CN106308974A - Filter - Google Patents
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- CN106308974A CN106308974A CN201510374776.4A CN201510374776A CN106308974A CN 106308974 A CN106308974 A CN 106308974A CN 201510374776 A CN201510374776 A CN 201510374776A CN 106308974 A CN106308974 A CN 106308974A
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- filter
- supporter
- main part
- junction point
- supporting
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Abstract
The invention provides a filter. The filter comprises a main body part and a plurality of support parts located on the outer side of the main body part, wherein the main body part is provided with a plurality of connecting points; each support part is connected with the main body part through one connecting point; each support part comprises a support body; and the support body is basically located in a plane formed by the connecting point connected with the support body and a longitudinal central axis of the main body part. By implementing the filter, the filter implanted in a human body can be conveniently taken out from the human body.
Description
Technical field
The present invention relates to a kind of implanted medical device, particularly relate to a kind of filter.
Background technology
Pulmonary infarction (PE) is a kind of common disease, has statistics, without the pulmonary infarction mortality rate for the treatment of is
20%-30%, annual new cases accounts for the 0.2% of population.China calculates with 13.5 hundred million populations, there are about every year
2700000 increase patient newly.
Vena cava filter (hereinafter referred to as filter) is proved to be the incidence rate that can reduce pulmonary infarction clinically.If
Permanent implantation filter, can bring following risk: filter contacts with blood and blood vessel endothelium for a long time, it may occur however that egg
White matter absorption, platelet adhesion, ultimately form thrombosis and cause vein blood vessel to block, or cause pulmonary infarction to occur again；
It is chronically implanted internal, has generation filter to deform, tilt, shift, rupture, even penetrate the danger etc. of blood vessel.
Therefore, recommend provisional filter clinically, insert in the acute stage that patient's deep venous thrombosis occurs, acute
After the phase, again filter is taken out when the risk of thrombus breaks loose reduces.
Vena cava filter mainly uses metal material such as 316L rustless steel, Nitinol etc. to make.Under inserting
After caval vein certain time, filter support bar can be climbed by endotheliocyte to some extent and be covered, wraps up, can during taking-up
Can arterial intima, can conveniently take out and the filter of not arterial intima actually must therefore it provides a kind of
Want.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of filter, to solve prior art filter in implantation
Time among blood vessel, it has not been convenient to the defect that filter takes out.
The present invention provides a kind of filter, including main part, and multiple be positioned at outside described main part first
Supporting part；Described main part has multiple junction point, and each described first supporting part passes through a described junction point
It is connected with described main part；Each described first supporting part includes first supporter, described first supporter
Vertical central axis generally within the described junction point being connected with described first supporter with described main part is formed
Plane in.
The present invention provides a kind of filter, including main part and multiple second be positioned at outside described main part
Support part；Described main part has multiple junction point；Each described second supporting part by described junction point with
Described main part is connected；Each described second supporting part includes at least two the second supporter, each described second
Supporting part there is at least two the second supporter be respectively arranged on the described junction point being connected with described second supporter
The plane both sides formed with the vertical central axis of described main part.
The present invention provides a kind of filter, including main part, and multiple be all positioned at outside described main part the
One supporting part and the second supporting part；Described main part has multiple junction point, and each described supporting part passes through one
Described junction point is connected with described main part；Each described first supporting part comprises first supporter, described
First supporter is generally within the longitudinal direction of the described junction point being connected with described first supporter Yu described main part
In the plane that central shaft is formed；Each described second supporting part comprises at least two the second supporter, each described
Second supporting part there is the second supporter described at least two be respectively arranged on the institute being connected with described second supporter
State the plane both sides of junction point and the vertical central axis formation of described main part.
In one embodiment, the proximal part of described filter or distal end are additionally provided with recovery body；Each described
Supporter all extends to the direction away from described recovery body and opens.
In one embodiment, described supporter includes a lead segment and one be connected with described boot segment
Radially supporting section；Described lead segment is outside along the direction away from described recovery body from coupled described junction point
Radiation, described radial direction supporting section is axially extending along the direction away from described recovery body.
In one embodiment, described radial direction supporting section is parallel to the central shaft of described main part.
In one embodiment, described supporter from described main part along away from the outside spoke in direction of described recovery body
Penetrate extension, and form angle with the central shaft of described main body.
In one embodiment, at least part of described supporter is additionally provided with stop away from described junction point one end
Part, described block piece is spherical structure；Or described block piece is away from described recovery body from described supporter
One end bend towards longitudinal center's direction of principal axis of described filter and extend the bending structure of formation；Or described resistance
Block piece includes described bending structure and is arranged at the described bending structure spherical junctions away from described supporter one end
Structure.
In one embodiment, described supporter the most described filter central shaft is apart from farthest position and described master
Radial height difference scope between body maximum outside diameter is 2mm 4mm.
In one embodiment, described main part also includes the company being connected between described proximal part and distal end
Junctor；Described connector includes the first filter screen, the second filter screen and for connecting described first filter screen and described
Multiple linkage sections of two filter screens；Described junction point is positioned at described first filter screen, described linkage section or described second
In at least one of filter screen.
In one embodiment, described junction point is arranged on described linkage section, the setting of the most described linkage section
There is being partially toward near described filter vertical central axis lopsidedness of described junction point.
In one embodiment, being provided with anchor thorn outside at least one described supporter, described anchor stings towards proximal part
Or distal end tilts.
Compared with prior art, the main part of filter of the present invention is provided with supporting part, when implanting the most internal,
Only supporting part contacts with each other with blood vessel, has completely cut off main part and has contacted with the direct of blood vessel wall, therefore will filter
When device takes out, it is only necessary to supporting part is separated with blood vessel, it is possible to convenient by filter taking-up.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 a-Fig. 1 b is the overall structure schematic diagram of the filter of the first embodiment of the present invention, shown filter bag
Including a main part and multiple supporting part, each supporting part includes a supporter；
Fig. 2 is A portion enlarged drawing in Fig. 1；
Fig. 3 a-Fig. 3 b is the overall structure schematic diagram of main part in Fig. 1；
Fig. 4 a-Fig. 4 b is the structural representation that each supporting part all includes the filter of two supporters；
Fig. 5 is to include a supporter on part supporting part, and part supporting part includes the filter of two supporters
The structural representation of device；
Fig. 6 is the part connection end structure towards the direction inclination of filter vertical central axis of main part in Fig. 1
Schematic diagram；
Fig. 7 to Figure 10 is supporting part distressed structure schematic diagram of installation site on main part in Fig. 1；
Figure 11 is the overall structure schematic diagram that the supporter end of filter in FIG is provided with chondritic；
Figure 12 is the overall structure signal that the part supporter end of filter in FIG is provided with bending structure
Figure；
Figure 13 be the end of part bending structure in fig. 12 be provided with chondritic, simultaneously do not set curved
The end of the supporter of folded structure arranges the overall structure schematic diagram of chondritic；
Figure 14 is the structural representation being respectively provided with anchor thorn in Fig. 1 on all supporting parts；
Figure 15 is the structural representation being all not provided with anchor thorn in Fig. 1 on supporting part；
Figure 16 is the overall structure schematic diagram of the filter of second embodiment of the invention；
Figure 17 is the overall structure schematic diagram of the filter of third embodiment of the invention；
Figure 18 is the overall structure schematic diagram of the filter of fourth embodiment of the invention.
Detailed description of the invention
In order to be more clearly understood from the technical characteristic of the present invention, purpose and effect, now comparison accompanying drawing is detailed
Describe filter of the bright present invention and preparation method thereof in detail.
It should be noted that when element is referred to as " being fixed on " or " being arranged at " another element, this element can
To be directly connected between on another element, it is also possible to be indirectly connected to by one or more connecting element
On another element.When an element is known as " being connected to " another element, and it can be to be directly connected
On another element, or it is connected on another element by one or more connecting element.
In filter field, one end that after being implanted by filter, relative heart is nearer is referred to as proximal part, the relative heart
Dirty one end farther out is referred to as distal end.
As shown in Fig. 1 a, 1b and Fig. 2, the filter 100 that first embodiment of the invention provides, it is used for implanting
With the thrombosis in capture tube chamber to body lumen, it includes a main part 1, and multiple supporting part 2.
Described main part 1 includes multiple junction point 10；Each described supporting part 2 may be contained within described main part 1
Outside, and be connected with described main part 1 by a junction point 10.
After being implanted in body lumen by the filter 100 with supporting part 2, supporting part 2 is directly and tube chamber
Contact internal walls, and main part 1 separates with lumen wall so that when taking out filter 100, it is only necessary to will support
Portion 2 separates with wall of the lumen；Simultaneously less with wall of the lumen contact surface because of supporting part 2, therefore take out filter 100
Time more convenient, on tube chamber impact little.
