CN209933677U - Aerodynamic liquid medicine conveying device - Google Patents
Aerodynamic liquid medicine conveying device Download PDFInfo
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- CN209933677U CN209933677U CN201820910301.1U CN201820910301U CN209933677U CN 209933677 U CN209933677 U CN 209933677U CN 201820910301 U CN201820910301 U CN 201820910301U CN 209933677 U CN209933677 U CN 209933677U
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- liquid medicine
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- outer shell
- aerodynamic
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- 239000003814 drug Substances 0.000 title claims abstract description 70
- 239000007788 liquid Substances 0.000 title claims abstract description 65
- 238000007789 sealing Methods 0.000 claims description 22
- 238000012377 drug delivery Methods 0.000 claims description 8
- 230000001681 protective effect Effects 0.000 claims description 8
- 238000001802 infusion Methods 0.000 abstract description 16
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 229940079593 drug Drugs 0.000 description 6
- 241000894006 Bacteria Species 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 229940035676 analgesics Drugs 0.000 description 3
- 239000000730 antalgic agent Substances 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
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- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
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- 239000000741 silica gel Substances 0.000 description 3
- 229910002027 silica gel Inorganic materials 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000002980 postoperative effect Effects 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 208000019901 Anxiety disease Diseases 0.000 description 1
- 241000233866 Fungi Species 0.000 description 1
- 208000013738 Sleep Initiation and Maintenance disease Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000036506 anxiety Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000002526 effect on cardiovascular system Effects 0.000 description 1
- 230000005489 elastic deformation Effects 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
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000003533 narcotic effect Effects 0.000 description 1
- 230000002685 pulmonary effect Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 210000005077 saccule Anatomy 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Images
Abstract
The utility model discloses an aerodynamic liquid medicine conveyor of clinical medical instrument, aerodynamic liquid medicine conveyor, including the shell body, the boost motor, the visor adds the medicine check valve, and the pipeline ends the current and presss from both sides, little buret and luer adapter tube. The beneficial effects of the utility model are that the pressure difference that utilizes atmospheric pressure and interior atmospheric pressure of boost formation provides power, and power is invariable, and the liquid medicine infusion lasts stable, accurate, safety.
Description
Technical Field
The utility model relates to an aerodynamic drug liquid conveying device, which belongs to clinical medical equipment.
Background
The pain of different degrees can be generated by the patient in the operation process or the postoperative rehabilitation period, and the pain treatment in the operation and the postoperative is properly given to the patient, so that the anxiety and the fear of the patient can be eliminated, the insomnia can be improved, the pulmonary and cardiovascular complications can be reduced, and the rehabilitation of the patient can be promoted. When a doctor treats pain for a patient, analgesic drugs are infused through the infusion pump, so that the blood concentration of the patient is kept stable in time, and the aim of safe treatment is fulfilled. Because analgesic drugs belong to narcotic drugs, the analgesic drugs must be infused in a trace amount at a continuous constant speed during infusion, and the mechanical infusion device applied to the hospital at present mainly injects liquid medicine into an elastic medicine bag or a silica gel balloon in the body of the device, and continuously outputs the liquid medicine by taking the elastic contractive force of the material of the elastic medicine bag or the silica gel balloon as the power.
The Chinese utility model patent CN204890800U discloses a disposable pressure-adjustable infusion pump, which comprises a liquid storage column, a drug feeding port and an infusion catheter; a piston is arranged at the bottom in the liquid storage column, the medicine adding port is provided with an anti-backflow valve, and medicines are injected into the liquid storage column below the piston through the medicine adding port; the liquid storage column is also internally provided with a stud which is screwed into an internal thread arranged at the upper part of the liquid storage column, and a spring is arranged between the piston and the stud. The disposable pressure-adjustable infusion pump mainly provides power for the piston by the elasticity of the spring, and has the disadvantages that the elasticity of the spring can change along with the compression deformation of the spring, when the compression amount of the spring is large, the rebound force is large, when the compression amount of the spring is small, the rebound force is reduced, the provided power is not constant, and the infusion flow rate is influenced to be not constant. The existing hospital also has an infusion pump which adopts an elastic medicine bag or a silica gel ball bag to provide power, and utilizes the elastic deformation of the material of a medicine liquid storage part to provide medicine liquid infusion power. When the liquid medicine is not much left, the pressure of the medicine storage bag on the liquid medicine is very little, the infusion speed of the liquid medicine is greatly reduced or the infusion is automatically stopped, so that the infusion amount is reduced due to the excessive residue of the liquid medicine, and the treatment effect is influenced. The elastic saccule has the characteristics of unstable self elastic contraction, which causes the output pressure to be not constant, causes the output flow to be unstable and has poor treatment effect, and the medical care and the patient can not accurately evaluate the amount of the liquid medicine infused into the human body and the residual liquid medicine, which may cause the excessive infusion or insufficient drug infusion amount, threatens the life safety or influences the treatment effect.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a simple structure, simple to operate, easy operation's aerodynamic force liquid medicine conveyor, output liquid medicine that can the power invariant.
