CN107224626A

CN107224626A - A kind of device for casting and application thereof

Info

Publication number: CN107224626A
Application number: CN201710350952.XA
Authority: CN
Inventors: 王磊; 崔心刚; 干思舜; 储传敏; 叶剑青; 曲发军; 杨炜; 田毅君; 潘秀武; 张向民
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-05-17
Filing date: 2017-05-17
Publication date: 2017-10-03
Anticipated expiration: 2037-05-17
Also published as: CN107224626B

Abstract

The embodiment of the present application provides a kind of device for casting and application thereof, and for importing a fluid from a fluid provider and being discharged via a fluid drain member, the device includes an accommodating body, and its inside has the accommodating cavity for being used for containing fluid；One plunger assembly, in the accommodating cavity, and can be moved axially inside the accommodating body；One drive component, it connects the plunger assembly, for driving the plunger assembly in axial movement in the accommodating cavity；And the guiding subassembly being respectively communicated with the local interface and remote interface of the fluid provider, the fluid drain member and the accommodating cavity.The device for casting of the application drives the plunger assembly to be moved back and forth in the accommodating cavity by the drive component, so as to realize fluid be continuously introduced into without interruption and with discharge, it is ensured that the continuity of fluid perfusion.

Description

A kind of device for casting and application thereof

Technical field

The application is related to technical field of medical instruments, more particularly to a kind of device for casting and application thereof.

Background technology

With the development of endoscopy, endoscope-assistant surgery goes out successively such as ureteroscope, Flexible ureteroscope, hysteroscope It is existing, and as the chief surgical mode for the treatment of relevant disease.In endoscope-assistant surgery, perfusion equipment need to be connected with hysteroscope, to certainly Liquid is constantly irrigated in right cavity.Intra-bladder instillation has following effect：1. expanding cavity, it is easy into mirror and operation；2. wash away art area Blood, slough tissue and rubble, it is ensured that visual area is clear.

In the operating process of endoscope-assistant surgery, it is ensured that the continuity of perfusion is most important, it should avoid because perfusion interruption is made Interrupted or postoperative complication into the fuzzy operation technique that in turn results in visual area.Further need exist for according to different operation purposes there is provided Different irrigation flows, for example, enter during mirror to need larger irrigation flow to expand cavity to cavity, and rubble process then only will Irrigation flow is asked to ensure that visual area is more clear, it is to avoid calculus is shifted；Different operation equipments are and for example built into hysteroscope, such as Rubble takes stone equipment, causes perfusion channel to diminish, and to ensure that visual area is clear, need to increase irrigation flow.

Therefore, need that one kind can provide continuous perfusion free of discontinuities, ensure operation safety and continuity and groundwater increment can badly The device for casting of control.

The content of the invention

In view of the above problems, the application provides a kind of device for casting and application thereof, overcomes above mentioned problem or at least part Ground solves the above problems.

The embodiment of the present application provides a kind of device for casting, and the device for casting connects a fluid provider and arranged with a fluid respectively Go out part, for importing a fluid from the fluid provider and being discharged via the fluid drain member, it is characterised in that the device for casting Including：

One accommodating body, its inside has the accommodating cavity for being used for containing fluid, in near-end and the distal end difference of the accommodating body It is communicated with the local interface and a remote interface of the accommodating cavity；

One plunger assembly, it is located in the accommodating cavity；

One drive component, it connects the plunger assembly, for driving the plunger assembly axially to be moved in the accommodating cavity (111) It is dynamic；And

One guiding subassembly, it includes：

One first conducting element, its respectively with the fluid provider, the local interface of the accommodating cavity and the fluid drain member Connection；

One second conducting element, its respectively with the fluid provider, the remote interface of the accommodating cavity and the fluid drain member Connection；Wherein,

When the drive component drives the plunger assembly from the movement of the proximate of the accommodating cavity, first conducting element from The fluid provider imports the fluid, and the fluid is directed into the accommodating cavity via the local interface, meanwhile, this second is led Stream part receives the derived fluid of accommodating cavity institute via the remote interface, and the fluid is discharged via the fluid drain member； When the drive component drives the plunger assembly to be moved proximally to from the distal end of the accommodating cavity, second conducting element is carried from the fluid Import the fluid for device, and the fluid be directed into the accommodating cavity via the remote interface, meanwhile, first conducting element via The local interface receives the derived fluid of accommodating cavity institute, and the fluid is discharged via the fluid drain member.

Alternatively, first conducting element also has a first interface, a second interface and a first discharge port, to pass through The first interface is connected with the fluid provider, is connected by the second interface with the local interface of the accommodating cavity, and pass through this First discharge port is connected with the fluid drain member, and second conducting element also has one the 3rd interface, one the 4th interface and one the Two outlets, to be connected by the 3rd interface with the fluid provider, are connect by the distal end of the 4th interface and the accommodating cavity Mouth connection, and connected by second outlet with the fluid drain member.

Alternatively, the first interface, the first discharge port, the 3rd interface and second outlet are unidirectional valve knot Structure.

Alternatively, the plunger assembly also includes a reciprocating piston and connects the connecting rod of the reciprocating piston, and this is reciprocal The outer rim of formula piston is brought into close contact the inner wall in the accommodating cavity, with the first chamber for being internally formed vacuum of the accommodating cavity The reciprocating piston can be driven with the connecting rod in this with the internal capacity of a second chamber, and the first chamber and the second chamber Axial movement in accommodating cavity and relative expand or shrink.

Alternatively, the accommodating body (11,21) is tubular column shape.

Alternatively, the near-end of the accommodating body (11,21) also has an at least partly dismountable proximal, side wall.

Alternatively, should by promoting in being additionally provided with an elastic component on the connecting rod (134,234) of the drive component (15,25) Connecting rod (134,234) is so that elastic component compression simultaneously drives the plunger assembly (13,23) from the near of the accommodating body (11,21) simultaneously Hold mobile to distal end, and by discharging the connecting rod (134,234) to be driven automatically by the screen resilience that the elastic component is provided The distal end of plunger assembly (13,23) from the accommodating body (11,21) is moved proximally to.

Preferably, the elastic component is cone-type spiral structure, and the elastic component is located at the near-end of drive component (15,25) with housing Between the near-end exterior side wall of body (11,21).

Preferably, the minimum one end of the elastic component diameter is located at the near-end of drive component (15,25), and the elastic component diameter is most Big one end is located at the near-end exterior side wall of accommodating body (11,21).

Correspondingly, the embodiment of the present application, which also provides a kind of above-mentioned device for casting, is used for the use of fluid perfusion in unit for endoscope operation On the way.

The embodiment of the present application, which also provides a kind of above-mentioned device for casting, is used for the purposes of fluid perfusion in internal lithotrity.

