CN109350179B - Multi-stage inching circulating spot removing device for cardiology department - Google Patents

Multi-stage inching circulating spot removing device for cardiology department Download PDF

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Publication number
CN109350179B
CN109350179B CN201811484693.0A CN201811484693A CN109350179B CN 109350179 B CN109350179 B CN 109350179B CN 201811484693 A CN201811484693 A CN 201811484693A CN 109350179 B CN109350179 B CN 109350179B
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sleeve
wall
arc
gear
plaque
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CN109350179A (en
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孙雷雷
郭淑丽
孙晓花
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/22Implements 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
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/32Surgical cutting instruments
    • A61B17/3205Excision instruments
    • A61B17/3207Atherectomy devices working by cutting or abrading; Similar devices specially adapted for non-vascular obstructions
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00743Type of operation; Specification of treatment sites
    • A61B2017/00778Operations on blood vessels
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/22Implements 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
    • A61B2017/22079Implements 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 suction of debris
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/32Surgical cutting instruments
    • A61B17/3205Excision instruments
    • A61B17/3207Atherectomy devices working by cutting or abrading; Similar devices specially adapted for non-vascular obstructions
    • A61B2017/320741Atherectomy 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

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  • 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)
  • Vascular Medicine (AREA)
  • Molecular Biology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Crushing And Pulverization Processes (AREA)
  • External Artificial Organs (AREA)

Abstract

The invention discloses a multi-stage inching circulating spot removing device for cardiology in the field of medical instruments, which comprises an outer sleeve, wherein a first sleeve is movably arranged on the inner wall of the outer sleeve, a threaded plate is fixedly arranged on the outer wall of the first sleeve, a first gear is fixedly arranged on the outer wall of one end of the first sleeve, a second gear is meshed with the outer wall of the first gear, and a plurality of groups of square openings are formed in the outer wall of one end of the first sleeve. The arc plaque removing plate longitudinal fixing device has the advantages that the arc plaque removing plate is longitudinally fixed, the arc plaque removing plate is prevented from rotating to do longitudinal expansion movement under the action of centrifugal force, so that the blade is accurately controlled, further injury to a blood vessel wall is avoided, the plaque removing diameter of the arc plaque removing plate is adjusted, the plaque removing effect is improved, the blade is prevented from perpendicularly acting on calcified plaque of the blood vessel, further injury to the blood vessel wall is avoided, meanwhile, the smashed calcified plaque is discharged out of the body, the device is simple in structure and convenient to use, electromagnets are prevented from being adopted for many times, faults of the device are reduced, and the success rate of surgery is guaranteed.

Description

Multi-stage inching circulating spot removing device for cardiology department
Technical Field
The invention relates to the field of medical instruments, in particular to a multi-stage inching circulating speckle removing device for cardiology.
Background
Coronary artery calcification, i.e., calcification of atherosclerosis, as well as bone formation, is a complex, organic, regulated, and active process that is one of the manifestations of atherosclerosis. At present, the treatment mode of a patient with severe coronary vessel calcification disease in a hospital is to adopt an olive-shaped rotary grinding head with diamond particles, eliminate all soft, fibrous and calcified morphological plaques according to the principle of differential cutting or selective cutting, form a smooth lumen channel, eliminate or reduce the pneumatic trauma of a vessel wall and minimize the stretching and elastic retraction of the vessel wall. Because of the rotary grinding head diameter is fixed, the rotary grinding heads with different specifications need to be continuously replaced during treatment, so that the contact area of the abrasive drill and calcified plaques in blood vessels of patients is constant, the abrasive drill can only crush the local area of the calcified plaques, and the calcified plaques which are not crushed are still remained in the blood vessels of the patients, thereby causing injury to the patients.
At present, chinese patent with application number CN201610322926.1 discloses a multi-stage inching circulation speckle removing device for cardiology department, which comprises a sleeve, a stator, a coil, a rotor shaft, a first electromagnet, a storage battery, a connecting plate, a first spring, a second electromagnet, a guide plate, a second spring, a blade, a guide net, a third spring, a third electromagnet and a fourth electromagnet. The invention can clean the calcified plaque in the blood vessel of the patient by adjusting the diameter of the moving blade, and simultaneously, the device can extract and discharge the calcified plaque which is crushed in the blood vessel of the patient out of the body of the patient.
However, the invention not only adopts the blade to vertically act on the calcified plaque of the blood vessel, which may cause injury to the blood vessel wall, but also the guide net and the third spring can prevent the blade from acting on the calcified plaque, which prevents the calcified plaque in the blood vessel from being crushed, thereby reducing the efficiency and effect of removing the calcified plaque.
Based on the above, the invention designs a multi-stage inching circulation speckle removing device for cardiology department to solve the above problems.
Disclosure of Invention
The invention aims to provide a multi-stage inching circulation plaque removing device for cardiology, and aims to solve the problems that the prior art provides a device that a blade vertically acts on a calcified plaque of a blood vessel to possibly cause damage to the blood vessel wall, and a guide net and a third spring can prevent the blade from acting on the calcified plaque to prevent the calcified plaque from being crushed, so that the efficiency and the effect of removing the calcified plaque are reduced.
In order to achieve the purpose, the invention provides the following technical scheme: a multi-stage inching circulating spot-removing device for cardiology comprises an outer sleeve, wherein a first sleeve is movably arranged on the inner wall of the outer sleeve, a thread plate is fixedly arranged on the outer wall of the first sleeve, a first gear is fixedly arranged on the outer wall of one end of the first sleeve, a second gear is meshed with the outer wall of the first gear, a plurality of groups of square openings are formed in the outer wall of one end of the first sleeve, a first spring is fixedly arranged on the inner wall of each square opening, a stop block is fixedly arranged at the other end of the first spring, the stop block is movably arranged on the inner wall of each square opening, a second sleeve is fixedly arranged on the side wall of the stop block, the second sleeve is sleeved in an inner cavity of the first sleeve, three groups of arc plates are uniformly arranged on the outer wall of one end of the second sleeve, limiting racks are fixedly arranged at the plate ends of the three groups, a, the gear sleeve inner wall cover is equipped with first poker rod, the fixed axostylus axostyle that is provided with in first poker rod end, the axostylus axostyle cup joints in second sleeve inner chamber, the axostylus axostyle rod end is evenly fixed and is provided with three groups of semi-arc gears, three groups semi-arc gear outer wall meshing has the third gear, the even fixed three groups of slide bars that are provided with of first sleeve other end, three groups the slide bar outer wall slides respectively has arc spot removing plate, arc spot removing plate one end lateral wall is fixed respectively and is provided with the support frame, the activity of the support frame other end has the third gear, the fixed rack groove that.
Preferably, the outer wall of the outer sleeve is spirally sleeved with a storage bottle.
Preferably, the side wall of the second gear is provided with a motor, and the motor is fixed on the inner wall of the outer sleeve.
Preferably, a second poke rod is fixedly arranged on the outer wall of the other end of the second sleeve.
Preferably, the tooth-shaped split is provided with symmetrically distributed racks.
Preferably, the gear sleeve and the outer wall of the first poking rod are sleeved with a fixing rod.
Preferably, a second spring is fixedly arranged between each group of arc-shaped spot removing plates.
Preferably, a plurality of groups of arc-shaped blades are uniformly and fixedly arranged on the outer wall of the arc-shaped spot removing plate. Preferably, the first and second liquid crystal materials are,
three groups of openings are uniformly formed in the outer wall of the other end of the first sleeve.
Compared with the prior art, the invention has the beneficial effects that: according to the invention, the rack and the rack groove are matched with each other, so that the arc-shaped spot removing plate is longitudinally fixed, and the arc-shaped spot removing plate is prevented from rotating to do longitudinal expansion movement under the action of centrifugal force, so that the blade is accurately controlled, and the injury to the vascular wall is further avoided; the first spring, the stop block and the second sleeve are matched with each other, the slide rod is sleeved on the arc-shaped plaque removing plate and fixed on the outer wall of the first sleeve, so that the plaque removing diameter of the arc-shaped plaque removing plate can be adjusted, the plaque removing diameter of the arc-shaped plaque removing plate can be adjusted according to the actual situation of calcified plaque of blood vessels, and the plaque removing effect is improved; through the interaction of the arc plaque removing plate and the arc blade, the arc blade transversely acts on calcified plaque, so that the calcified plaque is crushed and removed, meanwhile, the blade is prevented from perpendicularly acting on the calcified plaque of a blood vessel, and further, the injury to the blood vessel wall is avoided; the crushed calcified plaque is removed through the interaction of the spiral plate and the first sleeve, the blood vessel is prevented from being blocked by the crushed calcified plaque, and the crushed calcified plaque is discharged out of the body; the device simple structure, convenient to use avoids adopting the electro-magnet many times, reduces the device and breaks down, and the success rate of guarantee operation avoids simultaneously stopping the blade and acting on calcified plaque because of direction net and spring, improves the efficiency and the effect of cleaing away of calcified plaque, very big improvement operation despeckle effect and security.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of a main view angle structure according to the present invention;
FIG. 2 is an enlarged view of the structure of the present invention at A;
FIG. 3 is an enlarged view of the structure of the present invention at B;
FIG. 4 is a schematic view of a structure refinement at B of the present invention;
FIG. 5 is a schematic structural view of a structure at point B of the present invention;
FIG. 6 is a schematic cross-sectional view of the present invention;
FIG. 7 is an enlarged view of the structure of the present invention at C;
FIG. 8 is an enlarged view of the structure of the present invention at D;
FIG. 9 is an enlarged view of the structure of the present invention at E;
FIG. 10 is a schematic view of the longitudinal cross-section of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1-outer sleeve, 2-first sleeve, 3-thread plate, 4-first gear, 5-second gear, 6-square opening, 7-first spring, 8-stop block, 9-second sleeve, 10-arc plate, 11-rack, 12-tooth-shaped split, 13-gear sleeve, 14-first poke rod, 15-shaft rod, 16-semi-arc gear, 17-third gear, 18-slide rod, 19-arc spot-removing plate, 20-support frame, 21-rack groove, 22-storage bottle, 23-motor, 24-second poke rod, 25-fixed rod, 26-second spring and 27-arc blade.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-10, the present invention provides a technical solution: a multi-stage inching circulating spot-removing device for cardiology department comprises an outer sleeve 1, a first sleeve 2 is movably arranged on the inner wall of the outer sleeve 1, a thread plate 3 is fixedly arranged on the outer wall of the first sleeve 2, a first gear 4 is fixedly arranged on the outer wall of one end of the first sleeve 2, a second gear 5 is meshed on the outer wall of the first gear 4, a plurality of groups of square openings 6 are arranged on the outer wall of one end of the first sleeve 2, a first spring 7 is fixedly arranged on the inner wall of each group of square openings 6, a stop block 8 is fixedly arranged on the other end of the first spring 7, the stop block 8 is movably arranged on the inner wall of each square opening 6, a second sleeve 9 is fixedly arranged on the side wall of the stop block 8, the second sleeve 9 is sleeved in the inner cavity of the first sleeve 2, three groups of arc-shaped plates 10 are uniformly arranged on the outer wall of one end of the second sleeve 9, a limiting rack, the inner wall cover of gear sleeve 13 is equipped with first poker rod 14, the fixed axostylus axostyle 15 that is provided with in 14 rod ends of first poker rod, axostylus axostyle 15 cup joints in the 9 inner chambers of second sleeve, 15 rod ends of axostylus axostyle are evenly fixed and are provided with three groups of semi-arc gears 16, 16 outer wall meshing of three groups of semi-arc gears has third gear 17, 2 other ends of first sleeve are evenly fixed and are provided with three groups of slide bars 18, 18 outer walls of three groups of slide bars slide respectively have arc spot removing plate 19, 19 one end lateral walls of arc spot removing plate are fixed respectively and are provided with support frame 20, 20 other end activities of support.
Wherein, the outer wall of the outer sleeve 1 is spirally sleeved with a storage bottle 22, which is convenient for collecting the crushed calcified plaque; a motor 23 is arranged on the side wall of the second gear 5, the motor 23 is fixed on the inner wall of the outer sleeve 1, and the motor 23 drives the first sleeve 2 to rotate; a second poke rod 24 is fixedly arranged on the outer wall of the other end of the second sleeve 9, so that the second sleeve 9 can be moved conveniently; the tooth-shaped split 12 is provided with symmetrically distributed racks, and when the gear sleeve 13 is embedded in the tooth-shaped split 12, the first poke rod 14 is fixed; the outer walls of the gear sleeve 13 and the first poke rod 14 are sleeved with a fixed rod 25, so that the gear sleeve 13 is prevented from being thrown out of the first poke rod 14 when the first sleeve 2 rotates; a second spring 26 is fixedly arranged between each group of arc-shaped spot removing plates 19, so that each group of arc-shaped spot removing plates 19 are connected into a whole; a plurality of groups of arc-shaped blades 27 are uniformly and fixedly arranged on the outer wall of the arc-shaped plaque removing plate 19, so that calcified plaques are removed, and direct injury to blood vessels is avoided; three groups of openings are uniformly formed in the outer wall of the other end of the first sleeve 2, and when the second sleeve 9 is moved, the movement of the arc-shaped plate 10 cannot be obstructed.
One specific application of this embodiment is: the first sleeve 2 rotates under the action of the meeting of the first gear 4 and the second gear 5; through the mutual matching of the gear sleeve 13 and the tooth-shaped split 12, when the gear sleeve 13 is inlaid in the tooth-shaped split 12, the first poke rod 14 can be fixed on the first sleeve 2, so that the shaft rod 15 is fixed on the first sleeve 2, and when the gear sleeve 13 is pulled out, the gear sleeve 13 is not inlaid in the tooth-shaped split 12, so that the shaft rod 15 can be moved; through the mutual matching of the limiting rack 11 and the rack groove 21, when the limiting rack 11 is not meshed with the rack groove 21, the arc-shaped plaque removing plate 19 can be moved, when the limiting rack 11 is meshed with the rack groove 21, the arc-shaped plaque removing plate 19 is longitudinally fixed, and when the arc-shaped plaque removing plate 19 rotates, the arc-shaped plaque removing plate 19 is prevented from longitudinally expanding under the action of centrifugal force, so that the arc-shaped blade 27 is accurately controlled, and further, the injury to the blood vessel wall is avoided; through the mutual matching of the first spring 7, the stop block 8 and the second sleeve 9, when the second poke rod 24 is moved, the limit rack 11 is not meshed with the rack groove 21, at the moment, the semi-arc gear 16 and the third gear 17 can act together, and the arc-shaped plaque removing plate 19 is sleeved through the slide rod 18, the slide rod 18 is fixed on the outer wall of the first sleeve 2, the shaft rod 15 is moved, the plaque removing diameter of the arc-shaped plaque removing plate 19 can be adjusted along with the actual situation of the calcified plaque of the blood vessel, the plaque removing effect is further improved, after the appropriate plaque removing diameter is adjusted, the shaft rod 15 is fixed on the first sleeve 2, at the moment, the second poke rod 24 is loosened, meanwhile, the stop block 8 is positioned in a square opening, the rotation of the second sleeve 9 and the first sleeve 2 can be realized, under the action of the first spring 7, the limit rack 11 is meshed with the rack, the limiting rack 11 and the rack groove 21 are tightly embedded, so that the arc-shaped plaque removing plate 19 does longitudinal expansion movement when the first sleeve 2 is prevented from rotating, when the motor 23 drives the second gear 5 to rotate, the first sleeve 2 also rotates along with the first sleeve, and through the interaction between the arc-shaped plaque removing plate 19 and the arc-shaped blade 27, the arc-shaped blade 27 transversely acts on calcified plaques, so that the calcified plaques are crushed and removed, meanwhile, the arc-shaped blade 27 is prevented from perpendicularly acting on the calcified plaques of blood vessels, and further, the injury to blood vessel walls is avoided; the crushed calcified plaque is removed through the interaction of the spiral plate 3 and the first sleeve 2, the blood vessel is prevented from being blocked by the crushed calcified plaque, and the crushed calcified plaque is discharged out of the body; the device simple structure, convenient to use avoids adopting the electro-magnet many times, reduces the device and breaks down, and the success rate of guarantee operation avoids simultaneously stopping the blade and acting on calcified plaque because of direction net and spring, improves the efficiency and the effect of cleaing away of calcified plaque, very big improvement operation despeckle effect and security.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims (9)

1. The utility model provides a multistage inching circulation speckle removal device of intracardiac branch of academic or vocational study, includes outer sleeve (1), its characterized in that: the inner wall of the outer sleeve (1) is movably provided with a first sleeve (2), the outer wall of the first sleeve (2) is fixedly provided with a thread plate (3), the outer wall of one end of the first sleeve (2) is fixedly provided with a first gear (4), the outer wall of the first gear (4) is meshed with a second gear (5), the outer wall of one end of the first sleeve (2) is provided with a plurality of groups of square openings (6), the inner wall of the plurality of groups of square openings (6) is fixedly provided with a first spring (7), the other end of the first spring (7) is fixedly provided with a stop block (8), the stop block (8) is movably arranged on the inner wall of the square opening (6), the side wall of the stop block (8) is fixedly provided with a second sleeve (9), the second sleeve (9) is sleeved in the inner cavity of the first sleeve (2), and the outer wall of one end of the second sleeve (, the three groups of arc-shaped plates (10) are all fixedly provided with a limiting rack (11), the outer wall of one end of the first sleeve (2) is provided with a tooth-shaped crack (12), the outer wall of the tooth-shaped crack (12) is movably provided with a gear sleeve (13), the inner wall of the gear sleeve (13) is sleeved with a first poking rod (14), the rod end of the first poking rod (14) is fixedly provided with a shaft rod (15), the shaft rod (15) is sleeved in the inner cavity (9) of the second sleeve, the rod end of the shaft rod (15) is uniformly and fixedly provided with three groups of semi-arc-shaped gears (16), the outer walls of the semi-arc-shaped gears (16) are meshed with a third gear (17), the other end of the first sleeve (2) is uniformly and fixedly provided with three groups of sliding rods (18), the outer walls of the three groups of sliding rods (18) are respectively provided with arc-, the other end of the support frame (20) is movably provided with a third gear (17), and the side wall of the other end of the arc-shaped spot removing plate (19) is fixedly provided with a rack groove (21).
2. The intracardiac multistage inching cycle plaque removal device of claim 1, characterized in that: and a storage bottle (22) is arranged on the outer wall of the outer sleeve (1) in a spiral sleeve manner.
3. The intracardiac multistage inching cycle plaque removal device of claim 1, characterized in that: and a motor (23) is arranged on the side wall of the second gear (5), and the motor (23) is fixed on the inner wall of the outer sleeve (1).
4. The intracardiac multistage inching cycle plaque removal device of claim 1, characterized in that: and a second poke rod (24) is fixedly arranged on the outer wall of the other end of the second sleeve (9).
5. The intracardiac multistage inching cycle plaque removal device of claim 1, characterized in that: the tooth-shaped split (12) is provided with symmetrically distributed racks.
6. The intracardiac multistage inching cycle plaque removal device of claim 1, characterized in that: and the outer walls of the gear sleeve (13) and the first poking rod (14) are sleeved with a fixed rod (25).
7. The intracardiac multistage inching cycle plaque removal device of claim 1, characterized in that: and a second spring (26) is fixedly arranged between each group of arc-shaped spot removing plates (19).
8. The intracardiac multistage inching cycle plaque removal device of claim 1, characterized in that: the outer wall of the arc-shaped spot removing plate (19) is uniformly and fixedly provided with a plurality of groups of arc-shaped blades (27).
9. The intracardiac multistage inching cycle plaque removal device of claim 1, characterized in that: three groups of openings are uniformly formed in the outer wall of the other end of the first sleeve (2).
CN201811484693.0A 2018-12-06 2018-12-06 Multi-stage inching circulating spot removing device for cardiology department Active CN109350179B (en)

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Application Number Priority Date Filing Date Title
CN201811484693.0A CN109350179B (en) 2018-12-06 2018-12-06 Multi-stage inching circulating spot removing device for cardiology department

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CN109350179B true CN109350179B (en) 2021-06-15

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102151162B (en) * 2011-04-24 2012-07-25 广州大学 Magnetic control blood vessel robot for cleaning thrombus
CN104093369B (en) * 2012-01-15 2017-03-01 小麦公司 Remove the device of thromboembolism and process in biological vessel
CN105943116B (en) * 2016-05-16 2018-05-29 西安交通大学第一附属医院 A kind of Cardiological multistage adjusting microinching Xun Huan is except spot device

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