CN208838087U - A kind of thrombus withdrawing device - Google Patents
A kind of thrombus withdrawing device Download PDFInfo
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- CN208838087U CN208838087U CN201721919680.2U CN201721919680U CN208838087U CN 208838087 U CN208838087 U CN 208838087U CN 201721919680 U CN201721919680 U CN 201721919680U CN 208838087 U CN208838087 U CN 208838087U
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Abstract
The utility model discloses a kind of thrombus withdrawing devices, including push seal wire, proximal end development silk ring, memorial alloy silk screen and the distal end development silk ring set gradually, it is successively arranged the first obstruction film, the second obstruction film in memorial alloy silk screen, is equipped in the distal portions of memorial alloy silk screen and stops coating.The thrombus withdrawing device of the utility model is successively arranged the first obstruction film, the second obstruction film in memorial alloy silk screen, it is equipped in the distal portions of memorial alloy silk screen and stops coating, by the way that triple obstructions are arranged, so that when using the thrombus withdrawing device removal of thromboses of the utility model, no thrombus residual, when device is withdrawn without thrombus breaks loose.
Description
Technical field
The utility model relates to interventional therapy the field of medical instrument technology, are suitable for more particularly, to one kind neurovascular
Thrombus withdrawing device.
Background technique
Acute ischemic cerebral apoplexy (Acute Ischemic Stroke, AIS) is clinically common disease and frequently-occurring disease, it
Have the characteristics that disease incidence is high, the death rate is high.Disease incidence ranking the first in the world of Chinese cerebral apoplexy, every year because of Stroke Death people
For number more than 2,000,000, the death rate is 4-5 times of American-European countries.Cerebral apoplexy disability rate also with higher and recurrence rate, clinical statistics
Show that Stroke Death rate is 20%-30%, most in people of surviving to have sequelae, about 75% loses labor in various degree
Kinetic force, wherein severe disabled people accounts for about 40%.
Intervention apparatus treatment mainly passes through DSA (Digital Subtraction Angiography) X imaging system,
It determines endovascular embolism position, intervention apparatus is transported to behind embolism position using neural seal wire and microtubular and takes out thrombus
In vitro, so that the blood vessel of blocking be made to restore unimpeded.Currently, the intervention for AIS exploitation takes bolt device product more, according to mainstream
Intervention takes the shape and function way of realization of bolt instrument, can be classified as: spiral shape, sieve type, brush type, suction type, branch
Frame type.The common defects of these main products are that have residual and thrombus to fall off after taking bolt when withdrawing, and are caused not to endangium
With the damage of degree.Neural thrombus is using internal carotid, arteria cerebri media, vertebral artery and basal arteries as predilection site, acute blood
The state of bolt is mostly greasy lubricious state, and simple metal takes bolt bracket to be difficult to capture completely.
Therefore, it is necessary to a kind of improved interventions to take bolt instrument, solve the defect of existing product, expansion instrument takes the clinic of bolt
Using.
Utility model content
The purpose of this utility model is to provide a kind of thrombus withdrawing devices.
A kind of thrombus withdrawing device, including the push seal wire, proximal end development silk ring, memorial alloy silk screen and remote set gradually
Development silk ring in end is successively arranged the first obstruction film, the second obstruction film, in the distal end of memorial alloy silk screen in memorial alloy silk screen
Part, which is equipped with, stops coating.
Further, the material of the push seal wire is superlastic austenite Ultimum Ti.Thrombus would generally be taken out
Device is fitted into protection coil pipe and is stored, using superlastic austenite Ultimum Ti push seal wire compared with stainless steel wire,
It is straight without imitating, it is unlikely to deform, can store for many years and indeformable.
Further, the push seal wire diameter 0.35-0.5mm.
Further, the proximal end development silk ring is the helical ring that push seal wire and memorial alloy silk screen junction is arranged in
Shape object, surface have TPU coating.Medical Polyurethane Elastomer has good extensibility and flex stiffiness, and intensity is high, wear-resisting
Damage, good biocompatibility act on, without aberration inducing without allergic reaction, and blood compatibility, antithrombotic property are good, and not blood injury
Ingredient, while also there is excellent physical mechanical property and processing performance.
Further, develop silk ring length 1.5-2mm, diameter 0.01-0.03mm for the proximal end.
Further, the proximal end development silk ring is that platinumiridio silk is entwined.
Further, the closed loop configuration that the memorial alloy silk screen is made of the grid of multiple helical arrangements, grid are handed over
Put arrangement of avoiding the peak hour.
Further, the memorial alloy silk screen diameter 3-6mm, wall thickness 0.05mm, the gradient α of grid intersection point are 3 ° -5 °,
The distance between the radian concave point and salient point of adjacent mesh L is 3mm.
Further, the material of the memorial alloy silk screen is Ultimum Ti.
Further, the first obstruction film is that TPU is used between the TPU membrane with curvature, with memorial alloy silk screen
Solution is adhesively fixed.
Further, described first film thickness 0.01mm, diameter 2-6mm are stopped.
Further, the TPU membrane that the first obstruction film is made of major diameter front end and minor diameter bottom.Preferably,
Diameter 3-6mm, the high 4-6mm of major diameter front end, diameter 2-3mm, the high 2-4mm of minor diameter bottom.
Further, the second obstruction film is that TPU is used between the TPU membrane with curvature, with memorial alloy silk screen
Solution is adhesively fixed.
Further, described second film thickness 0.01mm, diameter 2-6mm are stopped.
Further, the TPU membrane that the second obstruction film is made of major diameter front end and minor diameter bottom.Preferably,
Diameter 3-6mm, the high 4-6mm of major diameter front end, diameter 2-3mm, the high 2-4mm of minor diameter bottom.
Further, the distal end development silk ring is the spiral ring object that memorial alloy silk screen end is arranged in, surface tool
There is TPU coating.
Further, develop silk ring length 5-10mm, diameter 0.01-0.03mm for the distal end.
Further, the distal end development silk ring is that platinumiridio silk is entwined.
Further, described to stop the TPU coating that coating is the distal end coated in memorial alloy silk screen.
Further, the thrombus withdrawing device is neural blood vessel thrombus withdrawing device.Preferably, the memory alloy wire
Net overall length 40mm；First, which stops film, develops silk ring distance L1 with proximal end for 10mm；Second, which stops film beginning and first, stops film
The distance L2 at beginning is 12mm；Stop coating with second stop film beginning distance L3 be 12mm, with distal end develop silk ring away from
It is 6mm from L4；The beginning and curved bottom distance L5 of first obstruction film and the second obstruction film are 8mm.
The utility model has the advantage that
The thrombus withdrawing device of the utility model is successively arranged the first obstruction film, the second obstruction in memorial alloy silk screen
Film is equipped in the distal portions of memorial alloy silk screen and stops coating, by the way that triple obstructions are arranged, so that using the utility model
Thrombus withdrawing device removal of thromboses when, no thrombus residual, when device is withdrawn without thrombus breaks loose.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the thrombus withdrawing device of embodiment 1.
Fig. 2 is the expanded schematic diagram of the thrombus withdrawing device of embodiment 1.
Fig. 3 is the structural schematic diagram of proximal end development silk ring.
Fig. 4 is the network schematic diagram of memorial alloy silk screen.
Fig. 5 is the structural schematic diagram for stopping film.
Fig. 6 is the structural schematic diagram of distal end development silk ring.
Schematic diagram when Fig. 7 is the thrombus withdrawing device application of embodiment 1.
Specific embodiment
Embodiment 1
As illustrated in fig. 1 and 2, be embodiment 1 thrombus withdrawing device structural schematic diagram.The thrombus withdrawing device, including
Push seal wire 1, proximal end development silk ring 2, memorial alloy silk screen 3 and the distal end development silk ring 6 set gradually, in memorial alloy silk screen
It is successively arranged the first obstruction film 4, second in 3 and stops film 5, is equipped in the distal portions of memorial alloy silk screen 3 and stops coating 7.
The material for pushing seal wire 1 is superlastic austenite Ultimum Ti, diameter 0.35-0.5mm.Push seal wire 1 and note
Recall and is welded to connect between alloy silk screen 3.
As shown in figure 3, proximal end development silk ring 2 is the spiral shell being arranged at push seal wire 1 and 3 welded connecting of memorial alloy silk screen
Ring is revolved, length 1.5-2mm, diameter 0.01-0.03mm are closely wound by platinumiridio silk, and surface has thermoplasticity
Polyurethane elastomer (TPU) coating.Surface coating TPU can prevent alloy wire to disconnect, while it is curved so that alloy wire is suitable for spiral
Song, the proximal location for thrombus withdrawing device of clearly developing under X-ray.
As shown in figure 4, the closed loop configuration that memorial alloy silk screen 3 is made of the grid of multiple helical arrangements, diameter 3-
The gradient α of 6mm, wall thickness 0.05mm, grid intersection point are 3 ° -5 °, and radian concave point and the distance between the salient point L of adjacent mesh are
3mm.Grid intersection point, which avoids the peak hour to be arranged with, to be conducive to reduce screen loading diameter, to enter the narrower position of lesion.Such as arrangement of avoiding the peak hour
Only one intersection point on each straight line circumference, such as 8 0.01mm silks of diameter, 1 crosspoint, diameter amounts to 0.09mm.But if not
It avoids the peak hour arrangement, 8 0.01mm silks of diameter, 4 crosspoints, diameter amounts to 0.12mm.The memorial alloy silk screen 3 is by nickel-titanium memory
Alloy pipe is made through laser engraving, 450-500 DEG C of high-temperature vacuum sizing, pickling polishing；Or by several diameter 0.02mm's
Circle silk is formed through intersection point welding (solder joint thickness 0.04mm-0.06mm) helical arrangement 3-8 row.
As shown in figure 5, the first obstruction film 4 is the TPU membrane with curvature, thickness 0.01mm, diameter 2-6mm are by TPU
Coated in film made of demoulding later on mold.Preferably, the first obstruction film 4 is made of major diameter front end and minor diameter bottom
TPU membrane, diameter 3-6mm, the high 4-6mm of major diameter front end, diameter 2-3mm, the high 2-4mm of minor diameter bottom.Major diameter front end
Fitting silk screen arch salient point maximum struts diameter, collects thrombus；Streamline is formed on minor diameter bottom, alleviates the impact of inverse blood flow.
It is adhesively fixed between first obstruction film 4 and memorial alloy silk screen 3 using TPU solution.
Likewise, the second obstruction film 5 is the TPU membrane with curvature, thickness 0.01mm, diameter 2-6mm are to apply TPU
Film made of being demoulded after overlaying on mold.Preferably, the second obstruction film 5 is made of major diameter front end and minor diameter bottom
TPU membrane, diameter 3-6mm, the high 4-6mm of major diameter front end, diameter 2-3mm, the high 2-4mm of minor diameter bottom.Major diameter front end
Fitting silk screen arch salient point maximum struts diameter, collects thrombus；Streamline is formed on minor diameter bottom, alleviates the impact of inverse blood flow.
It is adhesively fixed between second obstruction film 5 and memorial alloy silk screen 3 using TPU solution.
As shown in fig. 6, the spiral ring object of 3 end of memorial alloy silk screen, length 5- is arranged in distal end development silk ring 6
10mm, diameter 0.01-0.03mm are closely wound by platinumiridio silk, and surface has TPU coating.Surface coating TPU can prevent
Only alloy wire disconnects, while also alloy wire being made to be suitable for helical buckling, keeps thrombus withdrawing device tip flexible, can pass through blood
Pipe choking position, the distal end in-position for thrombus withdrawing device of clearly developing under X-ray.
The TPU coating that coating 7 is the distal end coated in memorial alloy silk screen 3 is stopped, is the grid in memorial alloy silk screen 3
Between the toughness film layer that is formed.
It discharges, remembers after the thrombus withdrawing device of embodiment 1 is transported to neurovascular closed position by microtubular
Alloy silk screen 3 is discharged by the middle part of thrombus, is restored to memory shaping size and thrombus is placed in memorial alloy silk screen 3, the first resistance
It blocks film 4 and second and stops film 5 for thrombus segmentation (as shown in Figure 7), stopping coating 7 and two obstruction film cooperations can prevent thrombus from taking
Thrombus breaks loose of the device when withdrawing out, while can take in thrombus residue when withdrawing, obstructions triple in this way are to ensure thrombus
It is removed.The thrombus withdrawing device of embodiment 1 is particularly suitable for the acute thrombus within morbidity 9 hours.
In this embodiment, 3 overall length 40mm of memorial alloy silk screen.First stops film 4 and proximal end development 2 distance L1 of silk ring
For 10mm.Second, which stops 5 beginning of film and first, stops 4 beginning distance L2 of film as 12mm.It stops coating 7 and second and stops film 5
The distance L3 at beginning is 12mm, and development 6 distance L4 of silk ring is 6mm with distal end.First, which stops film 4 and second, stops the beginning of film 5
End is 8mm with curved bottom distance L5.Thrombus length can disposably be taken out less than 30mm's, and the thrombus greater than length 30mm can
It takes out in two times.
Embodiment 2
The thrombus withdrawing device of the present embodiment is similar to Example 1, the difference is that: 3 overall length of memorial alloy silk screen
60mm.First obstruction film 4 and proximal end development 2 distance L1 of silk ring are 15mm.Second, which stops 5 beginning of film and first, stops the beginning of film 4
The distance L2 at end is 15mm.Stop coating 7 with second stop 5 beginning distance L3 of film be 15mm, with distal end develop silk ring 6 away from
It is 15mm from L4.The thrombus greater than length 30mm can once be taken out in this way.
Tool of the series of detailed descriptions listed above only for the feasible embodiment of the utility model
Body explanation, not to limit the protection scope of the utility model, those skilled in the art can be designed that a lot of other for they
Modification and implementation, these modifications and implementations will fall within scope and spirit disclosed in the present application.More
Say to body, disclose in the application, drawings and claims in the range of, can building block to theme combination layout and/or
Layout carries out a variety of variations and modifications.In addition to variations and improvements to the component parts and or layout, for this field skill
For art personnel, other purposes also be will be apparent.
Claims (10)
1. a kind of thrombus withdrawing device, which is characterized in that push seal wire, proximal end development silk ring, memory including setting gradually close
Spun gold net and distal end development silk ring are successively arranged the first obstruction film, the second obstruction film, in memorial alloy in memorial alloy silk screen
The distal portions of silk screen, which are equipped with, stops coating.
2. a kind of thrombus withdrawing device according to claim 1, which is characterized in that the memorial alloy silk screen is by multiple
The closed loop configuration of the grid composition of helical arrangement, grid intersection point are avoided the peak hour arrangement.
3. a kind of thrombus withdrawing device according to claim 1, which is characterized in that the first obstruction film is that have bending
The film of degree；The second obstruction film is the film with curvature.
4. a kind of thrombus withdrawing device according to claim 3, which is characterized in that the first obstruction film is by major diameter
The film of front end and minor diameter bottom composition；The film that the second obstruction film is made of major diameter front end and minor diameter bottom.
5. a kind of thrombus withdrawing device according to claim 1 or 3, which is characterized in that described first stops film as TPU
Film；Described second stops film as TPU membrane；The coating that stops is the TPU coating coated in memorial alloy silk screen distal end.
6. a kind of thrombus withdrawing device according to claim 4, which is characterized in that the memorial alloy silk screen diameter 3-
6mm；Described first stops diameter 3-6mm, the high 4-6mm of the major diameter front end of film, diameter 2-3mm, the high 2- of minor diameter bottom
4mm；Described second stops diameter 3-6mm, the high 4-6mm of the major diameter front end of film, diameter 2-3mm, the high 2- of minor diameter bottom
4mm。
7. a kind of thrombus withdrawing device according to claim 1, which is characterized in that the proximal end development silk ring is that setting exists
The spiral ring object of seal wire and memorial alloy silk screen junction is pushed, surface has TPU coating；The distal end development silk ring is to set
The spiral ring object in memorial alloy silk screen end is set, surface has TPU coating.
8. a kind of thrombus withdrawing device according to claim 1, which is characterized in that the push seal wire diameter 0.35-
0.5mm；Develop silk ring length 1.5-2mm, diameter 0.01-0.03mm for the proximal end；The memorial alloy silk screen wall thickness 0.05mm,
The gradient α of grid intersection point is 3 ° -5 °, and the distance between radian concave point and salient point of adjacent mesh are 3mm；Described first stops film
Thickness 0.01mm；Described second stops film thickness 0.01mm；Develop silk ring length 5-10mm, diameter 0.01- for the distal end
0.03mm。
9. a kind of thrombus withdrawing device according to claim 1, which is characterized in that the material of the push seal wire is superlastic
Austenite Ultimum Ti；The proximal end development silk ring is that platinumiridio silk is entwined；The material of the memorial alloy silk screen
Matter is Ultimum Ti；The distal end development silk ring is that platinumiridio silk is entwined.
10. a kind of thrombus withdrawing device according to claim 1, which is characterized in that the thrombus withdrawing device is nerve
Vascular thrombosis withdrawing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721919680.2U CN208838087U (en) | 2017-12-29 | 2017-12-29 | A kind of thrombus withdrawing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721919680.2U CN208838087U (en) | 2017-12-29 | 2017-12-29 | A kind of thrombus withdrawing device |
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| Publication Number | Publication Date |
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| CN208838087U true CN208838087U (en) | 2019-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721919680.2U Active CN208838087U (en) | 2017-12-29 | 2017-12-29 | A kind of thrombus withdrawing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107928747A (en) * | 2017-12-29 | 2018-04-20 | 科睿驰（深圳）医疗科技发展有限公司 | A kind of thrombus withdrawing device |
-
2017
- 2017-12-29 CN CN201721919680.2U patent/CN208838087U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107928747A (en) * | 2017-12-29 | 2018-04-20 | 科睿驰（深圳）医疗科技发展有限公司 | A kind of thrombus withdrawing device |
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