The embodiment of the present application also provides a kind of device for casting, and the device for casting connects a fluid provider and a fluid respectively Drain member, for importing a fluid from the fluid provider and being discharged via the fluid drain member, it is characterised in that the perfusion is filled Put including：

One accommodating body, its internal one first accommodating cavity and one second accommodating cavity having for containing fluid, the accommodating body Also there is one the 5th interface for connecting first accommodating cavity and one the 6th interface for connecting second accommodating cavity；

One plunger assembly, it includes one the 3rd piston and one the 4th piston and connects the 3rd piston and the 4th piston A connecting rod, the 3rd piston is in first accommodating cavity, and the 4th piston is in second accommodating cavity；

One drive component, it connects the connecting rod, and by driving the connecting rod so that the 3rd piston and the 4th piston Synchronously moved axially respectively in first accommodating cavity and in second accommodating cavity；

One guiding subassembly, it includes：

One first conducting element, its respectively with the fluid provider, the 5th interface of the accommodating body and the fluid drain member Connection；

One second conducting element, its respectively with the fluid provider, the 6th interface of the accommodating body and the fluid drain member Connection；Wherein,

When the drive component drives the connecting rod so that the 3rd piston is synchronous with one first motion state with the 4th piston When being moved axially in first accommodating cavity and second accommodating cavity, first conducting element via the 5th interface this first Derived fluid of accommodating cavity institute, and the fluid is discharged via the fluid drain member, meanwhile, second conducting element is from the fluid Provider imports the fluid, and the fluid is directed into second accommodating cavity via the 6th interface；When the drive component drives Move the connecting rod so that the 3rd piston and the 4th piston with one second motion state be synchronized with first accommodating cavity with this second When being moved axially in accommodating cavity, first conducting element imports the fluid from the fluid provider, and by the fluid via the 5th Interface is directed into first accommodating cavity, meanwhile, second conducting element via the 6th interface, led by second accommodating cavity The fluid gone out, and the fluid is discharged via the fluid drain member.

Alternatively, the accommodating body also has a near-end of the neighbouring drive component and relative to one of near-end distal end, And first accommodating cavity is adjacent to the near-end of the accommodating body, second accommodating cavity is adjacent to the distal end of the accommodating body.

Alternatively, wherein, the side of the near-end of the neighbouring accommodating body of the 5th orifice first accommodating cavity, this The side of the distal end of the neighbouring accommodating body of six orifices, second accommodating cavity, first motion state be the 3rd piston with 4th piston is distally moved axially to the near-end by this, and second motion state be the 3rd piston with the 4th piston by this Near-end moves axially to the distal end.

Alternatively, wherein, the side of the near-end away from the accommodating body of the 5th orifice first accommodating cavity, this Six orifices, second accommodating cavity away from the accommodating body distal end side, first motion state be the 3rd piston with 4th piston moves axially to the distal end by the near-end, and second motion state be the 3rd piston with the 4th piston by this Distal end moves axially to the near-end.

Alternatively, be additionally provided with a potted component between first accommodating cavity and second accommodating cavity, for isolate this first Accommodating cavity and second accommodating cavity.

Alternatively, the accommodating body is additionally provided with a first row stomata, and the first row stomata is adjacent to the potted component and connection should Second accommodating cavity.

Alternatively, one the 3rd steam vent is additionally provided with first accommodating cavity, in being additionally provided with one the 4th in second accommodating cavity Steam vent, wherein, the 3rd steam vent is respectively arranged in first accommodating cavity relative to the 3rd piston with the 5th interface Both sides, the 4th steam vent and the 6th interface are arranged at the both sides relative to the 4th piston in second accommodating cavity.

Alternatively, first accommodating cavity (211) is isolated into two volume phases by potted component with second accommodating cavity (212) Same chamber, and potted component is located between the 3rd piston and the 4th piston.

Alternatively, first conducting element also has a first interface, a second interface and a first discharge port, to pass through The first interface is connected with the fluid provider, by the second interface and the 5th orifice of first accommodating cavity, and is led to The first discharge port is crossed to connect with the fluid drain member, second conducting element also have one the 3rd interface, one the 4th interface and One second outlet, to be connected by the 3rd interface with the fluid provider, passes through the 4th interface and second accommodating cavity The 6th orifice, and connected by second outlet with the fluid drain member.

Alternatively, the accommodating body is tubular column shape.

Alternatively, the near-end of the accommodating body also has an at least partly dismountable proximal, side wall.

Alternatively, in being additionally provided with an elastic component on the connecting rod of the drive component, by promoting the connecting rod so that the elastic component Compress and drive the plunger assembly to be moved from the proximate of the accommodating body simultaneously, and by discharging the connecting rod with by the bullet Screen resilience that property part is provided and drive the plunger assembly to be moved proximally to from the distal end of the accommodating body automatically.

On the other hand, the application, which also provides a kind of above-mentioned device for casting, is used for the purposes of fluid perfusion in unit for endoscope operation.

Another aspect, the application, which also provides a kind of above-mentioned device for casting, is used for the purposes of fluid perfusion in internal lithotrity.

From above technical scheme, the present invention includes relative to the advantage of prior art：

1. prior art is used in general syringe filling process, the fluid in syringe is fully advanced chamber by user , it is necessary to the syringe or extract current injector out that another fills fluid be changed, from fluid container after in mirror or body cavities Middle withdrawn fluid, then the fluid in syringe is injected in hysteroscope or body cavities, change syringe or take out syringe again Take fluid that perfusion can be caused to interrupt, influence operation technique, and then have impact on the accuracy of operation, extend operating time, even The operation risk brought, bubble, bubble reflecting cavity mirror are formed in addition, frequently changing syringe and can force air into body cavities The light of cold light source, influences operation technique.

And the application by syringe by being improved to enclosed construction, and the local interface on enclosed construction by accommodating cavity Connected respectively with the first guiding subassembly and the second guiding subassembly with remote interface so that plunger assembly is reciprocal inside enclosed construction During motion, fluid is continuously discharged enclosed construction by the first guiding subassembly and/or the second guiding subassembly, i.e., no matter promoting plunger assembly Still plunger assembly is pulled to be moved to closed vessel near-end to accommodating cavity distal end is mobile, it is possible to achieve fluid is continuously led without interruption Enter and with discharge, fluid just can be continuously filled into hysteroscope or body cavities.User promotes and pulled plunger manual While, the pressure in body cavities can be perceived, fluid flow is adjusted at any time, the controllability and accuracy of perfusion is realized.

2. the application in the first interface of the first guiding subassembly and the second guiding subassembly, first discharge port, the 3rd by connecing Mouth and the second outlet are respectively equipped with unidirectional valve, by selectively turning on the flap valves different with closing so that fluid continues Flow into and out accommodating body.In addition, the application using a piston and cylinder in accommodating body in a space by being moved Plunger assembly, or using two pistons, accommodating body is isolated into by two spaces by potted component, the push and pull of plunger assembly is all It can realize that fluid continuously discharges enclosed construction.

Brief description of the drawings

, below will be to embodiment or existing in order to illustrate more clearly of the embodiment of the present application or technical scheme of the prior art There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this Apply for some embodiments described in embodiment, for those of ordinary skill in the art, can also be obtained according to these accompanying drawings Obtain other accompanying drawings.

Fig. 1 is a kind of stereogram of the first embodiment of device for casting of the application；

Fig. 2 is a kind of sectional view of the first embodiment of device for casting of the application；

Fig. 3 is a kind of top view of the first embodiment of device for casting of the application；

Fig. 4 is the stereogram of the embodiment of the conducting element of the application first and the second conducting element；

Fig. 5 is the schematic diagram of the embodiment of state when plunger assembly in Fig. 1 is moved proximally to by the distal end of accommodating body；

Fig. 6 is the sectional view of the embodiment of the application unidirectional valve one；

Fig. 7 is side view of Fig. 6 embodiment of unidirectional valve one along A-A；

Fig. 8 is a kind of stereogram of the second embodiment of device for casting of the application；

Fig. 9 is a kind of schematic diagram of the second embodiment of device for casting of the application；

Figure 10 is the schematic diagram of the embodiment of state when plunger assembly in Fig. 9 is moved proximally to by the distal end of accommodating body；

Figure 11 is a kind of schematic diagram of the 3rd embodiment of device for casting of the application；

Figure 12 is the schematic diagram of the embodiment of state when plunger assembly in Figure 11 is moved proximally to by the distal end of accommodating body；

Figure 13 is a kind of schematic diagram of the embodiment of the elastic component of device for casting of the application.

Element numbers

The outlet of 1,2 device for casting 1723,2,722 second

The reciprocating piston of 3 fluid provider 131

The first chamber of 4 fluid drain member 114

The second chamber of 11,21 accommodating body 115

The connecting rod of 13,23 plunger assembly 134,234

The first row stomata of 15,25 drive component 215

The potted component of 17,27 guiding subassembly 210

The accommodating cavity of 171,271 first conducting element 211 first

The accommodating cavity of 172,272 second conducting element 212 second

The piston of 111 accommodating cavity 231 the 3rd

The piston of 112 local interface 232 the 4th

The interface of 113 remote interface 213 the 5th

The interface of 1711,2711 first interface 214 the 6th

The steam vent of 1712,2712 second interface 216 the 3rd

The steam vent of 1713,2713 first discharge port 217 the 4th

1721,2721 the 3rd interfaces 18,28 elastic components

The fluid issuing of 1722,2722 the 4th interface 41

The interface of 31 fluid inlet 42,43

The unidirectional valve structure of 32,33 mozzle 174

The cross structure of 1741 hemispherical valve 1742

Embodiment

The conventional intra-bladder instillation mode of current surgical clinical, by taking Urology Surgery as an example, mainly there is two kinds：

Charge pump is irrigated, and it uses automatic control technology, and the pressure of perfusion is controlled by pressure sensor, and can be in panel Upper setting or display irrigation flow, the perfusion manifold pressure upper limit, the actual pressure irrigated in pipeline.Its advantage is can continuously certainly Dynamicization is irrigated, but has the disadvantage that groundwater increment is larger, it is impossible to irrigated in art according to concrete operations and the timely intense adjustment of visual area situation Flow, and postoperative complication is more.

Manual injection device is irrigated, because being irrigated using hysteroscope charge pump, postoperative complications are more, and many clinical centers are used Syringe, i.e., be connected by manual injection device perfusion with hysteroscope, and assistant coordinates the perfusion of operator doctor manual injection device in art.Its is excellent Point is, with good controllability, can finely to adjust irrigation flow in time according to visual area and concrete operations, and pass through injection Device perfusion can perceive injection pressure, it is to avoid chamber pressure is too high, has the disadvantage continuously to note because syringe need to draw water repeatedly Need frequently to change another syringe for filling fluid in water, filling process, or current injector is extracted out, from fluid container Middle withdrawn fluid, then the fluid in syringe is injected in hysteroscope or body cavities, change syringe or take out syringe again Take fluid that perfusion can be caused to interrupt, influence operation technique, and then have impact on the accuracy of operation, extend operating time, even The operation risk brought, in addition, changing syringe can force air into body cavities, the light of bubble meeting reflecting cavity mirror cold light source Line, influences operation technique.

The application passes through on enclosed construction at least two interfaces and fluid by the way that syringe is improved into enclosed construction Communication apparatus is connected so that fluid connecting device is continuous by fluid discharge closing knot when plunger is moved back and forth inside enclosed construction Structure, so as to realize the continuous pouring of fluid and the controllability of perfusion simultaneously.

Certainly, implementing any technical scheme of the embodiment of the present application does not need necessarily while reaching all excellent of the above Point.

In order that those skilled in the art more fully understand the technical scheme in the embodiment of the present application, below in conjunction with the application Accompanying drawing in embodiment, the technical scheme in the embodiment of the present application is clearly and completely described, it is clear that described reality It is only a part of embodiment of the embodiment of the present application to apply example, rather than whole embodiments.Based on the implementation in the embodiment of the present application Example, the every other embodiment that those of ordinary skill in the art are obtained should all belong to the scope of the embodiment of the present application protection.

Term

" accommodating body " is not necessarily fully sealed, the proximal, side wall of such as accommodating body is that have through hole to pass through post for this Plug assembly, the proximal, side wall of plunger and container forms overall sealing structure.Proximally and distally being respectively equipped with again for container connects Mouthful, container and outflow container are optionally flowed into for fluid.Selectively, the proximal, side wall of the accommodating body at least partly may be used also To dismantle.

Being somebody's turn to do " fluid " includes liquids and gases, and liquid includes, but are not limited to water, physiological saline, decoction etc..

It is somebody's turn to do " near-end of accommodating cavity ", " near-end of accommodating body " refer to the close drive component of accommodating cavity or accommodating body one End；Conversely, " distal end of accommodating cavity ", " distal end of accommodating body " refer to one end of the remote drive component of accommodating cavity and accommodating body.

Being somebody's turn to do " near-end of connecting rod ", " near-end of drive component " refers to connecting rod or drive component close to outer point of force application (for example Hand propelled is pulled dynamic) one end；Conversely, " distal end of connecting rod ", " distal end of drive component " refer to that connecting rod or drive component are remote From one end of outer point of force application (such as hand propelled or pull dynamic).

Further illustrate that the embodiment of the present application is implemented with reference to the embodiment of the present application accompanying drawing.

Referring to Fig. 1-3, in the application one in the specific implementation, the fluid filling device (1) connects a fluid provider respectively (3) with a fluid drain member (4), for importing a fluid from the fluid provider (3) and being arranged via the fluid drain member (4) Go out, as illustrated, the device for casting (1) includes：

One accommodating body (11), its internal accommodating cavity (111) having for containing fluid, in the near of the accommodating body (11) Hold and the local interface (112) and a remote interface (113) that connect the accommodating cavity (111) are respectively equipped with distal end.

One plunger assembly (13), it is located in the accommodating cavity (111).

One drive component (15), it connects the plunger assembly (13), for driving the plunger assembly (13) in the accommodating cavity (111) moved axially in.

One guiding subassembly (17) includes one first conducting element (171) and one second conducting element (173), first conducting element (171) connected respectively with the fluid provider (3), the local interface (112) of the accommodating cavity and the fluid drain member (4)；Should Second conducting element (172) respectively with the fluid provider (3), the remote interface (113) of the accommodating cavity and the fluid drain member (4) connect.Specifically, first conducting element (171) also have a first interface (1711), a second interface (1712) and One first discharge port (1713), to be connected by the first interface (1711) with the fluid provider (3), passes through the second interface (1712) connect, and discharged by the first discharge port (1713) and the fluid with the local interface (112) of the accommodating cavity (111) Part (4) is connected, and second conducting element (172) also has one the 3rd interface (1721), one the 4th interface (1722) and one second Outlet (1723), to be connected by the 3rd interface (1721) with the fluid provider (3), passes through the 4th interface (1722) Connected with the remote interface (113) of the accommodating cavity (111), and pass through second outlet (1723) and the fluid drain member (4) Connection.

Preferably, the first interface (1711), the first discharge port (1713), the 3rd interface (1721) and this second Outlet (1723) is unidirectional valve structure, but is not limited thereto, and it can also be the structure design of one-way cock.

As shown in Figure 6 and Figure 7, in the embodiment of the application one, unidirectional valve structure (174) includes a hemispherical valve (1741), the edge thickness of the maximum gauge of the hemispherical valve (1741) is more slightly larger than the thickness of other parts, and the hemisphere It is close to first interface (1711), first discharge port (1713), the 3rd interface in the edge of the maximum gauge of shape valve (1741) (1721) or on the tube wall of the second outlet (1723), the highest raised points of hemispherical valve (1741) are fixed on a cross knot On structure (1742), the cross structure (1742) is fixed on first interface (1711), first discharge port (1713), the 3rd interface (1721) it is or on the tube wall of the second outlet (1723) or with tube wall integral type structure.

When fluid flows from the raised direction of hemispherical valve (1741) to the direction of depression, hemispherical valve (1741) The 8FB9 edge for being close to tube wall are rushed to open, and are drawn in axis direction, and fluid passes through.When fluid is recessed from hemispherical valve (1741) Direction to raised direction flow when, the hemispherical valve (1741) of depression partly blocks passing through for fluid.So as to realize The one-way flow of fluid.

In addition, the second interface (1712) can be then the structure design of two-way valve, fluid with the 4th interface (1722) Valve can be flowed through from positive and negative both direction.

As shown in figure 4, the first conducting element (171) and the second conducting element (172) can be three-way pipe structure, in the application one In embodiment, the pipeline and first that the first interface (1711) of the first conducting element (171) is connected with second interface (1712) is discharged Mouth (1713) connection, forms three-way pipe structure；3rd interface (1721) of the second conducting element (172) connects with the 4th interface (1722) Logical pipeline is connected with the second outlet (1723), forms three-way pipe structure.Now, it is preferable that first interface (1711) is relative In first discharge port (1713) further from accommodating cavity (11), the 3rd interface (1721) relative to the second outlet (1723) further from Accommodating cavity (11).The design can realize that fluid enters accommodating cavity (11) by the unidirectional valve of first interface (1711), and Fluid by first interface (1711) from accommodating cavity (11) export when, fluid only passes through the unidirectional valve of first discharge port (1713) Outflow, and the unidirectional valve of first interface (1711) is remained off.3rd interface (1721) and the second outlet (1723) Principle it is identical.

When the drive component (15) drives the plunger assembly (13) from the proximate movement of the accommodating cavity (111), First conducting element (171) imports the fluid from the fluid provider (3), and the fluid is led via the local interface (112) Enter to the accommodating cavity (11), meanwhile, second conducting element (172) receives the accommodating cavity (11) via the remote interface (113) The derived fluid of institute, and the fluid is discharged via the fluid drain member (4)；When the drive component (15) drives the plunger group When the distal end of part (13) from the accommodating cavity (111) is moved proximally to, second conducting element (172) is led from the fluid provider (3) Enter the fluid, and the fluid is directed into the accommodating cavity (111) via the remote interface (113), meanwhile, first conducting element (171) the derived fluid of the accommodating cavity (11) institute is received via the local interface (112), and the fluid is arranged via the fluid Go out part (4) discharge.

Alternatively, the plunger assembly (13) by a reciprocating piston (131) and can connect the reciprocating piston (131) Connecting rod (134) is constituted, and the outer rim of the reciprocating piston (131) is brought into close contact in the inner wall of the accommodating cavity (111), with this The first chamber (114) for being internally formed vacuum of accommodating cavity (111) and a second chamber (115), and the first chamber (114) The reciprocating piston (131) can be driven with the connecting rod (134) in the accommodating cavity with the internal capacity of the second chamber (115) (111) axial movement in and relative expand or shrink.When the inside of the first chamber (114) or the second chamber (115) holds When product expands, the inside of the first chamber (114) or the second chamber (115) is to form a negative pressure, and can be connect via the near-end Mouth (112) or the remote interface (113) suck the fluid in the first chamber (114) or the second chamber (115)；Conversely, When the internal capacity of the first chamber (114) or the second chamber (115) reduces, the first chamber (114) or second chamber The inside of room (115) is to form a malleation, and can by be contained in the first chamber (114) or the second chamber (115) should Fluid is discharged via the local interface (112) or the remote interface (113).

Alternatively, the outer rim of reciprocating piston (131) has a sealing ring (being unillustrated), and the seal ring set is past located at this The outer rim of Dual Piston is simultaneously brought into close contact in the inner edge tube wall of the accommodating cavity (111).

Alternatively, connecting rod (134) can be conventional wire, can also include at least three blades, and the blade is along post The radial and axial extension of body.

It should be noted that the example of the above-mentioned material and shape for being only cylinder, the material and shape of cylinder do not add To limit.

The grip part gripped for operator also can be set in one end of the connecting rod (134) of drive component (15), for example, shake hands (draw ring) or other mechanisms.In use, can be promoted by external force (such as the hand strength of people) or the drive component of pulling back (15) piston is driven.

Fluid provider (3) can be shape and structure as shown in Figure 1, and it is provided with a fluid inlet (31), should Fluid inlet (31) can an external fluid container (water bag, medicinal fluid bag).Preferably, the fluid provider (3) is settable two Mozzle (32,33), to connect the first interface (1711) and second conducting element (172) of the first conducting element (171) respectively The 3rd interface (1721).

Fluid drain member (4) can be Straight structure as shown in Figure 1, which is provided with a fluid issuing (41) and Two interfaces (42,43), two interfaces (42,43) connect with first discharge port (1713) and the second outlet (1723) respectively Connect, but be not limited thereto, fluid drain member (4) can also be warp architecture (not shown).Fluid drain member (4) can be connected Endoscope system, such as ureteroscope.Remote interface (113) can be located at any suitable position of accommodating body (11) distal end, Such as axis of remote interface (113) perpendicular to accommodating body (11) axis, or parallel to the axis of accommodating body (11).

It should be noted that the accommodating body (11) could be arranged to tubular column shape, but do not limited with this, other such as squares It is also applicable etc. shape.

Accommodating body (11) can be integral molding, for example, be molded using blow molding technique or other method, accommodating body (11) material can be medical material, such as medical plastic (including high polymer material), glass.Or, the accommodating body (11) near-end also has an at least partly dismountable proximal, side wall.The proximal, side wall of accommodating body (11) refers to close to plunger group Part (13) be attached across for the connecting rod (134) of plunger assembly (13) and connect the reciprocating piston (131) or this first Piston (132) and second piston (133), the diameter of the proximal, side wall can be identical or big with the maximum gauge of plunger assembly (13) Maximum gauge in plunger assembly (13), and can a part or whole part unloading or accommodating body (11) is attached to seal up accommodating body (11) near-end, while also by the part sealing of plunger assembly (13) into accommodating body (11).The purpose of such a design is just It is fitted into accommodating body (11) in plunger assembly (13) or is taken out from accommodating body (11).In addition, when accommodating body (11) and plunger assembly (13) when being unable to one-shot forming in the fabrication process, can by accommodating body (11) and plunger assembly (13) it is separately manufactured after install again Integral structure.The material of proximal, side wall is not limited, and can be plastics, rubber or other materials.

Alternatively, the accommodating body (11) is tubular column shape or other suitable shapes.

The device for casting of the application can realize that one-handed performance, i.e. one hand push or pull on drive component, to realize fluid certainly The lasting outflow of fluid drain member 4.

As illustrated in fig. 1 and 2, the drive component can be for that can accommodate the draw ring of an at least finger, in the near-end of accommodating body The similar draw ring of two diameters also can be set in exterior side wall, in order to which one hand is pushed or pull on.

As shown in figure 13, in be additionally provided with the connecting rod (134) of the drive component (15) elastic component (18), should by promoting Connecting rod (134) is so as to the elastic component (18) compression and drive the plunger assembly (13) from the near-end of the accommodating body (11) to remote simultaneously End movement, and by discharging the connecting rod (134) to drive the plunger automatically by the screen resilience that the elastic component (18) is provided The distal end of component (13) from the accommodating body (11) is moved proximally to.

Preferably, the elastic component (18) it is cone-type spiral structure, the elastic component (18) it is located at the near-end of drive component (15) Between the near-end exterior side wall of accommodating body (11).

Preferably, the elastic component (18) the minimum one end of diameter is located at the near-end of drive component (15), the elastic component (18) The maximum one end of diameter is located at the near-end exterior side wall of accommodating body (11).

The fluid filling device operation principle is as follows：

In an initial condition, the distal end of plunger assembly (13) can be located at near-end or the distal end of accommodating body (11).Work as plunger When the distal end of component (13) is located at the near-end of accommodating body (11), plunger assembly (13) is under external force, interior by accommodating cavity (111) Air by remote interface (113), discharged through the second outlet (1723), while the unidirectional valve at first interface (1711) place Open, fluid enters in accommodating cavity (111) via first interface (1711), second interface (1712) and local interface (112).When The distal end of plunger assembly (13) be located at accommodating body (11) distal end when, plunger assembly (13) under external force, by accommodating cavity (111) air in is discharged by local interface (112) through first discharge port (1713), while the 3rd interface (1721) place Unidirectional valve is opened, and fluid enters accommodating cavity via the 3rd interface (1721), the 4th interface (1722) and remote interface (113) (111) in.

Fig. 1 and Fig. 5 respectively illustrate plunger assembly (13) inactive state and by driving from the remote of accommodating cavity (111) The view of the embodiment of state when end is moved proximally to.

When the drive component (15) drives the distal end of plunger assembly (13) from the accommodating cavity (111) to move proximally to, Second conducting element (172) is via the 3rd interface (1721), the 4th interface (1722) and remote interface (113) from fluid provider (3) direct fluid into first chamber (114), synchronously, first conducting element (171) is received via the local interface (112) The derived fluid of the second chamber (115) institute, and by the fluid by second interface (1712) and first discharge port (1713), Discharged via the fluid drain member (4).

When the drive component (15) drives the plunger assembly (13) from the proximate movement of the accommodating cavity (111), First conducting element (171) is from the fluid provider (3) via first interface (1711), second interface (1712) and local interface (112) direct fluid into the second chamber (115), meanwhile, second conducting element (172) is via the remote interface (113) The derived fluid of the first chamber (114) institute is received, then passes through the 4th interface (1722) and the second outlet (1723), warp Discharged by the fluid drain member (4).

Another in the specific implementation, providing a kind of fluid filling device (2) in the application, the device for casting (2) is connected respectively One fluid provider (3) and a fluid drain member (4), for importing a fluid and via the fluid from the fluid provider (3) Drain member (4) is discharged, and the device for casting (4) includes：

One accommodating body (21), its internal one first accommodating cavity (211) and one second accommodating cavity having for containing fluid (212), the accommodating body (21) also have connect first accommodating cavity (211) one the 5th interface (213) and connect this second One the 6th interface (214) of accommodating cavity (212)；

One plunger assembly (23), it includes one the 3rd piston (231) and one the 4th piston (232) and connects the 3rd work (231) and a connecting rod (234) for the 4th piston (232) are filled in, the 3rd piston (231) is interior located at first accommodating cavity (211), 4th piston (232) is in second accommodating cavity (212)；

One drive component (25), it connects the connecting rod (234), and by driving the connecting rod (234) so that the 3rd piston And the 4th piston (232) is synchronous in first accommodating cavity (211) and in second accommodating cavity (212) (231) Axial movement；

One guiding subassembly (27) includes one first conducting element (271) and one second conducting element (272), first conducting element (271) connect respectively with the fluid provider (3), the 5th interface (213) of the accommodating body (21) and the fluid drain member (4) It is logical；Second conducting element (272) respectively with the fluid provider (3), the 6th interface (214) and the stream of the accommodating body (21) Body drain member (4) is connected；In specific embodiment, first conducting element (271) also has a first interface (2711), one the Two interfaces (2712) and a first discharge port (2713), to be connected by the first interface (2711) and the fluid provider (3) It is logical, connected by the second interface (2712) with the 5th interface (213) of first accommodating cavity (211), and pass through the first row Outlet (2713) is connected with the fluid drain member (4), and second conducting element (272) is also with one the 3rd interface (2721), one the Four interfaces (2722) and one second outlet (2723), to be connected by the 3rd interface (2721) and the fluid provider (3) It is logical, connected by the 4th interface (2722) with the 6th interface (214) of second accommodating cavity (212), and pass through the second row Outlet (2723) is connected with the fluid drain member (4).

When the drive component (25) drive the connecting rod (234) so that the 3rd piston (231) and the 4th piston (232) with One first motion state is synchronized with when being moved axially in first accommodating cavity (211) and second accommodating cavity (212), and this first is led Stream part (271) receives the derived fluid of first accommodating cavity (211) institute via the 5th interface (213), and the fluid is passed through Discharged by the fluid drain member (4), meanwhile, second conducting element (272) imports the fluid from the fluid provider (3), and will The fluid is directed into second accommodating cavity (212) via the 6th interface (214)；When the drive component (25) drives the connecting rod (234) so that the 3rd piston (231) is synchronized with first accommodating cavity with the 4th piston (232) with one second motion state (211) when with being moved axially in second accommodating cavity (212), first conducting element (271) imports the stream from the fluid provider Body, and the fluid is directed into first accommodating cavity (211) via the 5th interface (213), meanwhile, second conducting element (272) the derived fluid of second accommodating cavity (212) institute is received via the 6th interface (214), and by the fluid via this Fluid drain member (4) is discharged.

Specifically, the accommodating body (21) also has a near-end of the neighbouring drive component (25) and relative to the near-end One of distal end, and first accommodating cavity (211) is adjacent to the near-end of the accommodating body (21), and second accommodating cavity (212) is adjacent to The distal end of the accommodating body (21).

As the interfaces of Fig. 8-9, the five (213) connect the near-end of the neighbouring accommodating body (21) of first accommodating cavity (211) Side, the 6th interface (214) connects the side of the distal end of the neighbouring accommodating body (21) of second accommodating cavity (212) (i.e. 5th interface (213) is respectively arranged at the both sides similar to the accommodating body 21 shown in Fig. 1 with the 6th interface (214)), this first Motion state is that the 3rd piston (231) and the 4th piston (232) are distally moved axially to the near-end by this, and second fortune Dynamic state is that the 3rd piston (231) moves axially to the distal end with the 4th piston (232) by the near-end.

Preferably, the first interface (2711), the first discharge port (2713), the 3rd interface (2721) and this second Outlet (2723) is unidirectional valve structure or one-way cock structure.

Preferably, a potted component (210) is additionally provided between first accommodating cavity (211) and second accommodating cavity (212), For isolating first accommodating cavity (211) and second accommodating cavity (212).Preferably, potted component (210) first houses this Chamber (211) is isolated into two volume identical chambers with second accommodating cavity (212).

Preferably, the accommodating body (21) is additionally provided with a first row stomata (215), and the first row stomata (215) is close adjacent to this Envelope element (210) simultaneously connects second accommodating cavity (212).

First row stomata (215) is provided with one-way cock, and first row stomata (215) is used to discharge the first accommodating cavity (211) Or be closed after the second air in accommodating cavity (212).

Preferably, the potted component (210) has a breach, first row stomata towards the part of the 4th piston (232) (215) it is located at the underface of the breach.

The operation principle of device for casting (21) is as follows：

In an initial condition, first can be by driving the plunger assembly (23) to be housed in the first accommodating cavity (211) with first The interior axial reciprocating movement of chamber (212), and by the air in the first accommodating cavity (211) by the 5th interface (213) and via first Outlet (2713) is discharged, and the air in the second accommodating cavity (212) is discharged by first row stomata (215).

First motion state is that the 3rd piston (231) distally moves axially to this with the 4th piston (232) by this Near-end, and to be that the 3rd piston (231) with the 4th piston (232) moves axially to this by the near-end remote for second motion state End.

As shown in figs. 9-10, when practical operation, when the drive component (25) drives the plunger assembly (23) by accommodating body (11) when distal end is moved proximally to, the second conducting element (272) receives fluid provider (3) via the 3rd interface (2721) and provided Fluid, and directed fluid into via the 4th interface (2722) and the 6th interface (214) in the second accommodating cavity (212)；Synchronously, First conducting element (271) receives the derived fluid of the first accommodating cavity (211) institute via the 5th interface (213), and by the fluid By second interface (2712) and first discharge port (2713), discharged via the fluid drain member (4).

When plunger assembly (23) by accommodating body (11) proximate move axially when, the first conducting element (271) via First interface (2711) receives the fluid that fluid provider (3) is provided, and via second interface (2712) and the 5th interface (213) Direct fluid into the first accommodating cavity (211)；Synchronously, the second conducting element (272) receives second via the 6th interface (214) and held The derived fluid of chamber (212) institute is put, and by the fluid by the 4th interface (2722) and the second outlet (2723), via this Fluid drain member (4) is discharged.

The present embodiment employs the structure of two pistons, when the drive component (25) drives the plunger assembly (23) by housing When the distal end of body (21) is moved proximally to, the second accommodating cavity (212) is in vacuum state, and due to underbalance effect, fluid can be automatic Ground is imported in the second accommodating cavity (212) by the second conducting element (272), thus promotes drive component (25) to the near of accommodating body (21) End movement, now, user need not exert oneself, or only need to apply the i.e. achievable fluid of fraction of external force to the second accommodating cavity (212) export of importing and fluid from the first accommodating cavity (211).At the same time, the fluid in the first accommodating cavity (211) by Gradually discharge, until emptying, after emptying, forms vacuum, fluid can be automatically by the first conducting element in the first accommodating cavity (211) (271) import in the first accommodating cavity (211), so as to promote drive component (25) by the proximate axial direction of accommodating body (21) Mobile, user need not exert oneself, or only need to apply the i.e. achievable fluid of fraction of external force to the first accommodating cavity (211) Import and fluid is from the export of the second accommodating cavity (212).

Figure 11 and Figure 12 show another specific embodiment, and the 5th interface (213) connects first accommodating cavity (211) The side of near-end away from the accommodating body (21), the 6th interface (214) connects being housed away from this for second accommodating cavity (212) (as shown in Figure 8 and Figure 9, i.e. the 5th interface (213) is respectively arranged at this with the 6th interface (214) for the side of the distal end of body (21) Accommodating body 21 is close to middle part), first motion state is the 3rd piston (231) and the 4th piston (232) by this Distal end moves axially to the near-end, and second motion state be the 3rd piston (231) with the 4th piston (232) by the near-end Move axially to the distal end.

Preferably, one the 3rd steam vent (216) is additionally provided with first accommodating cavity (211) and/or second is housed in this One the 4th steam vent (217) is additionally provided with chamber (212), wherein, the 3rd steam vent (216) and the 5th interface (213) difference Be arranged at the both sides relative to the 3rd piston (231) in first accommodating cavity (211), the 4th steam vent (217) with this Six interfaces (214) are arranged at the both sides relative to the 4th piston (232) in second accommodating cavity (212).To assist discharge the Air in two accommodating cavities (219) and the first accommodating cavity (218).

3rd steam vent (216) and the 4th steam vent (217) are equipped with one-way cock, and the 3rd steam vent (216) and I.e. in closing after air of four steam vents (217) in for the first accommodating cavity of discharge (211) and the second accommodating cavity (212) State.

Alternatively, a potted component (210) is additionally provided between first accommodating cavity (211) and second accommodating cavity (212), For isolating first accommodating cavity (211) and second accommodating cavity (212).

Alternatively, first accommodating cavity (211) and second accommodating cavity (212) are isolated into two by potted component (210) Volume identical chamber, and potted component (210) is located between the 3rd piston (231) and the 4th piston (232).

Below by the (the i.e. the 5th by taking the design structure of the device for casting (21) of the embodiment shown in Figure 11 and Figure 12 as an example Interface (213) connects the side of the near-end away from the accommodating body (21) of first accommodating cavity (211), the 6th interface (214) Connect the side of the distal end away from the accommodating body (21) of second accommodating cavity (212)), illustrate that the work of device for casting (21) is former Reason：

In an initial condition, first can be by driving the plunger assembly (23) to be housed in the first accommodating cavity (211) with first The interior axial reciprocating movement of chamber (212), and by the air in the first accommodating cavity (211) by the 5th interface (213) and via first Outlet (2713) is discharged, or is discharged by the 3rd steam vent (216), and the air in the second accommodating cavity (212) is led to Cross the 6th interface (214) and discharged via the second outlet (2723), or discharged by the 4th steam vent (217).

When practical operation, when the drive component (25) drives the plunger assembly (23) from the distal end of accommodating body (21) near When end is mobile, the fluid that the second conducting element (272) is provided via the 3rd interface (2721) reception fluid provider (3), and via 4th interface (2722) and the 6th interface (214) are directed fluid into the second accommodating cavity (212)；Synchronously, the first conducting element (271) the derived fluid of the first accommodating cavity (211) institute is received via the 5th interface (213), and the fluid is connect by second Mouth (2712) and first discharge port (2713), are discharged via the fluid drain member (4).When plunger assembly (23) is by accommodating body (21) Proximate axial movement when, the first conducting element (271) via first interface (2711) receive fluid provider (3) provide Fluid, and directed fluid into via second interface (2712) and the 5th interface (213) in the first accommodating cavity (211)；Synchronously, Second conducting element (272) receives the derived fluid of the second accommodating cavity (212) institute via the 6th interface (214), and by the fluid By the 4th interface (2722) and the second outlet (2723), discharged via the fluid drain member (4).

It should be noted that the quantity of the piston included by plunger assembly is not limited to one and two in above-described embodiment It is individual or 3 or more.When the quantity of piston is 3 or more, the setting of guiding subassembly and relevant interface can With identical with the embodiment of the present application, or increase interface and/or potted component quantity.

Alternatively, the accommodating body is tubular column shape or other suitable shapes.

In being additionally provided with an elastic component (28) on the connecting rod (234) of the drive component (25), by promote the connecting rod (234) with The elastic component is set to compress and while drive the plunger assembly (23) to be moved from the proximate of the accommodating body (21), and by releasing The connecting rod (234) is put to drive the plunger assembly (23) automatically from the accommodating body by the screen resilience that the elastic component is provided (21) distal end is moved proximally to.

As shown in figure 13, it is preferable that the elastic component (28) it is cone-type spiral structure, the elastic component (28) it is located at drive component (25) between near-end and the near-end exterior side wall of accommodating body (21).

Preferably, the elastic component (28) the minimum one end of diameter is located at the near-end of drive component (25), the elastic component (28) The maximum one end of diameter is located at the near-end exterior side wall of accommodating body (21).

During the device for casting one-handed performance of the application, it is limited, example to pull amplitude that is dynamic or promoting drive component (25) It is such as 10cm, to the fluid in accommodating body (21) is completely exhausted out, accordingly, it is desirable to by the length of connecting rod of plunger assembly (23) Be also configured as 10cm or so, and if elastic component (28) farthest compression when cause the near-end and accommodating body of drive component (25) (21) the distance between near-end exterior side wall is more than 0, and the physical length of connecting rod will be less than 10cm, pulls dynamic or promotion driving group When drivening rod is moved during part (25), the fluid in accommodating body (21) cannot be completely exhausted out.If therefore in design, increase connects The length of bar, then the length increase of connecting rod, which will increase, pulls difficulty that is dynamic or promoting drive component (25).

In the embodiment of the present application, when drive component (25) drive the plunger assembly (23) from the near-end of the accommodating body (21) to When distal end is mobile, elastic component (28) compressed, due to the elastic component (28) it is cone-type spiral structure, during compression, the bullet compressed Property part (28) be gradually crushed, while the small annulus of the diameter annulus big with diameter is not stacked each other, so that driving The distance between the near-end of component (25) and the near-end exterior side wall of accommodating body (21) minimum are approached in 0.And if elastic component (28) be common shape, such as cylindrical helical structure, elastic component (28) when being compressed, multilayer annulus is stacked, and causes drive component (25) the distance between near-end and near-end exterior side wall of accommodating body (21) are much larger than 0.

The application, which also provides a kind of above-mentioned fluid filling device, is used for the purposes of fluid perfusion in unit for endoscope operation.The inner chamber Videoendoscopic surgery includes, but are not limited to using the hysteroscope in ureteroscope, Flexible ureteroscope, hysteroscope and other human bodies or animal body Operation.

The application, which also provides a kind of above-mentioned fluid filling device, is used for the purposes of fluid perfusion in internal lithotrity.The rubble Art includes, but are not limited to the rubble operation of kidney stone, ureteral calculi, gall stone and other human bodies or animal calculi in vivo.

Finally it should be noted that：Above example is only limited to the technical scheme for illustrating the embodiment of the present application, rather than to it System；Although the application is described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：Its The technical scheme described in foregoing embodiments can still be modified, or which part technical characteristic is equal Replace；And these modifications or replacement, the essence of appropriate technical solution is departed from each embodiment technical scheme of the application Spirit and scope.

Claims

1. a kind of device for casting (1), connects a fluid provider (3) and a fluid drain member (4), for being carried from the fluid respectively A fluid is imported for device (3) and is discharged via the fluid drain member (4), it is characterised in that the device for casting (1) includes：

One accommodating body (11), it is internal to have the accommodating cavity (111) for being used for containing fluid, in the accommodating body (11) near-end with Distal end is respectively equipped with the local interface (112) and a remote interface (113) for connecting the accommodating cavity (111)；

One plunger assembly (13), it is located in the accommodating cavity (111)；

One drive component (15), it connects the plunger assembly (13), for driving the plunger assembly (13) in the accommodating cavity (111) Interior axial movement；And

One guiding subassembly (17), it includes：

One first conducting element (171), its respectively with the fluid provider (3), the local interface (112) and the stream of the accommodating cavity Body drain member (4) is connected；

One second conducting element (172), its respectively with the fluid provider (3), the remote interface (113) and the stream of the accommodating cavity Body drain member (4) is connected；Wherein,

When the drive component (15) drives the plunger assembly (13) from the movement of the proximate of the accommodating cavity (111), this One conducting element (171) imports the fluid from the fluid provider (3), and the fluid is directed into via the local interface (112) In the accommodating cavity (11), meanwhile, second conducting element (172) receives the accommodating cavity (11) via the remote interface (113) and led The fluid gone out, and the fluid is discharged via the fluid drain member (4)；When the drive component (15) drives the plunger assembly (13) when being moved proximally to from the distal end of the accommodating cavity (111), second conducting element (172) is imported from the fluid provider (3) The fluid, and the fluid is directed into the accommodating cavity (111) via the remote interface (113), meanwhile, first conducting element (171) the derived fluid of the accommodating cavity (11) institute is received via the local interface (112), and the fluid is arranged via the fluid Go out part (4) discharge.

2. device for casting according to claim 1, it is characterised in that first conducting element (171) also has one first to connect Mouth (1711), a second interface (1712) and a first discharge port (1713), to pass through the first interface (1711) and the stream Body provider (3) is connected, and is connected by the second interface (1712) with the local interface (112) of the accommodating cavity (111), and pass through The first discharge port (1713) is connected with the fluid drain member (4), and second conducting element (172) also has one the 3rd interface (1721), one the 4th interface (1722) and one second outlet (1723), to pass through the 3rd interface (1721) and the fluid Provider (3) is connected, and is connected by the 4th interface (1722) with the remote interface (113) of the accommodating cavity (111), and pass through this Second outlet (1723) is connected with the fluid drain member (4).

3. device for casting according to claim 2, it is characterised in that first interface (1711), the first discharge port (1713), the 3rd interface (1721) and second outlet (1723) are unidirectional valve structure.

4. device for casting according to claim 1, it is characterised in that the plunger assembly (13) also includes a reciprocating piston (131) and the connecting rod (134) of the reciprocating piston (131) is connected, the outer rim of the reciprocating piston (131) is brought into close contact in this The inner wall of accommodating cavity (111), with the first chamber (114) and one second for being internally formed vacuum of the accommodating cavity (111) Chamber (115), and the internal capacity of the first chamber (114) and the second chamber (115) can drive this past with the connecting rod (134) Dual Piston (131) is expanded or shunk relatively in the axial movement in the accommodating cavity (111).

5. a kind of device for casting (2), connects a fluid provider (3) and a fluid drain member (4), for being carried from the fluid respectively A fluid is imported for device (3) and is discharged via the fluid drain member (4), it is characterised in that the device for casting (4) includes：

One plunger assembly (23), it includes one the 3rd piston (231) and one the 4th piston (232) and connects the 3rd piston (231) with a connecting rod (234) for the 4th piston (232), the 3rd piston (231), should in first accommodating cavity (211) 4th piston (232) is in second accommodating cavity (212)；

One drive component (25), it connects the connecting rod (234), and by driving the connecting rod (234) so that the 3rd piston (231) And the 4th piston (232) synchronous in first accommodating cavity (211) and in second accommodating cavity (212) axially move It is dynamic；

One guiding subassembly (27), it includes：

One first conducting element (271), its respectively with the fluid provider (3), the 5th interface (213) and the stream of the accommodating body Body drain member (4) is connected；

One second conducting element (272), its respectively with the fluid provider (3), the 6th interface (214) and the stream of the accommodating body Body drain member (4) is connected；Wherein,

When the drive component (25) drives the connecting rod (234) so that the 3rd piston (231) and the 4th piston (232) are with one the When one motion state is synchronized with first accommodating cavity (211) with being moved axially in second accommodating cavity (212), first conducting element (271) the derived fluid of first accommodating cavity (211) institute is received via the 5th interface (213), and by the fluid via this Fluid drain member (4) is discharged, meanwhile, second conducting element (272) imports the fluid from the fluid provider (3), and this is flowed Body is directed into second accommodating cavity (212) via the 6th interface (214)；When the drive component (25) drives the connecting rod (234) so that the 3rd piston (231) is synchronized with first accommodating cavity with the 4th piston (232) with one second motion state (211) when with being moved axially in second accommodating cavity (212), first conducting element (271) imports the stream from the fluid provider Body, and the fluid is directed into first accommodating cavity (211) via the 5th interface (213), meanwhile, second conducting element (272) the derived fluid of second accommodating cavity (212) institute is received via the 6th interface (214), and by the fluid via this Fluid drain member (4) is discharged.

6. device for casting according to claim 5, it is characterised in that the accommodating body also has the one of the neighbouring drive component Near-end and relative to one of near-end distal end, and first accommodating cavity is adjacent to the near-end of the accommodating body, second accommodating cavity It is adjacent to the distal end of the accommodating body.

7. device for casting according to claim 6, it is characterised in that wherein, the 5th orifice first accommodating cavity The neighbouring accommodating body near-end side, the one of the distal end of the neighbouring accommodating body of the 6th orifice second accommodating cavity Side, first motion state is that the 3rd piston (231) is distally moved axially to the near-end by this with the 4th piston (232), And second motion state moves axially to the distal end for the 3rd piston (231) and the 4th piston (232) by the near-end.

8. device for casting according to claim 6, it is characterised in that wherein, the 5th orifice first accommodating cavity The near-end away from the accommodating body side, the one of the distal end away from the accommodating body of the 6th orifice second accommodating cavity Side, first motion state is that the 3rd piston (231) moves axially to the distal end with the 4th piston (232) by the near-end, And second motion state is distally moved axially to the near-end by this for the 3rd piston (231) and the 4th piston (232).

9. device for casting according to claim 5, it is characterised in that first accommodating cavity (211) and second accommodating cavity (212) potted component (210) is additionally provided between, for isolating first accommodating cavity (211) and second accommodating cavity (212).

10. device for casting according to claim 9, it is characterised in that the accommodating body (21) is additionally provided with a first row stomata (215), the first row stomata (215) is adjacent to the potted component (210) and connects second accommodating cavity.

11. device for casting according to claim 5, it is characterised in that be additionally provided with one the 3rd in first accommodating cavity (211) Steam vent (216), is additionally provided with one the 4th steam vent (217) in second accommodating cavity (212), wherein, the 3rd steam vent (216) it is respectively arranged at the 5th interface (213) in first accommodating cavity (211) relative to the two of the 3rd piston (231) Side, the 4th steam vent (217) is arranged in second accommodating cavity (212) with the 6th interface (214) and lived relative to the 4th Fill in the both sides of (232).

12. device for casting according to claim 11, it is characterised in that first accommodating cavity (211) second is housed with this A potted component (210) is additionally provided between chamber (212), for isolating first accommodating cavity (211) and second accommodating cavity (212)。

13. the device for casting according to claim 9,10 or 12, it is characterised in that potted component (210) first holds this Put chamber (211) and second accommodating cavity (212) and be isolated into two volume identical chambers, and potted component (210) located at this Between three pistons (231) and the 4th piston (232).

14. device for casting according to claim 5, it is characterised in that first conducting element (271) also has one first to connect Mouth (2711), a second interface (2712) and a first discharge port (2713), to pass through the first interface (2711) and the stream Body provider (3) is connected, and is connected by the second interface (2712) with the 5th interface (213) of first accommodating cavity (211), and Connected by the first discharge port (2713) with the fluid drain member (4), second conducting element (272) also has one the 3rd interface (2721), one the 4th interface (2722) and one second outlet (2723), to pass through the 3rd interface (2721) and the fluid Provider (3) is connected, and is connected by the 4th interface (2722) with the 6th interface (214) of second accommodating cavity (212), and lead to Second outlet (2723) is crossed to connect with the fluid drain member (4).

15. device for casting according to claim 14, it is characterised in that first interface (2711), the first discharge port (2713), the 3rd interface (2721) and second outlet (2723) are unidirectional valve structure.

16. device for casting according to claim 1 or 5, it is characterised in that the accommodating body (11,21) is tubular column shape.

17. device for casting according to claim 1 or 5, the near-end of the accommodating body (11,21) also has at least partly removable The proximal, side wall unloaded.

18. device for casting according to claim 1 or 5, it is characterised in that in the connecting rod of the drive component (15,25) An elastic component is additionally provided with (134,234), by promoting the connecting rod (134,234) so that elastic component compression and simultaneously driving should Plunger assembly (13,23) is moved from the proximate of the accommodating body (11,21), and by discharge the connecting rod (134,234) with The plunger assembly (13,23) is driven automatically from the distal end of the accommodating body (11,21) by the screen resilience that the elastic component is provided Move proximally to.

19. device for casting according to claim 18, it is characterised in that the elastic component is cone-type spiral structure, the elasticity Part is between the near-end of drive component (15,25) and the near-end exterior side wall of accommodating body (11,21).

20. device for casting according to claim 19, it is characterised in that the minimum one end of the elastic component diameter is located at driving The near-end of component (15,25), maximum one end of the elastic component diameter is located at the near-end exterior side wall of accommodating body (11,21).

21. the device for casting described in a kind of claim 1 or 5 is used for the purposes of fluid perfusion in unit for endoscope operation.

22. the device for casting described in a kind of claim 1 or 5 is used for the purposes of fluid perfusion in internal lithotrity.