CN105880256A - Needle recovery device, needle holding assembly and recovery pipe assembly - Google Patents
Needle recovery device, needle holding assembly and recovery pipe assembly Download PDFInfo
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- CN105880256A CN105880256A CN201410783533.1A CN201410783533A CN105880256A CN 105880256 A CN105880256 A CN 105880256A CN 201410783533 A CN201410783533 A CN 201410783533A CN 105880256 A CN105880256 A CN 105880256A
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- piston rod
- recovering pipe
- internal recovering
- needle holder
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- 238000011084 recovery Methods 0.000 title claims abstract description 83
- 230000006835 compression Effects 0.000 claims description 30
- 238000007906 compression Methods 0.000 claims description 30
- 230000002093 peripheral effect Effects 0.000 claims description 18
- 230000000712 assembly Effects 0.000 claims 2
- 238000000429 assembly Methods 0.000 claims 2
- 210000002445 nipple Anatomy 0.000 claims 1
- 238000000926 separation method Methods 0.000 abstract description 7
- 239000008280 blood Substances 0.000 description 41
- 210000004369 blood Anatomy 0.000 description 41
- 238000012360 testing method Methods 0.000 description 7
- 238000010241 blood sampling Methods 0.000 description 6
- 238000009434 installation Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 241000208340 Araliaceae Species 0.000 description 2
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 2
- 235000003140 Panax quinquefolius Nutrition 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 235000008434 ginseng Nutrition 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000036961 partial effect Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 210000003462 vein Anatomy 0.000 description 2
- 241000406668 Loxodonta cyclotis Species 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004820 blood count Methods 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000007937 lozenge Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
Classifications
-
- 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
- A61B5/153—Devices specially adapted for taking samples of venous or arterial blood, e.g. with syringes
- A61B5/154—Devices using pre-evacuated means
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Engineering & Computer Science (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Vascular Medicine (AREA)
- Anesthesiology (AREA)
- Physics & Mathematics (AREA)
- Biophysics (AREA)
- Pathology (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Abstract
The invention discloses a needle recovery device, a needle holding assembly and a recovery pipe assembly. The needle holding assembly and the recovery pipe assembly are used for recovering needles. The needle holding assembly comprises a connector, a needle holder cylinder, a connector seat, a first separation component and clamping components formed on the connector. The recovery pipe assembly comprises an external recovery pipe, an internal recovery pipe, a compressed spring, a sliding part, a piston rod component and clamping components formed on the piston rod component. According to the needle recovery device, the needle holding assembly and the recovery pipe assembly, when the recovery pipe assembly gets close to the connector in the needle holder cylinder, a pair of clamping components fixes the connector and the piston rod component together, and then the first separation component separates the piston rod component from the internal recovery pipe; as a result, the compressed spring is released, and under the action of tensile force of the compressed spring, the piston rod component with the connector where a needle is fixed is recovered into the internal recovery pipe; and accordingly, accidental stabbing caused by the needle is prevented.
Description
Technical field
The present invention relates to syringe needle retracting device and for reclaiming the needle holder assembly of syringe needle and returning
Closed tube assembly.
Background technology
Analyzed health condition or the cause of disease judging the detected objects such as people by blood count, be a kind of
The most universal medical practice.To this end, it is right firstly the need of being gathered by inspection by blood-taking device
The such as venous blood of elephant.A kind of typical blood-taking device includes blood taking needle, needle holder and can
Automatically the vacuum test tube of blood is extracted by blood taking needle.When blood sampling, first pass through joint
Blood taking needle is fixed on the plinth of needle holder, then detected object is carried out venipuncture,
Then being installed in needle holder by vacuum test tube, then, venous blood is in vacuum test tube
Automatically flow in vacuum test tube under the effect of vacuum.If needing multi collect blood, then
The vacuum test tube having adopted blood can be taken off, then use pipe then to take a blood sample by new vacuum.
Complete all to take a blood sample after work, blood taking needle is extracted from the vein of detected object.
Utilizing above-mentioned blood-taking device, after blood sampling work completes, blood taking needle is still arranged on and holds
On pin device, and it is dropped together with needle holder in this state.In this case,
Nurses or cleanup crew subsequently are likely exposed to outer blood taking needle and stab, and
Likely it is infected.
Summary of the invention
In order to prevent hemostix of the prior art its blood taking needle exposed after having taken a blood sample from making
Becoming accidental puncture, the invention provides a kind of syringe needle retracting device, it includes needle holder assembly
With recovery tube assembly.Needle holder assembly include the joint for fixed needle, hollow hold pin
Device cylinder and the plinth for anchor tip separably, plinth is formed at needle holder cylinder
One end.Recovery tube assembly can be put in needle holder cylinder, and includes: outside recovery tube,
It has open end and closes end；Internal recovering pipe, its have the first open end and
Second open end, in internal recovering pipe is at least partially recessed into outside recovery tube and with outward
Portion's recovery tube is fixing to be connected；Compression spring, its externally-located recovery tube and internal recovering pipe it
Between, one end of compression spring is fixedly attached to internal recovering pipe；Sliding part, it is at least part of
Be contained in internal recovery tube in and can the other end of backstop compression spring；With piston rod structure
Part, it has the first end of the first open end being detachably fastened to internal recovering pipe
With the second end engaged in internally positioned recovery tube and with sliding part.
First pair of fastened component is respectively formed on joint and the first end of piston rod component
On, when recovery tube assembly close joint in needle holder cylinder, first pair of fastened component can
Engaging is to be fixed together joint and piston rod component.
First separating member is formed at plinth side and the joint alternative one of needle holder cylinder
On, when recovery tube assembly close joint in needle holder cylinder, the first separating member can connect
Close the first end of piston rod component and drive first end and the internal recovering of piston rod component
First open end of pipe separates.
The relative position of first pair of fastened component and the first separating member is set to when first to card
After closing component engaging, the first separating member engaging piston bar component.
Present invention also offers a kind of needle holder assembly for reclaiming syringe needle, it includes above-mentioned
Joint, needle holder cylinder, plinth, the first separating member and described first to engaging structure
Part is formed at the fastened component on joint.
Present invention also offers a kind of recovery tube assembly for reclaiming syringe needle, it includes above-mentioned
Outside recovery tube, internal recovering pipe, compression spring, sliding part, piston rod component and
Described first pair of fastened component is formed at the fastened component on piston rod component.
According to the present invention, when recovery tube assembly close joint in needle holder cylinder, first is right
Joint and piston rod component are fixed together by fastened component, and the first separating member will be lived subsequently
Stopper rod component separates with recovery tube, and then, compression spring is released, drawing in compression spring
Under power effect, piston rod component is recovered with the joint of the syringe needle being fixed with such as blood taking needle
In recovery tube, thus prevent the accidental puncture that syringe needle causes.
Accompanying drawing explanation
Fig. 1 is that the syringe needle retracting device according to one embodiment of the present invention is reclaiming beginning
Front sectional view.
Fig. 2 is the top view of the needle holder cylinder according to one embodiment of the present invention.
Fig. 3 is the sectional view that III-III intercepts along Fig. 2.
Fig. 4 is the sectional view that IV-IV intercepts along Fig. 2.
Fig. 5 is the top view of the joint according to one embodiment of the present invention.
Fig. 6 is the sectional view that VI-VI intercepts along Fig. 5.
Fig. 7 is the sectional view that VII-VII intercepts along Fig. 5.
Fig. 8 is the longitudinal sectional view of the recovery tube assembly according to one embodiment of the present invention.
Fig. 9 is the longitudinal sectional view of the internal recovering pipe according to one embodiment of the present invention.
Figure 10 is the axonometric chart of the internal recovering pipe of Fig. 9.
Figure 11 is the axonometric chart of the sliding part according to one embodiment of the present invention.
Figure 12 is the front view of the piston component according to one embodiment of the present invention.
Figure 13 is the longitudinal sectional view of piston component shown in Figure 12.
Figure 14-17 is the schematic diagram that the syringe needle retracting device according to the present invention reclaims blood taking needle.
Detailed description of the invention
The syringe needle retracting device of the present invention is explained below with reference to accompanying drawings as a example by reclaiming blood taking needle
Structure and operation principle.It will be understood, however, to one skilled in the art, that the present invention is not only
It is only limitted to reclaim blood taking needle, it is also possible to be applied to other syringe needles needing to reclaim.
Fig. 1 is the syringe needle retracting device sectional view before reclamation begins of the present invention.Diagram
Syringe needle retracting device include needle holder assembly 1 and recovery tube assembly 2.Needle holder assembly 1
Including joint 10 and the needle holder of hollow for fixing blood taking needle 3 (seeing Figure 14～17)
Cylinder 11 and be formed at one end (front end, left end in figure) of needle holder cylinder 11 for dividing
The plinth 12 of liftoff anchor tip 10.
Outside recovery tube 20 that recovery tube assembly 2 includes putting in needle holder cylinder 11, interior
Portion's recovery tube 21, compression spring 22, sliding part 23 and piston rod component 24.Outside recovery
Pipe 20 includes open end 201 and closes end 202.Internal recovering pipe 21 is at least in part
Inside externally-located recovery tube 20, and there is the first open end 211 and relative second
Open end 212.Piston rod component 24 includes being detachably fastened to internal recovering pipe
In the first end 241 of first open end 211 of 21 and internally positioned recovery tube 21
Two ends 242.Between the externally-located recovery tube of compression spring 22 20 and internal recovering pipe 21,
Its one end is connected to internal recovering pipe 21, and the other end is in compression by sliding part 23 backstop
State.The main body of sliding part 23 is arranged in internal recovering pipe 20, and it includes passing
On internal recovering pipe 20 longitudinal chute contact compression spring 22 one end projection and can
It is stuck in the card on the second end 242 of piston rod component 24.
According to the present invention, when reclaiming blood taking needle 3 (seeing Figure 14～17), joint 10 energy
Enough it is fixed together with piston rod component 24, and at piston rod component 24 and internal recovering pipe
After 21 separate, slide along longitudinal chute 213 (seeing Figure 10) at sliding part 23 thus discharge
Under the pulling force effect of compression spring 22, along with piston rod component 24 is drawn into internal returning together
Closed tube 21 is internal.
In the present invention, a component is formed on another component, has both included two components
It is that the situation of two single components also includes that two components are two composition portions of single component
Situation about dividing.What term " was fixed " is meant that the component combined is in normal work
In the case of can not separate.The meaning of term " separable " is extra suitable by applying
Power, can separate the component being fixed together；The meaning of " inseparable " is fixed on one
The component risen the most all can not separate or only by applying the biggest power even
Could separate by destroying.Term " front " or " afterwards " in expression orientation are relative to blood sampling
Time blood taking needle position for, be positioned at or towards blood taking needle side for " front ", away from blood sampling
Pin side is " afterwards ".And directional terminology " on ", D score, "left", "right" only
Be only for accompanying drawing for.
It is specifically described the syringe needle retracting device center tap according to the present invention below with reference to accompanying drawings
With fixing, the compression spring of fixing, the outside recovery tube of needle holder cylinder and internal recovering pipe,
Sliding part and the relativeness of piston rod component, piston rod component and internal recovering pipe fixing,
Joint and piston rod component fixing, piston rod component separates with internal recovering pipe, inside
Recovery tube closes with the position of the fixing of needle holder cylinder and two pairs of fastened components and separating member
System.
Joint is fixing with needle holder cylinder
Fig. 5,6,7 show the joint 10 according to a kind of detailed description of the invention of the present invention.Its
In, Fig. 5 is the top view of joint 10, Fig. 6 and Fig. 7 is along VI-VI respectively in Fig. 5
The sectional view intercepted with VII-VII.
Seeing Fig. 5 and 6, joint 10 includes the installation for installing blood taking needle being positioned at centre
Portion 100 and the department of assembly 101 round installation portion 100.The concrete shape of installation portion 100 and
Structure depends on blood taking needle to be installed, it is possible to use can install arbitrarily in prior art
The structure of blood taking needle, the present invention does not has any restriction for installation portion.Department of assembly 101 is used for
Coordinate with the plinth 12 of needle holder cylinder 11, be fixed on plinth 12 in a detachable fashion.
This separable fixed form can be such as the outer peripheral face of the department of assembly 101 at joint 10
And interference fit and/or male-female between the inner surface of plinth 12 coordinate.Art technology
Personnel are appreciated that separable fixing produced power, and its size should be more than piercing through example
Such as the power needed for the blood vessels such as vein, to ensure being normally carried out of blood sampling；Return less than outside simultaneously
Produced pulling force when compression spring 22 between closed tube 20 and internal recovering pipe 21 is released,
To ensure that blood taking needle can be recycled in internal recovering pipe 21.
Fig. 2,3 and 4 are illustrated that the needle holder cylinder according to a kind of detailed description of the invention of the present invention
11.Wherein, Fig. 2 is the top view of needle holder cylinder 11, Fig. 3 and Fig. 4 is respectively along Fig. 2
The sectional view that middle III-III and IV-IV intercepts.
See Fig. 3 and 4, in order to prevent blood taking needle from undesirably falling off at removal process center tap 10
In the outside of needle holder cylinder 11, can arrange in the front end of the plinth 12 of needle holder cylinder 11
Backstop 13.Backstop 13 can be from the inner surface of plinth 12 (or needle holder cylinder 11) to
In prominent flange, can be formed to be the form of a circle or be circumferentially distributed some sections
There is rear end surface 130 backwards (in figure down).Accordingly, Fig. 6, joint 10 are seen
Department of assembly 101 be formed with front-end surface 102 (right side in figure).
See Fig. 1, when joint 10 is installed in place in plinth 12, before joint 10
The rear end surface 130 of end surfaces 102 and backstop 13 against, thus prevent joint 10 unexpected
Come off.
Outside recovery tube is fixing with internal recovering pipe
Fig. 8 shows the recovery tube assembly 2 according to a kind of detailed description of the invention of the present invention.Outside
The closing of recovery tube 20 be provided with inside end 202 for clamp internal recovering pipe 21 second
The clamping device of open end 212.Clamping device includes from the inner face closing end 202
Be parallel to longitudinal tube wall of outside recovery tube 20 prominent and with longitudinal tube wall cylindrical part separately
203 and longitudinal inner surface of tube wall from outside recovery tube 20 near closing court at end 202
Wedge-shaped part 204 to the inner face progressive additive closing end 202.Wedge-shaped part 204 can be
One circle or the form of be circumferentially distributed some sections.Wedge-shaped part 204 can be to return with outside
Closed tube 20 is integral part of, it is also possible to be single wedge.Wedge-shaped part 204 and cylindrical part
Leaving gap 205 between 203, the diameter in gap 205 is substantially equal to internal recovering pipe 21
The diameter of the second open end 212, in order to the second open end 212 of internal recovering pipe 21
Can be clamped in gap 205.
Being provided with at the first open end 211 from vertical of longitudinal tube wall of internal recovering pipe 21
To outer surface of tube wall notch cuttype flange 206 outwardly, can be a circle or circumferentially divide
The form of some sections of cloth, is formed with backwards first rear end surface 207 of (towards the right side in figure)
With the second rear end surface 208, the first rear end surface 207 and the opening of outside recovery tube 20
The end face in portion 201 abuts.By the second open end 212 of internal recovering pipe 21 is clamped
Closing in the gap 205 formed inside end 202 at outside recovery tube 20, and outside making
The end face of the open end 201 of portion's recovery tube 20 and the notch cuttype flange of internal recovering pipe 21
First rear end surface 207 of 206 abuts so that outside recovery tube 20 and internal recovering pipe 21
It is stably fixed together.
The inside that Fig. 9 and Figure 10 respectively illustrates according to a kind of detailed description of the invention of the present invention is returned
The sectional view of closed tube 21 and axonometric chart.Internal recovering pipe 21 is at the close ladder of longitudinal tube wall
Two that offer diametrically contraposition at type flange 206 extend to second (towards the right side in figure) backwards
Longitudinal chute 213 of open end 212.
Compression spring, sliding part and the relativeness of piston rod component
See Fig. 8, the externally-located recovery tube of compression spring 22 20 and internal recovering pipe 21 it
Between, its one end is fixedly attached to the second rear end of the notch cuttype flange 206 of internal recovering pipe 21
Surface 208, the other end is maintained at compressive state by sliding part 23.
Figure 11 shows the solid of the sliding part 23 according to a kind of detailed description of the invention of the present invention
Figure.Sliding part 23 include main body 231, autonomous agent 231 outer surface the most outside
Prominent a pair projection 232 and the inner surface along main body 231 be circumferentially arranged multiple from
Inner surface radial direction tilts the general conical card 233 of projection.Main body 231 be preferably tubular and its
Diameter is less than or equal to the internal diameter of internal recovering pipe 21.The quantity of projection 232 and internal recovering
The quantity of longitudinal chute 213 of pipe 21 is corresponding, and is not limited to two.Sliding part 23
Projection 232 in internal recovering pipe 21 through the longitudinal chute 213 on internal recovering pipe 21
With the end thereof contacts of compression spring 22, and solid with internal recovering pipe 21 at piston rod component 24
In the case of Ding, compression spring 22 is maintained at compressive state.When installing sliding part 23,
Make the projection 232 of sliding part 23 at the second open end 212 of internal recovering pipe 21 with
Longitudinal chute 213 alignedly slips into longitudinal chute 213.The free end 234 of card 233
It is stuck at the second end 242 of piston rod component 24, thus at piston rod component 24 with interior
In the case of portion's recovery tube 21 is fixing, sliding part 23 is also fixed relative to internal recovering pipe 21,
And then by projection 232, compression spring 22 is maintained at compressive state.Can between card 233
To form multiple radial slots 235, thus be formed as easily deformable cantilever design to facilitate and to live
The second end 242 of stopper rod component 24 engages.It addition, card 233 can radially incline
Tiltedly projection, but can radially directly stretch, as long as can be with the second end of piston rod component 24
242 engage.
Piston rod component is fixing with internal recovering pipe
Seeing Figure 12 and 13, the rear end (lower end in figure) of the outer peripheral face of annular wall 243 is formed
Shoulder 248.Referring also to Fig. 9, in the first opening 212 side of internal recovering pipe 21
Step 214 is defined on inner surface.The external diameter of the annular wall 243 of piston rod component 24 is more than
The internal diameter of internal recovering pipe 21, so, as it is shown in figure 1, when including piston rod component 24
When installing in place on portion's recovery tube 21, the shoulder 248 of annular wall 243 leans against internal recovering pipe 21
On interior step 214, thus stop the compression spring 22 in recovery tube assembly 2 by piston rod
Component 24 draws in internal recovering pipe 21.
The shoulder 248 of annular wall 243 and the step 214 of internal recovering pipe 21, constitute for
The first end 241 of piston rod component 24 is fixed to the first opening of internal recovering pipe 21
The fixing component of end 211.
Fixing component can also be that arbitrarily other can provide the resistance more than compression spring pulling force
Structure.Such as, alternatively, can return with internal at the outer peripheral face of annular wall 243
Between one section of inner peripheral surface of the first open end 211 side of closed tube 21 formed interference fit and
/ or male-female structure (not shown).In this case, the first end of piston rod component 24
Portion 241 can not be the shape of annular wall, but can be any can directly to put into inside
Shape in recovery tube 21.
Joint is fixing with piston rod component
See Fig. 1,5～7.In the shown embodiment, the department of assembly 101 of joint 10 includes
Two relative cylinder partials 103 (Fig. 5 and 6), shape between two cylinder partials 103
Become to have flat member 104 (Fig. 5 and 7).Flat member 104 can be from joint 10
Installation portion 100 integrally extends out, it is possible to bend from the extended configuration shown in Fig. 5 and 7
Become and form the case of bending of substantially complete cylinder with department of assembly 101 shown in Fig. 1.Work as joint
10 when being arranged in plinth 12, and flat member 104 stretches out at plinth 12 towards rear end
Outside.The part exceeding plinth 12 of flat member 104 is formed fastened component 105.
As it is shown in fig. 7, fastened component 105 includes guide surface 106 and the court of the wedge shape towards rear end
The snap-latch surface 107 (under the case of bending shown in Fig. 1 or installment state) of forward end.Engaging
Face 107 is relative to the surface less perpendicular of flat member 104 or acutangulates so that engaging structure
Part 105 is formed as hook-shaped.
Alternatively (not shown), joint 10 can not have flat member 104.
At this moment, the department of assembly 101 of joint 10 partly or entirely can extend rearward beyond needle holder
The plinth 12 of cylinder 11, forms hook in the part exceeding plinth 12 of department of assembly 101
The fastened component of shape.
See Figure 12 and 13.Figure 12 is the front view of piston rod component 24, and Figure 13 is alive
The longitudinal sectional view of stopper rod component 24.The piston rod component 24 of diagram includes first end 241,
First end 241 is the form of annular wall 243.See Figure 13, the inner circumferential of annular wall 243
The front end in face is formed with the guide surface 244 of wedge shape, is formed with snap-latch surface 245 in its back-end.Draw
Guide face 244 and snap-latch surface 245 (or inner peripheral surface part of annular wall 243) constitute piston
The fastened component 246 of bar component 24.Fastened component 105 with the joint 10 being outlined above
Similar, the fastened component 246 of piston rod component 24 is again formed as hook-shaped.
When reclaiming blood taking needle, recovery tube assembly 2 (sees Fig. 1 in injecting needle holder cylinder 11
With 15), along with recovery tube assembly 2 close joint 10, piston rod in needle holder cylinder 11
The guide surface 244 of the fastened component 246 of component 24 and the fastened component 105 of joint 10
Guide surface 106 contacts and guides two fastened components mutually to cross so that two fastened components
Snap-latch surface 245,107 facing with each other and be fastened togather, also make joint 10 He simultaneously
Piston rod component 24 is fixed together.Then, joint 10 and blood taking needle thereon 3 (ginseng
See Figure 17) can be drawn into together in internal recovering pipe 21 along with piston rod component 24.
The fastened component 246 of piston rod component 24 is constituted with the fastened component 105 of joint 10
First pair of fastened component of syringe needle retracting device of the present invention.
The guide surface 106,244 of above-mentioned fastened component is wedge shape, its purpose is to be easy to card
Close mutually crossing of component.For this purpose it is proposed, " wedge shape " should be broadly understood to include down
Angle or the situation of rounding.It will be understood by those skilled in the art that one of them guide surface is
Wedge shape is also possible.It addition, one of them hook-shaped fastened component can be hole or groove or platform
The edge on rank etc. is formed.
In order to further facilitate mutually crossing of fastened component, preferably make at least one
Fastened component (or the component at fastened component place) is susceptible to deformation.Such as Figure 12 and 13
Shown in, annular wall 243 can form multiple cannelure 247 so that adjacent cannelure 247
Between section annular wall 243 be formed as cantilever design and easily deformable.
Piston rod component separates with internal recovering pipe
Seeing Fig. 3 and Fig. 4, the syringe needle retracting device (or needle holder assembly 1) of the present invention is also
Including separating member 14 (the first separating member).The separating member 14 of diagram is held for being formed at
The rear end of the plinth 12 of pin device cylinder 11 component that (lower end in figure) is prominent backward, its
There is tip 141 and the parting surface 142 of the wedge shape inside most advanced and sophisticated 141.
With the separating member 14 of needle holder cylinder 11 accordingly, see Figure 12 and Figure 13, make
For the outer peripheral face front end of annular wall 243 of first end 241 of piston rod component 24 (in figure
Upper end) it is formed with the parting surface 249 of wedge shape.Parting surface 249 or the outer peripheral face of annular wall 243
Front end constitutes separating member (the second separation structure of the first end 241 of piston rod component 24
Part).
See Fig. 1, when reclaiming blood taking needle, along with recovery tube assembly 2 near joint 11 (or
Plinth 12), annular wall 243 is injected at the tip 141 of the separating member 14 of needle holder cylinder 11
Between outer peripheral face and internal recovering pipe 21 so that the parting surface 142 of separating member 14 and ring
The parting surface 249 of shape wall 243 engages, subsequently by the extruding between lozenges, annular wall
243 deform and external diameter minimizing, so that the shoulder 248 of its outer peripheral face rear end and internal recovering
Step 214 in pipe 21 separates.At this moment, piston rod component 24 drawing in compression spring 22
Enter under power effect in internal recovering pipe 21.
In above process, in order to avoid between internal recovering pipe 21 and needle holder cylinder 11
May interfere with and work with beneficially separating member 14, can separating member 14 with separate
One is formed substantially between side and the inner surface of internal recovering pipe 21 that face 142 is contrary
The space 143 (Fig. 4) of annular.
It will be understood by those skilled in the art that the separation of the separating member 14 of needle holder cylinder 11
Face 142 need not be all wedge shape with the parting surface 249 of the annular wall 243 of piston rod component 24,
But can be with only one of which parting surface as wedge shape.
As shown in Figures 12 and 13, the multiple cannelures 247 annular wall 243 formed so that
Section annular wall 243 between adjacent cannelure 247 is formed as cantilever design and easily deformable.
This deformation is equally beneficial for annular wall 243 and the internal recovering pipe 21 of piston rod component 24
The separation of the first open end 211.
Although in the shown embodiment, separating member 14 is formed on needle holder cylinder 11,
But, it will be understood by those skilled in the art that separating member can also be formed on joint 10
(not shown).
When the fixing component of the present invention is not shoulder/stepped form and it is formed in piston rod component 24
First end 241 outer peripheral face and one section of inner peripheral surface of internal recovering pipe 20 between interference join
When conjunction and/or male-female structure, the first separation structure that needle holder cylinder 11 or joint 10 are formed
Part 14 is without wedge structure, as long as its prominent length is suitable for leaning at internal recovering pipe 21
The first end 241 that can promote piston rod component 24 when proximity 10 or plinth 12 leads to
That section crossing internal recovering pipe 21 forms the inner peripheral surface of interference fit and/or male-female structure i.e.
Can.I.e., it is possible to the second separating member not independently formed, in other words, piston rod component
The first end 241 of 24 is also simultaneously as the second separating member.
Internal recovering pipe is fixing with needle holder cylinder
At the end of reclaiming, blood taking needle is accommodated in (ginseng in internal recovering pipe 21 with joint 10
See Figure 17).At this moment, for the accident thorn preventing blood taking needle from causing preferably, more easily
Wound, preferably makes needle holder cylinder 11 and recovery tube assembly 2 to be fixed together.
See Fig. 3, in the illustrated embodiment, in the front of needle holder cylinder 11
Fastened component 15 it is formed with on surface.Fastened component 15 can be in needle holder cylinder 11
The flange that surface protrudes inwardly from, flange can be a whole circle or circumferentially distributed some sections
Form, it include the wedge shape towards rear end (lower end in figure) guide surface 151 and towards
The snap-latch surface 152 of front end (upper end in figure).Snap-latch surface 152 is relative to the interior table of cylinder 100
Face (or outer surface) less perpendicular or acutangulate so that fastened component 15 is formed as hook-shaped.
With the fastened component 15 of needle holder cylinder 11 accordingly, as it is shown in figure 9, in inside
First open end 211 side of recovery tube 21 is formed with fastened component 215.Fastened component
215 can be flange outwardly on the outer surface of internal recovering pipe 21, and flange is permissible
One whole circle or the form of circumferentially distributed some sections, it includes towards rear end (in figure
Right-hand member) the guide surface 217 of wedge shape of snap-latch surface 216 dough-making powder forward end (left end in figure).
Snap-latch surface 216 relative to internal recovering pipe 21 outer peripheral face less perpendicular or formed acute angle, make
Obtain fastened component 215 and be formed as hook-shaped.
The fastened component 15 of needle holder cylinder 11 and fastened component 215 structure of internal recovering pipe 21
Become second pair of fastened component of the present invention.
See Fig. 1, when reclaiming blood taking needle, along with recovery tube assembly 2 is near needle holder cylinder
The plinth 12 of 11, the fastened component 15 of needle holder cylinder 11 and the card of internal recovering pipe 21
Closing component 215 to engage, both wedge-shaped guide surfaces 151 and 217 contact with each other and guide two
Individual fastened component is mutually crossed, afterwards, the snap-latch surface 152 and 216 of two fastened components that
This is relatively fastened togather, it is achieved thereby that needle holder cylinder 11 and internal recovering pipe 21
Fixing.
Mutually cross to further facilitate second pair of fastened component, so that at least one
The component at fastened component or its place is more prone to deformation.See Fig. 2 and 3, it is preferable that hold
The part being formed with fastened component 15 of pin device cylinder 11, is formed with the groove of general " U " shape
16 so that fastened component 15 is formed as cantilever design and is thus susceptible to deformation.Real as replacing
Executing mode, or combine with such scheme, the inside that is formed at shown in fig .9 is returned
In fastened component 215 at first open end 211 of closed tube 21, can generally along vertical
To forming groove (not shown) so that fastened component 215 is formed as cantilever design the easiest
In deformation.
As above-mentioned first pair of fastened component 105,246, the second pair of fastened component 15,
205 without all having the guide surface of wedge shape.
In the embodiment shown in Fig. 3, can be by forming U-lag 16, at needle holder
Fastened component 15 and separating member 14, i.e. fastened component 15 and separation is concurrently formed on cylinder 11
Component 14 is formed by the marginal portion on groove both sides respectively.
Two pairs of fastened components and the position relationship of separating member
In order to ensure that blood taking needle reliably can be drawn into internal returning with piston rod component 24
In closed tube 21, internal recovering pipe 21 and needle holder cylinder 11 is preferably simultaneously made to be fixed on one
Rise, as it is shown in figure 1, when joint 10 is installed in place, the fastened component 105 of joint 10
And the fastened component 15 of needle holder cylinder 11 exceedes needle holder cylinder the most backwards (towards the right side in figure)
The separating member 14 of 11.In more general terms, first pair of fastened component, second pair of fastened component
It is set to the relative position of the first separating member when first pair of fastened component and second is to engaging
After component engaging (i.e. snap-latch surface is facing with each other), the first separating member just drives piston rod structure
Part separates.
Describe referring to Figure 14～Figure 17 and utilize the syringe needle retracting device of the present invention to reclaim blood sampling
The operating process of pin.
First blood taking needle 3 is installed on needle holder assembly 1 according to mode of the prior art.
Then, hand-held needle holder assembly 1 completes passages through which vital energy circulates puncture.Then, according to known in the art
Mode of operation, vacuum test tube is inserted in needle holder assembly 1, and under vacuum
It is automatically performed blood specimen collection.If needing to gather multiple blood sample, can according to prior art
Take off employing pipe as knowing, change new vacuum test tube and continue sampling.The most repeatedly,
Until collecting all blood samples of needs.
Then, recovery tube assembly 2 is injected in needle holder assembly 1.When recovery tube assembly 2
During close to the front end of needle holder assembly 1, owing to first pair of fastened component therein starts to engage
And produce certain resistance, at this moment continue to push ahead recovery tube assembly 2.At separating member and
Under the synergy of a pair fastened component, the compression spring in recovery tube assembly 2 is released,
Produce and blood taking needle is drawn in the pulling force in needle holder assembly 1/ recovery tube assembly 2.Then, may be used
To dispose the syringe needle retracting device containing used blood taking needle, without causing accidental puncture.
The concrete structure of the present invention is described above with reference to detailed description of the invention shown in the drawings,
It will be understood, however, to one skilled in the art, that specific descriptions above are Examples Propertiess,
Those skilled in the art are as described above, it is possible to make various modification and improvement, and not
Can depart from the scope of the present invention.
Claims (15)
1. a syringe needle retracting device, including:
Needle holder assembly (1), comprising:
Joint (10) for fixed needle；
The needle holder cylinder (11) of hollow；With
For fixing the plinth (12) of described joint (10) separably, described
Plinth (12) is formed at one end of described needle holder cylinder (11)；And
The recovery tube assembly (2) in described needle holder cylinder (11) can be put into, comprising:
Outside recovery tube (20), it has open end (201) and closes end (202)；
Internal recovering pipe (21), it has the first open end (211) and second and opens
Mouth end (212), internal recovering pipe (21) is at least partially recessed into outside recovery
Fix in pipe (20) and with outside recovery tube (20) and be connected；
Compression spring (22), its externally-located recovery tube (20) and internal recovering pipe
(21), between, one end of compression spring (22) is fixedly attached to internal recovering pipe (20)；
Sliding part (23), it is at least partially recessed in internal recovering pipe (20)
And can the other end of backstop compression spring (22)；With
Piston rod component (24), it has and is detachably fastened to internal recovering pipe (21)
The first end (241) of the first open end (211) and internally positioned recovery tube
(21) the second end (242) in and engaged with sliding part (23)；
Wherein, first pair of fastened component (105,246) is respectively formed on joint (10)
With on the first end (241) of piston rod component (24), when recovery tube assembly (2) exists
In needle holder cylinder (11) when joint (10), first pair of fastened component (105,246)
Can engage to be fixed together joint (10) and piston rod component (22)；
First separating member (14) is formed at the plinth (12) of needle holder cylinder (11)
On side and joint (10) alternative one, when recovery tube assembly (2) is in needle holder cylinder (11)
Interior when joint (10), the first separating member (14) can engaging piston bar component (24)
First end (241) and drive the first end (241) of piston rod component (24) with
First open end (211) of internal recovering pipe (21) separates,
First pair of fastened component (105,246) and the phase para-position of the first separating member (14)
Install and be set to after first pair of fastened component (105,246) engages, the first separating member (14)
Engaging piston bar component (24).
2. syringe needle retracting device as claimed in claim 1, wherein, outside recovery tube (20)
Closing end (202) inner side be provided with the second opening for clamping internal recovering pipe (21)
The clamping device of end (212), the first end (211) of internal recovering pipe (21) is attached
Closely it is provided with the outwardly prominent notch cuttype flange (206) from internal recovering pipe, outside
The open end (201) of recovery tube (20) and one end of compression spring (22) are fixed respectively
It is connected to notch cuttype flange (206).
3. syringe needle retracting device as claimed in claim 1, wherein, internal recovering pipe (21)
Being provided with longitudinal chute (213), sliding part (23) can be along longitudinal chute (213)
Slide.
4. syringe needle retracting device as claimed in claim 3, wherein, sliding part (23) wraps
Include the outwardly projection of main body (231), autonomous agent (231) projection (232),
And the card (233) of the inner surface project inward of autonomous agent (231), projection (232)
Longitudinal chute (213) the backstop compression spring (22) on internal recovering pipe (21) can be passed,
Card (233) can engage with the second end (242) of piston rod component (24).
5. syringe needle retracting device as claimed in claim 1, wherein, piston rod component (24)
First end (241) be annular wall (243).
6. syringe needle retracting device as claimed in claim 5, wherein, piston rod component (24)
Annular wall (243) be formed with multiple groove (247) so that the annular wall between adjacent slot
(243) part forms cantilever design.
7. syringe needle retracting device as claimed in claim 5, wherein, first pair of fastened component
(105,246) include the hook-shaped fastened component (105) that is formed on joint (10) and
The hook-shaped fastened component (246) being formed on piston rod component (24),
Fastened component (246) on piston rod component (24) includes being formed at annular wall (243)
The guide surface (224) of front end of inner peripheral surface and form the inner peripheral surface of annular wall (223)
The snap-latch surface (225) of rear end,
Fastened component (105) on joint (10) be formed at joint (10) beyond joint
In the part of seat (12), including towards the snap-latch surface (107) of front end and drawing towards rear end
Guide face (106).
8. syringe needle retracting device as claimed in claim 7, wherein, the card of joint (10)
Close at least one in the fastened component (246) of component (105) and piston rod component (24)
Guide surface be wedge shape.
9. syringe needle retracting device as claimed in claim 5, wherein,
Piston rod component (24) includes that the second separating member, the second separating member include being formed
At the parting surface (249) of front end of the outer peripheral face of annular wall (243),
First separating member (14) includes can be with the parting surface (249) of the second separating member
The parting surface (142) engaged,
The parting surface (142) of the first separating member (14) and the parting surface of the second separating member
(229) in, at least one is wedge shape.
10. syringe needle retracting device as claimed in claim 5, wherein,
Shape on the inner surface of the first open end (211) side of internal recovering pipe (21)
Become to have step (214),
It is formed with energy in the rear end of the outer peripheral face of the annular wall (243) of piston rod component (24)
Enough lean against the shoulder (248) on described step (214).
11. syringe needle retracting devices as claimed in claim 1, wherein, also include second to card
Closing component (15,215), second pair of fastened component (15,215) is respectively formed at and holds pin
On device cylinder (11) nipple seat (12) side and on internal recovering pipe (21), work as recovery
Pipe assembly (2) is in needle holder cylinder (11) when plinth (12), and second to engaging
Component (15,215) can engage and by needle holder cylinder (11) and internal recovering pipe (21)
It is fixed together, wherein, second pair of fastened component (15,215) and the first separating member (14)
Relative position be set to when, after the engaging of the second pair of fastened component (15,215), first separates
Component (14) engaging piston bar component (24).
12. syringe needle retracting devices as claimed in claim 11, it is characterised in that second is right
Fastened component (15,215) includes the hook-shaped engaging structure being formed in needle holder cylinder (11)
Part (15) and the hook-shaped fastened component (215) being formed on internal recovering pipe (21),
Fastened component (15) in needle holder cylinder (11) is by needle holder cylinder (11)
Flange on inner surface is formed, including the snap-latch surface (152) towards front end with towards rear end
Guide surface (151),
Fastened component (215) on internal recovering pipe (21) is by internal recovering pipe (21)
The first open end (211) side outer peripheral face on flange formed, including towards front end
Guide surface (217) and snap-latch surface (216) towards rear end.
13. syringe needle retracting devices as claimed in claim 12, wherein, needle holder cylinder (11)
In fastened component (215) on interior fastened component (15) and internal recovering pipe (21) extremely
The guide surface of few one is wedge shape.
14. 1 kinds of needle holder assemblies, are used for reclaiming syringe needle, and described needle holder assembly includes:
Joint (10) for fixed needle；
The needle holder cylinder (11) of hollow；
For the plinth (12) of anchor tip separably (10), plinth (12)
It is formed at one end of needle holder cylinder (11)；
Fastened component (105), its be formed at joint (10) beyond plinth (12)
In part；And
First separating member (14), it is formed at the plinth (12) of needle holder cylinder (11)
On side and joint (10) alternative one.
15. 1 kinds of recovery tube assemblies, are used for reclaiming syringe needle, and described recovery tube assembly includes:
Outside recovery tube (20), it has open end (201) and closes end (202)；
Internal recovering pipe (21), it has the first open end (211) and the second opening
Portion (212), internal recovering pipe (21) is at least partially recessed into outside recovery tube (20)
In and fixing with outside recovery tube (20) be connected；
Compression spring (22), its externally-located recovery tube (20) and internal recovering pipe (21)
Between, one end of compression spring (22) is fixedly attached to internal recovering pipe (20)；
Sliding part (23), it is at least partially recessed in internal recovering pipe (20) and energy
The other end of enough backstop compression springs (22)；
Piston rod component (24), it has and is detachably fastened to internal recovering pipe (21)
The first end (241) of the first open end (211) and internally positioned recovery tube (21)
The second end (242) that is interior and that engage with sliding part (23)；And
Fastened component (246), it is formed at the first end (241) of piston rod component (24)
On.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410783533.1A CN105880256B (en) | 2014-12-17 | 2014-12-17 | Syringe needle retracting device and needle holder component and recycling tube assembly |
| PCT/CN2015/097583 WO2016095818A1 (en) | 2014-12-17 | 2015-12-16 | Needle recovery device, needle holder assembly, and recovery tube assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410783533.1A CN105880256B (en) | 2014-12-17 | 2014-12-17 | Syringe needle retracting device and needle holder component and recycling tube assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105880256A true CN105880256A (en) | 2016-08-24 |
| CN105880256B CN105880256B (en) | 2018-10-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410783533.1A Active CN105880256B (en) | 2014-12-17 | 2014-12-17 | Syringe needle retracting device and needle holder component and recycling tube assembly |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN105880256B (en) |
| WO (1) | WO2016095818A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106725523A (en) * | 2017-02-27 | 2017-05-31 | 柳州市人民医院 | Blood drawing protection cap |
| CN111166433A (en) * | 2019-06-13 | 2020-05-19 | 中国人民解放军陆军第八十一集团军医院 | Hemostatic and analgesic liquid injection device for battlefield and field |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110650732A (en) | 2017-05-22 | 2020-01-03 | 强生消费者公司 | Lozenge dosage form |
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| CN2650706Y (en) * | 2003-11-19 | 2004-10-27 | 台杰生化科技股份有限公司 | Blood sampler with telescopic fastened needle |
| CN101606843B (en) * | 2009-07-22 | 2010-08-25 | 山东威高集团医用高分子制品股份有限公司 | Safety type blood collecting protecting sleeve |
| CN202477704U (en) * | 2011-12-31 | 2012-10-10 | 山东新华安得医疗用品有限公司 | Safe blood taking needle holder |
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| US20120095417A1 (en) * | 2010-10-18 | 2012-04-19 | Warsaw Orthopedic, Inc. | Surgical Delivery Instrument and Method |
| WO2013049873A1 (en) * | 2011-10-06 | 2013-04-11 | Vr Tek Pty Ltd | Tyre cutting and fragmenting device and method |
| CN203459384U (en) * | 2013-08-15 | 2014-03-05 | 王珍 | Infusion needle head collector |
| CN203900085U (en) * | 2014-05-26 | 2014-10-29 | 刘青竹 | Novel syringe needle recycling device |
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| CN106725523A (en) * | 2017-02-27 | 2017-05-31 | 柳州市人民医院 | Blood drawing protection cap |
| CN106725523B (en) * | 2017-02-27 | 2019-06-25 | 柳州市人民医院 | Blood drawing protection cap |
| CN111166433A (en) * | 2019-06-13 | 2020-05-19 | 中国人民解放军陆军第八十一集团军医院 | Hemostatic and analgesic liquid injection device for battlefield and field |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2016095818A1 (en) | 2016-06-23 |
| CN105880256B (en) | 2018-10-02 |
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