CN106726564A - Molten medicine pin - Google Patents
Molten medicine pin Download PDFInfo
- Publication number
- CN106726564A CN106726564A CN201611256141.5A CN201611256141A CN106726564A CN 106726564 A CN106726564 A CN 106726564A CN 201611256141 A CN201611256141 A CN 201611256141A CN 106726564 A CN106726564 A CN 106726564A
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- China
- Prior art keywords
- air
- filtering membrane
- medicine
- diameter portion
- needle stand
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
- A61J1/00—Containers specially adapted for medical or pharmaceutical purposes
- A61J1/14—Details; Accessories therefor
- A61J1/20—Arrangements for transferring or mixing fluids, e.g. from vial to syringe
- A61J1/2003—Accessories used in combination with means for transfer or mixing of fluids, e.g. for activating fluid flow, separating fluids, filtering fluid or venting
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
- A61J1/00—Containers specially adapted for medical or pharmaceutical purposes
- A61J1/14—Details; Accessories therefor
- A61J1/20—Arrangements for transferring or mixing fluids, e.g. from vial to syringe
- A61J1/2003—Accessories used in combination with means for transfer or mixing of fluids, e.g. for activating fluid flow, separating fluids, filtering fluid or venting
- A61J1/2006—Piercing means
- A61J1/201—Piercing means having one piercing end
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
- A61J1/00—Containers specially adapted for medical or pharmaceutical purposes
- A61J1/14—Details; Accessories therefor
- A61J1/20—Arrangements for transferring or mixing fluids, e.g. from vial to syringe
- A61J1/2003—Accessories used in combination with means for transfer or mixing of fluids, e.g. for activating fluid flow, separating fluids, filtering fluid or venting
- A61J1/2079—Filtering means
- A61J1/2082—Filtering means for gas filtration
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
- A61J1/00—Containers specially adapted for medical or pharmaceutical purposes
- A61J1/14—Details; Accessories therefor
- A61J1/20—Arrangements for transferring or mixing fluids, e.g. from vial to syringe
- A61J1/2003—Accessories used in combination with means for transfer or mixing of fluids, e.g. for activating fluid flow, separating fluids, filtering fluid or venting
- A61J1/2079—Filtering means
- A61J1/2086—Filtering means for fluid filtration
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- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Pharmacology & Pharmacy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention discloses a kind of molten medicine pin, its air-filtering membrane by reliably safety in molten medicine pin, and assemble easily, qualification rate it is high.A kind of molten medicine pin, including upper set, receiving compartment is provided with set on described, hub assemblies insert receiving compartment and are formed with upper set and fix, the needle tubing of hub assemblies exposes from upper set, there is gap between hub assemblies and the inwall of receiving compartment and air flue is formed, air flue be located at the venthole that puts and be connected, the hub assemblies are formed with medicine liquid channel, the upper set has the varying diameter portion perpendicular to medicine liquid channel axis, the first hole is provided with varying diameter portion, air-filtering membrane is fixed with varying diameter portion, air-filtering membrane covers the first hole, air can enter air flue through the first hole and air-filtering membrane.
Description
Technical field
The invention belongs to the technical field of the medicine equipment of class of making up a prescription, a kind of molten medicine pin is concretely related to.
Background technology
Molten medicine pin, also referred to as doser, as a kind of with medicinal medicine equipment, in dispensing operation, with syringe
The syringe collocation of pin is used.During using the molten medicine pin of the application to make up a prescription, it may not be necessary in advance to infusion bag（Bottle）Hold Deng liquid
Injection air in device, liquid can be directly extracted when in molten medicine pin insertion medical liquid container.While liquid is extracted, air passes through
Molten medicine pin enters the molten device of liquid to balance the pressure in the molten device of liquid.
At present, the Chinese invention patent application of Publication No. CN101229400A discloses a kind of doser, including needle stand,
Sleeve pipe and the syringe needle being fixed on needle stand, have liquid-through hole in syringe needle, sleeve pipe is fixed on needle stand, and described syringe needle is located at sleeve pipe
Interior and have certain gap between sleeve pipe, the sidepiece of sleeve pipe is provided with blow vent, and air-filtering membrane plug is provided with blow vent,
Being provided between sleeve pipe and needle stand is fixedly connected with both and makes sleeve pipe that the interface arrangment one of sealing is formed with needle stand.
However, in the molten medicine pin of this structure, in sleeve pipe（Upper set）Sidepiece offer blow vent, the axis of blow vent
With the axis perpendicular of liquid-through hole, air-filtering membrane is installed in sidepiece, so, the mounting axis of air-filtering membrane also with logical liquid
The axis perpendicular in hole.It is understood that because air-filtering membrane is mounted laterally, thus, air is available on sleeve pipe
The design space surplus that filter membrane is installed is smaller, in order to expand the installing space of air-filtering membrane, is adopted in above-mentioned patent document
Means are to thicken the local tube wall of sleeve pipe, if thickening excessive, the attractive in appearance of product are had a strong impact on again, therefore, Space Expanding
Also limited to.Even if the design space for being available for air-filtering membrane to install after expansion is still smaller so that air-filtering membrane is whole
Body diameter is smaller, installs inconvenient.In installation process, the often inclined angle of air-filtering membrane is put into blow vent,
And fail comprehensively to cover openings, thus trigger product percent of pass low.
The content of the invention
A purpose of the invention is to provide a kind of molten medicine pin, its air-filtering membrane by reliably safety in molten medicine pin, and
And it is high to assemble easy, qualification rate.
It is a further object of the present invention to provide a kind of molten medicine pin, its assembling process is simple.
It is a further object of the present invention to provide a kind of molten medicine pin, it can be filtered to liquid, to ensure administration safety.
In order to solve the above technical problems, the object of the present invention is achieved like this：
A kind of molten medicine pin, including upper set, receiving compartment is provided with described on set, hub assemblies insertion receiving compartment is simultaneously formed with upper set
Fixed, the needle tubing of hub assemblies exposes from upper set, has gap between hub assemblies and the inwall of receiving compartment and forms gas
Road, air flue be located at the venthole that puts and be connected, the hub assemblies are formed with medicine liquid channel, and the upper set has vertical
In the varying diameter portion of medicine liquid channel axis, the first hole is provided with varying diameter portion, air-filtering membrane, air mistake are fixed with varying diameter portion
Filter membrane covers the first hole, and air can enter air flue through the first hole and air-filtering membrane.
On the basis of such scheme and as the preferred scheme of such scheme：The air-filtering membrane is located at receiving compartment
Interior, the air-filtering membrane is affixed with the inner surface of varying diameter portion.
On the basis of such scheme and as the preferred scheme of such scheme：The varying diameter portion is presented cyclic structure and ring
The week side of boss of medicine liquid channel axis is wound on, the air-filtering membrane is annular in shape, and hub assemblies pass through air-filtering membrane.
On the basis of such scheme and as the preferred scheme of such scheme：Gland is also inserted in the receiving compartment,
Gland is connected with upper set, and gland is provided with the second hole, and the first hole is connected by the second hole with air flue, and gland is by the air
Filter membrane is pressed on the inner surface of varying diameter portion.
On the basis of such scheme and as the preferred scheme of such scheme：Caveli is provided with the varying diameter portion,
Gland is provided with boss, boss insertion caveli, and boss forms interference fit with caveli.
On the basis of such scheme and as the preferred scheme of such scheme：It is convex in the periphery of gland along convex edge is provided with
Gap is formed along the inwall with receiving compartment to coordinate.
On the basis of such scheme and as the preferred scheme of such scheme：The hub assemblies include needle tubing, needle stand
And joint, needle tubing is fixedly connected with needle stand, and joint is connected with needle stand, and needle stand is molded with joint split.
On the basis of such scheme and as the preferred scheme of such scheme：Needle stand includes pedestal, and pedestal is used for and connects
Head is connected, and pedestal forms gap and coordinates with the inwall of receiving compartment, and one end of neighbouring needle tubing is provided with waist on pedestal, waist
Less than the external diameter of pedestal, waist inserts gland to external diameter, and the outer wall of waist forms interference fit with the inwall of convex edge.
On the basis of such scheme and as the preferred scheme of such scheme：：The hub assemblies also include intercepting
Liquid medicine filtering membrane in medicine liquid channel, is provided with the supporting part along the circumferentially continuous distribution of medicine liquid channel, on joint in needle stand
Protruding ring is provided with, in protruding ring insertion needle stand, be pressed on the supporting part of needle stand on the week edge of liquid medicine filtering membrane by protruding ring.
On the basis of such scheme and as the preferred scheme of such scheme：The air-filtering membrane is located at the upper set
Outside.
The present invention is prominent and beneficial compared to existing technology to be had the technical effect that：
Molten medicine pin of the invention, employs the structure of varying diameter portion, because varying diameter portion can form cyclic structure, whereby available face
Product is relatively large, and the design space that may act on installation air-filtering membrane is enriched, and then can be available for the air mistake of high surface area
Filter membrane is installed.It is understood that varying diameter portion is relatively large with air-filtering membrane, assembly manipulation is simpler.Furthermore, due to reducing
Portion is relatively large, then be available for air-filtering membrane to contact fixed surplus area and compare to many, so that air-filtering membrane can quilt
It is securely fixed in and puts.
Brief description of the drawings
Fig. 1 is overall structure diagram of the invention.
Fig. 2 is configuration schematic diagram of the invention.
Fig. 3 is cross section structure diagram of the invention.
Fig. 4 is the structural representation of gland of the invention.
Specific embodiment
To make the purpose, technical scheme and advantage of the application clearer, below in conjunction with the accompanying drawing in embodiment, to reality
The technical scheme applied in example is clearly and completely described, it is clear that described embodiment is only that the application part is implemented
Example, rather than whole embodiments.Based on the embodiment for being given, those of ordinary skill in the art are not before creative work is made
The every other embodiment for being obtained is put, the scope of the application protection is belonged to.
In the description of the present application, it is to be understood that term " on ", the orientation of the instruction such as D score or position relationship be base
In orientation shown in the drawings or position relationship, it is for only for ease of and describes the application and simplify to describe, rather than instruction or hint
Signified device or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to this
The limitation of application.
In the description of the present application, term " first ", " second " etc. be only used for describe purpose, and it is not intended that indicate or
Imply relative importance or the implicit quantity for indicating indicated technical characteristic.
In the description of the present application, predicate " fixation ", " being fixedly connected ", " connection " etc. should be interpreted broadly, and can be can
Dismounting connection, it is also possible to the integrative-structure of non-dismountable connection, can specifically refer to interference fit, clamping, mode connects for screw, welding, viscous
Connect with integrated formed structure etc..
In the description of the present application, fisrt feature forms the assembly relation being connected with second feature, should be interpreted broadly,
Can be fisrt feature and second feature directly contact, it is also possible to mediate contact is formed by third feature.
The disclosed molten medicine pin of the application, as a kind of with medicinal medicine equipment, in dispensing operation, with syringe
The syringe collocation of pin is used.During using the molten medicine pin of the application to make up a prescription, it may not be necessary in advance to infusion bag（Bottle）Hold Deng liquid
Injection air in device, liquid can be directly extracted when in molten medicine pin insertion medical liquid container.While liquid is extracted, air passes through
Molten medicine pin enters the molten device of liquid to balance the pressure in the molten device of liquid.
Generally, there is air-filtering membrane on molten medicine pin, to filter the particle matter in air, so as to obtain the sky of cleaning
Gas enters in medical liquid container to ensure administration safety.
This application discloses a kind of molten medicine pin, the mounting structure of its air-filtering membrane to existing molten medicine pin is improved,
So that air-filtering membrane by reliably safety in molten medicine pin, and assemble easily, qualification rate it is high.
The molten medicine pin of the application includes upper set 1, air-filtering membrane 2 and hub assemblies 3.Wherein, air-filtering membrane 2 and needle stand
Component 3 is installed in set 1.
In one embodiment, as shown in Fig. 2 hub assemblies 3 include needle tubing 31, needle stand 32 and joint 33.The one of needle tubing 31
End is fixedly connected with one end of needle stand 32, and the other end of needle stand 32 is fixed with joint 33.Joint 33 is molded with the split of needle stand 32.
Wherein, as shown in Figure 3, joint includes syringe connecting portion 311 and protruding ring 312.Syringe connecting portion 311 be used for and
Syringe is connected.Syringe connecting portion 311 is in the form of a column structure, and syringe connecting portion 311 offers the first medicine liquid channel 310 vertically,
It is available for the leading section of syringe to insert.Connect and ensure that connection is reliable for ease of both, the first medicine liquid channel 310 has certain
Taper, its internal diameter gradually increases from inside to outside.Be provided with thread 313 in the lateral surface of syringe connecting portion 311, its can with screw socket
Syringe be connected.Protruding ring 312 is in barrel-like structure, and one end of protruding ring 312 is used to be connected with syringe connecting portion 311, convex
Playing the other end of ring 312 is used to be connected with needle stand 32.
As shown in Figure 3, needle stand 32 includes pedestal 321, and pedestal 321 is used to be connected with joint 33, specifically, pedestal
321 are connected with the protruding ring 312 on joint 33, and pedestal 321 has the second medicine liquid channel 320, and protruding ring 312 inserts the second medicine
In liquid passage 320, the side wall 3201 of the medicine liquid channel 320 of protruding ring 312 and second forms interference fit so that joint 33 and pin
Seat 32 is mutually fixed.The front end of pedestal 321 is relatively thin, and it is used to be connected with one end of needle tubing 31.Joint 33, needle stand 32 and pin
After pipe 31 is assembled, the first medicine liquid channel 310, the second medicine liquid channel 320 are connected to be formed for conveying liquid with needle tubing 31
Medicine liquid channel 200.
In concrete application, because joint 33 is provided with thread 313, so that the molten medicine pin can be twisted by helicitic texture
Close on syringe so that molten medicine pin can be securely attached together with syringe.
Preferably, hub assemblies are also provided with liquid medicine filtering membrane 34, and liquid medicine filtering membrane 34 can filter in liquid
Insoluble particles more than particle diameter are determined, to avoid the insoluble particles from entering in the molten device of liquid, so as to ensure administration safety.It is real one
Apply in example, as shown in figure 4, liquid medicine filtering membrane 34 is intercepted in medicine liquid channel 200, whereby, liquid is filtered through liquid medicine filtering membrane 34
After transfer to medical liquid container.Specifically, it is affixed along the week edge for liquid medicine filtering membrane 34 within 322 weeks in the bottom of needle stand 32, on joint 33
The insertion needle stand 32 of protruding ring 312 in when, protruding ring 312 is by the week of liquid medicine filtering membrane 34 along being pressed on the bottom 322 of needle stand 32
On, so that liquid medicine filtering membrane 34 is fixed in medicine liquid channel.In the present embodiment, the bottom of needle stand 32 is used as liquid mistake
The supporting part of filter membrane 34, it is of course also possible to use other structures, such as position at middle part form flange collar and supply liquid medicine filtering membrane
34 install.
Using the hub assemblies of this structure, because liquid medicine filtering membrane 34 is by the protruding ring 312 and pin on joint 33
Seat 32 bottom 322 be engaged it is fixed to obtain, in fitting joint 33 can obtain liquid medicine filtering membrane 34 fixation, assembling
Process is simple.
Fin 323 is provided with the bottom of needle stand 32, fin 323 is radially extended along the bottom of needle stand 32, and from needle stand 32
The surface 32a of bottom is raised, and fin 323 offsets for liquid medicine filtering membrane 34.
During liquid transfers to medical liquid container, the effect of being stressed, liquid medicine filtering membrane 34 is sent out to the direction of bottom 322 of needle stand
Change shape, and liquid medicine filtering membrane 34 is supported by fin 323, to avoid the bottom of the globality of liquid medicine filtering membrane 34 and needle stand 32
Portion is in contact so that have a space all the time between the bottom of liquid medicine filtering membrane 34 and needle stand 32, so, in liquid medicine filtering membrane
The area for being available for liquid to pass through on 34 is not reduction, so as to ensure the rate of filtration.
Referring to Fig. 2, receiving compartment 10 is provided with set 1 on described, the insertion of hub assemblies 3 receiving compartment 10 is simultaneously formed with upper set 1
It is fixedly connected, the needle tubing 31 of hub assemblies exposes from upper set.
Referring to Fig. 3, there is gap between the inwall 101 of hub assemblies 3 and receiving compartment 10 and air flue 100 is formed, air flue
100 are connected with the venthole 11 being located on upper set 1.As shown in FIG., venthole 11 is opened in the front end 1a of set 1, outlet
Hole 11 is the wall 12 through upper set 1.Air flue is connected by the venthole with the external world.
In concrete application, the front end 1a insertion medical liquid containers of upper set, air flue 100 is connected through venthole 11 with medical liquid container
It is logical, whereby, air can be transferred in medical liquid container.
The upper set 1 has the varying diameter portion 13 perpendicular to medicine liquid channel axis, in one embodiment, in receiving compartment 10
Variable-diameter structure is formed on wall 101.As shown in Figure 4, upper set has adjacent two sections, and the wherein internal diameter of leading portion is interior less than back segment
The part that footpath, leading portion and back segment are mutually connected forms varying diameter portion 13.So, it is available for air-filtering membrane to be fixed in receiving compartment 10.
The first hole 5 is provided with varying diameter portion 13, air-filtering membrane 2, the air-filtering membrane 2 are fixed with varying diameter portion 13
Inner surface with varying diameter portion 13 is affixed, and air-filtering membrane 2 covers the first hole 5, and air can be through the first hole 5 and air-filtering membrane 2
Into air flue 100.In one embodiment, the first hole can set one, it is also possible to set multiple, as shown in figure 1, along receiving
Chamber circumferential array.
Because varying diameter portion 13 can form cyclic structure, whereby available area is relatively large, may act on installation air
The design space of filter membrane 2 is enriched, and then the air-filtering membrane of high surface area can be available for install.It is understood that reducing
Portion 13 is relatively large with air-filtering membrane 2, and assembly manipulation is simpler.Furthermore, because varying diameter portion 13 is relatively large, then it is available for air
The surplus area that filter membrane 2 contacts fixation is compared to many, so that air-filtering membrane can be fixed in putting.
In one embodiment, the varying diameter portion 13 is presented the week side of boss that cyclic structure is looped around medicine liquid channel axis, i.e. reducing
The axis in portion 13 is coaxial with the axis of receiving compartment 10, and the air-filtering membrane 2 is annular in shape, and hub assemblies 3 pass through air mistake
Filter membrane 2.It should be noted that cyclic structure, it is circular, or square frame like structure that it can be adopted, and can also be other
Shape.
In concrete application, due to varying diameter portion 13 and the overall circlewise structure of air-filtering membrane 2, its diameter degree of enclosing relative to
The diameter degree of enclosing of existing air-filtering membrane installation portion is big, greatly facilitates the assembling of air-filtering membrane, so as to improve processing close
Lattice rate.Explanation is needed, air-filtering membrane can not also use the cyclic structure of closing.
In one embodiment, as shown in FIG., gland 4 is also inserted in the receiving compartment 10, gland 4 is provided with the second hole
41, the first hole 5 is connected by the second hole 41 with air flue 100, and be attached to the air-filtering membrane 2 in varying diameter portion 13 by gland 4
On surface.
In the present embodiment, gland 4 is fixedly connected with upper set 1.As shown in FIG., it is provided with caveli in the varying diameter portion 13
14, boss 42, the insertion caveli 14 of boss 42 are provided with gland 4, and boss 42 forms interference fit with caveli 14.
So, boss is not in contact with upper set in gland loading procedure, is easy to for gland to be pushed to varying diameter portion.
In one embodiment, in the periphery of gland 4 along convex edge 43 is provided with, in one embodiment, convex edge is in circular ring,
Convex edge 43 forms gap and coordinates with the inwall 101 of receiving compartment 10.
By the structure of convex edge 43 so that play a part of to be oriented to during the push of gland 4, position.
For the ease of hub assemblies are assembled in upper set, in the present embodiment, the inwall of pedestal 321 and receiving compartment 10
101 form gap coordinates, and one end of neighbouring needle tubing 31 is provided with waist 324 on pedestal 321, and the external diameter of waist 324 is less than pedestal
321 external diameter, the insertion gland 4 of waist 324, and the outer wall of waist 324 forms interference fit with the inwall of convex edge 43.Thus,
Needle stand 32 is formed a fixed connection by gland, and gland is mutually fixed with upper set, and whereby, needle stand 32 is also formed with upper set and fixed
Connection.
Embodiment two
The molten medicine pin that the present embodiment is given is roughly the same with the structure of molten medicine pin disclosed in embodiment one, and the two difference is：It is real
The air-filtering membrane for applying example one is arranged in receiving compartment, and the air-filtering membrane of the molten medicine pin of the present embodiment is arranged on the outer of receiving compartment
Portion, specifically, variable-diameter structure is formed on the outer wall of upper set, likewise, upper set has adjacent two sections, wherein leading portion is outer
The part that internal diameter of the footpath less than outer section, leading portion and back segment are mutually connected forms varying diameter portion.Air filtration chamber can be compressed by outer press cover
In varying diameter portion.
Above-described embodiment is only presently preferred embodiments of the present invention, is not limited the scope of the invention according to this, therefore：It is all according to
The equivalence changes that structure of the invention, shape, principle are done, all should be covered by within protection scope of the present invention.
Claims (10)
1. a kind of molten medicine pin, including upper set, is provided with receiving compartment on described on set, hub assemblies insertion receiving compartment and with upper set shape
Into fixation, the needle tubing of hub assemblies exposes from upper set, has gap between hub assemblies and the inwall of receiving compartment and is formed
Air flue, air flue be located at the venthole that puts and be connected, the hub assemblies are formed with medicine liquid channel, it is characterised in that：Institute
Set is stated with the varying diameter portion perpendicular to medicine liquid channel axis, the first hole is provided with varying diameter portion, it is fixed free in varying diameter portion
Gas filter membrane, air-filtering membrane covers the first hole, and air can enter air flue through the first hole and air-filtering membrane.
2. molten medicine pin according to claim 1, it is characterised in that：The air-filtering membrane is located in receiving compartment, the sky
Gas filter membrane is affixed with the inner surface of varying diameter portion.
3. molten medicine pin according to claim 1 and 2, it is characterised in that：The varying diameter portion is presented cyclic structure and is looped around
The week side of boss of medicine liquid channel axis, the air-filtering membrane is annular in shape, and hub assemblies pass through air-filtering membrane.
4. molten medicine pin according to claim 3, it is characterised in that：Also be inserted in gland in the receiving compartment, gland with it is upper
Set is connected, and gland is provided with the second hole, and the first hole is connected by the second hole with air flue, and gland is by the air filtration mould
On the inner surface of varying diameter portion.
5. molten medicine pin according to claim 4, it is characterised in that：Caveli is provided with the varying diameter portion, is set on gland
There are boss, boss insertion caveli, and boss forms interference fit with caveli.
6. the molten medicine pin according to claim 4 or 5, it is characterised in that：In the periphery of gland along being provided with convex edge, convex edge with connect
Receive chamber inwall formed gap coordinate.
7. the molten medicine pin according to any one of claim 6, it is characterised in that：The hub assemblies include needle tubing, needle stand and
Joint, needle tubing is fixedly connected with needle stand, and joint is connected with needle stand, and needle stand is molded with joint split.
8. molten medicine pin according to claim 7, it is characterised in that：Needle stand includes pedestal, and pedestal is used to be connected with joint,
Pedestal forms gap and coordinates with the inwall of receiving compartment, and one end of neighbouring needle tubing is provided with waist on pedestal, and the external diameter of waist is less than
The external diameter of pedestal, waist insertion gland, and the outer wall of waist forms interference fit with the inwall of convex edge.
9. molten medicine pin according to claim 7, it is characterised in that：The hub assemblies also include intercepting in medicine liquid channel
Liquid medicine filtering membrane, the supporting part along the circumferentially continuous distribution of medicine liquid channel is provided with needle stand, protruding ring is provided with joint,
In protruding ring insertion needle stand, be pressed on the supporting part of needle stand on the week edge of liquid medicine filtering membrane by protruding ring.
10. molten medicine pin according to claim 1, it is characterised in that：The air-filtering membrane is located at the outside of the upper set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611256141.5A CN106726564B (en) | 2016-12-30 | 2016-12-30 | Medicine dissolving needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611256141.5A CN106726564B (en) | 2016-12-30 | 2016-12-30 | Medicine dissolving needle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106726564A true CN106726564A (en) | 2017-05-31 |
| CN106726564B CN106726564B (en) | 2023-09-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611256141.5A Active CN106726564B (en) | 2016-12-30 | 2016-12-30 | Medicine dissolving needle |
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