CN206777577U - Sterile doser - Google Patents
Sterile doser Download PDFInfo
- Publication number
- CN206777577U CN206777577U CN201621490094.6U CN201621490094U CN206777577U CN 206777577 U CN206777577 U CN 206777577U CN 201621490094 U CN201621490094 U CN 201621490094U CN 206777577 U CN206777577 U CN 206777577U
- Authority
- CN
- China
- Prior art keywords
- chamber
- draw point
- fan
- needle stand
- sleeve pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000012528 membrane Substances 0.000 claims abstract description 22
- 238000009827 uniform distribution Methods 0.000 claims abstract description 4
- 238000012856 packing Methods 0.000 claims description 16
- 238000004804 winding Methods 0.000 claims description 4
- 238000001914 filtration Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 239000003814 drug Substances 0.000 description 7
- 238000010276 construction Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 2
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model provides sterile doser, sterile doser, including draw point, sleeve pipe, needle stand and filter membrane, airspace is provided between sleeve pipe madial wall and draw point lateral wall, passage is provided with the side wall of sleeve upper end, the lower end of described sleeve pipe is provided with casing seat, casing seat includes upper casing seat and base of trapping, base of trapping includes needle stand chamber, the top internal diameter of needle stand chamber reduces the draw point chamber for being provided through draw point, the top side wall circumference uniform distribution of draw point chamber is provided with the fan-shaped cylinder that at least three radiuses are equal to draw point chamber external diameter, the upper end of fan-shaped cylinder is provided with fan-shaped connection boss, connect the filter membrane that annular is provided with above boss.The beneficial effects of the utility model are the gaps that outside air is entered between two adjacent ribs and casing seat lateral wall by the side wall of filter membrane, are discharged into airspace from passage, and good filtration effect is safe.
Description
Technical field
The utility model belongs to medical instruments field, and in particular to a kind of sterile doser.
Background technology
Transfusion is a kind of wide variety for the treatment of method, before being infused, it usually needs by pulvis or liquor medicine
Decoction first is configured to liquid preparation or solution to be infused, then liquid drug is filled into solution to be infused again.
Dosing, when taking out medicine, it is necessary to keep the air pressure balance inside and outside bottle, dosing can be made, to take out medicine operation free and relaxed.In matching somebody with somebody for decoction
Sterile doser is needed to use during putting, to keep a bottle inside and outside air pressure balance, and prevents the dust particle and disease in air
Substance is entered in solution to be injected.
Application number：201310612571.6 a kind of end face exhausting low resistance medicine feeding needle is disclosed, including hollow needle, needle guard
Pipe, pin fixed seat and air-filtering membrane, steam vent is provided with the side of the shield needle tubing of needle cannula；In the butt hole of pin fixed seat
Bottom is provided with the end face venthole to be interlinked with the external world, is provided with air-filtering membrane in the bottom of butt hole, needle cannula upper end is sleeved on
In the suit butt hole of hollow needle lower end, air-filtering membrane is pushed down in the lower surface for connecting seat pipe, and steam vent communicates with end face venthole
Even.For ease of the structure of axial core-pulling, compacting tool set is simple in construction for its needle cannula and pin fixed seat, shaping compacting efficiency high,
Gained high yield rate, the integrated cost of product reduce, more conducively industrialization.
Utility model content
The purpose of this utility model is to provide a kind of simple in construction, dosing, takes out that medicine resistance is small, using easy and convenient sterile
Doser.
The technical solution of the utility model is：
Sterile doser, including draw point, sleeve pipe, needle stand and filter membrane, are provided between sleeve pipe madial wall and draw point lateral wall
Airspace, passage is provided with the side wall of sleeve upper end, the lower end of described sleeve pipe is provided with casing seat, and casing seat includes upper set
Base and base of trapping, upper casing seat include winding the needle tube seat top surface and side wall, and sleeve pipe is vertically installed in casing seat top surface
Portion, upper casing seat interior are provided with first chamber, second chamber and the 3rd chamber that internal diameter gradually increases, sleeve pipe from the bottom to top
It is connected with first chamber, base of trapping includes needle stand chamber, and what needle stand was engaged with needle stand chamber is arranged at needle stand intracavitary portion, needle stand
The top internal diameter of chamber reduces the draw point chamber for being provided through draw point, and the external diameter of draw point chamber is equal to the external diameter of needle stand chamber, the side of draw point chamber
Wall top circumference is laid with the fan-shaped cylinder that at least three radiuses are equal to draw point chamber external diameter, drift angle and the draw point phase of fan-shaped cylinder
Contact, be arranged at intervals between fan-shaped cylinder and form groove, the upper end of fan-shaped cylinder is provided with fan-shaped connection boss, connects boss
Radius is less than the radius of fan-shaped cylinder, ultra-sonic welded between the drift angle of fan-shaped cylinder and the drift angle of the 3rd chamber, connects outside boss
Portion is arranged with columnar packing ring, is interference fitted between the lateral wall and second chamber madial wall of packing ring, is set above connection boss
There is the filter membrane of annular, the outside diameter of filter membrane is equal to the internal diameter of second chamber, and the interior circular diameter of filter membrane is equal to draw point
External diameter.
Outside air is entered in first chamber by the gap between fan-shaped cylinder and filter membrane, passes through sleeve pipe madial wall
Airspace between draw point lateral wall is discharged from the passage of sleeve upper end.
The height of packing ring is equal to the height of connection boss.
The internal diameter of packing ring is equal to the internal diameter of first chamber.
The top side wall circumference uniform distribution of draw point chamber is provided with the right angle fan cylinder that four radiuses are equal to draw point chamber external diameter.
The width of the groove is less than the diameter of draw point.
The madial wall of the needle stand chamber is provided with annular groove, and the needle stand lateral wall is provided with the ring with fit depressions
Shape is raised.
The utility model has the advantages and positive effects of：Sterile medicine feeding needle has simple in construction, easy to assembly, production
Required precision is low, and production cost is low, the advantages that being easy to large-scale industrialized production, and good permeability, dosing resistance are low.
Brief description of the drawings
Fig. 1 is the structural representation of the sterile doser of the utility model
Fig. 2 is the sectional view of the sterile doser of the utility model
Fig. 3 is the explosive view of the utility model casing seat
Fig. 4 is the sectional view of the utility model casing seat
In figure：
1st, draw point 2, upper casing seat 3, needle stand 4, sleeve pipe 5, base of trapping
6th, filter membrane 7, packing ring 21, first chamber 22, second chamber 23, the 3rd chamber
24th, winding the needle tube seat top surface 41, passage 51, connection boss 52, fan-shaped cylinder 53, draw point chamber
54th, needle stand chamber 55, groove
Embodiment
As shown in Figure 1 and Figure 2, sterile doser, including draw point 1, sleeve pipe 4, needle stand 3 and filter membrane 6, the madial wall of sleeve pipe 4 with
Airspace is provided between the lateral wall of draw point 1, passage 41 is provided with the side wall of the upper end of sleeve pipe 4, the lower end of sleeve pipe 4 is provided with set
Base, as shown in Figure 3, Figure 4, casing seat includes upper casing seat 2 and base 5 of trapping, upper casing seat 2 include winding the needle tube seat top surface 24
And side wall, sleeve pipe 4 are vertically installed in the middle part of casing seat top surface 24, the upper interior of casing seat 2 is provided with internal diameter from the bottom to top
The first chamber 21 that gradually increases, the chamber 23 of second chamber 22 and the 3rd, sleeve pipe 4 are connected with first chamber 21, base 5 of trapping
Including needle stand chamber 54, what needle stand 3 was engaged with needle stand chamber 54 is arranged inside needle stand chamber 54, and the top internal diameter of needle stand chamber 54 reduces
The draw point chamber 53 of draw point 1 is provided through, the external diameter of draw point chamber 53 is equal to the external diameter of needle stand chamber 54, the top side wall circle of draw point chamber 53
It is laid with the fan-shaped cylinder 52 that at least three radiuses are equal to the external diameter of draw point chamber 53, drift angle and the phase of draw point 1 of fan-shaped cylinder 52 week
Contact, be arranged at intervals between fan-shaped cylinder 52 and form groove 55, the upper end of fan-shaped cylinder 52 is provided with fan-shaped connection boss 51, even
The radius for connecing boss 51 is less than the radius of fan-shaped cylinder 52, ultrasonic between the drift angle of fan-shaped cylinder 52 and the drift angle of the 3rd chamber 23
Between welding, that is, the angle that is connected with lateral wall of the top surface of fan-shaped cylinder 52 and the top of the 3rd chamber 23 and madial wall
Angle ultra-sonic welded, the connection outer cover of boss 51 are provided with columnar packing ring 7, lateral wall and the inner side of second chamber 22 of packing ring 7
It is interference fitted between wall, the top of connection boss 51 is provided with the filter membrane 6 of annular, and the outside diameter of filter membrane 6 is equal to second chamber
22 internal diameter, the interior circular diameter of filter membrane 6 are equal to the external diameter of draw point 1.Connect boss 51 and the lateral wall of fan-shaped cylinder 52 respectively with
It is interference fitted between second chamber 22 and the madial wall of the 3rd chamber 23, connection boss 51 is deformed with fan-shaped cylinder 52, will
Draw point 1 is firmly fixed between the drift angle of fan-shaped cylinder 52.This snap fit is simple in construction, mould processing is simple,
Easy to assembly, production efficiency is high, and processing cost is low.
Preferably, the height of packing ring 7 is equal to the height of connection boss 51.Packing ring 7 fixes filter membrane 6 and the top of packing ring 7
In gap between the roof of second chamber 22, avoid packing ring 7 from deforming upon under the effect of the pressure, influence filter effect.
The internal diameter of packing ring 7 is equal to the internal diameter of first chamber 21.
As shown in figure 3, the top side wall circumference uniform distribution of draw point chamber 53, which is provided with four radiuses, is equal to the straight of the external diameter of draw point chamber 53
Angle fan-shaped cylinder 52.The width of groove 55 is less than the diameter of draw point 1.
Further, as shown in figure 4, being provided with annular groove on the madial wall of needle stand chamber 54, set on the lateral wall of needle stand 3
There is the annular protrusion with fit depressions.Further enhance the bonding strength and sealing effectiveness between needle stand 3 and needle stand chamber 54.
The course of work of this example：Outside air enters by the groove 55 between fan-shaped cylinder 52 and filter membrane 6
In one chamber 21, the row of passage 41 by the airspace between the madial wall of sleeve pipe 4 and the lateral wall of draw point 1 from the upper end of sleeve pipe 4
Go out.
One embodiment of the present utility model is described in detail above, but the content is only of the present utility model
Preferred embodiment, it is impossible to be considered as being used to limit practical range of the present utility model.It is all to be made according to present utility model application scope
Equivalent change with improve etc., all should still belong within patent covering scope of the present utility model.
Claims (6)
1. sterile doser, including draw point, sleeve pipe, needle stand and filter membrane, it is provided between sleeve pipe madial wall and draw point lateral wall logical
Gas gap, passage is provided with the side wall of sleeve upper end, it is characterised in that：The lower end of described sleeve pipe is provided with casing seat, sleeve pipe
Seat includes upper casing seat and base of trapping, upper casing seat include winding the needle tube seat top surface and side wall, and sleeve pipe is vertically installed in sleeve pipe
The middle part of seat top surface, upper casing seat interior are provided with first chamber, the second chamber and that internal diameter gradually increases from the bottom to top
Three chambers, sleeve pipe are connected with first chamber, and base of trapping includes needle stand chamber, and needle stand is arranged at needle stand with what needle stand chamber was engaged
Intracavitary portion, the top internal diameter of needle stand chamber reduce the draw point chamber for being provided through draw point, and the external diameter of draw point chamber is equal to the external diameter of needle stand chamber,
The top side wall circumference uniform distribution of draw point chamber is provided with the fan-shaped cylinder that at least three radiuses are equal to draw point chamber external diameter, the top of fan-shaped cylinder
Angle is in contact with draw point, is arranged at intervals between fan-shaped cylinder and forms groove, and the upper end of fan-shaped cylinder is provided with fan-shaped connection boss,
The radius of connection boss is less than the radius of fan-shaped cylinder, ultra-sonic welded between the drift angle of fan-shaped cylinder and the drift angle of the 3rd chamber,
Connection boss outer cover is provided with columnar packing ring, is interference fitted between the lateral wall and second chamber madial wall of packing ring, connects
The filter membrane of annular is provided with above boss, the outside diameter of filter membrane is equal to the internal diameter of second chamber, the interior circular diameter of filter membrane
Equal to the external diameter of draw point.
2. sterile doser according to claim 1, it is characterised in that：The height of packing ring is equal to the height of connection boss.
3. sterile doser according to claim 2, it is characterised in that：The internal diameter of packing ring is equal to the internal diameter of first chamber.
4. according to the sterile doser described in claim 1-3 any one, it is characterised in that：The top side wall circumference of draw point chamber
It is laid with the right angle fan cylinder that four radiuses are equal to draw point chamber external diameter.
5. sterile doser according to claim 4, it is characterised in that：The width of the groove is less than the diameter of draw point.
6. sterile doser according to claim 5, it is characterised in that：It is recessed that the madial wall of the needle stand chamber is provided with annular
Groove, the needle stand lateral wall are provided with the annular protrusion with fit depressions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621490094.6U CN206777577U (en) | 2016-12-30 | 2016-12-30 | Sterile doser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621490094.6U CN206777577U (en) | 2016-12-30 | 2016-12-30 | Sterile doser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206777577U true CN206777577U (en) | 2017-12-22 |
Family
ID=60704529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621490094.6U Expired - Fee Related CN206777577U (en) | 2016-12-30 | 2016-12-30 | Sterile doser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206777577U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116747141A (en) * | 2023-08-11 | 2023-09-15 | 四川大学华西医院 | A blunt needle with an adjustable degree of curvature of the blunt surface and a method of using the same |
-
2016
- 2016-12-30 CN CN201621490094.6U patent/CN206777577U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116747141A (en) * | 2023-08-11 | 2023-09-15 | 四川大学华西医院 | A blunt needle with an adjustable degree of curvature of the blunt surface and a method of using the same |
| CN116747141B (en) * | 2023-08-11 | 2024-01-16 | 四川大学华西医院 | Blunt needle capable of adjusting bending degree of blunt surface and application method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103071200B (en) | Positive-pressure needle-free connecting piece | |
| CN101648049B (en) | Medical forward flow connection device | |
| CN103721322A (en) | Filtering syringe | |
| CN109432549A (en) | Filtering exudate syringe | |
| CN206777577U (en) | Sterile doser | |
| CN109464727A (en) | Filtering exudate syringe | |
| CN206534958U (en) | Bi-directional filtered injection needle | |
| CN206777530U (en) | Sterile doser | |
| CN206777529U (en) | Sterile doser | |
| CN203169706U (en) | Positive pressure non-needle connecting piece | |
| CN203355049U (en) | Safety puncture outfit dripping unit | |
| CN103182111A (en) | Composite negative pressure conduction type self-cutoff device of disposable venous infusion apparatus | |
| CN206372356U (en) | Filter injection needle | |
| CN106668993A (en) | Filtering injection needle | |
| CN206391310U (en) | Filter injection needle | |
| CN208017874U (en) | Molten syringe | |
| CN212593061U (en) | One-way filtering injection needle | |
| CN203694267U (en) | Filtration injector | |
| CN206372357U (en) | Filter injection needle | |
| CN208243790U (en) | Doser | |
| CN106362254A (en) | Bidirectional filter syringe needle | |
| CN106580698B (en) | Air filtering needle | |
| CN203609699U (en) | Converter for blood dialyzer | |
| CN207520356U (en) | A kind of medicine feeding needle | |
| CN217745210U (en) | Dropping funnel for infusion apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171222 Termination date: 20181230 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |