CN110834405A - Manufacturing process of plastic injection needle and product thereof - Google Patents
Manufacturing process of plastic injection needle and product thereof Download PDFInfo
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- CN110834405A CN110834405A CN201811392330.4A CN201811392330A CN110834405A CN 110834405 A CN110834405 A CN 110834405A CN 201811392330 A CN201811392330 A CN 201811392330A CN 110834405 A CN110834405 A CN 110834405A
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- needle
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- injection
- injection molding
- needle tube
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- 229920003023 plastic Polymers 0.000 title claims abstract description 52
- 239000004033 plastic Substances 0.000 title claims abstract description 52
- 238000002347 injection Methods 0.000 title claims abstract description 35
- 239000007924 injection Substances 0.000 title claims abstract description 35
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 29
- 238000001746 injection moulding Methods 0.000 claims abstract description 27
- 238000000034 method Methods 0.000 claims abstract description 23
- 230000008569 process Effects 0.000 claims abstract description 16
- 239000002994 raw material Substances 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 11
- 238000000465 moulding Methods 0.000 claims abstract description 11
- 229920000954 Polyglycolide Polymers 0.000 claims description 11
- 239000004743 Polypropylene Substances 0.000 claims description 11
- 239000004633 polyglycolic acid Substances 0.000 claims description 11
- 229920001155 polypropylene Polymers 0.000 claims description 11
- -1 polypropylene Polymers 0.000 claims description 8
- 239000004698 Polyethylene Substances 0.000 claims description 6
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 claims description 6
- 229920000573 polyethylene Polymers 0.000 claims description 6
- 229920001273 Polyhydroxy acid Polymers 0.000 claims description 4
- 229920003232 aliphatic polyester Polymers 0.000 claims description 4
- UVCJGUGAGLDPAA-UHFFFAOYSA-N ensulizole Chemical compound N1C2=CC(S(=O)(=O)O)=CC=C2N=C1C1=CC=CC=C1 UVCJGUGAGLDPAA-UHFFFAOYSA-N 0.000 claims description 4
- 229920009537 polybutylene succinate adipate Polymers 0.000 claims description 4
- 229920000515 polycarbonate Polymers 0.000 claims description 4
- 239000004417 polycarbonate Substances 0.000 claims description 4
- 229920000642 polymer Polymers 0.000 claims description 4
- 229920003048 styrene butadiene rubber Polymers 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims 3
- 210000004204 blood vessel Anatomy 0.000 abstract description 5
- 239000002184 metal Substances 0.000 description 9
- 239000012634 fragment Substances 0.000 description 7
- 239000012530 fluid Substances 0.000 description 6
- 238000005520 cutting process Methods 0.000 description 5
- 229920001971 elastomer Polymers 0.000 description 5
- 239000005060 rubber Substances 0.000 description 5
- 238000001035 drying Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000004506 ultrasonic cleaning Methods 0.000 description 3
- 238000010241 blood sampling Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000010253 intravenous injection Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 210000003205 muscle Anatomy 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000003911 water pollution Methods 0.000 description 2
- 241000282412 Homo Species 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009534 blood test Methods 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000010255 intramuscular injection Methods 0.000 description 1
- 239000007927 intramuscular injection Substances 0.000 description 1
- 238000010999 medical injection Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
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- 229920002545 silicone oil Polymers 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000010254 subcutaneous injection Methods 0.000 description 1
- 239000007929 subcutaneous injection Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/76—Measuring, controlling or regulating
- B29C45/78—Measuring, controlling or regulating of temperature
-
- 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
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B13/00—Conditioning or physical treatment of the material to be shaped
- B29B13/02—Conditioning or physical treatment of the material to be shaped by heating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/76—Measuring, controlling or regulating
- B29C45/77—Measuring, controlling or regulating of velocity or pressure of moulding material
-
- 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
- A61M2207/00—Methods of manufacture, assembly or production
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76494—Controlled parameter
- B29C2945/76498—Pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76494—Controlled parameter
- B29C2945/76531—Temperature
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Hematology (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention relates to a manufacturing process of a plastic injection needle, which realizes one-step molding by adopting a single plastic or double-material injection molding process, wherein the injection molding process comprises the following steps: s1: preheating the plastic raw material in an oven at the temperature of 80-150 ℃ for 2-8 hours; s2: performing injection molding on the preheated plastic raw material in the S1 in an injection molding machine, wherein the molding temperature is 180-350 ℃, and the injection molding pressure is 50-800N; s3: injection molding is carried out on the needle seat (1) by adopting the methods in S1 and S2; s4: the syringe (2) was injection-molded by the methods of S1 and S2. The plastic injection needle manufactured by the process can completely avoid the problems of blockage of a needle head and blockage of blood vessels due to falling of scraps caused by rough surface of the needle tube.
