CN206491840U - A kind of spring shape takes pin device and induction system - Google Patents
A kind of spring shape takes pin device and induction system Download PDFInfo
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- CN206491840U CN206491840U CN201621245069.1U CN201621245069U CN206491840U CN 206491840 U CN206491840 U CN 206491840U CN 201621245069 U CN201621245069 U CN 201621245069U CN 206491840 U CN206491840 U CN 206491840U
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- pin device
- double
- support bar
- spring shape
- takes
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Abstract
The utility model is related to a kind of spring shape and takes pin device and induction system.Described device is provided with support bar, is distally fixed on support bar, near-end free double-spiral structure twine and the free collar；Support bar distal end is flexible end；The free collar is socketed in metallic rod；Double-spiral structure twine is extracted under silk, natural tension state including two, and two are extracted silk in the close adjacent double-helix spring structure of ring ring.The induction system includes microtubular and described spring shape takes pin device.It is strong that the utility model arrests power, and it is tougher to be more suitable for arresting quality, with the close thrombus of vascular wall adhesion, and the thrombus positioned at dead angles such as vascular bifurcations；And pin device is taken relative to support rack type, there is higher security when reducing the friction between device and tube wall in operation, it is to avoid angiectopia and inner film injury, therefore being operated in the blood vessel of distal end；In addition, also having the characteristics of integral material is less, transporting is strong, application method is simple.
Description
【Technical field】
The utility model is related to technical field of medical instruments, specifically, is related to a kind of spring shape and takes pin device and conveying
System.
【Background technology】
The blood vessel for opening occlusion as early as possible is the therapeutic purpose of acute ischemic stroke extreme early, and intravascular Interventional Treatment is
Lead to means again for acute vessel occlusion is maximally effective.Support rack type from 2012 using Solitaire, Trevo as representative takes
Pin device is in internal carotid (diameter 4-5mm), middle cerebral artery M 1 segment (diameter 2.5-3.5mm), a small amount of M2 sections (2mm) and brain
Relatively satisfactory effect is obtained in the case of A1 sections of (2mm) embolisms of prerolandic artery Rolando, Reperfu- sion rate is up to 70%~86%, and therefore obtains
Extensive use.Solitaire FR take pin device to be a kind of recyclable nick-eltitanium alloy stent of reel wire shape self-inflated, at present by FDA batches
Accurate has two kinds of models of 4mm*20mm, 6mm*30mm, it is adaptable to more than diameter 2mm blood vessel.Under X-ray examination, with device type
Number supporting microtubular passes through the occluded segment of blood vessel under micro-wire guiding, by microtubular that the support for being compressed to wire is defeated
Thrombi is delivered to, withdraws from during microtubular after-poppet expands naturally in the blood vessels and thrombus is pressed into vascular wall, while net
The embedded thrombus of silk, the metallic rod of mount proximal end of pulling back connection reclaims support and taken out of while will tangle in the thrombus on support twine.
However, inventor Long-term clinical work in meticulous inspection and summary, it is believed that it is above-mentioned take pin device to still have with
Lower defect：1. take pin device using self-expanding flexible support type, thrombus is usually located on the outside of support twine, in support
Under radial support power, friction when withdrawing support between support and blood vessel easily causes angiectopia, tube wall to stimulate, inner membrance
It is damaged；As described in product description, solitaire FR take pin device suitable for diameter >=2mm blood vessel, for embolism blood
When managing, position relatively thin compared with thin, tube wall farther out, its defect is more obvious, or even occurs the Complicated with Severe of perforating branches vascular laceration bleeding
Disease；2. it is difficult effective take out for the harder tougher thrombus of quality；3. hung under the impact of near-end blood flow on the outside of support twine
Thrombus be easily separated from and cause distal embolization；4. because support rack type takes pin device to require higher to the adherent degree of support, therefore
Thrombus for being stuck in furcation, traditional support rack type takes pin device due to the limitation of itself radian and far and near end blood vessel diameter
Difference, generally can not with blood vessel perfection fit, the presence in gap to take bolt effect to substantially reduce, it is necessary to operate repeatedly even
Operation failure.
Earliest (Merci is put for the coil shape dress that to take pin device be a kind of one-way spiral that encephalic takes that bolt lists
Retriever (Concentric Medical, Mountain View, CA)), random contrast clinical trial (SWIFT) proves it
Thrombus arrests ability and security is weaker than support rack type and takes pin device.The main distinction of the design therewith is：1st, distal end is fixed, near
The design of end dissociative makes its spiral shape twine structure during being pulled gradually tighten up and non-stretching, so as to add to blood
Bolt arrests ability；2nd, the flexible end of distal end reduces the risk to injured blood vessel in course of conveying；3rd, double-spiral structure net
Silk is relatively fixed end to end, is interacted during nature is recovered, is added radial expansion force, be conducive to being embedded in thrombus from
And increase and arrest ability.
In summary, needing one kind badly, to arrest power strong, it is adaptable to relatively fine blood vessel, can reduce device and intervascular friction from
And injury of blood vessel and displacement are avoided, and pin device is taken to embolus is equally valid at the dead angle such as embolus, furcation in distal vessels,
But had not been reported at present on such device.
【The content of the invention】
The purpose of this utility model is to provide a kind of spring shape and takes pin device.
Another purpose of the present utility model is to provide a kind of spiral shape and takes bolt induction system.
To realize above-mentioned first purpose, the utility model is adopted the technical scheme that：
A kind of spring shape takes pin device, and described spring shape takes pin device to be provided with support bar, is distally fixed on support bar, near
The double-spiral structure twine and the free collar of end dissociative；Support bar distal end is flexible end；The free collar is socketed on metal
On bar；Double-spiral structure twine is extracted under silk, natural tension state including two, and two are extracted silk in close adjacent pair of ring ring
Helical spring structure.
Described silk of extracting is made up of elastic memory wire.
When described double-spiral structure twine is in most compressed state by axial compressive force, double-spiral structure twine
Axial length is 3-10mm, and radical length is 1.5-3.0mm.
Described support bar is metallic rod.
To realize above-mentioned second purpose, the utility model is adopted the technical scheme that：
A kind of spiral shape takes bolt induction system, and provided with microtubular and as above any described spring shape takes pin device, non-work
Making spring shape described under state takes pin device loaded in microtubular, and described double-spiral structure twine is bound as radical length
The wire equal with microtubular internal diameter.
The utility model advantage is：
1st, the fixation of silk distal end is extracted for two, near-end is connected to the free collar, when pulling back support bar, and double-spiral structure twine will
Further compression, adds the chucking power to thrombus, and joint microtubular head end can be securely fixed to extracting the limitation of a near-end
Extract the thrombus that silk is clamped, therefore to quality is tougher, to arrest power with the close thrombus of vascular wall adhesion strong, and this kind of thrombus is used
Support rack type takes pin device to be often not easy success；
2nd, because device radical length is less than or equal to vessel diameter, therefore the present apparatus is smaller to the active force of vascular wall,
Pin device is taken to reduce the friction between device and tube wall relative to support rack type in operation, it is to avoid angiectopia and inner membrance
Damage, therefore have higher security when being operated in the blood vessel of distal end；
3rd, extract that support bar is fixed in silk distal end and near-end is free for two, therefore reflexive support bar can be completed to extracting silk
The regulation of radical length, helps accurately to control radial support power；
4th, two closing in designs for extracting silk distal end also act as closure and fish for the effect of thrombus；
5th, the flexible end design of support bar distal end reduces the risk of vascular damaged；
6th, it is overall that there is the characteristics of material is less, transporting is strong, application method is simple.
【Brief description of the drawings】
Accompanying drawing 1 is that spring shape of the present utility model takes the natural tension state structural representation of pin device.
Accompanying drawing 2 is that spiral shape of the present utility model takes bolt induction system off working state structural representation.
【Embodiment】
With reference to embodiment and the utility model is further described referring to the drawings.
The reference and part being related in accompanying drawing are as follows：
1. the flexible end of support bar 11.
2. double-spiral structure twine 21. extracts silk
3. the free microtubular of the collar 4.
Embodiment 1
Fig. 1 is referred to, Fig. 1 is that spring shape of the present utility model takes the natural tension state structural representation of pin device.It is described
Spring shape take pin device be provided with support bar 1, double-spiral structure twine 2 and the free collar 3.The described distal end of support bar 1
For flexible end 11.The described free collar 3 is socketed in metallic rod 1.Branch is fixed in the described distal end of double-spiral structure twine 2
Strut 1 is on the section of distal end, and near-end is both secured on the free collar 3.Double-spiral structure twine 2 is extracted including two
Under silk 21, natural tension state, two are extracted silk 21 in the close adjacent double-helix spring structure of ring ring.
Spring shape of the present utility model takes pin device that plurality of specifications can be set, wherein, when double-spiral structure twine 2 is by axle
When being in most compressed state to pressure, its axial length is 3-6mm, and radical length is 1.5-3.0mm.
Embodiment 2
Fig. 2 is referred to, Fig. 2 is that spiral shape of the present utility model takes bolt induction system off working state structural representation.Institute
The spiral shape stated takes bolt induction system to take pin device 100 and microtubular 200 provided with spring shape.Under off working state, described bullet
Spring shape takes pin device 100 loaded in microtubular 200, and described double-spiral structure twine 2 is bound as radical length and microtubular
The equal wire of 200 internal diameters.
For above example, it is necessary to illustrate, described support bar 1 is metallic rod, and it provides double-spiral structure net
Silk 2 fixes site and control action, inserting and taking out for double-spiral structure twine 2.Described flexible end 11 can be reduced
The risk of injured blood vessel wall during device release.Described silk 21 of extracting is made up of elastic memory wire, such as Nitinol,
It is by preformed spirality；Extract silk 21 for two and constitute double-spiral structure twine 2, be distally attached to the flexible end of support bar 1
Near 11, near-end is attached to the free collar 3, in a first aspect, when device is released in thrombus, pulling support bar 1, double helix knot
Network forming silk 2 is by further cripetura, and distance reduces between helical ring, so that " clamping " thrombus；Second aspect, extracts silk from microtubular
, can also be by its radical length of the accurate adjustment of reflexive support bar 1, to reach most as not being thus capable of sufficiently recovering to nature after middle release
It is good to arrest state；The third aspect, double-spiral structure twine 2 takes pin device relative to support rack type, and dress is reduced in operation
There is higher peace when putting the friction between tube wall, it is to avoid angiectopia and inner film injury, therefore being operated in the blood vessel of distal end
Quan Xing.Described microtubular 4 takes pin device 100 to focus for conveying spring shape, while can be also used in working condition
The axial length of silk 21 is extracted in control.It is inventor in abundant clinical practice work that above spring shape, which takes the specification of pin device,
Summary is drawn, to ensure the security used, it is proposed that the diameter of used device model double-spiral structure twine 2 should be less than blood
Bore.
Spiral shape of the present utility model takes the application method of bolt induction system to be：In art, under X-ray examination, by this practicality
New spiral shape takes bolt induction system (i.e. internal that the microtubular 200 that spring shape takes pin device 100 is housed) to insert affected area, i.e.,
Take pin device 100 to be delivered to thrombi the spring shape for being compressed to wire by microtubular 200, outwards exit microtubular 200
From coil to coil release double-spiral structure twine 2, double-spiral structure twine 2 recovers in the blood vessels to natural tension state and from coil to coil is embedded in blood
Tangled in bolt with thrombus and clamp thrombus, the number of turns that patient can discharge according to thrombus length autonomous control.Pull back support bar 1, it is double
The distal affixation points stress of helical structure twine 2, spiral winding is gradually tightened up, and the notable cripetura of silk 21 is extracted if seeing under x-ray, can be slightly
Microtubular 200 is pushed until slightly feeling resistance forward, now reclaims whole system, thrombus is taken out of.
It is tougher that spiral shape of the present utility model takes bolt induction system to be more suitable for arresting quality, close with vascular wall adhesion
Thrombus, and the thrombus positioned at dead angles such as vascular bifurcations, and pin device is taken relative to support rack type, reduce in operation
Friction between device and tube wall, it is to avoid angiectopia and inner film injury, therefore have higher when being operated in the blood vessel of distal end
Security.In addition, also having the characteristics of integral material is less, transporting is strong, application method is simple.
Described above is only preferred embodiment of the present utility model, it is noted that for the common skill of the art
Art personnel, on the premise of the utility model principle is not departed from, can also make some improvement and supplement, and these improve and supplemented
Also it should be regarded as protection domain of the present utility model.
Claims (5)
1. a kind of spring shape takes pin device, it is characterised in that described spring shape takes pin device to be provided with support bar, is distally fixed on
Support bar, near-end free double-spiral structure twine and the free collar；Support bar distal end is flexible end；Free set ring set
It is connected in metallic rod；Double-spiral structure twine is extracted under silk, natural tension state including two, and it is in that ring ring is close that two, which are extracted silk,
Adjacent double-helix spring structure.
2. spring shape according to claim 1 takes pin device, it is characterised in that described extracts silk for elastic memory metal
Silk is made.
3. spring shape according to claim 1 takes pin device, it is characterised in that when described double-spiral structure twine by
When axial compressive force is in most compressed state, the axial length of double-spiral structure twine is 3-10mm, and radical length is 1.5-
3.0mm。
4. spring shape according to claim 1 takes pin device, it is characterised in that described support bar is metallic rod.
5. a kind of spiral shape takes bolt induction system, it is characterised in that provided with any described spring of microtubular and claim 1-4
Shape takes spring shape described under pin device, off working state to take pin device to be loaded in microtubular, described double-spiral structure twine
It is bound as the radical length wire equal with microtubular internal diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621245069.1U CN206491840U (en) | 2016-11-14 | 2016-11-14 | A kind of spring shape takes pin device and induction system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621245069.1U CN206491840U (en) | 2016-11-14 | 2016-11-14 | A kind of spring shape takes pin device and induction system |
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| Publication Number | Publication Date |
|---|---|
| CN206491840U true CN206491840U (en) | 2017-09-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621245069.1U Expired - Fee Related CN206491840U (en) | 2016-11-14 | 2016-11-14 | A kind of spring shape takes pin device and induction system |
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| CN (1) | CN206491840U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109464175A (en) * | 2018-12-21 | 2019-03-15 | 北京久事神康医疗科技有限公司 | Thrombus withdrawing device and its application method |
-
2016
- 2016-11-14 CN CN201621245069.1U patent/CN206491840U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109464175A (en) * | 2018-12-21 | 2019-03-15 | 北京久事神康医疗科技有限公司 | Thrombus withdrawing device and its application method |
| CN109464175B (en) * | 2018-12-21 | 2023-10-20 | 北京久事神康医疗科技有限公司 | Thrombus removal device and method of using same |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170915 Termination date: 20181114 |
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| CF01 | Termination of patent right due to non-payment of annual fee |