CN107149511B - Intravascular filter device and intravascular protector - Google Patents
Intravascular filter device and intravascular protector Download PDFInfo
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- CN107149511B CN107149511B CN201710504501.7A CN201710504501A CN107149511B CN 107149511 B CN107149511 B CN 107149511B CN 201710504501 A CN201710504501 A CN 201710504501A CN 107149511 B CN107149511 B CN 107149511B
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- China
- Prior art keywords
- intravascular
- seal wire
- sheath
- avulsion
- filter structure
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Classifications
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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
- 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 present invention provides a kind of intravascular filter device and intravascular protectors; it is related to the technical field of medical instrument, the intravascular filter device, including filter structure and control seal wire; one end of the control seal wire is provided with glissile segment, and the glissile segment both ends are respectively arranged with stop configurations；The filter structure is slidably socketed on the glissile segment, and the stop configurations are for preventing the filter structure from skidding off the glissile segment.When filtering structure release in the blood vessels, because using control seal wire in medical staff's surgical procedure, control seal wire is caused to be moved forward and backward in a certain range, it controls seal wire and opposite sliding occurs for filter structure, it is moved forward and backward without will drive filter structure, to reduce injury of the surgical procedure to patient's blood vessel.
Description
Technical field
The present invention relates to the technical fields of medical instrument, more particularly, to a kind of intravascular filter device and intravascular protection
Device.
Background technique
Currently, treatment it is intravascular it is narrow have a vascular bypass, the methods of endangium is stripped off with intravascular intervention, and intravascular
Intervention is since the small recovery of wound becomes a great development direction fastly, and in intervention operation, such as balloon expandable, rotary-cut take thrombus, bracket
The broken of patch and blood clot can occur in the course of surgery and fall off, generate embolus for implantation etc..These emboluses can be by blood flow band
It walks, enters the distal end of blood vessel along blood flow direction, block distal vessels system, blocking arterial blood enters brain, heart or other are heavy
Organ is wanted, this embolism will lead to cerebral infarction, myocardial infarction, pulmonary embolism, even death.Intravascular distal protector is for receiving
A kind of medical instrument of the solid particles such as patch, the thrombus to fall off in collection surgical procedure.It is intravascular narrow being handled with interventional method
First distal protection device is sent to the distal end of diseased region before narrow and release carries out narrow processing again, distal embolic protection system can hinder
The vasotropic end of the solid particles stream such as patch, thrombus for only falling 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, pushes control seal wire, can
Umbrella body is transported to 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 to fall off in blood, thrombus with filtering blood
Gear prevents it from reaching blood vessel distal end under blood flow impact and causes the generation of Embolic events.
But existing intravascular protector has the following problems in use: whether manipulating and controls in medical staff
It needs to take out conveying sheath and patient after seal wire conveying umbrella body arrival releasing position release processed and uses expansion ball by control seal wire
Capsule can all affect umbrella body to move back and forth to stricture dilation and when stenosis is implanted into bracket, using control seal wire, to will cause
Umbrella body constantly stimulates blood vessel, causes injury of blood vessel.
Summary of the invention
The purpose of the present invention is to provide a kind of intravascular filter device and intravascular protectors, to alleviate medical staff
Manipulation and control seal wire conveying umbrella body needs to take out conveying sheath after reaching releasing position release, and narrow uses various devices handling
When tool, can all umbrella body be affected to move back and forth using control seal wire, so that will cause umbrella body constantly stimulates blood vessel, blood vessel be caused to damage
The technical issues of hurting.
Intravascular filter device provided by the invention, including filter structure and control seal wire, one end of the control seal wire
It is provided with glissile segment, the glissile segment both ends are respectively arranged with stop configurations；The filter structure is slidably socketed in the sliding
Duan Shang, the stop configurations are for preventing the filter structure from skidding off the glissile segment.
Further, the control seal wire further includes the backstop section connecting with glissile segment, and the diameter of the backstop section is greater than
The diameter of the glissile segment；The proximal end of the filter structure is provided with snap ring, and the internal diameter of the snap ring is greater than the glissile segment
Diameter, and it is less than the diameter of the backstop section.
