CN209347154U - Thrombus withdrawing device - Google Patents
Thrombus withdrawing device Download PDFInfo
- Publication number
- CN209347154U CN209347154U CN201822168266.3U CN201822168266U CN209347154U CN 209347154 U CN209347154 U CN 209347154U CN 201822168266 U CN201822168266 U CN 201822168266U CN 209347154 U CN209347154 U CN 209347154U
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- main support
- thrombus
- manipulation line
- distal end
- auxiliary stand
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Abstract
The utility model discloses a kind of thrombus withdrawing device, and the thrombus withdrawing device includes conveying mechanism, operating-controlling mechanism, main support and auxiliary stand.Wherein, conveying mechanism includes delivery pipe；Operating-controlling mechanism includes the manipulation line being movably arranged in delivery pipe and the developing ring that is set in manipulation line；Main support is fixedly installed on the distal end of delivery pipe for the proximal end of reticular structure and main support；Auxiliary stand includes the more helixes that mutually can be wound and discharge, and the proximal end of the helix is fixedly installed in the manipulation line, and the distal end of the helix can be bound by the manipulation line and close to the developing ring.Being cooperated by main support and auxiliary stand collective effect can efficiently removal of thromboses, and the generation of anti-tampon escape phenomenon, bolt is taken to give patient's bring burden repeatedly to mitigate, suitable for preceding circulation, proximal end main artery persistently occludes and the Primary treatment of the ischemic cerebral stroke patients of smaller infarct.
Description
Technical field
The utility model relates to medical instruments field more particularly to a kind of thrombus withdrawing devices.
Background technique
The method of mechanically cutting thrombus (Mechanical Thrombectomy) has become research hotspot in recent years, for
Acute ischemic stroke revascularization caused by vessel occlusion, there is satisfactory clinical effectiveness.Wherein, artery machinery takes
Pin device obtains extensive concern because of having the advantages that many, for example, quickly leading to again, lower hemorrhagic conversion rate and can
Extended stroke interventional time window.It is small that the patient's time window screened based on image is extended to 16 by the research of DEFUSE 3 at present
When, the patient's time window screened based on image has even been extended 24 hours by DAWN research, " the U.S. AHA/ASA of newest publication
Acute apoplexy Early postoperative management guide " it is recommended 6-16 hours with the evidence of highest level bolt is taken to treat, with B-R rank
Evidence recommend 6-24 hours bolt taken to treat.The guide in China and the U.S. all gives the endovascular treatment of suitable patient
Highest recommendation rank and evidence rank, acute ischemic stroke diagnosis and treatment stepped into for 2.0 epoch.
The patient that bolt failure is taken for single-side stand, if thrombus load is larger, when vascular development and preferable vascular wall condition, can
It attempts to use double bracket used in parallel, such as internal carotid end, base soil stress, the occlusion of arteria cerebri media M1 furcation.For
The high load capacity thrombus in internal carotid T word portion takes bolt to be commonly present difficulty, be easy to cause if thrombus is strong but pliable in texture using single-side stand
Thrombus is escaped repeatedly, at the same be not easy to take it is net, can preferred double bracket take bolt；And the occlusion of acute basilar artery point (considers cardiogenic bolt
Plug), when the difficult point for the treatment of is to take bolt to operate according to conventional mechanical, since the traveling of basal arteries tail vein is similar to furcation,
When carrying out taking bolt to side arteria cerebri posterior machinery, thrombus is then pushed out to the other side, cause base soil stress thrombus always without
Method is taken out, and " intractable " thrombus is become.According to preceding circulation arteria cerebri media M1 furcation " intractable " thrombus summarized in the past and
Y-shaped double bracket take bolt experience and document and about Y-shaped bracket take bolt as remedying the report for taking bolt technology, use
When double bracket takes bolt, bilateral cerebral artery is respectively placed in one piece and takes bolt bracket, while withdrawing bracket and combining intermediate conductor by blood
Bolt " presss from both sides out ".But it is noted that first microtubular should be withdrawn from before withdrawing double bracket at the same time, using naked pull technology to increase in
Between space in conduit consequently facilitating negative-pressure ward.
It is higher to being required in the operation of seal wire and microtubular but when double bracket is placed in simultaneously, it be easy to cause between bracket
Entanglement, need more careful attention.Double bracket crossover sites diameter increases, while flexibility declines, to the possibility of injury of blood vessel
Increase, be easy to cause interlayer and inner membrance avulsion, therefore, the blood vessel for crossing minor diameter may be improper, and withdrawing in stent procedures should fill
Divide assessment resistance.In vitro study show it is any take bolt instrument to have damage blood vessel endothelium, only severity is different.Double branch
Frame will definitely increase the drawing and endothelial injuries to blood vessel compared with single bracket takes bolt, and therefore, double bracket takes bolt to be only used as often
Remediation policy when rule operation failure, and non routine operation.In addition, taking bolt to cause the increase of consumptive material expense using double bracket, need
Consider patient's economic capability.
For crossover sites take the main operation point of bolt and difficult point be it is used take bolt instrument to the crawl capture of thrombus and
How the damage that in operating process causes vascular wall is avoided, and for these problems if there is will lead to occluding again for blood vessel, clinic is pre-
Effect is bad afterwards.Therefore, in view of the above deficiencies, it is desirable to provide a kind of novel thrombus withdrawing device and utilize the thrombus withdrawing device
The method for carrying out taking bolt.
Utility model content
The main purpose of the utility model is to provide a kind of thrombus withdrawing device, it is intended to solve intersecting blood vessels position and be difficult to take
The problem of bolt.
To achieve the above object, the utility model proposes thrombus withdrawing device include:
Conveying mechanism, the conveying mechanism include delivery pipe；
Operating-controlling mechanism, the operating-controlling mechanism include the manipulation line being movably arranged in the delivery pipe and are set to
Developing ring in the manipulation line；
Main support, the main support are fixedly installed on the remote of the delivery pipe for the proximal end of reticular structure and the main support
End；And
Auxiliary stand, the auxiliary stand include the more helixes that mutually can be wound and discharge, the proximal end of the helix
It is fixedly installed in the manipulation line, the distal end of the helix can be bound by the manipulation line and close to the development
Ring；
Wherein, after the main support discharges in the blood vessels, the manipulation line can be driven described in the auxiliary stand process
Delivery pipe is passed through from the mesh of the main support and is discharged in the blood vessels, so that the main support and the auxiliary stand collective effect
Removal of thromboses.
Preferably, the operating-controlling mechanism further includes the heat-shrink tube that fixing sleeve is set in the manipulation line, and the developing ring is solid
Surely it is sheathed on the far-end of the heat-shrink tube, the proximal end of the heat-shrink tube can wrap up the distal end of the helix, the development
The outer diameter of ring is less than the maximum outside diameter that the helix mutually winds auxiliary stand when state.
Preferably, the thrombus withdrawing device includes multiple auxiliary stands, and multiple auxiliary stands are along the manipulation line
Extending direction be spaced apart；
And/or the quantity of the helix on the single auxiliary stand is 3~10.
Preferably, the conveying mechanism further includes fixed ring, and the proximal end of the fixed ring and the distal end of the delivery pipe are right
It connects and the main support is set on the distal end of the fixed ring.
Preferably, the mesh on the main support close to proximal end is greater than the mesh close to distal end；
And/or the mesh diameter of the main support is 1.5~6mm.
Preferably, the twine on the main support close to proximal end is coarser than the twine close to distal end；
And/or the diameter on the main support close to the twine of proximal end is 0.08~0.2mm, it is close on the main support
The diameter of the twine of distal end is 0.04~0.1mm.
Preferably, the main support is shape memory alloy components；And/or the main support is equipped with metal coating.
Preferably, push spring circle is provided in the manipulation line, the distal end of the push spring circle is close to the auxiliary branch
The proximal end of frame.
Preferably, the distal end of the manipulation line is provided with guide head.
Preferably, the operating-controlling mechanism further includes the handle for being sheathed on the proximal end of the manipulation line, and the handle includes
The shell being sheathed in the manipulation line and the release member and locking member that are set on the shell, the release member can push away
It send and pulls back the manipulation line, delivery pipe can be lock onto the manipulation line by the locking member.
In the above-mentioned technical solutions, main support is reticular structure, can grab capture thrombus after release, and initially twine
The mesh that main support can be passed through around the auxiliary stand of state reaches scheduled position.Main support has good visuality, helps
It is positioned in device, pathogenesis can be also judged according to the metamorphosis of main support during bolt is taken, guidance operates in next step.Separately
Outside, auxiliary stand includes the more helixes that mutually can be wound and discharge, and the distal end of helix can be bound by manipulation line, when
When helix and thrombus contact, manipulation line of pulling back, developing ring withstands the free end of auxiliary stand, and helix is made mutually to decoherence and be unfolded
Release, to rotatably imbed thrombus.Auxiliary stand voluntarily discharges, and without microtubular, increases suction space, when saving operation
Between, save cerebral ischemic penumbra；The size of auxiliary stand is small, soft noninvasive, can reduce furcation to the greatest extent and take in bolt operation to blood vessel
Damage, instead of double bracket technology, save the cost guarantees good prognosis.Moreover, mutual by main support and auxiliary stand collective effect
Cooperation can efficiently removal of thromboses, and the generation of anti-tampon escape phenomenon, thus mitigate take bolt to give patient's bring repeatedly
Burden.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, the structure that can also be shown according to these attached drawings obtains other attached drawings.
Fig. 1 is the schematic diagram of thrombus withdrawing device in an embodiment of the present invention；
Fig. 2 is the schematic diagram of the thrombus withdrawing device in another embodiment of the utility model with multiple auxiliary stands；
Fig. 3 is schematic diagram of the auxiliary stand in Fig. 2 in release conditions；
Fig. 4 is enlarged diagram of the main support in the utility model in release conditions；
Fig. 5 is that the thrombus withdrawing device of the utility model carries out schematic diagram when bolt being taken to operate to T-type thrombus；
Fig. 6 is schematic diagram of the auxiliary stand in Fig. 5 in release conditions；
Fig. 7 is that the thrombus withdrawing device of the utility model carries out schematic diagram when bolt being taken to operate to unilateral thrombus.
Drawing reference numeral explanation:
1, sheath；2, main support；21, mesh；3, fixed ring；4, guide head；5, developing ring；6, heat-shrink tube；7, auxiliary stand；
71, the first helix；72, the second helix；8, delivery pipe；9, push spring circle；10, manipulation line；11, handle；12, it discharges
Part；13, locking member；14, blood vessel；15, thrombus；16, microtubular；17, intermediate conductor；18, guiding catheter.
The embodiments will be further described with reference to the accompanying drawings for the realization, functional characteristics and advantage of the utility model aim.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describing, it is clear that described embodiment is only a part of the embodiment of the utility model, rather than all
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Under every other embodiment obtained, fall within the protection scope of the utility model.
In the description of the utility model, it is to be understood that " distal end " and " close in the terms of the utility model
End " should be understood as from the direction of attending physician.Distal end is the side far from attending physician, and proximal end is indicated towards master
Control doctor.Right side is proximal end in the attached drawing of the utility model, and left side is distal end.In the present invention, if phrase " axial direction side
To " in this document, it is to be understood as indicating the direction that utility model device is pushed into, with axially vertical direction
It is defined as " radial direction ".In addition, the description for being such as related to " first ", " second " in the present invention is used for description purposes only, and
It should not be understood as its relative importance of indication or suggestion or implicitly indicate the quantity of indicated technical characteristic.It limits as a result,
Having the feature of " first ", " second " can explicitly or implicitly include at least one of the features.In the description of the utility model
In, the meaning of " plurality " is at least two, such as two, three etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " connection ", " fixation " etc. should do broad sense reason
Solution, for example, " fixation " may be a fixed connection, may be a detachable connection, or integral；It can be mechanical connection, it can also
To be electrical connection；It can be directly connected, the connection inside two elements can also be can be indirectly connected through an intermediary
Or the interaction relationship of two elements, unless otherwise restricted clearly.It for the ordinary skill in the art, can be with
The concrete meaning of above-mentioned term in the present invention is understood as the case may be.
It in addition, the technical solution between each embodiment of the utility model can be combined with each other, but must be with ability
Based on domain those of ordinary skill can be realized, it will be understood that when the combination of technical solution appearance is conflicting or cannot achieve
The combination of this technical solution is not present, also not within the protection scope of the requires of the utility model.
In embodiment as shown in Figure 1, the thrombus withdrawing device of the utility model includes conveying mechanism, operating-controlling mechanism, master
Bracket 2 and auxiliary stand 7.Wherein, conveying mechanism includes delivery pipe 8；Operating-controlling mechanism includes movably being arranged in delivery pipe 8
Manipulation line 10 and the developing ring 5 that is set in manipulation line 10；Main support 2 is fixed for the proximal end of reticular structure and main support 2
It is set to the distal end of delivery pipe 8；Auxiliary stand 7 includes the more helixes that mutually can be wound and discharge, and the proximal end of helix is solid
Surely it is set in manipulation line 10 and the distal end of helix can be bound by manipulation line 10 and close to developing ring 5；Also, referring to figure
5, after main support 2 discharges in blood vessel 14, manipulation line 10 can drive auxiliary stand 7 to pass through mesh of the delivery pipe 8 from main support 2
21 pass through and discharge in blood vessel 14, so that main support 2 and 7 collective effect removal of thromboses 15 of auxiliary stand.
In the above-described embodiments, main support 2 is reticular structure, capture thrombus 15 can be grabbed after release, and initial
The mesh 21 that the auxiliary stand 7 of winding state can pass through main support 2 reaches scheduled position.Main support 2 has good visual
Property, facilitate device positioning, pathogenesis can be also judged according to the metamorphosis of main support 2 during bolt is taken, instructs next
Step operation.In addition, auxiliary stand 7 includes the more helixes that mutually can be wound and discharge, the distal end of helix can be bound by
In manipulation line 10.When helix passes through thrombus 15, due to the adhesion strength and frictional force by thrombus 15, auxiliary stand 7 and thrombus
15 keep opposing stationary, and after manipulation line of pulling back 10, developing ring 5 is moved, and withstands the free end of auxiliary stand 7, produce with helix
Raw relative displacement, helix mutually decoherences and is unfolded to discharge, to rotatably imbed thrombus 15, further mutually melts with thrombus 15
It closes.Auxiliary stand 7 can voluntarily discharge, and without microtubular 16, increase suction space, save operating time, save ischemic
Penumbra zone；It is soft noninvasive moreover, the size of auxiliary stand 7 is small, can reduce to the greatest extent furcation take bolt operate in the damage of blood vessel 14
Wound, instead of double bracket technology, save the cost guarantees good prognosis.Moreover, mutual by main support 2 and 7 collective effect of auxiliary stand
Cooperation can efficiently removal of thromboses 15, and the generation of 15 escape phenomenon of anti-tampon, thus mitigate take repeatedly bolt to patient with
Come burden, suitable for it is preceding circulation, proximal end main artery persistently occlude and the ischemic cerebral stroke patients of smaller infarct it is preliminary
Treatment.
Further, as shown in Figures 2 and 3, operating-controlling mechanism can also include the pyrocondensation that fixing sleeve is set in manipulation line 10
Pipe 6,5 fixing sleeve of developing ring are set to the far-end of heat-shrink tube 6, and the proximal end of heat-shrink tube 6 can wrap up the distal end of helix, developing ring
5 outer diameter is less than the maximum outside diameter of auxiliary stand 7 when helix mutually winds state, to prevent from pushing auxiliary stand 7 in manipulation line 10
When developing ring 5 can be contacted with delivery pipe 8 and generate resistance.Developing ring 5 is consolidated in such a way that machinery clamps other than it can develop
It is scheduled on heat-shrink tube 6 (part in manipulation line 10).When by pull back manipulation line 10 when, developing ring 5 moves, and auxiliary stand
7 contact with thrombus 15, since helix has been embedded in thrombus 15, the helix under the action of adhesion strength of thrombus 15 and frictional force
It keeps relatively fixed with thrombus 15, so that developing ring 5 withstands the distal end of helix, generates relative displacement with helix and make pyrocondensation
Pipe 6 deforms, and auxiliary stand 7 decoherences and is unfolded to discharge, rotatably imbeds thrombus 15, be more firmly combined together with thrombus 15,
Complete the capture to thrombus 15.In general, the thrombus 15 positioned at the furcation of blood vessel 14 belongs to cardiogenic embolus, quality mostly
Partially hard, which is unfolded from 15 internal rotating of thrombus, so that thrombus 15 is compacted, in favor of fetching thrombus 15.The number of developing ring 5
Amount corresponds to the free end of auxiliary stand 7, and the free end of an auxiliary stand 7 configures a developing ring 5 and heat-shrink tube 6.Wherein, develop
Ring 5 is made of visual material under X-ray, it is preferable that can by 90% platinum and 10% iridium alloy, gold or 92% platinum with
One or both of 8% tungsten alloy is made.
Wherein, auxiliary stand 7 includes more helixes, is wrapped in manipulation line 10 under loading condition, and proximal end is fixing end,
Helix is welded to one another, but unfixed with manipulation line 10, and only preventing it to be fully deployed can not recycle, and distal end is free end,
Free end relies on the natural curl characteristics of helix, in such a way that one is pressed one, is loaded into manipulation line 10, heat-shrink tube 6 can
Apply certain binding force with the distal end to helix, that is to say, that rely on own mechanical power or frictional force, without by
The external device (ED)s such as microtubular 16 keep its compressive state, save the space of microtubular 16 compared to double bracket technology in this way.
Specifically, the quantity of the helix on single auxiliary stand 7 is 3~10.It is understood that the quantity of helix is fewer, take off
It is smaller to dissipate the power that expansion needs, in general, power required for overcoming the frictional force of its free end to be unfolded is less than 1N.
Referring again to Fig. 1, the half length of heat-shrink tube 6 is on the distal end of helix, the other half length is in manipulation line 10
On, on the one hand effect is the distal end of assisted loading compression auxiliary stand 7, prevent its release of decoherencing during transportation, is provided double
Insurance；On the other hand it shields, protects the distal end of helix indeformable in importing process, make the Distal transition of helix
It is more smooth, prevent the inner membrance of damage blood vessel 14.Wherein, heat-shrink tube 6 is made of high molecular material flexible, to allow helix
Free end deform expansion, manufacture heat-shrink tube 6 high molecular material include but is not limited to polytetrafluoroethylene (PTFE), polyethylene, polyester etc..
As shown in figure 3, the proximal end of heat-shrink tube 6 is turned over after deforming when the release of the distal end of helix.
In another embodiment, referring to figs. 2 and 3, thrombus withdrawing device can also include multiple auxiliary stands 7, Duo Gefu
Bracket 7 is spaced apart along the extending direction of manipulation line 10, wherein the quantity of auxiliary stand 7 can be 1~4, be caught with promoting crawl
The success rate of thrombus 15 is obtained, to mitigate the burden of patient as much as possible.Specifically, in figure 2 and figure 3, one of them auxiliary branch
Frame 7 includes more first helixes 71, another auxiliary stand 7 includes more second helixes 72.In addition, it is necessary to explanation,
When thrombus withdrawing device includes multiple auxiliary stands 7, the distal end of each auxiliary stand 7 is correspondingly provided with heat-shrink tube 6 and development
Ring 5, to guarantee that each auxiliary stand 7 can be discharged according to pre-provisioning request.
Further, the delivery pipe 8 in Fig. 1 can be double-layer structure, and internal layer can be flexible smooth high molecular material,
Such as polytetrafluoroethylene (PTFE) (PTFE) or high density polyethylene (HDPE) (HDPE), thus guarantee that there is extremely low coefficient of friction in lumen,
In order to be swimmingly conveyed auxiliary stand 7 in delivery pipe 8, outer layer is usually made of the material with limited flex, for example,
The biocompatible alloy etc. of Nitinol etc, so that delivery pipe 8 can smoothly reach predeterminated position along blood vessel 14.Conveying
Pipe 8 can be spring ring or hypotube etc. in structure, and hardness is proximally harder to the softer gradual change in distal end, and proximal end can provide centainly
Push power and the distal end of softness can be across tortuous cerebrovascular arrival lesion locations.In addition, conveying mechanism may also include admittedly
Determine ring 3, the proximal end of fixed ring 3 is docked with the distal end of delivery pipe 8 and main support 2 is set on the distal end of fixed ring 3.Wherein, Gu
Determine between ring 3 and delivery pipe 8 and between main support 2 and fixed ring 3 fix by way of welding or crimping.
Wherein, main support 2 is closed loop bracket made of being connected with each other as multiple mesh cells, and entire rack surface has 3
~6 wave crests or trough.Mesh cells on main support 2 twist arrange.Further, close to proximal end on main support 2
Mesh 21 is greater than the mesh 21 close to distal end, and specifically, the proximal end conical section of main support 2 has super large mesh, on the one hand convenient
Blood flow enters, and alleviates the ischemic conditions of brain tissue, on the other hand passes through convenient for auxiliary stand 7, reaches the opposite side point of blood vessel 14
Branch release.Make to push the bad problem of power in order to avoid mesh 21 is excessive, the twine on main support 2 close to proximal end is coarser than close
The twine of distal end, specifically, the twine thickening of the twine of proximal end super large mesh with respect to the other positions of main support 2.Main branch
Diameter on frame 2 close to the twine of proximal end is 0.08~0.2mm, the diameter on main support 2 close to the twine of distal end is 0.04~
0.1mm, that is to say, that the mesh wire diameter of the super large mesh of main support 2 is between 0.08~0.2mm, and the twine of other positions
Diameter is between 0.04~0.1mm.
Further, then main support 2 is preferably obtained by 3D laser cut metal tubing after heat treatment shaping, net
Bore dia can be 1.5~6mm.Wherein, the pipe length for making main support 2 is preferably 15~50mm, maximum outside diameter 1.5
~7mm, tube wall thickness are 0.05~0.2mm.In a preferred embodiment, main support 2 can also be made of shape-memory material,
Belong to self-expanding expansion bracket, wherein material is preferably Nitinol.In addition, being also provided with metal painting on main support 2
The visuality under X-ray can be improved in layer, such as tantalum, so that main support 2 be made to realize whole course visible.
In addition, in order to promote the push performance of auxiliary stand 7, being provided with push spring in manipulation line 10 referring again to Fig. 3
Circle 9, the distal end of push spring circle 9 is close to the proximal end of auxiliary stand 7.And preset bolt is taken to enable auxiliary stand 7 smoothly to reach
Position, the distal end of manipulation line 10 are provided with guide head 4.Manipulation line 10 can penetrate delivery pipe 8 and axially be moved freely,
The guide head 4 (Tip head 4, spring ring coil) of distal end is soft noninvasive, and the material of guide head 4 can be marmem, for example,
Nitinol etc..
In order to promote the operating characteristics of thrombus withdrawing device, in a more preferred embodiment, referring again to Fig. 1, machine is manipulated
Structure further includes the handle 11 for being sheathed on the proximal end of manipulation line 10, and handle 11 includes the shell being sheathed in manipulation line 10 and sets
It is placed in release member 12 on shell and locking member 13, release member 12 can push and pull back manipulation line 10, and locking member 13 can
Delivery pipe 8 is lock onto manipulation line 10, the relative position of the two can be kept to fix, can integrally pull back carry out taking bolt at this time.
Further, the utility model also provides a kind of application method using above-mentioned thrombus withdrawing device comprising with
Lower step:
S1, by seal wire pass through blood vessel 14 in thrombus 15 after, make the microtubular being sheathed on seal wire 16 pass through thrombus 15, so
After withdraw seal wire；
S2, auxiliary stand 7 is loaded into manipulation line 10, and manipulation line 10 is penetrated into delivery pipe 8；
S3, the distal end that main support 2 is pushed to microtubular 16 recall microtubular 16 and discharge main support 2, wait preset time
Manipulation line 10 is pushed afterwards, and auxiliary stand 7 is made to pass through the distal end of the arrival thrombus 15 of mesh 21 of main support 2；
S4, pre-determined distance that manipulation line 10 is pulled back discharge auxiliary stand 7；
S5, delivery pipe 8 is lock onto manipulation line 10, and recalls delivery pipe 8 and manipulation line 10, make main support 2 and auxiliary branch
7 collective effect removal of thromboses 15 of frame.
Wherein, the sheath 1 in Fig. 1 wraps up main support 2, before main support 2 reaches preset releasing position, by sheath 1
It wraps, to prevent main support 2 from scattering.It is mutual by main support 2 and 7 collective effect of auxiliary stand in aforesaid operations method
Cooperation can efficiently removal of thromboses 15, and the generation of 15 escape phenomenon of anti-tampon, thus mitigate take repeatedly bolt to patient with
Come burden, suitable for it is preceding circulation, proximal end main artery persistently occlude and the ischemic cerebral stroke patients of smaller infarct it is preliminary
Treatment.
Specifically, in one embodiment, referring to Fig. 7, unilateral thrombus 15 at common single vessel takes bolt to grasp
Include the following steps: as method
1, using iconography equipment such as DSA (digital subtraction angiography), position and the size for measuring target thrombus 15 are big
It is small, the length of target thrombus 15 is confirmed, using standard method by guiding catheter 18 (8F guiding catheter or balloon guide catheter)
Or 5F/6F intermediate conductor 17 is sent to as close to the position of thrombus 15；
2, by microtubular 16 (0.017 " or 0.021 ") by 0.014, " seal wire is (not shown) to pass through thrombus 15, according to main branch
Effective active length of frame 2 is selected, and can cover the length of thrombus 15 after discharging main support 2, and thrombus 15 is made to be located at master
The proximal end of bracket 2, then withdraws seal wire；
3, instrument is taken out from the package, and checks whether intact, whether auxiliary stand 7 is loaded in manipulation line 10, with life
Reason salt water penetrates delivery pipe 8 after being rinsed together；
4, main support 2 is advanced to the distal end of microtubular 16 by sheath 1, microtubular 16 is withdrawn and discharges main support 2, wait
Gap (3min) continues to push manipulation line 10, eventually passes through main support 2, and auxiliary stand 7 is made to reach the distal end of thrombus 15；
5, auxiliary stand 7 is unfolded in the release member 12 in operation handle 11 and manipulation line 10 of pulling back；
If 6, taking bolt front opening sacculus using balloon guide catheter, prepare syringe suction；
7, locking member 13 is tightened, delivery pipe 8 and manipulation line 10 are clamped, and are kept the relative position of the two to fix and (are led at this time
Bracket 2 is connected with auxiliary stand 7, and auxiliary stand 7, which rises, increases effective active length, the effect that anti-tampon 15 is escaped), integrally pull back into
Row takes bolt and continues to aspirate, and completion takes bolt process；
8, radiography assessment blood flow understanding and considerate condition again can carry out secondary taking bolt, same root blood if taking bolt failure or taking bolt incomplete
Pipe 14 can at most be taken bolt three times.
In addition, the thrombus withdrawing device of the utility model also has very well the thrombus for the T-type for being located at 14 bifurcation of blood vessel
Effect.When thrombus 15 is T-shaped, the thrombus 15 of T-type includes the first distal end and the second distal end.The above-mentioned application method the step of
In S3, main support 2 is discharged in the first distal end of thrombus 15, and the mesh 21 that auxiliary stand 7 passes through the proximal end of main support 2 reaches thrombus 15
Second distal end.In actual use, can position according to thrombus 15 and load size, choose difference and take bolt strategy, prevent
Thrombus 15 is escaped, and raising takes bolt efficiency.
It specifically, in another embodiment, referring to figs. 5 and 6, include such as the bolt operating method that takes of the thrombus of T-type
Lower step:
1, using iconography equipment such as DSA (digital subtraction angiography), position and the size for measuring target thrombus 15 are big
It is small, the length of target thrombus 15 is confirmed, using standard method by guiding catheter 18 (8F guiding catheter or balloon guide catheter)
Or 5F/6F intermediate conductor 17 is sent to as close to the position of thrombus 15；
2, by microtubular 16 (0.017 " or 0.021 ") by 0.014, " seal wire is (not shown) to pass through thrombus 15, according to main branch
Effective active length of frame 2 is selected, and can cover the length of thrombus 15 after discharging main support 2, and thrombus 15 is made to be located at master
The proximal end of bracket 2, then withdraws seal wire；
3, instrument is taken out from the package, and checks whether intact, whether auxiliary stand 7 is loaded in manipulation line 10, with life
Reason salt water penetrates delivery pipe 8 after being rinsed together；
4, main support 2 is advanced to the distal end of microtubular 16 by sheath 1, withdraws microtubular 16, and the of thrombus 15
One distal end release main support 2, waits gap (3min) to continue to push manipulation line 10, last auxiliary stand 7 passes through 2 proximal end of main support
Super large mesh makes auxiliary stand 7 reach the second distal end of thrombus 15；
5, auxiliary stand 7 is unfolded in the release member 12 in operation handle 11 and manipulation line 10 of pulling back；
If 6, taking bolt front opening sacculus using balloon guide catheter, prepare syringe suction；
7. tightening locking member 13, delivery pipe 8 and manipulation line 10 are clamped, and are kept the relative position of the two to fix and (are led at this time
Bracket 2 is in parallel with auxiliary stand 7, and auxiliary stand 7 assists main support 2 to press from both sides out thrombus 15), it integrally pulls back and carries out taking bolt and continue to aspirate,
Completion takes bolt process；
8, radiography assessment blood flow understanding and considerate condition again can carry out secondary taking bolt, same root blood if taking bolt failure or taking bolt incomplete
Pipe 14 can at most be taken bolt three times.
The above is only the preferred embodiments of the utility model, and therefore it does not limit the scope of the patent of the utility model, all
Under the utility model design of the utility model, equivalent structure made based on the specification and figures of the utility model becomes
It changes, or directly/be used in other related technical areas indirectly and be included in the scope of patent protection of the utility model.
Claims (10)
1. a kind of thrombus withdrawing device, which is characterized in that the thrombus withdrawing device includes:
Conveying mechanism, the conveying mechanism include delivery pipe；
Operating-controlling mechanism, the operating-controlling mechanism include the manipulation line being movably arranged in the delivery pipe and are set to described
Developing ring in manipulation line；
Main support, the main support are fixedly installed on the distal end of the delivery pipe for the proximal end of reticular structure and the main support；
And
Auxiliary stand, the auxiliary stand include the more helixes that mutually can be wound and discharge, and the proximal end of the helix is fixed
It is set in the manipulation line, the distal end of the helix can be bound by the manipulation line and close to the developing ring；
Wherein, after the main support discharges in the blood vessels, the manipulation line can drive the auxiliary stand by the conveying
Pipe is passed through from the mesh of the main support and is discharged in the blood vessels, so that the main support and the auxiliary stand collective effect are taken out
Thrombus.
2. thrombus withdrawing device as described in claim 1, which is characterized in that the operating-controlling mechanism further includes that fixing sleeve is set to institute
The heat-shrink tube in manipulation line is stated, the developing ring fixing sleeve is set to the far-end of the heat-shrink tube, the proximal end energy of the heat-shrink tube
The distal end of the helix is enough wrapped up, the outer diameter of the developing ring is less than the helix and mutually winds auxiliary stand when state
Maximum outside diameter.
3. thrombus withdrawing device as described in claim 1, which is characterized in that the thrombus withdrawing device includes multiple described auxiliary
Bracket, multiple auxiliary stands are spaced apart along the extending direction of the manipulation line；
And/or the quantity of the helix on the single auxiliary stand is 3~10.
4. thrombus withdrawing device as claimed in any one of claims 1-3, which is characterized in that the conveying mechanism further includes solid
Determine ring, the proximal end of the fixed ring is docked with the distal end of the delivery pipe and the main support is set to the distal end of the fixed ring
On.
5. thrombus withdrawing device as claimed in any one of claims 1-3, which is characterized in that close to proximal end on the main support
Mesh be greater than close to distal end mesh；
And/or the mesh diameter of the main support is 1.5~6mm.
6. thrombus withdrawing device as claimed in any one of claims 1-3, which is characterized in that close to proximal end on the main support
Twine be coarser than the twine close to distal end；
And/or the diameter on the main support close to the twine of proximal end is 0.08~0.2mm, close distal end on the main support
Twine diameter be 0.04~0.1mm.
7. thrombus withdrawing device as claimed in any one of claims 1-3, which is characterized in that the main support is shape memory
Alloy components；And/or the main support is equipped with metal coating.
8. thrombus withdrawing device as claimed in any one of claims 1-3, which is characterized in that be provided with and push away in the manipulation line
Spring ring is sent, the distal end of the push spring circle is close to the proximal end of the auxiliary stand.
9. thrombus withdrawing device as claimed in any one of claims 1-3, which is characterized in that the distal end of the manipulation line is arranged
There is guide head.
10. thrombus withdrawing device as claimed in any one of claims 1-3, which is characterized in that the operating-controlling mechanism further includes
It is sheathed on the handle of the proximal end of the manipulation line, the handle includes the shell being sheathed in the manipulation line and is set to
Release member and locking member on the shell, the release member can push and pull back the manipulation line, and the locking member can
Delivery pipe is lock onto the manipulation line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822168266.3U CN209347154U (en) | 2018-12-21 | 2018-12-21 | Thrombus withdrawing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822168266.3U CN209347154U (en) | 2018-12-21 | 2018-12-21 | Thrombus withdrawing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209347154U true CN209347154U (en) | 2019-09-06 |
Family
ID=67800441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822168266.3U Active CN209347154U (en) | 2018-12-21 | 2018-12-21 | Thrombus withdrawing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209347154U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109464175A (en) * | 2018-12-21 | 2019-03-15 | 北京久事神康医疗科技有限公司 | Thrombus withdrawing device and its application method |
| CN113440216A (en) * | 2021-07-27 | 2021-09-28 | 苏州铨通医疗科技有限公司 | Thrombectomy device and medical device |
-
2018
- 2018-12-21 CN CN201822168266.3U patent/CN209347154U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109464175A (en) * | 2018-12-21 | 2019-03-15 | 北京久事神康医疗科技有限公司 | Thrombus withdrawing device and its application method |
| CN109464175B (en) * | 2018-12-21 | 2023-10-20 | 北京久事神康医疗科技有限公司 | Thrombus removal device and method of using same |
| CN113440216A (en) * | 2021-07-27 | 2021-09-28 | 苏州铨通医疗科技有限公司 | Thrombectomy device and medical device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Thrombus removal device Effective date of registration: 20221220 Granted publication date: 20190906 Pledgee: Bank of Hangzhou Limited by Share Ltd. Beijing Zhongguancun branch Pledgor: BEIJING JIUSHI SHENKANG MEDICAL TECHNOLOGY CO.,LTD. Registration number: Y2022980025994 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Granted publication date: 20190906 Pledgee: Bank of Hangzhou Limited by Share Ltd. Beijing Zhongguancun branch Pledgor: BEIJING JIUSHI SHENKANG MEDICAL TECHNOLOGY CO.,LTD. Registration number: Y2022980025994 |