CN208910580U - Overlay film frame - Google Patents
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- CN208910580U CN208910580U CN201721090738.7U CN201721090738U CN208910580U CN 208910580 U CN208910580 U CN 208910580U CN 201721090738 U CN201721090738 U CN 201721090738U CN 208910580 U CN208910580 U CN 208910580U
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- rod
- overlay film
- secondary diaphragm
- wave
- film frame
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Abstract
The utility model relates to a kind of overlay film frames, including bare bracket and the overlay film being connect with the bare bracket, the overlay film includes primary diaphragm and the secondary diaphragm that is bonded with the primary diaphragm, the primary diaphragm covers the surface of the bare bracket, the secondary diaphragm covers surface of the bare bracket far from the primary diaphragm, the bare bracket includes multiple axially distributed wave circles, the wave circle includes multiple wave crests, multiple troughs and the multiple bodies of rod for connecting the adjacent wave crest and the trough, the secondary diaphragm covers at least one body of rod, and expose the wave crest and the trough, and the angle between the axial direction of extending direction and the overlay film frame of the secondary diaphragm at the capped body of rod position is not more than 75 °.Above-mentioned overlay film frame, the axial length of exposed region is larger at the wave crest and/or trough of wave circle, so that can improve the flexibility of overlay film frame under conditions of guaranteeing stability movably apart from larger between wave circle.
Description
Technical field
The utility model relates to interventional medical device technical field more particularly to a kind of overlay film frames.
Background technique
Overlay film frame can be used at present and implement endovascular graft the lesion region in body lumen is isolated, for example, can adopt
Completely cut off artery dissection or aneurysm in the blood vessel with overlay film frame.Such method has that operation wound is small, transfusion volume is few in art, art
The advantages that recovery is fastly afterwards and the hospital stays is short, therefore gradually replace traditional open procedures.
Overlay film frame generally comprises metallic support and impermeable covering material, covering material wrap metallic support
It wraps up in, after lesion locations discharge, covering material plays the role of completely cutting off blood flow.The overlay film elongation percentage of ePTFE material is high variable
Shape, while having certain viscosity between ePTFE material, when temperature reaches 327 degree, ePTFE material can melt, cooling rear film it
Between will mutually bond, bond strength is obviously improved.Using the characteristic, overlay film frame more commonly used at present is generally used
The structure of ePTFE inner membrance, metallic support, ePTFE outer membrane, by the binding force between interior outer membrane by metal branch after high-temperature process
Frame wraps.The deformability that often will limit overlay film frame after being fixed due to metallic support film reaches needs
The overlay film frame of larger flexibility generally reduces constraint of the covering material to metallic support by the way of the overlay film of part.
Currently, more commonly used part overlay film frame is the mode of strip overlay film, that is, inner membrance covers the pipe of entire metallic support
Cavity wall is responsible for isolation blood flow in vivo.Outer membrane is covered with bar form in metallic support outer wall section, to realize metallic support
It is fixed, wherein the region not covered by outer membrane, can provide the space of relative displacement, for metallic support to realize overlay film frame
Flexibility.
Referring to Fig. 1, its structural schematic diagram for overlay film frame 11 in the prior art.Overlay film frame 11 includes metallic support
And it is covered on the overlay film on metallic support.Metallic support includes the wave circle 12 of multiple axial alignments, overlay film include inner membrance 14 and with
The a plurality of outer membrane 16 that inner membrance 14 is bonded, inner membrance 14 cover the inner wall of metallic support, and outer membrane 16 is strip structure, each outer membrane 16
A wave circle 12 is covered from the circumferencial direction of metallic support, and the wave crest and trough of exposed wave circle 12, in this way, wave circle 12 can be
Relative displacement occurs in axial direction, to improve the deformability of overlay film frame.
Referring to Fig. 2, when overlay film frame 11 deforms, such as when bending, wave crest/wave of wave circle 12 close to each other
Paddy is easy to interfere with outer membrane 16, is easy to cause the deformation of outer membrane 16, tearing even to fall off, influences the peace that overlay film frame 11 uses
Full performance, and reduce the overlay area of outer membrane 16, although deformation process medium wave peak/trough and outer can be reduced to a certain extent
A possibility that film interferes improves the flexibility of overlay film frame 12, but may result in the knot of outer membrane 16 Yu inner membrance 14 in this way
It is smaller to close intensity, outer membrane is caused easily to loosen or even fall off.
Utility model content
Based on this, it is necessary to provide a kind of overlay film frame, flexibility is preferable, high stability.
A kind of overlay film frame, including bare bracket and the overlay film connecting with the bare bracket, the overlay film includes primary diaphragm
And the secondary diaphragm being bonded with the primary diaphragm, the primary diaphragm cover the surface of the bare bracket, the secondary diaphragm
Surface of the bare bracket far from the primary diaphragm is covered, the bare bracket includes multiple axially distributed wave circles, described
Wave circle includes multiple wave crests, multiple troughs and the multiple bodies of rod for connecting the adjacent wave crest and the trough, the secondary diaphragm
At least one body of rod is covered, and exposes the wave crest and the trough, and the secondary diaphragm is in the capped bar
Extending direction at body position and the angle between the axial direction of the overlay film frame are not more than 75 °.
The body of rod extending direction and the secondary diaphragm that is covered on the body of rod in one of the embodiments,
The angle of extending direction is 90 ± 20 °.
Second film is covered at least three bodies of rod of each wave circle in one of the embodiments,
Piece.
The body of rod of the wave circle is all covered with the secondary diaphragm in one of the embodiments,.
The secondary diaphragm is a plurality of in one of the embodiments, and at least one secondary diaphragm at least covers two
A wave circle.
At least one secondary diaphragm covers all wave circles of the bare bracket in one of the embodiments,.
The secondary diaphragm is a plurality of in one of the embodiments, described in at least one secondary diaphragm covering one
The body of rod of at least two of wave circle.
The secondary diaphragm is turned back after the body of rod for covering the wave circle to cover in one of the embodiments,
The body of rod adjacent thereto.
The width of described secondary diaphragm each section is equal in one of the embodiments, and the secondary diaphragm is located at
The middle part of the body of rod.
The body of rod is covered with length of the part along body of rod extending direction of the secondary diaphragm in one of the embodiments,
Spend the 1/5 of the length for being not less than the body of rod along the body of rod extending direction.
The secondary diaphragm, which encloses, in one of the embodiments, sets to form multiple parallelogram mesh.
The quantity of the body of rod of each wave circle is equal in one of the embodiments,.
Multiple wave circles form reticular structure, and two neighboring wave in the axial direction in one of the embodiments,
The wave crest of circle is oppositely arranged with the trough, and mutually hanging buckle forms interlocking structure.
In one of the embodiments, in the wave circle of two mutual hanging buckles, pass through the institute of the crest location hanging buckle
The extending direction for stating the secondary diaphragm on the body of rod of wave circle is roughly parallel in another wave circle and body of rod phase described in this
The extending direction of the adjacent and ipsilateral body of rod.
Above-mentioned overlay film frame, compared with the strip overlay film frame of circumferentially overlay film, under equal conditions, i.e., naked branch
When frame is identical, secondary diaphragm of same size, the axial length of exposed region is larger at the wave crest and/or trough of wave circle, so that
Movably apart from larger between wave circle, so as to improve the flexibility of overlay film frame under conditions of guaranteeing stability.And
And each secondary diaphragm can extend over whole wave circles, the length of each secondary diaphragm can be larger, can be improved every
The bond strength of secondary diaphragm and primary diaphragm, improves the stability of overlay film frame, while can also reduce secondary diaphragm
Quantity reduces overlay film difficulty, improves production efficiency.It, can be in addition, can also be connected with each other between the secondary diaphragm of different directions
The bond strength for further increasing secondary diaphragm Yu wave circle improves the stability of overlay film frame.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of overlay film frame in the prior art；
Fig. 2 is partial structural diagram of the overlay film frame shown in FIG. 1 in deformation process；
Fig. 3 is the structural schematic diagram of the overlay film frame of the utility model first embodiment；
Fig. 4 is the structural schematic diagram of the bare bracket of overlay film frame shown in Fig. 3；
Fig. 5 is the partial structural diagram after overlay film frame shown in Fig. 3 expansion；
Fig. 6 is the partial structural diagram of secondary diaphragm and body of rod cooperation in Fig. 3；
Fig. 7 is the secondary diaphragm of the overlay film frame of the utility model second embodiment and the structural representation of bare bracket cooperation
Figure；
Fig. 8 is the structural schematic diagram of the overlay film frame of the utility model 3rd embodiment；
Fig. 9 is the structural schematic diagram of the overlay film frame of the utility model fourth embodiment；
Figure 10 is the structural schematic diagram of the bare bracket of overlay film frame shown in Fig. 9；
Figure 11 is chimney bracket and the mutually matched structural schematic diagram of aorta tectorial membrane stent；
Figure 12 is windowing stent and the mutually matched structural schematic diagram of aorta tectorial membrane stent.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.
" overlay film frame " refers to the structure that bare bracket surface is covered with after film in the application, and bare bracket refers to including multiple
There is no the structure of film between wavy annular object and each wavy annular object.
The technical solution of the utility model is further described below with reference to specific embodiment.
Embodiment 1
Referring to Fig. 3, overlay film frame 10 includes bare bracket 100 and the overlay film 200 connecting with bare bracket 100.Overlay film 200 wraps
Include primary diaphragm 210 and the secondary diaphragm being bonded with primary diaphragm 210 220.Primary diaphragm 210 covers the surface of bare bracket 100,
To obstruct blood flow, prevent blood flow from flowing to outside from the inside of overlay film frame 10.Secondary diaphragm 220 covers bare bracket 100 far from the
The surface of one diaphragm 210, bare bracket 100 is fixed between primary diaphragm 210 and secondary diaphragm 220.In the present embodiment,
Primary diaphragm 210 is located at the inner surface of bare bracket 100, and secondary diaphragm 220 is located at the outer surface of bare bracket 100.Certainly, at other
In embodiment, primary diaphragm 210 can also be located at the outer surface of bare bracket 100, and secondary diaphragm 220 is located at the interior of bare bracket 100
Surface.
Specific in the present embodiment, primary diaphragm 210 and secondary diaphragm 220 are all made of ePTFE (expanded PTFE)
Overlay film, the wave circle made of titanium-nickel wire braiding of bare bracket 100 form.
Referring to Figure 4 together, bare bracket 100 includes multiple axially distributed wave circles 110, and wave circle 110 includes multiple waves
Multiple bodies of rod 112 between peak 111, multiple troughs 113 and connection adjacent peaks 111 and trough 113, secondary diaphragm 220 cover
An at least body of rod 112, and expose wave crest 111 and trough 113.Please refer to fig. 5, secondary diaphragm 220 is in capped bar
Extending direction at 112 position of body and the angle between the axial direction of overlay film frame 10 are not more than 75 °.Preferably, the second film
The angle of the axial direction of extending direction and overlay film frame 10 of the piece 220 at capped 112 position of the body of rod is not more than 65 °.
Above-mentioned overlay film frame 10, compared with the strip overlay film frame of along the circumferential direction overlay film, under equal conditions, i.e., bare bracket it is identical,
Secondary diaphragm it is of same size when, the axial length of exposed region is larger at the wave crest 111 and/or trough 113 of wave circle 110, makes
Between wave circle 110 movably apart from larger, so as under conditions of guaranteeing stability, raising overlay film frame 10 it is submissive
Property.
Preferably, the axial direction side of extending direction and overlay film frame of the secondary diaphragm 220 at capped 112 position of the body of rod
To angle be 30 °~60 °, to further increase the axial length of exposed region at wave crest 111 and/or trough 113, further
Improve the flexibility of overlay film frame 10.
Please refer to fig. 5, the extension side of the extending direction of the body of rod 112 and the secondary diaphragm 220 being covered on the body of rod 112
To angle be 90 ± 20 °, that is to say, that secondary diaphragm 220 along 112 extending direction of the body of rod in 90 ± 20 ° direction cover
The body of rod 112.It should be noted that being likely to occur multiple extending directions, the extension of secondary diaphragm 220 on a secondary diaphragm 220
Direction refers to the extending direction for the part that secondary diaphragm 220 is covered on the body of rod 112.When there are two not for the covering of secondary diaphragm 220
With extending direction the body of rod 112 when, secondary diaphragm 220 can not with the body of rod 112 cover area change extending direction so that
Extending direction with the body of rod 112 is in suitable angle.Further, the extending direction of the body of rod 112 and it is covered on the body of rod 112
On the angle of extending direction of secondary diaphragm 220 be 90 ± 10 °, facilitate secondary diaphragm 220 and do not changing extending direction
Under the conditions of cover more wave circle 110 as far as possible, to reduce the difficulty of overlay film, improve production efficiency.Preferably, secondary diaphragm
220 extending direction is parallel with the adjacent extending direction of the body of rod 112 of the body of rod 112 for being covered with secondary diaphragm 220.That is, the
Angle between two diaphragms 220 and the body of rod 112 for being covered with secondary diaphragm 220 be equal to the body of rod 112 at crest location with
The angle of its adjacent body of rod 112.
Please continue to refer to Fig. 4, two bodies of rod 112 of each wave circle 110 at 113 position of corresponding wave crest 111 and/or trough
Angle it is equal, can contribute to secondary diaphragm 220 do not change extend under conditions of cover more wave circle as far as possible.Specifically
The quantity on ground, the body of rod 112 in each wave circle 110 is equal, can help improve the consistency of overlay film frame 10.More specifically,
The body of rod 112 is equal in length in each wave circle 110.Angle in each wave circle 110 between the adjacent body of rod 112 is unequal.It can manage
Solution, in other embodiments, the body of rod quantity of multiple wave circles 110 can also be not completely equivalent, and the length of the body of rod 112 can also
With unequal, the angle between two bodies of rod 112 can also be not completely equivalent.For example, when bare bracket 100 is pyramidal, bar
Angle between body 112 can be unequal, and the length of the body of rod 112 can also be not completely equivalent.
Specific in the present embodiment, multiple wave circles 110 form reticular structure, and two neighboring wave circle in the axial direction
110 wave crest 111 is oppositely arranged with trough 113, and mutually hanging buckle forms interlocking structure.Preferably, the wave of two mutual hanging buckles
In circle 110, substantially by the extending direction of the secondary diaphragm 220 on a wherein body of rod 112 for the wave circle 110 of crest location hanging buckle
Another wave circle 110 is parallel to be connected with the body of rod 112 and the extending direction of the ipsilateral body of rod, that is to say, that it is viewed from above, four
In the root body of rod 112 interconnected, the extending direction of the secondary diaphragm 220 on the body of rod 112 of underlying wave circle 110 is substantially
It is parallel to the extending direction in square wave circle with the ipsilateral body of rod 112 of the body of rod 112 for being covered with secondary diaphragm 220, it in this way can be with
The axial length for further increasing exposed region at wave crest 111 and/or 113 position of trough, improves the flexibility of overlay film frame 10.
It should be noted that the substantially parallel angle referred between both direction in the application can be in the range of 180 ° ± 10 °
Variation.
Please continue to refer to 5, the width of 220 each section of secondary diaphragm is equal, and secondary diaphragm 220 is located at the body of rod 112
Middle part.Referring to Figure 6 together, the body of rod 112 be covered with secondary diaphragm 220 part it is not small along the length W of 112 extending direction of the body of rod
In the 1/5 of total length L of the body of rod 112 on 112 extending direction of the body of rod, the wave crest 111 and trough 113 of wave circle 110 can be made
The exposed region at place is larger, at such wave crest 111 or trough 113 occur relative displacement length it is larger, overlay film frame 10 it is soft
It is pliable that preferably and secondary diaphragm 220 and the contact area of primary diaphragm 210 are larger so that the stability of overlay film frame 10 compared with
It is good.In the present embodiment, all bodies of rod 112 be covered with secondary diaphragm 220 part it is equal along the length W of 112 extending direction of the body of rod
It is equal, to improve the consistency of overlay film frame 10.Certainly, in other embodiments, the different bodies of rod 112 are covered with secondary diaphragm
220 part can also be not completely equivalent along the length W of 112 extending direction of the body of rod.
It is understood that the body of rod 112 can be linear type.It will also be appreciated that the body of rod 112 can also be non-rectilinear
Type, for example, part or all of the body of rod 112 is serrated.
It should be noted that in certain embodiments, the width of 220 each section of secondary diaphragm can also be not completely equivalent,
For example, the edge of secondary diaphragm 220 is serrated.
Please continue to refer to Fig. 5, it is covered with secondary diaphragm 220 at least three bodies of rod 112 of each wave circle 110, to improve
The bond strength of bare bracket 100 and overlay film 200 avoids bare bracket 100 from falling off from overlay film 200.Specific in the present embodiment, wave
Secondary diaphragm 220 is all covered on all bodies of rod 112 of circle 110.Certainly, in other embodiments, before guaranteeing stability
It puts, secondary diaphragm 220 can also only cover the part body of rod 112 on wave circle 110.
Please continue to refer to Fig. 5, secondary diaphragm 220 be it is a plurality of, at least one secondary diaphragm 220 at least covers two wave circles
110, to increase the contact area of secondary diaphragm 220 Yu primary diaphragm 210, increase the knot of secondary diaphragm 220 and primary diaphragm 210
Intensity is closed, the quantity of secondary diaphragm 220 can also be reduced, improves production efficiency.Further, at least one secondary diaphragm
All wave circles 110 of 220 covering bare brackets 100, that is, secondary diaphragm 220 extends since the body of rod 112 of first wave circle 110
To the body of rod 112 of the last one wave circle 110, secondary diaphragm covering by way of all wave circles 110 the body of rod 112, in this way, the second film
The region that piece 220 covers is longer, can increase the bond strength of the secondary diaphragm 220 of primary diaphragm 210, reduces secondary diaphragm
220 there is the probability loosened, but also can reduce the quantity of secondary diaphragm 220 under the same terms, reduce coating technique difficulty,
Improve production efficiency.
It is understood that each secondary diaphragm 220 can also when arranging irregular between the body of rod 112 of wave circle 110
Only to cover a body of rod 112 of a wave circle 110.It will also be appreciated that meet secondary diaphragm 220 and the body of rod 112 it
Between angle requirement under, and when secondary diaphragm 220 does not cover wave crest 111 and trough 113, secondary diaphragm 220 can as far as possible across
More more wave circles 110, to improve the bond strength of secondary diaphragm 220.Specifically, when secondary diaphragm 220 is from a wave circle 110
The body of rod 112 and overlay film frame 10 axial direction extension in a certain angle when, this side up, if secondary diaphragm 220 needs
When covering the wave crest 111 or trough 113 of another wave circle 110, secondary diaphragm 220 can be when not reaching the wave circle 110 i.e.
Terminate.It will also be appreciated that secondary diaphragm 220 can change and prolong with the arrangement of bare bracket 100 on overlay film frame 10
Direction is stretched to adapt to the body of rod 112 of different extending directions, so that a secondary diaphragm 220 can cover all waves as far as possible
Circle 110.
Further, it is all covered with secondary diaphragm 220 on all bodies of rod 112 of all wave circles 110 of bare bracket 100,
To further increase the stability of overlay film frame 10.Specifically, secondary diaphragm 220 is a plurality of, and the quantity of secondary diaphragm 220 is equal to
The quantity of 110 upper body of rod 112 of wave circle.When overlay film, from the position of one of body of rod 112 of first wave circle 110, by the second film
Piece 210 extends on the body of rod 112 of second wave circle 110 along with axial direction in the direction of suitable angle, turn extends to
Third wave circle 110 completes covering for a secondary diaphragm 220 until extending to the body of rod 112 of the last one wave circle 110 at this time
Then film completes the overlay film of Article 2 secondary diaphragm 220 according still further to same method, so goes down, so that all bodies of rod 112
On be all covered with secondary diaphragm 220.
It should be noted that the quantity of secondary diaphragm 220 can also be less than the quantity of the body of rod 112 on wave circle 110.Specifically
Ground, at least one secondary diaphragm 220 cover at least two bodies of rod 112 of a wave circle 110, that is, at least one secondary diaphragm 220 tool
There are two different extending directions.For example, referring to Fig. 7, secondary diaphragm 220 the wave circle 110 of tipping the body of rod 112
Afterwards, it turns back to cover the body of rod 112 adjacent thereto, that is, secondary diaphragm 220 is covered from a direction to the wave circle 110 of end
After the body of rod 112, around 112 bending of the body of rod so that one end of secondary diaphragm 220 passed through from the inner surface of the body of rod 112 and from
The body of rod 112 adjacent with the body of rod 112 is pierced by, then starts the covering of the body of rod 112 on another direction.In the present embodiment,
Secondary diaphragm 220 can realize all bodies of rod 112 for uninterruptedly covering all wave circles 110 in a manner of turning back, that is, pass through one
The covering of all bodies of rod 112 on bare bracket 100 can be realized in secondary diaphragm 220, to be further simplified coating process, improves life
Produce efficiency.Certainly, secondary diaphragm 220 can also only in portion by way of turning back overlay film, for example, secondary diaphragm 220
Only end wave circle 110 position by way of turning back overlay film, in this way, secondary diaphragm 220 can only be equal to wave circle 110 on
The covering of all bodies of rod 112 also may be implemented in the half of body of rod quantity.
Referring to Fig. 5, being covered with a secondary diaphragm 220 on each body of rod 112 of wave circle 110, and each secondary diaphragm
All wave circles 110 of 220 coverings.Preferably, secondary diaphragm 220, which encloses, sets to form multiple parallelogram mesh, secondary diaphragm 220
Between be connected with each other, bond strength is larger, reduce the probability that gets loose of overlay film 200, and even if secondary diaphragm 220 certain
It is local surprisingly to get loose, it is more difficult in this way that the de- of whole secondary diaphragm 220 occurs due to being connected with each other between secondary diaphragm 220
It falls, further increases the stability of overlay film frame 10.It sets to form multiple networks it is highly preferred that secondary diaphragm 220 encloses, it is each
The area of network is equal, to improve the consistency of overlay film 200.Specifically in the present embodiment, from the first of bare bracket 100
One body of rod 112 of a wave circle 110 starts the overlay film of the secondary diaphragm 220 in a direction, and wherein secondary diaphragm 220 is with substantially vertical
Direction be inclined cross to the corresponding body of rod 112 of adjacent wave circle 110, until bare bracket 10 the last one wave circle 110, complete first
After the overlay film of secondary diaphragm 220, Article 2 since the body of rod 112 of first wave circle 110 waveform adjacent with the body of rod 112
The overlay film of two diaphragms 220, the direction of Article 2 secondary diaphragm 220 is parallel with the direction of first secondary diaphragm 220, so until
Complete the covering of all secondary diaphragms 220 on a direction, then on another body of rod 112 of first wave circle 110 with its
The passed through body of rod 112 is covered in generally perpendicular direction, completes all second films parallel with the direction in the same way
The overlay film of piece 220.
In the present embodiment, the end of overlay film frame 10 is also provided with extension 130, and extension 130 is two, and two
A extension 130 is located at the both ends of overlay film frame 10.Extension 130 include extend bare bracket (being blocked, not shown) and
Be set to extend bare bracket on extension overlay film, extend overlay film include third diaphragm (being blocked, not shown) and with third diaphragm
4th diaphragm 131 (being blocked, not shown) of fitting, third diaphragm, which is set to, extends bare bracket close to the table of primary diaphragm 210
Face, the 4th diaphragm 131, which is set to, extends surface of the bare bracket far from third diaphragm.Specifically, extending bare bracket can be with overlay film branch
The structure of the bare bracket 100 of frame 10 is identical.Third diaphragm can be an integral molding structure with primary diaphragm, that is, primary diaphragm and
Three diaphragms are an entirety, that is to say, that a film covers overlay film frame 10 and extension 20 simultaneously.4th diaphragm 131 can be
Extension bare bracket is completely covered in tubular, the 4th diaphragm 131, i.e. extension bare bracket is wrapped by third diaphragm and the 4th diaphragm 131 completely
It wraps.
Above-mentioned overlay film frame 10, it is under equal conditions, i.e., naked compared with the strip overlay film frame of circumferentially overlay film
When bracket is identical, secondary diaphragm of same size, the axial direction of exposed region is long at the wave crest 111 and/or trough 113 of wave circle 110
Spend it is larger so that movably apart from larger between wave circle 110, so as to improve overlay film branch under conditions of guaranteeing stability
The flexibility of frame 10.Moreover, each secondary diaphragm 220 can extend over whole wave circles 110, each secondary diaphragm 220
Length can be larger, can be improved the bond strength of every secondary diaphragm 220 Yu primary diaphragm 210, improve overlay film frame 10
Stability, while the quantity of secondary diaphragm 220 can also be reduced, reduce overlay film difficulty, improve production efficiency.In addition, different
It can also be connected with each other between the secondary diaphragm 220 in direction, can be further improved the combination of secondary diaphragm 220 and wave circle 110
Intensity improves the stability of overlay film frame 10.
Embodiment 2
Referring to Fig. 8, unlike the first embodiment, the second film of the overlay film frame 10a of the utility model second embodiment
The shape of piece 220a is in W type.Specifically, covering of the secondary diaphragm 220a in first body of rod 112a for completing a wave circle 110a
Afterwards, bending adapts it to the covering of wave circle 110a body of rod 112a adjacent thereto to change direction, in the same manner,
To cover all body of rod 112a on wave circle 110a.In the present embodiment, a wave circle 110a is by a secondary diaphragm 220a
The both ends head and the tail of covering, secondary diaphragm 220a connect.
Certainly, in other embodiments, a wave circle 110a can also be by a plurality of secondary diaphragm 220a, a secondary diaphragm
220a only covers the part body of rod 112a of wave circle 110a.
Above-mentioned overlay film frame 10a, compared with strip overlay film frame in the circumferential direction, under equal conditions, i.e. bare bracket
When identical, secondary diaphragm of same size, the axial length of exposed region at the wave crest 111a and/or trough 113a of wave circle 110a
It is larger, so that movably apart from larger between wave circle 110a, so as to improve overlay film frame under conditions of guaranteeing stability
The flexibility of 10a.
Embodiment 3
Referring to Fig. 9, unlike the first embodiment, the overlay film frame 10b in the utility model 3rd embodiment, naked branch
Frame 100b is formed using NiTi pipe through cutting.It specifically, include multiple between axial direction also referring to Figure 10, bare bracket 100b
Portion between the wave circle 110b of arrangement, wave circle 110b is connected by connecting rod 120.The structure of secondary diaphragm 220b can
Referring to the secondary diaphragm 220 of embodiment 1.
It should be noted that the structure of the bare bracket in the utility model is not limited to this.Meet overlay film branch in bare bracket
Under conditions of the requirement of frame, bare bracket can also be replaced with other structures.
Overlay film frame in above-described embodiment can apply to the position more demanding to bracket flexibility, for example, aorta
The position that chamber is connect with branch vessel.Figure 11 is please referred to, overlay film frame 10,10a, 10b can be used as a part of chimney bracket 20
It is implanted into lumen of artery together with aorta tectorial membrane stent 40.Specifically, the middle part of the inner stent of chimney bracket 20 is using above-mentioned
The overlay film frame of embodiment, so that the middle part of chimney bracket 20 flexibility with higher thereby may be ensured that chimney branch
Frame 20 can preferably adapt to the transition of aorta to branch vessel.Figure 12 is please referred to, overlay film frame 10,10a, 10b can also make
It is implanted in the window of aorta tectorial membrane stent 40 for a part of windowing stent 30.Specifically, the internal layer branch of windowing stent 30
The middle part of frame uses the overlay film frame of above-described embodiment, so that the middle part of windowing stent 30 flexibility with higher, from
And can guarantee that windowing stent 30 can preferably comply with complicated vascular anatomy form, discounting or narrow does not occur.
Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed,
But it cannot be understood as the limitations to utility model patent range.It should be pointed out that for the common skill of this field
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
The protection scope of the utility model.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.
Claims (14)
1. a kind of overlay film frame, including bare bracket and the overlay film being connect with the bare bracket, which is characterized in that the overlay film includes
Primary diaphragm and the secondary diaphragm being bonded with the primary diaphragm, the primary diaphragm covers the surface of the bare bracket, described
Secondary diaphragm covers surface of the bare bracket far from the primary diaphragm, and the bare bracket includes multiple axially distributed waves
Circle, the wave circle include multiple wave crests, multiple troughs and multiple bodies of rod for connecting the adjacent wave crest and the trough, and described the
The body of rod of two membrane covereds at least one, and expose the wave crest and the trough, and the secondary diaphragm is capped
Extending direction at the body of rod position and the angle between the axial direction of the overlay film frame are not more than 75 °.
2. overlay film frame according to claim 1, which is characterized in that the body of rod extending direction and be covered on the body of rod
On the angle of extending direction of the secondary diaphragm be 90 ± 20 °.
3. overlay film frame according to claim 1, which is characterized in that at least three bodies of rod of each wave circle
It is covered with the secondary diaphragm.
4. overlay film frame according to claim 3, which is characterized in that the body of rod of the wave circle is all covered with described
Two diaphragms.
5. overlay film frame according to claim 1, which is characterized in that the secondary diaphragm be it is a plurality of, described at least one
Secondary diaphragm at least covers two wave circles.
6. overlay film frame according to claim 5, which is characterized in that at least one secondary diaphragm covers the naked branch
All wave circles of frame.
7. overlay film frame according to claim 1, which is characterized in that the secondary diaphragm be it is a plurality of, described at least one
Secondary diaphragm covers at least two bodies of rod of a wave circle.
8. overlay film frame according to claim 7, which is characterized in that the secondary diaphragm is covering described in the wave circle
After the body of rod, turn back to cover the body of rod adjacent thereto.
9. overlay film frame according to claim 1, which is characterized in that the width of described secondary diaphragm each section is equal,
And the secondary diaphragm is located at the middle part of the body of rod.
10. overlay film frame according to claim 9, which is characterized in that the body of rod is covered with the portion of the secondary diaphragm
Point along body of rod extending direction length not less than the body of rod along the body of rod extending direction length 1/5.
11. overlay film frame according to claim 1, which is characterized in that the secondary diaphragm, which encloses, to be set to form multiple parallel four
Side shape grid.
12. any overlay film frame according to claim 1~11, which is characterized in that the body of rod of each wave circle
Quantity is equal.
13. overlay film frame according to claim 12, which is characterized in that multiple wave circles form net in the axial direction
Shape structure, and the wave crest of the two neighboring wave circle is oppositely arranged with the trough, and mutually hanging buckle forms interlocking structure.
14. overlay film frame according to claim 13, which is characterized in that in the wave circle of two mutual hanging buckles, pass through
The extending direction of secondary diaphragm on the body of rod of the wave circle of the crest location hanging buckle is roughly parallel to another described
The extending direction of the body of rod adjacent and ipsilateral with the body of rod described in this in wave circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721090738.7U CN208910580U (en) | 2017-08-28 | 2017-08-28 | Overlay film frame |
Applications Claiming Priority (1)
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| CN201721090738.7U CN208910580U (en) | 2017-08-28 | 2017-08-28 | Overlay film frame |
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| CN208910580U true CN208910580U (en) | 2019-05-31 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109419568A (en) * | 2017-08-28 | 2019-03-05 | 先健科技(深圳)有限公司 | Overlay film frame |
| CN113827370A (en) * | 2021-10-18 | 2021-12-24 | 广东迈迪健通科技有限公司 | Covered stent |
-
2017
- 2017-08-28 CN CN201721090738.7U patent/CN208910580U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109419568A (en) * | 2017-08-28 | 2019-03-05 | 先健科技(深圳)有限公司 | Overlay film frame |
| CN109419568B (en) * | 2017-08-28 | 2023-09-19 | 先健科技(深圳)有限公司 | Tectorial membrane support |
| CN113827370A (en) * | 2021-10-18 | 2021-12-24 | 广东迈迪健通科技有限公司 | Covered stent |
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