CN205458864U - Tubular cavity stent - Google Patents
Tubular cavity stent Download PDFInfo
- Publication number
- CN205458864U CN205458864U CN201521131614.XU CN201521131614U CN205458864U CN 205458864 U CN205458864 U CN 205458864U CN 201521131614 U CN201521131614 U CN 201521131614U CN 205458864 U CN205458864 U CN 205458864U
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- China
- Prior art keywords
- radial
- support structure
- intraluminal stent
- radial support
- path length
- Prior art date
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/04—Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts
- A61F2/06—Blood vessels
- A61F2/07—Stent-grafts
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/04—Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts
- A61F2/06—Blood vessels
- A61F2002/061—Blood vessels provided with means for allowing access to secondary lumens
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2002/821—Ostial stents
Abstract
The utility model discloses a tubular cavity stent, including first body and second body, second body cover is located outside the first body, and at least one end with the surface sealing connection of first body, the second body is including covering first body film partly is at least personally experienced sth. Part of the body and is located the biggest path length of the film body is distinguished and is encircleed the radial bearing structure of second in the biggest path length district, the radial bearing structure of second has radial support performance. The foundation the utility model discloses tubular cavity stent implants the back, can form semi -enclosed clearance between first body and second body, or forms semi -enclosed clearance between second body and lumen wall, and the interior passageway that leaks of filler material shutoff I type can be regarded as to the blood that flows in above -mentioned clearance, avoids blood to flow in tumor body or intermediate layer department.
Description
Technical field
This utility model relates to implanted medical device, particularly relates to a kind of intraluminal stent and intraluminal stent system.
Background technology
Intraluminal stent can be used at present to implement endovascular graft to the lesion region isolating in body lumen, example
As, intraluminal stent can be used to completely cut off artery dissection or aneurysm in the blood vessel.This type of method has operation wound
Hinder in little, art that transfusion volume is few, post-operative recovery is fast and the advantage such as the hospital stays is short, the most progressively replace biography
The open procedures of system.Intraluminal stent is generally of expanded radially ability, utilizes its radial direction support force to be close to blood
Wall of the lumen and be fixed in tube chamber.For preventing support from coming off, support need to have sufficiently large radial direction support force,
And radially support force is the biggest, the rigidity after support radial development is the strongest.But, due to individual variation, pipe
Cavity wall comes in every shape, and lumen wall there is likely to be calcified plaque and changes the pattern of lumen wall,
Having the intraluminal stent of bigger rigidity, to be likely to cause support adherent with tube chamber bad so that support and pathological changes
Cannot completely enclose between wall of the lumen.
For example, with reference to Fig. 1, the speckle 13 on tube chamber 12 inwall can make support 11 and tube chamber 12 inwall
Between there is gap 14, blood flow can flow to tumor chamber or interlayer vacation chamber via this gap 14, produces in I type
Leakage.Or, for opening main body blood vessel and branch vessel simultaneously, can use chimney technology, periscope technology,
Or multiple support assorteds are used by sandwich technique, respectively intraluminal stent is implanted main body blood vessel and branch's blood
Pipe.For example, see Fig. 2, one end of main body rack 15 and branch stent 16 is implanted in tube chamber 12 side by side,
The other end of main body rack 15 connects (not shown) with bigger main body blood vessel, branch stent 16
The other end connects (not shown) with less branch vessel.For guaranteeing that the blood flow flowing into branch vessel leads to
Freely, the radial direction support force of branch stent 16 so can need to be led more than the radial direction support force of main body rack 15
Cause main body rack 15 at implantation side by side and be easier to radial deformation, thus at branch stent 16, main body rack
Forming gap 17 between 15 and tube chamber 12 inwall, thus produce I type internal hemorrhage due to trauma, blood flow can be via this
Gap 17 flows to tumor chamber or interlayer vacation chamber.
This I type internal hemorrhage due to trauma possibly be present in thoracic aorta, ventral aorta or other tube chamber.If blood flow continues to flow into,
Interlayer vacation chamber or aneurysm tumor chamber can be caused to continue to increase, and ultimately result in its serious consequence ruptured,
Make inner cavity insulation Endodontic failure.For the intraluminal stent in endovascular graft, for improving hands
Art effect and healing success rate, avoid support particularly important with the I type internal hemorrhage due to trauma of tube chamber as far as possible.
Utility model content
The technical problems to be solved in the utility model is, for the defect of prior art, it is provided that Yi Zhongke
Avoid the intraluminal stent that internal hemorrhage due to trauma is formed.
This utility model solves its technical problem and be the technical scheme is that and provide a kind of intraluminal stent,
Including the first body and the second body, described second body is sheathed on outside described first body, and at least one
The outer surface with described first body is held to be tightly connected；Described second body includes covering described first body
At least one of thin-film body and be located at the maximum path length district of described thin-film body and around described maximum diameter
Second radial support structure in long district, described second radial support structure has radially support performance.
In the intraluminal stent according to this utility model embodiment, described first body includes at least one edge
Its first radial support structure being circumferentially arranged.
In the intraluminal stent according to this utility model embodiment, under natural deployed condition, in described radial direction
At same position in supporting section, the path length of described second radial support structure is the described first radially support
1.3 times of the path length of structure～3 times.
In the intraluminal stent according to this utility model embodiment, under natural deployed condition, described second footpath
2～30mm are grown up to the footpath of the first radial support structure described in the fineness ratio of supporting construction.
In the intraluminal stent according to this utility model embodiment, the radial direction of described second radial support structure
Deformability is more than the radial deformation capabilities of described first radial support structure.
In the intraluminal stent according to this utility model embodiment, under same radial power effect, described
The path length variable quantity of two radial support structure is more than the path length variable quantity of described first radial support structure；Or
Person, under same radial power effect, the path length rate of change of described second radial support structure is more than described the
The path length rate of change of one radial support structure；Or, become there is same radial rate of change or same radial
During change amount, the radially outward force that described first radial support structure needs needs than described second radial support structure
The radially outward force wanted is big.
In the intraluminal stent according to this utility model embodiment, described second radial support structure is waveform
Ring, under natural deployed condition, arbitrary waveform of described wavy annular thing Breadth Maximum m circumferentially
M≤D/12 or m≤D/13 or m≤D/14 is met with the girth D of the second body at this waveform.
In the intraluminal stent according to this utility model embodiment, described second radial support structure is for including
The network structure of multiple grids, under natural deployed condition, arbitrary described grid Breadth Maximum circumferentially
The girth D of the second body at m1 and this grid meets m1≤D/12 or m1≤D/13 or m1≤D/14.
In the intraluminal stent according to this utility model embodiment, in the part that described thin-film body covers,
Described first body also includes the first overlay film covering the first radial support structure.
In the intraluminal stent according to this utility model embodiment, one end of described thin-film body and described first
Body is tightly connected, and the other end is open；The maximum path length district of described thin-film body is positioned at the port of open one end
Near, or it is positioned at the mid portion of described thin-film body.
In the intraluminal stent according to this utility model embodiment, the two ends of described thin-film body are all with described
One body is tightly connected；The maximum path length district of described thin-film body is positioned at intermediate portion.
After implanting according to the intraluminal stent of this utility model embodiment, can the first body and the second body it
Between form semi-enclosed gap, or between the second body and wall of the lumen, form semi-enclosed gap, flow into
The blood in above-mentioned gap can block I type internal hemorrhage due to trauma passage as packing material, it is to avoid blood flows into tumor body or interlayer
Place.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing:
Fig. 1 is the schematic diagram that in prior art, single intraluminal stent implants after having the tube chamber of speckle；
Fig. 2 is that in prior art, two intraluminal stents coordinate the schematic diagram after implanting tube chamber；
Fig. 3 is based on the structural representation of an example intraluminal stent of this utility model first embodiment；
Fig. 4 is based on axial section after the single intraluminal stent implantation tube chamber of this utility model first embodiment
Face figure；
Fig. 5 is the schematic diagram of an example multi-turn wavy annular thing of the second body in first embodiment；
Fig. 6 is the schematic diagram of the multi-turn wavy annular thing of the second body in another detailed description of the invention；
Fig. 7 is the flat board squeezing and pressing method test schematic diagram according to the intraluminal stent of this utility model the second embodiment；
Fig. 8 is the flat board squeezing and pressing method test schematic diagram according to the intraluminal stent of this utility model the second embodiment；
Fig. 9 is based on the intraluminal stent of this utility model the second embodiment and cuts in the radial direction of natural deployed condition
Face figure；
Figure 10 is the intraluminal stent of Fig. 9 longitudinal section view after radial compression；
Figure 11 is based on the single intraluminal stent of this utility model the second embodiment and implants the tube chamber with speckle
After schematic diagram；
Figure 12 is based on the schematic diagram of the intraluminal stent of this utility model the 3rd embodiment；
Figure 13 A is the schematic diagram of a concrete structure of the intraluminal stent of Figure 12；
Figure 13 B is the axial, cross-sectional view after the intraluminal stent in Figure 13 A implants tube chamber；
Figure 14 is based on the schematic diagram of the intraluminal stent of this utility model the 4th embodiment；
Figure 15 is based on the schematic diagram of an exemplary construction of the intraluminal stent of this utility model the 5th embodiment；
Figure 16 is based on the signal of another exemplary construction of the intraluminal stent of this utility model the 5th embodiment
Figure；
Figure 17 is the cancellated schematic diagram of the cutting of the second body in Figure 16；
Figure 18 is the partial enlarged drawing of Figure 17；
Figure 19 is based on the schematic diagram of the intraluminal stent system of this utility model sixth embodiment；
Figure 20 is the near-end longitudinal section view of intraluminal stent system in Figure 19；
Figure 21 is based on the signal of intraluminal stent another exemplary construction of system of this utility model sixth embodiment
Figure；
Figure 22 is based on the schematic diagram of this utility model the 7th embodiment intraluminal stent system again；
Figure 23 is the longitudinal section view after the intraluminal stent system in Figure 22 is implanted near renal artery；
Figure 24 is the longitudinal section view after the intraluminal stent system in Figure 22 is implanted near iliac artery.
Detailed description of the invention
In order to technical characteristic of the present utility model, purpose and effect are more clearly understood from, existing comparison
Accompanying drawing describes detailed description of the invention of the present utility model in detail.
First embodiment
See Fig. 3, include the first body 21 He according to the intraluminal stent 2 of this utility model first embodiment
Second body 22, the second body 22 is sheathed on outside the first body 21 and covers the first body 21 at least
A part, one end of the second body 22 is tightly connected with the outer surface of the first body 21.
Specifically, the first body 21 has expanded radially ability, can be compressed also under external force
After external force is cancelled self-expanding or by mechanical swelling (such as balloon expandable expansion) recover to original shape
And keep original shape, wall of the lumen can be close to by its radial direction support force and be fixed on after thus implanting tube chamber
In tube chamber.First body 21 includes the first radial support structure 211 being located on whole body, such as may be used
Memory alloy material (such as Nitinol) is used to prepare this first radial support structure 211 so that it is to have
Self-expanding ability.This first radial support structure 211 can be the multi-turn wavy annular thing arranged vertically,
Can also be the network structure formed by metal wire knitted, it is also possible to be by cutting that cuts in metallic pipe is formed
Cutting network structure, those of ordinary skill in the art can select suitable first radially to support knot as required
Structure 211, repeats the most one by one.And, this first body 21 is not being covered by the second body 22
The region of lid includes the first overlay film 212, and this first overlay film 212 can be PET film or PTFE film, can
The first radial support structure 211 is covered by stitching or hot melting way.
Second body 22 has expanded radially ability, can be compressed and remove in external force under external force
After pin self-expanding or by mechanical swelling (such as balloon expandable expansion) recover to original shape and holding at the beginning of
Beginning shape, can paste wall of the lumen by its radial direction support force after thus implanting tube chamber.Second body 22 includes
Thin-film body 222 and be located at the maximum path length district L of thin-film body 222 and around this maximum path length district L's
Second radial support structure 221, the second body 22 has above-mentioned footpath by the second radial support structure 221
To swelliong power, it is possible to the most radially support performance or radially support force.Such as, memory can be used to close
Gold copper-base alloy (such as Nitinol) prepares this second radial support structure 221 so that it is have self-expanding ability.
This second radial support structure 221 can be the multi-turn wavy annular thing arranged vertically, it is also possible to be by
The network structure that metal wire knitted is formed, it is also possible to be the cutting network structure formed by cuts in metallic pipe,
Those of ordinary skill in the art can select suitable second radial support structure 221 as required, the most not
Repeat the most one by one.Thin-film body 222 can be PET film or PTFE film, can be by sewing up or hot melting way
Cover the second radial support structure 221.It is to be understood that under the same terms, the second radial support structure
Radially support force is more than the radial direction support force of thin-film body self.
One end of second body 22 can be by thin-film body 222 and the first overlay film 212 heat with the first body 21
Molten realization is tightly connected, it is possible to realize sealing by being sewn onto by thin-film body 222 on first overlay film 212
Connect.Those of ordinary skill in the art can select suitable sealing means as required, the most superfluous
State.
In example intraluminal stent shown in Fig. 3, one end of thin-film body 222 is tightly connected with the first body 21,
The other end is open, and the maximum path length district L of thin-film body 222 is positioned at open one end near ports, certainly,
Maximum path length district L can also be positioned at the mid portion of thin-film body 222.
Seeing Fig. 4, one end of the second body 22 is the open mouth of pipe, because of the second radial support structure 221
There is radially support force or radially support performance, and this second radial support structure 221 is located at thin-film body 222
Maximum path length district in, therefore implant after the second body 22 (i.e. thin-film body 222) can attach in tube chamber 12
Wall, and between the second body 22 and the first body 21, form effective clearance 20, when blood proximally 23
When flowing into intraluminal stent 2, blood flows simultaneously into gap 20, because the other end mouth of pipe of the second body 22 is closed,
Then flow into the blood in this gap 20 and can play sealing filling effect, thus reduce and even avoid blood flow to flow into
Form gap between second body 22 and lumen wall, cut off passage or the opening forming I type internal hemorrhage due to trauma.And
And this part blood direct thrombosis of meeting in this gap 20 so that seal filling effect more preferably.Close at this
During envelope, it is not necessary to add other sealing in advance in intraluminal stent 2 or after implantation intraluminal stent 2
Or packing material, only need the blood flowed in normal blood circulation can realize sealing, will not additionally increase
The biological risks that sealing or packing material bring.
In the concrete structure of above-mentioned intraluminal stent 2, under natural deployed condition, above-mentioned thin-film body 222
At the same position of maximum path length district L (in cross section, the most same footpath), the footpath of the second radial support structure 221
Length is 1.3 times～3 times of the path length of the first radial support structure 211, thus, herein, the first body
21 and second form clearance space between body 22.
Or, at the same position of the maximum path length district L of above-mentioned thin-film body 222, second radially supports knot
The footpath of fineness ratio first radial support structure 211 of structure 221 grows up 2～30mm, thus, herein,
Clearance space is formed between first body 21 and the second body 22.Specifically, when the footpath of the first body 21
When a length of 20～48mm, corresponding intraluminal stent is generally used for aortic position, including ascending aorta,
Aortic arch, descending thoracic aorta and ventral aorta, now the second radial support structure at same position
The footpath of fineness ratio first radial support structure 211 of 221 grows up 2～20mm；When the first body 21 path length
When being 4～20mm, corresponding intraluminal stent is generally used for branch vessel, as bow part, renal artery,
Iliac arterys etc., now the fineness ratio first of the second radial support structure 221 at same position radially supports
The footpath of structure 211 grows up 3～30mm.
Because the second body has expanded radially ability, can be compressed and be removed in external force under external force
After pin self-expanding or by mechanical swelling (such as balloon expandable expansion) recover to original shape and holding at the beginning of
Beginning shape, therefore path length difference or fineness ratio between the first body and the second body can be in the larger context
Value.If desired path length difference or path length between the first body and the second body are smaller, and such as path length is poor
Little to 2mm or 3mm or 4mm, because being respectively provided with expanded radially ability between the first body and the second body
Without being attached onto each other, still there is clearance space, and clearance space can be kept unobstructed；If desired
Path length difference or fineness ratio between first body and the second body are relatively big, and such as path length difference is more than 10mm, the
Two bodys remain to effectively be close to wall of the lumen, without overturning under the impact of blood flow.Therefore, foundation
The intraluminal stent of this utility model embodiment is applied widely, and the stability that closure is revealed is high.
In a detailed description of the invention of the second radial support structure 221, seeing Fig. 5, second radially supports
Structure 221 includes at least one circle wavy annular thing 2221, shows four circle wavy annular things 2221 in figure,
But it is used only as citing, is not to restriction of the present utility model, and those skilled in the art can basis
Need to select appropriate number of wavy annular thing 2221.This wavy annular thing 2221 can be by tinsel coiling
Become, such as, memorial alloy (including Nitinol) filament winding can be used to make predetermined waveform and form, optional
String diameter (i.e. diameter) is the tinsel of 0.05mm～0.4mm, and this waveform can be Z-shaped ripple, U-shaped ripple
Or sine wave etc..Or, it is possible to use cuts in metallic pipe to form above-mentioned wavy annular thing, form corrugated gasket
The line footpath of the metallic rod of shape thing is 0.05mm～0.4mm.Shown in figure for the second radial support structure 221
The schematic diagram launched vertically, axially expanded width D the most herein is this second radial support structure
The girth of the second body 22 at 221.
Separately, according to the tinsel of identical string diameter, then the path length of the second radial support structure 221 is the biggest,
The equivalent string diameter of this second radial support structure 221 is the least, and vice versa.It can be seen, may be used
The effect of string diameter is reached to reduce by increasing the path length of the second radial support structure 221.In other condition
In the case of identical, the equivalent string diameter of radial support structure is the least, then the radial direction of this radial support structure becomes
Shape ability is the biggest.
Such as, in a detailed description of the invention, if the first radial support structure and the second radial support structure
There is identical waveform configuration and use the tinsel of identical string diameter to make, then the second radial support structure
Its equivalence string diameter equivalent string diameter less than the first radial support structure is made because it has bigger path length, thus
Make the radial deformation capabilities radial deformation energy more than the first radial support structure of the second radial support structure
Power.
Specifically, when footpath a length of 4～20mm of the second radial support structure 221, form the silk of waveform
Footpath is between 0.05mm～0.32mm；When footpath a length of 20～50mm of the second radial support structure 221,
The string diameter of coiling waveform is between 0.1mm～0.35mm；When the footpath of the second radial support structure 221 is a length of
When 50～80mm, the string diameter of coiling waveform is between 0.2mm～0.4mm.Metal in the range of above-mentioned string diameter
Silk has higher bending compliance, its coiling the wavy annular thing formed has preferable radial deformation
Ability.
Any one circle wavy annular thing 2221 includes multiple waveform, is connected to each other between adjacent waveform.Appoint
One waveform includes two support members interconnected, and the two support member is adjacent one another are and forms an angle, this ripple
The girth of the second body 22 that shape Breadth Maximum m circumferentially is corresponding with the wavy annular thing at this waveform place
D meets m≤D/12, and m is in the range of 1.5～8mm.Specifically, m can be adjacent
The spacing of circumference relatively maximum between two support members.
From the above, it can be seen that in a circumference radial support structure, such as one encloses the waveform being circumferentially arranged
In ring, the maximum circumference spacing between two adjacent support members meets m≤D/12, the most also may be used
To be m≤D/13 or m≤D/14.This maximum circumference spacing (i.e. waveform Breadth Maximum circumferentially) though
Enough radial direction support forces so cannot be provided to be fixed in tube chamber, but be also sufficient so that radially support knot
Structure pastes wall of the lumen, and it is tiny because maximum circumference spacing is less, radial support structure can be embedded
In gap, thus paste the lumen wall of various pattern and avoid the formation of internal hemorrhage due to trauma.And intraluminal stent is fixed
Radial direction support force required in tube chamber can be provided by the first radial support structure in the first body.
Comply with the deformability of lumen wall for improving the second radial support structure further, can arrange above-mentioned
The waveform height of wavy annular thing is between 2～8mm.Specifically, when the footpath of the second radial support structure 221
When a length of 4～20mm, waveform height is between 2mm～6mm；When the second radial support structure 221
During footpath a length of 20～50mm, the string diameter of coiling waveform is between 3mm～7mm；When second radially supports knot
During footpath a length of 50～80mm of structure 221, the string diameter of coiling waveform is between 4mm～8mm.Waveform height
The least, comply with the ability that the pattern of lumen wall deforms the strongest.
At least one waveform of wavy annular thing 2221 has filleted corner 2222, and filleted corner 2222 is circumferentially
Breadth Maximum n meet n≤1.5mm.N value is the least, and the second body 22 complies with the deformation of lumen wall
Ability is the strongest, then the ability filling gap is the strongest, and the ability therefore blocking internal hemorrhage due to trauma is the strongest.
Second radial support structure 221 can include the wavy annular thing 2221 that multi-turn is arranged vertically, multi-turn
Arrangement mode between wavy annular thing 2221 has multiple, and for example, with reference to Fig. 5, second radially supports knot
Structure 221 at least includes two adjacent circle wavy annular things 2221, and both are spaced apart from each other and overlapping without region,
Have between arbitrary crest of i.e. one circle wavy annular thing with arbitrary trough of another adjacent circle wavy annular thing
Having axial spacing, wherein minimum axial spacing is smaller than 3mm.For avoiding the second body 22 cripetura, also
Connecting rod 2223 can be set, connect multiple wavy annular thing 2221.Again for example, with reference to Fig. 6, the second footpath
Two adjacent circle wavy annular things 2221, a wherein circle wavy annular thing is at least included to supporting construction 221
Waveform embed in the waveform of another circle wavy annular thing adjacent, arbitrary ripple of i.e. one circle wavy annular thing
Axial spacing between peak with an immediate crest in another adjacent circle wavy annular thing is less than this circle
The waveform height of wavy annular thing.As a example by wavy annular thing 2221 in scheming, it is embedded into upper phase
In another adjacent wavy annular thing, the depth H 1 of embedding meets H1≤H/3, and wherein H is this embedding
The wave height (i.e. axial spacing between crest and trough) of wavy annular thing 2221 self.
Second embodiment
On the basis of first embodiment, the intraluminal stent of the second embodiment is further at above-mentioned thin-film body
In the maximum path length district L of 222, the radial deformation capabilities of the second radial support structure 221 is more than first radially
The radial deformation capabilities of supporting construction 211, i.e. (include radial effect under identical radial force effect
Power size and Orientation and action time are the most identical), radially the first radial support structure in supporting section
The path length variable quantity of 211 is less than the path length variable quantity of the second radial support structure 221 at same position；Or
Person, (includes that radial forces size and Orientation and action time are equal under used by identical radial force
Identical), radially in supporting section, the path length rate of change of the first radial support structure 211 is less than at same position
The path length rate of change of the second radial support structure 221, this rate of change is path length variable quantity and original path length
Ratio.
Under identical radial force effect, path length variable quantity is the biggest or path length rate of change is the biggest, then show footpath
The strongest to the radial deformation capabilities of supporting construction, and radially support performance is the poorest, vice versa.Or,
In above-mentioned maximum path length district L, when there is same radial rate of change or same radial variable quantity, first
The radially outward force that the radially outward force that radial support structure 211 needs needs than the second radial support structure 221
Greatly.Required radial force is the biggest, then show that radial deformation capabilities is the most weak, and radially support performance is the strongest, instead
As the same.
See Fig. 7, flat board squeezing and pressing method can be used, i.e. use two pieces of flat boards being parallel to each other 18 radially propping up
In support section, the tangential direction of radially supporting section of circumference clamps this body 21 and 22, protects all the time in test process
It is parallel for holding two pieces of flat boards, applies identical radial force F and test radially in supporting section the on flat board 18
One radial support structure 211 and the path length variable quantity △ R of the second radial support structure 221 or path length rate of change
One diameter parallel of the body 21 and 22 at △ R/R, the direction of this radial force F and extruding.Or, can
Sample above-mentioned flat board squeezing and pressing method, by the first radial support structure 211 in radial direction supporting section or radially support
The second radial support structure 221 in Duan was surveyed when original size R (Fig. 7) is compressed to R/2 (Fig. 8)
Radial force F1 of the required applying obtained evaluates radially support force or radially support performance, this evaluation result
Be equivalent by the evaluation result of path length variable quantity or path length rate of change.Wherein, at radial effect bar
In the case of part identical (action time of radial force is the most identical with model of action), if body is from original chi
The force value that very little R is compressed to required radial force F1 applied of R/2 is the least, then show that the radial direction of body radially becomes
Shape ability is the strongest, and radially support performance is the poorest, and vice versa.
Above-mentioned flat board squeezing and pressing method is only a kind of example method of testing, is not to restriction of the present utility model,
Those of ordinary skill in the art can use the method being arbitrarily suitable for carry out and the survey of flat board squeezing and pressing method equivalence
Examination, such as, also uniformly can apply radial forces in the circumference of tube chamber and test, specifically, and can
Use the radial direction support force tester of Machine Solution Inc (MSI) company RX550-100 model.
In a detailed description of the invention of the present utility model, under used by identical radial force, radially support
During in Duan, the path length variable quantity of the second radial support structure 221 is this radial direction supporting section, first radially supports knot
1.05 times～10 times of the path length variable quantity of structure 211, can be 2 times～5 times further.Or,
Under identical radial force is used, the radially path length rate of change of the second radial support structure 221 in supporting section
It is 1.05 times～10 times of the path length rate of change of the first radial support structure 211 in this radial direction supporting section, enters
One step can be 2 times～5 times.Or, under same test condition, the first radial support structure 211 from
Original size R when being compressed to R/2 the radial force of required applying be that the second radial support structure 221 is from former
Beginning size R is compressed to 1.05 times～10 times of the radial force of required applying during R/2, can be further
2 times～5 times.
Compared with the first radial support structure 211, if the radial deformation energy of the second radial support structure 221
Power is excessive, then radially support performance is the most weak, will cause the second radial support structure cannot be complete in release process
Full radial development, thus fold or the phenomenon subsided occur, the therefore footpath of the second radial support structure 221
10 times of radial deformation capabilities of the first radial support structure 211 it are typically not greater than to deformability.Certainly,
If the radial deformation capabilities of the second radial support structure 221 becomes with the radial direction of the first radial support structure 211
Shape difference of ability is little, then it is possible to cause the formation of internal hemorrhage due to trauma after the second body 22 is implanted.Therefore,
The radial deformation capabilities of two radial support structure 221 generally becomes than the radial direction of the first radial support structure 211
1.05 times of shape ability are big.Specifically, the radial deformation capabilities of the second radial support structure 221 is first
2～5 times of the radial deformation capabilities of radial support structure 211, such as 3 times, 4 times etc..
It is to be understood that radial deformation capabilities described herein be body when by outer radial active force,
Time such as after the first body 21 or the implantation of the second body 22 by tube chamber radial compression, body is to outside this
The radial reaction force that radial forces produces.If under identical outer radial active force, body produces
Radial reaction force the biggest, then show that this body has more weak radial deformation capabilities and has bigger
Radial direction support force or preferably radially support performance, vice versa.Such as when the first radial support structure
211 and second radial support structure 221 when implanting same position by same tube chamber radial compression, the first footpath
The radial reaction force produced to supporting construction 211 is relatively big, the footpath that the second radial support structure 221 produces
Less to counteracting force, therefore the first radial support structure 211 is compared the second body 22 and is had bigger footpath
To support force or have more preferably radially support performance and there is more weak radial deformation capabilities.And if managing
Body self does not have aforementioned expanded radially ability, the most only has overlay film and without the pipe of radial support structure
Body, can be compressed when by outer radial active force, but can not be recovered to initially after external force is cancelled
Shape is also maintained at original shape, then the radial direction retroaction that this outer radial active force is produced by this kind of body
Power can be ignored substantially, and the body for this structure compares radial direction support force or radial direction support performance is not
Significant.
Separately, the second radial support structure 221 is circumferentially arranged, further, and the second radial support structure
221 are arranged continuously in a circumferential, when the second radial support structure 221 somewhere is by radial forces after implantation
When deforming, this deformation or stress can circumferentially be transmitted by the second radial support structure 221, thus real
Existing second body is complied with the pattern of wall of the lumen and is close to wall of the lumen, and this second radial support structure 221 energy
Enough actively filling small gap about, it is to avoid form blood flow leakage channel between the second body and wall of the lumen.
Understand, after above-mentioned intraluminal stent 2 implants body lumen, in the footpath it described based on described above
In supporting section, intraluminal stent 2 includes the first body 21 and covers the second body 22 of the first body 21,
The radial deformation capabilities of the first body 21 is more weak, can be close to wall of the lumen and make whole intraluminal stent be fixed on pipe
In chamber, it is to avoid be shifted over or come off from tube chamber；And the second body 22 radially supports knot because having second
Structure 221 and there is radially support force, can expanded radially and paste wall of the lumen, will not be at wall of the lumen and second
Gap is formed not because of radial direction support force between body 22.Further, become because of the radial direction of the second body 22
Shape ability is better than the radial deformation capabilities of the first body 21, and it is simultaneously implanted same with the first body 21
During tube chamber position, the second body 22 is prone to comply with the pattern deformation of lumen wall, thus avoids second
Form gap between body 22 and lumen wall, cut off passage or the opening forming I type internal hemorrhage due to trauma.
For example, with reference to Fig. 9, in its natural state, i.e. it is not affected by under outer radial power or outer radial extruding,
First body 21 (the i.e. first radial support structure) and the second body 22 (the i.e. second radial support structure)
All can expanded radially launch.See Figure 10, under being extruded by outer radial power or outer radial, such as
When being placed in the blood vessel a part that need to treat, the first body 21 will keep radially under the radial compression of blood vessel wall
Pattern is basically unchanged, and intraluminal stent 2 can be avoided to shift or come off；Second body 22 is by the footpath at this blood vessel
Under extruding, comply with deformation and keep expanded radially to launch simultaneously, without occurring radial direction to cave in, subside,
The deformation such as upset.
See Figure 11, if above-mentioned intraluminal stent 2 is implanted to have in the tube chamber of speckle 13, by tube chamber
Under the radial force produced or radial compression, the first body 21 keeps radially pattern to be basically unchanged, and will not shift
Or come off, and keep channel of blood flow unobstructed；Second body 22 can comply with deformation, simultaneously at speckle 13
Guarantee to paste lumen wall and plaque surface yet by its expanded radially ability, thus fill the first body
While 21 gaps formed with lumen wall, will not be in the second body 22 and lumen wall and plaque surface
Between form gap again, cut off and formed the passage of I type internal hemorrhage due to trauma or opening, it is to avoid blood has flowed into tumor body or folder
At layer 18.
3rd embodiment
Seeing Figure 12, the difference with the intraluminal stent of first embodiment is, according to the pipe of the 3rd embodiment
Second body 22 of chamber support 2 seals even near the mouth of pipe of near-end 23 and the outer surface of the first body 21
Connecing, formed and close the mouth of pipe, the second body 22 is open near the mouth of pipe of far-end 24.The second above-mentioned body
Near 22 near-ends 23 being respectively positioned on the first body 21, but those skilled in the art is it is to be understood that scheme
Showing and be used only as citing, be not to restriction of the present utility model, those skilled in the art can be based on this reality
With novel teaching, the second body 22 is located near the far-end 24 of the first body 21.
Seeing Figure 13 A and 13B, specifically, the second body 22 can farther include straight length 221a, cone
Pipeline section 222a and linkage section 223a, linkage section 223a and the first body 21 are tightly connected, Taper Pipe section
222a connects linkage section 223a and straight length 221a, and the maximum path length district of the second body is positioned at straight length 221a
In, in straight length 221a, the most at least it is provided with the second radial support structure (not shown).
After implantation, the second body 22 complies with the inner wall deformation of tube chamber 12, linkage section 223a and Taper Pipe section 222a
Because of path length relatively small may and tube chamber 12 inwall between formed gap 20, the footpath appearance of straight length 221a
To relatively greatly and tube chamber 12 inwall being pasted completely, if at straight length 221a by the second radial support structure
The tube chamber 12 wall somewhere pattern implanted is rough, and straight length 221a can comply with pattern and deform, but straight tube
Other parts of section 221a rely on its expanded radially performance to remain to paste tube chamber 12 inwall.When blood flows into
During intraluminal stent 2, blood flows simultaneously into linkage section 223a and Taper Pipe section 222a may with tube chamber 12 inwall
In the gap 20 formed, or it is also possible in the gap of inflow straight length 221a and the formation of tube chamber 12 inwall
(figure is not shown specifically)；But, the straight length 221a part that paste internal with tube chamber 12 relies on its footpath
To support force, obstruction blood is further flowed into, formed after putting the blood thrombosis stayed in above-mentioned each gap
Seal, thus cut off passage or the opening forming I type internal hemorrhage due to trauma, it is to avoid blood flows into tumor body or interlayer 18
Place.
4th embodiment
Seeing Figure 14, the difference with the intraluminal stent of first embodiment is, according to the pipe of the 4th embodiment
Two mouths of pipe of the second body 22 of chamber support 2 all outer surfaces with the first body 21 are tightly connected,
It is respectively formed two and closes the mouth of pipe.Now, if two mouths of pipe of the second body 22 all seal, then real with second
Execute example to be similar to, cut off passage or the opening forming I type internal hemorrhage due to trauma the most after the implantation.At this seal process
In, again without prior sealing or the packing material adding other in tube chamber 12 support 2 or after implantation,
Only need the blood flowed in normal blood circulation can realize sealing, will not additionally increase sealing or fill material
The biological risks that material strip comes.
5th embodiment
The intraluminal stent of the 5th embodiment is roughly the same with the intraluminal stent of first embodiment, and difference exists
In, the second radial support structure includes network structure, such as woven mesh structure or cutting network structure.
Illustratively, seeing Figure 15, the radial support structure of the second body 22 includes woven mesh structure；See
Figure 16, the radial support structure of the second body 22 includes cutting network structure.
