CN107007289B - Rear pressure type disposable blood taking device with spring correcting structure - Google Patents
Rear pressure type disposable blood taking device with spring correcting structure Download PDFInfo
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- CN107007289B CN107007289B CN201710376735.8A CN201710376735A CN107007289B CN 107007289 B CN107007289 B CN 107007289B CN 201710376735 A CN201710376735 A CN 201710376735A CN 107007289 B CN107007289 B CN 107007289B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/151—Devices specially adapted for taking samples of capillary blood, e.g. by lancets, needles or blades
- A61B5/15186—Devices loaded with a single lancet, i.e. a single lancet with or without a casing is loaded into a reusable drive device and then discarded after use; drive devices reloadable for multiple use
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150175—Adjustment of penetration depth
- A61B5/15019—Depth adjustment mechanism using movable stops located inside the piercing device housing and limiting the travel of the drive mechanism
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/151—Devices specially adapted for taking samples of capillary blood, e.g. by lancets, needles or blades
- A61B5/15101—Details
- A61B5/15103—Piercing procedure
- A61B5/15107—Piercing being assisted by a triggering mechanism
- A61B5/15109—Fully automatically triggered, i.e. the triggering does not require a deliberate action by the user, e.g. by contact with the patient's skin
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/151—Devices specially adapted for taking samples of capillary blood, e.g. by lancets, needles or blades
- A61B5/15101—Details
- A61B5/15115—Driving means for propelling the piercing element to pierce the skin, e.g. comprising mechanisms based on shape memory alloys, magnetism, solenoids, piezoelectric effect, biased elements, resilient elements, vacuum or compressed fluids
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- Heart & Thoracic Surgery (AREA)
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- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Abstract
A kind of rear pressure type disposable blood taking device with spring correcting structure, including shell, needle core, spring and tail-hood；It is characterized by: being equipped with correcting structure in spring outwards, correcting structure is fixed on tail-hood, makes the resilient force of spring on the direction of ejection of needle core；Locking mechanism elastic clip as set by shell is cooperatively formed with needle core；Unlocking mechanism is cooperatively formed with elastic clip end by unlocking inclined-plane by correcting structure front；Tail-hood is pressed when use, correcting structure front forces elastic clip end laterally to be opened in the case where unlocking ramp effect, and needle core emits puncture under the action of the spring after grab is detached from locking critical point.This programme associates spring correcting structure with unlocking mechanism, cleverly generates two kinds of effects using a structure, realizes correcting and unlock double effects, had both reduced needle point shake, and had in turn simplified structure, reduce costs.
Description
Technical field
The present invention relates to medical blood taking instrument field, in particular to a kind of included ejection mechanism and with spring correcting structure
The disposable safe hemostix of pressure type (or blood taking needle) afterwards.The feature of this hemostix maximum is can to reduce needle point to tremble
It is dynamic, feeling of pain is reduced, painless or hypodynia feeling is given.
Background technique
In medical blood taking field, disposable blood taking device is small in size with its, is cured deeply using safe, easy to operate for characteristic
Shield personnel and patient welcome, and largely use in each medical institutions and diabetic at present.The included ejection of this hemostix
Mechanism, compact-sized, overall time uses, safe and convenient, therefore has stronger market development potential.
With the development in market, the type and form of disposable medical hemostix product are varied at present, but from product
From the point of view of design angle, a kind of most important condition of hemostix product quality is measured, the shooting puncture resistance of its blood taking needle should be investigated,
In, the size that needle point is shaken when puncturing human skin is important one of index, it is not only related to the blood sampling effect of needle point,
More importantly directly affect the feeling of pain of puncture.Especially today's society, hemostix safety and user's body in use
Test the element for having gone up and considering for emphasis in product design.For hemostix product prevents needle point from shaking, theoretically see, shadow
There are many factor for ringing needle point shake, for example needle core shoots guide frame, needle core locking structure, needle core trigger architecture, spring performance
Etc..However considering in previous existing design is at most oriented to the shooting of needle core, that is, is used and opened up guide chute
Mode guide needle core to shoot, to reduce shake when needle point punctures, and have ignored the influence of other factors.
On the other hand, it is received by the market and mature hemostix product will not only have good puncture as a kind of
Shooting performance and reliability, while it is simple also to have a structure, is convenient for industrialized mass production, the low feature of manufacturing cost.
Therefore, in prior art basis, needle point shake how is reduced, fully considers user experience, while simplifying structure design, is reduced
Manufacturing cost is Medical blood collecting device product developing direction from now on and the dual problem that those skilled in the art face.
Summary of the invention
In view of the above problem of the existing technology, it is disposable that the present invention provides a kind of rear pressure type with spring correcting structure
Hemostix, the first purpose are to solve the problems, such as stabilization when above-mentioned hemostix needle point punctures, and the second purpose is to solve to simplify
Structure, the problem of reducing cost.
In order to achieve the above objectives, the technical solution adopted by the present invention is that: a kind of rear pressure type with spring correcting structure is primary
Property hemostix, including shell, needle core, spring and tail-hood.
The shell forms an ejection chamber, and by locking mechanism position and lock in ejection chamber, spring at front end acts on needle core
On needle core, needle core and shell are slidably connected on needle point direction of ejection by sliding slot guiding.
The tail-hood is mounted on shell tail portion, and is slidably connected on needle point direction of ejection with shell, tail-hood and locking machine
Structure cooperatively forms unlocking mechanism, so as to form tail portion push-press type emitting structural.
Its innovation is: being equipped with the correcting structure for righting for the spring, which is located on tail-hood simultaneously
It protrudes into shell；The correcting structure is made of at least three correcting items, is perhaps made of or at least two correcting pieces by one
A pilot is constituted, and pilot or all correcting items or all correcting pieces are arranged simultaneously in the periphery of spring circumferentially around spring
And the correcting channel of a restricted spring is formed, spring is located in the correcting channel, launches the resilient force of spring in needle point
On direction, spring rear end is acted on correcting structure or tail-hood.
The locking mechanism is cooperatively formed by shell and needle core, wherein is extended in shell and is equipped at least one elastic arm, bullet
Property arm be equipped with and be used to lock grab or the end face of needle core, all elastic arm be collectively formed an elastic clip or elastic arm with
One of outer casing inner wall and correcting structure inner wall cooperatively form an elastic clip, and needle core is clamped position and lock in elastic clip
In, so as to form the locking mechanism.
The unlocking mechanism is cooperatively formed by correcting structure and elastic arm, wherein after correcting structure forward face is to elastic arm
Portion's setting, in both correcting structure front and elastic arm rear portion, at least one is equipped with unlock inclined-plane.
In a state of use, when tail-hood is pushed, tail-hood moves forward inside the shell, and correcting structure front meets bullet head-on
Property arm rear portion, and force elastic arm end laterally to be opened under the action of unlocking inclined-plane, when on elastic arm grab or end face it is de-
Emit puncture under the action of the spring from needle core after locking critical point.
The related content and change interpretation of above-mentioned technical proposal are as follows:
1. in above scheme, " shell ", " needle core ", " spring " and " tail-hood " is tail portion push type disposable blood taking device
Basic structure, basic function and effect are the prior art.
2. in above scheme, " preceding " in " front end " and " front " refers to needle point direction in hemostix.It is described
" rear " in " rear end " and " rear portion " refers to the opposite direction of " preceding ".
3. in above scheme, " locking mechanism " refers to that hemostix is used to lock the knot of needle core under state before transmission
Structure." unlocking mechanism " refers to that hemostix is used to trigger in a state of use the structure of needle core ejection.
4. in above scheme, how " inclined-plane " in " the unlock inclined-plane " includes plane, cambered surface or the conical surface, however,
Opposite hemostix axis is obliquely installed, to constitute inclined-plane.In other words, inclined-plane has inclined-plane, the concave form of plane form
(inclined-plane is in an inclined direction made of multistage straight line, is upwardly formed concave surface or convex surface in vertical tilt side, but essence is also on inclined-plane
Inclined-plane), (inclined-plane is in an inclined direction by least one section of concave arc or/and convex for the inclined-plane of the inclined-plane of conical surface form and cambered surface form
Arc is constituted, but essence or inclined-plane) four seed types.It is any in the present invention applicable, it specifically can be according to the actual situation
To determine.Wherein, the first is the inclined-plane of plane form；It is for second the inclined-plane of concave form；The third is conical surface form
Inclined-plane；4th kind be cambered surface form inclined-plane.
5. pressure type disposable blood taking device includes to turn round two kinds of structures of shape for hat and nut cap type after the present invention.I.e. the present invention disposably adopts
Blood device usual situation has protective cap, and the structure type of protective cap can be using torsion shape for hat or nut cap type.This has no effect on
Realize the object of the invention.
Design principle and design of the invention is: in order to reduce needle point shake and simplify structure, reducing cost, the present invention
Using following technical measures: first, it is provided with the correcting structure for being used to restricted spring in spring outwards, passes through correcting knot
Structure can guarantee correcting effect of the spring under assembly, transmitting and retracted state；Second, correcting structure is specifically led by least three
Positive item is constituted, and is perhaps made of at least two correcting pieces or is made of a pilot, and these structures are conducive to simplify
Structure and reduce cost；Third extends in shell by locking mechanism design between shell and needle core and is equipped at least one bullet
Property arm, elastic arm is individually formed an elastic clip or elastic arm and one of shell and correcting structure cooperatively form one
Elastic clip clamps locking needle core using this elastic clip；4th, cleverly utilize correcting structure front and elastic clip end
Movement and cooperation help to realize that needle core unlocks on unlock inclined-plane, i.e., are cleverly associated with spring correcting structure with unlocking mechanism
Get up, generates two effects using a structure, realize correcting and unlock double effects.
Due to the application of the above technical scheme, compared with the prior art, the present invention has the following advantages and effect:
1. the present invention is after spring outwards increase correcting structure, to needle point shake is reduced, reduces and puncture feeling of pain with aobvious
Write effect.Research find to cause the factor of pain in addition to needle point deflection and other than, needle point shake mainly in transmission path (or
It rocks).In previous existing design, in order to reduce shake of the needle point when puncturing, draw only with the mode for opening up guide chute
The shooting of guide pin core, and have ignored spring and have an effect not positive influence.Spring is the dynamical element of needle core transmitting in hemostix, if
Spring torsional deformation in the case where compressing assembled state, then spring is had an effect not just when will lead to transmitting, directly affects needle point when puncture
Shake size and verticality.Causing spring to be had an effect, there are mainly two types of for not positive factor: first is, spring-compressed installation condition
Under, distortion is laterally heaved at middle part；Second is, spring installation positioning is inaccurate.The present invention assembles appearance to spring by correcting structure
State and stress are corrected, so as to guarantee spring in transmitting, retraction and resonant process always in correcting state.
2. it is consistent with stress that the present invention after spring outwards increase correcting structure, can greatly improve spring assembly posture
Property.
3. the present invention is cleverly helped using the movement and cooperation of correcting structure front and elastic clip end on unlock inclined-plane
Get off to realize that needle core unlocks, i.e., spring correcting structure associates with unlocking mechanism, cleverly generates two using a structure
Correcting and unlock double effects are realized in kind effect.
4. correcting structure of the present invention and correcting structure front and elastic clip end cooperate and the unlocking mechanism of formation, both subtracted
Needle point shake is lacked, has in turn simplified structure, has reduced costs.
5. the present invention overcomes the previous prior arts only to consider needle core slide-and-guide, and ignores spring as dynamical element pair
The influence of needle point shake.Needle point shake can be reduced by correcting structure, feeling of pain is reduced, gives painless or hypodynia sense
Feel, therefore there is substantive distinguishing features outstanding and significant progress.
Detailed description of the invention
Fig. 1 is 1 stereogram exploded view of the embodiment of the present invention；
Fig. 2 is 1 needle core of the embodiment of the present invention and torsion cap perspective view；
Fig. 3 is the partial enlarged view of Fig. 2；
Fig. 4 is 1 shell three-dimensional cutaway view of the embodiment of the present invention；
Fig. 5 is 1 tail-hood perspective view of the embodiment of the present invention；
Fig. 6 is the initial assembled state cross-sectional view of the embodiment of the present invention 1；
Fig. 7 is pressing tail-hood state cross-sectional view after 1 removal needle cap of the embodiment of the present invention；
Fig. 8 is 1 Continued depression tail-hood state cross-sectional view of the embodiment of the present invention；
Fig. 9 is the first change programme perspective view of correcting structure in the embodiment of the present invention 1；
Figure 10 is second of change programme perspective view of correcting structure in the embodiment of the present invention 1；
Figure 11 is hemostix perspective view of the embodiment of the present invention 4 with fool proof column；
Figure 12 is the tail-hood perspective view of the embodiment of the present invention 4；
Figure 13 is hemostix cross-sectional view of the embodiment of the present invention 4 with fool proof column；
Figure 14 is hemostix three-dimensional cutaway view of the embodiment of the present invention 4 with fool proof column；
Figure 15 is the embodiment of the present invention 5 with the hemostix perspective view for adjusting header structure；
Figure 16 is the embodiment of the present invention 6 with adjusting header structure stereogram exploded view.
Label declaration in the figures above is as follows:
1. shell；2. needle core；3. spring；4. tail-hood；5. elastic arm；6. grab；7. contractible neck；8. snap-latch surface；9. going out needle
Hole；10. unlocking inclined-plane；11. turning round cap；12. correcting item；13. correcting piece；14. pilot；15. torsional part；16. guard bar；17.
Adjust head；18. fool proof column；19. block.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and embodiments:
A kind of embodiment 1: rear pressure type disposable blood taking device (turning round shape for hat) with spring correcting structure
As Figure 1-Figure 8, the disposable blood taking device by shell 1, turn round cap 11, needle core 2, spring 3 and tail-hood 4 form (see
Fig. 1).
The shell 1 forms an ejection chamber, and by locking mechanism position and lock in ejection chamber, 3 front end of spring acts on needle core 2
On needle core 2, needle core 2 and shell 1 are oriented to the (not shown) that is slidably connected by sliding slot on needle point direction of ejection.
The torsion cap 11 is located at 2 front of needle core, and links into an integrated entity injection molding structure (see Fig. 1 and Fig. 2) with needle core 2,
It may be regarded as a component.Torsion cap 11, which is fixedly connected by torsional part 15 with guard bar 16, constitutes (see figure 2), guard bar 16 and needle core 2
Between be provided with the contractible neck 7 that can be twisted off.In needle core 2 be equipped with steel needle, 16 sets of guard bar on the needle point of steel needle, for protecting
Steel needle.It dials except the needle point of steel needle after torsion cap 11 exposes in 2 front end of needle core, is used to puncture blood collecting.1 head of shell is equipped with needle
Hole 9(is shown in Fig. 4, Fig. 7 and Fig. 8), the maximum outside diameter of the torsional part 15 is greater than the maximum diameter of hole of needle outlet 9, and 16 He of guard bar
Needle core 2 can penetrate assembly from 9 front end of needle outlet.
The tail-hood 4 is mounted on 1 tail portion of shell, and is slidably connected on needle point direction of ejection with shell 1, tail-hood 4 and lock
Determine mechanism and cooperatively form unlocking mechanism, so as to form tail portion push-press type emitting structural.
The present invention is equipped with the correcting structure for righting for the spring 3, which is located on tail-hood 4 and protrudes into
(see Fig. 5, Fig. 6) in shell 1.The correcting structure is made of at least three correcting items 12, and in the present embodiment, correcting structure is real
Border is made of (see figure 5) four correcting items 12, certain five or six roots of sensation correcting item 12 it is also possible, those skilled in the art hold
It is readily understood.All correcting items 12 are logical in the peripheral correcting arranged circumferentially around spring 3 and form a restricted spring 3 of spring 3
Road, spring 3 are located in the correcting channel, make the resilient force of spring 3 on needle point direction of ejection, and 3 rear end of spring acts on
On correcting structure or tail-hood 4.
The locking mechanism is cooperatively formed by shell 1 and needle core 2, wherein is extended to set in shell 1 and be seen there are two elastic arm 5(
Fig. 4), elastic arm 5 is equipped with the grab 6 for being used to lock needle core 2, and the corresponding grab 6 is equipped with snap-latch surface 8(on needle core 2 and sees figure
2 and Fig. 3), an elastic clip is collectively formed in all elastic arm 5, and needle core 2 is clamped to be located in elastic clip, snap-latch surface 8 and grab
6 cooperations, which are used to lock needle core 2(, sees Fig. 6), so as to form the locking mechanism.
The unlocking mechanism is cooperatively formed by correcting structure and elastic arm 5, wherein correcting structure forward face is to elastic arm 5
Rear portion setting, in both 5 rear portions of correcting structure front and elastic arm, at least one is equipped with unlock inclined-plane 10.In this reality
It applies in example, unlock inclined-plane 10 is located at correcting structure front, i.e. 12 front end of correcting item (see Fig. 5-8).Certainly, if inclined-plane will be unlocked
10 are located at 5 rear end of elastic arm, or it is also feasible that unlock inclined-plane 10 is arranged simultaneously in correcting structure front end and 5 rear end of elastic arm
's.
Action process is as follows when the present embodiment uses:
(1) initial assembled state
As shown in fig. 6, entire hemostix is made of shell 1, torsion cap 11, needle core 2, spring 3 and tail-hood 4, wherein spring 3
In preloading condition, before transmission under assembled state, an elastic clip is collectively formed in all elastic arm 5, and needle core 2 passes through snap-latch surface
8 clamped position and locks are in elastic clip, wherein the snap-latch surface 8 on grab 6 and needle core 2 on elastic arm 5 cooperates, and makes needle core 2
It is in the lock state.The rear end of the elastic arm 5 is arranged in unlock 10 front of inclined-plane (12 front end of correcting item).
(2) tail-hood state is pressed after removal needle cap
As shown in fig. 7, a hand holds hemostix shell 1, another hand is reversed and is dialled except torsion cap 11.Then, it will take a blood sample
Device head is directed at blood sampling site, presses tail-hood 4, and tail-hood 4 moves forward in shell 1.
(3) needle core unhook state
As shown in figure 8, as tail-hood 4 persistently moves backward, after correcting structure (i.e. correcting item 12) front meets elastic arm 5 head-on
Portion, and force 5 end of elastic arm laterally to be opened under the action of unlocking inclined-plane 10, face when the grab 6 on elastic arm 5 is detached from locking
Needle core 2 issues in the effect of spring 3 and is shot through thorn after boundary's point.
It is explained as follows below for the possible variation of embodiment 1:
1. above embodiments 1 are although what is provided is to turn round shape for hat head press-type disposable blood taking device, the present invention does not limit to
In this, it is also applied for nut cap type head press-type disposable blood taking device.It turns round cap and nut cap is two kinds of forms of hemostix protective cap,
But both forms are unrelated with innovative point of the invention, this be skilled artisans appreciate that and cognition the case where.
2. set in the shell 1 in above embodiments 1 and see Fig. 4 there are two elastic arm 5(), two elastic arms 5 constitute one
A elastic clip, for clamping locking needle core 2.But the present invention is not limited to this, and constituting elastic clip can from 5 quantity of elastic arm
To be two, three, four, five, six etc..This be skilled artisans appreciate that and cognition the case where.
3. in above embodiments 1, figure 4, it is seen that the elastic arm 5 is straight-arm shape structure.But the present invention is not
It is confined to this, the elastic arm 5 is also possible to crank arm type structure or folding arm shape structure.This is that those skilled in the art exist
The case where on the basis of embodiment 1 it will be appreciated that with cognition.
4. spring 3 is an independent hardware in above embodiments 1, spring 3 can also be designed as plastics bullet
Spring, and made integrally with needle core 2.Skilled addressee readily understands that such situation of change.
5. the correcting structure constitutes (see figure 5) by four correcting items 12 in above embodiments 1.But the present invention not office
It is limited to this, the correcting structure can also be made of (see figure 9) at least two correcting pieces 13, or be made of a pilot 14
(see figure 10).This is the case where those skilled in the art are readily appreciated that and recognize on that basis of example 1.
6. 3 rear end of spring acts on tail-hood 4 in above embodiments 1.But the present invention is not limited to this, described
3 rear end of spring can also act on correcting structure.This be skilled artisans appreciate that and cognition the case where.
7. 3 front end of spring presses against on needle core 2 in above embodiments 1, if 2 tail portion of needle core is socketed a part
Or be made into seperated needle core, this part again with spring 3 press, and skilled artisans appreciate that and cognition feelings
Condition also belongs to protection scope of the present invention.The essence of the present invention here is that 3 front end of spring acts on needle core 2, wherein is had
Directly effect and two kinds of situations of indirectly-acting.Situation described above belongs to the connotation of indirectly-acting.
A kind of embodiment 2: rear pressure type disposable blood taking device (torsion shape for hat, between shell and needle core with spring correcting structure
Locking mechanism it is different from embodiment 1)
The disposable blood taking device is formed by shell 1, torsion cap 11, needle core 2, spring 3 and tail-hood 4 and (is not provided diagram).
The present embodiment 2 is the difference from embodiment 1 is that the locking mechanism between shell 1 and needle core 2 is different.Embodiment 1 is:
Extend in shell 1 to set and see Fig. 4 there are two elastic arm 5(), elastic arm 5 is equipped with the grab 6 for being used to lock needle core 2, it is corresponding described in
Grab 6 is equipped with snap-latch surface 8(on needle core 2 and sees Fig. 2 and Fig. 3), an elastic clip is collectively formed in two elastic arms 5, and needle core 2 is pressed from both sides
Position and lock is held in elastic clip, which is used to lock needle core 2(with the cooperation of grab 6 sees Fig. 6), so as to form the lock
Determine mechanism.Embodiment 2 is (not providing diagram): extending an elastic arm 5 in shell 1, elastic arm 5, which is equipped with, to be used to lock needle core
2 grab 6 or end face, elastic arm 5 and 1 inner wall of shell cooperatively form an elastic clip, and needle core 2 is clamped position and lock in elasticity
In folder, so as to form the locking mechanism.It, can also be with it can be seen that elastic clip can be not only made of at least two elastic arms 5
It is cooperatively formed by least one elastic arm 5 and 1 inner wall of shell.
Other contents are same as Example 1, and description is not repeated herein.
It is suitable for the present embodiment 2 in relation to the possible all changes of embodiment 1 above, is also not repeated to describe here.
A kind of embodiment 3: rear pressure type disposable blood taking device (torsion shape for hat, between shell and needle core with spring correcting structure
Locking mechanism it is different from embodiment 1)
The disposable blood taking device is formed by shell 1, torsion cap 11, needle core 2, spring 3 and tail-hood 4 and (is not provided diagram).
The present embodiment 3 the difference from embodiment 1 is that: the locking mechanism between shell 1 and needle core 2 is different.Embodiment 3 is
(not providing diagram): extending an elastic arm 5 in shell 1, elastic arm 5 is equipped with grab 6 or the end face for being used to lock needle core 2,
Elastic arm 5 and 12 inner wall of correcting item cooperatively form an elastic clip, and needle core 2 is clamped position and lock in elastic clip, with this shape
At the locking mechanism.It can be seen that elastic clip can be not only made of at least two elastic arms 5, it can also be by least one
Elastic arm 5 is cooperatively formed with 12 inner wall of correcting item.
Other contents are same as Example 1, and description is not repeated herein.
It is suitable for the present embodiment 3 in relation to the possible all changes of embodiment 1 above, is also not repeated to describe here.
A kind of embodiment 4: rear pressure type disposable blood taking device (band anti-misoperation device and torsion shape for hat) with spring correcting structure
As shown in figure 11, which is made of shell 1, torsion cap 11, needle core 2, spring 3 and tail-hood 4.
The present embodiment 4 the difference from embodiment 1 is that: on the tail-hood 4 forward extend be equipped with fool proof column 18(see Figure 12),
The corresponding fool proof column 18 is equipped with block 19(on the guard bar 16 for turning round cap 11 and sees Figure 11), under initial assembled state, fool proof column
18 is close or withstand on block 19, move forward tail-hood 4 can not under the premise of non-removal turns round cap 11, i.e., does not remove and turn round cap 11,
Tail-hood 4 because fool proof column 18 is close or be against on block 19 can not move forward triggering needle core 2 emit (see Figure 13 and Figure 14).
Other contents are same as Example 1, and description is not repeated herein.
It is suitable for the present embodiment 4 in relation to the possible all changes of embodiment 1 above, is also not repeated to describe here.
A kind of embodiment 5: rear pressure type disposable blood taking device (included to adjust head and turn round shape for hat) with spring correcting structure
As shown in Figure 15 and Figure 16, the hemostix is by shell 1, adjusting head 20, torsion cap 11, needle core 2, spring 3 and 4 groups of tail-hood
At.
The present embodiment 4 the difference from embodiment 1 is that: 1 head of shell, which is equipped with, can change the adjusting head 20 of paracentesis depth
Structure.And can change paracentesis depth adjusting head 20 can using the prior art, such as using application No. is
201610158481.8, publication No. CN105816188A, entitled " the disposable depth-adjustable needle insertion safety blood taking of modified
Needle " Chinese patent application disclosed in structure, or use Patent No. 201620212700.1, Authorization Notice No. is
CN205586011U, knot disclosed in the Chinese patent of entitled " improved disposable safety blood taking needle capable of adjusting puncture depth "
Structure is not described in detail herein.
Other contents are same as Example 1, and description is not repeated herein.
It is suitable for the present embodiment 5 in relation to the possible all changes of embodiment 1 above, is also not repeated to describe here.
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 rear pressure type disposable blood taking device with spring correcting structure, including shell (1), needle core (2), spring (3) and
Tail-hood (4)；
The shell (1) forms an ejection chamber, and needle core (2) by locking mechanism position and lock in ejection chamber, make by spring (3) front end
On needle core (2), needle core (2) is slidably connected on needle point direction of ejection by sliding slot guiding with shell (1)；
The tail-hood (4) is mounted on shell (1) tail portion, and is slidably connected on needle point direction of ejection with shell (1), tail-hood (4)
Unlocking mechanism is cooperatively formed with locking mechanism, so as to form tail portion push-press type emitting structural；
It is characterized by: being equipped with the correcting structure for righting for the spring (3), which is located on tail-hood (4)
And it protrudes into shell (1)；The correcting structure is made of at least three correcting items (12), or by least two correcting pieces (13)
It constitutes, pilot (14) either all correcting items (12) or all correcting pieces (13) is perhaps made of a pilot (14)
It is arranged in the periphery of spring (3) circumferentially around spring (3) and forms the correcting channel of a restricted spring (3), spring (3) is located at
In the correcting channel, make the resilient force of spring (3) on needle point direction of ejection, spring (3) rear end acts on correcting structure
Or on tail-hood (4)；
The locking mechanism is cooperatively formed by shell (1) and needle core (2), wherein is extended in shell (1) and is equipped at least one elasticity
Arm (5), elastic arm (5) are equipped with grab (6) or the end face for being used to lock needle core (2), and all elastic arm (5) is collectively formed one
Elastic clip or one of elastic arm (5) and shell (1) inner wall and correcting structure inner wall cooperatively form an elastic clip, needle
Core (2) is clamped position and lock in elastic clip, so as to form the locking mechanism；
The unlocking mechanism is cooperatively formed by correcting structure and elastic arm (5), wherein correcting structure forward face is to elastic arm (5)
Rear portion setting, in both correcting structure front and elastic arm (5) rear portion, at least one is equipped with unlock inclined-plane (10)；
In a state of use, when tail-hood (4) is pushed, tail-hood (4) moves forward in shell (1), correcting structure front
It meets elastic arm (5) rear portion head-on, and forces elastic arm (5) end laterally to be opened under the action of unlocking inclined-plane (10), work as elastic arm
(5) needle core (2) is issued in spring (3) effect after the grab (6) or end face disengaging locking critical point on is shot through thorn.
2. hemostix according to claim 1, it is characterised in that: needle core (2) front, which is equipped with, turns round cap (11), with this structure
At torsion shape for hat head press-type disposable blood taking device.
3. hemostix according to claim 2, it is characterised in that: the torsion cap (11) is located at needle core (2) front, and and needle
Core (2) links into an integrated entity injection molding structure, turns round cap (11) and is fixedly connected by torsional part (15) with guard bar (16) and constitutes, protection
The contractible neck (7) that can be twisted off is provided between bar (16) and needle core (2).
4. hemostix according to claim 3, it is characterised in that: extend forward on the tail-hood (4) and be equipped with fool proof column
(18), the corresponding fool proof column (18) is equipped with block (19) on the guard bar (16) for turning round cap (11), under initial assembled state, prevents
Slow-witted column (18) are close or withstand on block (19), move forward tail-hood (4) can not under the premise of non-removal turns round cap (11).
5. hemostix according to claim 1, it is characterised in that: needle core (2) front is equipped with nut cap, is constituted lid with this
Shape for hat head push type disposable blood taking device.
6. hemostix according to claim 1, it is characterised in that: shell (1) head, which is equipped with, can change puncture deeply
Adjusting head (17) structure of degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710376735.8A CN107007289B (en) | 2017-05-25 | 2017-05-25 | Rear pressure type disposable blood taking device with spring correcting structure |
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| CN201710376735.8A CN107007289B (en) | 2017-05-25 | 2017-05-25 | Rear pressure type disposable blood taking device with spring correcting structure |
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| CN107007289A CN107007289A (en) | 2017-08-04 |
| CN107007289B true CN107007289B (en) | 2019-08-23 |
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| CN201710376735.8A Active CN107007289B (en) | 2017-05-25 | 2017-05-25 | Rear pressure type disposable blood taking device with spring correcting structure |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108186029B (en) * | 2018-02-24 | 2019-12-27 | 苏州施莱医疗器械有限公司 | Tail pressing type disposable safety hemostix |
| CN108498105B (en) * | 2018-04-24 | 2019-08-23 | 苏州施莱医疗器械有限公司 | A kind of blood-taking device fence type damping correcting structure |
| CN108836357B (en) * | 2018-07-25 | 2024-02-23 | 天津华鸿科技股份有限公司 | Blood sampling pen capable of withdrawing needle and assembling method |
| CN111214241A (en) * | 2019-05-12 | 2020-06-02 | 天津华鸿科技股份有限公司 | Blood sampling pen |
| CN110279424B (en) * | 2019-07-17 | 2024-08-27 | 聚民生物科技有限公司 | Depth-adjustable safety blood taking needle |
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| CN107007289A (en) | 2017-08-04 |
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Denomination of invention: Rear pressure disposable blood collector with spring guide structure Effective date of registration: 20220105 Granted publication date: 20190823 Pledgee: China Minsheng Bank Co.,Ltd. Suzhou Branch Pledgor: STERILANCE MEDICAL (SUZHOU) Inc. Registration number: Y2022320010001 |
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