CN105880256B - Syringe needle retracting device and needle holder component and recycling tube assembly - Google Patents
Syringe needle retracting device and needle holder component and recycling tube assembly Download PDFInfo
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- CN105880256B CN105880256B CN201410783533.1A CN201410783533A CN105880256B CN 105880256 B CN105880256 B CN 105880256B CN 201410783533 A CN201410783533 A CN 201410783533A CN 105880256 B CN105880256 B CN 105880256B
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- component
- piston bar
- needle holder
- recovering pipe
- connector
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- 238000004064 recycling Methods 0.000 title claims abstract description 41
- 238000011084 recovery Methods 0.000 claims abstract description 52
- 230000002093 peripheral effect Effects 0.000 claims description 17
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 4
- 239000008280 blood Substances 0.000 description 50
- 210000004369 blood Anatomy 0.000 description 50
- 238000010241 blood sampling Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 230000001154 acute effect Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000036961 partial effect Effects 0.000 description 2
- 210000003462 vein Anatomy 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 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
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 239000007937 lozenge Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 239000007787 solid Substances 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
A kind of needle holder component the invention discloses syringe needle retracting device and for recycling syringe needle and recycling tube assembly.Needle holder component includes connector, needle holder cylinder, plinth, the first separating member and the fastened component being formed on connector；It includes external recovery tube, internal recovering pipe, compressed spring, sliding part, piston bar component and the fastened component being formed in piston bar component to recycle tube assembly.According to the present invention, when recycling tube assembly close connector in needle holder cylinder, connector and piston bar component are fixed together by a pair of of fastened component, subsequent first separating member detaches piston bar component with internal recovering pipe, then, compressed spring is released, under the pulling force effect of compressed spring, piston bar component is recycled to the connector for being fixed with syringe needle in internal recovering pipe, is surprisingly stabbed caused by prevent syringe needle.
Description
Technical field
Needle holder component the present invention relates to syringe needle retracting device and for recycling syringe needle and recycling tube assembly.
Background technology
The health condition or the cause of disease that the detected objects such as people are analyzed and determined by blood count are that a kind of extremely universal medical treatment is real
It tramples.For this purpose, firstly the need of such as venous blood for acquiring detected object by blood-taking device.A kind of typical blood-taking device includes
Blood taking needle, needle holder and the vacuum blood collection tube that blood can be extracted automatically by blood taking needle.It, first will by connector in blood sampling
Blood taking needle is fixed on the plinth of needle holder, is then carried out venipuncture to detected object, is then installed vacuum blood collection tube
Into needle holder, then, venous blood automatically flows under the action of vacuum in vacuum blood collection tube in vacuum blood collection tube.If necessary
Multi collect blood can then remove the vacuum blood collection tube for having adopted blood, then then be taken a blood sample using pipe with new vacuum.It completes complete
Portion takes a blood sample after work, and blood taking needle is extracted from the vein of detected object.
Using above-mentioned blood-taking device, after the completion of taking a blood sample work, blood taking needle is still mounted on needle holder, and this
It is dropped together with needle holder under state.In this case, Nurses or subsequent cleanup crew are possible to be exposed
Blood taking needle outside is stabbed, and is possible to be infected.
Invention content
Hemostix in the prior art its blood taking needle exposed after the completion of blood sampling causes surprisingly to stab in order to prevent, this hair
It is bright to provide a kind of syringe needle retracting device comprising needle holder component and recycling tube assembly.Needle holder component includes for fixing
The connector of syringe needle, hollow needle holder cylinder and the plinth for separably anchor tip, plinth are formed in needle holder cylinder
One end.Recycling tube assembly can be put into needle holder cylinder, and include：External recovery tube, with open end and closing
End；There is internal recovering pipe the first open end and the second open end, internal recovering pipe to be at least partially accommodated into outer
It is fixedly connected in portion's recovery tube and with external recovery tube；Compressed spring, between external recovery tube and internal recovering pipe, pressure
One end of contracting spring is fixedly attached to internal recovering pipe；Sliding part, is at least partially accommodated into internal recovering pipe and can
The other end of backstop compressed spring；With piston bar component, there is the first open end for being detachably fastened to internal recovering pipe
The second end engaged in the first end in portion and internally positioned recovery tube and with sliding part.
First pair of fastened component is respectively formed on connector and on the first end of piston bar component, when recycling tube assembly exists
When in needle holder cylinder close to connector, first pair of fastened component can engage so that connector and piston bar component to be fixed together.
First separating member is formed on the plinth side and connector alternative one of needle holder cylinder, when recycling tube assembly exists
When in needle holder cylinder close to connector, the first separating member is capable of the first end of engaging piston bar component and drives piston bar component
First end detached with the first open end of internal recovering pipe.
The relative position of first pair of fastened component and the first separating member is set as after first pair of fastened component engages, the
One separating member engaging piston bar component.
The present invention also provides a kind of for recycling the needle holder component of syringe needle comprising above-mentioned connector, needle holder cylinder,
The fastened component being formed in plinth, the first separating member and first pair of fastened component on connector.
The present invention also provides a kind of for recycling the recycling tube assembly of syringe needle comprising above-mentioned external recovery tube, interior
It is formed in piston bar component in portion's recovery tube, compressed spring, sliding part, piston bar component and first pair of fastened component
Fastened component.
According to the present invention, when recycle tube assembly in needle holder cylinder close to connector when, first pair of fastened component by connector and
Piston bar component is fixed together, and subsequent first separating member detaches piston bar component with recovery tube, then, compressed spring quilt
Release, under the pulling force effect of compressed spring, piston bar component is recovered with the connector for the syringe needle for being fixed with such as blood taking needle
Into recovery tube, surprisingly stabbed caused by prevent syringe needle.
Description of the drawings
Fig. 1 is the sectional view according to the syringe needle retracting device of one embodiment of the present invention before reclamation begins.
Fig. 2 is the vertical view according to the needle holder cylinder of one embodiment of the present invention.
Fig. 3 is the sectional view that III-III is intercepted along Fig. 2.
Fig. 4 is the sectional view that IV-IV is intercepted along Fig. 2.
Fig. 5 is the vertical view according to the connector of one embodiment of the present invention.
Fig. 6 is the sectional view that VI-VI is intercepted along Fig. 5.
Fig. 7 is the sectional view that VII-VII is intercepted along Fig. 5.
Fig. 8 is the longitudinal sectional view according to the recycling tube assembly of one embodiment of the present invention.
Fig. 9 is the longitudinal sectional view according to the internal recovering pipe of one embodiment of the present invention.
Figure 10 is the stereogram of the internal recovering pipe of Fig. 9.
Figure 11 is the stereogram according to the sliding part of one embodiment of the present invention.
Figure 12 is the front view according to the piston component of 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 of syringe needle retracting device recycling blood taking needle according to the present invention.
Specific implementation mode
Explain that structure and the work of the syringe needle retracting device of the present invention are former for recycling blood taking needle below with reference to accompanying drawings
Reason.It will be understood, however, to one skilled in the art, that the present invention is not limited only to recycling blood taking needle, can also be applied to other needs
The syringe needle to be recycled.
Fig. 1 is the sectional view of the syringe needle retracting device of the present invention before reclamation begins.The syringe needle retracting device packet of diagram
Include needle holder component 1 and recycling tube assembly 2.Needle holder component 1 includes the connector for fixing blood taking needle 3 (referring to Figure 14~17)
10 and hollow needle holder cylinder 11 and one end (front end, figure in left end) of needle holder cylinder 11 is formed in for separably fixing
The plinth 12 of connector 10.
Recycling tube assembly 2 includes external recovery tube 20, internal recovering pipe 21, the compression bullet that can be put into needle holder cylinder 11
Spring 22, sliding part 23 and piston bar component 24.External recovery tube 20 includes open end 201 and closing end 202.Internal recovering
Pipe 21 is at least partially situated at 20 inside of external recovery tube, and has the first open end 211 and the second opposite open end
Portion 212.Piston bar component 24 includes the first end for the first open end 211 that can be detachably fastened to internal recovering pipe 21
The second end 242 in portion 241 and internally positioned recovery tube 21.Compressed spring 22 is located at external recovery tube 20 and internal recovering pipe
Between 21, one end is connected to internal recovering pipe 21, the other end by sliding part 23 backstop by be in compressive state.Sliding part 23
Main body be arranged in internal recovery tube 20 comprising can pass through internal recovering pipe 20 on longitudinal chute contact compressed spring
The protrusion of 22 one end and the card that can be stuck on the second end 242 of piston bar component 24.
According to the present invention, when recycling blood taking needle 3 (referring to Figure 14~17), connector 10 can be fixed with piston bar component 24
Together, and after piston bar component 24 is detached with internal recovering pipe 21, in sliding slot 213 along longitudinal direction of sliding part 23 (referring to Figure 10)
Under the pulling force effect for sliding to discharge compressed spring 22, as piston bar component 24 is drawn into together in internal recovering pipe 21
Portion.
In the present invention, a component is formed on another component, is both two individual components including two components
The case where also include two components the case where being two component parts of single component.Term " fixation " is meant that be incorporated in
Component together cannot separate in the case of normal work.Term " separable " is meant by applying additionally appropriate
Power can separate the component being fixed together；The component that the meaning of " inseparable " is fixed together is in any case not
It can separate or could only be separated by applying very big power even by destroying.Indicate the term " preceding " or " rear " in orientation
It is to be located at or be " preceding " towards blood taking needle side when blood sampling for the position of blood taking needle, is far from blood taking needle side
" rear ".And for directional terminology "upper", "lower", "left", "right" are only for attached drawing.
It is specifically described consolidating for syringe needle retracting device center tap according to the present invention and needle holder cylinder below with reference to accompanying drawings
Fixed, external recovery tube and the fixation of internal recovering pipe, relativeness, the piston rod of compressed spring, sliding part and piston bar component
Component and the fixation of internal recovering pipe, the fixation of connector and piston bar component, piston bar component and internal recovering pipe detach, interior
Portion's recovery tube and the fixation of needle holder cylinder and the position relationship of two pairs of fastened components and separating member.
The fixation of connector and needle holder cylinder
Fig. 5,6,7 are shown according to a kind of connector 10 of specific implementation mode of the present invention.Wherein, Fig. 5 is bowing for connector 10
View, Fig. 6 and Fig. 7 are the sectional view intercepted along VI-VI and VII-VII in Fig. 5 respectively.
Referring to Figures 5 and 6, connector 10 includes positioned at intermediate for installing the mounting portion 100 of blood taking needle and around installation
The department of assembly 101 in portion 100.The concrete shape and construction of mounting portion 100 depend on blood taking needle to be installed, can use existing skill
The structure of blood taking needle can be arbitrarily installed, the present invention does not have any restrictions for mounting portion in art.Department of assembly 101 is used for and holds
The plinth 12 of needle device cylinder 11 coordinates, and is fixed on plinth 12 in a detachable fashion.This separable fixed form is for example
Can be that interference fit and/or male-female between the peripheral surface and the inner surface of plinth 12 of the department of assembly of connector 10 101 is matched
It closes.It will be understood by those skilled in the art that power caused by separable fixation, size, which should be more than, to be pierced through such as vein
Power needed for blood vessel, to ensure being normally carried out for blood sampling；Simultaneously less than the pressure between external recovery tube 20 and internal recovering pipe 21
Generated pulling force when being released of contracting spring 22, to ensure that blood taking needle can be recycled in internal recovering pipe 21.
Fig. 2,3 and 4 are shown according to a kind of needle holder cylinder 11 of specific implementation mode of the present invention.Wherein, Fig. 2 is to hold needle
The vertical view of device cylinder 11, Fig. 3 and Fig. 4 are the sectional views of the III-III and IV-IV interceptions along Fig. 2 respectively.
Ginseng is seen figures 3 and 4, and blood taking needle is undesirably fallen off in removal process center tap 10 in the outer of needle holder cylinder 11 in order to prevent
Backstop 13 can be arranged in the front end of the plinth 12 of needle holder cylinder 11 in face.Backstop 13 can be from (or the needle holder of plinth 12
The inwardly projecting flange of the inner surface of cylinder 11), can be a circle or several sections of form being circumferentially distributed, be formed with backwards
The rear end surface 130 of (in figure downward).Correspondingly, referring to Fig. 6, the department of assembly 101 of connector 10 is formed with front-end surface 102
(right side in figure).
Referring to Fig. 1, when installation is in place in plinth 12 for connector 10, front-end surface 102 and the backstop 13 of connector 10
Rear end surface 130 is against to prevent connector 10 from surprisingly falling off.
The fixation of external recovery tube and internal recovering pipe
Fig. 8 is shown according to a kind of recycling tube assembly 2 of specific implementation mode of the present invention.The blind end of external recovery tube 20
202 inside of portion is equipped with the clamping device of the second open end 212 for internal recovering pipe 21 to be clamped.Clamping device includes from envelope
The inner face in closed end portion 202 is parallel to longitudinal tube wall protrusion of external recovery tube 20 and the cylindrical part with longitudinal tube wall separately
203 and longitudinal inner surface of tube wall from external recovery tube 20 close closing end 202 from towards closing end 202 inner face
The wedge-shaped part 204 of progressive additive.Wedge-shaped part 204 can be a circle or several sections of form being circumferentially distributed.Wedge-shaped part 204
It can be integrally formed with external recovery tube 20, can also be individual wedge block.Between wedge-shaped part 204 and cylindrical part 203
There are gap 205, the diameter in gap 205 is substantially equal to the diameter of the second open end 212 of internal recovering pipe 21, so as to inside
Second open end 212 of recovery tube 21 can be clamped in gap 205.
Longitudinal tube wall of internal recovering pipe 21 is equipped with from longitudinal tube wall outwardly at the first open end 211
Step type flange 206 outstanding, can be a circle or several sections of form being circumferentially distributed, and be formed with (court in figure backwards
It is right) the first rear end surface 207 and the second rear end surface 208, the open end of the first rear end surface 207 and external recovery tube 20
201 end face abuts.By the closing end that the second open end 212 of internal recovering pipe 21 is clamped in external recovery tube 20
In the gap 205 that 202 insides are formed, and make end face and the internal recovering pipe 21 of the open end 201 of external recovery tube 20
First rear end surface 207 of stepped flange 206 abuts so that external recovery tube 20 is firmly fixed with internal recovering pipe 21
Together.
Fig. 9 and Figure 10 respectively illustrate according to a kind of sectional view of the internal recovering pipe 21 of specific implementation mode of the present invention and
Stereogram.Internal recovering pipe 21 (is schemed backwards in offer diametrically contraposition at stepped flange 206 two of longitudinal tube wall
It is middle towards the right side) extend to the longitudinal chute 213 of the second open end 212.
The relativeness of compressed spring, sliding part and piston bar component
Referring to Fig. 8, between external recovery tube 20 and internal recovering pipe 21, one end is fixedly attached to compressed spring 22
Second rear end surface 208 of the stepped flange 206 of internal recovering pipe 21, the other end are maintained at compression shape by sliding part 23
State.
Figure 11 is shown according to a kind of stereogram of the sliding part 23 of specific implementation mode of the present invention.Sliding part 23 includes master
Outer surface diametrically opposite outwardly projecting a pair of of protrusion 232 and the inner surface along main body 231 of body 231, autonomous agent 231
The multiple general conical cards 233 that projection is tilted from inner surface radial direction being circumferentially arranged.Main body 231 is preferably tubular and it is straight
Diameter is less than or equal to the internal diameter of internal recovering pipe 21.The quantity of the quantity of protrusion 232 and the longitudinal chute 213 of internal recovering pipe 21
It is corresponding, and it is not limited to two.The protrusion 232 of sliding part 23 is vertical on internal recovering pipe 21 from internal recovering pipe 21
To the end thereof contacts of sliding slot 213 and compressed spring 22, and it is fixed in piston bar component 24 and internal recovering pipe 21, it will
Compressed spring 22 is maintained at compressive state.When installing sliding part 23, make the protrusion 232 of sliding part 23 from internal recovering pipe 21
At second open end 212 longitudinal chute 213 is alignedly slid into longitudinal chute 213.The free end 234 of card 233 is stuck in
At the second end 242 of piston bar component 24, to fixed in piston bar component 24 and internal recovering pipe 21, sliding
Part 23 is also fixed relative to internal recovering pipe 21, and then compressed spring 22 is maintained at compressive state by protrusion 232.Card
Multiple radial slots 235 can be formed between 233, to be formed as easily deformable cantilever design to facilitate and piston bar component 24
The second end 242 engage.In addition, card 233 may not necessarily radial skew projection, but radially can directly stretch, as long as can
Engage with the second end 242 of piston bar component 24.
The fixation of piston bar component and internal recovering pipe
Referring to Figure 12 and 13, the rear end (lower end in figure) of the peripheral surface of annular wall 243 forms shoulder 248.Referring also to Fig. 9,
Step 214 is formd on the inner surface of 212 side of the first open end of internal recovery tube 21.The annular wall of piston bar component 24
243 outer diameter is more than the internal diameter of internal recovering pipe 21, in this way, as shown in Figure 1, when piston bar component 24 is on internal recovery tube 21
When installing in place, the shoulder 248 of annular wall 243 leans against on the step 214 in internal recovering pipe 21, to prevent recycling tube assembly 2
Interior compressed spring 22 draws in piston bar component 24 in internal recovering pipe 21.
The shoulder 248 of annular wall 243 and the step 214 of internal recovering pipe 21 are constituted for by the of piston bar component 24
One end 241 is fixed to the fixing component of the first open end 211 of internal recovering pipe 21.
Fixing component, which can also be arbitrary other, can provide the resistance structure more than compressed spring pulling force.For example, conduct
Alternative, can be in one section of inner circumferential of 211 side of the first open end of the peripheral surface and internal recovering pipe 21 of annular wall 243
Interference fit and/or male-female structure (not shown) are formed between face.In this case, the first end of piston bar component 24
241 can not be the shape of annular wall, but can be any shapes that can directly put into internal recovering pipe 21.
The fixation of connector and piston bar component
Referring to Fig. 1,5~7.In the shown embodiment, the department of assembly 101 of connector 10 includes two opposite cylinder partials
103 (Figures 5 and 6) are formed with flat member 104 (Fig. 5 and 7) between two cylinder partials 103.Flat member 104 can be
Integrally extend out from the mounting portion 100 of connector 10, can be bent to from extended configuration shown in Fig. 5 and 7 it is shown in FIG. 1 with
Department of assembly 101 forms the flexuosity of substantially complete cylinder.When connector 10 is mounted in plinth 12,104 court of flat member
It is stretched out to the back-end in 12 outside of plinth.Flat member 104 be more than plinth 12 part on form fastened component 105.
As shown in fig. 7, fastened component 105 includes towards the guide surface 106 of the wedge shape of rear end and snap-latch surface 107 towards front end (in Fig. 1
Shown under flexuosity or installation condition).Snap-latch surface 107 is generally vertically or at an acute angle relative to the surface of flat member 104,
So that fastened component 105 is formed as hook-shaped.
Alternatively (not shown), connector 10 can not have flat member 104.At this moment, the dress of connector 10
The plinth 12 that needle holder cylinder 11 can be extended rearward beyond with some or all of portion 101 is more than connector in department of assembly 101
Hook-shaped fastened component is formed on the part of seat 12.
Referring to Figure 12 and 13.Figure 12 is the front view of piston bar component 24, and Figure 13 is longitudinal section view of piston bar component 24
Figure.The piston bar component 24 of diagram includes first end 241, and first end 241 is the form of annular wall 243.Referring to Figure 13, ring
The front end of the inner peripheral surface of shape wall 243 is formed with the guide surface 244 of wedge shape, is formed with snap-latch surface 245 in its back-end.Guide surface 244
The fastened component 246 of piston bar component 24 is constituted with snap-latch surface 245 (or inner peripheral surface part of annular wall 243).With it is above
Described in connector 10 fastened component 105 it is similar, the fastened component 246 of piston bar component 24 is again formed as hook-shaped.
When recycling blood taking needle, recycling tube assembly 2 injects in needle holder cylinder 11 (referring to Fig. 1 and 15), with recovery tube group
Part 2 is in needle holder cylinder 11 close to connector 10, the card of the guide surface 244 and connector 10 of the fastened component 246 of piston bar component 24
The guide surface 106 for closing component 105 contacts and two fastened components is guided mutually to cross so that the snap-latch surface of two fastened components
245,107 is facing with each other and be fastened togather, while but also connector 10 and piston bar component 24 are fixed together.Then, it connects
First 10 and blood taking needle 3 (referring to Figure 17) thereon can be together drawn into internal recovering pipe 21 with piston bar component 24.
The fastened component 246 of piston bar component 24 constitutes syringe needle recycling of the present invention with the fastened component 105 of connector 10 and fills
The first pair of fastened component set.
The guide surface 106,244 of above-mentioned fastened component is wedge shape, and its purpose is to mutually crossing convenient for fastened component.
For this purpose, " wedge shape " should be broadly understood to include chamfering or the situation of rounding.It will be understood by those skilled in the art that its
In a guide surface be wedge shape it is also possible.In addition, one of them hook-shaped fastened component can be hole or slot or step etc.
Edge formed.
In order to further facilitate mutually crossing for fastened component, preferably (or the engaging so that at least one fastened component
Component where component) it easily deforms.As shown in Figures 12 and 13, multiple cannelures 247 can be formed in annular wall 243,
So that the section annular wall 243 between adjacent cannelure 247 is formed as cantilever design and easily deformable.
The separation of piston bar component and internal recovering pipe
Referring to Fig. 3 and Fig. 4, syringe needle retracting device of the invention (or needle holder component 1) further includes separating member 14 (first
Separating member).The separating member 14 of diagram be the rear end for the plinth 12 for being formed in needle holder cylinder 11 backward (lower end in figure)
Component outstanding, the parting surface 142 of the wedge shape with tip 141 and in 141 inside of tip.
With the separating member 14 of needle holder cylinder 11 correspondingly, referring to Figure 12 and Figure 13, as piston bar component 24
The peripheral surface front end (upper end in figure) of the annular wall 243 of one end 241 is formed with the parting surface 249 of wedge shape.Parting surface 249 or ring
The peripheral surface front end of shape wall 243 constitutes the separating member (the second separating member) of the first end 241 of piston bar component 24.
Referring to Fig. 1, when recycling blood taking needle, as recycling tube assembly 2 is close to connector 11 (or plinth 12), needle holder cylinder
The tip 141 of 11 separating member 14 is injected between 243 peripheral surface of annular wall and internal recovering pipe 21 so that separating member 14
Parting surface 142 is engaged with the parting surface 249 of annular wall 243, and then by the extruding between lozenges, annular wall 243 becomes
Shape and outer diameter are reduced, to make the shoulder 248 of its periphery surface rear end be detached with the step 214 in internal recovering pipe 21.At this moment, piston
Bar component 24 is entered under the pulling force effect of compressed spring 22 in internal recovering pipe 21.
In above process, in order to avoid may interfere with to be conducive to point between internal recovering pipe 21 and needle holder cylinder 11
From component 14 work, can the side and internal recovering pipe 21 opposite with parting surface 142 of separating member 14 inner surface it
Between formed a generally ring gap 143 (Fig. 4).
It will be understood by those skilled in the art that the parting surface 142 of the separating member 14 of needle holder cylinder 11 and piston bar component
The parting surface 249 of 24 annular wall 243 need not all be wedge-shaped, but can only be wedge shape there are one parting surface.
As shown in Figures 12 and 13, the multiple cannelures 247 formed in annular wall 243 so that between adjacent cannelure 247
Section annular wall 243 is formed as cantilever design and easily deformable.It is this to deform the annular wall for being equally beneficial for piston bar component 24
243 with the separation of the first open end 211 of internal recovering pipe 21.
Although in the shown embodiment, separating member 14 is formed on needle holder cylinder 11, those skilled in the art
It is appreciated that separating member can also be formed in (not shown) on connector 10.
It is formed in the first end 241 of piston rod component 24 when the fixing component of the present invention is not shoulder/stepped form
When interference fit and/or male-female structure between peripheral surface and one section of inner peripheral surface of internal recovering pipe 20, needle holder cylinder 11 or
The first separating member 14 formed on connector 10 is not necessarily to wedge structure, as long as its length outstanding is suitable in internal recovery tube 21
Can be pushed when close to connector 10 or plinth 12 first end 241 of piston bar component 24 by internal recovering pipe 21 that
Section forms the inner peripheral surface of interference fit and/or male-female structure.I.e., it is possible to the second separating member not independently formed, or
Person says that the first end 241 of piston bar component 24 is also used as the second separating member simultaneously.
The fixation of internal recovering pipe and needle holder cylinder
At the end of recycling, blood taking needle is accommodated in internal recovering pipe 21 with connector 10 (referring to Figure 17).At this moment, in order to
Preferably, it more easily prevents from surprisingly stabbing caused by blood taking needle, preferably enables needle holder cylinder 11 and recycling tube assembly 2 solid
It is scheduled on together.
Referring to Fig. 3, in the illustrated embodiment, engaging structure is formed on the inner surface of the front end side of needle holder cylinder 11
Part 15.Fastened component 15 can be from the inner surface of needle holder cylinder 11 protrude inwardly from flange, flange can be one it is whole circle or
Several sections circumferentially distributed of form comprising the 151 knead dough forward end of guide surface of the wedge shape towards rear end (lower end in figure)
The snap-latch surface 152 of (upper end in figure).Snap-latch surface 152 relative to cylinder 100 inner surface (or outer surface) generally vertically or Cheng Rui
Angle so that fastened component 15 is formed as hook-shaped.
With the fastened component 15 of needle holder cylinder 11 correspondingly, as shown in figure 9, in the first open end of internal recovery tube 21
211 side of portion is formed with fastened component 215.Fastened component 215 can be protruded outward on the outer surface of internal recovery tube 21
Flange, flange can by one it is whole circle or circumferentially distributed several sections in the form of comprising towards rear end (right end in figure)
216 knead dough forward end of snap-latch surface (left end in figure) wedge shape guide surface 217.Snap-latch surface 216 is relative to internal recovering pipe 21
Peripheral surface generally vertically or formed acute angle so that fastened component 215 is formed as hook-shaped.
The fastened component 15 of needle holder cylinder 11 and the fastened component 215 of internal recovering pipe 21 constitute the second couple of the present invention
Fastened component.
Referring to Fig. 1, when recycling blood taking needle, as recycling tube assembly 2 is close to the plinth 12 of needle holder cylinder 11, needle holder
The fastened component 15 of cylinder 11 and the fastened component 215 of internal recovering pipe 21 engage, and the wedge-shaped guide surfaces 151 of the two and 217 are mutually
It contacts and two fastened components is guided mutually to cross, later, the snap-latch surface 152 of two fastened components and 216 blocks opposite to each other
It is combined, to realize the fixation of needle holder cylinder 11 and internal recovering pipe 21.
It is mutually crossed to further facilitate second pair of fastened component, can make at least one fastened component or its place
Component be more prone to deform.Referring to Fig. 2 and 3, it is preferable that the formation of needle holder cylinder 11 has the part of fastened component 15, is formed
There is the slot 16 of general " U " shape so that it is simultaneously therefore easily deformable that fastened component 15 is formed as cantilever design.As replacement embodiment party
Formula, or combine with said program, in fig.9 shown in be formed at the first open end 211 of internal recovering pipe 21
Fastened component 215 in, can be generally along being longitudinally formed slot (not shown) so that fastened component 215 is formed as cantilever design
And it is therefore easily deformable.
As above-mentioned first pair of fastened component 105,246, second pair of fastened component 15,205 is without all having wedge shape
Guide surface.
In embodiment shown in Fig. 3, engaging can be formed simultaneously on needle holder cylinder 11 by forming U-lag 16
Component 15 and separating member 14, i.e. fastened component 15 and separating member 14 are formed by the marginal portion on slot both sides respectively.
The position relationship of two pairs of fastened components and separating member
In order to ensure that blood taking needle can be reliably drawn into piston bar component 24 in internal recovering pipe 21, at the same it is excellent
Selection of land makes internal recovering pipe 21 and needle holder cylinder 11 be fixed together, as shown in Figure 1, when connector 10 installs in place, connector
10 fastened component 105 and the fastened component 15 of needle holder cylinder 11 are more than the separation of needle holder cylinder 11 (towards the right side in figure) all backwards
Component 14.In more general terms, the relative position of first pair of fastened component, second pair of fastened component and the first separating member is set as
After first pair of fastened component and second pair of fastened component engage (i.e. snap-latch surface is facing with each other), the first separating member just drives work
Stopper rod component is detached.
The operating process of syringe needle retracting device recycling blood taking needle using the present invention is described referring to Figure 14~Figure 17.
Blood taking needle 3 is installed to according to mode in the prior art on needle holder component 1 first.Then, needle holder is held
Component 1 is completed passages through which vital energy circulates and is punctured.Then, according to mode of operation known in the art, vacuum blood collection tube is inserted into needle holder component 1
It is interior, and it is automatically performed blood specimen collection under vacuum.It, can be according to known in the art if necessary to acquire multiple blood samples
It is removed like that using pipe, changes new vacuum blood collection tube and continue to sample.Repeatedly, until collecting all blood samples of needs.
Then, recycling tube assembly 2 is injected in needle holder component 1.When recycling tube assembly 2 is close to before needle holder component 1
When end, certain resistance is generated since first pair of fastened component therein starts engagement, at this moment continues to push ahead recovery tube group
Part 2.Under the synergy of separating member and first pair of fastened component, the compressed spring recycled in tube assembly 2 is released, and is generated
Blood taking needle is drawn in into the pulling force in the recycling tube assembly 2 of needle holder component 1/.It is then possible to dispose containing used blood taking needle
Syringe needle retracting device, without causing unexpected stab.
Above with reference to the concrete structure shown in the drawings that detailed description of the preferred embodimentsthe present invention has been described, still, art technology
It should be understood that specific descriptions above are Examples Propertiess, those skilled in the art as described above, can make personnel
All variations and modifications, without departing from the scope of the present invention.
Claims (15)
1. a kind of syringe needle retracting device, including：
Needle holder component (1) comprising：
Connector (10) for fixed needle；
Hollow needle holder cylinder (11)；With
Plinth (12) for separably fixing the connector (10), the plinth (12) are formed in the needle holder cylinder
(11) one end；And recycling tube assembly (2) in the needle holder cylinder (11) can be put into comprising：
External recovery tube (20), with open end (201) and closing end (202)；
Internal recovering pipe (21) has the first open end (211) and the second open end (212), internal recovering pipe (21)
It is at least partially accommodated into external recovery tube (20) and is fixedly connected with external recovery tube (20)；
Compressed spring (22), between external recovery tube (20) and internal recovering pipe (21), one end of compressed spring (22)
It is fixedly attached to internal recovering pipe (20)；
Sliding part (23) is at least partially accommodated into internal recovering pipe (20) and is capable of the another of backstop compressed spring (22)
End；With
Piston bar component (24) has the of the first open end (211) for being detachably fastened to internal recovering pipe (21)
The second end (242) engaged in one end (241) and internally positioned recovery tube (21) and with sliding part (23)；
Wherein, first pair of fastened component (105,246) is respectively formed on connector (10) and the first end of piston bar component (24)
In portion (241), when recycle tube assembly (2) in needle holder cylinder (11) close to connector (10) when, first pair of fastened component (105,
246) can engage so that connector (10) and piston bar component to be fixed together；
First separating member (14) is formed on plinth (12) side and connector (10) alternative one of needle holder cylinder (11), when
Tube assembly (2) is recycled in needle holder cylinder (11) when close connector (10), the first separating member (14) being capable of engaging piston bar structure
The first end (241) of part (24) simultaneously drives the of the first ends (241) of piston bar component (24) and internal recovering pipe (21)
One open end (211) detaches,
The relative position of first pair of fastened component (105,246) and the first separating member (14) is set as when first pair of fastened component
(105,246) after engaging, the first separating member (14) engaging piston bar component (24).
2. syringe needle retracting device as described in claim 1, wherein set on the inside of the closing end (202) of external recovery tube (20)
It is useful for the clamping device of the second open end (212) of clamping internal recovering pipe (21), the first end of internal recovering pipe (21)
Portion (211) is nearby equipped with the stepped flange (206) outwardly outstanding from internal recovering pipe, external recovery tube (20)
One end of open end (201) and compressed spring (22) is respectively fixedly connected with to stepped flange (206).
3. syringe needle retracting device as described in claim 1, wherein internal recovering pipe (21) is equipped with longitudinal chute (213), sliding
Moving part (23) can be slided along longitudinal chute (213).
4. syringe needle retracting device as claimed in claim 3, wherein sliding part (23) includes main body (231), autonomous agent (231)
Outwardly projection protrusion (232) and autonomous agent (231) the inside projection of inner surface card (233), protrusion
(232) longitudinal chute (213) backstop compressed spring (22) on internal recovering pipe (21) can be passed through, card (233) can be with
The second end (242) of piston bar component (24) engages.
5. syringe needle retracting device as described in claim 1, wherein the first end (241) of piston bar component (24) is annular
Wall (243).
6. syringe needle retracting device as claimed in claim 5, wherein the annular wall (243) of piston bar component (24) is formed with more
A slot (247) so that annular wall (243) part between adjacent slot forms cantilever design.
7. syringe needle retracting device as claimed in claim 5, wherein first pair of fastened component (105,246) includes being formed in connect
Hook-shaped fastened component (105) on head (10) and the hook-shaped fastened component (246) that is formed in piston bar component (24),
Fastened component (246) in piston bar component (24) includes the guiding of the front end for the inner peripheral surface for being formed in annular wall (243)
The snap-latch surface (225) of the rear end of the inner peripheral surface of face (224) and formation annular wall (223),
Fastened component (105) on connector (10) is formed on the part beyond plinth (12) of connector (10), including direction
The snap-latch surface (107) of front end and guide surface (106) towards rear end.
8. syringe needle retracting device as claimed in claim 7, wherein the fastened component (105) and piston bar component of connector (10)
(24) at least one guide surface is wedge-shaped in fastened component (246).
9. syringe needle retracting device as claimed in claim 5, wherein
Piston bar component (24) includes the second separating member, and the second separating member includes the peripheral surface for being formed in annular wall (243)
Front end parting surface (249),
First separating member (14) includes the parting surface (142) that can be engaged with the parting surface (249) of the second separating member,
At least one in the parting surface (142) of first separating member (14) and the parting surface (229) of the second separating member is wedge shape
's.
10. syringe needle retracting device as claimed in claim 5, wherein
It is formed with step (214) on the inner surface of the first open end (211) side of internal recovery tube (21),
Being formed in the rear end of the peripheral surface of the annular wall (243) of piston bar component (24) can lean against on the step (214)
Shoulder (248).
11. syringe needle retracting device as described in claim 1, wherein further include second pair of fastened component (15,215), second pair
Fastened component (15,215) is respectively formed at needle holder cylinder (11) and is inscribed on headstock (12) side and on internal recovering pipe (21), when
Tube assembly (2) is recycled in needle holder cylinder (11) when close plinth (12), second pair of fastened component (15,215) can engage
And needle holder cylinder (11) and internal recovering pipe (21) are fixed together, wherein second pair of fastened component (15,215) and first
The relative position of separating member (14) is set as after second pair of fastened component (15,215) engaging, and the first separating member (14) connects
Close piston bar component (24).
12. syringe needle retracting device as claimed in claim 11, which is characterized in that second pair of fastened component (15,215) includes shape
At in needle holder cylinder (11) hook-shaped fastened component (15) and the hook-shaped engaging structure that is formed on internal recovering pipe (21)
Part (215),
Fastened component (15) in needle holder cylinder (11) be formed by the flange on the inner surface of needle holder cylinder (11), including
Snap-latch surface (152) towards front end and the guide surface (151) towards rear end,
Fastened component (215) on internal recovering pipe (21) is by the first open end (211) one in internal recovery tube (21)
What the flange on the peripheral surface of side was formed, include the guide surface (217) towards front end and the snap-latch surface (216) towards rear end.
13. syringe needle retracting device as claimed in claim 12, wherein the fastened component (15) in needle holder cylinder (11) and inside
At least one guide surface is wedge-shaped in fastened component (215) on recovery tube (21).
14. a kind of needle holder component, for recycling syringe needle, the needle holder component includes：
Connector (10) for fixed needle；
Hollow needle holder cylinder (11)；
For the plinth (12) of separably anchor tip (10), plinth (12) is formed in one end of needle holder cylinder (11)；
Fastened component (105) is formed on the part beyond plinth (12) of connector (10)；And
First separating member (14) is formed in plinth (12) side and connector (10) alternative one of needle holder cylinder (11)
On.
15. a kind of recycling tube assembly, for recycling syringe needle, the recycling tube assembly includes：
External recovery tube (20), with open end (201) and closing end (202)；
Internal recovering pipe (21) has the first open end (211) and the second open end (212), internal recovering pipe (21)
It is at least partially accommodated into external recovery tube (20) and is fixedly connected with external recovery tube (20)；
Compressed spring (22), between external recovery tube (20) and internal recovering pipe (21), one end of compressed spring (22)
It is fixedly attached to internal recovering pipe (20)；
Sliding part (23) is at least partially accommodated into internal recovering pipe (20) and is capable of the another of backstop compressed spring (22)
End；
Piston bar component (24) has the of the first open end (211) for being detachably fastened to internal recovering pipe (21)
The second end (242) engaged in one end (241) and internally positioned recovery tube (21) and with sliding part (23)；And
Fastened component (246) is formed on the first end (241) of piston bar component (24).
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 CN105880256A (en) | 2016-08-24 |
| CN105880256B true CN105880256B (en) | 2018-10-02 |
Family
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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) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106725523B (en) * | 2017-02-27 | 2019-06-25 | 柳州市人民医院 | Blood drawing protection cap |
| AU2018273539B2 (en) | 2017-05-22 | 2024-03-21 | Johnson & Johnson Consumer Inc. | Lozenge dosage form |
| 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 |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5328473A (en) * | 1993-04-28 | 1994-07-12 | Becton, Dickinson And Company | Disposable needle holder |
| US5769826A (en) * | 1997-03-14 | 1998-06-23 | Johnson; Kenneth H. | Spring loaded retractable cannula blood drawing device |
| 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 |
| US9066770B2 (en) * | 2010-10-18 | 2015-06-30 | Warsaw Orthopedics, 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 |
| 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 |
| 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 |
| CN204544948U (en) * | 2014-12-17 | 2015-08-12 | 千禧光医疗有限公司 | Syringe needle retracting device and needle holder assembly and recovery tube assembly |
-
2014
- 2014-12-17 CN CN201410783533.1A patent/CN105880256B/en active Active
-
2015
- 2015-12-16 WO PCT/CN2015/097583 patent/WO2016095818A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| CN105880256A (en) | 2016-08-24 |
| WO2016095818A1 (en) | 2016-06-23 |
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