CN209575432U - Injection device for pre-encapsulated injector - Google Patents
Injection device for pre-encapsulated injector Download PDFInfo
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- CN209575432U CN209575432U CN201821608050.8U CN201821608050U CN209575432U CN 209575432 U CN209575432 U CN 209575432U CN 201821608050 U CN201821608050 U CN 201821608050U CN 209575432 U CN209575432 U CN 209575432U
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- 238000002347 injection Methods 0.000 title claims abstract description 64
- 239000007924 injection Substances 0.000 title claims abstract description 64
- 230000000712 assembly Effects 0.000 claims abstract description 41
- 238000000429 assembly Methods 0.000 claims abstract description 41
- 238000001727 in vivo Methods 0.000 claims 1
- 208000012266 Needlestick injury Diseases 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 9
- 230000000694 effects Effects 0.000 description 6
- 208000027418 Wounds and injury Diseases 0.000 description 4
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 230000006378 damage Effects 0.000 description 3
- 208000014674 injury Diseases 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 206010052428 Wound Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000001467 acupuncture Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010999 medical injection Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model provides a kind of injection device for pre-encapsulated injector, comprising: the upper pen cap and the lower pen cap, the upper pen cap and the lower pen cap are respectively formed as hollow columnar, and the upper pen cap and the lower pen cap are detachably connected；Upper pen cap lid, upper pen cap lid are located on the pen cap；Push-rod assembly, push-rod assembly is located in the pen cap and at least some protrudes into the lower pen cap, and push-rod assembly is movable in the axial direction of the upper pen cap and the lower pen cap；Pen core, pen core is located in the lower pen cap and at least part stretches out the lower pen cap；Hidden needle assemblies, hidden needle assemblies are located under the stretching of pen core on the part of the pen cap, and hidden needle assemblies are movable in the axial direction of the lower pen cap；Hidden needle is from lock set, and hidden needle is located at one end of push-rod assembly and stops from lock set supports hidden needle assemblies, and hidden needle is matched from lock set with push-rod assembly and hidden needle assemblies.The injection device for pre-encapsulated injector of the utility model embodiment generates the feared state of mind, while syringe needle can be made all to be protected when patient being avoided to inject, avoid unexpected needle stick injury.
Description
Technical field
The utility model relates to medical injection technical fields, more particularly, to a kind of note for pre-encapsulated injector
Injection device.
Background technique
The syringe needle of existing pre-encapsulated injector (PFS) all it is exposed outside, patient using when easily cause fear,
Cause psychological pressure.Simultaneously because syringe needle is outside, without any protective device, patient when in use, be easy to cause other need not
The injury wanted.After injection, syringe needle is not protected well, also be easy to cause injury.
Moreover, existing pre-encapsulated injector (PFS) requires operation push rod after syringe needle is inserted into skin just can be carried out injection,
It is more complicated, operator is required relatively high, and Most patients by manually mode for being had an acupuncture treatment and being carried out skin
Lower injection has the feared state of mind.When carrying out hand injection for the patient that some are in a bad way, the shaking of hand can give oneself band
Carry out biggish inserting needle wound face.
Utility model content
In view of this, the present invention provides a kind of automatic injections, with injecting for pre- encapsulating for syringe needle protection structure
The injection device of device.
In order to solve the above technical problems, the utility model uses following technical scheme:
According to the injection device for pre-encapsulated injector of the utility model embodiment, comprising:
The upper pen cap and the lower pen cap, the upper pen cap and the lower pen cap are respectively formed as hollow columnar, the upper pen cap and
The lower pen cap is detachably connected；
Upper pen cap lid, the upper pen cap lid are located on the upper pen cap；
Push-rod assembly, the push-rod assembly is located in the upper pen cap and at least some protrudes into the lower pen cap, institute
The axial direction that push-rod assembly is stated in the upper pen cap and the lower pen cap is movable；
Pen core, the pen core is located in the lower pen cap and at least part stretches out the lower pen cap to infuse to skin
It penetrates；
Hidden needle assemblies, the hidden needle assemblies are located on the part of the stretching lower pen cap of the pen core, the hidden needle group
Part is movable in the axial direction of the lower pen cap；
For hidden needle from lock set, the hidden needle is located at one end of the push-rod assembly and stops from lock set supports the hidden needle group
Part, the hidden needle are matched from lock set with the push-rod assembly and hidden needle assemblies to limit the hidden needle assemblies described and start writing
The axial moving position of set.
One embodiment according to the present utility model, the push-rod assembly include:
Pushing rod sleeve, the pushing rod sleeve are formed as hollow columnar, and the push rod is set in the upper pen cap, the pushing rod sleeve
It is equipped with card slot multiple axially extending along its and being circumferentially spaced arrangement；
Push rod, the outside wall surface of the push rod are equipped with multiple buckles corresponding with the card slot, and the push rod is located at described
In pushing rod sleeve and only to the upper pen cap lid, at least part of the push rod protrudes into the lower pen cap；
Inserting needle spring, the inserting needle spring are located at one end of the neighbouring upper pen cap lid of the push rod by the inserting needle
Spring drives the push rod movable in the axial direction of the upper pen cap and the lower pen cap.
One embodiment according to the present utility model, the push rod include:
First body of rod and second body of rod, the buckle are located on first body of rod, and the inserting needle spring is located at described
In one body of rod, first body of rod is coaxially connected with second body of rod and the radial dimension of first body of rod is greater than described the
The radial dimension of bipole body, the axial dimension of first body of rod are less than the axial dimension of second body of rod.
One embodiment according to the present utility model, one end of first body of rod are additionally provided with along its axially extending card
It hooks, the center of the upper pen cap lid is equipped with along its axially extending lug boss, and the hook is matched with the lug boss
Tight against the upper pen cap lid.
One embodiment according to the present utility model, the pen core include:
Pen core ontology defines chamber in the pen core ontology, and the pen core ontology is located in the lower pen cap；
Syringe needle, the syringe needle are located at one end of the pen core ontology and stretch out the lower pen cap, and hidden needle assemblies are located at described
On syringe needle.
One embodiment according to the present utility model, the hidden needle assemblies include:
Hidden needle, the hidden needle are located on the syringe needle；
Hidden needle spring, the hidden needle spring are located in the hidden needle and drive the hidden needle to exist by the hidden needle spring
It is movable in the axial direction of the lower pen cap.
One embodiment according to the present utility model, the hidden needle include:
First hidden needle ontology defines guide channel on the first hidden needle ontology, and it is hidden that the syringe needle is located at described first
On needle ontology, it is additionally provided on the push rod along the outwardly projecting convex ribs of its outside wall surface, the convex ribs drive self-locking group of the hidden needle
Part rotation is with movable from the hidden needle ontology of lock set limitation described first by the hidden needle；
Second hidden needle ontology, the second hidden needle ontology are formed as the hollow columnar being connected to the described first hidden needle ontology.
One embodiment according to the present utility model, the injection device for pre-encapsulated injector further include:
Pen core cap, the pen core cap sleeve is located on the syringe needle and the pen core cap is located in the described first hidden needle ontology,
The outside wall surface of the pen core cap is equipped with along its groove axially extending and in circumferentially spaced arrangement；
It starts writing upper shield, the upper shield of starting writing is connected with the lower pen cap, and the upper shield of starting writing is formed as hollow columnar and institute
The axial direction that hidden needle assemblies are stated in the upper shield of starting writing is movable；
End cap, the end cap are formed as hollow columnar, the end cap be equipped with along its it is axially extending pull out hook, it is described to pull out hook
It is corresponding with the groove to pull out the pen core cap by the hook that pulls out.
One embodiment according to the present utility model, the hidden needle include: from lock set
Retainer plate, the retainer plate are formed as column, and the retainer plate is located on the push rod；
Hidden needle self-locking spring, the hidden needle self-locking spring are located on the retainer plate；
Two hidden needle self-locking rings, two hidden needle self-locking rings are sequentially arranged on the hidden needle self-locking spring, the hidden needle
Self-locking ring is equipped with along its axially extending guiding rib, and the guiding rib is matched with the guide channel.
One embodiment according to the present utility model, the injection device for pre-encapsulated injector further include:
Pen cap connector, the pen cap connector are formed as hollow columnar, and the pen cap connector is located at the upper pen cap and starts writing
To connect the upper pen cap and the lower pen cap between set.
The above-mentioned technical proposal of the utility model has the beneficial effect that:
According to the injection device for pre-encapsulated injector of the utility model embodiment, by simply pressing on the skin
Pressure can start injection, and easy to operate and comfortable, which can cover needle
Head insertion, generates the feared state of mind when patient being avoided to inject, at the same this be used for the injection device of pre-encapsulated injector before use, make
With that syringe needle can be made all to be protected in the process and after, unexpected needle stick injury is avoided.
Detailed description of the invention
Fig. 1 is the explosive view of the injection device for pre-encapsulated injector of the utility model embodiment；
Fig. 2 is a cross-sectional view of the injection device for pre-encapsulated injector of the utility model embodiment；
Fig. 3 is another cross-sectional view of the injection device for pre-encapsulated injector of the utility model embodiment；
Fig. 4 is another cross-sectional view of the injection device for pre-encapsulated injector of the utility model embodiment.
Appended drawing reference:
Injection device 100 for pre-encapsulated injector；
The upper pen cap 10；The lower pen cap 11；Pen cap connector 12；
Upper pen cap lid 20；Lug boss 21；It starts writing upper shield 22；
Push-rod assembly 30；Pushing rod sleeve 31；Card slot 311；Push rod 32；First body of rod 321；Second body of rod 322；Hook 323；It is convex
Muscle 324；Inserting needle spring 33；
Pen core 40；Pen core ontology 41；Syringe needle 42；
Hidden needle assemblies 50；Hidden needle 51；Guide channel 511；Hidden needle spring 52；
Hidden needle is from lock set 60；Retainer plate 61；Hidden needle self-locking spring 62；Hidden needle self-locking ring 63；
Pen core cap 70；Groove 71；
End cap 80；Pull out hook 81.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
The technical solution of the utility model embodiment is clearly and completely described in the attached drawing of type embodiment.Obviously, described
Embodiment is a part of the embodiment of the utility model, instead of all the embodiments.Based on described the utility model
Embodiment, those of ordinary skill in the art's every other embodiment obtained, fall within the protection scope of the utility model.
Unless otherwise defined, technical term or scientific term used in the utility model should be the utility model institute
The ordinary meaning that personage in category field with general technical ability is understood." first ", " second " used in the utility model with
And similar word is not offered as any sequence, quantity or importance, and be used only to distinguish different component parts." even
Connect " either the similar word such as " connected " be not limited to physics or mechanical connection, but may include electrical company
It connects, it is either direct or indirect."upper", "lower", "left", "right" etc. are only used for indicating relative positional relationship, when being retouched
After the absolute position change for stating object, then the relative positional relationship also correspondingly changes.
The injection for pre-encapsulated injector according to the utility model embodiment is specifically described in conjunction with attached drawing first below
Device 100.
As shown in Figures 1 to 4, it is wrapped according to the injection device 100 for pre-encapsulated injector of the utility model embodiment
The pen cap 10, the lower pen cap 11, push-rod assembly 30, pen core 40, hidden needle assemblies 50 and hidden needle are included from lock set 60.
Specifically, the upper pen cap 10 and the lower pen cap 11 are respectively formed as hollow columnar, the upper pen cap 10 and the lower pen cap 11 are removable
It is connected with unloading.Upper pen cap lid 20 is located on the pen cap 10.Push-rod assembly 30 is located in the pen cap 10 and at least some protrudes into down
In the pen cap 11, push-rod assembly 30 is movable in the axial direction of the upper pen cap 10 and the lower pen cap 11.Pen core 40 is located in the lower pen cap 11 and extremely
Few a part stretches out the lower pen cap 11 to inject to skin.Hidden needle assemblies 50 are located at the part of the pen cap 11 under the stretching of pen core 40
On, hidden needle assemblies 50 are movable in the axial direction of the lower pen cap 11.Hidden needle is located at one end of push-rod assembly 30 from lock set 60 and only supports
Hidden needle assemblies 50, hidden needle are matched from lock set 60 with push-rod assembly 30 and hidden needle assemblies 50 to limit hidden needle assemblies 50 and start writing
The axial moving position of set 11.
In other words, according to the injection device 100 for pre-encapsulated injector of the utility model embodiment mainly by upper pen
Set 10, the lower pen cap 11, push-rod assembly 30, pen core 40, hidden needle assemblies 50 and hidden needle are formed from lock set 60.Wherein, the upper pen cap 10
It can be processed into hollow columnar respectively with the lower pen cap 11, the upper pen cap 10 and the lower pen cap 11 are detachably connected, specifically, the upper pen cap
10 and the lower pen cap 11 on can be machined with the screw thread being mutually twisted respectively, the upper pen cap 10 and the lower pen cap 11 can be threadedly coupled.On
Pen cap lid 20 may be mounted on the pen cap 10.Push-rod assembly 30 may be mounted in the pen cap 10, and push-rod assembly 30 is at least
Some can protrude into the lower pen cap 11, and push-rod assembly 30 can be movable in the axial direction of the upper pen cap 10 and the lower pen cap 11, be convenient for
30 pushing pen refill 40 of push-rod assembly simultaneously injects patient.
Pen core 40 may be mounted in the lower pen cap 11, and at least part of pen core 40 can stretch out the lower pen cap 11, pen core 40
Stretching under the part of the pen cap 11 skin can be injected.Hidden needle assemblies 50 may be mounted at the pen cap under the stretching of pen core 40
On 11 part, hidden needle 51 can cover the insertion of syringe needle 42, the feared state of mind be generated when patient being avoided to inject, while passing through hidden needle
The injection device 100 in pre-encapsulated injector can be used in component 50 can make before use, in use process and after
Syringe needle 42 is all protected, and unexpected needle stick injury is avoided.Hidden needle assemblies 50 can activity in the axial direction of the lower pen cap 11.Hidden needle
It may be mounted at one end of push-rod assembly 30 from lock set 60, and hidden needle can only support hidden needle assemblies 50 from lock set 60, it is hidden
Needle can be matched from lock set 60 with push-rod assembly 30 and hidden needle assemblies 50, limit hidden needle assemblies 50 in the axial direction of the lower pen cap 11
Moving position, complete for pre-encapsulated injector injection device 100 automatic injection process, it is easy to operate and comfortable.
As a result, according to the injection device 100 for pre-encapsulated injector of the utility model embodiment, by simply existing
Pressing can start injection on skin, and easy to operate and comfortable, this is used for the hidden needle of the injection device 100 of pre-encapsulated injector
51 can cover the insertion of syringe needle 42, the feared state of mind be generated when patient being avoided to inject, while this is used for the injection of pre-encapsulated injector
Device 100 can be such that syringe needle 42 is all protected before use, in use process and after, and unexpected needle is avoided to stab
Evil.
One embodiment according to the present utility model, push-rod assembly 30 include drawbar set, push rod 32 and inserting needle spring 33.
Specifically, pushing rod sleeve 31 is formed as hollow columnar, and pushing rod sleeve 31 is located in the pen cap 10, and pushing rod sleeve 31 is equipped with more
Card slot 311 that is a axially extending along its and being circumferentially spaced arrangement.The outside wall surface of push rod 32 is equipped with multiple with 311 phase of card slot
Corresponding buckle, push rod 32 are located in pushing rod sleeve 31 and only support upper pen cap lid 20, and at least part of push rod 32 protrudes into the lower pen cap
11.Inserting needle spring 33 be located at one end of the neighbouring upper pen cap lid 20 of push rod 32 with by 33 driving push rod 32 of inserting needle spring in the upper pen cap
10 and the lower pen cap 11 axial direction it is movable.
That is, push-rod assembly 30 is mainly made of drawbar set, push rod 32 and inserting needle spring 33.Wherein, pushing rod sleeve 31
It can be processed into hollow columnar, pushing rod sleeve 31 may be mounted in the pen cap 10, card slot 311 can be machined on pushing rod sleeve 31,
Card slot 311 can be axially extending along its and be circumferentially spaced arrangement.The outside wall surface of push rod 32 can be machined with multiple and card
The corresponding buckle of slot 311, push rod 32 can be fastened in pushing rod sleeve 31, and push rod 32 can only support upper pen cap lid 20, push away
At least part of bar 32 can protrude into the lower pen cap 11.Inserting needle spring 33 may be mounted at the neighbouring upper pen cap lid 20 of push rod 32
One end, can the carry out activity in the axial direction of the upper pen cap 10 and the lower pen cap 11 with driving push rod 32 by inserting needle spring 33.
In some specific embodiments of the utility model, push rod 32 includes first body of rod 321 and second body of rod 322.
Specifically, buckle is located on first body of rod 321, and inserting needle spring 33 is located in first body of rod 321, first body of rod 321
Coaxially be connected with second body of rod 322 and radial dimension of the radial dimension of first body of rod 321 greater than second body of rod 322, the first bar
Axial dimension of the axial dimension of body 321 less than second body of rod 322.
In other words, push rod 32 is mainly made of first body of rod 321 and second body of rod 322.Wherein, buckle can be processed
On first body of rod 321, inserting needle spring 33 be may be mounted in first body of rod 321, and first body of rod 321 and second body of rod 322 can be with
It is coaxial to be connected, and the radial dimension of first body of rod 321 can be greater than the radial dimension of second body of rod 322, first body of rod 321
Axial dimension can only can support pen core 40 less than the axial dimension of second body of rod 322, one end of second body of rod 322, in order to
Rubber plug in pushing pen refill 40 carries out injection of skin.
One embodiment according to the present utility model, one end of first body of rod 321 are additionally provided with along its axially extending hook
323, the center of upper pen cap lid 20 is equipped with along its axially extending lug boss, hook 323 matched with lug boss with tight against
Upper pen cap lid 20.
That is, one end of first body of rod 321 can also be machined with along its axially extending hook 323, upper pen cap lid
20 center can be machined with along its axially extending lug boss, and hook 323 can be matched with lug boss, in order to push away
Bar 32 is tight against upper pen cap lid 20.
One embodiment according to the present utility model, pen core 40 include pen core ontology 41 and syringe needle 42.
Specifically, chamber is defined in pen core ontology 41, pen core ontology 41 is located in the lower pen cap 11.Syringe needle 42 is located at pen core
One end of ontology 41 and the lower pen cap 11 is stretched out, hidden needle assemblies 50 are located on syringe needle 42.
In other words, pen core 40 is mainly made of pen core ontology 41 and syringe needle 42.Wherein, it can be processed in pen core ontology 41
There is chamber, injection can be in chamber, and one end of pen core ontology 41 can be sealed by rubber plug.Pen core ontology 41 can
To be mounted in the lower pen cap 11.Syringe needle 42 can process one end in pen core ontology 41, and syringe needle 42 can stretch out the lower pen cap 11, hidden
Needle assemblies 50 may be mounted on syringe needle 42.Syringe needle 42 can be covered by hidden needle assemblies 50 to be inserted into, production when patient being avoided to inject
The raw feared state of mind, while this is used for the injection device 100 of pre-encapsulated injector before use, energy in use process and after use
It protects syringe needle 42 all, avoids unexpected needle stick injury.
In some specific embodiments of the utility model, hidden needle assemblies 50 include hidden needle 51 and hidden needle spring 52.
Specifically, hidden needle 51 is located on syringe needle 42, and hidden needle spring 52 is located in hidden needle 51 and is driven by hidden needle spring 52
It is movable in the axial direction of the lower pen cap 11 to move hidden needle 51.
That is, hidden needle assemblies 50 are mainly made of hidden needle 51 and hidden needle spring 52.Wherein, hidden needle 51 can pacify
On syringe needle 42, syringe needle 42 can be covered by hidden needle 51 and be inserted into, the feared state of mind is generated when patient being avoided to inject, simultaneously should
Injection device 100 for pre-encapsulated injector can be such that syringe needle 42 all obtains before use, in use process and after
Protection, avoids unexpected needle stick injury.Hidden needle spring 52 may be mounted in hidden needle 51, can be driven by hidden needle spring 52
Hidden needle 51 is movable in the axial direction of the lower pen cap 11, during the injection of injection device 100 for pre-encapsulated injector
Syringe needle 42 can be hidden always.
One embodiment according to the present utility model, hidden needle 51 include the first hidden needle ontology and the second hidden needle ontology.
Specifically, guide channel 511 is defined on the first hidden needle ontology, syringe needle 42 is located on the first hidden needle ontology, push rod
Be additionally provided on 32 along the outwardly projecting convex ribs 324 of its outside wall surface, convex ribs 324 drive hidden needle from lock set 60 rotate with by hidden needle from
The hidden needle ontology activity of the limitation of lock set 60 first.Second hidden needle ontology is formed as the hollow columnar being connected to the first hidden needle ontology.
In other words, hidden needle 51 is mainly made of the first hidden needle ontology and the second hidden needle ontology.Wherein, the first hidden needle sheet
Guide channel 511 can be machined on body, syringe needle 42 can be located on the first hidden needle ontology, and edge can also be machined on push rod 32
The outwardly projecting convex ribs 324 of its outside wall surface, convex ribs 324 can drive hidden needle to rotate from lock set 60, and self-locking by hidden needle
Component 60, which is pretended to know, can limit the first hidden needle ontology activity.Second hidden needle ontology can be processed into the first hidden needle ontology connection
Void column shape.
In some specific embodiments of the utility model, the injection device 100 for pre-encapsulated injector further includes
Pen core cap 70, start writing upper shield 22 and end cap 80.
Specifically, pen core cap 70 is set on syringe needle 42 and pen core cap 70 is located in the first hidden needle ontology, pen core cap 70
Outside wall surface is equipped with axially extending and in the groove of circumferentially spaced arrangement 71 along its.Upper shield 22 of starting writing is connected with the lower pen cap, under
Pen cap lid 22 is formed as hollow columnar and hidden needle assemblies 50 are movable in the axial direction for upper shield 22 of starting writing.End cap 80 is formed as hollow posts
Shape, end cap 80 be equipped with along its it is axially extending pull out hook 81, it is corresponding with groove 71 to pull out pen core cap by pulling out hook 81 to pull out hook 81
70。
That is, the injection device 100 for pre-encapsulated injector can also include pen core cap 70, start writing 22 and of upper shield
End cap 80.Wherein, pen core cap 70 may be mounted on syringe needle 42, and pen core cap 70 may be mounted in the first hidden needle ontology, pen core
It can be machined in the outside wall surface of cap 70 axially extending along its and in the groove of circumferentially spaced arrangement 71.Starting writing upper shield 22 can be with
It is connected with the lower pen cap 11, upper shield 22 of starting writing can be processed into hollow columnar, and hidden needle assemblies 50 can be in the axial direction of upper shield 22 of starting writing
Upper activity.End cap 80 can be processed into hollow columnar, can be machined on end cap 80 along its it is axially extending pull out hook 81, pull out hook 81
Can be corresponding with groove 71, pen core cap 70 is pulled out in order to pull out hook 81.
One embodiment according to the present utility model, hidden needle include retainer plate 61, hidden needle self-locking spring 62 from lock set 60
With two hidden needle self-locking rings 63.
Specifically, retainer plate 61 is formed as column, and retainer plate 61 is located on push rod 32.Hidden needle self-locking spring 62 is located at fixation
On circle 61.Two hidden needle self-locking rings 63 are sequentially arranged on hidden needle self-locking spring 62, and hidden needle self-locking ring 63 is equipped with to be prolonged along its axial direction
The guiding rib stretched, guiding rib are matched with guide channel 511.
In other words, hidden needle is from lock set 60 mainly by retainer plate 61, hidden needle self-locking spring 62 and two hidden needle self-locking rings
63 compositions.Wherein, retainer plate 61 can be processed into column, and retainer plate 61 may be mounted on push rod 32.Hidden needle self-locking spring 62
It may be mounted on retainer plate 61.Two hidden needle self-locking rings 63 can be sequentially arranged on hidden needle self-locking spring 62, and hidden needle is self-locking
It can be machined on circle 63 along its axially extending guiding rib, guiding rib can be matched with guide channel 511, be completed for pre-
The automatic injection process of the injection device 100 of encapsulated injector.
One embodiment according to the present utility model, the injection device 100 for pre-encapsulated injector further include that the pen cap connects
First 12.
Specifically, pen cap connector 12 is formed as hollow columnar, and pen cap connector 12 is located between the pen cap 10 and the lower pen cap 11
To connect the upper pen cap 10 and the lower pen cap 11.
That is, the injection device 100 for pre-encapsulated injector can also include pen cap connector 12.Pen cap connector 12
It can be processed into hollow columnar, pen cap connector 12 may be mounted between the pen cap 10 and the lower pen cap 11, in order to connect upper pen
Set 10 and the lower pen cap 11.Specifically, external screw thread can be machined in the outside wall surface at the both ends of pen cap connector 12, the upper pen cap 10 is under
Can be machined with respectively on the pen cap 11 with external screw thread cooperate internal screw thread, pen cap connector 12 can respectively with the upper pen cap 10 and the lower pen cap
11 are threadedly coupled, and assembly is simple, easily operated.
To sum up, according to the injection device 100 for pre-encapsulated injector of the utility model embodiment, by simple
Ground presses on the skin can start injection, easy to operate and comfortable, this is used for the hidden of the injection device 100 of pre-encapsulated injector
Needle 51 can cover the insertion of syringe needle 42, the feared state of mind be generated when patient being avoided to inject, while this is used for pre-encapsulated injector
Injection device 100 can be such that syringe needle 42 is all protected before use, in use process and after, and unexpected needle is avoided to pierce
Injury.
The injection for pre-encapsulated injector for describing the utility model with reference to the accompanying drawings and in conjunction with specific embodiments fills
Set 100 working principle.
As shown in Figures 1 to 4, when the injection device 100 for pre-encapsulated injector of the utility model embodiment is injected,
End cap 80 can be pulled out, end cap 80 can pull out pen core cap 70 by pulling out hook 81, then carry out the injection of skin push type.When hidden needle
When part 51 touches skin continuation stress, hidden needle 51 can be retracted upper shield 22 of starting writing, and (pen core can use 1ml to pen core 40
Core) syringe needle 42 can prick into skin, the end face of hidden needle 51 can be reduced to is with the move distance that upper shield 22 flushes of starting writing
9mm, hidden needle 51 are 4mm at a distance from pushing rod sleeve 31, i.e., after hidden needle 51 is contacted with pushing rod sleeve 31, also will drive pushing rod sleeve
31, inserting needle spring 33 and push rod 32 up move 5mm, and the buckle of 32 upper end of push rod is sent out by the effect of upper pen cap lid 20 at this time
Change shape, to contract, exits the bayonet of pushing rod sleeve 31 under the action of inserting needle spring 33, and move downward, further pushes away
The rubber plug started writing in core 40, is injected.
After injection terminates the rebound of hidden needle 51, the convex ribs 324 on push rod 32 can be applied to above hidden needle self-locking ring 63,
So that it is turned over certain angle, blocks originally through guide channel 511 in hidden needle 51, be simultaneously emitted by the sound of " click ".Later,
Hidden needle 51 cannot be moved up since guide channel 511 is blocked, in order to avoid exposing syringe needle 42, be damaged.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ",
The description of " preferred embodiment ", " specific embodiment " or " preferred embodiment " etc. means that the embodiment or example is combined to retouch
The particular features, structures, materials, or characteristics stated are contained at least one embodiment or example of the utility model.In this theory
In bright book, schematic expression of the above terms be may not refer to the same embodiment or example.Moreover, the specific spy of description
Sign, structure, material or feature can be combined in any suitable manner in any one or more of the embodiments or examples.
The above is preferred embodiments of the present invention, it is noted that for the ordinary skill of the art
For personnel, under the premise of not departing from principle described in the utility model, it can also make several improvements and retouch, these improvement
It also should be regarded as the protection scope of the utility model with retouching.
Claims (10)
1. a kind of injection device for pre-encapsulated injector characterized by comprising
The upper pen cap and the lower pen cap, the upper pen cap and the lower pen cap are respectively formed as hollow columnar, the upper pen cap and described
The lower pen cap is detachably connected；
Upper pen cap lid, the upper pen cap lid are located on the upper pen cap；
Push-rod assembly, the push-rod assembly is located in the upper pen cap and at least some protrudes into the lower pen cap, described to push away
Bar assembly is movable in the axial direction of the upper pen cap and the lower pen cap；
Pen core, the pen core is located in the lower pen cap and at least part stretches out the lower pen cap to inject to skin；
Hidden needle assemblies, the hidden needle assemblies are located on the part of the stretching lower pen cap of the pen core, and the hidden needle assemblies exist
The axial direction of the lower pen cap is movable；
For hidden needle from lock set, the hidden needle is located at one end of the push-rod assembly and stops from lock set supports the hidden needle assemblies, institute
Hidden needle is stated to be matched with the push-rod assembly and hidden needle assemblies from lock set to limit the hidden needle assemblies in the lower pen cap
Axial moving position.
2. the injection device according to claim 1 for pre-encapsulated injector, which is characterized in that the push-rod assembly packet
It includes:
Pushing rod sleeve, the pushing rod sleeve are formed as hollow columnar, and the push rod is set in the upper pen cap, sets on the pushing rod sleeve
There is card slot that is multiple axially extending along its and being circumferentially spaced arrangement；
The outside wall surface of push rod, the push rod is equipped with multiple buckles corresponding with the card slot, and the push rod is located at the push rod
In set and only to the upper pen cap lid, at least part of the push rod protrudes into the lower pen cap；
Inserting needle spring, the inserting needle spring are located at one end of the neighbouring upper pen cap lid of the push rod by the inserting needle spring
Drive the push rod movable in the axial direction of the upper pen cap and the lower pen cap.
3. the injection device according to claim 2 for pre-encapsulated injector, which is characterized in that the push rod includes:
First body of rod and second body of rod, the buckle are located on first body of rod, and the inserting needle spring is located at first bar
In vivo, first body of rod is coaxially connected with second body of rod and the radial dimension of first body of rod is greater than second bar
The radial dimension of body, the axial dimension of first body of rod are less than the axial dimension of second body of rod.
4. the injection device according to claim 3 for pre-encapsulated injector, which is characterized in that first body of rod
One end is additionally provided with along its axially extending hook, and the center of the upper pen cap lid is equipped with along its axially extending lug boss,
The hook is matched with the lug boss tight against the upper pen cap lid.
5. the injection device according to claim 1 for pre-encapsulated injector, which is characterized in that the pen core includes:
Pen core ontology defines chamber in the pen core ontology, and the pen core ontology is located in the lower pen cap；
Syringe needle, the syringe needle are located at one end of the pen core ontology and stretch out the lower pen cap, and hidden needle assemblies are located at the syringe needle
On.
6. the injection device according to claim 5 for pre-encapsulated injector, which is characterized in that the hidden needle assemblies packet
It includes:
Hidden needle, the hidden needle are located on the syringe needle；
Hidden needle spring, the hidden needle spring are located in the hidden needle and drive the hidden needle described by the hidden needle spring
It is movable in the axial direction of the lower pen cap.
7. the injection device according to claim 6 for pre-encapsulated injector, which is characterized in that the hidden needle packet
It includes:
First hidden needle ontology defines guide channel on the first hidden needle ontology, and the syringe needle is located at the described first hidden needle sheet
On body, it is additionally provided on the push rod along the outwardly projecting convex ribs of its outside wall surface, the convex ribs drive the hidden needle to turn from lock set
It is dynamic movable to limit the described first hidden needle ontology from lock set by the hidden needle；
Second hidden needle ontology, the second hidden needle ontology are formed as the hollow columnar being connected to the described first hidden needle ontology.
8. the injection device according to claim 7 for pre-encapsulated injector, which is characterized in that described to be used for pre- encapsulating
The injection device of syringe further include:
Pen core cap, the pen core cap sleeve is located on the syringe needle and the pen core cap is located in the described first hidden needle ontology, described
The outside wall surface of pen core cap is equipped with along its groove axially extending and in circumferentially spaced arrangement；
It starts writing upper shield, the upper shield of starting writing is connected with the lower pen cap, and the upper shield of starting writing is formed as hollow columnar and described hidden
Needle assemblies are movable in the axial direction of the upper shield of starting writing；
End cap, the end cap are formed as hollow columnar, the end cap be equipped with along its it is axially extending pull out hook, it is described to pull out hook and institute
It is corresponding to pull out the pen core cap by the hook that pulls out to state groove.
9. the injection device according to claim 7 for pre-encapsulated injector, which is characterized in that self-locking group of the hidden needle
Part includes:
Retainer plate, the retainer plate are formed as column, and the retainer plate is located on the push rod；
Hidden needle self-locking spring, the hidden needle self-locking spring are located on the retainer plate；
Two hidden needle self-locking rings, two hidden needle self-locking rings are sequentially arranged on the hidden needle self-locking spring, and the hidden needle is self-locking
Circle is equipped with along its axially extending guiding rib, and the guiding rib is matched with the guide channel.
10. the injection device according to claim 1 for pre-encapsulated injector, which is characterized in that described to be used for inoculated
Seal the injection device of syringe further include:
Pen cap connector, the pen cap connector are formed as hollow columnar, the pen cap connector be located at the upper pen cap and the lower pen cap it
Between to connect the upper pen cap and the lower pen cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821608050.8U CN209575432U (en) | 2018-09-30 | 2018-09-30 | Injection device for pre-encapsulated injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821608050.8U CN209575432U (en) | 2018-09-30 | 2018-09-30 | Injection device for pre-encapsulated injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209575432U true CN209575432U (en) | 2019-11-05 |
Family
ID=68373353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821608050.8U Withdrawn - After Issue CN209575432U (en) | 2018-09-30 | 2018-09-30 | Injection device for pre-encapsulated injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209575432U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109078242A (en) * | 2018-09-30 | 2018-12-25 | 江苏德尔福医疗器械有限公司 | Injection device for pre-encapsulated injector |
| CN116764035A (en) * | 2023-08-16 | 2023-09-19 | 苏州嘉树医疗科技有限公司 | Epinephrine automatic injection device of single dose area secondary emission |
-
2018
- 2018-09-30 CN CN201821608050.8U patent/CN209575432U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109078242A (en) * | 2018-09-30 | 2018-12-25 | 江苏德尔福医疗器械有限公司 | Injection device for pre-encapsulated injector |
| CN109078242B (en) * | 2018-09-30 | 2024-05-14 | 江苏德尔福医疗器械有限公司 | Injection device for prefilled syringe |
| CN116764035A (en) * | 2023-08-16 | 2023-09-19 | 苏州嘉树医疗科技有限公司 | Epinephrine automatic injection device of single dose area secondary emission |
| CN116764035B (en) * | 2023-08-16 | 2023-11-21 | 苏州嘉树医疗科技有限公司 | Epinephrine automatic injection device of single dose area secondary emission |
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