CN207545605U - A kind of microtubular - Google Patents
A kind of microtubular Download PDFInfo
- Publication number
- CN207545605U CN207545605U CN201720382621.XU CN201720382621U CN207545605U CN 207545605 U CN207545605 U CN 207545605U CN 201720382621 U CN201720382621 U CN 201720382621U CN 207545605 U CN207545605 U CN 207545605U
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- elastic tube
- microtubular
- pipe shaft
- outer diameter
- pipe
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Abstract
The utility model discloses a kind of microtubulars, including pipe shaft, pipe shaft distal end is connected with elastic tube extend along the pipe shaft, the elastic tube can radial dilatation to increase the internal diameter of the elastic tube, outer diameter is less than the outer diameter of the pipe shaft during elastic tube retraction.During operation, elastic tube is in retracted state, outer diameter is less than the outer diameter of pipe shaft, the difficulty across stenotic lesion position is reduced, across after diseased region, stent reaches elastic tube by pipe shaft, elastic tube is expanded in expansion state, and internal diameter increase passes through convenient for stent, a kind of microtubular is only used, reduces operating difficulty.
Description
Technical field
The utility model is related to medical instruments field, more particularly to a kind of microtubular.
Background technology
At present, the main method for the treatment of hemadostewnosis is rack forming art in intravascular, which needs micro- to lead one
Pipe initially passes through stenotic lesion position and reaches diseased region distal end, then passes through microtubular inner cavity delivering stent.
Microtubular used in existing rack forming art is because of the particularity of diseased region, it is not possible to which too thick, too thick is micro-
Conduit is difficult to across diseased region, while microtubular also can not be too thin, and otherwise stent is difficult to through microtubular inner cavity.Existing product
It generally can not all consider two above problem in design, thus the microtubular for applying two kinds of internal diameters different during operation,
It is used alternatingly, operating difficulty is higher.
Therefore, how to provide it is a kind of reduce across stenotic lesion position difficulty simultaneously convenient for stent by microtubular be
The current technical issues that need to address of field technology personnel.
Utility model content
The purpose of this utility model is to provide a kind of microtubular, reduces across stenotic lesion position difficulty while convenient for stent
Pass through, reduce operating difficulty.
In order to solve the above technical problems, the utility model provides a kind of microtubular, including pipe shaft, the pipe shaft distal end connects
Have an elastic tube extended along the pipe shaft, the elastic tube can radial dilatation to increase the internal diameter of the elastic tube, the bullet
Property pipe retraction when outer diameter be less than the pipe shaft outer diameter.
Preferably, the pipe shaft proximal end is connected with connector, and the pipe shaft is provided with strain relief with the joint
Casing.
Preferably, the pipe shaft includes the internal layer, middle level and the outer layer that are set with successively from inside to outside, and the internal layer is specially poly-
Tetrafluoroethene pipe, the middle level include steel wire and/or helical spring, and the outer layer is specially nylon elastic pipe.
Preferably, the hardness of the outer layer by proximal end to distally gradually softening.
Preferably, the distal end of the elastic tube is provided with development indicating.
Preferably, outer rim uniform annular distribution of multiple development indicatings along the elastic tube distal end.
Preferably, which is characterized in that be provided with lubricious strip on the elasticity inside pipe wall, the lubricious strip is along the elastic tube
Extension.
Preferably, the uniform annular distribution in the inner edge of the lubricious strip along the elastic tube.
Preferably, the lubricious strip is specially lubricating polymer item.
Preferably, the elastic tube and the lubricious strip hot-melt adhesive paste.
The utility model provides a kind of microtubular, and including pipe shaft, pipe shaft distal end is connected with the elastic tube extended along pipe shaft, bullet
Property pipe can radial dilatation to increase the internal diameter of elastic tube, outer diameter is less than the outer diameter of pipe shaft when elastic tube bounces back.During operation, elasticity
Pipe is in retracted state, and outer diameter is less than the outer diameter of pipe shaft, reduces the difficulty across stenotic lesion position, across after diseased region,
Stent reaches elastic tube by pipe shaft, and elastic tube is expanded in expansion state, and internal diameter increase passes through convenient for stent, only makes
With a kind of microtubular, operating difficulty is reduced.
Description of the drawings
Fig. 1 is a kind of structure diagram of specific embodiment of microtubular provided by the utility model；
Fig. 2 is a kind of operating diagram of specific embodiment of microtubular provided by the utility model；
Installation signals of the Fig. 3 for development indicating in a kind of specific embodiment of microtubular provided by the utility model
Figure；
Scheme of installation of the Fig. 4 for lubricious strip in a kind of specific embodiment of microtubular provided by the utility model.
Specific embodiment
The core of the utility model is to provide a kind of microtubular, reduces across stenotic lesion position difficulty while convenient for stent
Pass through, reduce operating difficulty.
In order to which those skilled in the art is made to more fully understand the utility model, below in conjunction with the accompanying drawings and it is embodied
The utility model is described in further detail for mode.
It please refers to Fig.1 to Fig. 4, Fig. 1 is a kind of structure of specific embodiment of microtubular provided by the utility model
Schematic diagram；Fig. 2 is a kind of operating diagram of specific embodiment of microtubular provided by the utility model；Fig. 3 is this reality
With the scheme of installation for indicating of developing in a kind of specific embodiment of novel provided microtubular；Fig. 4 is the utility model
The scheme of installation of lubricious strip in a kind of specific embodiment of the microtubular provided.
The microtubular that specific embodiment of the present invention provides, including pipe shaft 1,1 distal end of pipe shaft, which is connected with along pipe shaft 1, prolongs
The elastic tube 2 stretched, elastic tube 2 can radial dilatation to increase the internal diameter of elastic tube 2, outer diameter is less than pipe shaft 1 when elastic tube 2 bounces back
Outer diameter.Wherein distal end is the front end of microtubular direction of advance.Elastic tube 2 and pipe shaft 1 are connect by the modes such as welding or heating.
Specifically, 1 proximal end of pipe shaft is connected with connector 3, and pipe shaft 1 is provided with strain relief casing 4 with 3 junction of connector.Pipe
1 inner cavity of body can facilitate microcatheter delivery to target blood by micro-wire.Its internal diameter be 0.42~1.67mm, outer diameter 0.55
~1.85mm, effective length (not including connector 3 and strain relief casing 4) is 120cm~190cm.
Pipe shaft 1 includes the internal layer, middle level and the outer layer that are set with successively from inside to outside, and internal layer is specially polyfluortetraethylene pipe, is made
Obtaining inner wall has smaller frictional resistance.Middle level adds helical spring for steel wire or helical spring or steel wire, and steel wire is with directly
Stainless steel wire, tungsten filament or the NITI thread of 0.01~0.1mm of diameter, PPI are 25~120.Steel wire is ensureing mapping microtubular
Handling, the helical spring stainless steel wire of 0.01~0.1mm of diameter, tungsten filament or NITI filament windings are made, screw pitch for 0.012~
0.13mm, outer diameter are 0.45~1.76mm, and helical spring ensures the fracture resistance of mapping microtubular, can also increase X-ray visuality.
The a variety of reinforcement modes of middle layer are combined, and while ensureing that microtubular is handling, also provide good compliance.Outer layer has
Body uses nylon, the nylon elastomer of block polyamide or polyurethane PU as material.
The outer layer segmentation of pipe shaft 2 using different hardness polymer material, make the hardness of microtubular in an axial direction by proximal end extremely
Distal end classification softens gradually, and proximal end has good push and twisting property, and distal end is softer, and compliance is good, can be in complexity
It is intravascular freely to convey, avoid damage to blood vessel.
During operation, elastic tube 2 is in retracted state, and outer diameter is less than the outer diameter of pipe shaft 1, reduces across stenotic lesion position
Difficulty, across after diseased region, stent 7 reaches elastic tube 2 by pipe shaft 1, and elastic tube 2 is expanded in expansion state, in
Diameter increases, and passes through convenient for stent 7, only uses a kind of microtubular, reduce operating difficulty.
It, can be in the case where the distal end outer rim of elastic tube 2 be equipped with X ray in the microtubular that specific embodiment of the present invention provides
The development indicating 5 that can develop, development indicating 5 is in small point-like, a diameter of 0.05~0.3mm, and multiple development indicatings 5 are along stretch section 1
Outer circumference in uniform annular distribution, the quantitative design of development indicating 5 is 5~15, is closed using platinum, platinum alloy, gold, NiTi
Gold or stainless steel are connect by the modes such as welding or heating with elastic tube 2.
On the basis of the microtubular provided in above-mentioned each specific embodiment, lubricious strip 6 is provided on 2 inner wall of elastic tube,
Lubricious strip 6 extends along elastic tube 2.Resistance when can reduce instrument by 2 inner cavity of elastic tube, elastic tube 2 are the elasticity of plasticity
Body material.Lubricious strip 6 is designed to strip, and the inner edge week along elastic tube 2 is in uniform annular distribution.Elastic tube 2 and lubricious strip 6
Hot-melt adhesive paste.The reset condition of elastic tube 2, i.e., internal diameter is 0.38~1.02mm when unexpanded, and outer diameter is 0.45~1.1mm；Bullet
Property 2 expansion state of pipe maximum inner diameter for 0.42~1.67mm, outer diameter is 0.49~1.75mm；The length 20 of elastic tube~
100mm。
The material and size of each component can be according to circumstances adjusted, are within the protection scope of the utility model.
Microtubular provided by the utility model is described in detail above.Specific case used herein is to this
The principle and embodiment of utility model is expounded, and the explanation of above example is only intended to help to understand the utility model
Method and its core concept.It should be pointed out that for those skilled in the art, it is new not departing from this practicality
Under the premise of type principle, can also to the utility model, some improvement and modification can also be carried out, these improvement and modification also fall into this reality
With in novel scope of the claims.
Claims (10)
1. a kind of microtubular, including pipe shaft (1), which is characterized in that the pipe shaft (1), which is distally connected with along the pipe shaft (1), prolongs
The elastic tube (2) stretched, the elastic tube (2) can radial dilatation to increase the internal diameter of the elastic tube (2), the elastic tube
(2) outer diameter is less than the outer diameter of the pipe shaft (1) when bouncing back.
2. microtubular according to claim 1, which is characterized in that pipe shaft (1) proximal end is connected with connector (3), described
Pipe shaft (1) is provided with strain relief casing (4) with the connector (3) junction.
3. microtubular according to claim 1, which is characterized in that the pipe shaft (1) including what is be set with successively from inside to outside
Internal layer, middle level and outer layer, the internal layer are specially polyfluortetraethylene pipe, and the middle level includes steel wire and/or helical spring, institute
It is specially nylon elastic pipe to state outer layer.
4. microtubular according to claim 3, which is characterized in that the hardness of the outer layer is by proximal end to distally gradually becoming
It is soft.
5. microtubular according to claim 1, which is characterized in that the distal end of the elastic tube (2) is provided with development indicating
(5)。
6. microtubular according to claim 5, which is characterized in that multiple development indicatings (5) are along the elastic tube (2)
The uniform annular distribution of outer rim of distal end.
7. according to the microtubular described in claim 1 to 6 any one, which is characterized in that set on elastic tube (2) inner wall
There is lubricious strip (6), the lubricious strip (6) extends along the elastic tube (2).
8. microtubular according to claim 7, which is characterized in that inner edge of the lubricious strip (6) along the elastic tube (2)
Uniform annular distribution.
9. microtubular according to claim 8, which is characterized in that the lubricious strip (6) is specially lubricating polymer item.
10. microtubular according to claim 9, which is characterized in that the elastic tube (2) and the lubricious strip (6) hot melt
Connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720382621.XU CN207545605U (en) | 2017-04-12 | 2017-04-12 | A kind of microtubular |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720382621.XU CN207545605U (en) | 2017-04-12 | 2017-04-12 | A kind of microtubular |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207545605U true CN207545605U (en) | 2018-06-29 |
Family
ID=62672339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720382621.XU Active CN207545605U (en) | 2017-04-12 | 2017-04-12 | A kind of microtubular |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207545605U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109999316A (en) * | 2019-04-29 | 2019-07-12 | 南通伊诺精密塑胶导管有限公司 | A kind of blood vessel microtubular with developing mark function |
-
2017
- 2017-04-12 CN CN201720382621.XU patent/CN207545605U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109999316A (en) * | 2019-04-29 | 2019-07-12 | 南通伊诺精密塑胶导管有限公司 | A kind of blood vessel microtubular with developing mark function |
| CN109999316B (en) * | 2019-04-29 | 2021-05-28 | 南通伊诺精密塑胶导管有限公司 | Blood vessel micro-catheter with developing and marking functions |
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