Further, the filter structure includes umbrella cover and skeleton, and filter house is provided on the umbrella cover, and the skeleton is used
In the support umbrella cover；The umbrella cover edge includes cyclic annular sticking part, so that after umbrella cover expansion, it is sliding along the filter structure
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, enters blood vessel for reducing the control seal wire
When stimulation to blood vessel；And the diameter of the protection portion is greater 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 device includes spare seal wire, and the proximal end of the control seal wire, which is provided with, to be used for
Connect the connection structure of the spare seal wire.
Intravascular protector provided by the invention, including above-mentioned intravascular filter device.
Further, the intravascular protector further includes conveying sheath, and the conveying sheath is for conveying the intravascular mistake
Filter device, and the conveying sheath includes communicating passage so that the intravascular filter device from one end of the communicating passage into
After entering, enter in patient body from the other end.
Further, the conveying sheath include can avulsion conduit and avulsion conduit inducting device, the intravascular filter device
By the avulsion conduit inducting device enter described in can avulsion conduit；It is described can avulsion catheter proximal end be provided with avulsion device, institute
State can avulsion conduit include be set to 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 includes across the pulling end of the avulsion device, and the pulling end is used
In the open loop structure is pulled out 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 further include recycling sheath, it is described recycling sheath distal end opening direction with it is described
Recycle the length direction of sheath in obtuse angle.
Intravascular filter device provided by the invention, including filter structure and control seal wire, filter structure can be used for hindering
The solid particles such as patch, thrombus that anti-avulsion is fallen continue with blood flow.One end of the control seal wire is provided with glissile segment, described
The both ends of glissile segment are respectively arranged with stop configurations.Filter structure is slidably socketed on the glissile segment, in the filter structure
During sliding back and forth, when the end of filter structure moves and touches stop configurations, stop configurations can be blocked
Structure is filtered, to prevent filter structure from skidding off glissile segment.In this way, when filtering structure release in the blood vessels, medical staff's operation
In the process because using control seal wire, control seal wire is caused to be moved forward and backward in a certain range, control seal wire and filter structure are sent out
Raw opposite sliding, is moved forward and backward without will drive filter structure, to reduce injury of the surgical procedure to patient's blood vessel.
Intravascular protector provided by the invention, including above-mentioned intravascular filter device.Using intravascular protector, when
When filter structure is discharged in the blood vessels, in medical staff's surgical procedure because using control seal wire, lead to control seal wire certain
It being moved forward and backward in range, opposite sliding occurs for control seal wire and filter structure, it is moved forward and backward without will drive filter structure,
To reduce injury of the surgical procedure to patient's blood vessel.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of intravascular a kind of sectional view of state of filter device provided in an embodiment of the present invention；
Fig. 2 is a kind of sectional view of intravascular filter device another kind state provided in an embodiment of the present invention；
Fig. 3 is the sectional view of the intravascular filter device of another kind provided in an embodiment of the present invention；
Fig. 4 is the sectional view of another intravascular filter device provided in an embodiment of the present invention
Fig. 5 is the schematic diagram of intravascular protector transport 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 recycling sheath of intravascular protector provided in an embodiment of the present invention.
Icon: 100- controls seal wire；110- glissile segment；120- backstop section；130- protection portion；140- stop configurations；200-
Filter structure；210- umbrella cover；220- snap ring；230- casing；240- reinforcing ring；The spare seal wire of 300-；400- conveys sheath；410- is closed
Ring structures；420- open loop structure；The pulling end 430-；440- imports sheath；450- guide pin；500- recycles sheath.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that such as occur term " center ", "upper", "lower", "left", "right",
"vertical", "horizontal", "inner", "outside" etc., the orientation or positional relationship of instruction are that orientation based on the figure or position are closed
System, is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must have
Specific orientation is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, such as there is art
Language " first ", " second ", " third " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
It should be noted that can set during example structure description, as distal end, to be grasped close to one end of inside of human body
One end that author holds then is known as proximal end.
As shown in Figure 1, intravascular filter device provided by the invention, including filter structure 200 and control seal wire 100, mistake
Filter structure 200 can be used for that the solid particles such as the patch, the thrombus that fall off is prevented to continue with blood flow.The control seal wire 100
One end be provided with glissile segment 110, the both ends of the glissile segment 110 are respectively arranged with stop configurations 140.Filter structure 200 is sliding
It is dynamic to be socketed on the glissile segment 110, during the filter structure 200 slides back and forth, when the snap ring of filter structure 200
220 move and when touching stop configurations 140, and stop configurations 140 can block filter structure 200, to prevent filtering from tying
Structure 200 skids off glissile segment 110.In this way, when filter structure 200 discharges in the blood vessels, because making in medical staff's surgical procedure
With control seal wire 100, control seal wire 100 is caused to be moved forward and backward in a certain range, control seal wire 100 and filter structure 200 are sent out
Raw opposite sliding, is moved forward and backward without will drive filter structure 200, to reduce surgical procedure to the wound of 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 greater than described
The diameter of glissile segment 110 will will appear at the crossover position in this way between backstop section 120 and glissile segment 110 rugged
Edge.The proximal end of the filter structure 200 is provided with snap ring 220, and the internal diameter of the snap ring 220 is greater than the glissile segment 110
Diameter, and it is less than the diameter of the backstop section 120, in this way when snap ring 220 moves between backstop section 120 and glissile segment 110
When edge, it will be blocked and cannot arbitrarily move.When intravascular filter device is defeated by human body and extraneous communicating passage
It is fed at hemadostewnosis in distant process, 200 proximal end of filter structure will be withstood positioned at the edge of the backstop section 120 of proximal end
Snap ring 220 at this moment withstand control seal wire 100 and withdraw conveying sheath so that filter structure 200 is pushed forward to releasing position
400, it is withstood since the snap ring 220 of 200 proximal end of filter structure is controlled 100 proximal end backstop section 120 of seal wire processed, it can not be with conveying sheath
400 withdraw together, opposite, and filter structure 200 loses the constraint of conveying sheath 400, are unfolded under the action of own tension.
The filter structure 200 may include umbrella cover 210 and skeleton, be provided with filter house, filter house on the umbrella cover 210
It can be multiple filter hole, blood can be by filter hole, and the solid particles such as some patches, thrombus will be unable to pass through.It is described
Skeleton is used to support the umbrella cover 210, skeleton be it is contractile, when skeleton be in contraction state, will be attached to and control seal wire 100
Side wall, facilitate filter structure 200 to pass through human body and extraneous communicating passage；And when umbrella cover 210 is in extended state, umbrella cover
210 edge will touch the inner wall of blood vessel, thus the particulate matter in filtering blood.210 edge of umbrella cover includes cyclic annular patch
Conjunction portion, after umbrella cover 210 is fully deployed, cyclic annular sticking part is cylindrical, right so as to form face contact with the inner wall of blood vessel
The pressure of vascular wall becomes smaller, so as to so that filter structure 200 is smaller to the stimulation of blood vessel.
Preferably, as shown in Fig. 2, 100 distal end of control seal wire is provided with protection portion 130, for reducing the control
Stimulation when seal wire 100 enters blood vessel to blood vessel.When pushing control seal wire 100, the end of distal end extend into it is intravascular, in order to anti-
Not-go-end portion contacts the inner wall of blood vessel firmly, protection portion 130 can be arranged in end, the material of protection portion 130 can be silica gel, micro- gold
Belong to silk or synthetic material winding braiding, in this way when protection portion 130 touches vascular wall, operator has a sense of touch, and protection portion
130 will not cause biggish excitement to vascular wall.And the diameter of the protection portion 130 is greater than the internal diameter of the snap ring 220, with
After moving the control seal wire 100 towards opposite direction with the filter structure 200, the protection portion 130 and the snap ring
220 offset, so as to increase the moving range of filter structure 200.
As shown in figure 3, the filter structure 200 may include casing 230, umbrella cover 210 and skeleton, casing 230 is socketed in
On the glissile segment 110, the proximal 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 surrounds will play the role of the intravascular granule foreign of filtering.
As shown in figure 4, the filter structure 200 may 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 connect with umbrella cover 210, the reinforcing
240 internal diameter of ring is slightly larger than the internal diameter of stop configurations 140, in order to which protection portion 130 enters filter structure 200.Reinforcing ring 240 simultaneously
It can prevent the thrombus in removal process of filter structure 200 from bursting umbrella cover 210.
Snap ring 220 and skeleton are prepared using material visual under X-ray, in this way during operation, Ke Yitong
It crosses X-ray and shows the position of filter structure 200 and expansion situation in human body, doctor is facilitated to operate.Visual material is generally under X-ray
Heavy metal, or contain 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, which develops, determines whether filter structure 200 is unfolded.
The intravascular filter device includes spare seal wire 300, and the proximal end of the control seal wire 100 is provided with for connecting
The connection structure of the spare seal wire 300.It is linked together by the way that seal wire 100 will be controlled with spare seal wire 300, can be convenient hand
Coaxial technology is used in art.So-called coaxial technology refers to: a seal wire is walked always from conduit head end to conduit tail during surgery
End.This conduit is referred to as coaxial pipe or coaxial system.
Controlling seal wire 100 and spare seal wire 300 can be by the way of being threadedly coupled, such as at the end for controlling seal wire 100
Portion is provided with threaded hole, and cylindrical protrusion is provided in the end of spare seal wire 300, is provided with external screw thread in protrusion, leads to
The cooperation of protrusion with threaded hole is crossed, control seal wire 100 and spare seal wire 300 can be linked together, moreover, spare seal wire
300 diameter is identical as the control diameter of 100 backstop section 120 of seal wire, and after the two connection, crossover position will not generate height not
Flat edge.
In conclusion intravascular filter device provided by the invention, including filter structure 200 and control seal wire 100, filtering
Structure 200 can be used for that the solid particles such as the patch, the thrombus that fall off is prevented to continue with blood flow.The control seal wire 100
One end is provided with glissile segment 110, and the both ends of the glissile segment 110 are respectively arranged with stop configurations 140.Filter structure 200 slides
It is socketed on the glissile segment 110, during the filter structure 200 slides back and forth, when the snap ring of filter structure 200
220 move and when touching stop configurations 140, and stop configurations 140 can block filter structure 200, to prevent filtering from tying
Structure 200 skids off glissile segment 110.In this way, when filter structure 200 discharges in the blood vessels, because making in medical staff's surgical procedure
With control seal wire 100, control seal wire 100 is caused to be moved forward and backward in a certain range, control seal wire 100 and filter structure 200 are sent out
Raw opposite sliding, is moved forward and backward without will drive filter structure 200, to reduce surgical procedure to the wound of patient's blood vessel
Evil.
As shown in figure 5, Fig. 5 is that umbrella is conveying the state in sheath 400, rather than in the blood vessels, blood provided by the invention
Protector in managing, including above-mentioned intravascular filter device.Using intravascular protector, when filter structure 200 is discharged in blood vessel
When interior, in medical staff's surgical procedure because using control seal wire 100, moved before and after leading to control seal wire 100 in a certain range
Dynamic, control seal wire 100 occurs to slide relatively with filter structure 200, is moved forward and backward without will drive filter structure 200, from
And reduce injury of the surgical procedure to patient's blood vessel.
Specifically, the intravascular protector can also include conveying sheath 400 such as Fig. 6-8, conveying sheath 400 includes importing
Sheath 440, the importing sheath 440 are used to imported into intravascular filter device in conveying sheath 400, and importing sheath 440 has opening straight
The guide portion that diameter is gradually reduced facilitates the insertion of intravascular filter device.In the course of surgery, first conveying sheath 400 is distally led to
Lesion is crossed, and reaches lesion distal end suitable position, intravascular filter device is then imported into conveying sheath by importing sheath 440
In 400, and control seal wire 100 is gradually pushed to reach lesion distal end suitable position, conveying sheath 400 is withdrawn, thus by filter structure
200 are placed on illness stenosis distal end.
Because the diameter of glissile segment 110 is relatively small, the space occupied will reduce after filter structure 200 is shunk,
In this way, corresponding conveying sheath 400 can be thinner, so as to pierce by narrower lesion, and to linear stenotic plaque
Swash also smaller.
Intravascular filter device and conveying sheath 400 can use split-type design, can also be mounted in advance in conveying sheath 400,
And the intravascular filter device of existing intravascular protector can only be in advance inside conveying sheath 400, good, general feelings whole in this way
It is easy to use under condition.But existing prepackage mode there is a problem of following: because intravascular filter device is needed in human body
Suitable position release, once opening sealing, it must just use successfully, thus increase patient's pressure at heart, simultaneously because
When existing prepackage mode has larger by stenotic lesion, 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 conveying sheath 400 can be directed through by guiding wire
Biggish stenotic lesion arrives suitable position, then again imports intravascular filter device by conveying sheath 400, one
Determine the waste that equipment is prevented in degree.No matter handling guiding wire is under normal circumstances or passability is better than protector manipulation
Seal wire, and can according to circumstances select variety classes guiding wire.Especially (the application when guiding wire and tubes fit use
The cooperation of middle conveying sheath 400 and guiding wire belongs to the method), and guiding wire properties can be promoted.Therefore it can hold very much
Easily by stenotic lesion, operative failure and waste are avoided.
Further, the conveying sheath 400 include can avulsion conduit and avulsion conduit import sheath 440, the intravascular mistake
Filter device is imported by the avulsion conduit can avulsion conduit described in the entrance of 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 includes across the pulling end 430 for importing avulsion device, the drawing
Moved end 430 is for pulling out the open loop structure 420 from the avulsion device.There are two guide pins for setting in avulsion device
450, from the distal end, proximally direction, the distance between described two guide pins 450 are gradually reduced, and guide pin 450 is used for will
The wall of open loop structure 420 is opened, so as to smoothly enter in open loop structure 420 so as to import sheath 440.
Further, the intravascular protector includes prepackage sheath, and prepackage sheath is a tubular structure, by the blood after cleaning
After the control seal wire 100 of filter device passes through prepackage sheath in managing, pulls back and control seal wire 100, intravascular filter device is received to pre-
It fills in sheath, then in the course of surgery, after conveying the arrival suitable position of sheath 400, the importing of sheath alignment conveying sheath 400 will be pre-installed
Intravascular filter device is pushed into conveying sheath 400 by the opening of sheath 440.
As described in Figure 9, intravascular protector further includes recycling sheath 500, can be suitable by recycling sheath 500 after the completion of operation
Control seal wire 100 protrude into the human body, then filter structure 200 is withdrawn into recycling sheath 500, and then by intravascular filtering
Device takes out.Because the medical instruments such as bracket can be placed in the blood vessels when operation, recycling sheath 500 along control seal wire 100 into
It is fashionable, due to the bracket of blood vessel and implantation may be it is tortuous, recycling sheath 500 opening may therefore hang bracket, so
Can be set recycling sheath 500 distal end opening direction with it is described recycling sheath 500 length direction in obtuse angle.It is effectively prevented
Stent cusps enter in recycling sheath 500, and recycling sheath 500 can effectively pass through bracket, reach 200 present position of filter structure,
Keep operation more smooth.
Steel wire woollen yarn knitting can be set in the closed-loop construct 410 of the conveying sheath 400 and the distal end tube wall of recycling sheath 500
Structure, for increasing the closed-loop construct 410 of conveying sheath 400 and the intensity of recycling 500 head end of sheath, in the case that proof strength is constant
Reduce closed-loop construct 410 and recycle the outer diameter of sheath 500, and can be according to the shape of blood vessel in plasticity.It prevents from conveying
The closed-loop construct 410 and recycling sheath 500 of sheath 400 cause excessive extruding force to blood vessel.
Intravascular protector provided by the invention can be there are two types of application method:
One, using auxiliary seal wire
1, guiding catheter or vagina vasorum reach near lesion, to form human body and extraneous communicating passage.
2, guiding wire is passed through and conveys sheath 400 and as guiding wire passes through at the stenotic lesion of blood vessel and it is suitable to reach
Position withdraws guiding wire, and conveying sheath 400 is retained in original place.
3, intravascular filter device is taken out, intravascular filter device is rinsed with heparin saline.
4, it after the control seal wire 100 of the intravascular filter device after cleaning being passed through prepackage sheath, pulls back and controls seal wire 100,
Intravascular filter device is received into prepackage sheath.
5, sheath head end will be pre-installed and withstands the opening that conveying 400 tail end of sheath imports sheath 440, then push control seal wire 100, it will
In intravascular filter device push-in conveying sheath 400, and until intravascular filter device reaches stenotic lesion distal end suitable position.
6, 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 filter structure 200 loses conveying sheath 400
Constraint, be unfolded under own tension effect, continue to pull out pulling end 430 and until conveying sheath 400 is all withdrawn from vivo.
7, therapeutic device is sent to stenotic lesion position along control seal wire 100 and carries out treatment processing simultaneously until having handled narrow
Lesion.
8, recycling sheath 500 reaches the position of intravascular filter device along control seal wire 100, and snap ring 220 enters recycling sheath 500
After head end, it is fixed live recycling sheath 500 pull back and control seal wire 100 and receive intravascular filter device into recycling sheath 500.
9, it recycles sheath 500 and intravascular filter device is withdrawn from vitro together, operation terminates.
It is very high for lesion blood vessel stenosis, when surgical procedure is larger, guiding wire can be used and drawn
Stenosis was connected.Conduit, vagina vasorum are the channels of therapeutic device in intervention operation, rise and stablize support, the effect of delivery instrument.
Because conveying, sheath 400 is thinner, and filter structure 200 is very soft, thus in the process for convenience intravascular filter device into
Enter to conveying sheath 400, need first by intravascular filter device be placed on prepackage it is intrathecal, be then pushed into again conveying sheath 400.
Two, it only uses control seal wire 100 and discharges intravascular filter device
1, guiding catheter or vagina vasorum reach near lesion, to form human body and extraneous communicating passage.
2, by intravascular filter device by heparin saline rinse after, by the control seal wire 100 of intravascular filter device from
Conveying 400 distal end of sheath penetrates, and fixed conveying sheath 400, which is pulled back, to be controlled seal wire 100 intravascular filter device is recycled to conveying sheath 400
In.
3, intravascular filter device is reached into stenotic lesion vicinity, manipulation control by communicating passage together with conveying sheath 400
Seal wire 100 processed is by stenotic lesion, and since the present invention has free section to design, when manipulation controls seal wire 100, will not link filtering
Device, so that the control manipulation of seal wire 100 is got up, meeting is more flexible.Then sheath 400 will be conveyed and pass through narrow disease along control seal wire 100
Become, and reaches filter device and need releasing position.
4, fixed control seal wire 100 withdraws conveying sheath 400, and the release of intravascular filter device is being needed position.
5, 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.
6, therapeutic device is sent to stenotic lesion position along control seal wire 100 and carries out treatment processing simultaneously until having handled narrow
Lesion.
7, recycling sheath 500 reaches the position of intravascular filter device along control seal wire 100, and snap ring 220 enters recycling sheath 500
After head end, it is fixed live recycling sheath 500 pull back and control seal wire 100 and receive intravascular filter device into recycling sheath 500.
8, it recycles sheath 500 and intravascular filter device is withdrawn from vitro together, operation terminates.
It is not too high vascular lesion for narrowness, when operating difficulty is smaller, guiding wire can not be used, and it is direct
The control seal wire 100 carried using umbrella will convey sheath 400 and transport together with intravascular filter device to releasing position, this
Sample can simplify surgical procedure.
In conclusion intravascular protector provided by the invention, including above-mentioned intravascular filter device.Using intravascular
Protector, when filter structure 200 discharges in the blood vessels, slightly operation controls seal wire 100 to medical staff in the course of surgery
Afterwards, control seal wire 100 occurs to slide relatively with filter structure 200, is moved forward and backward without will drive filter structure 200, from
And reduce injury of the surgical procedure to patient's blood vessel.In addition, filter device 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 device of existing intravascular protector is only
Can be whole good so in advance inside conveying sheath 400, it is easy to use under normal circumstances.But there are following for existing prepackage mode
The problem of: because intravascular filter device needs the suitable position in human body to discharge, once opening sealing, must just use
Success, thus increases patient's pressure at heart, simultaneously because existing prepackage mode pass through as linear narrow or narrow section at
When angle, it is likely that it can not be by causing operative failure, and cause to waste.And in the application, first conveying sheath 400 can be passed through
Guiding wire is directed through biggish stenotic lesion, arrives suitable position, then again passes through intravascular filter device defeated
It send sheath 400 to import, prevents to some extent the waste of equipment.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (8)
1. a kind of intravascular filter device, which is characterized in that including filter structure and control seal wire, one end of the control seal wire
It is provided with glissile segment, the glissile segment both ends are respectively arranged with stop configurations；The filter structure is slidably socketed in the sliding
Duan Shang, the stop configurations are for preventing the filter structure from skidding off the glissile segment；
The control seal wire further includes the backstop section connecting with glissile segment, and the diameter of the backstop section is greater than the straight of the glissile segment
Diameter；The proximal end of the filter structure is provided with snap ring, and the internal diameter of the snap ring is greater than the diameter of the glissile segment, and is less than described
The diameter of backstop section；
The filter structure includes casing, umbrella cover, skeleton and reinforcing ring, and the reinforcing ring is connected to skeleton by micro- wire
The distal end of umbrella；The reinforcing ring is connect with umbrella cover, and described sleeve pipe is socketed on the glissile segment, and the internal diameter of described sleeve pipe is greater than
The diameter of the stop configurations, the reinforcing ring are connect with skeleton, and the reinforcing ring is located at the distal end of the umbrella cover, and it is described plus
Gu the internal diameter of ring be greater than the stop configurations diameter so that in distal end stop configurations can pass through the reinforcing ring and
Sliding in described sleeve pipe；Filter house is provided on the umbrella cover, the skeleton is used to support the umbrella cover；Umbrella cover edge packet
Include cyclic annular sticking part so that the umbrella cover expansion after, along ring-type sticking part described in the filter structure glide direction with it is intravascular
Wall is close to.
2. intravascular filter device according to claim 1, which is characterized in that the distal end of the control seal wire is provided with guarantor
Shield portion, for reducing the stimulation when control seal wire enters blood vessel to blood vessel；And the diameter of the protection portion is greater than the card
The internal diameter of ring, so that after the control seal wire is moved with the filter structure towards opposite direction, the protection portion and the card
Ring offsets.
3. intravascular filter device according to claim 1, which is characterized in that the intravascular filter device includes spare
The proximal end of seal wire, the control seal wire is provided with the connection structure for connecting the spare seal wire.
4. a kind of intravascular protector, which is characterized in that filled including intravascular filtering described in claim 1-3 any one
It sets.
5. intravascular protector according to claim 4, which is characterized in that the intravascular protector further includes conveying
Sheath, the conveying sheath is for conveying the intravascular filter device, and the conveying sheath includes communicating passage, so that the blood vessel
After interior filter device enters from one end of the communicating passage, enter in patient body from the other end.
6. intravascular protector according to claim 5, which is characterized in that the conveying sheath includes that avulsion conduit and can tear
De- conduit inducting device, the intravascular filter device is by can avulsion conduit described in avulsion conduit inducting device entrance；It is described
Can avulsion catheter proximal end be provided with avulsion device, it is described can avulsion conduit include be set to it is described can avulsion distal end of catheter closure
Ring structure is provided with open loop structure between the closed-loop construct and the avulsion device；The open loop structure includes across institute
The pulling end of avulsion device is stated, the pulling end is for pulling out the open loop structure from the avulsion device.
7. intravascular protector according to claim 4, which is characterized in that the intravascular protector includes prepackage sheath,
The prepackage sheath is tubulose, for shrinking the filter structure.
8. intravascular protector according to claim 4, which is characterized in that intravascular protector further includes recycling sheath, institute
State recycling sheath distal end opening direction with it is described recycling sheath length direction in obtuse angle.
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| CN201710504501.7A CN107149511B (en) | 2017-06-27 | 2017-06-27 | Intravascular filter device and intravascular protector |
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| CN201710504501.7A CN107149511B (en) | 2017-06-27 | 2017-06-27 | Intravascular filter device and intravascular protector |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107638602A (en) * | 2017-10-20 | 2018-01-30 | 西安蓝晓科技新材料股份有限公司 | A kind of filter and preparation method and application placed in the blood vessel |
| CN111467102A (en) * | 2020-05-25 | 2020-07-31 | 李立 | Blood flow guider's conveyor |
| CN112842462B (en) * | 2021-02-22 | 2021-10-15 | 上海心玮医疗科技股份有限公司 | Intravascular delivery device and application thereof |
| CN113081382B (en) * | 2021-04-08 | 2023-01-03 | 珠海通桥医疗科技有限公司 | Plug protection device and recovery method |
| CN113081383B (en) * | 2021-04-09 | 2023-01-10 | 苏州中天医疗器械科技有限公司 | Thrombus filtration system |
| CN114305590B (en) * | 2022-03-16 | 2022-06-21 | 北京华脉泰科医疗器械股份有限公司 | Far-end protector |
| CN117771015A (en) * | 2022-09-22 | 2024-03-29 | 神途医疗科技(上海)有限公司 | Embolic protection device and medical instrument |
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| CN202859883U (en) * | 2012-08-08 | 2013-04-10 | 王利锋 | V-P shunting pipe enterocoelia end cathetering puncture needle |
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