Seeing Figure 17 and 18, the second radial support structure 221 includes cutting network structure, has multiple net
Lattice 2224.This network structure can be formed by the cutting of metal webmaster, such as, (can be included NiTi by memorial alloy
Alloy) webmaster is integrally formed through cut, and the thickness of this metal webmaster can be 0.05mm～0.4mm,
In cutting, enclose the diameter of the connecting rod 2225 forming above-mentioned grid 2224 can be 0.05mm～
0.4mm.Specifically, when footpath a length of 4～20mm of the second radial support structure 221, connecting rod 2225
Diameter between 0.05mm～0.32mm；Footpath a length of 20～50mm when the second radial support structure 221
Time, the diameter of connecting rod 2225 is between 0.1mm～0.35mm；Footpath when the second radial support structure 221
When a length of 50～80mm, the diameter of connecting rod 2225 is between 0.2mm～0.4mm.Above-mentioned string diameter scope
Interior tinsel has higher bending compliance, its coiling the wavy annular thing formed has preferably
Radial deformation capabilities.
The second body at the Breadth Maximum m1 of arbitrary grid 2224 that cutting is formed and this grid 2224
The girth D of 22 meets m1≤D/12.Specifically, when the second radial support structure 221 footpath a length of 4～
During 20mm, meet m1≤D/12, and m1 is between the scope of 1.5～5mm.Radially support when second
During footpath a length of 20～50mm of structure 221, meet m1≤D/13, and m1 is between 1.5～7mm
Scope.When footpath a length of 50～80mm of the second radial support structure 221, meet m1≤D/14, and
M1 between 1.5～8mm scope.M1 is the least, then the effect of joint filling is the best.
Comply with the deformability of lumen wall for improving the second radial support structure further, can arrange above-mentioned
Grid greatest length vertically is between 4～16mm.Specifically, when the second radial support structure 221
During footpath a length of 4～20mm, grid greatest length vertically is between 4～12mm.Radially support when second
During footpath a length of 20～50mm of structure 221, grid greatest length vertically is between 6～14mm.When
During footpath a length of 50～80mm of the second radial support structure 221, grid greatest length vertically between
8～16mm.
At least one grid 2224 cancellated has filleted corner 2222, and filleted corner 2222 is circumferentially
Breadth Maximum n1 meets n1≤1.5mm.N1 value is the least, and the second body 22 complies with the deformation of lumen wall
Ability is the strongest, then the ability filling gap is the strongest, and the ability therefore blocking internal hemorrhage due to trauma is the strongest.
Sixth embodiment
Sixth embodiment provides a kind of intraluminal stent system, and this intraluminal stent system includes that at least one depends on
According to intraluminal stent 2 arbitrary in above-mentioned first embodiment to the 4th embodiment, can be wherein that multiple tube chamber props up
Frame 2 cooperates in implantation tube chamber, it is also possible to be that this intraluminal stent 2 one or more is existing not with other
The intraluminal stent possessing the second radial support structure coordinates in implantation tube chamber.For convenience of distinguishing, below will depend on
Being referred to as the first intraluminal stent 2 according to the intraluminal stent 2 of this utility model embodiment, other is existing does not possess
The intraluminal stent of two radial support structure can be collectively referred to as the second intraluminal stent 3.The quantity of the first intraluminal stent 2
At least one, can be i.e. one or two, the most.Such as, one conventional can be used
Two intraluminal stents 3 and first intraluminal stent 2 fit applications according to this utility model embodiment are in cigarette
In chimney technology or periscope technology or sandwich technique.The most such as, one conventional second can be used
Intraluminal stent 3 and two the first intraluminal stent 2 fit applications according to this utility model embodiment are in abdomen master
In tremulous pulse, wherein the second intraluminal stent 3 is implanted in ventral aorta, and two the first intraluminal stents 2 are planted respectively
Enter in renal artery.More than it is used only as citing, is not to restriction of the present utility model, the technology of this area
Personnel can be based on teaching of the present utility model, according to concrete implantation tube chamber situation, select suitable quantity and
The intraluminal stent of type forms intraluminal stent system, coordinates and implants, to guarantee that blood flow is unobstructed.
See Figure 19, be generally of three branch vessel at aortic arch 191, such as, can use chimney skill
Art rebuilds channel of blood flow herein.Arrow in figure is blood flow direction, and above defined blood flow proximally flows
To far-end.After implantation, please also refer to Figure 20, the near-end of the first intraluminal stent 2 and the second intraluminal stent
The proximal openings of 3 is towards consistent and be located at side by side in aortic arch 191 blood vessel, wherein the first intraluminal stent
2 for according to this utility model embodiment, there is the first body 21 and intraluminal stent of the second body 22,
Second intraluminal stent 3 can be selected for first intraluminal stent 2, it is possible to selects and existing does not possess second radially
The intraluminal stent of support structure.In this diagram, the second intraluminal stent 3 is conventional overlay film frame, such as
Straight pipe type overlay film frame can be used.The far-end of the first intraluminal stent 2 stretches into a branch vessel, such as
Left subclavian artery 192, blood can flow into branch from aortic arch 191 blood vessel via the first intraluminal stent 2
Blood vessel, thus rebuild branch vessel passage.As simple signal, the first intraluminal stent 2 shown in Figure 20
Including the first body 21 and the second body 22, wherein the second body 22 covers a part for the first body 21
Proximal end region, but do not cover the proximal face of the first body 21, the concrete structure ginseng of the first intraluminal stent 2
See Fig. 3.The near-end of the first intraluminal stent 2 and the near-end of the second intraluminal stent 3 are arranged side by side, the second body
The proximal face of 22 can be substantially flush with the proximal face of the second intraluminal stent 3, and the first body 21 is relatively
Proximally extend prominent.
See Figure 20, after implantation, under the radial compression effect of wall of the lumen, the first intraluminal stent 2 and
The proximal end region of two intraluminal stents 3, in the aortic arch 191 mutual radial compression of Ink vessel transfusing, radially props up at this
In support section, as the second intraluminal stent 3 of main body rack at the first intraluminal stent 2 as branch stent
Extruding under comply with deformation；Unobstructed for guaranteeing branch's blood vascular flow, the first pipe of the first intraluminal stent 2
Body 21 has bigger radial direction support force, tube chamber can be avoided to lose in extrusion process, and the second body 22
Because radial direction support force is less, the pattern that can simultaneously comply with wall of the lumen pattern and the second intraluminal stent 3 becomes
Shape, thus between the first body 21 and the second body 22, form gap 20.This gap 20 is filled with existing
Have the I type internal hemorrhage due to trauma passage between main body rack and branch stent in technology, because of this gap 20 one end open,
The other end is closed, and the blood flow therefore flowing into this gap 20 can lead to as sealed filling material closure I type internal hemorrhage due to trauma
Road, it is to avoid blood flow enters at tumor body or interlayer, guarantees that the second body 22 is unobstructed simultaneously, and blood flow can flow smoothly
Enter branch vessel.Further, when blood flow rushes at above-mentioned semiclosed gap 20, shape under pressure
Become whirlpool, change blood flow direction, beneficially blood and flow into the first body 21, promote blood flow in branch vessel
Patency and ensure that the flow velocity of blood flow in branch vessel.
See Figure 21, in another example, periscope reconstruction blood vessel access can be used, as main body
The far-end of the second intraluminal stent 3 of support can with the near-end of the first intraluminal stent 2 as branch stent also
Row arrange, in figure, arrow shows blood flow direction, for single intraluminal stent, blood all from
The near-end of this intraluminal stent flows to far-end.Specifically, the first intraluminal stent 2 includes the first body 21 and
Two bodys 22, the second body 22 covers a part of proximal end region of the first body 21, but does not covers first
The proximal face of body 21.The near-end of the first intraluminal stent 2 and the far-end of the second intraluminal stent 3 set side by side
Putting, the proximal face of the second body 22 can be substantially flush with the far-end end face of the second intraluminal stent 3, and first
Relative second body 22 of body 21 extends prominent.After implantation, at tube chamber (such as aortic arch 191) wall
Radial compression effect under, can the far-end of the second intraluminal stent 3, first body the 21, second body 22 with
And between wall of the lumen, form semiclosed gap (not shown), and also will be at the first body 21 and
Form semiclosed gap (not shown) between two bodys 22, thus block the generation of I type internal hemorrhage due to trauma passage,
Blood is avoided to flow at tumor body or interlayer.It addition, blood flow inversely can enter from the far-end of the second intraluminal stent 3
Entering the near-end of the first intraluminal stent 2, as shown by arrow A, in this case, blood flow is to above-mentioned half envelope
The impulsive force closing gap is less, can block the formation of I type internal hemorrhage due to trauma further.
7th embodiment
See Figure 22, can also be used at ventral aorta 193 according to the intraluminal stent of this utility model embodiment,
If in ventral aorta 193 implant support, according to tumor body or the pattern of interlayer 18, need to consider renal artery and
/ or iliac artery two at branch vessel.Arrow in figure is blood flow direction, above defined, for single pipe
For the support of chamber, blood flow proximally flows to far-end.Multiple first intraluminal stent 42,43 and one can be used
Two intraluminal stents 41 coordinate to be implanted；Wherein the first intraluminal stent 42,43 is according to this utility model embodiment
There is the first body and the intraluminal stent of the second body, the second intraluminal stent 41 can be selected for and the first tube chamber
Support 42, the intraluminal stent that 43 types are identical or different, in this diagram, the second intraluminal stent 41 is normal
The overlay film frame of rule, such as straight pipe type overlay film frame.
See Figure 22 and 23, at renal artery 194, at 195, two the first intraluminal stents 42,43 and
Second intraluminal stent 41 coordinates to be implanted, the near-end of two the first intraluminal stents 42,43 and the second intraluminal stent
The proximal openings of 41 is towards consistent and be located at side by side in ventral aorta blood vessel 193, and two the first tube chambers prop up
Frame 42, the far-end of 43 is respectively protruding into a branch vessel, i.e. right renal artery 194 or left renal artery 195, blood
Liquid can flow into branch vessel from ventral aorta blood vessel 194 via the first intraluminal stent 42,43.
Specifically, the first intraluminal stent 42 includes the first body 421 and the second body 422, the second body
The 422 a part of proximal end regions covering the first body 421, but do not cover the proximal face of the first body 421.
The near-end of the first intraluminal stent 42 and the near-end of the second intraluminal stent 41 are arranged side by side, the second body 422
Proximal face can be substantially flush with the proximal face of the second intraluminal stent 41, the first body 421 is relatively
Proximally extend prominent.Similarly, the first intraluminal stent 43 includes the first body 431 and the second body 432,
Second body 432 covers a part of proximal end region of the first body 431, but does not covers the first body 431
Proximal face.The near-end of the first intraluminal stent 43 and the near-end of the second intraluminal stent 41 are arranged side by side,
The proximal face of the second body 43 can be substantially flush with the proximal face of the second intraluminal stent 41, the first pipe
Body 431 the most proximally extends prominent.
See Figure 23, after implantation, under the radial compression effect of the wall of the lumen of ventral aorta blood vessel 193,
The proximal end region of the first intraluminal stent 42 and the second intraluminal stent 41 is mutual in ventral aorta blood vessel 193
Radial compression, in this radially supporting section, as the second intraluminal stent 41 of main body rack as branch
Deformation is complied with under the extruding of the first intraluminal stent 42 of support；Unobstructed for guaranteeing branch's blood vascular flow, the
First body 421 of one intraluminal stent 42 has bigger radial direction support force, can avoid in extrusion process
Tube chamber is lost, and the second body 422 is less because of radial direction support force, can comply with wall of the lumen pattern, Yi Jishun
The pattern answering the second intraluminal stent 41 deforms, thus shape between the first body 421 and the second body 422
Become gap 420.This gap 420 is filled with in prior art in the I type between main body rack and branch stent
Leakage passage, and because one end open, the other end in this gap 420 are closed, therefore flow into this gap 420
Blood flow can block I type internal hemorrhage due to trauma passage as sealed filling material, guarantees that the second body 422 is unobstructed, blood simultaneously
Stream can flow into branch vessel smoothly.Further, when blood flow rushes at above-mentioned semiclosed gap 420,
Form whirlpool under pressure effect, change blood flow direction, beneficially blood and flow into the first body 421, promote to divide
The patency of blood flow ensure that the flow velocity of branch vessel blood flow in branch vessel.Similarly, the first tube chamber props up
Also can form gap 430 between first body 431 and second body 432 of frame 43, this gap 430 is filled out
Fill the I type internal hemorrhage due to trauma passage between main body rack and branch stent in prior art.
Seeing Figure 22 and 24, at iliac artery 196, at 197, two the first intraluminal stents 44,45 coordinate plants
Entering, the proximal openings of two the first intraluminal stents 44,45 is towards consistent and be located at ventral aorta blood vessel side by side
In 193, the far-end of two the first intraluminal stents 44,45 is respectively protruding into a branch vessel, the rightest iliac artery
196 or left iliac arterys 197, blood can flow via the first intraluminal stent 44,45 from ventral aorta blood vessel 193
Enter branch vessel 196,197.
Specifically, the first intraluminal stent 44 includes the first body 441 and the second body 442, the second body
The 442 a part of proximal end regions covering the first body 441, but do not cover the proximal face of the first body 441；
First intraluminal stent 45 includes the first body 451 and the second body 452, and the second body 452 covers first
A part of proximal end region of body 451, but do not cover the proximal face of the first body 451.Two first
Intraluminal stent 44, the near-end of 45 is arranged side by side, and proximal face is substantially flush, such as two the first bodys
The proximal face of 441,451 is substantially flush and/or the proximal face of two the second bodys 442,452 is the neatest
Flat.
See Figure 24, after implantation, under the radial compression effect of the wall of the lumen of ventral aorta blood vessel 193,
Two the first intraluminal stent 44,45 mutual radial compression in ventral aorta blood vessel 193, radially support at this
In section, two the first bodys 441,451 deform inconspicuous because radial direction support force is relatively large, and two the
Two bodys 442,452 are less because of radial direction support force, can comply with wall of the lumen pattern and comply with the first body
Pattern deforms, thus forms gap, such as gap 440 between respective first body and the second body
With 450.The one end open in this gap, the other end are closed, and the blood flow therefore flowing into this gap can be as sealing
Packing material closure I type internal hemorrhage due to trauma passage, it is to avoid blood flows at tumor body or interlayer, guarantees that blood flow can be suitable simultaneously
Profit flows into two the first bodys.
To sum up, include the first body according to the intraluminal stent of this utility model embodiment and cover the first body
Second body of at least some of radially supporting section, after intraluminal stent is implanted, can be at the first body and the
Form semi-enclosed gap between two bodys, or formed between the second body and wall of the lumen semi-enclosed between
Gap, the blood flowing into above-mentioned gap can block I type internal hemorrhage due to trauma passage as packing material, it is to avoid blood flows into tumor
At body or interlayer.
Separately, the first body and the second body are respectively provided with radially enabling capabilities, are i.e. respectively provided with radially support force,
Therefore remain to after implanting tube chamber be pasted with wall of the lumen by its radial direction support force under the radial compression of wall of the lumen
Cover；Meanwhile, under the impact of blood flow, the first body and the second body all can keep radially supporting pattern,
Avoid fold, varus, the generation of the deformation such as cave in, especially may insure that the proximal face of intraluminal stent
Place does not deforms, thus avoids the blood flowing into tube chamber to be obstructed.
Separately, the second body is compared the first body and is had bigger radial deformation capabilities mutually, therefore at wall of the lumen
Radial compression effect under, the first body can ensure that tube chamber is not lost and kept blood flow unobstructed, and second pipe
Body can comply with while guaranteeing to paste wall of the lumen wall of the lumen and the first body deformation, by the first body with
Gap between gap or the second body and wall of the lumen between second body stops the shape of I type internal hemorrhage due to trauma
Become.
Separately, according in the mounting system of this utility model embodiment, according to the pipe of this utility model embodiment
Chamber support can coordinate with other conventional intraluminal stent, or multiple tube chamber according to this utility model embodiment props up
Frame is fitted to each other, and implants and has at the tube chamber of branch vessel, guarantees point while isolation tumor body or interlayer
The blood flow of branch vessel is unobstructed, and prevents the formation of I type internal hemorrhage due to trauma.
Claims (11)
1. an intraluminal stent, it is characterised in that include the first body and the second body, described second pipe
Body is sheathed on outside described first body, and at least one end is tightly connected with the outer surface of described first body；
Described second body includes covering the described first at least one of thin-film body of body and being located at described thin
The maximum path length district of film body the second radial support structure around described maximum path length district, described second footpath
To supporting construction, there is radially support performance.
Intraluminal stent the most according to claim 1, it is characterised in that described first body include to
Few first radial support structure being circumferentially arranged along it.
Intraluminal stent the most according to claim 2, it is characterised in that under natural deployed condition,
At same position in described radial direction supporting section, the path length of described second radial support structure is described first
1.3 times of the path length of radial support structure～3 times.
Intraluminal stent the most according to claim 2, it is characterised in that under natural deployed condition, institute
State the footpath of the first radial support structure described in the fineness ratio of the second radial support structure and grow up 2～30mm.
Intraluminal stent the most according to claim 2, it is characterised in that described second radially supports knot
The radial deformation capabilities of structure is more than the radial deformation capabilities of described first radial support structure.
Intraluminal stent the most according to claim 5, it is characterised in that under same radial power effect,
The path length variable quantity of described second radial support structure is more than the path length change of described first radial support structure
Amount；Or, under same radial power effect, the path length rate of change of described second radial support structure is more than
The path length rate of change of described first radial support structure；Or, there is same radial rate of change or identical
During radial variations amount, the radially outward force that described first radial support structure needs radially supports than described second
The radially outward force that structure needs is big.
Intraluminal stent the most according to claim 1, it is characterised in that described second radially supports knot
Structure is wavy annular thing, and under the natural deployed condition, arbitrary waveform of described wavy annular thing is circumferentially
The girth D of the second body at Breadth Maximum m and this waveform meets m≤D/12 or m≤D/13 or m
≤D/14。
Intraluminal stent the most according to claim 1, it is characterised in that described second radially supports knot
Structure is the network structure including multiple grid, and under the natural deployed condition, arbitrary described grid is circumferentially
The girth D of the second body at Breadth Maximum m1 and this grid meet m1≤D/12 or m1≤D/13 or
m1≤D/14。
Intraluminal stent the most according to claim 2, it is characterised in that cover at described thin-film body
In part, described first body also includes the first overlay film covering the first radial support structure.
10. according to the intraluminal stent described in any one of claim 1-9, it is characterised in that described thin film
One end of body is tightly connected with described first body, and the other end is open；The maximum path length district of described thin-film body
It is positioned at the near ports of open one end, or is positioned at the mid portion of described thin-film body.
11. according to the intraluminal stent described in any one of claim 1-9, it is characterised in that described thin film
The two ends of body are all tightly connected with described first body；The maximum path length district of described thin-film body is positioned in the middle of it
Part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521131614.XU CN205458864U (en) | 2015-12-30 | 2015-12-30 | Tubular cavity stent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521131614.XU CN205458864U (en) | 2015-12-30 | 2015-12-30 | Tubular cavity stent |
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| Publication Number | Publication Date |
|---|---|
| CN205458864U true CN205458864U (en) | 2016-08-17 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105662511A (en) * | 2015-12-30 | 2016-06-15 | 先健科技(深圳)有限公司 | Lumen stent |
| WO2018045795A1 (en) * | 2016-09-07 | 2018-03-15 | 先健科技(深圳)有限公司 | Luminal stent and luminal stent system |
| CN111067668A (en) * | 2019-12-27 | 2020-04-28 | 先健科技(深圳)有限公司 | Force measuring device |
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2015
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105662511A (en) * | 2015-12-30 | 2016-06-15 | 先健科技(深圳)有限公司 | Lumen stent |
| WO2017114305A1 (en) * | 2015-12-30 | 2017-07-06 | 先健科技(深圳)有限公司 | Lumen stent |
| CN105662511B (en) * | 2015-12-30 | 2018-10-26 | 先健科技(深圳)有限公司 | Intraluminal stent |
| US10702370B2 (en) | 2015-12-30 | 2020-07-07 | Lifetech Scientific (Shenzhen) Co., Ltd | Lumen stent |
| WO2018045795A1 (en) * | 2016-09-07 | 2018-03-15 | 先健科技(深圳)有限公司 | Luminal stent and luminal stent system |
| CN107822739A (en) * | 2016-09-07 | 2018-03-23 | 先健科技(深圳)有限公司 | Intraluminal stent and intraluminal stent system |
| CN111067668A (en) * | 2019-12-27 | 2020-04-28 | 先健科技(深圳)有限公司 | Force measuring device |
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