CN204072223U - A kind of natural tract foreign body spiral plugging device - Google Patents
A kind of natural tract foreign body spiral plugging device Download PDFInfo
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- CN204072223U CN204072223U CN201420522174.XU CN201420522174U CN204072223U CN 204072223 U CN204072223 U CN 204072223U CN 201420522174 U CN201420522174 U CN 201420522174U CN 204072223 U CN204072223 U CN 204072223U
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- plug
- foreign body
- seal wire
- plugging device
- conduit
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Abstract
The utility model discloses a kind of natural tract foreign body spiral plugging device, comprise a seal wire, a conduit, a plug, described seal wire one end is through conduit and plug cavity, described plug far-end and described seal wire are fixed, described plug edge be provided with hardness high and with described plug shape all-in-one-piece stiffened edge, form the folding mode of helix-coil after described plug axial tension.Natural tract foreign body plugging device of the present utility model, plug is provided with stiffened edge, after axial tension, the folding mode of helix-coil can be formed, such energy forms better plugging effect, prevent foreign body (such as ureteral calculus) from passing in operation process, lower operation risk further.
Description
Technical field
This utility model relates to a kind of medical device for barrier shutoff in natural tract, particularly relates to a kind of natural tract foreign body spiral plugging device fixed and remove for barrier in natural tract.
Background technology
Urinary system calculus is one of commonly encountered diseases of Urology Surgery, in Urology Surgery inpatient, occupy first place.The epidemiologic data display of American-European countries, at least there is 1 urinary system calculus in life at it in the people of 5% ~ 10%, European urinary system calculus year neopathy rate be about 100 ~ 4,00/,100,000 people.China's urinary system calculus sickness rate is 1% ~ 5%, and south is up to 5% ~ 10%; Year, neopathy rate was about 150 ~ 2,00/,100,000 people, and wherein the patient of 25% needs hospitalization.In recent years, the sickness rate of China's urinary system calculus has increase trend, is one of 3 maximum size districts occurred frequently in the world.The method of current treatment renal calculus mainly contains expectant treatment, open operation, extracorporeal shock-wave lithotripsy (ESWL) (ESWL), Percutaneous nephrolith-otomy (PCNL), ureteroscope rubble (URL), wherein ESWL and PCNL is the method relatively commonly used, ESWL is applicable to the treatment that diameter is less than 2cm calculus, larger pyelolithiasis and lower calyx calculus; And the main method for the treatment of ureteral calculus is ureteroscope lithotrity (URL).
In the operation process carrying out PCNL and URL, formed to reduce the residual stone of PCNL and in URL process, calculus is moved, Chinese utility model patent 200920074670.2 discloses a kind of natural tract plugging device, comprise a seal wire, a conduit, a plug, described seal wire one end is through conduit and plug cavity, and described plug far-end and seal wire are fixed, tractive guidewire proximal, the plug launched is axially compressed, and forms bolt shape plug.Although the bolt shape plug in the program can carry out shutoff to most of barrier, still have less barrier easily through the gap this bolt shape plug and natural tract wall, therefore its plugging effect needs to improve further.
Utility model content
?the purpose of this utility model is to solve above-mentioned Problems existing, provides a kind of natural tract foreign body spiral plugging device.
The technical solution of the utility model is as follows:
A kind of natural tract foreign body spiral plugging device, comprise a seal wire, a conduit, a plug, described seal wire one end is through conduit and plug cavity, described plug far-end and described seal wire are fixed, described plug edge be provided with hardness high and with described plug shape all-in-one-piece stiffened edge, form the folding mode of helix-coil after making described plug axial tension.
The bilateral of described plug or one-sided there is stiffened edge.
The stiffened edge of described plug runs through plug described in whole described plug or through part.
Preferably, the bilateral of described plug has stiffened edge, and described stiffened edge runs through whole described plug.
Compared with prior art, the beneficial effects of the utility model are as follows:
Natural tract foreign body plugging device of the present utility model, plug is provided with stiffened edge, after axial tension, the folding mode of helix-coil can be formed, such shape can form better plugging effect, prevent foreign body (such as ureteral calculus) from passing in operation process, lower operation risk further.
Accompanying drawing explanation
Fig. 1 is the normality structural representation of the natural tract foreign body spiral plugging device of this utility model embodiment;
Fig. 2 is the A-A cross section structure schematic diagram of the natural tract foreign body spiral plugging device of this utility model embodiment;
Fig. 3 is the structural representation after the natural tract foreign body spiral plugging device axial tension of this utility model embodiment;
Fig. 4 is the schematic diagram of natural tract foreign body spiral plugging device for the shutoff of natural tract foreign body of this utility model embodiment.
Detailed description of the invention
This utility model provides a kind of natural tract foreign body spiral plugging device, comprise a seal wire, a conduit, a plug, described seal wire one end is through conduit and plug cavity, described plug far-end and described seal wire are fixed, described plug edge be provided with hardness high and with described plug shape all-in-one-piece stiffened edge, form the folding mode of helix-coil after described plug axial tension.
Below in conjunction with the drawings and specific embodiments, this utility model is further described.Following examples only for illustrating, and are not used in restriction protection domain of the present utility model.
Embodiment
Refer to Fig. 1, Fig. 2 and Fig. 3, the present embodiment provides a kind of natural tract foreign body spiral plugging device 10, comprise a guide and hold 12, one seal wire 18, one conduit 16, one plug 14, seal wire tractive end 20, seal wire 18 one end is through conduit 16 and plug 14 cavity, plug 14 far-end and seal wire 18 are fixed, plug 14 edge be provided with hardness high and with this plug shape all-in-one-piece stiffened edge 14A, this stiffened edge 14A refers to Fig. 2, the folding mode of helix-coil is formed after the setting of stiffened edge 14A makes plug 14 axial tension, the folding mode of this helix-coil refers to Fig. 3.These stiffened edge parts can select macromolecular material (such as nylon), or metal material (such as nitinol alloy wire), preferably have the nitinol alloy wire of shape memory function.
Plug 14 can bilateral or one-sidedly have stiffened edge 14A; The stiffened edge of plug 14 can run through whole plug or through part plug.
Preferably in the present embodiment, the bilateral of plug 14 has stiffened edge 14A, and stiffened edge runs through whole plug 14.
Natural tract foreign body plugging device of the present utility model, plug 14 is provided with stiffened edge 14A, after axial tension, plug 14 can form the folding mode of helix-coil, such shape can form better plugging effect, prevent foreign body 22(such as ureteral calculus) pass in operation process, lower operation risk further.Its application schematic diagram refers to Fig. 4.
In this utility model, the method that natural tract foreign body stopper 10 inserts nature tract is had a variety of.As first conduit 16 inserted nature tract, then the seal wire 18 being connected with plug 14 inserted conduit 16 and stretch out from conduit 16 far-end, tractive plugging device 10 proximal guidewire tractive end (i.e. far-end control end) 20, plug 14, by the barrier effect of conduit 16, is compressed into bolt shape; Also the seal wire 18 being connected with plug 14 first can be inserted in nature tract, and then insert conduit 16 along seal wire 18, after conduit 16 puts in place, tractive catheter proximal end seal wire tractive end 20, the plug 14 of expansion, is compressed into bolt shape; Also conduit 16 and the seal wire 18 being connected with plug 14 can be inserted nature tract simultaneously, after putting in place, tractive seal wire, realizes shutoff function, and the plug 14 now launched can be positioned at conduit 16, also can partly or entirely stretch outside conduit 16, if plug 14 is all or part of be positioned at conduit 16, retreats conduit 16 or push away before plug 14, making plug 14 stretch out conduit 16, tractive plug 14 again, also can realize shutoff function.Preferred method in advance seal wire 18 is passed conduit 16, far-end and the seal wire 18 of plug 14 are fixed or are bonded together, plug 14 near-end and conduit 16 are fixed or are bonded together, and form the entirety connected, this entirety has good self-aiming function, when entering nature tract, plug 14 and conduit 16 keep geo-stationary, are conducive to entering and manipulate plugging device 10, after plugging device 10 puts in place, tractive seal wire 18 near-end, forms bolt shape plug.
12 are held with guide at the far-end of plug 14, guide holds 12 can be that the seal wire 18 extended forms, also can be made up of metal tube, polymer pipe, or tinsel, metal tube, polymer pipe complex composition, guide holds 12 structures can adopt known guidewire tip structure.Preferably be made up of the seal wire 18 extended, the polymeric jacket of the outer coating one deck softness again of seal wire 18 of prolongation.Guide's effect of 12 of holding improves the self-aiming ability of plugging device 10 in natural tract, makes device have better compliance, improves the ability that plugging device 10 passes through foreign body.
Plug 14 can by membranoid substance, fabric, non-woven fabrics, or their complex composition, material can select the polymer to human non-toxic, as materials such as polytetrafluoroethylene (PTFE), polyethylene (PE), perfluoroalkoxy (PFA), polyurethane (PU), perfluoro methyl vinyl ether (MFA), perfluoropropylvinylether (PPVE), nylon, polyester, fibroins, select the principle of plug material to be formed compression or foldable structure to be one relatively soft, the material of nature tract wound can not be caused.The plug 14 launched, its length range is 1-10cm.The plug 14 that tractive launches, plug 14 length is short, and form bolt shape structure, at this moment the width of plug 14 is similar to the tube chamber of shutoff, and width range is 3-20mm.Plug 14 thickness launched generally all is less than 1mm.Also can apply lubricant coating on the surface of plug 14, make its propelling resistance in natural tract less.
The seal wire 18 of tractive, it can be filament, comprise tinsel and nonmetallic silk thread, shape can be the shapes such as circular, square, pancake, also can be tubular structure, comprise metal tube and non-metallic pipe, preferably there is the seal wire of guiding function, comprise the rustless steel seal wire that those skilled in the art know, titanium alloy seal wire etc.
This utility model preferred embodiment is only above.Preferred embodiment does not have all details of detailed descriptionthe, does not limit the detailed description of the invention that this utility model is only described yet.Obviously, according to the content of this description, can make many modifications and variations.This description is chosen and is specifically described these embodiments, is to explain principle of the present utility model and practical application better, thus makes one of ordinary skill in the art can utilize this utility model well.This utility model is only subject to the restriction of claims and four corner and equivalent.
Claims (4)
1. a natural tract foreign body spiral plugging device, comprise a seal wire, a conduit, a plug, described seal wire one end is through conduit and plug cavity, described plug far-end and described seal wire are fixed, it is characterized in that, described plug edge be provided with hardness high and with described plug shape all-in-one-piece stiffened edge, form the folding mode of helix-coil after making described plug axial tension.
2. natural tract foreign body spiral plugging device according to claim 1, is characterized in that, the bilateral of described plug or one-sidedly have stiffened edge.
3. natural tract foreign body spiral plugging device according to claim 1, it is characterized in that, the stiffened edge of described plug runs through plug described in whole described plug or through part.
4. the natural tract foreign body spiral plugging device according to claim 1 or 2 or 3, it is characterized in that, the bilateral of described plug has stiffened edge, and described stiffened edge runs through whole described plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420522174.XU CN204072223U (en) | 2014-09-11 | 2014-09-11 | A kind of natural tract foreign body spiral plugging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420522174.XU CN204072223U (en) | 2014-09-11 | 2014-09-11 | A kind of natural tract foreign body spiral plugging device |
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| Publication Number | Publication Date |
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| CN204072223U true CN204072223U (en) | 2015-01-07 |
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| CN201420522174.XU Active CN204072223U (en) | 2014-09-11 | 2014-09-11 | A kind of natural tract foreign body spiral plugging device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106983562A (en) * | 2016-03-23 | 2017-07-28 | 卢锦山 | One kind is blockaded for ureter subtracts a device with traction force |
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2014
- 2014-09-11 CN CN201420522174.XU patent/CN204072223U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106983562A (en) * | 2016-03-23 | 2017-07-28 | 卢锦山 | One kind is blockaded for ureter subtracts a device with traction force |
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