CN111420182A

CN111420182A - Nine-hole negative pressure syringe needle

Info

Publication number: CN111420182A
Application number: CN202010349739.9A
Authority: CN
Inventors: 孙家春
Original assignee: Hefei Corista Medical Equipment Co ltd
Current assignee: Hefei Corista Medical Equipment Co ltd
Priority date: 2020-04-28
Filing date: 2020-04-28
Publication date: 2020-07-17

Abstract

The invention discloses a nine-hole negative pressure injection needle, wherein a nine-needle luer connector is in threaded connection with a nine-needle rotary table, the end part of the nine-needle rotary table is connected with a nine-needle blocking sheet and a nine-needle base and is fixed by glue adhesion, the nine-needle base is connected with nine needle tubes, a through connecting hole II in the nine-needle luer connector is communicated with the interior of the needle tubes, the nine-needle base, the nine-needle blocking sheet and a boss step part of the nine-needle luer connector which are connected into a whole are arranged in a nine-needle shell and can slide axially, the nine-needle rotary table is connected with the nine-needle shell in a buckling manner, and the; when the nine-needle turntable rotates in one direction, the nine-needle luer connector is driven to move forwards and axially, so that the nine needle tubes are synchronously exposed out of the outer end of the six conical columns of the nine-needle shell, and when the nine-needle turntable rotates in the reverse direction, the nine needle tubes simultaneously retract into the needle outlet holes of the six conical columns.

Description

Nine-hole negative pressure syringe needle

Technical Field

The invention relates to the field of beauty equipment, in particular to a nine-hole negative pressure injection needle.

Background

At present, most of the common water-light injection needles are single needles, and high-end injection products such as hyaluronic acid, collagen, botulinum toxin, PRP autologous cells and the like which are lost due to aging of a human body are injected into the dermis layer of the skin by utilizing the negative pressure principle, so that sufficient water is absorbed and stored in the skin to wake up the cell regeneration function, the withered and broken cells of the skin are restored, and the firmness, smoothness and elasticity of the skin are reconstructed in a short period. The structure of the single needle type is more conventional, during injection, the skin can be penetrated after sinking due to the instant when the needle contacts the skin during single needle injection, and the sinking degree is different according to different injection areas, so that the injection depth cannot be accurately controlled, and certain potential safety hazard exists; meanwhile, when a professional holds the injector to insert the injection needle on the water injection needle into the skin of a human body, the skin can sink downwards under the pressure of the needle in the process that the needle is inserted into the skin, the needle can penetrate the skin to enter the subcutaneous part under the action of enough downward external force of the needle, the skin can rebound, the similar needle inserting depth is not controlled well, and the pain of the human body is large.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a nine-hole negative pressure injection needle, wherein a nine-needle luer connector of a nine-needle injection needle body is in threaded connection with a nine-needle rotary table, the end part of the nine-needle connector is connected with a nine-needle blocking sheet and a nine-needle base and is fixed by glue adhesion, the nine-needle base is connected with nine needle tubes, a through connecting hole II in the nine-needle luer connector is communicated with the inside of the needle tube, liquid in the injector flows into a flow channel from a liquid inlet hole II and then enters a needle hole of the needle tube from a through hole IV and is output, boss step parts of the integrally connected nine-needle base with the needle tube, the nine-needle blocking sheet and the nine-needle luer connector are arranged in the nine-needle shell and can axially slide, the nine-needle rotary; when the nine-needle turntable rotates in one direction, the nine-needle luer connector is driven to move forwards and axially, so that the nine needle tubes are synchronously exposed out of the outer end of the six conical columns of the nine-needle shell, and when the nine-needle turntable rotates in the reverse direction, the nine needle tubes simultaneously retract into the needle outlet holes of the six conical columns.

In order to achieve the purpose, the invention provides a nine-hole negative pressure injection needle which comprises a nine-needle injection needle body 1, wherein the nine-needle injection needle body is provided with a nine-needle luer connector, the lower end of a flange of the nine-needle luer connector is provided with a connecting pipe, the upper end of the flange is an extension section, the upper end of the extension section is provided with an external thread, the upper end of the external thread is provided with a convex step, the upper end of the convex step is provided with a step II, the connecting pipe of the nine-needle luer connector is internally provided with a connecting hole II, the connecting hole II is communicated with a liquid inlet hole II at the upper end, the liquid inlet hole II is communicated with a main liquid outlet hole at the upper end, the liquid outlet hole upwards penetrates through the upper end face of the step II, the upper end face of the step II is provided with four crossed flow;

the lower end of a rotary table main body of the nine-needle rotary table is provided with a lengthened step, a screw hole is formed in the lengthened step, the upper end of the screw hole is provided with a third counter bore, a plurality of buckles are uniformly distributed on the upper edge of the inner part of the third counter bore, and an oblique angle is formed at the inlet end of each buckle; the screw hole of the nine-needle rotary table is in threaded connection with the external thread of the nine-needle luer connector, and the buckling direction of the nine-needle rotary table is consistent with the flow channel direction of the nine-needle rotary table;

a square hole V with a downward orifice is formed in a needle seat main body of the square nine-needle seat, nine conical cylinders V are uniformly distributed on the upper end face of the needle seat main body, fixing needle holes are formed in the conical cylinders V, the lower ends of the fixing needle holes are communicated with the square hole V, needle tubes are arranged in the fixing needle holes, nine-needle separation blades are arranged in the square hole V, and the needle tubes and the fixing needle holes are glued and fixed by glue;

nine crossed bosses IV in a shape like a Chinese character 'mi' are uniformly distributed on the upper end surface of the square nine-needle baffle plate, a through hole IV is formed in each boss IV, and the through holes IV are communicated with four crossed flow passages which are concave inwards on the lower end surface of the nine-needle baffle plate;

the nine-needle separation blade is arranged in the square hole five of the nine-needle base, the four end faces of the lug boss are attached to the bottom of the square hole five, and the periphery of the nine-needle separation blade is fixed with the inner wall of the square hole five through glue;

the boss step end face of a nine-needle luer connector in threaded connection with the nine-needle turntable is attached to one end face of a nine-needle blocking piece, the flow channel four of the nine-needle blocking piece is in butt joint with the flow channel opening of the boss step end face to form a closed space, the main liquid outlet hole is communicated with the through hole four in the middle of the nine-needle blocking piece, and the periphery of the boss step of the luer connector is fixed to the inner wall of the square hole five through glue;

the needle tube is fixedly connected with the needle fixing hole of the nine-needle seat through a connecting hole II, a liquid inlet hole II, a liquid outlet hole and a flow channel, and the needle tube is fixedly connected with the flow channel IV and the through hole IV of the nine-needle retainer through the nine-needle luer connector;

the needle-free type nine-needle shell comprises a main body, wherein a step is arranged at the lower end of the main body of the nine-needle shell, a flange type connecting step is arranged on the outer circumference of the step, the inner end face of the connecting step is in a right angle, a six inclined opening is arranged on the outer end face of the connecting step, a square bin is arranged at the upper end of the main body, nine upwards extending conical columns are uniformly distributed in the square bin, a negative pressure bin is formed between the six conical columns and the four walls of the square bin, a negative pressure pipe extending outwards is arranged on the outer wall of the square bin, a negative pressure hole in the negative pressure pipe is communicated with the negative pressure bin in the square bin, a needle outlet hole is formed in the;

the nine-needle stand and the nine-needle blocking piece with the needle tube and the boss step part of the nine-needle luer connector which are connected into a whole are slidably arranged in the six square holes of the nine-needle shell and can axially slide, and the buckle of the nine-needle rotary table is elastically contracted inwards and axially moved to be buckled into the connecting step of the nine-needle shell and then restored, so that the nine-needle rotary table is connected with the nine-needle shell and axially limited, and the nine-needle rotary table can rotate around the step of the nine-needle shell;

when the nine-needle turntable rotates in a single direction, the nine-needle luer connector screwed with the nine-needle turntable moves forwards and axially, and the axially-moving nine-needle luer connector synchronously pushes the nine-needle seat with the needle tube and the nine-needle baffle to move forwards and axially, so that the needle tube synchronously moves forwards in a needle outlet hole in the six conical column of the nine-needle shell until the needle point of the head part of the needle tube is exposed out of the outer end surface of the six conical column of the nine-needle shell;

when the nine-needle turntable rotates reversely, the nine-needle luer connector screwed with the nine-needle turntable moves backwards and retracts axially, the axially moved nine-needle luer connector synchronously pulls the nine-needle seat with the needle tube and the nine-needle baffle plate to move backwards and retract axially, so that the needle tube synchronously moves backwards and retracts in the needle outlet hole in the six conical column of the nine-needle shell until the needle point of the needle tube head exposed out of the outer end surface of the six conical column of the nine-needle shell moves backwards and retracts into the needle outlet hole in the six conical column of the nine-needle shell.

And further arranging, wherein the end surface of the conical column six is flush with the end surface of the square bin.

Further, the moving distance of the needle tube is equal to the distance L from the upper end surface of the needle seat of the nine-needle to the bottom of the square hole six of the nine-needle shell.

The nine-needle luer connector, the nine-needle blocking sheet, the nine-needle shell and the nine-needle turntable are further made of PP.

Further, the nine-needle seat is made of PC.

The needle outlet hole is a taper hole, the taper of the conical cylinder five is the same as that of the needle outlet hole, and the size of the conical cylinder five is smaller than that of the needle outlet hole.

Further, the length of the needle tube extending out of the six outer end faces of the nine-needle outer conical column is not more than 4 mm.

Further, the length of the needle tube retracted into the six outer end faces of the conical column of the nine-needle shell is not less than 1 mm.

Further, the thread pitches of the external thread of the nine-needle luer connector and the screw hole of the nine-needle turntable are both 1mm double-lead thread.

Further, the negative pressure pipe is a conical pipe with the inner end diameter larger than the outer end diameter.

The invention has the beneficial effects that: the invention can make the skin compact by negative pressure and move upwards to make the needle point of the needle tube enter the skin, and can feed medicine by nine needles simultaneously during injection, thereby reducing the injection time and being more beneficial to uniform surface coverage type injection.

Drawings

FIG. 1 is a schematic view of the present invention;

FIG. 2 is an exploded view of FIG. 1;

FIG. 3 is a schematic view of the nine needle housing of FIG. 2;

FIG. 4 is a bottom view of FIG. 3;

FIG. 5 is a top view of FIG. 3;

FIG. 6 is a schematic view of the nine-needle hub of FIG. 2;

FIG. 7 is a bottom view of FIG. 6;

FIG. 8 is a top view of FIG. 6;

fig. 9 is a schematic view of the nine-needle luer fitting of fig. 2;

FIG. 10 is a bottom view of FIG. 9;

FIG. 11 is a top view of FIG. 9;

FIG. 12 is a schematic view of the nine needle dial of FIG. 2;

FIG. 13 is a bottom view of FIG. 12;

FIG. 14 is a top view of FIG. 12;

FIG. 15 is a schematic view of the nine-needle block sheet of FIG. 2;

FIG. 16 is a bottom view of FIG. 15;

fig. 17 is a top view of fig. 15.

In the figure: the nine-needle injection needle comprises a nine-needle injection needle body 1, a nine-needle luer connector 2, a connecting hole II 201, a liquid inlet hole II 202, a main liquid outlet hole 203, a step II 204, a liquid storage hole 205, a flow channel 206, a boss step 207, external threads 208, an extension section 209, a flange 210, a connecting pipe 211, a counter bore 212, a nine-needle rotary table 3, a rotary table main body 301, a screw hole 302, an elongated step 303, a counter bore III 304, a buckle 305, a nine-needle baffle 4, a boss IV 401, a through hole IV 402, a flow channel IV 403, a nine-needle base 5, a needle base main body 501, a square hole V502, a conical column V503, a needle fixing hole 504, a nine-needle shell 6, a negative pressure pipe 601, a negative pressure hole 6011, a step 602, a main body 603, a square hole VI 604, a connecting step 605, an oblique port VI 606.

Detailed Description

As shown in fig. 1 and 2: the technical scheme of the invention is further specifically explained, the nine-hole negative pressure injection needle comprises a nine-needle luer connector 2, a nine-needle rotary table 3, a nine-needle baffle 4, a nine-needle base 5, a nine-needle shell 6 and a needle tube 7, wherein the nine-needle luer connector 2 of a nine-needle injection needle body 1 is in threaded connection with the nine-needle rotary table 3, the end part of the nine-needle luer connector 2 is connected with the nine-needle baffle 4 and the nine-needle base 5 and is fixed by glue adhesion, the nine-needle base 5 is connected with the nine-needle tube 7, a through connecting hole two 201 in the nine-needle luer connector 2 is communicated with the inside of the needle tube 7, a boss step 207 part of the integrally connected nine-needle base 5 with the needle tube, the nine-needle baffle 4 and the nine-needle luer connector 2 is arranged in a square hole six 604 of the nine-needle shell 6 and can axially slide, the nine-needle rotary table 3 is in snap-in connection with; when the needle tube 7 is adjusted to axially extend and retract, the nine-needle turntable 3 is rotated, and because the nine-needle turntable 3 and the nine-needle shell 6 are axially locked, the nine-needle luer connector 2 in threaded connection with the nine-needle turntable 3 can axially move and can drive the fixed integrated nine-needle blocking piece 4, the nine-needle seat 5 and the nine needle tubes 7 to synchronously axially move in six 604 square holes of the nine-needle shell 6, so that the function that the nine needle tubes 7 extend out of the nine-needle shell 6 and the function that the nine needle tubes 7 retract inwards into the head of the nine-needle shell 6 are achieved, the needle tubes 7 can be protected from the outside, and secondary puncture and pollution are prevented.

As shown in fig. 9, 10 and 11, a nine-needle injection needle body 1 is provided with a nine-needle luer 2, a connecting pipe 211 is arranged at the lower end of a flange 210 of the nine-needle luer 2, an extending section 209 is arranged at the upper end of the flange 210, an external thread 208 is arranged at the upper end of the extending section 209, a convex step 207 is arranged at the upper end of the external thread 208, a connecting hole two 201, a liquid inlet hole two 202 and a main liquid outlet hole 203 are sequentially arranged in the connecting pipe 211 of the nine-needle luer 2 and are communicated with each other, the liquid outlet hole 203 upwards penetrates through a middle liquid outlet hole 203 in a cross-shaped central position in four cross flow channels 206 arranged on the upper end surface of the step two 204 and is communicated with each other, counter bores 212 are arranged at the tail ends of the four flow channels 206, and in use, liquid medicine in an injector enters the four cross flow channels 206 from an infusion;

as shown in fig. 12, 13 and 14, a lengthened step 303 is arranged at the lower end of a rotating disc main body 301 of the nine-needle rotating disc 3, a screw hole 302 is arranged in the lengthened step 303, a counter bore III 304 is arranged at the upper end of the screw hole 302, a plurality of buckles 305 are uniformly distributed on the inner upper edge of the counter bore III 304, an oblique angle is arranged at the inlet end of each buckle 305, so that smooth elastic deformation can be conveniently clamped in when the nine-needle rotating disc is connected with the nine-needle shell 6, and a guiding effect during buckle type connection can be achieved; the screw hole 302 of the nine-needle rotary disc 3 is in threaded connection with the external thread 208 of the nine-needle luer 2, and the direction of the buckle 305 of the nine-needle rotary disc 3 is consistent with the direction of the flow channel 206 of the nine-needle rotary disc 3; after the needle tube 7 is assembled, the rotary motion of the nine-needle turntable 3 can be converted into the axial motion of the screwed nine-needle luer connector 2 by utilizing the transmission mode of the threads when the nine-needle turntable 3 is rotated, so that the telescopic function of the needle tube 7 is achieved.

As shown in fig. 6, 7 and 8, a square hole five 502 with a downward opening is arranged in a needle base main body 501 of a square nine-needle base 5, nine conical columns five 503 are uniformly distributed on the upper end surface of the needle base main body 501, the lower ends of needle fixing holes 504 in the conical columns five 503 are communicated with the square hole five 502, needle tubes 7 are arranged in the needle fixing holes 504 and are glued and fixed by glue, nine-needle blocking sheets 4 are arranged in the square hole five 502, and when the nine-needle base 5 moves axially, the needle tubes 7 can also move axially synchronously.

As shown in fig. 15, 16 and 17, nine crossed bosses four 401 are uniformly distributed on the upper end surface of the square nine-needle baffle plate 4, through holes four 402 are formed in the bosses four 401, and the through holes four 402 are communicated with four crossed flow passages four 403 recessed in the cross shape of the recessed lower end surface of the nine-needle baffle plate 4.

The nine-needle baffle 4 is arranged in the square hole five 502 of the nine-needle base 5, the end surface of the boss four 401 is attached to the hole bottom of the square hole five 502, and the periphery of the nine-needle baffle 4 is fixed with the inner wall of the square hole five 502 by glue; the end face of a boss step 207 of a nine-needle luer connector 2 in threaded connection with the nine-needle turntable 3 is attached to one end face of a nine-needle baffle plate 4, a flow channel four 403 of the nine-needle baffle plate 4 is in butt joint with an opening of a flow channel 206 of the end face of the boss step 207 to form a closed space, a main liquid outlet hole 203 is communicated with a through hole four 402 in the middle of the nine-needle baffle plate 4, and the periphery of the boss step 207 of the luer connector 2 is fixed with the inner wall of a square hole five 502 by glue; after the nine-needle base 5, the nine-needle baffle 4, the needle tube 7 and the nine-needle luer 2 are installed, glue is adhered and fixed into a non-detachable integral component, a connecting hole II 201, a liquid inlet hole II 202, a liquid outlet hole 203, a flow channel 206 which are communicated with a flow channel IV 403 and a through hole IV 402 of the nine-needle baffle 4 are communicated with the nine-needle luer 2, the through hole IV 402 is communicated with the needle tube 7 which is fixed in a needle fixing hole 504 of the nine-needle base 5, and liquid in the injector flows into a closed space formed by butt joint of the flow channel IV 403 and the flow channel 206 from the liquid inlet hole II 202, then enters a needle hole of the needle tube 7 from the through;

as shown in fig. 3, 4 and 5, a step 602 is arranged at the lower end of a main body 603 of the nine-pin housing 6, a flange type connecting step is arranged at the outer circumference of the step 602, the inner end surface of the connecting step 605 is a right angle, an oblique port six 606 is arranged at the outer end surface to facilitate smooth guiding and inserting when being connected with the nine-pin rotating disc 3, a square bin 610 is arranged at the upper end of the main body 603, nine upward extending conical columns six 609 are uniformly distributed in the square bin 610, a negative pressure bin 607 is formed between the conical columns six 609 and the four walls of the square bin 610, an outward extending negative pressure pipe 601 is arranged at the outer wall of the square bin 610, a negative pressure hole 6011 in the negative pressure pipe 601 is communicated with the negative pressure bin 607 in the square bin 610, a pin outlet hole 608 is arranged in the conical columns six 609, and the bottom of the pin;

the nine-needle seat 5 with the needle tube 7, the nine-needle catch 4 and the boss step 207 part of the nine-needle luer connector 2 which are connected into a whole are slidably arranged in the six square holes 604 of the nine-needle shell 6 and can axially slide, the buckle 305 of the nine-needle rotary disc 3 elastically contracts inwards and is buckled into the connecting step 605 of the nine-needle shell 6 in an axially moving mode to recover, so that the nine-needle rotary disc 3 is connected with the nine-needle shell 6 and axially limited, and the nine-needle rotary disc 3 can rotate around the step 602 of the nine-needle shell 6.

In practical application, the axial in and out of the needle tube 7 is adjusted, when the nine-needle turntable 3 rotates in one direction, the nine-needle luer connector 2 screwed with the nine-needle turntable 3 moves forwards and axially, and the axially-moving nine-needle luer connector 2 synchronously pushes the nine-needle seat 5 with the needle tube 7 and the nine-needle catch 4 to move forwards axially, so that the needle tube 7 synchronously moves forwards in the needle outlet hole 608 in the conical column six 609 of the nine-needle shell 6 until the needle point of the head part of the needle tube 7 is exposed out of the outer end surface of the conical column six 609 of the nine-needle shell 6;

when the nine-needle turntable 3 rotates reversely, the nine-needle luer connector 2 screwed with the nine-needle turntable 3 moves backwards and retracts axially, the axially moving nine-needle luer connector 2 synchronously pulls the nine-needle seat 5 with the needle tube 7 and the nine-needle baffle 4 to move backwards and retract axially, so that the needle tube 7 synchronously moves backwards and retracts in the needle outlet hole 608 in the conical column six 609 of the nine-needle housing 6 until the needle point of the head part of the needle tube 7 exposed out of the outer end surface of the conical column six 609 of the nine-needle housing 6 moves backwards and retracts into the needle outlet hole 608 in the conical column six 609 of the nine-needle housing 6.

The end face of the conical column six 609 is flush with the end face of the square bin 610, so that the conical column six 609 can be conveniently attached to the skin of a human body when being applied.

The moving distance of the needle tube 7 is equal to the distance L from the upper end face of the nine-needle holder 5 to the bottom of the square hole six 604 of the nine-needle housing 6, the value of L is variable data, in practice, when the distance of L is the minimum value, the maximum value of the outer end face of the needle tube 7 exposed out of the nine-needle holder 5 is the maximum value, in practical application, the length of the needle tube 7 extending out of the outer end face of the conical column six 609 of the nine-needle housing 6 is generally not more than 4mm, when the distance of L is the maximum value, the maximum value of the outer end face of the needle tube 7 retracting into the nine-needle holder 5 is the maximum value, and in practical application, the length of the needle tube 7 retracting into the outer end face of the.

The nine-needle luer connector 2, the nine-needle baffle 4, the nine-needle shell 6 and the nine-needle turntable 3 are made of PP (polypropylene), are odorless and nontoxic, have regular and highly crystallized structures, are heat-resistant and corrosion-resistant, have low density and are the lightest general plastic; the nine-needle stand 5 is made of PC, and has the advantages of good transparency, high mechanical strength, good toughness and heat resistance, high dimensional stability and low water absorption.

The pin outlet hole 608 is a taper hole, the taper of the conical five cylinder 503 is the same as that of the pin outlet hole 608, and the size of the conical five cylinder 503 is smaller than that of the pin outlet hole 608.

The thread pitch of the external thread 208 of the nine-needle luer 2 and the thread hole 302 of the nine-needle rotary table 3 are both 1mm double-lead threads, and the arrangement of the double-lead threads doubles the axial displacement of the nine-needle luer 2 when the nine-needle rotary table 3 is rotated for one circle.

The negative pressure pipe 601 is a conical pipe with the inner end diameter larger than the outer end diameter, so that negative pressure hoses with various apertures can be conveniently connected, and the applicability in practical application is improved.

When in use, the connecting hole II 201 of the nine-needle luer connector 2 of the nine-needle injection needle body 1 is firstly arranged on a connector of an injector which is filled with liquid such as hyaluronic acid, a water light stock solution and the like, the negative pressure tube 601 of the nine-needle shell 6 is connected with a negative pressure pump interface including but not limited to a water light gun by a negative pressure hose, then the injector which is connected with the nine-needle injection needle body 1 is connected to the water light gun, when the liquid is discharged by injection, the liquid discharge parameters of the water light gun are set and then started, the nine-needle turntable 3 is rotated to drive the nine-needle luer connector 2 to move axially inwards, the needle point of the needle tube 7 in the needle outlet hole 608 of the nine-needle shell 6 is synchronously and axially displaced to expose 2-4 mm, the conical column six 609 of the nine-needle shell 6 of the nine-needle, the needle points of the needle tubes 7 are all attached to the skin, the needle points of the needle tubes 7 elastically press the skin downwards but do not necessarily enter the skin; the water light gun is started, a negative pressure pump of the water light gun works, air in the negative pressure bin 607 of the nine-needle shell 6 is sucked out by connecting a negative pressure hose, so that the air pressure in the negative pressure bin 607 of the nine-needle shell 6 is smaller than the atmospheric pressure, at the moment, under the action of the negative pressure, the skin of a person shrinks, is compact, bounces upwards to actively enter the needle point of the needle tube 7 by 2-4 mm until the skin is attached to the end face of the conical column six 609, the liquid such as the hyaluronic acid and the original liquid of the water light are filled into the lower layer of the skin quantitatively, regularly and uniformly, the pain feeling of the skin is greatly reduced, when the needle is inserted, the negative pressure enables the skin to be compact, the needle point of the needle tube moves upwards to enter the skin, the nine-needle can be simultaneously injected during injection, the injection time is shortened, the uniform surface coverage type injection is facilitated, the safety is.

During injection, a water light gun pushes an injector to enable hyaluronic acid and water light stock solution in the injector to enter a liquid inlet hole II 202 of the nine-needle luer 2, then flow through a main liquid outlet hole 203 to enter a closed space formed by butt joint of flow channels 206 on the end faces of four convex steps 207 of the nine-needle luer 2 distributed in a shape like a Chinese character 'mi' and a flow channel IV 403 of the nine-needle baffle 4, and a central cross point and a through hole IV 402 at the tail end of the flow channel IV 403 of the nine-needle baffle 4 are sent out to enter needle holes of nine needle tubes 7 connected with nine needle fixing holes 504 of the nine-needle seat 5 to be sent out, and then the hyaluronic acid and the water light stock.

When the needle tube 7 needs to retract into the needle outlet hole 608 of the nine-needle housing 6, the nine-needle rotary table 3 is rotated reversely to drive the nine-needle luer connector 2 to move in a backward axial retraction manner, and the needle point of the needle tube 7 extending out of the needle outlet hole 608 of the nine-needle housing 6 is synchronously displaced in an axial retraction manner and retracted into the needle outlet hole 608.

The invention can also be installed on the injector and can be directly used without holding the injector by a water light gun.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.

Claims

1. Nine holes area negative pressure syringe needle, its characterized in that: contain nine needles injection needle body (1), nine needles injection needle body (1) establishes nine needles luer connector (2), connecting pipe (211) are established to flange (210) lower extreme of nine needles luer connector (2), and flange (210) upper end is extension section (209), external screw thread (208) are established to the upper end of extension section (209), protruding step (207) are established to external screw thread (208) upper end, step two (204) are established to protruding step (207) upper end, establish connecting hole two (201) in connecting pipe (211) of nine needles luer connector (2), feed liquor hole two (202) of connecting hole two (201) intercommunication upper end, feed liquor hole two (202) and upper end owner go out liquid hole (203) intercommunication, go out liquid hole (203) and upwards run through the up end of step two (204), four crisscross runners (206) are established to step two (204) up end, go out liquid hole (203) of upper end connection stock solution hole is in a plurality of crisscross centers that set up in the rice word, the tail ends of the four flow passages (206) are provided with counter bores (212);

the lower end of a turntable main body (301) of the nine-needle turntable (3) is provided with a lengthened step (303), the lengthened step (303) is internally provided with a screw hole (302), the upper end of the screw hole (302) is provided with a counter bore III (304), a plurality of buckles (305) are uniformly distributed on the inner upper edge of the counter bore III (304), and the inlet ends of the buckles (305) are provided with oblique angles; a screw hole (302) of the nine-needle rotary table (3) is in threaded connection with an external thread (208) of the nine-needle luer connector (2), and the direction of a buckle (305) of the nine-needle rotary table (3) is consistent with the direction of a flow channel (206) of the nine-needle rotary table (3);

a square hole five (502) with a downward orifice is formed in a needle seat main body (501) of the square nine-needle seat (5), nine conical columns five (503) are uniformly distributed on the upper end face of the needle seat main body (501), a needle fixing hole (504) is formed in each conical column five (503), the lower end of each needle fixing hole (504) is communicated with the corresponding square hole five (502), needle tubes (7) are all arranged in the needle fixing holes (504), nine-needle blocking pieces (4) are arranged in the corresponding square hole five (502), and the needle tubes (7) and the needle fixing holes (504) are glued and fixed by glue;

nine crossed bosses four (401) in a shape like a Chinese character 'mi' are uniformly distributed on the upper end surface of the square nine-needle baffle plate (4), a through hole four (402) is formed in the boss four (401), and the through hole four (402) is communicated with four crossed runners four (403) in the shape like the Chinese character 'mi' and concave in the lower end surface of the nine-needle baffle plate (4);

the nine-needle blocking piece (4) is arranged in a square hole five (502) of the nine-needle base (5), the end face of a boss four (401) is attached to the bottom of the square hole five (502), and the periphery of the nine-needle blocking piece (4) is fixed with the inner wall of the square hole five (502) through glue;

the end face of a boss step (207) of a nine-needle luer connector (2) in threaded connection with a nine-needle turntable (3) is attached to one end face of a nine-needle baffle plate (4), a flow channel four (403) of the nine-needle baffle plate (4) is in butt joint with an opening of a flow channel (206) of the end face of the boss step (207) to form a closed space, a main liquid outlet hole (203) is communicated with a through hole four (402) in the middle of the nine-needle baffle plate (4), and the periphery of the boss step (207) of the luer connector (2) is fixed with the inner wall of a square hole five (502) through glue;

after the nine-needle seat (5), the nine-needle baffle plate (4), the needle tube (7) and the nine-needle luer connector (2) are installed, glue is adhered and fixed to form a non-detachable integral assembly, a connecting hole II (201), a liquid inlet hole II (202), a liquid outlet hole (203) and a flow channel (206) which are communicated with a flow channel IV (403) and a through hole IV (402) of the nine-needle baffle plate (4) are communicated in the nine-needle luer connector (2), the through hole IV (402) is communicated with the needle tube (7) which is fixed in a needle fixing hole (504) of the nine-needle seat (5), and liquid in the injector flows into a closed space formed by butting the flow channel IV (403) and the flow channel (206) from the liquid inlet hole II (202) and then enters a needle hole of the needle tube (7);

the negative pressure needle comprises a nine-needle shell (6), wherein a step (602) is arranged at the lower end of a main body (603), a flange type connecting step (605) is arranged on the outer circumference of the step (602), the inner end face of the connecting step (605) is a right angle, a bevel six (606) is arranged on the outer end face of the connecting step (605), a square bin (610) is arranged at the upper end of the main body (603), nine upwards-extending conical columns six (609) are uniformly distributed in the square bin (610), a negative pressure bin (607) is formed between the conical columns six (609) and the four walls of the square bin (610), a negative pressure pipe (601) extending outwards is arranged on the outer wall of the square bin (610), a negative pressure hole (6011) in the negative pressure pipe (601) is communicated with the negative pressure bin (607) in the square bin (610), a needle outlet hole (608) is arranged in the conical columns six (609), and the bottom of the needle outlet hole (608) is communicated with the square;

the nine-needle seat (5) with the needle tube (7), the nine-needle blocking sheet (4) and the boss step (207) of the nine-needle luer connector (2) which are connected into a whole are partially and slidably arranged in a six-square-hole (604) of the nine-needle shell (6) and can axially slide, a buckle (305) of the nine-needle turntable (3) elastically contracts inwards and axially moves to be buckled into a connecting step (605) of the nine-needle shell (6) to recover, so that the nine-needle turntable (3) is connected with the nine-needle shell (6) and axially limited, and the nine-needle turntable (3) can rotate around the step (602) of the nine-needle shell (6);

when the nine-needle turntable (3) rotates in a one-way mode, the nine-needle luer connector (2) screwed with the nine-needle turntable (3) moves forwards and axially, the axially-moving nine-needle luer connector (2) synchronously pushes the nine-needle seat (5) with the needle tube (7) and the nine-needle blocking piece (4) to move forwards axially, so that the needle tube (7) synchronously moves forwards in a needle outlet hole (608) in a conical column six (609) of the nine-needle shell (6) until the needle point of the head of the needle tube (7) is exposed out of the outer end face of the conical column six (609) of the nine-needle shell (6);

when the nine-needle turntable (3) rotates reversely, the nine-needle luer connector (2) screwed with the nine-needle turntable (3) moves backwards and retracts axially, the axially moved nine-needle luer connector (2) synchronously pulls the nine-needle base (5) with the needle tube (7) and the nine-needle blocking piece (4) to move backwards and retract axially, so that the needle tube (7) synchronously moves backwards and retracts in a needle outlet hole (608) in the conical column six (609) of the nine-needle shell (6) until the needle point of the head part of the needle tube (7) exposed out of the outer end surface of the conical column six (609) of the nine-needle shell (6) moves backwards and retracts into the needle outlet hole (608) in the conical column six (609) of the nine-needle shell (6) axially.

2. The nine-hole syringe needle with negative pressure of claim 1, wherein: the end surface of the conical column six (609) is flush with the end surface of the square bin (610).

3. The nine-hole negative pressure syringe needle according to claim 1, wherein the moving distance of the needle tube 7 is equal to the distance L from the upper end surface of the nine-needle holder (5) to the bottom of the square hole six (604) of the nine-needle housing (6).

4. The nine-hole syringe needle with negative pressure of claim 1, wherein: the nine-needle luer connector (2), the nine-needle separation blade (4), the nine-needle shell (6) and the nine-needle turntable (3) are made of PP.

5. The nine-hole syringe needle with negative pressure of claim 1, wherein: the nine-needle stand (5) is made of PC.

6. The nine-hole syringe needle with negative pressure of claim 1, wherein: the pin outlet hole (608) is a taper hole, the taper of the conical column five (503) is the same as that of the pin outlet hole (608), and the size of the conical column five (503) is smaller than that of the pin outlet hole (608).

7. The nine-hole syringe needle with negative pressure of claim 1, wherein: the length of the needle tube (7) extending out of the outer end face of the conical column six (609) of the nine-needle shell (6) is not more than 4 mm.

8. The nine-hole syringe needle with negative pressure of claim 1, wherein: the length of the needle tube 7 retracted into the outer end face of the conical column six (609) of the nine-needle shell (6) is not less than 1 mm.

9. The nine-hole syringe needle with negative pressure of claim 1, wherein: the thread pitches of the external thread (208) of the nine-needle luer connector (2) and the screw hole (302) of the nine-needle turntable (3) are both 1mm double-lead threads.

10. The nine-hole syringe needle with negative pressure of claim 1, wherein: the negative pressure pipe (601) is a conical pipe with the inner end diameter larger than the outer end diameter.