CN201558399U - Compact coelom stopper - Google Patents

Abstract

The utility model discloses a compact coelom stopper comprising a guide wire, a guide pipe and a stopping object which can be compressed axially, wherein the stopping object is formed by more than two flat film sheets; hydrophilic coatings are coated on the surfaces of the flat film sheets to enable each flat film sheet to stick mutually in a flat shape; at least one pipe cavity which can pass through the guide wire is arranged on the axial direction of the flat film sheets; the far ends of the flat film sheets are fixed with the guide wire to draw the near end of the guide wire; after spread stopping object is axially compressed, a pin-shaped stopping object is formed on the radial direction. The utility model has the advantages of cabinet structure and simple operation. Corresponding to a stopper with a single film structure, the stopping of the compact coelom stopper is more sufficient, and barriers can be effectively prevented to fall off from a gap of the compact coelom stopper.

Description

A kind of body cavity stopper of compactness

Technical field:

This utility model relates to a kind of medical device that is used for the shutoff of body cavity barrier, relates in particular to a kind of body cavity blocking device that is used for the fixing of body cavity barrier and removes.

Background technology:

Ureteral calculus is the Urology Surgery commonly encountered diseases, and 90% above ureteral calculus is to form in kidney and fall into ureter.After Goodnm in 1977 etc. at first report ureteroscope (URL) are applied to rubble, but since its have damage little, recover fast repeatable operation, clear stone efficient advantages of higher, URL has become the operation method commonly used of treatment ureteral calculus at present.URL's mainly is under television monitoring ureteroscope to be pushed into ureter, after seeing calculus, if calculus is bigger, need to adopt the rubble apparatus carry out rubble, the rubble apparatus comprises liquid electricity, ultrasonic, air pressure trajectory (PL), electronic kinetic energy (EKL) and laser (LL) etc.Mode with irrigation during rubble keeps getting a clear view.Though the URL Therapeutic Method has plurality of advantages, but also there is deficiency in it, because block top dilatation of ureter and dabbling flushing action, fragment, the nearly renal pelvis of ureter epimere place calculus very easily enter renal pelvis and renal calices in the rubble process, cause residual stone formation in rubble failure or the kidney.

For reduce URL when operation calculus on move, often carry out rubble and get stone at present in conjunction with calculus catching net-like means.The operation principle of calculus catching net-like means is as follows: calculus catching net-like means can pass calculus, opening basket catches calculus, receive net then, calculus is fixed,, then calculus is directly pulled out if calculus is less, if calculus is bigger, adopt the rubble apparatus that it is smashed, then splinter of stone is partly or entirely taken out one by one with calculus catching net-like means, or wait for that rubble excretes voluntarily.Though calculus catching net-like means can partly solve calculus and fix and get problems such as stone, calculus catching net-like means generally once can only be caught a calculus, and it is long repeatedly to get the stone operating time; Calculus catching net-like means is a network structure, and its mesh diameter generally more than 1mm, is slipped through the net less than the calculus of mesh diameter for size easily; In the calculus formula of handling incarceration, get stone with stone basket blindly, may cause ureter perforation; Excessive calculus is pulled out by force and may be caused ureter to tear with basket cover stone; The tinsel of basket may be interrupted by laser.

Domestic number of patent application CN200810101819 discloses a kind of urinary system stone taking device, form by the pipe that medical macromolecular materials are made, the two ends of pipe rightabout each other bend to the circle shape inwardly, shape such as pigtail, bend on the two ends tube wall of circle shape 3-5 side opening arranged, diameter is 0.1-0.8mm, and the corbeil that the stage casing of pipe has 10-20 beading to expand is that wall is first-class around pipe to be opened four opennings and make.There is the tubal bladder gauge point lower end of pipe, and there is the kidney gauge point upper end of pipe, and the top of pipe is gradually thin tapered tubular; Because its special beading can expand contractile corbeil, has improved the success rate of getting stone greatly than existing single calculus catching net-like means, the phenomenon that comes off again after calculus is entangled can not occur; Omnidistance beading structure plays good supporting role to ureter, and ureter can not blocked by calculus, and urine can reach bladder smoothly in the kidney.But this apparatus cover stone is still very loaded down with trivial details, calculus need be entangled one by one, in the time of can not stoping rubble fully calculus on move.

The applicant is in " method and the plugging device thereof of barrier in a kind of shutoff body cavity " of application on April 14th, 2009, application number is 200910057068.2, this plugging device is by seal wire, conduit, flat softish membranaceous plug, one end of seal wire passes conduit and plug cavity, plug far-end and seal wire are fixed, tractive seal wire near-end, unfolded plug are formed bolt shape plug by axial compression.Ureteral calculus can prevent from when carrying out rubble to move on the rubble under the shutoff of this stopper, after rubble finishes, utilizes the shutoff function of stopper, the polylith rubble can be dragged simultaneously to bladder or ureter sheath, has significantly reduced and has got the stone time.But this plug is a monolithic thin film, the material softness, formed stopper space, the compressed folding back of monolithic membrane is big, after it carries out shutoff to calculus, when smashing stone with the rubble apparatus, rubble might pass from the space under the impact of the perfusion of water and energy, causes the inadequate phenomenon of shutoff; Secondly, monolithic membrane is because the space is big, and material is soft, and when dragging bigger rubble, the shutoff power of stopper is little, and rubble can be escaped between stopper and ureter wall, causes to drag failure.

The utility model content:

The purpose of this utility model is to be that " method and the plugging device thereof of barrier in a kind of shutoff body cavity " patent of 200910057068.2 is improved to the application number that the applicant has applied for, a kind of body cavity stopper of compactness is provided, this utility model is by being provided with a kind of body cavity plugging device that is made of the multi-disc film to the thrombosis in the body cavity, barriers such as calculus carry out shutoff to be fixed, can it be removed out body cavity according to concrete needs then, structure is small and exquisite, simple to operate, stopper with respect to the monolithic membrane formation, its shutoff is more abundant, can prevent effectively that barrier from escaping from the space of stopper, as effectively prevent ureteral calculus on move, rubble can not escaped when dragging rubble.

In order to solve the problems of the technologies described above, the technical solution of the utility model is as follows:

A kind of body cavity stopper of compactness, comprise a seal wire, a conduit, can be by the plug of axial compression, described plug is made of the flat membrane more than two, described membrane surface scribbles hydrophilic coating and makes each diaphragm bonding flat that is mutually, on the diaphragm axial direction, be provided with the tube chamber that at least one can pass seal wire, diaphragm-operated far-end and seal wire are fixed, and tractive seal wire near-end, unfolded plug are forming the bolt shape plug be circumferential distribution after by axial compression in the radial direction.This plug is not advancing in body cavity with flat form before the expansion, to its seal wire near-end impose tractive, plug form in the radial direction be 360 ° circumferentially distribute diaphragm, continue the tractive plug, the plugging structure of the compactness that collapsible formation is suitable.

Further, described diaphragm is three to eight.

Further, described diaphragm is four or six.

Further, described diaphragm is thin film or fabric or non-woven fabrics or their complex.

Further, described hydrophilic coating is a kind of in polyvinylpyrrolidone, polyethylene glycol oxide, Polyethylene Glycol, polypropylene glycol, polyacrylamide, the polyacrylic acid or their complex.

Further, described hydrophilic coating is a polyvinylpyrrolidone

Further, described plug near-end and conduit are fixed.

Further, described plug partially or completely is exposed to outside the conduit before tractive seal wire near-end not.

Further, described plug far-end is provided with guide's end, and described guide's end is the outer coating one layer of polymeric chuck of the seal wire that prolongs.

The plug of shutoff apparatus provided by the utility model is before axial compression not, hydrophilic coating will be bonded together between each diaphragm, so the superimposed back of a plurality of diaphragms is as the monolithic diaphragm, just thickness is superposeed, and plug advances in body cavity with flat monolithic patching like this; When it is imposed tractive, stressed disengaging tacky state between each diaphragm, plug is forming a plurality of diaphragms that are 360 ° of distributions in the radial direction like this; Continue the tractive plug, the plugging structure of the compactness that the collapsible formation of each diaphragm is suitable.Because this utility model plug is to be made of the multi-disc diaphragm, with respect to monolithic membrane, the bolt shape stopper structure of formation is compact more, and the space is little, and shutoff is more abundant, and barrier is not easy to escape when dragging except that barrier.

The creationary multi-disc diaphragm of having introduced of shutoff apparatus provided by the utility model, consider the difficulty that the multi-disc diaphragm exists simultaneously when entering body cavity, utilize hydrophilic coating to give the multi-disc diaphragm bonding, have with monolithic membrane the same compliance and guidance function when in body cavity, advancing like this, can pass barrier like a cork, when it carries out shutoff fixedly the time to barrier, it is big then to have overcome monolithic membrane plugging device space, the shortcoming that shutoff power is little, the multi-disc film is subjected to the formed bolt shape of tractive axial compression plug compact conformation, almost there is not the space, can fill up whole body cavity, the hardness of formed bolt shape plug wants much hard with respect to the formed bolt shape of monolithic membrane plug, so its shutoff power also is higher than the formed stopper of monolithic membrane, can not take place that barrier is escaped or the inadequate phenomenon of shutoff.

This utility model device can be applied to the shutoff of renal calculus and remove, also can be applicable to the temporary shutoff of other a plurality of body cavitys, include but not limited to following application: can be used for the shutoff of ureteral calculus and remove, the shutoff of vascular thrombosis and removing, the shutoff hemostasis of vascular puncture hole, the shutoff of body cavity foreign body and remove as trachea the processing of the foreign body in the intestinal.This utility model plugging device also can be used for the permanent shutoff of body cavity, especially for body cavity direction of flow or flow-control, as occasions such as blood vessel, ventricle, fallopian tube.Body cavity method for blocking of the present utility model and device are particularly suitable for the shutoff of lithangiuria, fixing and removing, with respect to calculus catching net-like means of the prior art, the operation doctor does not need too many skill, shutoff and to remove calculus simple, clear during rubble in the TV downward view, once can remove a plurality of fragments when removing rubble, when removing fragment, fragment is not easy to escape, and operation wound is little or do not have a wound, simple structure.

Plug is not by before the axial compression, has less thickness, be flat, the material softness when passing body cavity, can be complied with the body cavity shape, so at body cavity bypass, inlet, propelling resistance is little in the body cavitys such as sphincter, especially when it runs into the body cavity barrier, can pass through over from the gap of body cavity and barrier.The example of concrete penetrate thing is as passing ureteral calculus, renal calculus, thrombosis, cholelithiasis or other calculus etc.In case flat plug passes barrier, tractive seal wire near-end, the diaphragm-operated coating of plug is torn, formation is a plurality of diaphragms of 360 ° of distributions, continue tractive, can form relatively hard very compact bolt shape plug, directly dilatory bolt shape plug, barrier can be dragged to suitable position, realize the removing of barrier.Except above-mentioned application, can also be applied to other occasions, comprise the shutoff object, as calculus is carried out shutoff, it is fixed, to make things convenient for rubble; Thrombosis is carried out shutoff, conveniently carry out operation on vessels of heart; Shutoff is carried out in the vascular puncture hole reached effects such as hemostatic purpose.This utility model is specially adapted to the shutoff urinary system calculus, as treatment during ureteral calculus in conjunction with endoscope, little calculus directly is dragged to bladder or ureter sheath from ureter, bigger calculus is carried out shutoff with plug and is fixed, prevent to move on the calculus, after the traditional rubble apparatus of reuse smashes, be dragged to bladder and ureter sheath again.When treatment renal calculus, in conjunction with percutaneous nephrolithotomy, can be used for the shutoff of calculus, fixing and hauling-out.

Description of drawings:

Fig. 1 is the sketch map of calculus in ureter.

Fig. 2 A is that plug is not pulled sketch map before in this utility model.

Fig. 2 B is that plug forms 4 diaphragm-operated sketch maps that are 360 ° of distributions in this utility model.

Fig. 2 C is the sketch map that plug is formed bolt shape plug in this utility model by axial compression.

Fig. 3 A is that plug is not compressed the first shape sketch map before in this utility model.

Fig. 3 B is that plug is not compressed the second shape sketch map before in this utility model.

Fig. 3 C is that plug is not compressed the 3rd shape sketch map before in this utility model.

Fig. 4 A is that diaphragm sheet number is 4, and diaphragm is the sketch map of the plug of circumferential distribution.

Fig. 4 B is that diaphragm sheet number is 6, and diaphragm is the sketch map of the plug of circumferential distribution.

As Fig. 5 A-5C is the whole process sketch map that plugging device carries out shutoff and removes ureteral calculus.

The drawing reference numeral explanation:

10-plugging device 12-plug 14-conduit 16-guide end

18-seal wire 20-seal wire tractive end 22-diaphragm

The specific embodiment:

Now this utility model is described further in conjunction with the specific embodiment and description of drawings;

This utility model device is inserted in the body cavity by interventional technique, and body cavity is carried out shutoff.Generally speaking, this plugging device is used for moving and removing of body cavity barrier, also can be used for the fixing of barrier, particularly to barrier carry out shutoff fixing after, carry out fragmentation again; Also can be used for effects such as vascular puncture hole hemostasis.Below only describe this plugging device and be used for the ureteral calculus removing, but this utility model can have wideer application under the situation that meets the plugging device operation principle, this is that industry technical staff is conspicuous, as mentioned above, can be used for the hemostasis of vascular puncture hole, the blood vessel thrombosis is carried out shutoff etc.

In the ureter of calculus between bladder and kidney, Fig. 1 is its sketch map, and plugging device 10 enters bladder with the technology of traditional intervention bladder, and the technology of traditional intervention bladder is not done description at this.After device enters bladder, need to enter into ureter again by ureteric orifice.

Concrete structure of plugging device such as Fig. 2 A, plugging device 10 contains flat plug 12, plug 12 is made up of 4 diaphragms 22, and conduit 14, guide hold 16, seal wire 18, seal wire tractive end 20.Diaphragm 22 surfaces scribble hydrophilic coating, and hydrophilic coating bonds together diaphragm, and stick into flat, as the monolithic diaphragm.When conduit 14 advanced, flat plug 12 and guide held 16 with respect to conduit 14 maintenance resting states.When guaranteeing that whole device advances, unfolded plug 12 and guide hold 16 with respect to conduit 12 maintenance resting states, can use external force or fixture that seal wire 18 is not slided in conduit 14, after conduit 14 puts in place, tractive seal wire 18, hydrophilic coating is torn, and 4 diaphragms 22 spread out, and forms 4 diaphragms that are 360 ° of distributions, shown in Fig. 2 B, continue tractive seal wire 18, plug 12 is compressed into bolt shape plug, shown in Fig. 2 C.

In this utility model, the method that plugging device 10 is inserted tube chamber has a variety of.As earlier conduit 14 being inserted tube chamber, the seal wire 18 that will be connected with plug 12 then inserts conduits 14 and stretches out from conduit 14 far-ends, tractive plugging device 10 near-end seal wire tractive ends 20, and plug 12 is by the barrier effect of conduit 14, diaphragm 22 is spread out, be compressed into the bolt shape then; Also the seal wire 18 that is connected with plug 12 can be inserted in the body cavity earlier, and then insert conduit 14 along seal wire 18, after conduit 14 puts in place, the seal wire tractive end 20 of tractive catheter proximal end, diaphragm 22 spreads out, and is compressed into the bolt shape then; Also conduit 14 and the seal wire 18 that is connected with plug 12 can be inserted body cavity simultaneously, after putting in place, the tractive seal wire is realized the shutoff function, and this moment, unfolded plug 12 can be positioned at conduit 14, also can partly or entirely stretch in conduit 14 outsides, if the plug 12 all or part of conduits 14 that are positioned at retreat conduit 14 or will push away before the plug 12, make plug 12 stretch out conduit 14, the tractive plug 12 again, also can realize the shutoff function.Preferable methods is in advance seal wire 18 to be passed conduit 14, the far-end of plug 12 and seal wire 18 are fixed or are bonded together, and plug 12 near-ends and conduit 14 are fixed or bonded together, and form an integral body that connects, this integral body has self-aiming function preferably, when entering body cavity, plug 12 and conduit 14 keeps relative static, helps entering and controls plugging device 10, after plugging device 10 puts in place, tractive near-end seal wire 18, diaphragm 22 spreads out, and forms bolt shape plug then.

Can not be with or have the guide at the far-end of plug 12 and hold 16, preferably have the guide and hold 16, the guide holds 16 can be that the seal wire 18 that prolongs is formed, also can form by metal tube, polymer pipe, or the complex of tinsel, metal tube, polymer pipe is formed, the guide holds 16 structures can adopt known guiding wire pointed tip configuration, preferably is made of the seal wire 18 outer softish polymer chucks of coating one deck again of prolongation the seal wire 18 that prolongs.Guide's effect of 16 of holding is to improve plugging device 10 in endoceliac self-aiming ability, makes device have better compliance, improves the ability of plugging device 10 penetrate things.

Before the diaphragm 22 of plug 12 does not disperse is flat, its geometry can be rectangle, waveform or other irregular figures, the preferred taper of the shape at diaphragm two ends, taper helps diaphragm and passes barrier, the angle of taper is the 30-120 degree, preferred 40-90 degree, Fig. 3 A-3C is the shape sketch map of three kinds of typical adherent plugs.Diaphragm-operated number is the 3-8 sheet, and preferred 4 and 6, Fig. 4 A-4B is a diaphragm sheet number when being 4 and 6, and diaphragm is the sketch map of the plug of 360 ° of distributions.Diaphragm can be by membranoid substance, fabric, non-woven fabrics, perhaps their complex, material can be selected the polymer nontoxic to human body for use, as materials such as polytetrafluoroethylene (PTFE), polyethylene (PE), perfluoroalkoxy (PFA), polyurethane (PU), perfluoro methyl vinyl ether (MFA), perfluor n-propyl vinyl ether (PPVE), nylon, polyester, fibroins, the principle of selecting the plug material be formed compression or foldable structure be one softer relatively, can not cause the material of body cavity wound.Unfolded plug 12, its length range are 1-10cm, preferred 2-6cm, more preferably 3-5cm.The unfolded plug 12 of tractive, plug 12 length shorten, and form bolt shape structure, and at this moment the width of plug 12 is similar to by the tube chamber of shutoff, and width range is 1-10mm, is generally 2-6mm, preferred 3-5mm.Unfolded plug 12 thickness are generally all less than 1mm, greater than 0.004mm.Unfolded plug 12 is generally continuous sealing, but also can be discontinuous, or opening, opening or hole can be used for needs and inject fluidic occasion.

Surface-coated hydrophilic coating at plug 12, hydrophilic coating is the known kind of insider, and described hydrophilic coating is a kind of in polyvinylpyrrolidone, polyethylene glycol oxide, Polyethylene Glycol, polypropylene glycol, polyacrylamide, the polyacrylic acid or their complex or polymer.The method that the multi-disc diaphragm is melted with glue or heat is fixed on the plug guidewire lumen, again the multi-disc film is organized into flat, and hydrophilic coating is coated in blade surface, solidifies through coating, forms the plug of flat.When plug advanced in body cavity, the hydrophilic coating on surface helped to reduce propulsive frictional force, avoided the injury to tissue, alleviated patient's misery.When the tractive plug, the coating between the diaphragm is split under compression force, bonding destroyed between the diaphragm, and diaphragm spreads out, and continues tractive plug diaphragm, forms the stopper of compact conformation.

The seal wire 18 that tractive is used, it can be filament, comprise tinsel and nonmetallic silk thread, shape can be shapes such as circular, square, pancake, can be tubular structure also, comprise metal tube and non-metallic pipe, preferably have the seal wire of guidance function, comprise the rustless steel seal wire that those skilled in the art know, titanium alloy seal wire etc.

As Fig. 5 A-5C the whole process that 10 pairs of ureteral calculus of plugging device carry out shutoff and remove has been described.Plugging device 10 can advance plugging device 10 that it is moved in ureter by traditional intervening mode as directly arriving the calculus near-end along first lead sheath pipe then, and can keep or withdraw from first lead sheath pipe this moment.The guide of plugging device 10 holds 16 gaps that can pass calculus and ureter wall, unfolded plug 12 is held 16 drive lower part or is all passed calculus the guide, tractive seal wire 18, flat plug 12 forms bolt shape plug at the calculus far-end, plug 12 is dragged towards the bladder direction in ureter, calculus can be dragged to bladder or first lead sheath pipe, after also calculus can being carried out shutoff, lithotrite with rubble apparatus such as laser or other energy smashes calculus, then rubble is dragged to bladder or sheath pipe, because the plugging action of plug 12 moves to kidney on the calculus that can prevent to smash in the rubble process.

Claims (9)

1. the body cavity stopper of a compactness, comprise a seal wire, a conduit, can be by the plug of axial compression, it is characterized in that: described plug is made of the flat membrane more than two, described membrane surface scribbles hydrophilic coating and makes each diaphragm bonding flat that is mutually, on the diaphragm axial direction, be provided with the tube chamber that at least one can pass seal wire, diaphragm-operated far-end and seal wire are fixed, tractive seal wire near-end, unfolded plug are forming the bolt shape plug be circumferential distribution after by axial compression in the radial direction.

2. the body cavity stopper of compactness according to claim 1, it is characterized in that: described diaphragm is three to eight.

3. the body cavity stopper of compactness according to claim 2, it is characterized in that: described diaphragm is four or six.

4. the body cavity stopper of compactness according to claim 1, it is characterized in that: described diaphragm is thin film or fabric or non-woven fabrics or their complex.

5. the body cavity stopper of compactness according to claim 1 is characterized in that: described hydrophilic coating is a kind of in polyvinylpyrrolidone, polyethylene glycol oxide, Polyethylene Glycol, polypropylene glycol, polyacrylamide, the polyacrylic acid or their complex.

6. the body cavity stopper of compactness according to claim 5, it is characterized in that: described hydrophilic coating is that polyvinylpyrrolidone is or/and polyethylene glycol oxide.

7. the body cavity stopper of compactness according to claim 1, it is characterized in that: described plug near-end and conduit are fixed.

8. the body cavity stopper of compactness according to claim 1 is characterized in that: described plug partially or completely is exposed to outside the conduit before tractive seal wire near-end not.

9. the body cavity stopper of compactness according to claim 1 is characterized in that: described plug far-end is provided with guide's end, and described guide's end is the outer coating one layer of polymeric chuck of the seal wire that prolongs.

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