CN107496006A - Take thrombus support - Google Patents
Take thrombus support Download PDFInfo
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- CN107496006A CN107496006A CN201710867387.4A CN201710867387A CN107496006A CN 107496006 A CN107496006 A CN 107496006A CN 201710867387 A CN201710867387 A CN 201710867387A CN 107496006 A CN107496006 A CN 107496006A
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- rack body
- distal end
- thrombus
- silk
- support
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/22—Implements for squeezing-off ulcers or the like on inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; for invasive removal or destruction of calculus using mechanical vibrations; for removing obstructions in blood vessels, not otherwise provided for
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/86—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
- A61F2/90—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure
- A61F2/91—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheets or tubes, e.g. perforated by laser cuts or etched holes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/95—Instruments specially adapted for placement or removal of stents or stent-grafts
- A61F2/958—Inflatable balloons for placing stents or stent-grafts
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/95—Instruments specially adapted for placement or removal of stents or stent-grafts
- A61F2/962—Instruments specially adapted for placement or removal of stents or stent-grafts having an outer sleeve
- A61F2/966—Instruments specially adapted for placement or removal of stents or stent-grafts having an outer sleeve with relative longitudinal movement between outer sleeve and prosthesis, e.g. using a push rod
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2250/0058—Additional features; Implant or prostheses properties not otherwise provided for
- A61F2250/0067—Means for introducing or releasing pharmaceutical products into the body
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2250/0058—Additional features; Implant or prostheses properties not otherwise provided for
- A61F2250/0096—Markers and sensors for detecting a position or changes of a position of an implant, e.g. RF sensors, ultrasound markers
- A61F2250/0098—Markers and sensors for detecting a position or changes of a position of an implant, e.g. RF sensors, ultrasound markers radio-opaque, e.g. radio-opaque markers
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Animal Behavior & Ethology (AREA)
- Transplantation (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Cardiology (AREA)
- Surgery (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Materials For Medical Uses (AREA)
Abstract
The present invention provides one kind and takes thrombus support, including：Conveying lever；Rack body, rack body is connected with conveying lever, rack body is formed as the webmaster shape being woven into by silk material, rack body includes rack body near-end, rack body distal end and connecting bracket proximal and the rack body middle part of rack body distal end, wherein, diameter in the middle part of rack body is less than the diameter of rack body near-end and the diameter of rack body distal end, and rack body near-end is formed as open wedge shape.Therefore, the embodiment of the present invention takes thrombus support, and thrombus is easier incarceration portion in the bracket, and during thrombus is pulled, rack far end and mount proximal end can encase the microthrombus of peeling, avoids microthrombus from blocking distal end or proximal vessel.Grid is more than support both ends grid in the middle part of rack body and rack body mid diameter is small, and exactly incarceration leaves space in the thrombus of rack body, and main body mid portion radial load is moderate, will not arterial intima during pulling thrombus.
Description
Technical field
The present invention relates to a kind of medicine equipment, and thrombus support is taken more particularly to one kind.
Background technology
In human vas, the supply blood vessel especially in coronary artery region, deposit, Atherosclerosis are frequently present of
Change the obturators such as patch, grumeleuse.These obturators may block or interrupt blood flow.The supply blood vessel of coronary artery arteriosomes
It is middle above-mentioned obturator occur, serious sequelae is may result in, is such as blocked.In the therapeutic process to such patient, quickly
It is essential therapeutic progresses to eliminate these obturators.The apoplexy as caused by the thrombus in the cerebrovascular is that most serious endangers the mankind
The refractory disease of health and lives safety, according to the annual patient with cerebral apoplexy that occurs of statistics China up to 3,000,000, annual stroke patient
Dead 1,200,000.For the patient for the headstroke for being sent to hospital in time, conventional therapeutic scheme is medicine thrombolysis, but medicine is molten
The optimal window time of bolt (disease be dealt into the time to obtain medical treatment) is within 4 hours, and so short thrombolysis time window causes only
There is the patient less than 10% to obtain effective thromboembolism treatment；Secondly, medicine thrombolysis is substantially invalid for larger thrombus.To understand
Certainly the problem of said medicine thrombolysis, machinery has eliminated the method for thromboembolism (Mechanical Thrombectomy Device)
As study hotspot in recent years.
