CN106334249A - PICC (peripherally inserted central catheter), producing method thereof, and extruding machine for producing PICC - Google Patents
PICC (peripherally inserted central catheter), producing method thereof, and extruding machine for producing PICC Download PDFInfo
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- CN106334249A CN106334249A CN201510423286.9A CN201510423286A CN106334249A CN 106334249 A CN106334249 A CN 106334249A CN 201510423286 A CN201510423286 A CN 201510423286A CN 106334249 A CN106334249 A CN 106334249A
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- core
- mould
- head
- discharging opening
- tube body
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- 238000000034 method Methods 0.000 title claims abstract description 5
- 239000000463 material Substances 0.000 claims abstract description 16
- 238000007599 discharging Methods 0.000 claims description 115
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 9
- 238000002360 preparation method Methods 0.000 claims description 9
- 239000000741 silica gel Substances 0.000 claims description 9
- 229910002027 silica gel Inorganic materials 0.000 claims description 9
- 239000002994 raw material Substances 0.000 claims description 7
- 239000007787 solid Substances 0.000 claims description 5
- 238000001125 extrusion Methods 0.000 abstract description 10
- 238000005516 engineering process Methods 0.000 abstract description 6
- 239000000084 colloidal system Substances 0.000 abstract description 3
- 238000002627 tracheal intubation Methods 0.000 abstract 2
- 210000001503 joint Anatomy 0.000 abstract 1
- 210000003462 vein Anatomy 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000003032 molecular docking Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000001356 surgical procedure Methods 0.000 description 2
- 238000005253 cladding Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 210000002620 vena cava superior Anatomy 0.000 description 1
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- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention relates to a PICC (peripherally inserted central catheter), a producing method thereof, and an extruding machine for producing the PICC. Different from a scheme for forming the PICC through butt joint of two materials, the invention adopts a colloid extrusion molding technology, and the distance between a mouth mold and a core mold at the discharge opening position of the extruding machine in the radial direction is controlled, so that an intubation tube body with a relatively thick wall is formed by controlling the distance to be relatively large and an intubation tube head with a relatively thin wall is formed by controlling the distance to be relatively small; different softness is realized by adopting different thicknesses and the cost of the PICC is relatively low.
Description
Technical field
The present invention relates to technical field of medical instruments, more particularly, to a kind of picc conduit, preparation method and
Make the extruder of picc conduit.
Background technology
(peripherally inserted central catheter leads to superior vena caval picc through peripheral vein
Pipe) tube placing operation, due to directly nutrient solution or liquid being delivered to that CBF is big, flowing in chemicotherapy
The fast central vein of speed, thus the peripheral vein that liquid is little to CBF, flow velocity is slow can be avoided to stimulate,
Gradually clinic is used widely after surgery in recent years.
When using, picc conduit completes inserting of conduit together with puncture needle.Specifically, picc conduit
Including being suitable to insert inserting pipe and being suitable to the indwelling tube outside human body of human body, insert and there is in pipe metal
Seal wire, inserts pipe for this and enters after human body, its interior wire guide can be imaged under x ray machine, convenient
Judge to insert whether pipe enters superior vena cava by regulation.
During operation, operator first finds vein, generally basilic vein accurately, by the needle body of puncture needle from conduit
The insertion of indwelling pipe end insert in pipe, after piercing vein, conduit is fixed, thus by needle body from conduit
Extract out, and then picc conduit progresses into precalculated position under the support of wire guide.
For improving the comfort level when sending into human body for the picc conduit, catheter head is typically chosen and must compare conduit
Body is soft.For achieving the above object, in prior art, using bonding technology by conduits different for material
Head is docked in catheter body.Above-mentioned docking needs special equipment, which results in picc conduit cost
Higher, it is unfavorable for reducing surgery cost.
Content of the invention
The problem that the present invention solves is how to reduce the cost of picc conduit.
For solving the above problems, an aspect of of the present present invention provides a kind of picc conduit, and described conduit includes fitting
In the pipe of inserting inserting human body, described pipe of inserting includes connected inserting tube body and head, described head
Material identical with the material inserting tube body, and the wall thickness of described head is less than and inserts the wall thickness of tube body.
Alternatively, described head is identical with the external diameter inserting tube body, and the internal diameter of head is more than inserts pipe originally
The internal diameter of body.
Alternatively, described head and the material inserting tube body are silica gel.
Alternatively, the length range of described head is 30mm～80mm.
Alternatively, for the picc conduit of 3fr, described insert tube body wall thickness range be
0.15mm～0.4mm, the wall thickness range of described head is 0.05mm～0.3mm.
Alternatively, for the picc conduit of 4fr, described insert tube body wall thickness range be
0.15mm～0.4mm, the wall thickness range of described head is 0.06mm～0.3mm.
Another aspect of the present invention provides a kind of extruder for making picc conduit, comprising:
Coaxial mouth mould, the first core and the second core, described mouth mould is the cylinder of hollow, described first
Core is applied in the second core, described second core is applied in mouthful mould, described first core and second
Core is diametrically fitted, diametrically have spacing between described second core and mouth mould, in discharging opening,
Described first core is suitable to stretch out the second core.
Alternatively, described first core is separately positioned with the second core, and described second core is suitable to relatively the
One core precession and back-out.
Alternatively, described first core and the second core are fixedly installed, and the first core is had with the second core
One end of corresponding charging aperture and one end of corresponding discharging opening；One end of corresponding discharging opening, the first core
Stretch out the second core.
Alternatively, described first core and the second core are integrally formed.
Another aspect of the invention provides a kind of preparation method of picc conduit, comprising:
There is provided raw material to the feeding mouth of extruder, using mouth mould and the first core discharging, form picc conduit
Insert tube body；Using mouth mould and the second core discharging, form the head inserting pipe.
Alternatively, described first core is separately positioned with the second core；Using mouth mould and the first core discharging,
The tube body of inserting forming picc conduit passes through to adjust the first core in discharging opening extending port mould and the second core
Mould, the second core is retracted in mouthful mould in discharging opening and realizes；Using mouth mould and the second core discharging, formed
The head inserting pipe does not stretch out the second core by adjusting the first core in discharging opening, and the second core is in discharging
Mouth extending port mould is realized.
Alternatively, described first core and the second core are integrally formed, discharging opening one end, described first core
Mould stretches out the second core；Using mouth mould and the first core discharging, the tube body of inserting forming picc conduit leads to
Cross the first core to be retracted in mouthful mould and realize in discharging opening extending port mould, the second core；Using mouth mould and
Two core dischargings, form the head inserting pipe and are realized in discharging opening extending port mould by adjusting the second core.
Alternatively, first it is extruded into inserting tube body, formed afterwards and insert tube head；Or first be extruded into putting
Enter tube head, rear formation inserts tube body.
Alternatively, described raw material is silica gel, and for the picc conduit of 3fr, the internal diameter of described mouth mould is respectively
0.16mm～0.42mm, 0.07mm～0.32mm is differed between the first core, the external diameter of the second core.
Alternatively, described raw material is silica gel, and for the picc conduit of 4fr, the internal diameter of described mouth mould is respectively
0.16mm～0.42mm, 0.08mm～0.32mm is differed between the first core, the external diameter of the second core.
Compared with prior art, technical scheme has the advantage that different from two kinds of materials pair
Connect the scheme forming picc conduit, the present invention adopts colloid extrusion technology, existed by controlling extruder
The mouth mould of discharge outlet and core spacing diametrically, what large pitch formation wall thickness was thicker inserts pipe originally
Body, what smaller spacing formation wall thickness was relatively thin inserts tube head；Adopt thickness thin and thick different to realize softness
Degree is different, and cost is relatively low.
In alternative, for the silica gel material picc conduit of 3fr, the wall thickness range inserting tube body is
0.15mm～0.4mm, the wall thickness range of head is 0.05mm～0.3mm；For the conduit of 4fr, insert
The wall thickness range of tube body is 0.15mm～0.4mm, and the wall thickness range of head is 0.06mm～0.3mm, with
Realization inserts tube head compared with body softness, sends into human comfort needs after being suitable to actual puncture.
