CN204971706U - A local close support of netting for aneurysm - Google Patents
A local close support of netting for aneurysm Download PDFInfo
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- CN204971706U CN204971706U CN201520702339.6U CN201520702339U CN204971706U CN 204971706 U CN204971706 U CN 204971706U CN 201520702339 U CN201520702339 U CN 201520702339U CN 204971706 U CN204971706 U CN 204971706U
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Abstract
The utility model relates to a local close support of netting for aneurysm, include: support subject, support subject is netted, is divided into close net bracket parts and fei mi wet end branch, support subject is the pipe form, the circumscribed circle diameter of every mesh when bracket parts release is netted to the secret is 200 mu m -1000 mu m, the non - close wet end of support divides the diameter of the mesh circumscribed circle when releasing to be 1mm -3mm. The utility model discloses a support can seal the aneurysm well, reduces the interference to branch's blood vessel blood supply, reduces normal hematal stimulation and influence on every side, reduces vascular endometrial hyperplasia, can simplify the treatment operation, improves the treatment security.
Description
Technical field
The invention belongs to medical instruments field, be specifically related to the local dense net support for the treatment of arteries and veins tumor.
Background technology
Aneurysm is a kind of permanent expansion disease occurred due to ductus arteriosus wall local weak.Cerebral aneurysm belongs to peripheral arterial aneurysm, refers to the tumor sample projection that the expansion of cerebral arteries tube wall limitation produces, the aneurysm tumor wall of projection thinning gradually and final Rupture haemorrhag under the continuous impact of blood flow.Ruptured intracranial aneurysm morbidity urgency, severe symptoms, without obvious tendency, there is very high mortality rate and disability rate.The treatment of a cerebral aneurysm mainly point surgical clamp is closed and is treated with endovascular intervention.But surgical clamp is closed, and wound is large, complication is many, operation and recovery time all very long, not by the welcome of doctor and patient.Along with the progress of the intravascular Interventional Treatment technology of invasive, increasing cerebral aneurysms accepts intravascular Interventional Treatment technology, and endovascular intervention technology also becomes the dominant technology of cerebral aneurysm treatment gradually.
The Endovascular Embolization of cerebral aneurysm, mainly use detachable coil is implanted in aneurysm by microtubular and is carried out thromboembolism, makes form thrombosis in aneurysm cavity and close and reach dissection healing.For giant aneurysm or wide neck aneurysm, simple turn is not easy thromboembolism, or thromboembolism rear spring circle is easily deviate from and caused dystopy thromboembolism to intra-arterial from aneurysm cavity, cause cerebral infarction to wait indefinitely severe complication, this just needs support to assist thromboembolism (as Fig. 1); At this moment, need first to insert a non-close net support, and then microtubular is sent in aneurysm cavity in the large-mesh of support carry out Coil embolization, be finally full of completely after aneurysm cavity until turn and microtubular is withdrawn from, complete embolic processes.Such step operation is more loaded down with trivial details, and in operation, microtubular or turn may people cause art medium-sized artery tumor Rupture haemorrhag to cause the consequences such as severe complication for breaking aneurysm wall; When operation inserted by turn, also may cause thrombosis, cause unnecessary embolic complications; And for small aneurysm, even minimum turn also cannot be filled in aneurysm cavity, thromboembolism more easily causes aneurysm rupture hemorrhage by force.In addition, because cerebral arteries has a lot of branch vessel, overlay film frame is used to carry out treating and easily hide branch vessel and cause cerebral infarction to wait indefinitely severe complication.Although a kind of complete close net support of external use can simplify the operation of Coil embolization, aneurysm of entirely shutting when being used for the treatment of aneurysm, but the whole close net of support is very wide to the coverage of blood vessel, unnecessary branch vessel tube wall hypertrophy, narrow even obturation may be caused.This support and operational approach are both dangerous, also inconvenient above, a kind ofly use simple, easy to operate support to be used for the treatment of cerebral arteries giant aneurysm, small aneurysm, wide neck aneurysm in the urgent need to developing and involve the aneurysm of branch vessel, and reducing support to the impact of normal blood vessels and stimulation.
