CN111759364B - Blood vessel chronic occlusion pathological change positioning system - Google Patents
Blood vessel chronic occlusion pathological change positioning system Download PDFInfo
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- CN111759364B CN111759364B CN202010555156.1A CN202010555156A CN111759364B CN 111759364 B CN111759364 B CN 111759364B CN 202010555156 A CN202010555156 A CN 202010555156A CN 111759364 B CN111759364 B CN 111759364B
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- 230000001684 chronic effect Effects 0.000 title claims abstract description 32
- 210000004204 blood vessel Anatomy 0.000 title claims abstract description 20
- 230000036285 pathological change Effects 0.000 title claims abstract description 8
- 231100000915 pathological change Toxicity 0.000 title claims abstract description 8
- 239000011148 porous material Substances 0.000 claims abstract description 22
- 230000008602 contraction Effects 0.000 claims abstract description 4
- 230000003902 lesion Effects 0.000 claims description 24
- 230000002792 vascular Effects 0.000 claims description 12
- -1 polyethylene Polymers 0.000 claims description 9
- 238000002560 therapeutic procedure Methods 0.000 claims description 6
- 239000004698 Polyethylene Substances 0.000 claims description 3
- 239000004743 Polypropylene Substances 0.000 claims description 3
- 239000004793 Polystyrene Substances 0.000 claims description 3
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 claims description 3
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 claims description 3
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000004417 polycarbonate Substances 0.000 claims description 3
- 229920000515 polycarbonate Polymers 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 229920002223 polystyrene Polymers 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 239000004800 polyvinyl chloride Substances 0.000 claims description 3
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 3
- 238000000034 method Methods 0.000 description 4
- 238000013146 percutaneous coronary intervention Methods 0.000 description 3
- 208000024248 Vascular System injury Diseases 0.000 description 2
- 208000012339 Vascular injury Diseases 0.000 description 2
- 210000004351 coronary vessel Anatomy 0.000 description 2
- 210000005259 peripheral blood Anatomy 0.000 description 2
- 239000011886 peripheral blood Substances 0.000 description 2
- 206010069729 Collateral circulation Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000013152 interventional procedure Methods 0.000 description 1
- 230000004807 localization Effects 0.000 description 1
- 230000007170 pathology Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/32—Surgical cutting instruments
- A61B17/3205—Excision instruments
- A61B17/3207—Atherectomy devices working by cutting or abrading; Similar devices specially adapted for non-vascular obstructions
- A61B17/320758—Atherectomy devices working by cutting or abrading; Similar devices specially adapted for non-vascular obstructions with a rotating cutting instrument, e.g. motor driven
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/10—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges for stereotaxic surgery, e.g. frame-based stereotaxis
- A61B90/11—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges for stereotaxic surgery, e.g. frame-based stereotaxis with guides for needles or instruments, e.g. arcuate slides or ball joints
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/00743—Type of operation; Specification of treatment sites
- A61B2017/00778—Operations on blood vessels
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
- A61B2017/22038—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for with a guide wire
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/32—Surgical cutting instruments
- A61B17/3205—Excision instruments
- A61B17/3207—Atherectomy devices working by cutting or abrading; Similar devices specially adapted for non-vascular obstructions
- A61B2017/320741—Atherectomy devices working by cutting or abrading; Similar devices specially adapted for non-vascular obstructions for stripping the intima or the internal plaque from a blood vessel, e.g. for endarterectomy
Landscapes
- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Medical Informatics (AREA)
- Animal Behavior & Ethology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Veterinary Medicine (AREA)
- Molecular Biology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Vascular Medicine (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Pathology (AREA)
- Surgical Instruments (AREA)
Abstract
The invention relates to a blood vessel chronic occlusion pathological change positioning system, which comprises an outer tube and an inner tube sleeved in the outer tube; the tail end of the inner tube is converged inwards to form a pore canal; the self-expansion positioning device which is integrally formed and has a certain radian is arranged outside the pore canal; the self-expansion positioning device is connected with the pore canal through a V-shaped supporting rod, a first end of the supporting rod is connected to the joint of the self-expansion positioning device and the tail end of the inner tube, a second end of the supporting rod is connected to the middle part of the pore canal, and the middle end of the supporting rod is connected to the position near the top end of the self-expansion positioning device; the support rod is also provided with a lock catch for controlling the expansion or contraction of the support rod. The self-expansion positioning device of the blood vessel chronic occlusion pathological change positioning system is in a central symmetry structure after self-expansion, so that the pore canal can be positioned at the exact center of the blood vessel.
Description
Technical Field
The invention relates to a medical auxiliary device, in particular to a blood vessel chronic occlusion lesion positioning system.
Background
Chronic total occlusion lesions (CTOs) of the coronary arteries are one of the difficulties of current interventional procedures, while pathology and imaging studies confirm that most CTO lesions have collateral circulation. Current reverse Percutaneous Coronary Intervention (PCI) techniques have many drawbacks such as time consuming, costly, complications and patient injuries, but forward PCI techniques are prone to perforation because of unclear routes. Similarly, chronic occlusion lesions of peripheral blood vessels are difficult to treat, long in operation time, and easy to produce complications and the like.
Thus, the invention provides a vascular chronic occlusion lesion positioning system capable of ensuring that a guide wire or a rotary grinding head is positioned in the middle of a blood vessel.
Disclosure of Invention
The invention aims at overcoming the defects in the prior art and provides a blood vessel chronic occlusion lesion positioning system.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
providing a blood vessel chronic occlusion pathological change positioning system, which comprises an outer tube and an inner tube sleeved in the outer tube; the tail end of the inner tube is converged inwards to form a pore canal; the self-expansion positioning device which is integrally formed and has a certain radian is arranged outside the pore canal; the self-expansion positioning device is connected with the pore canal through a V-shaped supporting rod, a first end of the supporting rod is connected to the joint of the self-expansion positioning device and the tail end of the inner tube, a second end of the supporting rod is connected to the middle part of the pore canal, and the middle end of the supporting rod is connected to the position near the top end of the self-expansion positioning device; the support rod is also provided with a lock catch for controlling the expansion or contraction of the support rod.
Preferably, the outer diameter of the outer tube is one of 2mm or 3 mm.
Preferably, the outer diameter of the inner tube is slightly smaller than the inner diameter of the outer tube.
Preferably, the diameter of the self-expanding positioning device after fully deploying the conformable vessel is one of 2.5mm, 3.5mm, 4mm, 5.5mm, 6mm, 7.5mm, 8.5mm or 10mm.
Preferably, the material of the outer tube and the inner tube is one or more of medical polyvinyl chloride, medical polyethylene, medical polypropylene, medical polystyrene, medical polycarbonate, medical polytetrafluoroethylene and medical acrylonitrile-butadiene-styrene copolymer.
Preferably, the connecting part of the self-expansion positioning device and the tail end of the inner tube is also provided with a one-way limiting device.
Preferably, the tunnel is accessible for percutaneous vascular interventional therapy guidewires, chronic total occlusion lesion guidewires or a rotating burr.
Preferably, when the self-expansion positioning device is not expanded, the lock catch is bent to be in a V shape; when the self-expansion positioning device expands, the lock catch stretches to be in a shape.
Preferably, the number of the support rods is 3-5.
There is also provided a method of using a positioning system as described above, the steps comprising:
s1, placing the outer tube into a blood vessel of a chronic occlusion lesion, and keeping a certain distance from the chronic occlusion lesion;
s2, placing the inner tube opened by the unidirectional limiting device into the outer tube;
s3, when the tail end of the inner tube completely protrudes out of the tail end of the outer tube, the self-expansion positioning device automatically expands, and meanwhile, the support rod slides to a corresponding position and fixes the self-expansion positioning device;
s4, placing a percutaneous vascular interventional therapy guide wire, a chronic total occlusion lesion guide wire or a rotary grinding head into the inner tube, and reaching the chronic occlusion lesion through the pore canal;
s5, after the treatment of the chronic occlusion lesion is completed, taking the percutaneous vascular interventional therapy guide wire, the chronic total occlusion lesion guide wire or the rotary grinding head out of the inner tube;
s6, taking the inner tube out of the outer tube, when the self-expansion positioning device is in contact with the tail end of the outer tube, starting to retract the self-expansion positioning device, correspondingly sliding the support rod to an original position, and simultaneously limiting the self-expansion positioning device by the one-way limiting device;
s7, taking the outer tube out of the blood vessel.
Compared with the prior art, the invention has the following technical effects:
the self-expansion positioning device of the blood vessel chronic occlusion pathological change positioning system is in a central symmetry structure after self-expansion, so that a pore canal can be positioned at the right center of the blood vessel; the unidirectional limiting device can prevent the self-expansion positioning device from expanding in the outer tube when the inner tube is taken out, thereby preventing the shell from being blocked when the inner tube is taken out; the self-expansion positioning device has small expansion tension and is of an arc structure as a whole, so that vascular injury can be effectively prevented; the support rod can provide a certain supporting force for the self-expanding positioning device to prevent the deviation of the hole canal in the operation.
Drawings
FIG. 1 is a schematic illustration of the self-expanding positioning device of the vascular chronic occlusion lesion positioning system of the present invention in an unexpanded configuration;
FIG. 2 is a schematic view of the structure of the self-expanding positioning device of the vascular chronic occlusion positioning system of the present invention when expanded;
FIG. 3 is a schematic cross-sectional view of a support rod of the vascular chronic occlusion lesion localization system of the present invention;
wherein the reference numerals are as follows:
vessel 0; an outer tube 1; an inner tube 2; a self-expanding positioning device 3; a duct 4; and a support bar 5.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
The invention is further described below with reference to the drawings and specific examples, which are not intended to be limiting.
Example 1
The embodiment provides a vascular chronic occlusion lesion positioning system, which comprises an outer tube 1 and an inner tube 2 sleeved in the outer tube 1; the tail end of the inner tube 2 is inwardly converged to form a pore canal 4; the self-expansion positioning device 3 which is integrally formed and has a certain radian is arranged outside the pore canal 4; the self-expansion positioning device 3 and the pore canal 4 are connected through a V-shaped supporting rod 5, a first end of the supporting rod 5 is connected to the joint of the self-expansion positioning device 3 and the tail end of the inner tube 2, a second end of the supporting rod 5 is connected to the middle part of the pore canal 4, and the middle end of the supporting rod 5 is connected to the position near the top end of the self-expansion positioning device 3; the supporting rod 5 is also provided with a lock catch 6 for controlling the expansion or contraction of the supporting rod 5.
Preferably, the outer diameter of the outer tube 1 is one of 2mm or 3 mm.
Preferably, the outer diameter of the inner tube 2 is slightly smaller than the inner diameter of the outer tube 1.
Preferably, the diameter of the self-expanding positioning device 3 after fully expanding the fitting blood vessel is one of 2.5mm, 3.5mm, 4mm, 5.5mm, 6mm, 7.5mm, 8.5mm or 10 mm; wherein, the diameter of the self-expansion positioning device suitable for coronary artery is 2.5mm, 3.5mm or 4mm, and the diameter of the self-expansion positioning device suitable for peripheral blood vessel is 5.5mm, 6mm, 7.5mm, 8.5mm or 10mm.
Preferably, the materials of the outer tube 1 and the inner tube 2 are one or more of medical polyvinyl chloride, medical polyethylene, medical polypropylene, medical polystyrene, medical polycarbonate, medical polytetrafluoroethylene and medical acrylonitrile-butadiene-styrene copolymer.
Preferably, the connecting part of the self-expansion positioning device 3 and the tail end of the inner tube 2 is also provided with a one-way limiting device.
Preferably, the duct 4 is accessible for percutaneous vascular intervention guidewires, chronic total occlusion lesion guidewires or a rotating burr.
Preferably, as shown in fig. 1, when the self-expansion positioning device 3 is not expanded, the lock catch 6 is bent to have a V shape; as shown in fig. 2, when the self-expanding positioning device 3 expands, the lock 6 straightens out into a shape.
As a preferred embodiment, as shown in fig. 3, the number of the support rods 5 is 4.
Example 2
The present embodiment provides a method for using the positioning system as described in embodiment 1, including the steps of:
s1, placing the outer tube 1 into a blood vessel 0 of a chronic occlusion lesion, and keeping a certain distance from the chronic occlusion lesion;
s2, placing the inner tube 2 with the unidirectional limiting device opened into the outer tube 1;
s3, when the tail end of the inner tube 2 completely protrudes out of the tail end of the outer tube 1, the self-expansion positioning device 3 automatically expands, and meanwhile, the supporting rod 5 slides to a corresponding position and fixes the self-expansion positioning device 3;
s4, placing a percutaneous vascular interventional therapy guide wire, a chronic total occlusion lesion guide wire or a rotary grinding head into the inner tube 2, and reaching the chronic occlusion lesion through the pore canal 4;
s5, taking the percutaneous vascular interventional therapy guide wire, the chronic total occlusion lesion guide wire or the rotary grinding head out of the inner tube 2 after the treatment of the chronic occlusion lesion is completed;
s6, taking the inner tube 2 out of the outer tube 1, when the self-expansion positioning device 3 contacts with the tail end of the outer tube 1, the self-expansion positioning device 3 starts to retract, the supporting rod 5 correspondingly slides to the original position, and meanwhile, the one-way limiting device limits the self-expansion positioning device 3;
and S7, taking the outer tube 1 out of the blood vessel 0.
The self-expansion positioning device of the blood vessel chronic occlusion pathological change positioning system is in a central symmetry structure after self-expansion, so that a pore canal can be positioned at the right center of the blood vessel; the unidirectional limiting device can prevent the self-expansion positioning device from expanding in the outer tube when the inner tube is taken out, thereby preventing the shell from being blocked when the inner tube is taken out; the self-expansion positioning device has small expansion tension and is of an arc structure as a whole, so that vascular injury can be effectively prevented; the support rod can provide a certain supporting force for the self-expanding positioning device to prevent the deviation of the hole canal in the operation.
The foregoing description is only illustrative of the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention, and it will be appreciated by those skilled in the art that equivalent substitutions and obvious variations may be made using the description and illustrations of the present invention, and are intended to be included within the scope of the present invention.
Claims (7)
1. A blood vessel chronic occlusion pathological change positioning system is characterized by comprising an outer tube (1) and an inner tube (2) sleeved in the outer tube (1); the tail end of the inner tube (2) is converged inwards to form a pore canal (4); the self-expansion positioning device (3) which is integrally formed and has a certain radian is arranged outside the pore canal (4); the self-expansion positioning device (3) is connected with the pore canal (4) through a V-shaped supporting rod (5), a first end of the supporting rod (5) is connected to the joint of the self-expansion positioning device (3) and the tail end of the inner tube (2), a second end of the supporting rod (5) is connected to the middle part of the pore canal (4), and the middle end of the supporting rod (5) is connected to the position near the top end of the self-expansion positioning device (3); the support rod (5) is also provided with a lock catch (6) for controlling the expansion or contraction of the support rod (5); the self-expansion positioning device (3) is in a central symmetrical structure after self-expansion, and the pore canal (4) is positioned at the right center of the blood vessel;
wherein, the connecting part of the self-expansion positioning device (3) and the tail end of the inner tube (2) is also provided with a one-way limiting device; when the self-expansion positioning device (3) is not expanded, the lock catch (6) is bent to be V-shaped; when the self-expansion positioning device (3) expands, the lock catch (6) stretches to be in a shape.
2. The positioning system according to claim 1, characterized in that the outer diameter of the outer tube (1) is one of 2mm or 3 mm.
3. The positioning system according to claim 2, characterized in that the outer diameter of the inner tube (2) is slightly smaller than the inner diameter of the outer tube (1).
4. A positioning system according to claim 3, characterized in that the diameter of the self-expanding positioning device (3) after fully deploying the conformable vessel is one of 2.5mm, 3.5mm, 4mm, 5.5mm, 6mm, 7.5mm, 8.5mm or 10mm.
5. The positioning system according to claim 1, wherein the material of the outer tube (1) and the inner tube (2) is one or more of medical polyvinyl chloride, medical polyethylene, medical polypropylene, medical polystyrene, medical polycarbonate, medical polytetrafluoroethylene, medical acrylonitrile-butadiene-styrene copolymer.
6. The positioning system according to claim 1, characterized in that the duct (4) is passable by a percutaneous vascular interventional therapy guide wire, a chronic total occlusion lesion guide wire or a rotating burr.
7. The positioning system according to claim 1, characterized in that the number of support rods (5) is 3-5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010555156.1A CN111759364B (en) | 2020-06-17 | 2020-06-17 | Blood vessel chronic occlusion pathological change positioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010555156.1A CN111759364B (en) | 2020-06-17 | 2020-06-17 | Blood vessel chronic occlusion pathological change positioning system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111759364A CN111759364A (en) | 2020-10-13 |
| CN111759364B true CN111759364B (en) | 2023-11-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010555156.1A Active CN111759364B (en) | 2020-06-17 | 2020-06-17 | Blood vessel chronic occlusion pathological change positioning system |
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| CN205831969U (en) * | 2016-05-20 | 2016-12-28 | 厦门依柯利斯医疗科技有限公司 | A kind of interventional therapy inner support medicinal balloon |
| CN206120511U (en) * | 2016-05-25 | 2017-04-26 | 上海形状记忆合金材料有限公司 | A self -expandable support for treating pulmonary venous stenosis |
| WO2018058033A1 (en) * | 2016-09-26 | 2018-03-29 | St. Jude Medical, Cardiology Division, Inc. | Percutaneous catheter directed intravascular occlusion devices with retractable stabilizing wires |
| EP3366239A1 (en) * | 2017-02-24 | 2018-08-29 | Pigott, John, P. | Intravascular catheter having an expandable incising portion and abrasive surfaces |
| CN208626393U (en) * | 2017-12-30 | 2019-03-22 | 苏州茵络医疗器械有限公司 | Across valve device |
| CN111166431A (en) * | 2019-12-27 | 2020-05-19 | 昆山金泰医疗科技有限公司 | Thrombus rapid cutting recovery device with plugging function |
| CN111265277A (en) * | 2018-12-05 | 2020-06-12 | 先健科技(深圳)有限公司 | Thrombus taking device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9586022B2 (en) * | 2006-01-25 | 2017-03-07 | Mayser, Llc | Stretch valve balloon catheter and methods for producing and using same |
| EP2755714B1 (en) * | 2011-09-13 | 2020-03-11 | Pigott, John, P. | Intravascular catheter having an expandable incising portion |
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2020
- 2020-06-17 CN CN202010555156.1A patent/CN111759364B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205831969U (en) * | 2016-05-20 | 2016-12-28 | 厦门依柯利斯医疗科技有限公司 | A kind of interventional therapy inner support medicinal balloon |
| CN206120511U (en) * | 2016-05-25 | 2017-04-26 | 上海形状记忆合金材料有限公司 | A self -expandable support for treating pulmonary venous stenosis |
| WO2018058033A1 (en) * | 2016-09-26 | 2018-03-29 | St. Jude Medical, Cardiology Division, Inc. | Percutaneous catheter directed intravascular occlusion devices with retractable stabilizing wires |
| EP3366239A1 (en) * | 2017-02-24 | 2018-08-29 | Pigott, John, P. | Intravascular catheter having an expandable incising portion and abrasive surfaces |
| CN208626393U (en) * | 2017-12-30 | 2019-03-22 | 苏州茵络医疗器械有限公司 | Across valve device |
| CN111265277A (en) * | 2018-12-05 | 2020-06-12 | 先健科技(深圳)有限公司 | Thrombus taking device |
| CN111166431A (en) * | 2019-12-27 | 2020-05-19 | 昆山金泰医疗科技有限公司 | Thrombus rapid cutting recovery device with plugging function |
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| Publication number | Publication date |
|---|---|
| CN111759364A (en) | 2020-10-13 |
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