In order to solve the above problem, the technical scheme of the utility model is that: an aerodynamic liquid medicine conveying device comprises a cylindrical outer shell, the outer shell comprises a cylindrical side wall and a lower end wall, the lower end wall of the outer shell is provided with a liquid medicine through hole, the liquid medicine through hole is communicated with one end of a pipeline, the other end of the pipeline is connected with one end of a micro-measuring tube, the other end of the micro-measuring tube is provided with a luer connector, a flow stopping clamp and a medicine feeding one-way valve are sequentially arranged between the micro-measuring tube and the liquid medicine through hole, the aerodynamic liquid medicine conveying device is characterized in that the middle of the side wall of the outer shell is provided with an air hole, a booster is arranged in the outer shell and comprises a first piston, a push rod, an inner shell and a second piston, the cylindrical inner shell is fixedly arranged at the upper end of the outer shell, the middle of the lower end wall of the, the ejector rod is connected with the first piston and the second piston, a protective cover with a vent hole is arranged at the upper port of the outer shell, the lower surface of the second piston and the inner shell form a negative pressure cavity, and the lower surface of the first piston and the outer shell form a liquid medicine cavity.
In order to exhaust the air in the negative pressure cavity as far as possible, approach the vacuum to the maximum extent and facilitate the installation, the upper surface of the second piston is provided with an exhaust one-way valve for exhausting air upwards.
In order to balance the air pressure of the upper surface of the first piston and the external atmospheric pressure, the first piston can slide along the inner wall of the outer shell, the air holes are close to the lower surface of the inner shell, the inner wall of the outer shell is not polluted by bacteria in the air of the air entering device in order to achieve ventilation, the liquid medicine is not polluted, and the air holes are provided with one layer of breathable bacterium blocking film.
In order to simplify the structure, practice thrift the cost, fix interior casing at outer shell inner wall, interior casing can not follow the shell body gliding, shell body lateral wall includes casing lateral wall and lower casing lateral wall, and the internal diameter of casing lateral wall is greater than the lower lateral wall internal diameter on going up.
In order to limit the horizontal offset of the upper end of the ejector rod and enable the second piston to be connected with the ejector rod more stably, a groove is formed in the middle of the lower surface of the second piston, and the upper end of the ejector rod is connected with the groove.
In order to reinforce the ejector rod and limit the maximum rising height of the first piston to be incapable of covering the air holes in the side wall of the outer shell and ensure the sealing property, the middle of the lower surface of the lower end wall of the inner shell is provided with a bulge with an inner hole, the ejector rod can slide along the inner hole wall of the bulge, the inner hole wall of the bulge is provided with a sealing groove, and a sealing ring is arranged in the sealing groove.
In order to reinforce the connection between the protective cover and the outer shell, and realize rapidness, simplicity and cost saving, the protective cover is in threaded connection with the upper end of the outer shell.
In order to enhance the sealing performance between the first piston and the outer shell and between the second piston and the inner shell, sealing rings are arranged in sealing grooves in the outer circumferential surfaces of the first piston and the second piston.
In order to ensure that the liquid medicine in the outer shell enters the pipeline through the liquid medicine through hole and reinforce the connection between the outer shell and the pipeline, the middle part of the lower surface of the lower end wall of the outer shell is provided with a cylindrical bulge which forms a passage with the liquid medicine through hole and the pipeline.
The manufacturing material of the utility model can meet the medical requirements, and the sealing ring can be selected from medical silicon rubber sealing rings and the like.
The utility model has the advantages that: simple structure is reasonable, high durability and convenient operation, the use of exhaust check valve makes the device installation of being convenient for, the pressure that the second piston received is certain, the atress area is certain, the constancy of pressure that the second piston received, liquid medicine output flow rate lasts invariably, it is less to receive external disturbance, good sealing performance with hinder the ventilative use that blocks the fungus membrane of breathing freely, guarantee the aseptic nature of liquid medicine, infusion treatment is effectual, portable design makes the treatment process not receive the restriction in position and space, there is not special requirement restriction, be convenient for patient and medical operation, do benefit to popularization and application.
Drawings
Fig. 1 is a schematic view of an aerodynamic drug solution delivery device of the present invention.
Fig. 2 is a schematic view of the booster.
FIG. 3 is an enlarged view of the ventilation holes on the side wall of the outer casing.
In the figure: 1. a protective cover; 2. a vent hole; 3. an outer housing; 4. an inner housing; 5. a second piston; 6. an exhaust check valve; 7. a top rod; 8. a first piston; 9. a seal ring; 10. a seal ring; 11. a seal ring; 12. a booster; 13. a liquid medicine through hole; 14. a breathable bacteria-blocking film; 15. air holes are formed; 16. a pipeline; 17. a dosing one-way valve; 18. a flow stopping clip; 19. a micro-measuring tube; 20. a luer fitting; 21. a negative pressure chamber; 22. a liquid medicine cavity.
Detailed Description
As shown in fig. 1, an aerodynamic drug delivery device.
An aerodynamic liquid medicine conveying device comprises a cylindrical outer shell 3, the outer shell 3 comprises a cylindrical side wall and a lower end wall, the lower end wall of the outer shell 3 is provided with a liquid medicine through hole 13, the liquid medicine through hole 13 is communicated with one end of a pipeline 16, the other end of the pipeline 16 is connected with one end of a micro tube 19, the other end of the micro tube 19 is provided with a luer connector 20, a flow stopping clamp 18 and a medicine adding one-way valve 17 are sequentially arranged between the micro tube 19 and the liquid medicine through hole 13, the aerodynamic liquid medicine conveying device is characterized in that the middle part of the side wall of the outer shell 3 is provided with a vent hole 15, a booster 12 is arranged in the outer shell 3, the booster 12 comprises a first piston 8, a mandril 7, an inner shell 4 and a second piston 5, the cylindrical inner shell 4 is fixedly arranged at the upper end of the outer shell 3, the middle part of the lower end wall, an ejector rod 7 is vertically arranged between the first piston 8 and the second piston 5, a protective cover 1 with a vent hole 2 is arranged at the upper port of the outer shell 3, the lower surface of the second piston 5 and the inner shell 4 form a negative pressure cavity 21, and the lower surface of the first piston 8 and the outer shell 3 form a liquid medicine cavity 22.
The upper surface of the second piston 5 is provided with an exhaust one-way valve 6 for exhausting air upwards.
The air holes 15 are close to the lower surface of the inner shell 4, and a layer of air permeable bacteria-resistant film 14 is arranged on the air holes 15.
The 3 lateral walls of shell body include last casing lateral wall and lower casing lateral wall, go up casing lateral wall internal diameter and be greater than the lower lateral wall internal diameter.
The middle part of the lower surface of the second piston 5 is provided with a groove, the upper end of the ejector rod 7 is connected with the groove, the middle part of the lower surface of the lower end wall of the inner shell 4 is provided with a bulge with an inner hole, the ejector rod 7 can slide along the bulge inner hole wall, the bulge inner hole wall is provided with a sealing groove, and a sealing ring 10 is arranged in the sealing groove.
The protective cover 1 is connected with the upper end of the outer shell 3 through threads.
And a sealing ring 11 is arranged in a sealing groove on the outer circumferential surface of the first piston 8, and a sealing ring 9 is arranged in a sealing groove on the outer circumferential surface of the second piston 5.
The middle part of the lower end wall of the outer shell 3 is provided with a cylindrical bulge which forms a passage with the liquid medicine through hole 13 and the pipeline 16.
The working process of the example is as follows: the utility model relates to an aerodynamic liquid medicine conveying device, when being installed, a first piston 8 is pushed to the bottommost part of an outer shell 3, a second piston 5 is pushed to the bottommost part of an inner shell 4, negative pressure cavity 21 air is discharged through an exhaust check valve 6, when in use, a flow stopping clamp 18 is closed, medicine is added to a medicine adding check valve 17, liquid medicine enters a liquid medicine cavity 22 at the lower part of the outer shell 3 through a pipeline 16, the first piston 8 moves upwards under the action of external force of the liquid medicine, when in movement, the upper surface air of the first piston 8 is discharged through a vent hole 15 on the side wall of the outer shell 3, meanwhile, an ejector rod 7 drives the second piston 5 to overcome atmospheric pressure and move upwards along the inner wall of the inner shell 4, the upper surface air of the second piston 5 in the device is discharged through a vent hole 2, the negative pressure cavity 21 forms a negative pressure state, when the liquid medicine is infused to a patient body, a flow stopping, the second piston 5 moves downwards along the inner wall of the inner shell 4 to drive the mandril 7 and the first piston 8 to move downwards, outside air enters the device through the air-permeable bacteria-blocking film 14 of the air holes 15 on the side wall of the outer shell 3, the first piston 8 extrudes the liquid medicine injection pipeline 16 and the micro-tube 19 in the liquid medicine cavity 22, and the liquid medicine flows into a catheter on the body of a patient connected with the luer 20 after being limited by the micro-tube 19 to enter the body of the patient.
While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention, and should not be considered as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.
Claims (8)
1. An aerodynamic liquid medicine conveying device comprises a cylindrical outer shell, the outer shell comprises a cylindrical side wall and a lower end wall, the lower end wall of the outer shell is provided with a liquid medicine through hole, the liquid medicine through hole is communicated with one end of a pipeline, the other end of the pipeline is connected with one end of a micro-measuring tube, the other end of the micro-measuring tube is provided with a luer connector, a flow stopping clamp and a medicine feeding one-way valve are sequentially arranged between the micro-measuring tube and the liquid medicine through hole, the aerodynamic liquid medicine conveying device is characterized in that the middle of the side wall of the outer shell is provided with an air hole, a booster is arranged in the outer shell and comprises a first piston, a push rod, an inner shell and a second piston, the cylindrical inner shell is fixedly arranged at the upper end of the outer shell, the middle of the lower end wall of the, the upper port of the outer shell is provided with a protective cover with a vent hole.
2. An aerodynamic liquid drug delivery device according to claim 1, wherein: and the upper surface of the second piston is provided with an exhaust one-way valve for exhausting air upwards.
3. An aerodynamic liquid drug delivery device according to claim 2, wherein: the air holes are close to the lower surface of the inner shell, and a layer of air-permeable bacterium-blocking film is arranged on the air holes.
4. An aerodynamic liquid drug delivery device according to claim 3, wherein: the shell body lateral wall includes last shell body lateral wall and lower shell body lateral wall, goes up shell body lateral wall internal diameter and is greater than the lower lateral wall internal diameter.
5. An aerodynamic liquid drug delivery device according to claim 4, wherein: the middle of the lower surface of the second piston is provided with a groove, the upper end of the ejector rod is connected with the groove, the middle of the lower surface of the lower end wall of the inner shell is provided with a bulge with an inner hole, the ejector rod can slide along the wall of the bulge inner hole, the wall of the bulge inner hole is provided with a sealing groove, and a sealing ring is arranged in the sealing groove.
6. An aerodynamic liquid drug delivery device according to any of claims 1-5, wherein: the protective cover is connected with the upper end of the outer shell through threads.
7. An aerodynamic liquid drug delivery device according to claim 6, wherein: and sealing rings are arranged in the sealing grooves on the outer circumferential surfaces of the first piston and the second piston.
8. An aerodynamic liquid drug delivery device according to claim 7, wherein: the middle of the lower surface of the lower end wall of the outer shell is provided with a cylindrical bulge, and the bulge, the liquid medicine through hole and the pipeline form a passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820910301.1U CN209933677U (en) | 2018-06-13 | 2018-06-13 | Aerodynamic liquid medicine conveying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820910301.1U CN209933677U (en) | 2018-06-13 | 2018-06-13 | Aerodynamic liquid medicine conveying device |
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| Publication Number | Publication Date |
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| CN209933677U true CN209933677U (en) | 2020-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820910301.1U Active CN209933677U (en) | 2018-06-13 | 2018-06-13 | Aerodynamic liquid medicine conveying device |
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| CN (1) | CN209933677U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108837229A (en) * | 2018-06-13 | 2018-11-20 | 山东威高集团医用高分子制品股份有限公司 | A kind of air force medical fluid conveying device |
-
2018
- 2018-06-13 CN CN201820910301.1U patent/CN209933677U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108837229A (en) * | 2018-06-13 | 2018-11-20 | 山东威高集团医用高分子制品股份有限公司 | A kind of air force medical fluid conveying device |
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