CN202490001U - Medical cerebral thrombus removing device - Google Patents

Abstract

A medical cerebral thrombus removing device comprises a guide wire, a tubular cross mesh, a filter, a traction device, a balloon catheter and an outer sheath catheter, wherein a plurality of balloons are distributed at the far end of the balloon catheter. The balloon catheter is communicated with the balloons and the rear end of the balloon catheter through the guide wire. The far end of the tubular cross mesh is connected with the filter, and the close end of the tubular cross mesh is connected with the traction device. The medical cerebral thrombus removing device is characterized in that the filter is divided into two parts, and the close segment is tubular and the rear end is funnel-shaped. A frame is made of metal wires in an axis symmetric structure. A film is sleeved outside the frame, a plurality of holes are arranged on the film, and a diameter of each hole is 300 micrometers to 400 micrometers.

Description

Medical cerebral thrombosis withdrawing device

Technical field

The present invention relates to be used to pulverize and take out in the blood vessel or the device of fresh thrombus, atheromatous plaque or other objects in other anatomic passageway.

Background technology

Along with the improvement of living standard, the cardiovascular and cerebrovascular disease sickness rate improves year by year, becomes one of human three big causes of death.Wherein the sickness rate of cerebrovascular disease, prevalence, mortality rate, disability rate and relapse rate are all high.Main result is following for China's EPDML investigation of cerebrovascular: sickness rate: 136～4,41/,100,000 population/years (163.2～1529.2 ten thousand/year), wherein, cerebral infarction accounts for 75% of apoplexy; Prevalence: 280～12,85/,100,000 populations (336～1529.2 ten thousand/year); 10000 population/years of mortality rate: 59-281/10 (70.8～337.2 ten thousand/year) average 1,30/,100,000 people/years (1,560,000/year); Disability rate: 60-80%.It is greatly endangering human beings'health, is the key subjects that medical circle faces.In general, mostly the main cause of adult morbidity in late period is the inaccessible disease of atherosclerotic thrombosis.

Its therapeutic purposes: focus on the perfusion that recovers or actively increase ischemic region; Take thrombolytic or anticoagulant and cerebral protective agent; Adjust blood pressure (it is hemorrhage to prevent that hyperpiesia from causing in the thrombolytic process, avoids hypopiesia hypoperfusion to occur again, increases the weight of ischemia symptom); The antagonism reperfusion injury is to encephaledema.

The at present normal existing thrombosis taking-up/destruction conduit of the percutaneous intubate interventional therapy method induction type conduit of suction hose (as have); Thrombosis trap-type conduit (conduit that has the thrombosis container for capturing like far-end); Thrombosis breaking plant (distal end of catheter contains ultrasonic spy or laser head); Above-mentioned apparatus far-end is surpassed or near thrombosis, thrombosis caught, destroyed or melts, play the purpose of logical blood vessel again.Existing thrombosis trap-type conduit respectively has its pluses and minuses, because of it is flexible not enough, to better than thrombosis capture effect in the trunk, but the tortuous intracranial vessel of traveling is then got into difficulty, is difficult to carry out.

Summary of the invention

To the shortcoming of prior art, the purpose of this utility model provides a kind of medical cerebral thrombosis withdrawing device, and it comprises: seal wire, tubulose intersection twine, filter, traction apparatus, foley's tube and epitheca conduit; The far-end of foley's tube is arranged with a plurality of sacculus, and the foley's tube far-end communicates with said a plurality of sacculus and catheter tip through seal wire; The far-end of tubulose intersection twine is connected with filter, and near-end is connected with traction apparatus, it is characterized in that filter is divided into two parts; Nearly section part is a tubulose; End is a funnel-form, constitutes skeleton by the tinsel of axially symmetric structure, and the skeleton outside is with thin film; This thin film is provided with a plurality of holes, and the diameter in this hole is 300 to 400 microns.

Compared with prior art; Adopt the basket structure; The blood flow of arresting, twine and take out the process medium vessels at thrombosis is able to continue to flow; Do not disturb the blood of normal cerebral tissue to supply, in removal of thromboses and embolus, the lumen of vessels far-end is protected, thereby make the clot or the thrombosis fragment that in the process of thrombosis and embolus taking-up, are produced all be able to take out.

Description of drawings

The structural representation of Fig. 1 embodiment cerebral thrombosis withdrawing device.

Fig. 2 intersects filter, tubulose that twine processes and intersects the sketch map of twine, connecting piece and traction seal wire.

The specific embodiment

See also Fig. 1, the device of the embodiment of the invention one comprises: seal wire 1, filter 2, tubulose intersect twine 3, connector 4, traction seal wire 5, sacculus 6, foley's tube 7, seal wire through hole 8, nut 9, medium pore 10, side opening 11 and housing catheter 12.Seal wire 1 can pass thrombosis or the arteriosclerosis plaque that comes off or other embolus and arrive thrombosis far-end position enough far away; Foley's tube 7 is along seal wire follow-up, passes thrombosis and arrive the thrombosis far-end enough far away, and its proximal balloon should be positioned at the thrombosis near-end; Catch thrombosis device filter 2 that comprises far-end and the tubulose that is attached thereto and intersect twine 3, tubulose intersects twine 3 and filter 2 and covers all sacculus 6, and is compressed and is enclosed within foley's tube 7 far-ends; And with in the foley's tube 7 insertion thrombosis, full sacculus 6, tubulose intersection twine 3 is expanded with filter 2 thereupon; Thrombosis is compressed to gap between the sacculus, simultaneously by the chopping of tubulose intersection twine, find time sacculus 6 and pumpback foley's tube 7; Remaining broken thrombosis is positioned at tubulose intersection twine 3 and filter 2; The traction seal wire that pumpback links to each other with support advances the epitheca conduit simultaneously, makes tubulose intersection twine and the broken thrombosis of inner residue thereof taken in housing catheter and takes out.

Consult Fig. 2; Filter 2 also can be made up of more intensive intersection twine, does not need thin film, and nearly section is more intensive tubulose intersection twine; End is funnel-form; Tubulose intersects twine and is formed by the stainless steel tube of thin-walled or Ni-Ti alloy, Cu-Zn-Al compo pipe laser engraving, or is formed by 3,4,6,8 or the more cross one another Ni-Ti alloy threadlets of helical form, Cu-Zn-Al alloy threadlet, stainless steel filament, resilient macromolecule medical plastic or fiber filaments or the braiding of other filaments, and the crossing net filament length does not wait for about 2.0,2.5,3.0 centimetres; Diameter can be divided into different model according to length and diameter with to intersect twine consistent.The filter mesh is rhombus or the polygon being convenient to compress; It is little that the filter mesh intersects the mesh of netware; Filter part mesh short diagonal is the 100-500 micron, and long-diagonal is the 500-3000 micron, and the mesh of intersection netware is bigger; Long-diagonal is the 1000-5000 micron, and short diagonal is the 300-400 micron.When more intensive mesh also can let blood pass through, prevention thrombosis or the atheromatous plaque that comes off passed through.Filter 2 near-ends and tubulose intersect twine 3 far-ends and link to each other, and both are linked to be an integral body, common constitute pulverize and the thrombosis arresting structure, should select the tubulose of respective model to intersect twine 3 and filter 2 according to different blood vessels or thrombosis size.Connector 4 is made up of the fine wire or the medical high polymer plastic material filament of 3,4,5,6 or 8 axially symmetric structures, intersects 3,4,5,6 or 8 the axial symmetry points and the traction seal wire 5 of twine near-end with tubulose and links to each other, draws seal wire and can be processed by stainless steel silk.

Claims (1)

1. medical cerebral thrombosis withdrawing device, it comprises: seal wire, tubulose intersect twine, filter, traction apparatus, foley's tube and epitheca conduit; The far-end of foley's tube is arranged with a plurality of sacculus, and the foley's tube far-end communicates with said a plurality of sacculus and catheter tip through seal wire; The far-end of tubulose intersection twine is connected with filter, and near-end is connected with traction apparatus; It is characterized in that filter is divided into two parts, nearly section part be a tubulose, and end is a funnel-form, constitutes skeleton by the tinsel of axially symmetric structure, is with thin film outside the skeleton, and this thin film is provided with a plurality of holes, and the diameter in this hole is 300 to 400 microns.

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