CN209004326U - Thrombus protective device - Google Patents
Thrombus protective device Download PDFInfo
- Publication number
- CN209004326U CN209004326U CN201721320118.8U CN201721320118U CN209004326U CN 209004326 U CN209004326 U CN 209004326U CN 201721320118 U CN201721320118 U CN 201721320118U CN 209004326 U CN209004326 U CN 209004326U
- Authority
- CN
- China
- Prior art keywords
- main frame
- support portion
- protective device
- thrombus
- arm
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Surgical Instruments (AREA)
- Prostheses (AREA)
Abstract
A kind of thrombus protective device, is set to intravascular pre-position, for filtering thrombus.The thrombus protective device includes skeleton and strainer, and for the skeleton by the screen support in the endovascular pre-position, the strainer can filter thrombus.The skeleton includes main frame and the first support portion and the second support portion that are connected with the main frame, first support portion and second support portion extend to the different sides of the main frame, and the main frame, first support portion and second support portion are respectively used to fit on the inner wall at the blood vessel different location.The strainer is averagely 64 ± 3 through density range, and average weft density range is 37 ± 2.The pre-position of blood vessel can be steadily arranged in the thrombus protective device, can filter thrombus, and anti-tampon enters vitals, blood vessel embolism is effectively reduced and probability that is pathogenic or causing death.
Description
Technical field
The utility model relates to medical field more particularly to a kind of thrombus protective devices.
Background technique
With the extensive use of Endovascular interventional treatment worldwide, complication also increasingly shows.Such as in ball
In capsule dilatation, endarterium decollement, blood vessel rotary-cut art or stenter to implant surgical procedure, the patch of blood clot or calcification is broken
It is broken and fall off, and generate thrombus, as the direction of blood flow enters distal vessels, block the blood supply of important organ, such as brain,
Heart or other vitals.This embolism may cause cerebral infarction, myocardial infarction, pulmonary embolism etc., can lead when serious
It is lethal to die.
Utility model content
In view of this, it is necessary to provide the thrombus protective devices for preventing blood vessel embolism.
A kind of thrombus protective device, is set to intravascular pre-position, for filtering thrombus.The thrombus protection dress
It sets including skeleton and strainer, the skeleton is by the screen support in the endovascular pre-position, the strainer energy
Enough filter thrombus.The skeleton includes main frame and the first support portion and the second support portion that are connected with the main frame, institute
It states the first support portion and second support portion to extend to the different sides of the main frame, the main frame, described first
Support portion and second support portion are respectively used to fit on the inner wall at the blood vessel different location.The strainer is put down
It is 64 ± 3 through density range, average weft density range is 37 ± 2.
Further, the main frame includes first end and the second end opposite with the first end, the first end
And the second end is in that tapered manner extends, and forms the structure of tail portion tilting.
Further, the main frame is made of elongated metal wire or alloy wire.
Further, the main frame uses the nitinol alloy wire with shape memory function to bend；And/or
First support portion uses the nitinol alloy wire with shape memory function to bend；And/or
Second support portion uses the nitinol alloy wire with shape memory function to bend.
Further, first support portion includes foot and top, and one end of the foot is connected to the main frame
The top is supported in pre-position far from the main frame by frame, the other end, and the top can fit in the blood vessel
On the inner wall of pre-position.
Further, the quantity of the foot is two, and the bottom end of two foots is connected to the main frame
Two relative edges on, alternatively, the bottom end of the foot is connected on the same side of the main frame.
Further, the top is substantially domed, and the top is arranged relative to the end bend of the foot.
Further, first support portion is structure as a whole with the main frame；And/or
Second support portion is structure as a whole with the main frame.
Further, first support portion is entwined with the main frame using more fine filaments integrated spirals；And/
Or
Second support portion is entwined with the main frame using more fine filaments integrated spirals.
Further, the main frame is made of three fine filaments, first support portion and/or second support portion
It is bent by a wherein fine filaments extraction.
Further, second support portion includes the first arm and the second arm, first arm and second arm
The end that is connected on the main frame of one end be bent in opposite directions, first arm and second arm and the main frame
An open loop structure is surrounded jointly, and the angle between first arm and second arm is adjustable.
Further, one end of first arm and second arm is connected to two relative edges of the main frame
On, alternatively, one end of first arm and second arm is connected on the same side of the main frame.
Further, second support portion is integrally bent by the main frame, and bending forms a closed loop configuration.
Further, the wire range of the strainer is 25.4 μm ± 2.54 μm；And/or
The area of the mesh of the strainer is less than 0.2mm2；And/or s
The flatness of the strainer is not less than 70mm.
Further, the area of the mesh of the strainer is 250 μm 130 μm of X.
Further, the strainer is woven using the nitinol alloy wire of biocompatibility.
Compared with the existing technology, the pre-position of blood vessel can be steadily arranged in the thrombus protective device, can
Thrombus is filtered, anti-tampon enters vitals, blood vessel embolism is effectively reduced and probability that is pathogenic or causing death.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the thrombus protective device of one embodiment of the utility model.
Fig. 2 is the schematic diagram of the second support portion of another embodiment of the utility model.
Fig. 3 a is the schematic diagram of the second support portion of the another embodiment of the utility model.
Fig. 3 b is the schematic diagram of the second support portion of the another embodiment of the utility model.
Fig. 4 is the blood vessel schematic diagram at the arch of aorta.
Fig. 5 is placement schematic diagram of the thrombus protective device of one embodiment of the utility model at the arch of aorta of Fig. 4.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Based on the implementation in the utility model
Example, every other embodiment obtained by those of ordinary skill in the art without making creative efforts belong to
The range of the utility model protection.
Referring to Fig. 1, Fig. 1 shows that a kind of thrombus protective device 100 of one embodiment of the utility model, the thrombus are anti-
Protection unit 100 can be placed in arteries, prevent blood vessel embolism.The thrombus protective device 100 includes skeleton 10 and is set to
Strainer 20 on the skeleton 10.The skeleton 10 can support the strainer 20 and the strainer 20 can be stably placed on blood
The pre-position of pipe.
In embodiment illustrated, the skeleton 10 includes main frame 11, the first support portion 12 and the second support portion 13.
The main frame 11 can support, the strainer 20 is unfolded, and work orderly the strainer 20, first support portion 12
And second support portion 13 extends preset distance, first support portion 12 and described second from the main frame 11
Support portion 13 enables the main frame 11 that the strainer 20 is supported in the predetermined of blood vessel for positioning the main frame 11
At position.
Specifically, the main frame 11 be substantially be in ship shape frame comprising first end 111 and with the first end
111 opposite second ends 112.The first end 111 and the second end 112 extend in tapered manner, and form tail portion
The structure of tilting, more specifically, the tail portion of the first end 111 and the second end 112 is to the same of the main frame 11
Side tilts, and forms substantially ship shape structure above-mentioned.The shape of the main frame 11 is designed as preferably matching blood vessel and places thrombus
Shape at protective device, the design of main frame 11 described in embodiment illustrated is so that the thrombus protective device 100 is suitable
Conjunction is placed at the arch of aorta, will do specific introduction to the use of the thrombus protective device 100 in conjunction with attached drawing hereinafter.It can manage
Solution, the shape of the main frame 11 is not limited to the above, according to different use situation and use demand, the main frame
11 shape can suitably change.
The main frame 11 is made of elongated metal wire or alloy wire, and the main frame 11 has scheduled rigidity and tough
Degree, can support and the strainer 20 is unfolded, and can adapt to the shape at blood vessel and suitably deform.In present embodiment,
The main frame 11 is bent using nitinol alloy wire, can be under predetermined use environment with shape memory function
Restore and keep scheduled shape, to better adapt to the shape of the pre-position of blood vessel.
First support portion 12 is arranged close to the first end 111 of the main frame 11, and common with the main frame 11
Surround general toroidal structure.First support portion 12 includes foot 121 and top 122.One end of the foot 121 connects
In the main frame 11, the top 122 is supported in pre-position far from the main frame 11 by the other end.Present embodiment
In, the top 122 is substantially domed, and the quantity of the foot 121 is two, and the bottom end of two foots 121 connects respectively
It is connected on two relative edges of the main frame 11.The top 122 is arranged relative to the end bend of the foot 121, described
The shape at top 122 enables first support portion 12 to be supported in the predetermined position of blood vessel.In present embodiment, described
One support portion 12 is structure as a whole with the main frame 11, it will be understood that first support portion 12 can also be welded in described
It is connected on the main frame 11 on main frame 11 or with other suitable methods.
It is appreciated that the bottom end of two foots 121 also can connect on the same side of the main frame 11, as long as
Can be realized first support portion 12 stablizes support.
Second support portion 13 is substantially connected to the middle part of the main frame 11, and to the main frame 11 with it is described
The opposite side of first support portion 12 extends, and in other words, first support portion 12 is located at second support portion 13
The opposite two sides of the main frame 11.In embodiment illustrated, second support portion 13 includes the first arm 131 and second
One end of arm 132, first arm 131 and second arm 132 is connected to two relative edges of the main frame 11
On, the other end extends to the side opposite with first support portion 12.First arm 131 and second arm 132
End is bent in opposite directions, and first arm 131 surrounds an open loop structure with the main frame 11 with second arm 132 jointly.It opens
Ring structure design, so that when in use, the first arm 131 and the second arm 132 can be adjusted according to the shape of vascular wall, is tightly attached to
On vascular wall, stable support is formed.It is appreciated that in other embodiments, first arm 131 and second arm
132 may be integral structure, to surround closed loop configuration jointly with the main frame 11.
In present embodiment, second support portion 13 is structure as a whole with the main frame 11, it will be understood that described
Two support portions 13 can also be welded on the main frame 11 or are connected on the main frame 11 with other suitable methods.
It is appreciated that first arm 131 and second arm 132 also can connect it is same in the main frame 11
On side, supported as long as can be realized stablizing for second support portion 13.
In above-mentioned embodiment, the material and the main frame of first support portion 12 and second support portion 13
11 material is identical, is nitinol alloy wire, can restore under predetermined use environment and keep scheduled shape, with more preferable
Ground adapts to the shape of the pre-position of blood vessel.It is appreciated that the material of first support portion 12 and second support portion 13
Material can be made of the material different from the main frame 11, moreover, first support portion 12 and second support portion
13 material can also be different.
Referring to Fig. 2, showing the schematic diagram of the second support portion 13' of another embodiment of the utility model, this implementation
In mode, the second support portion 13' is integrally bent by main frame 11', and specifically, the main frame 11' is described
Certain length is reserved at the position of two support portion 13', the reserved part the main frame 11' is bent to form second support portion
13', in present embodiment, the second support portion 13' is substantially in oval ring-type.Second support portion of present embodiment
13' generally smooth ring-type avoids extra end node, therefore in use, can be to avoid rubbing or scratch
Blood vessel further ensures safety in utilization.
Fig. 3 a is please referred to, the schematic diagram of the second support portion 13 " of the another embodiment of the utility model is shown, relative to
Second embodiment, main frame 11 " and second support portion 13 " are formed using more fine filaments spiral windings, are compared
For main frame and the second support portion that individual thread is formed, the main frame 11 " and second support portion 13 " have more
Good support strength, is capable of providing better support force, while having better compliance, can more easy production shape and
It is convenient to use.
Fig. 3 b is please referred to, the schematic diagram of the second support portion 13 " ' of the another embodiment of the utility model is shown, it is described
Main frame 11 " ' be made of 3 fine filaments, one in 3 fine filaments is at the position of correspondence second support portion 13 " '
Extraction forms ring-type, and the fine filaments of extraction section reverse the arm to form second support portion 13 " ' of similar twisted shape, through turning round
Turn formed arm have round and smooth end, can avoid arm end and blood vessel against when, puncture vascular wall.It is appreciated that
Second support portion 13 " ' can have the first arm and the second arm, and first arm and the second arm are exploited with this mode structure
At.It is appreciated that aforementioned first support portion can also make forming by the way of similar Fig. 2 Fig. 3 a or Fig. 3 b, no
It repeats one by one again.
It is appreciated that the first support portion and the second support portion outer surface described in any of the above embodiment can with overlay film,
To increase smoothness, friction when being bonded with vascular wall is reduced.
It is appreciated that the outer surface of the first support portion and the second support portion described in any of the above embodiment can coat
There is medication coat, in use, medication coat can reduce or mitigate the inflammation of protective device and vascular wall contact site.
Referring again to Fig. 1, the strainer 20 is woven, between the silk thread 21 for filtering thrombus by silk thread 21
Form fine and closely woven mesh 22.In present embodiment, the wire range of the silk thread 21 is 25.4 μm ± 2.54 μm；The strainer
20 be averaged through density range is 64 ± 3, and average weft density range is 37 ± 2；The area of the mesh 22 is less than 0.2mm2, excellent
Selection of land, the area of the mesh 22 are 250 μm 130 μm of X, it should be noted that in actual use, the area of the mesh 22 will be closed
It is suitable, if too big, thrombus can not be effectively filtered, if too small, there are thrombus to block the strainer 20, influences branch vessel
The risk of blood supply proves that the mesh 22 of above-mentioned size can effectively filter thrombus, while can guarantee branch vessel by verifying
Blood supply, greatly improve the safety used.The flatness (Flat Width) of the strainer 20 is not less than 70mm.
In present embodiment, the strainer 20 is woven using the nitinol alloy wire of biocompatibility.It is appreciated that institute
Stating strainer 20 can also be worked out using the filament of other suitable materials.
The specific use situation and application method of the thrombus protective device will be illustrated below.
In present embodiment, the thrombus protective device 100 is suitble to be placed at the arch of aorta.Referring to Fig. 4, Fig. 4 is aobvious
The blood vessel schematic diagram at the arch of aorta is shown, which has aorta ascendens 201 and descending aorta 202, and the liter is actively
It is formed at the position that arteries and veins 201 is connected with the descending aorta 202 203 at an arch, 203 are connected with innominate artery at the arch
300, left common carotid artery 400 and left subclavian artery 500, the innominate artery 300 and the left subclavian artery 500 divide
Not Wei Yu the left common carotid artery 400 two sides.When carrying out intervention aortic valve replacement operation, since aorta petal is serious
Narrow calcification generally in advance expands protocalcium stenosed valve using sacculus, in the process, has the spot of part calcification
Block falls off in process of expansion, forms thrombus, and with blood flow, thrombus is always moved by the innominate artery 300, the left neck
Arteries and veins 40 and the left subclavian artery 500 enter brain, coronary artery, lower limb vascular, lead to blood vessel embolism, it is dead to eventually lead to patient
It dies or paralyses.
Using the thrombus protective device 100 of the utility model it is possible to prevente effectively from the above problem occurs.Referring to Fig. 5, making
Used time, as shown below, in use, the first end 111 of the main frame 11 is bonded 201 inner wall of aorta ascendens, described
Two proximal ends 112 are bonded 202 inner wall of descending aorta, and the main frame 11 is applied to the aorta 200 with suitable pressure
Without piercing through or destroying blood vessel on inner wall.First support portion 12 is located in the innominate artery blood vessel 300, specifically
Ground, the top 122 of first support portion 12 fit in the inner wall of the innominate artery 300.Second support portion 13 against
In the inner wall of the aorta 200, specifically, second support portion 13 extends to the aorta ascendens 20 and is resisted against it
On inner wall, according to the size of vascular wall, the angle opened between first arm 131 and second arm 132 can be carried out
Adjustment, stable support can be formed, and do not pierce through or destroy vascular wall with suitable power against the vascular wall of two sides.
It is placed in this way, the thrombus protective device 100 stablizing at the arch of aorta may be implemented, the blood can be effectively prevented
Bolt protective device 100 is impacted and be displaced by blood flow, guarantees that the thrombus protective device 100 normally functions.It is described
Strainer 20 is placed in the suitable position at the arch of aorta by the skeleton 10, to filter thrombus, prevents from being formed in surgical procedure
Thrombus enter the innominate artery 300, the left common carotid artery 400 and the left subclavian artery 500, and then avoid hand
The thrombus formed during art enters brain, coronary artery and lower limb vascular, considerably increases the safety and success rate of operation.
Obviously, it is practical without departing from this can to carry out various modification and variations to the utility model by those skilled in the art
Novel spirit and scope.If in this way, these modifications and variations of the present invention belong to the utility model claims and
Within the scope of its equivalent technologies, then the utility model is also intended to include these modifications and variations.
Claims (16)
1. a kind of thrombus protective device, is set to intravascular pre-position, for filtering thrombus, the thrombus protective device
Including skeleton and strainer, for the skeleton by the screen support in the endovascular pre-position, the strainer can
Filter thrombus, which is characterized in that the skeleton includes main frame and the first support portion and second for being connected with the main frame
Support portion, first support portion and second support portion extend to the different sides of the main frame, the main frame,
First support portion and second support portion are respectively used to fit on the inner wall at the blood vessel different location, described
Strainer is averagely 64 ± 3 through density range, and average weft density range is 37 ± 2.
2. thrombus protective device as described in claim 1, it is characterised in that: the main frame include first end and with it is described
The opposite second end of first end, the first end and the second end are in that tapered manner extends, and forms tail portion tilting
Structure.
3. thrombus protective device as described in claim 1, it is characterised in that: the main frame is elongated metal wire or alloy
Silk is made.
4. thrombus protective device as described in claim 1, it is characterised in that: the main frame, which uses, has shape memory function
Nitinol alloy wire bend；And/or
First support portion uses the nitinol alloy wire with shape memory function to bend；And/or
Second support portion uses the nitinol alloy wire with shape memory function to bend.
5. thrombus protective device as described in claim 1, it is characterised in that: first support portion includes foot and top
Portion, one end of the foot are connected to the main frame, and the top is supported in pre-determined bit far from the main frame by the other end
Place is set, the top can fit on the inner wall of the blood vessel pre-position.
6. thrombus protective device as claimed in claim 5, it is characterised in that: the quantity of the foot is two, described in two
The bottom end of foot is connected on two relative edges of the main frame, alternatively, the bottom end of the foot is connected to the main frame
On the same side of frame.
7. thrombus protective device as claimed in claim 5, it is characterised in that: the top is substantially domed, the top phase
End bend setting for the foot.
8. thrombus protective device as described in claim 1, it is characterised in that: first support portion is one with the main frame
Body structure；And/or
Second support portion is structure as a whole with the main frame.
9. thrombus protective device as described in claim 1, it is characterised in that: first support portion and the main frame use
More fine filaments integrated spirals are entwined；And/or
Second support portion is entwined with the main frame using more fine filaments integrated spirals.
10. thrombus protective device as described in claim 1, it is characterised in that: the main frame is made of three fine filaments, institute
The first support portion and/or second support portion is stated to be bent by a wherein fine filaments extraction.
11. thrombus protective device as described in claim 1, it is characterised in that: second support portion include the first arm and
The end that one end of second arm, first arm and second arm is connected on the main frame is bent in opposite directions, institute
It states the first arm and second arm and the main frame surrounds an open loop structure jointly, between first arm and second arm
Angle it is adjustable.
12. thrombus protective device as claimed in claim 11, it is characterised in that: the one of first arm and second arm
End is connected on two relative edges of the main frame, alternatively, one end of first arm and second arm connects respectively
It is connected on the same side of the main frame.
13. thrombus protective device as described in claim 1, it is characterised in that: second support portion is by the main frame one
Body is bent, and bending forms a closed loop configuration.
14. thrombus protective device as described in claim 1, it is characterised in that: the wire range of the strainer be 25.4 μm ±
2.54μm；And/or
The area of the mesh of the strainer is less than 0.2mm2；And/or
The flatness of the strainer is not less than 70mm.
15. thrombus protective device as described in claim 1, it is characterised in that: the area of the mesh of the strainer is 250 μm of X
130μm。
16. thrombus protective device as described in claim 1, it is characterised in that: the strainer uses the NiTi of biocompatibility
Alloy wire weaves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721320118.8U CN209004326U (en) | 2017-10-13 | 2017-10-13 | Thrombus protective device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721320118.8U CN209004326U (en) | 2017-10-13 | 2017-10-13 | Thrombus protective device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209004326U true CN209004326U (en) | 2019-06-21 |
Family
ID=66827129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721320118.8U Active CN209004326U (en) | 2017-10-13 | 2017-10-13 | Thrombus protective device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209004326U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114569284A (en) * | 2022-03-29 | 2022-06-03 | 上海以心医疗器械有限公司 | Brain protection device |
-
2017
- 2017-10-13 CN CN201721320118.8U patent/CN209004326U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114569284A (en) * | 2022-03-29 | 2022-06-03 | 上海以心医疗器械有限公司 | Brain protection device |
| CN114569284B (en) * | 2022-03-29 | 2024-03-15 | 上海以心医疗器械有限公司 | Brain protection device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6168622B1 (en) | Method and apparatus for occluding aneurysms | |
| EP2308425B2 (en) | Percutaneous Heart Valve Prosthesis | |
| EP0902704B1 (en) | Apparatus for occluding aneurysms and method of forming said apparatus | |
| JP5610542B2 (en) | Blade ball embolization device and delivery system | |
| US9615912B2 (en) | Intravascular implants and methods of using the same | |
| EP2021064B1 (en) | Vascular filter | |
| WO2017016411A1 (en) | Left auricle occluding device | |
| JP7144404B2 (en) | Systems and methods for embolic embolization of neural aneurysms | |
| JP2015509752A (en) | Expandable occlusive device and method of use | |
| JP2015528375A (en) | Medical equipment | |
| JP2008515468A (en) | Treatment for head aneurysm | |
| JP2004503327A (en) | Implantable braided device for stroke prevention and method of manufacturing the same | |
| CN105266934A (en) | Woven vascular stent | |
| CN209004326U (en) | Thrombus protective device | |
| CN111374810A (en) | Coated vascular stent with improved wall-adhering performance | |
| CN110613540A (en) | Blood vessel implantation stent | |
| CN108309505A (en) | Thrombus protective device | |
| CN107019581B (en) | Ascending aorta and aortic valve integrated intravascular stent | |
| WO2018121114A1 (en) | Filter for implanting into blood vessel | |
| CN209474866U (en) | The aorta ascendens overlay film frame discharged through apical approach | |
| CN110613538A (en) | Blood vessel support capable of positioning | |
| CA3051608C (en) | Filter device | |
| CN211156502U (en) | Blood vessel support capable of positioning | |
| CN110613539A (en) | Blood vessel support capable of positioning | |
| CN205569121U (en) | Woven left ventricle subtracts container tool |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |