CN208017870U - Infusion pump dosing valve for preventing reverse-flow - Google Patents
Infusion pump dosing valve for preventing reverse-flow Download PDFInfo
- Publication number
- CN208017870U CN208017870U CN201720699885.8U CN201720699885U CN208017870U CN 208017870 U CN208017870 U CN 208017870U CN 201720699885 U CN201720699885 U CN 201720699885U CN 208017870 U CN208017870 U CN 208017870U
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- CN
- China
- Prior art keywords
- vertical tube
- interconnecting piece
- annular
- seal face
- infusion pump
- Prior art date
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- 238000001802 infusion Methods 0.000 title claims abstract description 31
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 34
- 229910002027 silica gel Inorganic materials 0.000 claims abstract description 34
- 239000000741 silica gel Substances 0.000 claims abstract description 34
- 229960001866 silicon dioxide Drugs 0.000 claims abstract description 34
- 241001149930 Protura <class> Species 0.000 claims abstract description 31
- 238000002347 injection Methods 0.000 abstract description 13
- 239000007924 injection Substances 0.000 abstract description 13
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 17
- 230000000694 effects Effects 0.000 description 6
- 238000010992 reflux Methods 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- 239000003814 drug Substances 0.000 description 4
- 230000002411 adverse Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229940079593 drug Drugs 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 241000251133 Sphyrna tiburo Species 0.000 description 1
- 230000036592 analgesia Effects 0.000 description 1
- 230000000202 analgesic effect Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000011796 hollow space material Substances 0.000 description 1
- 210000002381 plasma Anatomy 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model provides infusion pump dosing valve for preventing reverse-flow, including female Luer of pressurizeing, silicagel pad and dosing threeway, the upper end for female Luer of pressurizeing is equipped with conehead chamber, conehead chamber lateral wall is vertically equipped with annular surface, the outer circle of annular surface is vertically equipped with circular cylinder body, the lower end of conehead chamber is equipped with annular bonnet, the outer circle of annular bonnet is connected with conehead chamber inner sidewall, silicagel pad is spherical, the center of spherical crown is circular seal face, the edge in circular seal face is equipped with multiple fixed jaws uniformly at intervals, the inner circle of annular bonnet and circular seal face Interference contact, the riser upper end of dosing threeway is equipped with vertical tube interconnecting piece, the middle inside of vertical tube interconnecting piece forms a ring-shaped platform perpendicular with vertical tube interconnecting piece lateral wall, fixed jaw lower end and ring-shaped platform Interference contact, the lateral wall of vertical tube interconnecting piece and the madial wall of circular cylinder body are interference fitted.The utility model has the beneficial effects that it is simple in structure it is at low cost, injection pressure is small, no leakage, does not flow back, easy to operate.
Description
Technical field
The utility model belongs to medical instruments field, more particularly, to a kind of infusion pump dosing valve for preventing reverse-flow.
Background technology
Infusion pump also known as analgesia pump, it makes analgesic that can keep the concentration timely stablized in blood plasma, and
Patient can be allowed voluntarily to press administration with rapid stiffening effect, treatment more individuation.
In use, required drug is added to by doser for infusion pump in the reservoir of infusion pump, pass through reservoir
Self-constriction by medical liquid squeezing, to which liquid enters extension tube attached, into patient's body.
Application number：201020243518.5 disclosing a kind of doser for infusion pump, including one is equipped at least triple channel intercommunication
Dosing seat, wherein being equipped with dosing body in a channel, the dosing body is equipped with a hollow cavity, and a valve body is equipped in the hollow cavity,
There is an annular slope on wall in the dosing body, one is correspondingly provided on the valve outer wall to be pasted with wall circular inclined-plane in dosing body
The tapered shoulder of conjunction, the dosing mouth by external device in dosing body one end apply thrust, then valve body is deformed downwards by thrust, energy
Enough so that the tapered shoulder of valve outer wall is detached with the annular slope of wall in dosing body, to which dosing body inner hollow space is connected to
Integrally, and by extension tube attached, so as to draw the drug of infusion pump, in addition, dosing seat channel uses interpolation with extension tube attached
Mode connects, and connection is more reliable, avoids the occurrence of drug leakage phenomenon.
In the easily anti-liquid of infusion pump dosing valve for preventing reverse-flow of existing technology, the easy reflux out of three-way pipeline of liquid returns to anti-
In reflux valve, if when the secondary dosing of syringe, injection pressure apply not in time or apply injection pressure it is too small when, in the pump housing
Liquid can reflux into the not enough leakage of instrument used for injection volume in instrument used for injection, is caused, when dosing is completed, syringe pumpback is not
It is not in place that it is easy to cause spool rebound in time, causes valve body leakage.
Invention content
The purpose of this utility model be to provide it is a kind of it is simple in structure, at low cost, injection pressure is small, automatic plugging is timely, no
Leakage does not flow back, easy to operate, is especially suitable for infusion pump dosing valve for preventing reverse-flow.
The technical solution of the utility model is：
Infusion pump dosing valve for preventing reverse-flow, including pressurization female Luer, silicagel pad and dosing threeway, female Luer of pressurizeing it is upper
End is equipped with the conehead chamber that is connected with syringe conehead, and the lower end outside wall of conehead chamber is vertically equipped with annular surface, annular surface it is interior
Circle is vertically connected with conehead chamber lateral wall, and the outer circle of annular surface is vertically equipped with circular cylinder body, and the lower end of conehead chamber is equipped with ring
The outer circle of shape bonnet, annular bonnet is connected with conehead chamber inner sidewall, and silicagel pad is spherical, and the center of spherical crown is circular seal
The center in face, spherical crown is circular seal face, and the edge in circular seal face is equipped with multiple fixed jaws uniformly at intervals, circular seal face
Diameter is more than the inner circle of annular bonnet, inner circle and the circular seal face Interference contact of annular bonnet, dosing threeway include transverse tube and
Vertical tube, riser upper end are equipped with vertical tube interconnecting piece, and vertical tube interconnecting piece upper-end inner diameter is less than vertical tube interconnecting piece bottom diameter, vertical tube connection
The middle inside in portion forms a ring-shaped platform perpendicular with vertical tube interconnecting piece lateral wall, fixed jaw lower end and ring-shaped platform mistake
It is full of contact, the lateral wall of vertical tube interconnecting piece and the madial wall of circular cylinder body are interference fitted.
The silicagel pad is flexible silicon rubber cushion.
The utility model infusion pump dosing valve for preventing reverse-flow is in use, conehead chamber is mounted on syringe conehead, push rod pushes away
Dynamic rubber plug travels forward, and liquid is flowed into silicagel pad upper end by syringe conehead, and under the effect of the pressure, shape occurs for silicagel pad
Become, the gap between silicagel pad and annular bonnet is opened, and liquid is entered perpendicular by the gap between silicagel pad and annular bonnet
The inside of pipe jointing part is entered by vertical tube interconnecting piece in vertical tube.After injection, liquid reflux, in the work of return pressure
Under, silicagel pad is rebounded original shape, and the space closure between silicagel pad and annular bonnet avoids liquid and adds from infusion pump
It is flowed back into syringe in medicine valve for preventing reverse-flow.No leakage and counterflow-preventing is timely, sealing effect is good.
The fixed jaw is sector, and fan-shaped inner circle is connected with the edge in circular seal face, fan-shaped outside diameter etc.
In vertical tube interconnecting piece upper-end inner diameter.
Fan-shaped fixed jaw can either ensure the support between fixed jaw and ring-shaped platform, and can ensure to adopt in dosing
It can be deformed upon with smaller pressure silicagel pad, the gap between silicagel pad circular seal face and annular bonnet is opened.
The edge in the circular seal face is set uniformly at intervals there are three fixed jaw.
The vertical tube interconnecting piece bottom diameter is less than the diameter in circular seal face.
Liquid can only be flowed into the vertical tube of circular seal face lower end by the gap between fixed jaw in this way.
The vertical tube interconnecting piece bottom diameter is less than vertical tube internal diameter.
In this way under the action of return pressure, the liquid flowed out from vertical tube interconnecting piece lower end can be rapidly by circular seal
Pad ejection avoids adverse current leakage to the downside of annular bonnet.
Multiple grooves parallel with vertical tube axle center, groove are equipped on the vertical tube interconnecting piece lower inner side wall uniformly at intervals
The sum of depth and vertical tube interconnecting piece bottom diameter are less than the diameter in circular seal face.
The setting of groove reduces injection pressure on the basis of shortening silicagel pad rebound time is short.
The vertical tube interconnecting piece lateral wall lower end is equipped with the projected side wall of annular, under the upper end and circular cylinder body of projected side wall
End end is in contact.
Projected side wall further improves sealing intensity, avoids leakage.
The top surface of the annular bonnet and conehead chamber inner sidewall are perpendicular, and the bottom surface of the annular bonnet is by edge to center
It is bent upwards after being bent downwardly, is connected smoothly between the bottom surface of annular bonnet and the inner circle side wall of annular bonnet.
The setting of annular bonnet bottom surface reduces the contact area between silicagel pad and annular bonnet, makes silicagel pad and annular
Gap between bonnet is easily upon opening, and injection pressure is small.Also, silicagel pad is rebounded, and required countercurrent pressure is also small, and sealing is imitated
Fruit is good.
The utility model has the advantages and positive effects of：Due to the adoption of the above technical scheme, infusion pump dosing is anti-reverse
Flow valve it is more convenient, injection pressure is small, and automatic plugging is timely, and no leakage does not flow back, and counterflow-preventing effect is good, have it is simple in structure,
The advantages such as processing cost is low.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model infusion pump dosing valve for preventing reverse-flow
Fig. 2 is the explosive view of the utility model infusion pump dosing valve for preventing reverse-flow
Fig. 3 is the sectional view of the utility model infusion pump dosing valve for preventing reverse-flow
Fig. 4 is the utility model infusion pump dosing valve for preventing reverse-flow pressurization female Luer structural schematic diagram
Fig. 5 is the utility model infusion pump dosing valve for preventing reverse-flow dosing three-port structure schematic diagram
In figure：
1, pressurize female Luer 2, silicagel pad 3, dosing threeway 11, conehead chamber
12, annular surface 13, circular cylinder body 14, annular bonnet 21, circular seal face
22, fixed jaw 31, transverse tube 32, vertical tube 33, vertical tube interconnecting piece
34, projected side wall 35, groove 331, vertical tube interconnecting piece upper end 332, vertical tube interconnecting piece lower end
333, ring-shaped platform
Specific implementation mode
As shown in Figs. 1-3, the utility model infusion pump dosing valve for preventing reverse-flow, including pressurization female Luer 1,2 and of silicagel pad
Dosing threeway 3, as shown in figure 4, the upper end of pressurization female Luer 1 is equipped with the conehead chamber 11 being connected with syringe conehead, conehead
The lower end outside wall of chamber 11 is vertically equipped with annular surface 12, and inner circle and 11 lateral wall of conehead chamber of annular surface 12 are vertically connected, annular
The outer circle in face 12 is vertically equipped with circular cylinder body 13, and the lower end of conehead chamber 11 is equipped with annular bonnet 14, annular bonnet 14 it is outer
Circle is connected with 11 madial wall of conehead chamber, and silicagel pad 2 is spherical, and the center of spherical crown is circular seal face 21, circular seal face
21 edge is equipped with multiple fixed jaws 22 uniformly at intervals, and the diameter in circular seal face 21 is more than the inner circle of annular bonnet 14, annular
The inner circle of bonnet 14 is in contact with circular seal face 21, as shown in figure 5, dosing threeway 3 includes transverse tube 31 and vertical tube 32, vertical tube 32
Upper end is equipped with vertical tube interconnecting piece 33, and 331 internal diameter of vertical tube interconnecting piece upper end is less than 332 internal diameter of vertical tube interconnecting piece lower end, vertical tube connection
The middle inside in portion 33 forms a ring-shaped platform 333 perpendicular with 33 lateral wall of vertical tube interconnecting piece, that is, ring-shaped platform
333 inner circle is the internal diameter of vertical tube interconnecting piece lower end 332, and the outer circle of ring-shaped platform 333 is the interior of vertical tube interconnecting piece upper end 331
Diameter, 22 lower end of fixed jaw are in contact with ring-shaped platform 333, the lateral wall of vertical tube interconnecting piece 33 and the madial wall mistake of circular cylinder body 12
It is full of cooperation.
Further, fixed jaw 22 is sector, and fan-shaped inner circle is connected with the edge in circular seal face 21, and fan-shaped is outer
Circular diameter is equal to 331 internal diameter of vertical tube interconnecting piece upper end.Fan-shaped fixed jaw 22 can either ensure fixed jaw 22 and ring-shaped platform 333
Between support, and can ensure deform upon using the silicagel pad 2 of smaller pressure in dosing, by silicagel pad 2
It opens in gap between circular seal face 21 and annular bonnet 14.Further, equal at the edge interval in circular seal face 21
Fixed jaw 22 there are three laying.
332 internal diameter of vertical tube interconnecting piece lower end is less than the diameter in circular seal face 21.Liquid can only pass through fixed jaw 22 in this way
Between gap be flowed into the vertical tube 32 of 21 lower end of circular seal face.332 internal diameter of vertical tube interconnecting piece lower end is smaller than vertical tube 32
Internal diameter.In this way under the action of return pressure, the liquid flowed out from vertical tube interconnecting piece lower end 332 can be rapidly by circular seal
Pad 21 is pushed to return to initial position, is in contact with the downside of annular bonnet 14, avoids adverse current leakage.
It is equipped with multiple grooves parallel with 32 axle center of vertical tube uniformly at intervals on 332 madial wall of vertical tube interconnecting piece lower end
35, the sum of 35 depth of groove and 32 interconnecting piece bottom diameter of vertical tube are less than the diameter in circular seal face 21.The setting of groove 35 exists
On the basis of shortening 2 rebound time of silicagel pad is short, injection pressure is reduced.33 lateral wall lower end of vertical tube interconnecting piece is equipped with annular
The upper end of projected side wall 34, projected side wall 34 is in contact with 13 lower end of circular cylinder body.Projected side wall 34 further improves
Sealing intensity avoids leakage.
Further, the top surface of annular bonnet 14 and 11 madial wall of conehead chamber are perpendicular, the bottom surface of annular bonnet 14 by
It is bent upwards behind edge to center bent downwards, it is smoothed between the bottom surface of annular bonnet 14 and the inner circle side wall of annular bonnet 14
Cross connection.The setting of 14 bottom surface of annular bonnet reduces the contact area between silicagel pad 2 and annular bonnet 14, makes silicagel pad 2
Gap between annular bonnet 14 is easily upon opening, and injection pressure is small.Also, silicagel pad 2 is rebounded required countercurrent pressure
Small, sealing effect is good.
The course of work of this example：The utility model infusion pump dosing valve for preventing reverse-flow is in use, conehead chamber 11 is mounted on
On syringe conehead, push rod pushes rubber plug to travel forward, and liquid is flowed into 2 upper end of silicagel pad by syringe conehead, in pressure
Under the action of, silicagel pad 2 deforms upon, and the gap between silicagel pad 2 and annular bonnet 14 is opened, liquid by silicagel pad 2 with
Gap between annular bonnet 14 enters the inside of vertical tube interconnecting piece 33, is entered in vertical tube 32 by vertical tube interconnecting piece 33.
After injection, liquid reflux, under the action of return pressure, silicagel pad 2 is rebounded original shape, silicagel pad 2 and annular plate valve
Space closure between cap 14 avoids liquid and is flowed back into syringe from infusion pump dosing valve for preventing reverse-flow.No leakage and anti-
Adverse current effect is good.
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 all still belong within the patent covering scope of the utility model.
Claims (8)
1. infusion pump dosing valve for preventing reverse-flow, it is characterised in that：Including pressurization female Luer, silicagel pad and dosing threeway, Shandong of pressurizeing
The upper end of your connector is equipped with the conehead chamber being connected with syringe conehead, and the lower end outside wall of conehead chamber is vertically equipped with annular surface,
The inner circle of annular surface is vertically connected with conehead chamber lateral wall, and the outer circle of annular surface is vertically equipped with circular cylinder body, the lower end of conehead chamber
End is equipped with annular bonnet, and the outer circle of annular bonnet is connected with conehead chamber inner sidewall, and silicagel pad is spherical, the center of spherical crown
Edge for circular seal face, circular seal face is equipped with multiple fixed jaws uniformly at intervals, and the diameter in circular seal face is more than annular
The inner circle of bonnet, inner circle and the circular seal face Interference contact of annular bonnet, dosing threeway includes transverse tube and vertical tube, riser upper end
Equipped with vertical tube interconnecting piece, vertical tube interconnecting piece upper-end inner diameter is less than vertical tube interconnecting piece bottom diameter, the middle inside of vertical tube interconnecting piece
Form a ring-shaped platform perpendicular with vertical tube interconnecting piece lateral wall, fixed jaw lower end and ring-shaped platform Interference contact, vertical tube
The lateral wall of interconnecting piece and the madial wall of circular cylinder body are interference fitted.
2. infusion pump dosing valve for preventing reverse-flow according to claim 1, it is characterised in that：The fixed jaw is sector, fan-shaped
Inner circle be connected with the edge in circular seal face, fan-shaped outside diameter be equal to vertical tube interconnecting piece upper-end inner diameter.
3. infusion pump dosing valve for preventing reverse-flow according to claim 2, it is characterised in that：Between the edge in the circular seal face
Every being laid with three fixed jaws.
4. the infusion pump dosing valve for preventing reverse-flow according to claim 1-3 any one, it is characterised in that：The vertical tube connection
Portion's bottom diameter is less than the diameter in circular seal face.
5. infusion pump dosing valve for preventing reverse-flow according to claim 4, it is characterised in that：The vertical tube interconnecting piece bottom diameter
Less than vertical tube internal diameter.
6. infusion pump dosing valve for preventing reverse-flow according to claim 5, it is characterised in that：The vertical tube interconnecting piece lower end inside
Multiple grooves parallel with vertical tube axle center are equipped on wall uniformly at intervals, the sum of depth of groove and vertical tube interconnecting piece bottom diameter are small
Diameter in circular seal face.
7. infusion pump dosing valve for preventing reverse-flow according to claim 4, it is characterised in that：Under the vertical tube interconnecting piece lateral wall
Projected side wall of the end equipped with annular, the upper end of projected side wall is in contact with circular cylinder body lower end.
8. infusion pump dosing valve for preventing reverse-flow according to claim 4, it is characterised in that：The top surface of the annular bonnet and cone
Head cavity madial wall is perpendicular, it is described annular bonnet bottom surface by being bent upwards behind edge to center bent downwards, annular bonnet
It is connected smoothly between bottom surface and the inner circle side wall of annular bonnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720699885.8U CN208017870U (en) | 2017-06-15 | 2017-06-15 | Infusion pump dosing valve for preventing reverse-flow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720699885.8U CN208017870U (en) | 2017-06-15 | 2017-06-15 | Infusion pump dosing valve for preventing reverse-flow |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208017870U true CN208017870U (en) | 2018-10-30 |
Family
ID=63897656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720699885.8U Active CN208017870U (en) | 2017-06-15 | 2017-06-15 | Infusion pump dosing valve for preventing reverse-flow |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208017870U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109464720A (en) * | 2018-12-13 | 2019-03-15 | 徐书涛 | A kind of anti-extravasation chemotherapy delivery device of Internal Medicine-Oncology |
| CN109574147A (en) * | 2018-12-21 | 2019-04-05 | 文林涛 | A kind of RO reverse osmosis water purification machine of washing lotion class cosmetics |
-
2017
- 2017-06-15 CN CN201720699885.8U patent/CN208017870U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109464720A (en) * | 2018-12-13 | 2019-03-15 | 徐书涛 | A kind of anti-extravasation chemotherapy delivery device of Internal Medicine-Oncology |
| CN109464720B (en) * | 2018-12-13 | 2021-04-30 | 杨光明 | Anti-extravasation chemotherapy drug delivery device for medical oncology |
| CN109574147A (en) * | 2018-12-21 | 2019-04-05 | 文林涛 | A kind of RO reverse osmosis water purification machine of washing lotion class cosmetics |
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