CN207870917U - A kind of degradable spring ring of intravascular intervention medical use - Google Patents
A kind of degradable spring ring of intravascular intervention medical use Download PDFInfo
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- CN207870917U CN207870917U CN201720368473.6U CN201720368473U CN207870917U CN 207870917 U CN207870917 U CN 207870917U CN 201720368473 U CN201720368473 U CN 201720368473U CN 207870917 U CN207870917 U CN 207870917U
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Abstract
The utility model discloses a kind of degradable spring rings of intravascular intervention medical use, the spring ring is packed into a tubulose loader, spring ring is to turn to level-one helical spring on the straight line plug of another same degradable material by a degradable material wire body, and the level-one helical spring is unloaded together with straight line plug, it unloads rear both ends and terminal closing fusion level-one helical spring and straight line plug is sealed by spring port, it is spherical to form semicircle for both ends after fusion, component after fusion turns to deuterostrophies spring on PTFE plugs, PTFE plugs and deuterostrophies spring are shaped through oven, sizing after annealing, deuterostrophies spring is taken out after annealing from PTFE plugs, the deuterostrophies spring is the spring ring for clinical vascular intervenien therapy.There is the utility model spring ring good biocompatibility, the blood vessel of quick-make embolism, the blood vessel that is closed can again lead to because of the degradation of the spring ring, which can also further carry medicine and have the function that auxiliary disposition institute occluded blood vessel.
Description
Technical field
The utility model is related to field of medical technology, specifically a kind of degradable spring of intravascular intervention medical use
Circle.
Background technology
Minimally-invasive vascular intervenien therapy technology is gradually promoted at home in recent years as emerging Advances in Medicine,
Its process is under the guiding of medical imaging device, and interventional medical device is sent to by super-selective through naturally occurring blood vessel access
The many vitals of human body and position, such as：Heart, liver, brain, kidney, digestive system and reproductive system, to be diagnosed and be controlled
The important technology and method for the treatment of have the advantages that without moving knife operation, wound is small, medical expense relative moderate.In intervention operation,
The spring ring that can be imported through conduit or microtubular have push it is convenient, can quickly occlude target vessel, compared with particulate embolization physical security
Without occur accidentally embolism the features such as and be widely used.
However there is following disadvantages for the metal spring circle of wide clinical application at present：1, due to metal material cannot degrade
It is permanent to lead to vascular occlusion, in the case where some only need transient blocking blood vessel, causes blood vessel permanent occlusion.2,
Metal spring loop material can not merge with surrounding vascular tissue and form the suspension in so-called blood pool and move object for a long time, can not
Occlude the aneurysm of disposition.3, for metal elastic spring coil because its quality is heavier, dissociating situation present in the tissue for failing fusion can
Spring ring migration when position being caused to change, and there is the harm to peripheral vascular tissue, as aneurysm ruptures again.
As can overcoming disadvantage mentioned above using new material and new process, the further progress for promoting intervention apparatus improves
The safety of spring ring application, pushes embolism spring ring in clinical application.
When clinical medicine applies intravascular Coil embolization, it is generally divided into two class situations：1, permanent embolism -- as used
Coil embolization is closed intracranial aneurysm chamber；Arteriovenous fistula road；Vascular malformation；It is expected that the tumour supply being disposably and permanently closed
Blood vessel etc..2, transience embolism -- such as the emergency flight control of postpartum uterine hemorrhage, acute gastrointestinal bleeding；Damaged zone or field of operation
Feeding artery blood supply in short-term control etc., after emergency is eliminated, it is expected that vascular patency can be replied.The demand of two kinds of situations and place
The difference set, it is believed that be the difference in the requirement for act on the time limit for embolism.
Medical supplies city field energy offer at present and clinical applied spring ring cannot be satisfied clinically in bolt
The different requirements on the time limit are filled in, especially cannot achieve and transience blood vessel blood supply control is realized using spring ring.Such situation
It is caused by the limitation in the material of the spring ring of current Clinical practice, i.e., clinical intervention worker can not possibly use
Existing metal elastic spring coil reaches the requirement of this of short duration control vascular patency, this is because the spring ring of metal material can only
Permanent lumen of vessels is caused to occlude.
Clinically a kind of alternative metals spring ring realizes that the method for of short duration embolism and material are micro- using gelatin or alginic acid
Ball or fragment.But when this microballoon or fragment embolism point are not intended to Coil embolization, embolism is generated in spring from conduit launched portion
The proximal end of position, and occur from the distal end of blood vessel；There is the initiations of backflowing of microballoon in injection process or fragment to face for microballoon and fragment
Nearby bleeding pipe misses the danger of embolism.
Utility model content
For deficiency in the prior art, the technical problem to be solved by the present invention is to provide a kind of intravascular Jie
Enter the degradable spring ring of medical use.
In order to solve the above technical problems, the utility model is realized by following scheme：A kind of intravascular intervention medical use
Degradable spring ring, the spring ring are packed into a tubulose loader, and the spring ring is by a degradable material wire body another
Level-one helical spring is turned on the straight line plug of the same degradable material of root, and by the level-one helical spring together with straight line plug
It unloads, unloads rear both ends and terminal closing fusion level-one helical spring and straight line plug, both ends after fusion are sealed by spring port
It is spherical to form semicircle, the component after fusion turns to deuterostrophies spring, the PTFE plugs and two level spiral shell on PTFE plugs
Rotation spring is shaped through oven, and after annealing of shaping takes out deuterostrophies spring, the deuterostrophies spring from PTFE plugs after annealing
For the spring ring for clinical vascular intervenien therapy.
Further, the straight line plug is thicker degradable suture, the level-one spiral shell formed on the straight line plug
Revolve the wire body diameter that the external diameter of spring wire is less than straight line plug.
Further, the wire body outer diameter of the straight line plug is 0.1-05mm；
The wire body outer diameter of the level-one helical spring is 0.03-0.3mm.
Further, the straight line plug, level-one helical spring are medical degradable suture.
Further, the degradable suture includes PLLA sutures, POD sutures, PMTC sutures, protein line.
Further, the outer diameter of the PTFE plugs is 1-5mm.
Compared with the existing technology, the utility model has the beneficial effects that：The a kind of of the utility model utilizes degradation material
The spring ring that of short duration vascular embolization is imported through conduit is made, over time, due to the degradation of spring loop material, vascular patency
Property can be restored.Its embolic processes approximately as：Conduit is imported into the target for needing to carry out embolism by seal wire first
Vascular site imports spring ring from pipe joint by spring ring inducting device at this time.Push seal wire is reused by the spring ring
It is released from conduit, the spring ring of release will be close to blood vessel and realize vascular occlusion effect.After the completion of push, the conduit can be passed through
Injection developer is confirmed.
The spring ring has several features：
1, can be close at distal end of catheter, i.e. spring ring is engraved at this from after being pushed out distal end of catheter and stops and realize
Quick occluded blood vessel, rather than therapeutic embolization finally rests on device from after being pushed out conduit as granular embolization material
The fine vascular front end of official.
2, since embolism occurs after being pushed out conduit immediately immediately, be not in granular substance embolism be often easily occur
Occur backflowing due to injection push caused by other positions mistake embolism.
3, it can gradually degrade after the completion of embolism, the difference of selection is made and duration difference of degrading according to spring ring, but
It can realize that the vascular patency after degradation restores.
From material, the utility model uses the good aliphatic polyester series degradable material of biocompatibility, such
Material plasticity is strong, there is certain rigidity and thermoplasticity.It is suitable for making and forms the embolism spring ring with 3D appearances.
Structurally, continuous coiling can form the uniform level-one spring ring of appearance on homogeneity inner core, then by inner core
Coiling forms 2 grades of spring rings on PTFE plugs, and shapes at appropriate temperatures, and the disposition of level-one spring ring end-capped makes
At the complete spring ring of 3D forms.When having demand, degradable cilium is sandwiched between level-one spring turn pitch, becomes band hair spring
Circle；Developing materials are mixed on material to be conducive to observe when operation；It can be made as carrying medicine spring ring with dosing.
Description of the drawings
Fig. 1 is that the degradable spring ring of the utility model intravascular intervention medical use is placed in loader schematic diagram；
Fig. 2 is the utility model deuterostrophies spring structure schematic diagram；
Fig. 3 is the utility model level-one helical spring structure schematic diagram.
It is marked in attached drawing：Loader 1, spring ring 2, straight line plug 3.
Specific implementation mode
The preferred embodiment of the utility model is described in detail below in conjunction with the accompanying drawings, so that the advantages of the utility model
It can be easier to be readily appreciated by one skilled in the art with feature, it is apparent clear to be made to the scope of protection of the utility model
Define.
Please refer to attached drawing 1-3, a kind of degradable spring ring of intravascular intervention medical use of the utility model, the spring ring 2
Be packed into a tubulose loader 1, the spring ring 2 be by a degradable material wire body another same degradable material straight line
Level-one helical spring is turned on plug 3, and the level-one helical spring is unloaded together with straight line plug, is unloaded rear both ends and is passed through
Spring port seals terminal closing fusion level-one helical spring and straight line plug 3, and both ends form semicircle spherical shape after fusion, after fusion
Component deuterostrophies spring is turned on PTFE plugs, the PTFE plugs and deuterostrophies spring are shaped through oven, fixed
Type after annealing, takes out deuterostrophies spring from PTFE plugs after annealing, which is for being intervened in clinical vascular
The spring ring for the treatment of.
The straight line plug is thicker degradable suture, the level-one helical spring wire body formed on the straight line plug
Outer diameter is less than the wire body diameter of straight line plug.
The wire body outer diameter of the straight line plug is 0.1-05mm；
The wire body outer diameter of the level-one helical spring is 0.03-0.3mm.
The straight line plug, level-one helical spring are medical degradable suture.
The degradable suture includes PLLA sutures, POD sutures, PMTC sutures, protein line.
The outer diameter of the PTFE plugs is 1-5mm.
A kind of preparation method of the degradable spring ring of intravascular intervention medical use, visit method include the following steps：
Step 1：Both ends plug fixing end end on precision spring curling machine, fix a segment length be 10cm can
Straight line plug of the degradation suture as the degradation spring ring, it is 0.1 to 0.5 millimeter which, which selects external diametrical extent,；
Step 2：Take an other degradable suture of a diameter of 0.03-0.3mm as spring wire, from the straight line
One end coiling of plug forms level-one helical spring until the straight line plug is completely capped；
Step 3：It is integrally removed from precision spring curling machine around the level-one helical spring and straight line plug made, it will
The both ends of level-one helical spring and straight line plug spring port seals terminal closing fusion, forms hemispheric both ends；
Step 4：Take outer diameter be 1-mm PTFE plugs, by step 3 level-one helical spring and straight line plug formed
Component carry out two level winding, and fixation of pressurizeing on PTFE plugs, which is to complete the making of deuterostrophies spring；
Step 5：It will complete the spring ring that two level is wound on PTFE plugs to fix, by spring ring and PTFE cores after fixing
Stick is integrally placed to the sizing oven of precision temperature control；
Step 6：It after spring ring sizing, takes out spring ring and anneals at room temperature with PTFE plugs, released after 8-15 minutes solid
It is fixed, the spring ring on PTFE plugs is detached, the spring ring after separation is the spring ring for clinical vascular intervenien therapy.
The spring ring for clinical vascular intervenien therapy includes development spring ring, the load with drug release function
Medicine degradation spring ring, band hair spring ring；
For requiring spring ring that there is tracer performance requirement, tungsten powder is added in advance for spring ring merging same with spring ring
Outer layer is coated in the hexafluoroisopropanol solution that kind degradation wire material makes, forms development spring ring；
For requiring the making for carrying medicine degradation spring ring of drug release function：Spring ring is placed in added with drug
Spring ring outer layer is coated in the hexafluoroisopropanol solution that degradation wire material of the same race makes；
For requiring to be fabricated to the requirement with hair spring ring, pulls two ends of spring ring and extension spring circle is nearly straight
Shape is placed in degradable material fine fibre between level-one helical spring screw pitch, after the completion of storing, spring ring both ends is slowly relaxed to extensive
Spring ring original state is arrived again, that is, completes the making with hair spring ring.
Embodiment：
1. the loader equipped with degradable spring ring to be connected to the exit of pipe joint tail end, make the one of loader 1
The prepackage process of degradable spring ring is completed on catheter channels mouth in the crown.
2. the seal wire that outer diameter is slightly less than to catheter diameter is stretched into from the other end of loader in loader, seal wire is pushed, it can
See that seal wire front end slowly pushes degradable spring ring, continues to push seal wire until the spring ring is all sent into conduit.
3. exiting seal wire at this time, then remove empty loader, the seal wire is then inserted into conduit from conduit mouth, continues to push
For spring ring until reaching target area, i.e. completion spring goes merging process.
Above description is merely a prefered embodiment of the utility model, is not intended to limit the patent model of the utility model
Enclose, equivalent structure or equivalent flow shift made by using the description of the utility model and the drawings, or directly or
It connects and is used in other relevant technical fields, be equally included in the patent within the scope of the utility model.
Claims (3)
1. a kind of degradable spring ring of intravascular intervention medical use, which is packed into a tubulose loader (1), special
Sign is：The spring ring (2) is by the coiling on the straight line plug of another same degradable material of a degradable material wire body
At level-one helical spring, both ends seal terminal closing fusion level-one helical spring and straight line plug, fusion by spring port
Both ends form semicircle spherical shape afterwards, and the component after fusion turns to deuterostrophies spring on PTFE plugs.
2. a kind of degradable spring ring of intravascular intervention medical use according to claim 1, it is characterised in that：The level-one
The wire body outer diameter of helical spring is 0.03-0.3mm.
3. a kind of degradable spring ring of intravascular intervention medical use according to claim 1, it is characterised in that：The level-one
Helical spring is medical degradable suture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720368473.6U CN207870917U (en) | 2017-04-10 | 2017-04-10 | A kind of degradable spring ring of intravascular intervention medical use |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720368473.6U CN207870917U (en) | 2017-04-10 | 2017-04-10 | A kind of degradable spring ring of intravascular intervention medical use |
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| CN207870917U true CN207870917U (en) | 2018-09-18 |
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| CN201720368473.6U Active CN207870917U (en) | 2017-04-10 | 2017-04-10 | A kind of degradable spring ring of intravascular intervention medical use |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109925018A (en) * | 2019-01-30 | 2019-06-25 | 张韬 | Embolism series connection blocks segment and using its aneurysm plugging system in tumor |
-
2017
- 2017-04-10 CN CN201720368473.6U patent/CN207870917U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109925018A (en) * | 2019-01-30 | 2019-06-25 | 张韬 | Embolism series connection blocks segment and using its aneurysm plugging system in tumor |
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