Medical cutter head structure, medical water jet instrument and its forming methodTechnical field
The present invention relates to for generating the forming method of the instrument of liquid jet and the instrument, specifically, being related to oneThe medical cutter head structure of kind, medical water jet instrument and its forming method.
Background technology
As shown in Figure 1, being inlet tube in existing structure 1 and the position location relational graph of screwdriver head fixing part 2, inlet tube 1 is solidDue to the outside of screwdriver head fixing part 2, when assembling is fixed with the screwdriver head fixing part 2 of inlet tube 1, forms medical water jet instrument, doctorIt is bigger than normal with water knife instrument tip size, increase the notch of operative site in surgical procedure, increase wound face, be unfavorable for operative siteRehabilitation；On the other hand, inlet tube 1 is located at the outside of screwdriver head fixing part 2, is unfavorable for time of liquid waste jet stream in surgical procedureIt receives.
The content of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of medical cutter head structure, medical water jet instrument and its shaping sideMethod.
A kind of medical cutter head structure disclosed in this paper first aspects, including：
Body part, concave surface formed Longitudinal extending the first locating slot and
Heel arranged on body part end；
The end of first locating slot extends along the bending direction of heel, and the second locating slot is formed in heel.
According to an embodiment of the present invention, in the cross section of body part, it is defined along the first locating slot groove width directionWidth is D1；In the vertical section of heel, it is D2 to define it along the width in the second locating slot groove width direction；D1 is not less than D2.
According to an embodiment of the present invention, the outside of the lateral surface of two cell wall of the first locating slot and the second locating slot cell wallFace is arcwall face.
According to an embodiment of the present invention, the lateral surface of two cell wall of the first locating slot is inclined-plane；Second locating slot is put downThe lateral surface of two cell walls of its flute length direction of row is inclined-plane.
According to an embodiment of the present invention, further include：
The first positioning bar and the second positioning bar being oppositely arranged along the first locating slot flute length direction；
First positioning bar and the second positioning bar are connected to the two side of the first locating slot；
Wherein, the wall thickness of the first positioning bar and the second positioning bar is respectively less than the thickness of the first locating slot cell wall, the two it is outerSide has a spacing with the lateral surface of cell wall being attached thereto respectively.
A kind of forming method of medical cutter head structure disclosed in this paper second aspects, using machining technique, powderMetallurgical moulding process or metal injection molding technology are molded the medical cutter head structure described in first aspect present invention.
A kind of medical water jet instrument disclosed in this paper third aspect, including：
Medical cutter head structure, connecting tube, filter described in first aspect present invention and
Inlet tube, including：The bent portion and straight sections of connection, bent portion have end socket, and end socket is equipped with spray orifice；And
Liquid back pipe, with jet stream recovery port, end is socketed in connecting tube；
Body part top is connected to jet stream recovery port；
Part tube body in straight sections close to bent portion is positioned at the first locating slot, and center section tube body is inserted in liquid back pipeInterior, tail end is pierced by connecting tube and is connected with filter；
Bent portion is positioned at the second locating slot, the opposed jet stream recovery port of spray orifice；
Wherein, inlet tube provides the access that liquid flows to spray orifice；Spray orifice sprays the liquid formation liquid jet for flowing through it,Jet stream recovery port receives the liquid jet that spray orifice sprays.
According to an embodiment of the present invention, filter includes：
Feed liquor portion, screen pack and go out liquid portion；
Feed liquor portion and go out liquid portion and be equipped with a through hole vertically, straight sections are connected with going out the through hole in liquid portion；
Screen pack is arranged on feed liquor portion and goes out between liquid portion.
A kind of medical water jet instrument forming method disclosed in this paper fourth aspects, including：
It is separately formed medical cutter head structure and connecting tube described in first aspect present invention；
Inlet tube is bent, inlet tube includes：The bent portion and straight sections of connection, bent portion have end socket, and end socket is equipped withSpray orifice；
Liquid back pipe is bent, liquid back pipe has jet stream recovery port；
Inlet tube is inserted into liquid back pipe, the center section tube body of straight sections is inserted in liquid back pipe；
Connecting tube is accessed in liquid back pipe end, straight sections tail end is pierced by connecting tube；
Medical cutter head structure is assembled, body part top is connected to jet stream recovery port, is managed in straight sections close to the part of bent portionBody is positioned at the first locating slot, and bent portion is positioned at the second locating slot, the opposed jet stream recovery port of spray orifice；
Filter is connected in straight sections tail end.
According to an embodiment of the present invention, using machining technique, powder metallurgy forming technique or metal injectionMoulding process is molded the medical cutter head structure described in first aspect present invention.
When the medical cutter head structure of the present invention is used to position inlet tube, inlet tube is arranged on the inside of medical cutter head structure, whenIt is required that medical one timing of cutter head structure size, medical water jet instrument tip size are significantly less than medical water jet instrument in existing structureThe size on top, the micromation of medical water jet instrument so as to reduce corrective surgery notch in surgical procedure, reduce wound area；AndAnd further, since the width in the first locating slot groove width direction is not less than the width in the second locating slot groove width direction, operation is worked asWhen medical water jet instrument tip stretches into corrective surgery part interior in the process, operative site notch stretches into depth with dampening knife instrumentIncrease is constant or gradual increase, be more advantageous to the rehabilitation in patient's post-surgical trauma face.
Description of the drawings
Attached drawing described herein is used for providing further understanding of the present application, forms the part of the application, this ShenSchematic description and description please does not form the improper restriction to the application for explaining the application.In the accompanying drawings：
Fig. 1 is the position location relational graph of inlet tube and medical cutter head structure in the prior art；
Fig. 2 is a structure diagram of medical cutter head structure in embodiment one；
Fig. 3 is another structure diagram of medical cutter head structure in embodiment one；
Fig. 4 is the top view of medical cutter head structure in embodiment one；
Fig. 5 is a structure diagram of medical cutter head structure in embodiment two；
Fig. 6 is another structure diagram of medical cutter head structure in embodiment two；
Fig. 7 is the top view of medical cutter head structure in embodiment two；
Fig. 8 is a structure diagram of medical water jet instrument in embodiment three；
Fig. 9 is another structure diagram of medical water jet instrument in embodiment three；
Figure 10 is another structure diagram of medical water jet instrument in embodiment three；
Figure 11 is the exploded perspective view of medical water jet instrument in embodiment three；
Figure 12 is a structure diagram of medical water jet instrument in embodiment three；
Figure 13 is another structure diagram of medical water jet instrument in embodiment three；
Figure 14 is another structure diagram of medical water jet instrument in embodiment three；
Figure 15 is the exploded perspective view of medical water jet instrument in embodiment three.
Reference sign：
1st, inlet tube；2nd, screwdriver head fixing part；3rd, medical cutter head structure；31st, body part；32nd, heel；33rd, the first positioningSlot；34th, the second locating slot；35th, the first positioning bar；36th, the second positioning bar；4th, medical water jet instrument；41st, connecting tube；411st, it is mainTube body；412nd, it is in charge of body；42nd, filter；421st, feed liquor portion；422nd, screen pack；423rd, liquid portion is gone out；424th, feed liquor portion is logicalHole；431st, straight sections；431a, the first sub- straight tube；431b, the second sub- straight tube；431c, the 3rd sub- straight tube；431d, the 4th son are straightPipe；432nd, bent portion；4321st, end socket；4322nd, spray orifice；44th, liquid back pipe；441st, jet stream recovery port；A, amplified bent portion.
Specific embodiment
Multiple embodiments of the present invention, as clearly stated, the details in many practices will be disclosed with schema belowIt will be explained in the following description.It should be appreciated, however, that the details in these practices is not applied to limit the present invention.AlsoIt is to say, in some embodiments of the present invention, the details in these practices is non-essential.In addition, for the sake of simplifying schema,Some known usual structures will illustrate it in a manner of simply illustrative in the drawings with component.
It is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute is only used in the embodiment of the present inventionIn explaining relative position relation, motion conditions under a certain particular pose (as shown in drawings) between each component etc., if shouldWhen particular pose changes, then directionality instruction also correspondingly changes correspondingly.
In addition, in the present invention such as relating to the description of " first ", " second " etc. be only used for description purpose, not especially censureThe meaning of order or cis-position, also non-to limit the present invention, the component described just for the sake of difference with same technique termOr operation, and it is not intended that indicating or implying its relative importance or the implicit number for indicating indicated technical characteristicAmount." first " is defined as a result, at least one this feature can be expressed or be implicitly included to the feature of " second ".It is in addition, eachTechnical solution between a embodiment can be combined with each other, but must can be implemented as base with those of ordinary skill in the artPlinth will be understood that the combination of this technical solution is not present when the combination appearance of technical solution is conflicting or can not realize,Also not the present invention claims protection domain within.
The present invention is to be related to the relevant design of a kind of medical cutter head structure, medical water jet instrument and its forming method.TheOn the one hand, medical cutter head structure of the invention is highly suitable in various needle holder being applied to surgery Minimallies, to position inlet tube, it is convenient intoHighly pressurised liquid is passed through in liquid pipe, patient body is respectively organized or organ is cut, melted, removed or removed etc.；Second partyFace, medical cutter head structure of the invention, which is also applied for other, to be had in be cut or punching instrument, and feed liquor is similar to positionOther feed liquor components of pipe；Certainly, medical cutter head structure of the invention can be applicable to other with various structures and variousThe liquid jet device of purpose, to position other feed liquor components.When the medical cutter head structure of the present invention is positioned into liquid pipe, formation is originallyAfter the medical water jet instrument of invention, medical water jet instrument was both used in various needle holder being applied to surgery Minimallies, can be also used for other needOn the object of cutting or punching；When the present invention medical cutter head structure position other feed liquor components, for other with various knotsWhen in structure and the liquid jet device of various purposes, according to its purpose of usage, liquid that can be to be passed through in appropriately selected feed liquor componentBody is highly pressurised liquid or common liq.In addition, the embodiment of medical water jet instrument provided by the invention can be each with outsideThe gripping member of kind construction is combined so that operator can cosily be held with hand, so as to more convenient by medical water jet instrumentFor various needle holder being applied to surgery Minimallies or other need the object of cutting and boring.To make the present invention it is more readily appreciated that four will be divided belowA specific embodiment be further described the medical cutter head structure of the present invention, medical water jet instrument and its forming method andIts caused benefit.It should be noted that in four following specific embodiments, mainly positioned with medical cutter head structureAfter inlet tube forms medical water jet instrument, medical water jet instrument is used to exemplified by various needle holder being applied to surgery Minimallies illustrate, at this point,Highly pressurised liquid is passed through in inlet tube, but this does not form limitation of the invention.When being passed through common liq, medical cutter head structureIt positions the mode of inlet tube and medical cutter head structure positions other feed liquor components and forms the benefit of water knife instrument and generation with being passed throughEssentially identical during highly pressurised liquid, simply purpose of usage is different.Herein, when liquid is highly pressurised liquid, highly pressurised liquid includes heightPress current or high pressure physiology salt current or other highly pressurised liquid streams, the species of highly pressurised liquid is according to medical water jet instrument in inlet tubeThe species or physicochemical properties for having object to be cut during work are flexibly chosen.
Embodiment one：
Please also refer to Fig. 2-4, the present embodiment provides a kind of medical cutter head structures 3.Medical cutter head structure 3 includes：BodyPortion 31 and heel 32,31 end of body part extend towards with its own direction with a certain angle, form heel 32, thisPlace angle be more than zero degree be less than 180 degree between any angle, be preferably 90 degree, heel 32 with one bendCurvature.The wherein surface of body part 31 is recessed inwardly, and forms the first locating slot 33, and 33 Longitudinal extending of the first locating slot is so-called verticalTo referring to the direction parallel with 33 flute length direction of the first locating slot.First locating slot 33 have opposite two cell walls andOne bottom wall.The end of first locating slot 33 extends along the bending direction of heel 32, and the second locating slot is formed in heel 3234, the second locating slot 34 has another cell wall that two opposite cell walls, a bottom wall and both ends are respectively connected with two cell walls.Wherein,Further, in the cross section of body part 31, it is D1 to define it along the width in 33 groove width direction of the first locating slot；Heel 32In vertical section, it is D2 to define it along the width in 34 groove width direction of the second locating slot；D1 is not less than D2, the transverse direction of so-called body part 31Section refers to, perpendicular to 33 flute length extending direction of the first locating slot, cut 31 obtained profile morphology of body part；So-called elbowThe vertical section in portion 32 refers to, along parallel to 33 flute length extending direction of the first locating slot, cut 32 obtained section of heelForm.
It please refers to Fig.2 and 3, medical cutter head structure 3 provided in this embodiment, two cell walls and second of the first locating slot 33The lateral surface of the cell wall of locating slot 34 is arcwall face, and the bending direction of the arc external side of first 33 liang of cell walls of locating slot is separateFirst locating slot, 33 cell wall medial surface is outwardly, and the bending direction of the arc external side of 34 cell wall of the second locating slot is away from secondThe medial surface of 34 cell wall of locating slot is outwardly, specifically please refers to Fig.2-3.The lateral surface of opposite two cell walls of first locating slot 33 itBetween spacing it is equal, and two cell wall lateral surfaces are arcwall face, and 31 longitudinal profile of body part is rectangle, D1=D2.Along body part31 top extends to end direction, and spacing is gradually reduced between the lateral surface of 33 opposite two cell walls of the first locating slot, and firstWhen the lateral surface of the cell wall of two cell walls of locating slot 33 and the second locating slot 34 is arcwall face, 31 longitudinal profile of body part isTrapezoidal, D1 is more than D2.
Multiple reference chart 2-4, medical cutter head structure 3 further include：It is oppositely arranged along 33 flute length direction of the first locating slotFirst positioning bar 35 and the second positioning bar 36；First positioning bar 35 and the second positioning bar 36 are connected to the first locating slot 33Two side；Wherein, the wall thickness of the first positioning bar 35 and the second positioning bar 36 is respectively less than the thickness of 33 cell wall of the first locating slot, the twoLateral surface there is a spacing with the lateral surface of cell wall being attached thereto respectively, it is preferable that the spacing is greater than or equal to medical waterThe thickness of liquid back pipe tube wall in knife instrument, the more preferably thickness equal to liquid back pipe tube wall in medical water jet instrument.First positioning35 and second positioning bar 36 of muscle is used to body part 31 being positioned in aftermentioned liquid back pipe.Wherein, body part 31, heel 32 andFirst positioning bar 35, the second positioning bar 36 are integrally formed.
In addition, in this example, machining technique, powder metallurgy forming technique or gold may be employed in medical cutter head structure 3Belong to injection molding technique shaping.
Medical cutter head structure 3 is for when positioning inlet tube 1, inlet tube 1 to be arranged on the inside of medical cutter head structure 3, when medical3 size of cutter head structure is certain, and 4 tip size of medical water jet instrument is significantly less than 4 top of medical water jet instrument in existing structureSize, medical water jet instrument micromation, so as to reduce the wound area of patient in surgical procedure；Also, due to the first locating slotThe width in 33 groove width directions is not less than the width in 34 groove width direction of the second locating slot, when medical water jet instrument 4 pushes up in surgical procedureWhen corrective surgery part interior is constantly stretched into end, operative site transverse direction wound area is constant or gradual with the increase for stretching into depthIncrease, is more advantageous to the rehabilitation in patient's post-surgical trauma face.The cell wall of the cell wall of first locating slot and the second locating slot is shaped toArcwall face or inclined-plane are conducive to the cutting of scalpel edge.
Embodiment two：
Fig. 5-7 are refer to, this example provides the medical cutter head structure 3 of another structure.When different from embodiment one, this exampleIn, the lateral surface of first 33 liang of cell walls of locating slot is inclined-plane；Two cell walls of 34 its parallel flute length direction of the second locating slotLateral surface be inclined-plane.Positioned at a wherein cell wall for the first locating slot 33 of medical 3 longitudinal profile homonymy of cutter head structure andA wherein cell wall for two locating slots 34, the lateral surface of the two are total to inclined-plane, specifically refer to Fig. 5-7.Wherein, further, edgeThe top of body part 31 extends to end direction, and spacing is gradually reduced between the lateral surface of 33 opposite two cell walls of the first locating slot,The lateral surface of first 33 liang of cell walls of locating slot is inclined-plane, and 31 longitudinal profile of body part is trapezoidal, and D1 is more than D2.
Embodiment three：
This example provides a kind of medical water jet instrument 4, with reference to figure 8-15, wherein, the medical water jet instrument 4 shown in Fig. 8-11In, medical cutter head structure 3 is identical with embodiment one；In medical water jet instrument 4 shown in Figure 12-15, medical cutter head structure 3 withEmbodiment two is identical.
In this example, medical water jet instrument 4 includes：Medical cutter head structure 3, connecting tube 41, filter 42, inlet tube 1 andLiquid back pipe 44.
Medical cutter head structure 3 is referring to embodiment one or two, and which is not described herein again.
Inlet tube 1, including：The bent portion 432 of connection and straight sections 431.Bent portion 432 has end socket 4321, end socket4321 are equipped with spray orifice 4322, referring to amplified bent portion schematic diagram A in Figure 11.Straight sections 431 have integrally formed fourCross-talk straight tube is bent to form the straight sections 431 with four cross-talk straight tubes using a tube body, such as Figure 11, the first sub- straight tube 431aOne end connects bent portion 432, and the other end connects the second sub- straight tube 431b, and the 3rd son of other end connection of the second sub- straight tube 431b is straightThe other end of pipe 431c, the 3rd sub- straight tube 431c connect the 4th sub- straight tube 431d, the first sub- sub- straight tubes of straight tube 431a and second431b has an angle, and the second sub- sub- straight tube 431c of straight tube 431b and the 3rd have an angle, the 3rd sub- straight tube 431c and the 4thSub- straight tube 431d has an angle, and four cross-talk straight tubes are respectively provided with tube wall and tube cavity.End socket 4321 is for example arc-shaped for convex surface end socketFace end socket or conical head can make the highly pressurised liquid for being passed through bent portion 432 be smoothly transitted into spray orifice 4322.Inlet tube 1 toThe flow passage that highly pressurised liquid flows to spray orifice 4322 is provided, inlet tube 1 can be made of a variety of materials, no matter select which kind of materialInlet tube 1 is made, also no matter which kind of above-mentioned mode is used to form inlet tube 1, when being passed through highly pressurised liquid, inlet tube 1 must haveEnough compressive resistances are prepared enough, so that during the work of medical water jet instrument 4, can will be conveyed with the highly pressurised liquid of pressure needed for workTo spray orifice 4322, so that spray orifice 4322 forms liquid jet, the compressive resistance of inlet tube 1 can be equal to or more than medical water jet deviceThe pressure for the highly pressurised liquid that tool 4 uses when working is preferably greater than the pressure of the highly pressurised liquid used when medical water jet instrument 4 worksPower, and medical water jet instrument 4 work when for formed the pressure of the highly pressurised liquid of liquid jet depend on spray orifice 4322 designAnd there are to be cut, ablation or the tissue or the hardness of object that eliminate or intensity etc..Inlet tube 1 can be pipe, elliptical tube, sideThe pipe of pipe or other shapes.
Liquid back pipe 44 its with jet stream recovery port 441, for recycling the liquid jet that spray orifice 4322 sprays in Minimally Invasive Surgery.The shape when shape of liquid back pipe 44 is connected with the first sub- sub- straight tube 431b of straight tube 431a and second matches.
Connecting tube 41 has main pipe 411, is in charge of body with what main pipe 411 connected equipped with one in the side wall of main pipe 411412。
Filter 42 may be employed to be designed in the prior art, alternatively, filter 42 includes：Feed liquor portion 421, screen pack422 and go out liquid portion 423；Feed liquor portion 421 and go out liquid portion 423 and be equipped with a through hole vertically, straight sections 431 and go out in liquid portion 423Through hole connection；Screen pack 422 is arranged on feed liquor portion 421 and goes out between liquid portion 423.
31 top of body part of medical cutter head structure 3 is connected to jet stream recovery port 441；The bent portion 432 of inlet tube 1 is positioned atSecond locating slot 34,4322 opposed jet stream recovery port 441 of spray orifice, close to part tube body i.e. the of bent portion 432 in straight sections 431One sub- straight tube 431a is positioned at the first locating slot 33, and the sub- straight tube 431b of center section tube body i.e. second is inserted in liquid back pipe 44, tailEnd is pierced by connecting tube 41, is located at the 3rd sub- straight tube 431c part and is in charge of in body 412, the 4th sub- straight tube 431d then with filter 42It is connected；44 end of liquid back pipe is socketed in connecting tube 41.
When medical water jet instrument 4 works, the feed liquor portion 421 of filter 42 connects external high pressure liquid supply source such as high pressurePump, the through hole in feed liquor portion 421 are in fluid communication by highly pressurised liquid transfer passage such as pressure pipe and high-pressure pump, highly pressurised liquid viaAfter high-pressure pump, screen pack 422 is flowed into from the through hole of feed liquor portion 421, by filtering, feed liquor is flowed by the through hole 424 of feed liquor portionPipe 1, highly pressurised liquid is successively from the 4th sub- straight tube 431d, the 3rd sub- straight tube 431c, the second sub- straight tube 431b, the first sub- straight tube 431aAnd the tube cavity of bent portion 432 continues to flow to spray orifice 4322, by forming the of different shapes of various needs during spray orifice 4322Liquid jet sprays, and high pressure caused by the liquid jet that spray orifice 4322 sprays can make medical water jet instrument 4 perform various surgeriesThe actions such as the cutting and boring of Minimally Invasive Surgery or various other objects, it will be appreciated by persons skilled in the art that working as medical water jetInstrument 4 be used for various needle holder being applied to surgery Minimallies when, number of types of high-pressure pump can be applied to the embodiment in, including but it is unlimitedIn piston pump and diaphragm pump；Spray orifice 4322 then has suitable shape, such as circular cross section, elliptic cross-section or rectangular sectionOr other cross sectional shapes so that the liquid of different shapes for being suitble to specifically needs can be formed when highly pressurised liquid flows through spray orifice 4322Jet stream, liquid jet can be used for cutting, ablation, stripping or each tissue of removing patient body or device in needle holder being applied to surgery MinimallyOfficial or for performing cutting or the punching action that other need cutting object.The size of spray orifice 4322, it is required according to workingThe amount of liquid jet is designed.The liquid jet sprayed from spray orifice 4322, liquid back pipe 44 is flowed by jet stream recovery port 441, is passed throughLiquid back pipe 44 flows to the main pipe 411 of connecting tube 41, and main pipe 411 can connect outside liquid retracting device, by spray orifice 4322The liquid jet recycling of ejection.
Example IV：
The present embodiment provides the moulding process of the medical water jet instrument 4 described in embodiment three.Including：
It is separately formed medical cutter head structure 3 and connecting tube 41；
Inlet tube 1 is bent, inlet tube 1 includes：The bent portion 432 of connection and straight sections 431, bent portion 432 have end socket4321, end socket 4321 is equipped with spray orifice 4322；Specifically, the tube body of an appropriate size is selected, the tube body is bent, forms it intoStraight sections 431 and bent portion 432 with four cross-talk straight tubes；
Liquid back pipe 44 is bent, liquid back pipe 44 has jet stream recovery port 441；The shape of liquid back pipe 44 and the first sub- straight tube 431aAnd shape during the second sub- straight tube 431b connections matches.
Inlet tube 1 is inserted into liquid back pipe 44, the center section tube body of straight sections 431 is made to be inserted in liquid back pipe 44；
Connecting tube 41 is accessed in 44 end of liquid back pipe, 431 tail end of straight sections is pierced by connecting tube 41；
Assemble medical cutter head structure 3,31 top of body part is connected to jet stream recovery port 441, close to bent portion in straight sections 431432 part tube body is positioned at the first locating slot 33, and bent portion 432 is positioned at the second locating slot 34,4322 opposed jet stream of spray orificeRecovery port 441；
Filter 42 is connected in 431 tail end of straight sections.
In process above, medical cutter head structure 3, shaping connecting tube 41, bending inlet tube 1 and bending liquid back pipe 44 are molded notSuccessively.
Wherein, the shaping of medical cutter head structure 3 is using machining, powder metallurgy forming technique and metal injection moldedAny one in technique.
Existing design may be employed in filter 42, can also use following moulding process：In feed liquor portion 421 and go out liquid portion423 are axially formed through hole, between setting screen pack 422 in feed liquor portion 421 and going out liquid portion 423, are fixedly connected with feed liquor portion 421And going out liquid portion 423, the tail end of straight sections 431 is pierced by connecting tube 41 and connects out liquid portion 423, and connects the through hole 424 of feed liquor portion.IntoLiquid portion 421 and go out two end faces of 423 face of liquid portion and be fixedly connected by welding.The tail end of straight sections 431 connects out liquid portion423, liquid portion 423 is preferably connected out by laser spot welding.
When inlet tube 1 is inserted into liquid back pipe 44, can the 4th sub- straight tube 431d first first be penetrated into 44 end of liquid back pipe, complete intoAfter the insertion of liquid pipe 1, bent portion 432 is positioned at the second locating slot 34, is managed in straight sections 431 close to the part of bent portion 432Body is positioned at the first locating slot 33.By laser spot welding between 432 and second locating slot 34 of bent portion, bent portion 432 is positionedIn the second locating slot 34.Pass through laser between the part tube body and the first locating slot 33 of bent portion 432 in straight sections 431Part tube body close to bent portion 432 in straight sections 431 is positioned in the first locating slot 33 by spot welding.By body part 31 at leastOne outside and 44 inner wall laser spot welding of liquid back pipe, jet stream recovery port 441 is connected to by 31 top of body part；Preferably, it is being arranged atBy laser spot welding between first positioning bar 35 of the first 33 liang of locating slot cell wall or the second positioning bar 36 and liquid back pipe 44, it incite somebody to action this31 top of body portion is connected to jet stream recovery port 441, and 44 pipe thickness of liquid back pipe is equal to 35 lateral surface of the first positioning bar with being attached theretoCell wall lateral surface between spacing.
The upper only embodiments of the present invention, are not intended to limit the invention.For those skilled in the artFor, the invention may be variously modified and varied.All any modifications made in spirit and principles of the present invention are equalReplace, improve etc., it should all be included within scope of the presently claimed invention.