CN106137485A - Sacculus and stent delivery system - Google Patents
Sacculus and stent delivery system Download PDFInfo
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- CN106137485A CN106137485A CN201510154990.9A CN201510154990A CN106137485A CN 106137485 A CN106137485 A CN 106137485A CN 201510154990 A CN201510154990 A CN 201510154990A CN 106137485 A CN106137485 A CN 106137485A
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- sacculus
- straight portion
- wall thickness
- transition section
- length
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Abstract
The sacculus of the present invention and stent delivery system, sacculus includes the nearly pipe end being sequentially connected, nearly tapering, sacculus straight portion, remote tapering and remote pipe end, also include Proximal transition section and/or distal transition, described Proximal transition section connects described nearly tapering and described sacculus straight portion, described distal transition connects described sacculus straight portion and described remote tapering, and the wall thickness of described Proximal transition section and/or described distal transition is different from the wall thickness of described sacculus straight portion.In the present invention, Proximal transition section and/or described distal transition it is respectively provided with at the two ends of sacculus straight portion, by selecting the relative length between sacculus straight portion and support, and the relativeness of the wall thickness of corresponding Proximal transition section and/or distal transition and the wall thickness of sacculus straight portion, thus dog bone or the phenomenon expanded not open occur when preventing from implanting support, and realize the length after controlling stenter to implant under conditions of not changing support original size.
Description
Technical field
The invention belongs to technical field of medical instruments, particularly relate to a kind of sacculus and stent delivery system.
Background technology
Cardiac stent operation can significantly improve deficiency myocardial blood supply and the heart arter resistance that coronary heart disease causes
Plug.The process of cardiac stent operative treatment is puncture vessel, makes conduit move ahead in the blood vessel, arrives crown dynamic
Arteries and veins opening part, then use medical high polymer induction system that support is transported to the position needing to lay, place,
Withdraw from conduit, terminate operation.Same, intracranial stent operation is for treating the operation that intracranial vessel is narrow,
Use polymeric delivery system that support is transported to the position needing to lay.
General, cardiac stent, intracranial stent and other endovascular stent generally require use sacculus conduct
Carrier, by position corresponding in stenter to implant human body.Owing to the length of prior art medium-height trestle is discrete,
Different supports needs to mate different sacculus and expands, when lacking the support of a certain length-specific, just
Need correspondingly to elongate or shorten support more preferably to cover diseased region.
Summary of the invention
It is an object of the invention to, it is provided that a kind of sacculus, by arranging the near-end step of sacculus, far-end step,
And control the relative length between sacculus straight portion and support, can be at the bar not changing support original size
Under part, control the length after stenter to implant, thus preferably cover diseased region.
In order to solve the problems referred to above, the present invention provides a kind of sacculus, including the nearly pipe end being sequentially connected, closely bores
Portion, sacculus straight portion, remote tapering and remote pipe end, also include Proximal transition section and/or distal transition,
Described Proximal transition section connects described nearly tapering and described sacculus straight portion, and described distal transition connects institute
State sacculus straight portion and described remote tapering, and described Proximal transition section and/or the wall thickness of described distal transition
Different from the wall thickness of described sacculus straight portion.
Optionally, sacculus straight portion described in the wall ratio of described Proximal transition section and/or described distal transition
Wall thickness thickness 1%-30%.
Optionally, sacculus straight portion described in the wall ratio of described Proximal transition section and/or described distal transition
Wall thickness thickness 5%-20%.
Optionally, sacculus straight portion described in the wall ratio of described Proximal transition section and/or described distal transition
The thin 1%-30% of wall thickness.
Optionally, sacculus straight portion described in the wall ratio of described Proximal transition section and/or described distal transition
The thin 5%-20% of wall thickness.
Optionally, the external diameter of described Proximal transition section and/or described distal transition is less than described sacculus flat part
The external diameter divided, forms near-end step and/or far-end step.
Optionally, the radial height of described near-end step and/or far-end step is 0.2mm-3.0mm, the longest
Degree is 0.5mm-3.0mm.
Optionally, angle between described nearly tapering and Proximal transition section and/or described remote tapering and Distal transition
Angle between Duan is 90 °-175 °.
Optionally, the axial length in described nearly tapering and/or described remote tapering is 1mm-5mm.
Optionally, described sacculus straight portion is one or more layers structure.
Optionally, the material of each layer of described sacculus straight portion be Polyurethane Thermoplastic Elastomer rubber,
One or more in nylon, polyethylene, nylon elastomer are blended.
Optionally, a diameter of 1.0mm-30.0mm after described sacculus straight portion expands.
Optionally, described nearly pipe end and/or a length of 2mm-6mm of described remote pipe end.
Accordingly, the present invention also provides for a kind of stent delivery system, including: the connector that is sequentially connected, near
Outer tube, connecting tube, far ultraviolet pipe, sacculus, support and be positioned at described far ultraviolet pipe and described balloon interior
Pipe, uses above-mentioned sacculus, described support to be arranged at the outside of described sacculus.
Optionally, the length of described sacculus straight portion is more than the length of described support, and described Proximal transition
The wall thickness of section and/or described distal transition is more than the wall thickness of described sacculus straight portion.
Optionally, the length of described sacculus straight portion is less than the length of described support, and described Proximal transition
The wall thickness of section and/or described distal transition is less than the wall thickness of described sacculus straight portion.
Optionally, it is positioned on the outer wall of said inner tube and is provided with two at the two ends of corresponding described sacculus straight portion
Individual developing ring or development point.
Optionally, described developing ring or development point use roentgenopaque developing material.
The sacculus that the present invention provides, is respectively provided with Proximal transition section and/or far-end mistake at sacculus straight portion two ends
The section of crossing, by selecting the relative length between sacculus straight portion and support, and corresponding Proximal transition section
And/or the relative wall thickness between distal transition and sacculus straight portion, it is possible to achieve after controlling stenter to implant
Length, prevents the phenomenon that the dog bone of sacculus or support expand not open simultaneously.
Accompanying drawing explanation
Fig. 1 is the structural representation of sacculus in the present invention；
Fig. 2 is the schematic diagram of an embodiment medium-height trestle induction system in the present invention；
Fig. 3 is the structural representation after sacculus expands in an embodiment in the present invention；
Fig. 4 is the schematic diagram of another embodiment medium-height trestle induction system in the present invention；
Fig. 5 is the structural representation after sacculus expands in another embodiment of the present invention.
Detailed description of the invention
Below in conjunction with schematic diagram, sacculus and the stent delivery system of the present invention are described in more detail,
Which show the preferred embodiments of the present invention, it should be appreciated that those skilled in the art can revise and be described herein
The present invention, and still realize the advantageous effects of the present invention.Therefore, description below be appreciated that for
Those skilled in the art's is widely known, and is not intended as limitation of the present invention.
The core concept of the present invention is, be respectively provided with at the two ends of sacculus straight portion Proximal transition section and/or
Distal transition, by selecting the relative length between sacculus straight portion and support, and corresponding near-end
The wall thickness of changeover portion and/or distal transition and the relativeness of the wall thickness of sacculus straight portion, prevent from implanting and prop up
The phenomenon that dog bone during frame or support expand not open.In the present invention, it is possible to achieve do not changing the original chi of support
The length after stenter to implant is controlled under conditions of very little.
Below in conjunction with Fig. 1-Fig. 5 to the sacculus of the present invention and being specifically described of stent delivery system.
With reference to shown in Fig. 1, nearly pipe end 11 that sacculus 10 includes being sequentially connected, nearly tapering 12, Proximal transition
Section 13, sacculus straight portion 14, distal transition 15, remote tapering 16 and remote pipe end 17.
In the present invention, described sacculus straight portion 14 can be one or more layers structure.Further, described ball
The material of each Rotating fields of capsule straight portion 14 can be Polyurethane Thermoplastic Elastomer rubber, nylon, gather
One or more in ethylene, nylon elastomer are blended.Described sacculus straight portion 14 expand after a diameter of
1.0mm-30.0mm.In the present embodiment, described a length of of sacculus straight portion 14 is implanted as required
The length of support be set, for example, it is possible to according to the length of diseased region and for the support implanted
Between difference select, when the length of diseased region is longer than the length of useable holder, sacculus flat part
14 are divided to be shorter than support, when the length being shorter in length than useable holder of diseased region, sacculus straight portion 14
It is longer than support.Therefore, select different sacculus, by controlling the phase between sacculus straight portion 14 and support
To length so that support can extend or shorten, thus control the length after stenter to implant.Need explanation
, the support in the present invention can be sacculus conveying type support, its structure can be tubulose, netted, twine
Around shape etc., a length of length along sacculus straight portion 14 direction of support, this be those skilled in the art all
It should be understood that do not repeat at this.
In the present embodiment, sacculus 10 is integrated, but in preparation process so that described near-end
The wall thickness of changeover portion 13 is different from the wall thickness of described sacculus straight portion 14, and, described Proximal transition section
The wall thickness of sacculus straight portion 14 described in the wall ratio of 13 is thick or thin 1%-30%, it is preferred that described near-end
The wall thickness of sacculus straight portion 14 described in the wall ratio of changeover portion 13 is thick or thin 5%-20%.Described near-end mistake
The external diameter of the section of crossing 13, less than the external diameter of described sacculus straight portion 14, forms near-end step, described near-end platform
The radial height on rank 13 is 0.2mm-3.0mm, and axial length is 0.5mm-3.0mm.Meanwhile, described far-end
The wall thickness of changeover portion 15 is different from the wall thickness of described sacculus straight portion 14, the wall of described distal transition 15
The wall thickness of sacculus straight portion 14 described in thickness rate is thick or thin 1%-30%, it is preferred that described distal transition
The wall thickness of sacculus straight portion 14 described in the wall ratio of 15 is thick or thin 5%-20%.Described distal transition 15
External diameter less than the external diameter of described sacculus straight portion 14, form far-end step, described far-end step 15
Radial height is 0.2mm-3.0mm, a length of 0.5mm-3.0mm.In the present invention, described by adjusting
Proximal transition section 13 wall thickness and the relativeness of described sacculus straight portion 14 wall thickness, and described far-end mistake
The section of crossing 15 wall thickness and the relativeness of described sacculus straight portion 14 wall thickness, can be in the mistake of sacculus 10 expansion
Cheng Zhong, produces pulling force or pressure at the two ends of support, controls the length of balloon expandable after-poppet, and
The phenomenon that dog bone or support expand not open is there is during being possible to prevent mounting system to expand.
In the present invention, Proximal transition section 13 and/or distal transition 15 be not limited to formed near-end step and/or
Far-end step, produces pulling force or other shapes of pressure as long as can be implemented at support two ends, such as,
Ramped shaped etc., this is also within the thought range of present invention protection.
Additionally, in the present embodiment, the included angle A between described nearly tapering 12 and described Proximal transition section 13 is
90 °-175 °, the axial length in described nearly tapering 12 is 1mm-5mm, described nearly pipe end 11 a length of
2mm-6mm.Included angle B between described remote tapering 16 and described distal transition 15 is 90 °-175 °,
The axial length in described remote tapering 16 is 1mm-5mm.The a length of 2mm-6mm of described remote pipe end 17.
It should be noted that in sacculus 10 length of various piece be according to stent length control is actually needed into
The setting of row, in this range, can preferably realize technique effect.But, those skilled in the art
It is understood that the present invention should be not limited.
It should be noted that in the present invention, sacculus 10 structure can also only include near-end step 13 or remote
End stand rank 15, as long as the length after controlling stenter to implant can be realized, the present invention is without limitation.Additionally,
" far " " closely " in the present invention is to implant the distance of distance observer position during support, and this is expressed as
Being easy to the statement that observer carries out observing, the present invention should be not limited.
Accordingly, the present invention also provides for a kind of stent delivery system, with reference to shown in Fig. 2, stent delivery system
40 connectors 20 including being sequentially connected, nearly outer tube 30, connecting tube 50, far ultraviolet pipe 60, sacculus 10 support
80 and be positioned at the inner tube 70 within described far ultraviolet pipe 60 and described sacculus 10.In the present embodiment, pass through
Support pressure is held technique and is connected with stent delivery system 40 by support 80 so that support 80 is arranged at described sacculus
The outside of straight portion 14, support 80 can become tubulose or be wrapped in the outside of sacculus 10.
Stent delivery system 40 can be divided into front and rear, and front portion includes inner tube 70, sacculus 10, far ultraviolet pipe
60 and connecting tube 50, rear portion includes connector 20, nearly outer tube 30, it is to be understood that implanting support
During 80, anterior tissue of inserting, therefore, anterior needs use human non-toxic's and tissue
Medical macromolecular materials manufacture that skin does not reacts, without particle detachment.The front portion of stent delivery system
In, in inner tube 70, it is formed with guidewire lumen.Inner tube 70, far ultraviolet pipe 60 and connecting tube 50 are assembled formed
Coaxial double cavity structure, the inside of inner tube 70 defines inner chamber, inner tube 70 and far ultraviolet pipe 60 and sacculus 10
Define that exocoel, inner chamber and exocoel are used as guidewire lumen and fluid-through chamber respectively, between connecting tube 50 and inner tube 70
Form guidewire port, be passed through seal wire along guidewire port so that the front portion of stent delivery system can leading along inner chamber
Silk slides, and connecting tube 50 connects with the part of exocoel, is filled with contrast solution for follow-up.
Also it is embedded with two shows additionally, be positioned at the two ends below sacculus straight portion 14 at the outer wall of inner tube 70
Shadow point 71, the material of development point 71 uses roentgenopaque platinum or has the material manufacture of developing property,
During implanting support 80, development point 71 is for identifying position and the length of sacculus 10.Support delivery system
The rear portion of system 40 is made up of single-chamber stainless steel metal skeleton, and connector 20 is for emptying or Filled Balloon 10
Joint, injects contrast solution for sacculus 10 when expanding, nearly outer tube 30 is for by sacculus 10 and support 80
Send into lesion locations.
Preferably, nearly outer tube 30 is embedded with two labelling bands 31, for labelling sacculus 10 and inner tube 70 top
Relative position, sacculus 10 support 80 enters position and the distance of human body to facilitate doctor to judge.
Shown in Fig. 2 and Fig. 4, during implanting support 80, use lancet puncture tremulous pulse, put
Put Arterial sheath, send a guiding catheter to enter lesion vessels, by a seal wire after radiography by Arterial sheath
By guiding catheter intravasation far-end, the front portion of sacculus 10 and stent delivery system 40 is together along leading
Silk slides hence into human body, at this point it is possible to judge that roughly sacculus 10 enters human body by labelling band 31
Position, defeated by the rear portion (connector 20, nearly outer tube 30) of stent delivery system exocoel anteriorly afterwards
Send contrast solution, and then accurately judge that sacculus 10 is in the position of human body and the length of sacculus 10 by development point 71
Degree, and sacculus 10 is expanded, thus support 80 is implanted human body.Afterwards, emptied by connector 20
Contrast solution so that sacculus 10 shrinks, takes out sacculus 10, thus support 80 is implanted human body.
Sacculus 10 expand after structural reference Fig. 3 shown in, in the present embodiment, the Proximal transition of sacculus 10
The wall thickness of section 13 and the wall thickness thickness 20% of the wall ratio sacculus straight portion 14 of distal transition 15.Support 80
A length of 13.0mm before extension, after sacculus 10 expansion, balloon diameter is 3.50mm, sacculus straight portion 14
A length of 14.0mm, Proximal transition section (near-end step) 13 and distal transition (far-end step) 15
Height be 1.0mm, Proximal transition section 13 and a length of 2.0mm of distal transition 15, Proximal transition section
Angle A between 13 and nearly tapering 12 is 160 °, the angle between distal transition 15 and remote tapering 16
B is 160 °, nearly tapering 12 and a length of 3mm in remote tapering 16, nearly pipe end 11 and remote pipeline section 17
A length of 3mm.Owing to the length of sacculus straight portion 14 is longer than the length of support 80, and sacculus 10
Proximal transition section 13 and the wall thickness of wall ratio sacculus straight portion 14 of distal transition 15 thick, sacculus 10
When having expanded support 80, Proximal transition section 13 and distal transition 15 can by support 80 to intermediate compression,
On the one hand the generation of dog bone phenomenon it is possible to prevent, on the other hand so that the support 80 after Kuo Zhang is a length of
8.5mm so that support 80 shortens relative to original size, thus realize controlling the length after support 80 is implanted.
Therefore, in the present embodiment, can by controlling the relative length between sacculus straight portion 14 and support 80,
And the relativeness of the thickness of Proximal transition section 13 and distal transition 15 and sacculus straight portion 14, it may be assumed that
When the length of sacculus straight portion 14 is more than the length of support 80, Proximal transition section 13 and/or Distal transition
The wall thickness of section 15 is more than the wall thickness of sacculus straight portion 14, it is achieved at the bar that need not adjusting pole 80 size
Under part, control the length after support 80 is implanted and shorten relative to original size.
Another embodiment of the stent delivery system 40 of the present invention, with reference to shown in Fig. 4, in the present embodiment, is adopted
By identical process, support 80 is arranged on the outside of sacculus 10, and, use identical method to incite somebody to action
The diseased region of human body implanted by support 80, does not repeats them here.The present embodiment exists with the difference of previous embodiment
In, after sacculus 10 expansion, Proximal transition section 13 and distal transition 15 are positioned at the inside of support 80, ball
Structure chart after capsule 10 expansion is with reference to shown in Fig. 5.In the present embodiment, the Proximal transition section 13 of sacculus 10
With the wall thickness thin 5% of the wall ratio sacculus straight portion 14 of distal transition 15, the original length of support 80
For 33.0mm, after sacculus 10 expansion, balloon diameter is 4.00mm, sacculus straight portion 14 a length of
32.5mm, the height of Proximal transition section (near-end step) 13 and distal transition (far-end step) 15 is
1.2mm, Proximal transition section 13 and a length of 2.2mm of distal transition 15, Proximal transition section 13 and nearly cone
Angle A between portion 12 is 150 °, and the angle B between distal transition 15 and remote tapering 16 is 150 °,
Nearly tapering 12 and a length of 3.5mm in remote tapering 16, nearly pipe end 11 and a length of 3.5mm of remote pipeline section 17.
It is shorter in length than support 80 length due to sacculus straight portion 10, and, the Proximal transition section 13 of sacculus 10
Thinner than the wall of sacculus straight portion 14 with the wall of distal transition 15, when sacculus 10 has expanded support 80, make
Obtain Proximal transition section 13 and support 80 can be stretched to two ends by distal transition 15, on the one hand be possible to prevent
Support 80 can not expand the generation of phenomenon, on the other hand so that a length of 35.5mm of support 80 after expansion,
I.e. when the length of sacculus straight portion 14 is less than the length of support 80, Proximal transition section 13 and/or far-end mistake
The wall thickness of the section of crossing 15 is less than the wall thickness of sacculus straight portion 14, so that support 80 is relative to original size
Elongation, it is achieved control the length after support 80 is implanted.
In sum, Proximal transition section that what the present invention provided be respectively provided with at sacculus straight portion two ends and/or remote
End changeover portion, by controlling the relative length between sacculus straight portion and support, thus controls stenter to implant
After length.Further, by controlling wall thickness and the sacculus straight portion of Proximal transition section and/or distal transition
The relativeness of wall thickness, the phenomenon that dog bone during preventing sacculus from expanding or support expand not open.This
In bright, it is possible to achieve control the length after stenter to implant under conditions of not changing support original size.
Obviously, those skilled in the art can carry out various change and modification without deviating from this to the present invention
Bright spirit and scope.So, if the present invention these amendment and modification belong to the claims in the present invention and
Within the scope of its equivalent technologies, then the present invention is also intended to comprise these change and modification.
Claims (18)
1. a sacculus, including the nearly pipe end being sequentially connected, nearly tapering, sacculus straight portion, remote tapering with
And remote pipe end, it is characterised in that also include Proximal transition section and/or distal transition, described Proximal transition section
Connecting described nearly tapering and described sacculus straight portion, described distal transition connects described sacculus straight portion
With described remote tapering, and the wall thickness of described Proximal transition section and/or described distal transition is straight with described sacculus
The wall thickness of part is different.
2. sacculus as claimed in claim 1, it is characterised in that described Proximal transition section and/or described far-end
Wall thickness thickness 1%-30% of sacculus straight portion described in the wall ratio of changeover portion.
3. sacculus as claimed in claim 2, it is characterised in that described Proximal transition section and/or described far-end
Wall thickness thickness 5%-20% of sacculus straight portion described in the wall ratio of changeover portion.
4. sacculus as claimed in claim 1, it is characterised in that described Proximal transition section and/or described far-end
The thin 1%-30% of the wall thickness of sacculus straight portion described in the wall ratio of changeover portion.
5. sacculus as claimed in claim 2, it is characterised in that described Proximal transition section and/or described far-end
The thin 5%-20% of the wall thickness of sacculus straight portion described in the wall ratio of changeover portion.
6. sacculus as claimed in claim 1, it is characterised in that described Proximal transition section and/or described far-end
The external diameter of changeover portion, less than the external diameter of described sacculus straight portion, forms near-end step and/or far-end step.
7. sacculus as claimed in claim 6, it is characterised in that described near-end step and/or far-end step
Radial height is 0.2mm-3.0mm, and axial length is 0.5mm-3.0mm.
8. the sacculus as described in any one of claim 1-7, it is characterised in that described nearly tapering and Proximal transition
The angle between angle and/or described remote tapering and distal transition between Duan is 90 °-175 °.
9. the sacculus as described in any one of claim 1-7, it is characterised in that described nearly tapering and/or described
The axial length in remote tapering is 1mm-5mm.
10. the sacculus as described in any one of claim 1-7, it is characterised in that described sacculus straight portion is
Layer or multiple structure.
11. sacculus as claimed in claim 10, it is characterised in that each layer of described sacculus straight portion
Material is the one in Polyurethane Thermoplastic Elastomer rubber, nylon, polyethylene, nylon elastomer or several
Plant and be blended.
12. sacculus as described in any one of claim 1-7, it is characterised in that described sacculus straight portion expands
After a diameter of 1.0mm-30.0mm.
13. sacculus as described in any one of claim 1-7, it is characterised in that described nearly pipe end and/or described
The a length of 2mm-6mm of remote pipe end.
14. 1 kinds of stent delivery systems, including: the connector being sequentially connected, nearly outer tube, connecting tube, far ultraviolet
Pipe, sacculus, support and be positioned at described far ultraviolet pipe and the inner tube of described balloon interior, it is characterised in that institute
Stating sacculus and use the sacculus as described in any one in claim 1-13, described support is arranged at described sacculus
Outside.
15. stent delivery systems as claimed in claim 14, it is characterised in that described sacculus straight portion
Length is more than the length of described support, and the wall thickness of described Proximal transition section and/or described distal transition is more than
The wall thickness of described sacculus straight portion.
16. stent delivery systems as claimed in claim 14, it is characterised in that described sacculus straight portion
Length is less than the length of described support, and the wall thickness of described Proximal transition section and/or described distal transition is less than
The wall thickness of described sacculus straight portion.
17. stent delivery systems as claimed in claim 14, it is characterised in that be positioned at the outer wall of said inner tube
Two developing rings or development point it is provided with at the two ends of upper correspondence described sacculus straight portion.
18. stent delivery systems as claimed in claim 17, it is characterised in that described developing ring or development point
Use roentgenopaque developing material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510154990.9A CN106137485B (en) | 2015-04-02 | 2015-04-02 | Sacculus and stent delivery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510154990.9A CN106137485B (en) | 2015-04-02 | 2015-04-02 | Sacculus and stent delivery system |
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| Publication Number | Publication Date |
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| CN106137485A true CN106137485A (en) | 2016-11-23 |
| CN106137485B CN106137485B (en) | 2018-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510154990.9A Active CN106137485B (en) | 2015-04-02 | 2015-04-02 | Sacculus and stent delivery system |
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| CN112494785A (en) * | 2020-12-03 | 2021-03-16 | 广东博迈医疗器械有限公司 | Balloon catheter with novel structure |
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| Publication number | Publication date |
|---|---|
| CN106137485B (en) | 2018-11-09 |
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