CN208389097U - A kind of needle safety retraction intravenous infusion needle - Google Patents
A kind of needle safety retraction intravenous infusion needle Download PDFInfo
- Publication number
- CN208389097U CN208389097U CN201720719956.6U CN201720719956U CN208389097U CN 208389097 U CN208389097 U CN 208389097U CN 201720719956 U CN201720719956 U CN 201720719956U CN 208389097 U CN208389097 U CN 208389097U
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- Prior art keywords
- needle
- positioning region
- holding section
- sliding
- sliding slot
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- 238000001802 infusion Methods 0.000 title claims abstract description 49
- 238000001990 intravenous administration Methods 0.000 title claims abstract description 40
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 99
- 230000001788 irregular Effects 0.000 claims abstract description 8
- 230000007246 mechanism Effects 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims description 9
- 230000008859 change Effects 0.000 claims description 7
- 238000005452 bending Methods 0.000 claims description 6
- 244000208734 Pisonia aculeata Species 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 230000001737 promoting effect Effects 0.000 claims description 2
- 238000013461 design Methods 0.000 abstract description 9
- 206010011409 Cross infection Diseases 0.000 abstract description 5
- 206010029803 Nosocomial infection Diseases 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 4
- 238000003780 insertion Methods 0.000 abstract description 2
- 230000037431 insertion Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 11
- 238000004519 manufacturing process Methods 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 210000004204 blood vessel Anatomy 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000002906 medical waste Substances 0.000 description 2
- 238000011017 operating method Methods 0.000 description 2
- 210000003462 vein Anatomy 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010412 perfusion Effects 0.000 description 1
- 208000001297 phlebitis Diseases 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000002792 vascular Effects 0.000 description 1
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model provides a kind of needle safety retraction intravenous infusion needle, comprising: needle stand, needle stand consist of two parts, and a part is hollow circle tube；Another part is the sheet or shaft that cylinder cylinder face side extends radially outward out, and sheet or shaft side continue to extend to form as connection clamping mechanism and fin；Two parts are to be similar to T shape or in being similar to U-shaped or H-shaped is connected；Pedestal, the cross section of pedestal is square, rectangle, circle, ellipse or irregular shape；Sliding connector, the cross section of sliding connector is square, rectangle, circle, ellipse or irregular shape；The cylindrical circular part of needle stand can be inserted into or the part of the hollow tube of insertion pedestal, and needle stand another part forms slidable connection and locking by the other side of sliding connector and pedestal；The utility model advantage be to can be reduced needle tip to the implicit damage of patient vessel, prevent that needle from stabbing and cross-infection, product design are miniaturized, there is biggish cost advantage.
Description
Technical field
The utility model relates to the technical fields of medical instrument, more particularly to a kind of needle safety retraction venous transfusion
Needle.
Background technique
The disposable safe transfusion needle product being at home and abroad widely used in the market at present, type are limited.It is main former
Because being that transfusion needle requirement is small in size, technical requirements and the side of realization that safety device can be extremely difficult to transfusion needle are added on transfusion needle
Just the purpose used.A safety transfusion needle being used effectively at present is defeated by the hose time shell type of Bi Di company of U.S. production
Liquid needle.Its principle is in the jacketed one layer of housing hose of infusion needle seat and its tail portion, and after infusion, extraction transfusion needle simultaneously will be outer
Set hose, which is raised to needle tubing head, entangles syringe needle to realize the purpose of safeguard protection.Although the product structure is simple and is able to satisfy defeated
The technical requirements of liquid needle, but use is highly inconvenient, and still has security risk in operation.It is existing other all kinds of
Innovate the safety transfusion needle of utility model, the mostly technical requirements and purpose convenient to use since transfusion needle can not be met simultaneously
(such as volume is excessive), be commercially available be widely used to promote it is very rare.
The key technology of safety transfusion needle requires to specifically include that
1) vertical range of needle tubing and needle stand bottom should be no more than 1.5 millimeters, otherwise can shape between needle tubing and needle tubing pedestal
It is easy to cause needle tip to the implicit damage of patient vessel at larger oblique angle；
2) transfusion needle due to want the long period be fixed on patient's the back of the hand thus length cannot too long and volume cannot be too
Greatly, otherwise inconvenient to use and be easy to cause patient's discomfort etc..
The existing traditional single wing transfusion syringe being widely used in the market, in puncture, fixation and extraction needle tubing, operator
Hand-held fin need to carry out a degree of rotation and just facilitate the operation completed puncture, fix and pull out needle, which will lead to needle tubing
Rotate in the blood vessels, operator operating habit, puncture and pull out needle angle and strength etc. it is different due to, it is more
In number situation, needle tip can cause different degrees of implicit damage to blood vessel, and (this is also that the patient being often infused is easy to suffer from
One of the reason of phlebitis).Used pollution needle tubing is exposed be easy to cause outside medical staff's needle stab with secondary damage from
And lead to possible cross-infection.
In order to preferably solve the safety protection problem of transfusion needle, the purpose of this utility model includes:
1. promoting safety protection function, safe infusion is realized:
1) needle tip implicit damage caused by patient vessel's inner wall in infusion process is reduced to greatest extent；
2) the potential needle that faces in operation of protection medical worker is stabbed and cross-infection to greatest extent；
3) MEDICAL WASTE TREATMENT potential secondary damage and environmental pollution in the process are prevented
2. realizing product design micromation:
1) product design is miniaturized by structure innovation, promotes the controllability and comfort of product；
2) do not change and operate with habit, and is more convenient comfortable, preferably manipulation experience is provided；
3. simplifying production technology:
1) product design is succinct, and simple production process is easy to implement industrialized mass production；
2) while greatly improving product quality and safety, production cost will not be dramatically increased.
Utility model content
In order to achieve the above object, the utility model provides a kind of needle safety retraction intravenous infusion needle, comprising:
Needle stand, needle stand consist of two parts, and a part is hollow circle tube, and cylinder one end is used to install needle tubing and sheath,
The other end is used for connecting conveying pipe；Another part is the sheet or shaft that cylinder cylinder face side extends radially outward out, piece
Shape or shaft side continue to extend to form connection positioning region, sliding slot, holding section and fin of various different structures etc.；Two parts
To be similar to T shape or in being similar to U-shaped or H-shaped is connected；The needle stand is provided on another part of the fin
First connection positioning region；
Pedestal, the cross section of pedestal is square, rectangle, circle, ellipse or irregular shape, pedestal side are equipped with longitudinal
The hollow tube of distribution, the other side are equipped with longitudinal chute or connection positioning region, and hollow tube both ends are opening-like, longitudinal pipe pipe face and outer
The sliding slot of boundary and the other side is in connected state or closed structure；
Sliding connector, sliding connector cross section is square, rectangle, circle, ellipse or irregular shape, side or
Two sides are equipped with the connection positioning region of longitudinal chute or protrusion；The shape and structure of the sliding connector and its relative to pedestal
With rigging position locating for needle stand extension, not according to the connection snap fit of sliding connector and pedestal and needle stand extension
Change together；
On the sliding slot of the needle stand, pedestal and sliding connector setting or the rod-shaped or tablet that extends of the needle stand other side
On be respectively equipped with one or more engaging position-limit mechanisms；The cylindrical circular part of needle stand can be inserted into or be embedded in the hollow tube of pedestal
Part, another part of needle stand by the other side of sliding connector and pedestal formed can assembly connection and fixation, and outside
Power effect is lower to be realized unlock, slides and relock；
After infusion, operator presses the pedestal on the other hand, and a hand-held needle stand fin is pulled back backward, and pull-back forces make institute
The engaging stated between engaging and sliding connector and pedestal between needle stand and the sliding fitting unlocks respectively, and needle stand is opposite
Slided backward in sliding connector and sliding connector driven to slide backward relative to pedestal, needle tubing by gradually from human body extract and
It is retracted into pedestal simultaneously, hold to slide into respectively backward when needle stand and sliding connector and set position i.e. needle tip and covered completely by pedestal
Gai Hou can be formed between needle stand and sliding connector and again respectively between sliding connector and pedestal and be engaged and lock, make
Reverse slide can not be done by obtaining needle stand and sliding connector.
Preferably, two parts connection of needle stand is hollow circle tube in T shape, a part is similar to, and another part is in the form of sheets
Object is extended outward into similar to L-shaped structure, and the first connection positioning region, the L shape piece are provided on the L shape tablet one side
Shape object continues to extend outward to form fin by one section of close end；Sliding connector body side is provided with first sliding groove on face, the
It is provided with the first, second, and third holding section on one sliding slot, the second connection positioning region is provided on another side corresponding thereto；
It is provided with second sliding slot on the one side of pedestal, the four, the 5th and the 6th holding section is provided in second sliding slot；First connection is fixed
Position portion is corresponding with first sliding groove and the first, second, and third holding section being arranged in first sliding groove, the second connection positioning
Portion is corresponding with second sliding slot and the four, the 5th and the 6th holding section being arranged in second sliding slot.
Preferably, two parts connection of needle stand is provided on another part of fin in T shape, the needle stand is similar to
Third sliding slot, needle stand a part are hollow circle tube, and object is extended outward into similar to L-shaped structure another part in the form of sheets, the L
It is provided with third sliding slot on shape tablet, the 7th and the 8th holding section is provided on the third sliding slot, the L shape tablet leans on
One section of close end is continued to extend outward to form fin；Third connection positioning region is provided on the one side of sliding connector, with it
The second connection positioning region is provided on opposite another side；It is provided with second sliding slot on pedestal one side, is set in second sliding slot
It is equipped with the four, the 5th and the 6th holding section；On the sliding connector on third connection positioning region and described needle stand another part
Third sliding slot and the 7th and the 8th holding section is set on third sliding slot corresponding, the second connection positioning region and described the
Two sliding slots and setting the four, the 5th and the 6th holding section in second sliding slot are corresponding.
Preferably, two parts connection of needle stand is hollow circle tube, another portion in U-shaped or H-shaped, needle stand a part is similar to
Divide object in the shape of a rod to extend outward to form similar to U-shaped structure, is provided with the first connection on the extension rod end one side
Positioning region, the shaft continue to extend outward to form fin by one section of close end；Is provided on sliding connector one side
One sliding slot is provided with the first, second, and third holding section in first sliding groove, the second company is provided on another side corresponding thereto
Connect positioning region；It is provided with second sliding slot on pedestal one side, the four, the 5th and the 6th holding section is provided in second sliding slot；Institute
It states the first connection positioning region on needle stand another part and the first sliding groove on the sliding connector and is set to first and slide
The first, second, and third holding section on slot is corresponding, second connection positioning region and the second sliding slot and is set to
The the four, the 5th and the 6th holding section in second sliding slot is corresponding；.
Preferably, two parts connection of needle stand is in U or H-shaped, and a part of needle stand is hollow circle tube, and another part is outside
The shaft similar to U-shaped is extended to form, the nine, the tenth and the 11st holding section, institute are provided on the shaft one side
Shaft is stated to continue to extend outward to form fin by one section of close end；The the 4th and the 5th company is provided on sliding connector one side
Connect positioning region, the 4th and the 5th connection positioning region is generally longitudinally open groove-like structure in one, another side corresponding thereto
On be provided with the second connection positioning region；Second sliding slot is provided on the one side of pedestal, be provided with the 4th in the second sliding slot,
5th and the 6th holding section；The sliding connector side the 4th and the 5th connection positioning region and the needle stand shaft and
On shaft described nine, the tenth and the 11st the corresponding, sliding connector second in holding section connect positioning region with it is described
Second sliding slot on pedestal and the four, the 5th and the 6th holding section being set in the second sliding slot are corresponding.
Preferably, the pipe face of pedestal hollow tube has longitudinal crack.
Preferably, the pipe face of pedestal hollow tube is closing structure.
Further, sliding connector is rough cuboid, and cuboid one side is provided with hollow first sliding groove, first
The head that the shape size of sliding slot connect positioning region with first is adapted, and described first sliding groove one end is openning shape, and the other end is
Silent shape is formed with first through hole on the end face of the closed end；When the first connection positioning region of the needle stand is from described first
When sliding slot open end enters sliding slot and slides axially, first connection positioning region is set in the axially displaced of the sliding slot
One or more limit clamping mechanism limits and locking on the sliding slot one side；Sliding connector leans on another side
The position of nearly sliding slot open end end is equipped with the second connection positioning region；
Further, the first sliding groove is provided with the first holding section and the second holding section on one section of open end, when
When one connection positioning region is pushed into and is axially moveable from first sliding slot opening end, the bar portion of the first connection positioning region squeezes the first card
Conjunction portion is simultaneously located at the characteristics of sliding slot open end end is easy to produce slight deformation using it and squeezes and slip over the first holding section, when
After one connection positioning region passes through, the recoverable force of the first holding section move first connection positioning region can not reversely freely
It is dynamic；First connection positioning region stops movement after slipping over the first holding section, and first, which connects positioning region, just stops and be limited at the
Between one holding section and the second holding section, to realize that needle stand and sliding connector are limited locking after finishing assembly.
