CN202723910U - Endovascula stent with complex function - Google Patents
Endovascula stent with complex function Download PDFInfo
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- CN202723910U CN202723910U CN 201220348344 CN201220348344U CN202723910U CN 202723910 U CN202723910 U CN 202723910U CN 201220348344 CN201220348344 CN 201220348344 CN 201220348344 U CN201220348344 U CN 201220348344U CN 202723910 U CN202723910 U CN 202723910U
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Abstract
The utility model discloses an endovascula stent with a complex function. The endovascula stent with the complex function comprises a stent body. The stent body is net-shaped and can be released and retracted from a delivery catheter. The near-end of the stent body is an open cone shape, the middle portion of the stent body is tube-shaped, and the far-end of the stent body is a closed structure. The closed structure is formed by being woven with a single filament or a plurality of filaments or being carved by a laser engraving machine. As an extracting system for acute thrombosis, the endovascula stent not only extracts thrombus promptly and effectively, but also catch a small thrombus flowing to far end at the same time, thus a second apoplexy caused by thrombus blockage of the far end can be avoided. As a temporary stent, the endovascula stent can expand intracranial blood vessel or narrow and blocked blood vessel of other part of human body so as to play a function of dredging and rebuilding blood flow. As a long-term implanted stent, the endovascula stent can treat bifurcation aneurysms in auxiliary mode and fill in blank of market. If the position of the stent is not satisfying, all the stents can be withdrawn to the delivery catheter and be released again. The endovascula stent with the complex function has the advantages of being high in controllability, low in operation difficulty so as to greatly increase achievement ratio of operation.
Description
Technical field
This utility model relates to a kind of endovascular stent of complex function, belongs to technical field of medical instruments.
Background technology
Apoplexy is the refractory disease of serious harm human health and life security, reaches 2,800,000, annual stroke patient dead 1,500,000 according to the annual patient with cerebral apoplexy that occurs of statistics China.The stroke patient 8,000,000 of now surviving, wherein 6,000,000 patients disability and can't take care of oneself in various degree.For the patient of the apoplexy of in time delivering to hospital, conventional therapeutic scheme is the medicine thrombolytic, but the effective ingredient of a lot of medicines is difficult to reach lesion, thereby does not reach the predetermined treatment purpose.Secondly, the window time (disease is dealt into the time that obtains medical treatment) that medicine melts bolt the best is within 4 hours, because China overwhelming majority patient stays in small and medium-sized cities and rural area, they deliver to and surpass often this time period after the hospital of certain treatment ability, therefore in the disability rate of China's apoplexy up to 75%.Patient for apoplexy (intracranial vessel seriously stops up) or intracranial vessel Serious Stenosis, the blood vessel that is positioned at the pathological changes far-end loses blood fully or almost and supplies, the very urgent problem that will solve is removal of thromboses or the blood vessel of expanding narrow obstruction, realize fast revascularization, blood flow is rebuild in dredging.
Aneurysm is owing to the weak a kind of permanent tumor sample projection that produces of ductus arteriosus wall.Aneurysm can form at any position, and wherein cerebral aneurysm is very harmful to the mankind, and the cerebral aneurysm of breaking may directly threaten patient's life security.85% subarachnoid hemorrhage is owing to ruptured cerebral aneurysm causes.For cerebral aneurysm and small artery hemangioma, release microcoils thromboembolism is the most safe and reliable effective method in aneurysm by getting involved.The turn of putting into cerebral aneurysm can bring out the capable one-tenth of thrombosis so that the blood of flowing through significantly slows down, and finally makes this aneurysm occlusion, avoids aneurysm rupture.If the aneurysm larger or wide neck shape that is size, the doctor can discharge first the tubular support of a routine below aneurysm, and then in aneurysm, discharging the microcoils of some, this support can be held turn like this, avoids its slippage to go out aneurysm.But for middle cerebral artery and basilar artery, its aneurysm major part occurs in furcation, and much be wide neck, if it is very large to adopt conventional tubular support to aid in the interior release of aneurysm microcoils operating difficulty, and turn still can be deviate from aneurysm, and flow to other blood vessel, bring fatal danger to patient.
In recent years, carried out gradually acute cerebral thrombosis in some hospitals of European and American developed countries and got involved embolectomy, compared with the conventional medicine thrombolytic, the interventional method time spent is short, risk is low, the height (can up to 90%) that takes up rate, the more important thing is the window time can extend to disease and send out after 8 hours.The acute thrombus extraction system that now American-European doctor accepts is the Solitaire FR Device of U.S. ev3 company and the Merci Retrieval Device of U.S. Concentric Medical company.The using method of the two is almost consistent, and whole apparatus is to be received in an external diameter less than in 1 millimeter the microtubular.During intervene operation, the doctor has the microtubular of this apparatus to push thrombosis in cover, then releases the core apparatus, and this device just can entangle thrombosis like this.And begin slowly to withdraw microtubular, the thrombosis that entangles is transferred in the larger guiding catheter of internal diameter.After thrombosis took out, patient's disease had very large alleviation mostly.
At present clinical still not have a special support that designs for middle cerebral artery furcation aneurysm and basilar artery furcation aneurysm.There is the minority clinician to attempt two tubular supports successively are placed on below the furcation aneurysm both at home and abroad, the far-end of two supports is discharged into respectively in the rightabout blood vessel, two support intersections are positioned at below the aneurysm just, and then discharge the turn of some in aneurysm.But such intervene operation difficulty is very large, success rate is not high, and long-term effect is not good, because two tubular supports placed side by side have occupied most blood vessel space, support is after being retained in the patient's blood vessel some months, mostly can occur narrow in the support even stop up this blood vessel, bring fatal danger to patient.
The Merci Retrieval Device of the Solitaire FR Device of U.S. ev3 company and U.S. Concentric Medical company has common several large shortcoming in actual clinical is used: 1) the two does not all have distal vessels protection design; having [Dan in the use peels off from main body and flows to the more blood vessel of far-end; thereby stop up more tiny blood vessel; cause second stroke, even jeopardize patients ' lives.2) if patient's section angiostenosis is serious, the doctor need to withdraw from whole devices after thrombosis is taken out, and then implements operation again, places expandable stent, narrow section vasodilation is played the effect of dredging blood flow.Get thrombosis and implement separately execution of support operation, operation is complicated, and operating time is long, and patient is had a big risk.
The apoplexy cause of significant proportion is that patient's Intracranial Atherosclerosis forms speckle, and speckle causes blood vessel Serious Stenosis even blood vessel blockage after coming off, and after certain section blood vessel blockage, its distal vessels loses blood supply, causes brain tissue impairment and death.For such case, even after thrombosis took out, apoplexy probably occured within half a year patient again, jeopardized patients ' lives.For such situation, recent domestic is carried out some intracranial vessel stent forming arts gradually, and the angiostenosis obstruction that causes for the treatment Intracranial Atherosclerosis has obtained good effect.
Existing intracranial stent is that stable atherosclerotic plaque has certain effect for Intracranial Arteries Stenoses.But many patient's Intracranial Arteries Stenoses are caused by unsettled atherosclerotic plaque, but also can be with thrombosis.For such case, use the intracranial stent of conventional design not only not have very good effect, also might impel this unsettled atherosclerotic plaque of patient to come off, cause apoplexy, even jeopardize patients ' lives.
The angiostenosis that causes for Intracranial Atherosclerosis is stopped up, and Chinese patent application 201020659169.5 and 201110416746.7 proposes a kind of special-shaped support, and this design is that then the circular tube shaped braided support two terminal filament material tightens with routine penetrate in the aobvious ring.Thinking is that this support is discharged into entocranial artery blood vessel narrow or that stop up, places after 45～120 minutes, because the support dilating effect, blood flow recovers gradually.But the fatal shortcoming of this support is that silk material whole tightens at two ends are in developing ring, form the close structure of knitting at the support two ends, after blood flow enters mount proximal end like this, flow velocity reduces greatly, thereby promote in support, to form thrombosis, cause in the support and stop up, thereby also can stop up gradually this blood vessel, bring great risk to patient.
The utility model content
Technical problem to be solved in the utility model provides a kind of endovascular stent of complex function, can possess simultaneously multiple use, be used for auxiliary treatment furcation aneurysm as the blood vessel of the narrow obstruction of acute thrombus extraction system, falsework expansion intracranial and as long-term implant frame, meet the need of market.
For solving the problems of the technologies described above, this utility model provides a kind of endovascular stent of complex function, it is characterized in that, comprise that one is rack body netted, that also can discharge and retract from delivery conduit, the near-end of rack body is open taper, and the middle part is tubular, and far-end is closing structure;
Rack body is to form by individual thread or multi-filament weave out netted or by the laser engraving machine engraving.
Rack body by the silk material of one or more materials manually or braider braiding form, two interlaced silks are the bridging arrangements that mutually slide or without the hook joint structure of relative sliding at Nodes.
Also include and be beneficial to the developing ring that develops under the x-ray, developing ring and rack body mixed weaving or be arranged at respectively rack body far-end and near-end.
The closing structure of described far-end is umbrella or tubbiness, and the closing structure side grid of far-end is greater than the grid on the rack body.
The size of mesh opening of described far-end closing structure is between 200 microns and 1000 microns.
Described far-end closing structure material is degradation material.
Described rack body material is tweezer titanium alloy, cochrome, memorial alloy, rustless steel, Biodegradable material, degradable magnesium alloy or degradable ferroalloy.
Described developing ring material is pure platinum or its alloy, true yellow gold or its alloy, pure tungsten or its alloy, pure tantalum or its alloy.
Described rack body near-end is connected with a delivery guidewire that is covered with dielectric film, comprises the linkage section of one section naked film on the described delivery guidewire with described rack body near-end junction.
Described rack body transports through described delivery conduit, to the blood vessel of narrow or obstruction, as interim vasodilation support; Or deliver in the blood vessel of thrombosis through delivery conduit, by the far-end closing structure thrombosis is entangled taking-up; Or push to furcation cerebral aneurysm place through delivery conduit and discharge, and separate with described delivery guidewire through electrolysis, become the permanent support that stays in blood vessel and hold the turn that is released in the furcation cerebral aneurysm.
The beneficial effect that this utility model reaches:
1) this utility model support is as the acute thrombus extraction system, and not only removal of thromboses rapidly and efficiently simultaneously can be caught the [Dan that flows to far-end, avoids the far-end thrombosis to stop up second stroke occurs.
2) this utility model support can be used as the blood vessel of the narrow obstruction of falsework expansion intracranial, plays the effect that blood flow is rebuild in dredging, and can catch little thrombosis or embolus.
3) support of the present utility model can be used as long-term implant frame and is used for auxiliary treatment furcation aneurysm, fill a hole in the market, up to now on the market without any being specifically designed to the beat one's brains support of arteries and veins tumor of furcation.
4) induction system of this utility model support can reclaim support, if the doctor is dissatisfied to backing positions, still can all recall delivery conduit, again releasing bracket to support.Can handlingly improving a lot of mounting system, operating difficulty reduces, and success rate of operation can increase substantially.
Description of drawings
Fig. 1 is the umbrella support of far-end closure;
Fig. 2 is the tubbiness support of far-end closure;
Fig. 3 is that support of the present utility model is as acute thrombus removal equipment sketch map;
Fig. 4 is that support of the present utility model is as Quick dredging blood flow falsework sketch map;
Fig. 5 is that support of the present utility model is as furcation aneurysm support sketch map;
Fig. 6 is the support that braiding is the hook joint structure.
The specific embodiment
Below in conjunction with accompanying drawing this utility model is further described.Following examples only are used for the technical solution of the utility model more clearly is described, and can not limit protection domain of the present utility model with this.
Mount proximal end 12 of the present utility model is opened tapered, and middle part 13 is pipe, and far-end 11 is closing structure.According to distal structure design, this utility model can be divided into two kinds on umbrella support and tubbiness support.Support can be one or more manually or the braided support that is made of braider.Also can be through laser engraving machine process with Fig. 1 or Fig. 2 in the close support of structure.The silk material of the support that multi-filament weaves out can be a kind of material or multiple different materials, the rack body material can be memory alloy wire or cochrome silk or other high performance alloys, with the rack body mixed weaving be the extraordinary developing ring 15 that develops under the x-ray, the developing ring material is platinum wire, tungsten filament, gold silk or tantalum wire.
Such as Fig. 1-shown in Figure 5, the design's core is that support 10 far-ends 11 are closing structures, and weave mesh is between 200 microns and 1000 microns.If the tubbiness support, the side grid 14 of next-door neighbour's rack far end 11 is greater than the rack body grid, and the side that is close to rack far end for the umbrella support is complete open architecture.Such design is fit to the furcation aneurysm very much, because there is important blood vessels the following both sides of tremulous pulse arteries and veins tumor, this support can not stop up those branch vessel.Mount proximal end 12 is open tapered, and the axis vertebra angle that forms between 0 degree to 75 degree, and link together with delivery guidewire 20 far-ends 22, such design is beneficial to support and reclaims and enter conduit.Before use, delivery guidewire 20 and support 10 as integrated press-mounting in the conduit of a moderate dimensions.Delivery guidewire 20 length if need releasing bracket, are pinned delivery guidewire 20 most proximal end greater than catheter length, slowly withdraw conduit, and the far-end 11 of support, middle part 13, near-end 12 just discharge in conduit successively.If need to reclaim support, need to pin the conduit most proximal end, slowly withdraw delivery guidewire 20, the near-end of support, middle part, far-end just are recovered to catheter interior successively.
Support can be single also can be the braided support that forms of multi-filament hand woven or machine braiding.And two staggered silks both can be the bridging arrangements that mutually slides at node, also can be the hook joint structures that two silks interlocking cannot slide at node, as shown in Figure 6.Its material diameter range is 10 microns to 1 millimeter; If the laser engraving support, the thickness of support fine strain of millet and width range are 10 microns to 1 millimeter
Diameter range was 1 millimeter to 30 millimeters after support discharged fully, and length range is 1 millimeter to 100 millimeters;
The delivery guidewire length that is fixed together with support is 20 centimetres to 200 centimetres, 0.1 millimeter to 3 millimeters of diameter.
The material of the silk of braided support can be in the following material one or more:
Tweezer titanium alloy, cochrome, rustless steel, pure platinum or its alloy, true yellow gold or its alloy, pure tungsten or its alloy, pure tantalum or its alloy, pure titanium or its alloy, degradable metal material, Biodegradable material (for example polylactic acid PLLA).
The material of the delivery guidewire that links together with support is:
Tweezer titanium alloy or cochrome or rustless steel.
The delivery guidewire 20 that mount proximal end 12 and is covered with dielectric film is connected, and comprises the linkage section 23 of one section naked film on delivery guidewire 20 far-ends 22 with mount proximal end 12 junctions.
Netted support can separate with described delivery guidewire 20 through electrolysis, thereby support is released in the blood vessel of pathological changes, plays therapeutical effect.
Mount proximal end, far-end are provided with the extraordinary developing ring that develops under the x-ray.
Embodiment 1
If support of the present utility model is as the acute thrombus removal equipment, the doctor slowly pushed thrombosis 30 to the conduit (or microtubular) that inside is pressed with support 10, then pin delivery guidewire 20 near-ends 21 that are fixed together with support, slowly withdraw microtubular, as shown in Figure 3, support just discharges and thrombosis 30 is contained like this.Slowly withdraw delivery guidewire 20 this moment, finally thrombosis delivered in the larger guiding catheter of internal diameter, will withdraw from the patient body with the guiding catheter of thrombosis.The dredging of patient's blood flow, remission.
Embodiment 2
If support of the present utility model is used for the blood vessel that Quick dredging is narrow or stop up as falsework, as shown in Figure 4, the doctor can deliver to the microtubular that this utility model support 10 is equipped with in inside narrow or the blood vessel 40 that the stops up position of far-end more, then pin the delivery guidewire 20 that is fixed together with support, slowly withdraw microtubular, support just discharges like this.If the doctor is dissatisfied to backing positions, can recall microtubular to support, readjust the microtubular position, and then releasing bracket, finally mid-stent is placed on narrow blood vessel place, because support expansion supporting role, stenosis blood vessel actual inner diameter increases, blood flow increases gradually, and patient symptom is alleviated.General after about 30 minutes to 120 minutes, blood flow can recover fully.Reach after the therapeutic purposes, the doctor slowly withdraws delivery guidewire and microtubular, and mounting system and a plurality of [Danes 31 of catching thereof are received a guiding catheter that internal diameter is larger, then whole systems is withdrawn from the patient body.
If the far-end of support of the present utility model 11 is closing structure (umbrella section or bottoms of the barrel), material is degradation material, then can be used as long-term implant frame and forever put into narrow blood vessel, play permanent expansion narrow section blood vessel, improve the blood flow effect.According to clinical requirement, the rack far end closure need to be degraded in one month, more satisfactory Biodegradable material is the polylactic acid of ratio 1:1 and copolymerized macromolecule mixture Poly (D, the L-lactide-co-glycolide) 50:50 of polyglycolic acid.Degradable magnesium alloy, ferroalloy also can reach requirement.
Through in simulated blood vessel, testing, use fresh animal blood, and the molecule that adds 100～200 microns of a small amount of diameters in blood is as simulation embolus (clinical experience think do not form easily thrombosis less than 200 microns embolus in blood vessel).Successively sample and the sample of the present utility model of patent application 201020659169.5 and 201110416746.7 are put into above-mentioned simulated blood vessel, compare.In the time of about 20～30 minutes, patent application 201020659169.5 and 201110416746.7 sample holder two ends are seriously stopped up, and the blood flow that passes through significantly descends.And sample holder of the present utility model is still unimpeded after 3 hours.
Embodiment 3
If support of the present utility model is used for assisting the release microcoils as Permanent implantation support 10, the doctor can deliver to the microtubular that this utility model support is equipped with in inside furcation aneurysm 50 inside of main blood vessel 70 and branch vessel 71, then pin the delivery guidewire 20 that is fixed together with support, slowly withdraw microtubular, support just discharges like this, such as Fig. 5, by observing the position of rack far end 11 developing rings (or development turn) 15, guarantee that umbrella (or tubbiness) structure of rack far end is positioned at aneurysm 50 cervical regions just.If the doctor is dissatisfied to backing positions, can recall microtubular to support, readjust the microtubular position, and then releasing bracket, umbrella (or tubbiness) structure of final rack far end is placed into and just is positioned at aneurysm 50 cervical regions.Then will be pushed to another microtubular of turn 60 below the furcation aneurysm 50; then this microtubular is passed the grid of rack far end 11, enter aneurysm 50, and discharge a plurality of turns 60; be used for forming thromboembolism in the aneurysm, play the effect of protection aneurysm.If far-end 11 grids are too small, can hinder microtubular and pass, grid is excessive, and microcoils 60 has slippage chance out.Therefore, the far-end grid of support need rationally be set.
The manufacture method of above-mentioned support comprises:
Processing method-1
Such as the umbrella support of Fig. 1 or the tubbiness support of Fig. 2, can plurality of specifications (different-diameter and length) be arranged according to clinical needs.According to a certain particular design, at first a metal cylinder is processed into the mould that approaches very much with stent diameter, and goes out many parallel grooves according to Design and Machining.Get one or more materials in the staggered mode of passing through of forward-reverse spiral line, twine along groove that to be woven into near-end tapered, the stage casing is round tube shape, and far-end is umbrella shape (Fig. 1) or tubbiness, cylindrical shape (Fig. 2) support.Support and mould thereof are put into baking oven carry out thermal finalization.Take memorial alloy as example, heat setting temperature is between 450 degree～550 degree Celsius, and the time is 2 to 30 minutes.Silk material diameter and stent diameter are less, and shaping time is shorter.Get one or more developing rings and be fixed to the relevant position of mount proximal end and far-end.The silk compact winding that perhaps x-ray is developed good becomes spring-like to be fixed to the relevant position of mount proximal end and far-end, is used for showing near-end and the remote location of support.At last the grid of support most proximal end or silk and delivery guidewire distal-most end are welded together and be made into the support finished product.
Processing method-2
Support such as Fig. 1 or 2 can have plurality of specifications (different-diameter and length) according to clinical needs.According to a certain particular design, at first a metal cylinder is processed into the mould that approaches very much with stent diameter, and goes out many parallel grooves according to Design and Machining.Get one or more materials in the staggered mode of passing through of forward-reverse spiral line, twine along groove and be woven into near-end and the stage casing is round tube shape all, and far-end is umbrella shape (Fig. 1) or cylindrical shape (Fig. 2) support.Support and mould thereof are put into baking oven carry out thermal finalization.Take memorial alloy as example, heat setting temperature is got involved between 450 degree～550 degree Celsius, and the time is 2 to 30 minutes.Silk material diameter and stent diameter are less, and shaping time is shorter.At this moment, use very sharp cutter according to designing the mount proximal end bevel cut.Adopt again laser-beam welding machine that a plurality of wire bonds that scatter are received on the silk of outer most edge.Get one or more developing rings and be fixed to the relevant position of mount proximal end and far-end.The silk compact winding that perhaps x-ray is developed good becomes spring to fill the relevant position that is fixed to mount proximal end and far-end, is used for showing near-end and the remote location of support.At last the grid of support most proximal end or silk and delivery guidewire distal-most end are welded together and be made into the support finished product.
The above only is preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from this utility model know-why; can also make some improvement and distortion, these improvement and distortion also should be considered as protection domain of the present utility model.The book that this paper gives an example understands several clinical practices, if without permission, support of the present utility model and induction system thereof is used for other clinical application, also is considered as infringement.
Claims (10)
1. the endovascular stent of a complex function is characterized in that, comprises that one is rack body netted, that also can discharge and retract from delivery conduit, and the near-end of rack body is open taper, and the middle part is tubular, and far-end is closing structure;
Rack body is to form by individual thread or multi-filament weave out netted or by the laser engraving machine engraving.
2. the endovascular stent of complex function according to claim 1, it is characterized in that, rack body by the silk material of one or more materials manually or braider braiding form, two interlaced silks are the bridging arrangements that mutually slide or without the hook joint structure of relative sliding at Nodes.
3. the endovascular stent of complex function according to claim 1 is characterized in that, also includes to be beneficial to the developing ring that develops under the x-ray developing ring and rack body mixed weaving or be arranged at respectively rack body far-end and near-end.
4. the endovascular stent of complex function according to claim 1 is characterized in that, the closing structure of described far-end is umbrella or tubbiness, and the closing structure side grid of far-end is greater than the grid on the rack body.
5. the endovascular stent of complex function according to claim 4 is characterized in that, the size of mesh opening of described far-end closing structure is between 200 microns and 1000 microns.
6. the endovascular stent of complex function according to claim 1 is characterized in that, described far-end closing structure material is degradation material.
7. the endovascular stent of complex function according to claim 1 is characterized in that, described rack body material is tweezer titanium alloy, cochrome, memorial alloy, rustless steel, Biodegradable material, degradable magnesium alloy or degradable ferroalloy.
8. the endovascular stent of complex function according to claim 3 is characterized in that, described developing ring material is pure platinum or its alloy, true yellow gold or its alloy, pure tungsten or its alloy, pure tantalum or its alloy.
9. the endovascular stent of complex function according to claim 1, it is characterized in that, described rack body near-end is connected with a delivery guidewire that is covered with dielectric film, comprises the linkage section of one section naked film on the described delivery guidewire with described rack body near-end junction.
10. the endovascular stent of complex function according to claim 9 is characterized in that, described rack body is delivered in the blood vessel of narrow or obstruction, as interim vasodilation support through described delivery conduit; Or deliver in the blood vessel that is stopped up by thrombosis through delivery conduit, by the far-end closing structure thrombosis is entangled taking-up; Or push to furcation cerebral aneurysm place through delivery conduit and discharge, and separate with described delivery guidewire through electrolysis, become the permanent support that stays in blood vessel and hold the turn that is released in the furcation cerebral aneurysm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220348344 CN202723910U (en) | 2012-07-18 | 2012-07-18 | Endovascula stent with complex function |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201220348344 CN202723910U (en) | 2012-07-18 | 2012-07-18 | Endovascula stent with complex function |
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| CN 201220348344 Expired - Fee Related CN202723910U (en) | 2012-07-18 | 2012-07-18 | Endovascula stent with complex function |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102764170A (en) * | 2012-07-18 | 2012-11-07 | 吕文峰 | Intravascular stent with complex functions |
| CN105455878A (en) * | 2016-01-26 | 2016-04-06 | 加奇生物科技（上海）有限公司苏州分公司 | Catching device |
| CN107773283A (en) * | 2016-08-31 | 2018-03-09 | 微创神通医疗科技（上海）有限公司 | Implant, implant preparation method and implant system |
| CN117100456A (en) * | 2023-10-18 | 2023-11-24 | 北京华脉泰科医疗器械股份有限公司 | Vascular stent and conveyor thereof |
-
2012
- 2012-07-18 CN CN 201220348344 patent/CN202723910U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102764170A (en) * | 2012-07-18 | 2012-11-07 | 吕文峰 | Intravascular stent with complex functions |
| CN102764170B (en) * | 2012-07-18 | 2015-09-16 | 吕文峰 | A kind of endovascular stent of complex function |
| CN105455878A (en) * | 2016-01-26 | 2016-04-06 | 加奇生物科技（上海）有限公司苏州分公司 | Catching device |
| CN107773283A (en) * | 2016-08-31 | 2018-03-09 | 微创神通医疗科技（上海）有限公司 | Implant, implant preparation method and implant system |
| CN117100456A (en) * | 2023-10-18 | 2023-11-24 | 北京华脉泰科医疗器械股份有限公司 | Vascular stent and conveyor thereof |
| CN117100456B (en) * | 2023-10-18 | 2024-02-02 | 北京华脉泰科医疗器械股份有限公司 | Vascular stent and conveyor thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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