WO2021120929A1 - 支架系统及血管支架 - Google Patents

支架系统及血管支架 Download PDF

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Publication number
WO2021120929A1
WO2021120929A1 PCT/CN2020/128206 CN2020128206W WO2021120929A1 WO 2021120929 A1 WO2021120929 A1 WO 2021120929A1 CN 2020128206 W CN2020128206 W CN 2020128206W WO 2021120929 A1 WO2021120929 A1 WO 2021120929A1
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WO
WIPO (PCT)
Prior art keywords
stent
section
blood vessel
tube body
aorta
Prior art date
Application number
PCT/CN2020/128206
Other languages
English (en)
French (fr)
Inventor
李全德
彭宇程
苏成明
Original Assignee
深圳市创心医疗科技有限公司
Priority date (The priority date 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 date listed.)
Filing date
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Application filed by 深圳市创心医疗科技有限公司 filed Critical 深圳市创心医疗科技有限公司
Priority to EP20901915.7A priority Critical patent/EP3988060A4/en
Priority to US17/634,875 priority patent/US20220304836A1/en
Publication of WO2021120929A1 publication Critical patent/WO2021120929A1/zh

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L31/00—Materials for other surgical articles, e.g. stents, stent-grafts, shunts, surgical drapes, guide wires, materials for adhesion prevention, occluding devices, surgical gloves, tissue fixation devices
    • A61L31/02—Inorganic materials
    • A61L31/022—Metals or alloys
    • 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
    • A61F2/02—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
    • A61F2/07—Stent-grafts
    • 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
    • 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
    • A61F2/9517—Instruments specially adapted for placement or removal of stents or stent-grafts handle assemblies therefor
    • 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
    • A61F2/954—Instruments specially adapted for placement or removal of stents or stent-grafts for placing stents or stent-grafts in a bifurcation
    • 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
    • A61F2002/061—Blood vessels provided with means for allowing access to secondary lumens
    • 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
    • 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
    • A61F2210/0076—Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof multilayered, e.g. laminated structures
    • 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
    • A61F2220/0008—Fixation appliances for connecting prostheses to the body
    • 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
    • A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2250/0058—Additional features; Implant or prostheses properties not otherwise provided for
    • A61F2250/006—Additional features; Implant or prostheses properties not otherwise provided for modular

Definitions

  • the invention relates to the technical field of medical devices, in particular to a stent system and a blood vessel stent.
  • the present application provides a blood vessel stent, including a stent body.
  • the stent body includes a plurality of ring-shaped units arranged at intervals and a connecting portion that connects all the ring-shaped units into a tubular structure.
  • the tubular structure includes a first covering with a covering.
  • the stent body also includes a bare section connecting the first membrane-covered section and the second membrane-covered section.
  • the bare section is woven by a preset metal wire, and the bare section is provided with at least A keel line.
  • the vascular stent When the above-mentioned vascular stent is used, the vascular stent is delivered into the aorta.
  • the first covered section is set on the ascending aorta, and the exposed section is set on the arch of the aorta without obstructing the communication between the aorta and the three branches.
  • the membrane segment is set in the descending aorta; since the first and second covered segments can be covered with a membrane, the membrane can be used to seal the ascending or descending aorta or on the ascending and descending aorta
  • the rupture of the vascular stent forms a fixed structure of the vascular stent, that is, the two ends of the vascular stent are reliably fixed.
  • the exposed section is made by a braiding process, which can naturally form multiple meshes (no windowing treatment is required), which will help ensure the safety of the vascular arch, and facilitate the aorta and the three branches of the aortic arch. Connected, easy to fit the intima of the aorta without affecting the branch blood flow, maintaining the original blood flow stability of the aorta, and helping to reduce the risk of damage to the blood vessels in the arch.
  • the design of the keel line increases the integrity of the vascular stent, so that the exposed section has a certain torsion, which is more in line with the anatomical structure of the blood vessel, and is beneficial to improve the reliability of the fixation of the two ends of the vascular stent, making the installation of the vascular stent safe and reliable. It helps to improve the quality of surgery and reduce the risk of surgery.
  • the foregoing analysis shows that the vascular stent of the present application can be applied to the ascending aorta, descending aorta, or ascending aorta and descending aorta for lesion sealing, and has stronger applicability and does not require window treatment.
  • the keel wire is woven around a predetermined metal wire.
  • the keel line is linear, broken or spiral.
  • the material of the preset metal wire is Nitinol.
  • the length of the first film-coated section is 10mm-90mm, and its diameter is 20mm-60mm; or/and the length of the second film-coated section is 10mm-300mm, and its diameter is 10mm-40mm; or/ The length of the exposed section is 40mm ⁇ 200mm, and its diameter is 10mm ⁇ 40mm.
  • the present application also provides a stent system, which includes the blood vessel stent in any of the above embodiments, and further includes a delivery device for delivering the blood vessel stent into the aorta.
  • the stent system uses a delivery device to deliver the corresponding vascular stent into the aorta.
  • the first covered section is set on the ascending aorta, and the exposed section is set on the arch of the aorta, and does not hinder the communication between the aorta and the three branches.
  • the second segment is set in the descending aorta; since the first segment and the second segment can be covered with a film, the film can be used to seal the ascending or descending aorta or the ascending aorta and the descending aorta.
  • the breach in the artery forms a fixing structure of the vascular stent, that is, the two ends of the vascular stent are reliably fixed.
  • the exposed section is made by a braiding process, which can naturally form multiple meshes (no windowing treatment is required), which will help ensure the safety of the vascular arch, and facilitate the aorta and the three branches of the aortic arch. Connected, easy to fit the intima of the aorta without affecting the branch blood flow, maintaining the original blood flow stability of the aorta, and helping to reduce the risk of damage to the blood vessels in the arch.
  • the design of the keel line increases the integrity of the vascular stent, so that the exposed section has a certain torsion, which is more in line with the anatomical structure of the blood vessel, and is beneficial to improve the reliability of the fixation of the two ends of the vascular stent, making the installation of the vascular stent safe and reliable. It helps to improve the quality of surgery and reduce the risk of surgery.
  • the aforementioned analysis shows that the vascular stent of the present application can be applied to the ascending aorta, descending aorta, or ascending aorta and descending aorta for lesion sealing, and has stronger applicability, and does not require fenestration treatment mesh.
  • the delivery device includes a delivery tube and a control mechanism.
  • the delivery tube includes an introduction body provided at the free end of the delivery tube, and a first tube body and a second tube body for storing vascular stents.
  • the first tube The body can be bent relative to the second tube body, and one end of the first tube body is detachably connected to the introduction body, the other end of the first tube body is connected to one end of the second tube body, and the other end of the second tube body is set in the control Mechanically, the control mechanism includes a first control part for releasing the blood vessel stent, a second control part for controlling the bending of the first tube body, and a first force applying part for pushing or withdrawing the delivery tube.
  • the delivery device adopts the first tube body that can be bent and the first control part for controlling the first tube body to bend, when the delivery tube enters the arch of the aorta, the first tube body can bend, so that The vascular stent can smoothly and safely pass through the arch of the larger aorta, and can overcome the difficulty of the existing delivery device to pass the aortic arch or the problem of easy damage to the aortic arch during the delivery of the vascular stent. Surgery risks.
  • the second control portion includes a traction member and a movably disposed second force application portion.
  • One end of the traction member is fixedly connected to the introduction body or/and the first tube body, and the other end is connected to the second force application portion. Fixed connection.
  • the second force applying portion can be rotatably arranged or telescopically arranged.
  • the body is fixedly connected.
  • Fig. 1 is a schematic structural diagram of a blood vessel stent in an embodiment
  • Fig. 2 is a schematic diagram of the structure of the exposed section shown in Fig. 1;
  • Fig. 3 is a schematic diagram of the vascular stent shown in Fig. 1 when it is applied to the treatment of Stanford A aortic dissection disease;
  • FIG. 4 is a schematic diagram of another embodiment when the stent system is applied to the treatment of Stanford A aortic dissection disease
  • Fig. 5 is a schematic structural diagram of the conveying device shown in Fig. 4;
  • FIG. 6 is a schematic structural diagram of a second control part of a partial cross-sectional view of the conveying device shown in an embodiment
  • Fig. 7 is a partial cross-sectional view of the assembly diagram of the traction member and the introduction body of the conveying device shown in an embodiment.
  • an element when an element is referred to as being “fixed to”, “installed on”, “fixed on” or “installed on” another element, it can be directly on the other element or there may also be a centered element. . When an element is considered to be “connected” to another element, it can be directly connected to the other element or an intermediate element may be present at the same time. Further, when one element is regarded as a "fixed transmission connection” another element, the two can be fixed by detachable connection or non-detachable connection, such as socketing, clamping, integral fixing, welding, etc. , which can be realized in the prior art, so it will not be cumbersome here.
  • Stanford type A aortic dissection ((acute aortic dissection type A, referred to as AADA)) is a catastrophic disease that seriously endangers the life and safety of patients. It is characterized by sudden onset, rapid disease progression, and high mortality.
  • a blood vessel stent 100 which includes a stent body 110, which includes a plurality of annular units 112 arranged at intervals, and a tube connecting all the annular units 112 into a tubular structure.
  • the connecting part, the tubular structure includes a first film-coated section 120 and a second film-coated section 130 provided with a film.
  • the stent body 110 also includes an exposed section 140 that is connected to the first film-coated section 120 and the second film-coated section 130.
  • the section 140 is woven by preset metal wires, and the exposed section 140 is provided with at least one keel line 142 passing through both ends thereof.
  • vascular stent 100 when the above-mentioned vascular stent 100 is applied to the treatment of Stanford Type A aortic dissection disease, the vascular stent 100 is delivered into the aorta 300, and the first covered segment 120 is set in the ascending aorta 310 and exposed The segment 140 is set on the arch 320 of the aorta 300 and does not hinder the communication between the aorta 300 and the three arteries 400.
  • the second covered segment 130 is set on the descending aorta 330; because the first covered segment 120 and the second covered segment
  • the membrane segment 130 can be covered with a membrane, which can be used to seal the ascending aorta 310 or the descending aorta 330 or the breach on the ascending aorta 310 and the descending aorta 330, and form a fixed structure of the vascular stent 100, That is, the two ends of the vascular stent 100 are reliably fixed.
  • the exposed section 140 is made by a weaving process, which can naturally form a plurality of meshes 144 (no windowing treatment is required), which will help ensure the safety of the vascular arch
  • the design of the keel line increases the integrity of the vascular stent, so that the exposed section has a certain torsion, which is more in line with the anatomical structure of the blood vessel, and is beneficial to improve the reliability of the fixation of the two ends of the vascular stent 100 Therefore, the vascular stent 100 is installed safely and reliably, which is beneficial to improve the quality of the operation and reduce the risk of the operation.
  • the vascular stent 100 of the present application can be applied to the ascending aorta 310, the descending aorta 330, or the ascending aorta 310 and the descending aorta 330 for the sealing of lesions, and it has stronger applicability and does not require fenestration. deal with.
  • the skeleton material of the blood vessel stent 100 (that is, the annular unit 112 and the connecting portion) can be made of any existing material that meets the requirements, such as nickel-titanium alloy; the first film-coated section 120 and the second film-coated section
  • the coating material of section 130 may be polytetrafluoroethylene or the like.
  • the first film-coated section 120, the second film-coated section 130, and the bare section 140 can be manufactured separately and then assembled together.
  • the keel wire is woven around a predetermined metal wire.
  • the keel line can be more closely fitted or integrated into the exposed section, so that the integrity of the exposed section is better.
  • the keel thread can be woven before weaving the exposed section, or after weaving.
  • the keel line is in the shape of a straight line, a broken line or a spiral line.
  • the keel line can be designed according to the required torsion characteristics of the exposed section, so that the exposed section has better mechanical properties and is more in line with the characteristics of the vascular arch.
  • the material of the preset metal wire is Nitinol. In this way, the exposed section 140 has better mechanical properties without affecting blood flow.
  • first film-coated section 120 and the exposed section 140, and the second film-coated section 130 and the exposed section 140 may be connected by a connecting portion, or may be connected by a film.
  • the connecting portion is a film-coated connector or a metal connector.
  • the first film-coated section 120 and the second film-coated section 130 can be directly connected to form a closed pipeline through a film-coated connector, or a metal connector can connect a plurality of annular units 112 into a whole, and then be coated to form a closed pipe. Pipeline.
  • the exposed section 140 can be connected to the pipeline through a metal connector; the first covered section 120 and the second covered section 130 have a blocking function, and the exposed section 140 has a docking and communication function, which is convenient for commercializing the blood vessel stent 100.
  • top refers to the position of the top of the aorta 300 after the vascular stent 100 is installed or preset; “both sides” refers to the position of the top of the aorta 300 after the vascular stent 100 is installed or preset, corresponding to both sides of the top of the aorta 300 , And not opposite to the "top” position.
  • the length of the first film-coated section 120 is 10mm ⁇ 90mm, and its diameter is 20mm ⁇ 60mm; for example, the length is 10mm, 40mm, 45mm, 50mm or 90mm; the diameter is Any combination of 20mm, 30mm, 40mm, 50mm or 60mm.
  • the length of the second film-coated section 130 is 10mm ⁇ 300mm, and its diameter is 10mm ⁇ 40mm; for example, the length is 10mm, 100mm, 150mm, 200mm or 300mm; the diameter is 10mm, 20mm, Any combination of 30mm or 40mm.
  • the length of or/and the exposed section 140 is 40 mm to 200 mm, and the diameter thereof is 10 mm to 40 mm.
  • the length is 40mm, 90mm, 100mm, 120mm or 200mm; the diameter is any combination of 10mm, 20mm, 30mm or 40mm.
  • the specific structure of the ring unit 112 can refer to the structure of any existing ring unit 112 of the blood vessel stent 100.
  • the wave structure of the ring unit 112 can be designed with different sine wave numbers, and the connection between the ring unit 112 and the ring unit 112 can be a peak-to-peak connection or a peak-to-valley connection.
  • the stent body 110 has a tapered structure as a whole.
  • a stent system which includes the vascular stent 100 in any of the above embodiments, and further includes a delivery device 200, which is used to deliver the vascular stent 100 into the aorta 300.
  • the corresponding vascular stent 100 is delivered into the aorta 300 by the delivery device 200, and the first graft segment 120 is set in the ascending area.
  • the aorta 310, the exposed section 140 is set on the arch 320 of the aorta 300, and does not hinder the communication between the aorta 300 and the three branch arteries 400, and the second covered section 130 is set on the descending aorta 330; due to the first covered section 120 and the second covered segment 130 can be covered with a membrane, which can be used to seal the ascending aorta 310 or descending aorta 330 or the breach on the ascending aorta 310 and the descending aorta 330, and form a vascular stent With the fixing structure of 100, the two ends of the blood vessel stent 100 can be reliably fixed.
  • the exposed section 140 is made by a braiding process, which can naturally form a plurality of meshes 144 (without windowing treatment) meshes, which will help ensure the safety of the vascular arch, and facilitate the aorta 300 and the arch 320 of the aorta 300
  • the upper three branch arteries 400 are connected, which is easy to fit the intima of the aorta 300 and does not affect the branch blood flow. It maintains the original blood flow stability of the aorta 300, which is beneficial to reduce the risk of damage to the arch vessels and the design of the keel line is increased.
  • the integrity of the vascular stent makes the exposed section have a certain torsion, which is more in line with the anatomical structure of the blood vessel, which is beneficial to improve the reliability of the fixation of the two ends of the vascular stent 100, makes the installation of the vascular stent 100 safe and reliable, and is beneficial to improve the operation. Quality, reduce the risk of surgery.
  • the vascular stent 100 of the present application can be applied to the ascending aorta 310, the descending aorta 330, or the ascending aorta 310 and the descending aorta 330, and the applicability is stronger, and there is no need for fenestration. deal with.
  • the specific structure of the aforementioned delivery device 200 can be implemented with reference to the delivery device 200 disclosed in the prior art that can meet the delivery of the vascular stent 100.
  • the present application provides a conveying device 200 that is different from the prior art.
  • the conveying device 200 includes a conveying tube 210 and a control mechanism 220.
  • the conveying tube 210 includes The introduction body 212 at the free end of the delivery tube 210, and the first tube body 214 for storing the vascular stent 100, and the second tube body 216, the first tube body 214 can be bent relative to the second tube body 216, and the first tube One end of the body 214 is detachably connected to the introduction body 212, the other end of the first tube body 214 is connected to one end of the second tube body 216, and the other end of the second tube body 216 is arranged on the control mechanism 220.
  • the control mechanism 220 includes The first control part 222 for releasing the blood vessel stent 100, the second control part 224 for controlling the bending of the first tube body 214, and the first force applying part 226 for pushing or withdrawing the delivery tube 210.
  • the introduction body 212 is used to introduce the first tube body 214, and the introduction part cooperates with the first tube body 214 to form the storage cavity of the blood vessel stent 100, and the first control part 222 is used to release the blood vessel stent 100.
  • the specific matching structure can be referred to Prior art; both a first tube body 214 that can be bent and a second control part 224 for controlling the first tube body 214 to bend are used.
  • the first The tube 214 can be bent, so that the vascular stent 100 can smoothly and safely pass through the arch 320 of the larger aorta 300 without damaging the aorta 300 and branch blood vessels; it can overcome the failure of the existing delivery device 200
  • the problem that the arch 320 of the aorta 300 is difficult or the arch 320 of the aorta 300 is easily damaged during the delivery of the vascular stent 100 can reduce the risk of surgery.
  • the conveying pipe 210 can be adjustable in one direction or in two opposite directions, and the angle of the adjustment is greater than 0 degree and less than or equal to 180 degrees.
  • the diameter of the delivery pipe 210 can be designed according to actual needs.
  • the introduction body 212 has a conical shape, and the head has a spherical shape.
  • the specific structure of the introduction body 212 can also refer to other existing structures.
  • the length of the introduction body 212 is 10 mm to 55 mm.
  • the second control portion 224 includes a traction member 202 and a movably disposed second force applying portion 204.
  • One end of the traction member 202 and the introduction The body 212 or/and the first tube body 214 are fixedly connected, and the other end is fixedly connected to the second force applying portion 204.
  • the traction member 202 can be contracted, and then the introduction body 212 or the first tube body 214 can be stretched, so that the first tube body 214 can bend with respect to the second tube body 216.
  • the second force applying portion 204 can be rotatably arranged or telescopically arranged. Furthermore, the control of the traction member 202 can be achieved by rotating or stretching. As shown in FIG. 5, specifically in this embodiment, the second force applying portion 204 can be rotatably disposed on the control mechanism 220.
  • the degree of bending of the first tube 214 can be controlled more finely, which can adapt to different bow 320 types.
  • one of the second force 204 can be rotated to make the first tube bend, and then when the first tube is bent, the other second force 204 can be controlled to bend, so that the bending angle of the first tube can be increased. change.
  • the traction member 202 is a traction rope or a traction chain.
  • the traction member 202 is a traction rope, which is beneficial to save space, so that the volume of the conveying device can be smaller, especially the volume of the conveying tube is smaller, which is suitable for micro Invasive surgery.
  • the aforementioned conveying device 200 may also be provided with a rear release structure 228, such as CN208552127U.
  • the above-mentioned stent system can be applied to minimally invasive treatment, which is beneficial to reduce the patient's pain and surgical risk.
  • the improvement of the blood vessel stent 100 can greatly shorten the operation time of the surgeon and increase the probability of saving lives.
  • the structure of the blood vessel stent 100 and the structure of the adjustable bend delivery tube 210 ensure the safety, effectiveness and convenience of the product in use.