Further, the first sliding groove is provided with third holding section on one section of closed end, when hand-held needle stand fin
When the first connection positioning region being made to axially move to first through hole, the bar portion of the first connection positioning region, which squeezes the second holding section, makes it
It generates slight resilient deformation and releases it and limit and pass through the second holding section to the engaging of the first connection positioning region, described first connects
Connect after positioning region slides through described second and third holding section in the same way as described above, described second and third holding section change
Shape is restored, so that the first connection positioning region can not move backward, so that the first connection positioning region is after reaching setting position
Engaged and locked again.
Further, hollow second sliding slot is provided on pedestal one side, the shape size of second sliding slot is connect with second
The head of positioning region is adapted, and described second sliding slot one end is openning shape, and the other end is silent shape, on the end face of the closed end
It is formed with the second through-hole；When the second connection positioning region of sliding connector enters and slides axially from second sliding slot open end
When, the axially displaced one or more that is set at the sliding slot one side on of the second connection positioning region in the sliding slot
Engage position-limit mechanism limit and locking.
Further, it is provided with the 4th holding section and the 5th holding section on one section of the nearly open end of the second sliding slot, when second
When connection positioning region enters and is axially moveable from second sliding slot open end, the bar portion of the second connection positioning region squeezes the 4th engaging
Portion is simultaneously located at the characteristics of sliding slot open end end is easy to produce slight deformation using it and squeezes and slip over the 4th holding section；Second connects
It connects after positioning region slips over the 4th holding section, the recoverable force of the 4th holding section, so that the second connection positioning region can not reversely freely
It is mobile；Second connection positioning region stops movement after through the 4th holding section, and the second connection positioning region just stops and is limited in
Between 4th and the 5th holding section, so that the sliding connector is limited locking after being completed with pedestal.
Further, the second sliding slot is provided with the 6th holding section on one section of closed end, when needle stand fin of pulling back
When the second connection positioning region for driving sliding connector and its being arranged on sliding connector axially moves to the second through-hole, the
The bar portion of two connection positioning regions, which squeezes the 5th holding section, makes it be deformed contraction and unlock, and the second connection positioning region slips over the 5th
Continue to move back behind holding section, and by it is above-mentioned it is same in a manner of slip over the 6th holding section, when second connection positioning region by the 6th card
Behind conjunction portion, the recoverable force of the 6th holding section, so that the second connection positioning region can not move backward again, so that the second connection
Positioning region is after sliding into setting position by snap lock again.
Preferably, the structure of the connection positioning region is in be similar to "T"-shaped, " work " shape or longitudinal opening channel-shaped etc..
Preferably, structure semicircular in shape, denation or the groove of the holding section and have certain elastic telescopic
Function similar to the sheet of Y-shaped or rod-like structure etc..
Preferably, the junction of another portion of needle stand extends fin and extension is provided with groove, notch or whole in piece
The thickness of shape structure, the laminated structure is less than or equal to 0.8 millimeter.Purpose using the design is to realize fin even
Socket part can radially do about 45 degree of deformation displacement or bending, and displacement is rotated or deformed with fin and is existed needle tubing is reduced or avoided
Rotation in blood vessel and cause the implicit damage to patient vessel's inner wall, while can be significantly increased medical staff in vascular puncture and
Extract the handling and operation comfort during syringe needle.Rotary connection can also be used in the fin and the needle stand extension
Structure.
The utility model is using the needle stand and pedestal of special designing by the sliding connector of special designing by needle stand and bottom
Seat mutually assembly connection and fixation, and needle stand and sliding connector and sliding connector and pedestal can be realized under external force
Between mutual unlock, sliding and snap lock again.The conventional tradition of the operating method and use of venipuncture and extraction needle tubing is defeated
The operating method of liquid needle is completely the same；After infusion-completed, pedestal is pressed on the other hand, and a hand-held needle stand handle routinely pulls out needle
Needle tubing is extracted from patient's body and is retracted into pedestal simultaneously by method, after needle point head is fully withdrawn to pedestal, needle stand
It can mutually relock and cannot move axially between sliding connector and between sliding connector and pedestal, peace is reached with this
The purpose of full guard.
The installation step and application method of the utility model needle safety retraction intravenous infusion needle are as follows:
1) needle stand assembles: needle stand+perfusion tube+needle tubing+sheath；
2) pedestal+sliding connector；
3) pedestal+sliding connector+assembles the needle stand of needle tubing, sheath and delivery pipe；
4) application method and traditional infusion needle are substantially completely consistent.
The advantages of the utility model, is mainly reflected in following aspects:
1. preventing needle from stabbing and cross-infection:
1) sharp needle tip implicit damage caused by patient vessel's inner wall is reduced to greatest extent；
2) the potential needle that faces in operation of protection medical worker is stabbed and cross-infection to greatest extent；
3) MEDICAL WASTE TREATMENT potential secondary damage and environmental pollution in the process are prevented
2. product design is miniaturized:
1) miniaturized design that product is realized by structure innovation meets the technical requirements and patient comfort of infusion
2) do not change it is existing operate with habit, controllability is substantially improved, it is more convenient to use, comfortable；
3. production technology:
1) product design is accurate, succinct, and simple production process is easy to implement industrialized mass production；
2) while product quality and safety is substantially improved, without dramatically increasing production cost.
Detailed description of the invention
Fig. 1 is the structural representation of the needle safety retraction intravenous infusion needle of first preferred embodiment of the utility model
Figure；
Fig. 2 is the structure of the needle stand of the needle safety retraction intravenous infusion needle of first preferred embodiment of the utility model
Schematic diagram；
Fig. 3 is the main view of the needle stand of the needle safety retraction intravenous infusion needle of first preferred embodiment of the utility model
Figure；
Fig. 4 is the sliding connector of the needle safety retraction intravenous infusion needle of first preferred embodiment of the utility model
Structural schematic diagram；
Fig. 5 is the sliding connector of the needle safety retraction intravenous infusion needle of first preferred embodiment of the utility model
Left view；
Fig. 6 is the structure of the pedestal of the needle safety retraction intravenous infusion needle of first preferred embodiment of the utility model
Schematic diagram；
Fig. 7 is the structural representation of the needle safety retraction intravenous infusion needle of second preferred embodiment of the utility model
Figure；`
Fig. 8 is the structure of the pedestal of the needle safety retraction intravenous infusion needle of second preferred embodiment of the utility model
Schematic diagram；`
Fig. 9 is the structure of the needle stand of the needle safety retraction intravenous infusion needle of second preferred embodiment of the utility model
Schematic diagram；
Figure 10 is the structural representation of the needle safety retraction intravenous infusion needle of the third preferred embodiment of the utility model
Figure；
Figure 11 is the main view of the needle safety retraction intravenous infusion needle of the third preferred embodiment of the utility model；`
Figure 12 is that the needle safety retraction intravenous infusion needle of the third preferred embodiment of the utility model pulls open state
Structural schematic diagram；
Figure 13 is the knot of the needle stand of the needle safety retraction intravenous infusion needle of the third preferred embodiment of the utility model
Structure schematic diagram；
Figure 14 is being slidably connected for the needle safety retraction intravenous infusion needle of the third preferred embodiment of the utility model
The structural schematic diagram of part；
Figure 15 is that the needle safety intravenous infusion needle that bounces back of the 4th preferred embodiment of the utility model pulls open state
Structural schematic diagram；
Figure 16 is the knot of the needle stand of the needle safety retraction intravenous infusion needle of the 4th preferred embodiment of the utility model
Structure schematic diagram；
Figure 17 is being slidably connected for the needle safety retraction intravenous infusion needle of the 4th preferred embodiment of the utility model
The structural schematic diagram of part.
Specific embodiment
A preferred embodiment of the utility model is introduced below with reference to Figure of description, citing proves that the utility model can
To implement, the technology contents can be kept more clear and be convenient for those of skill in the art's complete description the utility model
Understand.The utility model can be emerged from by many various forms of embodiments, and protection scope is not limited only to text
In the embodiment mentioned, figures and description herein substantially illustrates rather than limitation the utility model.In the accompanying drawings,
The identical component of structure indicates that the similar component of structure or function is also with phase everywhere in different embodiments with same numbers label
It is indicated like number designation.
The utility model provides a kind of needle safety retraction intravenous infusion needle, comprising: needle stand, needle stand is by two parts group
At a part is hollow circle tube, and cylinder one end is used for connecting conveying pipe for installing needle tubing and sheath, the other end；Cylinder cylinder
Face side extends radially outward out sheet or shaft, and the side of sheet or shaft, which continues to extend, can form various not similar shapes
The structure of shape and function includes connection positioning region, sliding slot and holding section and fin etc.；Two parts are to be similar to T shape or in close
It is similar to U-shaped or H-shaped is connected；
Pedestal, the cross section of pedestal is square, rectangle, circle, ellipse or irregular shape, the side of pedestal are equipped with vertical
To the hollow tube of distribution, the other side is equipped with longitudinal hollow sliding slot or connection positioning region, and hollow tube both ends are opening-like, longitudinal pipe
Pipe face and extraneous and the other side the sliding slot in connected state or closed structure；
Sliding connector, the cross section of sliding connector main body is square, rectangle, circle, ellipse or irregular shape,
Body side or two sides are equipped with the connection positioning region of longitudinal chute or protrusion；The sliding connector main body and disposed thereon
Sliding slot or connect positioning region shape and its relative to rigging position locating for pedestal and needle stand extension according to sliding connect
Fitting changes with the difference of pedestal and the connection snap fit of needle stand extension；
Set by the rod-shaped or tablet and its each component of the pedestal, the sliding connector and the needle stand extension
Sliding slot on be respectively arranged with one or more engaging position-limit mechanisms；
The cylindrical circular part of needle stand can be inserted into or the part of the hollow tube of insertion pedestal, another part of needle stand pass through cunning
The other side of follower link and pedestal, which is formed, assembly connection and fixation and unlock under external force, sliding and to lock again
It is fixed.
Embodiment one
As shown in Fig. 1 ~ Fig. 6, the utility model provides a kind of needle safety retraction intravenous infusion needle, and needle stand 1 is by two
It is grouped as, a part 11 is hollow circle tube, and cylinder one end is used for connecting conveying pipe for installing needle tubing and sheath, the other end；
Cylinder cylinder face side extends radially outward out tablet 12, and 12 side of tablet continues to extend to form connection positioning region and the wing
Piece；The connection of two parts 11 and 12 of needle stand 1 is provided with the first connection positioning region in substantially T-shaped on another part 12 of needle stand 1
13；It is provided with first sliding groove 21 on the one side 2a of sliding connector 2, the first holding section 27, are provided in first sliding groove 21
Two holding sections 22 and third holding section 23 are provided with the second connection positioning region 24 on another side 2c corresponding thereto；Pedestal 3
It is provided with second sliding slot 31 on one side 3a, the 4th holding section 35, the 5th holding section 34 and the 6th are provided in second sliding slot 31
Holding section 33；First connection positioning region 13 and first sliding groove 21 and the first holding section 27, second being set in first sliding groove
Holding section 22 and third holding section 23 are corresponding, and second connects positioning region 24 and second sliding slot and be set in second sliding slot
4th holding section 35, the 5th holding section 34 and the 6th holding section 33 are corresponding.
Specifically, the first connection positioning region 13 is that needle stand another part 12 is arranged in close to the cross section of head one end is class
It is similar to the first T shape buckle 13 of T shape (or work shape)；Cylinder cylinder face side extends radially outward out tablet 12；Tablet 12
End form fin 4, fluting is simultaneously made in the flaky connection in the junction 14 of fin 4 and 12 end of tablet or notch is handled,
The purpose is to make fin that can radially do elasticity bending or deformation rotation relative to tablet 12, anti-skidding is provided on fin 4
Grain 41.
Sliding connector 2 is rough cuboid, and the one side 2a of cuboid is provided with hollow first sliding groove 21, first
The head of the shape size of sliding slot 21 and the first T shape buckle 13 is adapted；When the first T shape of needle stand 1 buckles 13 from first sliding groove
When 21 open ends enter sliding slot and slide axially, 13 axially displaced in the sliding slot of the first T shape buckle be set and
Limitation；Sliding connector 2 is equipped on the end position of sliding slot open end on the another side 2c opposite with one side 2a
2nd T shape buckle 24；21 one end of first sliding groove of the one side 2a of sliding connector 2 is openning shape, and the other end is silent shape, institute
It states and is formed with first through hole 25 on the end face 2d of closed end.
First sliding groove 21 is provided with the first holding section 27, specifically, the first holding section on the groove face of one section of open end
27 be to be arranged on the sliding slot one side in the protrusion similar to triangle.When the first T shape buckle 13 is opened from first sliding groove 21
When mouth end is pushed into and slides axially, the bar portion of the first T shape buckle 13 squeezes the first holding section 27 and is simultaneously located at sliding slot using it
It open end end and is pressed through the characteristics of be easy to produce slight deformation, after the first T shape buckle 13 passes through, the first card
The recoverable force in conjunction portion 27, so that the first T shape buckle 13 can not move backward again, the first T shape buckle 13 passes through first
Stop pushing behind holding section 27, the first T shape buckle 13 will rest between the first holding section 27 and the second holding section 22 and quilt
It limits and cannot move freely, so that being limited lock after assembly connection of the needle stand 1 between completion and sliding connector 2
It is fixed.
21 side groove face of first sliding groove is equipped with the second card similar to Y-shaped with certain elastic telescopic deformation function
Conjunction portion 22 and third holding section 23, when hand-held needle stand fin 4 is pulled back and the first T shape buckle 13 is made to do axial direction to first through hole 25
When mobile, the bar portion of the first T shape buckle 13 squeezes and 22 He of the second holding section by deforming function with certain elastic telescopic
Third holding section 23, after the first T shape buckle is pressed through, the recoverable force of the second holding section 22 and third holding section 23, the
One T shape buckle 13 is just locked between 21 closed end side of third holding section 23 and first sliding groove and can not move, to make
The first T shape buckle 13 is obtained after sliding into setting position by limitation locking again.
As shown in figure 3, a line L1 institute of tablet 12 not being directly connected to needle stand 1 is arranged in the first T shape buckle 13
On the face of formation.
As shown in fig. 6, pedestal 3, pedestal 3 consists of two parts, and a part is the ontology of general hollow, and ontology one side is set
There are hollow second sliding slot 31, the head phase of the shape size of second sliding slot 31 and the 2nd T shape buckle 24 on sliding connector
It adapts to, described 31 one end of sliding slot is openning shape, and the other end is silent shape, and the second through-hole (figure is formed on the end face 3b of closed end
In be not shown)；When the 2nd T shape of sliding connector 2 buckle 24 is pushed into and slides axially from 31 open end of second sliding slot,
2nd T shape buckle, 24 axially displaced on the sliding slot one side is set and limits；Another part is hollow longitudinal direction circle
Shape pore structure, the outer diameter of the cylindrical portion of the internal diameter and needle stand 1 in longitudinally rounded hole 32 are slidability fit dimension；Pedestal is vertical
Have what is be in communication with the outside to crack 320 to round hole side.Second sliding slot 31 is equipped with the 4th holding section 35 for one section close to open end,
Specifically, it is in be similar to triangular hill, second sliding slot that the 4th holding section 35 is set on the one side of sliding slot open end for one
The 5th and six holding sections 34 and 33 similar to Y-shaped with certain elastic telescopic function are additionally provided on 31；When being slidably connected
The 2nd T shape of part buckle 24 is when be pushed into and axially move from 31 open end of second sliding slot, the bar portion extruding of the 2nd T shape buckle 24 the
Four holding sections 35 are simultaneously pressed through the characteristics of be located at sliding slot open end end using it and be easy to produce slight deformation, second
T shape buckle 24 is pushed by stopping behind the 4th holding section, the recoverable force of the 4th holding section 35, and the 2nd T shape buckle 24 just stops
And be limited between the 4th holding section 35 and the 5th holding section 34 and can not move freely, so that sliding connector
2 are limited locking after completing assembly connection with pedestal.
Further, when hand-held needle stand fin 4 is pulled back and the 2nd T shape buckle 24 is driven to axially move to the second through-hole
When, the bar portion of the 2nd T shape buckle 24 is squeezed the 5th holding section 34 and is realized using its deformable flexible feature and unlocked and lead to
It crosses, after the 2nd T shape buckle 24 continues to move backward and squeeze in the same way as described above and pass through the 6th holding section 33, the 5th card
The recoverable force in conjunction portion 34 and the 6th holding section 33, the 2nd T shape buckle 24, which is just limited, is locked in the 6th holding section 33 and second
Between the closed end side of sliding slot 31, so that the 2nd T shape buckle 24 is limited after sliding into setting position and locks and nothing
Method is mobile.
The sliding connector is respectively positioned between pedestal and the needle stand other side and one or more by the way that its two sides is arranged in
It is a to connect positioning region or sliding slot to realize assembly connection and the fixation of part corresponding with the pedestal and the needle stand, Yi Ji
Unlock under external force, sliding and snap lock again；Further, the sliding connector can also be nested in by pedestal or needle stand
It is realized and phase in the sliding slot or cavity that side is formed and by the one or more connection positioning regions being arranged on one side
The connection and engaging of corresponding needle stand or base portion.
The junction of the fin and extension that the needle stand side is extended is provided with groove, notch or in whole sheet
Structure, Hou Du≤0.8mm of the sheet interconnecting piece, so that the junction of the fin and extension can radially do about 45
The deformation of degree shifts or elasticity bending；Rotary type connection structure can also be used in the fin and the needle stand extension.
When needle stand 1, sliding connector 2, the interconnection of pedestal 3 are assembled together into an assembly, needle stand 1, sliding connect
Fitting 2 and pedestal 3 are in the laid out in parallel for being connected with each other or being socketed.
After the completion of infusion, pedestal 3 is pressed on the other hand, when a hand-held needle stand fin 4 pulls back, pulling force makes needle stand and cunning
Limit between follower link and between sliding connector and pedestal, which engages, successively to be unlocked, while needle stand 1 is relative to sliding
Connector 2 make it is axial move back, and needle stand 1 drive sliding connector 2 relative to pedestal 3 make it is axial move back, needle tubing is gradually by from trouble
Pedestal is extracted and is retracted into simultaneously in person's body until needle section is enveloped completely by pedestal 3；According to preset detent, work as syringe needle
Portion is fully withdrawn to pedestal, can successively shape again between needle stand and sliding connector and between sliding connector and pedestal
At snap lock, needle section will be unable to be released pedestal again.
The great advantage of the utility model design is not only in that the safety for being able to achieve needle tubing is shunk back, and ensures needle tubing and suffer from
Person body skin contact position keeps consistent smooth with traditional infusion needle.
Embodiment two
As shown in Fig. 7 ~ Fig. 9, it is defeated that second preferred embodiment of the utility model provides a kind of needle safety retraction vein
Liquid needle, needle stand a part are hollow circle tube, and cylinder one end is used for connecting conveying pipe for installing needle tubing and sheath, the other end；
Another part is that cylinder cylinder face tail end side extends radially outward out shaft 14, and the shaft side continues to extend to form
Shaft 12 and the first connection positioning region 13 being set on the shaft 12 and fin 4, needle stand two parts connection
In being similar to U or H-shaped structure, shaft 12 and fin 4 form laminar connect and its junction can make elastic bending.
The structure of sliding connector 2 is referring to fig. 4.First sliding groove 21 is provided on the one side of sliding connector 2, with its phase
Pair another side on be provided with the second connection positioning region 24；The first holding section 27, second is provided in the first sliding groove 21
Holding section 22 and third holding section 23；As shown in figure 8, the pipe face of the hollow tube of pedestal 3 is closing structure；The one side of pedestal 3
It is provided with second sliding slot 31 on 3a, the 4th holding section 35, the 5th holding section 34 and the 6th holding section are provided in second sliding slot 31
33；First connection positioning region 13 and the first sliding groove 21 and the first holding section 27 being arranged in the first sliding groove, the
Two holding sections 22 and third holding section 23 are corresponding, and the second connection positioning region 24 is with the second sliding slot 31 and setting described
The 4th holding section 35, the 5th holding section 34 and the 6th holding section 33 in second sliding slot 31 is corresponding.
Embodiment three
As shown in Figure 10 ~ Figure 14, the utility model provides a kind of needle safety retraction intravenous infusion needle, and needle stand 1 is by two
Part forms, and a part 11 is hollow circle tube, and cylinder one end is used for connecting conveying pipe for installing needle tubing, the other end；Cylinder
Cylinder face side extends radially outward out sheet 12, and the side of tablet 12 continues to extend and forms sliding slot and card on extension
Conjunction portion and fin；Two parts connection of needle stand 1 is in similar to T shape or L shape.Third is provided on another part 12 of needle stand 1
Sliding slot 15 is provided with the 7th holding section 16 and the 8th holding section 19 on third sliding slot 15；It is arranged on the one side of sliding connector 2
There is third to connect positioning region 25, is provided with the second connection positioning region 24 on another side corresponding thereto；As shown in fig. 6, pedestal 3
The pipe face side of hollow tube be equipped with and longitudinal crack 320.Second sliding slot 31, second sliding slot are provided on the one side 3a of pedestal 3
Fourth, fifth, six holding sections 35,34,33 are provided on 31；Third connects positioning region 25 and third sliding slot and with setting in third
The 7th holding section 16 and the 8th holding section 19 on sliding slot 15 is corresponding, the second connection positioning region 24 and second sliding slot and setting
The 4th holding section 35, the 5th holding section 34 and the 6th holding section 33 in second sliding slot is corresponding；Engaged by above-mentioned correspondence,
Being linked and packed between pedestal, sliding connector and needle stand can be achieved and be fixed to each other, and under external force described in realization
Mutual unlock, sliding and snap lock again between component.
Example IV
As shown in Figure 15 ~ Figure 17, the 4th preferred embodiment of the utility model provides a kind of needle safety retraction vein
Transfusion needle, needle stand a part are hollow circle tube, and another part extends radially outward out rod-shaped for hollow cylinder tail end side
Object 14, the shaft side continue to extend to form fin 4, and needle stand two parts connection is in similar to U or H-shaped structure；Institute
It states shaft 14 and fin 4 and forms that flake is connect and its junction can make elastic bending；It is provided on the shaft 14
9th holding section 17, the tenth holding section 20 and the 11st holding section 21；The 4th connection is provided on the one side of sliding connector 2
Positioning region 26 and the 5th connection positioning region 18, the 4th and the 5th connection positioning region are integral open slot and strengthen structure, sliding
The second connection positioning region 24 is provided on connector another side.
As shown in figure 8, the pipe face of the hollow tube of pedestal 1 is closing structure；It is sliding that second is provided on the one side 3a of pedestal 3
Slot 31 is provided with the 4th holding section 35, the 5th holding section 34 and the 6th holding section 33 in second sliding slot 31,；On sliding connector
The 4th holding section 35 that is arranged on second connection positioning region 24 and the second sliding slot and second sliding slot, the 5th holding section 34 and
Six holding sections 33 are corresponding；The sliding connector the 4th connects positioning region 26 and the 5th connection positioning region 18 and the needle stand bar
The 9th holding section 17, the tenth holding section 20 and the 11st holding section 21 being arranged on shape object 14 and shaft are corresponding；Into one
Step, the 4th connection positioning region 26 is an openning shape longitudinal chute, and the 4th connection positioning region side, which extends back one, to be had
Elasticity connects positioning region 18 similar to the 5th of pawl；4th connection positioning region 26 and the needle on the sliding connector
Seat shaft 14 and it is described it is rod-shaped on the 9th holding section 17 it is corresponding；The 5th connection positioning region 18 is with setting described
The tenth holding section 20 and the 11st holding section 21 on shaft 14 is corresponding；9th holding section is to be arranged in the shaft 14
One protrusion step of one side surface of front end；Tenth and the 11st holding section be arranged in the recessed card in one side surface of shaft
Mouthful；By above-mentioned corresponding engaging, it can be achieved that the pedestal, the sliding connector and the needle stand include the needle stand extension
Between mutual assembly connection and fixation, and realize under pull-back forces effect needle stand and sliding connector and sliding connector with
Mutually unlocking, slide and relocking between pedestal.
The pedestal and sliding connector that the utility model uses the needle stand of special designing and matches with needle stand constitute peace
The main structure of full transfusion needle；Above-mentioned case study on implementation is mainly the knot being placed in sliding connector between pedestal and needle stand extension
Structure and mutual cooperation are illustrated；Further, the shape and Structural Transformation and pedestal and cunning extended according to needle stand extension
The shape of dynamic connection and the corresponding change of structure can also derive more implementable cases, such as: by sliding connector main body
Part is nested in pedestal or the sliding slot or cavity of needle stand extension side, and sliding connector is by being located at one or more of side
Realize assembly connection and snap lock function in the holding section of a connection positioning region side corresponding with needle stand or pedestal.
The above is only the preferred embodiment of the utility model, it is noted that for the ordinary skill of the art
Personnel can also make several different cooperations and structure evolution, these change without departing from the principle of this utility model
Become and evolution also should be regarded as the protection scope of the utility model.
Claims (15)
- The intravenous infusion needle 1. a kind of needle safety bounces back characterized by comprisingNeedle stand, the needle stand consist of two parts, and a part is hollow circle tube, and cylinder one end is used to install needle tubing and sheath, The other end is used for connecting conveying pipe；Another part is the sheet or shaft that cylinder cylinder face side extends radially outward out, piece Shape or shaft side continue to extend to form connection positioning region, sliding slot and holding section and fin；Two parts be similar to T shape or Person is in being similar to U-shaped or H-shaped is connected；Pedestal, the cross section of the pedestal is square, rectangle, circle, ellipse or irregular shape, the pedestal side are equipped with The hollow tube of genesis analysis, the other side are equipped with longitudinal chute or connection positioning region, and the hollow tube both ends are opening-like, longitudinal pipe Pipe face and extraneous and the other side the sliding slot can be in connected state or closed structure；Sliding connector, the sliding connector cross section is square, rectangle, circle, ellipse or irregular shape, side or Two sides are equipped with the connection positioning region of longitudinal chute or protrusion；The sliding connector and sliding slot disposed thereon and connection are fixed The shape in position portion and its relative to rigging position locating for pedestal and needle stand extension according to sliding connector and pedestal and needle Seat extension connection snap fit difference and change；Cunning set by the rod-shaped or tablet and its each component of the pedestal, the sliding connector and the needle stand extension One or more engaging position-limit mechanisms are respectively arranged on slot；The cylindrical circular part of needle stand can be inserted into or be embedded in the bottom Another part of the hollow tube portion of seat, the needle stand is formed mutually by the other side of the sliding connector and the pedestal The assembly connection of cooperation and fixation, and mutually unlocking, slide and relocking under external force.
- The intravenous infusion needle 2. needle safety as described in claim 1 bounces back, which is characterized in that two parts of the needle stand connect In T shape is similar to, the needle stand is provided with the first connection positioning region on another part of fin；The sliding connector It is provided with first sliding groove on one side, the first, second, and third holding section is provided in the first sliding groove, corresponding thereto another The second connection positioning region is provided on one side；Second sliding slot is provided on the one side of the pedestal, in the second sliding slot It is provided with the four, the 5th and the 6th holding section；The first connection positioning region and the first sliding groove and setting are described the The first, second, and third holding section on one sliding slot is corresponding, second connection positioning region and the second sliding slot and sets The the four, the 5th and the 6th holding section set in the second sliding slot is corresponding；By above-mentioned corresponding engaging, it can be achieved that the bottom Mutual assembly connection and fixation between seat, the sliding connector and the needle stand, and phase is realized under pull-back forces effect Mutually between unlock, slide and relock.
- The intravenous infusion needle 3. needle safety as described in claim 1 bounces back, which is characterized in that two parts of the needle stand connect In U-shaped or H-shaped is similar to, the needle stand is provided with the first connection positioning region on another part of the fin；The cunning It is provided with first sliding groove on the one side of follower link, the first, second, and third holding section is provided in the first sliding groove, with The second connection positioning region is provided on its opposite another side；Second sliding slot is provided on the one side of the pedestal, it is described The the four, the 5th and the 6th holding section is provided in second sliding slot；It first connection positioning region and the first sliding groove and sets The first, second, and third holding section set in the first sliding groove is corresponding, the second connection positioning region and described second Sliding slot and the four, the 5th and the 6th holding section being arranged in the second sliding slot are corresponding；It, can by above-mentioned corresponding engaging Realize the mutual assembly connection between the pedestal, the sliding connector and the needle stand and fixation, and the work in pull-back forces With the mutual unlock of lower realization, slides and relock.
- The intravenous infusion needle 4. needle safety as described in claim 1 bounces back, which is characterized in that two parts of the needle stand connect In T shape is similar to, the needle stand is provided with third sliding slot on another part of fin, and the is provided on the third sliding slot Seven and the 8th holding section；Third connection positioning region, the other side corresponding thereto are provided on the one side of the sliding connector The second connection positioning region is provided on face；It is provided with second sliding slot on the one side of the pedestal, is arranged in the second sliding slot There is the four, the 5th and the 6th holding section；On third connection positioning region and described needle stand another part on the sliding connector Third sliding slot and the 7th and the 8th holding section that is arranged on third sliding slot it is corresponding, the second connection positioning region and institute The the four, the 5th and the 6th holding section stating second sliding slot and being arranged in the second sliding slot is corresponding；Pass through above-mentioned correspondence Engage mutual assembly connection and fixation, it can be achieved that between the pedestal, the sliding connector and the needle stand, and is pulling back Mutual unlock is realized under the action of power, is slided and is relocked.
- The intravenous infusion needle 5. needle safety as described in claim 1 bounces back, which is characterized in that two parts of the needle stand connect In U-shaped or H-shaped is similar to, the nine, the tenth and the 11st holding section are provided on the shaft of another part of the needle stand；Institute It states and is provided with the 4th and the 5th connection positioning region on the one side of sliding connector, the 4th and the 5th connection positioning region and institute State needle stand shaft and be set on the shaft the nine, the tenth and the 11st holding section it is corresponding, the sliding connects The second connection positioning region is provided on the another side of fitting；It is provided with second sliding slot on the one side of the pedestal, described The four, the five, the 6th holding sections are provided on two sliding slots；The second connection positioning region and the second sliding slot and setting exist The the four, the 5th and the 6th holding section in second sliding slot is corresponding；It is by above-mentioned corresponding engaging, it can be achieved that the pedestal, described Mutual assembly connection and fixation between sliding connector and the needle stand, and mutual solution is realized under pull-back forces effect It locks, slide and relocks.
- The intravenous infusion needle 6. needle safety as claimed in claim 2 or 4 bounces back, which is characterized in that the pedestal hollow tube Pipe face is equipped with longitudinal crack.
- The intravenous infusion needle 7. needle safety as claimed in claim 3 or 5 bounces back, which is characterized in that the hollow tube of the pedestal Pipe face be closing structure.
- The intravenous infusion needle 8. needle safety as claimed in claim 2 bounces back, which is characterized in that the sliding connector is substantially Cuboid, the one side of the cuboid is provided with hollow first sliding groove, the shape size of the first sliding groove with it is described The head of first connection positioning region is adapted；Described first sliding groove one end is openning shape, and the other end is silent shape, described silent It is formed with first through hole on the end face at end, when the first connection positioning region of the needle stand enters cunning from the first sliding slot opening end Slot and when sliding axially, first connection positioning region is set at the sliding slot one side in the axially displaced of the sliding slot On one or more limit clamping mechanisms limits and locking；The sliding connector is provided with the second connection on another side Positioning region.
- The intravenous infusion needle 9. needle safety as claimed in claim 2 bounces back, which is characterized in that the one side of the pedestal is arranged There is hollow second sliding slot, the head that the shape size of the second sliding slot connect positioning region with described second is adapted；It is described Second sliding slot one end of pedestal one side is openning shape, and the other end is silent shape, and the is formed on the end face of the closed end Two through-holes, when the second connection positioning region of the sliding connector enters sliding slot from second sliding slot open end and slides axially When, the axially displaced one or more that is set at the sliding slot one side on of the second connection positioning region in the sliding slot Engage position-limit mechanism limit and locking.
- The intravenous infusion needle 10. needle safety as claimed in claim 8 bounces back, which is characterized in that the first sliding groove is close to be opened The first and second holding sections are provided on one section of mouthful end, when the first connection positioning region is from first sliding slot opening end quilt When being pushed into and being axially moveable, the bar portion of the first connection positioning region squeezes the first holding section and is located at sliding slot open end end using it Portion is easy to produce the characteristics of slight deformation and squeezes and slip over the first holding section, after the first connection positioning region slips over the first holding section, The recoverable force of first holding section, so that first connection positioning region can not do again and reversely move freely；Connect first It connects after positioning region slips over the first holding section and stops promoting, the first connection positioning region will stop and be limited at first engaging It cannot be moved freely between portion and second holding section.
- The intravenous infusion needle 11. needle safety as claimed in claim 10 bounces back, which is characterized in that the first sliding groove is close to close Third holding section is provided on one section of mouth end；When hand-held needle stand fin does axial direction to sliding connector first through hole direction When mobile, the bar portion of first connection positioning region is by squeezing second holding section and it being made to generate slight resilient deformation It is released to the limit of the first connection positioning region and is passed through, first connection positioning region slides through institute in the same way as described above After stating second and third holding section, described second and third holding section recoverable force so that it is described first connection positioning region without Method moves backward again, so that first connection positioning region is after sliding into setting position by snap lock again.
- The intravenous infusion needle 12. needle safety as claimed in claim 9 bounces back, which is characterized in that the second sliding slot is close to be opened One section of end of mouth is provided with the 4th and the 5th holding section, when second connection positioning region is pushed into from the second sliding slot open end And when sliding axially, the bar portion of the second connection positioning region is by squeezing the 4th holding section and being located at sliding slot open end end using it Portion is easy to produce the characteristics of slight deformation and slides through the 4th holding section, when the second connection positioning region slips over the 4th holding section Afterwards, the recoverable force of the 4th holding section so that second connection positioning region can not do again and reversely move freely, stopping after After continuous propulsion, the second connection positioning region will stop and be limited between the 4th holding section and the 5th holding section and cannot do certainly By moving axially.
- The intravenous infusion needle 13. needle safety as claimed in claim 9 bounces back, which is characterized in that the second sliding slot is close to close Mouth is provided with the 6th holding section on one section of end；It is described when hand-held needle stand fin axially moves to second through-hole direction The bar portion of second connection positioning region is by squeezing deformable flexible the 5th holding section realization unlock and passing through, second connection The 6th holding section is continued to move back and squeezed and pass through in the same way in positioning region, when second connection positioning region passes through institute After stating the 6th holding section, the recoverable force of the 6th holding section, so that second connection positioning region can not do reversed shifting again It is dynamic, so that second connection positioning region is relocked after sliding into setting position.
- The intravenous infusion needle 14. needle safety as described in claim 1 bounces back, which is characterized in that the equal position of sliding connector Between pedestal and the needle stand other side and one or more connection positioning regions by the way that its two sides is arranged in or sliding slot come realize with The assembly connection and fixation of the pedestal and the corresponding part of the needle stand, and unlock under external force, sliding and again Snap lock；Further, the sliding connector can also be nested in the sliding slot or cavity formed by pedestal or needle stand side simultaneously The connection with corresponding needle stand or base portion is realized by the one or more connection positioning regions being arranged on one side And engaging.
- The intravenous infusion needle 15. needle safety as described in claim 1 bounces back, which is characterized in that extend the needle stand side The fin and the junction of extension be provided with groove, notch or in whole laminated structure, the thickness of the sheet interconnecting piece ≤ 0.8mm, so that the junction of the fin and extension can radially do about 45 degree of deformation displacement or elasticity bending；Institute It states fin and rotary type connection structure can also be used in the needle stand extension.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720669422 | 2017-06-09 | ||
| CN2017206694227 | 2017-06-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208389097U true CN208389097U (en) | 2019-01-18 |
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ID=65065260
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720719956.6U Withdrawn - After Issue CN208389097U (en) | 2017-06-09 | 2017-06-20 | A kind of needle safety retraction intravenous infusion needle |
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| Country | Link |
|---|---|
| CN (1) | CN208389097U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107281587A (en) * | 2017-06-09 | 2017-10-24 | 王祖扬 | A kind of needle safety retraction intravenous infusion needle |
-
2017
- 2017-06-20 CN CN201720719956.6U patent/CN208389097U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107281587A (en) * | 2017-06-09 | 2017-10-24 | 王祖扬 | A kind of needle safety retraction intravenous infusion needle |
| CN107281587B (en) * | 2017-06-09 | 2024-01-05 | 重庆医药集团威逊医疗科技有限公司 | Intravenous infusion needle with needle capable of being retracted safely |
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| GR01 | Patent grant | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20220510 Address after: 401346 1-1 and 1-2, building 1, No. 16, Shigui Avenue, Jieshi Town, Banan District, Chongqing Patentee after: Chongqing pharmaceutical group Weixun Medical Technology Co.,Ltd. Address before: 200336 Room 301, No. 25, Lane 99, huangjincheng Road, Changning District, Shanghai Patentee before: Wang Zuyang |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20190118 Effective date of abandoning: 20240105 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20190118 Effective date of abandoning: 20240105 |