CN208974229U - Intravascular stent conveying device and its system - Google Patents
Intravascular stent conveying device and its system Download PDFInfo
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- CN208974229U CN208974229U CN201820723985.4U CN201820723985U CN208974229U CN 208974229 U CN208974229 U CN 208974229U CN 201820723985 U CN201820723985 U CN 201820723985U CN 208974229 U CN208974229 U CN 208974229U
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Abstract
The utility model relates to the field of medical instrument technology more particularly to a kind of intravascular stent conveying device and its systems.The intravascular stent conveying device is used to convey the intravascular stent including main support portion, the first sub-stent portion and the second sub-stent portion；Including outer tube, middle pipe and sub-stent guide member；The slidable housing of outer tube is on middle pipe；The both ends of sub-stent guide member are provided with sub-stent guide groove and sub-stent seal wire；Intravascular stent can be arranged in outer tube；Main support portion and the first sub-stent portion can housing on middle pipe, main support portion and the first sub-stent portion are located between the first positioning ring and the second positioning ring of middle pipe setting；Second sub-stent portion can be arranged in inside sub-stent guide groove.The intravascular stent transportation system includes intravascular stent and intravascular stent conveying device.The purpose of this utility model is to provide intravascular stent conveying device and its systems, with the structure of existing two brackets for being sent into bifurcated lesions blood vessel of simplification, and can simplify surgical operation step.
Description
Technical field
The utility model relates to the field of medical instrument technology more particularly to a kind of intravascular stent conveying device and its systems.
Background technique
Intravascular stent refers to that on the basis of the forming of lumen balloon expandable, it is narrow to reach support to be placed in inner support in lesion
Narrow occlusion section blood vessel reduces blood vessel elasticity retraction and moulding again, the purpose for keeping lumen blood flow unobstructed.Part inner support also has
The effect of pre- anti-restenosis.
It is not only to be confined at one, but be located at blood vessel at the hemadostewnosis of many patients in actual clinic
Many places.A kind of common many places arteriarctia is exactly bifurcated lesions blood vessel.2 brackets are distinguished using Crash technology at present
It is sent into main blood vessel and branch vessel；Such as be sent into main blood vessel main support and be sent into branch vessel branch stent arrive simultaneously
Position, branch stent is discharged in advance, discharges main support after withdrawing from the sacculus and seal wire of branch stent, last seal wire passes through bracket net
Hole carries out sacculus to kiss technology after entering branch.
However the Crash technical operation is complicated, increases the risk of operation.
Therefore, the application provides a kind of new intravascular stent conveying device and its system regarding to the issue above, existing to simplify
There is the structure for two brackets for being sent into bifurcated lesions blood vessel, and can simplify surgical operation step.
Utility model content
The purpose of this utility model is to provide intravascular stent conveying devices, with the existing feeding bifurcated lesions blood vessel of simplification
The structure of two brackets, and can simplify surgical operation step.
The purpose of this utility model, which also resides in, provides intravascular stent transportation system, with the existing feeding bifurcated lesions blood vessel of simplification
Two brackets structure, and can simplify surgical operation step.
Based on above-mentioned first purpose, intravascular stent conveying device provided by the utility model, the intravascular stent for conveying；
The intravascular stent includes main support portion, the first sub-stent portion and the second sub-stent portion；The first end in first sub-stent portion and
The first end in second sub-stent portion is connected to the same end in the main support portion respectively；
The intravascular stent conveying device includes outer tube, middle pipe and sub-stent guide member；The slidable housing of outer tube exists
On the middle pipe；The middle pipe is fixedly installed the first positioning ring and the second positioning ring；First positioning ring and described second
Positioning ring is between the middle pipe and the outer tube；
The sub-stent guide member is provided with sub-stent guide groove along the axial one end of itself, and the other end is fixedly connected
Sub-stent seal wire；The sub-stent guide member is arranged between the middle pipe and the outer tube, and the sub-stent seal wire is far from institute
The outer tube is stretched out in the one end for stating sub-stent guide member；
The intravascular stent can be arranged in the outer tube；Wherein, the main support portion and first sub-stent portion
Can housing on the middle pipe, and the main support portion and first sub-stent portion are located at first positioning ring and described
Between second positioning ring；Second sub-stent portion can be arranged in inside the sub-stent guide groove.
The optional technical solution of the utility model is, the intravascular stent conveying device further includes inner tube and guide pipe,
The slidable housing of middle pipe is in said inner tube；First positioning ring is set to second positioning ring and the guiding
Between pipe；
The distal end of said inner tube is fixedly connected with the guide pipe；The guide pipe is in cone.
The optional technical solution of the utility model is that the middle pipe includes the middle pipe holder principal part and middle pipe holder being connected
Branch；The guide pipe, first positioning ring, the middle pipe holder principal part, the middle pipe holder branch and described second are determined
Position ring is set gradually；
The middle pipe holder principal part is for main support portion described in housing；The middle pipe holder branch is for described in housing first
Sub-stent portion；
The diameter of the middle pipe holder principal part is greater than the diameter of middle pipe holder branch described in housing.
The optional technical solution of the utility model is, it is recessed that the guide pipe close to one end of said inner tube is provided with guiding
Slot；The guiding groove can accommodate first positioning ring.
The optional technical solution of the utility model is that said inner tube is provided with metal developing close to one end of the guide pipe
Marker.
Based on above-mentioned second purpose, intravascular stent transportation system provided by the utility model, including intravascular stent and described
Intravascular stent conveying device, the intravascular stent connect with the intravascular stent conveying device.
The optional technical solution of the utility model is that the corresponding second end in first sub-stent portion is wedge shaped or oblique
Face, and/or, the corresponding second end in second sub-stent portion is wedge shaped or inclined-plane；
The second end in first sub-stent portion is provided with metal marker object, and/or, the second of second sub-stent portion
End is provided with metal marker object.
The optional technical solution of the utility model is that the diameter in the main support portion is 6mm-10mm；
The diameter in first sub-stent portion is 4mm-5mm；
The diameter in second sub-stent portion is 4mm-6mm.
The optional technical solution of the utility model is that the length in first sub-stent portion is longer than second sub-stent portion
Length；
Axial direction difference of the thickness of the tube wall in the main support portion along itself；
The thickness of the tube wall in first sub-stent portion along itself axial direction it is different, and/or, second sub-stent
Axial direction difference of the thickness of the tube wall in portion along itself.
The optional technical solution of the utility model is that medication coat is coated with outside the intravascular stent.
The utility model has the beneficial effects that
Intravascular stent conveying device provided by the utility model, including outer tube, middle pipe and sub-stent guide member, by by blood
The main support portion of pipe holder and the first sub-stent portion housing pass through the first positioning ring and the second positioning ring positioning master on middle pipe
Cradle portion and the first sub-stent portion can be arranged in inside sub-stent guide groove by the second sub-stent portion of intravascular stent,
And intravascular stent can be arranged in outer tube, when so that intravascular stent reaching preset bifurcated lesions blood vessel, can slide outer
Pipe is to be compressed in main support portion and the first sub-stent portion between outer tube and inner tube in the intravascular release of master, by controlling sub-stent
Seal wire, so that the second sub-stent portion enters branch vessel with sub-stent guide member and discharges in branch vessel.To sum up, the blood vessel
It is intravascular that intravascular stent is sent directly into bifurcated lesions by stent conveying device, without 2 brackets are respectively fed to main blood vessel
In branch vessel, surgical operation step can be simplified, the difficulty and risk of operation can also be reduced to a certain extent.
Intravascular stent transportation system provided by the utility model, including intravascular stent conveying device, can be by intravascular stent
It is intravascular to be sent directly into bifurcated lesions, without 2 brackets are respectively fed in main blood vessel and branch vessel, to simplify operation
Operating procedure can also reduce the difficulty and risk of operation to a certain extent.
Detailed description of the invention
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art
Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below
In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art
Under the premise of labour, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of intravascular stent conveying device provided by the embodiment of the utility model；
Fig. 2 is the first structure diagram of intravascular stent provided by the embodiment of the utility model；
Fig. 3 is the second structural schematic diagram of intravascular stent provided by the embodiment of the utility model；
Fig. 4 is the third structural schematic diagram of intravascular stent provided by the embodiment of the utility model；
Fig. 5 is the 4th structural schematic diagram of intravascular stent provided by the embodiment of the utility model.
Icon: 100- intravascular stent；110- main support portion；The first sub-stent of 120- portion；The second sub-stent of 130- portion；140-
Metal marker object；150- cell rings；160- connector；200- outer tube；It is managed in 300-；The first positioning ring of 310-；320- second is fixed
Position ring；Pipe holder principal part in 330-；Pipe holder branch in 340-；400- inner tube；500- sub-stent guide member；510- sub-stent is led
Draw groove；520- sub-stent seal wire；600- guide pipe；610- is oriented to groove.
Specific embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described
Embodiment is the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, originally
Field those of ordinary skill every other embodiment obtained without making creative work belongs to practical
Novel protected range.
It is in the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", " perpendicular
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is only
For ease of description the utility model and simplify description, rather than the device or element of indication or suggestion meaning must have it is specific
Orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.In addition, term " the
One ", " second ", " third " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
The concrete meaning of language in the present invention.
Embodiment one
Referring to shown in Fig. 1-Fig. 5, a kind of intravascular stent conveying device is present embodiments provided；Fig. 1 be the present embodiment provides
Intravascular stent conveying device structural schematic diagram；Fig. 2-Fig. 5 is the structural schematic diagram of intravascular stent.
Referring to shown in Fig. 1-Fig. 5, intravascular stent conveying device provided in this embodiment is suitable for bifurcated lesions blood vessel, especially
It is suitable for the bifurcated vessels of femoral artery,common, femoral profound artery and femoral artery,superficial.
Intravascular stent of the intravascular stent conveying device for conveying；The intravascular stent 100 includes main support portion 110, the
One sub-stent portion 120 and the second sub-stent portion 130；The first of the first end in the first sub-stent portion 120 and the second sub-stent portion 130
End is connected to the same end in main support portion 110 respectively；
The intravascular stent conveying device includes outer tube 200, middle pipe 300 and sub-stent guide member 500；Outer tube 200 is slidably
Housing on middle pipe 300；Middle pipe 300 is fixedly installed the first positioning ring 310 and the second positioning ring 320；First positioning ring 310
And second positioning ring 320 between middle pipe 300 and outer tube 200.First positioning ring 310 and the second positioning ring 320 are for example, convex
For the ring of middle pipe 300.
Sub-stent guide member 500 is provided with sub-stent guide groove 510 along the axial one end of itself, and the other end is fixed to be connected
Connect sub-stent seal wire 520；Sub-stent guide member 500 is arranged between middle pipe 300 and outer tube 200, and separate point of sub-stent seal wire 520
Outer tube 200 is stretched out in one end of bracket guide member 500；By sub-stent seal wire 520, sub-stent guide member 500 is pulled out into human body.
Intravascular stent 100 can be arranged in outer tube 200；Wherein, main support portion 110 and the first sub-stent portion 120 can
Housing is on middle pipe 300, and main support portion 110 and the first sub-stent portion 120 are located at the first positioning ring 310 and the second positioning ring
Between 320；Second sub-stent portion 130 can be arranged in inside sub-stent guide groove 510.It should be noted that intravascular stent
100 main support portion 110 and the first sub-stent are compressed between outer tube 200 and middle pipe 300, the second branch of intravascular stent 100
Frame portion 130 is compressed in inside sub-stent guide groove 510.
Intravascular stent conveying device described in the present embodiment, including outer tube 200, middle pipe 300 and sub-stent guide member 500,
By the way that the main support portion 110 of intravascular stent 100 and 120 housing of the first sub-stent portion are positioned on middle pipe 300, and by first
Ring 310 and the second positioning ring 320 positioning main support portion 110 and the first sub-stent portion 120, pass through second point of intravascular stent 100
Cradle portion 130 can be arranged in inside sub-stent guide groove 510 and intravascular stent 100 can be arranged in outer tube 200,
When so that intravascular stent 100 reaching preset bifurcated lesions blood vessel, outer tube 200 can be slided to be compressed in the intravascular release of master
Main support portion 110 and the first sub-stent portion 120 between outer tube 200 and middle pipe 300, by controlling sub-stent seal wire 520, so that
Second sub-stent portion 130 enters branch vessel with sub-stent guide member 500 and discharges in branch vessel.To sum up, the blood vessel branch
It is intravascular that intravascular stent 100 is sent directly into bifurcated lesions by frame conveying device, without 2 brackets are respectively fed to main blood vessel
In branch vessel, surgical operation step can be simplified, the difficulty and risk of operation can also be reduced to a certain extent.
For example, the bilateral femoral arterial in patient is dissected respectively, sub-stent seal wire 520 is sent into from side solution groove, from right
Side solves groove and pulls out；Intravascular stent conveying device is sent into diseased region along ipsilateral solution groove, is then pulled outwardly outer tube 200,
Main support portion 110 and the first sub-stent portion 120 are released in main blood vessel；Sub-stent seal wire 520 is drawn to external, until complete
It is complete to pull out in vitro, by the release of the second sub-stent portion 130 in branch vessel.
In the optinal plan of the present embodiment, the intravascular stent conveying device includes inner tube 400 and guide pipe 600, middle pipe
300 slidable housings are in inner tube 400；First positioning ring 310 is set between the second positioning ring 320 and guide pipe 600；
The distal end of inner tube 400 is fixedly connected with guide pipe 600；Guide pipe 600 is in cone.By in conical guide pipe
600, it is intravascular in order to enter intravascular stent conveying device, and then it is convenient for delivery of vascular bracket 100.By inner tube 400, with
Convenient for the objects such as seal wire are arranged into inner tube 400.
In the optinal plan of the present embodiment, middle pipe 300 includes the middle pipe holder principal part 330 being connected and middle pipe holder branch
340；Guide pipe 600, the first positioning ring 310, middle pipe holder principal part 330, middle pipe holder branch 340 and the second positioning ring 320 according to
Secondary setting.
Middle pipe holder principal part 330 is used for housing main support portion 110；Middle pipe holder branch 340 is used for the first sub-stent of housing
Portion 120.
The diameter of middle pipe holder principal part 330 is greater than the diameter of pipe holder branch 340 in housing；In order to middle pipe 300 and blood
The shape in the main support portion 110 of pipe holder 100 and the first sub-stent portion 120 is adapted, to be preferably socketed intravascular stent 100
Main support portion 110 and the first sub-stent portion 120.
In the optinal plan of the present embodiment, guide pipe 600 is provided with guiding groove 610 close to one end of inner tube 400；Guiding
Groove 610 can accommodate the first positioning ring 310.By being oriented to groove 610, so that middle pipe 300 preferably connects with guide pipe 600
It connects.
In the optinal plan of the present embodiment, inner tube 400 is provided with metal developing marker close to one end of guide pipe 600.
By metal developing marker, the position of blood vessel is entered in order to identify inner tube 400 close to one end of guide pipe 600.
The present embodiment additionally provides a kind of intravascular stent transportation system, including intravascular stent 100 and intravascular stent above-mentioned
Conveying device.Intravascular stent is connect with intravascular stent conveying device.Optionally, intravascular stent 100 is suitable for bifurcated lesions blood vessel,
It is particularly suitable for the bifurcated vessels of femoral artery,common, femoral profound artery, femoral artery,superficial.
Optionally, the corresponding second end in the first sub-stent portion 120 is wedge shaped or inclined-plane, and/or, the second sub-stent portion
130 corresponding second ends are wedge shaped or inclined-plane.That is, the corresponding second end in the first sub-stent portion 120 it is wedge shaped or
Inclined-plane；Alternatively, the corresponding second end in the second sub-stent portion 130 is wedge shaped or inclined-plane；Alternatively, the first sub-stent portion 120 is corresponding
The corresponding second end in the wedge shaped perhaps inclined-plane of second end and the second sub-stent portion 130 is wedge shaped or inclined-plane.Fig. 2 and Fig. 4
The second end for showing the first sub-stent portion 120 is wedge shaped, and the second end in the second sub-stent portion 130 is wedge shaped；Fig. 3 show
The second end in one sub-stent portion 120 is in inclined-plane, and the second end in the second sub-stent portion 130 is in inclined-plane.
Optionally, the angle of inclined-plane and the axial direction in the first sub-stent portion 120 is between 0~90 degree, alternatively, inclined-plane with
The angle of the axial direction in the second sub-stent portion 130 is between 0~90 degree.Preferably, the axis on inclined-plane and the first sub-stent portion 120
It is 45 degree to the angle in direction, alternatively, the angle of inclined-plane and the axial direction in the second sub-stent portion 130 is 45 degree.
Intravascular stent described in the present embodiment includes main support portion 110, the first sub-stent portion 120 and the second sub-stent portion
130 namely intravascular stent be branch type, with bifurcated lesions shape of blood vessel be adapted, can directly be sent by the intravascular stent
It is intravascular to enter bifurcated lesions, without 2 brackets are respectively fed in main blood vessel and branch vessel, operation behaviour can be simplified
Make step.By the corresponding second end in the first sub-stent portion 120 is wedge shaped or inclined-plane and/or the second sub-stent portion 130 it is corresponding
Second end is wedge shaped or inclined-plane, it is preset in order to which the first sub-stent portion 120 and/or the second sub-stent portion 130 to be sent into
In bifurcated vessels, to reduce the difficulty of operation, the risk of operation is reduced.To sum up, the intravascular stent structure is relatively easy, Neng Goujian
Change surgical operation step.
Shown in Figure 4, in the optinal plan of the present embodiment, the second end in the first sub-stent portion 120 is provided with metal mark
Remember object 140, and/or, the second end in the second sub-stent portion 130 is provided with metal marker object 140.That is, the first sub-stent
The second end in portion 120 is provided with metal marker object 140；Alternatively, the second end in the second sub-stent portion 130 is provided with metal marker object
140；Alternatively, the second end in the first sub-stent portion 120 is provided with the second of metal marker object 140 and the second sub-stent portion 130
End is provided with metal marker object 140.Preferably, the second end in the first sub-stent portion 120 is provided with metal marker object 140, and
The second end in the second sub-stent portion 130 is provided with metal marker object 140, comes in order to which metal marker object 140 develops under X-ray
The specific location of the second end in the first sub-stent portion 120, the second end in the second sub-stent portion 130 is identified, in order to discharge blood vessel
Bracket, so that intravascular stent can more accurately be discharged into the predeterminated position of lesion vessels.
In the optinal plan of the present embodiment, the quantity of metal marker object 140 is multiple.
Optionally, the second end in the first sub-stent portion 120 uniformly distributed has multiple metal marker objects along the circumferential direction of itself
140.The second end in the first sub-stent portion 120 for example can be with along the quantity of the uniformly distributed metal marker object 140 of the circumferential direction of itself
It is 2,3,4,6 etc..
Optionally, the second end in the second sub-stent portion 130 uniformly distributed has multiple metal marker objects along the circumferential direction of itself
140.The second end in the second sub-stent portion 130 for example can be with along the quantity of the uniformly distributed metal marker object 140 of the circumferential direction of itself
It is 2,3,4,6 etc..
Optionally, the junction in the first sub-stent portion 120 and the second sub-stent portion 130 and main support portion 110 is provided with gold
Belong to marker 140, in order to discharge intravascular stent, so that intravascular stent can more accurately be discharged into the default of lesion vessels
Position.
Optionally, main support portion 110 is provided with metal marker object 140 far from the one end in the first sub-stent portion 120.
In the optinal plan of the present embodiment, main support portion 110, the first sub-stent portion 120 and the second sub-stent portion 130 are wrapped
Include multiple cell rings 150 and connector 160.
It is connected between adjacent cells ring 150 by connector 160.
Axial direction row of multiple cell rings 150 along main support portion 110, the first sub-stent portion 120 or the second sub-stent portion 130
Column.Optionally, cell rings 150 are made of medical alloy material；Further, cell rings 150 be by medical alloy material into
Row bending is formed by Z-shaped configuration or braiding structure.
Optionally, the material of cell rings 150 is niti-shaped memorial alloy, NiTi superelastic alloy, cobalt chromium dynamax
Or 316L medical stainless steel alloy；It will be appreciated by persons skilled in the art that cell rings 150 can also use other materials
Material.Wherein, 316L medical stainless steel alloy is the most frequently used in the medical surgery and maximum implantable metal material of usage amount, usually
It is made of vacuum metling, corrosion resistance is preferable；Niti-shaped memorial alloy has stronger wear-resisting, corrosion resistance, tissue
Compatibility is good, and long-term merging has no toxic side effect in vivo, can substantially reduce thrombosis to a certain extent.
In the optinal plan of the present embodiment, the cell rings 150 in the first sub-stent portion 120 and the second sub-stent portion 130 it is close
Degree is greater than the density of the cell rings 150 in main support portion 110；In order to which the first sub-stent portion 120 and the second sub-stent portion 130 is defeated
It send to preset lesion locations.
In the optinal plan of the present embodiment, main support portion 110, the first sub-stent portion 120 and the second sub-stent portion 130 are wrapped
Include set film layer (not shown).
Film layer housing is covered in the outside of multiple cell rings 150.
The material for covering film layer is medical macromolecular materials；Optionally, medical macromolecular materials can for example spin for polyamide
Fabric, polypropylene spun fabric, polyester woven object, polytetrafluoroethylene (PTFE) etc..
In the optinal plan of the present embodiment, the diameter in main support portion 110 is 6mm-10mm.
Optionally, the diameter in the first sub-stent portion 120 is 4mm-5mm.
Optionally, the diameter in the second sub-stent portion 130 is 4mm-6mm.
In the optinal plan of the present embodiment, the length in the first sub-stent portion 120 is longer than the length in the second sub-stent portion 130.
In the optinal plan of the present embodiment, the thickness of the tube wall in main support portion 110 along itself axial direction it is different；So that
The biggish position of pipe thickness ensure that intravascular stent support strength with higher and good development effect, to be placed in blood vessel
Bracket provides good guarantee；At the lesser position of pipe thickness, compression strength is low, and the soft of intravascular stent can be improved
It is pliable, it can be good at complying with the shape of blood vessel after intravascular stent expansion.
Optionally, the thickness of the tube wall in main support portion 110 is along the axial direction of itself in regular variation.
Optionally, the thickness of the tube wall in the first sub-stent portion 120 is different along the axial direction of itself.Optionally, first point
The thickness of the tube wall of cradle portion 120 is in regular variation along the axial direction of itself.
Optionally, the thickness of the tube wall in the second sub-stent portion 130 is different along the axial direction of itself.Optionally, second point
The thickness of the tube wall of cradle portion 130 is in regular variation along the axial direction of itself.
In order to more be apparent from the present embodiment, citing is illustrated.Such as main support portion 110 is total for being placed on stock
At artery, the first sub-stent portion 120 is for being placed at femoral profound artery, and the second sub-stent portion 130 is for being placed on femoral artery,superficial
Place.The length in the first sub-stent portion 120 is longer than the length in the second sub-stent portion 130；The diameter in the first sub-stent portion 120 be less than or
Person is equal to the diameter in the second sub-stent portion 130.
Optionally, medication coat is coated with outside intravascular stent 100.By medication coat, so that intravascular stent is with specific
Therapeutic effect.
Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the utility model, rather than it is limited
System；Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should
Understand: it is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of
Technical characteristic is equivalently replaced；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution, and this is practical new
The range of each embodiment technical solution of type.
Claims (10)
1. a kind of intravascular stent conveying device, which is characterized in that the intravascular stent for conveying；The intravascular stent includes main support
Portion, the first sub-stent portion and the second sub-stent portion；The of the first end in first sub-stent portion and second sub-stent portion
One end is connected to the same end in the main support portion respectively；
The intravascular stent conveying device includes outer tube, middle pipe and sub-stent guide member；The slidable housing of outer tube is described
On middle pipe；The middle pipe is fixedly installed the first positioning ring and the second positioning ring；First positioning ring and second positioning
Ring is between the middle pipe and the outer tube；
The sub-stent guide member is provided with sub-stent guide groove along the axial one end of itself, and the other end is fixedly connected with branch
Frame seal wire；The sub-stent guide member is arranged between the middle pipe and the outer tube, and the sub-stent seal wire is far from described point
The outer tube is stretched out in one end of bracket guide member；
The intravascular stent can be arranged in the outer tube；Wherein, the main support portion and first sub-stent portion can
Housing is on the middle pipe, and the main support portion and first sub-stent portion are located at first positioning ring and described second
Between positioning ring；Second sub-stent portion can be arranged in inside the sub-stent guide groove.
2. intravascular stent conveying device according to claim 1, which is characterized in that it further include inner tube and guide pipe, it is described
The middle slidable housing of pipe is in said inner tube；First positioning ring be set to second positioning ring and the guide pipe it
Between；
The distal end of said inner tube is fixedly connected with the guide pipe；The guide pipe is in cone.
3. intravascular stent conveying device according to claim 2, which is characterized in that the middle pipe includes the middle pipe being connected
Bracket principal part and middle pipe holder branch；The guide pipe, first positioning ring, the middle pipe holder principal part, the middle pipe branch
Frame branch and second positioning ring are set gradually；
The middle pipe holder principal part is for main support portion described in housing；The middle pipe holder branch is for the first branch described in housing
Frame portion；
The diameter of the middle pipe holder principal part is greater than the diameter of middle pipe holder branch described in housing.
4. intravascular stent conveying device according to claim 2, which is characterized in that the guide pipe is close to said inner tube
One end is provided with guiding groove；The guiding groove can accommodate first positioning ring.
5. intravascular stent conveying device according to claim 2, which is characterized in that said inner tube is close to the guide pipe
One end is provided with metal developing marker.
6. a kind of intravascular stent transportation system, which is characterized in that including intravascular stent and the described in any item blood of claim 1-5
Pipe holder conveying device, the intravascular stent are connect with the intravascular stent conveying device.
7. intravascular stent transportation system according to claim 6, which is characterized in that first sub-stent portion corresponding
Two ends are wedge shaped or inclined-plane, and/or, the corresponding second end in second sub-stent portion is wedge shaped or inclined-plane；
The second end in first sub-stent portion is provided with metal marker object, and/or, the second end in second sub-stent portion is set
It is equipped with metal marker object.
8. intravascular stent transportation system according to claim 6, which is characterized in that the diameter in the main support portion is 6mm-
10mm；
The diameter in first sub-stent portion is 4mm-5mm；
The diameter in second sub-stent portion is 4mm-6mm.
9. intravascular stent transportation system according to claim 6, which is characterized in that the length in first sub-stent portion is long
Length in second sub-stent portion；
Axial direction difference of the thickness of the tube wall in the main support portion along itself；
The thickness of the tube wall in first sub-stent portion along itself axial direction it is different, and/or, second sub-stent portion
Axial direction difference of the thickness of tube wall along itself.
10. intravascular stent transportation system according to claim 6, which is characterized in that be coated with medicine outside the intravascular stent
Object coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820723985.4U CN208974229U (en) | 2018-05-15 | 2018-05-15 | Intravascular stent conveying device and its system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN113397777A (en) * | 2020-03-16 | 2021-09-17 | 施吉生技应材股份有限公司 | Blood vessel stent marker setting device and setting method thereof |
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