CN108371738A - Safe injection of insulin syringe needle - Google Patents
Safe injection of insulin syringe needle Download PDFInfo
- Publication number
- CN108371738A CN108371738A CN201810293879.1A CN201810293879A CN108371738A CN 108371738 A CN108371738 A CN 108371738A CN 201810293879 A CN201810293879 A CN 201810293879A CN 108371738 A CN108371738 A CN 108371738A
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- China
- Prior art keywords
- elastic arm
- needle
- spring
- elastic
- triggering
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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
- A61M5/3293—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 characterised by features of the needle hub
-
- 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
- A61M5/3213—Caps placed axially onto the needle, e.g. equipped with finger protection guards
-
- 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
- A61M5/34—Constructions for connecting the needle, e.g. to syringe nozzle or needle hub
- A61M5/344—Constructions for connecting the needle, e.g. to syringe nozzle or needle hub using additional parts, e.g. clamping rings or collets
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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
A kind of safe injection of insulin syringe needle, including：Needle body, needle stand, middle set, triggering pipe, anterior cannula and spring, it is characterised in that：Elastic arm is set on triggering pipe, lug boss is set on needle stand, the axial relative movement relationship between triggering pipe and needle stand is utilized in use, it touches elastic arm by lug boss and forces elastic arm flexural deformation outward and occupy the front position of spring, so that triggering pipe obtains interim elastic recoil ability between mobile a distance by the elastic force of spring, after lug boss and elastic arm are detached from, the elastic recoil ability of triggering pipe is automatically terminated.This programme solves the problems, such as to use Single spring structure that can not retain the exploratory elastic rollback ability of triggering pipe in the past.
Description
Technical field
The present invention relates to medical injection of insulin tool, more particularly to a kind of safe injection of insulin syringe needle.This injection
Syringe needle and novopen, which match, can be used for automedication or other people are administered, and wherein novopen is reusable, and injects
Syringe needle is disposable syringe needle.
Background technology
Diabetes are a kind of metabolic diseases characterized by hyperglycemia, the method that there is no radical cure at present, but give patient's note
The state of an illness can effectively be controlled by penetrating insulin.
The injection tool of insulin is varied, wherein injection of insulin syringe needle of the present invention is a kind of and insulin
The matching used injection tool of pen, wherein novopen carry the insulin fluid drug of specified amount, reusable, and inject
Syringe needle is a kind of disposable syringe needle with safety guard.
United States Patent (USP) US2011/0257603A1 discloses a kind of entitled《With the shield for patient end and non-patient end
The safe pen needle assemblies of cover》Application for a patent for invention.The patent application is related to injection of insulin syringe needle, wherein Fig. 2-4 displayings
Safe pen needle assemblies shown in Fig. 1 under different use states.It can understand from Fig. 2-4 of the U.S. Patent application
Find out, for the safe pen needle assemblies there are two spring, one is remote spring, for controlling triggering pipe, the other is proximal end
Spring, for controlling rear sleeve.Being designed with the benefit of remote spring is：First, it, can during pushing injection of insulin syringe needle
It is flexible with good control triggering pipe.For example, user wishes to exit again next after pushing one section when, triggering pipe is in remote spring
Can retract reset under effect.Second, after accidentally triggering pipe in use, remote spring can protect needle point by triggering pipe
It is not exposed.But from the point of view of general structure design, after injection of insulin syringe needle is using two springs, necessarily lead to zero of product
Number of packages amount increases, complicated and cost increases.From the perspective of those of ordinary skill in the art, if saving a bullet
Spring, thing must can reduce amount of parts, are conducive to simplify structure and reduce cost.For example, Chinese patent CN104771814A
Disclose one it is entitled《Disposable safe type injection of insulin syringe needle》Application for a patent for invention, the pancreas islet of the patent application case
Only with a spring in plain injection needle, it should be apparent that the side effect brought, which is triggering pipe, is pushing a distance
When lose elastic rollback ability, finally so that this injection of insulin syringe needle using when triggering pipe do not have it is exploratory elasticity return
Move back function.
For this purpose, the angle for safety, convenience and the user experience that the present invention is used from injection of insulin syringe needle is started with,
Strive under the premise of using a spring so that triggering pipe retains exploratory elastic rollback ability.
Invention content
The shortcomings that being pointed out in view of the above prior art, the present invention provide a kind of safe injection of insulin syringe needle, the purpose is to
It solves the problems, such as that using Single spring structure the exploratory elastic rollback ability of triggering pipe can not be retained.
In order to achieve the above objectives, the technical solution adopted by the present invention is：A kind of safe injection of insulin syringe needle, including：
Needle body, there are one the injection portion of the extension of extreme direction forward, a linkage sections and one that extreme direction extends backward for needle body tool
A fixed section between injection portion and linkage section.
Needle stand, for fixing needle body, the fixed section of the needle body is fixed on needle stand the needle stand, and the injection portion of needle body is from needle
Seat front end is stretched out, and the linkage section of needle body is stretched out from needle stand rear end；The needle stand is at least made of seat bar.
Middle set, set is tube structure in this, and the front end of middle set is equipped with through-hole, and the rear end of middle set, which is equipped with, to be used for connecting insulin
The structure of pen.
Triggering pipe, the triggering pipe are used for protecting the injection portion using preceding needle body, and the agent structure for triggering pipe is tube body.
Anterior cannula, the anterior cannula are used for protecting the injection portion using rear needle body, and the agent structure of anterior cannula is tube body, protheca
The leading inside of pipe is equipped with inner face.
Spring, the spring at least are used for pushing to anterior cannula the protective position of needle body injection portion.
Under using preceding assembled state, the needle stand is located in middle set, and phase centered cover positions.
Under using preceding assembled state, the triggering pipe rear portion is stretched into middle set, and is sleeved on the seat bar of needle stand, triggering
Pipe front therefrom covers to be stretched out in the through-hole of front end, for protecting the injection portion using preceding needle body, triggering pipe relatively in be arranged it is oriented
The limit of preceding movement.
Under using preceding assembled state, the anterior cannula is inserted between middle set and triggering pipe, and in middle set；It is described
Spring is inserted between anterior cannula and triggering pipe, and in middle set, spring rear end relative positioning, spring at front end is resisted against protheca
On the inner face of pipe.
Its innovation is：The needle stand seat bar side portion is equipped with lug boss；The corresponding lug boss is opened on the tube wall of triggering pipe
Equipped with window, it is equipped with elastic arm in window, elastic arm is formed by the extended structure of triggering tube wall.
The arm end suspension of the elastic arm in the window, is equipped with block face, in elastic arm on arm end corresponding to the front end of spring
Side, which corresponds to lug boss and is equipped with by recessed portion or elastic arm to be equipped with, allows bit space.
When being equipped with for elastic arm flexural deformation outward corresponding to the position of elastic arm on the inner face of the anterior cannula
The notch passed through.
Using under preceding assembled state, elastic arm arm end is presented axially in the front of spring, on anterior cannula inner face
Notch is axially toward the orientation at elastic arm arm end.
In a state of use, when opposite needle stand is managed in triggering to be moved axially backward, the lug boss on seat bar touches elastic arm
And elastic arm flexural deformation outward is forced, cause the block face on elastic arm arm end to occupy the front position of spring at front end, elasticity
Arm arm end passes through the notch on anterior cannula inner face, forms elastical retraction state by block face contact and compressed spring, is returned in elasticity
If retracting the injection of insulin syringe needle under contracting state, elastic recoil under the action of the spring is managed in triggering, if continuing to push pancreas
Island element injection needle, when the lug boss on seat bar fall by the recessed portion on the inside of elastic arm or elastic arm allow bit space when,
Elastic arm self-return inwardly, at this time the block face on elastic arm arm end automatically disengage spring and triggering pipe made to automatically terminate elasticity
Return ability.
Related content in above-mentioned technical proposal is explained as follows：
1. " preceding " in the present invention, described " front end ", " forward ", " front ", " front " refers to disposable peace of the invention
The direction of full injection of insulin syringe needle injection portion needle point meaning." rear " in " rear end ", " backward ", " rear portion ", " rear "
It refer to the negative direction of " preceding ".
2. in above-mentioned technical proposal, the quantity of the elastic arm is at least constituted by two, all elastic arm is in triggering Guan Yuan
It is uniformly distributed in circumferential direction.
3. in above-mentioned technical proposal, housing is equipped on the outside of the middle set, which is tube-in-tube structure, for protecting the pancreas
Island element injection needle is whole.
4. can also include the tail-hood for being used for protecting needle body linkage section in above-mentioned technical proposal.
Design principle and effect of the present invention are：The present invention relates to a kind of needs and the matching used disposable peace of novopen
Full injection of insulin syringe needle.In order to solve that using Single spring structure asking for the triggering exploratory elastic rollback ability of pipe can not be retained
Topic, technical concept of the invention are：
First, for spring, window is opened up on the tube wall of triggering pipe, elastic arm is set in window, and elastic arm arm end corresponds to bullet
Block face is arranged in the front position of spring, for keeping out spring.
Second, corresponding elastic arm is equipped with lug boss in needle stand seat bar side portion, which is used for top pressure elastic arm.
Third, lug boss set by respective seat bar side portion are equipped with to be equipped with by recessed portion or elastic arm on the inside of elastic arm and step down
Space, so that elastic arm being capable of elastic recoil.
4th, the position of corresponding elastic arm is equipped with notch on the inner face of anterior cannula, and the notch is outside for elastic arm
Lateral bend passes through anterior cannula inner face when deforming directly is contacted with spring.
In a state of use, when opposite needle stand axial movement is managed in triggering, bullet is touched using lug boss set on seat bar
Property arm and force elastic arm flexural deformation outward, cause the block face on elastic arm arm end to occupy the front position of spring, elasticity
Arm arm end passes through the notch on anterior cannula inner face, forms elastical retraction state by block face contact and compressed spring, is returned in elasticity
If rollback injection of insulin syringe needle under contracting state, elastic recoil under the action of the spring is managed in triggering, if continuing to push insulin
Injection needle, when the lug boss on seat bar fall by the recessed portion on the inside of elastic arm or elastic arm allow bit space when, elasticity
Arm self-return inwardly, at this time the block face on elastic arm arm end automatically disengage spring and triggering pipe made to automatically terminate elastic recoil
Ability.
In short, the present invention from product design angle using the relative motion relation between triggering pipe and needle stand, and before passing through
The upper set elastic arm of person interacts with the upper set lug boss of the latter so that triggering pipe mobile a distance it
Between interim elastic recoil ability is obtained by the elastic force of spring, after lug boss and elastic arm are detached from, automatically terminate tactile
The elastic recoil ability for sending out pipe, the exploratory elastic rollback ability of triggering pipe can not be retained using Single spring structure in the past by solving
Problem.This programme technical concept is ingenious, and design scheme is reasonable, has substantive distinguishing features outstanding and significant technological progress, fills
Divide and embodies the safety and convenience that injection needle uses.
Description of the drawings
Attached drawing 1 is the safe injection of insulin syringe needle stereogram of the embodiment of the present invention；
Attached drawing 2 is the safe injection of insulin syringe needle stereogram exploded view of the embodiment of the present invention；
Attached drawing 3 is tail-hood stereogram of the embodiment of the present invention；
Attached drawing 4 is needle stand stereogram of the embodiment of the present invention；
Attached drawing 5 is needle stand front view of the embodiment of the present invention；
Attached drawing 6 is needle stand vertical view of the embodiment of the present invention；
Attached drawing 7 is block set stereogram in the embodiment of the present invention；
Attached drawing 8 is to cover stereogram in the embodiment of the present invention；
Attached drawing 9 is anterior cannula stereogram of the embodiment of the present invention；
Attached drawing 10 is that the embodiment of the present invention triggers pipe stereogram；
Attached drawing 11 is that the embodiment of the present invention triggers pipe front view；
Attached drawing 12 is that the embodiment of the present invention triggers pipe vertical view；
Attached drawing 13 is triggering pipe right view of the embodiment of the present invention with A-A cross-sectional indicators；
Attached drawing 14 is the A-A sectional views of Figure 13；
Attached drawing 15 is safe insulin injection syringe end surface view of the embodiment of the present invention with B-B cross-sectional indicators；
Attached drawing 16 is before use of the embodiment of the present invention（Original state）B-B sectional views under state；
Attached drawing 17 is the B-B sectional views that the embodiment of the present invention screws under novopen state；
Attached drawing 18 is the B-B sectional views under excision housing state of the embodiment of the present invention；
Attached drawing 19 is the B-B sectional views under state before piercing human skin of the embodiment of the present invention；
Attached drawing 20 is that the embodiment of the present invention has injected B-B sectional view of the insulin needle body after being extracted in skin under state.
In the figures above：
1. tail-hood；11. haptic element hook；12. inclined-plane；13. block；14. wedge angle trip；15. block；16. foreleg；17. relief hole；
2. needle stand；21. lug boss；22. inclined-plane；23. attic base；24. bar；25. recessing groove；
It is covered in 3.；Block set in 31.；32. card slot；33. anti-back slot；
4. anterior cannula；41. elastic latch；42. protrusion；43. elastic empennage；44. inner face；45. inclined surface；46. notch；
5. triggering pipe；51. window；52. elastic arm；53. block face；54. recessed portion；55. plug；
6. needle body；
7. spring；
8. housing；Abutment face in 81..
Specific implementation mode
The invention will be further described with reference to the accompanying drawings and embodiments：
Embodiment 1：A kind of safe injection of insulin syringe needle（The protection of band forward tip and the protection of rear end needle point）
As represented in figures 1 through 14, the injection of insulin syringe needle is by needle body 6, needle stand 2, middle set 3, middle block set 31, housing 8, tail-hood 1, preceding
Casing 4, triggering pipe 5 and spring 7 form（See Fig. 2）.
Each component structural of the present embodiment injection of insulin syringe needle is described in turn below：
1. needle body 6
The needle body 6 is one and is used for insulin injection pipe needle, injection portion that the needle body 6 tool extends there are one extreme direction forward,
One linkage section that extreme direction extends backward and a fixed section between injection portion and linkage section.
2. needle stand 2
The needle stand 2 is for fixing needle body 6（See Fig. 4, Fig. 5 and Fig. 6）, the fixed section of needle body 6 is fixed on needle stand 2, needle body 6
Injection portion is stretched out from 2 front end of needle stand, and the linkage section of needle body 6 is stretched out from 2 rear end of needle stand.Needle stand 2 is made of attic base 23 and seat bar 24,
Seat bar 24 is located at 23 front end of attic base and is fixedly connected with attic base 23, is set on attic base 23 there are two recessing groove 25,23 outer rim of attic base is justified
Circumferential direction is equipped with groove（See that Fig. 4 is not marked）.
Set 3 and middle block set 31 in 3.
The fixed split of both the middle set 3 and middle block set 31 suit is integral（See Fig. 7 and Fig. 8）, the entirety is in insulin injection
Pipe needle is equivalent to main casing, for accommodate except housing 8 and in addition to other parts（See Figure 16）.The middle set 3 is tube structure,
The front end of middle set 3 is equipped with through-hole, and middle block set 31 is that tube structure is mounted in the rear end of middle set 3, and middle block set 31, which is equipped with, to be used for
Connect the structure of novopen.3 cylinder inboard wall fronts of middle set are equipped with anti-back slot 33（See Figure 16 and Figure 20）.On 31 inner edge of middle block set
Equipped with card slot 32（See Figure 16）.Card slot 32 is equipped with the first position location and the second position location in the axial direction, if with middle block set
The distance in face on the basis of 31 rear end face, the first position location to reference plane is less than the second position location to the distance of reference plane.
For connecting novopen, thread connecting mode may be used in connection structure for the rear end of middle block set 31, can also use plug
Connection type can also use plug rotation snap fit etc..In the present embodiment, screw thread is shown in block set 31 in Figure 16
Connection type.
4. housing 8
The housing 8 is for protecting the injection of insulin syringe needle whole（See Figure 16）.The oversheath 8 is tube-in-tube structure, housing 8
Leading inside be equipped with interior abutment face 81.
5. tail-hood 1
Linkage section of the tail-hood 1 after the injection of insulin syringe needle use for protecting needle body 6.Tail-hood 1 is by a block
15 and two forelegs 16 form, block 15 is end cap or ring bodies, and the center of block 15, which is equipped with, only interts for 6 linkage section of needle body
It allowing pin hole 17, makes 17 axis of pin hole parallel with 3 axis of main casing, two forelegs 16 are fixedly connected on 15 front end of block, and
It is arranged symmetrically on the basis of 17 axis of pin hole by allowing, the inside of each foreleg 16 is equipped with inclined-plane 12 on root position, at middle position
It sets equipped with the block 13 to extend internally, haptic element hook 11 is equipped on terminal position.The outside of each foreleg 16 is in medium position
It is equipped with wedge angle trip 14.
6. anterior cannula 4
The anterior cannula 4 is used for protecting the injection portion using rear needle body 6（See Figure 20）.The agent structure of anterior cannula 4 is tube body, preceding
The leading inside of casing 4 is equipped with inner face 44.The rear end of anterior cannula 4 is equipped with the elastic latch 41 that extends back and extends back
Elastic empennage 43, elastic latch 41 are circumferentially staggeredly arranged with elastic empennage 43 in anterior cannula 4.It is equipped on the outside of the middle part of anterior cannula 4
Outwardly extending raised 42, protrusion 42 and elastic latch 41 are corresponded in 4 circumferential position of anterior cannula, and protrusion 42 leans on elastic latch 41 1
Side is equipped with inclined surface 45.
7. triggering pipe 5
The triggering pipe 5 is used for protecting the injection portion using preceding needle body 6（See Figure 16）.The agent structure for triggering pipe 5 is tube body, is touched
The rear end of hair pipe 5 is equipped with two plugs 55 to extend back, and plug 55 is equipped with barb.
8. spring 7
The spring 7 is used for pushing to the protective position of 6 injection portion of needle body and tail-hood 1 being pushed to needle body 6 anterior cannula 4 connecting
Connect the protective position of section.
Above zero connection and position relationship under using preceding assembled state is described below：
1. under using preceding assembled state, housing 8 is sleeved on 3 outside of middle set, for protecting the injection of insulin syringe needle whole,
The front end of the triggering pipe 5 is resisted against on the interior abutment face 81 of housing 8.
2. using under preceding assembled state, the needle stand 2 is located in middle set 3, the attic base 23 of needle stand 2 edge in middle block set 31
Slide axially location fit, and middle block set 31 has the first position location and the second sprocket bit with respect to attic base 23 in glide direction
It sets, is in using preceding attic base 23 on first position location of middle block set 31.
3. under using preceding assembled state, 5 rear portion of triggering pipe is stretched into middle set 3, and is sleeved on the seat bar 24 of needle stand 2
On, triggering pipe 5 front therefrom covers to be stretched out in the through-holes of 3 front ends, for protecting the injection portion using preceding needle body 6, triggering pipe 5 opposite
Middle set 3 is equipped with the limit moved forward.
4. under using preceding assembled state, the anterior cannula 4 is inserted between middle set 3 and triggering pipe 5, and positioned at middle set 3
It is interior.The spring 7 is inserted between anterior cannula 4 and triggering pipe 5, and in middle set 3,7 rear end relative positioning of spring, spring 7
Front end is resisted against on the inner face 44 of anterior cannula 4；
It is described below to solve present invention problem（It uses Single spring structure that can not retain the exploratory elasticity of triggering pipe to retract
The problem of ability.）Required structure feature：
1. being equipped with lug boss 21 in 2 24 sides of bar of needle stand, lug boss 21 is equipped with inclined-plane 22（See Fig. 4 and Fig. 5）.
2. correspond to the lug boss 21 offers window 51 on the tube wall of triggering pipe 5, elastic arm 52, bullet are equipped in window 51
Property arm 52 is formed by the extended structure of 5 tube wall of triggering pipe（See Figure 10）.The quantity of the elastic arm 52 is constituted by two, two bullets
Property arm 52 triggering 5 circumferencial direction of pipe on be uniformly distributed.
3. the arm end of the elastic arm 52 is suspended in window 51, block face 53 is equipped with corresponding to the front end of spring 7 on arm end
（See Figure 10）, 52 inside of elastic arm corresponds to lug boss 21 and is equipped with recessed portion 54（See Figure 16, Figure 17 and Figure 18）.
4. being equipped with for 52 outside lateral bend of elastic arm corresponding to the position of elastic arm 52 on the inner face 44 of anterior cannula 4
The notch 46 passed through when deformation（See Figure 18, Figure 19 and Figure 20）.
Connection relation and position relationship of the necessary structure technology feature under using preceding assembled state are described below：
Under using preceding assembled state, on the basis of triggering 5 outer rim of pipe, spring 7 is located at the outside of triggering 5 outer rim of pipe, elastic arm
52 arm ends are located at the inside of triggering 5 outer rim of pipe, and 52 arm end of elastic arm is presented axially in the front of spring 7,4 inner face of anterior cannula
Notch 46 on 44 is axially toward the orientation at 52 arm end of elastic arm, and the lug boss 21 on seat bar 24 is presented axially in elasticity
The rear at 52 arm end of arm.
The present embodiment is described below and uses process：
1. original state
Figure 16 indicates the original state before use of the embodiment of the present invention.As can be seen from Figure 16, in this case, pipe 5 is triggered
On elastic arm 52 be in nature, the inclined-plane 22 of the lug boss 21 on needle stand 2 is close to the arm end of elastic arm 52.
2. screwing in novopen state
Figure 17 indicates that the embodiment of the present invention screws in novopen state.As can be seen from Figure 17, in this case, work as insulin
During pen slowly screws in when block set 31, push the attic base 23 on tail-hood 1 and needle stand 2 in middle block set 31 from the first position location forward
It is moved to the second position location.Since needle stand 2 moves forward in middle set 3（Interior abutment face 81 of the triggering pipe 5 by housing 8 at this time
It limits opposing stationary）, at this time lug boss 21 on seat bar 24 touch elastic arm 52 and force the flexural deformation outward of elastic arm 52,
The block face 53 on 52 arm end of elastic arm is caused to occupy the front position of 7 front end of spring.
3. extracing housing state
Figure 18 indicates that the embodiment of the present invention extracts housing state.As can be seen from Figure 18, housing has been picked-off, in this case
When triggering pipe 5 touches injection site, triggering pipe 5 is moved backward with respect to anterior cannula 4, and 52 arm end of elastic arm passes through in anterior cannula 4
Notch 46 on end face 44 forms elastical retraction state by the contact of block face 53 and compressed spring 7.Under elastical retraction state if
Retract the injection of insulin syringe needle, triggering pipe 5 elastic recoil under the effect of spring 7.
4. being pierced into state before human skin
Figure 19 indicates that the embodiment of the present invention is pierced into state before human skin.As can be seen from Figure 19, in this case, if after
Continuous push injection of insulin syringe needle, when the lug boss 21 on seat bar 24 falls into the recessed portion 54 of 52 inside of elastic arm, elastic arm
52 self-returns inwardly, at this time the block face 53 on 52 arm end of elastic arm automatically disengage spring 7 and triggering pipe 5 made to automatically terminate bullet
Property return ability.
5. having injected insulin needle body state after being extracted in skin
Figure 20 indicates that the embodiment of the present invention has injected insulin needle body state after being extracted in skin.It can be seen in figure 20 that
In this case, triggering pipe 5 is retracted into middle set 3, and anterior cannula 4 is in front-end protection position under the promotion of spring 7, for protecting
Protect the injection portion of needle body 6.
Embodiment 2：Safe injection of insulin syringe needle（Band forward tip is protected, and is protected without rear end needle point）
The injection of insulin syringe needle is by needle body 6, needle stand 2, middle set 3, middle block set 31, housing 8, anterior cannula 4, triggering pipe 5 and bullet
Spring 7.
Embodiment 2 difference from example 1 is that：Tail-hood 1 is eliminated, forward tip is only carried and protects structure, no
Structure is protected with rear end needle point.It is other substantially the same manner as Example 1, description is not repeated herein.
Related content and variation in above example are described as follows：
1. in both examples above, middle set 3 and middle block set 31 are separate structure, are then integrated by combined set change, this
The considerations of design of sample is for processing technology.From the point of view of structure and construction, middle set 3 and middle block set 31 can be structure as a whole
Design, nor affect on the present invention technique effect, this be the skilled addressee will appreciate that.
2. in both examples above, in order to make elastic arm 52 after occuring bending and deformation outward, can be in due course
Self-return, the lug boss 21 on 52 inside respective seat bar 24 of elastic arm are designed with recessed portion 54, are triggering inwardly for generation
During pipe 5 moves backward, when the lug boss 21 on seat bar 24 falls into the recessed portion 54 of the inside of elastic arm 52, elastic arm 52 to
Inside self-return, at this time the block face 53 on 52 arm end of elastic arm automatically disengage spring 7 and make triggering pipe 5 automatically terminate elasticity return
Capability.For the present invention, corresponding to lug boss 21 in 52 inside of elastic arm can change into equipped with recessed portion 54 in elasticity
The side of arm 52, which is equipped with, allows bit space, is equally reached goal of the invention, realizes identical technique effect, this is those skilled in the art
Intelligible variation.
3. in both examples above, the quantity of the elastic arm 52 is constituted by two, but not limited to this, bullet of the invention
Property arm 52 quantity can be designed to three, four, five, even more, all elastic arm 52 is on triggering 5 circumferencial direction of pipe
It is uniformly distributed.This is the skilled addressee will appreciate that variation.
4. in both examples above, in novopen slowly screws in when block set 31, pushing on tail-hood 1 and needle stand 2
Attic base 23 moves forward to the second position location in middle block set 31 from the first position location.I.e. in the process for screwing in novopen
In, push the seat bar 24 of needle stand 2 to move forward using novopen action is screwed in, and touched by the lug boss 21 on seat bar 24
It touches elastic arm 52 and forces the flexural deformation outward of elastic arm 52, before causing the block face 53 on 52 arm end of elastic arm to occupy spring 7
The front position at end.It is this not to be necessary using 2 phase centered cover 3 of needle stand and the axial movement of middle block set 31, as long as lug boss 21
It is in appropriate location relative to 7 front end of spring, mobile triggering pipe 5, lug boss 21 can equally touch elastic arm 52 immediately rearward
And force the flexural deformation outward of elastic arm 52.Thus, 2 phase centered cover 3 of needle stand and middle block set 31 axially have first to determine
The design that position position and the second position location are not necessarily to for purposes of the invention.
It, can not using Single spring structure for solution 5. emphasis of the embodiment of the present invention describes in safe injection of insulin syringe needle
Retain the problem of exploratory elastic rollback ability is managed in triggering involved structure and connection relation.The related safe insulin of the present invention
Injection needle other structures and connection relation are referred to interior disclosed in the Chinese patent CN104771814A described in background
Hold.
The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow person skilled in the art
Scholar cans understand the content of the present invention and implement it accordingly, and it is not intended to limit the scope of the present invention.It is all according to the present invention
Equivalent change or modification made by Spirit Essence, should be covered by the protection scope of the present invention.
Claims (6)
1. a kind of safe injection of insulin syringe needle, including：
Needle body（6）, the needle body（6）There are one the injection portion of the extension of extreme direction forward, a connections that extreme direction extends backward for tool
Section and a fixed section between injection portion and linkage section；
Needle stand（2）, the needle stand（2）For fixing needle body（6）, the needle body（6）Fixed section be fixed on needle stand（2）On, needle body
（6）Injection portion from needle stand（2）Front end is stretched out, needle body（6）Linkage section from needle stand（2）Rear end is stretched out；The needle stand（2）At least
By seat bar（24）It constitutes；
Middle set（3）, cover in this（3）For tube structure, middle set（3）Front end be equipped with through-hole, middle set（3）Rear end be equipped be used for connect
Connect the structure of novopen；
Triggering pipe（5）, the triggering pipe（5）Preceding needle body is used for protecting（6）Injection portion, triggering pipe（5）Agent structure be
Tube body；
Anterior cannula（4）, the anterior cannula（4）Rear needle body is used for protecting（6）Injection portion, anterior cannula（4）Agent structure be
Tube body, anterior cannula（4）Leading inside be equipped with inner face（44）；
Spring（7）, the spring（7）At least it is used for anterior cannula（4）Push to needle body（6）The protective position of injection portion；
Under using preceding assembled state, the needle stand（2）Positioned at middle set（3）It is interior, and phase centered cover（3）Positioning；
Under using preceding assembled state, the triggering pipe（5）Middle set is stretched at rear portion（3）It is interior, and it is sleeved on needle stand（2）Seat bar
（24）On, triggering pipe（5）Front therefrom covers（3）It is stretched out in the through-hole of front end, preceding needle body is used for protecting（6）Injection portion,
Triggering pipe（5）Phase centered cover（3）Limit equipped with forward movement；
Under using preceding assembled state, the anterior cannula（4）It is inserted into middle set（3）It is managed with triggering（5）Between, and it is located at middle set
（3）It is interior；The spring（7）It is inserted into anterior cannula（4）It is managed with triggering（5）Between, and it is located at middle set（3）It is interior, spring（7）Rear end phase
To positioning, spring（7）Front end is resisted against anterior cannula（4）Inner face（44）On；
It is characterized in that：The needle stand（2）Seat bar（24）Side is equipped with lug boss（21）；The corresponding lug boss（21）It is managed in triggering
（5）Tube wall on offer window（51）, window（51）In be equipped with elastic arm（52）, elastic arm（52）It is managed by triggering（5）Tube wall
Extended structure formed；
The elastic arm（52）Arm end be suspended at window（51）In, spring is corresponded on arm end（7）Front end be equipped with block face
（53）, elastic arm（52）Inside corresponds to lug boss（21）Equipped with recessed portion（54）Or elastic arm（52）Side is equipped with sky of stepping down
Between；
The anterior cannula（4）Inner face（44）It is upper to correspond to elastic arm（52）Position be equipped with for elastic arm（52）Outward
The notch passed through when flexural deformation（46）；
Under using preceding assembled state, elastic arm（52）Arm end is presented axially in spring（7）Front, anterior cannula（4）Inner end
Face（44）On notch（46）It is axially toward elastic arm（52）The orientation at arm end；
In a state of use, when triggering is managed（5）Opposite needle stand（2）When moving axially backward, seat bar（24）On lug boss（21）
Touch elastic arm（52）And force elastic arm（52）Flexural deformation outward causes elastic arm（52）Block face on arm end（53）It accounts for
According to spring（7）The front position of front end, elastic arm（52）Arm end passes through anterior cannula（4）Inner face（44）On notch（46）, by
Block face（53）Contact simultaneously compressed spring（7）Elastical retraction state is formed, if retracting the insulin under elastical retraction state
Injection needle, triggering pipe（5）In spring（7）The lower elastic recoil of effect, if continuing to push injection of insulin syringe needle, when seat bar
（24）On lug boss（21）Fall into elastic arm（52）The recessed portion of inside（54）Or elastic arm（52）It is other allow bit space when,
Elastic arm（52）Self-return inwardly, at this time elastic arm（52）Block face on arm end（53）Automatically disengage spring（7）And make to touch
Hair pipe（5）Automatically terminate elastic recoil ability.
2. safe injection of insulin syringe needle according to claim 1, it is characterised in that：The elastic arm（52）Quantity extremely
It is few to be constituted by two, all elastic arm（52）It is managed in triggering（5）It is uniformly distributed on circumferencial direction.
3. safe injection of insulin syringe needle according to claim 1, it is characterised in that：The middle set（3）Outside is equipped with outer
Set（8）, the housing（8）For tube-in-tube structure, housing（8）Leading inside be equipped with interior abutment face（81）；Using preceding assembled state
Under, housing（8）It is sleeved on middle set（3）Outside, for protecting the injection of insulin syringe needle whole, the triggering pipe（5）Before
End is resisted against housing（8）Interior abutment face（81）On.
4. safe injection of insulin syringe needle according to claim 1, it is characterised in that：The triggering pipe（5）Rear end set
There are two plugs to extend back（55）, plug（55）It is equipped with barb.
5. safe injection of insulin syringe needle according to claim 1, it is characterised in that：The anterior cannula（4）Rear end set
There is the elastic latch to extend back（41）With the elastic empennage to extend back（43）, elastic latch（41）With elastic empennage（43）
Anterior cannula（4）Circumferentially it is staggeredly arranged；Anterior cannula（4）Middle part on the outside of protrusion with outward extension（42）, protrusion（42）And bullet
Property trip（41）In anterior cannula（4）Circumferential position corresponds to, protrusion（42）By elastic latch（41）Side is equipped with inclined surface（45）.
6. safe injection of insulin syringe needle according to claim 1, it is characterised in that：Including for protecting needle body（6）Even
Connect the tail-hood of section（1）, the tail-hood（1）By a block（15）With two forelegs（16）Composition, block（15）For end cap or ring-type
Body, block（15）Center be equipped with only for needle body（6）Linkage section it is interspersed allow pin hole（17）, allow pin hole（17）Axis and middle set
（3）Axis is parallel, two forelegs（16）It is fixedly connected on block（15）On, and to allow pin hole（17）Symmetrical cloth on the basis of axis
It sets, each foreleg（16）Inside on root position be equipped with inclined-plane（12）, the block to extend internally is equipped on medium position
（13）, haptic element hook is equipped on terminal position（11）；Each foreleg（16）Outside on medium position be equipped with wedge angle trip
（14）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810293879.1A CN108371738B (en) | 2018-04-04 | 2018-04-04 | Safety insulin injection needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810293879.1A CN108371738B (en) | 2018-04-04 | 2018-04-04 | Safety insulin injection needle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108371738A true CN108371738A (en) | 2018-08-07 |
| CN108371738B CN108371738B (en) | 2020-08-11 |
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ID=63031867
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810293879.1A Active CN108371738B (en) | 2018-04-04 | 2018-04-04 | Safety insulin injection needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108371738B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109718429A (en) * | 2019-02-15 | 2019-05-07 | 贝普医疗科技有限公司 | A kind of safe insulin needle |
| CN110141733A (en) * | 2019-05-10 | 2019-08-20 | 山东连发医用塑胶制品有限公司 | A kind of safe injection of insulin syringe needle |
| CN110548202A (en) * | 2019-08-20 | 2019-12-10 | 山东连发医用塑胶制品有限公司 | Safe adjustable insulin syringe needle |
-
2018
- 2018-04-04 CN CN201810293879.1A patent/CN108371738B/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109718429A (en) * | 2019-02-15 | 2019-05-07 | 贝普医疗科技有限公司 | A kind of safe insulin needle |
| WO2020164382A1 (en) * | 2019-02-15 | 2020-08-20 | 贝普医疗科技有限公司 | Safe insulin needle |
| KR20210128419A (en) * | 2019-02-15 | 2021-10-26 | 버르푸 메디컬 테크놀로지 컴퍼니 리미티드 | Safe insulin needle |
| KR102610898B1 (en) | 2019-02-15 | 2023-12-06 | 버르푸 메디컬 테크놀로지 컴퍼니 리미티드 | Safe insulin needle |
| CN109718429B (en) * | 2019-02-15 | 2024-01-16 | 贝普医疗科技股份有限公司 | Safety insulin needle |
| CN110141733A (en) * | 2019-05-10 | 2019-08-20 | 山东连发医用塑胶制品有限公司 | A kind of safe injection of insulin syringe needle |
| CN110548202A (en) * | 2019-08-20 | 2019-12-10 | 山东连发医用塑胶制品有限公司 | Safe adjustable insulin syringe needle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108371738B (en) | 2020-08-11 |
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