CN109331321A - A kind of seal wire break catching apparatus - Google Patents
A kind of seal wire break catching apparatus Download PDFInfo
- Publication number
- CN109331321A CN109331321A CN201811132125.4A CN201811132125A CN109331321A CN 109331321 A CN109331321 A CN 109331321A CN 201811132125 A CN201811132125 A CN 201811132125A CN 109331321 A CN109331321 A CN 109331321A
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- Prior art keywords
- netted
- seal wire
- mandrel
- arresting agency
- catching apparatus
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/09—Guide wires
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M2025/0177—Introducing, guiding, advancing, emplacing or holding catheters having external means for receiving guide wires, wires or stiffening members, e.g. loops, clamps or lateral tubes
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
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- Pulmonology (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
This application discloses a kind of seal wire break catching apparatus, it include: mandrel (1), the netted arresting agency (2) being fixedly connected with the mandrel (1), the netted arresting agency (2) can be unfolded to reticulate with self-expanding, or be drawn into strip.Seal wire break catching apparatus provided by the present application can assist reverse seal wire to enter positive guiding catheter, shorten operating time, reduce the radiation exposure time and comparison agent dose；Meanwhile, it is capable to reduce the risk of instrument damage, the use of other instruments is reduced, to improve success rate of operation.
Description
Technical field
This application involves the field of medical instrument technology, more particularly to a kind of seal wire break catching apparatus.
Background technique
Chronic total occlusion of coronary artery (CTO), refers to that coronary lesion site entirely shuts, through coronary angiography
It is 0 grade that confirmed myocardial, which blocks thromboembolism treatment (TIMI) flow grading, while its off-period is greater than or equal to 3 months lesions.
Because its diseased region is special, lesion calcification is serious, and the success rate of interventional therapy is lower, and postoperative complication is high, becomes coronary artery
Interventional therapy field is difficult to the fort captured.
The application of the reverse seal wire technology carried out in recent years by collatoral vessel undoubtedly has raising CTO intervention success rate
Very big help.Reverse seal wire is by the way that behind collateral channel, the chance of successful surgery rises to 90% or more, and the application of reversal technique can
So that CTO is intervened total success rate and improves 10% or more.
When reverse seal wire technology treats CTO, after reverse seal wire passes through vascular occlusion section, need to establish direct orbit.It builds
The Part Methods of vertical direct orbit have: 1. reverse seal wire is released after being directly entered positive guiding catheter；2. double catheter technique docks skill
Art；3. positive seal wire docks reverse microtubular, this three kinds of methods, which are required to first to manipulate reverse seal wire, to be entered in positive guiding catheter,
However since vascular occlusion position is difficult to positive guiding catheter coaxial, reverse seal wire, which enters positive guiding catheter, to be extremely stranded
It is difficult.
Therefore, how to realize that reverse seal wire is docked with positive the smooth of guiding catheter, be that those skilled in the art urgently solve
Certainly the technical issues of.
Summary of the invention
In order to solve the above technical problems, it is an object of the present invention to provide a kind of seal wire break catching apparatus；It is provided by the present application to lead
Silk break catching apparatus, can assist reverse seal wire to enter positive guiding catheter, shorten operating time, reduce the radiation exposure time and
Compare agent dose；Meanwhile, it is capable to reduce the risk of instrument damage, the use of other instruments is reduced, to improve success rate of operation.
Technical solution provided by the invention is as follows:
A kind of seal wire break catching apparatus, comprising: mandrel, the netted arresting agency being fixedly connected with the mandrel are described netted
Arresting agency can be unfolded to reticulate with self-expanding, or be drawn into strip.
Preferably, the netted arresting agency can be unfolded to reticulate with self-expanding, or be drawn into strip specifically: also set
There is casing, described sleeve pipe is set on the outside of the mandrel and the netted arresting agency, and the internal diameter of described sleeve pipe is greater than or equal to
It is drawn into the diameter of the netted arresting agency of strip, and is less than the diameter that the netted netted arresting agency is unfolded.
Preferably, one end of the separate mandrel distal end of the netted arresting agency is equipped with proximal connection point, and the proximal end connects
Contact is fixedly connected with the mandrel.
Preferably, the netted arresting agency is equipped with distal attachment points far from one end of the proximal connection point, described remote
End tie point can be moved axially along the mandrel.
Preferably, the netted arresting agency by the metal material with shape memory effect or has elastomeric high score
Sub- material is made, or by the metal material with shape memory effect and there is elastomeric high molecular material to combine and be made.
Preferably, the netted arresting agency is made or woven is made through laser cutting.
Preferably, the mandrel is made of metal or high molecular material, or is combined and be made by metal and high molecular material.
Preferably, the distal end of the mandrel is equipped with headgear, and the hardness of the headgear is lower than the hardness of the mandrel.
Preferably, the mandrel, netted arresting agency, any one or more in headgear are equipped with developing mark.
Preferably, the developing mark is made of any one or more in gold, platinum, tantalum, tungsten, platinum tungsten, platinoiridita, or by
Doped with BaSO4Or Bi2O3High molecular material be made.
Reverse seal wire technology, which refers to, passes through opposite side or ipsilateral Doppler flow mapping in heart coronary artery blood vessel using guiding wire
It is formed by traffic blood vessel, into occluded blood vessel lesion region distal end, then by various different modes to chronic total occlusion disease
Become a kind of technology that region is handled.In the application, inversely refer to opposite with blood flow direction.Reverse seal wire passes through Occlusion
Behind region, needs and positive guiding catheter docks, existing method is to entangle reverse seal wire by snare, so using snare
After tighten snare ring, promptly seal wire head end and seal wire head end is bent, snare of then dropping back pulls in reverse seal wire just
Into guiding catheter.But use snare, have the following problems: first, reverse seal wire be not easy in positive guiding catheter by
Release increases operating time；Second, the bending of seal wire head end is easy to cause seal wire to be broken.And if using double catheter technique docking or
Positive seal wire docks the mode that reverse microtubular establishes forward channel, is not easy to recall from microtubular there is also seal wire, is easy damage
The problem of bad microtubular.
In view of the above problems in the prior art, the application provides a kind of seal wire break catching apparatus, comprising: mandrel, with the core
The netted arresting agency that axis is fixedly connected, the netted arresting agency can be unfolded to reticulate with self-expanding, or be drawn into strip.
When netted arresting agency is unfolded, grid-gap is more, and there are larger spaces for inside, protrude into netted arresting agency convenient for seal wire
Portion；When netted arresting agency is drawn into strip, inner space becomes smaller, and seal wire is constrained in inside reticular structure and clamped,
Then the mandrel being fixedly connected with netted arresting agency is pulled, keeps netted arresting agency mobile, so as to drive seal wire mobile,
Into in guiding catheter, smooth realization seal wire is docked with guiding catheter.Seal wire break catching apparatus provided by the present application, to seal wire
Arrest, fix and moving process in seal wire head end will not be made to bend, and can be when needing to discharge, so that netted arresting agency
It is unfolded again, can smoothly discharges seal wire.Seal wire break catching apparatus provided by the present application can assist reverse seal wire to enter forward direction and refer to
Guiding tube shortens operating time, reduces the radiation exposure time and comparison agent dose；Meanwhile, it is capable to reduce the wind of instrument damage
Danger, reduces the use of other instruments, to improve success rate of operation.
Detailed description of the invention
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The some embodiments recorded in application, for those of ordinary skill in the art, without creative efforts,
It is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of structural schematic diagram of seal wire break catching apparatus in the embodiment of the present invention；
Fig. 2 is another structural schematic diagram of seal wire break catching apparatus in the embodiment of the present invention；
Fig. 3 is another structural schematic diagram of seal wire break catching apparatus in the embodiment of the present invention；
Fig. 4 is another structural schematic diagram of seal wire break catching apparatus in the embodiment of the present invention；
Fig. 5 is another structural schematic diagram of seal wire break catching apparatus in the embodiment of the present invention；
Fig. 6 is the using process diagram of seal wire break catching apparatus in the embodiment of the present invention；Wherein:
(I) it is sent into seal wire break catching apparatus along guiding catheter c, until head end of the netted arresting agency distal end close to seal wire b；
(II) recession casing 3, is unfolded netted arresting agency 2 in the blood vessels, until adapting to blood vessel diameter；
(III) seal wire b is pushed, seal wire b head end is made to enter netted 2 inner space of arresting agency；
(IV) it keeps seal wire break catching apparatus and the position seal wire b constant, pushes casing 3 forward, receive netted arresting agency 2
Contracting clamps seal wire b head end and recycles in sleeve pipe 3；
(V) it keeps seal wire break catching apparatus and 3 relative position of casing constant, drops back together, seal wire b is pulled in into guiding catheter c
It is interior.
Appended drawing reference: 1- mandrel；The netted arresting agency of 2-；21- proximal connection point；22- distal attachment points；3- casing；4-
Headgear；5- developing mark；A- occlusion site；B- seal wire；C- guiding catheter.
Specific embodiment
In order to make those skilled in the art better understand the technical solutions in the application, below in conjunction with the application reality
The attached drawing in example is applied, the technical scheme in the embodiment of the application is clearly and completely described, it is clear that described implementation
Example is merely a part but not all of the embodiments of the present application.Based on the embodiment in the application, this field is common
The application protection all should belong in technical staff's every other embodiment obtained without making creative work
Range.
Please be as shown in Figures 1 to 6, the embodiment of the present invention provides a kind of seal wire break catching apparatus, comprising: mandrel 1, with the core
The netted arresting agency 2 that axis 1 is fixedly connected, the netted arresting agency 2 can be unfolded to reticulate with self-expanding, or stretch strip
Shape.
Reverse seal wire technology, which refers to, passes through opposite side or ipsilateral Doppler flow mapping in heart coronary artery blood vessel using guiding wire
It is formed by traffic blood vessel, into occluded blood vessel lesion region distal end, then by various different modes to chronic total occlusion disease
Become a kind of technology that region is handled.In the application, inversely refer to opposite with blood flow direction.Reverse seal wire passes through Occlusion
Behind region, needs and positive guiding catheter docks, existing method is to entangle reverse seal wire by snare, so using snare
After tighten snare ring, promptly seal wire head end and seal wire head end is bent, snare of then dropping back pulls in reverse seal wire just
Into guiding catheter.But use snare, have the following problems: first, reverse seal wire be not easy in positive guiding catheter by
Release increases operating time；Second, the bending of seal wire head end is easy to cause seal wire to be broken.And if using double catheter technique docking or
Positive seal wire docks the mode that reverse microtubular establishes forward channel, is not easy to recall from microtubular there is also seal wire, is easy damage
The problem of bad microtubular.
In view of the above problems in the prior art, the application provides a kind of seal wire break catching apparatus, comprising: mandrel 1, with the core
The netted arresting agency 2 that axis 1 is fixedly connected, the netted arresting agency 2 can be unfolded to reticulate with self-expanding, or stretch strip
Shape.When netted arresting agency 2 is unfolded, grid-gap is more, and there are larger spaces for inside, protrude into netted arresting agency convenient for seal wire
Inside 2；When netted arresting agency 2 is drawn into strip, inner space becomes smaller, and seal wire is constrained in inside reticular structure and pressed from both sides
Tightly, the mandrel 1 being fixedly connected with netted arresting agency 2 is then pulled, keeps netted arresting agency 2 mobile, is led so as to drive
Silk is mobile, and into guiding catheter, smooth realization seal wire is docked with guiding catheter.Seal wire break catching apparatus provided by the present application,
To the arresting of seal wire, fix and moving process in seal wire head end will not be made to bend, and can be when needing to discharge, so that netted
Arresting agency 2 is unfolded again, can smoothly discharge seal wire.Seal wire break catching apparatus provided by the present application, can assist reverse seal wire
Into positive guiding catheter, shortens operating time, reduces the radiation exposure time and comparison agent dose；Meanwhile, it is capable to reduce device
The risk of tool damage, reduces the use of other instruments, to improve success rate of operation.
Preferably, the netted arresting agency 2 can be unfolded to reticulate with self-expanding, or be drawn into strip specifically: also
Equipped with casing 3, described sleeve pipe 3 is set in 2 outside of the mandrel 1 and the netted arresting agency, and the internal diameter of described sleeve pipe 3 is greater than
Or the diameter equal to the netted arresting agency 2 for being drawn into strip, and be less than and the netted netted arresting agency 2 is unfolded
Diameter.
As a kind of embodiment of the application, the netted arresting agency 2 can be unfolded to reticulate with self-expanding, or stretch
Growth strip specifically: be additionally provided with casing 3, described sleeve pipe 3 is set in 2 outside of the mandrel 1 and the netted arresting agency, institute
The internal diameter for stating casing 3 is greater than or equal to the diameter for being drawn into the netted arresting agency 2 of strip.By the way that casing 3 is arranged, and
The internal diameter that casing 3 is arranged is greater than or equal to the diameter for being drawn into the netted arresting agency 2 of strip, so that casing 3 can be with
Realize by netted arresting agency 2 by be unfolded it is netted be squeezed into strip, realize the transformation of netted 2 two states of arresting agency.
Mobile mandrel 1, so that the direction for driving netted arresting agency 2 to close casing 3 is mobile, at this point, netted arresting agency 2 is due to set
The extruding of pipe 3, diameter reduce, are drawn into strip, progress into casing 3, in the process, are located at netted arresting agency 2
The netted arresting agency 2 that internal seal wire head end is also drawn into strip clamps, and is brought into casing 3 together.Again by casing 3,
Mandrel 1 moves together, and seal wire head end can be brought into guiding catheter, realizes that seal wire is docked with the smooth of guiding catheter.It is needing
When discharging seal wire, fixed central spindle 1, casing 3 of dropping back is unfolded so that netted arresting agency 2 be made to be released from casing 3
In netted, mandrel 1 is moved at this time, drives netted arresting agency 2 mobile, i.e., the head end of releasable seal wire.
Be arranged casing 3, not only may be implemented netted arresting agency 2 self-expanding expansion reticulate and be drawn into strip it
Between switch, netted can also be grabbed during conveying netted arresting agency 2 and reaching with seal wire head end docking area domain so that entire
It catches mechanism 2 and mandrel 1 is contained in casing 3 and is conveyed, prevent netted arresting agency 2 from damaging the interior of blood vessel and guiding catheter
Wall.
Preferably, one end of the separate mandrel distal end of the netted arresting agency 2 is equipped with proximal connection point 21, the proximal end
Tie point 21 is fixedly connected with the mandrel 1.
Preferably, one end of the separate mandrel distal end of the netted arresting agency 2 is equipped with proximal connection point 21, it is described close
End tie point 21 is fixedly connected with the mandrel 1.In the application, distally refer to one end far from operator, proximal end refers to
Close to one end of operator.Mandrel 1 is then moved, during driving netted 2 sleeve pipe 3 of arresting agency, proximal end connection
Point 21 is introduced into casing 3, and then netted arresting agency 2 progresses into casing 3, is squeezed into strip.Therefore, setting is close
Hold tie point 21, and proximal connection point 21 be fixedly connected with mandrel 1, netted arresting agency 2 easy to remove, be also convenient for mandrel 1,
The cooperating of netted arresting agency 2 and casing 3.
Preferably, the netted arresting agency 2 is equipped with distal attachment points 22, institute far from one end of the proximal connection point 21
Stating distal attachment points 22 can move axially along the mandrel 1.
It is equipped with far preferably, the netted arresting agency 2 can also be arranged far from one end of the proximal connection point 21
Tie point 22 is held, the distal attachment points 22 can be moved axially along the mandrel 1.
Netted arresting agency 2 can be type closed at one end open at one end, as shown in Fig. 2 or Fig. 4 or Fig. 5；It is also possible to two
End seal closed form, as shown in Fig. 1 or Fig. 3.Netted arresting agency 2 can be at cylindrical shape, strainer shape, shelf-like or any other shape
Shape.
It is type closed at one end open at one end when netted arresting agency 2 is arranged, closed one end is arranged proximal connection point 21, opens
Distal attachment points 22, which can be set, in one end of mouth can also be not provided with distal attachment points 22.It is both ends when netted arresting agency 2 is arranged
When enclosed type, proximal connection point 21, distal attachment points 22 is respectively set in closed both ends.Proximal connection point 21 and mandrel 1 are fixed
Connection, distal attachment points 22 can be moved axially along the mandrel 1, then when netted 2 sleeve pipe 3 of arresting agency, sleeve 3 is squeezed
When the netted arresting agency 2 of pressure is drawn into strip, distal attachment points 22 are mobile to the direction far from proximal connection point 21.And work as
Netted arresting agency 2 is discharged from casing 3, and when self-expanding expansion reticulates, distal attachment points 22 are to close to proximal connection point 21
Direction it is mobile.Distal attachment points 22 are set, can make netted arresting agency 2 in morphing process, are still kept and core
The concentricity of axis 1, convenient for control.
When proximal connection point 21, distal attachment points 22 is arranged simultaneously, mandrel 1 passes through entire netted arresting agency 2.When only
When proximal connection point 21 is arranged, mandrel 1 can pass through entire netted arresting agency 2, can also be not passed through netted arresting agency 2,
Or mandrel 1 protrudes into netted 2 interior section space of arresting agency.When setting mandrel 1 is not passed through netted arresting agency 2, then by net
The proximal connection point 21 of shape arresting agency 2 is fixedly connected with the top of mandrel 1.
Preferably, the netted arresting agency 2 by the metal material with shape memory effect or has elastomeric height
Molecular material is made, or by the metal material with shape memory effect and there is elastomeric high molecular material to combine and be made.
It realizes that netted arresting agency 2 is reticulated in self-expanding expansion, or is drawn between two kinds of forms of strip and becomes
Change, needing to be arranged netted arresting agency 2 is made of the material for capableing of self-expanding.Specifically, netted arresting agency 2 is by with shape
There is the metal material of shape memory effect elastomeric high molecular material to be made, or by the metal material with shape memory effect
Expect and there is the combination of elastomeric high molecular material to be made.For example, preparing netted arresting agency 2 using Nitinol.Using certainly
The auxiliary without devices such as air bags can be smoothly unfolded in the material of expansion, netted arresting agency 2 in vivo, simplify device knot
Structure, while streamline operation shorten operating time.Seal wire break catching apparatus provided by the present application, the radial direction of netted arresting agency 2
Power size, diameter, dilute close degree of grid, pattern structure can be adjusted according to the clinical demand of instrument.By adjusting
The type or proportion of material, size or technique etc., to cooperate clinical demand, provide suitable seal wire break catching apparatus.For example, according to
The diameter of seal wire head end docking area domain blood vessel is arranged diameter after netted arresting agency 2 is unfolded.
Preferably, the netted arresting agency 2 is made or woven is made through laser cutting.
Preferably, the mandrel 1 is made of metal or high molecular material, or is combined and be made by metal and high molecular material.
Mandrel 1 can be standby by made of metal, such as Nitinol, stainless steel.Mandrel 1 can also be prepared by high molecular material,
Such as polytetrafluoroethylene (PTFE), polyimides.Mandrel 1 can also be combined by metal and high molecular material and is made, and such as have polytetrafluoroethyl-ne
The Nitinol of ene coatings.
Preferably, netted arresting agency 2 is made or woven is made through laser cutting.
Preferably, the distal end of the mandrel 1 is equipped with headgear 4, and the hardness of the headgear 4 is lower than the hardness of the mandrel 1.
Preferably, the distal end of the mandrel 1 is equipped with headgear 4, the hardness of the headgear 4 is lower than the hardness of the mandrel 1.
The headgear 4 that hardness is lower than mandrel 1 is set, so that during seal wire break catching apparatus provided by the present application enters blood vessel, it is not easy to
Scratch instrument or damage blood vessel.Headgear 4 can be made of the assembly of metal material, high molecular material or both and and mandrel
1 distal end securely connects.
Mandrel is mainly characterized by long filament, stick, bar or strip structure, has certain Resisting fractre and tensile strength, main
It is used to connect netted arresting agency 2, headgear 4, developing mark 5, and convenient for operating the expansion of netted arresting agency 2 in vitro
And stretching.And the material of mandrel 1 can be metal, such as Nitinol, stainless steel etc., be also possible to high molecular material, such as PTFE,
PI etc. can also be the compound of multiple material, such as the Nitinol with PTFE coating.It is preferred that mandrel 1 is by having PTEE coating
Nitinol be made, not only can guarantee that mandrel 1 has certain Resisting fractre and tensile strength, but also can guarantee the surface light of mandrel 1
It is sliding, there is better passability.To meet different clinical demands, different materials can be set at different sections for mandrel 1,
It can be same material and be arranged to different dimensional structures,
Preferably, the mandrel 1, netted arresting agency 2, any one or more in headgear 4 are equipped with developing mark 5.
Preferably, any one or more equipped with developing mark in the mandrel 1, netted arresting agency 2, headgear 4
5.It is further preferred that any one or more in mandrel 1, netted arresting agency 2, headgear 4 are respectively equipped with one or more development marks
Note 5.It is preferred that developing mark 5 is arranged on both ends and the outer profile of headgear 4 or netted arresting agency 2.
Preferably, the developing mark 5 is made of any one or more in gold, platinum, tantalum, tungsten, platinum tungsten, platinoiridita, or
By doped with BaSO4Or Bi2O3High molecular material be made.
The X-ray transparent of developing mark 5 is poor, convenient for operator in the course of surgery viewing instruments in human vas
Position and form.Prepare the metal material that the common material of developing mark 5 includes: X-ray transparent difference, such as gold, platinum, tantalum, tungsten,
Platinum tungsten, platinoiridita etc., or doped with the high molecular material of X-ray transparent difference material, such as doped with BaSO4、Bi2O3Macromolecule
Material.The form of developing mark 5 can be cyclic annular, Filamentous, any one in spring like.Developing mark 5 arrests machine with netted
Structure 2, mandrel 1, headgear 2 connection type can be welding, be bonded, winding, any one in welding.
Embodiment 1
A kind of seal wire break catching apparatus, comprising: mandrel 1, the netted arresting agency 2 being fixedly connected with the mandrel 1, the net
Shape arresting agency 2 can be unfolded to reticulate with self-expanding, or be drawn into strip.It is additionally provided with casing 3, described sleeve pipe 3 is set in institute
2 outside of mandrel 1 and the netted arresting agency is stated, the internal diameter of described sleeve pipe 3 is greater than or equal to the net for being drawn into strip
The diameter of shape arresting agency 2, and it is less than the diameter that the netted netted arresting agency 2 is unfolded.The netted arresting agency 2
One end far from mandrel distal end is equipped with proximal connection point 21, and the proximal connection point 21 is fixedly connected with the mandrel 1.The net
Shape arresting agency 2 is equipped with distal attachment points 22 far from one end of the proximal connection point 21, and the distal attachment points 22 can be along institute
State the axial movement of mandrel 1.
The netted arresting agency 2 is made of the metal with shape memory effect through laser cutting.
The distal end of the mandrel 1 is equipped with headgear 4, and the hardness of the headgear 4 is lower than the hardness of the mandrel 1.
The netted arresting agency 2, headgear 4 are respectively equipped with developing mark 5.
The seal wire break catching apparatus that embodiment 1 provides is in use, be first drawn into strip for netted arresting agency 2, and be packed into
In casing 3, casing 3 and netted arresting agency 2 are sent to seal wire head end docking area domain along guiding catheter together, then by casing 3
Recession makes netted arresting agency 2 stretch out casing 3, and self-expanding expansion reticulates, and then by movable wire guide, stretches seal wire head end
Enter the inner space of netted arresting agency 2, then move forward casing 3, and under the extruding of casing 3, netted arresting agency 2 stretches growth
Strip, and seal wire head end is compressed, then casing 3, netted arresting agency 2 and mandrel 1 are dropped back together, drive clamped conductive filament head
End enters inside guiding catheter, and realization seal wire is docked with guiding catheter.When needing to discharge seal wire, conduit 3 of dropping back again makes
Netted arresting agency 2 stretches out casing 3, and self-expanding expansion reticulates, then mandrel 1 of dropping back, seal wire can be from netted arresting agencies 2
Inner space abjection.
Embodiment 2
Identical as the structure of embodiment 1, only developing mark 5 is arranged on mandrel 1.
Embodiment 3
Identical as the structure of embodiment 1, only mandrel 1 protrudes into netted 2 interior section space of arresting agency, is not passed through netted
Arresting agency 2, and it is not provided with headgear 4.
Embodiment 4
It is identical as the structure of embodiment 1, only it is not provided with distal attachment points 22, netted arresting agency 2 is by with high resiliency
High molecular material, it is woven to be made.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (10)
1. a kind of seal wire break catching apparatus characterized by comprising mandrel (1), what is be fixedly connected with the mandrel (1) netted grabs
It catches mechanism (2), the netted arresting agency (2) can be unfolded to reticulate with self-expanding, or be drawn into strip.
2. seal wire break catching apparatus according to claim 1, which is characterized in that the netted arresting agency (2) can be from swollen
Swollen expansion reticulates, or is drawn into strip specifically: is additionally provided with casing (3), described sleeve pipe (3) is set in the mandrel (1)
On the outside of the netted arresting agency (2), the internal diameter of described sleeve pipe (3), which is greater than or equal to, to be drawn into the described of strip and netted grabs
The diameter of mechanism (2) is caught, and is less than the diameter that the netted netted arresting agency (2) is unfolded.
3. seal wire break catching apparatus according to claim 2, which is characterized in that the separate core of the netted arresting agency (2)
One end of axis distal end is equipped with proximal connection point (21), and the proximal connection point (21) is fixedly connected with the mandrel (1).
4. seal wire break catching apparatus according to claim 3, which is characterized in that the netted arresting agency (2) is far from described
One end of proximal connection point (21) is equipped with distal attachment points (22), and the distal attachment points (22) can be axial along the mandrel (1)
It is mobile.
5. seal wire break catching apparatus described in any one of -4 according to claim 1, which is characterized in that the netted arresting agency
(2) it is made by the metal material with shape memory effect or with elastomeric high molecular material, or by with shape memory
The metal material of effect and have elastomeric high molecular material combination be made.
6. seal wire break catching apparatus described in any one of -4 according to claim 1, which is characterized in that the netted arresting agency
(2) it is made or woven is made through laser cutting.
7. seal wire break catching apparatus described in any one of -4 according to claim 1, which is characterized in that the mandrel (1) is by metal
Or high molecular material is made, or is combined and be made by metal and high molecular material.
8. seal wire break catching apparatus described in any one of -4 according to claim 1, which is characterized in that the distal end of the mandrel (1)
Equipped with headgear (4), the hardness of the headgear (4) is lower than the hardness of the mandrel (1).
9. seal wire break catching apparatus according to claim 8, which is characterized in that the mandrel (1), netted arresting agency (2),
It is any one or more equipped with developing mark (5) in headgear (4).
10. seal wire break catching apparatus according to claim 9, which is characterized in that the developing mark (5) by gold, platinum, tantalum,
Tungsten, platinum tungsten, any one or more in platinoiridita are made, or by doped with BaSO4Or Bi2O3High molecular material be made.
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| CN201811132125.4A CN109331321B (en) | 2018-09-27 | 2018-09-27 | Guide wire catching device |
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| CN201811132125.4A CN109331321B (en) | 2018-09-27 | 2018-09-27 | Guide wire catching device |
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| CN109331321B (en) | 2022-02-11 |
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