CN107789094A - Exempt to suture stent-graft, superlastic braiding retainer ring - Google Patents
Exempt to suture stent-graft, superlastic braiding retainer ring Download PDFInfo
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- CN107789094A CN107789094A CN201711177857.0A CN201711177857A CN107789094A CN 107789094 A CN107789094 A CN 107789094A CN 201711177857 A CN201711177857 A CN 201711177857A CN 107789094 A CN107789094 A CN 107789094A
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- CN
- China
- Prior art keywords
- blood vessel
- superlastic
- braiding
- retainer ring
- artificial blood
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Classifications
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- 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
- A61F2/02—Prostheses implantable into the body
- A61F2/04—Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts
- A61F2/06—Blood vessels
-
- 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
- A61F2/02—Prostheses implantable into the body
- A61F2/04—Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts
- A61F2/06—Blood vessels
- A61F2/064—Blood vessels with special features to facilitate anastomotic coupling
-
- 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
- A61F2210/00—Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2210/0014—Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof using shape memory or superelastic materials, e.g. nitinol
-
- 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
- A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2220/0025—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2220/0033—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementary-shaped recess, e.g. held by friction fit
Abstract
The present invention disclose one kind and exempts to suture stent-graft, superlastic braiding retainer ring, is related to technical field of medical instruments, with solve the problems, such as existing artificial blood vessel's anastomosis difficult, overlong time of coincideing and caused by leakage blood and complication.It is of the present invention to exempt to suture stent-graft, including：By be sequentially connected make line portion artificial blood vessel and non-makes artificial blood vessel's body that line portion artificial blood vessel forms, and non-make is sewed with compressible elastic metal rack on line portion artificial blood vessel；Make to carry on line portion artificial blood vessel and exempt to suture connecting portion, exempt to suture connecting portion by the soft annular pocket that is coaxially seamlessly connected on the outside for making line portion artificial blood vessel and with making line portion artificial blood vessel, and the superlastic braiding retainer ring for being positioned over soft annular pocket and making between line portion artificial blood vessel is formed, and highly constrained device is provided with along elastic direction in superlastic braiding retainer ring；Superlastic braiding retainer ring is network up and down staggeredly, and is formed by the braiding of hyperelastic nitinol alloy wire.
Description
Technical field
The present invention relates to technical field of medical instruments, more particularly to one kind is exempted to suture stent-graft, superlastic braiding admittedly
Determine ring.
Background technology
Dissection of aorta is the arotic disease that a kind of state of an illness is dangerous, progress is rapid, the death rate is high, and the incidence of disease is about
0.3%, undressed Infant Mortality is incremented by 1% per hour, and more than 50% patient is in dead in 1 week.Dissection of aorta
Onset is rapid, and rear extreme difference, i.e., the patient of enabled survival also may proceed to develop into the chronic sustainer with various clinical symptoms
Interlayer.Lacuna of Aortic Dissection position is the central factor for determining modus operandi, and it is Type B interlayer that cut, which is located at descending aorta, main
Recovery technique in lumen of artery has substituted most of traditional because wound is small, success rate is high, therapeutic effect is good, post-operative recovery is fast
Open chest and abdomen operation and progressively turn into the new treatment standard for the treatment of dissection of aorta.Have to retain mainly for adjoining or involving
The lesion of branch vessel, such as involve the A type interlayers of aorta ascendens and the arch of aorta, conventional method still passes through surgery hand at present
The method of art replaces lesion artery using artificial blood vessel.
Nineteen eighty-three Borst proposes leading aorta ascendens and Aortic arch replacement first, and is built into one section in descending aorta
Free artificial blood vessel, it can be completed with remote operation in left subclavian artery when the second stage of descending thoracic aorta is performed the operation and no longer needed
Deep Hypothermia Circulatory Arrest, this technology is referred to as trunk and performed the operation by him.The it is proposed such as crawford and svensson improvement at the beginning of the nineties
Trunk surgical technic, be not only easier artificial Vascular implantation, hemorrhage complication is few, and further increase implantable artificial blood vessel with
The contact area of aorta wall, the operative mortality rate of dissection of aorta is set to be reduced to 5%.Start within 2003, Sun Lizhong etc. is with four
Branch's artificial blood vessel's row aorta bow displacement plus support trunk operative treatment StanfordA type dissection of aorta, are obtained very well
Clinical effectiveness, and as StanfordA type dissection of aorta surgical interventions classical art formula.
The flow of conventional Aortic arch replacement and support trunk operation is to place intrusion pipe in axillary artery at present, through atrium dextrum
Place superior and inferior vena cave drainage tube and establish cardiopulmonary bypass；Cool as less than 32 DEG C, clamping of aorta, after cutting aorta ascendens
Through left and right coronary ostium perfused hearts cardioplegic solution, cardiac arrest；Continue to cool, at the same row aorta ascendens displacement or
Bentall arts or David arts；Nasopharyngeal temperature is down to 18 DEG C, stops circulating, and blocks innominate artery, left common carotid artery and left lock successively
Artery under bone, axillary artery row selective cerebral perfusion；Cut the arch of aorta, the transection master between left common carotid artery and innominate artery
Artery；Overlay film frame is discharged in descending aorta；It is near with Four branches aortic graft distal end, overlay film frame near-end and descending aorta
Hold row end to end anastomosis；It coincide after terminating, arterial perfusion pipe is connected with the perfusion branch of Four branches aortic graft, blocks artificial blood
Pipe irrigates the proximal part of branch, recovers lower part of the body perfusion；Four branches aortic graft and left subclavian artery, left neck are always moved successively
Arteries and veins, innominate artery row end to end anastomosis, coincide left common carotid artery after opened, recover brain perfusion, start simultaneously at rewarming.Again by four
Branch's artificial blood vessel's proximal part coincide with aorta ascendens；Open aorta ascendens, spontaneous rebeating or electric shock rebeating；Routinely after
Continuous rewarming, auxiliary circulation, shutdown, hemostasis and pass chest.
Replacement of aorta operation is one of most challenging problem of cardiothoracic surgery, and it is big, dead to be mainly reflected in operating difficulty
Die rate height and incidence of complications is high.The operative mortality rate of Debakey report one's early years dissecting aneurysms is once up to 40%,
Mainly with vascular anastomosis technology is not high causes bleeding relevant, with the raising of operation skill, extracorporal circulatory system and cerebral perfusion method
Improve, though operation general mortality rate has decline at present, but still in 5-15% or so, serious patient's especially aortic arch surgery
Or oneself has severe complication person is even up to 50-70%.Operation need to circulate lower progress in vitro, involve aortic arch or drop
Sustainer must also use deep hypothermic circulatory arrest, i.e., by hypothermia to 15 DEG C or so, stop systemic blood circulation,
Vascular anastomosis is completed under bloodless environment.
Present inventor has found that problems of the prior art include：Operation field exposing is difficult, and aortic blood
Lesion different degrees of Guan Douyou, dissecting hemorrhage, tube wall crisp fritter, previous anastomotic oozing of blood, leakage blood are always Great Vessel Operations the latter
Make us quite feeling stubborn problem；The more identical time length of previous anastomotic, operation need to carry out under extracorporal circulatory system state, carry out descending aorta
Need to stop recurrent state in anastomosis procedures, the identical time directly affects cardiopulmonary bypass time and stopped circulation time and temperature, body
Outer circulation and Deep Hypothermia Circulatory Arrest are non-physiological state, and especially Deep Hypothermia Circulatory Arrest more has certain safe time limit.
The content of the invention
Exempt to suture stent-graft, superlastic braiding retainer ring it is an object of the invention to provide one kind, it is existing to solve
Artificial blood vessel's anastomosis difficult in technology, overlong time of coincideing and caused by leak the technical problem of blood and complication.
The present invention provides one kind and exempts to suture stent-graft, including：Artificial blood vessel's body, artificial blood vessel's body by
Be sequentially connected make line portion artificial blood vessel and non-makes line portion artificial blood vessel composition, and non-make is sewed with line portion artificial blood vessel
Compressible elastic metal rack；It is described make on line portion artificial blood vessel with exempt from suture connecting portion, it is described exempt from suture connecting portion by
On the outside for making line portion artificial blood vessel and with the soft annular pocket made line portion artificial blood vessel and be coaxially seamlessly connected,
And the soft annular pocket and the superlastic braiding retainer ring composition made between line portion artificial blood vessel are positioned over, and it is described super
In bullet braiding retainer ring highly constrained device is provided with along elastic direction；The superlastic braiding retainer ring is grid knot up and down staggeredly
Structure, and formed by the braiding of hyperelastic nitinol alloy wire.
During practical application, positioned at the outside for exempting to suture connecting portion, correspond to the elastic metal rack and close on described
Compression Membrane cover is provided with superlastic braiding retainer ring.
Wherein, the diameter of the superlastic braiding retainer ring makes the diameter of line portion artificial blood vessel, and the magnitude of interference slightly larger than described in
For 10%-40%.
Specifically, the superlastic braiding retainer ring is formed by the braiding of hyperelastic nitinol alloy wire, and the section of silk material is
Circular, a diameter of 0.30mm-0.40mm.
Specifically, the superlastic braiding retainer ring is formed by the braiding of hyperelastic nitinol alloy wire, and the section of silk material is
Rectangle.
Further, the superlastic braiding retainer ring is network up and down staggeredly, and the network is rhombus
Grid, the width and height of the network are respectively 2mm-5mm.
Further, the superlastic braiding retainer ring is formed by the braiding of hyperelastic nitinol alloy wire, and weaves silk material
Radical be 1-4 roots, weaving method is under one on the other or two on two.
During practical application, described non-to make line portion artificial blood vessel be straight barrel type or tapered structure.
Wherein, it is described to make line portion artificial blood vessel and carry branch artificial blood vessel.
Relative to prior art, suture stent-graft of the present invention of exempting from has the advantage that：
It is provided by the invention to exempt to suture in stent-graft, including：Artificial blood vessel's body, artificial blood vessel's body is by successively
Connection make line portion artificial blood vessel and non-makes line portion artificial blood vessel composition, and it is non-make be sewed with line portion artificial blood vessel it is compressible
Elastic metal rack；Make on line portion artificial blood vessel with exempting to suture connecting portion, exempt to suture connecting portion by positioned at making the artificial blood in line portion
The soft annular pocket being coaxially seamlessly connected on the outside of pipe and with making line portion artificial blood vessel, and be positioned over soft annular pocket and make
Superlastic braiding retainer ring between line portion artificial blood vessel is formed, and is provided with superlastic braiding retainer ring along elastic direction highly constrained
Device；Superlastic braiding retainer ring is network up and down staggeredly, and is formed by the braiding of hyperelastic nitinol alloy wire.Thus
Analysis is understood, provided by the invention to exempt to suture in stent-graft, and because artificial blood vessel's near-end makes line, line is not made in distal end, and
Line part is not made and is sewed with elastic metal rack, is not made the stent-graft of line and is made the artificial blood vessel's integrated design of line portion,
Stent-graft is coincide with making the artificial blood vessel of line in operative site again without doctor, so as to effectively simplify behaviour
Make step, therefore greatly reduce the probability of descending aorta anastomotic leakage blood.
In addition, provided by the invention exempt to suture in stent-graft, artificial blood vessel's near-end makes line, and line is not made in distal end, no
Make line part and be sewed with compressible elastic metal rack, integrated design, can effectively reduce descending aorta anastomotic leakage blood
Probability.The outside that artificial blood vessel makes line part is provided with and does not leak the soft annular pocket of blood, can be used for by mechanical lock with
The broken ends of fractured bone of descending aorta autologous vein is brought into close contact connection, anti-leak-stopping blood；Previous anastomotic is located at the outside of artificial blood vessel, will not be direct
Impacted by active artery blood flow and pressure difference, the area of mechanical caging is much larger than continuously identical area in addition, blood vessel by
Pressure it is more average, vascular tear leakage blood probability substantially reduce mechanical lock improve coincide speed, shorten sustainer resistance
Break and stop circulation time, can effectively reduce the incidence and the death rate of central nervous system complication, reduce operating difficulty, behaviour
Work simply is easy to grasp, and beneficial to the development of operation, more patients are benefited, and effectively reduces Anastomotic bleeding related complication hair
Raw rate.
The present invention also provides a kind of superlastic braiding retainer ring, is provided with highly along elastic direction in the superlastic braiding retainer ring
Restraint device；The superlastic braiding retainer ring is network up and down staggeredly, and the network is network；It is described
Superlastic weaves retainer ring and formed by the braiding of hyperelastic nitinol alloy wire, and the section of silk material is circular or rectangle.
Relative to prior art, superlastic braiding retainer ring of the present invention has the advantage that：
In superlastic braiding retainer ring provided by the invention, it is provided with superlastic braiding retainer ring along elastic direction highly constrained
Device；Superlastic braiding retainer ring is network up and down staggeredly, and network is network；Also, superlastic braiding is solid
Determine ring to be formed by the braiding of hyperelastic nitinol alloy wire, and the section of silk material is circular or rectangle.Thus analysis is understood：
1st, superlastic weaves retainer ring in, diameter nonadjustable retainer ring advantageous with matching for blood vessel diameter, it is desirable to
The sealing effectiveness obtained is, it is necessary to which blood vessel diameter and the diameter of retainer ring will have certain matching relationship, retainer ring size selection
It is excessive can not smooth delivery of power into blood vessel, gap be present, it is necessary in vessel outer wall with blood vessel in the small retainer ring of size selection
Applying bigger power allows blood vessel integral diameter to shrink, and blood vessel is bonded with retainer ring；
2nd, the fixed ring diameter adjustable extent of superlastic braiding is very big, can be compressed to less diameter during conveying, discharge
Size that afterwards can be actively with blood vessel is wanted to adapt to, good with the compliance of blood vessel, directly fits on blood vessel, no
Easy output gap, good airproof performance；
3rd, uniform, densification has been used compared with other compressible designs and network staggeredly, stress is equal up and down
It is even, it is not likely to produce fatigue fracture under the blood pressure pulsed in human body；
4th, when mechanical lock locks, grid staggeredly can compress within the specific limits, without weak link, cause
The collapse of some position and gap, not leakiness blood；
5th, use hyperelastic nitinol alloy wire braiding to form, constant support can be provided in the range of certain diameter
Power, the support force can be by the diameters of silk material, and the radical of the density of braiding, angle and silk material is adjusted, and is not in
Angionecrosis excessively caused by pressing；
6th, can be with lock height restraint device, by controlling superlastic to weave the height of retainer ring, to control after the completion of discharging
Superlastic weaves the diameter of retainer ring, and avoiding the locking piece excessively locking of vessel outer wall causes the diameter mistake of superlastic braiding retainer ring
Degree shrinks.
Brief description of the drawings
, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical scheme of the prior art
The required accompanying drawing used is briefly described in embodiment or description of the prior art, it should be apparent that, in describing below
Accompanying drawing is some embodiments of the present invention, for those of ordinary skill in the art, before creative work is not paid
Put, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation provided in an embodiment of the present invention for exempting to suture stent-graft；
Fig. 2 is the structural representation provided in an embodiment of the present invention for exempting to suture stent-graft band compression Membrane cover；
Fig. 3 is the dimensional structure diagram that superlastic provided in an embodiment of the present invention weaves retainer ring；
Fig. 4 is the planar structure schematic diagram that superlastic provided in an embodiment of the present invention weaves retainer ring；
Fig. 5 (a)-(c) is the braiding structure enlarged diagram that superlastic provided in an embodiment of the present invention weaves retainer ring.
In figure：1- artificial blood vessel's bodies；11- makes line portion artificial blood vessel；12- is non-to make line portion artificial blood vessel；2- elasticity
Metallic support；The soft annular pockets of 3-；4- superlastic weaves retainer ring；5- compresses Membrane cover；The highly constrained devices of 6-；7- coincide
Edge.
Embodiment
Technical scheme is clearly and completely described below in conjunction with accompanying drawing, it is clear that described implementation
Example is part of the embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill
The every other embodiment that personnel are obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
In the description of the invention, it is necessary to explanation, term " " center ", " on ", " under ", "left", "right", " vertical ",
The orientation or position relationship of the instruction such as " level ", " interior ", " outer " be based on orientation shown in the drawings or position relationship, merely to
Be easy to the description present invention and simplify description, rather than instruction or imply signified device or element must have specific orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.In addition, term " first ", " second ",
" the 3rd " is only used for describing purpose, and it is not intended that instruction or hint relative importance.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, can be with
It is the connection of two element internals.For the ordinary skill in the art, it can understand that above-mentioned term exists with concrete condition
Concrete meaning in the present invention.
Fig. 1 is the structural representation provided in an embodiment of the present invention for exempting to suture stent-graft.
Exempt to suture stent-graft as shown in figure 1, the embodiment of the present invention provides one kind, including：Artificial blood vessel's body 1,
Artificial blood vessel's body 1 by be sequentially connected make line portion artificial blood vessel 11 and it is non-make line portion artificial blood vessel 12 and form, and non-make line portion
Compressible elastic metal rack 2 is sewed with artificial blood vessel 12；Make on line portion artificial blood vessel 11 with suture connecting portion is exempted from, exempt from
Suture connecting portion by the outside for making line portion artificial blood vessel 11 and with make line portion artificial blood vessel 11 be coaxially seamlessly connected it is soft
Matter annular pocket 3, and the superlastic braiding retainer ring 4 for being positioned over soft annular pocket 3 and making between line portion artificial blood vessel 11 are formed, and
In superlastic braiding retainer ring 4 highly constrained device 6 is provided with along elastic direction；Superlastic braiding retainer ring 4 is grid up and down staggeredly
Structure, and formed by the braiding of hyperelastic nitinol alloy wire.
Relative to prior art, the stent-graft of exempting to suture described in the embodiment of the present invention has the advantage that：
It is provided in an embodiment of the present invention to exempt to suture in stent-graft, as shown in figure 1, including：Artificial blood vessel's body 1,
Artificial blood vessel's body 1 by be sequentially connected make line portion artificial blood vessel 11 and it is non-make line portion artificial blood vessel 12 and form, and non-make line portion
Compressible elastic metal rack 2 is sewed with artificial blood vessel 12；Make on line portion artificial blood vessel 11 with suture connecting portion is exempted from, exempt from
Suture connecting portion by the outside for making line portion artificial blood vessel 11 and with make line portion artificial blood vessel 11 be coaxially seamlessly connected it is soft
Matter annular pocket 3, and the superlastic braiding retainer ring 4 for being positioned over soft annular pocket 3 and making between line portion artificial blood vessel 11 are formed, and
In superlastic braiding retainer ring 4 highly constrained device 6 is provided with along elastic direction；Superlastic braiding retainer ring 4 is net up and down staggeredly
Lattice structure, and formed by the braiding of hyperelastic nitinol alloy wire.Thus analysis is understood, provided in an embodiment of the present invention to exempt from suture branch
In frame artificial blood vessel, because artificial blood vessel's near-end makes line, line is not made in distal end, and does not make line part and be sewed with elastic metal rack 2,
The stent-graft of line is not made and makes the integrated design of line portion artificial blood vessel 11, without doctor again by stent-graft with making
The artificial blood vessel of line is coincide in operative site, so as to effectively simplify operating procedure, therefore greatly reduces drop actively
The probability of arteries and veins anastomotic leakage blood.
It should be added that, provided in an embodiment of the present invention to exempt to suture in stent-graft, superlastic weaves herein
The characteristics of retainer ring 4 be compression after diameter attenuate, length, therefore the length of soft annular pocket 3 than superlastic weave retainer ring 4
Length it is slightly longer.
Also, as shown in figure 1, above-mentioned highly constrained device 6 can be silk thread, after passing through soft annular pocket 3 by silk thread
The end Network of superlastic braiding retainer ring 4 is then passed through, after the completion of to be released, doctor knots silk thread both ends, so as to surpass
The end and the centre position of soft annular pocket 3 of bullet braiding retainer ring 4 are fixed together, and then the height of superlastic braiding retainer ring 4
Degree is locked, can avoid excess compression well.Such as the highly constrained device 6 of conductive structure weaves retainer ring 4 in superlastic
Circumferencial direction can be distributed with as needed it is multiple., can also be directly through superlastic when above-mentioned highly constrained device 6 is silk thread
The far and near end of retainer ring 4 is woven, is fixed by knotting or other rational methods.
In addition, provided in an embodiment of the present invention exempt to suture in stent-graft, artificial blood vessel's near-end makes line, and distal end is not made
Line, line part is not made and is sewed with compressible elastic metal rack 2, integrated design, descending aorta can be effectively reduced and coincide
The probability of mouth leakage blood.The outside that artificial blood vessel makes line part is provided with the soft annular pocket 3 for not leaking blood, can pass through mechanical lock
It is connected for being brought into close contact with the broken ends of fractured bone of descending aorta autologous vein, anti-leak-stopping blood；Previous anastomotic is located at the outside of artificial blood vessel, no
Directly it can be impacted by active artery blood flow and pressure difference, the area of mechanical caging is much larger than continuously identical area, blood in addition
The pressure that pipe is subject to is more average, and the probability of vascular tear leakage blood substantially reduces mechanical lock and improves speed of coincideing, and shortens master
Artery occlusion and stop circulation time, can effectively reduce the incidence and the death rate of central nervous system complication, reduce operation
Difficulty, simple to operate to be easy to grasp, beneficial to the development of operation, more patients are benefited, and it is related effectively to reduce Anastomotic bleeding
Complication rate.
Fig. 2 is the structural representation provided in an embodiment of the present invention for exempting to suture stent-graft band compression Membrane cover.
During practical application, as shown in Fig. 2 positioned at the outside for exempting from suture connecting portion, correspond to elastic metal rack 2 and close on super
Compression Membrane cover 5 can be provided with bullet braiding retainer ring 4；Specifically, positioned at the non-outside for making line portion artificial blood vessel 12, and correspondingly
Fan-shaped compression Membrane cover or straight type compression Membrane cover can be provided with elastic metal rack 2.Superlastic braiding retainer ring 4 has been packaged
Into soft annular pocket 3, and soft annular pocket 3 with it is non-to make line portion artificial blood vessel 12 be integral, and be additionally arranged compressive films
Set 5；Wherein, compress after elastic metal rack 2 and superlastic can be woven the diameter of retainer ring 4 by Membrane cover 5 and be sent into autologous blood
Guan Zhong, and endangium is not damaged.In addition, the center line of compression Membrane cover 5 is connected with stent-graft, the two of Membrane cover
The edge of side is provided with hole slot, and the hole slot at Membrane cover edge can be alternately passed through so as to discharge silk, and for tie bracket well.
Fig. 3 is the dimensional structure diagram that superlastic provided in an embodiment of the present invention weaves retainer ring；Fig. 4 is implemented for the present invention
The planar structure schematic diagram for the superlastic braiding retainer ring that example provides；Fig. 5 (a)-(c) compiles for superlastic provided in an embodiment of the present invention
Knit the braiding structure enlarged diagram of retainer ring.
Wherein, as shown in Figure 3 and Figure 4, the diameter of above-mentioned superlastic braiding retainer ring 4, which is slightly larger than, makes line portion artificial blood vessel's 11
Diameter, and the magnitude of interference can be 10%-40%；Specifically, above-mentioned superlastic braiding retainer ring 4 can be closed by hyperelastic NiTi
Spun gold braiding forms, and the section of silk material can be circular or rectangle, and diameter can be 0.30mm- when section is circle
0.40mm；Further, above-mentioned superlastic braiding retainer ring 4 can be network up and down staggeredly, and the network can be with
For network, the width and height of network can be respectively 2mm-5mm；Further, above-mentioned superlastic braiding is fixed
Ring 4 can be woven by hyperelastic nitinol alloy wire and be formed, and the radical for weaving silk material can be 1-4 roots, specific weaving method
Can be one on the other or two on two under, as shown in Fig. 5 (a)-(c).In addition, weaving method can also be continuous weaving, to end
Further around returning during end.
It is provided in an embodiment of the present invention to exempt to suture superlastic braiding retainer ring 4 in stent-graft, closed by the NiTi of superlastic
The braiding of spun gold material forms, and can compress the external diameter of retainer ring by conveyer, makes course of conveying simpler, is not in because existing
Situation in place can not be conveyed caused by some fixation ring diameters are big, vessel diameter is small；It can pass through conveying after conveying in place
Device discharges superlastic braiding retainer ring 4, and superlastic braiding retainer ring 4 can be expanded automatically, be bonded with the inwall of blood vessel, be not in
It is not easy to convey by retainer ring size selection is excessive, it is undersized the situation in gap occur with blood vessel；Can be in diameter
Automatic rebounding is simpler to original diameter, implantation process afterwards；Superlastic weaves the grid that retainer ring 4 is woven into densification by silk material,
It is good with the sticking nature of blood vessel, it is not likely to produce and collapses in band compression process, is not easy bleeding；Superlastic weaves retainer ring 4 by superlastic
Nitinol silk material be made, in blood vessel pumping processes, there is higher anti-extrusion ability and relatively low support force, anti-leak-stopping
The damage to blood vessel can be reduced while blood；By mechanical lock superlastic can be avoided to weave the diameter excessive pressure of retainer ring 4
Contracting；The gap of grid can play a part of anti-skidding and avoid angionecrosis；The edge 7 that coincide can provide displacement and mending-leakage effect,
Double layer security is provided to ensure.