Utility model content
Technical problem to be solved in the utility model be to provide a kind of structure simple, easy to operate for aneurysmal local dense net support, be specially adapted to the aneurysm for the treatment of brain giant aneurysm, wide neck aneurysm, small aneurysm and involving branch vessel, to simplify the aneurysmal operating performance of endovascular treatment, improve the safety for the treatment of.
The technical scheme that this utility model solves the employing of its technical problem is:
A kind of for aneurysmal local dense net support, comprising: rack body, described rack body is network structure, is divided into close net holder part and Fei Mi mesh portions; Described rack body is circular tube shaped; The circumscribed circle diameter of each mesh during release of described support close mesh portions is 200 μm-1000 μm; The external diameter of a circle of mesh when the non-close mesh portions of described support discharges is 1mm-3mm.
Preferably, the net bar area coverage being in described close net holder part during release conditions is the 20%-80% of the close net holder part gross area.
Preferably, the two ends of close net holder part respectively arrange more than one metal marker thing.
Preferably, the far-end of described rack body arranges more than one metal marker thing.
Preferably, the network structure of described rack body is hollow out cutting or filamentary material braiding.
Preferably, described rack body is eject or the swollen formula of ball.
Preferably, described close net holder part is two or more, arranges connecting portion between adjacent two close net holder part, and mesh circumscribed circle diameter during described connecting portion release is 1mm-3mm.
The rack body of the close net holder part of this utility model is composites of any one or any two compositions of titanium silk, tungsten filament, nitinol alloy wire, tantalum wire, stainless steel silk, billon silk.Or select absorbable material or medical material, and as: Merlon, polyanhydride copolymer, gel or magnesium alloy.
Close net holder part of the present utility model and guiding wire, carry microtubular, conveying lever, guiding catheter with the use of, be and well known to a person skilled in the art prior art.
The close net rack body of part of the present utility model has contractility, under release conditions, profile is netted cylindrical shape, suitable with the cerebral artery vessel inwall at aneurysm place, shrinking under feed status is fixed in microtubular, and aneurysm place is delivered to through guiding catheter under the guiding of guiding wire, release is used for the treatment of aneurysm.
Good effect of the present invention is:
(1) the close net holder part of support can cover aneurysm oral area, significantly reduces the blood flow entered in aneurysm, and the blood flow entered in aneurysm is slowed down, produces eddy current, final thrombosis and the closure of aneurysms of being formed;
(2) the non-close mesh portions of support can reduce the stimulation to the around normal blood vessels at nonaneurysm position, reduces neointimal hyperplasia reaction, and reduces the impact on branch vessel;
(3) inserting of support is carried out at intra-arterial, not at aneurysm transluminal operation, decreases the hemorrhage danger causing severe complication of rupture of aneurysm during operation;
(4) provide and a kind ofly treat small aneurysm and involve the aneurysmal method of branch, small aneurysmal treatment is also a difficult point, turn cannot fill in thromboembolism, overlay film frame can affect branch vessel again, and the close net of part then can be closed aneurysm well and not affect the branch vessel of surrounding;
(5) close net support is also a progress greatly for treatment giant aneurysm, inserting one or two close net support just can shutoff giant aneurysm and without the need to inserting turn, both do not had turn to insert the occupation time process caused, and greatly simplified operating performance yet, reduce medical expense;
(6) the metal marker thing at the two ends of close net holder part is convenient to placement site, location, and the radiopaque metal marker thing of rack far end contributes to location and the release of support.When releasing bracket, allow the radiopaque metal marker thing at support close net two ends be positioned at the both sides of aneurysm oral area, cover aneurysm oral area, fixed support conveying lever, withdraws microtubular gradually, and support just can be released to appropriate location.Now connect power supply, use electrolysis is de-to be freed conveying lever from support and withdraws from conveying lever;
Between (7) two sections of close net holder part, connecting portion is set, and the mesh of connecting portion is greater than close net holder part mesh, improve the retractility of this utility model support, and connecting portion facilitates seal wire to pass, is convenient to retracting spring circle.
