CN208591176U - A kind of aortic valve stent transportation system and aortic valve systems - Google Patents
A kind of aortic valve stent transportation system and aortic valve systems Download PDFInfo
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- CN208591176U CN208591176U CN201721155153.9U CN201721155153U CN208591176U CN 208591176 U CN208591176 U CN 208591176U CN 201721155153 U CN201721155153 U CN 201721155153U CN 208591176 U CN208591176 U CN 208591176U
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- aortic valve
- balloon expandable
- bracket
- stent
- sacculus
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Abstract
The utility model relates to a kind of aortic valve stent transportation system and aortic valve systems, including the push release device for conveying aortic valve stent, especially, aortic valve stent transportation system further includes the special-shaped foley's tube that push release device front end is arranged in, special-shaped foley's tube includes sacculus, the balloon expandable portion that sacculus has column interconnecting piece and is connected to column interconnecting piece, column interconnecting piece is connect with the front end of push release device, sacculus is designed to: the balloon expandable portion forms positioning surface in the side close to the column interconnecting piece after expansion, when using aortic valve stent transportation system, the balloon expandable portion of the sacculus is located in left ventricular outflow tract and is fitted closely by the bottom of positioning surface and human aortic valve, play the role of positioning and reduction and/or prevents perivalvular leakage.
Description
Technical field
The utility model belongs to medical instruments field, and in particular to a kind of aortic valve systems and its bracket delivery system
System.
Background technique
With the development trend of China's aging society, old valve retrogression pathological changes disease incidence is continuously increased, wherein leading
Arterial valve is narrow to be increasingly becoming the most common valvular heart disease of this crowd.To severe aortic stenosis patient, surgery
Aortic valve replacement be once uniquely can with the treatment means of extending life, but gerontal patient often because of advanced age, constitution is weak, lesion
Weight merges Other diseases and avoids performing the operation.The statistics of developed country show about 1/3 severe aortic stenosis in patients because
Operation risk is high or has contraindication and can not receive traditional surgery open chest surgery.It is high-risk for these or have cardiac surgery operation taboo
The patient avoided then can be used as a kind of effective treatment means through conduit aorta petal implantation now.The technology is dynamic by stock
Arteries and veins is sent into interposing catheter, and heart valve prosthesis is delivered to aortic area and is opened, to complete artificial valve merging, restores valve
Film function.Operation is without opening chest, thus wound is small, post-operative recovery is fast.However the operation of this intervention operation is extremely complex, is facing
The technical problems such as the complication height of perioperative are equally faced in bed practice.
The artificial valve that aortic valve systems generally include bracket and are connected on bracket.It is currently in listing and clinic
The bracket of the aortic valve systems of research is divided into self-expandable stent, balloon expandable stent, mechanical expansion formula bracket.Self-inflated
The advantage of bracket is that pressure gradient is small after valve release, the advantages such as retardance is passed to incidence is low, the disadvantage is that alignment is poor, swollen when releasing
Swollen bad, location difficulty, easily slippage etc. lead to perivalvular leakage and centrality leakage, block, valve slippage；Balloon expandable
Formula bracket, mechanical expansion formula bracket are mainly location difficulty, and valve open area is small after there is release, and pressure gradient is big etc. asks
Topic.All valve brackets are not suitable for aortic incompetence trouble because fixation problem is only applicable to aortic stenosis in patients
Person.
In the prior art, researcher has made various effort and has gone the improvement for carrying out aortic valve stent to solve
One or more problems in the above problem, however effect is undesirable.Such as patent US7445631 discloses a aorta
Valve braided support is fixed by the made skirt of macromolecule or pericardium material by being bonded bracket grid in frame bottom to slow
Perivalvular leakage is solved, such design can play the role of certain anti-perivalvular leakage, but loading sheath is larger, to will limit its application.
Such as patent EP1980220 discloses a aortic valve stent conveyed through the apex of the heart, is reached by clamping former calcified valves
To the effect for reducing perivalvular leakage, nevertheless, when the gap of the calcified valves of patient's script is irregular or does not close up, the design
It will be unable to improve perivalvular leakage situation；Moreover, clinical effectiveness also indicates that this design will lead to the raising of patient's pressure gradient, influence to treat
Effect.A kind of aorta ascendens inner cavity insulation bracket with the fixed capsule of filled-type is disclosed in patent CN201120022195,
The outside of overlay film straight tube bracket sutures or is bonded with the fixed capsule of filled-type, intracapsular that water-absorbing material is housed, and can inhale in the blood vessels
Water expansion prevents displacement to play the role of fixed bracket.The water-absorbing material can also be used to prevent the side of perivalvular leakage
In case, but have a disadvantage in that the rate for being unable to control water suction, once and these water-absorbing materials leak into outside capsule, then can bring
Huge risk jeopardizes patient vitals' safety.Patent WO2013012801 describes a kind of intervention heart valve bracket, the bottom of at
Polymeric seal unit is fixed in or beyond portion's grid, to the sky between the Stent Implantation after stent expansion discharges and tissue ring
In gap.The problem of bracket essentially consists in: there are bottlenecks for the thickness of polymeric seal unit, and the too thick loading that will lead to is difficult, too
Thin then recovery of shape power is extremely limited, is unable to reach desired effect；The sealing unit compliance of use is insufficient, cannot fill up automatically
The recess portion of irregular tissue ring, and valve frame can be oppressed by sealing unit by organizing ring convex portion instead, to influence the closure of valve
Form and haemodynamics even result in more serious perivalvular leakage.
Although the orientation problem and valve of existing aortic valve stent are all in conclusion having made various effort
The problem of leakage, is not still well solved.And existing all valve brackets can be only applicable to lead because of orientation problem
The narrow patient of arterial valve, is not suitable for aortic incompetence patient.
Summary of the invention
The utility model aim is to solve the orientation problem of existing aortic valve stent, provides a kind of improved active
Arteries and veins valve bracket transportation system and aortic valve systems comprising the aortic valve stent transportation system.
In order to solve the above technical problems, a kind of technical solution that the utility model uses is:
A kind of aortic valve stent transportation system, including the push release device for conveying aortic valve stent,
In particular, aortic valve stent transportation system further includes the special-shaped foley's tube that push release device front end is arranged in, abnormity
Foley's tube includes sacculus, the balloon expandable portion that sacculus has column interconnecting piece and is connected to column interconnecting piece, column interconnecting piece
Connect with the front end of push release device, sacculus is designed to: the balloon expandable portion is close to the column after expansion
The side of shape interconnecting piece forms positioning surface, when using aortic valve stent transportation system, the balloon expandable position of the sacculus
Fitted closely in left ventricular outflow tract and by the bottom of positioning surface and human aortic valve, play positioning and reduce and/
Or prevent the effect of perivalvular leakage.According to the utility model, the positioning surface can be it is generally planar or be generally arc-shaped face or
Other forms.One as the utility model is specific and preferred aspect, the positioning surface are generally planar.The plane can
To be straight plane or tapered plane.
A specific aspect according to the present utility model, the positioning surface are substantially vertical with the axis of column interconnecting piece.Root
According to the another specific aspect of the utility model, the positioning surface is the annular surface around the front end periphery of column interconnecting piece.
In a specific embodiment according to the present utility model, sacculus presents after being expanded and is similar to mushroom-shaped
Shape.Similar apple shape is presented in balloon expandable portion.
A preferred aspect according to the present utility model, the column interconnecting piece of the sacculus is semi-compliant, can be by
Semi-compliant material is made；The balloon expandable portion is compliance, can be made of conforming materials.Wherein compliance
(compliance) refer to every variation for increasing an atmospheric pressure sacculus shape or volume and accordingly occurring when sacculus is full, be sacculus
The index of drawing force.The material of semi-compliant sacculus usually has such as nylon, and the material of compliant balloon (21) usually has example
Such as rubber.
The utility model also provides a kind of aortic valve systems comprising bracket, the artificial valve being connected on bracket
And the aortic valve stent transportation system that the utility model is above-mentioned.
Preferably, the bracket is double-layer scaffold, specifically includes balloon expandable stent and from swollen bracket, artificial valve is connected
Described from swollen bracket, when bracket conveying after the completion of, from swollen bracket be located at balloon expandable stent inner circumferential and to periphery tight against
Balloon expandable stent；Balloon expandable stent is to periphery tight against on the aortic valve of human body.Double-layer scaffold design ensure that master
The abundant expansion of arterial valve is fixed with abundant, be ensure that the molding in bracket and area, is reduced perivalvular leakage and centrality reflux
Generation.
It is improved it is further preferred that being formed between the front end and balloon expandable stent from swollen bracket from swollen bracket
The anchoring structure of binding force between balloon expandable stent.The design of anchoring structure can ensure that bracket is well secured and prevents valve
Week leakage.
According to the utility model, the anchoring structure it is specific setting can there are many.For example, anchoring structure may include position
Anchor portion in the front end from swollen bracket, anchor portion and balloon expandable stent shape cooperate, and the combination of the two so can be enhanced
Power.Alternatively, the anchoring structure may include being formed in first auxiliary section from swollen bracket front end outer peripheral surface, being formed in institute
Second auxiliary section of the inner peripheral surface for the balloon expandable stent stated, the first auxiliary section match fixation with the second auxiliary section.Wherein
One auxiliary section, the second auxiliary section fit system be floating-point cooperation, tooth cooperation or be threadedly engaged.Alternatively, anchoring structure can be with
It is the combination of aforementioned two kinds of modes.
One according to the present utility model specific and preferred aspect, the length of the balloon expandable stent are less than from swollen branch
Frame.After the completion of bracket conveying, the balloon expandable stent is located at from the front end periphery of swollen bracket.Further, sacculus
The length of expandable stent is approximately the 1/6-1/3 from swollen bracket.
Due to the application of the above technical scheme, the utility model has the advantage that compared with prior art
The aortic valve stent transportation system of the utility model increases particular design using in push release device front end
Special-shaped sacculus be anchored to it in use, releasing the balloon expandable portion of special-shaped sacculus after valve substantially positions and expanding
Left ventricular outflow tract, withdrawing entire transportation system is anchored to sacculus under aorta petal, and bracket is fixedly positioning at this time, coaxial good
Good, due to firm position and alignment is good, can contribute to reduce or prevent perivalvular leakage.In addition, the aorta of the utility model
The setting of valve bracket transportation system is simple, increases special-shaped foley's tube on the basis of original transportation system.
Detailed description of the invention
Fig. 1 is the partial schematic sectional view according to the aortic valve systems of the utility model；
Fig. 2 is the schematic cross-sectional view in Fig. 1 at A-A；
Fig. 3 is the schematic cross-sectional view in Fig. 1 at B-B；
Fig. 4 shows longitudinal schematic cross-sectional view after the special-shaped balloon expandable of form one；
Fig. 5 shows longitudinal schematic cross-sectional view after the special-shaped balloon expandable of form two；
Fig. 6 a-f shows the process that bracket conveying is carried out using the aortic valve stent transportation system of the utility model,
Wherein, Fig. 6 a is to show stent delivery system and bracket conveying being transported to designated position along seal wire；Fig. 6 b is shown to dew
Balloon expandable portion and after being expanded and being retracted out, the positioning surface in balloon expandable portion and the bottom surface at human aortic valve sinus bottom
The state fitted closely；Fig. 6 c shows that ball expands the schematic diagram after bracket is released；Fig. 6 d shows sacculus by pressure release, from swollen branch
Frame is transported to schematic diagram when designated position；Fig. 6 e show from swollen bracket be released after schematic diagram；Fig. 6 f shows defeated
After sending system to withdraw, state of the bracket at human aortic valve；
Fig. 7 is balloon expandable stent and the " loaded " position schematic diagram from swollen bracket；
Fig. 8 is the expansion process schematic of balloon expandable stent；
Fig. 9 is the expansion Product management model status diagram of balloon expandable stent.
Wherein: 1, artificial valve；2, special-shaped foley's tube；21, sacculus；211, column interconnecting piece；212, balloon expandable portion；
213, positioning surface；5, aorta petal；51, the bottom of aorta petal；3, balloon expandable stent；4, from swollen bracket；52, aorta petal
Film；6, interior sheath；7, epitheca；8, seal wire.
Specific embodiment
The technical solution of the utility model is further elaborated with reference to the accompanying drawings and detailed description.
As shown in Figure 1, the utility model relates to a kind of aortic valve systems comprising bracket is connected on bracket
Artificial valve 1 and aortic valve stent transportation system.
Aortic valve stent transportation system includes the push release device for transfer gantry, and setting is in push release dress
Set the special-shaped foley's tube 2 of front end.
Special-shaped foley's tube 2 includes sacculus 21, and as shown in figs. 4 and 5, sacculus 21 has column interconnecting piece 211 and and column
The balloon expandable portion 212 that shape interconnecting piece 211 is connected to, column interconnecting piece 211 are connect with the front end of push release device, 21 quilt of sacculus
Design are as follows: balloon expandable portion 212 forms positioning surface 213 in the side close to column interconnecting piece 211 after expansion, uses aorta
When valve bracket transportation system, the balloon expandable portion 212 of sacculus 21 is located in left ventricular outflow tract and by positioning surface 213 and people
The bottom 51 of body aorta petal 5 fits closely, and plays the role of positioning and reduction and/or prevents perivalvular leakage.
According to the utility model, positioning surface 213 can be generally planar or be generally arc-shaped face or other forms.This reality
It applies in example, positioning surface 213 is generally planar, and wherein plane can be straight plane or tapered plane.According to the utility model, positioning surface
213 is substantially vertical with the axis of column interconnecting piece 211, and positioning surface 213 is the annular around the front end periphery of column interconnecting piece 211
Face.As shown in Fig. 4, it is presented after sacculus 21 is expanded and is similar to mushroom shaped.As shown in Fig. 5, balloon expandable portion 212 is presented
Similar apple shape.
According to the utility model, the column interconnecting piece 211 of sacculus 21 is semi-compliant, can be by semi-compliant material system
At；Balloon expandable portion 212 is compliance, can be made of conforming materials.Wherein compliance (compliance) refers to sacculus
21 every variations for increasing by 21 shape of atmospheric pressure sacculus or volume and accordingly occurring when full, are the indexs of 21 drawing force of sacculus.
The material of semi-compliant sacculus 21 usually has such as nylon, and the material of compliant balloon 21 usually has such as rubber.
As shown in attached drawing 1 to 3, attached drawing 6, bracket is double-layer scaffold, specifically includes balloon expandable stent 3 and from swollen bracket 4,
Artificial valve 1 is connected to from swollen bracket 4, and after the completion of bracket conveying, the inner circumferential of balloon expandable stent 3 is located at from swollen bracket 4
And to periphery tight against balloon expandable stent 3；Balloon expandable stent 3 is to periphery tight against on the aortic valve 52 of human body.It is double-deck
Support Design ensure that the abundant expansion of aorta petal 5 and sufficiently fix, and ensure that the molding in bracket and area, reduces valve
The generation of week leakage and centrality reflux.
It is further preferred that being improved from being formed between the front end and balloon expandable stent 3 of swollen bracket 4 from swollen bracket 4
The anchoring structure of binding force between balloon expandable stent 3.The design of anchoring structure can ensure that bracket is well secured and prevents
Perivalvular leakage.Anchoring structure it is specific setting can there are many.For example, anchoring structure may include being located at from the front end of swollen bracket 4
Anchor portion, anchor portion and 3 shape of balloon expandable stent cooperate, and the binding force of the two so can be enhanced.Alternatively, anchoring structure can
Second including being formed in the first auxiliary section from swollen 4 front end outer peripheral surface of bracket, the inner peripheral surface for being formed in balloon expandable stent 3 matches
Conjunction portion, the first auxiliary section match fixation with the second auxiliary section.Wherein the first auxiliary section, the second auxiliary section fit system be floating
Point cooperation, tooth cooperation are threadedly engaged.Alternatively, anchoring structure can also be the combination of aforementioned two kinds of modes.
In the present embodiment, the length of balloon expandable stent 3 is less than from swollen bracket 4.After the completion of bracket conveying, balloon expandable
Bracket 3 is located at from the front end periphery of swollen bracket 4.Further, the length of balloon expandable stent 3 is approximately the 1/6- from swollen bracket 4
1/3。
In the utility model, push release device is not the main points of the utility model protection, commonly used in the prior art to push away
Release device is sent to can be used.Rest part of the special-shaped foley's tube 2 in addition to sacculus 21 is also not wanting for the utility model protection
Point, the rest part of foley's tube commonly used in the prior art such as conduit etc. can be used.Also, push the use of release device
The expansion method of the application method and sacculus 21 of method and foley's tube can use known method.
As shown in attached drawing 1 and 7, the structure for the aortic valve systems that the utility model has loaded are as follows: from 4, swollen bracket
In lumen between the interior sheath 6 and epitheca 7 of push release device, special-shaped foley's tube 2 is loaded in the front end of interior sheath 6, sacculus
Expandable stent 3 is set on the column interconnecting piece 211 of special-shaped foley's tube 2, and special-shaped foley's tube 2 and balloon expandable stent 3
It is respectively positioned in epitheca 7.
When the utility model is used, the aortic valve systems loaded are imported into aorta first along seal wire 8
At valve 5, the balloon expandable portion 212 of sacculus 21 is specially set to reach left ventricular outflow tract, balloon expandable stent 3 is located approximately at master
The bottom (as shown in fig. 6) of artery sinus；Then recession epitheca 7 expands ball balloon expandable portion 212 to the pressurization of sacculus 21, so
Whole recession aortic valve systems keep the positioning surface 213 in balloon expandable portion 212 and the bottom 51 of human aortic valve 5 close afterwards
Fitting, the effect and aorta so that aortic valve systems be made to be accurately positioned, and because of the column interconnecting piece 211 of sacculus 21 are coaxial
(as shown in fig. 6b)；Then epitheca 7 of dropping back in the column interconnecting piece 211 of dilating sacculus 21 keeps balloon expandable stent 3 passive
Expansion discharges and is positioned at aorta petal 5(as shown in attached drawing 6c)；Then 21 pressure release of sacculus, is integrally fed forward aortic valve
System, the sacculus 21 after making pressure release reach left ventricle, are delivered to (such as attached drawing in the balloon expandable stent 3 after release from swollen bracket 4
Shown in 6d)；From after the accurate positioning of swollen bracket 4, epitheca 7 is withdrawn, swollen bracket 4 is released from, makes anchor portion and sacculus from swollen bracket 4
Expandable stent 3 cooperates, and the special-shaped foley's tube 2(after then withdrawing push release device and pressure release is as shown in attached drawing 6e).
To sum up, firstly, the utility model, which is used, increases the special-shaped sacculus 21 of particular design in push release device front end, make
Used time releases the balloon expandable portion 212 of special-shaped sacculus 21 and is expanded after valve substantially positions, it is made to be anchored to left ventricle stream
It engages in this profession, withdrawing entire transportation system is anchored to sacculus 21 under aorta petal 5, and bracket is fixedly positioning at this time, and it is coaxial good, due to
Firm position and alignment is good can contribute to reduce or prevent perivalvular leakage.Secondly, the utility model uses the band of double layer design
There is the bracket of artificial valve 1, ensure that the abundant expansion of aorta petal 5 and sufficiently fix, ensure that the molding in bracket and face
Product, while ensure that the compliance and support force of bracket, reduce the generation of perivalvular leakage and centrality reflux, and do not expand sheath
Pipe diameter avoids vascular complication risk.Furthermore the aortic valve stent transportation system setting of the utility model is simple,
Increase special-shaped foley's tube 2 on the basis of original transportation system.Finally, to be not only suitable for aorta petal 5 narrow for the utility model
Patient, and it is suitable for 5 incompetence patient of aorta petal, applicability is stronger.
The utility model is described in detail above, its object is to allow the personage for being familiar with this field technology can be much of that
It solves the content of the utility model and is implemented, do not limit the protection scope of the present invention, and the utility model
The above embodiments are not limited to, equivalent change or modification made by all Spirit Essences according to the present utility model should all cover
Within the protection scope of the utility model.
Claims (11)
1. a kind of aortic valve stent transportation system, including the push release device for conveying aortic valve stent,
Be characterized in that: the aortic valve stent transportation system further includes the special-shaped ball that the push release device front end is arranged in
Ductus bursae (2), it is described abnormity foley's tube (2) include sacculus (21), the sacculus (21) have column interconnecting piece (211) and with
The balloon expandable portion (212) of column interconnecting piece (211) connection, the column interconnecting piece (211) and the push discharge
The front end of device connects, and the sacculus (21) is designed to: the balloon expandable portion (212) is close to described after expansion
The side of column interconnecting piece (211) forms positioning surface (213), when using aortic valve stent transportation system, the sacculus
(21) balloon expandable portion (212) is located in left ventricular outflow tract and by the positioning surface (213) and human aortic valve
(5) bottom (51) fits closely, and plays the role of positioning and reduction and/or prevents perivalvular leakage.
2. aortic valve stent transportation system according to claim 1, it is characterised in that: the positioning surface (213) is
Plane.
3. aortic valve stent transportation system according to claim 1, it is characterised in that: the positioning surface (213) with
The axis of the column interconnecting piece (211) is vertical.
4. aortic valve stent transportation system according to claim 1, it is characterised in that: the positioning surface (213) is
Annular surface around the front end periphery of the column interconnecting piece (211).
5. aortic valve stent transportation system according to claim 1, it is characterised in that: the column interconnecting piece
(211) it is made of semi-compliant material, the balloon expandable portion (212) is made of conforming materials.
6. a kind of aortic valve systems, including bracket, the artificial valve (1) of connection on the bracket, it is characterised in that: institute
Stating aortic valve systems further includes the aortic valve stent conveying as described in any one of claims 1 to 5 claim
System.
7. aortic valve systems according to claim 6, it is characterised in that: the bracket is double-layer scaffold, specific to wrap
Include balloon expandable stent (3) and from swollen bracket (4), the artificial valve (1) is connected to described from swollen bracket (4), works as institute
It is described to be located at the inner circumferential of the balloon expandable stent (3) and to periphery tight against institute from swollen bracket (4) after the completion of stating bracket conveying
The balloon expandable stent (3) stated；The balloon expandable stent (3) is to periphery tight against on the aortic valve of human body (52).
8. aortic valve systems according to claim 7, it is characterised in that: the front end from swollen bracket (4) with
The anchor for being improved the binding force between swollen bracket (4) and balloon expandable stent (3) is formed between the balloon expandable stent (3)
Determine structure.
9. aortic valve systems according to claim 8, it is characterised in that: the anchoring structure includes being located at from swollen branch
The anchor portion of the front end of frame (4), the anchor portion and balloon expandable stent (3) shape cooperate；And/or the anchoring
Structure includes being formed in first auxiliary section from swollen bracket (4) front end outer peripheral surface, being formed in the balloon expandable branch
Second auxiliary section of the inner peripheral surface of frame (3), first auxiliary section match fixation with the second auxiliary section.
10. aortic valve systems according to claim 9, it is characterised in that: first auxiliary section, the second auxiliary section
Fit system be floating-point cooperation, tooth cooperation or be threadedly engaged.
11. aortic valve systems according to claim 7, it is characterised in that: the length of the balloon expandable stent (3)
Degree is, from the 1/6-1/3 of swollen bracket (4), after the completion of bracket conveying, the balloon expandable stent (3) is located at from swollen bracket
(4) front end periphery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721155153.9U CN208591176U (en) | 2017-09-11 | 2017-09-11 | A kind of aortic valve stent transportation system and aortic valve systems |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721155153.9U CN208591176U (en) | 2017-09-11 | 2017-09-11 | A kind of aortic valve stent transportation system and aortic valve systems |
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| Publication Number | Publication Date |
|---|---|
| CN208591176U true CN208591176U (en) | 2019-03-12 |
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|---|---|---|---|
| CN201721155153.9U Expired - Fee Related CN208591176U (en) | 2017-09-11 | 2017-09-11 | A kind of aortic valve stent transportation system and aortic valve systems |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107468379A (en) * | 2017-09-11 | 2017-12-15 | 姜正明 | A kind of aortic valve stent induction system and aortic valve systems |
-
2017
- 2017-09-11 CN CN201721155153.9U patent/CN208591176U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107468379A (en) * | 2017-09-11 | 2017-12-15 | 姜正明 | A kind of aortic valve stent induction system and aortic valve systems |
| CN107468379B (en) * | 2017-09-11 | 2023-09-08 | 姜正明 | Aortic valve stent delivery system and aortic valve system |
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