CN104056320A - Medical injection dosing device - Google Patents
Medical injection dosing device Download PDFInfo
- Publication number
- CN104056320A CN104056320A CN201410280011.XA CN201410280011A CN104056320A CN 104056320 A CN104056320 A CN 104056320A CN 201410280011 A CN201410280011 A CN 201410280011A CN 104056320 A CN104056320 A CN 104056320A
- Authority
- CN
- China
- Prior art keywords
- syringe
- piston
- piston cylinder
- push
- 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.)
- Granted
Links
- 238000010999 medical injection Methods 0.000 title claims abstract description 9
- 239000012528 membrane Substances 0.000 claims abstract description 4
- 238000009423 ventilation Methods 0.000 claims abstract 13
- 239000000463 material Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 239000003814 drug Substances 0.000 abstract description 25
- 239000007788 liquid Substances 0.000 abstract description 16
- 238000000034 method Methods 0.000 abstract description 9
- 206010011409 Cross infection Diseases 0.000 abstract description 3
- 206010029803 Nosocomial infection Diseases 0.000 abstract description 3
- 238000005086 pumping Methods 0.000 abstract 1
- 241000196324 Embryophyta Species 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 229940079593 drug Drugs 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 241001411320 Eriogonum inflatum Species 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000008155 medical solution Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012840 feeding operation Methods 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
本发明涉及一种医用注射加药装置，针筒的尾部为封闭端，侧壁上开设有条形通孔，推拉装置包括活塞缸、活塞、U形连杆和推拉柄，活塞缸贴设在针筒外壁上，活塞缸的侧壁上对应条形通孔设置有通气孔，活塞缸内设置有活塞，活塞通过U形连杆与推拉柄连接。针头的侧壁上设置有通气管，通气管的开口端朝向针头座设置，且通气管靠近封闭端的侧壁上开设有进气孔，该进气孔和通气管的开口端处均设置有空气过滤膜。本发明的加药装置结构简单，使用方便，能有效地防止操作注射器时对药液的交叉感染，并且本加药装置的针头具有通气管，在抽药过程中能够维持药瓶内外的气压平衡，使加药操作更加省力，能提高加药的工作效率。
The invention relates to a medical injection dosing device. The tail of the syringe is a closed end, and a strip-shaped through hole is opened on the side wall. The push-pull device includes a piston cylinder, a piston, a U-shaped connecting rod and a push-pull handle. The piston cylinder is attached to the On the outer wall of the syringe, the side wall of the piston cylinder is provided with a ventilation hole corresponding to the strip-shaped through hole, and a piston is arranged in the piston cylinder, and the piston is connected with the push-pull handle through a U-shaped connecting rod. The side wall of the needle is provided with a ventilation tube, the opening end of the ventilation tube is set towards the needle seat, and the side wall of the ventilation tube close to the closed end is provided with an air intake hole, and the air intake hole and the opening end of the ventilation tube are provided with air filter membrane. The dosing device of the present invention is simple in structure, easy to use, and can effectively prevent cross-infection of the liquid medicine when operating the syringe, and the needle of the dosing device has a ventilation tube, which can maintain the air pressure balance inside and outside the medicine bottle during the medicine pumping process , making the dosing operation more labor-saving and improving the work efficiency of dosing.
Description
Technical field
The present invention relates to technical field of medical instruments, be specifically related to a kind of medical injection chemicals dosing plant.
Background technology
At present, the medicine adding syringe generally using in hospital is common syringe, formed by syringe, piston and push rod, medical personnel move by push rod push-and-pull piston in the time of operation, realize the operation such as aspiration medicinal liquid, admixing medical solutions, the process of making up a prescription is: syringe is inserted and in medicinal liquid bottle, extracts a small amount of medicinal liquid; Then extract syringe and insert in powdered medicine bottle, liquid medicine injection is entered in powdered medicine bottle, after medicated powder and medicinal liquid dissolve completely, then extracting mixed liquor out and inject in infusion bottle.But find in actual use, medical personnel are in the time carrying out the operations such as aspiration medicinal liquid, admixing medical solutions, and finger can touch push rod, there is the contaminated possibility of medicinal liquid, easily cause cross infection.And make up a prescription in process above-mentioned, because medicine bottle is hermetically-sealed construction, while therefore operation, can produce certain Negative Pressure Difference, make very effort of operation.
Summary of the invention
The object of the invention is the deficiency for solving the problems of the technologies described above, a kind of medical injection chemicals dosing plant is provided.
The present invention is the deficiency solving the problems of the technologies described above, and the technical scheme adopting is: a kind of medical injection chemicals dosing plant, comprise syringe, syringe needle, needle holder and push-pull device at fixed, and syringe needle is fixedly installed in needle holder, and syringe is connected by head and needle holder;
The afterbody of described syringe is blind end, syringe along the circumferential direction offers strip through-hole by caudal sidewall, described push-pull device at fixed comprises piston cylinder, piston, U-shaped connecting rod and push-pull handle, piston cylinder is the arc shell of an end opening, piston cylinder is sticked at syringe by caudal outer wall, and the opening of piston cylinder is towards the cephalad direction setting of syringe, described piston cylinder is provided with passage near the position of corresponding strip through-hole on the sidewall of blind end, between piston cylinder and syringe, realize and being communicated with by strip through-hole and passage, in piston cylinder, be provided with piston, piston is connected with push-pull handle by U-shaped connecting rod, the opening direction of described U-shaped connecting rod is contrary with the opening direction of piston cylinder, one end of U-shaped connecting rod is placed in piston cylinder and is fixedly connected with piston, the other end of U-shaped connecting rod is placed in outside piston cylinder and is fixedly connected with push-pull handle, on the outer wall of described piston cylinder, be provided with two guide rails along the axial direction of syringe, push-pull handle is fastened on two guide rails, push-pull handle can be along the displacement of guide rail direction, on the sidewall of described syringe near head end, be provided with baffle plate, and be provided with spring between baffle plate and U-shaped connecting rod, spring one end is fixed on baffle plate, the spring other end is fixed on the cross bar part of U-shaped connecting rod,
On the sidewall of described syringe needle, be provided with breather, breather is the cylindric body of an end opening, the other end of breather is blind end, and this blind end is spininess, the opening of described breather is towards needle holder setting, and offers air inlet on the sidewall of breather near blind end, and the open end of this air inlet and breather is provided with air-filtering membrane, on described syringe needle, be also arranged with back-up ring, back-up ring is arranged on the position between air inlet and the opening of breather.
The material of described needle holder is plastics.
beneficial effect
Drug feeding device of the present invention can be avoided operator's finger touches in dosing process to attend the meeting and touch push rod and the piston of medicinal liquid, simple in structure, easy to use, cross infection to medicinal liquid can effectively prevent operating syringe time, and the syringe needle of this chemicals dosing plant has breather, taking out the air pressure balance that can maintain in medicine process inside and outside medicine bottle, make feeding operations more laborsaving, can improve the work efficiency of dosing.
Brief description of the drawings
Fig. 1 is the structural representation of drug feeding device of the present invention;
Fig. 2 is the structural representation of drug feeding device of the present invention while taking out medicine;
Labelling in figure: 1, syringe, 2, syringe needle, 3, needle holder, 4, strip through-hole, 5, piston cylinder, 6, piston, 7, U-shaped connecting rod, 8, push-pull handle, 9, breather, 10, air inlet, 11, back-up ring, 12, baffle plate, 13, spring.
Detailed description of the invention
As shown in the figure: a kind of medical injection chemicals dosing plant, comprise syringe 1, syringe needle 2, needle holder 3 and push-pull device at fixed, syringe needle 2 is fixedly installed in needle holder 3, and the material of described needle holder 3 is plastics.Syringe 1 is connected by head and needle holder 3.The afterbody of described syringe 1 is blind end, syringe 1 along the circumferential direction offers strip through-hole 4 by caudal sidewall, described push-pull device at fixed comprises piston cylinder 5, piston 6, U-shaped connecting rod 7 and push-pull handle 8, piston cylinder 5 is the arc shell of an end opening, piston cylinder 5 is sticked at syringe 1 by caudal outer wall, and the opening of piston cylinder 5 is towards the cephalad direction setting of syringe 1, on the sidewall of described piston cylinder 5 near blind end, the position of corresponding strip through-hole 4 is provided with passage, between piston cylinder 5 and syringe 1, realize and being communicated with by strip through-hole 4 and passage, in piston cylinder 5, be provided with piston 6, piston 6 is connected with push-pull handle 8 by U-shaped connecting rod 7, the opening direction of described U-shaped connecting rod 7 is contrary with the opening direction of piston cylinder 5, one end of U-shaped connecting rod 7 is placed in piston cylinder 5 and is fixedly connected with piston 6, the other end of U-shaped connecting rod 7 is placed in outside piston cylinder 5 and is fixedly connected with push-pull handle 8, on the outer wall of described piston cylinder 5, be provided with two guide rails along the axial direction of syringe 1, push-pull handle 8 is fastened on two guide rails, push-pull handle 8 can be along the displacement of guide rail direction, on the sidewall of described syringe 1 near head end, be provided with baffle plate 12, and be provided with spring 13 between baffle plate 12 and U-shaped connecting rod 7, spring 13 one end are fixed on baffle plate 12, spring 13 other ends are fixed on the cross bar part of U-shaped connecting rod 7.
