CN85108663A - Pressurized fluid dispenser - Google Patents

Abstract

Be used for fluidic a kind of allotter and comprise a elastomeric bladder, keep capsule to be in a capsule mounting structure of tensioning state with an opening and a blind end.The capsule mounting structure comprises the fixed structure piece that has the evagination curved surfaces.Mounting structure also comprises to be fixed the two ends of capsule so that make the installed part of capsule tensioning on curved surfaces.A flow control valve is communicated with the opening of capsule, to regulate effusive fluid flow from capsule.Flow controller comprises a valve body, a transversal area of passage of controlling flow passage by spool.Motion by spool is controlled by sealing a mechanism that separates with fluid flow passages.

Description

Pressurized fluid dispenser

The present invention relates generally to pressurized fluid dispenser, more specifically to the pressurized fluid dispenser that with an elastomeric bladder is the thing pressurization in the capsule.

A kind of purposes of capsule formula allotter is that liquid preparation and other fluids are expelled in the human body.When being expelled in the human body, generally stipulate certain flow to fluid by the doctor.At present finish this task with a kind of medicine enumerator.Drip the medicine enumerator and generally comprise the bottle that the flow-like medicament is housed, it hangs on a certain height that is higher than patient.Adjust flow by adjusting a flow control valve, up to there be suitable dripping to count in following period of time by till the valve.

For distributing fluids, drip the medicine counting assembly some shortcomings are arranged.The most outstanding shortcoming is the error that enters the fluid flow of human body.Bottle may hang on the differing heights with respect to human body, and the fluid level in the bottle changes along with bottle emptying.These two factors all change the gross head of system, thereby change the flow of system.In addition, every kind of fluid has different surface tension and viscosity, and surface tension and viscosity are determining the size that the formed medicine of fluid drips.The variation of gross head is dripped the different of size with medicine may cause the error that is higher or lower than regulation flow 15～20% in any given time.

Dripping the medicine enumerator reaches at the scene and also has other shortcomings when using in hospital.When patient requires to move, drip the medicine enumerator and also must move.Often to increase a people and hold up the bottle that fluid or medicament are housed in the transport disease man-hour.

Owing to drip a medicine enumerator error is arranged, adopted additive method for liquid preparation being expelled in the human body.Pump improves the precision of the fluid flow that enters human body; Yet the contraction of fluidic mobile interference blood flow is flowed when being pumped.In other words, pump is with uneven flow injecting fluid.

It seems that the convection cell pressurization be a kind of solution.Yet the prior art of attempting to pressurize also encounters problems.Gas can not share with fluid, because gas and fluid may react to each other, and medicament is not vital with other substance reactions.In addition, gas pressurized also brings gas to be expelled to danger in the human body unintentionally, and this may be fatal.

Add to roll over an expandable capsule and also attempted, but once encountered problems.Distinct issues using the trial in the past of capsule once be when capsule during near the emptying state flow change.Pressure sharply reduces along with capsule emptying, and flow also descends as a result.Several prior art devices were once attempted head it off; Yet the success that they are obtained is limited.

The inventor also is one of the inventor who adopts some prior art devices of capsule.In No. the 3506005th, United States Patent (USP) disclosed device and in No. the 3689595th, United States Patent (USP) disclosed improvement (the two is all by the common invention of the inventor) to this device adopted a capsule that axially is installed on the axle.Control necessary valve system of effusive flow from capsule is also very complicated in these devices.This valve needs many special parts and adopts a metal spring to keep the closed position of valve.This metal spring does not separate with fluid, thereby the chemical reaction such as oxidation may change the fluid that flows through spring.In addition, this valve makes flow change with pressure decline.

Disclosed device (inventor also is its co-inventor) adopts a capsule on the outer surface that is contained in rotating curve cochlear part in No. the 3907169th, United States Patent (USP).This device has been eliminated the difficulty that capsule aligns when making on axle, yet the rotation of cochlear part brings other problems.Since when capsule be filled or during emptying the cochlear part may move, capsule must be fixed on the cochlear part.Capsule needs special appearance to be used for capsule is fixed on the clip of the special appearance on the cochlear part to adapt to.This device adopts the valve that is similar to a disclosed complexity in the aforementioned patent.Formerly there is the existing problem of this valve in the patent still to be present in the device that this patent introduces.

Therefore, need a seed capsules formula allotter, it can be given pressurized with fluid and can keep constant substantially flow along with capsule emptying, and it is made easily and assembles, and uses easily.In addition, need a kind of valve system on capsule formula allotter, it has better way work and does not have and the contacted metal parts of capsule inner fluid.

Capsule formula allotter of the present invention has overcome above-mentioned shortcoming.This capsule formula allotter comprises the capsule that has an opening and a blind end, and it is made by a kind of elastomeric material.This allotter also comprises a capsule mounting structure, and it comprises and has a fixed component that protrudes curved surfaces and be used for the two ends of capsule are fixed with respect to curved surfaces the installed part that capsule is stretched along curved surfaces.

The preferably individual piped substantially microscler thing of being made by elastomeric material of capsule, it can be made with extruding or mould pressing method.The blind end of capsule preferably has individual enlarged portion.The capsule installed part that is used for fixing blind end comprises cracking of this enlarged portion that is used for taking up capsule.

This fluid distributor also comprises a flow controller that is used for regulating effusive fluid flow from capsule.Flow controller preferably separates with capsule and capsule mounting structure, and can be connected above them with dismantling.Flow controller comprises the valve body that has the fluid passage of passing it, and passage comprises intake channel and exit passageway.The valve piece also has a chamber that forms so therein, makes one section intake channel of part formation in chamber and the fluid flowing passage between the exit passageway.One is placed in the chamber and can moves therein and pass the transversal area of passage of the fluid passage in chamber with change by spool.The motor control that ends spool does not contact with controlling organization so be assigned with fluid in the outside, fluid passage.

Fig. 1 is the perspective view of the capsule formula allotter of assembling of the present invention;

Fig. 2 is the decomposition diagram of capsule formula allotter of the present invention, and its middle cover door is opened the capsule that is in pretension, emptying state with demonstration;

Fig. 3 is the cutaway view of an embodiment of the flow controller of allotter of the present invention;

Fig. 4 is the valve installed part of capsule and the cutaway view of valve;

Fig. 5 is the figure of a kind of embodiment fixed broken section on the pretension surface of expression capsule;

Fig. 6 is the perspective view of a structure double fluid amount allotter according to the invention;

Fig. 7 is the perspective view that is used for the gear drive flat board of fluid distributor of the present invention as another kind of flow controller;

Fig. 8 is the plane graph of another kind of flow controller;

Fig. 9 is the blind end figure of another kind of embodiment that is used for the capsule of allotter of the present invention;

Figure 10 is the perspective view that is used for the detachable mount pad of capsule formula allotter.

Referring to Fig. 1, capsule formula allotter (20) is drawn as the appearance that it generally is used.A micropore pipeline (22) is connected the outlet of capsule formula allotter (20) with injection needle (23).Syringe needle (23) can insert in the patient body.Liquid preparation enters sick body through pipe (22) and syringe needle (23).Yet dividing dose out powders in human body only is a kind of possible purposes of capsule formula allotter of the present invention (20).Capsule formula allotter of the present invention also can be used to distribute various other liquid substances, applies some make up comprising industrial medicine, food or industry and consumption.

Referring to Fig. 1 and 2, capsule formula allotter (20) comprises a capsule box (28) and a supporting flow controller (30).Capsule box (28) comprises a main casing (32), a lid (42) and a capsule assembly (59).

In the most preferred embodiment of capsule box (28), main casing (32) is a rectangular substantially box.Housing (32) comprises a rectangular substantially back of the body (36) that has four rectangular side walls (24), (25), (26) and (27), and sidewall connects along the right angle, four limits of the back of the body (36).Connect a sidewall (27) free margins be rotatable cover (42).The size of rectangular substantially lid (42) cooperates to form a closed container with main casing (32) upper edge.A thin flexiplast hinge (39) is connected to lid (42) on the sidewall (27) better.Lid (42) keeps closing by a snap close (43).Mesh on the outer of sidewall over there (25) and with flexible snaps (43) on the long free margins of the rectangular protruding lip of this sidewall (25) (41) and lid (42).Snap close (43) is gone up location like this at lid (42), so that the engagement of the protruding lip (41) on notch (143) on the snap close (43) and the main casing (32).

For the person skilled in the art, obviously can come lid (42) is connected on the housing (32) with some other schemes.For example, a slide lid can replace rotatable cover (42).Hinge in the most preferred embodiment (39) and snap close (43) can replace with the one group of groove that takes up a slide lid in sidewall (24), (25), (26), (27).For example, lower wall (26) can have one not far and extend across cracking of housing width from its free margins.On adjacent sidewall (25), (27), should have and this groove that cracks and align.Similar groove groove in sidewall (25), (27) that should align in above-mentioned sidewall (24).Lid among this embodiment should be rectangular substantially and dimensionally snug fit in the groove of sidewall (24), (25), (27) and in the cracking of lower wall (26).When lid just forms a box type container or capsule box (28) when inserting fully.

The upper side wall of main casing (24) has first a valve arrangement installation portion (44) that is used for fixing capsule assembly top.Best mount pad is from the free margins of upper side wall (24) the U font peristome (44) that (36) extend of supporting or opposing.U font peristome (44) approximately passes 3/4ths of upper side wall (24) front and back width.Opening (44) is positioned at a jiao near box type container.Along the periphery of opening (44) individual undercut groove (44a) is arranged at the inner surface of upper side wall (24).

At upper side wall (24) surface preferably there is a pair of perpendicular positioning pin (48).Alignment pin (48) preferably is positioned at the place of half between the minor face farthest of U font opening (44) and sidewall (24).Pin (48) is preferably columniform firm for the position that guarantees alignment pin (48), is preferably in sidewall (24) inner surface and locates to paste a reinforcing block (not shown) facing to pin (48).

In the inner extension of main casing (32) and along sidewall (27) inner surface a fixed structure piece (34) is arranged, its side forms protrudes arc pretension surface (52).Pre-pressing structure spare (34) has first end (54) and second end (56).The length on pretension surface (52) approximately equates with sidewall (27) and protrudes to sidewall (25).First end (54) of preload piece (34) is fixedly connected on the inner surface of sidewall (27) at the top near housing (32).Second end (56) of preload piece (34) can be connected in the inside of sidewall (27).Pretension surface (52) is best and housing (32) formation is whole.In order to increase structural intergrity, a supporting member (55) can be connected between sidewall (27) and pretension surface (52) from second end (56) nearby.Preload piece (34) can be connected with the back of the body (36) of housing (32) along its length.

Pre-pressing structure spare (34) preferably is positioned near sidewall (27) to be located, so that take the space of minimum in housing (32) inside.The top on protrusion arc pretension surface (52) and the first valve member mount pad (44) be vertical alignment substantially.

The second capsule mount pad (58) is positioned near second end (56) on arc pretension surface (52) to be located, and this end is away from valve assembly mount pad (44).The second capsule mount pad (58) takes up the blind end of capsule (64).Be preferably in preload piece (34) and locate to form one crack (58) near its second end (56).These crack (58) extensible whole width that strides across preload piece (34).The seamed edge of preload piece (34) is located rounding to prevent to damage capsule at opening (58).In other words, the lower end (56) of preload piece (34) can nearby finished from sidewall (27), reserves a space that forms crack (58) between preload piece (34) lower end (56) and the sidewall (27).

Capsule assembly (59) is placed in the main casing (32), as shown in Figure 2.Referring to Fig. 2 and 4, capsule assembly (59) comprises the elastomeric bladder (64) of a valve installed part (60), a locking member (62), a valve (72) and mold pressing or extruding.

Valve installed part (60) firmly fixes capsule (64), and has the valve (72) that is used for controlling the fluid flow that passes in and out capsule (64).Valve installed part (60) is also by being firmly fixed at the top of capsule assembly (59) upper side wall (24) of main casing (32) with the interaction of valve assembly mount pad (44).The shape of valve installed part (60) is fit to snug fit in U font opening (44) lining of the upper side wall (24) of housing (32), as shown in Figure 2.

Referring to Fig. 4, the optimised form of valve installed part (60) draws.This installed part generally is tubular, and an end has a wide trough of belt bead (68).The perforate that runs through installed part (60) can have two different internal diameters.Form a shoulder at the varying aperture place.A cannelure (70) is at the middle part of bead (68).The degree of depth of groove (70) is preferably uniform.The external diameter of groove (70) is slightly smaller than the width of U font opening (44) in the housing (32), and the external diameter of bead (68) is then greater than the width of opening (44).The upper side wall (24) that the axial width of groove (70) also is a bit larger tham housing (32) deducts the thickness behind the undercut groove (44a), so that the following rail of bead (68) fits in the undercut groove (44).Difference in size between the bead (68) of valve installed part (60) and groove (70) thereof and the U font opening (44) is very little, so that the bead (68) of installed part (60) is close to engagement opening (44), thereby firmly fixes the top of capsule assembly in place.

In installed part (60) end a valve (72) is arranged, such as duckbill valve, its technology is known.Two flaps of duckbill valve (72) are towards the direction of the bead of leaving installed part (60) (68).When an extension element such as a pipe when the flap direction is inserted valve, flap can separate.When valve (72) when opening like this, fluid can be by passing in and out capsule (64).Open duckbill valve (72) before up to such extension element, the fluidic pressure holding valve lobe in the capsule of filling (64) closes up, and prevents to pass through from any fluid of capsule.

Can before it wishes to use, prevent that fluid from flowing through valve body (60) with other devices, and when wishing, still allow to open at an easy rate.For example, a rubber slab made from self-packing rubber type of material can be used to replace duckbill valve.

Valve (72) is placed on the lower edge near installed part (60), and installed part (60) has a short projection, and its centre bore portion puts in the valve, and forms a shoulder, and valve (72) can lean against on this shoulder securely.

The capsule 64 of mold pressing or extruding is tubular, has opening and blind end, at blind end individual enlarged portion (57) is arranged.The embodiment of capsule shown in Figure 2 (64) is molded into and has the blind end that forms necking part (61) and strengthen solid pommel (57).The necking part (61) of this embodiment of capsule (64) and increasing pommel (57) are found out in Fig. 5 in more detail.

Another embodiment mold pressing of capsule shown in Fig. 9 (64a) or be squeezed into a straight tube.Pipe is cut into after the suitable length, and an end of pipe is folding and fixing so that the sealing pipe end forms the pipe blind end that has enlarged portion (67) with clip (66).

The locking member (62) of the valve installed part (60) of most preferred embodiment (Fig. 4) preferably has the thin-walled plastic clip of one group of internal lock tooth.After the opening of capsule (64) was enclosed within the small end of installed part (60), locking member (62) was clipped on the opening of capsule (64).The no bead end of installed part (60) and retaining ring (62) clip the opening of (64), thereby guarantee tight seal and snug fit between capsule (64) and the installed part (60).May wish in some cases installed part (60) go up by clip (62) round part be longer than the width of clip (62) vertically slightly, and provide an enlarging or chimb in the installed part end, make clip (62) be stuck in minor diameter cervical region less than valve installed part end, thereby guarantee more firmly, prevent capsule (64) slippage from the installed part.

The not tensioning length of capsule when being connected first mount pad (44) from valve installed part (60) through pretension surface (52) distance to second mount pad (58), therefore be connected to valve housing (44) and blind end when being connected to second mount pad (58) when valve assembly (60), capsule is tensioned, and this will discuss hereinafter.

Introduce the assembling of capsule box (28) below.Capsule assembly (59) is put housing (32) into.The enlarged portion (57) of capsule (64) is put the space between pretension surface (52) and the sidewall (27) into, as shown in Figure 5.The necking part (61) of capsule (64) passes crack (58).Crack (58) enough narrow, thereby the enlarged portion (57) that prevents capsule (64) is by crack (58).The rounded necking part (61) of the seamed edge of the opening (58) in the pretension surface (52) to prevent to scratch capsule itself.Capsule (64) is opened on slick protrusion arc pretension surface (52) then, and installed part (60) sticks into U font opening (44) lining.When the two ends of capsule assembly (59) were fixed in the housing (32), capsule (64) was along pretension surface (52) tensioning, and capsule (64) is under the tensile stress.The curvature on pretension surface does to become to make the capsule (64) of tensioning closely and glossily to fit in this surface.

Groove (70) snug fit on the bead (68) of installed part (60) is in opening (44), and the elastic rubber material of capsule (64) produces the power perpendicular to upper side wall (24), draws the last rail of bead (68) to such an extent that abut against on the upper side wall (24).

Firmly fix the blind end of capsule near crack (58) of preload piece second end.Vertical force produces a frictional force, thereby fixed installation part (60) is in sidewall (24).Put into main casing (32) afterwards at capsule assembly (59), the lid (42) that closes has promptly been finished capsule box (28).

When adopting another seed capsules shown in Figure 9, assembling generally is identical.By enlarged portion (67) the insertion pretension surface (52) that folds and clamp formed capsule of capsule tube end and the space between the sidewall (27).A part of capsule pipe near enlarged portion (67) is put into crack (58).Say again, the enlarged portion of capsule (67) is big as can not to pass crack (58), so that the blind end of capsule (64a) is firmly fixed at the lower end (56) of pretension surface (52).Comprising these another seed capsules (64a) capsule assembly (59) the valve end with above the person of introduction identical, and it with the connection of housing (32) and introduce above the same.

The tensioning of empty pocket (64) makes cyst wall that stress be arranged, so even some fluids are arranged in the capsule, also the fluid of the inside is placed under the pressure.When capsule was equipped with suitable flow controller (30), almost this pressure in the capsule of emptying helped to guarantee fluid flow steadily and uniformly.The pretension amount, thus impose on the pressure of fluid during near emptying when capsule so that its is discharged, can change by the capsule that adopts different length.Short capsule is stretched in and will be subjected to when go up on arc pretension surface (52) than long bigger stretching of capsule.This bigger stretching will cause the bigger pressure of capsule inner fluid.

Capsule (64) has enough elasticity, when it is subjected to such tensioning, perhaps can not break when fluid makes it further increase stress when pouring into.Capsule (64) preferably should have enough elasticity, makes it can fill the whole inner chamber that in fact capsule occupies the capsule box housing (32) the part between pretension surface (52) and sidewall (27).

Flow controller (30) removably is connected in the top of capsule box (28), so that open valve (72), and regulates the fluid flow that enters inflow pipe (22) from capsule (64).

Referring to Fig. 2 and 3, flow controller (30) comprises a valve piece (73), and opening or chamber (88) are wherein arranged.Valve piece (73) also comprises a fluid passage, and it is by an intake channel (94), an exit passageway (96), and the part of chamber (88) is formed.One fits into opening (88) by spool (74), the in succession end of inlet fluid passage (94) of probe (76), and controlling organization (78) is being controlled and is ended spool (74).Move in chamber (88) by spool, thereby control is passed the transversal area of passage of chamber (88) to the fluid flow passages of exit passageway (96) from intake channel (94).

By controlling organization (78) and fluid passage from intake channel (94) to exit passageway (96) are separated in the annular seal space (88), do not flow to controlling organization so that do not walk around by spool (74) from import (94) fluid that the part of (88) flows to outlet (96) through the chamber by spool (74).So, provide beyond fluid flowing passage by the control of spool, and be assigned with not touch controls of fluid mechanism.

The best spool (74) that ends comprises column part (82) and truncated cone end (84).The big end of truncated cone part (84) is against column part (82).Go up big end place, close truncated cone end (84) at column part (82) and a dovetail cannelure is arranged, built-in ring (86).All the other outer surfaces of column part (82) have external screw thread (83).

In this flow controller most preferred embodiment, opening (88) extends to an end of valve piece (73).The shape correspondence of valve piece (73) split shed (88) the shape by spool (74).Opening (88) has a column part (90) (Fig. 3) and truncated cone part (92).The column part (90) of opening (88) extends through valve piece (73) to an end face.

There is an import (94) and the outlet (96) in valve piece (73) fluid passage by valve piece (73).One end of intake channel (94) feeds the truncated cone part (92) of opening (88).The other end of intake channel (94) extends to a big rectangle face of valve piece (73).Outlet (96) extends to the face of the valve piece (73) relative with the face that import (94) is arranged from the truncated cone part (92) of valve piece opening (88).

Fit into opening (88) by spool (74), as shown in Figure 3.During installation, fit into the truncated cone part (92) in chamber (88), and fit into the column part (90) of valve piece opening (88) by the column part (82) of spool (74) by the truncated cone part (84) of spool (74).Seal with O ring spare (86) fits snugly between the wall of spool (74) and opening (88), thereby guarantees fluid-tight, prevents from that fluid from walking around by spool (74) to spill through opening (88).Sealing member (86) is being gone up location like this by spool (74), so that when be in by spool (74) its in during the position sealing member (86) in the outside of exit passageway (96), so it is not in import (94) with export in the fluid passage between (96).This sealing member (86) separates controlling organization and fluid flowing passage.

A probe (76) is from coaxial the stretching out of import (94).Probe (76) can be pipeline section or the syringe needle of being made by acceptable medical material, and the two technology all is known.The pipeline section of medical material should share with the duckbill valve that is connected on the mounting structure (60).When replacing duckbill valve, the plate with the self sealss rubber type of material can use syringe needle.The end of the probe (76) that is connected with import (94) can be slightly outwards enlarging, thereby probe (76) wedging valve mounting structure (60) lining and sealing are passed through the flow passage of flow controller (30).

Can adorn a reducer (not shown) in the import (94).This reducer causes an opening, and its size changes according to the fluid pressure in the capsule (64).This reducer can reduce opening under elevated pressures, thereby causes a less opening and reduce fluid flow.Along with fluid pressure in the capsule (64) descends, the opening of this reducer strengthens again.Reducer in response to pressure makes that effusive fluid flow is even from capsule (64).So before the basic emptying of capsule (64), the flow of fluid system is constant substantially.Also can obtain similar result with a reducer that has fixed orifice in some cases.

The mode of fluid flows amount controller (30) is, flows through probe (76) earlier and enters intake channel (94), flows through the truncated cone part (92) of opening (88), walks around the truncated cone part (84) of the spool that dams (74), flows through exit passageway (96) then.Preventing at the seal with O ring spare (86) on the column part (82) of spool (74) that fluid from walking around by spool (74) flows to position control mechanism and flows through the opening of opening (88).

Adjustable by the axial location of spool (74) in valve piece opening (88), thus control flows to the Fluid Volume of exit passageway (96) from intake channel (94).When be in by spool (74) it in during the position, nestle up the truncated cone part (92) of opening (88) by the truncated cone part (84) of spool, the truncated cone part that fluid can not be walked around by spool flows to exit passageway (96) from intake channel (94).When outside spool (74) is axial, moving, between truncated cone part of ending spool and opening (88) wall, form little gap, small volume of fluid is walked around by spool flow to exit passageway (96) from intake channel (94).When further outside when mobile by spool (74), the gap between spool and opening wall is widened, and makes more fluid flow through the import of flow controller (30) and the cavity part between the exit passageway.Change the cross-sectional area that promptly changes flow passage by the axial location of spool (74) in opening (88).Fluid flow by flow controller (30) is along with the change of flow passage cross-sectional area changes.

Control this knob and column part (82) screw-threaded engagement of ending spool (74) by control handle (78) by the position of spool (74) in valve piece opening (88).

Control handle (78) is contained in crack (95) in the valve piece (73).Crack (95) at the end face opening, but preferably bottom surface sealing.Control handle (78) comprises that size is fit to be contained in a vinyl disc that cracks in (95), and there is screwed hole at the center.The centre bore screw thread (89) of control handle (78) cooperates with screw thread (83) on column part (82) outer surface of spool (74).Control handle (78) outer rim annular knurl is so that the human finger rotates it.

When control handle (78) rotates, screw thread (89) on the knob (78) and screw thread (83) engagement that ends on the spool (74), thereby moving into or shift out opening (88) by spool (74) to change the fluid flow that passes through flow controller (30).When reaching desirable flow, the screw thread (89) on the control handle (78) and help the position of remain off spool (74) column part by spool (74).Axially between truncated cone part (84) and screw thread (83), screw thread (83), (89) and fluid flow passages are separated around sealing ring (86) by spool (74) circumference.

Opening (88) in the valve piece (73) is located adjacent to a face of valve piece (73), so that expose by the top of crack (95) with finger control handle (78) in concentric the cracking of axis (95) of opening (88).So, when needs are adjusted flow, be convenient to human finger turning knob (78).

May be desirable to provide a kind of fixed predetermined flow in some occasion.In this case, a fixed spool (74) has been eliminated the error that user or medical worker cause.Flow is predetermined at concrete medicament, and the position of spool (74) is fixed in chamber (88), thereby this fluid flow is provided, and the control handle of being regulated by the user (78) becomes unnecessary.

Referring to Fig. 3, two holes are arranged on the rectangular surfaces that has import (94) of valve piece (73).These holes cooperate with the alignment pin (48) at capsule box housing (32) top.The internal diameter of two best cylindrical holes is a bit larger tham the external diameter of alignment pin (48), and hole centre-to-centre spacing equals the centre-to-centre spacing of alignment pin (48).

When assembling flow controller (30) and capsule box (28), alignment pin (48) inserts in the hole of valve piece (73), and probe (76) inserts the valve (72) that passes in the valve connector (60).Therefore probe (76) is opened valve (72).Probe (76) should be parallel to guarantee that flow controller when being connected (30) and capsule box (28) align with two pins (48).After flow controller (30) was contained on the capsule box (28), probe (76) extended through duckbill valve (72) and puts in the capsule (64).

The exit passageway of flow controller (96) microporous pipe of ining succession, as technical known person, it as the pipeline (22) that connects patient (Fig. 1).Fluidic pressure forces fluid to pass through flow controller (30), outlet (96) and distribution ducts such as pipeline (22) and syringe needle (23) in the capsule (64).

In advance, capsule (64) is filled in capsule box (28) lining.Do not need flow controller (30) during perfusion capsule (64).Can pour into a plurality of capsule boxes (28) away from the position at one like this, and be used for a flow controller (30) interchangeably.

When capsule assembly (59) in place and cover (42) and pour into capsule (64) in main casing (32) with protruding lip (41) and lock tooth (43) the locking back that puts in place.Perfusion capsule (64) uses the apparatus can cause big pressure in capsule (64), and the perfusion unit that maybe can buy as syringe is just as used in the hospital pharmacy at present.A probe that resembles the flow controller probe (76) is contained on the syringe.Probe passes duckbill valve (72) or self sealss offset plate and medicinal liquid is injected capsule (64).When capsule (64) when filling, take off apparatus and duckbill valve or self sealss offset plate closure, prevent the fluid outflow.Having the available alignment pin of capsule box (28) (48) of the capsule of filling (64) and syringe needle or probe (76) is connected in flow controller (30) and goes up standby.

Flow controller (30) and capsule box (28) are two parts that separate, and they form an interchangeable system.Therefore, need only possess a limited number of flow controllers (30) at hand, it can be used for having any capsule box (28) of specific dimensions.Because capsule box (28) and flow controller (30) can exchange, user's reserve requirements has been simplified.

Individual window (99) (seeing Fig. 1 and Fig. 2) is preferably arranged so that when capsule emptying, observe capsule (64) on the lid (42) of housing (32).The inner surface of the back of the body (36) of capsule box housing (32) is located to mark scale facing to window (99) so that also remain how many fluids in the indication capsule (64).Different scales are chromatic so that further help the people to observe the state of capsule when the capsule tapping in most preferred embodiment.

Referring to Fig. 7 and 8, the another kind of device of control by the flow of flow controller drawn.What most preferred embodiment was regulated flow between intake channel (94) and the exit passageway (96) ends spool (71) by what spool (74) and control handle (78) were replaced by that rack-and-pinion controls, so that an aligning in the different metering orifice (81) of the import of a plurality of these flow controllers of the connection that separates (100) and exit passageway (94), (96), thereby change is by the transversal area of passage of the fluid passage of controller.

In this embodiment, the intake channel (94) and the exit passageway (96) of flow controller (100) are axially aligned, and are arranged in as the vertical lengthening opening of the valve piece (102) of the housing of flow controller (100) or the relative both sides of chamber (101).A lengthening tooth bar (71) has band tooth section and perforated section, is contained in lengthening lining, chamber (101).

The perforated section of lengthening tooth bar (71) has the through hole (81) of a plurality of different sizes.By the lengthwise movement of lengthening tooth bar (71) in valve piece opening, each in these holes (81) all is moveable between the intake channel (94) and exit passageway (96) of aiming at the flow controller valve body.

The motion of tooth bar (71) is to be realized by the tooth (75) of tooth bar (71) band tooth section and the interaction of stem gear (79) and knob (77).Knob (77) reaches valve piece (102) outside of flow controller (100), so as the user can near and rotate it.Knob (77) rotates at a place of valve piece (102), and tooth bar (71) moves in opening (101).Provide intake channel (94) to the adjustment of the fluid flow of exit passageway (96) by turning knob (77) from flow controller.When turning knob (77), the engagement of the tooth (75) of the tooth of gear (79) and tooth bar (71) vertically moves tooth bar (71), up to suitable hole (81) till aiming between import and exit passageway (94), (96).

The interval of tooth bar (71) mesopore (81) makes only has a hole to aim at flow passage in any given time.When the position of tooth bar (71) makes import and exit passageway be between the hole (81) of tooth bar (71), flow and cut off by one group of sealing, sealing member around inlet hole another sealing member around outlet opening.These sealing members guarantee that also fluid does not produce the flow different with the hoper around crossing other holes (81) by spool (71) leakage flow when selecting a hole (81).In addition, the controlling organization of being made up of the band tooth section (75) and the gear (79) of tooth bar (71) is fully outside fluid flow passages.

On the side relative of tooth bar (71), can mark number with the tooth that the tooth section is arranged (75).The Bian Shangke of valve piece (102) has window (103), and a number exposes through window on each position of tooth bar (71), thereby indicates which hole (81) to aim at fluid flow passages.Number can be corresponding with tooth bar (71) in the suitable volume flow in each hole (81).

Referring to Figure 10, drawn and be convenient to align sketch with the device of clamping capsule box (28).A leather sheath (120) is permanently covering flow controller (30).Leather sheath (120) has a slipper bracket spare (122), and it has first open position and second closed position.The open position of carriage (122) draws with imaginary line in Figure 10.Slipper bracket (122) comprises a L font spare (124), and it has turns over end (126) capsule box (28) snug fit in slipper bracket (122) on one.Capsule box (28) can be shown in an open position in carriage (122), be contained in carriage (122) lining when stretching out from leather sheath body (128).During closed position in carriage (122) moves to leather hood body (128), capsule box (28) combines with flow controller (30).Sliding part (122) remains on correct aligned position to capsule box (28) when its slip puts in place.The capsule box aligns by its position in the L font spare (124) of slipper bracket (122).When the capsule emptying in the capsule box (28), carriage (122) can slide into open position, and capsule box (28) can take off replacing.

Fig. 6 discloses the device of a plurality of capsule boxes of a kind of clamping (28) and flow controller (30).This device comprises a leather sheath (104), has a plurality of flow controllers (30) that fuse with leather sheath (104).Capsule box (28) is dismountable, slides into and skid off the separate space (106) in the leather sheath (104).Door (108) the sealing separate space (106) that can rotate or slide in one of leather sheath (104) bottom also in use keeps capsule box (28) to put in place, simultaneously in case of necessity can be so that change capsule box (28).

Flow controller has a plurality of probes (76), such as syringe needle or the pipe made by suitable medical material, is connected in inlet hole (94).Outlet (96) feeds hybrid chamber (110).Fluid mixes and the pressure of a plurality of capsules forces intermixture to be injected into sick body from leather sheath outlet (112).

Though the present invention has introduced with some most preferred embodiment, it will be conspicuous revising concerning the person skilled in the art.All such modifications all should be included in the following claim scope.

Claims (24)

1, a kind of capsule that is used for fluid distributor, wherein this capsule is stretched on the surface, thereby pressurizes so that distribute above-mentioned fluid to capsule, and above-mentioned capsule comprises:

The elastomer of a lengthening, above-mentioned body at one end seal and at the other end outlet are arranged;

In above-mentioned allotter, be used for connecting removably respectively at any time the above-mentioned blind end and the above-mentioned port of export, so that above-mentioned capsule is stretched in first and second devices on above-mentioned surface;

And, seal the valve gear of the above-mentioned port of export usually at the above-mentioned port of export.

2, as seed capsules of the requirement in the claim 1, wherein above-mentioned first connecting device comprise in the above-mentioned allotter that is used for packing in cracking first and strengthen can not be by the above-mentioned second portion that cracks, thereby above-mentioned capsule is being stretched in the above-mentioned above-mentioned blind end that blocks when surperficial.

3, as desired seed capsules in the claim 2, wherein above-mentioned enlarged portion comprises a normally spheric part that is molded into by above-mentioned capsule material.

4, as desired seed capsules in the claim 2, wherein above-mentioned enlarged portion comprises a folded part of above-mentioned capsule material, and above-mentioned folded part is sealed by clamping device.

5, as desired seed capsules in the claim 1, wherein above-mentioned second connecting device comprises an installed part that has bead, above-mentioned is used for packing into from the opening that the free margins of the wall of above-mentioned allotter extends, this bead is wideer than above-mentioned opening, so that above-mentioned capsule is being stretched in the above-mentioned port of export that above-mentioned capsule is blocked on above-mentioned surface.

6, as desired seed capsules in the claim 5, wherein above-mentioned installed part comprises a piped substantially body and above-mentioned bead is made a groove around above-mentioned body, above-mentioned body the width at above-mentioned groove place corresponding basically the width of above-mentioned opening so that above-mentioned installed part snug fit is in opening.

7, as seed capsules of the requirement in each of claim 1 to 6, wherein above-mentioned valve gear can be opened by a probe.

8, as desired seed capsules in the claim 7, wherein above-mentioned valve comprises a duckbill valve.

9,, comprise the pipe of a tartan system as seed capsules of the requirement in each of claim 1 to 8.

10, comprise a kind of fluid distributor as desired seed capsules in each of claim 1 to 8, above-mentioned allotter comprises a housing, it a fixed structure piece that has convex surface is arranged and be used for the above-mentioned two ends of above-mentioned capsule are fixed with respect to above-mentioned curved surfaces so as capsule by installed part along this curved surfaces tensioning.

11, as desired a kind of allotter in the claim 10, the said structure spare inner surface of above-mentioned housing of ining succession wherein.

12,, also comprise a flow controller that when above-mentioned valve is operated, is communicated with the above-mentioned outlet fluid of above-mentioned capsule as desired a kind of allotter in claim 10 or 11.

13, as desired a kind of allotter in the claim 12, wherein above-mentioned flow controller comprises:

A valve body piece;

Pass a fluid flowing passage of above-mentioned valve piece, above-mentioned passage comprises an intake channel and exit passageway that is communicated with the above-mentioned outlet fluid of above-mentioned capsule;

A chamber in the above-mentioned valve piece, above-mentioned fluid flowing passage comprise the part between above-mentioned intake channel and above-mentioned exit passageway in above-mentioned chamber;

One that is contained in above-mentioned intracavity by spool, the wherein above-mentioned spool that ends can move in above-mentioned chamber, thereby change transversal area of passage, and the wherein above-mentioned control that ends valve core movement provides in outside, above-mentioned fluid passage by the above-mentioned fluid passage in above-mentioned chamber.

14, as desired a kind of allotter in the claim 13, wherein above-mentioned flow controller comprises having identical shaped with the part in an above-mentioned chamber substantially individuality by spool, a position in wherein above-mentioned body has, on this position above-mentioned body fill up above-mentioned chamber above-mentioned part in case the fluid stopping body flow through above-mentioned chamber from above-mentioned intake channel to above-mentioned exit passageway, and above-mentioned body can from above-mentioned in the position move, wherein along with above-mentioned body from its in the position move, open by the fluid passage of above-mentioned chamber around above-mentioned body from above-mentioned intake channel to above-mentioned exit passageway.

15, a kind of pressurized fluid dispenser, it comprises:

The elastomeric bladder that a blind end and an opening are arranged;

And a capsule mounting structure, it comprises:

A fixed structure piece that has the evagination curved surfaces;

Be used for fixing respectively the above-mentioned opening of above-mentioned capsule and first and second installed parts of blind end, fix, so that above-mentioned capsule is along the tensioning of above-mentioned evagination curved surfaces with respect to the said fixing structural member;

With the flow controller that the above-mentioned opening fluid of above-mentioned capsule is communicated with, it comprises:

A valve body piece;

Pass a fluid flowing passage of above-mentioned valve piece, above-mentioned passage comprises an intake channel and exit passageway that is communicated with the above-mentioned opening fluid of above-mentioned capsule;

A chamber in the above-mentioned valve body, above-mentioned fluid flowing passage is included in the part in the above-mentioned chamber between above-mentioned intake channel and the above-mentioned exit passageway;

One that is contained in above-mentioned intracavity by spool, the wherein above-mentioned spool that ends can move in above-mentioned chamber, thereby change transversal area of passage by the above-mentioned fluid passage in above-mentioned chamber, and the wherein above-mentioned control that ends valve core movement provides in outside, above-mentioned fluid passage, the above-mentioned spool that ends comprises having identical shaped with the part in an above-mentioned chamber substantially individuality, a position in having in the wherein above-mentioned body, on this position above-mentioned body fill up above-mentioned chamber above-mentioned part in case the fluid stopping body flow through above-mentioned chamber from above-mentioned intake channel to above-mentioned exit passageway, and above-mentioned body can from above-mentioned in the position move, wherein along with above-mentioned body from its in the position move, be opened by the fluid passage of above-mentioned chamber around above-mentioned body from above-mentioned intake channel to above-mentioned exit passageway.

16, as desired a kind of allotter in claim 14 or 15, wherein the flow controller chamber comprises a truncated cone part that forms the above-mentioned part between above-mentioned intake channel and the above-mentioned exit passageway, and above-mentioned stop valve core body comprises a truncated cone part, appearance becomes when above-mentioned stop valve core body to be positioned at the above-mentioned above-mentioned truncated cone part that fills up above-mentioned chamber in during the position, above-mentioned stop valve core body can from above-mentioned in the position move axially, thereby between spool and chamber wall, forming a gap, so that allow fluid flow around the spool that can in above-mentioned chamber, move, adjustable ground fills up above-mentioned chamber and selectable amount of blockage to above-mentioned flow passage is provided, and a wherein above-mentioned part by spool is not within above-mentioned fluid flow passages.

17, as desired a kind of allotter in the claim 16, wherein the part away from above-mentioned truncated cone above-mentioned stop valve core body partly is threaded;

On the above-mentioned axial location that is sealed between above-mentioned truncated cone part and the above-mentioned threaded portion around above-mentioned stop valve core body;

And threaded control handle of above-mentioned threaded portion engagement of above-mentioned stop valve core body, so that the rotation of above-mentioned control handle moves axially above-mentioned stop valve core body.

18, as desired a kind of allotter in the claim 13, wherein above-mentioned flow controller comprises by spool:

The band toothed portion is arranged and comprise a tooth bar of the part with holes in a plurality of holes, wherein above-mentioned tooth bar can move in above-mentioned chamber so that selectively each of above-mentioned hole is placed with above-mentioned intake channel and above-mentioned exit passageway and aim at;

And with a gear of the above-mentioned band toothed portion engagement of above-mentioned tooth bar, wherein the rotation of said gear is moved above-mentioned tooth bar in above-mentioned chamber.

19, be used for a kind of device of distributing fluids, it comprises:

A capsule assembly, it comprises

By the piped substantially microscler thing that elastomeric material is made, have an opening and a blind end of forming a capsule;

And a valve assembly that is communicated with the above-mentioned opening fluid of the microscler thing of above-mentioned elastomeric material system, comprise a valve, unless a probe was inserted above-mentioned valve assembly,, this valve from above-mentioned capsule, flows out otherwise will preventing fluid;

A main casing that has a fixed curved surfaces, the above-mentioned blind end of the microscler thing of wherein above-mentioned elastomeric material system is fixedly connected on the end near above-mentioned curved surfaces, and the above-mentioned valve assembly of wherein above-mentioned capsule assembly is fixedly connected on the other end place of above-mentioned main casing near above-mentioned curved surfaces, so that the microscler thing of above-mentioned elastomeric material system is stretched on the above-mentioned curved surfaces;

And removably be connected in above-mentioned valve assembly so that regulate a flow controller of effusive fluid flow from above-mentioned capsule, it comprises:

A valve body has and passes fluid flow passages above-mentioned valve body, that comprise intake channel and exit passageway;

A probe that cooperates with above-mentioned intake channel, when above-mentioned flow controller was connected to above-mentioned main casing, above-mentioned probe passed the opening that above-mentioned valve assembly puts in above-mentioned capsule;

A chamber, its part forms the part of above-mentioned fluid flow passages;

Have substantially with identical shaped one in above-mentioned chamber by spool, the wherein above-mentioned spool that ends can move in above-mentioned chamber, thereby adjustable ground fills up above-mentioned chamber and selectable amount of blockage to above-mentioned fluid flow passages is provided, and a wherein above-mentioned part by spool seals with above-mentioned fluid flow passages and separates.

20, be used for a kind of device of distributing fluids, it comprises:

A capsule assembly, it comprises:

By the piped substantially microscler thing that elastomeric material is made, have an opening and a blind end of forming a capsule;

An and valve assembly that is communicated with the above-mentioned opening fluid of the microscler thing of above-mentioned elastomeric material system;

A main casing that has a fixed curved surfaces, the above-mentioned blind end of the microscler thing of wherein above-mentioned elastomeric material system is fixedly connected on the end near above-mentioned curved surfaces, and the above-mentioned valve assembly of wherein above-mentioned capsule assembly is fixedly connected on the other end place of above-mentioned main casing near above-mentioned curved surfaces, so that the microscler thing of above-mentioned elastomeric material system is stretched on the above-mentioned curved surfaces;

And removably be connected in above-mentioned valve assembly so that regulate a flow controller of effusive fluid flow from above-mentioned capsule, it comprises:

A valve body has and passes fluid flow passages above-mentioned valve body, that comprise intake channel and exit passageway;

A probe that cooperates with above-mentioned intake channel, when above-mentioned flow controller was connected to above-mentioned main casing, above-mentioned probe passed the opening that above-mentioned valve assembly puts in above-mentioned capsule;

A tooth bar, above-mentioned tooth bar has the hole of a plurality of these tooth bars of perforation, and above-mentioned tooth bar has a band tooth section;

And with a rotatable roller gear of the band tooth section of above-mentioned tooth bar engagement, wherein the rotation of said gear moves above-mentioned tooth bar so that selectively one of above-mentioned rack bore is aimed at the above-mentioned flow passage that passes above-mentioned valve body.

21, be used for a kind of flow controller of capsule formula fluid distributor, this flow controller comprises:

A valve body piece;

Pass a fluid flowing passage that comprises an intake channel and an exit passageway of above-mentioned valve piece;

A chamber in the above-mentioned valve body, above-mentioned fluid flowing passage comprise the part in above-mentioned chamber between above-mentioned intake channel and above-mentioned exit passageway;

One that is contained in the above-mentioned chamber is ended spool, thereby the wherein above-mentioned spool that ends can move the transversal area of passage that changes the above-mentioned fluid passage of passing above-mentioned chamber in above-mentioned chamber, wherein above-mentioned control by valve core movement provides by sealing a mechanism that separates with above-mentioned fluid passage, the above-mentioned spool that ends comprises the individuality with shape identical substantially with the part in above-mentioned chamber, a position in wherein above-mentioned body has, the above-mentioned part that above-mentioned body fills up above-mentioned chamber on this position flows to above-mentioned exit passageway in case the fluid stopping body flows through above-mentioned chamber from above-mentioned intake channel, and above-mentioned body can from above-mentioned in the position move, wherein along with above-mentioned body from its in the position move, be opened by the fluid passage of above-mentioned chamber around above-mentioned body from above-mentioned intake channel to above-mentioned exit passageway.

22, as desired a kind of flow controller in the claim 21, wherein above-mentioned chamber comprises a truncated cone part of the above-mentioned part that is formed between above-mentioned intake channel and the above-mentioned exit passageway, and above-mentioned stop valve core body comprises that appearance becomes when above-mentioned stop valve core body and is in an above-mentioned above-mentioned truncated cone truncated cone part partly that fills up above-mentioned chamber in during the position, and above-mentioned stop valve core body can from above-mentioned in the position axially-movable, so that above-mentioned between the wall in spool and above-mentioned chamber gap of formation, thereby allow fluid to flow to above-mentioned exit passageway from above-mentioned intake channel around above-mentioned stop valve core body, wherein above-mentioned stop valve core body comprises one, and the position between above-mentioned import and exit passageway is not around the sealing member of its circumference, and the sealing part prevents to walk around the above-mentioned fluid flow of crossing above-mentioned sealing member by spool.

23, as desired a kind of flow controller in the claim 22, wherein:

Part away from above-mentioned truncated cone above-mentioned stop valve core body partly is threaded;

The axial positions of above-mentioned sealing member between above-mentioned truncated cone part and above-mentioned threaded portion is around the above-mentioned spool that ends;

And threaded control handle of the threaded portion of above-mentioned stop valve core body engagement, so that the rotation of above-mentioned control handle moves axially above-mentioned stop valve core body.

24, be used for a kind of flow controller of capsule formula fluid distributor, this flow controller comprises:

A valve body piece;

Pass a fluid flowing passage that comprises an intake channel and an exit passageway of above-mentioned valve piece;

A chamber in the above-mentioned valve body, above-mentioned fluid flowing passage comprise the part in above-mentioned chamber between above-mentioned intake channel and above-mentioned exit passageway;

One that is contained in the above-mentioned chamber is ended spool, thereby the wherein above-mentioned spool that ends can move the transversal area of passage that changes the above-mentioned fluid passage of passing above-mentioned chamber in above-mentioned chamber, the wherein above-mentioned control that ends the motion of spool provides by sealing a mechanism that separates with above-mentioned fluid passage, and the above-mentioned spool that ends comprises:

The band toothed portion is arranged and comprise a tooth bar of the part with holes in a plurality of holes, wherein above-mentioned tooth bar can move in above-mentioned chamber, so that selectively in the above-mentioned hole each is aimed at above-mentioned intake channel and exit passageway;

And with a gear of the above-mentioned band tooth section engagement of above-mentioned tooth bar, wherein the rotation of said gear is moved above-mentioned tooth bar in above-mentioned chamber.

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