In the prior art, it has been disclosed that machinery as described below takes pin device：
The Patent No. CN101340849A patent of invention " being used for the device that removing thrombus is removed from blood vessel " disclosed in China
In, one distal member with the fiber extended radially out is taken in wherein by a caged or tubular structure, and
With the help of fiber thrombus is safely eliminated from intravascular.
The Patent No. CN101396295A patent of invention " Intravascular Thrombus and embolus resectoscope " disclosed in China
In, there is the thrombectomy device of thrombectomby spring and in shrinking or the basket of release conditions, basket are located at thrombectomby
The distal end of device, thrombus is arrested by the winding of thrombectomby spring, and caused clot and blood during bolt will be taken with basket
Bolt fragment takes out to protect the distal end of blood vessel together.
The Patent No. US7931659B2 of U.S. Publication patent of invention describe with one be fixed on one it is elongated
Extension pipe end the receiver that hollow tubular is surrounded by by more filaments, receiver is placed in by blood vessel embolism by extension tube
Position, and thrombus income to the hollow intracavitary of receiver is taken out external.
In the Patent No. US2006/0047286A1 of U.S. Publication patent of invention " Clot Retriever Device "
In, have one be fixed on the expansible of pusher end and shrink recovery basket, have thereon one can be by being fixed on net
The wire of basket end controls the opening being opened and closed thrombus is captured in basket.
Various machineries described above take pin device, following defect be present：
1) the characteristics of these supports are common is that support has uniform lattice structure, and rack body captures main part after thrombus
Sub-stent is by excessive compression, so as to which main part radial load is excessive, the easy arterial intima when pulling thrombus；
2) the characteristics of these supports are common is that support total length diameter is consistent, when capturing thrombus and withdrawing support, small blood
Bolt easily comes off and flows to small distal blood vessels or proximal vessel, increases considerably operating difficulty or even jeopardizes patient vitals.
3) taking thrombus support, only rack far end and near-end are visual under X ray, and rack body is not visible, is being propped up
When frame is by bending radius big blood vessel, doctor can not judge whether support has occurred and that bending (continues to pull in such cases
Support will cause cerebrovascular major injury, or even jeopardize patients ' lives)；
The content of the invention
It is contemplated that at least solving one of above-mentioned technical problem to a certain extent, the present invention provides one kind and takes thrombus branch
Frame.
In order to solve the above technical problems, the present invention uses following technical scheme：
It is according to embodiments of the present invention to take thrombus support, including：
Conveying lever；
Rack body, the rack body are connected with the conveying lever, and the rack body is formed as being woven into by silk material
Webmaster shape, the rack body include rack body near-end, rack body distal end and the connection rack body near-end with
In the middle part of the rack body of the rack body distal end, wherein, it is near that the diameter in the middle part of the rack body is less than the rack body
The diameter at end and the diameter of the rack body distal end, the rack body near-end are formed as open wedge shape.
According to embodiments of the present invention to take thrombus support, the diameter in the middle part of rack body is less than rack body near-end and support
The diameter of body distal end, therefore, thrombus are easier incarceration portion in the bracket, and during thrombus is pulled, rack body is remote
End and rack body near-end can encase the microthrombus of peeling, avoid blocking distal end minute blood vessel or distal vessels.
According to some embodiments of the present invention, the distal end of the conveying lever and the rack body proximally by clamp, it is viscous
The mode connect, being soldered or welded connects.
Further, the distal end of the conveying lever is formed as from the near-end of the conveying lever towards the distal end of the conveying lever
The taper that diameter is gradually reduced on direction.
Be formed as the distal end of the conveying lever of taper more easily can be such that conveying lever is separated with rack body as needed.
Further, the distal end of the conveying lever is provided with the de- region of electrolysis, the conveying lever in addition to the de- region of the electrolysis
Surface is formed with superslide insulating barrier.
Thus, the de- region of electrolysis is provided with by the distal end of conveying lever, can utilize electrolysis mode by the distal end of conveying lever from
Rack body fuses to realize the separation of rack body and conveying lever, and rack body can be retained in patient's lesion.
Further, the superslide insulating barrier is formed by polytetrafluoroethylene (PTFE) or paraxylene.
According to some embodiments of the present invention, the silk material includes development silk, and the development silk contains developability material, institute
Developability material is stated to be selected from：Platinum or its alloy, gold or its alloy, tungsten or its alloy, tantalum or its alloy, stainless steel or cobalt
Evanohm.
Including the silk material of development silk makes rack body all visible, when support is by the big blood vessel of bending radius, such as
Fruit rack body is bent, and doctor can adjust rack body and avoid causing cerebrovascular inner film injury.
Further, the development silk also includes shell, and the shell is coated on the developability material, the shell
For Nitinol either stainless steel or cochrome.
Further, the silk material also includes false-twist textured yarn, and the false-twist textured yarn is nitinol alloy wire or cochrome silk.
According to some embodiments of the present invention, the size of mesh opening in the middle part of the rack body is more than or equal to the support master
The size of mesh opening of body near-end and the size of mesh opening of the rack body distal end.
Size of mesh opening in the middle part of rack body is more than the size of mesh opening of rack body near-end and the grid of rack body distal end
It is easy to fall off to be dimensioned such that rack body thrombus when pulling thrombus is not allowed.
According to some embodiments of the present invention, the rack body near-end is collected in developing ring or development turn, described
Developing ring or development turn are connected with the conveying lever.
According to some embodiments of the present invention, the silk material forms multi beam near-end silk, multi beam in the rack body near-end
The near-end silk is connected with developability control silk, and the control silk concatenates with tightening up silk, described to tighten up silk and the conveying lever phase
Even.
In order to improve the adaptability of support, support the use the pipe that is transported to that support is easier and size is less than normal, according to this
Some embodiments of invention, the rack body distal end is open, and the braiding nodes of the rack body distal end are less than described
Braiding nodes in the middle part of rack body.It is open to be additionally, since rack body distal end, for narrow vessel segment, also may be used
With indwelling.
Further, it is diameter edge that the rack body distal end, which forms dumb-bell shape and either distally forms hemispherical or distal end,
The umbrella gradually increased away from rack body distal end.
According to some embodiments of the present invention, the rack body distal end closes, and the silk material is remote in the rack body
End forms distal end tow, and the distal end tow is collected in developing ring, development turn or polymer tube.Preferably, the height
The hardness of molecule pipe is no more than 55D.
The support of rack body distal end closure can pipette that quality is more hard and larger-size thrombus.Specifically,
Rack body distal end can be protruded into thrombus to be transformed into the less thrombus of size, and less thrombus is easier to pipette,
The injury to endangium can be greatly lowered.In addition, by using developing ring, development turn or hardness no more than 55D's
Polymer tube, for the very thin distal end cerebrovascular, it will not also cause to damage, and the distal end of existing rack body is usually metal
Part, which limits its application in cerebrovascular distal end.
Further, the rack body distal end closed globulate.
Further, the polymer tube is along the axially extending of the rack body.
Further, the polymer tube contains developability metal powder.
According to some embodiments of the present invention, the surface of the rack body is formed with medication coat.
Further, the medication coat contains anticoagulant, antiplatelet drug, heparin, the medicine of anti-angiogenic ISR
In one or more.
One of above-mentioned technical proposal of the present invention, at least have the advantages that：
1) diameter in the middle part of rack body is less than rack body near-end and the diameter of rack body distal end, and therefore, thrombus is more
Easy incarceration portion, and during thrombus is pulled in the bracket, rack far end and mount proximal end can be by the microthrombuses of peeling
Encase, avoid blocking distal vessels or proximal vessel.
2) size of mesh opening is more than rack body both ends size of mesh opening in the middle part of rack body and rack body mid diameter is small,
Exactly incarceration leaves space in the thrombus of rack body, and rack body radial load is moderate, will not be damaged during pulling thrombus
Endangium；
3) including the silk material of development silk makes rack body all visible, when support is by the big blood vessel of bending radius,
If rack body is bent, doctor can adjust backing positions in time and avoid causing cerebrovascular trauma.
4) rack body after removal of thromboses, if clinical need, can separate conveying lever with rack body from blood vessel, prop up
Frame is retained at blood vessel, with the blood vessel that enough expansions are narrow or block, it is ensured that blood flow is unobstructed.
Brief description of the drawings
Fig. 1 is to take structural representation of the thrombus support when pipetting thrombus according to some embodiments of the invention；
Fig. 2 is to take structural representation of the thrombus support in the case where expanding blood vessel state according to some embodiments of the invention；
Fig. 3 is the structural representation for taking thrombus support according to some embodiments of the invention；
Fig. 4 is to take thrombus supporting structure schematic diagram according to the embodiment of the present invention 1；
Fig. 5 is to take thrombus supporting structure schematic diagram according to the embodiment of the present invention 2.
Fig. 6 is the structural representation for taking thrombus support according to the embodiment of the present invention 3.
Fig. 7 is another structural representation for taking thrombus support according to the embodiment of the present invention 3.
Reference：
Take thrombus support 100；
Rack body 10；Rack body near-end 11；12 (12a of rack body distal end；12b；12c)；13 in the middle part of rack body；
Near-end silk 14；Control silk 15；Tighten up silk 16；
Conveying lever 20；The distal end 21 of conveying lever；
Develop turn 30；
Thrombus 200；
Blood vessel 300.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
Accompanying drawing, the technical scheme of the embodiment of the present invention is clearly and completely described.Obviously, described embodiment is this hair
Bright part of the embodiment, rather than whole embodiments.Based on described embodiments of the invention, ordinary skill
The every other embodiment that personnel are obtained, belongs to the scope of protection of the invention.
Here, it should be noted that so-called " distal end " refers to the remote operator side in the operation for take thrombus
One end, so-called " near-end " are proximate to one end of operator side.
According to embodiments of the present invention takes thrombus support 100, including conveying lever 20 and rack body 10.
Specifically, rack body 10 is connected with conveying lever 20, and rack body 10 is formed as the webmaster shape being woven into by silk material,
Rack body 10 includes rack body near-end 11, rack body distal end 12 and connecting bracket proximal 11 and rack body
Distally 13 in the middle part of 12 rack body, wherein, 13 diameter is less than the diameter and branch of rack body near-end 11 in the middle part of rack body
The diameter of frame body distal end 12, rack body near-end 11 are formed as open wedge shape.
It should be noted that in order that rack body 10 smoothly enters or takes out blood vessel 300, the embodiment of the present invention takes blood
Bolt support 100 can be used cooperatively with induction system known in the art, and the induction system can include outer tube.
On the size for taking thrombus support 100 of the embodiment of the present invention, for example, the diameter of rack body 10 can be 1 millimeter
To 30 millimeters, the length of rack body 10 can be 5 millimeters to 200 millimeters.
As shown in figure 1, when taking thrombus 200, rack body near-end 11 is formed the thrombus support 100 that takes of the embodiment of the present invention
Be advantageous to for open wedge shape adherent with blood vessel 300.Because in the middle part of rack body 13 diameter is less than the He of rack body near-end 11
The diameter of rack body distal end 12, therefore, when rack body 10 encases thrombus 200, thrombus 200 is easier incarceration in support
It is interior.Exemplified by treating acute cerebral stroke, the outer tube for taking thrombus support 100 that doctor is pressed with inside the embodiment of the present invention is slow
Thrombus 200 was pushed, the near-end for the conveying lever 20 being fixed together with rack body 10 is then pinned, slowly withdraws outer tube, this
Sample rack body 10 is just released, and now slowly withdraws conveying lever 20, and thrombus 200 is finally sent to the bigger outer tube of internal diameter
It is interior, the guiding tube with thrombus 200 is withdrawn from patient body.After thrombus 200 takes out, the dredging of patient's blood flow, the distal end cerebrovascular
Blood supply, symptom resolution are obtained with tissue.
Except taking thrombus 200, the embodiment of the present invention takes thrombus support 100 to expand blood vessel 300.For example, such as Fig. 2
It is shown, doctor inside be pressed with the embodiment of the present invention take thrombus support 100 induction system outer tube slowly pushed it is narrow
At blood vessel 300, the near-end for the conveying lever 20 being fixed together with rack body 10 is then pinned, outer tube is slowly withdrawn, now props up
Frame body distal end 12 starts gradually to be released, and narrow blood vessel 300 is expanded, patient's blood flow is dredged at once, and symptom is delayed
Solution.If doctor is unsatisfied with to the position of rack body 10, rack body 10 can be recalled outer tube, readjust outer tube position,
Then rack body 10 is discharged again, until being placed in the middle part of rack body 13 at narrow blood vessel 300.Then make support master
Body 10 and conveying lever 20 separate, the indwelling patient's lesion of rack body 10, and it is more accurate that the release of rack body 10 is easier.
According to some embodiments of the present invention, the distal end 21 of conveying lever with rack body near-end 11 by clamping, it is be bonded, weld
Connect or the mode of welding connects.
According to some embodiments of the present invention, the distal end 21 of conveying lever is formed as from the near-end of conveying lever 20 towards conveying lever
The direction of distal end 21 on the taper that is gradually reduced of diameter.
Specifically, for example, the diameter for removing the main body of conveying lever 20 of the distal end 21 of conveying lever can be 0.3 millimeter to 2 millis
Rice, the diameter of the distal end 21 of conveying lever can be 0.05 millimeter to 1 millimeter, and the entire length of conveying lever 20 can be for 20 centimetres extremely
300 centimetres.
According to other embodiments of the present invention, the distal end 21 of conveying lever is provided with the de- region of electrolysis, in addition to the de- region of electrolysis
The surface of conveying lever 20 is formed with superslide insulating barrier.The superslide insulating barrier can be the coating that superslide insulating materials is formed, can also
It is film formed the methods of passing through evaporation etc..
Specifically, for example, by electrolysis mode, the distal end 21 of conveying lever is blown, so as to rack body 10 and conveying lever
20 separation, the indwelling patient's lesion of rack body 10.
According to some embodiments of the present invention, superslide insulating barrier is by polytetrafluoroethylene (PTFE) (PTFE) or paraxylene
(Parylene) formed.
According to some embodiments of the present invention, silk material includes development silk, and development silk contains developability material, developability material
It is selected from：Platinum or its alloy, gold or its alloy, tungsten or its alloy, tantalum or its alloy, stainless steel or cochrome.
Further, development silk also includes shell, and shell is coated on developability material, and shell is for Nitinol or not
Become rusty steel or cochrome.
Development silk refers to visual development silk under X-ray line.The development silk can be the silk that above-mentioned developability material is formed
Material, Nitinol can also be coated in above-mentioned developability material and form compound developability silk material.
According to some embodiments of the present invention, silk material also includes false-twist textured yarn, and false-twist textured yarn is nitinol alloy wire or cochrome
Silk.
Specifically, rack body 10 can be formed by more false-twist textured yarns and single or more development silk mixed weaving, can
To select hand woven or machine to weave and form, wherein, interlaced two silks are the free skating of no restriction at node
Dynamic bridging arrangement.
According to some embodiments of the present invention, 13 size of mesh opening is more than or equal to rack body near-end in the middle part of rack body
The size of mesh opening of 11 size of mesh opening and rack body distal end 12.
Specifically, the size of mesh opening for forming in the middle part of rack body 13 is 0.5 millimeter to 5 millimeters.
13 size of mesh opening is more than size of mesh opening and the rack body distal end 12 of rack body near-end 11 in the middle part of rack body
Size of mesh opening can not allow the thrombus when pulling thrombus of rack body 10 easy to fall off.
According to some embodiments of the present invention, rack body near-end 11 is collected in developing ring or development turn 30, development
Ring or development turn 30 are connected with conveying lever 20.
According to some embodiments of the present invention, silk material forms multi beam near-end silk, multi beam near-end silk in rack body near-end 11
It is connected with developability control silk, control silk concatenates with tightening up silk, tightens up silk and is connected with conveying lever 20.
Specifically, tightening up silk can be connected by way of welding with conveying lever 20.
According to some embodiments of the present invention, rack body distal end 12 opens, and the braiding node of rack body distal end 12
Braiding nodes of the number less than in the middle part of rack body 13.
Specifically, as shown in figure 3, the braiding nodes of the end of rack body distal end 12 are less than in the middle part of rack body 13
Braiding nodes can improve the adaptability of support, support the use the pipe that is transported to that support is easier and size is less than normal.
Further, either distal end forms hemispherical or distally remote for diameter edge to the formation dumb-bell shape of rack body distal end 12
The umbrella gradually increased from rack body distal end 12.
According to some embodiments of the present invention, 12 closed globulates of rack body distal end, silk material is in rack body distal end
12 form distal end tow, and distal end tow collects is no more than 55D in developing ring, development turn 30 or polymer tube, such as hardness
Polymer tube in.
Specifically, the rack body distal end 12 of closure can be protruded into thrombus to be transformed into the less thrombus of size,
Less thrombus is easier to pipette, and the injury to endangium can also be greatly lowered.Distal end tow collects to be no more than in hardness
Rack body 10 in 55D polymer tube can avoid the damage to distal vessels.
According to some embodiments of the present invention, polymer tube is axially extending along rack body 10.
According to some embodiments of the present invention, polymer tube contains developability metal powder.
According to some embodiments of the present invention, the surface of rack body 10 is formed with medication coat.
According to some embodiments of the present invention, medication coat contain anticoagulant, antiplatelet drug, heparin, it is anti-angiogenic again
One or more in narrow medicine.
With reference to specific embodiment, the present invention will be further described, it is to be understood that the present invention is not limited to
Following examples：
Embodiment 1
As shown in figure 4, the thrombus support 100 that takes of the present embodiment includes conveying lever 20 and rack body, rack body 10 with
Conveying lever 20 is connected, and rack body 10 is formed by false-twist textured yarn and development silk mixed weaving, and it is near that rack body 10 includes rack body
End 11, rack body distal end 12a and connecting bracket proximal 11 and in the middle part of rack body distal end 12a rack body 13,
Wherein, 13 diameter is less than the diameter of rack body near-end 11 and rack body distal end 12a diameter, support in the middle part of rack body
Proximal 11 is formed as open wedge shape, and rack body distal end 12a is formed as open dumbbell shaped.Rack body distal end 12a
The braiding node support that weaves nodes less than in the middle part of rack body 13.Other knots for taking thrombus support 100 of the present embodiment
Structure can select any one of above-described embodiment.
The present embodiment takes thrombus support 100 to be prepared by following methods：
Plurality of specifications (different-diameter and length) can be needed according to clinic, a metal cylinder is processed into and support
The very close mould of size shape, its near-end wedging, a plurality of parallel groove is processed according to design on mould, in mould
The groove spacing of section is more than both ends groove spacing.Take more false-twist textured yarns and a side that silk is staggeredly passed through with forward-reverse spiral line of developing
Formula, it is woven into that near-end is wedge shaped, and stage casing is round tube shape along groove winding, and distal end takes thrombus support for dumbbell shape
100.The support that the braiding node of rack far end weaves nodes less than in the middle part of rack body 13.Such structure is received beneficial to support
Beam is in less outer tube.Thrombus support 100 and its mould will be taken to be put into baking oven and carry out thermal finalization.Using Ultimum Ti as
Example, for heat setting temperature between 450 DEG C Celsius~550 DEG C, the time is 2 to 30 minutes.Then by rack body near-end 11
Collect into a development turn 30.Conveying lever 20, turn, mount proximal end silk are finally passed through into welding or ultraviolet solid
Change glue to be fixed together, that is, be fabricated to shown in Fig. 1 and take thrombus support 100.
Embodiment 2
As shown in figure 5, the rack body near-end 11 for taking thrombus support 100 of the present embodiment is formed as open wedge shape, branch
Frame body distal end 12b is formed as the spherical of closing.
Rack far end silk collect in one develop turn 30 in, the silk material of rack body near-end 11 weld two-by-two to be formed it is more
Shu Jinduan silks, the multi beam near-end silk control silk stronger with developability are connected, and control silk tightens up silk string made of tungsten filament material again
Connect, tighten up silk and conveying lever 20 welds.
The present embodiment take thrombus support 100 other structures can select above-described embodiment any one.
The present embodiment takes thrombus support 100 to be prepared by following methods：Plurality of specifications can be needed according to clinic (no
With diameter and length), it is spheroidal that a metal cylinder, which is processed into the very close distal end of the size shape of rack body 10,
Mould, its near-end wedging.On mould a plurality of parallel groove is processed according to design.Take more false-twist textured yarns and two developments
Silk is woven into that near-end is wedge shaped, and stage casing is round tube shape, and remote in a manner of forward-reverse spiral line staggeredly passes through, along groove winding
Hold the rack body 10 for ball shape.Support master and its mould are put into baking oven and carry out thermal finalization.Using memorial alloy as example,
For heat setting temperature between 450 DEG C~550 DEG C, the time is 2 to 30 minutes.Silk material diameter and stent diameter are smaller, during sizing
Between it is shorter.Then mount proximal end silk is collected into a development turn 30.Finally by support conveying lever 20, turn branch
Frame near-end silk, by welding or uv-curable glue be fixed together, that is, complete.
Embodiment 3
As shown in fig. 6, the rack body near-end 11 for taking thrombus support 100 of the present embodiment is formed as open wedge shape, branch
Frame body distal end 12c is formed as diameter along the umbrella gradually increased away from rack body distal end 12c.As shown in fig. 7, rack body
Near-end 11 forms multi beam near-end silk 14, and near-end silk 14 described in multi beam is connected with developability control silk 15, and the control silk 15 is with receiving
Tight silk 16 concatenates, and the silk 16 of tightening up is connected with the conveying lever.
The present embodiment take thrombus support 100 other structures can select above-described embodiment any one.
According to embodiments of the present invention takes thrombus support 100, when rack body 10 encases thrombus, due in the middle part of rack body
13 diameters are less than the diameter at rack body both ends, and thrombus is easy to incarceration in rack body 10, and rack body distal end 12c nets
Lattice density is big, and when pulling thrombus, thrombus is not easy to slip, and the support of rack body distal end 12c closing structures is more suitable for pipetting matter
Ground is more hard and larger-size thrombus, and the distal structure, which can be protruded into thrombus, is transformed into the less blood of size
Bolt, it is easier to pipette, the damage to endangium is also greatly lowered.
Described above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, on the premise of principle of the present invention is not departed from, some improvements and modifications can also be made, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (15)
1. one kind takes thrombus support, it is characterised in that including：
Conveying lever；
Rack body, the rack body are connected with the conveying lever, and the rack body is formed as the net being woven into by silk material
Tubulose, the rack body include rack body near-end, rack body distal end and the connection rack body near-end with it is described
In the middle part of the rack body of rack body distal end, wherein, the diameter in the middle part of the rack body is less than the rack body near-end
Diameter and the diameter of the rack body distal end, the rack body near-end are formed as open wedge shape.
2. thrombus support is taken according to claim 1, it is characterised in that the distal end of the conveying lever and the rack body are near
End is connected by way of clamping, be bonded, be soldered or welded.
3. thrombus support is taken according to claim 2, it is characterised in that the distal end of the conveying lever is formed as from the conveying
The taper that the near-end of bar is gradually reduced towards diameter on the distal direction of the conveying lever.
4. thrombus support is taken according to claim 2, it is characterised in that the conveying lever distal end is provided with the de- region of electrolysis, removes
The conveying lever surface is formed with superslide insulating barrier outside the de- region of electrolysis, and the superslide insulating barrier is by polytetrafluoroethylene (PTFE) or right
Dimethylbenzene is formed.
5. thrombus support is taken according to claim 1, it is characterised in that the silk material includes development silk, and the development silk contains
There is developability material, the developability material is selected from：Platinum or its alloy, gold or its alloy, tungsten or its alloy, tantalum or its conjunction
Gold, stainless steel or cochrome.
6. according to claim 5 take thrombus support, it is characterised in that the development silk also includes shell, the shell
It is coated on the developability material, the shell is Nitinol either stainless steel or cochrome.
7. thrombus support is taken according to claim 1, it is characterised in that the silk material also includes false-twist textured yarn, the false-twist textured yarn
For nitinol alloy wire or cochrome silk.
8. take thrombus support according to claim 1, it is characterised in that the size of mesh opening in the middle part of the rack body be more than or
Equal to the size of mesh opening of the rack body near-end and the size of mesh opening of the rack body distal end.
9. thrombus support is taken according to claim 1, it is characterised in that the rack body near-end is collected in developing ring or aobvious
Shadow turn, the developing ring or development turn are connected with the conveying lever.
10. thrombus support is taken according to claim 1, it is characterised in that the silk material is formed in the rack body near-end
Multi beam near-end silk, near-end silk described in multi beam are connected with developability control silk, and the control silk concatenates with tightening up silk, described to tighten up silk
It is connected with the conveying lever.
11. thrombus support is taken according to claim 1, it is characterised in that the rack body distal end is open, and the support
The braiding nodes of body distal end are less than the braiding nodes in the middle part of the rack body.
12. thrombus support is taken according to claim 11, it is characterised in that rack body distal end formed dumb-bell shape or
Distal end forms the umbrella that hemispherical or distal end gradually increase for diameter edge away from rack body distal end.
13. thrombus support is taken according to claim 1, it is characterised in that the rack body distal end closed globulate, institute
State silk material and distal end tow is formed in rack body distal end, the distal end tow is collected in developing ring, development turn or height
In molecule pipe.
14. thrombus support is taken according to claim 13, it is characterised in that axle of the polymer tube along the rack body
To extension, the polymer tube contains developability metal powder.
15. thrombus support is taken according to claim 1, it is characterised in that the surface of the rack body applies formed with medicine
Layer, the medication coat contain the one or more in the medicine of anticoagulant, antiplatelet drug, heparin, anti-angiogenic ISR.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710867387.4A CN107496006A (en) | 2017-09-22 | 2017-09-22 | Take thrombus support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710867387.4A CN107496006A (en) | 2017-09-22 | 2017-09-22 | Take thrombus support |
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ID=60697402
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| CN201710867387.4A Pending CN107496006A (en) | 2017-09-22 | 2017-09-22 | Take thrombus support |
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| CN108578023A (en) * | 2018-04-25 | 2018-09-28 | 广西中医药大学 | A kind of graphene oxide cardiovascular stents and preparation method thereof |
| CN109692027A (en) * | 2018-12-03 | 2019-04-30 | 北京泰杰伟业科技有限公司 | A kind of whole course visible takes thrombus device |
| CN112089477A (en) * | 2020-10-16 | 2020-12-18 | 上海腾复医疗科技有限公司 | Basket type thrombus removing device |
| CN117503441A (en) * | 2024-01-08 | 2024-02-06 | 惠凯医疗科技(苏州)有限公司 | Recoverable medicine support and support system |
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| CN117503441B (en) * | 2024-01-08 | 2024-03-29 | 惠凯医疗科技(苏州)有限公司 | Recoverable medicine support and support system |
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