for delivering and releasing implantable devices into a body lumen. According to certain aspects, systems of the invention include a junction that couples an implantable device to a delivery member. The junction includes an anodic portion and a cathodic portion galvanically coupled to the anodic portion such that the anodic portion corrodes when exposed to an electrolytic fluid, thereby detaching the implantable device from the delivery member without application of energy from an external power source.
    Type: Application
    Filed: May 15, 2021
    Publication date: September 9, 2021
    Inventor: Jianlu Ma
  • Patent number: 11045204
    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: November 1, 2018
    Date of Patent: June 29, 2021
    Assignee: COVIDIEN LP
    Inventors: Anh Cam, Michael Louis Losordo, Jianlu Ma, Xiaoling Zhao
  • Patent number: 11006963
    Abstract: The present invention relates to detachment mechanisms for delivering and releasing implantable devices into a body lumen. According to certain aspects, systems of the invention include a junction that couples an implantable device to a delivery member. The junction includes an anodic portion and a cathodic portion galvanically coupled to the anodic portion such that the anodic portion corrodes when exposed to an electrolytic fluid, thereby detaching the implantable device from the delivery member without application of energy from an external power source.
    Type: Grant
    Filed: September 2, 2014
    Date of Patent: May 18, 2021
    Inventor: Jianlu Ma
  • Publication number: 20210038236
    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: October 25, 2020
    Publication date: February 11, 2021
    Applicant: NeuroVasc Technologies, Inc.
    Inventor: Jianlu Ma
  • Publication number: 20210000624
    Abstract: Vascular remodeling devices can include a proximal section, an intermediate section, and a distal section. During deployment, the proximal section can expand from a compressed delivery state to an expanded state and anchor the device in an afferent vessel of a bifurcation. The distal section expands from the compressed delivery state to an expanded state that may be substantially planar, approximately semi-spherical, umbrella shaped, or reverse umbrella shaped. The distal section is positioned in a bifurcation junction across the neck of an aneurysm or within an aneurysm. The intermediate section allows perfusion to efferent vessels. Before or after the device is in position, embolic material may be used to treat the aneurysm. The distal section can act as a scaffolding to prevent herniation of the embolic material. The device can be used for clot retrieval with integral distal embolic protection.
    Type: Application
    Filed: September 16, 2020
    Publication date: January 7, 2021
    Inventors: Anh Cam, Michael Losordo, Jianlu Ma, Luong Nguyen, Sanjay Shrivastava, John Wainwright, Xiaoling Zhao
  • Publication number: 20200360138
    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: August 6, 2020
    Publication date: November 19, 2020
    Inventor: Jianlu Ma
  • Patent number: 10835271
    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: September 6, 2018
    Date of Patent: November 17, 2020
    Assignee: NeuroVasc Technologies Inc.
    Inventor: Jianlu Ma
  • Publication number: 20200352585
    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: July 30, 2020
    Publication date: November 12, 2020
    Applicant: NeuroVasc Technologies, Inc.
    Inventors: Michael Losordo, Jianlu Ma
  • Publication number: 20200337685
    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: Application
    Filed: July 11, 2020
    Publication date: October 29, 2020
    Applicant: Marvel Medical Technologies LLC
    Inventor: Jianlu Ma
  • Patent number: 10806611
    Abstract: Vascular remodeling devices can include a proximal section, an intermediate section, and a distal section. During deployment, the proximal section can expand from a compressed delivery state to an expanded state and anchor the device in an afferent vessel of a bifurcation. The distal section expands from the compressed delivery state to an expanded state that may be substantially planar, approximately semi-spherical, umbrella shaped, or reverse umbrella shaped. The distal section is positioned in a bifurcation junction across the neck of an aneurysm or within an aneurysm. The intermediate section allows perfusion to efferent vessels. Before or after the device is in position, embolic material may be used to treat the aneurysm. The distal section can act as a scaffolding to prevent herniation of the embolic material. The device can be used for clot retrieval with integral distal embolic protection.
    Type: Grant
    Filed: April 3, 2017
    Date of Patent: October 20, 2020
    Assignee: COVIDIEN LP
    Inventors: Anh Cam, Michael Losordo, Jianlu Ma, Luong Nguyen, Sanjay Shrivastava, John Wainwright, Xiaoling Zhao