During practical application, it is sent into will preferably exempt to suture stent-graft in autologous vein, the embodiment of the present invention
What is provided exempts to suture in stent-graft, and above-mentioned non-to make line portion artificial blood vessel 12 can be straight barrel type or tapered structure；Also,
It is above-mentioned to make line portion artificial blood vessel 11 and carry branch artificial blood vessel.
The embodiment of the present invention also provides a kind of superlastic braiding retainer ring, is set in superlastic braiding retainer ring 4 along elastic direction
There is highly constrained device 6；Superlastic braiding retainer ring 4 is network up and down staggeredly, and network is network；Superlastic
Braiding retainer ring 4 is formed by the braiding of hyperelastic nitinol alloy wire, and the section of silk material is circular or rectangle.
Relative to prior art, the superlastic braiding retainer ring described in the embodiment of the present invention has the advantage that：
1st, superlastic weaves retainer ring in, diameter nonadjustable retainer ring advantageous with matching for blood vessel diameter, it is desirable to
The sealing effectiveness obtained is, it is necessary to which blood vessel diameter and the diameter of retainer ring will have certain matching relationship, retainer ring size selection
It is excessive can not smooth delivery of power into blood vessel, gap be present, it is necessary in vessel outer wall with blood vessel in the small retainer ring of size selection
Applying bigger power allows blood vessel integral diameter to shrink, and blood vessel is bonded with retainer ring；
2nd, the fixed ring diameter adjustable extent of superlastic braiding is very big, can be compressed to less diameter during conveying, discharge
Size that afterwards can be actively with blood vessel is wanted to adapt to, good with the compliance of blood vessel, directly fits on blood vessel, no
Easy output gap, good airproof performance；
3rd, uniform, densification has been used compared with other compressible designs and network staggeredly, stress is equal up and down
It is even, it is not likely to produce fatigue fracture under the blood pressure pulsed in human body；
4th, when mechanical lock locks, grid staggeredly can compress within the specific limits, without weak link, cause
The collapse of some position and gap, not leakiness blood；
5th, use hyperelastic nitinol alloy wire braiding to form, constant support can be provided in the range of certain diameter
Power, the support force can be by the diameters of silk material, and the radical of the density of braiding, angle and silk material is adjusted, and is not in
Angionecrosis excessively caused by pressing；
6th, can be with lock height restraint device, by controlling superlastic to weave the height of retainer ring, to control after the completion of discharging
Superlastic weaves the diameter of retainer ring, and avoiding the locking piece excessively locking of vessel outer wall causes the diameter mistake of superlastic braiding retainer ring
Degree shrinks.
It should be added that, prior art descending aorta distal anastomosis mouth needs the 20-30 pins that coincide, surgery herein
Doctor needs to use needle holder to be operated in narrow space, is required for penetrating autologous vein, artificial blood vessel and overlay film branch per pin
The overlay film of frame, even with the most time saving mode continuously coincideing, most skilled doctor is also required to 20 minutes.The blood of lesion
Pipe is very fragile, and identical spacing and strength control are bad, and the blood of sustainer directly impacts previous anastomotic, it is most likely that causes
Previous anastomotic tears bleeding, once bleeding needs to take longer time to be repaired, descending aorta anastomosis procedures are to be in whole body
Stop the state of circulation, although there is brain perfusion on head, the overlong time that lower limb stop circulating still has the complication of internal organ and ischemia of spinal cord
Occur, doctor also needs that the body temperature of patient is dropped into 15 degree or so by extracorporal circulatory system in advance, only cools with the time of rewarming extremely
3 hours are needed less.
Exempt to suture stent-graft, superlastic braiding retainer ring using provided in an embodiment of the present invention, it is not necessary to Yi Shengyou
The learning curve of some time can just be grasped, and the descending aorta previous anastomotic identical time can be reduced to 5 minutes, and the body temperature of patient is only
Need to be reduced to 20-25 degree, cooling and the time of rewarming can be reduced to 1.5 hours.Previous anastomotic is located at the outer of artificial blood vessel
Side, directly it will not be impacted by active artery blood flow and pressure difference, the area of mechanical lock is much larger than what is continuously coincide in addition
Area, the pressure that blood vessel is subject to is more average, and the probability of vascular tear leakage blood substantially reduces.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
God any modification, equivalent substitution and improvements made etc., should be included in the scope of the protection with principle.
Claims (10)
1. one kind is exempted to suture stent-graft, it is characterised in that including：Artificial blood vessel's body, artificial blood vessel's body by
Be sequentially connected make line portion artificial blood vessel and non-makes line portion artificial blood vessel composition, and non-make is sewed with line portion artificial blood vessel
Compressible elastic metal rack；
It is described to make on line portion artificial blood vessel with exempting to suture connecting portion, it is described to exempt to suture connecting portion to make line portion artificial by positioned at described
On the outside of blood vessel and with the soft annular pocket made line portion artificial blood vessel and be coaxially seamlessly connected, and be positioned over described soft
Annular pocket and the superlastic braiding retainer ring made between line portion artificial blood vessel are formed, and along bullet in superlastic braiding retainer ring
Property direction is provided with highly constrained device；
The superlastic braiding retainer ring is network up and down staggeredly, and is formed by the braiding of hyperelastic nitinol alloy wire.
2. according to claim 1 exempt to suture stent-graft, it is characterised in that exempts to suture connecting portion positioned at described
Outside, the corresponding elastic metal rack and closes at the superlastic braiding retainer ring and is provided with compression Membrane cover.
3. according to claim 1 or 2 exempt to suture stent-graft, it is characterised in that the superlastic weaves retainer ring
Diameter slightly larger than the diameter for making line portion artificial blood vessel, and the magnitude of interference is 10%-40%.
4. according to claim 1 or 2 exempt to suture stent-graft, it is characterised in that the superlastic weaves retainer ring
Formed by the braiding of hyperelastic nitinol alloy wire, and the section of silk material is circle.
5. according to claim 1 or 2 exempt to suture stent-graft, it is characterised in that the superlastic weaves retainer ring
Formed by the braiding of hyperelastic nitinol alloy wire, and the rectangular cross-section of silk material.
6. according to claim 1 or 2 exempt to suture stent-graft, it is characterised in that the superlastic weaves retainer ring
For network up and down staggeredly, and the network be network, the width of the network and is highly respectively
2mm-5mm.
7. according to claim 1 or 2 exempt to suture stent-graft, it is characterised in that the superlastic weaves retainer ring
Formed by the braiding of hyperelastic nitinol alloy wire, and the radical for weaving silk material be 1-4 roots, weaving method is one on the other or two
Under upper two.
8. according to claim 1 exempt to suture stent-graft, it is characterised in that described non-to make line portion artificial blood vessel and be
Straight barrel type or tapered structure.
9. exempt from suture stent-graft according to claim 1 or 8, it is characterised in that described to make line portion artificial blood vessel
With branch artificial blood vessel.
10. a kind of superlastic weaves retainer ring, it is characterised in that is provided with height about along elastic direction in the superlastic braiding retainer ring
Bundle device；
The superlastic braiding retainer ring is network up and down staggeredly, and the network is network；
The superlastic braiding retainer ring is formed by the braiding of hyperelastic nitinol alloy wire, and the section of silk material is circular or rectangle.
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| CN201711177857.0A CN107789094B (en) | 2017-11-22 | 2017-11-22 | Artificial blood vessel without sewing stent |
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| CN109223250A (en) * | 2018-10-12 | 2019-01-18 | 大连科万维医疗科技有限公司 | One kind is exempted to suture integral type branch overlay film frame blood vessel |
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| CN116942384A (en) * | 2023-09-19 | 2023-10-27 | 北京华脉泰科医疗器械股份有限公司 | Suture-free multi-branch artificial blood vessel covered stent and conveying device thereof |
| CN117357305A (en) * | 2023-12-08 | 2024-01-09 | 北京华脉泰科医疗器械股份有限公司 | Artificial blood vessel fixing device |
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