Extruder discharge outlet mouth mould from core spacing diametrically different by coaxial mouth mould,
First core and the second core are realized, and wherein, the first core is applied in the second core, the second core passes through
Be through in mouthful mould, the first core is diametrically fitted with the second core, between the second core and mouth mould in footpath
There is spacing upwards；Second core is due to being coated on outside the first core, thus the first core external diameter and mouth mould
The difference of internal diameter is more than the difference of the second core external diameter and mouth mould internal diameter.So, thicker the inserting of wall thickness need to be made
During tube body, adopt the first core and mouth mould discharging in discharging opening；Need to make wall thickness relatively thin insert tube head
During portion, adopt the second core and mouth mould discharging in discharging opening.
In a kind of alternative, the first core is separately positioned with the second core.Mouthful mould, the first core and the
Two cores are respectively provided with one end of corresponding charging aperture and one end of corresponding discharging opening, and three corresponds to charging aperture
One end can be connected with stepper motor.In this kind of extruder, adopt the first core and mouth mould in discharging opening
Discharging can be realized by one of following three kinds of modes of operation: a) mouth mould is fixed, the first core and the second core
Mould is suitable for precession respectively or rotation is moved back, initial position, the discharging corresponding with the second core of mouth mould, the first core
This end three of mouth flushes；Precession afterwards first core, in discharging opening extending port mould and the second core, revolves
Move back the second core, contract in mouth mould in discharging opening；Or b) the first core is fixed, mouth mould be suitable to forward or to
After move, the second core be suitable to precession or rotation move back；Initial position, as described in a), then first retreats mouth mould,
In discharging opening first core and the second core extending port mould, then revolve and move back the second core, in discharging opening second core
Mold shrinkage is in mouth mould；Or c) the second core is fixed, mouth mould is suitable to be moved forward or rearward, and the first core is fitted
Move back in precession or rotation；Initial position, as described in a), then first moves forward mouth mould, in discharging opening mouth mould
Stretch out the first core and the second core, then precession first core, in discharging opening the first core extending port mould.
Can be real by one of following three kinds of modes of operation with mouth mould discharging using the second core in discharging opening
Existing: a) mouth mould is fixed, the first core and the second core are suitable for precession respectively or rotation is moved back, initial position,
Mouth mould, this end three of the first core discharging opening corresponding with the second core flush；Precession afterwards second core,
In discharging opening extending port mould and the first core；Or b) the first core is fixed, mouth mould is suitable to move forward or backward
Dynamic, the second core is suitable to precession or rotation is moved back；Initial position, as described in a), first retreats mouth mould, in discharging
Mouth the first core and the second core extending port mould；Afterwards can not precession second core it is also possible to precession
Two cores, at least so that the first core does not stretch out the second core in discharging opening；Or c) the second core is fixed,
Mouth mould is suitable to be moved forward or rearward, and the first core is suitable to precession or rotation is moved back；Initial position as described in a),
First it is moved back by mould of opening one's mouth, in discharging opening first core and the second core extending port mould；Can not revolve afterwards and move back
First core is it is also possible to rotation moves back the first core, at least so that the first core does not stretch out the second core in discharging opening
Mould.
In alternative dispensing means, the first core is fixedly installed with the second core, and both are for example integrally formed,
In discharging opening one end, the first core stretches out the second core.In this kind of extruder, adopt first in discharging opening
Core and mouth mould discharging can be realized by one of following two modes of operation: a) mouth mould is fixed, the first core
Mould and the second core are suitable to one precession or rotation is moved back, initial position, mouth mould, the first core and the second core
This end of the corresponding discharging opening of integrative-structure flushes；Precession integrative-structure is so that in discharging opening first core afterwards
Mould extending port mould, the second core contracts in mouth mould；Or the integrative-structure of b) the first core and the second core is solid
Fixed, mouth mould is suitable to be moved forward or rearward；Initial position as described in a), then retreat mouth mould so that
In discharging opening the first core extending port mould, the second core contracts in mouth mould.
Can be real by one of following two modes of operation with mouth mould discharging using the second core in discharging opening
Existing: a) mouth mould is fixed, the first core and the second core are suitable to one precession or rotation is moved back, initial position, mouth
This end of mould, the first core discharging opening corresponding with the second core integrative-structure flushes；The one of precession afterwards is tied
Structure is so that in discharging opening the second core extending port mould；Or the integrative-structure of b) the first core and the second core
Fixing, mouth mould is suitable to be moved forward or rearward, and initial position, as described in a), then retreats mouth mould, makes
Obtain in discharging opening the second core extending port mould.
Brief description
Fig. 1 is the structural representation in original state for the extruder of one embodiment of the invention；
Fig. 2 to Fig. 4 is to make picc conduit using the extruder in Fig. 1 to insert during tube head three respectively
Plant structural representation；
Fig. 5 is to make picc conduit using the extruder in Fig. 1 to insert a kind of structural representation during tube body
Figure；
Fig. 6 is the structural representation of the picc conduit that Fig. 2 to Fig. 5 makes；
Fig. 7 is the structural representation in original state for the extruder of another embodiment of the present invention；
Fig. 8 is to make, using the extruder in Fig. 7, a kind of structural representation inserted during tube head；
Fig. 9 is to make, using the extruder in Fig. 7, a kind of structural representation inserted during tube body.
Specific embodiment
As described in the background art, prior art using docking technique realize material different insert tube head
Connection and body between, this causes picc conduit relatively costly.For solving the above problems, the present invention carries
Go out using colloid extrusion technology, the connection inserted tube head and body between different to realize thickness,
Extrusion technology cost is relatively low.
Understandable for enabling the above objects, features and advantages of the present invention to become apparent from, below in conjunction with the accompanying drawings
The specific embodiment of the present invention is described in detail.
Hereinafter first introduce the extruder of preparation method and use.
In one embodiment, making of this picc conduit is realized using extruder as shown in Figures 1 to 5.
Referring to figs. 1 to shown in Fig. 5, this extruder includes coaxial mouth mould 11, the first core 12 and the second core
13, wherein, mouth mould 11 is the cylinder of hollow, and the first core 12 is applied in the second core 13, second
Core 13 is applied in mouthful mould 11.Additionally, diametrically, the first core 12 is pasted with the second core 13
Between conjunction, the second core 13 and mouth mould 11, there is spacing.
Referring to figs. 1 to shown in Fig. 5, the first core 12 is separately positioned with the second core 13, between the two
For example with threaded, the second core 13 can be moved back with rotation in the first core 12 precession relatively.Other enforcements
In example, contact surface between the two can also be smooth surface.As can be seen that the second core 13 is hollow
Cylinder-like structure, the first core 12 can be hollow or solid cylindrical-shaped structure.
Mouth mould 11, the first core 12 are respectively provided with relative two ends with the second core 13, and wherein one end is right
Answer one end of charging aperture, the other end is one end of corresponding discharging opening, one end of the corresponding charging aperture of three is permissible
It is connected with stepper motor.
It is understood that the first core 12 is nested in the second core 13, thus, the first core 12
Difference 2*d2 of external diameter and mouth mould 11 internal diameter is more than difference 2*d1 of the second core 13 external diameter and mouth mould 11 internal diameter,
I.e. d2 > d1.Thus, the mouth mould 11 of regulation extruder, the first core 12, the second core 13 are in discharging
The relative position of mouth, as shown in Figures 2 to 4, using the second core 13 and mouth mould 11 discharge hole for discharge,
Can make wall thickness d2 in Fig. 6 relatively thin insert tube head 22；As shown in figure 5, adopting the first core
12 with mouth mould 11 in discharge hole for discharge, can make wall thickness d1 in Fig. 6 thicker insert tube body 21.
Insert tube body 21 and insert tube head 22 and constitute most picc conduit.
Introduce in detail below and how to adjust extruder, realize discharging opening the second core 13 and mouth mould 11 respectively
Discharging and the first core 12 and mouth mould 11 discharging.
In a kind of mode of operation of extruder, the mouth mould 11 of extruder is fixing, the first core 12 and second
Core 13 is suitable for precession respectively and rotation is moved back, and can be driven by stepper motor, and the amount of moving forward and backward can be by
Programming Control.
As shown in figure 1, the initial position of extruder, mouth mould 11, the first core 12 and the second core 13
Opposite end in, one end of corresponding discharging opening flushes.
Afterwards a) as shown in Fig. 2 the first core 12 is motionless, precession the second core 13, stretch in discharging opening
Outlet mold 11 and the first core 12, to realize the second core 13 and mouth mould 11 discharging.Or b) can also
Solid arrow as shown in Figure 3, the first core 12 with the synchronous precession of the second core 13, in discharging opening the
One core 12 and the second core 13 all extending port moulds 11, but the first core 12 is corresponding with the second core 13
This end of discharging opening flushes.Or c) can also solid arrow as shown in Figure 4, the first core 12 is with the
The asynchronous precession of two core 13, in discharging opening the first core 12 and the second core 13 all extending port moulds 11,
But the second core 13 stretches out the first core 12.
In this stage, half d1 of the difference between the second core 13 external diameter and mouth mould 11 internal diameter determines discharging opening
The wall thickness of the film of extrusion, can make the head 22 of the picc conduit shown in Fig. 6.
Then introduce the making inserting tube body 21 of picc conduit.
For the extruder discharging structure shown in Fig. 2, when need to make body 21, as shown in figure 5, mouth mould
11 is motionless, precession the first core 12, in discharging opening the first core 12 extending port mould 11；The second core is moved back in rotation
Mould 13, stretches out the second core 13 in discharging opening mouth mould 11, is gone out with mouth mould 11 with realizing the first core 12
Material.In this stage, half d2 of the difference between the first core 12 external diameter and mouth mould 11 internal diameter determines discharging opening
The wall thickness of the film of extrusion, can make the body 21 of the picc conduit shown in Fig. 6.
For the extruder discharging structure shown in Fig. 3, as shown in figure 5, because the first core 12 is in
In the state of discharging opening extending port mould 11, thus only need to revolve and move back the second core 13, make discharging opening mouth mould 11
Stretch out the second core 13, you can to realize the first core 12 and mouth mould 11 discharging.
For the extruder discharging structure shown in Fig. 4, it is referred to the tune of the above-mentioned extruder for Fig. 2
Section mode, to adjust the structure to Fig. 5.
In the mode of operation of second extruder, first core 12 of extruder is fixing, and mouth mould 11 is suitable to
It is moved forward or rearward, the second core 13 is suitable to precession or rotation is moved back.Mouth mould 11 and the second core 13 all may be used
To be driven by stepper motor, the amount of moving forward and backward can also be by programming Control.
Under original state, each component locations of extruder are still as shown in Figure 1.
Then, dotted arrow as shown in Figure 3, first retreats mouth mould 11, discharging opening the first core 12 with
Second core 13 flushes, and all extending port moulds 11；Afterwards can be as shown in figure 3, not precession second core
13 it is also possible to precession the second core 13 is so that the second core 13 stretches out the first core 12 in discharging opening.
What the extruder of above-mentioned position was used for making picc conduit in Fig. 6 inserts tube head 22.
Insert after tube head 22 length meets demand, the second core 13 is moved back in rotation, stretches in discharging opening mouth mould 11
Go out the second core 13, to realize the first core 12 and mouth mould 11 discharging, to make the picc in Fig. 6
Conduit insert tube body 21.
In the mode of operation of the third extruder, second core 13 of extruder is fixing, and mouth mould 11 is suitable to
It is moved forward or rearward, the first core 12 is suitable to precession or rotation is moved back.Mouth mould 11 and the first core 12 all may be used
To be driven by stepper motor, the amount of moving forward and backward can also be by programming Control.
Under original state, each component locations of extruder are still as shown in Figure 1.
Then, dotted arrow as shown in Figure 3, is first moved back by mould 11 of opening one's mouth, the first core 12 and second
This end of the corresponding discharging opening of core 13 flushes, and all extending port moulds 11；Can not revolve afterwards and move back the first core
12, as shown in Figure 3 it is also possible to the first core 12 is moved back in rotation, as shown in Figure 4 so that the second core 13 exists
Discharging opening stretches out the first core 12.The extruder of above-mentioned position is used for making the picc conduit in Fig. 6
Insert tube head 22.
Insert after tube head 22 length meets demand, move forward mouth mould 11 so as to stretch out the in discharging opening
Two cores 13, precession the first core 12, in discharging opening extending port mould 11, state as shown in Figure 5, with reality
Existing first core 12 and mouth mould 11 discharging, insert tube body 21 with make picc conduit in Fig. 6.
No matter it is understood which kind of original state extruder is in, adjusting mouth mould 11, the first core
12nd, one or more of second core 13, discharging opening adopt the second core 13 and mouth mould 11 discharging,
And first core 12 and mouth mould 11 discharging, can make picc conduit respectively inserts tube head 22
With body 21.
In above-mentioned extruder, throat-fed can be for example silica gel.Internal diameter due to mouth mould 11 determines,
Thus, no matter the picc conduit head 22 of extrusion, or body 21, its external diameter is all identical.
In one embodiment, after the second core 13 and mouth mould 11 discharging 30mm～80mm, adopt first
Core 12 and mouth mould 11 discharging, that is, it is identical with body 21 material to insert tube head 22, and inserts tube head
The scope of portion 22 length l is 30mm～80mm.
In specific implementation process, in an embodiment, the internal diameter of control mouth mould 11 and the first core 12
External diameter between differ 0.16mm～0.42mm, between the external diameter of the internal diameter of mouth mould 11 and the second core 13
Difference 0.07mm～0.32mm, can form picc catheter outer diameter scope is 1.14 ± 0.1mm, that is, put
Enter tube body 21 and insert tube head 22 external diameter and be 1.14 ± 0.1mm, insert tube body 21 internal diameter model
Enclose for 0.6 ± 0.1mm (wall thickness range inserting tube body 21 is 0.15mm～0.4mm), insert pipe
Head 22 inside diameter ranges are that (wall thickness range inserting tube head 22 is 0.7mm～0.9mm
0.05mm～0.3mm) specification be 3fr picc conduit.
In another embodiment, differ between the internal diameter of control mouth mould 11 and the external diameter of the first core 12
0.16mm～0.42mm, differs between the internal diameter of mouth mould 11 and the external diameter of the second core 13
0.08mm～0.32mm, can form picc catheter outer diameter scope is 1.4 ± 0.1mm, that is, insert pipe originally
Body 21 is 1.4 ± 0.1mm, inserts tube body 21 inside diameter ranges for 0.85 with inserting tube head 22 external diameter
± 0.1mm (insert tube body 21 wall thickness range be 0.15mm～0.4mm), insert tube head 22
Inside diameter ranges are 0.9mm～1.2mm (wall thickness range inserting tube head 22 is 0.06mm～0.3mm)
Specification be 4fr picc conduit.
In manufacturing process, discharging can also push, from feeding mouth, the seal wire that material is, for example, metal simultaneously,
Make the raw materials such as the silica gel that discharging opening gone out cladding seal wire.
It is understood that above-mentioned insert tube head 22 production phase and inserted tube body 21 production phases
Both have no sequencing.
Fig. 7 is the structural representation in original state for the extruder of another embodiment of the present invention；Fig. 8 is to make
Make picc conduit with the extruder in Fig. 7 and insert a kind of structural representation during tube head；Fig. 9 is to make
Make picc conduit with the extruder in Fig. 7 and insert a kind of structural representation during tube body.The present embodiment
In extruder substantially with Fig. 1 to Fig. 5 in extruder structure and equivalently-sized, difference is, first
Core 12 is fixedly installed with the second core 13, and both for example can be formed using being integrally formed.This kind of feelings
Under condition, this end of the first core 12 and the corresponding discharging opening of the second core 13: the first core 12 stretches out second
Core 13.
In the present embodiment, the body 21 inserting pipe, still by the first core 12 and mouth mould 11 discharging, inserts pipe
Head 22 also still by the second core 13 and mouth mould 11 discharging.
Introduce in detail below and how to adjust extruder, realize discharging opening the second core 13 and mouth mould 11 respectively
Discharging and the first core 12 and mouth mould 11 discharging.
In a kind of mode of operation of extruder, the mouth mould 11 of extruder is fixing, the first core 12 and second
Core 13 is suitable to one precession and rotation is moved back, and can be driven by stepper motor, and the amount of moving forward and backward can be by compiling
Process control.
Under original state, each component locations of extruder are as shown in fig. 7, mouth mould 11, the first core 12 and
The integrative-structure of two cores 13 flushes in discharging opening.
First, as shown in figure 8, one precession the first core 12 and the second core 13 are so that both are going out
Material mouth equal extending port mould 11, using the second core 13 and mouth mould 11 discharging, to enable to insert tube head
22 making.
Insert after tube head 22 length meets demand, as shown in figure 9, one rotation move back the first core 12 with
Second core 13 so that the first core 12 in discharging opening extending port mould 11 and the second core 13 is in discharging
Mouth contracts in mouth mould 11, using the first core 12 and mouth mould 11 discharging, to enable to insert tube body 21
Making.
The position of above-mentioned Fig. 8 and Fig. 9 can also be by fixing the one of the first core 12 and the second core 13
Body structure, moves forward or is moved back by mould 11 of opening one's mouth, as shown in the dotted line in Fig. 8 and Fig. 9, real respectively
Reveal material mouth the second core 13 and mouth mould 11 discharging and the first core 12 and mouth mould 11 discharging.
It is understood that in above-described embodiment, using the radial distance between two cores and a bite mould not
With it is achieved that extrusion outer tube diameter is identical, but two sections of different bodys of internal diameter, it is achieved thereby that two kinds of walls
The making of thick body.It is also possible to pass through two mouthfuls of moulds and a core in other embodiments, extruding pipe is external
Footpath is different, but two sections of bodys of internal diameter identical are it is also possible to realize the extrusion of two kinds of wall thickness bodys.With respect to
Latter solution, the former picc conduit entire outer diameter is identical, thus human comfort is high, and the latter is due to head
The external diameter in portion is little, the external diameter of body big, for improving human comfort, need to control extrusion in both intersections
Speed is all slower than the extruded velocity of head, body, continuously excessive to realize.
Although present disclosure is as above, the present invention is not limited to this.Any those skilled in the art,
Without departing from the spirit and scope of the present invention, all can make various changes or modifications, therefore the guarantor of the present invention
Shield scope should be defined by claim limited range.
Claims (16)
1. a kind of picc conduit, what described conduit included being suitable to inserting human body inserts pipe, and described pipe of inserting includes
Connected insert tube body with head it is characterised in that the material of described head with insert tube body
Material is identical, and the wall thickness of described head is less than the wall thickness inserting tube body.
2. picc conduit according to claim 1 it is characterised in that described head with insert tube body
External diameter identical, the internal diameter of head is more than the internal diameter inserting tube body.
3. picc conduit according to claim 1 it is characterised in that described head with insert tube body
Material be silica gel.
4. picc conduit according to claim 1 is it is characterised in that the length range of described head is
30mm～80mm.
5. picc conduit according to claim 3 is it is characterised in that picc conduit for 3fr,
The described wall thickness range inserting tube body is 0.15mm～0.4mm, and the wall thickness range of described head is
0.05mm～0.3mm.
6. picc conduit according to claim 3 is it is characterised in that picc conduit for 4fr,
The described wall thickness range inserting tube body is 0.15mm～0.4mm, and the wall thickness range of described head is
0.06mm～0.3mm.
7. a kind of extruder making picc conduit is it is characterised in that include:
Coaxial mouth mould, the first core and the second core, described mouth mould is the cylinder of hollow, described first
Core is applied in the second core, described second core is applied in mouthful mould, described first core and second
Core is diametrically fitted, diametrically have spacing between described second core and mouth mould, in discharging opening,
Described first core is suitable to stretch out the second core.
8. extruder according to claim 7 is it is characterised in that described first core and the second core divide
From setting, described second core is suitable to the first core precession and back-out relatively.
9. extruder according to claim 7 is it is characterised in that described first core and the second core are solid
Fixed arrange, the first core and the second core have one end of corresponding charging aperture and corresponding discharging opening
One end；One end of corresponding discharging opening, the first core stretches out the second core.
10. extruder according to claim 9 is it is characterised in that described first core and the second core one
Body formed.
Extruder described in a kind of 11. employing claims 7 make picc conduit method it is characterised in that
Including:
There is provided raw material to the feeding mouth of extruder, using mouth mould and the first core discharging, form picc conduit
Insert tube body；Using mouth mould and the second core discharging, form the head inserting pipe.
12. preparation methods according to claim 11 are it is characterised in that described first core and the second core
Separately positioned；Using mouth mould and the first core discharging, the tube body of inserting forming picc conduit passes through
Adjust the first core in discharging opening extending port mould and the second core, the second core is retracted in mouth in discharging opening
Realize in mould；Using mouth mould and the second core discharging, form the head inserting pipe by adjusting the first core
Mould does not stretch out the second core in discharging opening, and the second core is realized in discharging opening extending port mould.
13. preparation methods according to claim 11 are it is characterised in that described first core and the second core
It is integrally formed, discharging opening one end, described first core stretches out the second core；Using mouth mould and the first core
Mould discharging, the tube body of inserting forming picc conduit passes through to adjust the first core in discharging opening extending port
Mould, the second core are retracted in mouthful mould and realize；Using mouth mould and the second core discharging, formed and insert pipe
Head pass through adjust the second core discharging opening extending port mould realize.
14. preparation methods according to claim 11 it is characterised in that be first extruded into insert tube body,
Formed afterwards and insert tube head；Or first be extruded into inserting tube head, formed afterwards and insert tube body.
15. preparation methods according to claim 11 it is characterised in that described raw material be silica gel, for
The picc conduit of 3fr, the internal diameter of described mouth mould is respectively and the first core, the external diameter of the second core between
Difference 0.16mm～0.42mm, 0.07mm～0.32mm.
16. preparation methods according to claim 11 it is characterised in that described raw material be silica gel, for
The picc conduit of 4fr, the internal diameter of described mouth mould is respectively and the first core, the external diameter of the second core between
Difference 0.16mm～0.42mm, 0.08mm～0.32mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510423286.9A CN106334249A (en) | 2015-07-17 | 2015-07-17 | PICC (peripherally inserted central catheter), producing method thereof, and extruding machine for producing PICC |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510423286.9A CN106334249A (en) | 2015-07-17 | 2015-07-17 | PICC (peripherally inserted central catheter), producing method thereof, and extruding machine for producing PICC |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106334249A true CN106334249A (en) | 2017-01-18 |
Family
ID=57826805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510423286.9A Pending CN106334249A (en) | 2015-07-17 | 2015-07-17 | PICC (peripherally inserted central catheter), producing method thereof, and extruding machine for producing PICC |
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|---|---|
| CN (1) | CN106334249A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113601816A (en) * | 2021-08-06 | 2021-11-05 | 上海核工程研究设计院有限公司 | A die equipment suitable for extrusion of large diameter HDPE thick-walled pipes |
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|---|---|---|---|---|
| CA1214754A (en) * | 1983-12-13 | 1986-12-02 | Joseph A. Simon | Process for forming integral spindle-axle tubes |
| US6022341A (en) * | 1997-10-03 | 2000-02-08 | Medtronic, Inc. | Catheter with multiple internal diameters |
| US20120245563A1 (en) * | 2011-03-22 | 2012-09-27 | Navilyst Medical, Inc. | High flow catheters |
| CN204352348U (en) * | 2014-12-09 | 2015-05-27 | 孙小薇 | Integral type flexible gradual change blood vessel microtubular |
| CN204745298U (en) * | 2015-07-17 | 2015-11-11 | 上海千山医疗科技有限公司 | Extruder of PICC pipe and preparation PICC pipe |
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- 2015-07-17 CN CN201510423286.9A patent/CN106334249A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1214754A (en) * | 1983-12-13 | 1986-12-02 | Joseph A. Simon | Process for forming integral spindle-axle tubes |
| US6022341A (en) * | 1997-10-03 | 2000-02-08 | Medtronic, Inc. | Catheter with multiple internal diameters |
| US20120245563A1 (en) * | 2011-03-22 | 2012-09-27 | Navilyst Medical, Inc. | High flow catheters |
| CN204352348U (en) * | 2014-12-09 | 2015-05-27 | 孙小薇 | Integral type flexible gradual change blood vessel microtubular |
| CN204745298U (en) * | 2015-07-17 | 2015-11-11 | 上海千山医疗科技有限公司 | Extruder of PICC pipe and preparation PICC pipe |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113601816A (en) * | 2021-08-06 | 2021-11-05 | 上海核工程研究设计院有限公司 | A die equipment suitable for extrusion of large diameter HDPE thick-walled pipes |
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