CN111904538A - Thrombus dredging system for blood vessel - Google Patents
Thrombus dredging system for blood vessel Download PDFInfo
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- CN111904538A CN111904538A CN202010820563.0A CN202010820563A CN111904538A CN 111904538 A CN111904538 A CN 111904538A CN 202010820563 A CN202010820563 A CN 202010820563A CN 111904538 A CN111904538 A CN 111904538A
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- A—HUMAN NECESSITIES
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- 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
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- 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
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- 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
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- 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
- A61B2017/22047—Means for immobilising the guide wire in the patient
- A61B2017/22048—Balloons
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- 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
- A61B2017/22051—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 an inflatable part, e.g. balloon, for positioning, blocking, or immobilisation
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- 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
- A61B2017/22051—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 an inflatable part, e.g. balloon, for positioning, blocking, or immobilisation
- A61B2017/22065—Functions of balloons
- A61B2017/22069—Immobilising; Stabilising
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- 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
- A61B2017/22079—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 suction of debris
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- 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
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- 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
- A61B2017/320775—Morcellators, impeller or propeller like means
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Abstract
The invention discloses a thrombus dredging system for a blood vessel, and relates to the technical field of medical equipment, wherein a supporting air bag is fixedly arranged on the outer side wall of the right end of an inner tube body; the middle part of the air guide main pipe is provided with a slag suction pipe; the middle part of the inner tube body is rotatably provided with a first rotating shaft through a bearing, a first driven bevel gear is fixedly sleeved at the front end of the first rotating shaft, a driving bevel gear is fixedly connected to the output end of the driving motor, and the left side of the driving bevel gear is meshed with the first driven bevel gear; the fixed cover in middle part of a pivot is equipped with the blade holder, and the fixed blade that is provided with of bilateral symmetry around the blade holder, the equal symmetry in upper and lower both sides of interior body have seted up logical groove, and the blade is rotatory to be set up in the inside that leads to the groove, and device overall operation is simple, and manufacturing cost is lower, and actuating mechanism is few, and the volume is less, is convenient for carry out the cleaing away of thrombus in the blood vessel, and simultaneously, the device can be with hit garrulous thrombus and outside the suction discharge body, reduces the probability that secondary.
Description
Technical Field
The invention relates to the technical field of medical equipment, in particular to a thrombus dredging system for a blood vessel.
Background
Deep vein thrombosis is a venous reflux disorder caused by abnormal coagulation of blood in the deep veins, often occurring in the lower extremities; in addition, thrombus formation is frequently generated after the middle-deep vein retention is actually treated, complete recanalization can be achieved after partial anticoagulation treatment, but partial deep vein thrombus finally becomes organization to influence vein reflux, and even risk of pulmonary embolism, myocardial infarction and cerebral infarction caused by falling is caused.
Although some instruments capable of extending into a blood vessel and treating deep venous thrombosis minimally invasive surgery are provided in the prior art, most of the existing instruments adopt a mechanical stripping mode, stripped fragments flow along with blood and cannot be discharged outside the body, and then the probability of reoccurrence of venous thrombosis is increased.
Disclosure of Invention
The invention aims to overcome the defects and shortcomings of the prior art, and provides a thrombus dredging system for a blood vessel, which is simple in structure, reasonable in design and convenient to use, has the advantages of simple overall operation, low production cost, few actuating mechanisms and small volume, is convenient for removing thrombus in the blood vessel, and can suck and discharge broken thrombus out of the body and reduce the probability of secondary thrombus.
In order to achieve the purpose, the invention adopts the technical scheme that: it comprises an inner pipe body, an air guide main pipe and an outer pipe; the inner tube body is of a hollow structure with an opening at the right end, an air guide header pipe is fixedly connected to the opening end on the right side of the inner tube body, the outer end of the air guide header pipe is connected with an external air pump, a plug is fixedly connected to the inner end of the air guide header pipe, and an external guide pipe is movably sleeved on the outer side of the air guide header pipe; it also comprises a thrombus crushing mechanism, a supporting air bag, an air guide branch pipe and a slag suction pipe; a supporting air bag is fixedly arranged on the outer side wall of the right end of the inner pipe body, air guide branch pipes are symmetrically and fixedly inserted in the upper side and the lower side of the plug, one ends of the air guide branch pipes are communicated with the air guide main pipe, and the other ends of the air guide branch pipes are communicated with the inside of the supporting air bag; a slag suction pipe is arranged in the middle of the gas guide main pipe, the inner end of the slag suction pipe fixedly penetrates through the middle of the plug and then extends into the inner pipe body, and the outer end of the slag suction pipe penetrates through the gas guide main pipe and then is connected with an external suction pump; a fixed seat is fixedly arranged at the left end of the inner tube body, and a guide wire is fixedly connected to the fixed seat;
the thrombus crushing mechanism comprises a driving motor, a first rotating shaft, a driving bevel gear, a first driven bevel gear, a cutter holder and a blade; the middle part of the inner tube body is rotatably provided with a first rotating shaft through a bearing, a first driven bevel gear is fixedly sleeved at the front end of the first rotating shaft, a driving motor is fixedly arranged in the inner tube body on the right side of the first rotating shaft through a motor support, a driving bevel gear is fixedly connected to the output end of the driving motor, and the left side of the driving bevel gear is meshed with the first driven bevel gear; a cutter holder is fixedly sleeved in the middle of the first rotating shaft, blades are symmetrically and fixedly arranged on the front side and the rear side of the cutter holder, through grooves are symmetrically formed in the upper side and the lower side of the inner pipe body, and the blades are rotatably arranged inside the through grooves; the driving motor is connected with an external power supply.
Furthermore, a protective pad is fixedly arranged on the outer side wall of the cutter holder; when the driving motor drives the cutter holder to rotate anticlockwise on the first rotating shaft, the protection pad protects the interior of the blood vessel from being scratched by the outer side wall of the cutter holder.
Furthermore, a placing groove is fixedly arranged on the outer side wall of the inner tube body at one side of the supporting air bag; when the supporting air bag enters the blood vessel, the supporting air bag is in an uninflated state, and the supporting air bag is folded and placed inside the placing groove.
Furthermore, a protective cover is covered on the outer sides of the driving motor, the first driven bevel gear and the driving bevel gear, the edge of the protective cover is fixedly arranged on the inner side wall of the inner pipe body, and the first rotating shaft is rotatably arranged on the side wall of the protective cover in a penetrating manner through a bearing; after the thrombus is broken by the blade and the cutter holder, the cutter holder rotates anticlockwise to break and scrape the thrombus into the inner part of the inner pipe body, and the protective cover isolates the driving motor, the first driven bevel gear and the driving bevel gear from contacting with the external thrombus.
Furthermore, a partition plate is fixedly arranged in the inner pipe body on the left side of the protective cover, a second rotating shaft is symmetrically and rotatably arranged on the front side and the rear side of the partition plate through a bearing in a penetrating manner, the left end of the second rotating shaft is rotatably arranged on the left side of the inner pipe body after passing through the left end of the inner pipe body through the bearing in a penetrating manner, and a spiral drill rod is fixedly connected to the extending end; straight gears are fixedly sleeved on the second rotating shaft on the left side of the partition plate, and the straight gears on the front side and the rear side are meshed; the right end of the second rotating shaft positioned on the front side is fixedly connected with a second driven bevel gear after rotating through the side wall of the protective cover through a bearing, and the second driven bevel gear is meshed with the first driven gear; when the driving bevel gear drives the first driven bevel gear to rotate, the first driven bevel gear drives the second driven bevel gear to rotate, the second driven bevel gear drives the second rotating shaft to rotate, meanwhile, under the transmission action of the straight gear, the second rotating shafts on the front side and the rear side move in opposite directions, the spiral drill rod drills thrombus and moves forwards in the thrombus, and the inner pipe body can conveniently enter the inside of the thrombus.
Furthermore, a rough layer is fixedly arranged on the outer side surface of the spiral drill rod, and a medicament layer is arranged on the rough layer; the rough layer is formed by drug corrosion and polishing at later stage, the medicament layer contains anti-restenosis and anti-inflammation drugs inside, and acts on the inside of the thrombus through the auger stem.
The working principle of the invention is as follows: the inner pipe body and the air guide main pipe are arranged in the outer guide pipe in a penetrating way, the inner pipe body is conveyed to the interior of a diseased blood vessel under the matching guide action of the outer guide pipe and the guide wire, the outer guide pipe is withdrawn from the outer side of the inner pipe body after reaching a focus, the inner pipe body is exposed out of the outer side of the outer guide pipe, then the guide wire penetrates through the thrombus, the inner pipe body is arranged in the interior of the thrombus, the supporting air bag is arranged at one side of the thrombus, the supporting air bag is fully filled with air through an external air pump, the supporting air bag is supported on the inner wall of the blood vessel, the driving motor is communicated with an external power supply, the output end of the driving motor drives the driving bevel gear to rotate, the driving bevel gear is meshed with the driven bevel gear, the driven bevel gear drives the first rotating shaft to rotate, the first rotating shaft drives the cutter holder, meanwhile, the thrombus is continuously brought into the inner part of the inner pipe body, and the slag suction pipe is communicated with an external suction pump, so that the thrombus brought into the inner part of the inner pipe body by the tool apron is sucked to the outer side of the blood vessel by the slag suction pipe.
After adopting the structure, the invention has the beneficial effects that:
1. the device has the advantages of simple overall operation, low production cost, few actuating mechanisms and small volume, and is convenient for removing thrombus in blood vessels;
2. the slag suction pipe can suck and discharge the thrombus crushed by the thrombus crushing mechanism out of the body through the slag suction pipe, so that the probability of secondary thrombus is reduced;
3. the thrombus crushing mechanism adopts a driving motor to drive the cutter holder to rotate, and the thrombus is crushed by the high-speed rotation of the blade on the cutter holder, so that the later-stage residue suction pipe can suck and discharge the thrombus out of the body.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a left side view of fig. 1.
Fig. 3 is a sectional view a-a in fig. 1.
Fig. 4 is a sectional view B-B in fig. 2.
Fig. 5 is a schematic view of a coupling structure of the auger stem and the spur gear of the present invention.
Figure 6 is a layer diagram of the auger stem of the present invention.
Description of reference numerals:
the device comprises an inner pipe body 1, an air guide main pipe 2, a plug 3, an outer catheter 4, a supporting airbag 5, an air guide branch pipe 6, a slag suction pipe 7, a fixed seat 8, a guide wire 9, a thrombus crushing mechanism 10, a driving motor 10-1, a first rotating shaft 10-2, a driving bevel gear 10-3, a first driven bevel gear 10-4, a cutter holder 10-5, a blade 10-6, a protection pad 11, a resting groove 12, a protective cover 13, a partition plate 14, a second rotating shaft 15, a spiral drill rod 16, a straight gear 17, a second driven bevel gear 18, a rough layer 19 and a medicament layer 20.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
Referring to fig. 1-6, the present embodiment employs a solution comprising an inner tube 1, a gas manifold 2, and an outer tube 4; the inner tube body 1 is of a hollow structure with an opening at the right end, an air guide main pipe 2 is fixedly connected to the opening end on the right side of the inner tube body 1 through gluing, the air guide main pipe 2 is a medical grade PP hose, the outer end of the air guide main pipe 2 is connected with an external air pump, the inner end of the air guide main pipe 2 is fixedly connected with a plug 3 through hot melting, an outer guide tube 4 is movably sleeved on the outer side of the air guide main pipe 2, and the outer guide tube 4 is a medical grade hose; the thrombus crushing device also comprises a thrombus crushing mechanism 10, a supporting air bag 5, an air guide branch pipe 6 and a slag suction pipe 7; a supporting air bag 5 is fixedly arranged on the outer side wall of the right end of the inner pipe body 1 through gluing, the supporting air bag 5 is made of medical rubber, air guide branch pipes 6 are symmetrically and fixedly inserted into the upper side and the lower side of the plug 3, one end of each air guide branch pipe 6 is communicated with the air guide header pipe 2, and the other end of each air guide branch pipe is communicated with the inside of the supporting air bag 5; a placing groove 12 is arranged on the outer side wall of the inner tube 1 at one side of the supporting air bag 5; when the supporting air bag 5 enters a blood vessel, the supporting air bag 5 is in an uninflated state, the supporting air bag 5 is folded and placed in the placing groove 12, the outer catheter 4 can conveniently slide on the outer side wall of the inner catheter body 1, and the later-stage withdrawal is facilitated; a slag suction pipe 7 is arranged in the middle of the air guide main pipe 2, the inner end of the slag suction pipe 7 fixedly penetrates through the middle of the plug 3 and then extends into the inner pipe body 1, and the outer end of the slag suction pipe 7 penetrates through the air guide main pipe 2 and then is connected with an external suction pump; a fixed seat 8 is fixedly welded on the left end of the inner tube body 1, and a guide wire 9 is fixedly connected on the fixed seat 8;
the thrombus crushing mechanism 10 comprises a driving motor 10-1, a first rotating shaft 10-2, a driving bevel gear 10-3, a first driven bevel gear 10-4, a cutter holder 10-5 and a cutter blade 10-6; the middle part of the inner tube body 1 is rotatably provided with a first rotating shaft 10-2 through a bearing, the front end of the first rotating shaft 10-2 is fixedly welded and sleeved with a first driven bevel gear 10-4, the inside of the inner tube body 1 on the right side of the first rotating shaft 10-2 is fixedly provided with a driving motor 10-1 through a motor bracket and a bolt, the driving motor 10-1 adopts a micro-motor with an intravascular placement, the output end of the driving motor 10-1 is fixedly connected with a driving bevel gear 10-3, and the left side of the driving bevel gear 10-3 is meshed with the first driven bevel gear 10-4; a cutter holder 10-5 is fixedly sleeved in the middle of the first rotating shaft 10-2, blades 10-6 are symmetrically and fixedly arranged on the front side and the rear side of the cutter holder 10-5, through grooves are symmetrically formed in the upper side and the lower side of the inner pipe body 1, and the blades 10-6 are rotatably arranged in the through grooves; the driving motor 10-1 is connected with an external power supply; the outer side wall of the tool apron 10-5 is fixedly provided with a protective pad 11 through sealant; when the driving motor 10-1 drives the cutter holder 10-5 to rotate anticlockwise on the first rotating shaft 10-2, the protection pad 11 protects the interior of the blood vessel from being scratched by the outer side wall of the cutter holder 10-5, so that secondary damage to the blood vessel is reduced; the outer sides of the driving motor 10-1, the first driven bevel gear 10-4 and the driving bevel gear 10-3 are covered with a protective cover 13, the edge of the protective cover 13 is fixedly arranged on the inner side wall of the inner pipe body 1, and the first rotating shaft 10-2 is rotatably arranged on the side wall of the protective cover 13 through a bearing; after the thrombus is broken by the blade 10-6 and the tool apron 10-5, the thrombus is broken and scraped into the inner part of the inner pipe body 1 due to the counterclockwise rotation of the tool apron 10-5, and the protective cover 13 isolates the driving motor 10-1, the first driven bevel gear 10-4 and the driving bevel gear 10-3 from contacting with the external thrombus;
a partition plate 14 is fixedly welded in the inner pipe body 1 on the left side of the protective cover 13, a second rotating shaft 15 is symmetrically arranged on the front side and the rear side of the partition plate 14 in a penetrating mode through a bearing in a rotating mode, the bearing is a bearing with a sealing cover, the left end of the second rotating shaft 15 penetrates through the left end of the inner pipe body 1 through the bearing in a rotating mode, then the second rotating shaft extends to the left side of the inner pipe body 1, and a spiral drill rod 16 is fixedly connected to the extending end; straight gears 17 are fixedly welded on the second rotating shaft 15 on the left side of the partition plate 14, and the straight gears 17 on the front side and the rear side are meshed; the right end of a second rotating shaft 15 positioned on the front side passes through the side wall of the protective cover 13 through a bearing in a rotating manner, and then a second driven bevel gear 18 is fixedly welded on the right end, and the second driven bevel gear 18 is meshed with the first driven gear; a rough layer 19 is fixedly arranged on the outer side surface of the auger stem 16, and a medicament layer 20 is arranged on the rough layer 19; the rough layer 19 is formed by drug corrosion and post polishing, the medicament layer 20 is made of degradable high molecular polymer and contains anti-restenosis drugs and anti-inflammatory drugs, the thickness of the medicament layer 20 is 10-100 μm, so that better dispersion of the medicament can be facilitated, and the medicament can not be retained in a blood vessel for too long time.
The working principle of the specific embodiment is as follows: an inner tube body 1 and an air guide main tube 2 are arranged inside an outer catheter 4 in a penetrating way, the inner tube body 1 is conveyed to the inside of a diseased blood vessel under the matching guiding action of the outer catheter 4 and a guide wire 9, after the diseased blood vessel reaches a focus, the outer catheter 4 is withdrawn from the outer side of the inner tube body 1, the inner tube body 1 is exposed out of the outer catheter 4, then a driving motor 10-1 is communicated with an external power supply through the guide wire 9 penetrating a thrombus, the output end of the driving motor 10-1 drives a driving bevel gear 10-3 to rotate, because the driving bevel gear 10-3 is meshed with a first driven bevel gear 10-4, when the driving bevel gear 10-3 drives the first driven bevel gear 10-4 to rotate, the first driven bevel gear 10-4 drives a second driven bevel gear 18 to rotate, the second driven bevel gear 18 drives a second rotating shaft 15 to rotate, and simultaneously under the transmission action, the second rotating shafts 15 on the front side and the rear side move in opposite directions, the spiral drill rod 16 drills thrombus and moves forwards in the thrombus, and the inner pipe body 1 can conveniently enter the inside of the thrombus; the medicament layer 20 contains anti-restenosis and anti-inflammation medicaments, the medicaments act on the inside of thrombus through the spiral drill rod 16, the supporting air bag 5 is arranged at one side of the thrombus, the supporting air bag 5 is filled with air through an external air pump, the air guide main pipe 2 and the air guide branch pipe 6, so that the supporting air bag 5 is supported on the inner wall of the blood vessel, the first driven bevel gear 10-4 drives the first rotating shaft 10-2 to rotate, the first rotating shaft 10-2 drives the cutter holder 10-5 to rotate anticlockwise, the cutter blade 10-6 crushes the thrombus in the high-speed rotating process, meanwhile, the thrombus is continuously brought into the inner part of the inner tube body 1, the slag suction pipe 7 is communicated with the external suction pump, and the thrombus brought into the inner part of the inner tube body 1 by the slag suction pipe 7 is sucked to the outer side of the blood vessel.
After adopting above-mentioned structure, this embodiment beneficial effect does:
1. the device has the advantages of simple overall operation, low production cost, few actuating mechanisms and small volume, and is convenient for removing thrombus in blood vessels;
2. the slag suction pipe 7 can suck and discharge the thrombus crushed by the thrombus crushing mechanism 10 out of the body through the slag suction pipe 7, so that the probability of secondary thrombus generation is reduced;
3. the thrombus crushing mechanism 10 adopts a driving motor 10-1 to drive a cutter holder 10-5 to rotate, and the thrombus is crushed by the high-speed rotation of a blade 10-6 on the cutter holder 10-5, so that the thrombus is conveniently sucked and discharged out of the body by a slag suction pipe 7 at the later stage;
4. no. two pivot 15 of front and back both sides move in opposite directions, and auger stem 16 is drilling the thrombus, advances in the thrombus inside, makes things convenient for interior body 1 to get into the inside of thrombus, has increased the simple operation nature.
The above description is only for the purpose of illustrating the technical solutions of the present invention and not for the purpose of limiting the same, and other modifications or equivalent substitutions made by those skilled in the art to the technical solutions of the present invention should be covered within the scope of the claims of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (7)
1. A thrombus dredging system for blood vessels comprises an inner tube body (1), an air guide main tube (2) and an outer catheter (4); the inner tube (1) is of a hollow structure with an opening at the right end, the opening end on the right side of the inner tube (1) is fixedly connected with an air guide header pipe (2), the outer end of the air guide header pipe (2) is connected with an external air pump, the inner end of the air guide header pipe (2) is fixedly connected with a plug (3), and the outer side of the air guide header pipe (2) is movably sleeved with an outer guide pipe (4); the method is characterized in that: the thrombus crushing device also comprises a thrombus crushing mechanism (10), a supporting air bag (5), an air guide branch pipe (6) and a slag suction pipe (7); a supporting air bag (5) is fixedly arranged on the outer side wall of the right end of the inner pipe body (1), air guide branch pipes (6) are symmetrically and fixedly inserted in the upper side and the lower side of the plug (3), one end of each air guide branch pipe (6) is communicated with the air guide main pipe (2), and the other end of each air guide branch pipe is communicated with the inside of the supporting air bag (5); a slag suction pipe (7) is arranged in the middle of the air guide main pipe (2), the inner end of the slag suction pipe (7) fixedly penetrates through the middle of the plug (3) and then extends into the inner pipe body (1), and the outer end of the slag suction pipe (7) penetrates through the air guide main pipe (2) and then is connected with an external suction pump; a fixed seat (8) is fixedly arranged at the left end of the inner tube body (1), and a guide wire (9) is fixedly connected to the fixed seat (8);
the thrombus crushing mechanism (10) comprises a driving motor (10-1), a first rotating shaft (10-2), a driving bevel gear (10-3), a first driven bevel gear (10-4), a cutter holder (10-5) and a blade (10-6); the middle part of the inner tube body (1) is rotatably provided with a first rotating shaft (10-2) through a bearing, the front end of the first rotating shaft (10-2) is fixedly sleeved with a first driven bevel gear (10-4), the inside of the inner tube body (1) on the right side of the first rotating shaft (10-2) is fixedly provided with a driving motor (10-1) through a motor support, the output end of the driving motor (10-1) is fixedly connected with a driving bevel gear (10-3), and the left side of the driving bevel gear (10-3) is meshed with the first driven bevel gear (10-4); a cutter seat (10-5) is fixedly sleeved in the middle of the first rotating shaft (10-2), blades (10-6) are symmetrically and fixedly arranged on the front side and the rear side of the cutter seat (10-5), through grooves are symmetrically formed in the upper side and the lower side of the inner pipe body (1), and the blades (10-6) are rotatably arranged in the through grooves; the driving motor (10-1) is connected with an external power supply.
2. A vascular thrombus clearing system according to claim 1, wherein: a protective pad (11) is fixedly arranged on the outer side wall of the cutter holder (10-5); when the driving motor (10-1) drives the cutter holder (10-5) to rotate anticlockwise on the first rotating shaft (10-2), the protection pad (11) protects the interior of the blood vessel from being scratched by the outer side wall of the cutter holder (10-5).
3. A vascular thrombus clearing system according to claim 1, wherein: a placing groove (12) is fixedly arranged on the outer side wall of the inner tube body (1) at one side of the supporting air bag (5); when the supporting air bag (5) enters a blood vessel, the supporting air bag (5) is in an uninflated state, and the supporting air bag (5) is folded and placed inside the resting groove (12).
4. A vascular thrombus clearing system according to claim 1, wherein: the outer sides of the driving motor (10-1), the first driven bevel gear (10-4) and the driving bevel gear (10-3) are covered with a protective cover (13), the edge of the protective cover (13) is fixedly arranged on the inner side wall of the inner pipe body (1), and the first rotating shaft (10-2) is rotatably arranged on the side wall of the protective cover (13) in a penetrating manner through a bearing; after the thrombus is broken by the blades (10-6) and the tool apron (10-5), the thrombus is broken and scraped into the inner part of the inner pipe body (1) due to the counterclockwise rotation of the tool apron (10-5), and the protective cover (13) isolates the driving motor (10-1), the first driven bevel gear (10-4) and the driving bevel gear (10-3) from contacting with the external thrombus.
5. A vascular thrombus clearing system according to claim 4, wherein: a partition plate (14) is fixedly arranged in the inner pipe body (1) on the left side of the protective cover (13), a second rotating shaft (15) is symmetrically arranged on the front side and the rear side of the partition plate (14) in a penetrating mode through a bearing in a rotating mode, the left end of the second rotating shaft (15) penetrates through the left end of the inner pipe body (1) in a rotating mode through the bearing in a rotating mode, extends to the left side of the inner pipe body (1), and a spiral drill rod (16) is fixedly connected to the extending end of the second rotating shaft; straight gears (17) are fixedly sleeved on the second rotating shaft (15) on the left side of the partition plate (14), and the straight gears (17) on the front side and the rear side are meshed; the right end of a second rotating shaft (15) positioned on the front side penetrates through the side wall of the protective cover (13) through a bearing in a rotating mode, and then a second driven bevel gear (18) is fixedly connected with the right end of the second rotating shaft, and the second driven bevel gear (18) is meshed with the first driven gear; when the driving bevel gear (10-3) drives the first driven bevel gear (10-4) to rotate, the first driven bevel gear (10-4) drives the second driven bevel gear (18) to rotate, the second driven bevel gear (18) drives the second rotating shaft (15) to rotate, meanwhile, under the transmission action of the straight gear (17), the second rotating shafts (15) on the front side and the rear side move in opposite directions, the spiral drill rod (16) drills thrombus and moves forwards inside the thrombus, and the inner pipe body (1) can conveniently enter the inside of the thrombus.
6. A vascular thrombus clearing system according to claim 5, wherein: a rough layer (19) is fixedly arranged on the outer side surface of the spiral drill rod (16), and a medicament layer (20) is arranged on the rough layer (19); the rough layer (19) is formed by drug corrosion and post polishing, and the medicament layer (20) contains anti-restenosis and anti-inflammation drugs and acts on the inside of thrombus through the spiral drill rod (16).
7. A vascular thrombus clearing system according to claim 1, wherein: the working principle is as follows: the inner tube body (1) and the air guide main tube (2) are arranged in the outer guide tube (4) in a penetrating way, the inner tube body (1) is conveyed to the interior of a diseased blood vessel under the matching guide effect of the outer guide tube (4) and the guide wire (9), the outer guide tube (4) is withdrawn from the outer side of the inner tube body (1) after reaching a focus, the inner tube body (1) is exposed out of the outer side of the outer guide tube (4), then the guide wire (9) penetrates through thrombus, so that the inner tube body (1) is arranged in the thrombus, the support air bag (5) is arranged at one side of the thrombus, the support air bag (5) is filled with air through the external air pump, the air guide main tube (2) and the air guide branch tube (6), the support air bag (5) is supported on the inner wall of the blood vessel, the driving motor (10-1) is communicated with an external power supply, the output end of the driving motor (, as the driving bevel gear (10-3) is meshed with the driven bevel gear I (10-4), the driven bevel gear I (10-4) drives the rotating shaft I (10-2) to rotate, the rotating shaft I (10-2) drives the cutter holder (10-5) to rotate anticlockwise, the cutter blade (10-6) breaks thrombus in the high-speed rotating process, meanwhile, the thrombus is continuously brought into the inner part of the inner pipe body (1), and the slag suction pipe (7) is communicated with an external suction pump, so that the thrombus brought into the inner part of the inner pipe body (1) by the cutter holder (10-5) is sucked to the outer side of a blood vessel by the slag suction pipe (7).
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| CN202010820563.0A CN111904538B (en) | 2020-08-14 | 2020-08-14 | Thrombus dredging system for blood vessel |
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| CN202010820563.0A CN111904538B (en) | 2020-08-14 | 2020-08-14 | Thrombus dredging system for blood vessel |
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