CN108888835A - Safety injector - Google Patents
Safety injector Download PDFInfo
- Publication number
- CN108888835A CN108888835A CN201811080882.1A CN201811080882A CN108888835A CN 108888835 A CN108888835 A CN 108888835A CN 201811080882 A CN201811080882 A CN 201811080882A CN 108888835 A CN108888835 A CN 108888835A
- Authority
- CN
- China
- Prior art keywords
- valve
- core bar
- piston
- injection
- fixed
- 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
- 238000002347 injection Methods 0.000 claims abstract description 11
- 239000007924 injection Substances 0.000 claims abstract description 11
- 230000008602 contraction Effects 0.000 claims abstract description 4
- 230000000903 blocking effect Effects 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims 1
- 238000003032 molecular docking Methods 0.000 claims 1
- 208000029078 coronary artery disease Diseases 0.000 abstract description 5
- 239000003814 drug Substances 0.000 abstract description 5
- 238000002586 coronary angiography Methods 0.000 abstract description 3
- 238000007887 coronary angioplasty Methods 0.000 abstract description 3
- 210000004351 coronary vessel Anatomy 0.000 abstract description 3
- 239000000243 solution Substances 0.000 abstract 1
- 210000004204 blood vessel Anatomy 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000002872 contrast media Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000001356 surgical procedure Methods 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
- A61M5/007—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 for contrast media
-
- 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
Abstract
A kind of safety injector, is related to technical field of medical equipment, and the solution is to avoid bubble from entering coronary artery.The syringe includes injection-tube, and the piston being mounted in injection-tube；The left end nozzle radial contraction of the injection-tube forms injection port；Core bar is fixed on the piston, the core bar extends to outside injection-tube to the right；It is characterized in that：The left side of the piston is recessed to the right.Syringe provided by the invention, the injection medicament suitable for the operation such as coronary angiography, coronary heart disease following percutaneous transluminal coronary angioplasty.
Description
Technical field
The present invention relates to medical devices technologies, more particularly to a kind of technology of safety injector.
Background technique
Coronary heart disease is on the rise to the harm of human health, and disease incidence is in continue ascendant trend；Coronarography is
The goldstandard of diagnosis of coronary heart disease, coronary angioplasty are the main means for treating coronary heart disease.It is shaped in coronary angiography and coronary artery
It is essential to need with syringe bolus administration of contrast agent during art.
In the course of surgery, due to being vented there is pumpback, it inevitably will appear bubble in syringe, if bubble
Following contrast agent to be injected into coronary artery can then cause aeroembolism to cause catastrophic effect, and the method for avoiding aeroembolism being commonly used is
Dipping type injection method removes syringe when bubble is more and is vented again.However larger bubble, gas may be still injected when pushing note
The probability of happening of bolt is higher, even notices that operation is still difficult to avoid that.Injection medicament is similarly deposited in other clinical operations
When bubble can enter blood vessel the problem of.
Summary of the invention
For above-mentioned defect existing in the prior art, technical problem to be solved by the invention is to provide one kind to be avoided that
Bubble enters the safety injector of blood vessel.
In order to solve the above-mentioned technical problem, a kind of safety injector provided by the present invention, including injection-tube, and be mounted on
Piston in injection-tube；The left end nozzle radial contraction of the injection-tube forms injection port；It is fixed with core bar on the piston,
The core bar extends to outside injection-tube to the right；It is characterized in that：The left side of the piston is recessed to the right.
Further, it is formed with the piston exhaust ports of left and right perforation on the piston, left and right is formed in the core bar and is passed through
Logical core bar air guide channel, the left end of core bar air guide channel are docked with piston exhaust ports.
Further, the left side of the piston is the tapered surface being recessed to the right, and the left hole mouth of piston exhaust ports, which is located at, lives
Fill in the cone tip part of left side.
Further, the core bar is equipped with the gas bleeder valve for controlling core bar air guide channel on-off.
Further, the gas bleeder valve includes valve casing, valve rod, and the valve casing is fixed on core bar, the air inlet of valve casing with
The right end of core bar air guide channel docks, and the gas outlet of valve casing is opened to outside, and station and open work can blocked by being equipped in valve casing
The spool to reciprocatingly slide between position, the interior return spring being equipped with for driving spool towards blocking station sliding of valve casing, valve rod
One end is affixed with spool, and the other end of valve rod extends to outside valve casing；
When the spool slides into blocking station, the air inlet of valve casing and gas outlet are blocked by spool；Spool slides into open work
When position, the air inlet and gas outlet mutual conduction of valve casing.
Further, the gas bleeder valve includes valve plate, clip；The valve plate offers valve opening, and valve plate is fixed on core bar,
And valve opening is docked with the right end of core bar air guide channel；The clip is made of fixed handle, movable handle, and fixed handle therein is fixed
On valve plate, movable handle is hinged with fixed handle, and one end of movable handle is fixed with port lid, and the port lid covers valve opening, and can be with
Movable handle pivots away from valve opening, and fixed handle, which is equipped with, covers the torsional spring of valve opening for driving the hole on movable handle to cover tightly.
Further, the outer wall right part of the injection-tube is fixed with the neck of hook.
Safety injector provided by the invention, using depressed piston structure, thus reserved for residual air in injection-tube
Space still has sufficient space to guarantee that bubble does not enter blood vessel, to reduce aeroembolism probability of happening, protects even if syringe is injected on earth
Demonstrate,prove operation safety；And when bubble is more, injection inner air tube can be discharged after opening gas bleeder valve, without dismantling piston i.e.
Injection inner air tube can be emptied.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the safety injector of first embodiment of the invention；
Fig. 2 is the structural schematic diagram of the gas bleeder valve in the safety injector of first embodiment of the invention；
Fig. 3 is the structural schematic diagram of the gas bleeder valve in the safety injector of second embodiment of the invention.
Specific embodiment
The embodiment of the present invention is described in further detail below in conjunction with Detailed description of the invention, but the present embodiment is not used to limit
The system present invention, all that protection scope of the present invention should all be included in using similar structure and its similar variation of the invention, present invention
In pause mark indicate the relationship of sum, the English alphabet in the present invention is case sensitive.
As shown in Figure 1, a kind of safety injector provided by first embodiment of the invention, including injection-tube 1, and be mounted on
Piston 2 in injection-tube；
The scale for indicating tube fluid capacity is printed on the injection-tube 1, the outer wall right part of injection-tube is fixed with the neck of hook
4, the left end nozzle radial contraction of injection-tube forms injection port 11；
Core bar 3 is fixed on the piston 2, the core bar 3 extends to outside injection-tube to the right, and the right end of core bar is fixed with handle 5；
The left side of the piston 2 is recessed to the right, and the piston exhaust ports 21 of left and right perforation, the core are formed on piston
The core bar air guide channel 31 of left and right perforation is formed in bar 3, the left end of core bar air guide channel 31 is docked with piston exhaust ports 21, core
Bar 3 is equipped with the gas bleeder valve 6 for controlling 31 on-off of core bar air guide channel.
In first embodiment of the invention, the left side of the piston 2 is the tapered surface being recessed to the right, piston exhaust ports 21
Left hole mouth is located at the cone tip part of piston left side, and in other embodiments of the present invention, the left side of piston is also possible to be recessed to the right
The other shapes of face such as arcwall face, or the trapezoidal faces that are recessed to the right.
As shown in Fig. 2, the gas bleeder valve includes valve casing 61, valve rod 63 in first embodiment of the invention, the valve casing 61 is solid
It is scheduled on core bar 3, the air inlet of valve casing 61 is docked with the right end of core bar air guide channel 31, and the gas outlet of valve casing 61 is opened to outside
It puts, the spool 62 to reciprocatingly slide between station and open station can blocked by being equipped in valve casing 61, be equipped in valve casing for driving
Spool 62 is towards the return spring 64 for blocking station sliding, and one end of valve rod 63 and spool 62 are affixed, and the other end of valve rod 63 is stretched
To valve casing；
When the spool 62 slides into blocking station, the air inlet of valve casing and gas outlet are blocked by spool；Spool 62 slides into out
When putting station, the air inlet and gas outlet mutual conduction of valve casing.
The difference of second embodiment of the invention and first embodiment is：Gas bleeder valve and first in second embodiment are implemented
Gas bleeder valve in example is different；
In second embodiment of the invention, the gas bleeder valve includes valve plate 71, clip；The valve plate 71 offers valve opening 76, valve plate
71 are fixed on core bar, and valve opening 76 is docked with the right end of core bar air guide channel；
The clip is made of fixed handle 74, movable handle 73, and fixed handle 74 therein is fixed on valve plate 71, movable handle 73 and solid
It is hinged to determine handle 74, one end of movable handle 73 is fixed with port lid 72, and the port lid 72 covers valve opening 76, and can be with movable handle 73
Valve opening 76 is pivoted away from, fixed handle 74 is equipped with for driving the port lid 72 on movable handle 73 tightly to cover the torsional spring 75 of valve opening 76.
Various embodiments of the present invention are suitable for the operation that coronary angiography, coronary heart disease following percutaneous transluminal coronary angioplasty etc. inject medicament to blood vessel, to blood
When pipe injects medicament, operator catches on the neck of hook 4 with finger, and presses pressuring press handle 5 to the left, to push core bar 3, piston 2 to the left
It is mobile, so that medicament is flowed out from injection port 11；
Since the left side of piston 2 is recessed to the right, still there is sufficient space to guarantee that gas does not enter blood vessel even if piston is injected on earth,
And injection inner air tube can be pooled to the recessed portion space of piston left side, and open gas bleeder valve and can will inject inner air tube
Discharge.
Claims (7)
1. a kind of safety injector, including injection-tube, and the piston being mounted in injection-tube；The left end nozzle diameter of the injection-tube
To contraction, injection port is formed；Core bar is fixed on the piston, the core bar extends to outside injection-tube to the right；It is characterized in that：
The left side of the piston is recessed to the right.
2. safety injector according to claim 1, it is characterised in that：The piston of left and right perforation is formed on the piston
Gas vent is formed with the core bar air guide channel of left and right perforation, the left end of core bar air guide channel and piston exhaust ports in the core bar
Docking.
3. safety injector according to claim 2, it is characterised in that：The left side of the piston is the cone being recessed to the right
Shape face, the left hole mouth of piston exhaust ports are located at the cone tip part of piston left side.
4. safety injector according to claim 2, it is characterised in that：The core bar is equipped with for controlling core bar air guide
The gas bleeder valve of channel on-off.
5. safety injector according to claim 4, it is characterised in that：The gas bleeder valve includes valve casing, valve rod, the valve
Shell is fixed on core bar, and the air inlet of valve casing is docked with the right end of core bar air guide channel, and the gas outlet of valve casing is opened to outside, valve
The spool to reciprocatingly slide between station and open station can blocked by being equipped in shell, be equipped in valve casing for driving spool towards resistance
The return spring of disconnected station sliding, one end of valve rod and spool are affixed, and the other end of valve rod extends to outside valve casing；
When the spool slides into blocking station, the air inlet of valve casing and gas outlet are blocked by spool；Spool slides into open work
When position, the air inlet and gas outlet mutual conduction of valve casing.
6. safety injector according to claim 4, it is characterised in that：The gas bleeder valve includes valve plate, clip；The valve
Plate offers valve opening, and valve plate is fixed on core bar, and valve opening is docked with the right end of core bar air guide channel；The clip is by fixing
Handle, movable handle composition, fixed handle therein are fixed on valve plate, and movable handle is hinged with fixed handle, and one end of movable handle is fixed with
Port lid, the port lid covers valve opening, and can be equipped with the valve opening that pivots away from of movable handle, fixed handle for driving movable handle
On hole cover tightly the torsional spring for covering valve opening.
7. safety injector according to claim 1, it is characterised in that：The outer wall right part of the injection-tube is fixed with hook
Handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811080882.1A CN108888835A (en) | 2018-09-17 | 2018-09-17 | Safety injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811080882.1A CN108888835A (en) | 2018-09-17 | 2018-09-17 | Safety injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108888835A true CN108888835A (en) | 2018-11-27 |
Family
ID=64359483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811080882.1A Pending CN108888835A (en) | 2018-09-17 | 2018-09-17 | Safety injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108888835A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111939385A (en) * | 2020-08-18 | 2020-11-17 | 深圳市立心科学有限公司 | Syringe for viscous and incompressible fluids |
| WO2023187115A1 (en) * | 2022-03-30 | 2023-10-05 | Guerbet | Medical injection device with gas evacuation |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202279340U (en) * | 2011-10-31 | 2012-06-20 | 山东省文登整骨医院 | Anti-pollution sharp container |
| CN202643304U (en) * | 2012-05-15 | 2013-01-02 | 武汉诺尔曼科技有限公司 | Glue filling tool |
| CN204246526U (en) * | 2014-11-18 | 2015-04-08 | 四川大学华西医院 | A kind of Sputum cup |
| CN105498046A (en) * | 2016-01-13 | 2016-04-20 | 北京步腾医学科技有限公司 | Pneumatic needleless injector |
| CN106178194A (en) * | 2016-08-10 | 2016-12-07 | 赵泓彬 | Health care syringe |
| CN207041707U (en) * | 2017-09-12 | 2018-02-27 | 南阳医学高等专科学校第一附属医院 | A kind of syringe |
| CN108159534A (en) * | 2018-02-12 | 2018-06-15 | 王博 | Injector for medical purpose |
| CN108421132A (en) * | 2018-03-11 | 2018-08-21 | 杨博 | Medication reconstitution device |
| CN209253831U (en) * | 2018-09-17 | 2019-08-16 | 上海市东方医院 | Safety injector |
-
2018
- 2018-09-17 CN CN201811080882.1A patent/CN108888835A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202279340U (en) * | 2011-10-31 | 2012-06-20 | 山东省文登整骨医院 | Anti-pollution sharp container |
| CN202643304U (en) * | 2012-05-15 | 2013-01-02 | 武汉诺尔曼科技有限公司 | Glue filling tool |
| CN204246526U (en) * | 2014-11-18 | 2015-04-08 | 四川大学华西医院 | A kind of Sputum cup |
| CN105498046A (en) * | 2016-01-13 | 2016-04-20 | 北京步腾医学科技有限公司 | Pneumatic needleless injector |
| CN106178194A (en) * | 2016-08-10 | 2016-12-07 | 赵泓彬 | Health care syringe |
| CN207041707U (en) * | 2017-09-12 | 2018-02-27 | 南阳医学高等专科学校第一附属医院 | A kind of syringe |
| CN108159534A (en) * | 2018-02-12 | 2018-06-15 | 王博 | Injector for medical purpose |
| CN108421132A (en) * | 2018-03-11 | 2018-08-21 | 杨博 | Medication reconstitution device |
| CN209253831U (en) * | 2018-09-17 | 2019-08-16 | 上海市东方医院 | Safety injector |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111939385A (en) * | 2020-08-18 | 2020-11-17 | 深圳市立心科学有限公司 | Syringe for viscous and incompressible fluids |
| CN111939385B (en) * | 2020-08-18 | 2021-07-30 | 深圳市立心科学有限公司 | Syringe for viscous and incompressible fluids |
| WO2023187115A1 (en) * | 2022-03-30 | 2023-10-05 | Guerbet | Medical injection device with gas evacuation |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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