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公开(公告)号：US11944313B2
公开(公告)日：2024-04-02
申请号：US17813469
申请日：2022-07-19
Applicant: Covidien LP
Inventor： Yihan Wang , Victoria Schuman , Zhimin Fang , Yapeng Xu , Haitao Cao , Zhipeng Chen , Xiaojing Guo , Shichang Wen
CPC classification number: A61B17/12113 , A61B17/12145 , A61F2/01 , A61B2017/1205 , A61B17/1215 , A61B17/12154 , A61F2/06
Abstract: In some examples, an embolization device includes multiple sections with three-dimensional non-helical structures when deployed at a vascular site. The multiple sections include a first section and one or more second sections that are smaller than the first section. The first section may have a deployed structure configured to anchor the device at a vascular site (e.g., a blood vessel) of a patient while each of the one or more second sections may be formed from loops that configured to pack and obstruct the vascular site. In some cases, the embolization device also includes a third section having a deployed configuration with multiple helical windings or loops is configured to anchor the embolization device at the vascular site.
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公开(公告)号：US20220346802A1
公开(公告)日：2022-11-03
申请号：US17813469
申请日：2022-07-19
Applicant: Covidien LP
Inventor： Yihan Wang , Victoria Schuman , Zhimin Fang , Yapeng Xu , Haitao Cao , Zhipeng Chen , Xiaojing Guo , Shichang Wen
Abstract: In some examples, an embolization device includes multiple sections with three-dimensional non-helical structures when deployed at a vascular site. The multiple sections include a first section and one or more second sections that are smaller than the first section. The first section may have a deployed structure configured to anchor the device at a vascular site (e.g., a blood vessel) of a patient while each of the one or more second sections may be formed from loops that configured to pack and obstruct the vascular site. In some cases, the embolization device also includes a third section having a deployed configuration with multiple helical windings or loops is configured to anchor the embolization device at the vascular site.
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公开(公告)号：US11376141B2
公开(公告)日：2022-07-05
申请号：US16913871
申请日：2020-06-26
Applicant: Covidien LP
Inventor： John Wainwright , Todd Mendelson , Kurt Haggstrom , Masoud Molaei , Victoria Schuman , Min-Shyan Sheu
Abstract: Medical devices that include a tubular member with a plurality of braided filaments, each filament crossing another of the filaments at a respective crossing point forming sidewall and a plurality of pores in the sidewall that are sized to inhibit flow of blood through the sidewall into an aneurysm to a degree sufficient to lead to thrombosis and healing of the aneurysm when the tubular member is positioned in a blood vessel and adjacent to the aneurysm, the pores have an average pore size that is less than or equal to about 500 microns when the tubular member is in an expanded state, the filaments possessing antithrombogenic surfaces to increase antithrombogenicity of the medical device with pores substantially free of webs formed by antithrombogenic material, such that fewer than 5% of the crossing points have webs formed by antithrombogenic material thereby permitting the pores to be substantially free of webs.
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公开(公告)号：US20210045749A1
公开(公告)日：2021-02-18
申请号：US16539575
申请日：2019-08-13
Applicant: Covidien LP
Inventor： Yihan Wang , Victoria Schuman , Zhimin Fang , Yapeng Xu , Haitao Cao , Zhipeng Chen , Xiaojing Guo , Shichang Wen
Abstract: In some examples, an embolization device includes multiple sections with three-dimensional non-helical structures when deployed at a vascular site. The multiple sections include a first section and one or more second sections that are smaller than the first section. The first section may have a deployed structure configured to anchor the device at a vascular site (e.g., a blood vessel) of a patient while each of the one or more second sections may be formed from loops that configured to pack and obstruct the vascular site. In some cases, the embolization device also includes a third section having a deployed configuration with multiple helical windings or loops is configured to anchor the embolization device at the vascular site.
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公开(公告)号：US10905459B2
公开(公告)日：2021-02-02
申请号：US15175784
申请日：2016-06-07
Applicant: Covidien LP
IPC: A61B17/3207
Abstract: A tissue-removing catheter includes a tissue-removing element operably connected to a drive shaft for rotation of the tissue-removing element about an axis of rotation in a cutting direction. The tissue-removing element is an integrally formed, one-piece body and has an annular tissue-removing head at the distal end of a tissue-removing element body. In some embodiments, primary tissue-removing components include an integrally formed cutting tooth and inner shearing member and are spaced angularly around the tissue-removing blade. Secondary tissue-removing components include cutting teeth and are interposed between the primary tissue-removing components around the tissue-removing blade. The tissue-removing element is made by removing material from a blank to form the primary and secondary tissue-removing components.
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Patent Agency Ranking
公开(公告)号：US10695200B2
公开(公告)日：2020-06-30
申请号：US16277170
申请日：2019-02-15
Applicant: Covidien LP
Inventor： John Wainwright , Todd Mendelson , Kurt Haggstrom , Masoud Molaei , Victoria Schuman , Min-Shyan Sheu
Abstract: Medical devices that include a tubular member with a plurality of braided filaments, each filament crossing another of the filaments at a respective crossing point forming sidewall and a plurality of pores in the sidewall that are sized to inhibit flow of blood through the sidewall into an aneurysm to a degree sufficient to lead to thrombosis and healing of the aneurysm when the tubular member is positioned in a blood vessel and adjacent to the aneurysm, the pores have an average pore size that is less than or equal to about 500 microns when the tubular member is in an expanded state, the filaments possessing antithrombogenic surfaces to increase antithrombogenicity of the medical device with pores substantially free of webs formed by antithrombogenic material, such that fewer than 5% of the crossing points have webs formed by antithrombogenic material thereby permitting the pores to be substantially free of webs.
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公开(公告)号：US10507036B2
公开(公告)日：2019-12-17
申请号：US14994343
申请日：2016-01-13
Applicant: Covidien LP
Inventor： Victoria Schuman , Ethan Guggenheimer
IPC: A61B17/3207 , A61B17/3205
Abstract: A tissue-removing catheter includes a tissue-removing element operatively connected to a drive shaft for rotation of the tissue-removing element about an axis of rotation in a cutting direction. In some embodiments, the tissue removing element has a cutting blade and cutting teeth positioned radially inward of the cutting blade with respect to the axis of rotation. The cutting blade and cutting teeth are fixed with respect to one another to form first and second cuts in tissue as the tissue-removing element rotates. In certain embodiments, the tissue-removing element includes a cutting blade and raised elements spaced apart inward of the cutting blade relative to the axis of rotation to define an annular tissue-receiving channel between the cutting blade and the raised elements. A bottom surface of the channel can define cutting teeth.
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公开(公告)号：US20190175373A1
公开(公告)日：2019-06-13
申请号：US16277170
申请日：2019-02-15
Applicant: Covidien LP
Inventor： John Wainwright , Todd Mendelson , Kurt Haggstrom , Masoud Molaei , Victoria Schuman , Min-Shyan Sheu
CPC classification number: A61F2/90 , A61F2/07 , A61F2/966 , A61F2002/072 , A61F2002/823 , A61F2002/9665 , A61F2210/0076 , A61F2230/0069 , A61F2250/0023 , A61F2250/0067 , A61F2310/00389 , B05D1/18 , B05D3/0272 , B05D3/04
Abstract: Medical devices that include a tubular member with a plurality of braided filaments, each filament crossing another of the filaments at a respective crossing point forming sidewall and a plurality of pores in the sidewall that are sized to inhibit flow of blood through the sidewall into an aneurysm to a degree sufficient to lead to thrombosis and healing of the aneurysm when the tubular member is positioned in a blood vessel and adjacent to the aneurysm, the pores have an average pore size that is less than or equal to about 500 microns when the tubular member is in an expanded state, the filaments possessing antithrombogenic surfaces to increase antithrombogenicity of the medical device with pores substantially free of webs formed by antithrombogenic material, such that fewer than 5% of the crossing points have webs formed by antithrombogenic material thereby permitting the pores to be substantially free of webs.
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公开(公告)号：US10335188B2
公开(公告)日：2019-07-02
申请号：US15684110
申请日：2017-08-23
Applicant: Covidien LP
Inventor： Jenny Zeroni , Cory David Sills , Victoria Schuman , Marc D. Knutson , Bryan Matthew Ladd , Benjamin Robert Fruland , Lucas Schneider , Alexander J. Rice
IPC: A61B17/3207 , A61B17/00 , A61M25/00 , B29C65/18 , B29C53/14 , B29C65/00 , B29L31/00 , B29K77/00 , B29K705/00
Abstract: Drive shafts having helical blades and methods of making are disclosed. In one method a helical auger blade is formed by twisting or sculpting a heated polymer tube which has been placed over a cylindrical drive shaft. In another method a drive shaft is placed within a helical winding and heat is applied to melt polymer which has been coated over one or both of the drive shaft and helical winding.
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公开(公告)号：US10314664B2
公开(公告)日：2019-06-11
申请号：US14877097
申请日：2015-10-07
Applicant: Covidien LP
Inventor： Victoria Schuman
IPC: A61B90/00 , A61B17/3207
Abstract: A tissue-removing catheter includes a tissue-removing element operably connected to a drive shaft for rotation of the tissue-removing element about an axis of rotation in a cutting direction. The tissue-removing element includes a cutting edge that extends around the axis of rotation and a depth stop that extends around the axis of rotation radially inward of the cutting edge relative to the axis of rotation. The depth stop defines an engagement surface adapted to engage a hard object and thereby limit the depth at which the cutting edge cuts into the hard object. In use, when the cutting edge cuts into a hard object, the depth stop engages the hard object to limit the cutting depth.
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