CN105194771A - Small fluid atomizer - Google Patents

Abstract

The invention discloses an atomizing nozzle which has a smaller front end face capable of being inserted into a medical catheter with a small diameter. The characteristic dimensions such as the cross section diameter of a main body of a better atomizing nozzle is smaller than 0.2 inch (0.5 cm). The main body of the nozzle is normally connected to an extension part, and the extension part has transverse flexibility so that one nozzle main body can penetrate through a pipe body along a non-linear access. The nozzle main body is generally connected to the extension part through a lap joint portion correlated with the nozzle main body. According to the better atomizing nozzle, a D<e>/O specific value smaller than 12.0, a D<b>/O specific value smaller than about 18 and a D<b>/D<e> specific value smaller than about 1.1 are achieved. Another atomizing nozzle comprises a vortex chamber which is located on the upstream of a jet orifice and is adjacent to the jet orifice and a near-end chamber wall with a portion humidified through fluid, and the portion humidified through the fluid is at least close to one part of a dome or another curved surface.

Description

Miniature fluid atomizer

The application to be application number be 201080069763.1 name be called the divisional application of the application for a patent for invention of " Miniature fluid atomizer ", the applying date of original application is on October 20th, 2010.

Technical field

The present invention relates to atomizer and equipment, a kind for the treatment of fluid of fine granularity that is vaporific or dispersion can be sprayed.Some equipment described in the invention is particularly suitable for using in the equipment that can be inserted by small-bore pipeline, for vaporific fluid is applied in patient body.

Background technology

The exercise question that the structure and working principle of some exercisable atomizers has licensed to the people such as PerryW.Croll on March 2nd, 2004 is be described in the United States Patent (USP) 6698429 of " medical science aerosol apparatus ".This patent specification is cited in this article and is incorporated to.Inventor disclose in this patent specification before be state-of-the-art prior art in this field of atomizer assembly of disposal type for the research of miniature atomising nozzle, such atomizer assembly has little cross section and can be inserted in therapeutic medical pipe or hole to make them.

Comprise a socket formed by injection molding according to the assembly of the nebulizer of the announcement framework of the people such as Croll, on it, viscosity connects a prolongation tubular part.Injection patternmaking process effectively limits the size (such as diameter) of this type of socket that can reliably produce.The thinnest wall thickness of the socket formed by injection molding is approximately 0.015 inch (0.381 millimeter).Therefore the diameter of an attainable minimum socket is 0.030 inch (0.76 millimeter), is greater than the external diameter of elongate member.The socket external diameter of maximum diameter of section even than minimum of the atomizer assembly disclosed by the people such as Croll is large.

The patent of invention description the 5th of the people such as Croll arranges, the capable exposure of 47-56, the nominal diameter D of nozzle body _bbe 0.2 inch (0.5 centimetre), the diameter D of columniform elongate catheter _ebe approximately 0.1 inch (0.25 centimetre).Therefore the main part diameter of nebulizer and the ratio (D of elongate member diameter _b/ D _e) be 2.0.Directly measure display more accurately to a kind of commercially available corresponding product, the main part maximum gauge of nebulizer is 0.218 inch (0.55 centimetre), the diameter of elongate member is 0.121 inch (0.3 centimetre), D _b/ D _eratio be 1.8.The corresponding numerical value of product as commercially available in the another kind shown in description of the invention Fig. 3 of the people such as Croll is respectively 0.188 inch (0.5 centimetre) and 0.119 inch of (0.3 centimetre), therefore D _b/ D _eratio be 1.6.In theory, when the diameter of atomizer diminishes, or elongate member becomes large, and the diameter in nebulizer body portion and the ratio of elongate member diameter should trend towards 1.But, due to the existence of socket, the diameter of the atomizer assembly disclosed by ' 429 patent specifications can not occur the ratio of nebulizer body portion diameter and elongate member diameter be 1 or be less than 1 situation.

A front end face, or front-end cross-sectional view can be defined as and makes object straight-line pass and must arrange the area of the fluid section moved in a fluid.Another consequence of the socket that injection molding is formed is, as sign size (the such as diameter D of the front-end cross-sectional view of an atomizer assembly main part _b, or the span of a maximum sized front end face) when to reduce to a desirable little sign size or to be reduced to less than a desirable little sign size, the diameter D of a circular atomiser body _bwith the diameter D of a circular elongate member _eratio inevitably away from 1 (in other words, D _b/ D _ethe ratio 1 become is increasing).

In this application, a nebulizer with desirable little sign size refers to that a circular body portion diameter is less than 0.2 inch (0.5 centimetre).In this instance, adopt the wall thickness of minimum socket and the main part diameter of 0.2 inch (0.5 centimetre), then the ratio of circular nebulizer body portion diameter and circular elongate member diameter is 0.2/0.17 or 1.176.When the wall thickness of socket being remained on the minima of the part that is formed by injection molding, and when reducing the diameter of assembly, D _b/ D _eratio inevitably increase (being increased to larger than 1.176).If the diameter of elongate member self is done, less (socket wall thickness is done larger than minima 0.015 inch (0.038 centimetre), and nebulizer body portion diameter remains on 0.2 inch (0.5 centimetre)), then the increase (being increased to larger than 1.176) that the diameter of the main part of nebulizer and the diameter ratio of elongate member also can be corresponding.

Atomizer assembly can pass through atomizing component main element diameter D sometimes _bwith the ratio of jet O diameter (or D _b/ O) represent its feature.Jet usual all smaller (such as diameter is about 0.010 to 0.008 inch (0.0254 to 0.02032 centimetre)) is reasonably atomized result to produce enough pressure drops in order to produce one, but jet also needs enough large to ensure the flow velocity of a rational therapeutic fluids and to prevent from blocking.It is generally acknowledged that the nominal diameter that is rationally restricted to of exercisable jet size is approximately 0.010 to 0.008 inch (0.0254 to 0.02032 centimetre).

Self-evidently, a given jet size, main part diameter D _bless, D _bthe ratio of/O is less.The D that main part nominal dimension 0.2 inch (0.5 centimetre) and the jet diameter of aforesaid 0.008 and 0.10 inch produce _bthe ratio of/O is respectively 25 and 20.Use commercially available minimum diameter to be the main part of 0.188 inch (0.478 centimetre) and diameter to be the jet (its size is larger than usually using the hole with 0.008 inch of (0.02032 centimetre) diameter in the device) of 0.010 inch (0.0254 centimetre), D _bthe ratio of/O is 18.8.We believe the existing nebulizer technologies of all exposure, its D _bthe ratio of/O is all large than 18.8.

The feature of atomizer assembly can be represented by the external diameter of an elongate member (or maximum sign size) and a ratio of discharging the diameter of the jet for the treatment of fluid sometimes.In order to be atomized the fluid of the dosage that makes up a prescription suitably, need a specific minimum fluid pressure.The overall diameter of an elongate catheter must provide the integrity of structure enough greatly to resist the treatment fluid pressure of assembly atomization portion upstream.According to the description of the people such as Croll, some elongate catheter also can comprise one or more extra inner chamber, and can be used for accommodation one wherein can deformation element, so the diameter of elongate member even may be larger.The jet size of the corresponding commercially available atomizer assembly described with Fig. 3 and Fig. 6 in the patent of invention description of the people such as Croll is respectively 0.008 inch (0.0203 centimetre) and 0.010 inch (0.025 centimetre).According to disclosed by the patent of invention description of the people such as Croll, the diameter of elongate member that medical pipe that is 1/8 inch (0.32 centimetre) by nominal diameter is formed and the ratio of jet diameter are 15.6 in Fig. 3 embodiment, are 12.5 in Fig. 6 embodiment.The corresponding ratio using aforementioned direct measurement size to produce for commercially available elongate member diameter is respectively 14.88 and 12.11.One is given to the jet of sizing, increase the maximum sign size of elongate member, the maximum sign size " D of elongate member _e" naturally increase with the ratio of the size " O " of the jet of nozzle.For all prior art, D _ethe ratio of/O is all greater than 12.

For non-circular atomizing component (and/or elongate member), use their maximum sign size can calculate similar ratio, the such as ratio of the diameter in nebulizer body portion and the diameter of elongate member, or the ratio of the diameter of elongate member and the diameter of jet, or the ratio of the diameter of main part and the diameter of jet.Therefore, in the application, maximum sign size and diameter may be employed interchangeably sometimes.Conveniently, word " maximum " may be omitted sometimes, but its appropriate meaning can logically be inferred in the past hereinafter.

The shoulder that one is positioned at atomizing component near-end and elongate member seam is comprised according to the atomizer modular construction that the people such as Croll describe in its patent specification.It is effective shoulder projection of 0.015 inch (0.038 centimetre) that the minimal wall thickness of the socket for receiving elongate member reliably can prepared by the mode of injection molding defines minimum.In practice, in business, larger shoulder size in obtainable product, may be had.The shoulder of atomizer assembly (from the external diameter of elongate member) stepped change in height defines and scratches edge, when this atomizer assembly is extracted out in patient body, may damage the tissue in patient body.

After injected therapeutic dose in patient body, when taking out nozzle, nozzle may engage with miscellaneous part.Such as, the shoulder of the stepped change of socket may form structure engaging at a distal part opening of medical tube, hinders atomizer assembly to reenter body.If apply at the near-end of elongate member the engaging that an external force causes to remove above-mentioned shoulder, then can increase the risk that atomizer assembly and elongate member depart from.And the disengaging of atomizer assembly being retained in patient body is harmful to very much.

Socket must provide enough bonding areas to prevent the effect of the pressure required for nebulisation operation, atomizing component to be departed from from elongate member.In other words, the composition surface that the fit interface at a simple interface between atomizer assembly and elongate member provides is too little and can not form one and connect reliably, is at least like this in the assembly of small size (maximum cross-sectional diameter is approximately 0.2 inch (0.5 centimetre) or less).Further, binding agent is used can to introduce the danger of the infraction caused by fluid transfer conduit binding agent on socket surface.Due to the reason described in this section and upper several sections, in existing nebulizer, the external diameter (or maximum sign size) of an elongate member and the ratio of jet diameter are greater than 12.

The atomizer assembly of some disposal type is known to people, although the maximum main part diameter of these assemblies is excessive, as being greater than 0.2 inch (0.5 centimetre).The atomizer assembly cost being meant to an equipment of " disposal type " is very low and can abandon after a single use.Certainly, " single use " can comprise the repeatedly discharge of the multiple part for the treatment of fluid.But " disposal type " atomizer assembly is not generally again sterilized and packaging is again sold and/or is used in different patient again.Disposal type atomizer assembly is produced by using cheap mass production techniques, such as, use the injection molding mode of plastics or similar plastics material.But not the atomizer of disposal type may use metal one-time manufacture, or small lot batch manufacture.The producing cost of disposal type atomizer assembly, comprises labour force and Master Cost, according to value of the dollar in 2009, it is still further preferred that be less than 1 dollar, is preferably less than 10 dollars, must be less than 100 dollars.

Summary of the invention

Disclosed herein the atomizer in the catheter of a be inserted into minor diameter that front end face is less.In a preferred embodiment, the sign size (such as cross-sectional diameter) of the main part of atomizer main part assembly is less than 0.2 inch (0.5 centimetre).The main part of nozzle is connected in an elongate member, and elongate member can have horizontal flexibility can pass a body along non-directional path to make a nozzle body.Some elongate member can also be that plasticity can deformation, to control the injection direction of nebulae inhalation fluid.Elongate member can have suitable length.The overlap joint joint portion that nozzle body generally engages with nozzle body outer surface by one is connected to an elongate member.Preferred embodiment has the D being less than 12.0 _e/ O ratio, is less than the D of about 18 _b/ O ratio and the D being less than about 1.1 _b/ D _eratio.Some embodiment comprises the spin chamber that is positioned at jet upstream next-door neighbour's jet, and comprises and have one by the near-end locular wall of the part of fluid humidifying, this by the part of fluid humidifying at least close to a part or other curved surface of a dome.

Correspondingly, the disposal type atomizer assembly of a kind of improvement that what the application introduced is, it is very little and can not hold the medical catheter of known minimum existing disposal type atomizer that it can insert a kind of internal diameter.The application also describes a kind of atomizer is less than 0.015 inch (0.038 centimetre) interface shoulder transition to the increase of elongate member seam radial dimension.The application also describes a kind of insertion in patient body and the combination of therefrom extracting out and can reduce to the disposal type atomizer assembly of the traumatogenic risk of patient and elongate member further.The risk that atomization member and elongate member depart from when nebulizer is extracted out in patient body is also further reduced.The application also describes a kind of atomizer assembly with higher motive effect of fluid.

Accompanying drawing explanation

What illustrate in accompanying drawing is several most preferred embodiments in the present invention:

Fig. 1 is the plan view of the fluid discharging apparatus according to principle of the invention structure;

Fig. 2 be comprise one with the plan view of the device of fluid discharging apparatus similar shown in Fig. 1, it is combined with a chest catheter instrument;

Fig. 3 is the sectional view of the far end of Fig. 2 shown device, and the far-end of this fluid discharging apparatus is inserted into the far-end of this catheter instrument;

Fig. 4 is the decomposing schematic representation of the device of one embodiment of the invention;

Fig. 5 is the part sectional view in the assembled state of device embodiment illustrated in fig. 4;

Fig. 5 A is the partial enlarged drawing of the partial devices shown in Fig. 5;

Fig. 6 is the view at near-end visual angle of an Exemplary atomization device main body according to principle of the invention structure;

Fig. 7 is rearview embodiment illustrated in fig. 6;

Fig. 8 is 8-8 section sectional view in the direction of the arrow in Fig. 7;

Fig. 9 is 9-9 section sectional view in the direction of the arrow in Fig. 7;

Figure 10 is the sectional view of another embodiment according to principle of the invention structure;

Figure 11 be embodiment illustrated in fig. 10 in the enlarged partial sectional view of partial devices.

Detailed description of the invention

Described below is a kind of such as, for assisting some medical procedure to apply to treat fluid, anaesthetic, equipment and method.According to principle of the present invention, the use of this equipment includes but not limited to: to the endotracheal intubation of conscious patient; Lung treatment; Intranasal administration; The antibiotic administration in hole chamber; Laryngotracheal administration to anaesthetize vocal cords before intubate; Dye endoscopy and by the attached pipe administration of endoscope to act on gastrointestinal mucosa; The integrated intubation of respiratory tract; At the far-end feed surface activator of endotracheal tube with the pulmonary administration to neonatal patient; By the antibiotic of endotracheal tube to tracheostoma patient lungs or the administration of other drug; The hemopexin of losing blood for performing the operation in open surgery or laparoscopic surgery or the administration of hemorrhage; Analgesic in open surgery or laparoscopic surgery, as the administration of bupivacaine or other fluids.

Preferably fluid discharging apparatus is configured to be atomized the treatment fluid of discharging at present.The fluid being meant to discharge of " fluid that atomization is discharged " is to be scatter containing the cardinal principle mist of very little microdroplet or the form of cloud form.The design variable of an atomizer comprises: the sign size of jet, is applied to the pressure size of jet upstream, and the eddy flow cavity configuration causing fluid rotary is arranged.Effective atomization needs fluid pressure drop at jet place of will discharge.And the fluid be discharged has a component motion rotated along injection direction axis.Rotate faster, the radial distribution of the cloud be discharged is larger.

Shown in Fig. 1, first allotter 100 being preferably used for distributing treatment fluid comprises a hydrodynamic source, and unification is denoted as 102, and a distributing nozzle, and unification is denoted as 104.In Fig. 1, hydrodynamic source 102 is needle tubings, but other the device of fluid pressure that can effectively cause can replace use.In addition, tank that is that also can pressurize by or that exert pressure in advance, or a device as water pipe or hose bib carrys out accommodating fluid.Distributing nozzle 104 is fluid atomizing nozzle, can be used for spraying treatment fluid that is vaporific or cloud form.This atomizer made fluid rotate around jet axis before fluid is ejected by a small diameter bore.The fluid of the rotation be discharged by experiencing a pressure drop during tap, and is effectively atomized.

As shown in Figure 1, an elongate member 106 can be connected between distributing nozzle 104 with hydrodynamic source 102.Adapter 108 is connected with nozzle 104, and the treatment fluid that hydrodynamic source can be provided delivers to nozzle 104.This adapter 108 comprises removable Rule female coupling and is connected with the counter structure of needle tubing 102.The near-end of elongate catheter 106 can use some known technologies, as bonding or welding, engages with adapter 108.

Available elongate member 106 is a medical tube, and such as diameter is approximately the lucite pipe of 0.060 inch (0.152 centimetre).The general cross section of such elongate catheter 106 is flexible, therefore can form illustrated roll.Elongate catheter 106 can make the structure can inserted along medical tube intracoelomic cavity, or can be inserted into the structure of pipeline in people or animal body.In this case, the horizontal flexibility of elongate catheter 106 can help it to insert and be contained in a non-directional inner chamber or pipeline.But the flexibility of elongate catheter 106 is non-essential.In some cases, elongate member can be substantially hard.Sometimes, as said below, elongate member can comprise a plastic extension portion, and it can help conduit to maintain the shape of a deformation.In the latter cases, extension can remain on a desirable shape elongate catheter, with the direction of Control Nozzle injection axis 110 effectively.

Fig. 2 shows according to one of principle of the invention structure elongated atomizing fluids induction system, and unification is denoted as 112.Some this type systematic 112 is used to coordinate with catheter such as endotracheal tube 114.Fluid delivery system 112 comprises an elongate member 106 between an adapter 108 and a distributing nozzle 104.The lid 116 of an elongate member 106 hermetic penetrant branch transition device 118 slidably, can insert to make distributing nozzle 104 or draw back in inner chamber 120.As shown in the figure, elongate member 106 can carry out the insertion depth of subcarrier label assignments nozzle 104 in endotracheal tube 114 and in patient body with a mark structure 122.

Fig. 3 shows distribution ducts 104 and is inserted into position close to endotracheal tube 114 far-end 150.As shown in the figure, preferably, treatment fluid sprays with cloud form form 152, and the trans D of cloud form structure is larger than the trans D of endotracheal tube 114.Local anesthesia can be applied thus to aid in the catheterization procedure of endotracheal tube 114.

One preferably can form the mode of distributing nozzle 104 shown in Fig. 4.Atomizer assembly 156 is connected with elongate catheter 160 by adapter 164.The pipeline that feasible connection can have the wall of relative thin by one is formed.Available tubing comprises a polyimide tube for compacting, and its outer nominal outside diameter is generally about 0.069 inch (0.18 centimetre), and nominal bore diameter is about 0.0615 inch (0.156 centimetre).Such tubing can be buied from the IWG high-performance conduit company graceful from South Carolina, United States mattress.

The external diameter of described nebulizer body 168 (in Fig. 4) is made into a certain size can be slidably matched with the inside formation of inner chamber 172.Similarly, the external diameter of elongate member 164 and inner chamber 172 adapt to be formed and are slidably matched.Because main body 168 and elongate member 106 have identical diameter, the ratio of Db/De is 1.When assembling, the distal portion of adapter 160 and main part 168 and elongate member 164 defines one and overlaps joint portion.These assemblies are by binding agent, and the adhesive that such as UV treatment is crossed or other applicable binding agents forming resistance to compression resist fluids, be bonded together.Therefore be restricted to by the treatment fluid of fluid transfer conduits 176 and flowed out by the far-end of jet 180.

Fig. 5 shows assembly shown in Fig. 4 and is grouped together.Ideally, a ring taps 184 is formed by binding agent 188.Ring taps 184 helps prevent atomization main part 184 to depart from from an installation site of adapter 164 when providing and delivering treatment fluid.Preferably, the far-end of binding agent 188 or atomization main part 168 forms the blunt sharp structure of distributing nozzle 104 far-end.

Preferably, binding agent 188 forms a transitional slope 192 at the near-end of adapter 164.Such transitional slope can prevent in the process of extracting nozzle 104 out that (one that is formed by the thickness of adapter 164 little shoulder) is unexpected to be engaged.The tissue that a smooth transitional slope 192 can prevent from scratching in patient body in pipeline structure.Smooth transitional slope 192 also can avoid when this nebulizer 104 is extracted out from a catheter ideally and the shoulder structure of the distal openings of catheter disturbs.

Composition graphs 5 and Fig. 5 A, swirling chamber 196 (being sometimes referred to as " turbine room ") is close to the upstream being placed on fluid jet mouth 180.The proximal end face of swirling chamber 196 is formed by wall unit 200, and it is a spheroid in the illustrated embodiment in which.In the preferred embodiment, ball 200 is pressed together in receiver hole 204.Preferably, in a part for ball with form pressing structure between the shoulder 208 of main part 168.Therefore the structure shown in Fig. 5 A has a little overlap at turning 208 place.Foregoing description is only used to a better assembling mode of the present invention is described.Because wall unit advances to swirling chamber 196 by fluid flowing naturally, such as, so wall unit 200, a spheroid, is feasible with being slidably matched of receiver hole 204.Preferably, wall unit 200 is configured to make fluid to enter into swirling chamber 196 in the mode impelled it produced rotation before ejection.

According to Fig. 5 A, the part of the near-end wall of swirling chamber 196 extends along a distal portions of one or more fluid passage 212.2 fluid passages 212 have been used in the present embodiment.A fluid passage 212 or multiple fluid passage can certainly be used.Ideally, when a vector perpendicular to the fluid contact surfaces of wall unit 200 advances from the proximal location of swirling chamber 196 (representing with vector 216) along a flow-guiding surface through a centre position (representing with vector 216 ') terminad position (with vectorial 216 " represent) time, this vector is tapering to a sensing distal direction substantially in the sensing from transverse direction substantially.Such transformation adds by main part 168 and wall unit, such as wall unit 200, the flow dynamic characteristic of the discharge nozzle of formation.

As mentioned above, wall unit can be formed by ball element, such as a ball.Wall unit can be a curve part on a cylinder far-end, or other difform carrier.Preferably wall unit 200 is formed by a series of 316 stainless steel balls at present, and the external diameter of this stainless steel ball is 1/32 inch (0.76 centimetre), can obtain from website www.precisionballs.com.Certainly, other synthin also can be used.

The detailed features in an available nebulizer body portion 168 is introduced referring now to Fig. 6-8.As shown in Figure 6 and Figure 7, treatment fluid distally flows along fluid passage 212, then enters into swirling chamber 196 by turbine port 220.The fluid that swirling chamber is 196 li is defined between wall unit (not shown) and the surface 224 in conical outlet portion.Therefore then fluid rotary leaves jet 180 by swirling chamber 196.

Figure 10 Figure 11 describes another nebulizer package assembly 240 of the present invention.Package assembly 240 comprises an atomizer 104, is provided with elongate member 106 ' between this nozzle and adapter 108.The external diameter of a schematic elongate member 106 ' is approximately 1/8 inch (0.3 centimetre).Different from embodiment 100 (shown in Fig. 4 and Fig. 5), the installation in the nebulizer body portion 168 of package assembly 240 is completed by the clinch of directly formation between the outer surface of main part 168 and the inner surface of fluid transfer conduits 176.

Note, D in the embodiment shown in Figure 10 and Figure 11 _b/ D _eratio be less than 1.This feature is different from all atomizers designed before.Atomization main part 168 external diameter be 0.060 and elongate member nominal outside diameter be in the combination of 1/8 inch (0.3 centimetre), can D be drawn _b/ D _evalue be 0.48.In this nebulizer body, employing nominal dimension is the jet of 0.008 inch (0.02 centimetre), the D obtained _b/ O ratio is 7.5.If jet is increased to 0.010 inch (0.254 centimetre), ratio even can be less than 6.0.Compare, as aforesaid, the D of all existing atomizers _b/ O ratio is all greater than 18.8.

The overall diameter in nebulizer body portion 168 can produce for bearing any ideal dimensions of coming.Preferably, be made up of medical grade plastic, such as polycarbonate, adopt the mode of injection molding to prepare nebulizer body 168.Certainly, the interior diameter of fluid transfer conduits 176 should in the same size with main part 168, to allow assembling.Ideally, main part 168 and the inside of fluid transfer conduits 176 form a light pressing and coordinate, and can contribute to assembling like this.Similar with package assembly 100, a ring 184 can be formed with sticker 188 and prevent main part 168 from departing from from inner chamber 176.Although circle is relatively simple for structure, main part 168 and conduit 176 must not be circular.

The elongate member of some assembling thing optionally can comprise a plastic extension portion, it can help fluid transfer conduits 176 to remain on the shape of a specific deformation, and therefore can control the direction (see Fig. 3 axis 110) of fluid discharge axis line 110.As shown in Figure 10 and Figure 11, a malleable metal wire 244 is placed in the second inner chamber of elongate member 106 '.At least one end of metal wire 244 and elongate member are fixed to prevent it from moving from assembling position.Fix preferably by bonding mode at present.

Metal wire 244 can by desirable mode deformation, to determine the discharge direction of the treatment fluid be atomized.One can the element of deformation also can coordinate with elongate member in another way, such as by providing a plasticity can the extension element of deformation, pasting one at the outer surface of elongate member can deformation element, outer surface around elongate member arranges a spiral can deformation element, put a malleable element in fluid delivery conduit 176 inside, or the mode adopting other existing technical staff to know realizes.

Preferably, an elongate member, elongate member 106 ' such as, provide a blunt sharp structure 248.Mill pin or other conventional machining process can be used to make a desirable blunt sharp structure 248.

The propelling of the needle tubing 102 shown in Fig. 1 can drive the fluid in it to flow through parts 106 and nebulizer portion 104.

The above, it is only preferred embodiment of the present invention, not any pro forma restriction is done to the present invention, every above embodiment is done according to technical spirit of the present invention any simple modification, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.The assembly that a lot of assembly commercially can obtain or can obtain commercially carries out some repackings and obtains.

Claims (9)

1. fluid atomizer, it comprises:

One is configured to the jet to a far-end jet fluid; And

Be placed in a spin chamber of described jet upstream, this spin chamber is arranged to far increase by a lateral velocity to the fluid stream of ejection to one from spin chamber, one proximal end wall of this spin chamber comprises fluid contact surface, this fluid contact level has the flow-guiding surface of a humidifying, it is configured to make a vector perpendicular to this flow-guiding surface when it advances along this flow-guiding surface from a proximal location to a remote location, is changed to basic sensing one distal direction gradually from a basic cross-directional of pointing to.

2. fluid atomizing nozzle as claimed in claim 1, wherein:

The change of this vector direction is determined by a mathematics smooth curve.

3. fluid atomizing nozzle as claimed in claim 1 or 2, wherein:

This flow-guiding surface comprises at least close to a region of a part for a dome.

4. the fluid atomizing nozzle as described in claim arbitrary in claim 1-3, wherein:

This flow-guiding surface is formed by a part for a spheroid.

5. the fluid atomizing nozzle as described in claim arbitrary in claim 1-4, wherein:

One maximum gauge of this atomizer is less than about 0.2 inch (0.5 centimetre).

6. the fluid atomizing nozzle as described in claim arbitrary in claim 1-4, wherein:

One maximum sign size of one front-end cross-sectional view of this atomizer is less than about 0.2 inch (0.5 centimetre).

7. fluid atomizing nozzle as claimed in claim 4, wherein:

The mode that one main-body structure Cheng Yiyi of this nozzle is fallen into by a near-end of this main body receives this spheroid.

8. fluid atomizing nozzle as claimed in claim 7, wherein:

This spheroid is fixed on an installation site in the mode engaged with the counter structure of this main body.

9. a method for conveyance fluid, the method comprises:

The atomizer in claim 1-8 described in arbitrary claim is used to carry described fluid.