Seeing also Fig. 3 a and 3b, main part 1 includes proximal part 11, distal end 12, and arranges
Connector 13 between proximal part 11 and distal end 12；Connector 13 include first filter screen 131,
One the second filter screen 133, and multiple linkage section 132.Multiple linkage sections 132 are along the circumference side of connector 13
To waiting point setting；First filter screen 131 is to away from the plurality of linkage section 132 from multiple linkage section 132 one end
Direction extend and converge the network structure of described proximal part 11, the second filter screen 133 is from multiple linkage sections 132
The other end extends to the direction away from the plurality of linkage section 132 and converges to the netted knot of described distal end 12
Structure.
Concrete, the first filter screen 131 is by point Y arranged such as one group of circumferencial directions along connector 13
Shape bar 1311 is constituted, and the quantity of the first Y shape bar 1311 is consistent with the quantity of linkage section 132, an every Y
Shape bar 1311 all includes what one first master section 1312 and the one end by described first main section 1312 separated
Two first son fields 1313.First main section 1312 is connected to proximal part 11 and two second son fields 1313
Between, and two the second adjacent son fields 1313 of two adjacent first Y shape bars 1311 are away from proximal part
The end of 11 converges on a linkage section 132.It should be noted that described first main section 1312 is close
The part of described proximal part 11 is the root of described first Y shape bar 1311；Described first Y shape bar 1311
Every first son field 1313 is away from the branch that end is described first Y shape bar 1311 of described proximal part 11
End.
Second filter screen 133 is by point the second Y shape bars 1331 arranged such as one group of circumferencial directions along connector 13
Constitute, the half that quantity is linkage section 132 quantity of the second Y shape bar 1331.Every second Y shape bar 1331
All include that one second master section 1332 and the one end by described second main section 1332 separate two second point
Prop up section 1333.Described second main section 1332 is connected to described distal end 12 and two second son fields 1333
Between, and every second son field 1333 of the second Y shape bar 1331 is connected on a linkage section 132.Need
It is noted that described second main section 1332 is described second Y shape bar near the part of described distal end 12
The root of 1331；Every second son field 1333 of described second Y shape bar 1331 is away from described distal end 12
The branch end that end is described second Y shape bar 1331.
As can seen above, the main part 1 of filter 100 on the whole in unsymmetric structure, the first Y shape bar 1311
Quantity be the twice of the second Y shape bar 1331 quantity, the density of the body of rod of the i.e. first filter screen 131 is more than second
The density of filter screen 133 body of rod.
It should be noted that connector 13 is made up of the material such as Nitinol with shape memory function,
Filter 100 is being delivered to inside of human body tube chamber and after release from the conveying pipe sheath of carrier, deformation can recovered
To deployed condition.During carrying out thrombosis filtration, blood flow flows to proximal part 11 from distal end 12, blood
First bolt passes through from the space that the second Y shape bar 1331 that body of rod density is less is formed, and enters into filter 100
Inside, stops to be retained in filter 100 via the first Y shape bar 1311 that body of rod density is bigger internal afterwards,
Thus realize the filtration to thrombosis.Distal end 12 is provided with recovery body 112, for example, hooks body or spiral shell
Stricture of vagina structure, takes out for the filter 100 after carrying out thrombosis filtration.
Referring to shown in Fig. 1 a, Fig. 1 b and Fig. 2, each described supporting part 2 all includes one
Support body 21, each supporter 21 is all connected with main part 1 by a junction point 10, each junction point 10
It is respectively formed a plane with the vertical central axis of described main part 1；Each described supporter 21 all generally within
In the plane that the described junction point 10 being connected with it and the vertical central axis of described main part 1 are formed.Each institute
State supporter 21 all generally within the vertical central axis of the described junction point 10 being connected with it with described main part 1
Refer in the plane formed: each described supporter 21 is all substantially located at described junction point 10 and described main body
In the plane that the vertical central axis in portion 1 is formed, it is allowed to there is deviation slightly.It is understood that refer to figure
Shown in 4a and Fig. 4 b, in the filter 100 ' shown in other embodiments, each supporting part 2 ' can also include
Multiple supporters 21 '；Multiple supporters 21 ' are connected with a junction point 10 ', have at least in multiple supporters 21 '
It is flat that two supporters 21 ' are divided into that the vertical central axis of junction point 10 ' and the main part 1 ' being connected with it formed
Both sides, face.
It can also be appreciated that as it is shown in figure 5, at other filter 100 " in, supporting part includes first
Support part 2 " and the second supporting part 2a ", each first supporting part 2 " it is provided with first supporter 21 ", often
Individual second supporting part 2a " it is provided with at least two the second supporter 21a ".Concrete, with filter 100 substantially
Identical, the first supporter 21 " generally within this first supporter 21 " junction point 10 that is connected " and with filter 100 "
In the plane that vertical central axis is formed；, second supporter 21a identical with filter 100 ' " at least two divide
Be located at and this second supporter 21a " junction point 10 that is connected " with filter 100 " plane that formed of vertical central axis
Both sides.
It should be noted that by the supporter 21 (first by supporting part 2 (the first supporting part 2 ")
Supporter 21 ") basic setup is in the plane that corresponding junction point and vertical central axis are formed, or by multiple
At least two of support body 21 ' (the second supporter 21 ") is divided into what corresponding junction point and vertical central axis were formed
Plane both sides, then by time in filter 100 (100 ', 100 ") overall shrinkage to sheath pipe, between each supporter
(include supporter (21 (21 '), the first supporter 21 ", the second supporter 21a ") or each
Support body (include supporter 21 (21 '), the first supporter 21 ", the second supporter 21a ") and connector 13
Situation about intersecting can't occur between (13 ', 13 "), it is to avoid each supporter (includes supporter 21
(21 '), the first supporter 21 ", the second supporter 21a ") and connector 13 (13 ', 13 ") between mutually
The situation that the filter 100 that intersects and bring (100 ', 100 ") can not discharge after implanting to tube chamber completely.Separately
Outward, when taking out filter 100 (100 ', 100 ") can also by direct to distal end pull filter 100 (100 ',
100 " mode), it is possible to filter 100 (100 ', 100 ") is taken out, without by rotating again towards far
Heart end pulls or adopts and taken out by filter 100 (100 ', 100 ") in other ways, easy to operate.
It should be noted that in the present embodiment, when filter 100 is implanted in tube chamber, due to wall of the lumen
Have a radially inner pressure effect to supporter 21, now supporter 21 may be recessed to wall of the lumen
In, in order to make connector 13 preferably separate with wall of the lumen, relative filter 100 vertical central axis of supporter 21
Radial height difference between distance highest distance position and described main part 1 maximum outside diameter is 2mm 4mm, preferably
Select 3mm.
It is understood that in the present embodiment, each supporter 21 relative filter 100 longitudinal center wheelbase
Radial height difference between the connected point 10 of highest distance position is different, such as, and supporter 21
Filter 100 vertical central axis radial direction between highest distance position and described main part 1 maximum outside diameter relatively is high
It is poor to spend, between the supporter 21 relative filter 100 vertical central axis distance connected point 10 of highest distance position
Radial height poor.
In filter 100 1 the most as shown in Figure 6, linkage section 132 1 includes first paragraph 1321 and second
Section 1322, first paragraph 1321 is substantially parallel with filter 100 1 vertical central axis, and is arranged at linkage section 132 1
Side near proximal part 11 1；Second segment 1322 is connected with each other with first paragraph 1321, and second segment 1322
Away from one end of first paragraph 1321 towards the lopsidedness at filter 100 1 vertical central axis place, the most at least
Part supporter 21 1 is arranged on the second end 1322.Second segment 1322 is near one end phase of distal end 12 1
Radial height difference scope to first paragraph 1321 is 1mm 3mm, preferably selects 2mm.It is understood that
Linkage section 132 1 can in brace shape, its near the side of distal end 12 1 towards filter 100 1 longitudinal center
The direction of axle tilts, thus drives linkage section 132 1 entirety to incline towards the direction of filter 100 1 vertical central axis
Tiltedly.
By by least part of linkage section 132 1 towards the lopsidedness at filter 100 1 vertical central axis place,
Then can increase in supporter 21 1 relative filter 100 1 longitudinal direction being arranged on linkage section 132 1 sloping portion
Difference in height between mandrel distance highest distance position and this supporter 132 1 junction point 10 1, such that it is able to inciting somebody to action
After filter 100 1 is implanted in blood vessel, prevents endothelium from climbing and be layed onto junction point 10 1 position, affect filter and reclaim
Effect.
Please continue to refer to shown in Fig. 2, each described supporter 21 all includes a lead segment 211 and one
Radially supporting section 212；Described lead segment 211 from coupled described junction point 10 along away from recovery body 112
The direction of one end (towards proximal part 11) to external radiation, described radial direction supporting section 212 and described lead segment
211 are connected and axially extending, preferably radially along the direction away from recovery body 112 one end (towards proximal part 11)
Supporting section is parallel to the central shaft of described main part, i.e. supporter 21 proximal part 11 one end towards filter 100
It is open,.Radially supporting section 212 is the most linear with linkage section 132, and is parallel to each other.By arranging opening
Supporter 21, when extracting filter 100 along distal end 12 out from human body, due to the nearly heart of supporter 21
The one end holding 11 places does not have resistance, therefore can easily take out by external force.
There is no particular limitation in the position of supporter 21, in the present embodiment, a connector 13 is provided with
Two supporting parts 2, each supporting part 2 includes a supporter 21, and two supporters 21 are arranged at connection
The opposite end of section 132.It is understood that the junction point 10 that supporting part 2 is connected with main part 1 can set
It is placed at least one of the first filter screen 131 of main part 1, linkage section 132 or the second filter screen 133, even
There is no particular limitation for the quantity of contact 10, illustrates below as a example by two junction points 10.
In filter 100 2 as shown in Figure 7, a junction point 10 2 is arranged at the centre of linkage section 132 2
Position, another junction point 10 2 is arranged at linkage section 132 2 one end near distal end 12 2；Such as Fig. 8
In shown filter 100 3, a junction point 10 3 is arranged at the centre position of linkage section 132 3, another
Junction point 10 3 is arranged at linkage section 132 3 one end near proximal part 11 3；Filter 100 4 as shown in Figure 9
In, a junction point 10 4 is arranged on linkage section 132 4 (can be that end can also be for centre position),
Another one junction point 10 4 is arranged on the first filter screen 131 4；In filter 100 5 as shown in Figure 10,
One junction point 10 5 is arranged on linkage section 132 5 (can be centre position can also be end), additionally
One junction point 10 5 is arranged on the second filter screen 133 5.It is understood that the setting of junction point position
Can also be alternate manner, be not specifically limited herein.
Meanwhile, it should be noted that the free end end of supporter 21 smooths, to prevent supporter 21
Free end penetrates on blood vessel.It is understandable that the free end end of supporter 21 can also arrange resistance
Block piece.
Filter 100 6 as shown in figure 11, the end, one end away from recovery body of at least part of supporter 21 6
Being provided with spherical structure 214 6, this spherical structure 214 6 is by by one end away from recovery body of supporter 21
Formed through argon arc welding hot melt, wherein, the diameter of spherical structure 214 6 is not particularly limited.
Filter 100 7 as shown in figure 12, at least part of supporter 21 7 away from recovery body one end towards
Filter 100 7 vertical central axis bends and extends formation bending structure 215 7, it is therefore prevented that propping up of filter 100 7
Support body 21 7 penetrates in blood vessel, it is to be understood that the length of the bending of bending structure 215 7 does not has
There is particularly restriction.
Filter 100 8 as shown in fig. 13 that, at least part of supporter 21 8 away from recovery body one end towards
While filter 100 8 vertical central axis is bent to form bending structure 215 8, also remote at bending structure 215 8
From the end of supporter 21 8, spherical structure 214 8 is set.Supporter 21 8 is prevented to penetrate into blood further
In inside pipe wall.
Continuing with seeing Fig. 2, being provided with anchor thorn 213 outside at least one supporter 21, anchor thorn 213 may select
Property be arranged at lead segment 211 or radially on supporting section 212, described anchor thorn 213 is towards proximal part 11
Tilt.It should be noted that when anchor thorn 213 be arranged at lead segment 211 time, should with filter 100 implant to
After in tube chamber, anchor thorn 213 needs to penetrate in wall of the lumen tissue, and the free end of supporting section 212 does not play
Thrust lumen wall tissue to fix the effect of filter 100.It is understood that on multiple supporters 21
Anchor thorn 213 can tilt to tilt simultaneously towards distal end 12 simultaneously towards proximal part 11, or can
Anchor thorn 213 on selective part supporter 21 tilts towards proximal part, additionally on part supporter 21
Anchor thorn 213 tilts towards distal end 12.When filter 100 is placed in the tube chamber of human body, anchor thorn 213 thrusts
In the tissue of lumen wall, it is achieved filter 100 fixing in tube chamber.Owing to anchor thorn 213 is disposed on propping up
Outside support body 21, the degree of depth that anchor thorn 213 is inserted in wall of the lumen is only limited with the length of anchor thorn 213, because of
This can't have relatively macrolesion to wall of the lumen.
It is understood that anchor thorn 213 be optionally arranged at simultaneously in multiple supporter 21 or
On person is multiple；Or do not arrange anchor thorn 213 on supporter 21, but by supporter 21 to wall of the lumen
Support force realize the fixing of filter 100 and wall of the lumen.Arrange on connector 13 9 as Figure 14 illustrates
The overall structure schematic diagram of the filter 100 9 of anchor thorn 213 9 it is respectively provided with on each supporter 21 9；Figure 15 table
Show the overall knot of the filter 100 10 being all not provided with anchor thorn on the supporter 21 10 that connector 13 10 is arranged
Structure schematic diagram.
It should be noted that anchor thorn 213 the same with connector 13 be also by the material with shape memory function
As Nitinol is made, filter 100 is being delivered to inside of human body tube chamber and is releasing from the conveying pipe sheath of carrier
After putting, deformation can be recovered to deployed condition.
There is no particular limitation for the connected mode of the various piece of filter 100.In the present embodiment, described support
Body 21 with described main part 1, described supporter 21 with described anchor thorn 213 is all by the way of cut
Integrated.It is understood that supporter 21, main part 1 and anchor thorn 213 are chosen as the most only
Vertical part, two separate parts are connected by the way of welding.
Second embodiment:
As shown in figure 16, the filter 100a, this filter 100a and first of the second embodiment that the present invention provides
The filter 100 of embodiment is substantially the same, and it includes a main part 1a, and at least one supporter 21a.
Main part 1a includes proximal part 11a, distal end 12a, and is arranged at proximal part 11a and distal end 12a
Between connector 13a.Described main part 1a is provided with recovery body 112a, for by described recovery body 112a
The filter 100a being implanted in tube chamber is reclaimed.Each supporter 21a may be contained within described main part 1a
Outside, and each described supporter 21a one end is connected with the connector 13a of main part 1a, other end shape
Become a free end along the one end open away from recovery body 112a of main part 1a.
Difference is, recovery body 112a is arranged at proximal part 11a, for reclaiming filter from proximal part
100a.Now, each supporter 21a is directed towards the distal end of described filter 100a and extends and open.
3rd embodiment
As shown in figure 17, the filter 100b, this filter 100b and first of the 3rd embodiment that the present invention provides
The filter 100 of embodiment is substantially the same, and it includes a main part 1b, and multiple supporter 21b；Main body
Portion 1b includes proximal part 11b, distal end 12b, and to be arranged at proximal part 11b and distal end 12b
Between connector 13b；Each supporter 21b is placed in the outside of described main part 1b.Each described
Support body 21b one end is connected with the connector 13b of main part 1b, and the other end forms a free end towards main part 1b
Proximal part 11b open.On supporter 21b, the optional anchor that is provided with stings 213b.Each supporter 21b is away from returning
The end of acceptor is optional is provided with block piece, i.e. spherical structure 214b or bending structure (not shown), or
Person spherical structure 214b and the combination of bending structure.
Difference is, each supporter 21b itself not in bending, described supporter 21b be from
The radial brace formed that stretches out of described connector 13b, it is formed with the vertical central axis of main part 1b
Certain angle.Meanwhile, when being provided with anchor thorn 213b on supporter 21b, owing to supporter 21b is brace
Shape, therefore anchor thorn 213b is not entered with the lead segment 211 in first embodiment and radial direction supporting section 212
Differentiation on line position.
4th embodiment
As shown in figure 18, the filter 100c, this filter 100c of the 4th embodiment provided for the present invention and the
The filter 100b of three embodiments is substantially the same, and it includes a main part 1c, and multiple supporter 21c.
Main part 1c includes proximal part 11c, distal end 12c, and is arranged at proximal part 11c and distal end 12c
Between connector 13c.Described main part 1c is provided with recovery body 112c, for by described recovery body 112c
The filter 100c being implanted in tube chamber is reclaimed.Each described supporter 21c is placed in described main part 1c
Outside.Each described supporter 21c from described connector 13c along away from the side of described recovery body 112c
Radial extension, forms brace shape.
Difference is, recovery body 112c is arranged at proximal part 11c, for reclaiming from proximal part 11c
Filter.Now, each supporter 21c extends towards the distal end 12c of described filter 100c and opens.
It is understood that in above-mentioned six embodiments, the shape of supporter can also be bending or
It is other shape, as long as it is permissible to be capable of the mode only by pulling filter from distal end (or proximal part)
Take out filter；When filter carries in delivery sheath simultaneously, between supporter and connector, multiple supports
Will not intersect between body.Additionally, the body of rod density of the first filter screen can be equal to the body of rod density of the second filter screen,
Or the first filter screen and the second filter screen structure are full symmetric.
In sum, the main part of the filter of the present invention is provided with supporting part, when implanting the most internal, only
Contact with each other between supporting part and lumen wall, completely cut off main part and contacted with the direct of wall of the lumen, therefore incited somebody to action
When filter takes out, it is only necessary to separated with lumen wall by supporting part, take out filter convenient；The present invention simultaneously
The free end of middle supporter is towards the one end open of filter, and when taking out filter, supporter free end resistance is less,
Therefore filter is taken out more convenient；Further, since at least one supporter is divided in corresponding junction point and longitudinal direction
The both sides of the described plane that mandrel is formed or basic setup, can be only along filters in corresponding described plane
Filter is taken out in the direction axially twitched, easy to operate.
Above in conjunction with accompanying drawing, embodiments of the invention are described, but the invention is not limited in above-mentioned
Detailed description of the invention, above-mentioned detailed description of the invention is only schematic rather than restrictive, ability
The those of ordinary skill in territory is under the enlightenment of the present invention, without departing from present inventive concept and claimed
Under ambit, it may also be made that a lot of form, within these belong to the protection of the present invention.
Claims (12)
1. a filter, it is characterised in that include main part, and multiple be positioned at outside described main part
The first supporting part；Described main part has multiple junction point, and each described first supporting part is by described in one
Junction point is connected with described main part；
Each described first supporting part includes first supporter, described first supporter generally within and institute
State in the plane of vertical central axis formation of the connected described junction point of the first supporter and described main part.
2. a filter, it is characterised in that include main part and multiple be positioned at outside described main part
Two supporting parts；Described main part has multiple junction point；Each described second supporting part passes through a described connection
Point is connected with described main part；
Each described second supporting part includes at least two the second supporter, has in each described second supporting part
At least two the second supporter is respectively arranged on the described junction point and described main body being connected with described second supporter
The plane both sides that the vertical central axis in portion is formed.
3. a filter, it is characterised in that include main part, and multiple be all positioned at outside described main part
First supporting part of side and the second supporting part；Described main part has multiple junction point, and each described supporting part leads to
Cross a described junction point to be connected with described main part；
Each described first supporting part comprises first supporter, described first supporter generally within and institute
State in the plane of vertical central axis formation of the connected described junction point of the first supporter and described main part；
Each described second supporting part comprises at least two the second supporter, has in each described second supporting part
Second supporter described at least two is respectively arranged on the described junction point being connected with described second supporter with described
The plane both sides that the vertical central axis of main part is formed.
4. according to the filter described in any one of claims 1 to 3, it is characterised in that the nearly heart of described filter
It is additionally provided with recovery body on end or distal end；Each described supporter all extends to the direction away from described recovery body
And it is open.
Filter the most according to claim 4, it is characterised in that described supporter includes a lead segment
And a radial direction supporting section being connected with described boot segment；Described lead segment is from coupled described junction point
Along the direction away from described recovery body to external radiation, described radial direction supporting section is along the axis of orientation away from described recovery body
To extension.
Filter the most according to claim 5, it is characterised in that described radial direction supporting section is parallel to described
The central shaft of main part.
Filter the most according to claim 4, it is characterised in that described supporter is from described main part edge
Direction away from described recovery body extends to external radiation, and forms angle with the central shaft of described main body.
Filter the most according to claim 4, it is characterised in that at least part of described supporter is away from institute
State and be additionally provided with block piece on junction point one end,
Described block piece is spherical structure；Or described block piece is away from described recovery from described supporter
One end of body bends towards longitudinal center's direction of principal axis of described filter and extends the bending structure of formation；Or it is described
Block piece includes described bending structure and is arranged at spherical away from described supporter one end of described bending structure
Structure.
Filter the most according to claim 4, it is characterised in that in the most described filter of described supporter
The mandrel poor scope of radial height between farthest position with described main part maximum outside diameter is
2mm‐4mm。
Filter the most according to claim 4, it is characterised in that described main part also includes being connected to
Connector between described proximal part and distal end；
Described connector includes the first filter screen, the second filter screen and for connecting described first filter screen and described
Multiple linkage sections of two filter screens；Described junction point is positioned at described first filter screen, described linkage section or described second
In at least one of filter screen.
11. filters according to claim 10, it is characterised in that described junction point is arranged at described company
In the section of connecing, the most described linkage section be provided with described junction point be partially toward near described filter longitudinal center
Axle lopsidedness.
12. filters according to claim 4, it is characterised in that outside at least one described supporter
Being provided with anchor thorn, described anchor thorn tilts towards proximal part or distal end.
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| CN201510374776.4A CN106308974B (en) | 2015-06-30 | 2015-06-30 | Filter |
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| CN201510374776.4A CN106308974B (en) | 2015-06-30 | 2015-06-30 | Filter |
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| CN106308974B CN106308974B (en) | 2018-08-03 |
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| CN201510374776.4A Active CN106308974B (en) | 2015-06-30 | 2015-06-30 | Filter |
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Cited By (12)
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| CN106901869A (en) * | 2017-03-31 | 2017-06-30 | 浙江归创医疗器械有限公司 | Venous filter |
| CN107280807A (en) * | 2017-06-28 | 2017-10-24 | 上海宏普医疗器械有限公司 | A kind of semiclosed dual-gripper recoverable version vena cava filter |
| WO2018082378A1 (en) * | 2016-11-02 | 2018-05-11 | 先健科技(深圳)有限公司 | Filter |
| WO2018099147A1 (en) * | 2016-12-01 | 2018-06-07 | 先健科技(深圳)有限公司 | Filter |
| WO2018103375A1 (en) * | 2016-12-06 | 2018-06-14 | 先健科技(深圳)有限公司 | Filter |
| CN108272531A (en) * | 2017-03-06 | 2018-07-13 | 上海宏普医疗器械有限公司 | A kind of ultrashort type bilayer vena cava filter |
| CN108283531A (en) * | 2017-03-07 | 2018-07-17 | 上海宏普医疗器械有限公司 | A kind of coated retrievable vena cava filter |
| CN109953839A (en) * | 2017-12-26 | 2019-07-02 | 先健科技(深圳)有限公司 | Filter |
| CN109953838A (en) * | 2017-12-26 | 2019-07-02 | 先健科技(深圳)有限公司 | Filter |
| WO2019128652A1 (en) * | 2017-12-26 | 2019-07-04 | 先健科技(深圳)有限公司 | Filter |
| WO2020062330A1 (en) * | 2018-09-26 | 2020-04-02 | 李雷 | Inferior vena cava embolism filter |
| WO2021227611A1 (en) * | 2020-05-11 | 2021-11-18 | 上海蓝脉医疗科技有限公司 | Filter |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2018082378A1 (en) * | 2016-11-02 | 2018-05-11 | 先健科技(深圳)有限公司 | Filter |
| WO2018099147A1 (en) * | 2016-12-01 | 2018-06-07 | 先健科技(深圳)有限公司 | Filter |
| US11166805B2 (en) | 2016-12-06 | 2021-11-09 | Lifetech Scientific (Shenzhen) Co. Ltd. | Filter |
| WO2018103375A1 (en) * | 2016-12-06 | 2018-06-14 | 先健科技(深圳)有限公司 | Filter |
| CN108272531A (en) * | 2017-03-06 | 2018-07-13 | 上海宏普医疗器械有限公司 | A kind of ultrashort type bilayer vena cava filter |
| CN108283531A (en) * | 2017-03-07 | 2018-07-17 | 上海宏普医疗器械有限公司 | A kind of coated retrievable vena cava filter |
| CN106901869A (en) * | 2017-03-31 | 2017-06-30 | 浙江归创医疗器械有限公司 | Venous filter |
| CN106901869B (en) * | 2017-03-31 | 2018-07-27 | 浙江归创医疗器械有限公司 | Venous filter |
| CN107280807A (en) * | 2017-06-28 | 2017-10-24 | 上海宏普医疗器械有限公司 | A kind of semiclosed dual-gripper recoverable version vena cava filter |
| CN109953839A (en) * | 2017-12-26 | 2019-07-02 | 先健科技(深圳)有限公司 | Filter |
| CN109953838A (en) * | 2017-12-26 | 2019-07-02 | 先健科技(深圳)有限公司 | Filter |
| WO2019128652A1 (en) * | 2017-12-26 | 2019-07-04 | 先健科技(深圳)有限公司 | Filter |
| WO2020062330A1 (en) * | 2018-09-26 | 2020-04-02 | 李雷 | Inferior vena cava embolism filter |
| WO2021227611A1 (en) * | 2020-05-11 | 2021-11-18 | 上海蓝脉医疗科技有限公司 | Filter |
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| CN106308974B (en) | 2018-08-03 |
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