CN204072203U - A kind of spring-like nature tract foreign body plugging device - Google Patents
A kind of spring-like nature tract foreign body plugging device Download PDFInfo
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- CN204072203U CN204072203U CN201420521420.XU CN201420521420U CN204072203U CN 204072203 U CN204072203 U CN 204072203U CN 201420521420 U CN201420521420 U CN 201420521420U CN 204072203 U CN204072203 U CN 204072203U
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- plug
- foreign body
- conduit
- plugging device
- tract
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Abstract
The utility model discloses a kind of spring-like nature tract foreign body plugging device, comprise a seal wire, a conduit, a plug, described wire distal is through described conduit, described plug launches for stretching and the metal coil spring structure of conduit described in whole retraction, described wire distal is connected with described plug near-end, described guidewire proximal stretches out outside described conduit, and described plug outsourcing is provided with polymer material film.This utility model is applicable to carry out shutoff to barriers such as the thrombosis in natural tract, calculus and fixes, and is then removed nature tract according to specific needs; Wherein, the plug of natural tract foreign body plugging device is helical spring structure, is surrounded by polymer material film and prevents foreign body less after crushed from passing through outside this plug, but ensures that flushing liquid can pass through; In addition, the plug of natural tract foreign body plugging device can retract in conduit, and when by endoscopic working channel, keeps this state, be convenient to this natural tract foreign body plugging device smoothly by work cavity and foreign body.
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 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 to a certain degree shutoff to most of barrier, but membranaceous plug folds irregular disclosed in it, plugging effect is not good, still less barrier is had through the gap this bolt shape plug and natural tract wall, cause and calculus moves and removes thorough, and this membranaceous plug not easily takes in conduit.
Utility model content
?the purpose of this utility model is to solve above-mentioned Problems existing, provides a kind of natural tract foreign body plugging device.
The technical solution of the utility model is as follows:
A kind of spring-like nature tract foreign body plugging device, comprise a seal wire, a conduit, a plug, described wire distal is through described conduit, described plug launches for stretching and the metal coil spring structure of conduit described in whole retraction, and the described metal coil spring structure oval section volute spring structure that to be the wide far-end of near-end narrow, described wire distal is connected with described plug near-end, and described guidewire proximal stretches out outside described conduit, and described plug outsourcing is provided with polymer material film.
Preferably, described plug far-end is provided with guide's end.
Compared with prior art, the beneficial effects of the utility model are as follows:
Spring-like nature tract foreign body plugging device of the present utility model is applicable to carry out shutoff to barriers such as the thrombosis in natural tract, calculus and fixes, and is then removed nature tract according to specific needs; Wherein, the plug of natural tract foreign body plugging device of the present utility model is helical spring structure, and plugging effect is better, and adopts metal material to make (such as nitinol alloy wire), easily takes in conduit; In addition, be surrounded by polymer material film as one or more layers outside this plug, this macromolecular material membrane material is comparatively soft, such as, can use polyurethane material, and the effect of this film prevents foreign body less after crushed from passing through, but ensures that flushing liquid can pass through;
In addition, the plug of spring-like nature tract foreign body plugging device of the present utility model can all retract in conduit, and when by endoscopic working channel, keep this state, be convenient to this spring-like nature tract foreign body plugging device smoothly by work cavity and foreign body.
Accompanying drawing explanation
Fig. 1 is the normality structural representation of the spring-like nature tract foreign body plugging device of this utility model embodiment;
Fig. 2 is the structural representation that the spring-like nature tract foreign body plugging device of this utility model embodiment retracts in conduit;
Fig. 3 is the schematic diagram of the spring-like nature tract foreign body plugging device shutoff foreign body of this utility model embodiment.
Detailed description of the invention
This utility model provides a kind of spring-like nature tract foreign body plugging device, comprise a seal wire, a conduit, a plug, described wire distal is through described conduit, described plug launches for stretching and the metal coil spring structure of conduit described in whole retraction, and the described metal coil spring structure oval section volute spring structure that to be the wide far-end of near-end narrow, described wire distal is connected with described plug near-end, described guidewire proximal stretches out outside described conduit, and described plug outsourcing is provided with polymer material film.
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.
This utility model plugging device is inserted in nature tract by interventional technique, carries out shutoff to natural tract.Generally speaking, this plugging device is used for moving and removing of foreign body in nature tract, also can be used for the fixing of foreign body, particularly to foreign body carry out shutoff fixing after, then carry out fragmentation; Also may be used for blood vessel puncture anastalsis.Below only describe this plugging device to remove for ureteral calculus, but this utility model can there is wider application when meeting plugging device operation principle, as mentioned previously, may be used for blood vessel puncture hemostasis, shutoff etc. is carried out to thrombosis in blood vessel.
In the ureter of calculus between bladder and kidney, plugging device arrives lesions position with traditional Ureteroscopy, and Ureteroscopy does not describe at this.
Embodiment
Refer to Fig. 1 and Fig. 2, the present embodiment provides a kind of spring-like nature tract foreign body plugging device 10, it comprises a seal wire 18, one conduit 16, one plug 14, the far-end of seal wire 18 is through conduit 16, plug 14 is can stretch to launch and the cone-shaped metal helical spring structure that all the wide far-end of near-end of retraction conduit 16 is narrow, the schematic diagram that plug 14 all enters conduit 16 refers to Fig. 2, seal wire 18 far-end is connected with plug 14 near-end, seal wire 18 near-end stretches out outside conduit 16, plug 14 outsourcing is provided with polymer material film, plug 14 far-end is provided with guide and holds 12.
The spring-like nature tract foreign body plugging device 10 of the present embodiment refers to Fig. 2 and Fig. 3 for the usage of shutoff calculi in vivo or foreign body 22, the state that this spring-like nature tract foreign body plugging device 10 all enters conduit 16 with plug in Fig. 2 14 enters natural tract 24 in body, after crossing calculus or foreign body 22, the far-end control end 20 controlling seal wire 18 makes plug 14 stretch out from conduit 16 and form helical spring structure, by calculus or foreign body 22 shutoff, afterwards plug 14 is dragged to predetermined direction at natural tract 24, also after calculus or foreign body can being carried out shutoff, with the lithotrite of rubble apparatus as laser or other energy, calculus or foreign body are smashed, then the calculus after pulverizing or foreign body are dragged to bladder or sheath pipe, because the plugging action of plug 14 and the shutoff of polymer material film and collecting action, can prevent the calculus that smashes or foreign body from moving to place outside anticipation in rubble process.
In this utility model, by the method that spring-like nature tract foreign body plugging device 10 inserts nature tract be: by the plug 14 of cone-shaped metal helical spring structure all or major part bounce back in conduit 16, then conduit 16 is inserted nature tract, then promote seal wire 18 and make the plug 14 of cone-shaped metal helical spring structure stretch out conduit 16 and form plugging structure.
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.
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.
Spring-like nature tract foreign body plugging device of the present utility model is applicable to carry out shutoff to barriers such as the thrombosis in natural tract, calculus and fixes, and is then removed nature tract according to specific needs; Wherein, the plug of natural tract foreign body plugging device of the present utility model is helical spring structure, and plugging effect is better, and adopts metal material to make (such as nitinol alloy wire), easily takes in conduit; In addition, be surrounded by polymer material film as one or more layers outside this plug, this macromolecular material membrane material is comparatively soft, such as, can use polyurethane material, and the effect of this film prevents foreign body less after crushed from passing through, but ensures that flushing liquid can pass through;
In addition, the plug of spring-like nature tract foreign body plugging device of the present utility model can all retract in conduit, and when by endoscopic working channel, keep this state, be convenient to this spring-like nature tract foreign body plugging device smoothly by work cavity and foreign body.
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 (2)
1. a spring-like nature tract foreign body plugging device, comprise a seal wire, a conduit, a plug, described wire distal is through described conduit, it is characterized in that, described plug launches for stretching and the metal coil spring structure of conduit described in whole retraction, and the described metal coil spring structure oval section volute spring structure that to be the wide far-end of near-end narrow, described wire distal is connected with described plug near-end, described guidewire proximal stretches out outside described conduit, and described plug outsourcing is provided with polymer material film.
2. spring-like nature tract foreign body plugging device according to claim 1, it is characterized in that, described plug far-end is provided with guide's end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420521420.XU CN204072203U (en) | 2014-09-11 | 2014-09-11 | A kind of spring-like nature tract foreign body plugging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420521420.XU CN204072203U (en) | 2014-09-11 | 2014-09-11 | A kind of spring-like nature tract foreign body plugging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204072203U true CN204072203U (en) | 2015-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420521420.XU Expired - Fee Related CN204072203U (en) | 2014-09-11 | 2014-09-11 | A kind of spring-like nature tract foreign body plugging device |
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|---|---|
| CN (1) | CN204072203U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105748127A (en) * | 2016-04-27 | 2016-07-13 | 中国人民解放军第二军医大学 | Diaphragm type body cavity blocking equipment |
-
2014
- 2014-09-11 CN CN201420521420.XU patent/CN204072203U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105748127A (en) * | 2016-04-27 | 2016-07-13 | 中国人民解放军第二军医大学 | Diaphragm type body cavity blocking equipment |
| CN105748127B (en) * | 2016-04-27 | 2018-12-14 | 中国人民解放军第二军医大学 | A kind of diaphragm type body cavity obstruction appliance |
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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 |
Granted publication date: 20150107 Termination date: 20200911 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |