CN109602522A - Self-expansion type braided support and its conveying device - Google Patents
Self-expansion type braided support and its conveying device Download PDFInfo
- Publication number
- CN109602522A CN109602522A CN201811488344.6A CN201811488344A CN109602522A CN 109602522 A CN109602522 A CN 109602522A CN 201811488344 A CN201811488344 A CN 201811488344A CN 109602522 A CN109602522 A CN 109602522A
- Authority
- CN
- China
- Prior art keywords
- bracket
- pipe
- stent
- constraint
- release
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/86—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
- A61F2/90—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/95—Instruments specially adapted for placement or removal of stents or stent-grafts
- A61F2/958—Inflatable balloons for placing stents or stent-grafts
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M31/00—Devices for introducing or retaining media, e.g. remedies, in cavities of the body
Landscapes
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Vascular Medicine (AREA)
- Hematology (AREA)
- Anesthesiology (AREA)
- Media Introduction/Drainage Providing Device (AREA)
Abstract
The present invention relates to a kind of self-expansion type braided support and its conveying devices.Specifically, the present invention provides a kind of self-expansion type braided support, the length before the bracket release is 1.82-2.22 times of length after bracket release；The axial cripetura rate of the bracket is 45-55%；The angle of weave of the bracket is 90-140 °.Invention also provides a kind of for conveying the conveying device of the bracket.Self-expansion type braided support of the invention avoids bracket from design angle and is elongated release, bracket stent pushing pipe during release is mobile to distal end, to compensate for the axial cripetura amount after bracket release, vascular patency after improving Weaving type stenter to implant, to improve the therapeutic effect of bracket.
Description
The application be the applying date be on December 07th, 2017, application No. is 201711285758.4, it is entitled " from swollen
The divisional application of the patent application of expanding braided support and its conveying device ".
Technical field
The invention belongs to medical instruments fields, and in particular to a kind of self-expansion type braided support and its conveying device.
Background technique
Vascular diseases, Chinese medicine are referred to as vascular disease, and disease incidence has obvious rising in recent years, common such as arteriarctia
Lesion, arteriovenous thrombosis, aneurysm etc..Peripheral arterial stenosis occlusion venereal disease becomes, and is common in atherosclerosis, glycosuria
Disease, aorto-arteritis etc. are mainly shown as skin temperature reduction, muscular atrophy, touch less than pulse or pulse weakened, intermittent lame
Row occurs distal limb necrosis, or even needs amputation when serious, threat to life when serious；Venous Thrombosis can cause suffering limb
Blood stream stasis, swelling, while the risk for thering is Fatal pulmonary embolism to occur；Aneurism disease has knurl rupture big out at any time
Blood, dead risk.Vascular diseases have very high disability rate and certain lethality, medical treatment to have little effect, operative treatment
For invasive treatment method, and effect is limited.
According to the peripheral arterial disease intravascular intervention of United States cardiovascular radiographies in 2014 and intervention association (SCAI) publication
Treatment common recognition statement, almost all of master-common iliac artery peripheral arterial disease (PAD) can use intravascular Interventional Treatment, but
Evidence show a certain brackets to be better than other kinds of bracket.For TASC (TransAtlantic Inter-Society
The general Atlantic Ocean cooperative groups of Consensus) it is classified as A, B, C grades of master-common iliac artery PAD, intravascular Interventional Treatment is cut better than inner membrance
Except art, evidence shows the former in terms of reducing mortality more advantage (endarterectomy hospital mortality 2.7%).
Due to operation risk problem, open operative treatment is the last selection of such disease；The success rate of intravascular Interventional Treatment is super
90% is crossed, the death rate is low, is to change lifestyles and move not the Suitable therapeutic strategy that can be effectively controlled patient with sympotoms.
The classification standard of intravascular stent has very much, can be divided into balloon-expandable and self-expansion type branch with bracket delivery mode
Frame is divided into bare bracket, coating stent of medicine and overlay film frame with cradling function.It is divided into tubular bracket, cyclic annular branch with supporting structure
Frame, winding bracket and braided support.Timbering material includes stainless steel, NiTi and cochrome bracket.
Balloon expandable stent itself is nonelastic, and design is that bracket is mounted on sacculus in advance, by foley's tube that bracket is defeated
It send to vascular lesion, is attached at vascular wall by vascular wall retraction force after balloon expandable to certain diameter, vascular wall is not produced
Raw prolonged expansion tension.Great advantage is release registration, is suitable for opening lesion, such as vertebral artery opening, arteria renalis opening
Lesion.Additionally have the characteristics that after release that axial cripetura phenomenon is unobvious, radial support power is better than self-expandable stent.But sacculus
Expandable stent itself easily occurs collapsing occlusion after lacking flexibility, being pressurized, and flexibility is not good enough, is poorly suited for cranium arteria carotis externa, stock
Popliteal artery etc. is vulnerable to pressure or turning joint position.It is suitable for the limitation of more straight, inactive joint area out of shape in peripheral blood vessel
Short section stenosis occlusion lesion (< 4cm).
Self-expanding stent removes release branch by the way that bracket is compressed in delivery sheath and is transported at vascular lesion outside sheath
Frame relies on and obtains equilibrium relation between bracket itself expansion tension and the elasticity limitation of vascular wall to attach vascular wall.But from
Expanding stent disadvantage includes: that bracket discharges Shi Youqian to jump and axial cripetura phenomenon, and it is difficult to be accurately positioned release；Bracket is from sheath
Axial length after discharging in pipe can be remarkably decreased, stent length obviously axial cripetura, and bracket can be with releasing during release
It puts row into and proximally shifts, need patient artificially to adjust the position of transportation system in the course of surgery, cause in surgical procedure
Patient can not accurately control the positioning of bracket, and bracket is in the presence of proximally and distally location difficulty, releasing position are not satisfactory；Bracket
Flexibility and counter-bending kinking performance can not adapt to completely this blood vessel by human body continuous mechanical movement for a long time answering for generating
Miscellaneous stress easily occurs stress fatigue after being chronically implanted and bracket fracture occurs, blood vessel is caused restenosis symptom occur.Blood vessel is at a specified future date
Patency rate decline.Thus such bracket is barely satisfactory always for the treatment of vascular lesion.
