WO2023280030A1 - 支架及取栓系统 - Google Patents

支架及取栓系统 Download PDF

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Publication number
WO2023280030A1
WO2023280030A1 PCT/CN2022/102242 CN2022102242W WO2023280030A1 WO 2023280030 A1 WO2023280030 A1 WO 2023280030A1 CN 2022102242 W CN2022102242 W CN 2022102242W WO 2023280030 A1 WO2023280030 A1 WO 2023280030A1
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WIPO (PCT)
Prior art keywords
closed
stent
main body
developing
loop
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PCT/CN2022/102242
Other languages
English (en)
French (fr)
Inventor
刘建民
扈昕瞳
孟繁鹤
�田�浩
候娟
Original Assignee
微创神通医疗科技(上海)有限公司
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Application filed by 微创神通医疗科技(上海)有限公司 filed Critical 微创神通医疗科技(上海)有限公司
Priority to EP22836784.3A priority Critical patent/EP4353161A1/en
Publication of WO2023280030A1 publication Critical patent/WO2023280030A1/zh

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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/22Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
    • A61B17/221Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/22Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
    • A61B17/22031Gripping instruments, e.g. forceps, for removing or smashing calculi
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/82Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/82Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/86Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
    • A61F2/90Stents 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
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/82Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/86Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
    • A61F2/90Stents 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
    • A61F2/91Stents 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 made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes
    • A61F2/915Stents 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 made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes with bands having a meander structure, adjacent bands being connected to each other
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00831Material properties
    • A61B2017/00902Material properties transparent or translucent
    • A61B2017/00915Material properties transparent or translucent for radioactive radiation
    • A61B2017/0092Material properties transparent or translucent for radioactive radiation for X-rays
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/22Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
    • A61B17/22031Gripping instruments, e.g. forceps, for removing or smashing calculi
    • A61B2017/22034Gripping instruments, e.g. forceps, for removing or smashing calculi for gripping the obstruction or the tissue part from inside
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/22Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
    • A61B17/22031Gripping instruments, e.g. forceps, for removing or smashing calculi
    • A61B2017/22035Gripping instruments, e.g. forceps, for removing or smashing calculi for retrieving or repositioning foreign objects
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/22Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
    • A61B2017/22094Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for for crossing total occlusions, i.e. piercing
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/22Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
    • A61B17/221Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions
    • A61B2017/2212Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions having a closed distal end, e.g. a loop
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/22Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
    • A61B17/221Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions
    • A61B2017/2215Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions having an open distal end
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/39Markers, e.g. radio-opaque or breast lesions markers
    • A61B2090/3966Radiopaque markers visible in an X-ray image

Definitions

  • the invention relates to the technical field of medical devices, in particular to a bracket and a thrombectomy system comprising the bracket.
  • Stroke also known as stroke, is an acute cerebrovascular disease characterized by cerebral ischemia and hemorrhagic injury as the main clinical manifestations.
  • the key to its treatment is to restore cerebral blood flow as soon as possible and reduce secondary brain damage before the brain tissue is permanently damaged due to ischemia.
  • Arterial and intravenous drug thrombolysis is a routine method for the treatment of acute ischemic stroke. Although it has been shown that it can improve the prognosis of the nervous system, drug thrombolysis still faces some problems. Firstly, the time window for thrombolysis is short, intravenous thrombolysis should be performed within 3 hours of onset, and the time window for arterial thrombolysis is only 6 hours, and the extremely short time window results in only a small number of patients receiving thrombolysis; secondly, drugs Thrombolysis takes a long time to recanalize blood vessels, which may be an important factor affecting clinical prognosis, while the recanalization time of arterial and venous thrombolysis requires at least 1 to 2 hours; again, thrombolytic therapy is only suitable for patients with smaller volumes. Small thrombi have a low rate of recanalization in acute ischemic stroke due to severe large vessel occlusion; finally, some patients are not candidates for thrombolytic therapy.
  • the existing mechanical thrombectomy usually uses an intracranial thrombectomy device, which is usually a metal stent made by laser cutting technology, but there are still many problems to be solved for these metal stents, one of the main problems is It is a group of development points or development wires set on the metal stent. Under X-rays, only the positioning or outline of the metal stent during the operation can be displayed, and all the metal rods of the laser-cut metal stent cannot be fully displayed.
  • a thrombus retrieval device for blood vessels also appears on the market.
  • this type of thrombus retrieval device In addition to setting multiple imaging points at the distal end of the stent, this type of thrombus retrieval device also sets multiple sets of marking points on the main body of the stent segmentally. Using the marking point can help the operating doctor determine the position and direction of the thrombectomy device in the blood vessel. But the development effect of above-mentioned thrombectomy device is also far from reaching the optimum state.
  • the object of the present invention is to provide a bracket and a thrombectomy system including the bracket, so as to solve one or more problems in the prior art.
  • the bracket includes a bracket body and a developing structure, and the bracket body is formed by coupling with at least one closed-loop network unit, and the closed-loop network unit is surrounded by wave rods, and the developing structure includes a main body developing, and the main body
  • the developer has at least one main body developer filament that wraps around at least part of the stent body along the wave bar.
  • the developing filament of the main body is spirally wound around the pole.
  • the main body developing wire is arranged from the proximal end to the distal end of the stent body or from the distal end to the proximal end of the stent body.
  • the developing wire of the main body forms a developing mesh unit along the path of the wave rod winding the stent body, and the developing mesh unit marks the structure and/or position of the stent.
  • the developing mesh unit is a closed geometric shape
  • the developing mesh unit has a semi-open geometric shape.
  • the area of the developing mesh unit is the same as the area of the closed-loop mesh unit at the position of the support body;
  • the area of the developing mesh unit is smaller than the area of the closed-loop mesh unit of the support body at this position;
  • the area of the developing mesh unit is the sum of the areas of several closed-loop mesh units at the position of the support body.
  • the closed-loop network unit includes at least one first closed-loop network unit and at least one second closed-loop network unit, and the area enclosed by the first closed-loop network unit is larger than the area enclosed by the second closed-loop network unit.
  • the area enclosed by the first closed-loop network unit is 2 to 5 times the area enclosed by the second closed-loop network unit.
  • the number of the first closed-loop network units is 1/20-1/3 of the number of the second closed-loop network units.
  • the main body developing wire is attached to at least one of the first closed-loop mesh units in a winding manner, so that at least one of the first closed-loop mesh units can be developed on the support body.
  • the main body developing wire is wound around all the poles of at least one of the first closed-loop mesh units and wound around part of the poles of at least one of the second closed-loop mesh units.
  • At least one of the first closed-loop mesh units has a part of the wave bar that is wound by the main body developing wire at least twice.
  • main body developing filament is wound on at least one part of the probe of the first closed-loop mesh unit and wound on at least one part of the stem of the second closed-loop mesh unit.
  • the number of the main body developing wires is at least two, one of the main body developing wires is wound on a part of the wave rod of at least one of the first closed-loop mesh units and wound on at least one of the second closed-loop mesh units part of the protruding rods, the other said main body developing wire is wound on the remaining propelling rods of at least one said first closed-loop mesh unit and wound on at least one part of said propelling rods of said second closed-loop mesh unit.
  • the number of the main body developing filaments is 1-8.
  • the visualization structure also includes a distal visualization, and the distal visualization is connected to the distal end of the stent body.
  • the proximal end of the distal display is integrally or detachably connected with the distal display of the main body.
  • the first distal development wire is wound to form at least one wrapping structure on the distal wave rod of the stent body.
  • distal development is a second distal development wire
  • the second distal development wire wraps around the axial ring formed by the distal pole of the stent body and around the axial ring in a winding manner. Circumferential ring formed by outer winding.
  • distal end visualization is coaxial or non-coaxial with the proximal end of the stent body.
  • the visualization structure also includes a proximal visualization, and the proximal visualization is connected to the proximal end of the stent body.
  • the distal end of the proximal display is connected integrally or detachably with the proximal display of the main body.
  • proximal visualization is coaxial or non-coaxial with the distal end of the stent body.
  • the present invention also provides a thrombectomy system, which includes the above bracket and a push rod arranged at the proximal end of the bracket, and the push rod is arranged coaxially or non-coaxially with the bracket.
  • the stent of the present invention includes a stent body and a developing structure.
  • the stent body is formed by coupling with at least one closed-loop network unit.
  • the developing structure includes at least one main body developing wire, and the main body developing wire is wound around at least one part of the stent body along the wave rod. A part in which the main body developing wire forms a developing mesh unit along the spirally wound path of the wave rod.
  • the developing network unit marks the structure and/or position of the stent, which is convenient for the operator to judge the position of the stent body, provides more information for the operator to judge the position of the stent, and further improves the reliability of the stent body. visibility.
  • first closed-loop network unit and the second closed-loop network unit in the bracket body are both formed by a wave rod enclosure, wherein the enclosed area of the first closed-loop network unit is larger than the second closed-loop network unit, so that it can Improve the embedding efficiency of thrombus and improve the efficiency of thrombus removal.
  • the proximal development and the distal development are respectively set on the stent body, combined with the main body development, the stent body can realize the full development effect at any time, so that the operator can realize the whole body of the stent body during the operation. development.
  • Fig. 1 shows a schematic view of the unfolded structure of the stent of the present invention and a thrombectomy system including the stent.
  • Fig. 2 shows a schematic structural view of the stent according to the embodiment of the present invention and the stent in the thrombectomy system including the stent.
  • Fig. 3 shows a schematic structural diagram of a stent according to an embodiment of the present invention and a closed-loop network unit in a thrombectomy system including the stent.
  • Fig. 4 is a schematic diagram showing the area relationship between the development network unit and the closed-loop network unit in the stent according to the embodiment of the present invention and the thrombectomy system including the stent.
  • FIG. 5 shows a schematic diagram of a first winding path of main body development in a stent and a thrombus retrieval system including the stent according to an embodiment of the present invention.
  • FIG. 6 shows a schematic diagram of a second winding path of main body development in a stent and a thrombus retrieval system including the stent according to an embodiment of the present invention.
  • FIG. 7 shows a schematic diagram of a third wrapping path of main body development in a stent and a thrombus retrieval system including the stent according to an embodiment of the present invention.
  • FIG. 8 shows a schematic diagram of a fourth winding path of main body development in a stent and a thrombus retrieval system including the stent according to an embodiment of the present invention.
  • Fig. 9 shows a schematic winding diagram of a combination of the first winding path and the second winding path for the development of the main body in a stent and a thrombus retrieval system including the stent according to an embodiment of the present invention.
  • Fig. 10 shows a schematic diagram of the first winding path of main body development in the stent according to the second embodiment of the present invention and the thrombus retrieval system including the stent.
  • Fig. 11 shows a schematic diagram of the second winding path of main body development in the stent according to the second embodiment of the present invention and the thrombus retrieval system including the stent.
  • Fig. 12 shows a schematic diagram of the third winding path of main body development in the stent according to the second embodiment of the present invention and the thrombectomy system including the stent.
  • Fig. 13 shows a schematic diagram of the fourth winding path of main body development in the stent according to the second embodiment of the present invention and the thrombectomy system including the stent.
  • Fig. 14 shows a schematic diagram of the fifth winding path of main body development in the stent according to the second embodiment of the present invention and the thrombus retrieval system including the stent.
  • Fig. 15 shows a schematic diagram of the sixth winding path of main body development in the stent according to the second embodiment of the present invention and the thrombectomy system including the stent.
  • Fig. 16 shows a schematic diagram of the combination of the first winding path and the second winding path for main body development in the stent according to the second embodiment of the present invention and the thrombectomy system including the stent.
  • Fig. 17 shows a schematic winding diagram of the combination of the fifth winding path and the sixth winding path for main body development in the stent according to the second embodiment of the present invention and the thrombus retrieval system including the stent.
  • Fig. 18 shows a schematic diagram of the first winding path of main body development in the stent according to the third embodiment of the present invention and the thrombectomy system including the stent.
  • Fig. 19 shows a schematic diagram of the second winding path of main body development in the stent according to the third embodiment of the present invention and the thrombus retrieval system including the stent.
  • Fig. 20 shows a schematic diagram of the third winding path of main body development in the stent according to the third embodiment of the present invention and the thrombectomy system including the stent.
  • Fig. 21 shows a schematic diagram of the fourth winding path of main body development in the stent according to the third embodiment of the present invention and the thrombectomy system including the stent.
  • Fig. 22 shows a schematic diagram of the first structure of distal visualization in the stent and the thrombectomy system including the stent according to the embodiment of the present invention.
  • Fig. 23 shows a cross-sectional view of the distal end in the right view of the stent and the thrombectomy system including the stent according to the embodiment of the present invention.
  • Fig. 24 shows a sectional view of the front view of the distal end in the stent and the thrombectomy system including the stent according to the embodiment of the present invention.
  • Fig. 25 is a schematic diagram of the second structure of distal visualization in the stent and the thrombectomy system including the stent according to the embodiment of the present invention.
  • Fig. 26 shows an axonometric view of the second structure of distal visualization in the stent according to the embodiment of the present invention and the thrombectomy system comprising the stent.
  • Fig. 27 shows a top view of the second structure of distal visualization in the stent and the thrombectomy system including the stent according to the embodiment of the present invention.
  • Fig. 28 shows the front view of the second structure of distal visualization in the stent and the thrombectomy system including the stent according to the embodiment of the present invention.
  • Fig. 29 shows a top view of the second structure of distal visualization in the stent and the thrombectomy system including the stent according to the embodiment of the present invention.
  • Fig. 30 shows a schematic diagram of the third structure of distal visualization in the stent and the thrombectomy system including the stent according to the embodiment of the present invention.
  • Fig. 31 shows a schematic structural view of the proximal end visualization in the stent according to the embodiment of the present invention and the thrombectomy system including the stent.
  • proximal generally means proximate to the operator unless the content clearly dictates otherwise.
  • distal end is usually the end near the lesion in the patient. Taking Figure 1 as an example, the left side of Figure 1 is the far end, and the right side of Figure 1 is the proximal end.
  • the bracket includes a bracket body 4 and a developing structure.
  • the stent body 4 is formed of at least one closed-loop network unit coupled to each other to form a cylindrical structure but is not limited to a cylindrical structure. In other embodiments of the present invention, it can be coupled to form a spherical structure, a wedge-shaped structure, a spindle-shaped structure, or Any one or more combinations of other irregular bodies, the closed-loop network unit is formed by the pole enclosure.
  • the development structure includes a main body development 2, the main body development 2 includes at least one main body development wire, and the main body development wire wraps at least part of the bracket body 4 along the wave rod, preferably, the main body development wire Helically wound on the wave rod, and the main body developing wire is arranged along the proximal end to the distal end of the stent body 4 in the stent of the first embodiment.
  • the main body developing wires may also be arranged from the distal end to the proximal end of the stent body 4 , which is not limited in the present invention.
  • support body 4 The concrete structure of support body 4 is described below as follows:
  • the stent body 4 can expand itself circumferentially along the longitudinal axis, and the stent body 4 includes a distal portion 41 , a middle portion 42 and a proximal portion 43 connected in sequence.
  • the above closed-loop network unit includes at least one first closed-loop network unit 400 and at least one second closed-loop network unit 401 .
  • the above-mentioned first closed-loop mesh unit 400 is designed with a large mesh. This design enables the stent body 4 to be effectively embedded inside the thrombus when it is opened in the middle of the thrombus.
  • the first closed-loop network unit 400 may be a common mesh-shaped closed structure, and the shape of the mesh may be a circle, a rhombus, a hexagon, or the like.
  • the first closed-loop network unit 400 includes two first long-wave rods 4001 and second long-wave rods 4003 parallel to each other, and Two parallel first short-wave rods 4002 and second short-wave rods 4004, wherein the first long-wave rod 4001, the second long-wave rod 4003, the first short-wave rod 4002 and the second short-wave rod 4004 form a quadrilateral structure.
  • the second closed-loop mesh unit 401 is designed with a small mesh, which enables the stent body 4 to generate a large radial support force when catching thrombus during the release process, which is conducive to the withdrawal of the stent body 4. Drag the thrombus, and the thrombus is not easy to fall off during the withdrawal process.
  • described second closed-loop network unit 401 is also mesh-like closed structure, and the shape of its mesh also can be the shape such as circle, rhombus, hexagon, in concrete implementation, described second closed-loop
  • the network unit 401 is surrounded by a number of third short-wave poles 4011 to form a quadrilateral structure.
  • the common wave pole can be any one of the first short wave pole 4002 and the second short wave pole 4004 of the first closed-loop network unit 400, or it can be the first long wave pole 4001 and A part of any one of the second long wave rods 4003.
  • first closed-loop network unit 400 is larger than the area enclosed by the second closed-loop network unit 401 .
  • the arrangement of the first closed-loop network unit 400 with large mesh and the second closed-loop network unit 401 with small mesh can improve the embedding efficiency of thrombus and improve the efficiency of thrombus removal.
  • the area enclosed by the first closed-loop network unit 400 is 2 to 5 times the area enclosed by the second closed-loop network unit 401, preferably, the first closed-loop network unit 401
  • the area enclosed by a closed-loop network unit 400 is 2 to 4 times the area enclosed by the second closed-loop network unit 401 .
  • the number of the first closed-loop network units 400 is 1/20-1/3 of the number of the second closed-loop network units 401 .
  • the number of the first closed-loop network units 400 is 1/14 ⁇ 1/4 of the number of the second closed-loop network units 401 .
  • the slope mouth probes are respectively the first slope mouth probe 430 and the second slope mouth probe 431 .
  • the main body development 2 includes a main body development wire, and the main body development wire forms a development net unit on the path along the wave rod winding bracket body 4, and the development net unit marks the structure of the bracket and/or location.
  • the developing mesh unit in the bracket of the first embodiment is a closed geometric shape.
  • the area of the developing net unit is the same as the area of the closed-loop net unit of the support body 4 at this position, wherein the area of the developing net unit refers to the area enclosed by the main body developing wire, and the closed-loop net unit
  • Fig. 5 for example, the single area enclosed by the first main body developing wire 201 in Fig.
  • the area enclosed by the wave rods (the area enclosed by the first long wave rod 4001 , the first single lever 4002 , the second long wave rod 4003 and the second short wave rod 4004 ) is the same.
  • the developing net unit marks the special position of the bracket, and the special position is any one or more of 1/3, 1/2 or 2/3 of the total length of the bracket, and the developing net unit
  • the special position of the unit mark can provide the operator with the position and posture of the bracket, which is convenient for the operator to judge the operation.
  • the area of the developing mesh unit may also be smaller than the area of the closed-loop mesh unit of the support body 4 at this position.
  • the area of the developing mesh unit is the sum of the areas of several closed-loop mesh units at the position of the support body 4 .
  • the main body development 2 is at least one first main body development wire 201 and is attached to all the poles of at least one first closed-loop mesh unit 400 in a winding manner and attached to at least one of the first closed-loop mesh unit 400 in a winding manner. Some probes of the second closed-loop network unit 401.
  • the winding direction of the first main body developing wire 201 is from the proximal end of the stent body 4 to the distal end of the stent body 4 .
  • the first main body developing wire 201 starts to wind from the proximal end of the first bevel plug rod 430 in the direction of the arrow, and wraps three times at the first fork of the first bevel plug rod 430 in turn.
  • the first closed-loop network unit 400 then reaches the distal end of the stent body 4 .
  • the first main body developing wire 201 is wound around the first closed-loop network unit 400 in a counterclockwise direction, and the sequence of the paths wound around the first closed-loop network unit 400 is the first long-wave rod 4001 and the first short-wave rod 4002 , the second long-wave rod 4003 and the second short-wave rod 4004, wherein the first main body developing wire 201 is wound twice at the first long-wave rod 4001 and enters the next first closed-loop mesh unit 400 along the winding path.
  • the first main body developing wire 201 forms a developing mesh unit by winding all the poles around the first closed-loop mesh unit 400, and can develop the first closed-loop mesh unit 400, so as to indicate the position of the first closed-loop mesh unit 400, so as to facilitate the operation. undergo surgery.
  • next first closed-loop mesh unit 400 needs to be wound after being wound by a first closed-loop mesh unit 400
  • the first main body developing wire 201 needs to be wound around the second closed-loop mesh unit 401 A third short-wave pole 4011, so as to enter the winding path of the next first closed-loop network unit 400.
  • the winding path of the first main body developing filament 201 can be changed to obtain the following different winding paths as follows:
  • FIG. 6 shows the second winding path of the first main body developing wire 201 in the main body developing 2, wherein the first main body developing wire 201 is still wound from the proximal end of the bracket body 4 to the bracket body 4.
  • the first main body developing wire 201 starts to wind from the proximal end of the second grooved rod 431 in the direction of the arrow, and winds three times at the first bifurcation of the second sloped rod 431 in turn.
  • the first closed-loop network unit 400 then reaches the distal end of the stent body 4 .
  • the first main body developing wire 201 is wound around all the wave rods of the first closed-loop network unit 400 in a clockwise direction, and the winding sequence is the second short wave rod 4004, the second long wave rod 4003, the first short wave rod 4002 and the first long-wave rod 4001, and the first main body developing wire 201 is wound twice at the second short-wave rod 4004.
  • FIG. 7 shows a third winding path of the first main body developing wire 201 in the main body developing 2, wherein the first main body developing wire 201 is still wound from the proximal end of the bracket body 4 to the bracket body 4.
  • the first main body developing wire 201 is wound from the proximal end of the first bevel pole 430 to the middle part along the direction of the arrow, and is wound sequentially at the second bifurcation of the first bevel pole 430
  • Three first closed-loop network units 400 then reach the distal end of the stent body 4 .
  • the first main body developing wire 201 is wound around all the wave rods of the first closed-loop network unit 400 in a clockwise direction, and the winding sequence is the second long wave rod 4003, the first short wave rod 4002, the first long wave rod 4001, the second short-wave rod 4004, and the first main body developing wire 201 is wound twice at the second long-wave rod 4003.
  • FIG. 8 shows the fourth winding path of the first main body developing wire 201 in the main body developing 2, wherein the first main body developing wire 201 is still wound from the proximal end of the stent body 4 to the end of the stent body 4. At the far end, the first main body developing wire 201 is wound from the proximal end to the distal end of the second sloped pole 431 in the direction of the arrow, and is wound sequentially at the third bifurcation of the second sloped pole 431 Three first closed-loop network units 400 then reach the distal end of the stent body 4 .
  • the first main body developing wire 201 is wound around all the wave rods of the first closed-loop network unit 400 in a counterclockwise direction, and the winding sequence is the first short wave rod 4002, the second long wave rod 4003, and the second short wave rod. 4004.
  • the first long-wave rod 4001, and the first main body developing wire 201 is wound twice at the first short-wave rod 4002.
  • the main body developing 2 can also use more than one main body developing wire.
  • the main body developing 2 includes a first main body developing wire 201 and a second main body developing wire 202 , wherein the first main body developing filament 201 is wound by the first winding path of the first main body developing silk 201 shown in FIG. 5, and the second main body developing filament 202 is wound by the second winding path shown in FIG.
  • the way that the first main body developing wire 201 and the second main body developing wire 202 are superimposed enables the position of the first closed-loop mesh unit 400 to be displayed more clearly, thereby facilitating the operation for the operator.
  • the winding path of the main body developer 2 can also be any combination as shown in Figures 5 to 8, as long as it can satisfy the position of the first closed-loop network unit 400 It is shown more clearly, so that the operator can perform the operation.
  • the stent according to Embodiment 1 of the present invention may also include a distal display 1 and/or a proximal display 3, please refer to FIG. 1 , the distal display 1 is fixed on the distal end of the stent body 4, and The proximal end is fixed on the proximal end of the stent body 4 .
  • the distal development 1 is sheathed on the distal rod of the stent body 4 , wherein the distal development 1 is the first distal end
  • the developing wire 101 is wound to form at least one wrapping structure on the distal pole of the stent body 4 .
  • the first distal-end developing wire 101 is wound several times around the distal end of the stent body 4 in the direction from the proximal end to the distal end (or in the direction from the distal end to the proximal end of the stent body 4 ). Form a wrapping structure.
  • the proximal end of the distal developing device 1 is integrally or detachably connected with the distal end of the main body developing device 2, wherein when the proximal end of the distal developing device 1 is connected to When the distal end of the main body developing 2 is integrally connected, it is composed of the same developing wire.
  • the proximal end of the distal development 1 is detachably connected to the distal end of the main development 2, it can also be connected and fixed by bonding or winding.
  • the proximal end of the distal development 1 and the far end of the main development 2 The end can also be fixed by welding.
  • the remote visualization 1 and the main body visualization 2 may also be independent of each other and not connected.
  • the first distal end developing wire 101 can surround the distal wave rod of the stent body 4 from the proximal end of the stent body 4 to the distal end (or from the distal end of the stent body 4 ). Towards the proximal direction) for several turns to form a one-layer wrapping structure, and then wrap several turns along the one-layer wrapping structure to form a two-layer or more than two-layer wrapping structure.
  • the distal end imaging 1 may be fixed to the distal end of the stent body 4 by means of bonding, welding or the like.
  • proximal development 3 The specific structure of proximal development 3 is described below:
  • the proximal development 3 is connected to the proximal end of the stent body 4, wherein the proximal development 3 can be sleeved, wound, welded or bonded to the proximal end of the stent body 4 etc., the distal end of the proximal display 3 can be connected integrally or detachably with the proximal end of the main display 2 .
  • the proximal developing wire 301 is used as the proximal developing wire 301 and is wound around the proximal end of the stent body 4 .
  • the number of developing filaments in the main body developing 2, the proximal developing 3 and the distal developing 1 can all be 1-8, preferably 1-6.
  • the present invention also provides a thrombectomy system, which includes the above bracket and a push rod 5 located at the proximal end of the bracket, and the push rod 5 is arranged non-coaxially with the bracket.
  • proximal imaging 3 is arranged coaxially with the proximal end of the stent
  • distal imaging 1 is arranged coaxially with the distal pole of the stent.
  • proximal development 3, the main body development 2, and the distal development 1 are made of developable materials, and the developable materials are any one or more of tantalum, gold, platinum, platinum-iridium, and platinum-tungsten The combination.
  • the material of the stent body 4 can be any one of nickel-titanium alloy, cobalt-based alloy or stainless steel, which can be processed by cutting metal pipes.
  • the push rod 5 can be made of any one or more materials of stainless steel, cobalt-chromium-nickel alloy or nickel-titanium alloy.
  • the pushing rod and the support in the thrombectomy system may also be connected coaxially, and the proximal end imaging 3 and the proximal end of the support may also be arranged non-coaxially.
  • the distal imaging 1 and the distal probe of the stent can also be arranged non-coaxially.
  • the bracket of the second embodiment of the present invention is basically the same as that of the first embodiment, the same parts will not be described again, and only the differences will be described below.
  • main body development 2 The structure of main body development 2 is described below:
  • the developing mesh unit may be a half-open geometric shape or a closed geometric shape formed by combining half-open geometric shapes.
  • the main body developing 2 is at least one first main body developing wire 201 wound on a part of the wave rod of the first closed-loop mesh unit 400 and a part of the wave rod wound on the second closed-loop mesh unit 401 .
  • FIG. 10 shows the first winding path of the first main body developing wire 201 of the main body developing 2 in Embodiment 2 of the present invention, wherein the first main body developing wire 201 is also formed by the proximal end of the bracket body 4 Winding to the far end of the stent body 4, the first main body developing wire 201 starts from the proximal end [the first bifurcation] of the second bevel pole 431 in the direction of the arrow and winds three first closed-loop mesh units sequentially 400 then reaches the distal end of the stent body 4 .
  • the first main body developing wire 201 is wound around some wave rods of the first closed-loop network unit 400 in the counterclockwise direction, and the winding sequence is the first long wave rod 4001 , the first short wave rod 4002 and the second long wave rod 4003 .
  • the first main body developing wire 201 passes through two third short-waves successively in the second embodiment Rod 4011, so as to enter the next first closed-loop network unit 400 for winding.
  • FIG. 11 shows the second winding path of the first main body developing wire 201 in the second main body developing 2 of the present invention, wherein the first main body developing wire 201 is still wound by the proximal end of the bracket body 4
  • the first main body developing wire 201 is wound from the proximal end to the distal end of the second sloping rod 431 along the direction of the arrow, and at the third branch of the second sloping rod 431
  • the three first closed-loop network units 400 are wound around in turn and then reach the distal end of the stent body 4 .
  • the first main body developing wire 201 is wound clockwise around some wave rods of the first closed-loop network unit 400 , and the winding sequence is the first long wave rod 4001 , the second short wave rod 4004 and the second long wave rod 4003 .
  • the first main body developing wire 201 passes through two third short-waves successively in the second embodiment Rod 4011, so as to enter the next first closed-loop network unit 400 for winding.
  • the first main body developing silk 201 needs to pass through the second closed-loop mesh unit 401 and wind one of them.
  • FIG. 12 shows the third winding path of the first main body developing wire 201 in the second main body developing 2 of the present invention, wherein the first main body developing wire 201 is still wound by the proximal end of the bracket body 4 To the far end of the stent body 4, the first main body developing wire 201 is wound from the proximal end of the first bevel pole 430 in the direction of the arrow, and then reversed at the first bifurcation to wind three first closed-loop mesh units in sequence 400 then reaches the distal end of the stent body 4 .
  • the first main body developing wire 201 is wound clockwise around some wave rods of the first closed-loop network unit 400 , and the winding sequence is the second short wave rod 4004 , the second long wave rod 4003 and the first short wave rod 4002 .
  • the first main body developing wire 201 passes through a third short-wave in sequence in the second embodiment Rod 4011, so as to enter the next first closed-loop network unit 400 for winding.
  • FIG. 13 shows the fourth winding path of the first main body developing wire 201 in the second main body developing 2 of the present invention, wherein the first main body developing wire 201 is still wound by the proximal end of the bracket body 4
  • the first main body developing wire 201 is wound from the proximal end of the first beveled rod 430 to the middle part of the first beveled rod 430 along the direction of the arrow, and then waved on the first beveled rod 430.
  • the second bifurcation of the rod 430 reverses direction and wraps around the three first closed-loop mesh units 400 in sequence, and then reaches the distal end of the stent body 4 .
  • the first main body developing wire 201 is wound counterclockwise around some wave rods of the first closed-loop network unit 400 , and the winding sequence is the second short wave rod 4004 , the first long wave rod 4001 and the first short wave rod 4002 .
  • FIG. 14 shows the fifth winding path of the first main body developing wire 201 in the second main body developing 2 of the present invention, wherein the first main body developing wire 201 is still wound by the proximal end of the bracket body 4 To the far end of the stent body 4, the first main body developing wire 201 is wound from the proximal end of the second beveled rod 431 to the middle part of the second beveled rod 431 along the direction of the arrow, and then waved on the second beveled rod 431. The second bifurcation of the rod 431 reverses direction and wraps around the three first closed-loop mesh units 400 in turn to reach the distal end of the stent body 4 .
  • the first main body developing wire 201 is wound around part of the wave rods of the first closed-loop network unit 400 in the counterclockwise direction, and the winding order is to wind the first long wave rod 4001 of 1/2 length, the first short wave rod 4002 and 1/2 of the length. 2 lengths of the second long wave rod 4003.
  • the first main body developing wire 201 passes through two third short wave rods 4011 in order to facilitate entering The next first closed-loop network unit 400 performs winding. Before the first main body developing wire 201 starts to wind around the first closed-loop mesh unit 400 at the middle part of the second slope opening pole 431, the first main body developing silk 201 needs to pass through the second closed-loop mesh unit 401 and be wound therein. A third short wave rod 4011.
  • the length of the first main body developing wire 201 wound around the first long-wave rod 4001 and the second long-wave rod 4003 may also be more than 1/2 the length, which may be the length of the first long-wave rod 4001 or the 1/3 length, 1/4 length, etc. of the second long-wave rod 4003 , as long as they can be wound around the first long-wave rod 4001 and the second long-wave rod 4003 .
  • FIG. 15 shows the sixth winding path of the first main body developing filament 201 in the second main body development 2 of the present invention.
  • the sixth winding path is different from the fifth winding path above.
  • a main body developing wire 201 is wound clockwise around part of the wave rods of the first closed-loop network unit 400, and the winding sequence is the first long wave rod 4001 of 1/2 length, the second short wave rod 4004 of 1/2 length, and the second wave rod 4004 of 1/2 length.
  • Figure 16 shows a schematic diagram of the combination of the first winding path (please refer to Figure 10) and the second winding path (please refer to Figure 11) for the development of the main body in Embodiment 2 of the present invention
  • the main body Developing 2 adopts the first main body developing wire 201 and the second main body developing wire 202, wherein the first main body developing wire 201 is wound around the stent body 4 in the first winding path of the second embodiment shown in FIG. 11.
  • the second winding path of the second embodiment of 11 wraps around the stent body 4.
  • a closed-loop network unit 400 the first long-wave rod 4001 and the second long-wave rod 4003 are respectively wound by the first main body developing wire 201 and the second main body developing wire 202, and the first main body developing wire 201 and the second main body developing wire 202 are superimposed In this way, the position of the first closed-loop network unit 400 can be displayed more clearly, which is beneficial for the operator to perform the operation.
  • Figure 17 shows a schematic diagram of the combination of the fifth winding path (please refer to Figure 14) and the sixth winding path (please refer to Figure 15) for the development of the main body in Embodiment 2 of the present invention
  • the main body Developing 2 adopts the first main body developing wire 201 and the second main body developing wire 202, and the first closed-loop mesh unit 400 is enclosed by the first main body developing wire 201 and the second main body developing wire 202, so that the second main body developing wire 201
  • the position of a closed-loop network unit 400 can be clearly displayed, so that the operator can perform further operations.
  • remote imaging 1 The specific structure of remote imaging 1 is described below:
  • the distal developing wire 1 is a second distal developing wire 102 and a third distal end connected to the second distal developing wire 102
  • the developing wire 103 wherein the second distal developing wire 102 is wound several times on the arc portion 411 of the distal end 41 of the stent body 4 to obtain an axial ring, and at the distal end of the second distal developing wire 102 That is, the outer side of the tail of the axial ring is connected to the proximal end of the third distal developing wire 103 , and the third distal developing wire 103 is wound around the outer side of the axial ring along the circumferential direction to form a circumferential ring.
  • the stent of the third embodiment of the present invention is basically the same as the first or second embodiment, and the same parts will not be described again, and only the differences will be described below.
  • main body development 2 The structure of main body development 2 is described below:
  • the main body development 2 adopts the first main body development filament 201 and the second main body development filament 202 , wherein the first main body development filament 201 is wound according to the second winding path of the main body development in the second embodiment of FIG.
  • the second body developing wire 202 is wound from the proximal end of the stent body 4 to the distal end of the stent body 4 in a helical path, wherein the first short-wave rod 4002 in the first closed-loop mesh unit 400 is not developed by the first body in this embodiment
  • the wire 201 is wound, but the first short-wave rod 4002 is wound by the second main body developing wire 202, so that the first closed-loop mesh unit 400 is surrounded and wound by the first main body developing wire 201 and the second main body developing wire 202, the The superposition of the first main body developing wire 201 and the second main body developing wire 202 enables the position of the first closed-loop mesh unit 400 to be clearly indicated, thereby facilitating the operation for the operator.
  • the main body development 2 adopts a first main body developing wire 201 and a second main body developing wire 202 , wherein the first main body developing wire 201 is according to the first embodiment shown in FIG. 6
  • the second winding path of the main body development 2 is wound, and the second main body development wire 202 is wound from the proximal end of the stent body 4 to the distal end of the stent body 4 in a helical path.
  • first closed-loop mesh unit 400 Wound around the first main body developing wire 201, and the second main body developing wire 202 is repeatedly wound at the first short-wave rod 4002, the superposition of the first main body developing wire 201 and the second main body developing wire 202 makes the first closed-loop mesh unit
  • the position of 400 can be displayed more clearly, which is beneficial for the operator to perform the operation.
  • the second main body developing wire 202 is the same as the second main body developing wire 202 in FIG. 19 from the proximal end of the stent body 4 to the stent body in a spiral path. 4, the first main body developing wire 201 is wound according to the first winding path of the main body developing 2 in the first embodiment in FIG. 5 .
  • the main body development 2 can use three main body development filaments, namely the first main body development filament 201 , the second main body development filament 202 and the third main body development filament 203 , wherein , the first main body developing wire 201 is also wound according to the first winding path of the main body development in the first embodiment of FIG.
  • the main body developing filament 2 may include 1 to 8 main developing filaments. any combination.
  • the distal development 1 also adopts the first distal development filament 101 , wherein the first distal development filament 101 is wound several times in a tight manner and wraps around the distal end of the stent body 4 .
  • An axial ring is formed on the arc portion 411 of 41 , wherein the inner surface of the axial ring is in contact with the outer side of the arc portion 411 .

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Abstract

支架及包含该支架的取栓系统,其中支架包括支架本体(4)和显影结构,支架本体(4)为由至少一个闭环网单位(400,401)相互耦合成型,闭环网单位(400,401)由波杆围合构成,显影结构包括主体显影(2),主体显影(2)具有至少一主体显影丝(201,202,203),主体显影丝(201,202,203)沿着波杆缠绕支架本体(4)的至少部分。取栓系统包括如上述支架及设置于支架近端的推送杆(5)。通过上述设置使支架本体(4)上可以明确第一闭环网单元(400)和第二闭环网单元(401)的位置,便于术者判断支架本体(4)的位置,为术者判断支架的位置提供更多的信息,且进一步提高了支架本体(4)的可视性。

Description

支架及取栓系统 技术领域
本发明涉及医疗器械技术领域,尤其涉及支架及包含该支架的取栓系统。
背景技术
卒中又称中风,脑卒中是一种以脑组织缺血及出血性损伤症状为主要临床表现的急性脑血管疾病。2018年发布的《中国脑卒中防治报告》指出,我国脑卒中呈现出高发病率、高致残率、高死亡率、高复发率、高经济负担五大特点。脑卒中已经成为我国国民第一死亡病因,平均每12秒就有一人发生脑卒中,每21秒就有一人死于脑卒中。据2016年综合标化患病率测算,全国每年死于脑卒中的患者高达196万,幸存者中70%留有不同程度的永久性残疾。在所有的脑卒中患者中,急性缺血性卒中约占70%~80%,其救治关键是在脑组织因缺血发生永久性损伤前尽快恢复脑血流、降低继发性脑损害。目前治疗急性缺血性卒中的治疗方法主要有两大类,药物溶栓和机械取栓。
动、静脉药物溶栓是急性缺血性卒中治疗的常规方法,尽管已经显示出能够较好的改善神经系统的预后,但是药物溶栓仍面临一些问题。首先是溶栓时间窗短,静脉溶栓应在发病3小时内进行,动脉溶栓的时间窗只有6小时,而极短的时间窗导致只有很少的患者能够接受溶栓治疗;其次,药物溶栓的血管再通时间长,血管再通时间可能是影响临床预后的重要因素,而动、静脉溶栓的血管再通时间至少需要1~2小时;再次,溶栓治疗只适合于体积较小的血栓,对于严重的大血管闭塞所致急性缺血性卒中血管再通率低;最后,有一些患者不适用于溶栓治疗。
为了解决上述药物溶栓的问题,采用机械的方式消除血栓成了近些年研究的热点。动脉机械取栓装置因为具有以下诸多优点而获得了广泛的关注:快速血 管再通,更长的卒中介入时间窗和更低的出血率,特别对于大血管闭塞所致的急性缺血性卒中血管再通有着令人满意的临床效果。
目前,现有的机械取栓通常采用颅内取栓装置,颅内取栓装置通常为采用激光切割加工技术制得的金属支架,但这些金属支架还有很多待解决的问题,其中一个主要问题是金属支架上设置成组的显影点或显影丝,在X射线下只能显示金属支架在手术中的定位或轮廓,无法完全展示激光切割金属支架的所有金属杆,医生在X射线下无法判断取栓装置主体的释放与局部膨胀情况,只有从人体内取出取栓装置后才能观察是否拉取到血栓,不利于医生手术过程中的判断,浪费了宝贵的治疗时间。
为了改进显影的问题,市面上也出现一种用于血管的取栓装置,该种取栓装置除了在支架远端设置多个显影点外,在支架主体上也分段设置多组标记点,利用该标记点可以帮助操作的医生确定取栓装置在血管内的位置与方向。但上述取栓装置的显影效果也远未达到最佳状态。
发明内容
针对上述现有技术的缺点,本发明的目的是提供支架及包含该支架的取栓系统,以解决现有技术中的一个或多个问题。
为实现上述目的,本发明的技术方案如下:
支架,所述支架包括支架本体和显影结构,所述支架本体为由至少一个闭环网单位相互耦合成型,所述闭环网单位由波杆围合构成,所述显影结构包括主体显影,所述主体显影具有至少一主体显影丝,所述主体显影丝沿着波杆缠绕支架本体的至少部分。
进一步的,所述主体显影丝螺旋缠绕所述波杆。
进一步的,所述主体显影丝沿所述支架本体的近端向远端排布或沿所述支架本体的远端向近端排布。
进一步的,所述主体显影丝在沿着所述波杆缠绕支架本体的路径上形成显影网单元,所述显影网单元标记所述支架的结构和/或位置。
进一步的,所述显影网单元为闭合的几何形状;
或者,
所述显影网单元为半开的几何形状。
进一步的,所述显影网单元的面积与所述支架本体在该位置的所述闭环网单位的面积相同;
或者,
所述显影网单元的面积小于所述支架本体在该位置的所述闭环网单位的面积;
再或者,
所述显影网单元的面积为所述支架本体在该位置的若干个所述闭环网单位的面积之和。
进一步的,所述闭环网单位包括至少一第一闭环网单元和至少一第二闭环网单元,所述第一闭环网单元围合的面积大于所述第二闭环网单元围合的面积。
进一步的,所述第一闭环网单元围合的面积为所述第二闭环网单元围合的面积的2~5倍。
进一步的,所述第一闭环网单元的数量为所述第二闭环网单元的数量的1/20~1/3。
进一步的,所述主体显影丝以缠绕的方式附着于至少一所述第一闭环网单元,以用于使所述支架本体上可显影出至少一所述第一闭环网单元。
所述主体显影丝缠绕于至少一所述第一闭环网单元的全部波杆以及缠绕于至少一所述第二闭环网单元的部分波杆。
进一步的,至少一所述第一闭环网单元具有部分波杆被所述主体显影丝缠绕至少两次。
进一步的,所述主体显影丝缠绕于至少一所述第一闭环网单元的部分波杆以及缠绕于至少一所述第二闭环网单元的部分波杆。
进一步的,所述主体显影丝的数量为至少两根,其中一根所述主体显影丝缠绕于至少一所述第一闭环网单元的部分波杆以及缠绕于至少一所述第二闭环网单元的部分波杆,另一根所述主体显影丝缠绕于至少一所述第一闭环网单元 的剩余波杆以及缠绕于至少一所述第二闭环网单元的部分波杆。
进一步的,所述主体显影丝的数量为1~8根。
进一步的,所述显影结构还包括远端显影,所述远端显影连接于所述支架本体的远端。
进一步的,所述远端显影的近端与所述主体显影的远端一体连接或可拆卸地连接。
进一步的,所述远端显影为第一远端显影丝以缠绕的方式在所述支架本体的远端波杆形成至少一层包裹结构。
进一步的,所述远端显影为第二远端显影丝,所述第二远端显影丝以缠绕的方式围绕所述支架本体的远端波杆形成的轴向环以及围绕所述轴向环外侧缠绕形成的周向环。
进一步的,所述远端显影与所述支架本体近端同轴或非同轴。
进一步的,所述显影结构还包括近端显影,所述近端显影连接于所述支架本体的近端。
进一步的,所述近端显影的远端与所述主体显影的近端一体连接或可拆卸地连接。
进一步的,所述近端显影与所述支架本体远端同轴或非同轴。
此外,本发明还提供一种取栓系统,所述取栓系统包括上述支架及设置于所述支架近端的推送杆,所述推送杆与所述支架同轴或非同轴设置。
与现有技术相比,本发明的有益技术效果如下:
(一)本发明所述支架包括支架本体以及显影结构,支架本体由至少一个闭环网单位相互耦合成型,显影结构包括至少一主体显影丝,所述主体显影丝沿着波杆缠绕支架本体的至少部分,其中主体显影丝沿着所述波杆螺旋缠绕的路径上形成显影网单元。通过上述设置使所述显影网单元标记所述支架的结构和/或位置,便于术者判断支架本体的位置,为术者判断支架的位置提供更多的信息,且进一步提高了支架本体的可视性。
(二)进一步的,支架本体中第一闭环网单元和第二闭环网单元均是由波杆围合构成,其中第一闭环网单元的围合面积大于所述第二闭环网单元,使得 可以提高血栓的嵌入效率以及提高取栓效率。
(三)进一步的,在所述支架本体上还分别设置近端显影、远端显影,结合主体显影随时所述支架本体可以实现全显影效果,使的术者可以在术中实现支架本体的全身显影。
附图说明
图1示出了本发明支架及包含该支架的取栓系统的展开结构示意图。
图2示出了本发明实施例支架及包含该支架的取栓系统中支架的结构示意图。
图3示出了本发明实施例支架及包含该支架的取栓系统中闭环网单元的结构示意图。
图4示出了本发明实施例支架及包含该支架的取栓系统中显影网单元与闭环网单位的面积关系示意图。
图5示出了本发明实施例一支架及包含该支架的取栓系统中主体显影的第一种缠绕路径示意图。
图6示出了本发明实施例一支架及包含该支架的取栓系统中主体显影的第二种缠绕路径示意图。
图7示出了本发明实施例一支架及包含该支架的取栓系统中主体显影的第三种缠绕路径示意图。
图8示出了本发明实施例一支架及包含该支架的取栓系统中主体显影的第四种缠绕路径示意图。
图9示出了本发明实施例一支架及包含该支架的取栓系统中主体显影第一缠绕路径和第二缠绕路径组合的缠绕示意图。
图10示出了本发明实施例二支架及包含该支架的取栓系统中主体显影的第一种缠绕路径示意图。
图11示出了本发明实施例二支架及包含该支架的取栓系统中主体显影的第二种缠绕路径示意图。
图12示出了本发明实施例二支架及包含该支架的取栓系统中主体显影的 第三种缠绕路径示意图。
图13示出了本发明实施例二支架及包含该支架的取栓系统中主体显影的第四种缠绕路径示意图。
图14示出了本发明实施例二支架及包含该支架的取栓系统中主体显影的第五种缠绕路径示意图。
图15示出了本发明实施例二支架及包含该支架的取栓系统中主体显影的第六种缠绕路径示意图。
图16示出了本发明实施例二支架及包含该支架的取栓系统中主体显影第一种缠绕路径和第二种缠绕路径组合的示意图。
图17示出了本发明实施例二支架及包含该支架的取栓系统中主体显影第五缠绕路径和第六缠绕路径组合的缠绕示意图。
图18示出了本发明实施例三支架及包含该支架的取栓系统中主体显影的第一种缠绕路径示意图。
图19示出了本发明实施例三支架及包含该支架的取栓系统中主体显影的第二种缠绕路径示意图。
图20示出了本发明实施例三支架及包含该支架的取栓系统中主体显影的第三种缠绕路径示意图。
图21示出了本发明实施例三支架及包含该支架的取栓系统中主体显影的第四种缠绕路径示意图。
图22示出了本发明实施例支架及包含该支架的取栓系统中远端显影的第一种结构示意图。
图23示出了本发明实施例支架及包含该支架的取栓系统中远端显影在右视的剖面图。
图24示出了本发明实施例支架及包含该支架的取栓系统中远端显影在前视的剖面图。
图25示出了本发明实施例支架及包含该支架的取栓系统中远端显影的第二种结构示意图。
图26示出了本发明实施例支架及包含该支架的取栓系统中远端显影的第 二种结构的轴测图。
图27示出了本发明实施例支架及包含该支架的取栓系统中远端显影的第二种结构的上视图。
图28示出了本发明实施例支架及包含该支架的取栓系统中远端显影的第二种结构的前视图。
图29示出了本发明实施例支架及包含该支架的取栓系统中远端显影的第二种结构的上视图。
图30示出了本发明实施例支架及包含该支架的取栓系统中远端显影的第三种结构示意图。
图31示出了本发明实施例支架及包含该支架的取栓系统中近端显影的结构示意图。
附图中标记:1、远端显影;101、第一远端显影丝;102、第二远端显影丝;103、第三远端显影丝;2、主体显影;201、第一主体显影丝;202、第二主体显影丝;203、第三主体显影丝;3、近端显影;301、近端显影丝;4、支架本体;41、远端部;411、弧形部;42、中间部;43、近端部;430、第一斜坡口波杆;431、第二斜坡口波杆;400、第一闭环网单元;4001、第一长波杆;4002、第一短波杆;4003、第二长波杆;4004、第二短波杆;401、第二闭环网单元;4011、第三短波杆;5、推送杆。
具体实施方式
为了使本发明的目的、技术方案及优点更加清楚明白,以下结合附图和具体实施方式对本发明提出的支架及包含该支架的取栓系统作进一步详细说明。根据下面说明,本发明的优点和特征将更清楚。需要说明的是,附图采用非常简化的形式且均使用非精准的比例,仅用以方便、明晰地辅助说明本发明实施方式的目的。为了使本发明的目的、特征和优点能够更加明显易懂,请参阅附图。须知,本说明书所附图式所绘示的结构、比例、大小等,均仅用以配合说明书所揭示的内容,以供熟悉此技术的人士了解与阅读,并非用以限定本发明实施的限定条件,故不具技术上的实质意义,任何结构的修饰、比例关系的改 变或大小的调整,在不影响本发明所能产生的功效及所能达成的目的下,均应仍落在本发明所揭示的技术内容能涵盖的范围内。
如在本说明书和所附权利要求书中所使用的,单数形式“一”、“一个”以及“该”包括复数对象,除非内容另外明确指出外,术语“近端”通常是靠近操作者的一端,术语“远端”通常是靠近患者病变部位的一端。以图1为例,图1的左边为远端,图1的右边为近端。
实施例一:
下面描述支架的具体结构如下:
请参考图1和图2,所述支架包括支架本体4和显影结构。
所述支架本体4为由至少一个闭环网单位相互耦合形成筒状结构但不限于仅是筒状结构,在本发明的其他实施例中其可耦合形成球形结构、楔形结构、纺锤形结构、或其他不规则体中的任意一种或多种的组合,所述闭环网单位由波杆围合构成。
所述显影结构包括主体显影2,所述主体显影2包括至少一主体显影丝,所述主体显影丝沿着所述波杆缠绕所述支架本体4的至少部分,优选的,所述主体显影丝螺旋缠绕于所述波杆,并且所述主体显影丝在本实施例一所述支架中沿所述支架本体4的近端向远端排布。
相应的,在本发明的其他实施例中,所述主体显影丝也可沿所述支架本体4的远端向近端排布,对此本发明不作限制。
下面描述支架本体4的具体结构如下:
请继续参考图1和图2,所述支架本体4可以沿纵轴周向自体膨胀,所述支架本体4包括依次连接的远端部41、中间部42以及近端部43。上述闭环网单位包括至少一第一闭环网单元400和至少一第二闭环网单元401。
具体的,上述第一闭环网单元400为大网孔设计,该设计使得支架本体4 在血栓中间打开时能有效嵌入血栓内部,不易把血栓切碎或切割成小形块状,便于把血栓完整取出。请参考图3,所述第一闭环网单元400可以是普通的网眼状闭合结构,该网眼的形状可以是圆形、菱形、六边形等形状。在具体实施时,为了进一步增加支架本体4的整体螺旋结构的柔顺性和贴壁性,所述第一闭环网单元400包括两根互相平行的第一长波杆4001和第二长波杆4003、以及两根互相平行的第一短波杆4002和第二短波杆4004,其中第一长波杆4001、第二长波杆4003、第一短波杆4002和第二短波杆4004围合构成类四边形结构。
进一步的,所述第二闭环网单元401为小网孔设计,该设计使得支架本体4在释放过程中抓捕血栓时可以产生较大的径向支撑力,当支架本体4回撤时有利于拖动血栓,且在回撤过程中血栓不易脱落。请参考图2和图3,所述第二闭环网单元401也是网眼状闭合结构,其网眼的形状也可以是圆形、菱形、六边形等形状,在具体实施时,所述第二闭环网单元401是由若干第三短波杆4011围合构成类四边形结构。当然若所述第二闭环网单元401与第一闭环网单元400相邻,请参考图1和图2,所述第二闭环网单元401会和所述第一闭环网单元400共用一根波杆或共用一根波杆的一部分,该共用波杆可以是第一闭环网单元400的第一短波杆4002和第二短波杆4004中的任意一根,或者,可以是第一长波杆4001和第二长波杆4003中的任意一根的一部分。
进一步的,所述第一闭环网单元400围合的面积大于所述第二闭环网单元401围合的面积。上述大网孔第一闭环网单元400以及小网孔第二闭环网单元401的设置可以提高血栓的嵌入效率及提高取栓效率。
进一步的,在本实施例一所述支架中,所述第一闭环网单元400围合的面积为所述第二闭环网单元401围合的面积的2~5倍,优选的,所述第一闭环网单元400围合的面积为所述第二闭环网单元401围合的面积的2~4倍。
进一步的,在本实施例一所述支架中,所述第一闭环网单元400的数量为所述第二闭环网单元401的数量的1/20~1/3。优选的,所述第一闭环网单元400的数量为所述第二闭环网单元401的数量的1/14~1/4。
进一步的,请参考图2,在所述支架本体4的近端部43处还包括与所述支架本体4的轴线呈一定角度布置的斜坡口波杆,在本发明实施例一所述支架中, 斜坡口波杆分别为第一斜坡口波杆430和第二斜坡口波杆431。
下面描述主体显影2的具体结构如下:
请参考图1,所述主体显影2包括主体显影丝,所述主体显影丝在沿着所述波杆缠绕支架本体4的路径上形成显影网单元,所述显影网单元标记所述支架的结构和/或位置。
进一步的,本实施例一所述支架中所述显影网单元为闭合的几何形状。其中所述显影网单元的面积与所述支架本体4在该位置的所述闭环网单位的面积相同,其中所述显影网单元的面积是指主体显影丝围合的面积,所述闭环网单位的面积具体是指波杆围合的面积。例如请参考图5,图5中第一主体显影丝201围合的单个面积即为显影网单元的面积,该显影网单元的面积与支架本体4在该位置的所述闭环网单位的面积即波杆围合的面积(第一长波杆4001、第一单拨杆4002、第二长波杆4003、第二短波杆4004围合的面积)是相同的。
进一步的,所述显影网单元标记所述支架的特殊位置,所述特殊位置为所述支架总长度的1/3或1/2或2/3中的任意一种或多种,通过显影网单元标记特殊位置可以为术者提供支架位置及姿态,便于术者判断操作。
当然,在本发明的其他实施例中,所述显影网单元的面积也可以小于所述支架本体4在该位置的所述闭环网单位的面积。再或者,请参考图4所示,所述显影网单元的面积为所述支架本体4在该位置的若干个所述闭环网单位的面积之和。
请参考图5,所述主体显影2为至少一根第一主体显影丝201并且以缠绕的方式附着于至少一第一闭环网单元400的全部波杆以及以缠绕的方式附着于至少一所述第二闭环网单元401的部分波杆。
进一步的,请继续参考图5,所述第一主体显影丝201的缠绕方向为由支架本体4的近端向支架本体4的远端缠绕。具体的,所述第一主体显影丝201沿箭头方向从第一斜坡口波杆430的近端开始缠绕,在所述第一斜坡口波杆430的第一分叉处换向依次缠绕三个第一闭环网单元400之后到达支架本体4的远 端。具体的,所述第一主体显影丝201沿逆时针方向缠绕所述第一闭环网单元400一圈,其缠绕第一闭环网单元400的路径顺序是第一长波杆4001、第一短波杆4002、第二长波杆4003以及第二短波杆4004,其中所述第一主体显影丝201在第一长波杆4001处缠绕两次并沿缠绕路径进入下一第一闭环网单元400。所述第一主体显影丝201通过围绕第一闭环网单元400的全部波杆缠绕形成显影网单元,可以显影出第一闭环网单元400,便于表明第一闭环网单元400的位置,以便于术者进行手术。
进一步的,请继续参考图5,当由一第一闭环网单元400缠绕后需要缠绕下一第一闭环网单元400时,所述第一主体显影丝201需要缠绕第二闭环网单元401中的一根第三短波杆4011,以便于进入下一个第一闭环网单元400的缠绕路径。
相应的,在本发明的其他实施例中,所述第一主体显影丝201的缠绕路径可以更改以得到以下不同的缠绕路径如下:
请参考图6,图6示出了主体显影2中第一主体显影丝201的第二种缠绕路径,其中所述第一主体显影丝201还是由支架本体4的近端缠绕至支架本体4的远端,所述第一主体显影丝201沿箭头方向从第二斜坡口波杆431的近端开始缠绕,在所述第二斜坡口波杆431的第一分叉处换向依次缠绕三个第一闭环网单元400之后到达支架本体4的远端。具体的,所述第一主体显影丝201沿顺时针方向缠绕第一闭环网单元400的全部波杆一圈,其缠绕顺序依次为第二短波杆4004、第二长波杆4003、第一短波杆4002以及第一长波杆4001,并且所述第一主体显影丝201在第二短波杆4004处缠绕两次。
请参考图7,图7示出了主体显影2中第一主体显影丝201的第三种缠绕路径,其中所述第一主体显影丝201还是由支架本体4的近端缠绕至支架本体4的远端,所述第一主体显影丝201沿箭头方向从第一斜坡口波杆430的近端向中间部分缠绕,在所述第一斜坡口波杆430的第二分叉处换向依次缠绕三个第一闭环网单元400之后到达支架本体4的远端。具体的,所述第一主体显影丝201沿顺时针方向缠绕第一闭环网单元400的全部波杆一圈,其缠绕顺序依 次为第二长波杆4003、第一短波杆4002、第一长波杆4001、第二短波杆4004,并且所述第一主体显影丝201在第二长波杆4003处缠绕两次。
请参考图8,图8示出了主体显影2中第一主体显影丝201的第四种缠绕路径,其中所述第一主体显影丝201还是由支架本体4的近端缠绕至支架本体4的远端,所述第一主体显影丝201沿箭头方向从第二斜坡口波杆431的近端向远端缠绕,在所述第二斜坡口波杆431的第三分叉处换向依次缠绕三个第一闭环网单元400之后到达支架本体4的远端。具体的,所述第一主体显影丝201沿逆时针方向缠绕第一闭环网单元400的全部波杆一圈,其缠绕顺序依次为第一短波杆4002、第二长波杆4003、第二短波杆4004、第一长波杆4001,并且所述第一主体显影丝201在第一短波杆4002处缠绕两次。
请参考图9,在本发明的其他实施例中,所述主体显影2也可以采用不止一根主体显影丝,在图9中主体显影2包括第一主体显影丝201和第二主体显影丝202,其中第一主体显影丝201以图5所示第一主体显影丝201的第一种缠绕路径进行缠绕,第二主体显影丝202以图6所示第二种缠绕路径进行缠绕,该种第一主体显影丝201和第二主体显影丝202叠加的方式使得第一闭环网单元400的位置可以更清楚的被表明,从而有利于术者进行手术。
相应的,在本发明的其他实施例中,所述主体显影2的缠绕路径也可以是如图5至图8中任意多种的组合,其只要可以满足使第一闭环网单元400的位置可以更清楚的被表明,以便于术者进行手术。
进一步的,本发明实施例一所述支架还可以包括远端显影1和/或近端显影3,请参考图1,所述远端显影1固定于所述支架本体4的远端,所述近端显影固定于所述支架本体4的近端。
下面描述远端显影1的具体结构:
请参考图22至图24,在本发明实施例一所述支架中,所述远端显影1套设于支架本体4的远端波杆,其中,所述远端显影1为第一远端显影丝101以缠绕的方式在所述支架本体4的远端波杆形成至少一层包裹结构。具体的,在 本发明实施例一中,所述第一远端显影丝101围绕支架本体4的远端自近端向远端方向(或支架本体4的远端向近端方向)缠绕数圈形成一层包裹结构。
进一步的,请参考图1、图22至图24,所述远端显影1的近端与主体显影2的远端一体连接或可拆卸地连接,其中当所述远端显影1的近端与主体显影2的远端一体连接时其为同一根显影丝构成。当所述远端显影1的近端与主体显影2的远端可拆卸地连接也可以采用粘接、缠绕的方式进行连接固定,当然所述远端显影1的近端与主体显影2的远端也可以采用焊接的方式进行固定。在一些实施例中,远端显影1与主体显影2也可以相互独立不连接。
当然,在本发明的其他实施例中,所述第一远端显影丝101可以围绕支架本体4的远端波杆自支架本体4的近端向远端方向(或自支架本体4的远端向近端方向)缠绕数圈形成一层包裹结构之后再沿所述一层包裹结构缠绕数圈形成二层或二层以上的包裹结构。
进一步的,在本发明的其他实施例中,所述远端显影1可以用粘接、焊接等方式固定于支架本体4的远端。
下面描述近端显影3的具体结构:
请参考图1和图31,所述近端显影3连接于所述支架本体4的近端,其中所述近端显影3可与支架本体4的近端采用套接、缠绕、焊接或粘接等方式固定,所述近端显影3的远端可与主体显影2的近端一体连接或可拆卸地连接。本发明实施例一所述支架中,上述近端显影3采用近端显影丝301并以缠绕的方式绕接于支架本体4的近端。
进一步的,上述主体显影2、近端显影3和远端显影1中显影丝的数量都可以为1~8根,优选数量为1~6根。
相应的,本发明还提供一种取栓系统,所述取栓系统包括上述支架以及位于所述支架近端的推送杆5,所述推送杆5与所述支架非同轴设置。
进一步的,所述近端显影3与所述支架的近端同轴设置,所述远端显影1与所述支架的远端波杆同轴设置。
进一步的,所述近端显影3、主体显影2以及远端显影1采用可显影材料制成,所述可显影材料为钽、金、铂、铂铱、铂钨中的任意一种或多种的组合。
进一步的,所述支架本体4的材料可以为镍钛合金、钴基合金或不锈钢中的任意一种,其可以通过切割金属管材的方式加工。
进一步的,所述推送杆5可以采用不锈钢、钴铬镍合金或镍钛合金中的任意一种或多种材料制成。
当然,在本发明的其他实施例中,所述取栓系统中推送杆与支架也可以是同轴连接,所述近端显影3与所述支架的近端也可以非同轴设置,所述远端显影1与所述支架的远端波杆也可以非同轴设置。
实施例二:
本发明施例二的支架与实施例一基本相同,对于相同部分不再叙述,以下仅针对不同点进行描述。
下面描述主体显影2的结构:
在本实施例二所述支架中,所述显影网单元可以为半开的几何形状或者由半开的几何形状组合而成的闭合的几何形状。具体的,所述主体显影2为至少一根第一主体显影丝201缠绕于所述第一闭环网单元400的部分波杆以及缠绕于第二闭环网单元401的部分波杆。
请参考图10,图10示出了本发明实施例二中主体显影2的第一主体显影丝201的第一种缠绕路径,其中所述第一主体显影丝201还是由支架本体4的近端缠绕至支架本体4的远端,所述第一主体显影丝201沿箭头方向从第二斜坡口波杆431的近端【第一分叉处】开始换向依次缠绕三个第一闭环网单元400之后到达支架本体4的远端。具体的,第一主体显影丝201沿逆时针方向缠绕第一闭环网单元400的部分波杆,其缠绕顺序依次为第一长波杆4001、第一短波杆4002以及第二长波杆4003。
请继续参考图10,当由一第一闭环网单元400缠绕后需要缠绕下一第一闭环网单元400时,所述第一主体显影丝201在本实施例二中依次经过两条第三 短波杆4011,以便于进入下一个第一闭环网单元400进行缠绕。
请参考图11,图11示出了本发明实施例二主体显影2中第一主体显影丝201的第二种缠绕路径,其中所述第一主体显影丝201还是由支架本体4的近端缠绕至支架本体4的远端,所述第一主体显影丝201沿箭头方向从第二斜坡口波杆431的近端向远端缠绕,在所述第二斜坡口波杆431的第三分叉处换向依次缠绕三个第一闭环网单元400之后到达支架本体4的远端。具体的,第一主体显影丝201沿顺时针方向缠绕第一闭环网单元400的部分波杆,其缠绕顺序依次为第一长波杆4001、第二短波杆4004以及第二长波杆4003。
请继续参考图11,当由一第一闭环网单元400缠绕后需要缠绕下一第一闭环网单元400时,所述第一主体显影丝201在本实施例二中依次经过两条第三短波杆4011,以便于进入下一个第一闭环网单元400进行缠绕。所述第一主体显影丝201在第一斜坡口波杆430的远端开始缠绕第一闭环网单元400之前,所述第一主体显影丝201需要经过第二闭环网单元401并缠绕其中的一根第三短波杆4011。
请参考图12,图12示出了本发明实施例二主体显影2中第一主体显影丝201的第三种缠绕路径,其中所述第一主体显影丝201还是由支架本体4的近端缠绕至支架本体4的远端,所述第一主体显影丝201沿箭头方向从第一斜坡口波杆430的近端缠绕,然后在第一分叉处换向依次缠绕三个第一闭环网单元400之后到达支架本体4的远端。具体的,第一主体显影丝201沿顺时针方向缠绕第一闭环网单元400的部分波杆,其缠绕顺序依次为第二短波杆4004、第二长波杆4003以及第一短波杆4002。
请继续参考图12,当由一第一闭环网单元400缠绕后需要缠绕下一第一闭环网单元400时,所述第一主体显影丝201在本实施例二中依次经过一根第三短波杆4011,以便于进入下一个第一闭环网单元400进行缠绕。
请参考图13,图13示出了本发明实施例二主体显影2中第一主体显影丝201的第四种缠绕路径,其中所述第一主体显影丝201还是由支架本体4的近 端缠绕至支架本体4的远端,所述第一主体显影丝201沿箭头方向从第一斜坡口波杆430的近端缠绕至第一斜坡口波杆430的中间部分,然后在第一斜坡口波杆430的第二分叉处换向依次缠绕三个第一闭环网单元400之后到达支架本体4的远端。具体的,第一主体显影丝201沿逆时针方向缠绕第一闭环网单元400的部分波杆,其缠绕顺序依次为第二短波杆4004、第一长波杆4001以及第一短波杆4002。
请参考图14,图14示出了本发明实施例二主体显影2中第一主体显影丝201的第五种缠绕路径,其中所述第一主体显影丝201还是由支架本体4的近端缠绕至支架本体4的远端,所述第一主体显影丝201沿箭头方向从第二斜坡口波杆431的近端缠绕至第二斜坡口波杆431的中间部分,然后在第二斜坡口波杆431的第二分叉处换向依次缠绕三个第一闭环网单元400之后到达支架本体4的远端。具体的,第一主体显影丝201沿逆时针方向缠绕第一闭环网单元400的部分波杆,其缠绕顺序依次为缠绕1/2长度的第一长波杆4001、第一短波杆4002以及1/2长度的第二长波杆4003。
请继续参考图14,当由一第一闭环网单元400缠绕后需要缠绕下一第一闭环网单元400时,所述第一主体显影丝201依次经过两条第三短波杆4011,以便于进入下一个第一闭环网单元400进行缠绕。所述第一主体显影丝201在第二斜坡口波杆431的中间部分开始缠绕第一闭环网单元400之前,所述第一主体显影丝201需要经过第二闭环网单元401并缠绕于其中的一根第三短波杆4011。
相应的,在本发明的其他实施例中,所述第一主体显影丝201缠绕第一长波杆4001、和第二长波杆4003的长度也可以不止1/2长度,其可以是第一长波杆4001或第二长波杆4003的1/3长度、1/4长度等,其只要满足可以缠绕第一长波杆4001和第二长波杆4003即可。
请参考图15,图15示出了本发明实施例二主体显影2中第一主体显影丝201的第六种缠绕路径,该第六种缠绕路径与上述第五种缠绕路径不同的是, 第一主体显影丝201沿顺时针方向缠绕第一闭环网单元400的部分波杆,其缠绕顺序依次为缠绕1/2长度的第一长波杆4001、第二短波杆4004以及1/2长度的第二长波杆4003。
请参考图16,图16示出了本发明实施例二中主体显影第一种缠绕路径(请参考图10)和第二种缠绕路径(请参考图11)组合的示意图,在图16中主体显影2采用第一主体显影丝201和第二主体显影丝202,其中第一主体显影丝201以图10所述实施例二第一种缠绕路径缠绕支架本体4,第二主体显影丝202以图11所述实施例二第二种缠绕路径缠绕支架本体4,在该图16中所述第一闭环网单元400被所述第一主体显影丝201和第二主体显影丝202围合,其中第一闭环网单元400中第一长波杆4001、第二长波杆4003分别被第一主体显影丝201和第二主体显影丝202缠绕,该种第一主体显影丝201和第二主体显影丝202叠加的方式使得第一闭环网单元400的位置可以更清楚的被表明,从而有利于术者进行手术。
请参考图17,图17示出了本发明实施例二中主体显影第五种缠绕路径(请参考图14)和第六种缠绕路径(请参考图15)组合的示意图,在图17中主体显影2采用第一主体显影丝201和第二主体显影丝202,通过所述第一主体显影丝201与所述第二主体显影丝202将所述第一闭环网单元400围合,以使得第一闭环网单元400的位置可以清楚的被显示,以便于术者进一步手术。
下面描述远端显影1的具体结构如下:
请参考图25至图29,在本发明实施例二所述支架中,所述远端显影1为第二远端显影丝102以及与所述第二远端显影丝102连接的第三远端显影丝103,其中第二远端显影丝102在所述支架本体4远端部41的弧形部411上进行缠绕数圈得到轴向环,在所述第二远端显影丝102的远端即所述轴向环的尾部外侧连接上第三远端显影丝103的近端,所述第三远端显影丝103在轴向环的外侧沿圆周方向缠绕得到周向环。
实施例三:
本发明施例三的支架与实施例一或实施例二基本相同,对于相同部分不再叙述,以下仅针对不同点进行描述。
下面描述主体显影2的结构:
请参考图18,所述主体显影2采用第一主体显影丝201和第二主体显影丝202,其中第一主体显影丝201按照图11实施例二中主体显影的第二种缠绕路径缠绕,而第二主体显影丝202以螺旋线路径从支架本体4的近端向支架本体4的远端缠绕,其中在该实施例中第一闭环网单元400中第一短波杆4002未被第一主体显影丝201缠绕,但该第一短波杆4002被第二主体显影丝202缠绕,使所述第一闭环网单元400被所述第一主体显影丝201和第二主体显影丝202围合缠绕,该种第一主体显影丝201和第二主体显影丝202叠加的方式使得第一闭环网单元400的位置可以清楚的被表明,从而有利于术者进行手术。
进一步的,请参考图19,在本发明的其他实施例中,所述主体显影2采用第一主体显影丝201和第二主体显影丝202,其中第一主体显影丝201按照图6实施例一中主体显影2的第二种缠绕路径缠绕,而第二主体显影丝202以螺旋线路径从支架本体4的近端向支架本体4的远端缠绕,同样的,所述第一闭环网单元400被第一主体显影丝201围合缠绕,且第二主体显影丝202在第一短波杆4002处重复缠绕,第一主体显影201丝和第二主体显影丝202叠加的方式使得第一闭环网单元400的位置可以更清楚的被表明,从而有利于术者进行手术。
进一步的,请参考图20,在本发明的其他实施例中,所述第二主体显影丝202和图19中的第二主体显影丝202一样以螺旋路径从支架本体4的近端向支架本体4的远端缠绕,第一主体显影丝201按照图5实施例一中主体显影2的第一种缠绕路径缠绕。
进一步的,请参考图21,在本发明的其他实施例中,主体显影2可以采用三根主体显影丝分别为第一主体显影丝201、第二主体显影丝202及第三主体显影丝203,其中,第一主体显影丝201还按照图5实施例一中主体显影的第一种缠绕路径进行缠绕,第二主体显影丝202在第一斜坡口波杆430的中间部分(即第二分叉处)换向并以螺旋线路径从支架本体4的近端向支架本体4的远端缠绕,第三主体显影丝203在第一斜坡口波杆430的远端(即第三分叉处)换向并也以螺旋线路径从支架本体4的近端向支架本体4的远端缠绕。
在本发明的其他实施例中,主体显影2可以包括1~8根主体显影丝,在包括多根主体显影丝的实施例中,主体显影丝之间可以采用实施例1~实施例3中的任意一种组合方式。
请参考图30,本发明实施例三中远端显影1也是采用第一远端显影丝101,其中所述第一远端显影丝101以紧密的方式缠绕数圈并在支架本体4远端部41的弧形部411上形成轴向环,其中该轴向环的内表面与所述弧形部411的外侧相贴合。
以上所述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。
以上所述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 (22)

  1. 支架,其特征在于:所述支架包括支架本体和显影结构,所述支架本体为由至少一个闭环网单位相互耦合成型,所述闭环网单位由波杆围合构成,所述显影结构包括主体显影,所述主体显影具有至少一主体显影丝,所述主体显影丝沿着波杆缠绕支架本体的至少部分。
  2. 如权利要求1所述的支架,其特征在于:所述主体显影丝螺旋缠绕所述波杆。
  3. 如权利要求1所述的支架,其特征在于:所述主体显影丝沿所述支架本体的近端向远端排布或沿所述支架本体的远端向近端排布。
  4. 如权利要求1所述的支架,其特征在于:所述主体显影丝在沿着所述波杆缠绕支架本体的路径上形成显影网单元,所述显影网单元标记所述支架的结构和/或位置。
  5. 如权利要求4所述的支架,其特征在于:所述显影网单元为闭合的几何形状;
    或者,
    所述显影网单元为半开的几何形状。
  6. 如权利要求4所述的支架,其特征在于:所述显影网单元的面积与所述支架本体在该位置的所述闭环网单位的面积相同;
    或者,
    所述显影网单元的面积为所述支架本体在该位置的若干个所述闭环网单位的面积之和。
  7. 如权利要求1所述的支架,其特征在于:所述闭环网单位包括至少一第一闭环网单元和至少一第二闭环网单元,所述第一闭环网单元围合的面积大于所述第二闭环网单元围合的面积。
  8. 如权利要求7所述的支架,其特征在于:所述第一闭环网单元围合的面积为所述第二闭环网单元围合的面积的2~5倍。
  9. 如权利要求7所述的支架,其特征在于:所述第一闭环网单元的数量为 所述第二闭环网单元的数量的1/20~1/3。
  10. 如权利要求7所述的支架,其特征在于:所述主体显影丝以缠绕的方式附着于至少一所述第一闭环网单元,以用于使所述支架本体上可显影出至少一所述第一闭环网单元。
  11. 如权利要求10所述的支架,其特征在于:所述主体显影丝缠绕于至少一所述第一闭环网单元的全部波杆以及缠绕于至少一所述第二闭环网单元的部分波杆。
  12. 如权利要求10所述的支架,其特征在于:至少一所述第一闭环网单元具有部分波杆被所述主体显影丝缠绕至少两次。
  13. 如权利要求10所述的支架,其特征在于:所述主体显影丝缠绕于至少一所述第一闭环网单元的部分波杆以及缠绕于至少一所述第二闭环网单元的部分波杆。
  14. 如权利要求10所述的支架,其特征在于:所述主体显影丝的数量为至少两根,其中一根所述主体显影丝缠绕于至少一所述第一闭环网单元的部分波杆以及缠绕于至少一所述第二闭环网单元的部分波杆,另一根所述主体显影丝缠绕于至少一所述第一闭环网单元的剩余波杆以及缠绕于至少一所述第二闭环网单元的部分波杆。
  15. 如权利要求1所述的支架,其特征在于:所述主体显影丝的数量为1~8根。
  16. 如权利要求1~15中任意一项所述的支架,其特征在于:所述显影结构还包括远端显影,所述远端显影连接于所述支架本体的远端。
  17. 如权利要求16所述的支架,其特征在于:所述远端显影的近端与所述主体显影的远端一体连接或可拆卸地连接。
  18. 如权利要求16所述的支架,其特征在于:所述远端显影为第一远端显影丝以缠绕的方式在所述支架本体的远端波杆形成至少一层包裹结构。
  19. 如权利要求16所述的支架,其特征在于:所述远端显影为第二远端显影丝,所述第二远端显影丝以缠绕的方式围绕所述支架本体的远端波杆形成的轴向环以及围绕所述轴向环外侧缠绕形成的周向环。
  20. 如权利要求1所述的支架,其特征在于:所述显影结构还包括近端显影,所述近端显影连接于所述支架本体的近端。
  21. 如权利要求20所述的支架,其特征在于:所述近端显影的远端与所述主体显影的近端一体连接或可拆卸地连接。
  22. 取栓系统,其特征在于:所述取栓系统包括如权利要求1~21任意一项所述支架及设置于所述支架近端的推送杆,所述推送杆与所述支架同轴或非同轴设置。
PCT/CN2022/102242 2021-07-09 2022-06-29 支架及取栓系统 WO2023280030A1 (zh)

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