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Abstract

一种支架系统及血管支架（100），该血管支架（100）包括支架主体（110），支架主体（110）包括间隔设置的多个环形单元（112）、以及将所有环形单元（112）连接成管状结构的连接部，管状结构包括设有覆膜的第一覆膜段（120）及第二覆膜段（130）、以及对接第一覆膜段（120）及第二覆膜段（130）的裸露段（140）。该血管支架（100）安装可靠，有利于减少手术前预处理工作及术后调整工作。该支架系统能实现血管支架（100）的可靠安装，有利于提高手术质量，降低手术时间。

Description

支架系统及血管支架 技术领域
本发明涉及医疗器械技术领域，特别是涉及一种支架系统及血管支架。
背景技术
近几年，有学者开始尝试使用腔内隔绝术治疗主动脉疾病，相关的烟囱、开窗技术开始取得一些效果，其结果令人鼓舞。然而由于主动脉的弓部的解剖结构的特殊性和血流动力学的复杂性，加上传统的支架系统弹性回直力大，使得此类手术风险性较高。
发明内容
基于此，有必要提供一种支架系统及血管支架，该血管支架安装可靠，能降低弓部血管被损伤的风险，有利于提高手术质量，降低手术风险。
其技术方案如下：
一方面，本申请提供一种血管支架，包括支架主体，支架主体包括间隔设置的多个环形单元、以及将所有环形单元连接成管状结构的连接部，管状结构包括设有覆膜的第一覆膜段及第二覆膜段，支架主体还包括对接第一覆膜段及第二覆膜段的裸露段，裸露段通过预设金属丝编织而成，且裸露段设有贯穿其两端的至少一条龙骨线。
上述血管支架使用时，将血管支架送入主动脉，第一覆膜段设置于升主动脉，裸露段设置于主动脉的弓部上，且不阻碍主动脉与三根支动脉连通，第二覆膜段设置于降主动脉；由于第一覆膜段及第二覆膜段能覆盖有覆膜，可以利 用覆膜用于封堵升主动脉或降主动脉或升主动脉和降主动脉上的破口，且形成血管支架的固定结构，即可血管支架的两端固定可靠。此时，裸露段采用编织工艺制成，可以自然形成多个网孔(无需进行开窗处理)，将有利于保证血管弓部的安全性，便于主动脉与主动脉的弓部上三根支动脉连通，易于贴合主动脉内膜且不影响分支血流，保持主动脉原有的血流稳定性，有利于降低弓部血管被损伤的风险。同时龙骨线的设计增加了血管支架的整体性，使得裸露段具有一定的扭转性，更符合血管的解剖结构，有利于提高血管支架的两端固定的可靠性，使得本血管支架安装安全可靠，有利于提高手术质量，降低手术风险。此外，有前述分析可知，本申请的血管支架能够适用于升主动脉、降主动脉或升主动脉和降主动脉的病变封堵，适用性更强，且无需进行开窗处理。
下面进一步对技术方案进行说明：
在其中一个实施例中，龙骨线绕织于预设金属丝。
在其中一个实施例中，龙骨线呈直线形、折线形或螺旋线形。
在其中一个实施例中，预设金属丝的材质为镍钛合金。
在其中一个实施例中，第一覆膜段的长度是10mm～90mm，其直径为20mm～60mm；或/和第二覆膜段的长度是10mm～300mm，其直径为10mm～40mm；或/和裸露段的长度是40mm～200mm，其直径为10mm～40mm。
另一方面，本申请还提供了一种支架系统，包括上述任一实施例中的血管支架，还包括输送装置，输送装置用于将血管支架送入主动脉。
该支架系统利用输送装置将对应的血管支架送入主动脉，第一覆膜段设置于升主动脉，裸露段设置于主动脉的弓部上，且不阻碍主动脉与三根支动脉连通，第二覆膜段设置于降主动脉；由于第一覆膜段及第二覆膜段能覆盖有覆膜，可以利用覆膜用于封堵升主动脉或降主动脉或升主动脉和降主动脉上的破口， 且形成血管支架的固定结构，即可血管支架的两端固定可靠。此时，裸露段采用编织工艺制成，可以自然形成多个网孔(无需进行开窗处理)，将有利于保证血管弓部的安全性，便于主动脉与主动脉的弓部上三根支动脉连通，易于贴合主动脉内膜且不影响分支血流，保持主动脉原有的血流稳定性，有利于降低弓部血管被损伤的风险。同时龙骨线的设计增加了血管支架的整体性，使得裸露段具有一定的扭转性，更符合血管的解剖结构，有利于提高血管支架的两端固定的可靠性，使得本血管支架安装安全可靠，有利于提高手术质量，降低手术风险。此外，有前述分析可知，本申请的血管支架能够适用于升主动脉、降主动脉或升主动脉和降主动脉的病变封堵，适用性更强，且无需进行开窗处理网孔。
下面进一步对技术方案进行说明：
在其中一个实施例中，输送装置包括输送管以及控制机构，输送管包括设置于输送管的自由端的导入体、及用于存放血管支架的第一管体、以及第二管体，第一管体能够相对于第二管体弯曲，且第一管体的一端与导入体可拆卸连接，第一管体的另一端与第二管体的一端连接，第二管体的另一端设置于控制机构上，控制机构包括用于释放血管支架的第一控制部、以及用于控制第一管体弯曲的第二控制部、以及用于推送或抽出输送管的第一施力部。由于本输送装置采用了能够弯曲的第一管体及用于控制第一管体进行弯曲的第一控制部，该输送管进入到主动脉的弓部时，第一管体可以进行弯曲，使得血管支架能够顺利、安全的通过弯曲较大的主动脉的弓部，且能够克服现有的输送装置过主动脉的弓部困难或输送血管支架过程中易伤害主动脉的弓部的问题，降低手术风险。
在其中一个实施例中，第二控制部包括牵引件及可活动设置的第二施力部， 牵引件的一端与导入体或/和第一管体固定连接，另一端与第二施力部固定连接。
在其中一个实施例中，第二施力部可转动设置或可伸缩设置。
在其中一个实施例中，牵引件及与牵引件一一对应的第二施力部至少为两个，且至少一个牵引件的一端与导入体固定连接，至少一个牵引件的一端与第一管体固定连接。
附图说明
图1为一实施例中的血管支架的结构示意图；
图2为图1所示的裸露段的结构示意图；
图3为图1所示的血管支架应用于Stanford A型主动脉夹层疾病的治疗时的示意图；
图4为另一实施例中支架系统应用于Stanford A型主动脉夹层疾病的治疗时的示意图；
图5为图4所示的输送装置的结构示意图；
图6为一实施例中所示的输送装置的局部剖视的第二控制部的结构示意图；
图7为一实施例中所示的输送装置的局部剖视的牵引件与导入体的装配示意图。
附图标记说明：
100、血管支架，110、支架主体，112、环形单元，120、第一覆膜段，130、第二覆膜段，140、裸露段，142、龙骨线，144、网孔，200、输送装置，210、输送管，212、导入体，214、第一管体，216、第二管体，220、控制机构，222、第一控制部，224、第二控制部，202、牵引件，204、第二施力部，226、第一 施力部，228、后释放结构，300、主动脉，310、升主动脉，320、弓部，330、降主动脉，400、支动脉。
具体实施方式
为使本发明的目的、技术方案及优点更加清楚明白，以下结合附图及具体实施方式，对本发明进行进一步的详细说明。应当理解的是，此处所描述的具体实施方式仅用以解释本发明，并不限定本发明的保护范围。
需要说明的是，当元件被称为“固定于”、“设置于”、“固设于”或“安设于”另一个元件，它可以直接在另一个元件上或者也可以存在居中的元件。当一个元件被认为是“连接”另一个元件，它可以是直接连接到另一个元件或者可能同时存在居中元件。进一步地，当一个元件被认为是“固定传动连接”另一个元件，二者可以是可拆卸连接方式的固定，也可以不可拆卸连接的固定，如套接、卡接、一体成型固定、焊接等，在现有技术中可以实现，在此不再累赘。当元件与另一个元件相互垂直或近似垂直是指二者的理想状态是垂直，但是因制造及装配的影响，可以存在一定的垂直误差。本文所使用的术语“垂直的”、“水平的”、“左”、“右”以及类似的表述只是为了说明的目的，并不表示是唯一的实施方式。
除非另有定义，本文所使用的所有的技术和科学术语与属于本发明的技术领域的技术人员通常理解的含义相同。本文中在本发明的说明书中所使用的术语只是为了描述具体的实施方式的目的，不是旨在于限制本发明。本文所使用的术语“及/或”包括一个或多个相关的所列项目的任意的和所有的组合。
本发明中涉及的“第一”、“第二”不代表具体的数量及顺序，仅仅是用于名称的区分。
Stanford A型主动脉夹层((acute aortic dissection type A，简称AADA))是一种严重危及病人生命安全的灾难性疾病，其特点是起病突然，病情进展迅速，死亡率高。
如图1及图2所示，一实施例中，提供一种血管支架100，包括支架主体110，支架主体110包括间隔设置的多个环形单元112、以及将所有环形单元112连接成管状结构的连接部，管状结构包括设有覆膜的第一覆膜段120及第二覆膜段130，支架主体110还包括对接第一覆膜段120及第二覆膜段130的裸露段140，裸露段140通过预设金属丝编织而成，且裸露段140设有贯穿其两端的至少一条龙骨线142。
如图1及图3所示，上述血管支架100应用于Stanford A型主动脉夹层疾病的治疗时，将血管支架100送入主动脉300，第一覆膜段120设置于升主动脉310，裸露段140设置于主动脉300的弓部320上，且不阻碍主动脉300与三根支动脉400连通，第二覆膜段130设置于降主动脉330；由于第一覆膜段120及第二覆膜段130能覆盖有覆膜，可以利用覆膜用于封堵升主动脉310或降主动脉330或升主动脉310和降主动脉330上的破口，且形成血管支架100的固定结构，即可血管支架100的两端固定可靠.此时，裸露段140采用编织工艺制成，可以自然形成多个网孔144(无需进行开窗处理)网孔，将有利于保证血管弓部的安全性，便于主动脉300与主动脉300的弓部320上三根支动脉400连通，易于贴合主动脉300内膜且不影响分支血流，保持主动脉300原有的血流稳定性，有利于降低弓部血管被损伤的风险同时龙骨线的设计增加了血管支架的整体性，使得裸露段具有一定的扭转性，更符合血管的解剖结构，有利于提高血管支架100的两端固定的可靠性，使得本血管支架100安装安全可靠，有利于提高手术质量，降低手术风险。此外，有前述分析可知，本申请的血管支架100 能够适用于升主动脉310、降主动脉330或升主动脉310和降主动脉330的病变封堵，适用性更强，且无需进行开窗处理。
需要说明的是，上述血管支架100的骨架材质(即环形单元112及连接部)可以采用任意一种满足要求的现有材料制造，如镍钛合金；第一覆膜段120及第二覆膜段130的覆膜材料可以为聚四氟乙烯等。制造时，第一覆膜段120、第二覆膜段130、裸露段140可以分别制造、再组装一起。
在上述实施例的基础上，如图2所示，一实施例中，龙骨线绕织于预设金属丝。如此，使得该龙骨线可以更加贴合或融入裸露段中，使得裸露段的整体性更好。此时，该龙骨线可以在裸露段编制之前进行绕织，也可以编制好之后进行绕织。
在上述实施例的基础上，一实施例中，龙骨线呈直线形、折线形或螺旋线形。如此，可以根据裸露段所需的扭转特性，设计龙骨线，使得该裸露段具有更好的力学性能，更符合血管弓部特性。
在上述实施例的基础上，一实施例中，预设金属丝的材质为镍钛合金。如此，使得该裸露段140具有更好的力学性能，且不会影响血流。
此外，第一覆膜段120与裸露段140、第二覆膜段130与裸露段140可以采用连接部进行连接，也可以采用覆膜进行连接。
在上述任一实施例的基础上，如图1及图3所示，一实施例中，连接部为覆膜连接体或金属连接体。如此，第一覆膜段120及第二覆膜段130可以通过覆膜连接体直接连接成一个封闭的管道，或先金属连接体将多个环形单元112连接成一个整体，再覆膜形成封闭的管道。此时，裸露段140可以通过金属连接体与管道连接；使得第一覆膜段120及第二覆膜段130具有封堵功能，裸露段140具有对接连通功能，便于将血管支架100产品化。
需要说明的是，“顶部”为血管支架100安装后或预设，对应主动脉300的顶部的位置；“两侧”为血管支架100安装后或预设，对应主动脉300的顶部的两侧、且不与“顶部”相对的位置。
在上述任一实施例的基础上，一实施例中，第一覆膜段120的长度是10mm～90mm，其直径为20mm～60mm；如长度为10mm、40mm、45mm、50mm或90mm；直径为20mm、30mm、40mm、50mm或60mm的任意组合。
进一步地，一实施例中，或/和第二覆膜段130的长度是10mm～300mm，其直径为10mm～40mm；如长度为10mm、100mm、150mm、200mm或300mm；直径为10mm、20mm、30mm或40mm的任意组合。
进一步地，一实施例中，或/和裸露段140的长度是40mm～200mm，其直径为10mm～40mm。如长度为40mm、90mm、100mm、120mm或200mm；直径为10mm、20mm、30mm或40mm的任意组合。
如此，可以根据实际要求进行设置。
环形单元112的具体结构可以参照任意一种现有的血管支架100的环形单元112的结构。具体到本实施例中，环形单元112的波形结构可设计成不同的正玄波数，且环形单元112与环形单元112的连接方式可以是波峰对波峰的连接方式亦可是波峰对波谷的连接方式。
在上述任一实施例的基础上，一实施例中，支架主体110整体呈锥形结构。
一实施例中，如图4所示，还提供了一种支架系统，包括上述任一实施例中的血管支架100，还包括输送装置200，输送装置200用于将血管支架100送入主动脉300。
如图3及图4所示，该支架系统应用于Stanford A型主动脉夹层疾病的治疗时，利用输送装置200将对应的血管支架100送入主动脉300，第一覆膜段 120设置于升主动脉310，裸露段140设置于主动脉300的弓部320上，且不阻碍主动脉300与三根支动脉400连通，第二覆膜段130设置于降主动脉330；由于第一覆膜段120及第二覆膜段130能覆盖有覆膜，可以利用覆膜用于封堵升主动脉310或降主动脉330或升主动脉310和降主动脉330上的破口，且形成血管支架100的固定结构，即可血管支架100的两端固定可靠。裸露段140采用编织工艺制成，可以自然形成多个网孔144(无需进行开窗处理)网孔，将有利于保证血管弓部的安全性，便于主动脉300与主动脉300的弓部320上三根支动脉400连通，易于贴合主动脉300内膜且不影响分支血流，保持主动脉300原有的血流稳定性，有利于降低弓部血管被损伤的风险同时龙骨线的设计增加了血管支架的整体性，使得裸露段具有一定的扭转性，更符合血管的解剖结构，有利于提高血管支架100的两端固定的可靠性，使得本血管支架100安装安全可靠，有利于提高手术质量，降低手术风险。此外，有前述分析可知，本申请的血管支架100能够适用于升主动脉310、降主动脉330或升主动脉310和降主动脉330的病变封堵，适用性更强，且无需进行开窗处理。
上述输送装置200具体结构可参考现有技术公开的能够满足本血管支架100输送的输送装置200实现。
如图4及图5所示，具体到本实施例中，本申请提供一种区别于现有技术的输送装置200，该输送装置200包括输送管210以及控制机构220，输送管210包括设置于输送管210的自由端的导入体212、及用于存放血管支架100的第一管体214、以及第二管体216，第一管体214能够相对于第二管体216弯曲，且第一管体214的一端与导入体212可拆卸连接，第一管体214的另一端与第二管体216的一端连接，第二管体216的另一端设置于控制机构220上，控制机构220包括用于释放血管支架100的第一控制部222、以及用于控制第一管体 214弯曲的第二控制部224、以及用于推送或抽出输送管210的第一施力部226。利用导入体212导入第一管体214，且导入部与第一管体214相配合形成血管支架100的存放腔，且利用第一控制部222进行血管支架100的释放，其具体配合结构可参考现有技术；同时采用了能够弯曲的第一管体214及用于控制第一管体214进行弯曲的第二控制部224，该输送管210进入到主动脉300的弓部320时，第一管体214可以进行弯曲，使得血管支架100能够顺利、安全的通过弯曲较大的主动脉300的弓部320，而不会伤及主动脉300和分支血管；能够克服现有的输送装置200过主动脉300的弓部320困难或输送血管支架100过程中易伤害主动脉300的弓部320的问题，降低手术风险。
具体地，以同一基准面为参考，输送管210可在某一个方向可调弯亦或在两个相反的方向均可调弯，调弯的角度大于0度小于等于180度。
该输送管210的直径可以根据实际需要进行设计。
具体到本实施例中，该导入体212呈圆锥形、且头部呈圆球状。当然了，该导入体212的具体结构还可以参考其他现有的结构。
此外，该导入体212的长度为10mm～55mm。
在上述实施例的基础上，如图4至图7所示，一实施例中，第二控制部224包括牵引件202及可活动设置的第二施力部204，牵引件202的一端与导入体212或/和第一管体214固定连接，另一端与第二施力部204固定连接。如此，可以通过移动第二施力部204，使得牵引件202能够收缩，进而拉伸导入体212或第一管体214，使得第一管体214能够相对于第二管体216弯曲。
在上述实施例的基础上，一实施例中，第二施力部204可转动设置或可伸缩设置。进而可以通过旋转或拉伸的方式实现对牵引件202的控制。如图5所示，具体到本实施例中，该第二施力部204可转动设置于控制机构220上。
在前两个实施例的基础上，一实施例中，牵引件202及与牵引件202一一对应的第二施力部204均至少为两个，且至少一个牵引件202的一端与导入体212固定连接，至少一个牵引件202的一端与第一管体214固定连接。如此，通过至少两个控制点，使得第一管体214的弯曲程度控制得更加精细，能够适应不同的弓部320类型。如可先旋转其中一个第二施力204使得第一管体弯曲，然后在第一管体弯曲的境况下，再控制另一个第二施力204弯曲，使得第一管体的弯曲角度可以多变。
此外，一实施例中，牵引件202为牵引绳或牵引链条。
具体到本实施例中，如图6及图7所示，该牵引件202为牵引绳，有利于节省空间，使得输送装置的体积可以更小，特别是输送管的体积更小，适用于微创手术。
当然了，参考现有技术，上述输送装置200还可以设置有后释放结构228，如CN208552127U等。
上述支架系统能够应用于微创治疗，有利于降低了病人的痛苦和手术风险，同时血管支架100的改进，能够极大的缩短术者的手术时间，增加了挽回生命的概率。同时，血管支架100的结构及可调弯输送管210的结构保证了产品使用时的安全性、有效性和便捷性。
以上实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。
以上实施例仅表达了本发明的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对发明专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干变形和改进， 这些都属于本发明的保护范围。因此，本发明专利的保护范围应以所附权利要求为准。

Claims (10)

  1. 一种血管支架，其特征在于，包括支架主体，所述支架主体包括间隔设置的多个环形单元、以及将所有所述环形单元连接成管状结构的连接部，所述管状结构包括设有覆膜的第一覆膜段及第二覆膜段，所述支架主体还包括对接所述第一覆膜段及所述第二覆膜段的裸露段，所述裸露段通过预设金属丝编织而成，且所述裸露段设有网孔及贯穿其两端的至少一条龙骨线。
  2. 根据权利要求1所述的血管支架，其特征在于，所述龙骨线绕织于所述预设金属丝。
  3. 根据权利要求1所述的血管支架，其特征在于，所述龙骨线呈直线形、折线形或螺旋线形。
  4. 根据权利要求1所述的血管支架，其特征在于，所述预设金属丝的材质为镍钛合金。
  5. 根据权利要求1至4任一项所述的血管支架，其特征在于，所述第一覆膜段的长度是10mm～90mm，其直径为20mm～60mm；或/和所述第二覆膜段的长度是10mm～300mm，其直径为10mm～40mm；或/和所述裸露段的长度是40mm～200mm，其直径为10mm～40mm。
  6. 一种支架系统，其特征在于，包括如权利要求1至5任一项所述的血管支架，还包括输送装置，所述输送装置用于将所述血管支架送入主动脉。
  7. 根据权利要求6所述的支架系统，其特征在于，所述输送装置包括输送管以及控制机构，所述输送管包括设置于所述输送管的自由端的导入体、及用于存放所述血管支架的第一管体、以及第二管体，所述第一管体能够相对于所述第二管体弯曲，且所述第一管体的一端与所述导入体可拆卸连接，所述第一 管体的另一端与所述第二管体的一端连接，所述第二管体的另一端设置于所述控制机构上，所述控制机构包括用于释放所述血管支架的第一控制部、以及用于控制所述第一管体弯曲的第二控制部、以及用于推送或抽出所述输送管的第一施力部。
  8. 根据权利要求7所述的支架系统，其特征在于，所述第二控制部包括牵引件及可活动设置的第二施力部，所述牵引件的一端与所述导入体或/和所述第一管体固定连接，另一端与第二施力部固定连接。
  9. 根据权利要求8所述的支架系统，其特征在于，所述第二施力部可转动设置或可伸缩设置。
  10. 根据权利要求8或9所述的支架系统，其特征在于，所述牵引件及与所述牵引件一一对应的第二施力部至少为两个，且至少一个所述牵引件的一端与所述导入体固定连接，至少一个所述牵引件的一端与所述第一管体固定连接。
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