CN106308974B - Filter - Google Patents
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- CN106308974B CN106308974B CN201510374776.4A CN201510374776A CN106308974B CN 106308974 B CN106308974 B CN 106308974B CN 201510374776 A CN201510374776 A CN 201510374776A CN 106308974 B CN106308974 B CN 106308974B
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- supporter
- main part
- filter
- strainer
- tie point
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Abstract
The present invention provides a kind of filter, including main part and multiple support portions on the outside of the main part；There are the main part multiple tie points, each support portion to be connected with the main part by a tie point；Each support portion includes a supporter, and the supporter is generally in the plane of the vertical central axis formation of the tie point and the main part that are connected with the supporter.The filter for implementing the present invention can facilitate and take out the filter being implanted into human body from human body.
Description
Technical field
The present invention relates to a kind of implanted medical device more particularly to a kind of filters.
Background technology
Pulmonary embolism (PE) is a kind of common disease, and it is 20%- to have statistics, the untreated pulmonary embolism death rate
30%, annual new cases account for about the 0.2% of population.China is calculated with 13.5 hundred million populations, and there are about 2,700,000 newly-increased patients every year.
Vena cava filter (hereinafter referred to as filter) is clinically proved to be the incidence that can reduce pulmonary embolism.If permanent plant
Enter filter, following risk can be brought：Filter is contacted with blood and blood vessel endothelium for a long time, it may occur however that protein absorption, blood platelet
Adherency, ultimately forming thrombus causes vein blood vessel to block, or pulmonary embolism is caused to occur again；It is chronically implanted in vivo, there is generation filter
Deformation is tilted, displacement, is broken, or even penetrating the danger etc. of blood vessel.Therefore, provisional filter is clinically recommended, in patient
The acute stage merging that deep vein thrombosis occurs, after acute stage, the risk of thrombus breaks loose again takes out filter when reducing.
Vena cava filter is mainly made using metal material such as 316L stainless steels, Nitinol etc..In merging inferior caval vein
After a certain period of time, filter supporting rod can be climbed to some extent by endothelial cell and cover, wrap up, and when taking-up may damage intravascular
Film, therefore it provides a kind of facilitate is taken out and the filter of not arterial intima is actually necessary.
Invention content
The technical problem to be solved in the present invention is to provide a kind of filter, and blood vessel is being implanted to solve prior art filter
Among when, it has not been convenient to filter take out defect.
The present invention provides a kind of filter, including main part and multiple the first support portions on the outside of the main part；
There are the main part multiple tie points, each first support portion to pass through a tie point and the main part phase
Even；Each first support portion includes first supporter, and first supporter is supported generally with described first
In the plane that the vertical central axis of the connected tie point of body and the main part is formed.
The present invention provides a kind of filter, including main part and multiple the second support portions on the outside of the main part；
The main part has multiple tie points；Each second support portion passes through a tie point and the main part phase
Even；Each second support portion includes at least two second supporters, there is at least two the in each second support portion
The vertical central axis that two supporters are respectively arranged on the tie point and the main part that are connected with second supporter is formed
Plane both sides.
The present invention provides a kind of filter, including main part and multiple the first supports being all located on the outside of the main part
Portion and the second support portion；There are the main part multiple tie points, each support portion to pass through a tie point and institute
Main part is stated to be connected；Each first support portion includes first supporter, first supporter generally within and institute
In the plane for stating the vertical central axis formation of the connected tie point of the first supporter and the main part；Each described second
Support portion includes at least two second supporters, there is at least two second supporter difference in each second support portion
Set on the plane both sides that the vertical central axis of the tie point being connected with second supporter and the main part is formed.
In one embodiment, it is additionally provided with recovery body on the proximal part or distal end of the filter；Each supporter
Extends and open to the direction far from the recovery body.
In one embodiment, the supporter includes a lead segment and a radial branch being connected with the lead segment
Support section；The lead segment is from the coupled tie point along the direction far from the recovery body to external radiation, the radial direction
Supporting section is axially extending along the direction far from the recovery body.
In one embodiment, the radial support section is parallel to the central shaft of the main part.
In one embodiment, the supporter prolongs along the direction far from the recovery body to external radiation from the main part
It stretches, and angle is formed with the central shaft of the main part.
In one embodiment, at least partly described supporter on described tie point one end far from being additionally provided with block piece, institute
It is spherical structure to state block piece；Either the block piece is from described in one end direction of the supporter far from the recovery body
The bending structure that longitudinal center's axis direction of filter bends and extends to form；Or the block piece include the bending structure with
And it is set to spherical structure of the bending structure far from described supporter one end.
In one embodiment, the relatively described filter central shaft of the supporter apart from farthest position and the main part most
Radial height difference ranging from 2mm-4mm between big outer diameter.
In one embodiment, the main part further includes the connector being connected between the proximal part and distal end；
The connector includes the first strainer, the second strainer and multiple companies for connecting first strainer and second strainer
Connect section；The tie point be located at first strainer, the linkage section or second strainer it is at least one on.
In one embodiment, the tie point is set on the linkage section, and being provided with for at least described linkage section is described
Being partially toward for tie point is tilted close to filter vertical central axis side.
In one embodiment, it is equipped with anchor on the outside of at least one supporter to pierce, the anchor thorn is towards proximal part or far
Heart end tilts.
Compared with prior art, be provided with support portion on the main part of filter of the present invention, implantation to it is internal when, only support
Portion contacts with each other with blood vessel, has completely cut off being in direct contact for main part and vascular wall, therefore when taking out filter, it is only necessary to
Support portion is detached with blood vessel, can facilitate and take out filter.
Description of the drawings
Present invention will be further explained below with reference to the attached drawings and examples, in attached drawing：
Fig. 1 a- Fig. 1 b are the overall structure diagrams of the filter of the first embodiment of the present invention, and shown filter includes one
Main part and multiple support portions, each support portion include a supporter；
Fig. 2 is the portions A enlarged drawing in Fig. 1；
Fig. 3 a- Fig. 3 b are the overall structure diagrams of main part in Fig. 1；
Fig. 4 a- Fig. 4 b are the structural schematic diagrams of each support portion filter including two supporters；
It includes a supporter that Fig. 5, which is on the support portion of part, includes the knot of the filter of two supporters on the support portion of part
Structure schematic diagram；
Fig. 6 is the inclined structural schematic diagram in direction of part connecting pin towards the filter vertical central axis of main part in Fig. 1；
Fig. 7 to Figure 10 is the distressed structure schematic diagram of support portion installation site on main part in Fig. 1；
Figure 11, which is the supporter end set of filter in Fig. 1, the overall structure diagram of chondritic；
Figure 12, which is the part supporter end set of filter in Fig. 1, the overall structure diagram of bending structure；
Figure 13, which is the end set of part bending structure in fig. 12, to be had chondritic while setting bending structure
The overall structure diagram of the end set chondritic of supporter；
Figure 14 is the structural schematic diagram for being respectively provided with anchor thorn in Fig. 1 on all support portions；
Figure 15 is the structural schematic diagram that anchor thorn is not arranged in Fig. 1 on support portion；
Figure 16 is the overall structure diagram of the filter of second embodiment of the invention；
Figure 17 is the overall structure diagram of the filter of third embodiment of the invention；
Figure 18 is the overall structure diagram of the filter of fourth embodiment of the invention.
Specific implementation mode
For a clearer understanding of the technical characteristics, objects and effects of the present invention, now control attached drawing is described in detail
The filter and preparation method thereof of the present invention.
It should be noted that when element is referred to as " being fixed on " or " being set to " another element, which can be straight
Grounding connection can also be connected to another element indirectly on another element by one or more connecting element
On.When an element is known as " being connected to " another element, it can be connected directly on another element, or
It is connected on another element by one or more connecting element.
In filter field, the closer one end of relative heart is known as proximal part after filter is implanted, and relative heart is farther out
One end be known as distal end.
As shown in Fig. 1 a, 1b and Fig. 2, the filter 100 that first embodiment of the invention provides, for being implanted into body lumen
In to capture the thrombus in tube chamber comprising a main part 1 and multiple support portions 2.The main part 1 includes multiple companies
Contact 10；Each support portion 2 may be contained within the outside of the main part 1, and pass through a tie point 10 and the main body
Portion 1 is connected.
After will there is the filter 100 of support portion 2 to be implanted in body lumen, support portion 2 is directly contacted with lumen wall,
And main part 1 is detached with lumen wall so that when taking out filter 100, it is only necessary to detach support portion 2 with wall of the lumen；
Simultaneously because support portion 2 and wall of the lumen contact surface are smaller, thus it is more convenient when taking-up filter 100, tube chamber is influenced small.
Also referring to Fig. 3 a and 3b, main part 1 includes proximal part 11, distal end 12, and is set to proximal part 11
And the connector 13 between distal end 12；Connector 13 includes 131, second strainers 133, Yi Jiduo of first strainer
A linkage section 132.Multiple linkage sections 132 are along circumferencial direction of connector 13 etc. point setting；First strainer 131 is from multiple connections
132 one end of section extend and converge the reticular structure of the proximal part 11, the second filter to the direction far from the multiple linkage section 132
Net 133 is to extend from 132 other end of multiple linkage sections to the direction far from the multiple linkage section 132 and converge to the telecentricity
The reticular structure at end 12.
Specifically, the first strainer 131 is by one group of 1311 structure of the first Y shape bar along circumferencial direction of connector 13 etc. point setting
At the quantity of the first Y shape bar 1311 is consistent with the quantity of linkage section 132, and every first Y shape bar 1311 includes one first master
Branch section 1312 and two first son fields 1313 separated by one end of the described first main branch section 1312.First main branch section 1312 connects
It is connected between proximal part 11 and two second son fields 1313, and two adjacent of two adjacent first Y shape bars 1311
Two ends of the son field 1313 far from proximal part 11 converge on a linkage section 132.It should be noted that the first main branch
Section 1312 is the root of the first Y shape bar 1311 close to the part of the proximal part 11；Every of the first Y shape bar 1311
First end of the son field 1313 far from the proximal part 11 is the branch end of the first Y shape bar 1311.
Second strainer 133 is made of one group of second Y shape bar 1331 along circumferencial direction of connector 13 etc. point setting, and second
The quantity of Y shape bar 1331 is the half of 132 quantity of linkage section.Every second Y shape bar 1331 includes a second main branch section
1332 and two second son fields 1333 being separated by one end of the described second main branch section 1332.The second main branch section 1332 connects
It is connected between the distal end 12 and two second son fields 1333, and every second son field 1333 of the second Y shape bar 1331
It is connected on a linkage section 132.It should be noted that the second main branch section 1332 is close to the part of the distal end 12
The root of the second Y shape bar 1331；Every second son field 1333 of the second Y shape bar 1331 is far from the distal end 12
End be the second Y shape bar 1331 branch end.
As can seen above, the main part 1 of filter 100 is in unsymmetric structure on the whole, and the quantity of the first Y shape bar 1311 is the
Twice of two Y shape bars, 1331 quantity, the i.e. density of the body of rod of the first strainer 131 are more than the density of 133 body of rod of the second strainer.
It should be noted that connector 13 is made of such as Nitinol of the material with shape memory function, will filter
Device 100 is delivered to inside of human body tube chamber and after being discharged in the delivery pipe sheath of conveyer, can restore deformation to unfolded state.Into
During promoting circulation of blood bolt filters, blood flow is flowed from distal end 12 to proximal part 11, and thrombus is first from the 2nd smaller Y of body of rod density
Pass through in the gap that shape bar 1331 is formed, enters inside filter 100, later via the first larger Y shape bar of body of rod density
1311 blockings are to be retained in inside filter 100, to realize the filtering to thrombus.Distal end 12 is provided with recovery body 112, example
Such as it is to hook body either helicitic texture, for taking out the filtered filter of thrombus 100 will be carried out.
Shown in Fig. 1 a, Fig. 1 b and Fig. 2, each support portion 2 includes a supporter 21, each
Supporter 21 is connected by a tie point 10 with main part 1, the vertical central axis of each tie point 10 and the main part 1
It is respectively formed a plane；Each supporter 21 is generally within the tie point 10 being connected with it and the main part 1
Vertical central axis formed plane in.Each supporter 21 is generally within the tie point 10 and institute being connected with it
It states in the plane of the vertical central axis formation of main part 1 and refers to：Each supporter 21 is substantially located at the tie point
10, in the plane of the vertical central axis formation of the main part 1, allow the presence of deviation slightly.It is understood that please referring to
Shown in Fig. 4 a and Fig. 4 b, in the filter 100 ' shown in other embodiment, each support portion 2 ' can also include multiple supports
Body 21 '；Multiple supporters 21 ' are connected with a tie point 10 ', have at least two supporters 21 ' to set up separately in multiple supporters 21 '
In the plane both sides that the vertical central axis of the tie point 10 ' being connected with it and main part 1 ' is formed.
It can also be appreciated that as shown in figure 5, in other filters 100 ", support portion include the first support portion 2 " with
And the second support portion 2a ", there are one the first supporter 21 ", each second support portion 2a " settings for each first support portion 2 " setting
There are at least two second supporter 21a ".Specifically, be substantially the same with filter 100, the first supporter 21 " generally with this
In the plane that the connected tie point 10 " of one supporter 21 " is formed with 100 " vertical central axis of filter；It is identical as filter 100 ', the
At least two in two supporter 21a " be divided into and tie point 10 " that second supporter 21a " is connected and filter 100 " it is longitudinal
The plane both sides that central shaft is formed.
It should be noted that by by a supporter 21 (the first supporter 21 ") for support portion 2 (the first support portion 2 ")
Basic setup is in being correspondingly connected in the plane a little formed with vertical central axis, or by (the second supporter of multiple supporters 21 '
21 ") at least two are divided into the plane both sides for being correspondingly connected with and a little being formed with vertical central axis, then by filter 100 (100 ',
100 ") when in overall shrinkage to sheath, between each supporter (including supporter (21 (21 '), the first supporter 21 ", second
Supporter 21a ") or each supporter (including supporter 21 (21 '), the first supporter 21 ", second supporter 21a ") with
The case where being not in intersection between connector 13 (13 ', 13 "), avoid each supporter (including supporter 21 (21 '),
First supporter 21 ", the second supporter 21a ") intersect between connector 13 (13 ', 13 ") and the filter 100 that brings
(100 ', 100 ") the case where cannot discharge completely after in being implanted into tube chamber.In addition, when taking out filter 100 (100 ', 100 ")
It can also be by directly pulling the mode of filter 100 (100 ', 100 ") to distal end, so that it may with by filter 100 (100 ', 100 ")
It takes out, without either being taken filter 100 (100 ', 100 ") using other modes by rotating to pull towards distal end again
Go out, it is easy to operate.
It should be noted that in the present embodiment, when filter 100 is implanted in tube chamber, since wall of the lumen is to supporter
There are one radially inward pressure to act on for 21 tools, and supporter 21 may be recessed in wall of the lumen at this time, in order to make connector 13
It is preferably detached with wall of the lumen, supporter 21 is maximum apart from highest distance position and the main part 1 with respect to 100 vertical central axis of filter
Radial height difference between outer diameter is 2mm-4mm, preferably selects 3mm.
It is understood that in the present embodiment, each supporter 21 is with respect to filter 100 vertical central axis distance most amphi position
It is different to set the radial height difference being connected thereto a little between 10, for example, supporter 21 is with respect to 100 vertical central axis of filter
It is poor apart from highest distance position and the radial height between 1 maximum outside diameter of the main part, it is vertical with respect to filter 100 to be more than supporter 21
It is poor apart from highest distance position it to be connected thereto the radial height a little between 10 to central shaft.
Such as in filter 100-1 as shown in FIG. 6, linkage section 132-1 includes first segment 1321 and second segment 1322,
One section 1321 substantially parallel with filter 100-1 vertical central axis, and is set to linkage section 132-1 close to the one of proximal part 11-1
Side；Second segment 1322 and first segment 1321 are connected with each other, and the one end of second segment 1322 far from first segment 1321 is towards filter
Side where 100-1 vertical central axis tilts, and at least partly supporter 21-1 is set in second end 1322 at this time.Second segment
The 1322 radial height difference ranging from 1mm-3mm close to one end of distal end 12-1 with respect to first segment 1321 preferably selects 2mm.
It is understood that linkage section 132-1 can be in brace shape, it is longitudinal towards filter 100-1 close to the side of distal end 12-1
The direction of central shaft tilts, to drive the whole directions towards filter 100-1 vertical central axis linkage section 132-1 to tilt.
It, then can be with by tilting the side where at least partly linkage section 132-1 towards filter 100-1 vertical central axis
Increase the supporter 21-1 being set on linkage section 132-1 sloping portions with respect to filter 100-1 vertical central axis distances most amphi position
The difference in height between supporter 132-1 tie points 10-1 is set, so as to after filter 100-1 is implanted in blood vessel,
It prevents endothelium from climbing and is layed onto the positions tie point 10-1, influence filter recovering effect.
Shown in Fig. 2, each supporter 21 includes a lead segment 211 and a radial support
Section 212；The lead segment 211 is from the coupled tie point 10 along one end far from recovery body 112 (towards proximal part
11) to external radiation, the radial support section 212 is connected with the lead segment 211 and along far from 112 one end of recovery body in direction
The direction of (towards proximal part 11) is axially extending, and preferably radially supporting section is parallel to the central shaft of the main part, i.e. supporter
21 towards filter 100 11 one end open of proximal part,.Radial support section 212 is linear with linkage section 132, and mutually flat
Row.By the way that open supporter 21 is arranged, when extracting filter 100 out from human body along distal end 12, since supporter 21 is close
One end where heart end 11 does not have resistance, therefore can easily be taken out by external force.
There is no particular limitation for the position of supporter 21, and in the present embodiment, there are two supports for setting on a connector 13
Portion 2, each support portion 2 includes a supporter 21, and two supporters 21 are set to the opposite end of linkage section 132.It can be with
Understand, the tie point 10 that support portion 2 is connected with main part 1 may be disposed at the first strainer 131, the linkage section 132 of main part 1
Or second strainer 133 it is at least one on, there is no particular limitation for the quantity of tie point 10, is with two tie points 10 below
Example illustrates.
In filter 100-2 as shown in Figure 7, a tie point 10-2 is set to the centre position of linkage section 132-2, another
A tie point 10-2 is set to linkage section 132-2 close to one end of distal end 12-2；In filter 100-3 as shown in Figure 8, one
Tie point 10-3 is set to the centre position of linkage section 132-3, another tie point 10-3 is set to linkage section 132-3 close to close
One end of heart end 11-3；In filter 100-4 as shown in Figure 9, a tie point 10-4 is set on linkage section 132-4 (can be with
Be end may be centre position), another tie point 10-4 is set on the first strainer 131-4；As shown in Figure 10
In filter 100-5, a tie point 10-5 is set on linkage section 132-5 (can be centre position can also be end), separately
An outer tie point 10-5 is set on the second strainer 133-5.It is understood that the setting of tie point position may be it
Its mode, is not specifically limited herein.
Simultaneously, it should be noted that the free end end of supporter 21 is smooth, to prevent the free end of supporter 21 to be pierced into
Onto blood vessel.It can be understood that block piece can also be arranged in the free end end of supporter 21.
Filter 100-6 as shown in figure 11, at least partly one end end of the separate recovery body of supporter 21-6 are equipped with ball
Shape structure 214-6, spherical structure 214-6 are by the way that one end of the separate recovery body of supporter 21 is heated shape by argon arc welding
At, wherein the diameter of spherical structure 214-6 is not particularly limited.
Filter 100-7 as shown in figure 12, at least partly one end of the separate recovery body of supporter 21-7 are towards filter
100-7 vertical central axis bends and extends to form bending structure 215-7, it is therefore prevented that the supporter 21-7 of filter 100-7 is pierced into
In blood vessel, it is to be understood that there is no particular limitation for the length of the bending of bending structure 215-7.
Filter 100-8 as shown in fig. 13 that, at least partly one end of the separate recovery body of supporter 21-8 are towards filter
While 100-8 vertical central axis is bent to form bending structure 215-8, also in bending structure 215-8 far from supporter 21-8's
End set spherical structure 214-8.Supporter 21-8 has been further prevented to be pierced into blood vessel.
Continuing with referring to Fig. 2,21 outside of at least one supporter is equipped with anchor and pierces 213, and anchor thorn 213 is optionally set to
In the either radial support section 212 of lead segment 211, the anchor thorn 213 is tilted towards proximal part 11.It should be noted that working as anchor
Thorn 213 is when being set to lead segment 211, should be with after in the implantation to tube chamber of filter 100, anchor thorn 213 needs that wall of the lumen can be pierced into
In tissue, lumen wall tissue is not played the role of being pierced into fix filter 100 in the free end of supporting section 212.It can manage
It solves, the anchor thorn 213 on multiple supporters 21 can be tilted simultaneously towards proximal part 11 can also be simultaneously towards distal end 12
It tilts, or optionally the anchor thorn 213 on part supporter 21 is tilted towards proximal part, on other part supporter 21
Anchor thorn 213 is tilted towards distal end 12.When filter 100 is placed in the tube chamber of human body, anchor thorn 213 is pierced into the group of lumen wall
In knitting, fixation of the filter 100 in tube chamber is realized.Since anchor thorn 213 is disposed on 21 outside of supporter, anchor thorn 213 is inserted into
Only it is limited to the depth in wall of the lumen with the length of anchor thorn 213, therefore can't has wall of the lumen compared with macrolesion.
It is understood that anchor thorn 213 is optionally set to one or more in multiple supporters 21 simultaneously
On；Or anchor is set not on supporter 21 and pierces 213, but filter is realized to the support force of wall of the lumen by supporter 21
100 with the fixation of wall of the lumen.Anchor thorn is respectively provided on each supporter 21-9 being arranged on connector 13-9 as Figure 14 is illustrated
The overall structure diagram of the filter 100-9 of 213-9；Figure 15 is illustrated on the supporter 21-10 of connector 13-10 settings
It is not provided with the overall structure diagram of the filter 100-10 of anchor thorn.
It should be noted that anchor thorn 213 is also by such as NiTi of the material with shape memory function as connector 13
Alloy is made, and filter 100 is being delivered to inside of human body tube chamber and after being discharged in the delivery pipe sheath of conveyer, can restore deformation
To unfolded state.
There is no particular limitation for the connection type of the various pieces of filter 100.In the present embodiment, the supporter 21 and institute
State main part 1, the supporter 21 and the anchor thorn 213 is integrally formed by way of laser cutting.It is appreciated that
, supporter 21, main part 1 and anchor thorn 213 be chosen as relatively independent part, and mutually independent two parts pass through weldering
The mode connect is connected.
Second embodiment：
As shown in figure 16, the filter 100a of second embodiment provided by the invention, filter 100a and first embodiment
Filter 100 is substantially the same comprising a main part 1a and at least one supporter 21a.Main part 1a includes proximal part
11a, distal end 12a, and the connector 13a that is set between proximal part 11a and distal end 12a.On the main part 1a
Equipped with recovery body 112a, for the filter 100a being implanted in tube chamber to be recycled by the recovery body 112a.Each branch
Support body 21a may be contained within the outside of the main part 1a, and the connector of each one end the supporter 21a and main part 1a
13a is connected, and the other end forms one end open of the free end along the separate recovery body 112a of main part 1a.
The difference is that recovery body 112a is set at proximal part 11a, for recycling filter 100a from proximal part.This
When, the distal end that each supporter 21a is directed towards the filter 100a extends and opens.
3rd embodiment
As shown in figure 17, the filter 100b of 3rd embodiment provided by the invention, filter 100b and first embodiment
Filter 100 is substantially the same comprising a main part 1b and multiple supporter 21b；Main part 1b includes proximal part 11b, remote
Heart end 12b, and to be set to the connector 13b between proximal part 11b and distal end 12b；Each supporter 21b is placed in
The outside of the main part 1b.Each one end the supporter 21b is connected with the connector 13b of main part 1b, and the other end is formed
The proximal part 11b of one free end towards main part 1b are opened.The optional anchor that is equipped with pierces 213b on supporter 21b.Each supporter 21b is remote
It is optional from the end of recovery body to be provided with block piece, i.e. spherical structure 214b either bending structures (not shown), or spherical shape
The combination of structure 214b and bending structure.
The difference is that each supporter 21b itself is not in bending, the supporter 21b is from the connection
The radial braces extended outward to form of body 13b, form an angle with the vertical central axis shape of main part 1b.Meanwhile working as branch
When being provided with anchor thorn 213b on support body 21b, since supporter 21b is in brace shape, therefore anchor thorn 213b is not implemented with first
Lead segment 211 and radial support section 212 in example carry out the differentiation on position.
Fourth embodiment
As shown in figure 18, it is the filter 100c of fourth embodiment provided by the invention, filter 100c and 3rd embodiment
Filter 100b be substantially the same comprising a main part 1c and multiple supporter 21c.Main part 1c includes proximal part
11c, distal end 12c, and the connector 13c that is set between proximal part 11c and distal end 12c.On the main part 1c
Equipped with recovery body 112c, for the filter 100c being implanted in tube chamber to be recycled by the recovery body 112c.Each institute
State the outside that supporter 21c is placed in the main part 1c.Each supporter 21c is from the connector 13c along far from described
The radial extension in side of recovery body 112c forms brace shape.
The difference is that recovery body 112c is set at proximal part 11c, for recycling filter from proximal part 11c.This
When, the distal end 12c of each supporter 21c towards the filter 100c extend and open.
It is understood that in above-mentioned six embodiments, the shape of supporter can also be the either other of bending
Shape pulls the mode of filter that can take out filter as long as can realize only by from distal end (or proximal part)；It filters simultaneously
When device is conveyed in delivery sheath, between supporter and connector, it will not intersect between multiple supporters.In addition,
The body of rod density of first strainer can be complete equal to the body of rod density of the second strainer or both the first strainer and the second strainer structure
Holohedral symmetry.
In conclusion the present invention filter main part on be provided with support portion, implantation to it is internal when, only support portion with
It contacts with each other between lumen wall, has completely cut off being in direct contact for main part and wall of the lumen, therefore when taking out filter, it is only necessary to
Support portion is detached with lumen wall, it is convenient to take out filter；Simultaneously in the present invention free end of supporter towards filter
One end open, when taking out filter, the free end resistance of supporter is smaller, therefore it is more convenient to take out filter；In addition, due at least
One supporter is divided into the both sides for being correspondingly connected with the plane a little formed with vertical central axis or basic setup in corresponding institute
It states in plane, filter can be taken out only along the direction that filter is axially twitched, it is easy to operate.
The embodiment of the present invention is described with above attached drawing, but the invention is not limited in above-mentioned specific
Embodiment, the above mentioned embodiment is only schematical, rather than restrictive, those skilled in the art
Under the inspiration of the present invention, without breaking away from the scope protected by the purposes and claims of the present invention, it can also make very much
Form, all of these belong to the protection of the present invention.
Claims (9)
1. a kind of filter, which is characterized in that including main part and multiple the first support portions on the outside of the main part；
There are the main part multiple tie points, each first support portion to pass through a tie point and the main part phase
Even；
Each first support portion includes first supporter, and first supporter is supported generally with described first
In the plane that the vertical central axis of the connected tie point of body and the main part is formed；
It is additionally provided with recovery body on the proximal part or distal end of the filter；Supporter on each tie point is to separate
The direction of the recovery body extends and opens；The main part further includes the company being connected between the proximal part and distal end
Junctor；The connector includes the first strainer, the second strainer and for connecting first strainer and second strainer
Multiple linkage sections；The tie point be located at first strainer, the linkage section or second strainer it is at least one on；
Anchor is equipped on the outside of at least one supporter to pierce, the anchor thorn is tilted towards proximal part or distal end.
2. a kind of filter, which is characterized in that including main part and multiple the second support portions on the outside of the main part；Institute
Stating main part has multiple tie points；Each second support portion is connected by a tie point with the main part；
Each second support portion includes at least two second supporters, there is at least two the in each second support portion
The vertical central axis that two supporters are respectively arranged on the tie point and the main part that are connected with second supporter is formed
Plane both sides；
It is additionally provided with recovery body on the proximal part or distal end of the filter；Supporter on each tie point is to separate
The direction of the recovery body extends and opens；The main part further includes the company being connected between the proximal part and distal end
Junctor；The connector includes the first strainer, the second strainer and for connecting first strainer and second strainer
Multiple linkage sections；The tie point be located at first strainer, the linkage section or second strainer it is at least one on；
Anchor is equipped on the outside of at least one supporter to pierce, the anchor thorn is tilted towards proximal part or distal end.
3. a kind of filter, which is characterized in that including main part and multiple the first support portions being all located on the outside of the main part
With the second support portion；The main part has multiple tie points, each support portion by a tie point with it is described
Main part is connected；
Each first support portion includes first supporter, and first supporter is supported generally with described first
In the plane that the vertical central axis of the connected tie point of body and the main part is formed；
Each second support portion includes at least two second supporters, has at least two institutes in each second support portion
State the vertical central axis that the second supporter is respectively arranged on the tie point and the main part that are connected with second supporter
The plane both sides of formation；
It is additionally provided with recovery body on the proximal part or distal end of the filter；Supporter on each tie point is to separate
The direction of the recovery body extends and opens；The main part further includes the company being connected between the proximal part and distal end
Junctor；The connector includes the first strainer, the second strainer and for connecting first strainer and second strainer
Multiple linkage sections；The tie point be located at first strainer, the linkage section or second strainer it is at least one on；
Anchor is equipped on the outside of at least one supporter to pierce, the anchor thorn is tilted towards proximal part or distal end.
4. filter according to any one of claims 1 to 3, which is characterized in that the supporter include lead segment with
An and radial support section being connected with the lead segment；The lead segment is from the coupled tie point along far from described
To external radiation, the radial support section is axially extending along the direction far from the recovery body in the direction of recovery body.
5. filter according to claim 4, which is characterized in that the radial support section is parallel to the center of the main part
Axis.
6. filter according to any one of claims 1 to 3, which is characterized in that the supporter is from the main part along remote
Direction from the recovery body extends to external radiation, and forms angle with the central shaft of the main part.
7. filter according to any one of claims 1 to 3, which is characterized in that at least partly described supporter is far from described
Tie point is additionally provided with block piece on one end,
The block piece is spherical structure；Either the block piece is from one end court of the supporter far from the recovery body
The bending structure for bending and extending to form to longitudinal center's axis direction of the filter；Or the block piece includes the bending
Structure and it is set to spherical structure of the bending structure far from described supporter one end.
8. filter according to any one of claims 1 to 3, which is characterized in that the relatively described filter center of the supporter
Wheelbase is from the poor ranging from 2mm-4mm of radial height between farthest position and the main part maximum outside diameter.
9. filter according to claim 8, which is characterized in that the tie point is set on the linkage section, at least institute
Being partially toward for the tie point that be provided with for stating linkage section tilts close to filter vertical central axis side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510374776.4A CN106308974B (en) | 2015-06-30 | 2015-06-30 | Filter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510374776.4A CN106308974B (en) | 2015-06-30 | 2015-06-30 | Filter |
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| Publication Number | Publication Date |
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| CN106308974A CN106308974A (en) | 2017-01-11 |
| CN106308974B true CN106308974B (en) | 2018-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510374776.4A Active CN106308974B (en) | 2015-06-30 | 2015-06-30 | Filter |
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Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108013951B (en) * | 2016-11-02 | 2021-06-04 | 先健科技(深圳)有限公司 | Filter device |
| CN108125729B (en) * | 2016-12-01 | 2020-10-27 | 先健科技(深圳)有限公司 | Filter device |
| CN108143518B (en) | 2016-12-06 | 2020-10-27 | 先健科技(深圳)有限公司 | Filter device |
| 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 |
| 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 |
| WO2019128652A1 (en) * | 2017-12-26 | 2019-07-04 | 先健科技(深圳)有限公司 | Filter |
| CN109953838B (en) * | 2017-12-26 | 2021-07-27 | 先健科技(深圳)有限公司 | Filter device |
| CN109953839B (en) * | 2017-12-26 | 2022-01-04 | 先健科技(深圳)有限公司 | Filter device |
| CN109199631B (en) * | 2018-09-26 | 2024-02-23 | 李雷 | Inferior vena cava embolic filter |
| CN113633431A (en) * | 2020-05-11 | 2021-11-12 | 上海蓝脉医疗科技有限公司 | Filter device |
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| CN106308974A (en) | 2017-01-11 |
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