CN108159534A - Injector for medical purpose - Google Patents
Injector for medical purpose Download PDFInfo
- Publication number
- CN108159534A CN108159534A CN201810147011.0A CN201810147011A CN108159534A CN 108159534 A CN108159534 A CN 108159534A CN 201810147011 A CN201810147011 A CN 201810147011A CN 108159534 A CN108159534 A CN 108159534A
- Authority
- CN
- China
- Prior art keywords
- piston head
- sleeve
- empty slot
- ventilated membrane
- air
- 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.)
- Pending
Links
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
- A61M5/178—Syringes
-
- 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
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
- A61M5/31511—Piston or piston-rod constructions, e.g. connection of piston with piston-rod
-
- 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
- A61M5/36—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 with means for eliminating or preventing injection or infusion of air into body
- A61M5/38—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 with means for eliminating or preventing injection or infusion of air into body using hydrophilic or hydrophobic filters
- A61M5/385—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 with means for eliminating or preventing injection or infusion of air into body using hydrophilic or hydrophobic filters using hydrophobic filters
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)
- Emergency Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The present invention relates to the field of medical instrument technology, and in particular to injector for medical purpose；It includes piston rod, sleeve, piston head；Piston rod is fixedly arranged at the front end with piston head；Piston head is located at the inside of sleeve；The front end of the piston head is taper；Towards cutting with cylindrical empty slot in the middle part of piston head at the tapered wall of piston head；The opening of cylindrical empty slot is equipped with ventilated membrane；The both sides of ventilated membrane bond respectively with watertight at the inner wall of the front end of cylindrical empty slot；The ventilated membrane is Ge Er ventilated membranes；The taper inclined wall smooth connection of ventilated membrane and piston head；Injector for medical purpose of the present invention, it can be used for storing air using the piston head design after fluting, cylindrical empty slot；It is designed using Ge Er ventilated membranes, and Ge Er ventilated membranes can only prevent the liquid in syringe from entering in cylindrical empty slot by air；The air that its air in syringe is avoided that when not exclusively excluding in syringe is pushed in human body；It is also avoided that drug causes largely to waste.
Description
Technical field
The present invention relates to the field of medical instrument technology, and in particular to injector for medical purpose.
Background technology
The appearance of syringe is the once epoch-making revolution of medical instruments field, in extract either inject gas or
This process of liquid is called injection.Syringe is made of the foraminate syringe of front end band and matching piston core pin,
For by a small amount of liquid or its be injected into region that other methods can not approach or extracted out from those places, extracted in core bar
When liquid either gas from syringe front end aperture suck when core bar be pushed by liquid or gas extrusion.Work as syringe
During for giving human injection's drug, need to discharge air after syringe sucks liquid drug, if injecting air into blood
Heart arrest may be caused in pipe or even caused casualties.And the outlet of syringe is smaller, many times in order to will be internal
Air squeeze out and need to push many liquid medicine, it is also possible to release many drugs and air cannot still be squeezed out completely.
Invention content
In view of the defects and deficiencies of the prior art, the present invention intends to provide a kind of simple in structure, reasonable design makes
With convenient injector for medical purpose, it includes piston rod, sleeve, piston head；Piston rod is fixedly arranged at the front end with piston head；Piston head position
In the inside of sleeve；The front end of the piston head is taper；It further includes ventilated membrane；Towards piston head at the tapered wall of piston head
Middle part cut with cylindrical empty slot；The opening of cylindrical empty slot is equipped with ventilated membrane；The both sides of ventilated membrane are respectively and cylindrical empty
Watertight bonds at the inner wall of the front end of slot；The ventilated membrane is Ge Er ventilated membranes；The taper inclined wall of ventilated membrane and piston head is put down
Sliding docking.
With the above structure, the present invention has the beneficial effect that：Injector for medical purpose of the present invention, after it is using fluting
Piston head designs, and cylindrical empty slot can be used for storing air；It is designed using Ge Er ventilated membranes, and Ge Er ventilated membranes can only pass through sky
Gas prevents the liquid in syringe from entering in cylindrical empty slot；Its air in syringe is avoided that note when not exclusively excluding
Air in emitter is pushed in human body；It is also avoided that drug causes largely to waste.
Description of the drawings
Attached drawing described herein is to be used to provide further understanding of the present invention, and forms the part of the application, but
It does not constitute improper limitations of the present invention, in the accompanying drawings：
Fig. 1 is schematic structural view of the invention；
Right view when Fig. 2 is the good working condition of the piston head in Fig. 1.
Reference sign：
1- piston rods, 2- sleeves, 3- piston heads, 3-1 cylinders empty slot, 3-2 ventilated membranes.
Specific embodiment
Come that the present invention will be described in detail below in conjunction with attached drawing and specific embodiment, illustrative examples therein and say
It is bright to be only used for explaining the present invention, but not as a limitation of the invention.
As shown in Figs. 1-2, the injector for medical purpose described in present embodiment, it includes piston rod 1, sleeve 2, piston head
3；Piston rod 1 is fixedly arranged at the front end with piston head 3；Piston head 3 is located at the inside of sleeve 2；The front end of the piston head 3 is taper；
It is characterized in that：It further includes ventilated membrane 3-2；At the tapered wall of the piston head 3 cylinder is cut with towards the middle part of piston head 3
Empty slot 3-1；The opening of cylindrical empty slot 3-1 is equipped with ventilated membrane 3-2；The both sides of ventilated membrane 3-2 respectively with cylindrical empty slot 3-1
Front end inner wall at watertight bonding；The ventilated membrane 3-2 is Ge Er ventilated membranes；The taper of ventilated membrane 3-2 and piston head 3 tilts
Wall smooth connection.
Further：The sleeve 2 is transparent plastic sleeve, and transparent sleeve promotes convenient for the drug in monitoring sleeve
State；The sleeve of plastics is of low cost.
Further：The outer wall of the sleeve 2 is equipped with graduation mark, and the design of graduation mark is convenient for monitoring drug propulsion
Amount.
Injector for medical purpose of the present invention, its operation principle are：It is used when using syringe with ordinary syringe
It is identical, install syringe needle, inhalation of in the front end of sleeve 2.Syringe is erected after inhalation of, makes syringe needle upward, sleeve 2
Interior drug is under, and the air of sleeve 2 is upper, and air is located at the exit of sleeve, pushes piston rod 1, and piston head 3 is transported upwards
Outside dynamic most of bubble discharge sleeve 2 by sleeve 2, treat that drug is begun at the top of syringe needle to be come out in i.e. provable syringe needle
Drug is occupied, the inside of sleeve 2 many times can also remain the air of smaller particle at this time, can not be arranged against piston rod 1 is pushed
Go out.And a small amount of air particles that can not arranged have no effect on the use of injector for medical purpose of the present invention, are at this time inverted syringe, syringe needle
It is pierced into skin, normal injection；Remaining a small amount of air bubble can be squeezed by drug to the lower surface of piston head 3 after inversion, and live
The lower surface of chock plug 3 is tip taper, and bubble will be deposited at the root ventilated membrane 3-2 of taper, due to Ge Er ventilated membranes only
Allow passing through for air, circle is entered with reference to the pressure generated in sleeve, air permeable ventilated membrane 3-2 when drug is injected
In cylindricality empty slot 3-1, when piston head 3 is pushed to 2 bottom of sleeve, going out for sleeve 2 is blocked at the bottom tip of piston head 3
Mouthful, air is still stayed in cylindrical empty slot 3-1.
Injector for medical purpose of the present invention, it can be used for storing using the piston head design after fluting, cylindrical empty slot
Air；It is designed using Ge Er ventilated membranes, and Ge Er ventilated membranes can only prevent the liquid in syringe from entering cylinder by air
In empty slot；The air that its air in syringe is avoided that when not exclusively excluding in syringe is pushed in human body；It is also
It is avoided that drug causes largely to waste.
The above is only the better embodiment of the present invention, therefore all constructions according to described in present patent application range,
The equivalent change or modification that feature and principle are done, is included in the range of present patent application.
Claims (3)
1. injector for medical purpose, it includes piston rod (1), sleeve (2), piston head (3)；Piston rod (1) is fixedly arranged at the front end with piston
Head (3)；Piston head (3) is positioned at the inside of sleeve (2)；The front end of the piston head (3) is taper；It is characterized in that：It is also wrapped
Include ventilated membrane (3-2)；Towards cutting with cylindrical empty slot (3-1) in the middle part of piston head (3) at the tapered wall of the piston head (3)；
The opening of cylindrical empty slot (3-1) is equipped with ventilated membrane (3-2)；The both sides of ventilated membrane (3-2) respectively with cylindrical empty slot (3-1)
Front end inner wall at watertight bonding；The ventilated membrane (3-2) is Ge Er ventilated membranes；The cone of ventilated membrane (3-2) and piston head (3)
Shape inclined wall smooth connection.
2. injector for medical purpose according to claim 1, it is characterised in that：The sleeve (2) is transparent plastic sleeve.
3. injector for medical purpose according to claim 1, it is characterised in that：The outer wall of the sleeve (2) is equipped with graduation mark.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810147011.0A CN108159534A (en) | 2018-02-12 | 2018-02-12 | Injector for medical purpose |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810147011.0A CN108159534A (en) | 2018-02-12 | 2018-02-12 | Injector for medical purpose |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108159534A true CN108159534A (en) | 2018-06-15 |
Family
ID=62513868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810147011.0A Pending CN108159534A (en) | 2018-02-12 | 2018-02-12 | Injector for medical purpose |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108159534A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108888835A (en) * | 2018-09-17 | 2018-11-27 | 上海市东方医院 | Safety injector |
| CN116168595A (en) * | 2023-04-21 | 2023-05-26 | 江西明天高科技股份有限公司 | Injector simulator |
-
2018
- 2018-02-12 CN CN201810147011.0A patent/CN108159534A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108888835A (en) * | 2018-09-17 | 2018-11-27 | 上海市东方医院 | Safety injector |
| CN116168595A (en) * | 2023-04-21 | 2023-05-26 | 江西明天高科技股份有限公司 | Injector simulator |
| CN116168595B (en) * | 2023-04-21 | 2023-10-10 | 江西明天高科技股份有限公司 | Injector simulator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180615 |
|
| WD01 | Invention patent application deemed withdrawn after publication |