CN107929885A - A kind of injection of insulin syringe needle of closed protective - Google Patents
A kind of injection of insulin syringe needle of closed protective Download PDFInfo
- Publication number
- CN107929885A CN107929885A CN201711321606.5A CN201711321606A CN107929885A CN 107929885 A CN107929885 A CN 107929885A CN 201711321606 A CN201711321606 A CN 201711321606A CN 107929885 A CN107929885 A CN 107929885A
- Authority
- CN
- China
- Prior art keywords
- oversheath
- rear portion
- closure plug
- internal
- cavity
- 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
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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
- A61M5/31—Details
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/3202—Devices for protection of the needle before use, e.g. caps
-
- 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
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
- A61M5/321—Means for protection against accidental injuries by used needles
- A61M5/3243—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel
-
- 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
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
- A61M5/321—Means for protection against accidental injuries by used needles
- A61M5/3243—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel
- A61M5/3257—Semi-automatic sleeve extension, i.e. in which triggering of the sleeve extension requires a deliberate action by the user, e.g. manual release of spring-biased extension means
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- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Environmental & Geological Engineering (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention discloses a kind of injection of insulin syringe needle of closed protective, it is characterised in that：Including front end oversheath（1）With rear portion oversheath（2）, front end oversheath（1）Front end closing, front end oversheath（1）Open rearward end, front end oversheath（1）Rear end and rear portion oversheath（2）Front end connection, rear portion oversheath（2）Open rearward end；The rear portion oversheath（2）Inside it is provided with rear portion closure plug（3）, rear portion closure plug（3）One end be arranged at rear portion oversheath（2）It is interior, rear portion closure plug（3）The other end is arranged at rear portion oversheath（2）Outside；The front end oversheath（1）Inside it is provided with piercing needle（4）；The front end oversheath（1）Front end outside be socketed with slip sheath（5）, slide sheath（5）With front end oversheath（1）It is slidably connected；The piercing needle（4）Front end be puncture tip.In the technical solution of the application, blood is blocked to obtain clearly surgical field of view by bloodstream blocking stent, and it is simple in structure, and barrier effect is good.
Description
Technical field
The present invention relates to a kind of injection of insulin syringe needle of closed protective, belong to medical instruments field.
Background technology
Many people suffer from diabetes.Because their diabetes, many people in them have to one day inject some
It is secondary, typically on the feed after, therefore no matter where, they are required for carrying with insulin syringe.Currently there is many
The design of different insulin syringes with more or less complexity, can set dosage using these syringes and (that is, will
The quantity of injection units), and these syringes accommodate the insulin of some dosages.In the prior art, insulin syringe
It is separated with injection needle, when needing to carry out injection of insulin, injection needle is installed on syringe and is noted
Penetrate, injection needle is removed again after the completion of injection and is thrown aside, syringe is placed in case next time uses.Existing injection needle is only
Wrapped up by outer packing, after outer packing is removed, injection needle can be exposed in air for some time.It is empty indoors
When injection of insulin is carried out in the case of makings amount is preferable, the injection needle short time, which is exposed in air, will not cause syringe needle serious
Pollution.But when going out outdoors, if to carry out injection of insulin, injection needle will be exposed to open air after packaging is removed
Complex condition, more serious pollution can be caused to syringe needle.
The content of the invention
For it is existing in the prior art " outdoors go out when, if to carry out injection of insulin, injection needle removing bag
Outdoor complex condition will be exposed to after dress, more serious pollution can be caused to syringe needle " deficiency, there is provided one kind closing
The injection of insulin syringe needle of protection.
In order to solve the above technical problems, the present invention adopts the technical scheme that, a kind of insulin injection syringe of closed protective
Head, including front end oversheath and rear portion oversheath, the front end closing of front end oversheath, the open rearward end of front end oversheath, front end
The rear end of oversheath is connected with the front end of rear portion oversheath, the open rearward end of rear portion oversheath；Set in the rear portion oversheath
There is rear portion closure plug, one end of rear portion closure plug is arranged in the oversheath of rear portion, and the closure plug other end in rear portion is arranged at outside rear portion
Outside sheath；Piercing needle is provided with the front end oversheath；Slip sheath is socketed with outside the front end of the front end oversheath,
Sheath is slided to be slidably connected with front end oversheath；The front end of the piercing needle is puncture tip, and the rear end of piercing needle connects
There is slip cavity, piercing needle is connected with sliding cavity, is slided cavity and is arranged in the oversheath of front end；The rear portion closure plug is set
Internal connection sleeve is provided with the end face of the one end being placed in the oversheath of rear portion, slides and inside is provided with the rear end face of cavity
Through hole is connected, inside connection sleeve connects through hole with inside and is equipped with；Through hole is provided with the front end face for sliding sheath
One, diaphragm seal one is provided with through hole one；Through hole two is provided with the front end face of the front end oversheath, is provided with through hole two
Diaphragm seal two；Diaphragm seal three is fitted with the rear end face of the rear portion oversheath, in the rear end of front end oversheath is internally provided with
Portion's diaphragm seal.
In the technical solution of the application, front end oversheath, rear portion oversheath and rear portion closure plug surround the sky of a closing
Between, piercing needle be arranged at this closing space in, after the outer packing of injection needle is removed, by front end oversheath,
Rear portion oversheath and rear portion closure plug protect piercing needle with air contact, not avoid piercing needle and be subject in air
Pollution.
The injection needle of the application when in use, rear portion closure plug is installed on syringe, in the prior art insulin
The end connecting pin of syringe is normal structure, and the rear aperture shape of the rear portion closure plug of the application can be fabricated to and pancreas
The normal structure that the end connecting pin of island element syringe coordinates.After the injection needle of the application is installed on syringe, lead to
Cross and move the position that rear portion envelope is blocked in the oversheath of rear portion so that connection sleeve in inside internally connects the movement of through hole direction simultaneously
In the internal connection through hole of insertion, after being connected inside inside connection sleeve insertion in through hole, rear portion closure plug continues to move to simultaneously
Slip cavity and piercing needle is promoted to be moved in the oversheath of front end by inside connection sleeve so that piercing needle punctures sealing
Piece two and tip, which stretch in, to be slided in sheath.In order to prevent piercing needle with before patient contact be exposed to air in,
Add slip sheath in the technical solution of the application, when use will slide front end face alignment patient's epidermal injection portion of sheath
Position, forces on front end oversheath and rear portion oversheath so that with sliding sheath relative motion occurs for front end oversheath, is sliding
In sheath moving process, piercing needle directly punctures patient's epidermis after puncturing diaphragm seal one, avoids piercing needle and is connect with air
Touch.
When closure plug is installed on syringe at rear portion, diaphragm seal three is removed if desired, then rear portion closure is filled in interior
Portion can be exposed in air for some time, and in order to avoid this case, the diaphragm seal three of the application can use aluminium foil paper wood
Matter, when rear portion closure plug sleeve is connected to the end of syringe, it is not necessary to remove diaphragm seal three, only need to pass through injection in socket
By three bursting of diaphragm seal, the inside that can reduce rear portion closure plug is exposed to time in air for the end of device.
Optimization, the injection needle of above-mentioned closed protective, be provided with the front end oversheath it is some be arranged in parallel it is interior
Portion's guide pin, piercing needle through internal guide pin and with internal guide pin sliding contact.
When piercing needle slides, internal guide pin plays the role of being oriented to piercing needle, keeps piercing needle with before
Hold the concentricity of oversheath.
Optimization, the injection needle of above-mentioned closed protective, described slide is set between cavity and the inner wall of front end oversheath
There is the fixed component of position of the fixed slip cavity in the oversheath of front end, rear portion closure plug is arranged at one in the oversheath of rear portion
Internal slip joint casing is provided with the end face at end；Rear portion envelope is blocked in the oversheath of rear portion after movement, and internal slip joint casing will be solid
Determine component with slip cavity to isolate and be socketed on cavity is slided in internal slip joint casing；In the internal connection sleeve is arranged at
In portion's slip joint casing.
Cavity and piercing needle are slided in order to prevent and is moved when unused, are provided with the technical solution of the application
Fixed component is with the fixed position for sliding cavity and piercing needle in the oversheath of front end.When rear portion, envelope is blocked in rear portion oversheath
After interior movement, internal slip joint casing will slide cavity after can inner sealing piece be punctured and be socketed on internal slip joint casing, will slide
Cavity is isolated with fixed component to be disengaged so that sliding cavity with fixed component.
Optimization, the injection needle of above-mentioned closed protective, if the fixed component includes dry elasticity bending bar, elastic bending
Bar is arranged at the both sides for sliding cavity, and one end of elastic bending bar is fixedly connected with the inner wall of front end oversheath, elastic bending bar
The other end be provided with the fixed chuck of triangle, slide and card slot be provided with the outer wall of cavity, fixed chuck is connected in card slot
It is interior.
Cavity and piercing needle are slided in order to prevent and is moved when unused, are provided with the technical solution of the application
Fixed component is with the fixed position for sliding cavity and piercing needle in the oversheath of front end.When rear portion, envelope is blocked in rear portion oversheath
After interior movement, internal slip joint casing can puncture inner sealing piece, the end of internal slip joint casing contacted with fixed chuck so that
Fixed chuck departs from card slot, then slides cavity and is socketed in internal slip joint casing.
Optimization, the injection needle of above-mentioned closed protective, with slide the adjacent inside guide pin of cavity with slide cavity it
Between be provided with tension spring, the both ends of tension spring respectively with internal guide pin, slide cavity and be fixedly connected.
After fixed chuck departs from card slot, the pulling force of tension spring to slide cavity internally guide pin direction movement.
Optimization, the injection needle of above-mentioned closed protective, is set flexible between the slip sheath and rear portion oversheath
Supporting rod, the both ends of elastic supporting bar are fixedly connected with slip sheath, rear portion oversheath respectively.
Sheath maloperation is slided in order to prevent, elastic supporting bar is added in the technical solution of the application, and shield is slided in support
Position between set and rear portion oversheath.When in use, deformed by the elastic supporting bar that exerts a force.After the completion of injection,
Elastic supporting bar occurs elasticity and recovers to put so that sliding sheath and setting back, and such piercing needle is wrapped up by slip sheath again,
Prevent piercing needle exposure from accidentally injuring other people.
Optimization, the injection needle of above-mentioned closed protective, the elastic supporting bar is the stretchy nylon bar of arc.
Optimization, the injection needle of above-mentioned closed protective, the rear portion blocks to be provided with the outer surface side wall of plug
External screw thread, internal thread, rear portion closure plug and rear portion oversheath thread fitting are provided with the inner surface of rear portion oversheath.
Rear portion closure plug and rear portion oversheath thread fitting, when so there was only portion's oversheath after rotation, rear portion closure plug
It can just be relatively moved with rear portion oversheath, prevent the generation of maloperation.
Optimization, the injection needle of above-mentioned closed protective, the rear portion closure is fixedly installed the fixing sleeve of annular beyond the Great Wall
Ring, retaining collar are socketed on rear portion closure beyond the Great Wall；The rear portion closure is also socketed with removable limited location snap ring, limiting card beyond the Great Wall
One end of ring is contacted with retaining collar, the other end and the end in contact after the oversheath of rear portion of limited location snap ring.
When not in use, limited location snap ring can play the work for preventing that rear portion closure plug from relatively moving with rear portion oversheath
With.Just limited location snap ring is removed when needing rear portion closure plug to be relatively moved with rear portion oversheath, is prevented because maloperation will
Internal lancet and means are exposed in air.
Optimization, the injection needle of above-mentioned closed protective, the internal connection sleeve is conical tube, inside connection sleeve
Conical tip towards internal connection sleeve, the shape of inside connection through hole connects sleeve and is equipped with internal；In described
Elastic silica gel is enclosed with the outer surface of portion's connection sleeve.
The elastic silica gel wrapped up on the outer surface of internal connection sleeve can increase internal connection sleeve and lead to internal connect
The connection sealing in hole, inside connection sleeve and the internal through hole that connect are arranged to cone and can increase inside to connect sleeve and interior
Contact area after portion's connection through hole contact, increases connection sealing.
The advantage of the invention is that：When in use, rear portion closure plug is installed on syringe for the injection needle of the application,
The end connecting pin of insulin syringe is normal structure in the prior art, and the rear portion of the application blocks the rear aperture shape of plug
Shape can be fabricated to the normal structure coordinated with the end connecting pin of insulin syringe.It is installed in the injection needle of the application
After on syringe, the position being blocked in the oversheath of rear portion is sealed by mobile rear portion so that inside connection sleeve internally connects
Hole direction is mobile all and is inserted into internal connection through hole, after being connected inside inside connection sleeve insertion in through hole, rear portion
Closure plug continues to move to and promotes slip cavity and piercing needle to be moved in the oversheath of front end by inside connection sleeve so that
Piercing needle punctures diaphragm seal two and tip stretches in and slides in sheath.In order to prevent piercing needle with patient contact it
It is preceding to be exposed in air, add slip sheath in the technical solution of the application, when use will slide the front end face alignment of sheath
Patient's epidermal injection position, forces on front end oversheath and rear portion oversheath so that front end oversheath is with sliding sheath
Relative motion, in sheath moving process is slided, piercing needle directly punctures patient's epidermis after puncturing diaphragm seal one, avoids and wears
Pricker head and air contact.
Brief description of the drawings
Fig. 1 is the structure diagram of the present invention；
Fig. 2 is the internal structure schematic diagram of the present invention；
Fig. 3 is enlarged drawing at the A of Fig. 2.
Embodiment
Below in conjunction with the accompanying drawings with the specific embodiment technical characterstic that the present invention is further explained.
The present invention is a kind of injection of insulin syringe needle of closed protective, including front end oversheath 1 and rear portion oversheath 2, outside front end
The front end closing of sheath 1, the open rearward end of front end oversheath 1, the rear end of front end oversheath 1 connects with the front end of rear portion oversheath 2
Connect, the open rearward end of rear portion oversheath 2；Rear portion closure plug 3, one end of rear portion closure plug 3 are provided with the rear portion oversheath 2
It is arranged in rear portion oversheath 2, closure 3 other ends of plug in rear portion are arranged at outside rear portion oversheath 2；Set in the front end oversheath 1
It is equipped with piercing needle 4；It is socketed with outside the front end of the front end oversheath 1 and slides sheath 5, slides sheath 5 and front end oversheath 1
It is slidably connected；The front end of the piercing needle 4 is puncture tip, and the rear end of piercing needle 4, which is connected with, slides cavity 6, puncture needle
First 4 connect with sliding cavity 6, slide cavity 6 and are arranged in front end oversheath 1；The rear portion closure plug 3, which is arranged at outside rear portion, to be protected
Internal connection sleeve 7 is provided with the end face of one end in set 2, slides and internal connection through hole is provided with the rear end face of cavity 6
8, inside connection sleeve 7 connects through hole 8 with inside and is equipped with；Through hole 1 is provided with the front end face for sliding sheath 5,
Diaphragm seal 1 is provided with through hole 1；Through hole 2 11 is provided with the front end face of the front end oversheath 1, in through hole 2 11
It is provided with diaphragm seal 2 12；Diaphragm seal 3 13, the rear end of front end oversheath 1 are fitted with the rear end face of the rear portion oversheath 2
It is internally provided with inner sealing piece 30.
In the technical solution of the application, front end oversheath 1, rear portion oversheath 2 and rear portion closure plug 3 surround one closing
Space, piercing needle 4 is arranged in the space of this closing, after the outer packing of injection needle is removed, by being protected outside front end
Set 1, rear portion oversheath 2 and rear portion closure plug 3 protect piercing needle 4 with air contact, not avoid piercing needle 4 exposed to sky
It is contaminated in gas.
The injection needle of the application when in use, rear portion closure plug 3 is installed on syringe, in the prior art insulin
The end connecting pin of syringe is normal structure, the rear aperture shape of the rear portion closure plug 3 of the application can be fabricated to
The normal structure that the end connecting pin of insulin syringe coordinates.After the injection needle of the application is installed on syringe,
Pass through 3 position in rear portion oversheath 2 of mobile rear portion closure plug so that inside connection sleeve 7 internally connects 8 direction of through hole
Move and be inserted into internal connection through hole 8, after in inside, connection sleeve 7 is inserted into internal connection through hole 8, rear portion closure plug 3
Continue to move to and promote slip cavity 6 and piercing needle 4 to be moved in front end oversheath 1 by inside connection sleeve 7 so that wear
Pricker first 4 punctures diaphragm seal 2 12 and tip stretches in and slides in sheath 5.Piercing needle 4 connects with patient skin in order to prevent
It is exposed to before touching in air, is added in the technical solution of the application and slide sheath 5, the front end of sheath 5 will be slided during use
In face of quasi- patient's epidermal injection position, force on front end oversheath 1 and rear portion oversheath 2 so that front end oversheath 1 is with sliding
Relative motion occurs for sheath 5, and in 5 moving process of sheath is slided, piercing needle 4 directly punctures patient after puncturing diaphragm seal 1
Epidermis, avoids piercing needle 4 and air contact.
When rear portion closure plug 3 is installed on syringe, diaphragm seal 3 13 is removed if desired, then rear portion closure plug 3
Inside can for some time be exposed to air in, in order to avoid this case, the diaphragm seal 3 13 of the application can use aluminium
Foil paper material, when rear portion closure plug 3 is socketed on the end of syringe, it is not necessary to remove diaphragm seal 3 13, need to only be socketed
When by the end of syringe by 3 13 bursting of diaphragm seal, the inside that can reduce rear portion closure plug 3 is exposed in air
Time.
Some inside guide pins 14 being arranged in parallel are provided with the front end oversheath 1, piercing needle 4 is led through inside
To piece 14 and with internal 14 sliding contact of guide pin.
When piercing needle 4 slides, internal guide pin 14 plays the role of being oriented to piercing needle 4, keeps piercing needle 4
With the concentricity of front end oversheath 1.
Described slide is provided with the fixed cavity 6 that slides in front end oversheath 1 between cavity 6 and the inner wall of front end oversheath 1
The fixed component of interior position, rear portion closure is filled in is provided with internal socket on the end face of 3 one end being arranged in rear portion oversheath 2
Casing 15；After rear portion closure plug 3 is mobile in rear portion oversheath 2, internal slip joint casing 15 by fixed component with slide cavity 6 every
It is socketed on from and by slip cavity 6 in internal slip joint casing 15；The internal connection sleeve 7 is arranged at internal slip joint casing 15
It is interior.
Cavity 6 and piercing needle 4 are slided in order to prevent and is moved when unused, are set in the technical solution of the application
Fixed component is with the fixed position for sliding cavity 6 and piercing needle 4 in front end oversheath 1.When rear portion closure plug 3 is at rear portion
In oversheath 2 after movement, internal slip joint casing 15 will slide cavity 6 after can inner sealing piece 30 be punctured and be socketed on internal socket
Casing 15, slip cavity 6 is isolated so that sliding cavity 6 with fixed component and is disengaged with fixed component.
If the fixed component includes dry elasticity bending bar 16, elastic bending bar 16 is arranged at the both sides for sliding cavity 6, bullet
One end of property bending bar 16 is fixedly connected with the inner wall of front end oversheath 1, and the other end of elastic bending bar 16 is provided with triangle
Fixed chuck 17, slide cavity 6 outer wall on be provided with card slot 18, fixed chuck 17 is connected in card slot 18.
Cavity 6 and piercing needle 4 are slided in order to prevent and is moved when unused, are set in the technical solution of the application
Fixed component is with the fixed position for sliding cavity 6 and piercing needle 4 in front end oversheath 1.When rear portion closure plug 3 is at rear portion
In oversheath 2 after movement, internal slip joint casing 15 can puncture inner sealing piece 30, the end of internal slip joint casing 15 and fixation
Clamp 17 contacts so that fixed chuck 17 departs from card slot 18, and then slip cavity 6 is socketed in internal slip joint casing 15.
Tension spring 19, the both ends of tension spring 19 are provided between the inside guide pin 14 and slip cavity 6 adjacent with sliding cavity 6
It is fixedly connected respectively with internal guide pin 14, slip cavity 6.
After fixed chuck 17 departs from card slot 18, the pulling force of tension spring 19 to slide internally 14 direction of guide pin of cavity 6
It is mobile.
Elastic supporting bar 20, the both ends point of elastic supporting bar 20 are provided between the slip sheath 5 and rear portion oversheath 2
Not with sliding sheath 5, rear portion oversheath 2 is fixedly connected.
5 maloperation of sheath is slided in order to prevent, elastic supporting bar 20 is added in the technical solution of the application, and support is slided
Position between sheath 5 and rear portion oversheath 2.When in use, deformed by the elastic supporting bar 20 that exerts a force.Injecting
Cheng Hou, elastic supporting bar 20 occur elasticity and recover to put so that sliding sheath 5 and setting back, and such piercing needle 4 is slided again
Sheath 5 wraps up, and prevents the exposure of piercing needle 4 from accidentally injuring other people.
The elastic supporting bar 20 is the stretchy nylon bar of arc.
External screw thread is provided with the outer surface side wall of the rear portion closure plug 3, is set on the inner surface of rear portion oversheath 2
It is equipped with internal thread, rear portion closure plug 3 and 2 thread fitting of rear portion oversheath.
Rear portion closure plug 3 and 2 thread fitting of rear portion oversheath, when so there was only portion's oversheath 2 after rotation, rear portion closure
Plug 3 can just be relatively moved with rear portion oversheath 2, prevent the generation of maloperation.
The retaining collar 21 of annular is fixedly installed on the rear portion closure plug 3, retaining collar 21 is socketed on rear portion closure
On plug 3；Removable limited location snap ring 22, one end of limited location snap ring 22 and retaining collar are also socketed with the rear portion closure plug 3
21 contacts, the other end and the end in contact after rear portion oversheath 2 of limited location snap ring 22.
When not in use, limited location snap ring 22, which can play, prevents rear portion closure plug 3 from being relatively moved with rear portion oversheath 2
Effect.When needing rear portion closure plug 3 to be relatively moved with rear portion oversheath 2, ability removes limited location snap ring 22, prevent because
Internal lancet and means are exposed in air by maloperation.
The internal connection sleeve 7 is conical tube, the internal connection sleeve of conical tip direction of inside connection sleeve 7
7, the shape of inside connection through hole 8 connects sleeve 7 with inside and is equipped with；Wrapped up on the outer surface of the internal connection sleeve 7
Flexible silica gel.
The elastic silica gel wrapped up on the outer surface of inside connection sleeve 7 can increase internal connection sleeve 7 and be connected with inside
The connection sealing of through hole 8, inside connection sleeve 7 and the internal through hole 8 that connect are arranged to cone and can increase internal connect to cover
Cylinder 7 connects the contact area after through hole 8 contacts with inside, increases connection sealing.
Certainly, it is limitation of the present invention that described above, which is not, and the present invention is also not limited to the example above, the art
Those of ordinary skill, in the essential scope of the present invention, the variations, modifications, additions or substitutions made, should all belong to the present invention
Protection domain.
Claims (10)
- A kind of 1. injection of insulin syringe needle of closed protective, it is characterised in that：Including front end oversheath（1）With rear portion oversheath （2）, front end oversheath（1）Front end closing, front end oversheath（1）Open rearward end, front end oversheath（1）Rear end and rear portion Oversheath（2）Front end connection, rear portion oversheath（2）Open rearward end；The rear portion oversheath（2）Inside it is provided with rear portion closure Plug（3）, rear portion closure plug（3）One end be arranged at rear portion oversheath（2）It is interior, rear portion closure plug（3）The other end is arranged at rear portion Oversheath（2）Outside；The front end oversheath（1）Inside it is provided with piercing needle（4）；The front end oversheath（1）Front end outside It is socketed with slip sheath（5）, slide sheath（5）With front end oversheath（1）It is slidably connected；The piercing needle（4）Front end be Puncture tip, piercing needle（4）Rear end be connected with slip cavity（6）, piercing needle（4）With sliding cavity（6）Connection, is slided Cavity（6）It is arranged at front end oversheath（1）It is interior；The rear portion closure plug（3）It is arranged at rear portion oversheath（2）The end of interior one end Internal connection sleeve is provided with face（7）, slide cavity（6）Rear end face on be provided with internal connection through hole（8）, inside connection Sleeve（7）Through hole is connected with inside（8）It is equipped with；The slip sheath（5）Front end face on be provided with through hole one（9）, lead to Kong Yi（9）Inside it is provided with diaphragm seal one（10）；The front end oversheath（1）Front end face on be provided with through hole two（11）, through hole Two（11）Inside it is provided with diaphragm seal two（12）；The rear portion oversheath（2）Rear end face on be fitted with diaphragm seal three（13）, front end Oversheath（1）Rear end be internally provided with inner sealing piece（30）.
- 2. the injection needle of closed protective according to claim 1, it is characterised in that：The front end oversheath（1）Inside set It is equipped with some inside guide pins being arranged in parallel（14）, piercing needle（4）Through internal guide pin（14）And with internal guide pin （14）Sliding contact.
- 3. the injection needle of closed protective according to claim 2, it is characterised in that：The slip cavity（6）With front end Oversheath（1）Inner wall between be provided with and fixed slide cavity（6）In front end oversheath（1）The fixed component of interior position, after Portion's closure plug（3）It is arranged at rear portion oversheath（2）Internal slip joint casing is provided with the end face of interior one end（15）；Rear portion blocks Plug（3）In rear portion oversheath（2）After interior movement, internal slip joint casing（15）By fixed component with sliding cavity（6）Isolate and incite somebody to action Slide cavity（6）It is socketed on internal slip joint casing（15）It is interior；The internal connection sleeve（7）It is arranged at internal slip joint casing（15） It is interior.
- 4. the injection needle of closed protective according to claim 3, it is characterised in that：The fixed component includes some bullets Property bending bar（22）, elastic bending bar（22）It is arranged at slip cavity（6）Both sides, elastic bending bar（22）One end and front end Oversheath（1）Inner wall be fixedly connected, elastic bending bar（22）The other end be provided with the fixed chuck of triangle（17）, slide Cavity（6）Outer wall on be provided with card slot（18）, fixed chuck（17）It is connected in card slot（18）It is interior.
- 5. the injection needle of closed protective according to claim 3, it is characterised in that：With sliding cavity（6）Adjacent is interior Portion's guide pin（14）With sliding cavity（6）Between be provided with tension spring（19）, tension spring（19）Both ends respectively with internal guide pin （14）, slide cavity（6）It is fixedly connected.
- 6. the injection needle of closed protective according to claim 1, it is characterised in that：The slip sheath（5）With rear portion Oversheath（2）Between be provided with elastic supporting bar（20）, elastic supporting bar（20）Both ends respectively with slide sheath（5）, rear portion Oversheath（2）It is fixedly connected.
- 7. the injection needle of closed protective according to claim 6, it is characterised in that：The elastic supporting bar（20）For arc The stretchy nylon bar of shape.
- 8. the injection needle of closed protective according to claim 1, it is characterised in that：The rear portion closure plug（3） Outer surface side wall on be provided with external screw thread, rear portion oversheath（2）Inner surface on be provided with internal thread, rear portion closure plug（3） With rear portion oversheath（2）Thread fitting.
- 9. the injection needle of closed protective according to claim 2, it is characterised in that：The rear portion closure plug（3）It is upper solid Surely it is provided with the retaining collar of annular（21）, retaining collar（21）It is socketed on rear portion closure plug（3）On；The rear portion closure plug （3）On be also socketed with removable limited location snap ring（23）, limited location snap ring（23）One end and retaining collar（21）Contact, limiting card Ring（23）The other end and rear portion oversheath（2）End in contact afterwards.
- 10. the injection needle of closed protective according to claim 1, it is characterised in that：The internal connection sleeve（7）For Conical tube, inside connection sleeve（7）Conical tip towards internal connection sleeve（7）, inside connection through hole（8）Shape Sleeve is connected with inside（7）It is equipped with；The internal connection sleeve（7）Outer surface on be enclosed with elastic silica gel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711321606.5A CN107929885B (en) | 2017-12-12 | 2017-12-12 | Insulin syringe needle with closed protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711321606.5A CN107929885B (en) | 2017-12-12 | 2017-12-12 | Insulin syringe needle with closed protection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107929885A true CN107929885A (en) | 2018-04-20 |
| CN107929885B CN107929885B (en) | 2020-08-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711321606.5A Active CN107929885B (en) | 2017-12-12 | 2017-12-12 | Insulin syringe needle with closed protection |
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| Country | Link |
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| CN (1) | CN107929885B (en) |
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| CN114173941A (en) * | 2019-08-02 | 2022-03-11 | 诺信公司 | Dispensing tip and method of making a dispensing tip |
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| Publication number | Publication date |
|---|---|
| CN107929885B (en) | 2020-08-14 |
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Inventor after: Wei Jiachen Inventor after: Shi Yaling Inventor after: Zhang Weitao Inventor after: Xiang Hongxian Inventor before: Xiang Hongxian |
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