CN114632218A - Air pressure driving injection device - Google Patents
Air pressure driving injection device Download PDFInfo
- Publication number
- CN114632218A CN114632218A CN202210248209.4A CN202210248209A CN114632218A CN 114632218 A CN114632218 A CN 114632218A CN 202210248209 A CN202210248209 A CN 202210248209A CN 114632218 A CN114632218 A CN 114632218A
- Authority
- CN
- China
- Prior art keywords
- injection
- piece
- medicine
- spring
- injection device
- 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
- 238000002347 injection Methods 0.000 title claims abstract description 142
- 239000007924 injection Substances 0.000 title claims abstract description 142
- 239000007788 liquid Substances 0.000 claims abstract description 68
- 239000003814 drug Substances 0.000 claims abstract description 63
- 238000000034 method Methods 0.000 claims abstract description 7
- 230000008569 process Effects 0.000 claims abstract description 5
- 239000011521 glass Substances 0.000 claims description 12
- 238000004891 communication Methods 0.000 claims description 5
- 230000001737 promoting effect Effects 0.000 claims description 2
- 238000005192 partition Methods 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 description 7
- 230000009471 action Effects 0.000 description 6
- NOESYZHRGYRDHS-UHFFFAOYSA-N insulin Chemical compound N1C(=O)C(NC(=O)C(CCC(N)=O)NC(=O)C(CCC(O)=O)NC(=O)C(C(C)C)NC(=O)C(NC(=O)CN)C(C)CC)CSSCC(C(NC(CO)C(=O)NC(CC(C)C)C(=O)NC(CC=2C=CC(O)=CC=2)C(=O)NC(CCC(N)=O)C(=O)NC(CC(C)C)C(=O)NC(CCC(O)=O)C(=O)NC(CC(N)=O)C(=O)NC(CC=2C=CC(O)=CC=2)C(=O)NC(CSSCC(NC(=O)C(C(C)C)NC(=O)C(CC(C)C)NC(=O)C(CC=2C=CC(O)=CC=2)NC(=O)C(CC(C)C)NC(=O)C(C)NC(=O)C(CCC(O)=O)NC(=O)C(C(C)C)NC(=O)C(CC(C)C)NC(=O)C(CC=2NC=NC=2)NC(=O)C(CO)NC(=O)CNC2=O)C(=O)NCC(=O)NC(CCC(O)=O)C(=O)NC(CCCNC(N)=N)C(=O)NCC(=O)NC(CC=3C=CC=CC=3)C(=O)NC(CC=3C=CC=CC=3)C(=O)NC(CC=3C=CC(O)=CC=3)C(=O)NC(C(C)O)C(=O)N3C(CCC3)C(=O)NC(CCCCN)C(=O)NC(C)C(O)=O)C(=O)NC(CC(N)=O)C(O)=O)=O)NC(=O)C(C(C)CC)NC(=O)C(CO)NC(=O)C(C(C)O)NC(=O)C1CSSCC2NC(=O)C(CC(C)C)NC(=O)C(NC(=O)C(CCC(N)=O)NC(=O)C(CC(N)=O)NC(=O)C(NC(=O)C(N)CC=1C=CC=CC=1)C(C)C)CC1=CN=CN1 NOESYZHRGYRDHS-UHFFFAOYSA-N 0.000 description 6
- 230000002093 peripheral effect Effects 0.000 description 4
- 102000004877 Insulin Human genes 0.000 description 3
- 108090001061 Insulin Proteins 0.000 description 3
- 229940125396 insulin Drugs 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000008155 medical solution Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Images
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
- A61M5/1452—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons pressurised by means of pistons
- A61M5/14526—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons pressurised by means of pistons the piston being actuated by fluid pressure
-
- 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
- A61M5/1456—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons pressurised by means of pistons with a replaceable reservoir comprising a piston rod to be moved into the reservoir, e.g. the piston rod is part of the removable 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
- A61M5/14586—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons pressurised by means of a flexible diaphragm
- A61M5/14593—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons pressurised by means of a flexible diaphragm the diaphragm being actuated by fluid pressure
Landscapes
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Hematology (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Veterinary Medicine (AREA)
- Heart & Thoracic Surgery (AREA)
- Public Health (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention discloses a pneumatic driving injection device, comprising: a control for holding compressed gas's pressure chamber, an injection chamber for holding the liquid medicine, a film for separating pressure chamber and injection chamber, a first injection piece for being used for to the human body continuous injection liquid medicine, a second injection piece for being used for to first injection piece ration injection liquid medicine, a communicating pipe for being used for communicateing first injection piece and second injection piece and be used for controlling the notes liquid process of second injection piece, the injection chamber is equipped with medicine mouth and goes out the medicine mouth, first injection piece and second injection piece all communicate through check valve and play medicine mouth. By using the air pressure driving injection device provided by the invention, the injection speed and the injection precision of the injector can be improved.
Description
Technical Field
The invention relates to the technical field of injectors, in particular to a pneumatic driving injection device.
Background
In the prior art, medical personnel usually utilize mechanical insulin pump to carry out the insulin injection operation that lasts to the patient, and wherein, mechanical insulin pump needs the incessant injection medicine for a long time, and the piston thrust of syringe is unstable probably appeared in this process, and then leads to the unstable problem of injection volume of syringe, and the treatment that finally can lead to the patient is relatively poor.
In summary, how to improve the injection speed and accuracy of the injector is a problem to be solved by those skilled in the art.
Disclosure of Invention
In view of the above, the present invention provides a pneumatically driven injection device, which can improve the injection speed and accuracy of an injector.
In order to achieve the above purpose, the invention provides the following technical scheme:
a pneumatically driven injection device, comprising: the injection chamber is equipped with medicine adding mouth and medicine outlet, first injection with the second injection all through the check valve with medicine outlet intercommunication.
Preferably, the first injection member includes a capillary glass tube communicating with the check valve and an indwelling needle communicating with the capillary glass tube.
Preferably, the second injection part comprises an outer cylinder, an inner cylinder capable of moving up and down relative to the inner wall of the outer cylinder and a connecting part, the inner cylinder is used for containing the liquid medicine for quantitative injection, and the bottom of the outer cylinder is connected with the top of the connecting part;
the control piece includes can follow the piston that the inner wall of inner tube reciprocated, be used for promoting the push rod that the piston removed and can follow the slide valve that the inner wall of connecting portion reciprocated, the inner tube with the slide valve intercommunication, the upper portion of connecting portion be equipped with the inlet of check valve intercommunication, the lower part of connecting portion be equipped with the liquid outlet of communicating pipe intercommunication, the slide valve be equipped with be used for with the inlet or the circulation mouth of liquid outlet selective intercommunication.
Preferably, the control member further comprises a reset member for automatically resetting the push rod.
Preferably, the reset member includes a first spring and a second spring, the first spring is wound between the outer peripheral portion of the push rod and the top of the piston, the second spring is wound between the outer peripheral portion of the inner cylinder and the bottom of the outer cylinder, and the elastic force of the first spring is greater than the elastic force of the second spring.
Preferably, the top of the push rod is provided with a pressing part.
Preferably, the injection cavity is of a sphere structure, a cube structure, a cuboid structure, a cylinder structure or a polyhedron structure.
Preferably, still include the casing, the pressure chamber, the injection chamber, first injection spare, second injection spare, communicating pipe and the control piece all locate in the casing, the casing be equipped with add the first opening of medicine mouth intercommunication and be used for passing the second opening of control piece.
When the pneumatic driving injection device provided by the invention is used, firstly, the first injection piece and the second injection piece can be communicated with the medicine outlet by utilizing the one-way valve, medicine liquid is injected into the injection cavity through the medicine adding port, then the medicine adding port is blocked, and then the pressure cavity can be pressed to deform the film and transmit the pressure to the injection cavity, so that the medicine liquid flows into the first injection piece and the second injection piece through the one-way valve. The control piece can be used for controlling the second injection piece to perform liquid injection operation when the dosage of the liquid medicine needs to be increased, so that the liquid medicine in the second injection piece enters the first injection piece through the communicating pipe and then flows into the human body. The driving pressure of the injection operation is air pressure transmission, so that the influence of friction force on each part in the liquid medicine transmission process can be ensured to be low, the injection precision and the injection speed are improved, and the phenomenon that the air pressure is weakened due to aging of the device along with the time is avoided.
In summary, the pneumatic injection device provided by the invention can improve the injection speed and precision of the injector.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic view of a pneumatically driven injection device according to the present invention;
FIG. 2 is a schematic view of the structure of the slide valve in communication with the liquid inlet;
fig. 3 is a schematic structural view of the slide valve when communicating with the liquid outlet.
In fig. 1-3:
1 is a pressure cavity, 2 is an injection cavity, 3 is a film, 4 is a first injection piece, 5 is a second injection piece, 6 is a communicating pipe, 7 is a control piece, 8 is a dosing port, 9 is a one-way valve, 10 is a medicine outlet, 11 is a capillary glass tube, 12 is an indwelling needle, 13 is an outer cylinder, 14 is an inner cylinder, 15 is a connecting part, 16 is a piston, 17 is a push rod, 18 is a sliding valve, 19 is a liquid inlet, 20 is a liquid outlet, 21 is a circulation port, 22 is a composite piece, 23 is a first spring, 24 is a second spring, 25 is a pressing part, and 26 is a shell.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The core of the invention is to provide a pneumatic injection device which can improve the injection speed and precision of an injector.
Referring to fig. 1 to 3, fig. 1 is a schematic structural diagram of a pneumatic injection device according to the present invention; FIG. 2 is a schematic view of the structure of the slide valve in communication with the liquid inlet; fig. 3 is a schematic structural view when the slide valve is communicated with the liquid outlet.
This particular embodiment provides a pneumatically driven injection device, comprising: the injection cavity 2 is provided with a medicine adding port 8 and a medicine outlet port 10, and the first injection piece 4 and the second injection piece 5 are communicated with the medicine outlet port 10 through a one-way valve 9.
It should be noted that the pressure chamber 1 is sealed with compressed gas, and the pressure chamber 1 is mainly used for providing pressure to the medical liquid in the injection chamber 2. Because the film 3 is sealed between the pressure chamber 1 and the injection chamber 2, the film 3 is used for sealing the liquid medicine in the injection chamber 2, as shown in fig. 1, one side wall surface of the film 3 is used for contacting the liquid medicine, the other side wall surface of the film 3 is used for contacting the compressed gas in the pressure chamber 1, and the film 3 is of a flexible structure, the pressure of the pressure chamber 1 can be transmitted to the injection chamber 2 at any time, so that the liquid medicine is transmitted to the first injection part 4 and the second injection part under the action of the pressure difference.
It should be noted that the pressure of the injection chamber 2 and the pressure in the pressure chamber 1 are equal, it can be assumed that the volume of the pressure chamber 1 is VB and the internal pressure of the pressure chamber 1 is PB in the initial state, and when the liquid medicine is completely discharged and the compressed gas fills the whole pressure chamber 1, the volume of the pressure chamber 1 is VC + VA and the internal pressure of the pressure chamber 1 is PC. According to Boyle's law: the pressure and the volume of the quantitative gas in the closed container are in inverse relation at constant temperature, namely: p1 × V1 ═ P2 × V2.
From the above equation: PB VB ═ PC ═ VC ═ PC (VA + VB).
From boyle's law, it is known that when the volume of gas in a closed container increases, the pressure inside the closed container decreases, i.e., PB is greater than PC. Let PC be K × PB, K being less than 1.
PB × VB ═ PC (VA + VB) ═ KPB (VA + VB), where VB ═ K (VA + VB).
The following can be obtained: VB (VA) K/(1-K).
The pressure chamber 1 of the present application is manufactured according to the above principle, that is, in a communicated closed chamber, the pressure at each internal part is equal. The pressure chamber 1 can be designed into any shape, meanwhile, as the pressure chamber 1 is filled with gas, the liquid medicine can be driven to move by air pressure, and the structure is simpler and lighter compared with a metal spring structure. The device has the advantages that: in the whole pressure transmission process, the friction influence on each part is small, the liquid medicine transmission precision is higher, the response speed of liquid medicine transmission is higher, and the device structure can not age along with the lapse of time to cause pressure weakening.
Can be in the in-service use in-process, according to actual conditions and actual demand, confirm pressure chamber 1, injection chamber 2, film 3, first injection 4, second injection 5, communicating pipe 6, control 7, add medicine mouth 8 and go out shape, structure, size, position etc. of medicine mouth 10.
When the pneumatic injection device provided by the invention is used, firstly, the first injection part 4 and the second injection part 5 can be communicated with the medicine outlet 10 by using the one-way valve 9, medicine liquid is injected into the injection cavity 2 through the medicine adding port 8, then the medicine adding port 8 is blocked, and then the pressure cavity 1 can be pressed to deform the film 3 and transmit the pressure to the injection cavity 2, so that the medicine liquid flows into the first injection part 4 and the second injection part 5 through the one-way valve 9. The liquid medicine injection device can continuously inject the required liquid medicine into a human body through the first injection part 4, and when the amount of the liquid medicine needs to be increased, the control part 7 can be used for controlling the second injection part 5 to perform liquid injection operation, so that the liquid medicine in the second injection part 5 enters the first injection part 4 through the communicating pipe 6 and then flows into the human body. The driving pressure of the injection operation is air pressure transmission, so that the influence of friction force on each part in the liquid medicine transmission process can be ensured to be low, the injection precision and the injection speed are improved, and the phenomenon that the air pressure is weakened due to aging of the device along with the time is avoided.
In summary, the pneumatic injection device provided by the invention can improve the injection speed and precision of the injector.
On the basis of the above embodiment, it is preferable that the first injection member 4 includes a capillary glass tube 11 communicating with the check valve 9 and an indwelling needle 12 communicating with the capillary glass tube 11.
The needle of the indwelling needle 12 is insertable into the human body to perform a liquid medicine injection operation on the human body. The capillary glass tube 11 is a mechanism for restricting the flow of the medical fluid, and the flow rate of the medical fluid flowing through the capillary glass tube 11 is proportional to the pressure in the injection chamber 2 in a case where the size of the capillary glass tube 11 is constant. That is, the capillary glass tube 11 and the indwelling needle 12 are provided in cooperation, and the medical solution can be continuously injected into the human body.
In the actual application process, the shape, structure, size, position and the like of the capillary glass tube 11 and the indwelling needle 12 can be determined according to the actual situation and the actual requirements.
Preferably, the second injection part 5 comprises an outer cylinder 13, an inner cylinder 14 capable of moving up and down relative to the inner wall of the outer cylinder 13 and a connecting part 15, wherein the inner cylinder 14 is used for containing a fixed amount of liquid medicine for injection, and the bottom of the outer cylinder 13 is connected with the top of the connecting part 15; the control part 7 comprises a piston 16 capable of moving up and down along the inner wall of the inner cylinder 14, a push rod 17 for pushing the piston 16 to move and a sliding valve 18 capable of moving up and down along the inner wall of the connecting part 15, the inner cylinder 14 is communicated with the sliding valve 18, the upper part of the connecting part 15 is provided with a liquid inlet 19 communicated with the one-way valve 9, the lower part of the connecting part 15 is provided with a liquid outlet 20 communicated with the communicating pipe 6, and the sliding valve 18 is provided with a flow port 21 selectively communicated with the liquid inlet 19 or the liquid outlet 20.
It should be noted that the first injection part 4 and the second injection part 5 are both communicated with the injection cavity 2 through the check valve 9, and the check valve 9 can control the flow direction of the liquid medicine, so that the liquid medicine can only flow from bottom to top. The inner cylinder 14 is used for containing liquid medicine for quantitative injection, when the injection amount of the liquid medicine needs to be increased for a human body, the piston 16 and the push rod 17 can be pushed to move, so that the piston 16 pushes the liquid medicine in the inner cylinder 14 and the inner cylinder 14 to move downwards, the sliding valve 18 can be driven to move downwards when the inner cylinder 14 moves downwards, and the flow opening 21 of the sliding valve 18 can be selectively communicated with the liquid inlet 19 or the liquid outlet 20 by sliding the sliding valve 18 upwards and downwards. When the circulation port 21 moves downwards to be aligned with the liquid outlet 20, the push rod 17 is continuously pushed, so that the liquid medicine in the inner cylinder 14 passes through the liquid outlet 20, the communicating pipe 6 and the indwelling needle 12 and is then injected into the human body. When the piston 16 and the push rod 17 are moved upwards, the through hole 21 and the liquid inlet 19 are aligned, so that the inner cylinder 14 can suck the liquid medicine from the injection cavity 2 again under the action of the pressure difference, the one-way valve 9 and the like.
The shapes, structures, dimensions, etc. of the outer cylinder 13, the inner cylinder 14, the connecting portion 15, the piston 16, the push rod 17, and the slide valve 18 can be determined in actual use according to actual conditions and actual requirements.
Preferably, the control member 7 also comprises a return member 22 for automatically returning the push rod 17. That is, after the injection of a predetermined amount is completed, the push rod 17 and the piston 16 are returned to their initial positions by the return action of the return, so that the opening 21 and the inlet 19 are aligned, and the inner cylinder 14 draws the liquid medicine from the injection chamber 2 again.
In addition to the above-mentioned embodiments, it is preferable that the restoring member 22 includes a first spring 23 and a second spring 24, the first spring 23 is wound between the outer peripheral portion of the push rod 17 and the top portion of the piston 16, the second spring 24 is wound between the outer peripheral portion of the inner cylinder 14 and the bottom portion of the outer cylinder 13, and the elastic force of the first spring 23 is larger than the elastic force of the second spring 24.
It should be noted that the operation of the sliding valve 18 is schematically shown in fig. 2 and 3, wherein the elastic force of the first spring 23 is greater than the elastic force of the second spring 24, so that the flow port 21 of the sliding valve 18 and the liquid inlet 19 are aligned in the initial state, so that the liquid medicine in the injection cavity 2 can flow into the inner cylinder 14 under the action of the pressure difference and the check valve 9. When the push rod 17 is pressed by the operator, the piston 16, the inner cylinder 14, the sliding valve 18 and other components all move downward, at this time, the circulation port 21 moves downward to be opposite to the liquid outlet 20, the operator continues to press the push rod 17, and the liquid medicine in the inner cylinder 14 can be injected into the human body through the liquid outlet 20, the communication pipe 6 and the indwelling needle 12. After the push rod 17 is released, the push rod 17 can move upwards under the elastic action of the first spring 23 and the second spring 24, so that the communication port 21 and the liquid inlet 19 are aligned, and the liquid medicine in the injection cavity 2 flows into the inner barrel 14 again under the action of the pressure difference and the one-way valve 9.
The shape, structure, size and the like of the first spring 23 and the second spring 24 can be determined during actual use according to actual conditions and actual requirements.
Preferably, the top of the push rod 17 is provided with a pressing portion 25, so that the operator can press the push rod 17 through the pressing portion 25, that is, when the operator needs to inject additional fixed amount of liquid medicine, the operator can press the pressing portion 25.
Preferably, the injection cavity 2 is a sphere structure, a cube structure, a cuboid structure, a cylinder structure or a polyhedron structure. The pressure chamber 1 may be designed in any shape to increase the volume of the pressure chamber 1 as much as possible by using a space in the pump in a limited space in order to improve the injection accuracy. It is not necessary to limit the design to a cylindrical syringe, and the pressure chamber 1 may be designed to have a structure other than a cylindrical shape.
Preferably, the device further comprises a shell 26, the pressure chamber 1, the injection chamber 2, the first injection part 4, the second injection part 5, the communicating pipe 6 and the control part 7 are all arranged in the shell 26, and the shell 26 is provided with a first opening communicated with the dosing port 8 and a second opening used for penetrating through the control part 7, so that the device is compact in overall structure and small in occupied space.
The shape, structure, size and the like of the housing 26 can be determined according to actual conditions and actual requirements in the actual application process.
It should be noted that the first injection part 4 and the second injection part 5, the first spring 23 and the second spring 24, and the first opening and the second opening are mentioned in the present application, wherein the first and the second are only for distinguishing the position difference and are not sequentially arranged.
It should be noted that the directions and positional relationships indicated by "above" and "below" in the present application are based on the directions and positional relationships shown in the drawings, and are only for the convenience of simplifying the description and facilitating the understanding, but do not indicate or imply that the device or element referred to must have a specific direction, be configured and operated in a specific direction, and thus, should not be construed as limiting the present invention.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. Any combination of all embodiments provided by the present invention is within the scope of the present invention, and will not be described herein.
The pneumatically driven injection device provided by the present invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (8)
1. A pneumatically driven injection device, comprising: the injection device comprises a pressure cavity (1) for containing compressed gas, an injection cavity (2) for containing liquid medicine, a partition, the pressure cavity (1) and a film (3) of the injection cavity (2), a communication pipe (6) of the first injection piece (4) and a control piece (7) used for controlling the liquid injection process of the second injection piece (5), wherein the film (3) is used for continuously injecting the liquid medicine to a human body, the second injection piece (5) is used for communicating the first injection piece (4) with the second injection piece (5), the injection cavity (2) is provided with a medicine adding port (8) and a medicine outlet (10), and the first injection piece (4) and the second injection piece (5) are communicated with the medicine outlet (10) through a one-way valve (9).
2. A pneumatically driven injection device according to claim 1, wherein said first injection member (4) comprises a capillary glass tube (11) communicating with said check valve (9) and an indwelling needle (12) communicating with said capillary glass tube (11).
3. A pneumatically driven injection device as claimed in claim 1, wherein said second injection member (5) comprises an outer cylinder (13), an inner cylinder (14) movable up and down with respect to the inner wall of said outer cylinder (13), and a connecting portion (15), said inner cylinder (14) being adapted to contain said liquid medicine for a fixed amount of injection, the bottom of said outer cylinder (13) being connected to the top of said connecting portion (15);
control piece (7) including can follow piston (16) that the inner wall of inner tube (14) reciprocated, be used for promoting push rod (17) that piston (16) removed and can follow slide valve (18) that the inner wall of connecting portion (15) reciprocated, inner tube (14) with slide valve (18) intercommunication, the upper portion of connecting portion (15) be equipped with inlet (19) of check valve (9) intercommunication, the lower part of connecting portion (15) be equipped with liquid outlet (20) of communicating pipe (6) intercommunication, slide valve (18) be equipped with be used for with inlet (19) or flow opening (21) of liquid outlet (20) selective intercommunication.
4. A pneumatically driven injection device as claimed in claim 3, wherein said control member (7) further comprises a reset member (22) for automatically resetting said push rod (17).
5. A pneumatically driven injection device according to claim 4, wherein said return member (22) comprises a first spring (23) and a second spring (24), said first spring (23) being disposed around the outer periphery of said push rod (17) and the top of said piston (16), said second spring (24) being disposed around the outer periphery of said inner barrel (14) and the bottom of said outer barrel (13), said first spring (23) having a greater spring force than said second spring (24).
6. A pneumatically driven injection device as claimed in claim 3, wherein the top of said push rod (17) is provided with a pressing portion (25).
7. A pneumatically driven injection device according to any of claims 1 to 6, wherein said injection cavity (2) is of spherical, cubic, cuboid, cylindrical or polyhedral configuration.
8. A pneumatically driven injection device according to any of claims 1 to 6, further comprising a housing (26), wherein the pressure chamber (1), the injection chamber (2), the first injection member (4), the second injection member (5), the communicating tube (6) and the control member (7) are all disposed within the housing (26), and the housing (26) is provided with a first opening communicating with the dosing port (8) and a second opening for passing through the control member (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210248209.4A CN114632218B (en) | 2022-03-14 | 2022-03-14 | Pneumatic driving injection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210248209.4A CN114632218B (en) | 2022-03-14 | 2022-03-14 | Pneumatic driving injection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114632218A true CN114632218A (en) | 2022-06-17 |
| CN114632218B CN114632218B (en) | 2024-03-08 |
Family
ID=81948684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210248209.4A Active CN114632218B (en) | 2022-03-14 | 2022-03-14 | Pneumatic driving injection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114632218B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115154762A (en) * | 2022-07-27 | 2022-10-11 | 重庆倍加医疗器械有限公司 | Air pressure driven syringe |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4886499A (en) * | 1986-12-18 | 1989-12-12 | Hoffmann-La Roche Inc. | Portable injection appliance |
| DE19614337A1 (en) * | 1996-02-05 | 1997-08-07 | Lang Volker | Assembly for infusion therapy |
| US20040122366A1 (en) * | 2002-12-23 | 2004-06-24 | Farhad Kazemzadeh | Drug delivery apparatus |
| CN102245130A (en) * | 2008-10-10 | 2011-11-16 | 米卢克斯控股股份有限公司 | Infusion of drugs |
| CN102655896A (en) * | 2009-11-23 | 2012-09-05 | 斯帕克有限责任公司 | Device for dosing and adjusting the flow of a radiopaque agent to be used in performing an angiography |
| CN105979986A (en) * | 2013-10-18 | 2016-09-28 | 赛诺菲-安万特德国有限公司 | Injection device for delivery of a liquid medicament with medicament container displacement |
| CN106390237A (en) * | 2015-08-03 | 2017-02-15 | 贺小军 | Injector |
| WO2018043927A1 (en) * | 2016-08-31 | 2018-03-08 | 중소기업은행 | Electroosmotic pump |
| CN109363796A (en) * | 2018-10-30 | 2019-02-22 | 贵州牧林农业科技发展有限公司 | A kind of domestic animal continuous injector for domestic animals |
| CN110191732A (en) * | 2017-01-24 | 2019-08-30 | 赛诺菲-安万特德国有限公司 | Medicament delivery device |
| KR20190126520A (en) * | 2018-05-02 | 2019-11-12 | 주식회사 피테크 | Constant velocity infusion device for painless syringe and painless sylinge having the same |
| CN114052867A (en) * | 2021-11-16 | 2022-02-18 | 南通市妇幼保健院 | Artificial insemination transplanting device for reproductive medicine |
-
2022
- 2022-03-14 CN CN202210248209.4A patent/CN114632218B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4886499A (en) * | 1986-12-18 | 1989-12-12 | Hoffmann-La Roche Inc. | Portable injection appliance |
| DE19614337A1 (en) * | 1996-02-05 | 1997-08-07 | Lang Volker | Assembly for infusion therapy |
| US20040122366A1 (en) * | 2002-12-23 | 2004-06-24 | Farhad Kazemzadeh | Drug delivery apparatus |
| CN102245130A (en) * | 2008-10-10 | 2011-11-16 | 米卢克斯控股股份有限公司 | Infusion of drugs |
| CN102655896A (en) * | 2009-11-23 | 2012-09-05 | 斯帕克有限责任公司 | Device for dosing and adjusting the flow of a radiopaque agent to be used in performing an angiography |
| CN105979986A (en) * | 2013-10-18 | 2016-09-28 | 赛诺菲-安万特德国有限公司 | Injection device for delivery of a liquid medicament with medicament container displacement |
| CN106390237A (en) * | 2015-08-03 | 2017-02-15 | 贺小军 | Injector |
| WO2018043927A1 (en) * | 2016-08-31 | 2018-03-08 | 중소기업은행 | Electroosmotic pump |
| CN110191732A (en) * | 2017-01-24 | 2019-08-30 | 赛诺菲-安万特德国有限公司 | Medicament delivery device |
| KR20190126520A (en) * | 2018-05-02 | 2019-11-12 | 주식회사 피테크 | Constant velocity infusion device for painless syringe and painless sylinge having the same |
| CN109363796A (en) * | 2018-10-30 | 2019-02-22 | 贵州牧林农业科技发展有限公司 | A kind of domestic animal continuous injector for domestic animals |
| CN114052867A (en) * | 2021-11-16 | 2022-02-18 | 南通市妇幼保健院 | Artificial insemination transplanting device for reproductive medicine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115154762A (en) * | 2022-07-27 | 2022-10-11 | 重庆倍加医疗器械有限公司 | Air pressure driven syringe |
| CN115154762B (en) * | 2022-07-27 | 2024-03-08 | 重庆倍加医疗器械有限公司 | Pneumatic driving injector |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114632218B (en) | 2024-03-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4718893A (en) | Pressure regulated implantable infusion pump | |
| US4684368A (en) | Inverted pump | |
| EP2698178B1 (en) | Pump engine with metering system for dispensing liquid medication | |
| JP4970730B2 (en) | Dosing device | |
| US3620650A (en) | Gas-disabled liquid-pumping apparatus | |
| JP2593047B2 (en) | Measuring device for implantable feeding devices | |
| US3335724A (en) | Remote control, repeating, variable stroke hypodermic syringe device | |
| US20030100864A1 (en) | Delivery device and cartridge therefore | |
| US6629954B1 (en) | Drug delivery pump with isolated hydraulic metering | |
| JPS6244946B2 (en) | ||
| JPS59111765A (en) | Injection pump apparatus | |
| GB2028275A (en) | Implantable infusion apparatus and method | |
| US20150025461A1 (en) | Microfluidic Delivery Device | |
| EP2403565B1 (en) | Pressurized reservoir system for storing and dispensing liquids | |
| CN114632218A (en) | Air pressure driving injection device | |
| CN106390237B (en) | Syringe with a needle | |
| US11135354B2 (en) | Fluid delivery pump | |
| US4661097A (en) | Method for clearing a gas bubble from a positive displacement pump contained within a fluid dispensing system | |
| CN205297799U (en) | Low -pressure measurement fuel pump | |
| KR101347640B1 (en) | Cartridge-way infusion pump | |
| CN109152880A (en) | The adjustable liquid medicine injection apparatus of internal pressure | |
| US20200405954A1 (en) | Status Indicator of a Drug Delivery System | |
| WO2022134346A1 (en) | Medium infusion structure, medium infusion method, micro-dose secretion pump, and insulin pump | |
| EP1450882B1 (en) | Portable delivery device, pressurised by a pumped liquid, and cartridge therefore | |
| GB2195149A (en) | Tubular diaphragm pumps |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |