Patents by Inventor Aleksandr Leynov
Aleksandr Leynov 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: 20240293243Abstract: A delivery system for deploying a medical implant includes a delivery wire assembly disposed within a delivery catheter lumen, the assembly having an implant loading region configured for seating the implant when the assembly is constrained within the delivery catheter lumen and the implant is in a compressed configuration, the assembly further including an implant distal protection having a central portion coupled to the assembly, distal of the implant loading region, and a peripheral portion extending proximally from the central portion to at least partially cover a distal end portion of the implant when the assembly, implant and distal protection are constrained within the catheter lumen, wherein the peripheral portion remains extending in the proximal direction when the implant assumes an expanded configuration after being released from the catheter lumen, and the peripheral portion of the distal protection comprises a plurality of stems, each comprising a respective petal-like member.Type: ApplicationFiled: May 11, 2024Publication date: September 5, 2024Inventors: Clay W. Northrop, Aleksandr Leynov, Siddharth Loganathan, Danny Lai, Jonathan Gibbs, Samit Mustafa
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Patent number: 12005205Abstract: A guidewire includes: a shaft having a proximal end, a distal end, and a body extending from the proximal end to the distal end; a blunt tip; and a sleeve; wherein the body of the shaft comprises at least a segment that is surrounded by the sleeve, the segment coupled to the blunt tip; and wherein the segment of the body of the shaft comprises a flat portion having one or more openings extending through a thickness of the flat portion.Type: GrantFiled: December 16, 2019Date of Patent: June 11, 2024Assignees: Stryker Corporation, Stryker European Operations LimitedInventors: Brent Gerberding, Hancun Chen, Aleksandr Leynov
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Patent number: 11871948Abstract: An elongate embolectomy device having a radially constrained configuration and a radially expanded configuration, the embolectomy device being formed out of a plurality of elongate clot engaging structures, each clot engaging structure comprising a plurality of interconnected struts forming an open cell pattern, wherein, when the embolectomy device is in the radially expanded configuration, the clot engaging structures each have a semi-tubular arcuate profile, including a convex face and an concave face facing opposite the convex face, extending along a length of the embolectomy device, the clot engaging structures being longitudinally disposed relative to each other such that the concave faces are facing radially outward, and the convex surfaces are facing radially inward, respectively, relative to a longitudinal axis of the embolectomy device.Type: GrantFiled: August 30, 2021Date of Patent: January 16, 2024Assignees: Stryker Corporation, Stryker, European Holdings I, LLCInventors: Ryan M. Grandfield, Aleksandr Leynov
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Publication number: 20220265448Abstract: A method of assembling an apparatus for delivering an implant to a deployment site in a patient's vasculature, includes: positioning an implant engagement member at least partially within a lumen of a tubular structure, the tubular structure having a sidewall comprising a pattern of wires or struts; heating the implant engagement member; pressing at least a portion of the sidewall of the tubular structure radially inward into a surface of the implant engagement member so that the wires or the struts of the sidewall penetrate into the surface and create corresponding recesses therein; and after the recesses are created in the surface of the implant engagement member, hardening the implant engagement member.Type: ApplicationFiled: February 22, 2021Publication date: August 25, 2022Applicants: STRYKER CORPORATION, STRYKER EUROPEAN OPERATIONS LIMITEDInventors: Aleksandr Leynov, Michael Poor, Hanh Ho
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Publication number: 20210386444Abstract: An elongate embolectomy device having a radially constrained configuration and a radially expanded configuration, the embolectomy device being formed out of a plurality of elongate clot engaging structures, each clot engaging structure comprising a plurality of interconnected struts forming an open cell pattern, wherein, when the embolectomy device is in the radially expanded configuration, the clot engaging structures each have a semi-tubular arcuate profile, including a convex face and an concave face facing opposite the convex face, extending along a length of the embolectomy device, the clot engaging structures being longitudinally disposed relative to each other such that the concave faces are facing radially outward, and the convex surfaces are facing radially inward, respectively, relative to a longitudinal axis of the embolectomy device.Type: ApplicationFiled: August 30, 2021Publication date: December 16, 2021Applicants: STRYKER CORPORATION, STRYKER EUROPEAN HOLDINGS I, LLCInventors: Ryan M. Grandfield, Aleksandr Leynov
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Patent number: 11116529Abstract: An elongate embolectomy device having a radially constrained configuration and a radially expanded configuration, the embolectomy device being formed out of a plurality of elongate clot engaging structures, each clot engaging structure comprising a plurality of interconnected struts forming an open cell pattern, wherein, when the embolectomy device is in the radially expanded configuration, the clot engaging structures each have a semi-tubular arcuate profile, including a convex face and an concave face facing opposite the convex face, extending along a length of the embolectomy device, the clot engaging structures being longitudinally disposed relative to each other such that the concave faces are facing radially outward, and the convex surfaces are facing radially inward, respectively, relative to a longitudinal axis of the embolectomy device.Type: GrantFiled: February 22, 2018Date of Patent: September 14, 2021Assignee: Stryker CorporationInventors: Ryan M. Grandfield, Aleksandr Leynov
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Publication number: 20210178127Abstract: A guidewire includes: a shaft having a proximal end, a distal end, and a body extending from the proximal end to the distal end; a blunt tip; and a sleeve; wherein the body of the shaft comprises at least a segment that is surrounded by the sleeve, the segment coupled to the blunt tip; and wherein the segment of the body of the shaft comprises a flat portion having one or more openings extending through a thickness of the flat portion.Type: ApplicationFiled: December 16, 2019Publication date: June 17, 2021Inventors: Brent Gerberding, Hancun Chen, Aleksandr Leynov
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Patent number: 10993731Abstract: A thromboembolic removal system for treating ischemic stroke, including a guide and occlusion catheter, a delivery and aspiration catheter, an aspiration pump, a thromboembolic receiver, and a thromboembolic separator.Type: GrantFiled: April 14, 2017Date of Patent: May 4, 2021Assignee: Penumbra, Inc.Inventors: Aleksandr Leynov, David Barry, Vikas Gupta, Arani Bose
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Patent number: 10939931Abstract: An embolectomy device includes a pair of elongate spine members extending in a substantially parallel configuration along a longitudinal axis of the device, a first plurality of clot engaging structures having first ends attached to a first one of the spine members and second ends attached to other one of the spine members, and a second plurality of clot engaging structures having first and second ends attached to the respective first and second spine members offset 180° from the first plurality of attached clot engaging structures, such that, when the embolectomy device is unsheathed within in a blood vessel alongside a clot, one of the first and second plurality of the clot engaging structures contact and compress against a wall of the blood vessel to provide a biasing force to facilitate engagement of the other one of the first and second plurality of the clot engaging structures with the clot.Type: GrantFiled: June 19, 2018Date of Patent: March 9, 2021Assignee: STRYKER CORPORATIONInventors: Ryan Matthew Grandfield, Aleksandr Leynov
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Publication number: 20190380723Abstract: An embolectomy device includes a pair of elongate spine members extending in a substantially parallel configuration along a longitudinal axis of the device, a first plurality of clot engaging structures having first ends attached to a first one of the spine members and second ends attached to other one of the spine members, and a second plurality of clot engaging structures having first and second ends attached to the respective first and second spine members offset 180° from the first plurality of attached clot engaging structures, such that, when the embolectomy device is unsheathed within in a blood vessel alongside a clot, one of the first and second plurality of the clot engaging structures contact and compress against a wall of the blood vessel to provide a biasing force to facilitate engagement of the other one of the first and second plurality of the clot engaging structures with the clot.Type: ApplicationFiled: June 19, 2018Publication date: December 19, 2019Inventors: Ryan Matthew GRANDFIELD, Aleksandr LEYNOV
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Publication number: 20190380726Abstract: An elongate embolectomy device having a radially constrained configuration and a radially expanded configuration, the embolectomy device being formed out of a plurality of elongate clot engaging structures, each clot engaging structure comprising a plurality of interconnected struts forming an open cell pattern, wherein, when the embolectomy device is in the radially expanded configuration, the clot engaging structures each have a semi-tubular arcuate profile, including a convex face and an concave face facing opposite the convex face, extending along a length of the embolectomy device, the clot engaging structures being longitudinally disposed relative to each other such that the concave faces are facing radially outward, and the convex surfaces are facing radially inward, respectively, relative to a longitudinal axis of the embolectomy device.Type: ApplicationFiled: February 22, 2018Publication date: December 19, 2019Inventors: Ryan M. GRANDFIELD, Aleksandr LEYNOV
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Publication number: 20170172581Abstract: An aneurysm occlusion system includes a device positionable within a cerebral blood vessel covering a neck of an aneurysm on the blood vessel. The device includes an expandable tubular element having a lumen surrounded by a sidewall including a plurality of gaps. When expanded, the tubular element includes longitudinal standards arrayed helically in a proximal to distal direction. The standards support struts and the gaps are defined between adjacent struts and are sufficiently large to permit delivery of embolic coils or other embolic materials therethrough.Type: ApplicationFiled: March 6, 2017Publication date: June 22, 2017Applicant: Penumbra, Inc.Inventors: Arani Bose, Vikas Gupta, Dave Barry, Delilah Hui, Stephen Pons, Aleksandr Leynov
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Patent number: 9615832Abstract: An aneurysm occlusion system includes a device positionable within a cerebral blood vessel covering a neck of an aneurysm on the blood vessel. The device includes an expandable tubular element having a lumen surrounded by a sidewall including a plurality of gaps. When expanded, the tubular element includes longitudinal standards arrayed helically in a proximal to distal direction. The standards support struts and the gaps are defined between adjacent struts and are sufficiently large to permit delivery of embolic coils or other embolic materials therethrough.Type: GrantFiled: May 31, 2013Date of Patent: April 11, 2017Assignee: Penumbra, Inc.Inventors: Arani Bose, Vikas Gupta, Dave Barry, Delilah Hui, Stephen Pons, Aleksandr Leynov
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Patent number: 9144508Abstract: A highly compressible stent is described. The stent includes a plurality of circumferentially offset and interconnected undulating rings having intermediate struts disposed between at least some of the undulating ring struts.Type: GrantFiled: November 30, 2007Date of Patent: September 29, 2015Assignee: Back Bay Medical Inc.Inventors: Stephen Hebert, Marc-Alan Levine, Aleksandr Leynov
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Publication number: 20150209165Abstract: Treatment devices having a self-expandable member with one or more of a proximal end portion, a main body portion and a distal portion. According to some implementations a self-expandable member is provided with proximal end portion comprising a peripheral rail having a first substantially straight segment and a second substantially straight segment that extends distally to the first substantially straight segment with the angular orientation of the second substantially straight segment being different than the angular orientation of the first substantially straight segment, the angular orientation of the second substantially straight segment being similar to a helix angle of at least some of the cell structures in the main body portion.Type: ApplicationFiled: January 28, 2015Publication date: July 30, 2015Applicant: Concentric Medical, Inc.Inventors: Ryan M. Grandfield, Scott D. Wilson, Aleksandr Leynov, Masao Drexel
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Publication number: 20130261730Abstract: An aneurysm occlusion system includes a device positionable within a cerebral blood vessel covering a neck of an aneurysm on the blood vessel. The device includes an expandable tubular element having a lumen surrounded by a sidewall including a plurality of gaps. When expanded, the tubular element includes longitudinal standards arrayed helically in a proximal to distal direction. The standards support struts and the gaps are defined between adjacent struts and are sufficiently large to permit delivery of embolic coils or other embolic materials therethrough.Type: ApplicationFiled: May 31, 2013Publication date: October 3, 2013Inventors: Arani Bose, Vikas Gupta, Dave Barry, Delilah Hui, Stephen Pons, Aleksandr Leynov
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Publication number: 20120150147Abstract: A system for restoring blood flow through an occluded vessel in the cerebrovasculature is disclosed. The system includes a tubular element constructed of shape memory material eccentrically mounted on the distal end of an introducer. The walls of the tubular element are defined by standards and connectors, and the standards are oriented at an angle to the longitudinal axis of the tubular element. A method of manufacture of the system includes cutting a tube of shape memory material, conferring a twist on the cut tube, and heat setting the tube. The method further includes affixing the shape set tube to an introducer. A method of treatment using the system is also described.Type: ApplicationFiled: December 6, 2011Publication date: June 14, 2012Applicant: Penumbra, Inc.Inventors: Aleksandr Leynov, Dave Barry, Vikas Gupta, Soe Ngwe, Arani Bose
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Publication number: 20070239261Abstract: An aneurysm occlusion device is positionable within a cerebral blood vessel covering a neck of an aneurysm on the blood vessel. The device includes a tubular element having a lumen surrounded by an occlusive sidewall including a plurality of gaps. The gaps are sufficiently small to cause at least partial occlusion against flow of blood from the blood vessel through the side wall into the aneurysm, but are expandable in response to a fluid pressure differential between a first area inside the lumen and a second area outside the lumen to allow flow of fluid through the side wall between the blood vessel and a side branch vessel.Type: ApplicationFiled: April 6, 2007Publication date: October 11, 2007Inventors: Arani Bose, David Barry, Vikas Gupta, Aleksandr Leynov, Delilah Hui