Get bolt holder deviceTechnical field
The present invention relates to technical field of medical instruments, specifically one gets bolt holder device.
Background technology
Cerebral infarction (cerebralinfarction, CI) be the general name of Ischemic Stroke (ischemicstroke), comprise cerebral thrombosis, lacunar infarct and cerebral embolism etc., accounting for 70% of whole apoplexy, is that brain blood supply obstacle causes brain lesions.Cerebral infarction is unexpected minimizing due to cerebral tissue local feeding artery blood flow or stopping, cause the brain tissue ischemia in this blood vessel blood supply district, anoxia causes cerebral tissue downright bad, softening, and with the clinical symptoms of corresponding site and sign, as the disease of the neurological deficit such as hemiplegia, aphasia.After Cerebral Infarction 24 ~ 48h, the low-density stove of the visible corresponding site of computed tomography brain scan, border owes clear, can have certain occupation time process.Typical AVM inspection can comparatively early discovery cerebral infarction, and showing as T1 on weighted image is low signal in focal zone, and T2 is high signal, and MRI can find less infarction focus.
At present, the clinical treatment of corresponding Ischemic Stroke mainly adopts medicine thrombolytic and machinery to get bolt.
The deficiency of medicine thrombolytic is: the thrombosis being only applicable to small volume, undesirable to the therapeutic effect of large volume thromboembolism, approximately only has the patient of 3-5% to be applicable to doing medicine thromboembolism treatment.
Bolt got by machinery is be delivered to lesion locations by getting bolt device, and be then taken out to by thrombosis external by sheath pipe, machinery is got bolt and comprised following several method: thrombectomy, and it is thorough that this method gets bolt, but excessive to vascular damaged, very easily causes various complication; Laser gets bolt, and this method operation easier is large, and laser energy is too low then invalid, the too high then injured blood vessel of energy, and cause various inflammation equally, catching device gets bolt, very little to vascular damaged, but often can not entangle blood clot; Mend bolt net and get bolt, although simple to operate, because mending, bolt dictyosome is long-pending cannot be used at intracranial vessel comparatively greatly.
Although Chinese patent 011148896 discloses a kind of patent of invention that can be used for the recyclable temporary thrombus filter of intracranial vessel, the deficiency when getting bolt is that support force is not enough, and thrombosis is fixed insecure, easily comes off, unprotect, and complex structure.
As can be seen here, utilize current disclosed technology to carry out getting bolt, the speckle in blood vessel wall and broken thrombi are easy to come off, and flow to distal vessels, cause the risk of new thromboembolism.
In order to solve the problems of the technologies described above, CN104068912 discloses a kind of intracranial vessel and gets bolt device and get pin device, it is propped up by outer support and internal layer to be configured to, described ectonexine support all forms netted, and outer support is coated on outside internal layer support, form gap between the two, in removal process after catching thrombosis, thrombosis is fixedly secured by the gap of ectonexine frame member, its substantive deficiency is: this apparatus, do not consider the blood vessel situation of intracranial, the very tortuous and diameter of intracranial vessel is substantially in 4MM, the way of this support superposition requires that conduit internal-and external diameter is very large, and be assembled in conduit and can form adamantine run, cause to arrive thromboembolism place by tortuous intracranial vessel.Even if arrive carotid artery section, in capture-process, clot is clamped by ectonexine standoff gap, but clot cannot be made to enter in internal layer support because internal layer stent mesh is too small and cause clot labile state, get in bolt process, when blood flow enters in internal layer support, the clot in interlayer is impacted from internal layer internal stent, clot is flowed out from outer support, therefore, thrombi cannot be solved and come off and cause the Substantial technical problem of new thromboembolism.
Summary of the invention
The object of the invention is to solve above-mentioned the deficiencies in the prior art, provide a kind of structure simple, catch performance high, get bolt clean, prevent vasospasm, recover blood flow rate fast get bolt holder device.
The technical solution adopted for the present invention to solve the technical problems is:
One gets bolt holder device, comprise and get bolt support, delivery guidewire, guiding seal wire and Marking ring, described near-end gets bolt support, distal embolic protection support is the network structure of sealing two ends, get bolt support described in it is characterized in that and get bolt support by near-end and distal embolic protection support forms, described Marking ring comprises stage casing Marking ring, proximal marker ring and distal marker, described distal embolic protection mount proximal end is got bolt rack far end through stage casing Marking ring and near-end and is fixedly connected with, far-end is fixedly connected with distal marker and the seal wire that leads, guiding can be played by guiding seal wire and reduce the effect of the compressing to microtubular and the stimulation to blood vessel in support course of conveying, prevent vasospasm, near-end can be picked up by distal embolic protection support and get the clot that bolt support comes off, effectively prevent thrombus breaks loose in Ink vessel transfusing, solve thrombus breaks loose and cause new thromboembolism problem, described near-end is got bolt mount proximal end and is connected with proximal marker ring and delivery guidewire, the off-position that near-end gets bolt support can be located accurately by proximal marker ring and middle segment mark, accurate crawl thrombosis, the mesh that near-end gets bolt support can make thrombosis be embedded into inside, when thrombus breaks loose in the process pulling thrombosis, namely the little mesh of distal embolic protection support can effectively prevent thrombus breaks loose in Ink vessel transfusing, solve the technical problem that thrombus breaks loose causes new thromboembolism.
The grid-gap that the grid-gap of distal embolic protection support of the present invention gets bolt support than near-end is little, collects near-end and gets the clot that bolt support comes off, avoid clot again to come off in Ink vessel transfusing, reach the effect preventing thrombus breaks loose further to make distal embolic protection support.
The grid gap that near-end of the present invention gets bolt support and distal embolic protection support is distally reduced gradually by near-end, is beneficial to the danger reducing thrombus breaks loose further.
Guiding seal wire of the present invention and Marking ring be by platinum wire in the shape of a spiral coiling form, using reach as distal marker and guiding seal wire use effect.
Stage casing of the present invention Marking ring be by platinum wire helically coiling form, to reach the effect of getting bolt support and distal embolic protection support for closed proximal end, meanwhile, also as the effect that middle segment mark uses.
The present invention owing to adopting said structure, have that structure is simple, registration, seizure performance are high, get bolt clean, prevent vasospasm, recover the advantages such as blood flow rate is fast.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the structural representation of embodiments of the invention.
Fig. 3 is the structural representation of another embodiment of the present invention.
Reference numeral: distal embolic protection support 1, delivery guidewire 2, guiding seal wire and labelling 3, thrombosis 4 near-end get bolt support 5, stage casing Marking ring 6, proximal marker ring 7, microtubular 8, blood vessel 9.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is further described:
As shown in drawings, one gets bolt holder device, comprise and get bolt support, delivery guidewire 2, guiding seal wire 3 and Marking ring, described near-end gets bolt support 5, the network structure of distal embolic protection support 1 in sealing two ends, get bolt support described in it is characterized in that and get bolt support 5 by near-end and distal embolic protection support 1 forms, described Marking ring comprises stage casing Marking ring 6, proximal marker ring 7 and distal marker, described distal embolic protection support 1 near-end is got bolt support 5 far-end through stage casing Marking ring 6 and near-end and is fixedly connected with, far-end is fixedly connected with distal marker and the seal wire 3 that leads, guiding can be played by guiding seal wire and reduce the effect of the compressing to microtubular and the stimulation to blood vessel in support course of conveying, prevent vasospasm, near-end can be picked up by distal embolic protection support and get the clot that bolt support comes off, effectively prevent thrombus breaks loose in Ink vessel transfusing, solve thrombus breaks loose and cause new thromboembolism problem, described near-end is got bolt support 5 near-end and is connected with proximal marker ring 7 and delivery guidewire 2, the off-position that near-end gets bolt support can be located accurately by delivery guidewire 2 and stage casing Marking ring 7, accurate crawl thrombosis, the mesh that near-end gets bolt support 5 can make thrombosis be embedded into inside, when thrombus breaks loose in the process pulling thrombosis, namely the little mesh of distal embolic protection support 1 can effectively prevent thrombus breaks loose in Ink vessel transfusing, solve the technical problem that thrombus breaks loose causes new thromboembolism.
The grid-gap that the grid-gap of distal embolic protection support 1 of the present invention gets bolt support 5 than near-end is little; collect near-end to make distal embolic protection support 1 and get the clot that bolt support 5 comes off; avoid clot again to come off in Ink vessel transfusing, reach the effect preventing thrombus breaks loose further.
The grid gap that near-end of the present invention gets bolt support 5 and distal embolic protection support 1 is distally reduced gradually by near-end, is beneficial to the danger reducing thrombus breaks loose further.
Guiding seal wire 3 of the present invention and Marking ring be by platinum wire in the shape of a spiral coiling form, using reach as distal marker and guiding seal wire use effect.
Stage casing of the present invention Marking ring be by platinum wire helically coiling form, get bolt support 5 to reach for closed proximal endwiththe effect of distal embolic protection support 1, meanwhile, also as the effect that middle segment mark uses.
The present invention clinical do interventional therapy time, first by angiography determination intracranial vessel lesion locations, micro-wire guiding microtubular 8 imports in blood vessel 9 also through thrombosis from femoral artery or brachial artery, withdraw from micro-wire, by delivery guidewire, the present invention is also passed through guiding seal wire and Marking ring 3 through lesion locations in microtubular 8, stage casing Marking ring 6 and proximal marker ring 7 are accurately located, make near-end get bolt support and be just in time positioned at thrombosis place, withdrawing microtubular 8 makes the present invention discharge at Ink vessel transfusing, distal embolic protection support 1 and near-end are got bolt support 5 and are opened under the elastic reaction of marmem, distal embolic protection support 1 and blood vessel wall are fitted, near-end is got bolt support 5 and is opened in thrombosis and make thrombosis enter into stent mesh, then, pull delivery guidewire 2, making near-end get bolt support 5 drives the thrombosis of arresting to withdraw, in the process of pulling back, the clot of bulk is got bolt support 5 through near-end and is obtained, the clot getting the fritter that bolt support 5 comes off or overflows through near-end is tackled through distal embolic protection support 1, avoid the clot intravascular come off flow into narrow positions and form new thromboembolism, until withdraw from outside human body together with the present invention is withdrawn from guiding catheter with thrombosis, complete and get bolt process.
The present invention owing to adopting said structure, have that structure is simple, registration, seizure performance are high, get bolt clean, prevent vasospasm, recover the advantages such as blood flow rate is fast.