CN108837229A - A kind of air force medical fluid conveying device - Google Patents
A kind of air force medical fluid conveying device Download PDFInfo
- Publication number
- CN108837229A CN108837229A CN201810604998.4A CN201810604998A CN108837229A CN 108837229 A CN108837229 A CN 108837229A CN 201810604998 A CN201810604998 A CN 201810604998A CN 108837229 A CN108837229 A CN 108837229A
- Authority
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- China
- Prior art keywords
- piston
- medical fluid
- outer housing
- hole
- fluid conveying
- 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
- 239000012530 fluid Substances 0.000 title claims abstract description 37
- 239000007788 liquid Substances 0.000 claims abstract description 24
- 238000007789 sealing Methods 0.000 claims description 15
- WFJIVOKAWHGMBH-UHFFFAOYSA-N 4-hexylbenzene-1,3-diol Chemical compound CCCCCCC1=CC=C(O)C=C1O WFJIVOKAWHGMBH-UHFFFAOYSA-N 0.000 claims description 5
- 238000001802 infusion Methods 0.000 abstract description 18
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 239000003814 drug Substances 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 239000000741 silica gel Substances 0.000 description 4
- 229910002027 silica gel Inorganic materials 0.000 description 4
- 230000001225 therapeutic effect Effects 0.000 description 4
- 230000002485 urinary effect Effects 0.000 description 4
- 241000894006 Bacteria Species 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000036407 pain Effects 0.000 description 3
- 230000000202 analgesic effect Effects 0.000 description 2
- 239000008280 blood Substances 0.000 description 2
- 210000004369 blood Anatomy 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002560 therapeutic procedure Methods 0.000 description 2
- 206010002091 Anaesthesia Diseases 0.000 description 1
- 208000019901 Anxiety disease Diseases 0.000 description 1
- 208000013738 Sleep Initiation and Maintenance disease Diseases 0.000 description 1
- 230000037005 anaesthesia Effects 0.000 description 1
- 230000000151 anti-reflux effect Effects 0.000 description 1
- 230000036506 anxiety Effects 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 230000002526 effect on cardiovascular system Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 206010022437 insomnia Diseases 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 210000004072 lung Anatomy 0.000 description 1
- 229920002529 medical grade silicone Polymers 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 230000035488 systolic blood pressure Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/142—Pressure infusion, e.g. using pumps
- A61M5/145—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons
- A61M5/155—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons pressurised by gas introduced into the reservoir
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/142—Pressure infusion, e.g. using pumps
- A61M5/145—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons
- A61M5/1452—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons pressurised by means of pistons
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2205/00—General characteristics of the apparatus
- A61M2205/33—Controlling, regulating or measuring
- A61M2205/3331—Pressure; Flow
Landscapes
- Health & Medical Sciences (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (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 air force medical fluid conveying device of clinical treatment instrument, the air force medical fluid conveying device, including outer housing, boost motor, protection cap, dosing check valve, pipeline, flow-stopping clip, micro tube and female Luer pipe.The beneficial effects of the invention are as follows power is provided using atmospheric pressure and the pressure difference that air pressure in boost motor is formed, power is constant, and liquid infusion is continual and steady, accurate, safe.
Description
Technical field
The present invention relates to a kind of air force medical fluid conveying devices, belong to clinical treatment instrument.
Background technique
Patient is in the course of surgery or stage of rehabilitation can all generate different degrees of pain, suitably gives patient in art
In, Post-operation Pain Relief, can eliminate patient anxiety, fear, improve insomnia, reduce lung, cardiovascular complication, promote patient
Rehabilitation.Doctor is transfused analgesic when carrying out pain therapy to patient, through infusion pump, makes to keep one in patient blood
Timely stable blood concentration, achievees the purpose that safe treatment.Since analgesic belongs to anesthesia class drug, so when infusion
It must be that the mechanical infusion device of Hospitals at Present application, which mainly injects medical fluid, to be filled with the micro infusion of the speed of continued for constant
It sets in body inner elastomeric anther sac or silica gel balloon urinary, is that power makes medicine by the elastic force convergent force of elastic anther sac or silica gel balloon urinary material
Liquid persistently exports.
A kind of disposable pressure-adjustable infusion pump, including reservoir are disclosed in Chinese invention patent CN204890800U
Column, dosing mouth, transfusion catheter；Bottom position is provided with piston in the reservoir column, and the dosing mouth has anti-reflux valve, passes through
Dosing mouth injection of medicine into underpiston reservoir column；Stud is additionally provided in the reservoir column, stud screws in reservoir column top
If internal screw thread in, between piston and stud be equipped with spring.This disposable pressure-adjustable infusion pump mainly leans on the bullet of spring
Power provides power to piston, and disadvantage is that the elastic force of spring can change with the compressive deformation of spring, when amount of spring compression is big
When, bounce is big, and when amount of spring compression is small, bounce reduces, and causes the power provided non-constant, influences infusion flow-rate also not
It is constant.Existing hospital utilizes storage medical fluid component material there are also the infusion pump of power is provided using elastic anther sac or silica gel balloon urinary
Elastic force deformation provides liquid infusion power, and disadvantage is this elastic anther sac or silica gel balloon urinary storage anther sac in the infusion for being full of medical fluid
At initial stage, due to the full effect of medical fluid, when making to store anther sac filling maximum, elastic shrinkage pressure is maximum, as medical fluid constantly exports
Process, the medical fluid store in anther sac are constantly reduced, and capsule systolic pressure is also irregular slowly to be reduced, and drug in infusion process is caused
Infusion velocity is unstable to be slowed down.When medical fluid is remaining few, storage anther sac is very little to the pressure of medical fluid, liquid infusion speed
Infusion is declined to a great extent or be automatically stopped, causes the residual of medical fluid excessively infusion amount to be caused to reduce, influences therapeutic effect.Resilient bladder
Since natural resiliency shrinks unstable feature, cause output pressure non-constant, causes output flow unstable, therapeutic effect
Difference, and medical care and patient are unable to accurate evaluation and have been infused into human body and remaining liquid volume, may cause infusion excessively or are transfused
Dose is insufficient, life-threatening safety or influence therapeutic effect.
Summary of the invention
The object of the present invention is to provide a kind of structures, and air force medical fluid simple, easy for installation, easy to operate conveys dress
It sets, it being capable of the constant output medical fluid of power.
To solve the above problems, the technical scheme is that：A kind of air force medical fluid conveying device, including cylindrical shape
Outer housing, outer housing includes cylinder side wall and lower end wall, and outer housing lower end wall has liquid through-hole, liquid through-hole and pipeline one
End is connected, and the other end of pipeline is connected with one end of micro tube, and the micro tube other end is equipped with female Luer, micro tube and medicine
Flow-stopping clip and dosing check valve are successively arranged between fluid through-hole, which is characterized in that air hole, shell are equipped in the middle part of shell body sidewall
It is equipped with a boost motor in vivo, boost motor includes first piston, mandril, inner housing and second piston, and columnar inner housing is solid
Surely it is set to outer housing upper end, is equipped with through-hole in the middle part of inner housing lower end wall, first piston is slidably arranged on inside outer housing
Below inner housing, second piston is slidably arranged on inside inner housing, vertical between first piston and second piston to be equipped with top
Bar, mandril connect first piston and second piston, and outer housing upper port is equipped with the protection cap with venthole, second piston following table
Face and inner housing constitute negative pressure cavity, and first piston lower surface and outer housing constitute medicinal liquid cavity.
In order to drain negative pressure chamber air as far as possible, to greatest extent close to vacuum and facilitate installation, in the second piston
Surface is equipped with an exhaust check valve being vented upwards.
In order to balance the air pressure of first piston upper surface and external atmosphere pressure, first piston is enable to slide along outer housing inner wall,
The air hole is close to inner housing lower surface, in order to reach ventilative and guarantee not pollute shell into the bacterium in the air of device
Internal wall, does not pollute medical fluid, and the air hole is equipped with one layer of ventilative resistance mycoderm.
In order to simplify structure, inner housing is fixed on outer housing inner wall by save the cost, and inner housing will not be under outer housing
Sliding, the shell body sidewall includes upper casing body sidewall and lower casing body sidewall, and upper casing body sidewall internal diameter is greater than lower casing body sidewall internal diameter.
Make mandril upper end horizontal offset to limit, connect second piston with mandril more stable, described second is living
It fills in and is equipped with a groove in the middle part of lower surface, mandril upper end is connected with groove.
In order to which the maximum height reinforced mandril and limit first piston rising is unable to the air hole of covering shell body sidewall, protect
Leakproofness is demonstrate,proved, is equipped with a protrusion with inner hole in the middle part of inner housing lower end wall lower surface, mandril can be along the protrusion inner hole wall
Sliding, the inner hole wall are equipped with seal groove, are equipped with sealing ring in seal groove.
In order to which reinforcement protection lid is connected with outer housing, and quick and easy, save the cost, the protection cap and outer housing upper end
It is connected through a screw thread.
In order to enhance between first piston and outer housing, sealing performance between second piston and inner housing, described first
Sealing ring is equipped in seal groove on piston and second piston outer circumference surface.
Enter pipeline, and stiffened shell body and piping connection to guarantee in outer housing medical fluid by liquid through-hole, it is described
A cylinder-shaped protrusion is equipped in the middle part of outer housing lower end wall lower surface, protrusion forms access with liquid through-hole and pipeline.
As long as making material of the invention meets medical requirement, as sealing ring can select medical grade silicone rubber seal
Circle etc..
Present invention has the advantages that：Simple and reasonable, easy to operate, the use of exhaust check valve makes device convenient for peace
Dress, the pressure that second piston is subject to is certain, and forced area is certain, and the pressure that second piston is subject to is constant, and medical fluid output flow velocity is held
Continue constant, smaller by external interference, the use of good sealing performance and the ventilative ventilative resistance mycoderm of resistance bacterium guarantees the sterile of medical fluid
Property, infusion of therapeutic effect is good, and portable design makes the limitation of therapeutic process not receptor site and space, requires to limit without special expertise
System operates convenient for patient and medical care, is conducive to promote and apply.
Detailed description of the invention
Fig. 1 is a kind of air force medical fluid conveying device schematic diagram of the invention.
Fig. 2 is boost motor schematic diagram.
Fig. 3 is shell body sidewall air hole enlarged drawing.
In figure：1. protection cap；2. venthole；3. outer housing；4. inner housing；5. second piston；6. exhaust check valve；7. top
Bar；8. first piston；9. sealing ring；10. sealing ring；11. sealing ring；12. boost motor；13. liquid through-hole；14. ventilative resistance bacterium
Film；15. air hole；16. pipeline；17. dosing check valve；18. flow-stopping clip；19. micro tube；20. female Luer；21. negative pressure cavity；
22. medicinal liquid cavity.
Specific embodiment
As shown in Fig. 1, a kind of air force medical fluid conveying device.
A kind of air force medical fluid conveying device, including columnar outer housing 3, outer housing 3 include cylinder side wall and
Lower end wall, 3 lower end wall of outer housing have liquid through-hole 13, and liquid through-hole 13 is connected with 16 one end of pipeline, the other end of pipeline 16
It is connected with one end of micro tube 19,19 other end of micro tube is equipped with female Luer 20, between micro tube 19 and liquid through-hole 13
It is successively arranged flow-stopping clip 18 and dosing check valve 17, which is characterized in that air hole 15, outer housing 3 are equipped in the middle part of 3 side wall of outer housing
It is inside equipped with a boost motor 12, boost motor 12 includes first piston 8, mandril 7, inner housing 4 and second piston 5, columnar interior
Shell 4 is fixedly installed on 3 upper end of outer housing, is equipped with through-hole in the middle part of 4 lower end wall of inner housing, first piston 8 is slidably arranged on
Between the inside of outer housing 3 and 4 lower section of inner housing, second piston 5 is slidably arranged on inside inner housing 4, first piston 8 and the
Mandril 7 is vertically equipped between two pistons 5,3 upper port of outer housing is equipped with the protection cap 1 with venthole 2,5 following table of second piston
Face and inner housing 4 constitute negative pressure cavity 21, and 8 lower surface of first piston and outer housing 3 constitute medicinal liquid cavity 22.
5 upper surface of second piston is equipped with an exhaust check valve 6 being vented upwards.
For the air hole 15 close to 4 lower surface of inner housing, air hole 15 is equipped with one layer of ventilative resistance mycoderm 14.
3 side wall of outer housing includes upper casing body sidewall and lower casing body sidewall, and upper casing body sidewall internal diameter is greater than in lower wall
Diameter.
A groove is equipped in the middle part of 5 lower surface of second piston, 7 upper end of mandril is connected with groove, 4 lower end wall of inner housing
A protrusion with inner hole is equipped in the middle part of lower surface, mandril 7 can be slided along raised inner hole wall, which is equipped with sealing
Slot is equipped with sealing ring 10 in seal groove.
The protection cap 1 is connected through a screw thread with 3 upper end of outer housing.
Sealing ring 11 is equipped in seal groove on 8 outer circumference surface of first piston, it is close on 5 outer circumference surface of second piston
Sealing ring 9 is equipped in sealing groove.
A cylinder-shaped protrusion, protrusion and liquid through-hole 13 and pipeline 16 are equipped in the middle part of the 3 lower end wall lower surface of outer housing
Form access.
The course of work of this example：First piston 8 is shifted onto outer when a kind of air force medical fluid conveying device installation of the invention
3 bottommost of shell, second piston 5 shift 4 bottommost of inner housing onto, and 21 air of negative pressure cavity is discharged by exhaust check valve 6, when use
Flow-stopping clip 18 is closed, to 17 dosing of dosing check valve, medical fluid enters the medicinal liquid cavity 22 of 3 lower part of outer housing by pipeline 16, and first
Piston 8 moves upwards when by medical fluid external force, and 8 upper surface air of first piston is passed through 3 side wall of outer housing when movement
Air hole 15 be discharged, while mandril 7 drive second piston 5 overcome atmospheric pressure to move up along the inner wall of inner housing 4, the device
Interior 5 upper surface air of second piston is discharged by venthole 2, and negative pressure cavity 21 forms negative pressure state, when to being transfused medicine in patient body
When liquid, flow-stopping clip 18 is opened, second piston 5 is by constant pressure under atmospheric pressure effect, and second piston 5 is along inner housing 4
Wall moves downward, and mandril 7 and first piston 8 is driven to move downward, and outside air passes through the ventilative of 3 side wall air hole 15 of outer housing
It hinders mycoderm 14 and enters device, first piston 8 squeezes the medical fluid filling line 16 and micro tube 19 in medicinal liquid cavity 22, passes through micro tube
The conduit on the patient body that female Luer 20 connects is flowed into after 19 current limlitings, into patient body.
One embodiment of the present invention has been described in detail above, but the content is only preferable implementation of the invention
Example, should not be considered as limiting the scope of the invention.It is all according to all the changes and improvements made by the present patent application range
Deng should still be within the scope of the patent of the present invention.
Claims (8)
1. a kind of air force medical fluid conveying device, including columnar outer housing, outer housing include cylinder side wall and lower end
Wall, outer housing lower end wall have liquid through-hole, and liquid through-hole is connected with pipeline one end, the other end of pipeline and one end of micro tube
It is connected, the micro tube other end is equipped with female Luer, and flow-stopping clip is successively arranged between micro tube and liquid through-hole and dosing is unidirectional
Valve, which is characterized in that be equipped with air hole in the middle part of shell body sidewall, a boost motor is equipped in outer housing, boost motor includes first
Piston, mandril, inner housing and second piston, columnar inner housing are fixedly installed on outer housing upper end, in inner housing lower end wall
Portion is equipped with through-hole, and first piston is slidably arranged on inside outer housing below inner housing, and second piston is slidably arranged on
Inside inner housing, vertical between first piston and second piston to be equipped with mandril, outer housing upper port is equipped with the guarantor with venthole
Protecting cover.
2. a kind of air force medical fluid conveying device according to claim 1, it is characterised in that：Table in the second piston
Face is equipped with an exhaust check valve being vented upwards.
3. a kind of air force medical fluid conveying device according to claim 2, it is characterised in that：The air hole is close to interior
Housing lower surface, air hole are equipped with one layer of ventilative resistance mycoderm.
4. a kind of air force medical fluid conveying device according to claim 3, it is characterised in that：The shell body sidewall packet
Upper casing body sidewall and lower casing body sidewall are included, upper casing body sidewall internal diameter is greater than lower wall internal diameter.
5. a kind of air force medical fluid conveying device according to claim 4, it is characterised in that：The second piston following table
Middle face is equipped with a groove, and mandril upper end is connected with groove, and one is equipped in the middle part of inner housing lower end wall lower surface with inner hole
Protrusion, mandril can be slided along raised inner hole wall, which is equipped with seal groove, be equipped with sealing ring in seal groove.
6. a kind of air force medical fluid conveying device according to claim 1-5, it is characterised in that：The protection
Lid is connected through a screw thread with outer housing upper end.
7. according to a kind of described in any item air force medical fluid conveying devices of claim 6, it is characterised in that：Described first is living
Sealing ring is equipped in seal groove on plug and second piston outer circumference surface.
8. according to a kind of described in any item air force medical fluid conveying devices of claim 7, it is characterised in that：The outer housing
A cylinder-shaped protrusion is equipped in the middle part of lower end wall lower surface, protrusion forms access with liquid through-hole and pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810604998.4A CN108837229B (en) | 2018-06-13 | 2018-06-13 | Aerodynamic medicine liquid conveying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810604998.4A CN108837229B (en) | 2018-06-13 | 2018-06-13 | Aerodynamic medicine liquid conveying device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108837229A true CN108837229A (en) | 2018-11-20 |
| CN108837229B CN108837229B (en) | 2024-04-30 |
Family
ID=64210988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810604998.4A Active CN108837229B (en) | 2018-06-13 | 2018-06-13 | Aerodynamic medicine liquid conveying device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108837229B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109519442A (en) * | 2019-01-03 | 2019-03-26 | 杨斌堂 | Single tube self-sufficiency device |
| CN109611412A (en) * | 2019-01-03 | 2019-04-12 | 杨斌堂 | Automatic self-sufficiency device |
| CN109821101A (en) * | 2019-03-01 | 2019-05-31 | 浙江师范大学 | A kind of pneumatic infusion device being pressurized step by step |
| CN109821096A (en) * | 2019-03-01 | 2019-05-31 | 浙江师范大学 | A kind of Portable medicine injector |
| CN109611412B (en) * | 2019-01-03 | 2024-06-25 | 杨斌堂 | Automatic self-supporting device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2491028Y (en) * | 2001-08-10 | 2002-05-15 | 李军生 | constant pressure medicinal liquid transfusion device |
| CN204033945U (en) * | 2014-08-14 | 2014-12-24 | 山东颐兴医疗器械有限公司 | Novel air-prevention filter membrane fibre shedding transfusion device |
| CN209933677U (en) * | 2018-06-13 | 2020-01-14 | 山东威高集团医用高分子制品股份有限公司 | Aerodynamic liquid medicine conveying device |
-
2018
- 2018-06-13 CN CN201810604998.4A patent/CN108837229B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2491028Y (en) * | 2001-08-10 | 2002-05-15 | 李军生 | constant pressure medicinal liquid transfusion device |
| CN204033945U (en) * | 2014-08-14 | 2014-12-24 | 山东颐兴医疗器械有限公司 | Novel air-prevention filter membrane fibre shedding transfusion device |
| CN209933677U (en) * | 2018-06-13 | 2020-01-14 | 山东威高集团医用高分子制品股份有限公司 | Aerodynamic liquid medicine conveying device |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109519442A (en) * | 2019-01-03 | 2019-03-26 | 杨斌堂 | Single tube self-sufficiency device |
| CN109611412A (en) * | 2019-01-03 | 2019-04-12 | 杨斌堂 | Automatic self-sufficiency device |
| CN109611412B (en) * | 2019-01-03 | 2024-06-25 | 杨斌堂 | Automatic self-supporting device |
| CN109821101A (en) * | 2019-03-01 | 2019-05-31 | 浙江师范大学 | A kind of pneumatic infusion device being pressurized step by step |
| CN109821096A (en) * | 2019-03-01 | 2019-05-31 | 浙江师范大学 | A kind of Portable medicine injector |
| CN109821096B (en) * | 2019-03-01 | 2021-02-19 | 浙江师范大学 | Portable medicine injector |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108837229B (en) | 2024-04-30 |
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