CN108261250A - Leakage overlay film frame system in anti- - Google Patents
Leakage overlay film frame system in anti- Download PDFInfo
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- CN108261250A CN108261250A CN201611261832.4A CN201611261832A CN108261250A CN 108261250 A CN108261250 A CN 108261250A CN 201611261832 A CN201611261832 A CN 201611261832A CN 108261250 A CN108261250 A CN 108261250A
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- overlay film
- film frame
- flexible
- leakage
- leak stoppage
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- 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
- A61F2/0077—Special surfaces of prostheses, e.g. for improving ingrowth
-
- 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
- A61F2/95—Instruments specially adapted for placement or removal of stents or 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
- A61F2/07—Stent-grafts
- A61F2002/075—Stent-grafts the stent being loosely attached to the graft material, e.g. by stitching
-
- 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
- A61F2210/00—Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
-
- 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
- A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2220/0025—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
-
- 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
- A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2250/0058—Additional features; Implant or prostheses properties not otherwise provided for
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- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Public Health (AREA)
- Transplantation (AREA)
- Cardiology (AREA)
- Veterinary Medicine (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Gastroenterology & Hepatology (AREA)
- Pulmonology (AREA)
- Prostheses (AREA)
- Media Introduction/Drainage Providing Device (AREA)
- Surgical Instruments (AREA)
Abstract
The invention discloses one kind it is anti-in leakage overlay film frame system, including conveyer, can be compressed into conveyer and the overlay film frame of initial configuration and at least one flexible leak stoppage part for filling gap and being connected with overlay film frame can be restored after being discharged from conveyer.There is flexible leak stoppage part the fixing end being connected with the peripheral surface of overlay film frame and the free end for being free on the overlay film frame peripheral surface, fixing end to be connected with the portion perimeter face of overlay film frame.Flexible leakage barriers are supported without metallic support, it is made of the overlay film with good biocompatibility, the flexible leakage barriers of no metallic support support can preferably fashion into the shape in gap, so as to fill the gap in " chimney " technology among two stents, leaked so as to achieve the purpose that control in I types.
Description
Technical field
The present invention relates to cardiac vascular medical instrument field more particularly to a kind of anti-interior leakage overlay film frame systems.
Background technology
CPG (Chimney and/or periscope graft) includes two parts of chimney technology and periscope technology.
Stent or covered stnet are open then is known as chimney technology to nearly heart side, and is open and is then known as periscope technology to telecentricity side.
Figure 18 gives the treatment schematic diagram of use " chimney " reconstruction bow top set artery.Stanford A types
Interlayer, 3 be vascular wall, and 4 be false chamber, placed side by side using straight pipe type overlay film frame 2 and periphery overlay film frame 1, rebuilds the upper neck of bow
Total artery and left subclavian artery.
Figure 19 gives use " chimney " treatment schematic diagram of reconstruction bilateral renal arteries.Using the main overlay film branch of abdomen
Frame 5 and periphery stent 1 are placed side by side, treat abdominal aneurvsm.
Generally speaking, " chimney " technology is placed side by side using overlay film frame and periphery stent, and Figure 20 gives blood vessel
Cross-sectional view, overlay film frame 2 and periphery stent 1 are placed in blood vessel 3, according to the radial support power situation of two stents, cover
Membrane support 2 and overlay film frame 1 can crimp, due to uneven to the power on each stent cover, cause stent inhomogeneous deformation,
Gap 7 can be formed among two stents, the incidence leaked in I types clinically is caused to increase.
To solve the above problems, one covering with outer stent of the U.S. Patent Publication of Patent No. US 7044962B2
For preventing, I types are interior to be leaked membrane support.As shown in figure 21, outer stent 16 has blind end and free end, blind end and internal layer branch
Frame sealing is connected, and the diameter of free end is more than the diameter of inner stent.Outer stent 16 is fabricated from a flexible material, without metal
Support, the pressure impacted by blood carry out expansion fitting vascular wall to form physical barriers, so as to prevent being leaked in I types.But
The patent still has problems with：
1. since outer stent 16 is without metal support, in release, it is required that envelope is directed toward in the free end of outer stent 16
The direction of closed end is consistent with blood flow direction, so that blood flow is entered between inner stent 12 and outer stent 16 so as to strut
Outer stent 16 achievees the purpose that leak in anti-.So the direction that sheath is withdrawn is required during release.For the bow shown in Figure 18
Top set's artery, sheath needs are withdrawn towards proximal part, this easily causes injury of blood vessel, and the design and operation of conveyer are more multiple
It is miscellaneous.For bilateral renal arteries shown in Fig. 2, implantation periphery stent must from arteria brachialis, radial artery or ulnar artery approach, and for
The smaller patient of approach blood vessel diameter then treats easily limited.
2. Given this outer stent is unfolded by blood flow impact in the stent in patent, and outer stent 16 does not have metal
Support, this can cause following problem：In firm release, the expansion of outer stent 16 is random or is attached on inner stent 12
, blood flow selectively can not first flow into the gap among outer stent 16 and inner stent 12, if blood flow first flows into outside
Gap between layer stent 16 and vascular wall, can apply radial compression force to outer stent 16 then can cause outer stent 16 to be opened up not open
And the effect leaked in anti-is not had.Even if blood flow washes outer stent open, since outer stent 16 has one end and inner stent
12 be to be tightly connected, and is fully relied in " loudspeaker " between outer stent 16 and inner stent 12 partly stop that blood flow prevents
Leakage, can cause the surge of this part to increase, can if things go on like this cause stent migration, form new interlayer and endangium mistake
Spend hyperplasia.
In view of the above-mentioned problems, relief hole 28 has been opened up on this patent outer stent 16, but if relief hole 28 is too big
The effect leaked in anti-is not had, the deformation of 16 part of outer stent is easily caused if relief hole 28 is too small cannot be attached to vascular wall
On do not have an effect for preventing interior leakage, while the thrombus that 16 inside of outer stent is formed by this aperture if brain is entered
It can cause the complication such as cerebral infarction.Therefore the design difficulty of relief hole is larger.
3. the blind end of outer stent 16 is connected with the entire excircle of inner stent 12, when withdrawing sheath, although outside
Layer stent 16 can also be accumulated, but can not selectively be deposited in overlay film branch towards the gap between overlay film frame and vascular wall
Gap between frame and vascular wall, easily causes periphery stent and excessive outer stent is accumulated at overlay film frame fitting position, and covers
Enough outer stents are not accumulated in gap between membrane support and vascular wall, so as to not have the effect leaked in anti-.
Invention content
The technical problem to be solved in the present invention is, in view of the drawbacks of the prior art, provides a kind of anti-interior leakage overlay film frame.
The technical solution adopted by the present invention to solve the technical problems is：A kind of anti-interior leakage overlay film frame system, packet are provided
Conveyer is included, can be compressed into the conveyer and can be restored after being discharged from the conveyer overlay film branch of initial configuration
Frame and at least one flexible leak stoppage part for filling gap and being connected with the overlay film frame, the flexible leak stoppage part have
The fixing end that is connected with the peripheral surface of the overlay film frame and the free end for being free on the overlay film frame peripheral surface, it is described solid
Fixed end is connected with the portion perimeter face of the overlay film frame.
In one embodiment of this invention, the free end is equipped with connection structure so that the flexible leak stoppage part is opposite
It is controllable in the position in gap.
In one embodiment of this invention, the connection structure includes one section of suture, one end of the suture and institute
It states free end to be connected, the other end is connected with the overlay film frame.
In one embodiment of this invention, the conveyer has control terminal, and the connection structure is included described in certainly
By the adjustment hole or connection ring held and be connected with the conveyer control terminal.
In one embodiment of this invention, the overlay film frame offers through-hole, and the control terminal is equipped with connector, described
The free end of flexible leak stoppage part is equipped at least two connection structures；
When the overlay film frame is located in the conveyer, the connector passes through the through-hole and wherein one company
Binding structure is so as to which the free end and the overlay film frame be fixed, after the overlay film frame is completely released, the control
End releases fixation of the connector to the free end, and is connected with another connection structure, so as to control the flexibility
Leak stopping part and the relative position in the gap.
In one embodiment of this invention, the connector be rigid connector, described rigid connector one end with it is described
Adjustment hole or connection ring are connected, and the other end is connected with conveyer control terminal.
In one embodiment of this invention, the fixing end of the flexible leak stoppage part be with radius R1 arc-shaped sides, it is described from
By holding as the arc-shaped side with radius R2, wherein, R1 ＜ R2.
In one embodiment of this invention, the flexible leak stoppage part of the sheet is triangular in shape, fan-shaped or rectangle.
In one embodiment of this invention, the flexible leak stoppage part uses the flexible material with biocompatibility to be made.
In one embodiment of this invention, which includes multiple flexible leak stoppage parts, multiple flexibilities
Leak stopping part is arranged at intervals along the peripheral surface of the overlay film frame.
The present invention increases flexible leakage barriers on the basis of existing periphery stent, and flexible leakage barriers are without metallic support branch
Support, is made of the overlay film with good biocompatibility, and the flexible leakage barriers of no metallic support support can be moulded preferably
Into the shape in gap, so as to fill the gap in " chimney " technology among two stents, so as to reach what is leaked in control I types
Purpose., it can be achieved that being detached with conveyer control piece, the flexible leakage barriers of guarantee are discharging the connection structure of flexible leakage barriers free end
Not transition is accumulated in the process.
Description of the drawings
Below in conjunction with accompanying drawings and embodiments, the invention will be further described, in attached drawing：
Fig. 1 is a kind of front view of anti-interior leakage overlay film frame first embodiment of the present invention；
Fig. 2 is the left view of anti-interior leakage overlay film frame shown in FIG. 1；
Fig. 3 is that anti-interior leakage overlay film frame shown in FIG. 1 is implanted the schematic diagram after blood vessel；
Fig. 4 is a kind of front view of anti-interior leakage overlay film frame second embodiment of the present invention；
Fig. 5 is the left view of anti-interior leakage overlay film frame shown in Fig. 4；
Fig. 6 is a kind of front view of anti-interior leakage overlay film frame 3rd embodiment of the present invention；
Fig. 7 is the left view of anti-interior leakage overlay film frame shown in fig. 6；
Fig. 8 is the enlarged drawing at A positions in anti-interior leakage overlay film frame shown in fig. 6；
Fig. 9 is the front view of overlay film frame in anti-interior leakage overlay film frame shown in fig. 6；
Figure 10 is a kind of front view of anti-interior leakage overlay film frame fourth embodiment of the present invention；
Figure 11 is the enlarged drawing at B positions in anti-interior leakage overlay film frame shown in Fig. 10；
Figure 12 is a kind of front view of anti-interior leakage the 5th embodiment of overlay film frame of the present invention；
Figure 13 is a kind of front view of anti-interior leakage overlay film frame sixth embodiment of the present invention；
Figure 14 is the anti-interior left view for leaking flexible leakage barriers in overlay film frame shown in Figure 13；
Figure 15 is a kind of front view of anti-interior leakage the 7th embodiment of overlay film frame of the present invention；
Figure 16 is the front view of flexible leakage barriers in anti-interior leakage overlay film frame shown in figure 15；
Figure 17 is the left view of anti-interior leakage overlay film frame shown in figure 15；
Figure 18 is in the prior art using the treatment schematic diagram of " chimney " reconstruction bow top set artery；
Figure 19 is the treatment schematic diagram for using " chimney " reconstruction bilateral renal arteries in the prior art；
Figure 20 is the cross-sectional view for using " chimney " skill post-surgical vascular in the prior art；
Figure 21 is a kind of for preventing the structure diagram of the overlay film frame leaked in I types in the prior art.
Specific embodiment
For a clearer understanding of the technical characteristics, objects and effects of the present invention, now control attached drawing is described in detail
The specific embodiment of the present invention.
First embodiment：
As depicted in figs. 1 and 2, a kind of anti-interior leakage overlay film frame system 10 includes conveyer (not shown), overlay film frame 11
And two flexible leak stoppage parts 12 being fixed on 11 peripheral surface of overlay film frame.Since the structure of conveyer is existing known skill
Art, therefore repeat no more.Overlay film frame 11 includes rack body and the overlay film being coated on rack body.Rack body has diameter
It to swelliong power, can be compressed into the sheath of conveyer, and from self-expanding after conveyer release or pass through under external force
Mechanical swelling (such as balloon expandable expansion) restores to original shape and keeps original shape, can pass through it after being thus implanted into tube chamber
Radial support power is close to wall of the lumen and is fixed in tube chamber, so as to play the role of reconstruction channel of blood flow, completely cuts off lesion.Overlay film is
It is enclosed by one side wall and sets the both ends open formed and hollow luminal structure, the channel of blood flow is made of the luminal structure.Overlay film sheet
Body has certain thickness, and material is generally made, such as PET film or PTFE film using the high molecular material with biocompatibility
Deng.
Flexible leak stoppage part 12 in the form of sheets, is made of flexible and with biocompatibility material, which can be with
The material of 11 overlay film of overlay film frame is consistent, can not also be consistent.And flexible leak stoppage part 12 can be arbitrary shape, such as triangle
Shape, sector or rectangle etc., thickness can be uniform or non-uniform.In the present embodiment, flexible leak stoppage part 12
There is the peripheral surface that two panels, two panels flexible leak stoppage part 12 etc. divides overlay film frame 11.Arbitrary a piece of flexible leak stoppage part 12 includes with covering
The connected fixing end 121 of membrane support 11 and the free end 122 being oppositely arranged with fixing end 121.
The fixing end 121 of flexible leak stoppage part 12 can be linked together with the peripheral surface of overlay film frame 11 by suture,
It can also be connected by other means, the two can be that a connection can also be face connection, it is however noted that, fixing end
121 length being connect with overlay film frame 11 are less than the overall circumference of 11 peripheral surface of overlay film frame.And fixing end 121 can be connected to and cover
Any position of 11 peripheral surface of membrane support.Free end 122 is not connected with overlay film frame 11, and free end 122 is relative to overlay film frame
11 position is variable.
In actual operation, flexible leak stoppage part is adjusted to clearance position, the sheath for conveyer of dropping back, in sheath inside pipe wall with covering
Under the action of 11 external wall friction power of membrane support, relative motion, flexible leak stoppage part can occur for flexible leak stoppage part 12 and overlay film frame 11
12 because of distal end accumulation of the effect by frictional force to overlay film frame 11, and the gap after two stents placements of filling is pre- so as to reach
The purpose leaked in anti-I types.The anti-interior leakage overlay film frame 10 that Fig. 3 is the present invention is implanted the cross-sectional view after tube chamber 14, overlay film branch
Gap between frame 11 and another stent 13 is filled up by flexible leak stoppage part 12, so as to achieve the purpose that be leaked in anti-.
Relative to anti-interior leakage overlay film frame of the prior art, overlay film frame of the invention does not have the recession direction of sheath
It is required that, it is only necessary to flexible leak stoppage part is adjusted to clearance position and is then dropped back sheath, using between sheath and flexible leak stoppage part
Frictional force causes flexible leak stoppage part is accumulated to gap to complete leak stopping.It is structurally and operationally very simple, and can be directed to
Clearance position carries out leak stopping, and high selectivity does not in addition also require the structure of conveyer and design.On the other hand, due to soft
Property leak stopping part do not need to depended on pressure to complete to open, therefore do not need to design relief hole, will not there are problems that stent migration,
Design difficulty is greatly reduced, and the extruding force between the flexible leak stoppage part and vascular wall after accumulation also is able to prevent stent from moving
Position.
Second embodiment：
As shown in figure 4, in the present embodiment, the structure of the anti-structure and a upper embodiment for shortening overlay film frame system 20 is basic
It is identical, it is similary including overlay film frame 21 and the flexible leakage barriers 22 being connected with overlay film frame 21.Different from a upper embodiment,
In the present embodiment, the free end 222 of flexible leakage barriers 22 is additionally provided with connection structure so that flexible leakage barriers 22 relative to
The position in gap is controllable.
As shown in figure 5, in the present embodiment, connection structure is one section of suture 23, and one end and the flexibility of suture 23 are prevented
The free end 222 of missing part 22 is connected, and the other end is connected with overlay film frame 21.The length of suture 23 can design difference according to demand
Length.In actual operation, sheath of dropping back, under the action of sheath inside pipe wall and overlay film frame external wall friction power, flexible leakage barriers
22 accumulate to overlay film frame distal end.The displacement distance of the length limitation flexibility leakage barriers 22 of suture 23, prevents flexible leakage barriers
22 is excessively mobile to distal end under the action of frictional force, so as to ensure that flexible leakage barriers 22 can just fill two branch after accumulating
Gap after frame placement.
3rd embodiment：
As shown in Figure 6 and Figure 7, in the present embodiment, the knot of the anti-structure and a upper embodiment for shortening overlay film frame system 30
Structure is essentially identical, similary including overlay film frame 31 and the flexible leakage barriers 32 being connected with overlay film frame 31.Implement different from upper one
Example, in the present embodiment, connection structure on the free end 322 of flexible leakage barriers 32 be for conveyer control terminal phase
Adjustment hole 33 even, by the control of conveyer control terminal, so that flexible leakage barriers 22 are controllable relative to the position in gap.
As shown in figure 8, in this embodiment, there are two adjustment holes 33, it is adjustment hole 331 and adjustment hole 332 respectively.Such as figure
Shown in 9, a through-hole 311 is additionally provided on overlay film frame 31.The control terminal of conveyer is equipped with a connection piece 34, which is
One semiclosed or closing cyclic structure, can be rigid or flexible.When overlay film frame 31 is located at conveyer
When in sheath and during the release of overlay film frame 31, the connector 34 of control terminal passes through the adjustment hole 331 of free end 322
With the through-hole 311 on overlay film frame 31, so that free end 322 and the relative position of overlay film frame 31 be fixed.This is because it covers
There are frictional force, under the action of frictional force, overlay film frame 31 and flexible leak stoppage part between membrane support 31 and the sheath of conveyer
32 can move relative to sheath, this is unfavorable for the gap between two stents of filling of flexible leak stoppage part 32, while is also unfavorable for
The positioning of overlay film frame.It therefore, can be temporarily by free end 322 and overlay film across the connector 34 of through-hole 311 and adjustment hole 331
Stent 31 is fixed together.After overlay film frame 31 is completely released from sheath, conveyer control terminal withdraws from connector 34
Then through-hole 311 and adjustment hole 331 control flexible leakage barriers 32 by the connection of connector 34 and another adjustment hole 332 again
It does relative motion relative to overlay film frame 31, and fills the gap between the overlay film frame 31 and another stent.
Fourth embodiment：
As shown in Figure 10 and Figure 11, the structure of the anti-shortening overlay film frame system 40 of the present embodiment and a upper embodiment are basic
It is identical, unlike, in the present embodiment, connection structure is connection ring 43.It is identical with a upper embodiment, flexible leak stoppage part 42
Free end 422 can set multiple connection rings 43 being connected with the control terminal of conveyer, pass through connection ring 43 and conveyer control terminal
Connection, overlay film frame 41 is avoided to be shifted during release, so as to preferably adjust with control flexible leak stoppage part 42 with
The relative position in gap.
5th embodiment：
As shown in figure 12, the anti-shortening overlay film frame system 50 of the present embodiment is on the basis of upper two embodiments, conveying
The connector of device control terminal is the rigid connector 54 being connected with the through-hole (not shown) on adjustment hole 53 and overlay film frame 51.By
In the connector be rigid, therefore either when overlay film frame 51 is located in sheath or during release, rigid connection
Part 54 is capable of providing always gives overlay film frame 51 1 support forces opposite with the recession direction of sheath, so that overlay film frame
51 move when different from flexible leak stoppage part 52.
Sixth embodiment：
As shown in Figure 13 and Figure 14, on the basis of the various embodiments described above, the fixation of the flexible leak stoppage part 62 of the present embodiment
End 621 is the arc-shaped side with radius R1, and free end 622 is the arc-shaped side with radius R2, and R1 ＜ R2.Two arc-shaped sides
Both ends can be connected by straightway and can also be connected by curved section.
7th embodiment：
As seen in figs. 15-17, on the basis of the various embodiments described above, the flexible leak stoppage part 72 of the present embodiment has multi-disc,
More sheets of flexible leak stopping part 72 is arranged along the peripheral surface uniform intervals of overlay film frame 71.Every flexible leak stoppage part 72 is triangular in shape.
The present invention increases flexible leakage barriers on the basis of existing periphery stent, and flexible leakage barriers are without metallic support branch
Support, is made of the overlay film with good biocompatibility, and the flexible leakage barriers of no metallic support support can be moulded preferably
Into the shape in gap, so as to fill the gap in " chimney " technology among two stents, so as to reach what is leaked in control I types
Purpose., it can be achieved that being detached with conveyer control piece, the flexible leakage barriers of guarantee are discharging the connection structure of flexible leakage barriers free end
Not transition is accumulated in the process.
Embodiment described above only expresses the several embodiments of the present invention, and description is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that those of ordinary skill in the art are come
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Range.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
- Leakage overlay film frame system in 1. one kind is anti-, including conveyer, can be compressed into the conveyer and from the conveyer It can restore the overlay film frame of initial configuration and at least one for filling gap and be connected with the overlay film frame after interior release Flexible leak stoppage part, the flexible leak stoppage part has the fixing end that is connected with the peripheral surface of the overlay film frame and is free on institute State the free end of overlay film frame peripheral surface, which is characterized in that the fixing end is connected with the portion perimeter face of the overlay film frame.
- 2. anti-interior leakage overlay film frame system according to claim 1, which is characterized in that the free end is equipped with connection structure So that the flexible leak stoppage part is controllable relative to the position in gap.
- 3. anti-interior leakage overlay film frame system according to claim 2, which is characterized in that the connection structure includes one section of seam Zygonema, one end of the suture are connected with the free end, and the other end is connected with the overlay film frame.
- 4. anti-interior leakage overlay film frame system according to claim 2, which is characterized in that the conveyer has control terminal, The connection structure includes the adjustment hole or connection ring that are set on the free end and are connected with the conveyer control terminal.
- 5. anti-interior leakage overlay film frame system according to claim 4, which is characterized in that the overlay film frame offers logical Hole, the control terminal are equipped with connector, and the free end of the flexible leak stoppage part is equipped at least two connection structures；When the overlay film frame is located in the conveyer, the connector passes through the through-hole to be tied with wherein one connection Structure is so as to which the free end and the overlay film frame be fixed, after the overlay film frame is completely released, the control terminal solution It is connected except fixation of the connector to the free end, and with another connection structure, so as to control the flexible leak stoppage Part and the relative position in the gap.
- 6. anti-interior leakage overlay film frame system according to claim 5, which is characterized in that the connector is rigid connection Part, described rigid connector one end are connected with the adjustment hole or connection ring, and the other end is connected with conveyer control terminal.
- 7. anti-interior leakage overlay film frame system according to claim 1, which is characterized in that the fixing end of the flexible leak stoppage part For with radius R1 arc-shaped sides, the free end is the arc-shaped side with radius R2, wherein, R1 ＜ R2.
- 8. it is according to claim 1 it is anti-in leakage overlay film frame system, which is characterized in that the flexible leak stoppage part of the sheet is in Triangle, sector or rectangle.
- 9. anti-interior leakage overlay film frame system according to claim 1, which is characterized in that the flexible leak stoppage part, which uses, to be had The flexible material of biocompatibility is made.
- 10. interior leakage overlay film frame system is prevented according to claim 1-10 any one of them, which is characterized in that leakage overlay film in this is anti- Stent includes multiple flexible leak stoppage parts, and multiple flexible leak stoppage parts are arranged at intervals along the peripheral surface of the overlay film frame.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611261832.4A CN108261250B (en) | 2016-12-30 | 2016-12-30 | internal leakage prevention covered stent system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611261832.4A CN108261250B (en) | 2016-12-30 | 2016-12-30 | internal leakage prevention covered stent system |
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| CN108261250A true CN108261250A (en) | 2018-07-10 |
| CN108261250B CN108261250B (en) | 2019-12-10 |
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|---|---|
| CN108261250B (en) | 2019-12-10 |
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