CN106901799B - A kind of thrombectomby system, preparation method and working method - Google Patents
A kind of thrombectomby system, preparation method and working method Download PDFInfo
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- CN106901799B CN106901799B CN201710242265.6A CN201710242265A CN106901799B CN 106901799 B CN106901799 B CN 106901799B CN 201710242265 A CN201710242265 A CN 201710242265A CN 106901799 B CN106901799 B CN 106901799B
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- microtubular
- filter screen
- atherectomy catheter
- elastic filter
- seal 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
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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
- A61B2017/00526—Methods of manufacturing
-
- 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
- A61B17/22—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
- A61B2017/22094—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 for crossing total occlusions, i.e. piercing
Abstract
The invention discloses a kind of thrombectomby system, preparation method and working methods, wherein thrombectomby system includes atherectomy catheter, microtubular and elastic filter screen；Contain bung flange in the atherectomy catheter, microtubular protrudes into atherectomy catheter and is arranged in the center of bung flange；The end of the atherectomy catheter also sets up the cylinder there are two mutual fitting, respectively outer cylinder and inner cylinder；Outer cylinder is a rotor and is fixedly connected with bung flange that inner cylinder is attached on atherectomy catheter；One end of elastic filter screen is fixed on microtubular, and the other end is connected with seal wire；The elasticity filter screen, microtubular, bung flange and atherectomy catheter coaxial arrangement, the seal wire are set to the axis center position of elastic filter screen, microtubular, bung flange and atherectomy catheter；When elastic filter screen and microtubular pass through thrombus, draw seal wire, traction seal wire struts elastic filter screen, to have the function that filtering blood；Seal wire, elastic filter screen reinstatement state are decontroled after the completion of thrombus cutting.
Description
Technical field
The invention belongs to medical device field more particularly to a kind of thrombectomby systems, preparation method and working method.
Background technique
For embolism lesion, clinically generally bolt is taken to be treated with machinery using drug thrombolysis, since drug thrombolysis is tight
Time window limitation and the more complication of lattice, most of patient can take the mechanical therapeutic modality for taking bolt.
Existing machinery takes bolt all to have a disadvantage that substantially: the patch being likely to occur during thrombectomby falls off or blood
Distal end " rubbish foot " caused by stud portion falls off, is caused after taking bolt, the thrombus fragment to fall off cannot recycle completely to be excreted, can
It can cause pulmonary embolism.Therefore a kind of machinery is needed to take pin device that can effectively release the spot being likely to occur during thrombectomby
Block fall off or thrombus partial exfoliation caused by distal end " rubbish foot ", avoid the flowing of thrombus fragment from forming new thrombus, reinforcement pair
The interception of thrombus, reduces the generation of pulmonary embolism, while improving thrombus fragment elimination efficiency and safety.
Summary of the invention
In order to solve the disadvantage that the prior art, the first object of the present invention are to provide a kind of thrombectomby system, the system
It can be avoided the possibility that patch falls off or thrombus partial exfoliation causes distal end " rubbish foot " to occur during thrombectomby, improve blood
Bolt fragment elimination efficiency and safety.
A kind of thrombectomby system of the invention, including atherectomy catheter, microtubular and elastic filter screen；
Contain bung flange in the atherectomy catheter, microtubular protrudes into atherectomy catheter and is arranged in the center of bung flange；The rotation
The end of incisal guide pipe also sets up the cylinder there are two mutual fitting, respectively outer cylinder and inner cylinder；Outer cylinder is a rotor and and bung flange
It is fixedly connected, inner cylinder is attached on atherectomy catheter；
One end of elastic filter screen is fixed on microtubular, and the other end is connected with seal wire；The elasticity filter screen micro- is led
Pipe, bung flange and atherectomy catheter coaxial arrangement, the seal wire are set to the axis of elastic filter screen, microtubular, bung flange and atherectomy catheter
Center；When elastic filter screen and microtubular pass through thrombus, draw seal wire, traction seal wire struts elastic filter screen, from
And have the function that filtering blood；Seal wire, elastic filter screen reinstatement state are decontroled after the completion of thrombus cutting.
Further, the hardness subsection setup of the microtubular, hardness is along axial direction by the head end terminad of atherectomy catheter
Direction softens gradually.
The present invention by by the hardness subsection setup of microtubular, the hardness of microtubular along axial direction from the head end of atherectomy catheter to
End direction softens gradually, in this way after microtubular enters thrombus area, prevents the hardness due to microtubular really up to the mark, and damages packet
The blood vessel for enclosing thrombus improves the safety for removing thrombus in blood vessel.
Further, the head end of the atherectomy catheter is connected by electromagnetic clutch with power mechanism.
Wherein, electromagnetic clutch controlled by the power on/off of coil the engagement of clutch with separate.Electromagnetic clutch can divide
Are as follows: dry single-disk electromagnetic clutch, dry-type multidisc electromagnetic clutch, wet type multi-disc electromagnetic clutch, magnetic powder cluth, slip type
Electromagnetic clutch etc..Electromagnetic clutch working method can be divided into again: being powered to combining and power off combines.The characteristics of electromagnetic clutch
It is: (1) high-speed response: because being dry type class the reception and registration of torsion quickly, can achieve convenient and fast movement.(2) durability is strong:
Heat dispersal situations are good, and have used advanced material, even high-frequency, the use of high-energy is also very durable.(3) group
Dress maintenance is easy: belonging to the static shape of the built-in field coil of ball bearing, so carbon need not also be utilized by not needing to take out middle stamen
Brush, using simple.(4) movement is certain: using plate elastic slice, though there is sharp pounding also not generate loosening, durability is good.
Power mechanism can use motor or other actuating units.
Further, the aperture ratio close to elastic filter screen one end of microtubular is another far from the elastic filter screen of microtubular
Stomidium diameter is small.It will be caught by filter screen when there is part thrombus breaks loose to flow away with blood flow, be decontroled after the completion of thrombus cutting in this way
The thrombus clast of filtering is trapped in filter screen, just avoids thrombectomby process in this way by seal wire, filter screen reinstatement state
The possibility that middle patch falls off or thrombus partial exfoliation causes distal end " rubbish foot " to occur.
Further, the bung flange is stainless steel coil.Bung flange of the invention uses stainless steel coil, ensure that thrombus is cut
Except system is in use to the safety of blood vessel.
Further, the aperture close to elastic filter screen one end of microtubular is 0.1mm.It can guarantee thrombus clast in this way
It is trapped in filter screen, just avoids that patch during thrombectomby falls off or thrombus partial exfoliation causes distal end " rubbish in this way
The possibility that foot " occurs.
The second object of the present invention is to provide a kind of preparation method of thrombectomby system.
The preparation method of thrombectomby system of the invention, comprising:
It is arranged a microtubular in the outside of seal wire, and connects an elasticity filtering between one end and microtubular of seal wire
Net；
One end of microtubular is also arranged an atherectomy catheter, and bung flange is arranged in atherectomy catheter, the end of atherectomy catheter also
The cylinder of two mutual fittings, respectively outer cylinder and inner cylinder are set；Outer cylinder is that a rotor is fixedly connected on bung flange, and inner cylinder is attached to
On atherectomy catheter；
Elastic filter screen, microtubular, bung flange and atherectomy catheter are coaxially disposed, seal wire be located at elastic filter screen, microtubular,
The axis center position of bung flange and atherectomy catheter.
Further, this method further includes: hardness is along axial direction by atherectomy catheter by the hardness subsection setup of microtubular
Head end terminad direction softens gradually.
Further, this method further includes: will be close to the setting ratio of the pore size of elastic filter screen one end of microtubular
Elastic filter screen other end aperture far from microtubular is small.
The third object of the present invention is to provide a kind of working method of thrombectomby system.
The working method of thrombectomby system of the invention, comprising:
Step 1: when elastic filter screen and microtubular pass through thrombus, draw seal wire, traction seal wire supports elastic filter screen
It opens, to have the function that filtering blood；
Step 2: decontroling seal wire, elastic filter screen reinstatement state after the completion of thrombus cutting.
The invention has the benefit that
(1) present invention is set to bullet using elastic filter screen, microtubular, bung flange and the atherectomy catheter being coaxially disposed, seal wire
Property filter screen, microtubular, bung flange and atherectomy catheter axis center position, elastic filter screen and microtubular pass through thrombus, and traction is led
When silk, traction seal wire struts elastic filter screen, to have the function that filtering blood；Seal wire is decontroled after the completion of thrombus cutting,
Elastic filter screen reinstatement state, can be avoided that patch during thrombectomby falls off or thrombus partial exfoliation causes distal end in this way
The possibility that " rubbish foot " occurs improves thrombus fragment elimination efficiency and safety.
(2) present invention is by the way that by the hardness subsection setup of microtubular, the hardness of microtubular is along axial direction by the head of atherectomy catheter
End terminad direction softens gradually, in this way after microtubular enters thrombus area, prevents the hardness due to microtubular really up to the mark, and damages
Wound surrounds the blood vessel of thrombus, improves the safety for removing thrombus in blood vessel.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present application, and the application's shows
Meaning property embodiment and its explanation are not constituted an undue limitation on the present application for explaining the application.
Fig. 1 is the form before elastic filter screen struts in the blood vessel；
Fig. 2 is the form that elastic filter screen struts front and back in the blood vessel；
Fig. 3 is the location drawing of elastic filter screen；
Fig. 4 is the structural schematic diagram of atherectomy catheter；
Fig. 5 is the preparation method flow chart of thrombectomby system of the invention；
Fig. 6 is the flow chart of work methods of thrombectomby system of the invention.
Wherein, 1, elastic filter screen；2, microtubular；3, atherectomy catheter；4, seal wire；5, bung flange.
Specific embodiment
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
As Figure 1-Figure 4, a kind of thrombectomby system of the invention, including atherectomy catheter, microtubular and elasticity filtering
Net.
Wherein, bung flange 5 is contained in atherectomy catheter 3, microtubular protrudes into atherectomy catheter 3 and is arranged in the center of bung flange 5；Institute
The end for stating atherectomy catheter 3 also sets up cylinder there are two mutual fitting, respectively outer cylinder and inner cylinder；Outer cylinder be a rotor and with
Bung flange 5 is fixedly connected, and inner cylinder is attached on atherectomy catheter 3；
As shown in Figure 3 and Figure 4, one end of elastic filter screen 1 is fixed on microtubular 2, and the other end is connected with seal wire 4；Institute
State elastic filter screen 1, microtubular 2, bung flange 5 and atherectomy catheter 3 are coaxially disposed, the seal wire 4 is set to elastic filter screen 1, micro-
The axis center position of conduit 2, bung flange 5 and atherectomy catheter 3；When elastic filter screen 1 and microtubular 2 pass through thrombus, traction seal wire 4
When, traction seal wire struts elastic filter screen, to have the function that filtering blood, as shown in Figure 2；It is put after the completion of thrombus cutting
Convince silk by patient analysis, elastic filter screen reinstatement state, as shown in Figure 1.
Wherein, the hardness subsection setup of microtubular 2, hardness along axial direction by atherectomy catheter 3 head end terminad direction gradually
Secondary softening.
The present invention by by the hardness subsection setup of microtubular, the hardness of microtubular along axial direction from the head end of atherectomy catheter to
End direction softens gradually, in this way after microtubular enters thrombus area, prevents the hardness due to microtubular really up to the mark, and damages packet
The blood vessel for enclosing thrombus improves the safety for removing thrombus in blood vessel.
Wherein, the head end of atherectomy catheter 3 is connected by electromagnetic clutch with power mechanism.
Electromagnetic clutch controlled by the power on/off of coil the engagement of clutch with separate.Electromagnetic clutch can be divided into: dry
Formula monolithic electromagnetic clutch, dry-type multidisc electromagnetic clutch, wet type multi-disc electromagnetic clutch, magnetic powder cluth, slip type electromagnetism
Clutch etc..Electromagnetic clutch working method can be divided into again: being powered to combining and power off combines.
The characteristics of electromagnetic clutch, is: (1) high-speed response: because be dry type class the reception and registration of torsion quickly, Ke Yida
To convenient and fast movement.(2) durability is strong: heat dispersal situations are good, and have used advanced material, even high-frequency, high energy
The use of amount, it is also very durable.(3) assembling maintenance is easy: belonging to the static shape of the built-in field coil of ball bearing, so being not required to
Middle stamen, which is taken out, need not also utilize carbon brush, using simple.(4) movement is certain: plate elastic slice is used, though there is not sharp pounding also not
Loosening can be generated, durability is good.
Power mechanism can use motor or other actuating units.
In the present embodiment, the aperture ratio close to 1 one end of elastic filter screen of microtubular 2 is far from the elastic mistake of microtubular 2
1 other end aperture of strainer is small.
It will be caught in this way by filter screen when there is part thrombus breaks loose to flow away with blood flow, decontrol and lead after the completion of thrombus cutting
Silk, the thrombus clast of filtering is trapped in filter screen by filter screen reinstatement state, during just avoiding thrombectomby in this way
The possibility that patch falls off or thrombus partial exfoliation causes distal end " rubbish foot " to occur.
In the present embodiment, bung flange 5 is stainless steel coil.Bung flange 5 of the invention uses stainless steel coil, ensure that thrombus
Excision system is in use to the safety of blood vessel.
In the present embodiment, the aperture close to 1 one end of elastic filter screen of microtubular 2 is 0.1mm.It can guarantee blood in this way
Bolt clast is trapped in filter screen, just avoids that patch during thrombectomby falls off or thrombus partial exfoliation causes distal end in this way
The possibility that " rubbish foot " occurs.
The present invention is set to elastic mistake using elastic filter screen, microtubular, bung flange and the atherectomy catheter being coaxially disposed, seal wire
The axis center position of strainer, microtubular, bung flange and atherectomy catheter, elastic filter screen and microtubular pass through thrombus, when drawing seal wire,
Traction seal wire struts elastic filter screen, to have the function that filtering blood；Seal wire, elastic mistake are decontroled after the completion of thrombus cutting
Strainer reinstatement state, can be avoided that patch during thrombectomby falls off or thrombus partial exfoliation causes distal end " rubbish in this way
The possibility that foot " occurs improves thrombus fragment elimination efficiency and safety.
The present invention by by the hardness subsection setup of microtubular, the hardness of microtubular along axial direction from the head end of atherectomy catheter to
End direction softens gradually, in this way after microtubular enters thrombus area, prevents the hardness due to microtubular really up to the mark, and damages packet
The blood vessel for enclosing thrombus improves the safety for removing thrombus in blood vessel.
Fig. 5 is the preparation method flow chart of thrombectomby system of the invention.
As shown in figure 5, the preparation method of thrombectomby system of the invention, comprising:
It is arranged a microtubular in the outside of seal wire, and connects an elasticity filtering between one end and microtubular of seal wire
Net；
One end of microtubular is also arranged an atherectomy catheter, and bung flange is arranged in atherectomy catheter, the end of atherectomy catheter also
The cylinder of two mutual fittings, respectively outer cylinder and inner cylinder are set；Outer cylinder is that a rotor is fixedly connected on bung flange, and inner cylinder is attached to
On atherectomy catheter；
Elastic filter screen, microtubular, bung flange and atherectomy catheter are coaxially disposed, seal wire be located at elastic filter screen, microtubular,
The axis center position of bung flange and atherectomy catheter.
Further, this method further includes: hardness is along axial direction by atherectomy catheter by the hardness subsection setup of microtubular
Head end terminad direction softens gradually.
Further, this method further includes: will be close to the setting ratio of the pore size of elastic filter screen one end of microtubular
Elastic filter screen other end aperture far from microtubular is small.
Fig. 6 is the flow chart of work methods of thrombectomby system of the invention.
As shown in fig. 6, the working method of thrombectomby system of the invention, comprising:
Step 1: when elastic filter screen and microtubular pass through thrombus, draw seal wire, traction seal wire supports elastic filter screen
It opens, to have the function that filtering blood；
Step 2: decontroling seal wire, elastic filter screen reinstatement state after the completion of thrombus cutting.
Above-mentioned, although the foregoing specific embodiments of the present invention is described with reference to the accompanying drawings, not protects model to the present invention
The limitation enclosed, those skilled in the art should understand that, based on the technical solutions of the present invention, those skilled in the art are not
Need to make the creative labor the various modifications or changes that can be made still within protection scope of the present invention.
Claims (7)
1. a kind of thrombectomby system, which is characterized in that including atherectomy catheter, microtubular and elastic filter screen；
Contain bung flange in the atherectomy catheter, microtubular protrudes into atherectomy catheter and is arranged in the center of bung flange；The rotary-cut is led
The end of pipe also sets up the cylinder there are two mutual fitting, respectively outer cylinder and inner cylinder；Outer cylinder is a rotor and fixes with bung flange
Connection, inner cylinder are attached on atherectomy catheter；
One end of elastic filter screen is fixed on microtubular, and the other end is connected with seal wire；The elasticity filter screen, microtubular, spiral shell
Circle and atherectomy catheter coaxial arrangement, the seal wire are set to the axis center position of elastic filter screen, microtubular, bung flange and atherectomy catheter
It sets；When elastic filter screen and microtubular pass through thrombus, draw seal wire, traction seal wire struts elastic filter screen, to reach
The effect of filtering blood；Seal wire, elastic filter screen reinstatement state are decontroled after the completion of thrombus cutting；
The hardness subsection setup of the microtubular, hardness are softened along axial direction by the head end terminad direction of atherectomy catheter gradually；
Aperture ratio close to elastic filter screen one end of microtubular is small far from the elastic filter screen other end aperture of microtubular.
2. a kind of thrombectomby system as described in claim 1, which is characterized in that the head end of the atherectomy catheter passes through electromagnetism
Clutch connects with power mechanism.
3. a kind of thrombectomby system as described in claim 1, which is characterized in that the bung flange is stainless steel coil.
4. a kind of thrombectomby system as described in claim 1, which is characterized in that close to elastic filter screen one end of microtubular
Aperture be 0.1mm.
5. a kind of preparation method of such as thrombectomby system of any of claims 1-4 characterized by comprising
Step 1: being arranged a microtubular in the outside of seal wire, and connect an elasticity filtering between one end and microtubular of seal wire
Net；
Step 2: one end of microtubular is also arranged an atherectomy catheter, and bung flange is arranged in atherectomy catheter, in the end of atherectomy catheter
Also set up the cylinder of two mutual fittings, respectively outer cylinder and inner cylinder；Outer cylinder is that a rotor is fixedly connected on bung flange, and inner cylinder is attached
On atherectomy catheter；
Step 3: elastic filter screen, microtubular, bung flange and atherectomy catheter being coaxially disposed, seal wire is located at elastic filter screen, micro- leads
The axis center position of pipe, bung flange and atherectomy catheter.
6. a kind of preparation method of thrombectomby system as claimed in claim 5, which is characterized in that this method further include: will
The hardness subsection setup of microtubular, hardness are softened along axial direction by the head end terminad direction of atherectomy catheter gradually.
7. a kind of preparation method of thrombectomby system as claimed in claim 5, which is characterized in that this method further include: will
Close to the elastic filter screen other end aperture of the pore size of elastic filter screen one end of microtubular being arranged than separate microtubular
It is small.
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| CN201710242265.6A CN106901799B (en) | 2017-04-12 | 2017-04-12 | A kind of thrombectomby system, preparation method and working method |
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| CN201710242265.6A CN106901799B (en) | 2017-04-12 | 2017-04-12 | A kind of thrombectomby system, preparation method and working method |
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| CN106901799B true CN106901799B (en) | 2019-04-09 |
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| CN207462124U (en) * | 2017-04-12 | 2018-06-08 | 山东大学 | A kind of thrombectomby system |
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| CN102688093B (en) * | 2012-06-20 | 2014-08-27 | 深圳市惠泰医疗器械有限公司 | Renal artery cold saline water radio frequency ablation controllable electrode catheter |
| CN104622538A (en) * | 2015-03-12 | 2015-05-20 | 湖南瑞康通科技发展有限公司 | Thrombus excision system |
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|---|---|---|---|---|
| US5876414A (en) * | 1995-03-28 | 1999-03-02 | Straub Medical Ag | Catheter for detaching abnormal deposits from blood vessels in humans |
| CN101123918A (en) * | 2004-03-04 | 2008-02-13 | 施特劳勃医疗器械股份公司 | Catheter for sucking, fragmenting removing material extractable from blood vessels |
| CN102327139A (en) * | 2006-06-30 | 2012-01-25 | 阿瑟罗迈德公司 | Atherectomy device |
| CN102014773A (en) * | 2008-04-23 | 2011-04-13 | 阿维格公司 | Catheter system and method for boring through blocked vascular passages |
| CN102499734A (en) * | 2011-11-17 | 2012-06-20 | 祖茂衡 | Remover for thrombus in stents |
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