A kind of encephalic of imitative fish scale-shaped takes bolt bracketTechnical field
The present invention relates to cerebral apoplexies to rescue field, takes bolt bracket more particularly to encephalic.
Background technique
There are many therapeutic modalities of cerebral apoplexy, including drug therapy and operative treatment etc..Drug therapy divides Arterial thrombolysis, quietArteries and veins thrombolysis and arteriovenous thrombolysis；Operative treatment mainly has Endarterectomy and Endovascular Stent-assisted Angioplasty etc..
Intravenous thrombolysis is to be injected intravenously thrombolytic drug, and thrombolytic drug is by carrying out near IV flow to thrombusThrombolysis；Arterial thrombolysis is that thrombolysis medicament is injected near thrombus by conduit, and high concentration thrombolytics is formed around thrombus, fromAnd thrombus of quickly degrading, so that the cerebrovascular leads to again, prevention brain tissue necrosis.However, the patient completely plugged to blood vessel is notIt is suitble to be treated using thrombolytic drug, and thrombolysis must carry out early stage stroke is fallen ill, colleague, haemolysis can cause bigBleeding risk.
Machinery takes bolt bracket to provide a kind of completely new rescue mode to cerebral apoplexy, can effectively remove thrombus, mentionHigh recanalization rate.But machinery takes bolt that bracket has been also faced with problems: after bracket is opened, radial support power is with diameterIncrease and reduce, so as to cause the thrombus breaks loose when withdrawing；Radial support power is excessive, and the damage that will lead to blood vessel is even brokenIt splits, causes a series of complication.
Summary of the invention
Goal of the invention: to take bolt bracket to arrest low efficiency, radial support power excessive for encephalic in the prior art by the present inventionOr too small problem, the encephalic for proposing a kind of imitative fish scale-shaped take bolt bracket.
Technical solution: the encephalic of imitative fish scale-shaped of the present invention takes bolt bracket, including rack body and push rod, bracketOntology includes the proximal end region for connecting push rod, connects the intermediate region of proximal end region and connect the distal area of intermediate regionDomain；Remote area includes multiple the first closed loop net units being successively socketed, and intermediate region includes by multiple second closed loop net unitsThe matrix of composition, multiple second closed loop net units in the every a line of matrix are sequentially connected, and multiple second in each column of matrix closeRing-main unit is successively socketed, and the junction of any 2 × 2 the second closed loop net units forms tetrahedron space, proximal end regionIncluding multiple third closed loop net units being successively socketed.
Further, the third closed loop net unit is equipped with connecting rod, and connecting rod connects push rod.
Further, the push rod includes solid main part and hollow coupling part, coupling part and connecting rodInterference fit.
Further, spiral developing mark point is arranged in the connecting rod.
Further, the first closed loop net unit is equipped with developing mark point.
Further, the second closed loop net unit is equipped with developing mark point.
Further, the rack body is made of memory alloy material.Memory alloy material is used, enables bracketBending forms barb-like, grasping ability of the raising bracket to thrombus.
Further, the push rod is made of memory alloy material.
The utility model has the advantages that the invention discloses a kind of encephalics of imitative fish scale-shaped to take bolt bracket, similar to closing for fish scale-shaped arrangementRing-main unit is capable of providing preferable flexibility, the tetrahedron space that the junction of any 2 × 2 the second closed loop net units is formedSuitable radial support power can be provided to bracket, radial support power is not too large, will not be too small.In addition, closed loop net unitBetween there is no overlapping, good compression property, integral support structure is simple, easy to process.
Detailed description of the invention
Fig. 1 is the overall structure figure of bracket in the specific embodiment of the invention；
Fig. 2 is the distribution map of the remote area of bracket in the specific embodiment of the invention, intermediate region and proximal end region；
Fig. 3 is the developing mark point in the specific embodiment of the invention on the first closed loop net unit and the second closed loop net unitDistribution map；
Fig. 4 is the distribution map of the developing mark point in the specific embodiment of the invention in connecting rod；
Fig. 5 is the perspective view of bracket in the specific embodiment of the invention；
Fig. 6 is the schematic cross-section that bracket is compressed in sheath in the specific embodiment of the invention；
Fig. 7 is the structure chart of push rod in the specific embodiment of the invention.
Specific embodiment
The encephalic that present embodiment discloses a kind of imitative fish scale-shaped takes bolt bracket, as depicted in figs. 1 and 2, including branchFrame ontology and push rod, rack body include the proximal end region 130 for connecting push rod, the intermediate region for connecting proximal end region 130120 and connect intermediate region 120 remote area 110；Remote area 110 includes multiple the first closed loop net lists being successively socketedMember 111, intermediate region 120 includes the matrix being made of multiple second closed loop net units 121, and multiple second in the every a line of matrixClosed loop net unit 121 is sequentially connected, and multiple second closed loop net units 121 in each column of matrix are successively socketed, and any 2 ×The junction of 2 the second closed loop net units 121 forms tetrahedron space, and proximal end region 130 includes multiple thirds being successively socketedClosed loop net unit 131.131 area equation of first closed loop net unit 111, the second closed loop net unit 121 and third closed loop net unit.Third closed loop net unit 131 is equipped with connecting rod 1311, and connecting rod 1311 connects push rod.
As shown in fig. 7, push rod includes solid main part 210 and hollow coupling part 220, coupling part 220It is interference fitted with connecting rod 1311.
Spiral developing mark point 1312 is arranged in connecting rod 1311, as shown in Figure 4.First closed loop net unit 111Distal end be equipped with circular configuration, as shown in Fig. 2, the circular configuration is for welding developing mark point 112, as shown in Figure 3.It is intermediateDeveloping mark point 122 is designed on multiple second closed loop net units 121 in region 120, developing mark point 122 is welded in multipleThe junction of two closed loop net units 121, one shares 10 developing mark points 122, totally 5 column, and each column 2.It will using welding mannerEach developing mark spot welding is connected on corresponding closed loop net unit, the effectively save developing material of energy, and guarantees that bracket outer is not dashed forwardPosition out will not cause to damage when bracket expands in the blood vessels to blood vessel, cause complication.
Rack body and push rod are all made of memory alloy material and are made.
The course of work of a lower bracket is described below: first rack body being compressed into sheath, then pushes sheath that will prop upFrame ontology transports vascular lesion position, withdraws sheath release rack body and forms lumen, can be by push rod to bracket sheetBody is pulled.Microtubular is transported to mount proximal end, pulls push rod, has the rack body of thrombus to pull in microtubular clampingIt is interior, microtubular, which is withdrawn, by thrombus and supporting band goes out blood vessel.Bracket release can just be withdrawn after a certain period of time, can make to prop up in this wayFrame is thoroughly opened and is contacted with thrombosis.