CN201595959U - Embolism protector for protecting blood vessels of brain - Google Patents
Embolism protector for protecting blood vessels of brain Download PDFInfo
- Publication number
- CN201595959U CN201595959U CN2010201135588U CN201020113558U CN201595959U CN 201595959 U CN201595959 U CN 201595959U CN 2010201135588 U CN2010201135588 U CN 2010201135588U CN 201020113558 U CN201020113558 U CN 201020113558U CN 201595959 U CN201595959 U CN 201595959U
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- guide wire
- protector
- pack
- distal guide
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Abstract
The utility model discloses an embolism protector for protecting blood vessels of a brain. The embolism protector comprises a distal guide wire, a proximal guide wire and a pack, wherein the pack is a nickel-titanium alloy framework support formed by a plurality of nickel-titanium alloy rods and capable of radially retracting, the distal guide wire and the proximal guide wire are connected through a retaining sleeve, the distal guide wire and the proximal guide wire are respectively provided with a developing marker capable of relatively sliding, and two ends of a nickel-titanium alloy are respectively fixed on the two developing markers. The nickel-titanium alloy framework support with higher support force in the embolism protector has stronger support force leads fit between the pack and the inner wall of a blood vessel to be more perfect, the pack also has woven meshes of clinical importance, thereby thrombi can be effectively captured without generating larger pressure differential in the blood vessel, the blood vessels of a brain in surgery can be effectively protected, and the surgery can be more secure.
Description
Technical field
This utility model belongs to the neural medical instruments field of getting involved, and relates in particular to and a kind ofly can effectively catch embolus in operation process, makes the safer thromboembolism protector that is used for the cerebrovascular protection of operation (Embolic Protection Device is called for short EPD).
Background technology
Cerebral infarction is the disease of serious harm life security, and wherein modal reason is exactly that carotid arterial atherosclerosis is narrow.When the treatment carotid arterial atherosclerosis, as implant frame etc., can produce a large amount of thrombosis or fragment, these microembolis enter the postoperative brain soldier that may cause behind the cerebral blood flow, for being that the patient of the carotid artery stenosis of purpose is beyond affordability, especially to those asymptomatic patients with the prevention apoplexy.Therefore, use the thromboembolism protector can effectively catch the embolus that produces in the operation process, guarantee the perfusion that blood flow can continue simultaneously, cerebrovascular is protected.
The cerebrovascular protector of prior art mainly is divided three classes, that is: distal balloon catheter blocking-up type, proximal balloon blocking-up type and far-end filter screen type.Wherein the principle of distal balloon catheter blocking-up type EPD is to open sacculus at the far-end internal carotid artery, the temporary interruption blood flow flows to brain from the pathological changes section, so just blocked embolus and enter intracranial vessel in operating process, this system can absorb the blood flow that near-end may contain fragment by Carotid sheath pipe before blood flow is logical again.Its shortcoming is that blood flow is blocked fully and produced symptoms of cerebral ischemia, microemboli may enter intracranial vessel by the external carotid artery communicating branch, the embolus of sacculus and blood vessel contact site possibly can't exhaust, can't show angiopoietic immediate effect by radiography, internal carotid artery spasm and interlayer etc. during the sacculus blocking-up; Proximal balloon blocking-up type EPD utilizes two sacculus successively to block external carotid artery and common carotid artery exactly, far-end in blocking-up comprises that the carotid bifuracation place of stenotic lesion section and internal carotid artery created a no blood or adverse current state, thereby reached the purpose of before seal wire and other conveying equipments pass the pathological changes section, promptly having set up protective measure, shortcoming is to operate comparatively loaded down with trivial detailsly, can't show angiopoietic immediate effect etc. by radiography when easily causing the blocking-up of vasospasm, sacculus; EPD is just as the Rhizoma Arisaematis that opens the internal carotid artery between pathological changes section and brain for far-end filter screen type; catch in the operation process and cause speckle fragment and the thrombosis that comes off because of operation; it is to be employed maximum a kind of EPD at present; the Angioguard of Cordis for example; the Filter Wire EZ of Boston; the Rx AccuNet of Abbott and Emboshield etc. are a kind of macromolecular filter membranes that has the shape memory metal skeleton; though support force and stickiness are preferably arranged; but the blood vessel pressure reduction that produces is bigger; the SpiderRX of Ev3 is the basket that adopts the braiding of Nitinol filament to form in addition; though the pressure reduction that this protector produces in blood vessel is less; but the radial support power of basket is less, and is good inadequately with the stickiness of blood vessel.
The utility model content
In order to solve the problems referred to above of prior art; the purpose of this utility model provides a kind of far-end filter screen type thromboembolism protector, can effectively catch thrombosis, and it is poor can not produce too big intravascular pressure again; can in operation process, protect cerebrovascular effectively, make operation safer.
To achieve these goals, this utility model provides a kind of thromboembolism protector that is used for the cerebrovascular protection, comprises distal guide wire, near-end seal wire and pack, and described pack is supported by the nickel-titanium alloy framework of the energy radial contraction that many Nitinol bars are formed.
As preferably, described Nitinol bar is 6.
As preferably, described pack is the filter screen that the nitinol alloy wire weaving becomes.
As preferably, the opening of described filter screen is provided with closed development filament, and described development filament launches sine curve or and the cosine curve that the back be the rule variation.
As preferably, described distal guide wire and described near-end seal wire are connected on the fixed sleeving, respectively be provided with a development sign indicating number that can slide relatively on described distal guide wire and the described near-end seal wire and carve, the two ends of described Nitinol bar are separately fixed at described two sign indicating numbers that develop and engrave.
As preferably, it is the bilayer sleeve of being made by platinum, gold, platinum-tungsten alloys or Nitinol that described two sign indicating numbers that develop are carved.
As preferably, described distal guide wire and described near-end seal wire are connected on the described fixed sleeving by welding or bonding mode, also can be other any type of connected mode.
As preferably, the end of described distal guide wire is provided with the metal coating ball cap.
As preferably, described metal coating ball cap is smooth semi-spherical shape.
As preferably, the outer surface of described near-end seal wire is coated with lubricious.
The beneficial effects of the utility model are; the nickel-titanium alloy framework that the thromboembolism protector has strong support force makes pack and blood vessel fit more perfect; and pack has the braided mesh of clinical meaning simultaneously; therefore it is poor effectively to catch thrombosis and can not produce too big intravascular pressure; in operation process, protect cerebrovascular effectively, make operation safer.The doctor uses not only convenient but also safety of this thromboembolism protector operation.
Description of drawings
Fig. 1 is the structural representation that is used for the thromboembolism protector of cerebrovascular protection of the present utility model;
Fig. 2 is the shape sketch map after the development filament of Fig. 1 launches;
Fig. 3 is the sketch map of the cross section carved of the development sign indicating number of Fig. 1.
The specific embodiment
Describe embodiment of the present utility model in detail below in conjunction with accompanying drawing.
As shown in Figure 1 to Figure 3, the thromboembolism protector that is used for the cerebrovascular protection of present embodiment comprises distal guide wire 8, near-end seal wire 1 and pack 6, and described pack 6 is supported by the nickel-titanium alloy framework 3 of the energy radial contraction that many Nitinol bars (such as 6) are formed.The filter screen that pack 6 becomes for the nitinol alloy wire weaving, the scope in braiding twine footpath is 0.01mm～0.10mm, and the pore diameter range of filter screen is 10 μ m～200 μ m, and is less near the aperture of filter screen far-end, the aperture at filter screen umbrella mouth place (opening) is bigger, and the aperture of filter screen regional area is uniform.The development effect that the opening of filter screen is composed of the closure filament 5 that develops preferably, the diameter of this development filament 5 can be bigger slightly than the diameter of braiding twine (0.02mm～0.10mm), material can be platinum, any one possible material of gold or platinum-tungsten alloys, the shape of seeing from the side after this development filament 5 launches is that a rule changes sine or cosine curve.Nickel-titanium alloy framework 3 radial contraction make the volume energy of pack 6 be compressed to minimum.
Minimum in order to drop to the injury of blood vessel, the end of distal guide wire 8 has ultra-soft head section 9 and smooth protection ball cap 10, thereby can make umbrella arrive the lesion region of minute blood vessel, and common smooth protection ball cap 10 is smooth semi-spherical shape.
In order to make near-end seal wire 1 have good blood compatibility and smoothness, the outer surface of near-end seal wire can plate the material that lubricious, lubricious material can be any appropriate such as PTFE, PET, ETFE.
The thromboembolism protector that is used for the cerebrovascular protection of present embodiment has the filter screen (pack 6) that softish nitinol alloy wire weaves, and can keep blood perfusion for a long time, and blood vessel pressure reduction is little; Nickel-titanium alloy framework 3 with strong support force makes pack 6 more perfect with the blood vessel applying, can catch thrombosis effectively; Doctor's operation is convenient in unique development design, has improved safety; Pack 6 compression back volumes are very little, can select thinner conveying for use or reclaim the sheath pipe.Therefore the cerebrovascular protection in the time of can being widely used in performing the operation makes operation safer.
Above embodiment is an exemplary embodiment of the present utility model only, is not used in restriction this utility model, and protection domain of the present utility model is defined by the claims.Those skilled in the art can make various modifications or be equal to replacement this utility model in essence of the present utility model and protection domain, this modification or be equal to replacement and also should be considered as dropping in the protection domain of the present utility model.
Claims (10)
1. a thromboembolism protector that is used for the cerebrovascular protection comprises distal guide wire, near-end seal wire and pack, it is characterized in that, described pack is supported by the nickel-titanium alloy framework of the energy radial contraction that many Nitinol bars are formed.
2. the thromboembolism protector that is used for the cerebrovascular protection according to claim 1 is characterized in that described Nitinol bar is 6.
3. the thromboembolism protector that is used for the cerebrovascular protection according to claim 1 is characterized in that, the filter screen that described pack becomes for the nitinol alloy wire weaving.
4. the thromboembolism protector that is used for the cerebrovascular protection according to claim 3 is characterized in that the opening of described filter screen is provided with closed development filament, and it is sine curve or and the cosine curve that rule changes that described development filament launches the back.
5. according to the described thromboembolism protector that is used for the cerebrovascular protection of one of claim 1 to 4; it is characterized in that; described distal guide wire and described near-end seal wire are connected on the fixed sleeving; respectively be provided with a development sign indicating number that can slide relatively on described distal guide wire and the described near-end seal wire and carve, the two ends of described Nitinol bar are separately fixed at described two sign indicating numbers that develop and engrave.
6. the thromboembolism protector that is used for the cerebrovascular protection according to claim 5 is characterized in that, it is the bilayer sleeve of being made by platinum, gold, platinum-tungsten alloys or Nitinol that described two sign indicating numbers that develop are carved.
7. the thromboembolism protector that is used for the cerebrovascular protection according to claim 5 is characterized in that described distal guide wire and described near-end seal wire are connected on the described fixed sleeving by welding or bonding mode.
8. the thromboembolism protector that is used for the cerebrovascular protection according to claim 1 is characterized in that the end of described distal guide wire is provided with the metal coating ball cap.
9. the thromboembolism protector that is used for the cerebrovascular protection according to claim 8 is characterized in that described metal coating ball cap is smooth semi-spherical shape.
10. the thromboembolism protector that is used for the cerebrovascular protection according to claim 1 is characterized in that the outer surface of described near-end seal wire is coated with lubricious.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201135588U CN201595959U (en) | 2010-02-09 | 2010-02-09 | Embolism protector for protecting blood vessels of brain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201135588U CN201595959U (en) | 2010-02-09 | 2010-02-09 | Embolism protector for protecting blood vessels of brain |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201595959U true CN201595959U (en) | 2010-10-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201135588U Expired - Lifetime CN201595959U (en) | 2010-02-09 | 2010-02-09 | Embolism protector for protecting blood vessels of brain |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201595959U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106175978A (en) * | 2016-08-01 | 2016-12-07 | 罗中华 | Guide gip filter |
| CN108366853A (en) * | 2015-10-09 | 2018-08-03 | 特伦沃斯医疗有限公司 | Device and method catheter-based |
| CN110430839A (en) * | 2017-01-18 | 2019-11-08 | 波士顿科学国际有限公司 | Embolization protective device |
| CN111839806A (en) * | 2020-07-31 | 2020-10-30 | 上海心玮医疗科技有限公司 | High-compliance plug protector and filter screen manufacturing method thereof |
| CN112545726A (en) * | 2021-02-24 | 2021-03-26 | 北京泰杰伟业科技有限公司 | Cutting support and vascular stenosis treatment system |
| CN112717260A (en) * | 2020-11-20 | 2021-04-30 | 北京泰杰伟业科技有限公司 | Far-end umbrella protection system |
| CN114305590A (en) * | 2022-03-16 | 2022-04-12 | 北京华脉泰科医疗器械股份有限公司 | Far-end protector |
| WO2023241300A1 (en) * | 2022-06-15 | 2023-12-21 | 神途医疗科技(上海)有限公司 | Anti-thrombus protection device and medical instrument |
| WO2024060892A1 (en) * | 2022-09-22 | 2024-03-28 | 神途医疗科技(上海)有限公司 | Embolism protection apparatus and medical device |
-
2010
- 2010-02-09 CN CN2010201135588U patent/CN201595959U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108366853A (en) * | 2015-10-09 | 2018-08-03 | 特伦沃斯医疗有限公司 | Device and method catheter-based |
| CN106175978A (en) * | 2016-08-01 | 2016-12-07 | 罗中华 | Guide gip filter |
| CN110430839A (en) * | 2017-01-18 | 2019-11-08 | 波士顿科学国际有限公司 | Embolization protective device |
| CN111839806A (en) * | 2020-07-31 | 2020-10-30 | 上海心玮医疗科技有限公司 | High-compliance plug protector and filter screen manufacturing method thereof |
| CN112717260A (en) * | 2020-11-20 | 2021-04-30 | 北京泰杰伟业科技有限公司 | Far-end umbrella protection system |
| CN112545726A (en) * | 2021-02-24 | 2021-03-26 | 北京泰杰伟业科技有限公司 | Cutting support and vascular stenosis treatment system |
| CN114305590A (en) * | 2022-03-16 | 2022-04-12 | 北京华脉泰科医疗器械股份有限公司 | Far-end protector |
| WO2023241300A1 (en) * | 2022-06-15 | 2023-12-21 | 神途医疗科技(上海)有限公司 | Anti-thrombus protection device and medical instrument |
| WO2024060892A1 (en) * | 2022-09-22 | 2024-03-28 | 神途医疗科技(上海)有限公司 | Embolism protection apparatus and medical device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101006 |
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| CX01 | Expiry of patent term |