CN206499506U - Releasable choledochoscope stone extraction basket - Google Patents

Abstract

The utility model discloses a kind of releasable choledochoscope stone extraction basket, include the outer tube of handle, push rod, basket body and top seal, when extracting calculus, calculus is set to be clipped between the first basket silk and the second basket silk, gas is entered the string bag heaves the string bag, pull outer tube, calculus pocket is moved in the string bag to external, process is extracted simply, accuracy is good, it is less demanding to operator's skill, strong applicability；When running into obstruction, open gas in gas outlet upper sealing valve, the string bag and discharge, calculus is discharged, rotary inner core bar, it is rotated relative to outer layer bar, so as to adjust spacing between the first basket silk and the second basket silk, outer tube is pulled, stone extraction basket is taken out, it is to avoid occurs incarceration, calculus in the prior art and ferrule are avoided while the problem of departing from or be partially disengaged, basket can be made smoothly to take out, it is to avoid other complication such as surgical operation and massive haemorrhage, reduce operation risk.

Description

Releasable choledochoscope stone extraction basket

Technical field

The utility model belongs to curable product technical field, and more particularly to a kind of releasable choledochoscope takes stone Basket.

Background technology

Generally taking the method for stone has：1. being detected with metal hard lithotomy forceps along bile duct direction and taking stone, this method needs There is abundant surgical experience, otherwise either dynamics or angle to patient to may not all cause damage, additionally, due to pincers point It is relatively thick, it is difficult to take net calculus；2. flushing takes stone, this method is more gentle compared with the former, but reflux is substantially when rinsing, so punching Wash pressure relatively low, and can not effectively take out the less calculus of larger or mobility, take stone less effective, and be unable to radiography with Understand the patency of bile duct hypomere；3. with the special stone extraction basket of choledochoscope detect and taking stone, this method can effectively take Stone and safety it is easy to learn, it is adaptable to open abdomen and laparoscopic surgery.

But in basket takes the whole clinical process of stone, by feel, repeatedly blind operation is extracted when extracting calculus, is compared Take time and effort, add the pain of patient.In addition, basket, which is taken in the conventional complication of stone, removes acute pancreatitis, bleeding, perforation Outside, it is another it is undesired be calculus and basket incarceration, typically compared with it is normal occur it is excessive in calculus, it is impossible to take out, with basket Basket handle portion can typically be cut in bile duct, connect lithotriptor by incarceration in the lump, and calculus is carried out to take out after rubble, but right In harder calculus, it is possible that calculus broken can not be opened, intensity and every net to each connection member of stone extraction basket The intensity of basket silk has higher requirement, clinically more often occurs in which and is broken when one or a few basket silk is different, now net Incarceration in bile duct, is easily caused the danger complications such as perforation, now typically can only promptly send surgery basket apparatus simultaneously with calculus Treatment, no small influence is caused on the vital sign of patient.

Existing stone extraction basket is generally provided with ferrule.Ferrule is acted on：One is connection basket silk, and two be to play Guide effect, Chinese patent application 201220250596.7 discloses a kind of stone extraction basket, when the dynamics for extracting calculus is excessive When, ferrule and basket silk come off, although basket silk can take out, and calculus can also return to gall-bladder, but the gold come off Category head has also been returned in gall-bladder together with calculus, is not taken calculus not only now, is added foreign matter to gall-bladder on the contrary, needs to increase again Plus operating time takes ferrule, because ferrule varies, it is likely that cause duodenum intestines during ferrule is gone Road ruptures, and causes massive haemorrhage.

Chinese patent application 201420039073.7 discloses a kind of stone extraction basket, and ferrule is provided with corresponding with basket silk Four circular holes, two relative baskets silks are welded and fixed with corresponding two circular holes, in addition two relative baskets thread with it is right The two circular holes extruding connection answered, when extracting excessive calculus really up to the mark, pulls slip ring to cause the pulling force of basket silk to be more than basket Silk and the extrusion friction power of ferrule, can depart from ferrule by two baskets silk of extruding connection, and other two baskets thread Firmly connect ferrule, it is to avoid the problem of calculus and ferrule depart from simultaneously, but the basket of the ferrule that comes off silk is easily scraped Sick and wounded human organs inwall.

Utility model content

In view of the deficienciess of the prior art, the purpose of this utility model is that providing a kind of releasable choledochoscope takes stone Basket, overcomes stone extraction basket of the prior art to extract calculus difficulty, calculus can not be taken out running into excessive calculus, and easily There is basket the incarceration even technical problem of basket silk fracture scratch patient's organ inwall.

To achieve the above object, the utility model provides following technical scheme：A kind of releasable choledochoscope lithotomy net Basket, including handle, push rod, the outer tube of basket body and top seal, the push rod upper end pass through outer tube top, lower end set It is located in outer tube, the push rod includes the internal core rod and outer layer bar of open column shape, the top and bottom difference of the outer layer bar The first installing plate and the second installing plate are provided with, the internal core rod is set in outer layer bar through the first installing plate, the handle It is connected to internal core rod top, the wooden partition of the bar wall of the outer layer bar, the first installing plate and the second installing plate is hollow two layers, The wooden partition lower floor of first installing plate is provided with annular via, and the bar wall top of the outer layer bar and the hole wall of through hole connect and made Outer layer bar and the first installing plate hollow space are communicated, and the wooden partition upper strata of second installing plate is provided with annular via, described outer The layer bar wall bottom of bar and the hole wall of through hole connect and communicate outer layer bar and the second installing plate hollow space, first installing plate On be provided with air inlet and gas outlet, the air inlet is connected by tracheae with inflator, and sealing is provided with the gas outlet Valve；The basket body includes hollow the first basket silk, the second basket silk and the circle being made up of double-deck soft gas impermeable material The shape string bag, the first basket silk and the second basket silk are made up of elastic metallic material, the first basket silk and the second basket Silk is excessive stepped of corner circular arc, and described first basket silk one end is connected with internal core rod bottom, second installing plate Wooden partition lower floor be provided with circular hole, described second basket silk one end is connected with the hole wall of circular hole, the first basket silk and second The other end of basket silk is symmetrically connected on the string bag, pulls push rod, and the basket body enters in outer tube, promotes push rod, institute State basket body to remove from outer tube, rotary inner core bar, make its relative to outer layer bar rotate so that adjust the first basket silk and Spacing between second basket silk, makes calculus be clipped between the first basket silk and the second basket silk, inflator is inflated, and gas is along the One installing plate, outer layer bar, the hollow space of the second installing plate heave the string bag into the string bag, pull outer tube, calculus pocket is existed To external mobile in the string bag, obstruction is run into, gas in gas outlet upper sealing valve, the string bag is opened and discharges, calculus is discharged, in rotation Core bar, makes it be rotated relative to outer layer bar, so as to adjust spacing between the first basket silk and the second basket silk, pulls outer tube, Stone extraction basket is taken out.

As further improvement of the utility model, the string bag includes some hollow inflatable annulus being arranged concentrically, The hollow connection strap being made up between the inflatable annulus of elastic gas impermeable material is connected, and gas can be by connection strap each Circulated between individual inflatable annulus.

As further improvement of the utility model, some strip leakproof bands, institute are provided between the inflatable annulus Leakproof is stated to be connected to two ends on two adjacent inflation annulus.

As further improvement of the utility model, some fishing net shaped leakproof bands are provided between the inflatable annulus, The leakproof band both sides are connected with adjacent two inflation annulus respectively, and both sides are connected with adjacent two hollow connection straps respectively in addition.

As further improvement of the utility model, connector, the connector bag are provided with first installing plate The internal layer part and outer layer part of hollow cylindrical are included, the outer layer part is arranged on outside internal layer part, and the internal layer part is by metal material system Into the outer layer part is made up of elastomeric material, and the internal core rod is circumferentially provided with ring-type and caved inward portion, the depressed part Some passages are provided with bar wall, the internal layer part is stuck in depressed part, are provided with the internal layer part and outer layer part and The gas channel that one installing plate hollow space is communicated.

As further improvement of the utility model, the rubber keeper of disc-shaped is provided with the outer tube, it is described The perforation passed through for internal core rod and outer layer bar is provided with keeper.

As further improvement of the utility model, the first installing plate opposite sides is provided with the second-hand in arcuation Handle.

It is axially disposed in the internal core rod to have a graduation mark, described as further improvement of the utility model One installing plate upper surface is circumferentially provided with some graduation marks centered on internal core rod.

Stone extraction basket of the present utility model is when extracting calculus, rotary inner core bar, it is rotated relative to outer layer bar, so that Spacing between the first basket silk and the second basket silk is adjusted, calculus is clipped between the first basket silk and the second basket silk, inflates Cylinder is inflated, and gas, which enters the string bag, heaves the string bag, pulls outer tube, by calculus pocket in the string bag to external mobile, extract process Simply, accuracy is good, less demanding to operator's skill, and strong applicability does not have ferrule in basket front end, can be more convenient set Take the calculus at dead angle；When running into obstruction, open gas in gas outlet upper sealing valve, the string bag and discharge, calculus is discharged, in rotation Core bar, makes it be rotated relative to outer layer bar, so as to adjust spacing between the first basket silk and the second basket silk, pulls outer tube, Stone extraction basket is taken out, it is to avoid occur incarceration, it is to avoid calculus and ferrule depart from or are partially disengaged simultaneously in the prior art The problem of, basket can be made smoothly to take out, it is to avoid other complication such as surgical operation and massive haemorrhage, reduce operation risk.

Brief description of the drawings

Fig. 1 is the structural representation that the utility model basket body stretches out outer tube state；

Fig. 2 is the structural representation that the utility model basket body is retracted outer tube state；

Fig. 3 is the structural representation of connector of the present utility model；

Fig. 4 is the structural representation that the utility model takes stone from bile duct；

Fig. 5 is the structural representation of the utility model basket body；

Fig. 6 is the structural representation of the utility model string bag.

Embodiment

The utility model is described in further detail below in conjunction with the embodiment given by accompanying drawing.

Shown in reference picture 1-6, a kind of releasable choledochoscope stone extraction basket of the present embodiment, including handle 1, push rod 2, net Basket body 3 and the outer tube of top seal 4, the upper end of push rod 2 pass through the top of outer tube 4, and lower end is set in outer tube 4, push rod 2 Internal core rod 21 and outer layer bar 22 including open column shape, the top and bottom of outer layer bar 22 are respectively arranged with the He of the first installing plate 5 Second installing plate 6, internal core rod 21 is set in outer layer bar 22 through the first installing plate 5, and handle 1 is connected to the top of internal core rod 21, The wooden partition of the bar wall of outer layer bar 22, the first installing plate 5 and the second installing plate 6 is hollow two layers, the wooden partition of the first installing plate 5 Lower floor is provided with annular via, and the bar wall top of outer layer bar 22 and the hole wall of through hole, which connect, makes the installing plate 6 of outer layer bar 22 and first Hollow space is communicated, and the wooden partition upper strata of the second installing plate 6 is provided with annular via, the bar wall bottom and the hole of through hole of outer layer bar 22 Wall, which connects, communicates the hollow space of 22 and second installing plate of outer layer bar 6, and air inlet 51 and gas outlet are provided with the first installing plate 5 52, air inlet 52 is connected by tracheae with inflator 7, and sealing valve 8 is provided with gas outlet 52；Basket body 3 includes hollow First basket the 31, second basket of silk silk 32 and the circular string bag 33 being made up of double-deck soft gas impermeable material, the first basket silk 31 It is made up with the second basket silk 32 of elastic metallic material, the first basket silk 31 and the second basket silk 32 are that corner circular arc is excessive Stepped, 31 one end of the first basket silk are connected with the bottom of internal core rod 21, and the wooden partition lower floor of the second installing plate 6 is provided with circular hole, the Two baskets silk, 32 one end are connected with the hole wall of circular hole, and the other end of the first basket silk 31 and the second basket silk 32 is symmetrically connected to net On pocket 33；Before being ready for taking stone, the string bag 33 is put in order, it is convenient to be relatively rotated in the first basket silk 31 and the second basket silk 32 When, the string bag 33 is deployed, push rod 2 is pulled, basket body 3 is entered in outer tube 4, is determined under choledochoscope behind calculus position, Basket body 3 is extend into calculus annex, push rod 2 is promoted, basket body 3 is removed from outer tube 4, and rotary inner core bar 21 makes It is rotated relative to outer layer bar 22, thus adjust the first basket silk 31 and second basket silk 32 between spacing, also make the string bag 33 by Gradually deploy, calculus is clipped between the first basket silk 31 and the second basket silk 32, the first basket silk 31 and the second basket silk 32 are Excessive stepped of corner circular arc, stretches out the length of outer tube 4, just by adjusting the first basket silk 31 and the second basket silk 32 The spacing of 32 ends of the first basket silk 31 and the second basket silk can be adjusted, so that different size of calculus is adapted to, inflator 7 dozens Gas, hollow space of the gas along the first installing plate 5, outer layer bar 22, the second installing plate 6, which enters the string bag 33, heaves the string bag 33, So even if the string bag 33 could not be put in order, once inflation, also can smoothly deploy to heave completely, the surface area of the string bag 33 increases after expansion Greatly, and calculus contact area increase, it is easier to catch calculus, pull outer tube 4, the side of the string bag 33 is by from the first basket Basket 32 pulling force forward of silk of silk 31 and second, middle part by calculus resistance, by calculus pocket in the string bag 33 to external mobile, The string bag 33 can also be arranged to peviform, calculus is more difficult to spill during being displaced outwardly with calculus, even if calculus is being moved Being broken into during dynamic more short grained will not also spill；Obstruction is run into, gas in gas outlet upper sealing valve 8, the string bag 33 is opened and arranges Go out, the string bag 33 is gradually tapered up, and the contact area of calculus is gradually reduced, and the intermolecular forces of calculus are faded away, and calculus is released Put, rotary inner core bar 21 makes it be rotated relative to outer layer bar 22, so as to adjust between the first basket silk 31 and the second basket silk 32 Spacing, the same side that the first basket silk 31 and the second basket silk 32 are moved to calculus, in order to avoid the first basket silk 31 and the Two baskets silk 32 rubs repeatedly during exiting with bile duct inwall, can also pull push rod 2, by the first basket silk 31 and the Two baskets silk 32 is taken in outer tube 4, pulls outer tube 4, stone extraction basket is taken out, larger calculus is further smashed, then Progress takes stone.

As a kind of improved embodiment, the string bag 33 includes some hollow inflatable annulus 34 being arranged concentrically, The hollow connection strap 35 being made up between inflatable annulus 34 of elastic gas impermeable material is connected, and gas can be existed by connection strap 35 Circulated between each inflatable annulus 34.This structure design is partly in order to when outwards removing calculus, the string bag 33 is more preferable Catch calculus, partly in order to make basket body 3 adapt to different size of calculus, when the particle of calculus is smaller, a side The length of outer tube 4 is stretched out in face by adjusting the first basket silk 31 and the second basket silk 32, to adapt to the size of calculus, on the one hand The surface area of the string bag 33 is adjusted by aeration quantity, when calculus particle is smaller, the amount of inflation is less, it is adjacent inflation annulus 34 it Between spacing it is smaller, the developed surface of the whole string bag 33 is smaller, in order to avoid calculus is exposed during removal, when calculus particle is larger, Aeration quantity is more, and the hollow connection strap 35 between adjacent inflation annulus 34 is also gradually full of by gas, the expansion of the whole string bag 33 Face is larger, is caught whole calculus with facilitating.

As a kind of improved embodiment, some strip leakproof bands 36 are provided between inflatable annulus 34, are prevented Leakage band 36 two ends are connected on two adjacent inflation annulus 34.Prevent less calculus particle during removal from net Spilt in pocket 33.

As a kind of improved embodiment, some fishing net shaped leakproof bands 36 are provided between inflatable annulus 34, The both sides of leakproof band 36 are connected with adjacent two inflation annulus 34 respectively, and both sides are connected with adjacent two hollow connection straps 35 respectively in addition, Fishing net shaped leakproof band 36 is more preferable to the leak preventing effect of less calculus particle, and larger particles calculus once occurs during removal Fragmentation, the little particle being broken into will not be also scattered in outside the string bag 33.

As a kind of improved embodiment, connector 9 is provided with the first installing plate 5, connector 9 includes hollow Columned internal layer part 91 and outer layer part 92, outer layer part 92 are arranged on outside internal layer part 91, and internal layer part 91 is made up of metal material, outside Layer part 92 is made up of elastomeric material, and internal core rod 21 is circumferentially provided with ring-type and caved inward portion 23, is set on the bar wall of depressed part 23 Some passages 24 are equipped with, internal layer part 21 is stuck in depressed part 23, are provided with and are installed with first on internal layer part 91 and outer layer part 92 The gas channel that the hollow space of plate 5 is communicated.This structure design is ensureing that internal core rod 21 and outer layer bar 22 can be relative to smoothly rotating On the premise of, gas flowing can be carried out between internal core rod 21 and the hollow space of outer layer bar 22, can thus have a plurality of air-flow to lead to Road is passed through the string bag 33, it is to avoid one of gas channel is blocked, and the inflatable and deflatable of the string bag 33 is influenceed, by metal material system Into internal layer part 91 be in order that internal core rod 21 and outer layer bar 22 can be made up relative to smoothly rotating of elastomeric material

Outer layer part 92 be in order to play air seal effect.

As a kind of improved embodiment, the rubber keeper 41 of disc-shaped, keeper are provided with outer tube 4 The perforation passed through for internal core rod 21 and outer layer bar 22 is provided with 41.The setting of rubber keeper 41 is in order to the He of internal core rod 21 Outer layer bar 22 plays positioning action, internal core rod 21 and outer layer bar 22 is not moved easily.

As a kind of improved embodiment, the opposite sides of the first installing plate 5 is provided with the second handle in arcuation 10, second handle 10 is in order to which aspect is operated, when needing to make internal core rod 21 rotate relative to outer layer bar 22, by second handle 10 Grip in hand, handle 1 is rotated with finger, it is flexible to operation.

It is axially disposed in the internal core rod 21 to have a graduation mark as a kind of improved embodiment, it is described The upper surface of first installing plate 5 is circumferentially provided with some graduation marks centered on internal core rod 21.When internal core rod 21 is relative to outer layer After bar 22 is rotated, the high scale line of internal core rod 21 correspondence facilitates operator probably to judge the on the first installing plate 5 at different scales Spacing between 32 ends of one basket silk 31 and the second basket silk.

Described above is only preferred embodiment of the present utility model, and protection domain of the present utility model is not limited merely to Above-described embodiment, all technical schemes belonged under the utility model thinking belong to protection domain of the present utility model.It should refer to Go out, for those skilled in the art, some improvement under the premise of the utility model principle is not departed from and Retouching, these improvements and modifications also should be regarded as protection domain of the present utility model.

Claims (8)

1. releasable choledochoscope stone extraction basket, including handle（1）, push rod（2）, basket body（3）With the overcoat of top seal Pipe（4）, it is characterised in that：The push rod（2）Upper end passes through outer tube（4）Top, lower end is set in outer tube（4）It is interior, it is described Push rod（2）Internal core rod including open column shape（21）With outer layer bar（22）, the outer layer bar（22）Top and bottom set respectively It is equipped with the first installing plate（5）With the second installing plate（6）, the internal core rod（21）Through the first installing plate（5）It is set in outer layer bar （22）It is interior, the handle（1）It is connected to internal core rod（21）Top, the outer layer bar（22）Bar wall, the first installing plate（5）With Two installing plates（6）Wooden partition be hollow two layers, first installing plate（5）Wooden partition lower floor be provided with annular via, institute State outer layer bar（22）Bar wall top and the hole wall of through hole connect and make outer layer bar（22）With the first installing plate（6）Hollow bulb split-phase It is logical, second installing plate（6）Wooden partition upper strata be provided with annular via, the outer layer bar（22）Bar wall bottom and through hole Hole wall, which connects, makes outer layer bar（22）With the second installing plate（6）Hollow space is communicated, first installing plate（5）On be provided with air inlet Mouthful（51）And gas outlet（52）, the air inlet（52）Pass through tracheae and inflator（7）It is connected, the gas outlet（52）It is upper to set There is sealing valve（8）；The basket body（3）Including hollow the first basket silk（31）, the second basket silk（32）With by bilayer it is soft The circular string bag that matter gas impermeable material is made（33）, the first basket silk（31）With the second basket silk（32）By elastic metallic material Material is made, the first basket silk（31）With the second basket silk（32）For stepped, first net that corner circular arc is excessive Basket silk（31）One end and internal core rod（21）Bottom is connected, second installing plate（6）Wooden partition lower floor be provided with circular hole, described Two baskets silk（32）One end is connected with the hole wall of circular hole, the first basket silk（31）With the second basket silk（32）The other end pair Title is connected to the string bag（33）On, pull push rod（2）, the basket body（3）Into outer tube（4）In, promote push rod（2）, institute State basket body（3）From outer tube（4）It is middle to remove, rotary inner core bar（21）Outer layer bar（22）, make it relative to outer layer bar（22） Rotate, so as to adjust the first basket silk（31）With the second basket silk（32）Between spacing, make calculus be clipped in the first basket silk（31） With the second basket silk（32）Between, inflator（7）Inflate, gas is along the first installing plate（5）, outer layer bar（22）, second install Plate（6）Hollow space enter the string bag（33）Make the string bag（33）Heave, pull outer tube（4）, by calculus pocket in the string bag（33）It is interior To external mobile, obstruction is run into, gas outlet upper sealing valve is opened（8）, the string bag（33）Middle gas discharge, calculus is discharged, rotated Internal core rod（21）, make it relative to outer layer bar（22）Rotate, so as to adjust the first basket silk（31）With the second basket silk（32）It Between spacing, pull outer tube（4）, stone extraction basket is taken out.

2. releasable choledochoscope stone extraction basket according to claim 1, it is characterised in that：The string bag（33）If including The dry hollow inflatable annulus being arranged concentrically（34）, the inflatable annulus（34）Between be made up of elastic gas impermeable material Hollow connection strap（35）Connection, gas can pass through connection strap（35）In each inflatable annulus（34）Between circulate.

3. releasable choledochoscope stone extraction basket according to claim 2, it is characterised in that：The inflatable annulus（34） Between be provided with some strip leakproof bands（36）, the leakproof band（36）Two ends are connected to two adjacent inflation annulus （34）On.

4. releasable choledochoscope stone extraction basket according to claim 2, it is characterised in that：The inflatable annulus（34） Between be provided with some fishing net shaped leakproof bands（36）, the leakproof band（36）Annulus are inflated with adjacent two in both sides respectively（34）Phase Even, in addition both sides respectively with adjacent two hollow connection straps（35）It is connected.

5. the releasable choledochoscope stone extraction basket according to claim any one of 1-4, it is characterised in that：First peace Fill plate（5）On be provided with connector（9）, the connector（9）Internal layer part including hollow cylindrical（91）With outer layer part（92）, The outer layer part（92）It is arranged on internal layer part（91）Outside, the internal layer part（91）It is made up of metal material, the outer layer part（92） It is made up of elastomeric material, the internal core rod（21）Ring-type is circumferentially provided with to cave inward portion（23）, the depressed part（23）'s Some passages are provided with bar wall（24）, the internal layer part（91）It is stuck in depressed part（23）In, the internal layer part（91）With it is outer Layer part（92）On be provided with and the first installing plate（5）The gas channel that hollow space is communicated.

6. releasable choledochoscope stone extraction basket according to claim 5, it is characterised in that：The outer tube（4）Inside set It is equipped with the rubber keeper of disc-shaped（41）, the keeper（41）On be provided with and supply internal core rod（21）With outer layer bar（22）Pass through Perforation.

7. releasable choledochoscope stone extraction basket according to claim 6, it is characterised in that：First installing plate（5） Opposite sides is provided with the second handle in arcuation（10）.

8. releasable choledochoscope stone extraction basket according to claim 7, it is characterised in that：The internal core rod（21）Upper edge It is axially arranged to have a graduation mark, first installing plate（5）Upper surface is with internal core rod（21）If centered on be circumferentially provided with Dry graduation mark.