CN205041565U - Vena cave thrombus extractor - Google Patents
Vena cave thrombus extractor Download PDFInfo
- Publication number
- CN205041565U CN205041565U CN201520785638.0U CN201520785638U CN205041565U CN 205041565 U CN205041565 U CN 205041565U CN 201520785638 U CN201520785638 U CN 201520785638U CN 205041565 U CN205041565 U CN 205041565U
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- pole
- extractor
- stiff end
- thrombus
- main strut
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Abstract
The utility model discloses a vena cave thrombus extractor, include the tubular metal resonator that has a superstrong elastic memory function that forms by laser sculpture, the tubular metal resonator includes preceding stiff end, preceding main tributary pole, last time branch, well branch, back time branch, back main tributary pole, after -fixing were held. The utility model discloses an end of stiff end and after -fixing in the front all extension is equipped with set hook, the thrombus extractor can release the vena cave from internal jugular vein and femoral vein be two -way, set up a conical surface filter screen in filtering the net, the thrombus that the messenger wiped off is left concentratedly in conical surface filter screen, can prevent that the thrombus extractor from having partial thrombus to omit in the blood vessel at the in -process that shifts out, and the thrombus extractor is less at the impact force in the twinkling of an eye that releases the in -process produced, also can be very convenient take out the thrombus extractor of implanting in the blood vessel.
Description
Technical field
This utility model relates to medical instruments field, particularly relates to a kind of caval vein thrombosis extractor.
Background technology
Pulmonary embolism (is called for short pulmonary infarction pulmonaryembolism, PE) be because the thrombus breaks loose of around deep venous thrombosis or right cardiac cavity enters pulmonary circulation, blocking pulmonary artery or its branch, and then initiation is a series of based on the clinical pathology physiological change of pulmonary circulatory function obstacle, serious meeting causes sudden death.Research shows, the embolus causing PE to occur is mainly derived from the thrombosis that limb deep vein or pelvic veins come off, and accounts for 60% ~ 90% of embolus source.Pulmonary thromboembolism is a kind of severe complication after venous thrombosis, uses heparin effectively can treat pulmonary thromboembolism.But in some cases, must in postcava built-in a kind of machinery, stop embolus up, prevention or reduce pulmonary thromboembolism.Traditional surgical method interrupts Inferior Vena Cava Blood Flow with ligation or clamp, needs general anesthesia, and operation case fatality rate is high.Effective preventive measure of generally acknowledging at present comprises the strict bed rest of DVT acute stage, the anticoagulant therapy of system and placed cavity venous filter.Place a vena cava filter at postcava, can tackle the free embolus in blood, effectively can prevent the generation of pulmonary infarction, this technology is just constantly applied to clinical treatment and achieves good effect at present.
Vena cava filter be a kind of metal wire knitted or block of metal through the apparatus of laser engraving, put into postcava by special conveyer device, form netted safeguard structure and stop thrombosis larger in blood flow.These larger thrombosis often also the most easily cause fatefulue pulmonary embolism.Vena cava filter itself is to lower limb DVT without any therapeutical effect, and its meaning is the larger embolus blocking pulmonary artery generation pulmonary embolism of tissue loss.
Difference according to thrombus filter retention time in vivo can be divided into: permanent filter and recyclable filter.Permanent filter can only forever be placed, and can not take out.But the type filter may occur corresponding complication for a long time, as being shifted, caval vein is bored a hole, and local thrombus is formed, inferior vena cava obstruction etc.Patient needs long-term taking anticoagulant simultaneously, and this brings significant limitation to practical application.Recyclable filter started to apply in 10 years in the past, and it (can be generally 3 months) within a certain period of time in body and take out, thus avoids the shortcoming of Permanent implantation filter.But conventional filter cannot catch the thrombosis come off preferably, during release, instant impact is comparatively large, and device only has cover hook in one end, uses inconvenience.
Summary of the invention
The purpose of this utility model overcomes the deficiencies in the prior art, designs a kind of caval vein thrombosis extractor.
For achieving the above object, the technical scheme that this utility model adopts is:
A kind of caval vein thrombosis extractor, comprise by the metal tube with ultra-strong elasticity memory function of laser engraving, described metal tube comprises front stiff end, front main strut, previous pole, middle pole, rear time pole, rear main strut, rear stiff end, described front stiff end extends front main strut and previous pole towards rear extreme direction, front main strut and previous pole form filter grid jointly, the intersection point of every two previous poles extends a middle pole, the other end of described middle pole extends rear pole, main strut after the intersection point of time pole extends one after every two, rear time pole and rear main strut form " Y " shape bar jointly, described front stiff end and rear stiff end all extend and are provided with cover hook, cover hook internal chamber wall is provided with threaded steel bushing, a conical surface filter screen is provided with in described filter grid, the flexibility of described filter grid is identical with the flexibility of " Y " shape bar.
Further, described two front main struts and two previous poles form diamond-shaped element filter grid.
Further, the quantity of described diamond-shaped element filter grid is identical with the quantity of middle pole.
Further, the quantity of described " Y " shape bar is the half of middle pole quantity, and its root is connected with rear stiff end.
Positive beneficial effect of the present utility model:
1, be provided with cover hook by all to extend at front stiff end and rear stiff end, thrombosis extractor can from internal jugular vein and femoral vein be two-way is discharged into caval vein, thus makes the use of thrombosis extractor convenient.
2, by arranging a conical surface filter screen in filter grid, making the thrombosis wiped off leave concentratedly in conical surface filter screen, can in the process shifted out, have part thrombosis to omit in the blood vessel by anti-tampon extractor.
3, the flexibility of filter grid is arranged to identical with the flexibility of " Y " shape bar, the instant impact that thrombosis extractor produces in dispose procedure can be reduced, and the thrombosis extractor in implantable intravascular can be taken out easily.
Accompanying drawing explanation
Fig. 1 is front view of the present utility model
Fig. 2 is top view of the present utility model
The concrete meaning of number in the figure is: 1 is metal tube, and 2 is front stiff end, and 3 is front main strut, 4 is previous pole, 5 is middle pole, and 6 is rear pole, and 7 is rear main strut, 8 is rear stiff end, 9 is cover hook, and 10 is steel bushing, and 11 is conical surface filter screen, 12 is filter grid, and 12-1 is diamond-shaped element filter grid.
Detailed description of the invention
Specific embodiment of the utility model is described in detail below in conjunction with accompanying drawing.
See Fig. 1, shown in figure is a kind of caval vein thrombosis extractor, comprise by the metal tube 1 with ultra-strong elasticity memory function of laser engraving, described metal tube comprises front stiff end 2, front main strut 3, previous pole 4, middle pole 5, rear time pole 6, rear main strut 7, rear stiff end 8, described front stiff end 2 extends front main strut 3 and previous pole 4 towards rear extreme direction, front main strut 3 and previous pole 4 form filter grid 12 jointly, the intersection point of every two previous poles 4 extends a middle pole, the other end of described middle pole extends rear pole 6, main strut 7 after the intersection point of time pole 6 extends one after every two, rear time pole 6 and rear main strut 7 form " Y " shape bar jointly, described front stiff end 2 and rear stiff end 8 all extend be provided with cover hook 9, cover hook internal chamber wall is provided with threaded steel bushing 10, a conical surface filter screen 11 is provided with in described filter grid, the flexibility of described filter grid is identical with the flexibility of " Y " shape bar.
Further, described two front main struts and two previous poles form diamond-shaped element filter grid 12-1.
Further, the quantity of described diamond-shaped element filter grid 12-1 is identical with the quantity of middle pole 5.
Further, the quantity of described " Y " shape bar is the half of middle pole 5 quantity, and its root is connected with rear stiff end 8." Y " shape bar is that radial pattern is evenly distributed on circumferencial direction.Middle pole 5 is straight-bar, is uniformly distributed at circumferencial direction, thus forms a cylinder beam.Quantity due to " Y " shape bar is the half of the quantity of diamond-shaped element filter grid 12-1, so make thrombosis extractor on the whole in asymmetrical structure.
This utility model adopts to have ultra-strong elasticity memory alloy pipes laser engraving and form, and is an integrated design, without interface between Each part; It is netted in the conical surface under the state of release in the compressible state in compactron pencil.Removal of thromboses extractor when cover hook 9 is to make thrombosis extractor implant from human vein.This utility model front stiff end 2 and after fix 8 and all extend and be provided with cover hook 9, be in order to can from internal jugular vein and femoral vein is two-way is discharged into caval vein, make the use of thrombosis extractor more convenient.
In operation, when thrombosis extractor implanted by needs, need thrombosis extractor to be delivered in caval vein by transmitter.The transmitter supporting with thrombosis extractor has one to connect seal wire, connects seal wire and the one end near thrombus filter is provided with external screw thread, therefore just can be threaded connection between transmitter and thrombosis extractor and be fixed.When by thrombosis extractor implant cavity vein, first thrombosis extractor being compressed in advance and be placed on transmitter and stick up in pipe, when delivering to caval vein appropriate location, holding the handle of transmitter, front, slowly rotate thrombosis extractor to send and stick up pipe.Because thrombosis extractor has ultra-strong elasticity, so stick up in the process of pipe shifting out, thrombosis extractor also expands.Middle pole 5 is close in blood vessel wall, and now rotation connection seal wire just can control thrombosis extractor and rotate in the blood vessel, and just can wipe the thrombosis in blood vessel wall off, the thrombosis be scraped is collected in conical surface filter screen 11.
"front", "rear" described in this utility model refers to the upstream and downstream of thrombosis extractor in human vein.
Finally should be noted that: above embodiment is only in order to illustrate that the technical solution of the utility model is not intended to limit; Although be described in detail this utility model with reference to preferred embodiment, those of ordinary skill in the field have been to be understood that; Still can modify to detailed description of the invention of the present utility model or equivalent replacement is carried out to portion of techniques feature; And not departing from the spirit of technical solutions of the utility model, it all should be encompassed in the middle of the technical scheme scope of this utility model request protection.
Claims (4)
1. a caval vein thrombosis extractor, comprise by the metal tube with ultra-strong elasticity memory function of laser engraving, described metal tube comprises front stiff end, front main strut, previous pole, middle pole, rear time pole, rear main strut, rear stiff end, described front stiff end extends front main strut and previous pole towards rear extreme direction, front main strut and previous pole form filter grid jointly, the intersection point of every two previous poles extends a middle pole, the other end of described middle pole extends rear pole, main strut after the intersection point of time pole extends one after every two, rear time pole and rear main strut form " Y " shape bar jointly, it is characterized in that: described front stiff end and rear stiff end all extend and be provided with cover hook, cover hook internal chamber wall is provided with threaded steel bushing, a conical surface filter screen is provided with in described filter grid, the flexibility of described filter grid is identical with the flexibility of " Y " shape bar.
2. caval vein thrombosis extractor according to claim 1, is characterized in that: described two front main struts and two previous poles form diamond-shaped element filter grid.
3. caval vein thrombosis extractor according to claim 2, is characterized in that: the quantity of described diamond-shaped element filter grid is identical with the quantity of middle pole.
4. caval vein thrombosis extractor according to claim 1, is characterized in that: the quantity of described " Y " shape bar is the half of middle pole quantity, and its root is connected with rear stiff end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520785638.0U CN205041565U (en) | 2015-10-12 | 2015-10-12 | Vena cave thrombus extractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520785638.0U CN205041565U (en) | 2015-10-12 | 2015-10-12 | Vena cave thrombus extractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205041565U true CN205041565U (en) | 2016-02-24 |
Family
ID=55335191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520785638.0U Expired - Fee Related CN205041565U (en) | 2015-10-12 | 2015-10-12 | Vena cave thrombus extractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205041565U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105852933A (en) * | 2016-04-27 | 2016-08-17 | 中国人民解放军第二军医大学 | Lacing type ureteral stone blocking dislodger |
| CN106937892A (en) * | 2017-05-12 | 2017-07-11 | 谷涌泉 | One kind length puts die cavity venous filter |
| CN107374777A (en) * | 2017-08-25 | 2017-11-24 | 重庆医科大学附属第二医院 | It is a kind of be easily recycled and safety interim Vena cava filter |
-
2015
- 2015-10-12 CN CN201520785638.0U patent/CN205041565U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105852933A (en) * | 2016-04-27 | 2016-08-17 | 中国人民解放军第二军医大学 | Lacing type ureteral stone blocking dislodger |
| CN106937892A (en) * | 2017-05-12 | 2017-07-11 | 谷涌泉 | One kind length puts die cavity venous filter |
| CN106937892B (en) * | 2017-05-12 | 2019-02-19 | 谷涌泉 | A kind of length sets type vena cava filter |
| CN107374777A (en) * | 2017-08-25 | 2017-11-24 | 重庆医科大学附属第二医院 | It is a kind of be easily recycled and safety interim Vena cava filter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160224 Termination date: 20171012 |