CN204192700U - The efficient extractor of urinary system calculus - Google Patents
The efficient extractor of urinary system calculus Download PDFInfo
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- CN204192700U CN204192700U CN201420388310.0U CN201420388310U CN204192700U CN 204192700 U CN204192700 U CN 204192700U CN 201420388310 U CN201420388310 U CN 201420388310U CN 204192700 U CN204192700 U CN 204192700U
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- system calculus
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Abstract
This utility model relates to the efficient extractor of a kind of urinary system calculus, it is provided with conduit and seal wire, and the far-end of described seal wire is provided with basket, described basket is fixed with cover stone pocket, described cover stone pocket is by preformed growth bar shaped pocketed and the one side of near-end is opening, and cover stone pocket is also provided with micropore.The efficient extractor of urinary system calculus of the present utility model disposablely can extract a large amount of rubble, clot and pus block, be not subject to the restriction of ureter lumen diameter or operating walk way internal diameter, get stone process and can not omit rubble, can rubble be effectively avoided to be poured into back kidney by current, rubble can also be avoided to cause damage to ureter wall simultaneously, safe and reliable.
Description
Technical field
This utility model relates to medical instruments field, specifically, relates to the efficient extractor of a kind of urinary system calculus.
Background technology
Renal calculus is one of modal disease of Urology Surgery, and minimally-invasive treatment technology has replaced traditional open surgery becomes the most important treatment means of renal calculus.Minimally-invasive treatment basic goal removes calculus completely.Flexible ureteroscope enters kidney by human body natural's tract, and by Bladder stone crushed stone, definite effect is one of main minimally-invasive treatment means of kidney stone.In order to improve the clearance rate of calculus, after Bladder stone crushed stone, the normal calculus catching net-like means that adopts extracts larger rubble.
The calculus catching net-like means of current domestic and international application mostly is simple cover basket structure.As January 16 2013 Chinese patent ZL20122032508.7(day for announcing; Notification number: CN202665632U) disclosed a kind of calculus catching net-like means, for urology department endoscope is supporting, ureter and renal calculus are taken out, calculus catching net-like means core head is several to be had elastic wire and is coiled into, and in tension switch lock calculus catching net-like means core indentation outer tube, outer tube diameter is 0.5-3mm.But it is not high that this triangle calculus catching net-like means captures efficiency, the rubble of certain diameter size can only be captured, rubble is excessive cannot pass through operating walk way, rubble is too small easily to be omitted from steel wire gap, disposable crawl is too much, when tightening up inner core, basket is spherical in shape, and its diameter often exceedes operating walk way or ureter internal diameter and easily causes injury of ureter maybe cannot take out.For another March 7 2007 Chinese patent ZL200620040173.7(day for announcing; Notification number: CN2875338Y) the disclosed netted calculus catching net-like means of a kind of ureter, adopt nontoxic, filled nylon silk to make, after calculus being entangled, carry out rubble again.This calculus catching net-like means does not have the function extracting rubble, passively can only entangle calculus convenient operation, and initiatively not capture the function of rubble.
Summary draws, current calculus catching net-like means is got stone and is still had the following disadvantages: no matter be 1) triangle calculus catching net-like means or netted calculus catching net-like means, all have employed the design of centration pinching, spherical in shape after extracting stone, but not elliposoidal, the limited amount of cover stone, in the internal diameter of ureter lumen diameter or operating walk way, needs repeatedly to enter uriniferous tubule and gets stone, inefficiency; 2) calculus catching net-like means is collected between rear steel wire and be there is gap, and after especially netted calculus catching net-like means tightens up inner core, mesh easily omits rubble, and calculus catching net-like means itself can not stop calculus, finger stone and rubble under the perfusion of reverse current easily by refunds kidney; 3) corner angle of calculus can be exposed to outside the mesh of calculus catching net-like means, easily cause calculus catching net-like means by operating walk way, and very easily cannot scratch ureter wall, cause postoperative complication; 4) for clot or the pus block of kidney inner accumulated, apply calculus catching net-like means under soft lens and capture difficulty, inefficiency.
In sum, need badly a kind of get stone efficiency high, rubble can not be omitted, clot and pus block, the efficient extractor of safe and reliable urinary system calculus can be extracted simultaneously, but have not been reported about such device at present.
Summary of the invention
The purpose of this utility model is for deficiency of the prior art, provides a kind of urinary system calculus efficient extractor.
For achieving the above object, the technical scheme that this utility model is taked is:
The efficient extractor of a kind of urinary system calculus, be provided with conduit and seal wire, the far-end of described seal wire is provided with basket, and described basket is fixed with cover stone pocket, described cover stone pocket is moulded pocketed in advance and the one side of near-end is opening, and described cover stone pocket is also provided with micropore.
The described elongated pocketed of cover stone pocket, and distal surface is curved.
Described cover stone pocket is made up of plastics or non-woven fabrics.
Described basket is made up of the basket silk of shape curved under using state, and the far-end of described basket silk draws in towards the central axis direction of conduit and fixes with cover stone pocket.
The two bifurcated of described basket silk far-end is the first basket silk and the second basket silk, and described first basket silk and the second basket silk are fixed with cover stone pocket.
Described basket is made up of the basket silk of several ellipses, and each basket silk is arranged according to equilateral geometric figure, and the near-end of each basket silk crosses and is fused into the far-end that one is fixed on seal wire; Under using state, the face that each basket silk is formed is curved, and the central axis direction all towards conduit draws in.
Described basket silk has three or four, and each basket silk is according to triangle or square arrangement.
The proximal edge of described cover stone pocket is around being fixed on described basket on the section of far-end.
Described basket is ellipse annular, and it is perpendicular to the plane of seal wire is projected as annular.
Described basket silk is made up of shape-memory material.
Described micro-pore diameter is 50-150nm.
This utility model advantage is:
This utility model for urinary system calculus stop with efficiently take out problem, devise the disposable removal equipment of urinary system calculus with permeable micropore cover stone pocket structure:
1, be provided with strip pocketed and the cross sectional dimensions cover stone pocket suitable with operation path sheath internal diameter, can hold a large amount of rubble, even if fill calculus in the string bag, its profile also can not change, and still can pass through in sheath, substantially increase and get stone efficiency;
2, overlap on stone pocket not containing large-scale mesh, there is not gap, and itself there is certain moulding effect, therefore, it is possible to rubble, clot and pus block are omitted after effectively avoiding extracting rubble, outside simultaneously the corner angle of rubble can not be exposed to, and then can not frictionally damage ureter wall;
3, basket is designed with various ways, and three lines, four-wire type basket can adapt to the taking-up of calculus of different volumes, position, but also can better maintain the shape of cover stone pocket; Ellipse annular basket farthest can reduce the inhibition to rubble, is conducive to the inside that rubble enters into cover stone pocket smoothly;
4, basket silk is memory wire, and cover stone pocket is plastics or non-woven fabrics material thin film, all can be shrunk to very small size, be contained in conduit, be convenient to inserting of this utility model lithiasis extractor, can not promote calculus and to drive in the wrong direction back kidney, also not easy damaged ureter wall.
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation of the efficient extractor of urinary system calculus of the present utility model.
Accompanying drawing 2 is the enlarged drawings of A in Fig. 1.
Accompanying drawing 3 is structural representations of the basket silk of embodiment 2.
Accompanying drawing 4 is structural representations of the basket silk of embodiment 3.
Accompanying drawing 5 is structural representations of the basket silk of embodiment 4.
Detailed description of the invention
Below in conjunction with accompanying drawing, detailed description of the invention provided by the invention is elaborated.
The Reference numeral related in accompanying drawing and ingredient as follows:
1. conduit 2. seal wire
3. basket silk 31. first basket silk
32. second basket silks 4. overlap stone pocket
5. modular catheter 51. first screw thread
6. seal wire handle 61. second screw thread
7. basket 8. micropore
embodiment 1
Please refer to Fig. 1, Fig. 1 is the structural representation of the efficient extractor of urinary system calculus of the present utility model.The efficient extractor of described urinary system calculus is provided with conduit 1, seal wire 2, basket 7 and cover stone pocket 4.Described conduit 1 is cylindrical, hollow body, and the periphery of near-end is provided with modular catheter 5, and the inwall of described modular catheter 5 near-end is provided with the first screw thread 51.Described seal wire 2 is a fine filaments, through the inside of conduit 1.The near-end of seal wire 2 is provided with seal wire handle 6, and the outside of described seal wire handle 6 far-end is provided with the second screw thread 61.The second described screw thread 61 mates mutually with the first described screw thread 51, seal wire 2 and conduit 1 can be fixed after screwing.The far-end of described seal wire 2 is provided with basket 7.
Please refer to Fig. 2, Fig. 2 is the enlarged drawing of A in Fig. 1.Described basket 7 comprises three basket silks 3.Near-end and the seal wire 2(of every root basket silk 3 are not shown) fixing, the two bifurcated of distal section is the first basket silk 31 and the second basket silk 32.Under using state, the described curved shape of basket silk 3, the far-end of every root basket silk 3 all draws in towards the central axis direction of conduit 1.The pocketed of the described softened growth bar shaped of cover stone pocket 4, the outer surface of cover stone pocket 4 far-end is curved, and the one side of near-end is opening, and the first basket silk 31 of the outer wall of near-end and three basket silks 3 and the second basket silk 32 are fixed.Described cover stone pocket 4 is also provided with micropore 8.
It should be noted that:
The efficient extractor of urinary system calculus of the present utility model is under unused state, when also namely dispatching from the factory, described basket silk 3 and cover stone pocket 4 are all accommodated in the cavity of conduit 1 far-end, and basket silk 3 is gathered into a branch of under the restriction of conduit 1 cavity, and cover stone pocket 4 also fold is gathered into a branch of.
Described cover stone pocket 4 preferably uses plastic foil to make, and can be specifically the materials such as TPU, Pebax, FEP, ETFE, TPFE, it also can use the materials such as non-woven fabrics, as long as ensure that fold volume after folding is less, can be accommodated in thinner conduit 1.Described cover stone pocket 4 is by the pocketed of preformed growth bar shaped, and be similar to the shape of bullet, this shape can hold more rubble, significantly improves and gets stone efficiency.Quite, even if fill calculus in the string bag, its profile also can not change, and still can pass through in sheath for the diameter design one-tenth that cover stone pocket 4 transverse section is maximum and operation path sheath internal diameter.Due to cover stone pocket 4 not containing large-scale mesh, there is not gap, and itself there is certain moulding effect, therefore, it is possible to effectively avoid rubble, clot and pus block to omit, outside the corner angle of rubble can not be exposed to simultaneously, also would not frictionally damage ureter wall.Cover stone pocket 4 is provided with micropore 8, and described micropore 8 diameter is preferably 50-150nm, most preferably 100nm, can supply water smooth and easy passing through and rubble, clot and pus block all not by.
Described basket silk 3 is made for memory material, and as memory wire, concrete as Ti-Ni alloy material, after discharging in conduit 1 cavity, it can launch to revert to curve shape naturally.The effect of basket silk 3 is fixing and maintains the shape of cover stone pocket 4, ensures that its proximal edge is launched and try one's best to fit with ureter wall, can not be out of shape, also can not be out of shape when dragging calculus under the impact of current.The quantity of basket silk 3 is not limited only to the present embodiment, also can be three, four, five, seven, eight etc. some, as long as guarantee effective support set stone pocket 4 and its density degree can not hinder rubble to enter.The fixed form of described basket silk 3 and cover stone pocket 4 is also not limited only to the present embodiment, basket silk 3 also can be fixed on the inwall of cover stone pocket 4, the far-end of basket silk 3 also can not establish two bifurcation structures of the first basket silk 31 and the second basket silk 32, as long as guarantee with to overlap stone pocket 4 effectively fixing, but the basket silk 3 of two bifurcated adds and the fixed-area overlapping stone pocket 4, and fixed effect is better.
Basket silk 3 and cover stone pocket 4 can be accommodated in intracavity by described conduit 1, when inserting the efficient extractor of urinary system calculus of the present utility model, can get around calculus easily, not easily causing calculus to be shifted, also can not damage ureter wall.Described seal wire 2 is for manipulating storage and the release of basket silk 3 and cover stone pocket 4.Described modular catheter 5 and seal wire handle 6 are provided with the screw thread matched each other, and after the efficient extractor of urinary system calculus of the present utility model reaches target location, conduit 1 and seal wire 2 can be fixed, thus ensure basket silk 3 and overlap stone pocket 4 indeformable.
Herein, described " near-end " refers to one end that in operation process, distance patient is nearer, and described " far-end " refers to one end that in operation process, distance patient is far away.
The using method of the efficient extractor of urinary system calculus of the present utility model is as follows: during ureteroscope lithotrity, forms endoscopic working channel, inserts endoscope; Take the packaging of dispatching from the factory of the efficient extractor of urinary system calculus of the present utility model apart, the far-end of conduit 1 is entered into ureter by hand-held modular catheter 5 and seal wire handle 6, get around calculus and be placed on above calculus, distally promote seal wire handle 6, then screw thread screws seal wire handle 6 and modular catheter 5 with A/C 1 and seal wire 2, now basket silk 3 struts and reverts to curve-like, and cover stone pocket 4 is thereupon also softened; Carry out rubble operation, when calculus is all broken into the chip of about 2mm, slowly exit the efficient extractor of urinary system calculus of the present utility model on one side, while by endoscopic working channel to ureter sustained water injection, make calculus chip, clot, pus block pour in cover stone pocket 4, water then appears outside cover stone pocket 4 by micropore 8; Finally, calculus chip, clot, pus block are stored in cover stone pocket 4 and are removed.
The efficient extractor of urinary system calculus of the present utility model disposablely can extract a large amount of rubble, clot and pus block, be not subject to the restriction of ureter lumen diameter or operating walk way internal diameter, get stone formation to be not easy to omit rubble, rubble is effectively avoided to be poured into back kidney by current, rubble can also be avoided to cause damage to ureter wall simultaneously, safe and reliable.
The efficient extractor of urinary system calculus of the present utility model not only can be used for the shutoff of ureteral calculus and removes, the shutoff and the foreign body that also can be applicable to other body cavitys remove, include but not limited to following application: for renal calculus shutoff and remove, the shutoff of vascular thrombosis and removing, blood vessel puncture shutoff is stopped blooding, the shutoff of body cavity foreign body and the process removed as foreign body in trachea, intestinal.
embodiment 2
Please refer to Fig. 3, Fig. 3 is the structural representation of the basket silk of embodiment 2.Described basket 7 is three line style baskets, and particularly, basket 7 is made up of three oval basket silks 3, three basket silk 3 arrangements triangular in shape; Every root basket silk 3 all to cross with other two basket silks 3 fusion near half section of near-end, and the near-end of final three basket silks 3 crosses and is fused into the far-end that one is fixed on seal wire 2; Under using state, the face that every root basket silk 3 is formed is curved, all not shown towards conduit 1() central axis direction draw in; Described cover stone pocket 4(is not shown) proximal edge around being fixed on described basket 7 on the section of far-end.
embodiment 3
Please refer to Fig. 4, Fig. 4 is the structural representation of the basket silk of embodiment 3.Described basket 7 is four-wire type basket, and particularly, basket 7 is made up of four oval basket silks 3, and four basket silks 3 are in square arrangement; Every root basket silk 3 all to cross with adjacent two basket silks 3 fusion near half section of near-end, and the near-end of final four basket silks 3 crosses and is fused into the far-end that one is fixed on seal wire 2; Under using state, the face that every root basket silk 3 is formed is curved, all not shown towards conduit 1() central axis direction draw in.
It should be noted that, three lines of embodiment 2 and 3, four-wire type basket can adapt to the taking-up of calculus of different volumes, position, and the basket 7 of this kind of shape makes cover stone pocket 4 proximal edge all be in stationary state, so can better maintain the shape of cover stone pocket 4.In the present invention, basket 7 is not limited in embodiment 1-3 tri-kinds of shapes, can also make other shape, as long as guarantee effective support set stone pocket 4 and its density degree can not hinder rubble to enter.
embodiment 4
Please refer to Fig. 5, Fig. 5 is the structural representation of the basket silk of embodiment 4.Described basket 7 is substantially in ellipse annular, and the face formed is curved, and it is projected as annular in the plane perpendicular to seal wire 2.Particularly, described basket 7 is made up of an oval basket silk 3, and one end end points of its major axis is fixed on the far-end of seal wire 2.The proximal edge of described cover stone pocket 4 is around being fixed on basket 7.
In the present embodiment, described basket 7 only forms an ellipse annular by single basket silk 3, and the number of basket silk 3 minimizes, and farthest can reduce the inhibition to rubble, is conducive to rubble and enters into cover stone pocket 4 inside smoothly.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the inventive method; can also make some improvement and supplement, these improve and supplement and also should be considered as protection scope of the present invention.
Claims (10)
1. the efficient extractor of urinary system calculus, is provided with conduit and seal wire, it is characterized in that, the far-end of described seal wire is provided with basket, described basket is fixed with cover stone pocket, described cover stone pocket is moulded pocketed in advance and the one side of near-end is opening, and described cover stone pocket is also provided with micropore.
2. the efficient extractor of urinary system calculus according to claim 1, is characterized in that, the described elongated pocketed of cover stone pocket, and distal surface is curved.
3. the efficient extractor of urinary system calculus according to claim 1, is characterized in that, described cover stone pocket is made up of plastics or non-woven fabrics.
4. the efficient extractor of urinary system calculus according to claim 1, is characterized in that, described basket is made up of the basket silk of shape curved under using state, and the far-end of described basket silk draws in towards the central axis direction of conduit and fixes with cover stone pocket.
5. the efficient extractor of urinary system calculus according to claim 4, is characterized in that, the two bifurcated of described basket silk far-end is the first basket silk and the second basket silk, and described first basket silk and the second basket silk are fixed with cover stone pocket.
6. the efficient extractor of urinary system calculus according to claim 1, it is characterized in that, described basket is made up of the basket silk of several ellipses, and each basket silk is arranged according to equilateral geometric figure, and the near-end of each basket silk crosses and is fused into the far-end that one is fixed on seal wire; Under using state, the face that each basket silk is formed is curved, and the central axis direction all towards conduit draws in.
7. the efficient extractor of urinary system calculus according to claim 6, is characterized in that, described basket silk has three or four, and each basket silk is according to triangle or square arrangement.
8. the efficient extractor of urinary system calculus according to claim 7, is characterized in that, the proximal edge of described cover stone pocket is around being fixed on described basket on the section of far-end.
9. the efficient extractor of urinary system calculus according to claim 1, is characterized in that, described basket is ellipse annular, and it is perpendicular to the plane of seal wire is projected as annular.
10. the efficient extractor of urinary system calculus according to claim 1, is characterized in that, described basket silk is made up of shape-memory material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420388310.0U CN204192700U (en) | 2014-07-15 | 2014-07-15 | The efficient extractor of urinary system calculus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420388310.0U CN204192700U (en) | 2014-07-15 | 2014-07-15 | The efficient extractor of urinary system calculus |
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| CN204192700U true CN204192700U (en) | 2015-03-11 |
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| CN201420388310.0U Active CN204192700U (en) | 2014-07-15 | 2014-07-15 | The efficient extractor of urinary system calculus |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104095666A (en) * | 2014-07-15 | 2014-10-15 | 中国人民解放军第二军医大学 | Internal extracting device for calculus cavities of urinary systems |
| CN108542438A (en) * | 2018-05-10 | 2018-09-18 | 温州市人民医院 | One kind being used for Minimally Invasive Surgery clot processing unit |
-
2014
- 2014-07-15 CN CN201420388310.0U patent/CN204192700U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104095666A (en) * | 2014-07-15 | 2014-10-15 | 中国人民解放军第二军医大学 | Internal extracting device for calculus cavities of urinary systems |
| WO2016008293A1 (en) * | 2014-07-15 | 2016-01-21 | 中国人民解放军第二军医大学 | Urinary system stone intraluminal sleeving and removal apparatus |
| CN108542438A (en) * | 2018-05-10 | 2018-09-18 | 温州市人民医院 | One kind being used for Minimally Invasive Surgery clot processing unit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Sun Yinghao Inventor before: Sun Yinghao Inventor before: Peng Yonghan Inventor before: Gao Xiaofeng Inventor before: Xiao Liang Inventor before: Sheng Xia Inventor before: Li Ling Inventor before: Xu Bin |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: SUN YINGHAO PENG YONGHAN GAO XIAOFENG XIAO LIANG SHENG XIA LI LING XU BIN TO: SUN YINGHAO |
|
| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Minimally invasive best medical technology (Shanghai) Co., Ltd. Assignor: Army Medical Univ. No.2, Chinese PLA Contract record no.: 2017310000061 Denomination of utility model: Efficient extractor of urinary stones Granted publication date: 20150311 License type: Exclusive License Record date: 20171128 |