For this purpose, this field has needed to develop a kind of endovascular stent and its conveying device, bracket answer it is with good performance,
And conveying device can make bracket accurate and quickly discharge into target lesion blood vessel.
Summary of the invention
The object of the present invention is to provide one kind can be realized intravascular accurate release, avoids by excessive elongation/compression release,
Improve vascular patency, and accurate positioning, easy to operate self-expansion type braided support and its conveying device.
The first aspect of the present invention provides a kind of self-expansion type braided support, and the length before the bracket release is bracket
1.82-2.22 times of length after release；The axial cripetura rate of the bracket is 45-55%；The angle of weave of the bracket is 90-
140°。
In another preferred example, the length before the bracket release is 1.85-2.1 times of length after bracket release, preferably
1.9-1.95 times.
In another preferred example, the axial cripetura rate of the bracket is 46-52%, preferred 47-49%.
In another preferred example, the angle of weave of the bracket is 110-135 °, preferably 115-125 °.
In another preferred example, it is 1.6-2.13mm that the bracket, which loads compressed outer diameter,.
In another preferred example, it is 1.7-2.0mm, preferably 1.75-1.9mm that the bracket, which loads compressed outer diameter,.
In another preferred example, the string diameter of the bracket is 0.1-0.2mm.
In another preferred example, the diameter of the bracket is 4-8mm.
In another preferred example, the diameter of the bracket is 4.5-7.0mm.
In another preferred example, the braiding head number of the bracket is 4-8 head.
The second aspect of the present invention provides a kind of stent conveying device, and the conveying device includes: (a) present invention first
The self-expansion type braided support that aspect provides；(b) transfer unit.
In another preferred example, the transfer unit include inner tube, stent pushing pipe, bracket constraint pipe, handle casing,
Driving device connector, female Luer, bracket fetter pipe fitting, stent pushing tube drive device, transmission device.
In another preferred example, the outer diameter of the bracket constraint pipe is 2.0-2.33mm.
In another preferred example, the internal diameter of bracket constraint pipe is 1.6-2.13mm.
In another preferred example, the stent pushing tube drive device includes that the hardness connecting with stent pushing pipe pushes away
Pipe, and the driving handle connecting with the hardness push pipe are sent, the distal end of the hardness push pipe is close with the stent pushing pipe
End connection, the driving device connector are fixed on the hardness push tube outer surface.
In another preferred example, the hardness push pipe distal end is placed in the bracket constraint pipe.
In another preferred example, it shows, is used for scale on the driving handle being connect with the hardness push pipe
The display hardness push pipe distance mobile to distal end.
In another preferred example, the distance between the hardness push pipe proximal end and bracket constraint pipe proximal end is are loaded certainly
2-2.5 times of expansion type braided support nominal length.
In another preferred example, in the inner tube be arranged developing ring mark, be used to indicate bracket release after proximal end and
Remote location.
In another preferred example, the driving device connector and bracket constraint pipe fitting are along hard slide bar progress phase
To movement.
In another preferred example, the transmission device is made of conveyer belt and fixed pulley.
In another preferred example, the bracket constraint pipe is for fettering the bracket loaded, and the transmission device is by conveyer belt
It is formed with the fixed pulley, the conveyer belt passes through the fixed pulley, and described conveyer belt one end and the bracket fetter the outer of pipe
Surface fetters pipe fitting by the bracket and is attached, and the bracket constraint pipe fitting is fixed on the close of the bracket constraint pipe
Hold outer surface, the proximal end of the stent pushing pipe connects the stent pushing tube drive device, the other end of the conveyer belt and
The stent pushing tube drive device is attached by the driving device connector.
In another preferred example, the transmission device is made of gear and rack gear.
In another preferred example, the bracket constraint pipe is for fettering the bracket loaded, and the transmission device is by two phases
It is formed to rack gear S1, S2 and gear S3 of movement, the rack gear S2 fetters pipe fitting and bracket by conveyer belt and the bracket
Pipe connection is fettered, the rack gear S1 is connected by hardness push pipe with stent pushing pipe, by the gear S3 clockwise movement,
Drive rack S1 and S2 are moved toward one another, and the bracket constraint pipe fitting is fixed on the proximal end outer surface of the bracket constraint pipe,
The proximal end of the stent pushing pipe connects the stent pushing tube drive device.
In another preferred example, the stent pushing pipe that the transmission device formed with the gear and the rack gear is used cooperatively
Driving device is driven using gun-type handle, and the gun-type handle and the gear and the rack gear form a separate type
Handle.
In another preferred example, the bracket constraint pipe is joined by the rigid connection part of buckle and the gun-type handle
It connects, when the rigid connection part is mobile to distal end, drives the bracket to fetter pipe mobile to distal end；And the stent pushing pipe is same
Sample is coupled by the buckle with the rigid connection part of the gun-type handle, when the rigid connection part moves to the near end,
The stent pushing pipe is driven to move to the near end, and the rigid connection part is moved toward one another by the realization of gun-type handle, to drive
It moves the bracket constraint pipe and stent pushing pipe (2) keeps moving toward one another.
In another preferred example, the buckle is made of positioning chuck and positioning cards, and the positioning chuck is fixed on institute
Bracket constraint pipe surface is stated, the positioning cards are fixed on the rigid connection part.
In another preferred example, the buckle is made of positioning chuck and positioning cards, and the positioning chuck is fixed on institute
State stent pushing pipe) surface, and positioning cards) be fixed on rigid connection part.
In another preferred example, the rigid connection part is connect with rack gear S2, and rigid connection part is connect with rack gear S1.Hand
Handle driving gear S3 does clockwise movement.
It should be understood that above-mentioned each technical characteristic of the invention and having in below (eg embodiment) within the scope of the present invention
It can be combined with each other between each technical characteristic of body description, to form a new or preferred technical solution.As space is limited, exist
This no longer tires out one by one states.
Detailed description of the invention
Fig. 1 is angle of weave schematic diagram in one embodiment of the invention.
Fig. 2 is braided support nominal length and laden bracket front view in one embodiment of the invention.
Fig. 3 is fixed pulley transmission device schematic diagram in one embodiment of the invention.
Fig. 4 is one embodiment of the invention middle gear rack gear schematic diagram.
Fig. 5 is gun-type handle sectional view in one embodiment of the invention.
Fig. 6 is to buckle schematic diagram in one embodiment of the invention.
Fig. 7 is 1 year vascular patency of braided support difference releasing effect in a comparative example of the invention
Wherein, number A1 represents angle of weave, and L represents bracket nominal length, and D represents bracket nominal diameter, and D1 represents branch
Diameter after rack-mounted load；L1 represents length after bracket loads.1 represents inner tube, and 2 represent stent pushing pipe, and 3, which represent bracket constraint, manages, and 4
Represent handle casing, 5 represent driving device connector, 6 represent female Luer, 7 represent bracket constraint pipe fitting, 8, which represent bracket, pushes away
Tube drive device is sent, 9 represent conveyer belt, and 10 represent fixed pulley, and 11 and 12 represent rigid connection part, and 13 and 14 represent gun-type hand
Handle, 15 represent buckle, and 151 represent positioning cards, and 152 represent positioning chuck.
Specific embodiment
The present invention by extensively and in-depth study, developing a kind of self-expansion type braided support and its conveying dress for the first time
It sets, the length before the bracket release is 1.82-2.22 times of length after bracket release；The axial cripetura rate of the bracket is
45-55%；The angle of weave of the bracket is 90-140 °.The present invention develops self-expansion type braided support and its conveying device energy
The accurate release for enough realizing bracket avoids the elongation release of bracket, hence it is evident that the vascular patency after improving stenter to implant, and
Accurate positioning, it is easy to operate.Based on above-mentioned discovery, inventor completes the present invention.
Term
As used herein, term " nominal length " refers to the length after bracket release, and as bracket is fettered from bracket and managed
Axial length after middle disengaging.
As used herein, term " diameter of bracket " refers to the outer diameter of bracket.
As used herein, term " string diameter of bracket " refers to the diameter of scaffolding thread.
As used herein, term " bracket loads compressed outer diameter " refers to that bracket loading is compressed in inside transportation system
Bracket outer diameter.
As used herein, the axial direction that term " length before bracket release " refers to that bracket is loaded in bracket constraint pipe is long
Degree.
As used herein, after term " length after bracket release " refers to that bracket releases inside transportation system
Axial length.
As used herein, term " axial cripetura rate " refers to after discharging for the length before bracket release with bracket in length
Percentage variation.
Self-expansion type braided support
The present invention provides a kind of self-expansion type braided support, and the length before the bracket release is length after bracket release
1.82-2.22 again；The axial cripetura rate of the bracket is 45-55%；The angle of weave of the bracket is 90-140.
The axial direction cripetura rate refers to that the length before discharging for bracket changes with the percentage in length after bracket release.
In another preferred example, the length before the bracket release is 1.85-2.1 times of length after bracket release, preferably
1.9-1.95 times.
In another preferred example, the axial cripetura rate of the bracket is 46-52%, preferred 47-49%.
In another preferred example, the angle of weave of the bracket is 110-135 °, preferably 115-125 °.
When the angle of weave A1 is defined as bracket and is in nominal diameter D, scaffolding thread intersects in the axial direction to be formed by
Angle A 1, as shown in Figure 1, the nominal diameter be diameter of the bracket under nominal length, i.e., bracket release after diameter.
By the experiment and research repeatedly of inventor, find the angle of weave A1 of self-expansion type braided support at 90-140 °,
Bracket has preferable radial support power and flexibility and lower axial cripetura rate, and angle of weave A1 is bigger, support force and
Flexibility is better, but the axial cripetura rate of bracket is bigger, is less susceptible to convey.Further, inventor passes through multiple test
The study found that support force, flexibility and the axial cripetura rate of bracket reach when the angle of weave A1 of bracket is in 110-135 °
One ideal balance.Further, when the angle of weave A1 of bracket is in 115-125 DEG C, bracket has good branch
Support force and flexibility, and suitable axial cripetura rate.The axial cripetura rate of bracket is between 47%-49% at this time.At this time
Length before bracket release is between 1.90-1.95 times of length after bracket discharges.As shown in Figure 2.
In the present invention, the length before the bracket release is 1.82-2.22 times of length after bracket release, preferably 1.85-
2.1 times, more preferable 1.9-1.95 times, it can be avoided bracket and discharged by axial elongation.Self-expansion type braided support quilt of the invention
Light axial compression release overcomes during operation discharges bracket, since patient may proximally slightly mobile conveying
System, the problem of causing bracket to be axially slightly elongated extension.And existing clinical experimental study discovery, bracket is by axial elongation
Afterwards, the patency rate that will lead to lesion vessels is remarkably decreased.Therefore self-expansion type braided support of the invention can compensate for performing the operation
Bracket may be discharged by slight elongation in journey.
In a preferred embodiment of the invention, inventor respectively loads the bracket of self-expansion type braided support compressed
The features such as outer diameter, the string diameter of bracket, the diameter of bracket and braiding head number carry out preferred design, specific as follows:
In a preferred embodiment, the intravascular stent loads compressed outer diameter and has to the passability of bracket and conveying device
Large effect.The compressed outer diameter of bracket loading is smaller, and the bracket for loading bracket fetters pipe diameter can be smaller, bracket
It is better with the passability of transportation system in the blood vessels.But intravascular stent loads the compressed smaller bracket that also increases of outer diameter from branch
The difficulty discharged in frame constraint pipe, the release force that bracket is pushed from bracket constraint pipe can dramatically increase, and the present invention is to branch
Frame reprints compressed outer diameter and carries out screening and optimizing, and selecting bracket to reprint compressed outer diameter is 1.6-2.13mm, preferably
1.7-2.0mm more preferably 1.75-1.9mm.
In a preferred embodiment, the string diameter of the bracket has a significant impact bracket support force, and the string diameter of bracket is bigger, branch
The support force of frame almost rises at square grade, but the string diameter of biggish bracket also will affect blood vessel and wrap up the endotheliosis of bracket
Bracket effect.In the present invention, by experimental design and preferred research, the string diameter 0.1-0.2mm of the bracket, it can be ensured that bracket
Endothelialization can be completed in a relatively short time with good support performance and bracket.
In a preferred embodiment, the diameter of the bracket is 4-8mm.In the present invention for treating periphery lower limb stenotic lesion
In embodiment, the self-expansion type braided support that the diameter for bracket is 4-8mm has to the good support performance of blood vessel, can
Effective support to stenotic plaque is kept, and bracket has lower force radially, bracket is avoided to generate vascular tissue
Stimulation leads to blood vessel endothelium hyperplasia, while bracket also has good flexibility and buckle resistance energy in the blood vessel, can
Adapt to the distorted configurations and complicated force environment of blood vessel, it is ensured that support force quickly can be conveyed and be discharged, and be had lower
Axial cripetura rate.In another preference of the invention, the diameter of the bracket of the Zhi Suoshu is 4.5-7.0mm.
In another preferred example, the Stent head number is defined as the mesh quantity of bracket circumferencial direction, in bracket
In the case that diameter determines, the braiding head number of braided support determines the size of Stent mesh area, and then affects branch
The metal covering area of frame in the blood vessel.Braiding head number is more, and the mesh area of bracket is smaller, and the metal of bracket in the blood vessel covers
Capping product can significantly increase, this can seriously affect bracket by endothelial cell package covering endothelialization process, the present invention in, pass through
For our experimental design with preferably, the braiding head number of the bracket is 4-8 head.Bracket has more suitable mesh face at this time
Product, while the metal covering area of bracket is between 16-27%.
The conveying device of self-expansion type braided support
The present invention provides a kind of conveying device, the conveying device includes:
(a) self-expansion type braided support；
(b) transfer unit.
In a preferred embodiment of the present invention, the transfer unit includes inner tube 1, stent pushing pipe 2, bracket constraint
Pipe 3, driving device connector 5, female Luer 6, bracket constraint pipe fitting 7, stent pushing tube drive device 8, passes handle casing 4
Dynamic device；
Through experimental study, it is preferred for loading outer diameter of the bracket constraint pipe 3 with 6-7F of compressed stent, i.e. bracket
The outer diameter of pipe is fettered between 2.0-2.33mm.
In another preferred example, the internal diameter of bracket constraint pipe 3 is 1.6-2.13mm.Inventor sends out after study
It is existing, in a certain range, bracket load compressed outer diameter the axial cripetura rate of bracket is influenced it is smaller, since bracket loads
The angle of weave being compressed in bracket constraint pipe is smaller, and slight variation occurs for angle of weave compressed to bracket loading at this time
Outer diameter is affected, but influences on the axial cripetura rate of bracket smaller.Therefore, bracket is loaded in the bracket of internal diameter 1.6-2.13mm
There is approximate axial cripetura rate in constraint pipe.
In another preferred example, the stent pushing tube drive device 8 includes a hardness connecting with stent pushing pipe 2
Push pipe, and the driving handle being connect with the hardness push pipe, the distal end of the hardness push pipe and the stent pushing pipe 2
Proximal end connection, the driving device connector 5 are fixed on the hardness push tube outer surface.It is preferred that the hardness push pipe distal end is set
In bracket constraint pipe 3.In another preferred example, between the hardness push pipe proximal end and bracket constraint 3 proximal end of pipe
Distance by 2-2.5 times of loading self-expansion type braided support nominal length.Bracket discharge when, it is described hardness push pipe distal end to
Distal end moves into the bracket constraint pipe 3, and the bracket constraint 3 proximal end of pipe moves to the near end, and making bracket, compensation is released in situ
It is placed at target lesion vessel position.
In another preferred example, it shows, is used for scale on the driving handle being connect with the hardness push pipe
The display hardness push pipe distance mobile to distal end.The length of bracket release is observed convenient for patient.
In another preferred example, in the inner tube 1 be arranged developing ring mark, be used to indicate bracket release after proximal end and
Remote location.
In another preferred example, the driving device connector 5 and bracket constraint pipe fitting 7 are carried out along hard slide bar
It moves toward one another.
In another preferred example, the transmission device is made of conveyer belt 9 and fixed pulley 10.
In another preferred example, the bracket constraint pipe 3 is used to fetter the bracket loaded, and the transmission device is by conveyer belt
9 and the fixed pulley 10 form, the conveyer belt 9 pass through the fixed pulley 10, described 9 one end of conveyer belt and the bracket constraint
The outer surface of pipe 3 fetters pipe fitting 7 by the bracket and is attached, and the bracket constraint pipe fitting 7 is fixed on the bracket
The proximal end outer surface of pipe 3 is fettered, the proximal end of the stent pushing pipe 2 connects the stent pushing tube drive device 8, the transmission
It is attached with 9 other end and the stent pushing tube drive device 8 by the driving device connector 5.As shown in Figure 3.
In preference of the present invention, the conveyer belt 9 passes through the fixed pulley 10, is in tension state, the stent pushing pipe driving dress
It is mobile to distal end to set the 8 drivings stent pushing pipe 2, since the bracket fetters pipe 3 by the transmission belt 9 and described determines cunning
Wheel is connect with the stent pushing pipe 2, and the stent pushing tube drive device 8 is also synchronous at this time drives the bracket to fetter pipe 3
It proximally moves towards, i.e., the described bracket constraint pipe 3 and the stent pushing pipe 2 keep identical rate travel to do opposite fortune
It is dynamic.
In another preferred example, the transmission device is removed is realized in opposite directions using the transmission device that conveyer belt and fixed pulley combine
Movement is outer, and the transmission device is made of gear and rack gear.As shown in Figure 4.
In another preferred example, the bracket constraint pipe 3 is used to fetter the bracket loaded, and the transmission device is by two phases
It is formed to rack gear S1, S2 and gear S3 of movement, the rack gear S2 fetters pipe fitting 7 and bracket by conveyer belt and the bracket
It fetters pipe 3 to connect, the rack gear S1 is connected by hardness push pipe and stent pushing pipe 2, is transported clockwise by the gear S3
Dynamic, drive rack S1 and S2 are moved toward one another, and the bracket constraint pipe fitting 7 is fixed on outside the proximal end of the bracket constraint pipe 3
The proximal end on surface, the stent pushing pipe 2 connects the stent pushing tube drive device 8.
In another preferred example, the stent pushing pipe that the transmission device formed with the gear and the rack gear is used cooperatively
Driving device 8 is driven using gun-type handle, and the gun-type handle and the gear and the rack gear form a separate type
Handle.The separate-type handle can just carry out assembling use with stent conveying device in the course of surgery, without carrying out preoperative packet
Dress uses.
In another preferred example, the rigid connection part 11 that the bracket constraint pipe 3 passes through buckle 15 and the gun-type handle
Coupled, when the rigid connection part 11 is mobile to distal end, drives the bracket to fetter pipe 3 mobile to distal end；And the branch
Frame push pipe 2 is equally coupled by the buckle 15 with the rigid connection part 12 of the gun-type handle, the rigid connection
When part 12 moves to the near end, the stent pushing pipe 2 is driven to move to the near end, and the rigid connection part 11,12 passes through gun-type
The realization of handle 13,14 moves toward one another, so that the bracket constraint pipe 3 and the holding of stent pushing pipe 2 be driven to move toward one another.Such as Fig. 5
It is shown.
Further, handle and bracket constraint pipe, stent pushing pipe can assemble use in the preoperative.As shown in fig. 6, another
In one preference, the buckle 15 is made of positioning chuck 152 and positioning cards 151, and the positioning chuck 152 is fixed on described
Bracket fetters 3 surface of pipe, and the positioning cards 151 are fixed on the rigid connection part 11.It is preoperative to be stuck in positioning cards 151
In the interannular gap of positioning chuck 152, the rigid connection part 11 as described in the handle drives can be realized, drive the bracket beam
Pipe 3 is tied up to be moved.
In another preferred example, the buckle 15 is made of positioning chuck 152 and positioning cards 151, the positioning chuck
152 are fixed on 2 surface of stent pushing pipe, and positioning cards 151 are fixed on rigid connection part 12.It is preoperative by positioning cards
151 are stuck in the interannular gap of positioning chuck 152, and the rigid connection part 12 as described in the handle drives can be realized, and drive institute
Stent pushing pipe 2 is stated to be moved.
In another preferred example, the rigid connection part 11 is connect with rack gear S2, and rigid connection part 12 and rack gear S1 connect
It connects.Handle 13,14 drives gear S3 to do clockwise movement.
Important technical advantage of the invention
(1) present invention realizes the accurate release of bracket, avoids bracket in operation implantation process by excessive elongation/pressure
Contracting release, hence it is evident that the vascular patency after improving stenter to implant.
(2) in addition, the technical program efficiently solves the mount proximal end positioning of current vascular surgery clinician complaint not
Clear problem, in the reciprocating design of the prior art, bracket is by toward extrapolated, the elongation or compression of bracket depend on doctor paragraph by paragraph
Raw scene operates at once, leads to the releasing position that mount proximal end can not be determined in doctor's art.And if the proximal end distance of bracket
When vascular bifurcation is closer, it is likely that blocking bifurcated vessels, the common practice of doctor is control after the bracket release selected at present
Mount proximal end after release has a certain distance as buffering apart from bifurcated vessels.But the number of buffer distance is unable to control.Such as
Lesion cannot be completely covered apart from excessive apart from bifurcated vessels after bracket release, then need to supplement in proximal end and place one piece of short branch
Frame.The treatment cost of patient is caused to rise.And the present invention then efficiently solves the problems, such as this.Length in the present invention, after bracket release
Degree is close to the half before bracket release, and the releasing position of mount proximal end can carry out observation judgement, bracket before bracket release
The releasing position of proximal end is usually identified by the way that developing mark is arranged in interior pipe surface, and in the present invention, inner tube is released in bracket
It is fixed in position during putting, facilitates doctor and judge the proximal location after bracket release, and it is in the prior art reciprocating
During release, indicate that the developing mark of mount proximal end releasing position moves back and forth during bracket discharges, patient is only
The expection proximal location of bracket can be judged before bracket discharges, and during bracket release, since inner tube/outer tube occurs back and forth
It is mobile, it can not be in art with reference to the proximal end releasing position for judging bracket.
(3) using push release bracket, the troublesome operation of reciprocating release is avoided, in surgical procedure, bracket discharged
Journey is consistent with existing common NiTi cutting support release process, and patient is without relearning release operation；And in the prior art
Reciprocating release need patient voluntarily control bracket release compensation rate, need very brilliant release skill, thus learning curve
It is longer.
Present invention will be further explained below with reference to specific examples.It should be understood that these embodiments are merely to illustrate the present invention
Rather than it limits the scope of the invention.In the following examples, the experimental methods for specific conditions are not specified, usually according to conventional strip
Part, or according to the normal condition proposed by manufacturer.
Embodiment 1
In the present embodiment, bracket is woven using 0.15mm titanium-nickel wire, diameter 4.5mm, Stent head number 4, braid angle
Spending A1 is 120 °, and bracket loading is compressed in bracket constraint pipe, and the bracket released from bracket constraint pipe is axially short
Shrinkage is 47.6%, and the internal diameter of the pipe of bracket constraint at this time is about 1.75mm.In the present embodiment, controlled using fixed pulley transmission device
Bracket constraint pipe 3 and stent pushing pipe 2 are moved toward one another.Transmission device is made of conveyer belt 9 and fixed pulley 10, conveyer belt one
End and the outer surface of bracket constraint pipe 3 fetter pipe fitting 7 by bracket and are attached, and bracket constraint pipe fitting 7 is fixed on bracket
The proximal end outer surface of pipe 3 is fettered, the proximal end of stent pushing pipe 2 connects a driving device 8, and the other end and bracket of conveyer belt 9 push away
Tube drive device 8 is sent to be attached by a driving device connector 5.Conveyer belt 9 passes through fixed pulley 10, tightens shape in tension
State.8 driving arm of driving device pushes pipe 2 to distal end movement, since bracket constraint pipe 3 passes through transmission belt 9 and fixed pulley and branch
Frame pushes pipe 2 and connects, and driving device 8 also synchronizes driving arm constraint pipe 3 and proximally moves towards at this time.That is bracket constraint pipe
3 and stent pushing pipe 2 keep identical rate travel to move toward one another.Meanwhile driving device 8 includes one and stent pushing pipe
The hardness push pipe of connection, and the driving handle being connect with hardness push pipe.The distal end of hardness push pipe is close with stent pushing pipe 2
End connection, driving device connector 5 are fixed on hardness push tube outer surface.It is preferred that hardness push pipe distal end is placed in bracket constraint pipe 3
In.The distance between hardness push pipe proximal end and bracket constraint 3 proximal end of pipe should be more than 2 times of loaded bracket nominal length.Branch
When frame discharges, to distally moving into bracket constraint pipe 3, bracket constraint 3 proximal end of pipe is moved to the near end for hardness push pipe distal end,
Making bracket, compensation discharges at target lesion vessel position in situ.
Embodiment 2
In the present embodiment, bracket is woven using 0.18mm titanium-nickel wire, diameter 7.0mm, Stent head number 6, braid angle
Spending A1 is 118.5 °, and bracket loading is compressed in bracket constraint pipe, and the bracket released from bracket constraint pipe is axial
Cripetura rate is 46.6%, and the internal diameter of the pipe of bracket constraint at this time is about 1.9mm.In the present embodiment, using rack-and-pinion transmission device
Control bracket constraint pipe 3 and stent pushing pipe 2 are moved toward one another.Rack gear S1, S2 that transmission device is moved toward one another by two and
Gear S3 composition, middle rack S2 fetter pipe fitting by conveyer belt and bracket and connect with bracket constraint pipe, and rack gear S1 passes through hard
Property push pipe connected with stent pushing pipe.By loading rotating handle on gear S3, driving gear S3 is rotated clockwise, into
And drive rack S1 and S2 are moved toward one another.
Embodiment 3
In the present embodiment, bracket is woven using 0.15mm titanium-nickel wire, diameter 6.0mm, Stent head number 6, braid angle
Spending A1 is 119 °, and bracket loading is compressed in bracket constraint pipe, and the bracket released from bracket constraint pipe is axially short
Shrinkage is 46.9%, and the internal diameter of the pipe of bracket constraint at this time is about 1.65mm.In the present embodiment, using the identical tooth of same embodiment 2
Wheel rack gear control bracket constraint pipe 3 and stent pushing pipe 2 are moved toward one another.Except that being divided using preoperative
From gun-type lever drive gear S3 rotate clockwise.
Detailed process are as follows: bracket constraint pipe 3 is coupled by buckle 15 with the rigid connection part 11 of handle, rigid connection
When part 11 is mobile to distal end (right end), bracket is driven to fetter pipe 3 mobile to distal end；And stent pushing pipe 2 equally by buckle with
The rigid connection part 12 of handle is coupled, and rigid connection part 12 is when proximally (left end) is mobile, drives stent pushing pipe 2 to close
End movement.And rigid connection part 11 and 12 is moved toward one another by the realization of gun-type handle 13 and 14, so that driving arm fetters 3 He of pipe
The holding of stent pushing pipe 2 moves toward one another.
Further, handle and bracket constraint pipe holder push pipe can assemble use in the preoperative.Buckle 15 is by 152 Hes
151 compositions, as shown in fig. 6,152 are fixed on bracket constraint 3 surface of pipe, and 151 are fixed on rigid connection part 11.It is preoperative to incite somebody to action
151 are stuck in 152 interannular gap, can be realized by handle drives rigid connection part 11, and bracket constraint pipe 3 is driven to be moved
It is dynamic.
It similarly is fixed on 2 surface of stent pushing pipe by 152, and 151 are fixed on rigid connection part 12.It is preoperative by 151
It is stuck in 152 interannular gap, can be realized by handle drives rigid connection part 12, stent pushing pipe 2 is driven to be moved.
Wherein, rigid connection part 11 is connect with S2, and rigid connection part 12 is connect with S1.Handle 13 and 14 drives S3 to do up time
Needle movement.Driving process is the same as conventional gun-type movement mechanism.
1 year patency rate of braided support difference releasing effect is studied
Existing clinical effectiveness shows (as shown in Figure 7) that 1 year vascular patency of braided support difference releasing effect is adopted
With reciprocating release, only 36% bracket realizes bracket and discharges according to nominal length, and 50% bracket is elongated release,
14% bracket is discharged by compression.The stented vessel patency rate for wherein elongating release has dropped at least 15%.Volume is seriously affected
Knit the therapeutic effect of type bracket.And self-expansion type braided support of the invention from design angle avoid bracket excessively elongated or
Compression release, bracket stent pushing pipe during release is mobile to distal end, to compensate for the axial cripetura after bracket release
Amount improves the stented vessel patency rate of Weaving type bracket, to improve the therapeutic effect of bracket.
All references mentioned in the present invention is incorporated herein by reference, independent just as each document
It is incorporated as with reference to such.In addition, it should also be understood that, after reading the above teachings of the present invention, those skilled in the art can
To make various changes or modifications to the present invention, such equivalent forms equally fall within model defined by the application the appended claims
It encloses.
Claims (10)
1. a kind of stent conveying device, which is characterized in that the conveying device includes:
(a) self-expansion type braided support；
(b) transfer unit；
Length before the bracket release is 1.82-2.22 times of length after bracket release；The axial cripetura rate of the bracket is
45-55%；The angle of weave of the bracket is 90-140 °, and it is 1.6-2.13mm that the bracket, which loads compressed outer diameter, described
The string diameter of bracket is 0.1-0.2mm；The diameter of the bracket is 4-8mm；
The transfer unit includes inner tube (1), stent pushing pipe (2), bracket constraint pipe (3), handle casing (4), driving dress
Set connector (5), female Luer (6), bracket constraint pipe fitting (7), stent pushing tube drive device (8), transmission device；
The stent pushing tube drive device (8) include one connect with stent pushing pipe (2) hardness push manage, and with it is described
The driving handle of hardness push pipe connection, the distal end of the hardness push pipe is connect with stent pushing pipe (2) proximal end, described
Driving device connector (5) is fixed on the hardness push tube outer surface；
The distal end of the hardness push pipe is placed in the bracket constraint pipe；
It is shown on the driving handle being connect with the hardness push pipe with scale, for showing hardness push pipe Xiang Yuanduan
Mobile distance；
The proximal end of the hardness push pipe and bracket fetter the distance between proximal end of pipe to be loaded self-expansion type braided support
2-2.5 times of nominal length；
Developing ring mark is set in the inner tube, the proximally and distally position after being used to indicate bracket release；
The transmission device is made of conveyer belt and fixed pulley, and the bracket constraint pipe is for fettering the bracket loaded, the biography
Dynamic device is made of conveyer belt and the fixed pulley, and the conveyer belt passes through the fixed pulley, described conveyer belt one end and described
The outer surface of bracket constraint pipe fetters pipe fitting by the bracket and is attached, and the bracket constraint pipe fitting is fixed on described
Bracket fetters the proximal end outer surface of pipe, and the proximal end of the stent pushing pipe connects the stent pushing tube drive device, the biography
The other end and the stent pushing tube drive device for sending band are attached by the driving device connector；Or the transmission dress
It sets and is made of gear and rack gear, the bracket constraint pipe is for fettering the bracket loaded, and the transmission device is by two opposite fortune
Dynamic rack gear S1, S2 and gear S3 composition, the rack gear S2 fetters pipe fitting by conveyer belt and the bracket and bracket fetters
Pipe connection, the rack gear S1 are connected by hardness push pipe with stent pushing pipe, and the gear S3 clockwise movement, driving are passed through
Rack gear S1 and S2 are moved toward one another, and the bracket constraint pipe fitting is fixed on the proximal end outer surface of the bracket constraint pipe, described
The proximal end of stent pushing pipe connects the stent pushing tube drive device.
2. stent conveying device as described in claim 1, which is characterized in that the length before the bracket release is bracket release
1.9-1.95 times of length afterwards.
3. stent conveying device as described in claim 1, which is characterized in that the bracket loads compressed outer diameter and is
1.75-1.9mm。
4. stent conveying device as described in claim 1, which is characterized in that the braiding head number of the bracket is 4-8 head.
5. stent conveying device as described in claim 1, which is characterized in that the angle of weave of the bracket is 115-125 °.
6. stent conveying device as described in claim 1, which is characterized in that the bracket loads compressed outer diameter and is
1.75-1.9mm。
7. conveying device as described in claim 1, which is characterized in that the outer diameter of the bracket constraint pipe (3) is 2.0-
2.33mm。
8. conveying device as described in claim 1, which is characterized in that the internal diameter of the bracket constraint pipe is 1.6-
2.13mm。
9. conveying device as described in claim 1, the driving device connector and bracket constraint pipe fitting are along hard
Slide bar is moved toward one another.
10. conveying device as described in claim 1, what the transmission device formed with the gear and the rack gear was used cooperatively
Stent pushing tube drive device is driven using gun-type handle, and the gun-type handle and the gear and the rack gear form
One separate-type handle；
Bracket constraint pipe is coupled by buckle with the rigid connection part of the gun-type handle, the rigid connection part to
When distal end is mobile, the bracket is driven to fetter pipe mobile to distal end；And the stent pushing pipe equally passes through the buckle and institute
The rigid connection part for stating gun-type handle is coupled, and when the rigid connection part moves to the near end, drives the stent pushing pipe
Move to the near end, and the rigid connection part is moved toward one another by the realization of gun-type handle, thus drive bracket constraint pipe and
Stent pushing pipe (2) holding moves toward one another.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811488344.6A CN109602522B (en) | 2017-12-07 | 2017-12-07 | Self-expanding braided stent and conveying device thereof |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811488344.6A CN109602522B (en) | 2017-12-07 | 2017-12-07 | Self-expanding braided stent and conveying device thereof |
| CN201711285758.4A CN107837135B (en) | 2017-12-07 | 2017-12-07 | Self-expansion type braided support and its conveying device |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711285758.4A Division CN107837135B (en) | 2017-12-07 | 2017-12-07 | Self-expansion type braided support and its conveying device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109602522A true CN109602522A (en) | 2019-04-12 |
| CN109602522B CN109602522B (en) | 2019-12-27 |
Family
ID=61664639
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811488344.6A Active CN109602522B (en) | 2017-12-07 | 2017-12-07 | Self-expanding braided stent and conveying device thereof |
| CN201711285758.4A Active CN107837135B (en) | 2017-12-07 | 2017-12-07 | Self-expansion type braided support and its conveying device |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711285758.4A Active CN107837135B (en) | 2017-12-07 | 2017-12-07 | Self-expansion type braided support and its conveying device |
Country Status (2)
| Country | Link |
|---|---|
| CN (2) | CN109602522B (en) |
| WO (1) | WO2019109981A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113827386A (en) * | 2021-11-29 | 2021-12-24 | 艾柯医疗器械(北京)有限公司 | Self-expanding type stent leading-in device |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109602522B (en) * | 2017-12-07 | 2019-12-27 | 苏州恒瑞宏远医疗科技有限公司 | Self-expanding braided stent and conveying device thereof |
| CN112789009A (en) * | 2018-10-05 | 2021-05-11 | W.L.戈尔及同仁股份有限公司 | Restraint mechanism for selective deployment and associated method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998023241A2 (en) * | 1996-11-27 | 1998-06-04 | Scimed Life Systems, Inc. | Pull back stent delivery system with pistol grip retraction handle |
| US20030191516A1 (en) * | 2002-04-04 | 2003-10-09 | James Weldon | Delivery system and method for deployment of foreshortening endoluminal devices |
| US20090030496A1 (en) * | 2006-01-25 | 2009-01-29 | Ralf Kaufmann | Insertion system for stents, comprising tension-compression kinematics |
| CN102283728A (en) * | 2011-06-28 | 2011-12-21 | 先健科技(深圳)有限公司 | Lumen bracket conveying system |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITTO20030037A1 (en) * | 2003-01-24 | 2004-07-25 | Sorin Biomedica Cardio S P A Ora S Orin Biomedica | CATHETER DRIVE DEVICE. |
| US9039750B2 (en) * | 2010-12-16 | 2015-05-26 | Cook Medical Technologies Llc | Handle control system for a stent delivery system |
| CN105873547B (en) * | 2013-11-08 | 2019-05-03 | 波士顿科学国际有限公司 | Intracavitary unit |
| CN106456349B (en) * | 2014-03-24 | 2018-07-06 | 波士顿科学国际有限公司 | Self-expanding stent transport system |
| CN206102784U (en) * | 2016-08-15 | 2017-04-19 | 苏州天鸿盛捷医疗器械有限公司 | Support conveyer |
| CN109602522B (en) * | 2017-12-07 | 2019-12-27 | 苏州恒瑞宏远医疗科技有限公司 | Self-expanding braided stent and conveying device thereof |
-
2017
- 2017-12-07 CN CN201811488344.6A patent/CN109602522B/en active Active
- 2017-12-07 CN CN201711285758.4A patent/CN107837135B/en active Active
-
2018
- 2018-12-06 WO PCT/CN2018/119590 patent/WO2019109981A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998023241A2 (en) * | 1996-11-27 | 1998-06-04 | Scimed Life Systems, Inc. | Pull back stent delivery system with pistol grip retraction handle |
| US20030191516A1 (en) * | 2002-04-04 | 2003-10-09 | James Weldon | Delivery system and method for deployment of foreshortening endoluminal devices |
| US20090030496A1 (en) * | 2006-01-25 | 2009-01-29 | Ralf Kaufmann | Insertion system for stents, comprising tension-compression kinematics |
| CN102283728A (en) * | 2011-06-28 | 2011-12-21 | 先健科技(深圳)有限公司 | Lumen bracket conveying system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113827386A (en) * | 2021-11-29 | 2021-12-24 | 艾柯医疗器械(北京)有限公司 | Self-expanding type stent leading-in device |
| CN113827386B (en) * | 2021-11-29 | 2022-03-29 | 艾柯医疗器械(北京)有限公司 | Self-expanding type stent leading-in device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107837135A (en) | 2018-03-27 |
| CN107837135B (en) | 2019-12-03 |
| CN109602522B (en) | 2019-12-27 |
| WO2019109981A1 (en) | 2019-06-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10675162B2 (en) | Post-implantation contractible or expandable devices and method of using and making the same | |
| EP1621160B1 (en) | Low deployment force delivery device | |
| JP2021154134A (en) | Stent member | |
| US10271974B2 (en) | Helical stent | |
| JP4825665B2 (en) | Lumen device with enhanced mounting characteristics | |
| US5591230A (en) | Radially expandable stent | |
| US8621975B2 (en) | Device and method for treating vascular abnormalities | |
| US8663309B2 (en) | Asymmetric stent apparatus and method | |
| WO2018156840A1 (en) | Constrainable stent graft, delivery system and methods of use | |
| GB2470083A (en) | Closed loop stent | |
| US20090082845A1 (en) | Alignment stent apparatus and method | |
| MX2007012827A (en) | Intravascular deliverable stent for reinforcement of vascular abnormalities. | |
| US20120035701A1 (en) | Stent strut appositioner | |
| JP2001526575A (en) | Self-expanding endoprostheses | |
| CN107837135B (en) | Self-expansion type braided support and its conveying device | |
| JP2008029839A (en) | Twisted anchoring barb for stent of abdominal aortic aneurysm (aaa) device | |
| CN101299977B (en) | Stent for temporary fitting in a body cavity | |
| CN108245293B (en) | Long-specification vascular stent conveying system | |
| WO2001066037A2 (en) | Intraluminal prosthesis | |
| CN217430270U (en) | Conveying device | |
| CN208905717U (en) | Self-expansion type braided support and its conveying device | |
| CN208492413U (en) | A kind of long size intravascular stent transportation system | |
| JP3878971B2 (en) | Temporary indwelling stent graft | |
| CN115279304A (en) | Device and system for improving stent performance | |
| CN216365444U (en) | A mounting system for passing through intrahepatic portosystemic reposition of redundant personnel of neck |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |