CN206228386U - A kind of injection aquagel plugging device for ureteroscope lithotrity - Google Patents

Abstract

The utility model relates to a kind of injection aquagel plugging device for ureteroscope lithotrity, including syringe, conduit, pellicle, hydrogel and metal guide seal wire, the outer surface that the pellicle is wrapped in the conduit forms loculoid cavity, the cavity is tightly connected with the conduit, at least one through hole is provided with positioned at the duct wall of the inside cavity, the tube at one end closing, the openend of the conduit connects with the syringe, and the blind end of the conduit is connected with the metal guide seal wire.The plugging device for ureteroscope lithotrity that the utility model is provided can prevent the upper ease of calculus in ureter in operation, be easy to operation technique, reduce tissue damage, and closure rubble success rate is high.

Description

A kind of injection aquagel plugging device for ureteroscope lithotrity

Technical field

The utility model is related to technical field of medical instruments, more particularly to a kind of injectable for ureteroscope lithotrity Hydrogel plugging device.

Background technology

Calculi in urinary system is the common disease of Urology Surgery, and calculus is found in any portion of kidney, ureter, wing skin and urethra Position, it is most commonly seen with ureteral calculi with kidney.Stone obstruction often results in the infringement of renal function, and renal function can be caused to decline when serious Exhaust.The treatment of kidney stone is main based on open surgery and medicine dissolution therapy, and 95% calculus can be by ureteroscope rubble Art is solved.

At present, ureteroscope rubble have become treatment ureteral calculi optimal treatment means, with operation wound it is small, Recover fast advantage.But ureteroscope rubble stone-extraction operation there is also certain deficiency, on the one hand, the bath that must be driven in the wrong direction in art is to protect Card surgical field of view is clear, in ureter, epimere calculus and stone debris be easily poured the recoil strength punching of current or rock breaking tool Return renal plevis or enter kidney calices, and cause kidney stone, increase operating difficulty；On the other hand, the intraluminal residual stone of ureter Chip lacks efficiently and effectively mode and takes out.

Ureter pipeline plugging device is a kind of safe and effective instrument for treating ureteral calculi, can substantially reduce urine output Calculus drift in pipe mirror lithotrity, improves calculus clearance rate, shortens operating time, and stone debris can be hauled out into ureteral lumen Road, to reduce the pain that postoperative row's stone causes, with good clinical value.At home and abroad, conventional at present is machinery Plugging device, is put in by ureter, is placed in stone upper end, is controlled by external switch, and when open, plugging device will open Into a umbellule, so as to be blocked to calculus.But this plugging device has certain shortcoming, because urethra is more narrow, inserting After this plugging device, then lithotriptoscepe is put in also by urethra will easily block or be not placed into, and wound can be compared with Greatly.In addition, the umbellule that plugging device is formed when opening has hole, it is impossible to block rubble completely, and price is also expensive, and cost is non- Chang Gao.

In-situ injection hydrogel is the novel hydrogels system for occurring in recent years, with good plasticity and tissue compatible Property, the hydrogel material with certain fluidity is implanted by the method injected, it is easy to do not advised full of entirely having The then defect of shape, operation wound is very small.

In sum, a kind of upper ease that calculus is prevented from kidney stone operation is badly in need of at present, is easy to operation technique, sealed Stifled rubble success rate plugging device high.

Utility model content

The utility model aims to solve the problem that deficiency of the prior art, there is provided one kind in the operation of ureteroscope rubble for preventing Escaped on ureteral calculi, be easy to operation technique, reduce tissue damage, closure rubble success rate plugging device high.

To achieve the above object, the utility model is adopted the technical scheme that:

A kind of injection aquagel plugging device for ureteroscope lithotrity, including syringe, conduit, pellicle, water Gel and metal guide seal wire, the outer surface that the pellicle is wrapped in the conduit form loculoid cavity, the cavity It is tightly connected with the conduit, at least one through hole, the tube at one end is provided with positioned at the duct wall of the inside cavity Closing, the openend of the conduit connects with the syringe, and the blind end of the conduit is connected with the metal guide seal wire； In a state of use, the hydrogel is injected into the conduit and then is filled to the cavity by syringe.

Used as preferred embodiment of the present utility model, the cavity is Nian Jie by super glue with the conduit connection Sealing.

Used as preferred embodiment of the present utility model, the through hole is provided with multiple, and Arbitrary distribution is in the conduit On the wall of side.

Used as preferred embodiment of the present utility model, the metal guide seal wire is thread or tubular structure.

It is 5-50mm positioned at the catheter length of the inside cavity as preferred embodiment of the present utility model.

As preferred embodiment of the present utility model, the syringe needle afterbody cylinder of the syringe with diameter greater than described The internal diameter at catheter opening end.

Used as preferred embodiment of the present utility model, the surface of the metal guide seal wire is provided with diaphragm.

As preferred embodiment of the present utility model, the cavity ovalize or spherical.

Used as preferred embodiment of the present utility model, in a state of use, the expansion scope of the cavity is 5-25mm.

A kind of application of hydrogel in the device for preventing from being escaped in calculus in manufacturing ureteroscope lithotrity.

Compared with the machine plugging device of existing ureteroscope lithotrity, reasonable in design, simple structure is used the utility model It is convenient, with advantages below:

1. cavity of the present utility model is in a contracted state, it is easy to pass through in gap between calculus and ureter, reaches knot Stone top, it is to avoid plugging device elapses calculus during inserting, reduces the risk for damaging mucous membrane of ureter.

2. rapid in pellicle cavity toward injection hydrogel sol liquid in cavity by syringe of the present utility model The hydrogel solid with some strength is formed, pellicle made of soft, hydrogel macromolecule can not be passed through, and other small molecules Can pass freely through, with good water penetration and histocompatbility, because hydrogel has plasticity and histocompatbility very high, Larger elasticity, so pellicle cavity can be brought into close contact to block ureteral calculi with urine output inside pipe wall, effectively prevents urine output Escaped on pipe rubble, reduce the friction of rubble and ureter tube wall, prevent from damaging ureter tube wall, behaviour high with calculus clearance rate The advantages of making simple, operation safety is good.

3. the medical aquogel material that the utility model is used is the macromolecular material of non-toxic and safe, is forming gel Also harmful substance will not be produced during solid, it is cheap, greatly reduce the surgery cost of patient, the utility model institute The plugging device said, will form gel solids, so as to form right behind the front end that ureter kidney stone is injected in liquid hydrogel The closure of calculus, reduces the calculus drift in kidney stone rubble surgical procedure, improves calculus clearance rate.

4. the utility model pellicle is used as cavity wall, does not influence normal perfusion, and the form of stopper device will not be because Perfusion in endoscopic working channel and change, operation operability can be significantly improved, hence it is evident that mitigate patient pain.

Brief description of the drawings

Fig. 1 show structural representation when the utility model is not used.

Fig. 2 show the utility model structural representation in a state of use.

Reference：1st, syringe, 2, conduit, 3, pellicle, 4, through hole, 5, cavity, 6, metal guide seal wire.

Specific embodiment

In order that the purpose of this utility model, technical scheme and advantage become more apparent, below in conjunction with accompanying drawing and implementation Example, is further elaborated to the utility model.

The utility model is described in detail below in conjunction with specific embodiment；It should be noted that described in following embodiments Technical characteristic or the combination of technical characteristic be not construed as isolated, they can be mutually combined so as to reach more Good technique effect.

A kind of injection aquagel plugging device for ureteroscope lithotrity as depicted in figs. 1 and 2, including syringe 1st, conduit 2, pellicle 3, hydrogel and metal guide seal wire 6, the outer surface that pellicle 3 is wrapped in conduit 2 forms loculoid Cavity 5, cavity 5 is tightly connected with conduit 2, and the duct wall inside cavity 5 is provided with least one through hole 4, conduit 2 one End seal is closed, and the openend of conduit 2 connects with syringe 1, and the blind end of conduit 2 is connected with metal guide seal wire 6；In use state Under, hydrogel is injected into conduit 2 and then is filled to cavity 5 by syringe 1.

In the present embodiment, pellicle 3 refers to only to allow ion and the freely through membrane structure of small molecule, and large biological molecule is not Can pass freely through, membrane surface is smooth, soft texture, with certain elasticity, and toughness is high, is not easily broken.

In the present embodiment, cavity 5 is tightly connected by the outer wall that a piece of pellicle 3 is contacted with conduit 2；Cavity 5 insert it is defeated It is contraction state before urinary catheter, is easy to gap of the cavity 5 from beside calculus to pass through, is noted again after cavity 5 passes through ureteral calculi Enter hydrogel in cavity 5, hydrogel forms solid gel in cavity 5, and cavity 5 blocks intra-ureteral knot after expanding Stone.

Used as preferred embodiment of the present utility model, hydrogel uses medical aquogel, including natural and artificial synthesized Two classes；Natural hydrogel is selected from gelatin, collagen, fibrin, hyaluronate, alginate, agarose and shitosan One or more；Artificial synthesized hydrogel is selected from polyacrylic acid, polyacrylic acid derivative, polyethylene glycol oxide, polyethylene glycol oxide and spreads out One or more in raw copolymer, polyvinyl alcohol, polyphosphazene and polypeptide.Foregoing medical aquogel is macromolecule material Material, it is impossible to freely pass through pellicle, after blocking successfully, can prevent from being escaped on ureteral calculi in operation, be easy to operation technique, Tissue damage is reduced, closure rubble success rate is greatly improved.

Used as preferred embodiment of the present utility model, cavity 5 passes through super glue adhering and sealing with the junction of conduit 2, This kind of connected mode is simple and reliable, with low cost, is conducive to the reduction of plugging device production cost.

Used as preferred embodiment of the present utility model, through hole 4 is provided with multiple, and Arbitrary distribution is on the side wall of conduit 2.

Preferably, through hole 4 is evenly distributed on the side wall of conduit 2, make aquagel liquid evenly into cavity 5, Cavity 5 is obtained more complete expansion, can preferably block intra-ureteral calculus.

Used as preferred embodiment of the present utility model, metal guide seal wire 6 is thread or tubular structure, and metal guide is led The material of silk 6 is stainless steel or titanium alloy；Metal guide seal wire 6 can be passed through from calculus side gap, guiding leading with cavity 5 Pipe 2 smoothly enters calculus epimere, because of the made of soft of metal guide seal wire 6, is prevented from being damaged in ureter during inserting Wall, reduces the suffered pain in operation of patient.

Used as preferred embodiment of the present utility model, the length of conduit 2 inside cavity 5 is 5-50mm, this chi Very little plugging device effect during use of performing the operation more preferably, can improve operation operability, mitigate the pain of patient.

Used as preferred embodiment of the present utility model, the syringe needle afterbody cylinder of syringe 1 is opened with diameter greater than conduit 2 The internal diameter at mouth end；When using syringe 1 toward injection hydrogel in the openend of conduit 2, in the syringe needle insertion conduit 2 of syringe 1 Until syringe needle afterbody abuts 2 mouthfuls of conduit, because of the internal diameter with diameter greater than the openend of conduit 2 of the syringe needle afterbody cylinder of syringe 1, just Hydrogel from 2 mouthfuls of conduit place leakage can be farthest prevented when syringe 1 injects hydrogel, hydrogel is not only prevent and is existed Waste during use, while improve the injection speed of hydrogel, indirectly reduces the time of operation, reduces patient The pain brought by operation.

Used as preferred embodiment of the present utility model, the surface of metal guide seal wire 6 is provided with diaphragm；In metal guide The surface of seal wire 6 is provided with layer protecting film, using diaphragm protection metal guide seal wire 6, reduces metal guide seal wire 6 and urine output The friction of calculus, extends the usage cycles of whole plugging device in pipe.

As preferred embodiment of the present utility model, the ovalize of cavity 5 or spherical；In a state of use, cavity 5 Expansion scope is 5-25mm.

A kind of application of hydrogel in the device for preventing from being escaped in calculus in manufacturing ureteroscope lithotrity；The utility model Gel solids are formed behind the front end that a kind of hydrogel in liquid can be injected ureter kidney stone, so as to be formed to calculus Closure, reduces the calculus drift in kidney stone rubble surgical procedure, is easy to operation technique, reduces tissue damage, improves calculus clear Except rate, closure rubble success rate is high.

Under use state, in the operation of ureteroscope rubble, the rear that the conduit of unimplanted liquid first is stretched into calculus is defeated Urinary catheter near-end, then aquagel liquid is accurately injected to pellicle cavity 5 by syringe, hydrogel is fast under body temperature effect Rapid hardening knot, pellicle cavity 5 is expanded to preferable radius, prevents calculus from escaping to block ureter near-end, is before hydrogel injection Collosol state, solid-state is re-condensed into after injection pellicle, with good plasticity and histocompatbility, realizes closure；Due to The water penetration of pellicle, rubble is operated under the condensation of hydrogel does not influence normal perfusion and ureteroscope, can be entered by syringe needle The injection of water-filling gel liquid and the perfusion of ureter are affected.It is the utility model simple structure, reasonable in design, easy to use, lead to Cross and closure entered to ureteral calculi using pellicle and hydrogel, to surrounding tissue not damaged, can significantly improve procedure efficiency and Effect, mitigates the pain and burden of patient.

Claims (9)

1. a kind of injection aquagel plugging device for ureteroscope lithotrity, it is characterised in that including syringe, conduit, Pellicle, hydrogel and metal guide seal wire, the outer surface that the pellicle is wrapped in the conduit form loculoid cavity, The cavity is tightly connected with the conduit, and at least one through hole is provided with positioned at the duct wall of the inside cavity, described Tube at one end is closed, and the openend of the conduit connects with the syringe, the blind end of the conduit and the metal guide Seal wire is connected；In a state of use, the hydrogel is injected into the conduit and then is filled to the chamber by syringe In vivo.

2. a kind of injection aquagel plugging device for ureteroscope lithotrity as claimed in claim 1, it is characterised in that The cavity passes through super glue adhering and sealing with the conduit connection.

3. a kind of injection aquagel plugging device for ureteroscope lithotrity as claimed in claim 1, it is characterised in that The through hole is provided with multiple, and Arbitrary distribution is on the side wall of the conduit.

4. a kind of injection aquagel plugging device for ureteroscope lithotrity as claimed in claim 1, it is characterised in that The metal guide seal wire is thread or tubular structure.

5. a kind of injection aquagel plugging device for ureteroscope lithotrity as claimed in claim 1, it is characterised in that It is 5-50mm positioned at the catheter length of the inside cavity.

6. a kind of injection aquagel plugging device for ureteroscope lithotrity as claimed in claim 1, it is characterised in that The internal diameter with diameter greater than the catheter opening end of the syringe needle afterbody cylinder of the syringe.

7. a kind of injection aquagel plugging device for ureteroscope lithotrity as claimed in claim 1, it is characterised in that The surface of the metal guide seal wire is provided with diaphragm.

8. a kind of injection aquagel plugging device for ureteroscope lithotrity as claimed in claim 1, it is characterised in that The cavity ovalize or spherical.

9. a kind of injection aquagel plugging device for ureteroscope lithotrity as claimed in claim 1, it is characterised in that In a state of use, the expansion scope of the cavity is 5-25mm.