Support of the present utility model can close aneurysm well, reduces the interference to branch vessel blood supply, reduces the stimulation on surrounding normal blood vessel and impact, reduces vascellum endometrial hyperplasia, can simplify treatment operation, improve Therapeutic safety.
Accompanying drawing explanation
When Fig. 1 is prior art treatment aneurysm, intravascular stent uses schematic diagram;
Fig. 2 is the structural representation of embodiment 1;
Fig. 3 is the aneurysmal structural representation that branch vessel is involved in embodiment 1 treatment;
Fig. 4 is that embodiment 1 treats small aneurysmal structural representation;
Fig. 5 is the structural representation that embodiment 1 treats giant aneurysm;
Fig. 6 is the another kind of structural representation of embodiment 1;
Fig. 7 is the structural representation of embodiment 2;
Fig. 8 is the aneurysmal structural representation that branch vessel is involved in embodiment 2 treatment;
In accompanying drawing, 1 close net holder part, 2 non-close mesh portions, 3 metal marker things, 4 aneurysms, 5 branch vessel, 6 connecting portions.
Detailed description of the invention
For enabling above-mentioned purpose of the present utility model, feature and advantage become apparent more, below in conjunction with the drawings and specific embodiments in this utility model embodiment, technical scheme in this utility model embodiment is clearly and completely described, obviously, described embodiment is only this utility model part embodiment, instead of whole embodiments.Based on the embodiment in this utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of this utility model protection.
embodiment 1
As Fig. 2, embodiment 1 comprises rack body, and described rack body is network structure, and described rack body is divided into close net holder part 1 and Fei Mi mesh portions 2; The mesh size of close net holder part 1 is 300 μm, and the net bar area coverage being in close net holder part 1 during release conditions is 40% of close net holder part 1 gross area, and the mesh size of non-close net support 2 part is 2mm; Described rack body is circular tube shaped.
The both sides of described rack body near-end close net holder part 1 respectively arrange a radiopaque metal marker thing 3.
Described rack body is eject or the swollen formula of ball.
The far-end of described rack body does not arrange metal marker thing 3.
Stent body of the present invention is that nitinol alloy wire braiding forms.
Top of the present invention intravascular stent and guiding wire, microtubular, conveying lever and guiding catheter with the use of, be and well known to a person skilled in the art prior art.
The rack body of intravascular stent of the present invention has contractility, under release conditions, profile is netted cylindrical shape, suitable with the cerebral artery vessel inwall at aneurysm place, shrink under feed status and be fixed in microtubular, and under the guiding of micro-wire, be delivered to the aneurysm place of aortic bifurcation.
As shown in Figure 3, embodiment 1 is applied to the aneurysm 4 that branch vessel is involved in treatment, described close net holder part 1 can shutoff aneurysm 4 oral area, and the blood making to enter in aneurysm 4 forms eddy current and thrombosis and closure of aneurysms chamber, non-close net support 2 part of far-end does not affect the patency of far-end branch blood vessel 5.
As shown in Figure 4, embodiment 1 is applied to the small aneurysm for the treatment of, described close net holder part 1 can shutoff small aneurysm 4 oral area, and the blood making to enter in small aneurysm forms eddy current and thrombosis and closure of aneurysms chamber, the non-close mesh portions 2 in support two ends can reduce the stimulation to blood vessel, reduces vascellum endometrial hyperplasia.
As shown in Figure 5, embodiment 1 is applied to treatment giant aneurysm, described close net holder part 1 can shutoff giant aneurysm oral area, and the blood making to enter in aneurysm forms eddy current and thrombosis and closure of aneurysms chamber, the non-close mesh portions 2 in support two ends can reduce the stimulation to blood vessel, reduces vascellum endometrial hyperplasia.
As seen in figs, the close net holder part of embodiment 1 is arranged on middle, non-close mesh portions and is arranged on two ends, or close net holder part and Fei Mi mesh portions all arrange one.
embodiment 2
As shown in FIG. 7 and 8, embodiment 2 comprises rack body, and described rack body is network structure, and described rack body is divided into close net holder part 1 and Fei Mi mesh portions 2; The mesh size of close net holder part 1 is 400 μm, and the net bar area coverage being in close net holder part 1 during release conditions is 40% of close net holder part 1 gross area, and the mesh size of non-close mesh portions 2 is 3mm; Described rack body is circular tube shaped.
Described close net holder part 1 arranges two, between connect with connecting portion 6, described connecting portion 6 discharge time mesh diameter be 3mm, during release connecting portion be used for by seal wire, retracting spring circle.
In the middle of rack body, the both sides of close net holder part 1 respectively arrange a radiopaque metal marker thing 3.
Described rack body is eject or the swollen formula of ball.
The far and near two ends of described rack body do not arrange metal marker thing.
Stent body of the present invention is that nitinol alloy wire braiding forms.
Top of the present invention intravascular stent and guiding wire, microtubular, conveying lever and guiding catheter with the use of, be and well known to a person skilled in the art prior art.
The rack body of intravascular stent of the present invention has contractility, under release conditions, profile is netted cylindrical shape, suitable with the cerebral artery vessel inwall at aneurysm place, shrink under feed status and be fixed in microtubular, and under the guiding of micro-wire, be delivered to the aneurysm place of aortic bifurcation.
The close net holder part 1 of described rack body can shutoff aneurysm 4 oral area, and makes the blood entered in aneurysm form eddy current and thrombosis and closure of aneurysms chamber, and the non-close mesh portions of far-end does not affect the patency of far-end branch blood vessel 5.
Claims (6)
1. for an aneurysmal local dense net support, it is characterized in that, comprising: rack body, described rack body is network structure, is divided into close net holder part (1) and non-close mesh portions (2); Described rack body is circular tube shaped; The circumscribed circle diameter of each mesh during described close net holder part (1) release is 200 μm-1000 μm; The external diameter of a circle of mesh when the non-close mesh portions (2) of described support discharges is 1mm-3mm.
2. local dense net support according to claim 1, is characterized in that, the net bar area coverage being in described close net holder part (1) during release conditions is the 20%-80% of close net holder part (1) gross area.
3. local dense net support according to claim 1, is characterized in that, the two ends of described close net holder part (1) respectively arrange more than one metal marker thing (3).
4. local dense net support according to claim 1, is characterized in that, the far-end of described rack body arranges more than one metal marker thing (3).
5. local dense net support according to claim 1, is characterized in that, the network structure of described rack body is hollow out cutting or filamentary material braiding.
6. local dense net support according to claim 1, is characterized in that, described rack body is eject or the swollen formula of ball.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520702339.6U CN204971706U (en) | 2015-09-11 | 2015-09-11 | A local close support of netting for aneurysm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520702339.6U CN204971706U (en) | 2015-09-11 | 2015-09-11 | A local close support of netting for aneurysm |
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| Publication Number | Publication Date |
|---|---|
| CN204971706U true CN204971706U (en) | 2016-01-20 |
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| CN201520702339.6U Active CN204971706U (en) | 2015-09-11 | 2015-09-11 | A local close support of netting for aneurysm |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108245216A (en) * | 2016-12-29 | 2018-07-06 | 香港科技大学深圳研究院 | A kind of aneurysm treatment system |
| CN110893114A (en) * | 2019-12-26 | 2020-03-20 | 上海加奇生物科技苏州有限公司 | Stent for direct treatment of aneurysm without blocking peripheral blood vessel of aneurysm |
| CN111134920A (en) * | 2020-01-22 | 2020-05-12 | 北京弘海微创科技有限公司 | Close net support |
-
2015
- 2015-09-11 CN CN201520702339.6U patent/CN204971706U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108245216A (en) * | 2016-12-29 | 2018-07-06 | 香港科技大学深圳研究院 | A kind of aneurysm treatment system |
| CN110893114A (en) * | 2019-12-26 | 2020-03-20 | 上海加奇生物科技苏州有限公司 | Stent for direct treatment of aneurysm without blocking peripheral blood vessel of aneurysm |
| CN111134920A (en) * | 2020-01-22 | 2020-05-12 | 北京弘海微创科技有限公司 | Close net support |
| CN111134920B (en) * | 2020-01-22 | 2023-08-08 | 北京弘海微创科技有限公司 | Close net support |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |