CN207168608U - Recoverable arteries filter - Google Patents
Recoverable arteries filter Download PDFInfo
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- CN207168608U CN207168608U CN201720013863.1U CN201720013863U CN207168608U CN 207168608 U CN207168608 U CN 207168608U CN 201720013863 U CN201720013863 U CN 201720013863U CN 207168608 U CN207168608 U CN 207168608U
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- filter screen
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- secondary filter
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Abstract
The utility model discloses a kind of recoverable arteries filter, including can diametrically compress or expansion main filter screen, secondary filter screen, main filter screen includes supporting part, obstruction portion and main connecting portion；The end set in described obstruction portion has contraction network interface, and the end face of described main connecting portion offers through hole, shrinks the side that network interface is located at through hole；Described secondary filter screen is umbrella-shaped structure in the deployed state, and secondary filter screen is arranged on a secondary end for placing seal wire；When secondary filter screen is in compressive state, under the secondary promotion for placing seal wire, secondary filter screen can sequentially pass through described through hole, contraction network interface is entered in the main filter screen under deployed condition；It is provided with secondary filter screen for the secondary connecting portion with described main connecting portion docking.The utility model is the vascular filter for recoverable, with mesh form filtering thrombus, cancer embolus or other tissue loss things, to reducing in art, postoperative embolic risk, increases operation safety, lifting patient's outcome has significant meaning.
Description
Technical field
The utility model is related to a kind of operational tool, and in particular to it is a kind of be positioned over it is in sustainer, may filter that thrombus, cancer
The recoverable vascular filter of bolt or other tissue loss things.
Background technology
Ultrasound guidance is through AHCM interventricular septum radio-frequency ablation procedure and ultrasound guidance through chest cardiac tumor
Radio-frequency ablation procedure has been applied in clinic as new technology, and they are under color Doppler ultrasound guiding, pass through heart
Probe carries out puncture prelocalization under major axis or short axis view guiding ray mode, radio-frequency electrode pin is fixed on into puncture supporter, through chest
Intercostal inserting needle by bone, sequentially passes through skin, hypodermis, pericardium, into pre- ablation site, for hypertrophic cardiomyopathy using warp
The apex of the heart enters interventricular septum, is used for cardiac tumor and enters knurl body through tumour basal part, and ultrasound is supervised in real time during inserting needle
Survey, be then fixed under power and melt using radio frequency, continue for some time, to reach the purpose for the treatment of.
In order to prevent the thrombus, cancer embolus or other groups that are likely to occur for a period of time in radiofrequency ablation procedures or after RF ablation
Knit cast, particularly melt myocardium of ventricular septum or occur during left ventricle tumour left room thrombus, cancer embolus or other tissue loss with
Blood flow enters sustainer and then causes the severe complication of cerebral embolism or its hetero-organization embolism, it is necessary to a kind of arteries filter group
Part, aorta ascendens is placed on, with mesh form filtering thrombus, cancer embolus or other tissue loss things, without hindering sustainer
In blood flow, with reach prevention embolic complications purpose.
At present, artery filter is less in the vascular filter clinically applied, and the overwhelming majority is vena cava filter, can be divided again
For permanent filter and provisional filter.Permanent filter using more, its be implanted into be fixed on vascular wall it is lifelong with human body,
But because it resides in internal, it is necessary to take anticoagulant throughout one's life for a long time as foreign matter, and it is likely to occur displacement, perforation or local blood
The complication such as bolt formation；And provisional filter is recoverable filter, in vivo using recyclable taking-up after a period of time, and then
The complication that permanent filter is brought is avoided, but because the problems such as angiosynizesis, parcel can cause filter recovery difficult again.Together
When, existing artery filter is applied to lesion on the arch of aorta, can prevent cerebral embolism, but it is difficult recovery to be all present, blood during recovery
The problems such as bolt easily overflows, come off.
As can be seen here, existing vascular filter is not suitable for solving current problem, it is necessary to a kind of new blood vessel filter at present
Device, particularly a kind of sustainer that is positioned over may filter that thrombus, cancer embolus or other tissue loss things without obstruction aortic flow
Recoverable vascular filter.
The content of the invention
For above-mentioned problems of the prior art, the purpose of this utility model is, there is provided a kind of recoverable moves
Arteries and veins vascular filter, is positioned in sustainer, and thrombus, cancer embolus or other tissue loss things are filtered in the form of filter screen, without hindering
Blood flow in sustainer, the generation of the complication such as embolism can be prevented, and use recoverable structure, can be by filter together with filtering
Thing reclaims together.
In order to realize above-mentioned task, the utility model uses following technical scheme：
A kind of recoverable arteries filter, including can diametrically compress or expansion main filter screen, secondary filter screen, it is main
Filter screen includes supporting part, obstruction portion and main connecting portion, wherein, supporting part, obstruction portion are integral type structure, one end of supporting part
Penetrating, supporting part inside obstruction portion with connecting；The end set in described obstruction portion has contraction network interface, described main connecting portion
End face offers through hole, shrinks the side that network interface is located at through hole；
Described secondary filter screen is umbrella-shaped structure in the deployed state, and secondary filter screen is arranged on a secondary end for placing seal wire；
When secondary filter screen is in compressive state, under the secondary promotion for placing seal wire, secondary filter screen can sequentially pass through described through hole, shrink network interface
The main its interior entered under deployed condition；It is provided with secondary filter screen for the pair with described main connecting portion docking
Connecting portion.
Further, when described main filter screen is in compressive state, in an Arterial sheath, the circumference of main filter screen by
It can not deploy to the limitation of Arterial sheath inwall；Dismountable main placement seal wire is provided with described main connecting portion, when dynamic
After vein sheath pipe is reached in sustainer, main filter screen is released from Arterial sheath front end using main placement seal wire, now the week of main filter screen
Deploy to limitation is lost, described supporting part and sustainer inwall Elastic Contact.
Further, when described secondary filter screen is in compressive state, in a secondary filter screen sheath, described secondary connection
Portion is sleeved on outside secondary filter screen sheath, and secondary filter screen sheath can move axially relative to secondary connecting portion；Described main connecting portion, it is secondary even
After socket part docking, secondary filter screen sheath is promoted, after the front end of secondary filter screen sheath is passed through described through hole, struts described contraction net
Mouth simultaneously enters main its interior, recycles secondary seal wire of placing to release secondary filter screen from secondary filter screen sheath front end, now secondary filter screen
Circumference lose limitation and main its interior deploy.
Further, described main connecting portion is tube-shaped structure, and one end of main connecting portion is penetrating, and the other end is provided with solid
Fixed board, described through hole are opened in fixed plate；Main connecting portion is internally provided with internal thread, before described main placement seal wire
End is provided with the first external screw thread with described screw-internal thread fit.
Further, described secondary connecting portion is docked with main connecting portion by the way of magnetic attracting：Described pair
Connecting portion front end is magnetic texure, and described main connecting portion is metal structure.
Further, described secondary connecting portion front end is provided with the second external screw thread with described screw-internal thread fit.
Further, a diameter of 4~5mm of described main placement seal wire, length after the expansion of main filter screen vertically for 2~
4cm。
Further, the supporting part of described main filter screen, obstruction portion are worked out by medical niti-shaped memorial alloy silk,
The supporting part of main filter screen, obstruction portion collectively form funnel-shaped structure in the deployed state, wherein, the external diameter of supporting part is consistent, from
The variation tendency of supporting part to obstruction portion external diameter is：Reduction, increase reduce again, and described receipts are finally formed in the end in obstruction portion
Contracting network interface.
The utility model has following technical characterstic compared with prior art：
1. the utility model is a kind of vascular filter component of recoverable, can be filtered with mesh form thrombus, cancer embolus or
Other tissue loss things, are positioned over sustainer, particularly aorta ascendens, and suitable for radiofrequency ablation procedures or RF ablation is latter
The section time, the generation of the prevention complication such as embolism, to reducing in art, postoperative embolic risk, increase operation safety, lift patient
Outcome has significant meaning, while causes patient's potential risk to have protective effect some uncertain factors；
2. the utility model is simple in construction, good cooperation can be carried out with existing operating theater instruments, it is controllable during use
Property it is good, each operating process is convenient and precisely, has filled up the blank in the field, a kind of supporting so as to be provided for radio-frequency ablation procedure
Contaminant filter reclaims component, can significantly improve surgical effect, and for the field Therapy study provide new reference thinking with
Developing direction.
Brief description of the drawings
Fig. 1 is located at structural representation when compressive state is in Arterial sheath for main filter screen；
Fig. 2 be main filter screen from Arterial sheath front end release be in deployed condition when structural representation；
Fig. 2-1 is the end structure illustration of main filter screen；
Fig. 2-2 is the structural representation of main connecting portion；
Fig. 3 is main connecting portion and the main structural representation placed when seal wire separates；
Fig. 4 is the structural representation before secondary connecting portion and the docking of main connecting portion；
Fig. 5 is the structural representation after secondary connecting portion and the docking of main connecting portion；
Fig. 6 is that secondary filter screen sheath passes through contraction network interface to be pushed into structural representation when in main filter screen；
Fig. 7 is structural representation of the secondary filter screen after main its interior opening；
Structural representation when Fig. 8 is main filter screen, secondary filter screen reclaims jointly；
Label represents in figure：1-main filter screen, 101-supporting part, 102-obstruction portion, 2-Arterial sheath, 3-main connection
Portion, 4-main placement seal wire, 5-internal thread, 6-fixed plate, 7-shrink network interface, 8-through hole, 9-clamping ring, 10-secondary connection
Portion, the 11-the second external screw thread, 12-secondary filter screen sheath, 13-secondary filter screen, 14-secondary place seal wire.
Embodiment
Existing vascular filter is vein blood vessel filter, and the flow direction of venous blood is to flow to heart by limbs, therefore only needs stock
Vein is implanted into a filter screen, the i.e. secondary filter screen direction such as this programme, is withdrawn after placement.
And this programme is designed as aorta vessel filter, the flow direction of arterial blood is to flow to limbs by heart, inserts filter screen side
The main filter screen direction in for this programme, but need to be pulled backward during recovery, the risk of filtrate omission be present, therefore secondary filter need to be added
Net, clad structure is formed, to complete filter recovery and prevent filtrate from omitting.
Above-mentioned technical proposal is deferred to, as shown in Figures 1 to 8, a kind of recoverable arteries filter, including can be radially
Upper compression or expansion main filter screen 1, secondary filter screen 13；In the utility model, main filter screen 1 and secondary filter screen 13 are network structure,
Flexible, elasticity here refers in the presence of by external pressure, can diametrically compress, and makes main filter screen 1 and secondary filter
Net 13 reduces external diameter, in order to reach blood vessel precalculated position by sheath, and after the constraint of external force is lost, main filter screen 1, secondary filter
Net 13 is deployable into nature, i.e. deployed condition.That is, in the presence of elastic force, main filter screen 1, secondary filter screen 13 have certainly
The dynamic ability for recovering original shape, such as some medical materials, niti-shaped memorial alloy, or the equal energy such as other memory alloy materials
Meet above-mentioned requirements.When blood with impurity flows through main filter screen 1, thrombus, cancer embolus and other tissue loss things etc. are by main filter screen 1
Stop, stay in main filter screen 1, and blood continues to flow through main filter screen 1.
As shown in figure 1, main filter screen 1 includes supporting part 101, obstruction portion 102 and main connecting portion 3, wherein, supporting part 101,
Obstruction portion 102 is integral type structure, and one end of supporting part 101 is penetrating, and supporting part 101 connects with the inside of obstruction portion 102；With miscellaneous
The blood of matter is entered inside main filter screen 1 from the penetrating one end of supporting part 101, and is finally blocked in obstruction portion 102.Stop
The external diameter in portion 102 is less than the external diameter of supporting part 101, and supporting part 101 connects after the expansion of whole filter screen with aortic blood inside pipe wall
Touch, play a part of blocking blood vessel while fixed main filter screen 1 comprehensively.The end set in described obstruction portion 102 has contraction network interface
7, contraction network interface 7 here is an elastic network interface, and specifically, shrinking network interface 7 includes a bullet circle, in its natural state,
The internal diameter very little of bullet circle, and bullet circle can also strut in the presence of external force, the internal diameter of bullet circle is become big, be similar to oversleeve
Cuff portion.The end face of described main connecting portion 3 offers through hole 8, shrinks the side that network interface 7 is located at through hole 8；Described through hole
8 provide a passage for the traveling of secondary filter screen 13, and obstruction portion 102 is carried out with main connecting portion 3 in the circumference in obstruction portion 102
Connection, clamping ring 9 is formed, to ensure the stable connection of the two, foregoing contraction network interface 7 is located at the side of through hole 8, i.e. obstruction portion
102 and the junction of 3 upper mounted plate of main connecting portion 6 a loop diameter be more than through hole 8 diameter, make junction do not influence shrink network interface
7 opening or contraction.
When main filter screen 1 is in compressive state, in an Arterial sheath 2, the circumference of main filter screen 1 is by Arterial sheath 2
The limitation of inwall and can not deploy；This Arterial sheath 2 is used for and interventional operation equipment is engaged, and main filter screen 1 is transported to pre-
Fixed position, while main filter screen 1 is kept compressive state；Dismountable main placement is provided with described main connecting portion 3 to lead
Silk 4, after Arterial sheath 2 is reached in sustainer, main filter screen 1 is released from the front end of Arterial sheath 2 using main placement seal wire 4, this
When main filter screen 1 circumference lose limitation and deploy, described supporting part 101 and sustainer inwall Elastic Contact；Here elasticity
Contact refers to that the external diameter of supporting part 101 is somewhat larger compared with the internal diameter of blood vessel, main filter screen 1 is effectively blocked blood vessel, avoids leading
Filter screen 1 leaves gap after deploying between main filter screen 1 and vascular wall.
Described secondary filter screen 13 is umbrella-shaped structure in the deployed state, and secondary filter screen 13 is arranged on a pair and places seal wire 14
End；The effect of secondary filter screen 13 is, when main filter screen 1 is reclaimed, the main self-filtering of filter screen 1 is coated jointly with main filter screen 1
Impurity, prevent that impurity is entered in blood when main filter screen 1 from reclaiming.When secondary filter screen 13 is in compressive state, seal wire 14 is placed in pair
Promotion under, secondary filter screen 13 can sequentially pass through described through hole 8, shrink the main filter screen 1 that network interface 7 is entered under deployed condition
It is internal；It is provided with secondary filter screen 13 for the secondary connecting portion 10 with the described docking of main connecting portion 3.
When secondary filter screen 13 is in compressive state, in a secondary filter screen sheath 12, described secondary connecting portion 10 is sleeved on
Outside secondary filter screen sheath 12, secondary filter screen sheath 12 can move axially relative to secondary connecting portion 10, i.e., the two is not connected to, and only covers
Dress relation；After described main connecting portion 3, secondary connecting portion 10 dock, secondary filter screen sheath 12 is promoted, makes the front end of secondary filter screen sheath 12
Through after described through hole 8, strut described contraction network interface 7 and enter inside main filter screen 1, recycle secondary seal wire 14 of placing will
Secondary filter screen 13 is released from the secondary front end of filter screen sheath 12, and now the circumference of secondary filter screen 13 loses limitation and deployed inside main filter screen 1.
As illustrated, in this programme, main connecting portion 3 is tube-shaped structure, and one end of main connecting portion 3 is penetrating, the other end
Fixed plate 6 is provided with, described through hole 8 is opened in fixed plate 6；Main connecting portion 3 is internally provided with internal thread 5, described
The main front end for placing seal wire 4 is provided with the first external screw thread coordinated with described internal thread 5, so by being turned to different directions
Main placement seal wire 4, you can realize the connection or dismounting of main placement seal wire 4 and main connecting portion 3.
Main filter screen 1 when being reclaimed, it is necessary to first carry out inserting for secondary filter screen 13, when inserting, an important ring
Section is exactly to be docked the secondary connecting portion 10 of secondary filter screen 13 with main filter screen 1.In this programme, secondary connecting portion 10 and main connecting portion 3
Docked by the way of magnetic attracting：The described front end of secondary connecting portion 10 is magnetic texure, such as before secondary connecting portion 10
End sets magnet circle, or is magnetized the secondary front end of connecting portion 10 using magnet using preceding, its band is magnetic；Described
Main connecting portion 3 is metal structure, and main connecting portion 3 can also be magnetic texure, as long as ensureing that the two can adhesive；Secondary connecting portion
The shape of 10 front ends matches with main connecting portion 3, when secondary connecting portion 10 is close to main connecting portion 3, guiding and adhesive in magnetic force
Under effect, the docking of main connecting portion 3 and secondary connecting portion 10 will can be easily carried out.
, it is necessary to the conveying of secondary filter screen 13 be carried out, to keep the company of the two after being docked due to main connecting portion 3, secondary connecting portion 10
Connect it is firm, in this programme, the secondary front end of connecting portion 10 be provided with described internal thread 5 coordinate the second external screw thread 11；Both i.e.
After docking, then secondary connecting portion 10 is turned, make main connecting portion 3, secondary connecting portion 10 sealed using screw thread, so promote secondary filter screen forward
During sheath 12, the position of main filter screen 1 would not change.
The course of work of the present utility model is described with reference to the drawings：
Note：In order to more clearly show structure of the present utility model, it is related to tubular structure in accompanying drawing, is axial section view
Form embodied.
As shown in figure 1, illustrating the composition structure of the main part of filter screen 1, it is mainly by main filter screen 1, main connecting portion 3, master
Place seal wire 4 and Arterial sheath 2.Fig. 1 is that main filter screen 1 is located at state when in Arterial sheath 2, now the circumference of main filter screen 1 by
To the limitation of sheath tube wall, main filter screen 1 is in compressive state.In the present embodiment, the supporting part 101 of main filter screen 1, obstruction portion 102 by
Niti-shaped memorial alloy silk is worked out with web form, i.e., is first compiled into net circle in a circumferential direction, then is axially extended,
External diameter is adjusted while extension, ultimately forms the main structure of filter screen 1.As shown in Fig. 2 the supporting part 101 of main filter screen 1, obstruction portion 102
Funnel-shaped structure is collectively formed in the deployed state, wherein, the external diameter of supporting part 101 is consistent, self-supporting portion 101 to obstruction portion
The variation tendency of 102 external diameters is：Reduction, increase reduce again, and the two is seamlessly transitted, and obstruction portion 102 is formed pocket shape structure, with
Accommodate more impurity；Simultaneously as the external diameter in obstruction portion 102 is less than supporting part 101, therefore also will not be miscellaneous due to inside aggregation
Matter and influence normal blood flow；The medical niti-shaped memorial alloy silk used in foregoing braided material, i.e. the present embodiment
Described contraction network interface 7 is finally formed in the end in obstruction portion 102；I.e. braided material is when working out to the end, constantly in diminution
Footpath, the final shaping that end is carried out using a bullet circle, bullet circle is fixed the end of braided material, simultaneously because its bullet
Property effect so that its formed shrink the structure of network interface 7.In the present embodiment, main connecting portion 3, main placement seal wire 4 use superslide coating
Stainless steel, wherein main a diameter of 4~5mm, the preferably 4.826mm for placing seal wire 4, i.e., 0.19 inch, the arterial sheath of use
The specification of pipe 2 is 18F.
The percutaneous puncture of Arterial sheath 2 is entered into femoral artery, sheath is constantly adjusted and drives in the wrong direction to aorta ascendens, afterwards in sheath
It is sent into main filter screen 1 and reaches state as shown in Figure 1, further releases main placement seal wire 4 as shown by arrows, make main filter screen 1 from artery
Discharged in sheath 2, main filter screen 1 automatically opens up, as shown in Figure 2.
In the present embodiment, length vertically is 2~4cm, preferably 3cm after main filter screen 1 deploys, the maximum of main filter screen 1
Depending on diameter is with aorta diameter, generally 2~4cm, preferably 3.5cm；In main filter screen 1, the length in obstruction portion 102 is 1cm,
A diameter of 1cm, when main filter screen 1 is fixed with active inner vessel wall, main filter screen 1 is placed and completed；The external diameter of main connecting portion 3 be 4~
5mm, preferably 4.826mm, i.e., 0.19 inch, internal diameter 4mm, length 4mm.The main specification for placing seal wire 4 and main connecting portion 3
Match, i.e. 4~5mm of external diameter, nose threads structure length is 4mm.
After the completion of main filter screen 1 is placed, rotate counterclockwise is main to place seal wire 4, makes between main placement seal wire 4 and main connecting portion 3
Helicitic texture separate, as shown in figure 3, now together exit Arterial sheath 2 and it is main placement seal wire 4.
As shown in figure 4, illustrating the structure composition of secondary filter screen 13, the secondary specification of filter screen sheath 12 that secondary filter screen 13 is used is
9F, secondary filter screen 13 and secondary connecting portion 10 use superslide coating stainless steel, wherein, pair places a diameter of of seal wire 14
0.5~1mm, preferably 0.9652mm, i.e., 0.038 inch.When placing secondary filter screen 13, it is necessary to which foregoing 18F Arterial sheath 2 is matched somebody with somebody
Close.
The percutaneous puncture of Arterial sheath 2 is entered into femoral artery, sheath is constantly adjusted and drives in the wrong direction to the main filter screen 1 close to aorta ascendens
Place, the secondary part of filter screen 13 is sent into sheath and forms state as shown in Figure 4 afterwards, further releases pair simultaneously even as shown by arrows
Socket part 10, secondary filter screen sheath 12 and secondary placement seal wire 14.Secondary connecting portion 10 is tube-shaped structure, has magnetic, can automatic butt
Main connecting portion 3, turn clockwise secondary connecting portion 10 after docking, its helicitic texture between main connecting portion 3 is connected, such as Fig. 5
Shown in institute.
Secondary filter screen sheath 12 and secondary placement seal wire 14 are released simultaneously after, the through hole 8 of the main end of connecting portion 3 is may pass through, and support
Open and shrink network interface 7, expose the secondary front end of filter screen sheath 12, as shown in fig. 6, secondary filter screen sheath 12 exceeds main connecting portion 3 at least
1cm, it can effectively prevent thrombus, cancer embolus or the secondary of other tissue loss things when secondary filter screen 13 is opened from coming off.Further such as arrow
Secondary placement seal wire 14 is released shown in head, automatically opens up secondary filter screen 13.
After releasing secondary placement seal wire 14, secondary filter screen 13 automatically opens up, and the secondary length of filter screen 13 is 1cm, and maximum gauge is with main filter
Depending on the diameter of net 1, generally 2~4cm, preferably 3.5cm；The secondary length of connecting portion 10 is 4mm, and pair places a diameter of of seal wire 14
0.5~1mm, preferably 0.9652mm, i.e., 0.038 inch.As shown in fig. 7, overall exit secondary connecting portion 10, the secondary and of filter screen sheath 12
Pair places seal wire 14, can make the other structures recycled in its entirety in addition to Arterial sheath 2.
When arteries filter is integrally retracted into Arterial sheath 2, thrombus, cancer embolus or other tissue loss things are fixed on master
Together it is recovered between filter screen 1 and secondary filter screen 13, it is now overall to exit Arterial sheath 2, the complete of arteries filter can be completed
Recovery.
Claims (8)
1. a kind of recoverable arteries filter, it is characterised in that including main filter screen can diametrically compress or expansion
（1）, secondary filter screen（13）, main filter screen（1）Including supporting part（101）, obstruction portion（102）And main connecting portion（3）, wherein, support
Portion（101）, obstruction portion（102）For integral type structure, supporting part（101）One end it is penetrating, supporting part（101）With obstruction portion
（102）Inside connection；Described obstruction portion（102）End set have contraction network interface（7）, described main connecting portion（3）End
Face offers through hole（8）, shrink network interface（7）Positioned at through hole（8）Side；
Described secondary filter screen（13）It is umbrella-shaped structure in the deployed state, secondary filter screen（13）Installed in a secondary placement seal wire（14）
End；Secondary filter screen（13）During in compressive state, seal wire is placed in pair（14）Promotion under, secondary filter screen（13）It can sequentially pass through
Described through hole（8）, shrink network interface（7）The main filter screen entered under deployed condition（1）It is internal；In secondary filter screen（13）On set
Be equipped with for described main connecting portion（3）The secondary connecting portion of docking（10）.
2. recoverable arteries filter as claimed in claim 1, it is characterised in that described main filter screen（1）In pressure
During contracting state, positioned at an Arterial sheath（2）In, main filter screen（1）Circumference by Arterial sheath（2）The limitation of inwall and can not
Expansion；Described main connecting portion（3）On be provided with dismountable main placement seal wire（4）, work as Arterial sheath（2）Reach in sustainer
Afterwards, main placement seal wire is utilized（4）By main filter screen（1）From Arterial sheath（2）Front end is released, now main filter screen（1）Circumference lose
Limit and deploy, described supporting part（101）With sustainer inwall Elastic Contact.
3. recoverable arteries filter as claimed in claim 1, it is characterised in that described secondary filter screen（13）In pressure
During contracting state, positioned at a secondary filter screen sheath（12）In, described secondary connecting portion（10）It is sleeved on secondary filter screen sheath（12）Outside,
Secondary filter screen sheath（12）Can be relative to secondary connecting portion（10）Axial movement；Described main connecting portion（3）, secondary connecting portion（10）Docking
Afterwards, secondary filter screen sheath is promoted（12）, make secondary filter screen sheath（12）Front end pass through described through hole（8）Afterwards, described receipts are strutted
Contracting network interface（7）And enter main filter screen（1）Inside, recycle secondary placement seal wire（14）By secondary filter screen（13）From secondary filter screen sheath
（12）Front end is released, now secondary filter screen（13）Circumference lose limitation and in main filter screen（1）Inside expansion.
4. recoverable arteries filter as claimed in claim 2, it is characterised in that described main connecting portion（3）For circle
Tubular-shaped structures, main connecting portion（3）One end it is penetrating, the other end is provided with fixed plate（6）, described through hole（8）It is opened in fixation
Plate（6）On；Main connecting portion（3）Be internally provided with internal thread（5）, described main placement seal wire（4）Front end be provided with and institute
The internal thread stated（5）The first external screw thread coordinated.
5. recoverable arteries filter as claimed in claim 1, it is characterised in that described secondary connecting portion（10）With master
Connecting portion（3）Docked by the way of magnetic attracting：Described secondary connecting portion（10）Front end is magnetic texure, described master
Connecting portion（3）For metal structure.
6. recoverable arteries filter as claimed in claim 4, it is characterised in that described secondary connecting portion（10）Front end
It is provided with and described internal thread（5）The second external screw thread coordinated（11）.
7. recoverable arteries filter as claimed in claim 2, it is characterised in that described main placement seal wire（4）'s
A diameter of 4~5mm, main filter screen（1）Length after expansion vertically is 2~4cm.
8. recoverable arteries filter as claimed in claim 1, it is characterised in that described main filter screen（1）Support
Portion（101）, obstruction portion（102）Worked out by niti-shaped memorial alloy silk, main filter screen（1）Supporting part（101）, obstruction portion
（102）Funnel-shaped structure is collectively formed in the deployed state, wherein, supporting part（101）External diameter it is consistent, self-supporting portion（101）
To obstruction portion（102）The variation tendency of external diameter is：Reduction, increase reduce again, finally in obstruction portion（102）End formed it is described
Contraction network interface（7）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720013863.1U CN207168608U (en) | 2017-01-06 | 2017-01-06 | Recoverable arteries filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720013863.1U CN207168608U (en) | 2017-01-06 | 2017-01-06 | Recoverable arteries filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207168608U true CN207168608U (en) | 2018-04-03 |
Family
ID=61732978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720013863.1U Active CN207168608U (en) | 2017-01-06 | 2017-01-06 | Recoverable arteries filter |
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|---|---|
| CN (1) | CN207168608U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106667619A (en) * | 2017-01-06 | 2017-05-17 | 中国人民解放军第四军医大学 | Recoverable artery blood vessel filter |
| CN109009592A (en) * | 2018-06-19 | 2018-12-18 | 西安交通大学医学院第二附属医院 | Internal carotid integral type discharges umbrella protective cradle |
| CN110974481A (en) * | 2019-12-10 | 2020-04-10 | 先健科技(深圳)有限公司 | Filter and filter system |
-
2017
- 2017-01-06 CN CN201720013863.1U patent/CN207168608U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106667619A (en) * | 2017-01-06 | 2017-05-17 | 中国人民解放军第四军医大学 | Recoverable artery blood vessel filter |
| CN109009592A (en) * | 2018-06-19 | 2018-12-18 | 西安交通大学医学院第二附属医院 | Internal carotid integral type discharges umbrella protective cradle |
| CN109009592B (en) * | 2018-06-19 | 2021-06-25 | 西安交通大学医学院第二附属医院 | Internal carotid artery integrated release umbrella-shaped protective stent |
| CN110974481A (en) * | 2019-12-10 | 2020-04-10 | 先健科技(深圳)有限公司 | Filter and filter system |
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