On the sidewall of described syringe needle 2, be provided with breather 9, breather 9 is the cylindric body of an end opening, the other end of breather 9 is blind end, and this blind end is spininess, the opening of described breather 9 arranges towards needle holder 3, and offer air inlet 10 on the sidewall of breather 9 near blind end, the open end of this air inlet 10 and breather 9 is provided with air-filtering membrane, on described syringe needle 2, be also arranged with back-up ring 11, back-up ring 11 is arranged on the position between air inlet 10 and the opening of breather 9.
The use procedure of drug feeding device of the present invention is as follows: the medicine in medicine bottle need to be extracted into syringe time, the first bottle stopper through medicine bottle by syringe needle, and syringe needle is pushed away always inward, until back-up ring withstands bottle stopper, then promote push-pull handle, push-pull handle is moved to syringe needle direction, push-pull handle drives piston to move to syringe needle direction, make formation negative pressure in syringe, thereby can the medicinal liquid in medicine bottle be sucked in syringe by syringe needle, when need to be by medical liquid squeezing in syringe, oppositely promote push-pull handle (now, under the elastic force effect of spring, promoting push-pull handle can be more prone to), push-pull handle is moved to syringe needle rightabout, medicinal liquid in syringe is formed to malleation, thereby medicinal liquid can be extruded, whole process herb liquid can contact piston and connecting rod, can avoid liquid medicine contamination, and taking out in medicine process, owing to forming negative pressure in medicine bottle, extraneous air can enter in medicine bottle through opening and the air inlet of breather, consistent to maintain air pressure inside and outside medicine bottle, the process that makes to take out medicine is more laborsaving.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410280011.XA CN104056320B (en) | 2014-06-23 | 2014-06-23 | A kind of medical injection chemicals dosing plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410280011.XA CN104056320B (en) | 2014-06-23 | 2014-06-23 | A kind of medical injection chemicals dosing plant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104056320A true CN104056320A (en) | 2014-09-24 |
| CN104056320B CN104056320B (en) | 2016-05-25 |
Family
ID=51544433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410280011.XA Expired - Fee Related CN104056320B (en) | 2014-06-23 | 2014-06-23 | A kind of medical injection chemicals dosing plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104056320B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050165355A1 (en) * | 2004-01-28 | 2005-07-28 | P. Rowan Smith | Intravenous catheter device |
| CN2882646Y (en) * | 2005-10-13 | 2007-03-28 | 丁玉英 | Auto mixing medicine prefilling sealing syringe for suprressed powder injection |
| CN200963388Y (en) * | 2006-10-16 | 2007-10-24 | 陈庆强 | Anti-pollution sealed medicine adding syringe |
| EP2510964A1 (en) * | 2011-04-11 | 2012-10-17 | Becton Dickinson France | Needle assembly and injection device with foldable needle protecting means |
| CN203971035U (en) * | 2014-06-23 | 2014-12-03 | 河南科技大学第一附属医院 | A kind of medical injection chemicals dosing plant |
-
2014
- 2014-06-23 CN CN201410280011.XA patent/CN104056320B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050165355A1 (en) * | 2004-01-28 | 2005-07-28 | P. Rowan Smith | Intravenous catheter device |
| CN2882646Y (en) * | 2005-10-13 | 2007-03-28 | 丁玉英 | Auto mixing medicine prefilling sealing syringe for suprressed powder injection |
| CN200963388Y (en) * | 2006-10-16 | 2007-10-24 | 陈庆强 | Anti-pollution sealed medicine adding syringe |
| EP2510964A1 (en) * | 2011-04-11 | 2012-10-17 | Becton Dickinson France | Needle assembly and injection device with foldable needle protecting means |
| CN203971035U (en) * | 2014-06-23 | 2014-12-03 | 河南科技大学第一附属医院 | A kind of medical injection chemicals dosing plant |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104056320B (en) | 2016-05-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Sun Xiangli Inventor after: Cai Danxia Inventor before: Chen Yongxia |
|
| COR | Change of bibliographic data | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160525 Termination date: 20170623 |