CN104398330B - Stent delivery system - Google Patents
Stent delivery system Download PDFInfo
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- CN104398330B CN104398330B CN201410797899.4A CN201410797899A CN104398330B CN 104398330 B CN104398330 B CN 104398330B CN 201410797899 A CN201410797899 A CN 201410797899A CN 104398330 B CN104398330 B CN 104398330B
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- outer tube
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- end outer
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Abstract
The embodiment of the invention discloses a kind of stent delivery system, including：Handle, attachment means, distal end outer tube, safety lock and axis, the handle, attachment means and distal end outer tube are sequentially connected；Wherein, the axis is arranged in the tube chamber of the distal end outer tube and the attachment means and through in the handle, and the axis is used for fixed support overlay film frame；The handle includes fixed handle and rotary handle, and the fixed handle is socketed in the front end with the rotary handle, and the rotary handle rotates relative to the fixed handle, and drives the attachment means and the distal end outer tube to move；The safety lock connects the fixed handle.The stent delivery system provided by the present embodiment, the overlay film frame of conveying can be enable accurately to be released to affected area, and be independently moved rearwards by the blood vessel by distal end outer tube, make overlay film frame quick release, so as to avoid overlay film frame long-time blocking blood flow from causing the risk of blood vessel or aneurysm rupture.
Description
Technical field
The present invention relates to technical field of medical instruments, more particularly to a kind of stent delivery system.
Background technology
Along with China's growth in the living standard and aging population trend, arotic disease incidence trend goes from bad to worse；
Meanwhile, with the increasingly fast development of industry prosperity and high-speed transit, the incidence of disease of traumatic aortic aneurysm is also increasing.It is right
In the development of intracavitary therapy technology, the most preferably mode of arotic disease treatment mainly enters an actor's rendering of an operatic tune by minimally invasive intervention Endovascular
Interior treatment.
In the prior art, it is to place overlay film frame in affected area for the topmost mode of Endovascular Treatment of Aortic Diseases,
Affected area blood vessel is completely cut off by overlay film frame, channel of blood flow is rebuild.It is responsible for the blood supply of whole body most organs due to sustainer, has
The characteristics of VPV is fast, pressure is high, if overlay film frame blocking blood flow overlong time is likely to result in blood vessel or aneurysm is broken
The risk split, in some instances it may even be possible to cerebral artery pressure occurs too high and cause hemorrhagic apoplexy etc. to have a strong impact on the situation of life；If
It is operated using medicine step-down, easily causes organ ischemia and unhealthful recovery or cause sequelae.Simultaneously as
Supraaortic branch vessel is more, under conditions of disease treatment is met, it is desirable to can as early as possible reduce the screening to branch vessel
Block gear, it is to avoid the situation of important organ ischemic.At present, when endovascular graft is carried out, the system for conveying overlay film frame
Overlay film frame directly would generally be conveyed into blood vessel, and discharge overlay film frame when overlay film frame reaches specified location, passed through
Overlay film frame completely cuts off affected area, rebuilds channel of blood flow.
The induction system of current aorta tectorial membrane stent product has two major classes：Post-tensioning outer pipe type induction system and rotation hand
Shank type induction system, wherein, the post-tensioning outer pipe type induction system has good rate of release, but off-position accuracy is poor,
Easily cause support overlay film block important branch blood vessel or trigger in leakage, stent migration situations such as；The rotary handle type induction system
Blood vessel or artery are likely to result in overlay film frame blocking blood flow overlong time during good release accuracy, but release
The risk of knurl rupture, in some instances it may even be possible to cerebral artery pressure occurs too high and cause hemorrhagic apoplexy etc. to have a strong impact on the situation of life；
If be operated using medicine step-down, easily cause organ ischemia and unhealthful recovery or cause sequelae.
The content of the invention
A kind of stent delivery system is provided in the embodiment of the present invention, will to solve stent delivery system of the prior art
Overlay film frame is delivered in affected area placement process, and the induction system off-position accuracy of quick release is poor, easily causes support
Overlay film blocks important branch blood vessel or is leaked in triggering, stent migration, and stent delivery system long period blocking blood flow may be made
Into blood vessel or the risk of aneurysm rupture, in some instances it may even be possible to cerebral artery pressure occurs too high and cause hemorrhagic apoplexy etc. to have a strong impact on
The problems such as situation of life.
In order to solve the above-mentioned technical problem, the embodiment of the invention discloses following technical scheme：
A kind of stent delivery system is the embodiment of the invention provides, including：Handle (16), attachment means (23), outside distal end
Pipe (1), safety lock (27) and axis (9), the handle (16), the attachment means (23) and the distal end outer tube (1) are successively
Connection；Wherein,
The axis (9) is arranged in the distal end outer tube (1) and the attachment means (23) and through the handle
(16) in, and the axis (9) is for fixed support overlay film frame；
The handle (16) includes fixed handle (17) and rotary handle (18), and the fixed handle (17) is socketed in and institute
The front end of rotary handle (18) is stated, and the rotary handle (18) rotates relative to the fixed handle (17), and drive described
Attachment means (23) and the distal end outer tube (1) are mobile；
The safety lock (27) connects the fixed handle (17).
Optionally, guide groove (19), guide groove lock (21) are provided with the fixed handle (17) and the rotary handle (18)
With sliding part (20), wherein,
The sliding part (20) is set in the guide groove (19), and the sliding part (20) outside screw and the rotation
The inside thread occlusion of handle (18) is changed hands, the sliding part (20) moves axially along the guide groove (19)；
The guide groove (19) is fixed in the handle (16) by guide groove lock (21), and guide groove lock (21) is used for
The fixation guide groove (19).
Optionally, the sliding part (20) is flexibly connected or is affiliated to and is connected with one end of the attachment means (23), and institute
State sliding part (20) to be moved axially along the guide groove (19), and drive the attachment means (23) and the distal end outer tube (1) to move
It is dynamic.
Optionally, the safety lock (27) includes strain relief sleeve pipe (28) and bolt (29), wherein,
The strain relief sleeve pipe (28) connects the bolt (29)；
The strain relief sleeve pipe (28) is for being connected to the front end of the fixed handle (17), and the strain relief set
(28) are for locking and prevent the attachment means (23) and the distal end outer tube (1) relative to the fixed handle (17) axle for pipe
To movement.
Optionally, the distal end outer tube (1) includes indicating ring (2), pipe shaft (3), hemostasis valve seat (5), side pipe (6), valve
(7) and connector (8), wherein,
It is provided with the pipe shaft (3) in hollow lumen, the tube chamber for placing the axis (9)；
The indicating ring (2) is arranged on the front end of the pipe shaft (3), and the hemostasis valve seat (5) is arranged on the pipe shaft (3)
End, and it is described hemostasis valve seat (5) be built-in with haemostatic valve (4)；
Hemostasis valve seat (5) connects the connector (8), and the connector (8) and the attachment means (23) phase
Connection；
The inner chamber of hemostasis valve seat (5) connects the valve (7) by the side pipe (6).
Optionally, the two ends of the attachment means (23) respectively with the connector (8) and the hand of the distal end outer tube (1)
The sliding part (20) set in handle (16) is connected；Wherein,
It is affiliated between the sliding part (20) set in the attachment means (23) and the handle (16) and is connected or flexible company
Connect.
Optionally, the axis (9) includes conical head (10), thin wall shaft (12), support shaft (13) and reinforced shaft (14), institute
State conical head (10) and connect the thin wall shaft (12)；Wherein,
The guidewire lumen (15) is through the thin wall shaft (12), the support shaft (13) and the reinforced shaft (14), institute
State and seal wire is placed in guidewire lumen (15), and the seal wire runs through the axis (9)；
The thin wall shaft (12) and the support shaft (13) are arranged in the tube chamber of the distal end outer tube (1), the taper
Head (10) stretches out the distal end outer tube (1), and the end of the conical head (10) is correspondingly arranged at showing for distal end outer tube (1)
The position of mark ring (2).
Optionally, there is cylinder between the thin wall shaft (12) of the axis (9) and the inwall of the tube chamber of the distal end outer tube (1)
Shape space；Wherein,
The cylindrical space is used to place the overlay film frame, and the axis (9) the support fixation overlay film frame.
Optionally, the conical head (10) is flexible conical head.
Optionally, the axis (9) also includes rear release device (11), wherein,
The rear release device (11) is arranged between the conical head (10) and the thin wall shaft (12), and it is described after release
Put device (11) and the handle (16) end is provided with control device.
From above technical scheme, stent delivery system provided in an embodiment of the present invention, including handle, attachment means,
Distal end outer tube and axis, the handle, attachment means and distal end outer tube are sequentially connected, and the axis is arranged on distal end outer tube, connection dress
Put with handle, the axis be used for fixed support overlay film frame；The handle includes fixed handle and rotary handle, and fixed handle exists
Rotary handle front end sleeve is provided with guide groove and sliding part outside rotary handle in the fixed handle and rotary handle, the sliding part
Connect the attachment means, sliding part is used to be moved axially on guide groove, attachment means and far are driven sliding part is moved backward when
End outer tube is moved backward；The stent delivery system of the embodiment of the present invention, the mistake that sliding part retreats on guide groove is made by the handle
Cheng Zhong, makes distal end outer tube retreat in intravascular, so that quick release goes out overlay film frame.
Further, during stent delivery system conveying overlay film frame, doctor can rule of thumb by outside distal end
Indicating ring and the indicating of overlay film frame front end (mark) position on pipe, carry out Primary Location, then in affected area to overlay film frame
Rotary handle rotarily drives distal end outer tube movement makes the speed that overlay film frame discharges slower, the length that can be discharged with precise control support
Degree, when 1 to 2 section overlay film frame is discharged, suspends rotatable handle, and now overlay film frame front end indicates showing for overlay film original position
Mark (mark) launches with overlay film frame, can be apparent indicate overlay film frame will placement position, and overlay film frame is also not
It is adherent not block aortic flow, adjustment of the without prejudice to overlay film frame position；By observe indicating position whether with expection
Setting support places overlay film original position unanimously, if indicating is forward, slowly moves whole induction system backward to target location,
Push away whole induction system to target location slow forward if indicating rearward such that it is able to realize the precisely fixed of overlay film frame
Position, after support is accurately positioned, zooms out end outer tube backward, makes overlay film frame quick release, it is to avoid overlay film frame for a long time lead by blocking
Artery blood flow, influences surgical effect or human body is caused serious harm.So as to realize the accurate release of overlay film frame, overlay film is improved
Support rate of release, reduces Xining of the overlay film frame to aortic flow as far as possible again, finally promotes successful surgery and improves
Postoperative effect, such as makes patient's quick recovery, reduces stent migration, again operation intervention.
Further, in the stent delivery system that the present embodiment is provided, by setting safety lock at the handle, safety is worked as
Lock is in the lock state, prevent attachment means and distal end outer tube relative to handle from moving axially (cannot advance or after
Move back), so as to avoid overlay film frame in transportation, stent delivery system insertion blood vessel or operation set-up procedure in, outside distal end
Pipe movement discharges overlay film frame, situations such as cause product failure；Also, the attachment means are affiliated to the sliding part of handle and are connected
Or flexible connection, the process for making distal end outer tube move backward is not relying on movement or the position of sliding part, so as to covering
After membrane support carries out precise positioning, overlay film frame quick release can be made by moving distal end outer tube backward, reduce overlay film frame and release
To the blocking of blood in blood vessel during putting, so as to improve success rate of operation, reduce the incidence of adverse events.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, for those of ordinary skill in the art
Speech, on the premise of not paying creative work, can also obtain other accompanying drawings according to these accompanying drawings.
Fig. 1 is a kind of structural representation of stent delivery system provided in an embodiment of the present invention；
Fig. 2 is a kind of partial structural diagram of the handle of stent delivery system provided in an embodiment of the present invention；
Fig. 3 is a kind of partial structural diagram of the safety lock of stent delivery system provided in an embodiment of the present invention；
Fig. 4 is a kind of partial structural diagram of the distal end outer tube of stent delivery system provided in an embodiment of the present invention；
Fig. 5 is a kind of partial structural diagram of the attachment means of stent delivery system provided in an embodiment of the present invention；
Fig. 6 is a kind of structural representation of the axis of stent delivery system provided in an embodiment of the present invention；
Fig. 7 is the partial structural diagram of the axis of another stent delivery system provided in an embodiment of the present invention；
Fig. 8 is a kind of partial structural diagram of the rear release device of stent delivery system provided in an embodiment of the present invention.
Symbol description：
1- distal ends outer tube, 2- indicating rings, 3- pipe shafts, 4- haemostatic valves, 5- hemostasis valve seats, 6- side pipes, 7- valves, 8- connections
Part；9- axis, 10- conical heads, release device after 11-, 12- thin wall shafts, 13- support shafts, 14- reinforced shafts, 15- guidewire lumens；16-
Handle, 17- fixed handles, 18- rotary handles, 19- guide grooves, 20- sliding parts, 21- guide grooves lock, 22- anchorage shoes；23-
Attachment means, 24- joints, 25- connecting tubes, 26- boss；27- safety locks, 28- strain relief sleeve pipes, 29- bolts；30- is received
Device, 31- guiders, 32- retainer rings, 33- limiters, 34- steady pins, 35- release bracing wires, 36- Guy wire guide-tubes.
Specific embodiment
In order that those skilled in the art more fully understand the technical scheme in the present invention, below in conjunction with of the invention real
The accompanying drawing in example is applied, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described implementation
Example is only a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, this area is common
The every other embodiment that technical staff is obtained under the premise of creative work is not made, should all belong to protection of the present invention
Scope.
It is a kind of structural representation of stent delivery system provided in an embodiment of the present invention referring to Fig. 1.Meanwhile, referring to Fig. 2
The structural representation of shown provided in an embodiment of the present invention another stent delivery system, the specially hand of stent delivery system
The partial structural diagram of handle 16.
As shown in figure 1, the stent delivery system that the present embodiment is provided includes：Handle 16, attachment means 23, distal end outer tube 1,
Safety lock 27 and axis 9, the handle 16, attachment means 23 and distal end outer tube 1 are sequentially connected, and the axis 9 is arranged on the distal end
In outer tube 1, attachment means 23, and through handle 16, the axis 9 is used for fixed support overlay film frame；Wherein, the handle 16 is wrapped
Fixed handle 17 and rotary handle 18 are included, the fixed handle 17 is set in the front end outer side of rotary handle 18, and the rotary handle 18
Can be rotated relative to fixed handle 17 by assigned direction, so as to drive the attachment means 23 and distal end outer tube 1 to move；The safety
Lock 27 is connected with the fixed handle 17, so as to lock the attachment means 23 and distal end outer tube 1, and prevents the attachment means 23 and far
End outer tube 1 is moved axially relative to fixed handle 17.
The stent delivery system provided using the present embodiment, because the handle 16 is connected with attachment means 23, and the company
Connection device 23 is connected with distal end outer tube 1, and the axis 9 is set in the distal end outer tube 1, is placed between the axis 9 and distal end outer tube 1 and covered
Membrane support simultaneously fixes support overlay film frame by the axis 9.By the rotary handle 18 for rotating the handle 16 so that the rotation hand
Handle 18 is affiliated to attachment means 23 with the sliding part 20 in fixed handle 17 and is connected or is flexibly connected, and sliding part 20 is in guide groove 19
On axially move, so as to drive the attachment means 23 being connected with the handle 16 to move axially, and then by distal end outer tube 1 in blood
Retreated in pipe, so as to realize the release of overlay film frame.
Further, in the stent delivery system that the present embodiment is provided, by setting safety lock at the handle, safety is worked as
Lock is in the lock state, prevent attachment means and distal end outer tube relative to handle from moving axially (cannot advance or after
Move back), so as to avoid overlay film frame in transportation, stent delivery system insertion blood vessel or operation set-up procedure in, outside distal end
Pipe movement discharges overlay film frame, situations such as cause product failure.
Wherein, during stent delivery system conveying overlay film frame, doctor can rule of thumb by the outer tube of distal end
Indicating ring and the indicating of overlay film frame front end (mark) position, Primary Location is carried out to overlay film frame in affected area, then rotate
Rotatable handle drives distal end outer tube to move makes the speed of overlay film frame release slower, the length that can be discharged with precise control support,
When 1 to 2 section overlay film frame is discharged, suspend rotatable handle, now overlay film frame front end indicates the indicating of overlay film original position
(mark) launches with overlay film frame, can be apparent indicate the position that overlay film frame will place, and overlay film frame do not paste also
Wall does not block aortic flow, adjustment of the without prejudice to overlay film frame position；By observing whether indicating position sets with expection
Fixed rack places overlay film original position unanimously, if indicating is forward, slowly moves whole induction system to target location backward, such as
Fruit indicating then pushes away whole induction system to target location slow forward rearward such that it is able to realize the precise positioning of overlay film frame,
After support is accurately positioned, end outer tube is zoomed out backward, make overlay film frame quick release, it is to avoid overlay film frame blocks sustainer for a long time
Blood flow, influences surgical effect or human body is caused serious harm.So as to realize the accurate release of overlay film frame, overlay film frame is improved
Rate of release, reduces Xining of the overlay film frame to aortic flow as far as possible again, finally promotes successful surgery and improves postoperative
Effect, such as makes patient's quick recovery, reduces stent migration, again operation intervention.
Wherein, as shown in Fig. 2 being provided with guide groove 19 and sliding part 20, the cunning in the fixed handle 17 and rotary handle 18
Moving part 20 connects the attachment means 23, and sliding part 20 is set on guide groove 19, can be axially moved in guide groove 19, so that band
Dynamic attachment means 23, distal end outer tube 1 are moved rearwards by；In order to ensure that the guide groove 19 set in the handle 16 is more stablized, the handle
It is provided with guide groove lock 21 in 16, guide groove lock 21 is arranged on the two ends of the handle 16, for the clamping guide groove 19, specifically, leading
The projection that the groove set on the front end of slot lock 21 is set with the leading inside of fixed handle 17 is inlayed, so as to ensure the guide groove 19 not
Can together be rotated with rotary handle 18；Specifically, it is shown in Figure 2, it is provided with two guide grooves 19, the guide groove in the handle 16
19 are applied in the fixed handle 17 and rotary handle 18, and guide groove lock 21 is fixed on two two ends of guide groove 19；The sliding part
20 are set on two guide grooves 19, and the sliding part 20 can be moved along guide groove 19, so as to drive connected attachment means
23rd, distal end outer tube 1 is moved, and makes overlay film frame quick release.
It is shown in Figure 3, it is the structural representation of another stent delivery system provided in an embodiment of the present invention, specially should
The partial structural diagram of the safety lock 27 of stent delivery system.
Explanation is needed, in the stent delivery system that the present embodiment is provided, rotary handle 18 connects the sliding part 20, example
Such as, by the threaded connection for cooperating between the inner side of the rotary handle 18 and sliding part 20, by the rotary handle 18
Threaded engagement on the screw thread of side and the sliding part 20, in the groove and the front end of fixed handle 17 set on the front end of guide groove lock 21
The projection that side is set is inlayed, and guide groove lock 21 is blocked by fixed handle 17, prevents guide groove 19 from being rotated with rotary handle 18, should
During rotary handle 18 is rotated relative to fixed handle 17 so that sliding part 20 does axial shifting along guide groove 19 in handle 16
It is dynamic.But, other connected modes or working method between the rotary handle 18 and sliding part 20 are not limited to the present embodiment and carry
The embodiment for going out, is not further elaborated herein.
As illustrated, in the stent delivery system that the present embodiment is provided, when the overlay film branch that the stent delivery system is transported
Before frame reaches affected area, in order to ensure the overlay film frame can accurately discharge, off-position zero deflection, and ensure overlay film frame not
Discharge in advance, the stent delivery system also include safety lock 27, specifically, the safety lock 27 be arranged on the front end of handle 16 and
The fixed handle 17 is connected, by the locking connection device 23 of safety lock 27.Wherein, the safety lock 27 includes strain relief sleeve pipe
28 and bolt 29, the strain relief sleeve pipe 28 of the safety lock 27 connects the bolt 29, and the strain relief sleeve pipe 28 is connected to fixation
In handle 17, in implementation process, when safety lock 27 is in the lock state, i.e., the bolt 29 is in tight condition, the strain relief
The elongation of sleeve pipe 28 is connected in fixed handle 17, prevents attachment means 23 and distal end outer tube 1 relative to handle 16 from carrying out axial direction
Mobile (cannot advance or retreat), so as to avoid overlay film frame in transportation, stent delivery system insert blood vessel or hand
In art set-up procedure, the movement of distal end outer tube 1 causes overlay film frame to discharge in advance, situations such as so as to cause product failure.
But, the structure of the safety lock 27 is not limited to strain adaptation sleeve pipe 28 and the bolt 29 of the present embodiment offer, also
Can be by setting V-type spring hitch or fixed sleeving, so that when the safety lock 27 is in the lock state, making distal end outer tube 1
It is relatively fixed with the position of handle 16, it is to avoid overlay film frame inserts the process of blood vessel in transport, operation preparation or stent delivery system
Middle appearance discharges in advance.
It is the structural representation of another stent delivery system provided in an embodiment of the present invention referring to Fig. 4, specially support is defeated
Send the structural representation of the distal end outer tube 1 of system.
As illustrated, the distal end outer tube 1 of the stent delivery system of embodiment offer includes indicating ring 2, pipe shaft 3, hemostasis
Valve seat 5, valve 7 and connector 8, the pipe shaft 3 are to be provided with hollow lumen in hollow tube, pipe shaft 3, in placement in the tube chamber
Axle 9；The material of indicating ring 2 is the materials such as platinum, gold, platinum alloy, tungsten alloy or billon, before the indicating ring 2 is arranged on pipe shaft 3
End, for developing under X-ray, be easy to medical personnel in the position shifting of the outside stent delivery system shown by developing apparatus
The distal end outer tube 1 is moved, for stent delivery system to the Primary Location of overlay film frame；Hemostasis valve seat 5 is arranged on the end of pipe shaft 3
End, and the hemostasis valve seat 5 connects the connector 8, the connector 8 is connected with attachment means 23.Wherein, in the hemostasis valve seat 5
Haemostatic valve 4 is equipped with, is flowed directly out from distal end outer tube 1 in vitro by the anti-Hemostatic Oral Liquid of haemostatic valve 4, the hemostasis valve seat 5 is built-in
Haemostatic valve 4 is communicated with valve 7 by side pipe 6, in implementation process, by the valve 7 be easy to overlay film frame exhaust, rinse with
And medicine is conveyed in surgical procedure by valve 7.
It should be noted that the axis 9 of overlay film frame, overlay film are fixed in the pipe shaft 3 of the distal end outer tube 1 for placing support
Support is fixed between the axis 9 and the pipe shaft 3 of distal end outer tube 1, so as to keep overlay film frame to be in pressure by the distal end outer tube 1
Contracting state, enables overlay film frame to be positioned over affected area by minimally invasive intervention；And, the internal layer of the pipe shaft 3 is high-density polyethylene
Alkene, polytetrafluoroethylene (PTFE) or polyformaldehyde material, pipe shaft 3 strengthen its knot using stainless steel cloth, spring, nylon wire or glass fiber net etc.
Structure, and outer surface treatment is carried out to pipe shaft 3 by hydrophilic coating, so as to protect blood vessel in overlay film frame by the distal end outer tube 1
From the damage of overlay film frame during intravasation.
It is the structural representation of another stent delivery system provided in an embodiment of the present invention referring to Fig. 5, specially support is defeated
Send the partial structural diagram of the attachment means 23 of system.
As illustrated, the two ends of the attachment means 23 connect the distal end outer tube 1 and handle 16 respectively, wherein, connection dress
Putting 23 includes joint 24, connecting tube 25 and boss 26, and the two ends of connecting tube 25 are respectively provided with joint 24 and boss 26；Wherein, should
Connecting tube 25 is connected by the connector 8 that joint 24 is set with distal end outer tube 1, and the connecting tube 25 is by boss 26 and handle 16
One end of sliding part 20 be connected, so as to realize the attachment means 23 respectively with the connection of distal end outer tube 1 and handle 16, and then
Attachment means 23 and distal end outer tube 1 is driven to move relative to the rotation of fixed handle 17 by rotary handle 18.
In the attachment means 23 that the present embodiment is provided, the boss 26 of the attachment means 23 is affiliated in one end of sliding part 20
Or be flexibly connected with sliding part 20, when sliding part 20 is moved rearwards by guide groove 19, sliding part 20 drives whole attachment means
23 are moved rearwards by, and after making the mobile drive distal end outer tube 1 of sliding part 20 in the rotary course of handle 16 by the attachment means 23
Move.Connection or flexible connection are affiliated to so that the attachment means 23 do not influence distal end outer tube straight between the boss 26 and sliding part 20
Moved after being access to, after realizing that overlay film frame is accurately positioned, individually zoom out end outer tube 1 and be individually moved rearwards by, make overlay film frame
Can quick release at any time.
Attachment means 23 in stent delivery system of the invention be not limited to the present embodiment proposition by connecting tube 25
Two ends set joint 24 and boss 26, can also be connected by setting other connected modes such as shrinkable sleeves, pitman, rope
Deng being connected with the sliding part 20 in distal end outer tube 1 and handle 16 respectively, in realizing the rotation process of rotary handle 18 of the handle 16,
Retreated with distal end outer tube 1, reach the purpose of overlay film frame precise positioning, while the company of being affiliated between attachment means 23 and sliding part 20
Connect or be flexibly connected movement or the position that sliding part 20 is not relied on when direct pull distal end outer tube 1 is moved backward.
It is the structural representation of another stent delivery system provided in an embodiment of the present invention, specially support referring to Fig. 6
The structural representation of the axis 9 of induction system.
As illustrated, the axis 9 includes conical head 10, thin wall shaft 12, support shaft 13 and reinforced shaft 14, the conical head 10 connects
Connect the thin wall shaft 12；Wherein, the guidewire lumen 15 is set through thin wall shaft 12, support shaft 13 and reinforced shaft 14 in guidewire lumen 15
Seal wire and seal wire run through axis 9, so as to make stent delivery system enter along seal wire under the guiding of seal wire by the guidewire lumen 15
Overlay film frame is simultaneously pushed to target location (i.e. affected area) by blood vessel.
Wherein, in implementation process, the axis 9 be arranged on distal end outer tube 1, attachment means 23 tube chamber in and through
Handle 16, and overlay film frame is fixed in the support of thin wall shaft 12 of the axis 9, in implementation process, the thin wall shaft 12 of the axis 9, branch
Support axle 13 is arranged in the tube chamber of distal end outer tube 1, and the conical head 10 stretches out the distal end outer tube 1 and the end of the conical head 10
The position of the indicating ring 2 of distal end outer tube 1 is correspondingly arranged at, the movement of the conical head 10 is determined by the developing result of indicating ring 2
Position；Because the diameter of the thin wall shaft 12 is less than the diameter of the support shaft 13 and reinforced shaft 14, then the thin wall shaft 12 is arranged on far
After holding in the tube chamber of outer tube 1, there is cylindrical space between the thin wall shaft 12 and the tube wall of distal end outer tube 1, so that after compression
Overlay film frame be set on thin wall shaft 12 and be arranged in cylindrical space.
It should be noted that in the stent delivery system that the present embodiment is provided, the conical head 10 of the axis 9 is by sulfur-bearing
The conical head 10 that the elastoplast of sour barium or bismuth oxide is made, so as to be used as the support by flexible conical head 10
The flexible conical head end of induction system intravasation, is easy to conveying tracking seal wire through the vessel anatomy of complications and in X-ray
There is position to guide effect for lower development；And the conical head 10 cooperates with the front end of distal end outer tube 1, the conical head 10 is in the branch
Guiding transitional function is played in frame induction system, is avoided as far as possible defeated in stent delivery system puncture, Ink vessel transfusing conveying and support
Send system to withdraw from and cause damage in vascular process to blood vessel；Single lumen catheter or double lumen tube that the support shaft 13 is made for flexible material,
And support shaft 13 is used to strengthen the guidewire lumen 15 of thin wall shaft 12 and improves the fracture resistance of stent delivery system；The reinforced shaft 14 is used
In the support strength for strengthening the support shaft 13.And, for may be configured as NiTi pipe, polyethers ether in the guidewire lumen 15 for setting seal wire
Ketone pipe, spring reinforced pipe, polyphenylene oxide pipe or poly terephthalic acid class pipe, so that the guidewire lumen 15 runs through whole axis 9, are easy to
The stent delivery system guides along seal wire and enough supports is obtained into lesions position and when overlay film frame discharges.
And, in the stent delivery system that the present embodiment is provided, for conveying medicine and the seal wire used by being performed the operation
The guidewire lumen 15 set in the reinforced shaft 14, support shaft 13 and thin wall shaft 12 is sequentially passed through, and by the conical head of the axis 9
Stretched out at 10, so as to carry out drug delivery and resection etc. to affected area.Wherein, the conical head 10 in the axis 9 is provided and is somebody's turn to do
The overlay film frame intravasation that stent delivery system is carried is seamlessly transitted, during reducing stent delivery system to affected area
Damage to blood vessel, so as to guide overlay film frame to be released to lesions position.
It is the partial structural diagram of the axis 9 of stent delivery system provided in an embodiment of the present invention referring to Fig. 7, while
It is the structural representation of the rear release device 11 of stent delivery system provided in an embodiment of the present invention referring to Fig. 8.
As illustrated, when being discharged after the axis 9 supports the overlay film frame of fixation to need, being released after being provided with the axis 9
Device 11 is put, the rear release device 11 is arranged between the conical head 10 and thin wall shaft 12, and the rear release device 11 is in handle
16 end sets control device, controls to pull the rear release device 11 to act on by the control device, so that overlay film frame
After discharge, release function after being provided for overlay film frame.
Wherein, in the stent delivery system that the present embodiment is provided, the rear release device 11 includes receiver 30, guider
31st, retainer ring 32, limiter 33, steady pin 34, release bracing wire 35, Guy wire guide-tube 36 and anchorage shoe 22, the conical head
10 connection receivers 30, are provided with the hole passed through for steady pin 34, guider 31, limiter on the receiver 30 and guider 31
33 are arranged on thin wall shaft 12, and retainer ring 32 is arranged between guider 31, limiter 33, and steady pin 34 is fixed on retainer ring 32
Go up and insert in the hole set on receiver 30 and guider 31, be respectively provided with the support shaft 13 and reinforced shaft 14 of the axis 9
There is interconnected cavity, Guy wire guide-tube 36 is arranged in the cavity；The one end of release bracing wire 35 is connected ring 32, the other end
Through the axis 9 Guy wire guide-tube 36 and be connected with the outside anchorage shoe 22 for setting, meanwhile, dress is fixed in the bracing wire
22 are put to be connected with handle 16.
When the overlay film frame discharged after needs is loaded, in the steady pin 34 insertion receiver 30, by the top of overlay film frame
End is fixed between receiver 30 and guider 31, after overlay film frame discharges first, is connected with anchorage shoe 22 by post-tensioning
The release bracing wire 35 for connecing, by discharging the pulling of bracing wire 35, makes the front end of steady pin 34 retreat in guider 31, discharges overlay film branch
The top of frame, so as to realize the rear release of overlay film frame.
It should be noted that whether the rear release device 11 can be arranged on the axis according to the structures shape of the overlay film frame
In 9, if discharged after the overlay film frame is not needed, the rear release device 11 need not be set in the axis 9, otherwise, pass through
The rear release function that the rear release device 11 provides overlay film frame is set；Certainly, the structure of the rear release device 11 is not limited to
The present embodiment.
In the stent delivery system that the present embodiment is provided, the implementation process of the stent delivery system is：
First, according to example is performed as described above, axis 9 is arranged in the distal end outer tube 1, and the thin wall shaft 12 of the axis 9 with
Hollow space between the inwall of the hollow lumen of distal end outer tube 1 places overlay film frame；The connector 8 of the distal end outer tube 1 and company
The joint 24 of connection device 23 is connected, and the boss 26 of attachment means 23 is affiliated to the sliding part 20 of handle 16 and is connected or is flexibly connected,
And before the distal end outer tube is for insertion blood vessel, by tightening the bolt 29 on safety lock 27 so that strain relief sleeve pipe 28 blocks
Be connected in handle 16, attachment means 23 is locked relative to the handle 16, prevent the attachment means 23 and distal end outer tube 1 relative to
Handle 16 is moved axially；
Secondly, in the distal end outer tube 1 and axis 9 being inserted into blood vessel, show that the distal end outer tube 1 enters blood by indicating ring 2
Position in pipe, when affected area is reached, unscrews the bolt 29 of the safety lock 27, and relative to fixed handle 17, direction initialization revolves
Turn the rotary handle 18, so that the sliding part 20 is moved axially backward in guide groove 19 along guide groove 19, driven by sliding part 20
Attachment means 23 and distal end outer tube 1 are slow in intravascular to be retreated, so as to discharge overlay film frame；
Then, rotating the rotary handle 18 drive distal end outer tube 1 and moving makes the speed of overlay film frame release slower, can be with essence
Really the length of control overlay film frame release, when 1 to 2 section overlay film frame is discharged, suspends the rotation of handle 16, now overlay film branch
Frame front end indicates the indicating (mark) of overlay film original position to launch with overlay film frame, and instruction overlay film frame that can be apparent will
The position of placement, and overlay film frame is not also adherent does not block aortic flow, adjustment of the without prejudice to overlay film frame position；It is logical
Whether consistent with expected setting overlay film frame placement overlay film original position cross observation indicating position, if indicating is forward, slowly
Whole induction system to target location is moved backward, pushes away whole induction system slow forward if indicating rearward to target location,
So as to realize the precise positioning of overlay film frame, after support is accurately positioned, end outer tube 1 is zoomed out backward, make overlay film frame quick
Release, it is to avoid overlay film frame blocks aortic flow for a long time, influences surgical effect or human body is caused serious harm.
The stent delivery system provided using the present embodiment, including distal end outer tube 1, the axis that is arranged in distal end outer tube 1
9th, the company for the handle 16 that enables overlay film frame to be accurately positioned in affected area and for connecting distal end outer tube 1 and handle 16
Connection device 23；Support overlay film frame is fixed by the axis 9, the flexible conical first 10 of the axis 9 is guided outside the axis 9 and distal end
Pipe 1 is delivered to affected area by blood vessel, by overlay film frame, and enables distal end outer tube 1 in focus by rotating rotary handle 18
Place retreats, the position of the indicating position adjustment stent delivery system under X-ray development according to overlay film frame, so that the support is conveyed
System carries out precise positioning to overlay film frame.After overlay film frame is accurately positioned, end outer tube 1 is zoomed out backward, make overlay film frame quick
Release, it is to avoid overlay film frame blocks aortic flow for a long time, influences surgical effect or human body is caused serious harm.
Further, the stent delivery system that the present embodiment is provided, simple structure, with induction system phase of the prior art
Than the production cost for effectively reducing.And, the pipe shaft 3 of the distal end outer tube 1 of the stent delivery system and the thin wall shaft 12 of axis 9
Between overlay film frame is set so that the size of the pipe shaft 3 reduces, and the operation effectively reduced during stent delivery system is difficult
Degree.And by the locking connection device 23 of safety lock 27, and avoid distal end outer tube 1 and attachment means 23 in vascular process is inserted,
It is relative in operation preparation and transportation to slide, so as to discharge the situation of the overlay film frame in advance, and filled by the connection
Put 23 to be connected or be flexibly connected with being affiliated to for sliding part 20, be easy to enough quick releases after overlay film frame precise positioning, effectively improve
The rate of release of overlay film frame.So as to effectively reduce the time of obscuration blocks blood vessel, the wound that reduction is caused to blood vessel, it is to avoid go out
The injury that existing blood vessel blockage is caused to human body.
It should be noted that herein, term " including ", "comprising" or its any other variant be intended to non-row
His property is included, so that process, method, article or equipment including a series of key elements not only include those key elements, and
And also include other key elements being not expressly set out, or also include for this process, method, article or equipment institute are intrinsic
Key element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that including institute
Also there is other identical element in process, method, article or the equipment of stating key element.
The above is only specific embodiment of the invention, is made skilled artisans appreciate that or realizing this hair
It is bright.Various modifications to these embodiments will be apparent to one skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, the present invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The scope most wide for causing.
Claims (8)
1. a kind of stent delivery system, it is characterised in that including：Handle (16), attachment means (23), distal end outer tube (1), safety
Lock (27) and axis (9), the handle (16), the attachment means (23) and the distal end outer tube (1) are sequentially connected；Wherein,
The axis (9) is arranged in the distal end outer tube (1) and the attachment means (23) and through the handle (16)
In, and the axis (9), for fixed support overlay film frame, the axis (9) includes thin wall shaft (12), the overlay film frame set
It is located at the thin wall shaft (12)；
The handle (16) includes fixed handle (17) and rotary handle (18), and the fixed handle (17) is socketed in and the rotation
The front end of handle (18) is changed hands, and the rotary handle (18) rotates relative to the fixed handle (17), and drive the connection
Device (23) and the distal end outer tube (1) are mobile；
The safety lock (27) connects the fixed handle (17)；Wherein：
Guide groove (19), guide groove lock (21) and sliding part are provided with the fixed handle (17) and the rotary handle (18)
(20)；
The sliding part (20) is set in the guide groove (19), and the outside screw of the sliding part (20) and the rotation hand
The inside thread occlusion of handle (18), the sliding part (20) moves axially along the guide groove (19)；
The guide groove (19) is fixed in the handle (16) by guide groove lock (21), and guide groove lock (21) is for fixing
The guide groove (19)；
The sliding part (20) is flexibly connected or is affiliated to and is connected with one end of the attachment means (23), and the sliding part (20)
Moved axially along the guide groove (19), and drive the attachment means (23) and the distal end outer tube (1) mobile.
2. stent delivery system according to claim 1, it is characterised in that the safety lock (27) includes strain relief set
Pipe (28) and bolt (29), wherein,
The strain relief sleeve pipe (28) connects the bolt (29)；
The strain relief sleeve pipe (28) is for being connected to the front end of the fixed handle (17), and the strain relief sleeve pipe
(28) for locking and prevent the attachment means (23) and the distal end outer tube (1) relative to the fixed handle (17) axially
It is mobile.
3. stent delivery system according to claim 1, it is characterised in that the distal end outer tube (1) includes indicating ring
(2), pipe shaft (3), hemostasis valve seat (5), side pipe (6), valve (7) and connector (8), wherein,
It is provided with the pipe shaft (3) in hollow lumen, the tube chamber for placing the axis (9)；
The indicating ring (2) is arranged on the front end of the pipe shaft (3), and the hemostasis valve seat (5) is arranged on the end of the pipe shaft (3)
End, and hemostasis valve seat (5) is built-in with haemostatic valve (4)；
Hemostasis valve seat (5) connects the connector (8), and the connector (8) is connected with the attachment means (23)；
The inner chamber of hemostasis valve seat (5) connects the valve (7) by the side pipe (6).
4. stent delivery system according to claim 1, it is characterised in that the two ends of the attachment means (23) respectively with
The connector (8) of the distal end outer tube (1) is connected with the sliding part (20) set in the handle (16)；Wherein,
It is affiliated between the attachment means (23) and the sliding part (20) set in the handle (16) and is connected or is flexibly connected.
5. stent delivery system according to claim 1, it is characterised in that the axis (9) also include conical head (10),
Support shaft (13), reinforced shaft (14) and guidewire lumen (15), the conical head (10) connect the thin wall shaft (12)；Wherein,
The guidewire lumen (15) is described to lead through the thin wall shaft (12), the support shaft (13) and the reinforced shaft (14)
Seal wire is placed in silk chamber (15), and the seal wire runs through the axis (9)；
The thin wall shaft (12) and the support shaft (13) are arranged in the tube chamber of the distal end outer tube (1), the conical head
(10) the distal end outer tube (1) is stretched out, and the end of the conical head (10) is correspondingly arranged at the indicating of the distal end outer tube (1)
The position of ring (2).
6. stent delivery system according to claim 1 or 5, it is characterised in that the thin wall shaft (12) of the axis (9) with
There is cylindrical space between the inwall of the tube chamber of the distal end outer tube (1)；Wherein,
The cylindrical space is used to place the overlay film frame, and the axis (9) the support fixation overlay film frame.
7. stent delivery system according to claim 5, it is characterised in that the conical head (10) is flexible conical head.
8. stent delivery system according to claim 5, it is characterised in that the axis (9) also includes rear release device
(11), wherein,
The rear release device (11) is arranged between the conical head (10) and the thin wall shaft (12), and the rear release dress
Put (11) and the handle (16) end is provided with control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410797899.4A CN104398330B (en) | 2014-12-19 | 2014-12-19 | Stent delivery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410797899.4A CN104398330B (en) | 2014-12-19 | 2014-12-19 | Stent delivery system |
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| Publication Number | Publication Date |
|---|---|
| CN104398330A CN104398330A (en) | 2015-03-11 |
| CN104398330B true CN104398330B (en) | 2017-07-07 |
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| CN201410797899.4A Active CN104398330B (en) | 2014-12-19 | 2014-12-19 | Stent delivery system |
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| CN106037834B (en) * | 2016-05-13 | 2018-10-12 | 广州新诚生物科技有限公司 | Heart occluder can position transport system |
| CN106038014B (en) * | 2016-08-18 | 2017-07-21 | 苏州万斯医疗科技有限公司 | A kind of stent delivery system |
| CN106691648A (en) * | 2016-12-20 | 2017-05-24 | 心凯诺医疗科技(上海)有限公司 | Accurately-releasable self-expanding stent conveying system |
| CN106691627A (en) * | 2017-03-08 | 2017-05-24 | 湖南埃普特医疗器械有限公司 | Intracavity temporary supporting device |
| CN110160676B (en) * | 2018-02-11 | 2021-10-26 | 上海微创电生理医疗科技股份有限公司 | Pressure sensor and electrophysiology catheter thereof |
| CN109009589A (en) * | 2018-08-22 | 2018-12-18 | 湖南埃普特医疗器械有限公司 | A kind of ventricle capacity-reduction device and its transportation system |
| CN109199659B (en) * | 2018-09-12 | 2020-04-21 | 湖南埃普特医疗器械有限公司 | Support conveying system |
| RU2710216C1 (en) * | 2018-09-13 | 2019-12-25 | Общество с ограниченной ответственностью "СЕВЕН САНС" | Housing of a device for positioning a coronary stent or coronary balloon in coronary arteries |
| US10449073B1 (en) * | 2018-09-18 | 2019-10-22 | Vesper Medical, Inc. | Rotary handle stent delivery system and method |
| CN109303629B (en) * | 2018-10-22 | 2023-11-28 | 中国人民解放军陆军军医大学第一附属医院 | 3D prints vascular stent conveyer |
| CN111407463B (en) * | 2020-03-19 | 2022-08-12 | 湖南埃普特医疗器械有限公司 | Covered stent system |
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| US20040138734A1 (en) * | 2001-04-11 | 2004-07-15 | Trivascular, Inc. | Delivery system and method for bifurcated graft |
| EP1765221A1 (en) * | 2004-06-16 | 2007-03-28 | Cook Incorporated | Thoracic deployment device and stent graft |
| US20060155366A1 (en) * | 2005-01-10 | 2006-07-13 | Laduca Robert | Apparatus and method for deploying an implantable device within the body |
| US8475523B2 (en) * | 2010-02-17 | 2013-07-02 | Medtronic, Inc. | Distal tip assembly for a heart valve delivery catheter |
| CN102892389B (en) * | 2010-05-14 | 2015-06-03 | 美敦力瓦斯科尔勒公司 | Catheter handle for prosthesis delivery system |
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