CN103417258B - Intracranial vessel gets pin device - Google Patents
Intracranial vessel gets pin device Download PDFInfo
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- CN103417258B CN103417258B CN201210148897.3A CN201210148897A CN103417258B CN 103417258 B CN103417258 B CN 103417258B CN 201210148897 A CN201210148897 A CN 201210148897A CN 103417258 B CN103417258 B CN 103417258B
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- bolt device
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- protruding portion
- outer sheath
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Abstract
The invention provides a kind of intracranial vessel and get pin device, this is got pin device and comprises and get bolt device, guiding wire, push-and-pull seal wire and outer sheath, get bolt device to be connected with push-and-pull seal wire, mounted push-and-pull seal wire and get bolt device and held in outer sheath by pressure, wherein get bolt device form tube chamber and change between retrieving position and expanded position by the push-and-pull of push-and-pull seal wire, at retrieving position, getting bolt device is recycled in outer sheath, at expanded position, get bolt device and be pushed out outer sheath.Feature of getting pin device of the present invention is: get the inwardly protruding portion that bolt device is provided with some on its lumen wall.Get pin device according to of the present invention, in the removal process after catching thrombosis, can thrombosis be fixedly secured, improve and catch stability, prevent thrombus breaks loose.
Description
Technical field
The present invention relates to medical apparatus and instruments, be specifically related to a kind of medical apparatus and instruments getting involved blood vessel, particularly a kind of intracranial vessel gets pin device.
Background technology
Acute ischemic cerebral apoplexy causes due to the unexpected obstruction of brain blood flow the neural tissue injury that local brain tissue ischemic necrosis causes.70% ~ 80% has serious symptoms to need to do the obstruction that arteriographic patient can see embolus or thrombosis.Compared with the fatality rate of great vessels embolism 53% ~ 92%.
The logical again of blood vessel is the key for the treatment of acute ischemic cerebral apoplexy.The conventional method of current treatment acute ischemic cerebral apoplexy comprises two large classes: bolt got by intervention thrombolytic and machinery.
Getting involved thrombolytic is that conduit injects thrombolytics near the endovascular focus at pathological changes place, forms very high thrombolytics concentration instantaneously, thus accelerates thromboembolism speed, and then increase the chance of revascularization in focus local.But vein or Arterial thrombolysis treat the near-end thrombosis poor effect to internal carotid artery end and middle cerebral artery M 1 segment, and this is excessive relevant with blood clot absolute volume to a great extent.Correlational study finds, average external volume (0.4ml) order of magnitude larger than the volume of the thrombosis (0.03ml) of middle cerebral artery M2 section of the thrombosis of internal carotid artery end.So large blood clot load obviously can resist the Digestion of streptokinase.Therefore, need very heavy dose of Thrombolytic Drugs just can make so large dissolution of blood clot, but easily like this cause various complication, risk is higher.
Machinery is got bolt and is comprised following several method: thrombectomy, and it is comparatively thorough that this method gets bolt, but excessive to vascular damaged, very easily causes various concurrent inflammation; The broken bolt of laser, this method operation easier is large, and laser energy is too low then invalid, the too high then injured blood vessel of energy, and equally easily causes various complication; Catching device gets bolt, and this method is simple to operate, very little to vascular damaged, but often can not entangle blood clot; Catch bolt net and get bolt, this method is simple to operate, but bolt dictyosome is long-pending cannot be used comparatively greatly in intracranial vessel because catching.
Chinese utility model patent 03210077.9 discloses a kind of elliposoidal blood vessel distal protector; it comprises and is provided with the fusiform elliposoidal protector main body of skeleton and the polymeric membrane of porous; polymeric membrane covers skeleton top; filter by solid particles such as the speckle come off or the thrombosis formed to allow normal blood flow to pass through, thus protection downstream blood vessel is not blocked.Chinese utility model patent 200620164685.4 discloses a kind ofly gets bolt device for artery of lower extremity, it is made up of umbrella, spindle rod, push-pull bar, internal and external casing, overcoat tube core, umbrella is made up of shape-memory alloy wire, the three-jaw short by two length one is formed by certain angle and dry the welding together of main shaft, and umbrella periphery is with network structure, to filter thrombosis.What U.S. Patent application 2007/0005103,2008/0243170,2011/0098738 also disclosed like configurations catches pin device, its drainage screen or film of including framework and being attached to framework, in order to filter thrombosis.Above-mentioned to get pin device volume comparatively large, thus cannot use in intracranial vessel.
Chinese invention patent application 01114889.6 discloses a kind of recyclable temporary thrombus filter that can be used for intracranial vessel, and it is made up of filter, guide head, guide bar, connector and epitheca, and its middle filtrator is woven by shape-memory alloy wire and forms.U.S. Patent application 2011/0160763 also disclose a kind of can be used for intracranial vessel get pin device, it comprises skeleton, and skeleton can be woven by shape-memory alloy wire and form, to catch thrombosis.These get pin device when reclaiming after catching thrombosis, thrombosis fix insecure, easily come off, and complex structure.
Therefore, need a kind of intracranial vessel of improvement to get pin device, this device should meet following condition: 1) get bolt process simply, conveniently; 2) volume is little, can be transported to the distal vessels of intracranial easily; 3) adherent property and compliance good, capture rate is high, and support force is moderate, and getting in bolt process can not injured blood vessel inwall; 4) when reclaiming after catching thrombosis, thrombosis fixation, difficult drop-off.
Summary of the invention
For this reason, the present invention proposes a kind of intracranial vessel and gets pin device, and this is got pin device and comprises and get bolt device, guiding wire, push-and-pull seal wire and outer sheath.Guiding wire is used for importing Ink vessel transfusing, gets bolt device and is then connected with push-and-pull seal wire, mounted push-and-pull seal wire with get bolt device and held in outer sheath by pressure.Get bolt device form tube chamber and change between retrieving position and expanded position by the push-and-pull of push-and-pull seal wire, at retrieving position, getting bolt device is recycled in outer sheath, at expanded position, gets bolt device and is pushed out outer sheath.Feature of getting pin device of the present invention is: get the inwardly protruding portion that bolt device is provided with some on its lumen wall.Get pin device according to of the present invention, in the removal process after catching thrombosis, can thrombosis be fixedly secured, improve and catch stability, prevent thrombus breaks loose.
According to the present invention, the arrangement position in these inwardly protruding portions and/or highly can be mutually the same, also can be different from each other.Such as, the arrangement position of lobe can be distributed on same layer in tube chamber radial direction, may also be and is distributed on different layers in tube chamber radial direction; Lobe can be dense distribution at the dowel place of getting bolt device, also can be interval or be dislocatedly distributed, or symmetrical; The height of lobe can be that all identical or height is interspersed, and also can be to change in the mode little by little increased from the near-end getting bolt device to far-end or reduce.According to the present invention, the length of lobe can be 1 ~ 3mm, and inwardly protruded height can be 0.5 ~ 2mm.
According to the present invention, get bolt device and by cut, there is the metal pipe material of shape memory effect or there is elastomeric macromolecule tubing and to be formed and through heat treatment shaping.Get bolt device also can have the metal of shape memory effect by cutter or there is elastomeric macromolecular sheet material, then curling, heat treatment shaping and being formed.The compliance and the adherent property that make to get bolt device are like this good.According to the present invention, the length of getting bolt device can be 15 ~ 40mm, and diameter can be 2 ~ 6mm, and the thickness of tubing or sheet material can be 0.05 ~ 0.3mm.
According to the present invention, get bolt device in expanded position entirety near cylindrical.Make to get bolt utensil like this and have good radial support power and shape memory effect, there is be discharged into blood vessel from sheath pipe after the adherent property of good blood vessel.
Preferably, the opening ovalize of bolt device in its proximal end is got.Can ensure effectively to catch area when bolt device is got in push-and-pull like this.
Preferably, the push-and-pull seal wire getting pin device of the present invention is arranged as with the traction junction point getting bolt device and presses close to blood vessel wall at expanded position.Effective capture rate of large volume thrombosis can be improved like this.
Intracranial vessel according to the present invention gets pin device, utilizes and form inwardly protruding portion to fixedly secure thrombosis on the lumen wall getting bolt device, add thrombosis and catch stability, prevent thrombus breaks loose.In addition, intracranial vessel of the present invention gets pin device structure simply, gets bolt process conveniently easily.
Accompanying drawing explanation
By with reference to the accompanying drawings to the detailed description that the embodiment of the present invention is carried out, feature of the present invention and advantage thereof will be apparent.In the drawings:
Fig. 1 is the general illustration of getting pin device of the embodiment of the present invention.
Fig. 2 is the schematic diagram getting bolt device with developing mark of the embodiment of the present invention.
Fig. 3-8 shows the embodiment that difference of getting the inwardly protruding portion of bolt device of the present invention is arranged.
Detailed description of the invention
Embodiments of the invention are described in detail referring to Fig. 1-8.
For convenience of description, below describe and employ term " near-end " and " far-end ", wherein " near-end " refers to from the one end close to operating side, and far-end refers to the one end away from operating side.
Fig. 1 shows the general illustration of getting pin device 1, and it comprises guiding wire 2, push-and-pull seal wire 3, outer sheath 4 and gets bolt device 5.Get bolt device 5 to be connected with push-and-pull seal wire 3, mounted push-and-pull seal wire 3 and get bolt device 5 and held in outer sheath 4 by pressure.Get bolt device 5 also form tube chamber 6 and change between retrieving position and expanded position by the push-and-pull of push-and-pull seal wire 3, at retrieving position, getting bolt device 5 is recovered in outer sheath 4, at expanded position, getting bolt device 5 is pushed out into outside outer sheath 4, and lumen wall is provided with the inwardly protruding portion 7 of some.In addition, as shown in Figure 2, get on bolt device 5 and be also provided with developing mark 8, get bolt device 5 to help location.Outer sheath is also provided with developing mark 10, as shown in Figure 1.
Fig. 3-8 shows the embodiment that the present invention gets the difference layout in the inwardly protruding portion of bolt device of getting of pin device.In order to for simplicity, in figure, do not show developing mark 8.The arrangement position of these lobe 7, highly can be mutually the same, also can be different from each other.The arrangement position of these lobe 7 can be positioned on same layer in tube chamber radial direction, may also be on different layers, such as, can be distributed in the dowel place of getting bolt device 5 thick and fast, as shown in Figure 3; Can be symmetrical, as shown in Figure 5; Also can be interval or dislocation distribute, as shown in Figure 4 and Figure 6.The height of lobe 7 can be all identical, and as shown in Figure 5 and Figure 6, or height is interspersed, and as shown in Figure 8, also can be little by little increase from the near-end getting bolt device 5 to far-end or reduce, as shown in Figure 7.The appropriate length of lobe is 1 ~ 3mm, is highly 0.5 ~ 2mm.In an embodiment, lobe cross section is approximate half-circular.
Get bolt device 5 by cut have shape memory effect metal pipe material (as NiTi alloy) and formed and through heat treatment shaping.Certainly, get bolt device 5 also can have shape memory effect metal sheet by cutter, then curling, heat treatment shaping and being formed.The suitable dimension getting bolt device 5 is as follows: length 15 ~ 40mm, diameter 2 ~ 6mm, the thickness 0.05 ~ 0.3mm of tubing or sheet material.Metal material can be replaced with elastomeric macromolecular material.Above-mentioned suitable material is well-known to those skilled in the art, is not described in detail at this.Lobe 7 is formed in the following manner: one cut above-mentioned material and form the part in inwardly protruding portion to be formed, then utilize mould by these parts to intrinsic pressure to form lobe, afterwards with get heat treatment shaping together with bolt device 5 remainder, regulated before heat treatment shaping to intrinsic pressure amplitude and angle by mould.Then, bolt device 5 will be got and be connected with push-and-pull seal wire 3, mounted push-and-pull seal wire 3 and get bolt device 5 and held in outer sheath 4 by pressure.
As viewed in figures 5-8, bolt device 5 is got in expanded position entirety near cylindrical.Make to get bolt device 5 like this and there is good radial support power and shape memory effect, there is be discharged into blood vessel from outer sheath 4 after the adherent property of good blood vessel.And, get opening 9 ovalize of bolt device 5 in its proximal end.Can ensure effectively to catch area, as shown in Fig. 1 and Fig. 5-8 when bolt device 5 is got in push-and-pull like this.
Push-and-pull seal wire 3 is arranged as with the traction junction point getting bolt device 5 presses close to blood vessel wall at expanded position.Effective capture rate of large volume thrombosis can be improved like this.
The using method of getting pin device 1 of the embodiment of the present invention is as follows:
In interventional therapy, first by angiography determination intracranial vessel lesion locations, then will get pin device 1 from femoral artery or brachial artery and import Ink vessel transfusing, make guiding wire 2 through lesion locations, by guiding wire 2, outer sheath 4 is passed lesion locations and located by the developing mark 10 in outer sheath 4, period gets bolt device 5 and is positioned at outer sheath 4 always, is in retrieving position.Then, withdraw guiding wire 2, bolt device 5 will be got by push-and-pull seal wire 3 and shift outer sheath 4 far-end onto, and withdraw outer sheath 4 to lesion locations, discharge so that bolt device 5 will be got, can be located by the developing mark 8 got on bolt device 5 and get bolt device 5.Due to the shape memory effect of shape memory metal or the elastic reaction of high resiliency macromolecular material, get bolt device 5 and be transformed into expanded position under the effect of blood heat, recline blood vessel wall.Then, the position of fixing outer sheath 4, pulls push-and-pull seal wire 3, withdraws to get bolt device 5 and catch thrombosis, is recovered in outer sheath 4 until will get bolt device 5.Finally, pin device 1 entirety will be got and withdraw from outside human body, and complete and get bolt process.
The key of getting pin device according to the intracranial vessel of the embodiment of the present invention is to be provided with the inwardly protruding portion forming some layer distributed in tube chamber, the arrangement position of these lobe, highly can be mutually the same or different.This design can firmly be held the thrombosis of catching, and effectively prevents from getting pin device the coming off of thrombosis in removal process.
It will be understood by those skilled in the art that above description is exemplary.When not deviating from thought of the present invention and scope, those skilled in the art still can make numerous modifications and variations to the present invention.
Claims (7)
1. an intracranial vessel gets pin device, this is got pin device and comprises and get bolt device, guiding wire, push-and-pull seal wire and outer sheath, guiding wire is in order to guide at Ink vessel transfusing, get bolt device to be then connected with push-and-pull seal wire, mounted push-and-pull seal wire and get bolt device and held in outer sheath by pressure, wherein get bolt device form tube chamber and change between retrieving position and expanded position by the push-and-pull of push-and-pull seal wire, at retrieving position, getting bolt device is recycled in outer sheath, at expanded position, get bolt device and be pushed out outer sheath, it is characterized in that: get the inwardly protruding portion that bolt device is provided with some on its lumen wall, the arrangement position in described inwardly protruding portion is arranged to: make inwardly protruding portion dense distribution at the dowel place of getting bolt device, or it is symmetrical, or interval or be dislocatedly distributed, and
Get bolt device by cut, there is the metal pipe material of shape memory effect or there is elastomeric macromolecule tubing and to be formed and through heat treatment shaping, or have the metal of shape memory effect by cutter or there is elastomeric macromolecular sheet material, then curling, heat treatment shaping and being formed.
2. intracranial vessel according to claim 1 gets pin device, the arrangement position in wherein said inwardly protruding portion and/or be highly same to each other or different to each other.
3. intracranial vessel according to claim 2 gets pin device, and the arrangement position in wherein said inwardly protruding portion is arranged to: inwardly protruding portion is on same layer in tube chamber radial direction, or is on different layers in tube chamber radial direction.
4. intracranial vessel according to claim 2 gets pin device, and the height placement in wherein said inwardly protruding portion becomes to make inwardly protruding portion height to be interspersed, or changes in the mode little by little increased from the near-end getting bolt device to far-end or reduce.
5. the intracranial vessel according to any one of claim 1-4 gets pin device, wherein gets bolt device in expanded position entirety near cylindrical.
6. the intracranial vessel according to any one of claim 1-4 gets pin device, wherein gets the opening ovalize of bolt device in its proximal end.
7. the intracranial vessel according to any one of claim 1-4 gets pin device, and wherein push-and-pull seal wire is arranged as with the traction junction point getting bolt device and presses close to blood vessel wall at expanded position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210148897.3A CN103417258B (en) | 2012-05-14 | 2012-05-14 | Intracranial vessel gets pin device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210148897.3A CN103417258B (en) | 2012-05-14 | 2012-05-14 | Intracranial vessel gets pin device |
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| CN103417258A CN103417258A (en) | 2013-12-04 |
| CN103417258B true CN103417258B (en) | 2015-11-25 |
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| CN201210148897.3A Active CN103417258B (en) | 2012-05-14 | 2012-05-14 | Intracranial vessel gets pin device |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104068909A (en) * | 2013-03-26 | 2014-10-01 | 上海微创医疗器械（集团）有限公司 | Intracranial vascular thrombus retrieval machine and thrombus retrieval device |
| CN108073778B (en) * | 2016-11-07 | 2022-03-04 | 上海宝信软件股份有限公司 | Automatic cutting method and system for improving yield of FCL (fiber channel laser) unit |
| CN107212913B (en) * | 2017-04-30 | 2020-10-30 | 沈阳新智源医疗用品有限公司 | Support thrombectomy device with thrombus capture component |
| CN106955140B (en) * | 2017-05-09 | 2023-07-25 | 心凯诺医疗科技(上海)有限公司 | Thrombus taking support and thrombus taking device |
| CN108042176A (en) * | 2018-01-11 | 2018-05-18 | 恩脉（上海）医疗科技有限公司 | Take pin device |
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| WO2005055878A2 (en) * | 2003-12-08 | 2005-06-23 | Boston Scientific Limited | One piece loop and coil |
| WO2006021407A2 (en) * | 2004-08-23 | 2006-03-02 | Phenox Gmbh | Device for the removal of thromboses |
| CN101027004A (en) * | 2004-09-10 | 2007-08-29 | 半影公司 | System and method for treating ischemic stroke |
| CN101396295A (en) * | 2007-09-29 | 2009-04-01 | 成正辉 | Blood thrombus and embolus resectoscope |
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2012
- 2012-05-14 CN CN201210148897.3A patent/CN103417258B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005055878A2 (en) * | 2003-12-08 | 2005-06-23 | Boston Scientific Limited | One piece loop and coil |
| WO2006021407A2 (en) * | 2004-08-23 | 2006-03-02 | Phenox Gmbh | Device for the removal of thromboses |
| CN101027004A (en) * | 2004-09-10 | 2007-08-29 | 半影公司 | System and method for treating ischemic stroke |
| CN101396295A (en) * | 2007-09-29 | 2009-04-01 | 成正辉 | Blood thrombus and embolus resectoscope |
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| CN103417258A (en) | 2013-12-04 |
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Effective date of registration: 20160223 Address after: 201318 Shanghai city wide 222 Lane 16 Pudong New Area Road Patentee after: Minimally invasive Shentong medical technology (Shanghai) Co., Ltd. Address before: 201203 Shanghai City Newton Road, Pudong New Area Zhangjiang hi tech Park No. 501 Patentee before: Shanghai MicroPort Medical Equipment (Group) Co., Ltd. |