CN203815661U - Thrombus filter and release system thereof - Google Patents
Thrombus filter and release system thereof Download PDFInfo
- Publication number
- CN203815661U CN203815661U CN201420107841.8U CN201420107841U CN203815661U CN 203815661 U CN203815661 U CN 203815661U CN 201420107841 U CN201420107841 U CN 201420107841U CN 203815661 U CN203815661 U CN 203815661U
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- CN
- China
- Prior art keywords
- thrombus filter
- filter
- delivery system
- pusher
- thrombus
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
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Abstract
The utility model provides a thrombus filter, and the end of the thrombus filter is provided with a guide wire cavity which runs through the end. The utility model also provides a release system of the thrombus filter, and the release system of the thrombus filter has a first state and a second state at least; under the first state, the release system comprises a guide catheter and a pusher, and the end of the pusher is provided with a curved guide wire; under the second state, the release system also comprises the claimed thrombus filter. When the pusher with the curved guide wire is utilized to push the thrombus filter with the guide wire cavity to a release position, in the process of release, a doctor can utilize an external handle of the rotary pusher to transfer force to the curved guide wire on the end of the pusher to finely adjust the position of the filter, and thereby the thrombus filter can be accurately positioned and cannot incline and shift.
Description
technical field
The application relates to thrombus filter and delivery system thereof.
background technology
Pulmonary embolism (is called for short pulmonary infarction pulmonary embolism, PE) be to enter pulmonary circulation because the thrombosis of deep venous thrombosis or right cardiac cavity around comes off, stop up pulmonary artery or its branch, and then a series of clinical pathology physiological changes taking pulmonary circulatory function obstacle as master that cause, serious meeting causes sudden death.Research shows, causes that embolus that PE occurs is mainly derived from the thrombosis that limb deep vein or pelvic veins come off, and accounts for 60%～90% of embolus source.Can place a defecator at renal veins opening place below horizontal thus, the free embolus in interception blood, can prevent the generation of pulmonary infarction effectively, and this technology is just constantly applied to clinical treatment and has obtained very good effect at present.
According to thrombus filter in vivo the difference of retention time can be divided into: permanent filter and recyclable filter.Permanent filter can only forever be placed, and can not take out.But may there is corresponding complication in the type filter, as be shifted for a long time, caval vein perforation, local thrombus forms, inferior vena cava obstruction etc.Patient needs long-term taking anticoagulant simultaneously, and this has brought significant limitation to practical application.Recyclable filter starts to apply in 10 years in the past, and it can (be generally 3 months) within a certain period of time and take out in body, thereby has avoided the shortcoming of Permanent implantation filter.
According to technological essence, approaching technical side of the present invention is most the removable vena cava filter that comprises the pole with axial bend, comprises multiple main struts, and it has the first end linking together along the longitudinal axis.This main strut be delivered to closure state during blood vessel and and the open mode of blood vessel while engaging between be mobilizable.Each main strut comprises Part I, Part II and axial bend.Part I extends and is conventionally arranged in the plane of the Part I crossing with the longitudinal axis from one section.Axial bend is directed along the circumferencial direction with respect to the longitudinal axis.Part II be conventionally arranged on the plane of the Part II of the Plane intersects of Part I in and end at anchor hook (application number: 200580032687.6)
But this known device has the shortcoming of: in the time entering the release of caval vein blood vessel, if inclination, skew etc. appear in device, releasing device can not be finely tuned the center to blood vessel by the axis of this device.This device is not only unfavorable for catching of thrombosis after implanting so, also may cause that filter displacement, filter fracture, inferior vena cava thrombosis form, vein is bored a hole and pulmonary infarction (PE) recurrence equivalent risk.
Therefore, the implantation process of thrombus filter is also very important.A kind of novel thrombus filter of the present invention and delivery system, there is good accurate location and be easy to the performance manipulating, prevent that the bad phenomenon such as location mistake, inclination, skew from appearring in filter in the time discharging, it also has after excellent implantation simultaneously stability and thrombosis catch effect.
summary of the invention
The above-mentioned defect existing in order to solve prior art, this utility model provides a kind of thrombus filter and delivery system thereof.
According to one side of the present utility model, relate to a kind of thrombus filter, described thrombus filter is provided with the guidewire lumen that runs through described end in end.Specifically, described thrombus filter end can be provided with recovering hook towards far-end; Main strut and time pole can be extended towards near-end in end, jointly form diamond-shaped element filter grid.
Described main strut can also extend and is provided with counter-jib; Described pole junction can also be extended and be provided with supporting leg.
Described supporting leg can be provided with fixing barb at free end, and described fixing barb direction is outside back to central shaft.
According on the other hand of the present utility model, also relate to a kind of thrombus filter delivery system, described thrombus filter delivery system at least has the first state and the second state, under described the first state, described delivery system comprises guiding catheter and pusher, and the head end of described pusher is provided with arc seal wire; Under described the second state, described delivery system also comprises above-mentioned thrombus filter.
Further, the external diameter of described arc seal wire is less than the internal diameter of described guidewire lumen.Described pusher is provided with sleeve pipe, and described sleeve pipe one end and pusher handle join, and the other end and thrombus filter end join.Described sleeve pipe external diameter is greater than described guidewire lumen internal diameter.Described arc seal wire, from described guidewire lumen, departs from described filter shaft alignment remote extension.
Particularly, described arc seal wire can be stainless steel silk.
This utility model provides the thrombus filter with guidewire lumen, can adopt the integrated cutting of metal pipe material laser of ultra-strong elasticity memory function to form.
The processing technique of described recovering hook is formed by the cutting of laser screw type.
Described counter-jib is " S " type structure.
Described diamond-shaped element end is provided with 6 supporting legs.
Described supporting leg is uniformly distributed along filter axis.
The quantity of described fixing barb is less than or equals the quantity of supporting leg.
Described guiding catheter center is provided with a passage, and the external diameter of described sleeve pipe is slightly less than the passage internal diameter of guiding catheter.
This utility model embodiment has at least realized following beneficial effect:
This utility model by the pusher with arc seal wire when being pushed to off-position with the thrombus filter of guidewire lumen, in dispose procedure, the arc seal wire that doctor can utilize the outer handle of rotation pusher that power is passed to pusher end is finely tuned the position of filter, reaches accurate location, does not tilt, is not offset;
The integrated cutting structure of this utility model laser, the situation of having avoided the filter of silk material establishment type to tie a knot in dispose procedure occurs;
This utility model is recyclable filter, the complication of effectively having avoided permanent filter to bring;
This utility model adopts gimbal lever's structure, can make filter after implantation, keep balance, does not tilt.
In this utility model, the rhombus filter screen structure of classics, can effectively carry out thrombosis seizure;
The displacement risk that the impact that fixing barb design in this utility model can effectively reduce blood flow brings to filter.
brief description of the drawings
By the description of carrying out below in conjunction with accompanying drawing, above and other object of the present utility model and feature will become apparent, wherein:
Fig. 1 is this utility model dispose procedure schematic diagram in postcava;
Fig. 2 a and Fig. 2 b are the embodiment mono-of thrombus filter and the structural representation of embodiment bis-with guidewire lumen in this utility model;
Fig. 3 is the side view with the thrombus filter embodiment mono-of guidewire lumen in this utility model;
Fig. 4 is the top view with the thrombus filter embodiment bis-of guidewire lumen in this utility model;
Fig. 5 is A portion enlarged diagram in Fig. 4;
Pusher schematic diagram in delivery system in Fig. 6 this utility model;
Fig. 7 be in this utility model in delivery system pusher filter is pushed to the schematic diagram in guiding catheter;
Fig. 8 is the cutaway view of I part in Fig. 7;
Fig. 9 is the schematic diagram of this utility model half release conditions.
detailed description of the invention
Below, describe with reference to the accompanying drawings embodiment of the present utility model in detail.
Near-end described in the utility model refers to one end of the person that approaches operation technique, and described far-end refers to the one end away from operation technique person.
With thrombus filter and the delivery system thereof of guidewire lumen, it includes filter main body 1, guiding catheter 2, pusher 3 as can be seen from Figure 1.
Can find out that from Fig. 2 a, Fig. 2 b, Fig. 3 the far-end of filter main body 1 is end, is provided with recovering hook 11 towards far-end; Main strut 121 is extended towards recovering hook 11 rightabouts (being near-end) in end, inferior pole 122, two main struts 121 and twice poles 122 have formed diamond-shaped element filter grid 12, and interconnective filter grid forms the drainage screen of filter jointly, sees Fig. 4; Main strut 121 extensions are provided with counter-jib 13, see Fig. 4; Twice pole 122 junctions extensions are provided with supporting leg 14, see Fig. 4; Supporting leg 14 free ends are provided with fixing barb 15, see Fig. 4, and fixing barb 15 directions are outside back to central shaft, see Fig. 2 a, 2b.
The head end of pusher 3 is provided with arc seal wire 31 as can be seen from Figures 6 and 7, and pusher 3 rear ends are sleeve pipe 32, and what sleeve pipe 32 connected is the handle 33 of pusher 3.
Filter body 1 of the present invention is to adopt the integrated cutting of metal pipe material laser of ultra-strong elasticity memory function to form, and is cone-shaped, and wherein the processing technique of recovering hook 11 is formed by the cutting of laser screw type.Diamond-shaped element filter grid 12 in filter main body is made as 6; Counter-jib 13 is made as 6, sees embodiment mono-Fig. 2 a, also can be 3, sees embodiment bis-Fig. 2 b, and counter-jib 13 is " S " type structure; The quantity of supporting leg 14 is identical with the quantity of filter grid 12; The quantity of fixing barb 15 is less than or equals the quantity of supporting leg 14, can be 3～6.
Guiding catheter of the present invention 2 centers are provided with passage and push filter main body 1 for pusher 3 and arrive off-position.In pusher 3, head end arc seal wire 31 length are 70～110mm, and it is core that the material of arc seal wire 31 adopts stainless steel silk, and outside scribbles PTFE coating; Sleeve pipe 32 materials of pusher 3 rear ends are PEBAX, PE, nylon etc., and the external diameter of sleeve pipe 32 is slightly less than the passage internal diameter of guiding catheter.It is core that the material of arc seal wire 31 adopts stainless steel silk, and outside scribbles PTFE coating; Arc seal wire 31 is L sigmoid arc before entering caval vein, enters caval vein and encounters caval vein wall afterwards, in the situation that having active force, is S shape after auto Deformation.Sleeve pipe 32 is for moving ahead in the interior promotion filter of conduit 2 main body 1, and the external diameter of sleeve pipe 32 is more than or equal to the external diameter of filter main body 1, is slightly less than the passage internal diameter of guiding catheter simultaneously.
The present embodiment provides filter main body 1, and end is provided with guidewire lumen 16, and guidewire lumen 16, for from the close-by examples to those far off running through the through hole of filter main body 1 end, is shown in Fig. 5.The head end of pusher 3 is provided with arc seal wire 31, sees Fig. 6.When operation, arc seal wire 31 is through guidewire lumen 16, when filter main body 1 is during in half release conditions, see Fig. 9, the arc seal wire 31 of head end bending contacts with venous blood tube wall 4, and arc seal wire 31 has produced active force to blood vessel wall 4 like this, under contrast machine DSA, can observe, if the head end deflection of filter main body 1 on one side, the handle 33 that rotates pusher 3, passes to front end arc seal wire 31 by power, and arc seal wire 31 drives filter main body 1, by its fine position, reach a function to the heart.
The dispose procedure of thrombus filter that the present embodiment provides is: first guiding catheter 2 is sent to postcava 4 by femoral vein, filter main body 1 is through by guidewire lumen 16 on the head end arc seal wire 31 of pusher 3 towards the direction of far-end according to recovering hook 11 simultaneously, then pusher 3 carries filter main body 1 and enters in the bore passages of guiding catheter 2 by guiding catheter 2 afterbodys, push forward pusher 3, filter main body 1 enters in guiding catheter 2 inner chambers, Fig. 8 is shown in by schematic diagram, last pusher 3 is delivered to postcava off-position along guiding catheter 2 by filter main body 1, because filter main body 1 is enclosed within on the leading portion arc seal wire 31 of pusher 3 always, therefore, can power be passed to arc seal wire 31 and controls by the handle of pusher 3 33 release conditions of filter main body 1.The method is simple, is easy to manipulation, effectively avoids the bad phenomenon such as inclination, skew simultaneously.
Although represent with reference to preferred embodiment and described the present invention, it should be appreciated by those skilled in the art that in the case of not departing from the spirit and scope of the present invention that are defined by the claims, can carry out various amendments and conversion to these embodiment.
Claims (9)
1. a thrombus filter, is characterized in that, described thrombus filter is provided with the guidewire lumen that runs through described end in end, and described thrombus filter end goes out main strut and time pole towards proximal extension, jointly forms diamond-shaped element filter grid.
2. thrombus filter as claimed in claim 1, is characterized in that, described main strut extends and is provided with counter-jib; Described pole junction extension is provided with supporting leg.
3. thrombus filter as claimed in claim 2, is characterized in that, described supporting leg is provided with fixing barb at free end, and described fixing barb direction is outside back to central shaft.
4. a thrombus filter delivery system, is characterized in that, described thrombus filter delivery system at least has the first state and the second state,
Under described the first state, described delivery system comprises guiding catheter and pusher, and the head end of described pusher is provided with arc seal wire;
Under described the second state, described delivery system also comprises the arbitrary described thrombus filter of claim 1-3.
5. thrombus filter delivery system described in claim 4, is characterized in that, the external diameter of described arc seal wire is less than the internal diameter of described guidewire lumen.
6. thrombus filter delivery system described in claim 5, is characterized in that, described pusher is provided with sleeve pipe, and described sleeve pipe one end and pusher handle join, and the other end and thrombus filter end join.
7. thrombus filter delivery system described in claim 6, is characterized in that, described sleeve pipe external diameter is greater than described guidewire lumen internal diameter.
8. thrombus filter delivery system described in claim 7, is characterized in that, described arc seal wire, from described guidewire lumen, departs from described filter shaft alignment remote extension.
9. thrombus filter delivery system described in claim 8, is characterized in that, described arc seal wire is stainless steel silk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420107841.8U CN203815661U (en) | 2014-03-11 | 2014-03-11 | Thrombus filter and release system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420107841.8U CN203815661U (en) | 2014-03-11 | 2014-03-11 | Thrombus filter and release system thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203815661U true CN203815661U (en) | 2014-09-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420107841.8U Withdrawn - After Issue CN203815661U (en) | 2014-03-11 | 2014-03-11 | Thrombus filter and release system thereof |
Country Status (1)
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| CN (1) | CN203815661U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103815984A (en) * | 2014-03-11 | 2014-05-28 | 科塞尔医疗科技（苏州）有限公司 | Thrombus filter and release system thereof |
| CN107307921A (en) * | 2017-03-16 | 2017-11-03 | 杭州唯强医疗科技有限公司 | The vena cava filter of two-way controlled release |
| WO2018188456A1 (en) * | 2017-04-11 | 2018-10-18 | 杭州唯强医疗科技有限公司 | Two-way controllable release vena cava filter |
-
2014
- 2014-03-11 CN CN201420107841.8U patent/CN203815661U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103815984A (en) * | 2014-03-11 | 2014-05-28 | 科塞尔医疗科技（苏州）有限公司 | Thrombus filter and release system thereof |
| CN103815984B (en) * | 2014-03-11 | 2016-01-13 | 科塞尔医疗科技（苏州）有限公司 | Thrombus filter delivery system |
| CN107307921A (en) * | 2017-03-16 | 2017-11-03 | 杭州唯强医疗科技有限公司 | The vena cava filter of two-way controlled release |
| CN107307921B (en) * | 2017-03-16 | 2020-11-06 | 杭州唯强医疗科技有限公司 | Bidirectional controllable release vena cava filter |
| WO2018188456A1 (en) * | 2017-04-11 | 2018-10-18 | 杭州唯强医疗科技有限公司 | Two-way controllable release vena cava filter |
| US10856963B2 (en) | 2017-04-11 | 2020-12-08 | Hangzhou Wei Qiang Medical Technology Co., Ltd. | Inferior vena cava filter of bidirectional controlled placement |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140910 Effective date of abandoning: 20160113 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |