CN208243790U - Doser - Google Patents
Doser Download PDFInfo
- Publication number
- CN208243790U CN208243790U CN201621373801.3U CN201621373801U CN208243790U CN 208243790 U CN208243790 U CN 208243790U CN 201621373801 U CN201621373801 U CN 201621373801U CN 208243790 U CN208243790 U CN 208243790U
- Authority
- CN
- China
- Prior art keywords
- casing seat
- casing
- needle stand
- cylinder
- needle
- 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.)
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Links
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 16
- 239000010959 steel Substances 0.000 claims abstract description 16
- 238000009827 uniform distribution Methods 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 2
- 239000003814 drug Substances 0.000 description 6
- 241001411320 Eriogonum inflatum Species 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The utility model provides a kind of doser, including steel needle, casing seat, air filter film and needle stand, casing seat includes casing, casing seat main body, casing seat bottom surface connects cylinder with casing seat, air inlet gap is equipped between steel needle lateral wall and casing inner sidewall, the side of casing front end is equipped with venthole, the rear end of casing is equipped with casing seat main body, casing seat body front end is connected with casing rear end, casing seat body rear is vertically equipped with the casing seat bottom surface of annular, the inner circle of casing seat bottom surface is connected with casing seat body rear lateral wall, the outer circle of casing seat bottom surface is vertically equipped with casing seat connection cylinder, casing seat base circumference is laid with multiple air inlets, the front end of the needle stand is equipped with the outer frustum of needle stand, the outer frustum of needle stand is taper type side wall, socket joint connects between the front end of needle stand connecting cylinder and casing seat connection cylinder, casing seat bottom surface back Casing seat connects the air filter film that cylinder interior is equipped with annular.The utility model doser structure is simple, required precision is high, processing cost is low.
Description
Technical field
The utility model belongs to medical instruments field, and in particular to a kind of doser.
Background technique
Infusion is a kind of widely applied treatment method, before being infused, it usually needs by pulvis or liquor drug
It first is configured to medical fluid with liquid preparation or solution to be infused, then liquid drug is filled into solution to be infused again.?
It when dosing, pumping medicine, needs to keep the air pressure balance inside and outside bottle, dosing, pumping medicine can be made to operate free and relaxed.In matching for medical fluid
It needs to keep pressure balance inside and outside the bottle, and to prevent the dust particle and disease in air using to sterile doser during setting
Substance enters in solution to be injected.
Application number: 201310612571.6 disclose a kind of end face exhausting low resistance medicine feeding needle, including middle empty needle, needle guard
Pipe, needle fixing seat and air filter film are equipped with gas vent in the side of the shield needle tubing of needle cannula；At the bottom of the butt hole of needle fixing seat
End face venthole equipped with the company of communicating with the outside world is equipped with air filter film in the bottom of butt hole, and needle cannula upper end is sleeved on hollow
Needle lower end is set in butt hole, and air filter film is pushed down in the lower end surface for connecting seat pipe, and gas vent interlinks with end face venthole.Its needle
Casing and needle fixing seat are the structure convenient for axial core-pulling, and structure is complicated for compacting tool set, molding compacting low efficiency, product it is comprehensive
It closes at high cost, is unfavorable for industrialization.
Utility model content
The purpose of the utility model is to provide a kind of structure is simple, dosing takes out that medicine resistance is small, using easy and convenient sterile
Doser.
The technical solution of the utility model is:
Doser, including steel needle, casing seat, air filter film and needle stand, casing seat include casing, casing seat main body, casing
Seat bottom surface connects cylinder with casing seat, and air inlet gap, the side of casing front end are equipped between steel needle lateral wall and casing inner sidewall
Equipped with venthole, the rear end of casing is equipped with casing seat main body, and casing seat body front end is connected with casing rear end, casing seat main body
Rear end is vertically equipped with the casing seat bottom surface of annular, and the inner circle of casing seat bottom surface is connected with casing seat body rear lateral wall, casing
The outer circle of seat bottom surface is vertically equipped with casing seat connection cylinder, and casing seat base circumference is laid with multiple air inlets, the needle stand
Front end be equipped with the outer frustum of needle stand, the outer frustum of needle stand is taper type side wall, and the small end of the outer frustum of needle stand is connected with needle stand front end,
The front end of the outer frustum of needle stand is equipped with columnar needle stand connecting cylinder, holds between the front end of needle stand connecting cylinder and casing seat connection cylinder
Connection is inserted, casing seat bottom surface back casing seat connects the air filter film that cylinder interior is equipped with annular.
The outer diameter of air filter film is greater than the circumscribed circle diameter of air inlet, and the internal diameter of air filter film is less than the inscribed circle of air inlet
Diameter.
The forward end of the needle stand connecting cylinder is equipped with the step of annular, and the lateral wall of the step connect circle with casing seat
Connection is interference fitted between medial wall of the tube.
The outside diameter of the air filter film is less than or equal to the outer diameter of step.
The front end of the needle stand is additionally provided with needle stand inner cylinder, and the needle stand inner cylinder inner sidewall is taper type side wall, needle stand
The end diameter of inner cylinder inner sidewall is equal to the outer diameter of steel needle, and the outside diameter of needle stand inner cylinder inner sidewall is less than needle stand inner cylinder
Outer diameter.
The air filter film is ultrasonically welded within casing seat bottom surface back.
The front side circumference uniform distribution of described sleeve pipe seat bottom surface is equipped with multiple gussets, one end and the casing seat main body phase of the gusset
Connection.
The length of the gusset is greater than or equal to the distance between air inlet circumscribed circle and casing seat main body.
The gusset is arranged between two adjacent air inlets.
The utility model has the advantages and positive effects of: structure is simple, and requirement on machining accuracy is low, easy for installation, adds
Work is at low cost.
Detailed description of the invention
Fig. 1 is the utility model doser structural schematic diagram
Fig. 2 is the utility model casing seat bottom surface structure schematic diagram
In figure:
1, steel needle 2, casing 3, casing seat main body 4, casing seat bottom surface
5, casing seat connection cylinder 6, needle stand 7, needle stand outer frustum 8, needle stand inner cylinder
9, needle stand inner cylinder inner sidewall 10, venthole 11, air inlet 12, air filter film
13, gusset 14, needle stand connecting cylinder
Specific embodiment
As shown in Figure 1, the utility model doser, including steel needle 1, casing seat, air filter film 12 and needle stand 6, casing seat
Connect cylinder 5 with casing seat including casing 2, casing seat main body 3, casing seat bottom surface 4,1 lateral wall of steel needle and 2 inner sidewall of casing it
Between be equipped with air inlet gap, the side of 2 front end of casing is equipped with venthole 10, and the rear end of casing 2 is equipped with casing seat main body 3, casing seat
3 front end of main body is connected with 2 rear end of casing, and 3 rear end of casing seat main body is vertically equipped with the casing seat bottom surface 4 of annular, casing seat bottom
The inner circle in face 4 is connected with 3 rear end lateral wall of casing seat main body, and the outer circle of casing seat bottom surface 4 is vertically equipped with casing seat connection cylinder
5, as shown in Fig. 2, 4 circumference uniform distribution of casing seat bottom surface is equipped with multiple air inlets 11, the front end of needle stand 6 is equipped with the outer frustum 7 of needle stand, needle
The outer frustum 7 of seat is taper type side wall, and the small end of the outer frustum 7 of needle stand is connected with 6 front end of needle stand, and the big end of the outer frustum 7 of needle stand is set
There is columnar needle stand connecting cylinder 14, socket joint connects between the front end of needle stand connecting cylinder 14 and casing seat connection cylinder 8, casing seat
Connect the air filter film 12 that annular is equipped with inside cylinder 8.
The outer diameter of air filter film 12 is greater than the circumscribed circle diameter of air inlet 11, and the internal diameter of air filter film 12 is less than air inlet 11
Inscribed circle diameter.
The forward end of needle stand connecting cylinder 14 is equipped with the step of annular, and the lateral wall of step is connect on the inside of cylinder with casing seat
It is interference fitted connection between wall, prevents air from leaking.
The outside diameter of air filter film 12 can be less than or equal to the outer diameter of step.It can be avoided 12 side of air filter film in this way
Edge curling is easy to assembly quick.
The front end of needle stand 6 is additionally provided with needle stand inner cylinder 8, and needle stand inner cylinder inner sidewall 9 is taper type side wall, needle stand inner cylinder
The end diameter of inner sidewall 9 is equal to the outer diameter of steel needle 1, and the outside diameter of needle stand inner cylinder inner sidewall 9 is less than needle stand inner cylinder 8
Outer diameter.Chamfering between needle stand inner cylinder inner sidewall 9 and steel needle 1 can be used for being added fixed glue, and steel needle 1 and needle stand 6 is secured
Be fixed together.
Further, the air filter film 12 can by ultrasonic welding, paste or be extruded in the rear side of casing seat bottom surface 4.
Further, air filter film 12 can be ultrasonically welded within the rear side of casing seat bottom surface 4 by the way of two annular solders.
As shown in Fig. 2, the front side circumference uniform distribution of casing seat bottom surface 4 is equipped with multiple gussets 13, one end of gusset 13 and casing
Seat main body 3 is connected.The length of gusset 13 is greater than or equal to the distance between 11 circumscribed circle of air inlet and casing seat main body 3.Into
One step, gusset 13 is arranged between two adjacent air inlets 11.There is gusset 13 certain height can prevent 1 He of steel needle
After casing 2 is inserted into bottle stopper, 4 front side of casing seat bottom surface is in contact with bottle stopper, and the air inlet 11 on casing seat bottom surface 4 is blocked.
The course of work of this example: extraneous gas enters the outer frustum 7 of needle stand by air filter film 12 by air inlet 11
In internal space, then it is discharged by the gap between casing 3 and steel needle 1 from venthole 10 by air filter film 12.
One embodiment of the utility model is described in detail above, but the content is only the utility model
Preferred embodiment should not be considered as limiting the scope of the present invention.It is all to be made according to application scope of the utility model
All the changes and improvements etc., should still belong within the patent covering scope of the utility model.
Claims (8)
1. doser, including steel needle, casing seat, air filter film and needle stand, it is characterised in that: casing seat includes casing, casing seat
Main body, casing seat bottom surface connect cylinder with casing seat, air inlet gap are equipped between steel needle lateral wall and casing inner sidewall, before casing
The side at end is equipped with venthole, and the rear end of casing is equipped with casing seat main body, and casing seat body front end is connected with casing rear end, covers
Tube socket body rear is vertically equipped with the casing seat bottom surface of annular, inner circle and the casing seat body rear lateral wall phase of casing seat bottom surface
Even, the outer circle of casing seat bottom surface is vertically equipped with casing seat connection cylinder, and casing seat base circumference is laid with multiple air inlets, institute
The front end for stating needle stand is equipped with the outer frustum of needle stand, and the outer frustum of needle stand is taper type side wall, the small end of the outer frustum of needle stand and needle stand front end
It is connected, the front end of the outer frustum of needle stand is equipped with columnar needle stand connecting cylinder, and the front end of needle stand connecting cylinder connect circle with casing seat
Socket joint connection between cylinder, casing seat bottom surface back casing seat connect the air filter film that cylinder interior is equipped with annular.
2. doser according to claim 1, it is characterised in that: the circumscribed circle that the outer diameter of air filter film is greater than air inlet is straight
Diameter, the internal diameter of air filter film are less than the inscribed circle diameter of air inlet.
3. doser according to claim 2, it is characterised in that: the forward end of the needle stand connecting cylinder is equipped with annular
Step, the lateral wall and casing seat of the step, which connect, is interference fitted connection between cylinder inner sidewall.
4. doser according to claim 3, it is characterised in that: the outside diameter of the air filter film is less than or equal to platform
The outer diameter of rank.
5. doser according to any one of claims 1-4, it is characterised in that: the front end of the needle stand is additionally provided with needle stand
Inner cylinder, the needle stand inner cylinder inner sidewall are taper type side wall, and the end diameter of needle stand inner cylinder inner sidewall is equal to steel needle
Outer diameter, the outside diameter of needle stand inner cylinder inner sidewall are less than the outer diameter of needle stand inner cylinder.
6. doser according to claim 5, it is characterised in that: the air filter film ultrasonic welding is bonded or is extruded in
Casing seat bottom surface back.
7. doser according to claim 6, it is characterised in that: the front side circumference uniform distribution of described sleeve pipe seat bottom surface is equipped with more
One end of a gusset, the gusset is connected with casing seat main body.
8. doser according to claim 7, it is characterised in that: it is external that the length of the gusset is greater than or equal to air inlet
The distance between round and casing seat main body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621373801.3U CN208243790U (en) | 2016-12-14 | 2016-12-14 | Doser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621373801.3U CN208243790U (en) | 2016-12-14 | 2016-12-14 | Doser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208243790U true CN208243790U (en) | 2018-12-18 |
Family
ID=64618478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621373801.3U Active CN208243790U (en) | 2016-12-14 | 2016-12-14 | Doser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208243790U (en) |
-
2016
- 2016-12-14 CN CN201621373801.3U patent/CN208243790U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |