CN207707962U - A kind of closure mesh basket and the plugging device with the mesh basket - Google Patents

Abstract

The utility model provides a kind of closure mesh basket and the plugging device with the mesh basket, blocks mesh basket and is woven by more establishment silks, more establishment silks include polymer filament made of wire and high molecular polymer made of marmem；Either, more establishment silks include compound establishment silk, and compound establishment silk includes internal layer metal core made of marmem, and the polymeric jacket made of high molecular polymer being coated on outside metal core, wherein, marmem mainly plays skeletal support, sizing；High molecular polymer has better stability compared to marmem under laser.By polymer material and marmem Co-knit, closure mesh basket memory resilience provided by the utility model is preferable, and has better stability under laser.

Description

A kind of closure mesh basket and the plugging device with the mesh basket

Technical field

The utility model is related to the field of medical instrument technology, specifically, being a kind of closure mesh basket and with the mesh basket Plugging device.

Background technology

Ureteral calculi is one of common disease of Urology Surgery.The primary treatments of ureteral calculi include now：Body Combined use of ESWL lithotrity (ESWL), ureterolithotomy and ureteroscope lithotrity etc..Ureteroscope lithotrity is to utilize The thin mirror of one diameter 3mm or so is inserted into ureter by urethra, bladder, ureteral calculi or kidney stone is smashed taking-up. It does not do any notch physically, is that a kind of pure Urology Surgery hysteroscope is micro- using the natural urinary system cavity of human body Invasive procedures.The various ureteral calculis and part kidney stone invalid suitable for expectant treatment.With ureterolithotomy phase Than ureteroscope lithotrity has many advantages, such as that damage is small, painful gently, restores fast；Compared with extracorporeal shock-wave lithotripsy, treatment The course of disease is shorter, high efficiency.There is also certain deficiencies for ureteroscope rubble stone-extraction operation at present, for example, in ureter, epimere calculus And stone debris is easy to be poured the recoil strength refunds renal plevis of flow or rock breaking tool or enters kidney calices, and cause kidney stone, Increase operating difficulty.Blockaded above ureteral calculi by tool is to prevent ureteral calculi from being recoiled back the important hand of kidney Section, clinically there are also ureter closure devices at present, however there are still one in actual use for these ureter plugging devices Fixed disadvantage.

COOK companies of the U.S. have manufactured a kind of N-Trap sets stone indigo plant, are the bowl structures made of metal wire knitted, with Preventing calculus clast from drifting about into kidney to play in bowl-shape across calculus rear distraction.But the set stone indigo plant volume is larger, no Convenient for placing, it is also possible to that calculus is pushed to make its displacement in placement process；In addition to disadvantages mentioned above, applicant also sends out under study for action Existing, which is easy to be interrupted by laser during laser lithotripsy, so that mesh basket is occurred damaged, there are the risks that calculus is slipped through the net； And in the case where needs drag and take shifting stone, the section of mesh basket wire is easy to scratch ureter tube wall, and severe patient causes concurrently Disease.

The BostonScientific companies in the U.S. have also manufactured a kind of Stone Cone stone extraction baskets, are by wire It is reversed into the mosquito-repellent incense dish structure of a taper, applicant has found that it equally exists the problem of being easy by laser burns under study for action, Mesh basket becomes fragile after by calcination, is easily broken off, and can not realize effective closure, there are great risks.

A kind of plugging device that can be used in ureter stone operation, the closure of the device are also disclosed in first product Object enter body cavity when, before non-tension and compression, can with membranaceous, strip, band-like, sheet, tubulose, sleeve-like or other do not advise Flat pattern expansion then, but can form foldable structure by drawing in its axial direction.Pass through one in its axial direction Seal wire is pulled, and plug is axially compressed, and plug length shortens, and width broadens, and forms plugging structure, the closure of expansion Object can form bolt shape plug through folding, distortion, spiral or other modes, realize effective block.But the plug exists Volume under flat pattern is also larger, is not easy to place, and equally exists the possibility for pushing calculus that it is made to shift in placement process, The plug thoroughly can hinder fluid to flow, it is difficult to be pulled in ureter.

Therefore it provides a kind of stable structure, convenient for the block mesh basket and plugging device with the mesh basket of placement becoming this Medical field technical problem urgently to be resolved hurrily.

Utility model content

The technical problem to be solved by the present invention is to provide a kind of stable structure, convenient for placement closure mesh basket and have The plugging device of the mesh basket.

In order to solve the above technical problems, the utility model provides a kind of closure mesh basket, which is worked out by more Silk weaves, and more establishment silks include the wire made of marmem and polymerize made of high molecular polymer Object silk；Either, more establishment silks include compound establishment silk, and compound establishment silk includes that internal layer is golden made of marmem Belong to core, and the polymeric jacket made of high molecular polymer being coated on outside metal core.

Further, marmem is NiTi system marmem.

Further, high molecular polymer is selected from fluoropolymer, polyurethane, nylon elastomer, polyethylene or polypropylene In one kind.

Further, fluoropolymer is polytetrafluoroethylene (PTFE).

Further, more establishment silks include the wire made of marmem and are made of high molecular polymer Polymer filament.

Further, wire and the radical of polymer filament ratio are 1-49：51-99.

Further, establishment silk is compound establishment silk, and compound establishment silk includes that internal layer is golden made of marmem Belong to core, and the polymeric jacket made of high molecular polymer being coated on outside metal core.

Further, the thickness of polymeric jacket is 0.01mm-2mm.

Further, the utility model additionally provides a kind of plugging device, including outer tube and plug members, plug members packet Flexible soft head, mandrel, handle and any of the above-described kind of closure mesh basket are included, mandrel is arranged in outer tube, and the non-intrusive end of mandrel connects The insertion end of handle, mandrel coats flexible soft head, blocks on the mandrel that mesh basket is connected between flexible soft head and handle, handle Mesh basket stretching or retraction outer tube are blocked for controlling.

In conclusion closure mesh basket provided by the utility model is by marmem and high molecular polymer Co-knit It forms.Wherein, shape memory alloy material mainly plays skeletal support, sizing；Macromolecule polymer material is compared to shape Shape memory alloys material has better stability under laser.Therefore, the utility model closure mesh basket memory resilience compared with It is good, and there is better stability under laser.

Description of the drawings

Utility model will be further described in detail below with reference to the attached drawings and specific embodiments：

Figure 1A is a kind of mesh basket braiding structure schematic diagram provided by the utility model；

Figure 1B is another mesh basket braiding structure schematic diagram provided by the utility model；

Fig. 2 is the diagrammatic cross-section of compound establishment silk provided by the utility model；

Fig. 3 is the separation schematic diagram of plugging device provided by the utility model；

Fig. 4 is a kind of bonding state perspective diagram of plugging device provided by the utility model；

Fig. 5 is another bonding state perspective diagram of plugging device provided by the utility model.

Element numbers are as follows：

100- outer tubes

200- plug members

210- blocks mesh basket

211- wires

212- polymer filaments

213- metal cores

214- polymeric jackets

220- mandrels

230- handles

The flexible soft heads of 240-

Specific implementation mode

Presently in connection with attached drawing, the better embodiment of the utility model is discussed in detail.Although the description of the utility model will It is introduced together in conjunction with each embodiment, but this feature for not representing this utility model is only limitted to the several embodiments.Just Just on the contrary, the purpose for making utility model introduction in conjunction with embodiment is that have to cover based on the claim of the utility model The other selections or transformation that may extend.To include to be permitted in order to provide the depth understanding to the utility model, in being described below More concrete details.The utility model can not also be implemented using these details.In addition, in order to avoid this chaotic or fuzzy practicality Novel emphasis, some details will be omitted in the de-scription.

In addition, "upper", "lower", "left", "right", "top", "bottom" used in the following description, are in order to preferably It describes the better embodiment of the utility model and sets, should not be construed as a limitation of the present invention.

" insertion end " in the utility model refer in a state of use, it is farthest apart from chamber inlet position and operator One end, the corresponding other end near chamber inlet position and operator are non-intrusive end.

The utility model provides a kind of closure mesh basket 210, which is woven by more establishment silks, more establishment silks Including wire 211 and polymer filament 212 made of high molecular polymer made of marmem；Either, more It includes compound establishment silk that root, which works out silk, and compound establishment silk includes internal layer metal core 213 made of marmem, and cladding Polymeric jacket 214 made of high molecular polymer outside metal core 213.Wherein, marmem mainly plays skeleton branch Support, the effect shaped make entirely to block mesh basket 210 with preferable memory resilience；High molecular polymer is remembered compared to shape Recall alloy has better stability under laser, and after adding high molecular polymer, block mesh basket 210 has under laser Better stability.Further, the marmem in the utility model refers to deforming when by outer force effect, It can restore the alloy of its original-shape again after external force disappearance.Common marmem has the conjunction of NiTi system shape memory Gold, cupro-nickel system marmem, copper aluminium system marmem, copper zinc system marmem, iron system marmem (Fe-Mn-Si, Fe-Pd) etc..In marmem above-mentioned, NiTi system marmem possess preferably elasticity and Remember resilience, NiTi system marmem is preferably used in the utility model.

Further, closure mesh basket provided by the utility model is not particularly limited the composition of high molecular polymer, As long as disclosure satisfy that the use of stone extraction basket needs, can also may be used selected from one kind in the polyolefin such as polyethylene, polypropylene To be selected from polyvinyl chloride, polyester (PET, PBT etc.), polyamide, polyimides, polyurethane, polystyrene, makrolon, organic One kind of the composite material of silicones, fluoropolymer (PTFE, ETFE, PFA etc.) or these materials, is also selected from latex One kind in the various rubber materials such as rubber, silicone rubber, nylon elastomer.

Further, to make closure mesh basket 210 have better stability under laser, high molecular polymer is preferably self-contained One kind in fluoropolymer, polyurethane, nylon elastomer, polyethylene or polypropylene, wherein fluoropolymer, polyurethane or Buddhist nun Imperial elastomer is owned by preferable biocompatibility, thus the closure mesh basket 210 and cavity prepared using aforementioned three kinds of polymer Compatibility it is preferable, and be not susceptible to breakage.

Further, fluoropolymer is preferably polytetrafluoroethylene (PTFE).Compared to other macromolecule polymer materials, poly- four Stability of the vinyl fluoride under laser is preferable, and frictional force is small, good with the smoothness of body cavities, it is possible to reduce blocks mesh basket To the damage of cavity in 210 moving process.

Preferably, more establishment silks include the wire 211 made of marmem and by high molecular polymer system At polymer filament 212, mesh basket weaves by wire 211 and polymer filament 212.It is compiled in a kind of mesh basket as shown in Figure 1A It knits in structure, wire 211 and polymer filament 212 can be woven respectively as independent organization unit, if mesh basket Breakage occurs under laser action for the wire 211 at one, and the polymer filament 212 of remainder can also play certain closure The effect of rubble.It is few using the marmem of this preparation method and the whole dosage of high molecular polymer, block mesh basket 210 totle drilling cost is relatively low.

Preferably, in another mesh basket braiding structure as shown in Figure 1B, wire 211 and polymer filament 212 can also Tangle either side by side by way of woven collectively as an organization unit, if blocking 210 certain of mesh basket Wire 211 is struck off by laser and breakage occurs, and remaining polymer filament 212 can also play the work for blocking rubble well With the closure function of mesh basket is hardly affected.

The method worked out jointly by wire 211 and polymer filament 212 using above two can be pre-machined a large amount of Wire 211 and polymer filament 212 can be adjusted by adjusting the quantity of wire during braiding 211 and polymer filament 212 Save marmem and high molecular polymer dosage.

Further, in the utility model, the dosage of wire 211 and polymer filament 212 is not particularly limited.With The reduction of 212 dosage of polymer filament, the count of polymer filament 212 declines on mesh basket, and wire 211 occurs under laser When broken, the grid of mesh basket becomes larger, and the size for the minimum rubble that mesh basket can block increases；When the dosage of polymer filament 212 increases When, the establishment density of wire 211 reduces, and stability of the mesh basket under laser is preferable, but the note of mesh basket after deformation in this way Recall resilience can decrease, can need to adjust metal according to elastic to the stability of mesh basket and memory in actual use The amount ratio of silk 211 and polymer filament 212.From take into account stability of the mesh basket under laser and memory resilience two from the aspect of, Preferably, the radical ratio 1-49 of wire 211 and polymer filament 212 during mesh basket weaves：51-99, in the range net The stability of basket is greatly improved, and it is suitable with pure Metal net basket to remember resilience.Wire 211 and polymer filament 212 ratio is more preferably 1-10：90-99.

Further, more establishment silks include compound establishment silk, as shown in Fig. 2, compound establishment silk includes internal layer by shape Metal core 213 made of memorial alloy, and polymeric jacket 214 made of high molecular polymer that are coated on outside metal core 213. The mesh basket prepared using the compound establishment silk that this high molecular polymer wrapped shapes memorial alloy obtains, the stabilization under laser Time is suitable with the mesh basket of straight polymer material preparation, even if metal core 213 is broken, due to the cladding of outer layer copolymer, The metal material of fracture will not be scattered in cavity, and the section of metal will not scratch cavity；And prepared by compound establishment silk The memory resilience of mesh basket is suitable with closure mesh basket prepared by pure memorial alloy, can fully be blocked to cavity.More into One step, wire 211 and/or polymer filament 212 can also be added with convenient in the mesh basket for using compound establishment silk to weave The amount ratio of ground adjustable shape memorial alloy and high molecular polymer.

Further, the utility model does not have special limit for the diameter of metal core 213 and the thickness of polymeric jacket 214 It is fixed, it is preferable that the thickness of polymeric jacket 214 is 0.01mm-2mm.

Further, mesh basket can be single layer mesh basket or multilayer mesh basket, wherein each layer of mesh basket is all by high molecular polymerization What object and marmem were collectively formed.The common structure in this field, such as column may be used for the overall structure of mesh basket It is or discoid, it is preferable that mesh basket is column structure shown in Fig. 3.

Further, the utility model is not particularly limited for working out the shape of silk, can be round, ellipse or It is the column structure of hexagon, can also be the structure of sheet.

Further, the utility model additionally provides a kind of plugging device, and for the ease of observation, the envelope is provided in Fig. 3 The separation schematic diagram of block apparatus comprising outer tube 100 and plug members 200, plug members 200 include flexible soft head 240, mandrel 220, handle 230 and any of the above-described kind of closure mesh basket 210, mandrel 220 are arranged in outer tube 100, and the non-intrusive end of mandrel 220 connects Connecting handle 230, the insertion end of mandrel 220 are coated with the soft head 240 of flexibility formed by polymer material, block mesh basket 210 and be arranged On mandrel 220, block on the mandrel 220 that mesh basket 210 is fixed between flexible soft head 240 and handle 230, it is preferable that block Mesh basket 210 is arranged close to flexible soft head 240.Handle 230 is for controlling mesh basket stretching or retraction outer tube 100.

Further, as shown in figure 4, before the use, outer tube 100 and plug members 200 are combined, wherein blocking Mesh basket 210 is outside outer tube 100.As shown in figure 5, in use, outer tube is pulled by mesh basket 210 is blocked by handle 230 In 100, mesh basket is compressed in outer tube 100, and the diameter of mesh basket becomes smaller, and length increases, then in the presence of endoscope, by the envelope Block apparatus passes through calculus to be placed to the distal end of calculus, then controlled by handle 230 block mesh basket 210 relative to outer tube 100 to Calculus rear is stretched out so that is blocked mesh basket 210 and is restored to original-shape as shown in Figure 4, to form sufficient envelope to cavity wall It is stifled.After the completion of laser lithotripsy is with stone process is taken, closure mesh basket 210 can be controlled by handle 230 and be returned in outer tube 100, with Afterwards, entire plugging device is taken out.

Further, mesh basket only one end is fixed on mandrel 220, is connected with flexible soft head 240, the other end of mesh basket can It being slided up and down along mandrel 220, one end of mandrel 220 has position-limit mechanism, prevents mesh basket from being compressed by excess load in outer tube 100, Influence memory resilience.Further, mandrel 220 be metal core axle, it is preferable that be stainless steel wire or nitinol alloy wire, but The utility model is not limited thereto, and mandrel 220 can also be any filamentous structure, and filamentary structure, which can also be selected, appoints What metal or non-metallic material, as long as the basic function of plug members 200 can be realized.

Further, outer tube 100 can be single or multi-layer structure, preferably multilayered structure, for example, using PEEK or Buddhist nun Imperial elastomer forms outer layer and avoids stabbing inner wall, both materials are steady for providing the compatibility between outer tube 100 and cavity Qualitative good, change of properties very little, low temperature is non-sclerous, and corrosion-resistant and ageing-resistant ability is strong, even if when long with this manufactured outer tube 100 Between place, structure will not change.Middle layer uses metal knitted or spring enhancing structure, ensures the insertion of outer tube 100 Property and radial dilatation.Inner tube uses fluorine material or high-density polyethylene material, for reducing outer tube 100 and plug members Frictional force between 200, convenient for placing plug members 200.

In conclusion closure mesh basket provided by the utility model is woven by more establishment silks, the group of more establishment silks At the closure and removal that including marmem and high molecular polymer, can be used for lithangiuria in urinary system.It blocks Mesh basket is formed by marmem and high molecular polymer Co-knit, wherein marmem mainly rise skeletal support, The effect of sizing；High molecular polymer has better stability compared to marmem under laser.Pass through polymer Material and shape memorial alloy Co-knit makes the closure mesh basket of the utility model have and preferably remembers resilience, and There is better stability under laser.

Above-mentioned explanation is the embodiment of specific implementation mode in the utility model, for being illustrated more clearly that this practicality is new The utility model of type is conceived, but it is not the restriction for the right to the utility model.It is new according to this practicality The utility model of type is conceived, and those skilled in the art can be easy variants and modifications the above embodiments, these belong to this practicality Variants and modifications in novel utility model design are all contained within the scope of the utility model appended claims.

Claims (9)

1. a kind of closure mesh basket, which is characterized in that the closure mesh basket is woven by more establishment silks,

The more establishments silk includes wire and the polymer made of high molecular polymer made of marmem Silk；

Either, the more establishments silk includes compound establishment silk, and the compound establishment silk includes internal layer by marmem Manufactured metal core, and the polymeric jacket made of the high molecular polymer that is coated on outside the metal core.

2. blocking mesh basket as described in claim 1, which is characterized in that the marmem is that NiTi system shape memory closes Gold.

3. blocking mesh basket as described in claim 1, which is characterized in that the high molecular polymer is selected from fluoropolymer, gathers One kind in urethane, nylon elastomer, polypropylene or polyethylene.

4. blocking mesh basket as claimed in claim 3, which is characterized in that the fluoropolymer is polytetrafluoroethylene (PTFE).

5. blocking mesh basket as described in claim 1, which is characterized in that the more establishments silk includes being closed by the shape memory Wire made of gold and the polymer filament made of the high molecular polymer.

6. blocking mesh basket as claimed in claim 5, which is characterized in that the wire and the radical of polymer filament ratio are 1-49：51-99.

7. blocking mesh basket as described in claim 1, which is characterized in that the more establishments silk includes compound establishment silk, described Compound establishment silk includes internal layer metal core made of the marmem, and be coated on outside the metal core by described Polymeric jacket made of high molecular polymer.

8. blocking mesh basket as claimed in claim 7, which is characterized in that the thickness of the polymeric jacket is 0.01mm-2mm.

9. a kind of plugging device, which is characterized in that including outer tube and plug members, the plug members include flexible soft head, core Closure mesh basket described in any one of axis, handle and claim 1-8, the mandrel are arranged in the outer tube, the mandrel Non-intrusive end connect the handle, the insertion end of the mandrel is coated with the soft head of flexibility, and the closure mesh basket is connected to On the mandrel between the soft head of flexibility and the handle, the handle is for controlling the closure mesh basket stretching or retracting The outer tube.