CN107149511A - Intravascular filter and intravascular protector - Google Patents
Intravascular filter and intravascular protector Download PDFInfo
- Publication number
- CN107149511A CN107149511A CN201710504501.7A CN201710504501A CN107149511A CN 107149511 A CN107149511 A CN 107149511A CN 201710504501 A CN201710504501 A CN 201710504501A CN 107149511 A CN107149511 A CN 107149511A
- Authority
- CN
- China
- Prior art keywords
- intravascular
- seal wire
- filtration
- sheath
- control seal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- A61F2/01—Filters implantable into blood vessels
-
- 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
- A61F2/01—Filters implantable into blood vessels
- A61F2/011—Instruments for their placement or removal
-
- 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
- A61F2/01—Filters implantable into blood vessels
- A61F2/013—Distal protection devices, i.e. devices placed distally in combination with another endovascular procedure, e.g. angioplasty or stenting
-
- 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
Abstract
The invention provides a kind of intravascular filter and intravascular protector; it is related to the technical field of medicine equipment, the intravascular filter, including filtration and control seal wire; one end of the control seal wire is provided with glissile segment, and the glissile segment two ends are respectively arranged with stop configurations；The filtration is slidably socketed on the glissile segment, and the stop configurations are used to prevent the filtration from skidding off the glissile segment.When filtering structure release in the blood vessels, because using control seal wire in medical personnel's surgical procedure, control seal wire is caused to move forward and backward within the specific limits, seal wire is controlled to occur relative slide with filtration, without driving filtration to be moved forward and backward, so as to reduce injury of the surgical procedure to patient's blood vessel.
Description
Technical field
The present invention relates to the technical field of medicine equipment, more particularly, to a kind of intravascular filter and intravascular protection
Device.
Background technology
At present, treat it is intravascular it is narrow have a vascular bypass, endangium strip off with the method such as intravascular intervention, it is and intravascular
Intervention turns into a great development direction because the small recovery of wound is fast, in intervention operation, such as balloon expandable, rotary-cut, takes thrombus, support
Implantation etc., can occur the broken of patch and blood clot and come off in surgical procedure, produce embolus.These emboluses can be by blood flow band
Walk, along the distal end of blood flow direction intravasation, block distal vessels system, block that arterial blood enters brain, heart or other are heavy
Organ is wanted, this embolism can cause cerebral infarction, miocardial infarction, even pulmonary embolism, death.Intravascular distal protector is for receiving
A kind of medicine equipment of the solid particles such as patch, the thrombus come off in collection surgical procedure.Handling intravascular narrow with interventional method
First distal protection device is delivered to the distal end of diseased region and discharged before narrow and carries out narrow processing again, distal embolic protection system can hinder
The vasotropic end of the solid particle stream such as patch, thrombus for only being come off in surgical procedure, protects distal vessels not to be blocked.
Existing intravascular protector includes umbrella body and conveying sheath, and umbrella body is connected with control seal wire, promotes control seal wire, can
So that umbrella body is transported into lesion narrow remote end by conveying sheath, umbrella body is then released into conveying sheath, umbrella body is unfolded, umbrella body edge
It is close to blood vessel, the umbrella cover of umbrella body can be hindered the solid particles such as the patch come off in blood, thrombus with filtering blood
Gear, prevents its generation that blood vessel distal end is reached under blood flow impact and Embolic events are caused.
But there is problems with use in existing intravascular protector：Whether manipulate and control in medical personnel
Seal wire conveying umbrella body processed is reached to be needed to take out conveying sheath after the release of off-position, and patient uses expansion ball by control seal wire
Capsule can all affect umbrella body to move back and forth, so as to can cause to stricture dilation and when stenosis is implanted into support using control seal wire
Umbrella body constantly stimulates blood vessel, causes injury of blood vessel.
The content of the invention
It is an object of the invention to provide a kind of intravascular filter and intravascular protector, to alleviate medical personnel
Manipulate control seal wire conveying umbrella body reach off-position release after need take out conveying sheath, and handle it is narrow use various devices
During tool, it can all affect umbrella body to move back and forth using control seal wire, so as to umbrella body can be caused constantly to stimulate blood vessel, cause blood vessel to damage
The technical problem of wound.
The intravascular filter that the present invention is provided, including filtration and control seal wire, one end of the control seal wire
Glissile segment is provided with, the glissile segment two ends are respectively arranged with stop configurations；The filtration is slidably socketed to be slided described
Duan Shang, the stop configurations are used to prevent the filtration from skidding off the glissile segment.
Further, the control seal wire also includes the backstop section being connected with glissile segment, and the diameter of the backstop section is more than
The diameter of the glissile segment；The near-end of the filtration is provided with snap ring, and the internal diameter of the snap ring is more than the glissile segment
Diameter, and less than the diameter of backstop section.
Further, the filtration includes being provided with filter house on umbrella cover and skeleton, the umbrella cover, and the skeleton is used
In the support umbrella cover；The umbrella cover edge includes ring-type sticking part, so as to after umbrella cover expansion, be slided along the filtration
Ring-type sticking part described in dynamic direction is close to blood vessel.
Further, the distal end of the control seal wire is provided with protection portion, for reducing the control seal wire intravasation
When stimulation to blood vessel；And the diameter of the protection portion is more than the internal diameter of the snap ring, so that the control seal wire and the mistake
After filter structure is moved towards opposite direction, the protection portion offsets with the snap ring.
Further, the intravascular filter includes standby seal wire, and the near-end of the control seal wire, which is provided with, to be used for
Connect the attachment structure of the standby seal wire.
The intravascular protector that the present invention is provided, including above-mentioned intravascular filter.
Further, the intravascular protector also includes conveying sheath, and the conveying sheath is used to convey the intravascular mistake
Device is filtered, and the conveying sheath includes communicating passage, so that the intravascular filter enters from one end of the communicating passage
After entering, enter in patient body from the other end.
Further, it is described conveying sheath include can avulsion conduit and avulsion conduit inducting device, the intravascular filter
Can avulsion conduit described in by the avulsion conduit inducting device；It is described can avulsion catheter proximal end be provided with avulsion device, institute
State can avulsion conduit include being arranged at it is described can avulsion distal end of catheter closed-loop construct, the closed-loop construct and the avulsion
Open loop structure is provided between device；The open loop structure is included through the pulling end of the avulsion device, and the pulling end is used
Pulled out in by the open loop structure from the avulsion device.
Further, the intravascular protector includes prepackage sheath, and the prepackage sheath is tubulose, for shrinking the filtering
Structure.
Further, intravascular protector also include reclaim sheath, the direction of the opening of the distal end of the recovery sheath with it is described
Reclaim the length direction of sheath in obtuse angle.
The intravascular filter that the present invention is provided, including filtration and control seal wire, filtration can be used for resistance
The solid particles such as patch, thrombus that anti-avulsion falls continue with blood flow.One end of the control seal wire is provided with glissile segment, described
The two ends of glissile segment are respectively arranged with stop configurations.Filtration is slidably socketed on the glissile segment, in the filtration
During sliding back and forth, when the end of filtration is moved and touches stop configurations, stop configurations can be blocked
Structure is filtered, so as to prevent filtration from skidding off glissile segment.So, when filtering structure release in the blood vessels, medical personnel's operation
During because using control seal wire, causing control seal wire to move forward and backward within the specific limits, control seal wire and filtration are sent out
Raw relative slip, without driving filtration to be moved forward and backward, so as to reduce injury of the surgical procedure to patient's blood vessel.
The intravascular protector that the present invention is provided, including above-mentioned intravascular filter.Using intravascular protector, when
When filtration is discharged in the blood vessels, because using control seal wire, causing control seal wire certain in medical personnel's surgical procedure
In the range of move forward and backward, control seal wire and filtration occur it is relative slide, without driving filtration to be moved forward and backward,
So as to reduce injury of the surgical procedure to patient's blood vessel.
Brief description of the drawings
, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical scheme of the prior art
The accompanying drawing used required in embodiment or description of the prior art is briefly described, it should be apparent that, in describing below
Accompanying drawing is some embodiments of the present invention, for those of ordinary skill in the art, before creative work is not paid
Put, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of intravascular a kind of sectional view of state of filter provided in an embodiment of the present invention；
Fig. 2 is a kind of sectional view of intravascular another state of filter provided in an embodiment of the present invention；
Fig. 3 is the sectional view of another intravascular filter provided in an embodiment of the present invention；
Fig. 4 is the sectional view of another intravascular filter provided in an embodiment of the present invention
Fig. 5 is the schematic diagram of intravascular protector feed status provided in an embodiment of the present invention；
Fig. 6 is the sectional view of the conveying sheath of intravascular protector provided in an embodiment of the present invention；
Fig. 7 is the sectional view of the closed-loop construct of the conveying sheath of intravascular protector provided in an embodiment of the present invention；
Fig. 8 is the sectional view of the open loop structure of the conveying sheath of intravascular protector provided in an embodiment of the present invention；
Fig. 9 is the schematic diagram of the recovery sheath of intravascular protector provided in an embodiment of the present invention.
Icon：100- controls seal wire；110- glissile segments；120- backstops section；130- protection portion；140- stop configurations；200-
Filtration；210- umbrella covers；220- snap rings；230- sleeve pipes；240- reinforcing rings；The standby seal wires of 300-；400- conveys sheath；410- is closed
Ring structures；420- open loop structures；430- pulling ends；440- imports sheath；450- prerotation vanes；500- reclaims sheath.
Embodiment
Technical scheme is clearly and completely described below in conjunction with accompanying drawing, it is clear that described implementation
Example is a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill
The every other embodiment that personnel are obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
In the description of the invention, it is necessary to explanation, such as occur term " " center ", " on ", " under ", "left", "right",
" vertical ", " level ", " interior ", " outer " etc., its orientation indicated or position relationship are to be closed based on orientation shown in the drawings or position
System, is for only for ease of the description present invention and simplifies description, rather than indicate or imply that the device or element of meaning must have
Specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.In addition, such as there is art
Language " first ", " second ", " the 3rd " are only used for describing purpose, and it is not intended that indicating or implying relative importance.
Explanation is needed, during example structure description, can be set using one end close to inside of human body as distal end, behaviour
The hand-held one end of author is then referred to as near-end.
As shown in figure 1, the intravascular filter that the present invention is provided, including filtration 200 and control seal wire 100, mistake
Filter structure 200 can be used for preventing the solid particles such as the patch come off, thrombus from continuing with blood flow.The control seal wire 100
One end be provided with glissile segment 110, the two ends of the glissile segment 110 are respectively arranged with stop configurations 140.Filtration 200 is slided
It is dynamic to be socketed on the glissile segment 110, during the filtration 200 slides back and forth, when the snap ring of filtration 200
220 move and when touching stop configurations 140, and stop configurations 140 can block filtration 200, so as to prevent filtering from tying
Structure 200 skids off glissile segment 110.So, when filtration 200 discharges in the blood vessels, because making in medical personnel's surgical procedure
With control seal wire 100, control seal wire 100 is caused to move forward and backward within the specific limits, control seal wire 100 is sent out with filtration 200
Raw relative slip, without driving filtration 200 to be moved forward and backward, so as to reduce wound of the surgical procedure to patient's blood vessel
Evil.
Specifically, the control seal wire 100 can also include backstop section 120, the diameter of the backstop section 120 is more than described
It will occur at the diameter of glissile segment 110, the so crossover position between backstop section 120 and glissile segment 110 rugged
Edge.The near-end of the filtration 200 is provided with snap ring 220, and the internal diameter of the snap ring 220 is more than the glissile segment 110
Diameter, and less than the diameter of backstop section 120, so when snap ring 220 is moved between backstop section 120 and glissile segment 110
During edge, it will be blocked and can not arbitrarily move.When intravascular filter is defeated by human body and extraneous communicating passage
It is fed at hemadostewnosis in distant process, the edge positioned at the backstop section 120 of near-end will withstand the near-end of filtration 200
Snap ring 220, so that filtration 200 is pushed forward into off-position, at this moment withstands control seal wire 100 and withdraw conveying sheath
400, because the controlled near-end backstop section 120 of seal wire 100 processed of the snap ring 220 of the near-end of filtration 200 is withstood, it is impossible to conveying sheath
400 together withdraw, relative, and filtration 200 loses the constraint of conveying sheath 400, deploy in the presence of own tension.
The filtration 200 can include being provided with filter house, filter house on umbrella cover 210 and skeleton, the umbrella cover 210
Can be multiple filter bores, blood can be by filter bores, and the solid particle such as some patches, thrombus will be unable to pass through.It is described
Skeleton is used to support the umbrella cover 210, and skeleton is contractile, when skeleton is in contraction state, will be attached to control seal wire 100
Side wall, facilitate filtration 200 to pass through human body and extraneous communicating passage；And when umbrella cover 210 is in extended configuration, umbrella cover
210 edge will touch the inwall of blood vessel, so that the particulate matter in filtering blood.Pasted including ring-type at the edge of umbrella cover 210
Conjunction portion, after umbrella cover 210 is fully deployed, ring-type sticking part is cylindrical, right so as to be contacted with the inwall of blood vessel formation face
The pressure of vascular wall diminishes, so as to so that stimulation of the filtration 200 to blood vessel is smaller.
Preferably, as shown in Fig. 2 control seal wire 100 distal end is provided with protection portion 130, for reducing the control
To the stimulation of blood vessel during 100 intravasation of seal wire.When promoting control seal wire 100, the end of distal end extend into it is intravascular, in order to anti-
Not-go-end portion contacts the inwall of blood vessel firmly, protection portion 130 can be set in end, the material of protection portion 130 can be silica gel, micro- gold
Belong to silk or synthetic material winding braiding, so when protection portion 130 touches vascular wall, operator has a sense of touch, and protection portion
130 will not cause larger excitement to vascular wall.And the diameter of the protection portion 130 is more than the internal diameter of the snap ring 220, with
Make control seal wire 100 and the filtration 200 towards after opposite direction motion, the protection portion 130 and the snap ring
220 offset, so as to increase the moving range of filtration 200.
As shown in figure 3, the filtration 200 can include sleeve pipe 230, umbrella cover 210 and skeleton, sleeve pipe 230 is socketed in
On the glissile segment 110, the near-end of described sleeve pipe 230 is provided with snap ring 220, outer surface and the umbrella cover 210 of described sleeve pipe 230
The structure that inner surface is surrounded will play a part of the intravascular granule foreign of filtering.
As shown in figure 4, the filtration 200 can include reinforcing ring 240, umbrella cover 210 and skeleton, the reinforcing ring
240 are connected to the distal end of umbrella with skeleton by micro- wire.Meanwhile, the reinforcing ring 240 is connected with umbrella cover 210, described to reinforce
The internal diameter of ring 240 is slightly larger than the internal diameter of stop configurations 140, in order to which protection portion 130 enters filtration 200.While reinforcing ring 240
It can prevent the thrombus in removal process of filtration 200 from bursting umbrella cover 210.
Snap ring 220 and skeleton are prepared from using material visual under X-ray, so during operation, Ke Yitong
Cross X-ray and show the position of filtration 200 and expansion situation in human body, facilitate doctor to operate.Visual material is generally under X-ray
Heavy metal, or containing heavy metal material, such as：Pb, Pt, w, Ta, Au etc..And need certain thickness.So fixed for the development of snap ring 220
Position, skeleton development determines whether filtration 200 deploys.
The intravascular filter includes standby seal wire 300, and the near-end of the control seal wire 100 is provided with for connecting
The attachment structure of the standby seal wire 300.By the way that control seal wire 100 is linked together with standby seal wire 300, hand can be facilitated
Coaxial technology is used in art.So-called coaxial technology refers to：A seal wire is walked to conduit tail always from conduit head end in operation
End.This conduit is referred to as coaxial pipe or coaxial system.
Control seal wire 100 can be by the way of being threadedly coupled with standby seal wire 300, such as the end in control seal wire 100
Portion is provided with screwed hole, and the projection of cylinder is provided with the end of standby seal wire 300, and external screw thread is provided with projection, leads to
The raised cooperation with screwed hole is crossed, control seal wire 100 and standby seal wire 300 can be linked together, moreover, standby seal wire
300 diameter is identical with the diameter of the control backstop of seal wire 100 section 120, and after the two connection, crossover position will not produce height not
Flat edge.
In summary, the intravascular filter that the present invention is provided, including filtration 200 and control seal wire 100, filtering
Structure 200 can be used for preventing the solid particles such as the patch come off, thrombus from continuing with blood flow.The control seal wire 100
One end is provided with glissile segment 110, and the two ends of the glissile segment 110 are respectively arranged with stop configurations 140.Filtration 200 is slided
It is socketed on the glissile segment 110, during the filtration 200 slides back and forth, when the snap ring of filtration 200
220 move and when touching stop configurations 140, and stop configurations 140 can block filtration 200, so as to prevent filtering from tying
Structure 200 skids off glissile segment 110.So, when filtration 200 discharges in the blood vessels, because making in medical personnel's surgical procedure
With control seal wire 100, control seal wire 100 is caused to move forward and backward within the specific limits, control seal wire 100 is sent out with filtration 200
Raw relative slip, without driving filtration 200 to be moved forward and backward, so as to reduce wound of the surgical procedure to patient's blood vessel
Evil.
As shown in figure 5, Fig. 5 is state of the umbrella in conveying sheath 400, rather than in the blood vessels, the blood that the present invention is provided
Protector in pipe, including above-mentioned intravascular filter.Using intravascular protector, when filtration 200 is discharged in blood vessel
When interior, because using control seal wire 100, causing control seal wire 100 is front and rear within the specific limits to move in medical personnel's surgical procedure
Dynamic, with filtration 200 relative slip occurs for control seal wire 100, without driving filtration 200 to be moved forward and backward, from
And reduce injury of the surgical procedure to patient's blood vessel.
Specifically, such as Fig. 6-8, the intravascular protector can also include conveying sheath 400, and conveying sheath 400 includes importing
Sheath 440, the importing sheath 440 is used to intravascular filter importeding into conveying sheath 400, and importing sheath 440 has opening straight
The guide portion that footpath is gradually reduced, facilitates the insertion of intravascular filter.In surgical procedure, first conveying sheath 400 is distally led to
Lesion is crossed, and reaches lesion distal end correct position, intravascular filter is then imported into conveying sheath by importing sheath 440
In 400, and gradually promote control seal wire 100 to reach lesion distal end correct position, withdraw conveying sheath 400, so that by filtration
200 are placed on ill stenosis distal end.
Because the diameter of glissile segment 110 is relatively small, the space that filtration 200 takes after shrinking will reduce,
So, corresponding conveying sheath 400 can be thinner, so as to be pierced by narrower lesion, and to linear stenotic plaque
Swash also smaller.
Intravascular filter and conveying sheath 400 can use split-type design, can also be mounted in advance in conveying sheath 400,
And the intravascular filter of existing intravascular protector can only be in advance inside conveying sheath 400, so overall good, general feelings
It is easy to use under condition.But the problem of existing prepackage mode has following：Because intravascular filter is needed in human body
Correct position release, once opening sealing, success must be just used, patient's pressure at heart is thus increased, simultaneously because
Existing prepackage mode exist by stenotic lesion it is larger when, such as linear narrow, narrow section angulation etc., it is likely that can not
By causing operative failure, and cause to waste.And in the application, first can be directed through conveying sheath 400 by guiding wire
Larger stenotic lesion, to suitable position, then again imports intravascular filter by conveying sheath 400, one
Determine to prevent the waste of equipment in degree.Generally no matter handling guiding wire is or is better than protector manipulation by property
Seal wire, it is possible to according to circumstances select variety classes guiding wire.(the application especially when guiding wire and tubes fit are used
The cooperation of middle conveying sheath 400 and guiding wire belongs to the method), guiding wire properties can be lifted again.Therefore can hold very much
Easily pass through stenotic lesion, it is to avoid operative failure and waste.
Further, the conveying sheath 400 include can avulsion conduit and avulsion conduit import sheath 440, the intravascular mistake
Filtering device can avulsion conduit described in by avulsion conduit importing sheath 440.It is described can avulsion catheter proximal end be provided with and tear
De- device, it is described can avulsion conduit include closed-loop construct 410, the closed-loop construct 410 and the importing avulsion device it
Between be provided with open loop structure 420, the open loop structure 420 is included through the pulling end 430 of the importing avulsion device, described to draw
Moved end 430 is used to pull out the open loop structure 420 from the avulsion device.Two prerotation vanes are provided with avulsion device
450, from the distal end proximally direction, the distance between described two prerotation vanes 450 are gradually reduced, and prerotation vane 450 is used for will
The wall of open loop structure 420 is opened, so as to be smoothly entered so as to import sheath 440 in open loop structure 420.
Further, the intravascular protector includes prepackage sheath, and prepackage sheath is a tubular structure, by the blood after cleaning
The control seal wire 100 of filter is through pre-installing after sheath in pipe, and control seal wire 100 of pulling back receives intravascular filter to pre-
Fill in sheath, then in surgical procedure, after the arrival correct position of sheath 400 is conveyed, prepackage sheath alignment is conveyed to the importing of sheath 400
The opening of sheath 440, by intravascular filter push-in conveying sheath 400.
As described in Figure 9, intravascular protector also includes reclaiming sheath 500, after the completion of operation, can will reclaim sheath 500 suitable
Control seal wire 100 to stretch into the human body, then filtration 200 is withdrawn into recovery sheath 500, and then by intravascular filtering
Device takes out.Because during operation, the medicine equipments such as support can be placed with the blood vessels, reclaim sheath 500 and enter along control seal wire 100
Fashionable, because the support of blood vessel and implantation is probably tortuous, therefore reclaim the opening of sheath 500 may hang support, so
Can set reclaim sheath 500 distal end opening direction with it is described recovery sheath 500 length direction in obtuse angle.Effectively prevent
Stent cusps are entered in recovery sheath 500, and the present position of filtration 200 can be reached effectively by support by reclaiming sheath 500,
Make operation more smooth.
Steel wire woollen yarn knitting can be provided with the closed-loop construct 410 of the conveying sheath 400 and the distal end tube wall of recovery sheath 500
Structure, for increasing the closed-loop construct 410 of conveying sheath 400 and reclaiming the intensity of the head end of sheath 500, it is ensured that in the case that intensity is constant
Reduce closed-loop construct 410 and reclaim the outside dimension of sheath 500, and can be according to the shape of blood vessel in plasticity.Prevent conveying
The closed-loop construct 410 and recovery sheath 500 of sheath 400 cause excessive extruding force to blood vessel.
The intravascular protector that the present invention is provided can have two kinds of application methods：
First, using auxiliary seal wire
1st, guiding catheter or vagina vasorum are reached near lesion, so as to form human body and extraneous communicating passage.
2nd, guiding wire is passed through at the stenotic lesion for conveying sheath 400 and passing through blood vessel with guiding wire and reaches suitable
Position, withdraws guiding wire, and conveying sheath 400 is retained in into original place.
3rd, intravascular filter is taken out, intravascular filter is rinsed with heparin saline.
4th, by the control seal wire 100 of the intravascular filter after cleaning through pre-installing after sheath, control seal wire 100 of pulling back,
Intravascular filter is received into prepackage sheath.
5th, sheath head end will be pre-installed and withstands the opening that conveying sheath 400 tail end imports sheath 440, then push control seal wire 100, will
In intravascular filter push-in conveying sheath 400, and until intravascular filter reaches stenotic lesion distal end correct position.
6th, fixed avulsion device and control seal wire 100, pull out pulling end 430, convey the open loop structure 420 of sheath 400
Avulsion device is pulled out after being unfolded, conveying sheath 400 can be withdrawn under tension, and filtration 200 loses conveying sheath 400
Constraint, deploy under own tension effect, continue to pull out pulling end 430 and until conveying sheath 400 is all withdrawn from vivo.
7th, therapeutic device is sent to the progress treatment processing of stenotic lesion position along control seal wire 100 and until has handled narrow
Lesion.
8th, the position that sheath 500 reaches intravascular filter along control seal wire 100 is reclaimed, snap ring 220, which enters, reclaims sheath 500
After head end, fixed firmly recovery sheath 500, which is pulled back, controls seal wire 100 to receive intravascular filter into recovery sheath 500.
9th, reclaim sheath 500 and intravascular filter is together withdrawn from vitro, operation terminates.
It is very high for lesion blood vessel stenosis, when operation technique is larger, guiding wire can be used to be drawn
Turned on stenosis.Conduit, vagina vasorum are the passages of therapeutic device in intervention operation, play stable support, the effect of delivery instrument.
Because conveying, sheath 400 is thinner, and filtration 200 is very soft, thus during for convenience intravascular filter enter
Enter to conveying sheath 400, it is necessary to first by intravascular filter be placed on prepackage it is intrathecal, then again be pushed into conveying sheath 400.
2nd, only intravascular filter is discharged using control seal wire 100
1st, guiding catheter or vagina vasorum are reached near lesion, so as to form human body and extraneous communicating passage.
2nd, after intravascular filter is rinsed by heparin saline, by the control seal wire 100 of intravascular filter from
Conveying sheath 400 distal end is penetrated, and fixed conveying sheath 400, which is pulled back, controls seal wire 100 that intravascular filter is recycled into conveying sheath 400
In.
3rd, intravascular filter is reached into stenotic lesion vicinity, manipulation control together with conveying sheath 400 by communicating passage
Seal wire 100 processed is by stenotic lesion, because the present invention has free section to design, and in manipulation control seal wire 100, will not link filtering
Device so that the control manipulation of seal wire 100 is got up can be more flexible.Then conveying sheath 400 is passed through into narrow disease along control seal wire 100
Becoming, and reach filter needs off-position.
4th, fixed control seal wire 100 withdraws conveying sheath 400, and the release of intravascular filter is being needed into position.
5th, fixed avulsion device and control seal wire 100, pull out pulling end 430, convey the open loop structure 420 of sheath 400
Avulsion device is pulled out after being unfolded, conveying sheath 400 can be withdrawn under tension, and until all be withdrawn from vivo.
6th, therapeutic device is sent to the progress treatment processing of stenotic lesion position along control seal wire 100 and until has handled narrow
Lesion.
7th, the position that sheath 500 reaches intravascular filter along control seal wire 100 is reclaimed, snap ring 220, which enters, reclaims sheath 500
After head end, fixed firmly recovery sheath 500, which is pulled back, controls seal wire 100 to receive intravascular filter into recovery sheath 500.
8th, reclaim sheath 500 and intravascular filter is together withdrawn from vitro, operation terminates.
It is not too high vascular lesion for narrowness, can be and direct without using guiding wire when operating difficulty is smaller
The control seal wire 100 carried using umbrella is transported sheath 400 is conveyed to off-position together with intravascular filter, this
Sample can simplify surgical procedure.
In summary, the intravascular protector that the present invention is provided, including above-mentioned intravascular filter.Using intravascular
Protector, when filtration 200 discharges in the blood vessels, medical personnel's slightly operational control seal wire 100 in surgical procedure
Afterwards, with filtration 200 relative slip occurs for control seal wire 100, without driving filtration 200 to be moved forward and backward, from
And reduce injury of the surgical procedure to patient's blood vessel.In addition, filter and conveying sheath 400 can be used in the application medium vessels
Split-type design simultaneously can also be in advance in conveying sheath 400.And the intravascular filter of existing intravascular protector is only
Can be so overall good in advance inside conveying sheath 400, it is generally easy to use.But existing prepackage mode exists following
The problem of：Because intravascular filter is to need the correct position in human body to discharge, once opening sealing, it must just use
Success, thus increase patient's pressure at heart, simultaneously because existing prepackage mode by such as linearly narrow or narrow section into
During angle, it is likely that can not be by causing operative failure, and cause to waste.And in the application, first can pass through conveying sheath 400
Guiding wire is directed through larger stenotic lesion, to suitable position, then again passes through intravascular filter defeated
Send sheath 400 to import, prevent to some extent the waste of equipment.
Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations；To the greatest extent
The present invention is described in detail with reference to foregoing embodiments for pipe, it will be understood by those within the art that：Its according to
The technical scheme described in foregoing embodiments can so be modified, or which part or all technical characteristic are entered
Row equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology
The scope of scheme.
Claims (10)
1. a kind of intravascular filter, it is characterised in that including filtration and control seal wire, one end of the control seal wire
Glissile segment is provided with, the glissile segment two ends are respectively arranged with stop configurations；The filtration is slidably socketed to be slided described
Duan Shang, the stop configurations are used to prevent the filtration from skidding off the glissile segment.
2. intravascular filter according to claim 1, it is characterised in that the control seal wire also includes and glissile segment
The backstop section of connection, the diameter of the backstop section is more than the diameter of the glissile segment；The near-end of the filtration is provided with card
Ring, the internal diameter of the snap ring is more than the diameter of the glissile segment, and less than the diameter of backstop section.
3. intravascular filter according to claim 2, it is characterised in that the filtration includes umbrella cover and bone
Filter house is provided with frame, the umbrella cover, the skeleton is used to support the umbrella cover；Fitted including ring-type at the umbrella cover edge
Portion, so as to after umbrella cover expansion, be close to along ring-type sticking part described in the filtration glide direction with blood vessel.
4. intravascular filter according to claim 3, it is characterised in that the distal end of the control seal wire is provided with guarantor
Shield portion, for reducing the stimulation during control seal wire intravasation to blood vessel；And the diameter of the protection portion is more than the card
The internal diameter of ring, so that after the control seal wire is moved with the filtration towards opposite direction, the protection portion and the card
Ring offsets.
5. intravascular filter according to claim 1, it is characterised in that the intravascular filter includes standby
Seal wire, the near-end of the control seal wire is provided with the attachment structure for connecting the standby seal wire.
6. a kind of intravascular protector, it is characterised in that including the intravascular filtering dress described in claim 1-5 any one
Put.
7. intravascular protector according to claim 6, it is characterised in that the intravascular protector also includes conveying
Sheath, the conveying sheath is used to convey the intravascular filter, and the conveying sheath includes communicating passage, so that the blood vessel
After interior filter enters from one end of the communicating passage, enter in patient body from the other end.
8. intravascular protector according to claim 7, it is characterised in that the conveying sheath includes avulsion conduit and tearing
De- conduit inducting device, the intravascular filter can avulsion conduit described in by the avulsion conduit inducting device；It is described
Can avulsion catheter proximal end be provided with avulsion device, it is described can avulsion conduit include being arranged at it is described can avulsion distal end of catheter closure
Ring structure, open loop structure is provided between the closed-loop construct and the avulsion device；The open loop structure is included through institute
The pulling end of avulsion device is stated, the pulling end is used to pull out the open loop structure from the avulsion device.
9. intravascular protector according to claim 6, it is characterised in that the intravascular protector includes prepackage sheath,
The prepackage sheath is tubulose, for shrinking the filtration.
10. intravascular protector according to claim 6, it is characterised in that intravascular protector also includes reclaiming sheath, institute
State reclaim sheath distal end opening direction with it is described recovery sheath length direction in obtuse angle.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710504501.7A CN107149511B (en) | 2017-06-27 | 2017-06-27 | Intravascular filter device and intravascular protector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710504501.7A CN107149511B (en) | 2017-06-27 | 2017-06-27 | Intravascular filter device and intravascular protector |
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| CN107149511B CN107149511B (en) | 2019-11-19 |
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| CN201710504501.7A Active CN107149511B (en) | 2017-06-27 | 2017-06-27 | Intravascular filter device and intravascular protector |
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| CN111467102A (en) * | 2020-05-25 | 2020-07-31 | 李立 | Blood flow guider's conveyor |
| CN112842462A (en) * | 2021-02-22 | 2021-05-28 | 上海心玮医疗科技股份有限公司 | Intravascular delivery device and application thereof |
| CN113081383A (en) * | 2021-04-09 | 2021-07-09 | 苏州中天医疗器械科技有限公司 | Thrombus filter |
| CN113081382A (en) * | 2021-04-08 | 2021-07-09 | 珠海通桥医疗科技有限公司 | Plug protection device and recovery method |
| CN114305590A (en) * | 2022-03-16 | 2022-04-12 | 北京华脉泰科医疗器械股份有限公司 | Far-end protector |
| WO2024060892A1 (en) * | 2022-09-22 | 2024-03-28 | 神途医疗科技(上海)有限公司 | Embolism protection apparatus and medical device |
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| WO2024060892A1 (en) * | 2022-09-22 | 2024-03-28 | 神途医疗科技(上海)有限公司 | Embolism protection apparatus and medical device |
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|---|---|
| CN107149511B (en) | 2019-11-19 |
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