Description
Technical Field
The invention relates to the field of devices for introducing media into a body in a mode of subcutaneous injection, intravenous injection or intramuscular injection, in particular to a manufacturing process of a plastic injection needle and a product thereof.
Background
The production process flow of the traditional injection needle is as follows: 316L seamless steel pipe → heating and pulling pipe → cutting pipe → ultrasonic cleaning → drying → arranging and pasting glue for fixation → grinding needle point → high pressure cleaning → checking (removing) burr → whole bundle → ultrasonic cleaning → checking and blocking → checking burr → re-ultrasonic cleaning → drying → pasting needle → drying → applying silicon oil → covering protective cap. The prior injection needle production process has the following defects: the process is complex, the automatic production cannot be realized, the energy consumption is high, a large amount of water is needed for cleaning, the water pollution is caused, and the production period is too long.
Most of the existing puncture needles are metal needles, the needles for medical injection are formed by bonding a steel needle and a plastic head, the metal needles are composed of rigid needle tubes, needle points and needle holes for the inlet and outlet of fluid, the needle tubes and the needle points are connected together, and the needle holes for the inlet and outlet of the fluid are arranged on the needle points. Most of the technological methods adopted for the final forming of the sharp needle point of the metal needle head are grinding, the grinding material in a grinding tool is hard and angular abrasive particles, the hard edges of the abrasive particles dig a groove on the surface of a processed blank and remove the part of the original blank in the groove, and the essence of the grinding technology is the mass accumulation of the processes. When the metal needle is used for puncturing, when the rough metal surface is tightly attached to a punctured object and slides downwards, a large amount of tiny cutting processes can occur, and the punctured object is chipped and falls off. When a metal needle is used for puncturing a rubber plug on an injection package, the fallen rubber fragments can enter the injection, and the insoluble particles can enter a human body together with the injection, so that the health and the safety of a patient are damaged. When muscle or vein injection is carried out, a bevel needle is used, the bottom of a needle hole of the metal needle head is provided with a crescent sharp cutting edge, small fragments caused by micro cutting fall off after the metal needle head enters a human body, and sometimes larger tissue fragments fall off, so that the needle head can be blocked and blood vessels can be blocked. In the blood sampling using the vacuum tube, since many fragments falling off from the puncture rubber plug are fine particles with the diameter of several micrometers, in the item of blood test, when the visible components with different sizes need to be classified and counted, the test result may be interfered.
The existing production process of the injection needle has the defects of complex process, incapability of automatic production, high energy consumption, serious water pollution caused by the need of washing by a large amount of water, long production period, falling of scraps of a rubber plug when the rubber plug is punctured due to the manufacturing process of the metal needle, possibility of blocking the needle head, blocking blood vessels and the like.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides a manufacturing process of a plastic injection needle and a product thereof.
The invention adopts the following technical scheme:
a technology for making plastic injection needle features use of single or dual plastic injection moulding to realize one-step moulding.
Specifically, the manufacturing process comprises the following steps:
s1: preheating the plastic raw material in an oven at the temperature of 80-150 ℃ for 2-8 hours;
s2: performing injection molding on the preheated plastic raw material in the S1 in an injection molding machine, wherein the molding temperature is 180-350 ℃, and the injection molding pressure is 50-800N;
s3: injection molding is carried out on the needle seat by adopting the methods of S1 and S2;
s4: the syringe was injection molded using the methods of S1 and S2.
Specifically, in the manufacturing of the needle seat, the plastic raw material is polypropylene (PP), acrylonitrile-styrene-butadiene copolymer (ABS), Polyethylene (PE), polyglycolic acid (PGA) or α -hydroxyalkanoate (PHA).
Specifically, in the needle tube production, the plastic material is polyhydroxyacid (PGA, PLA), aliphatic polyester polymer (PES, PBS, PBSA), polycyclolactones (PBL, PVL, PCL), Polycarbonates (PTMC), or α -hydroxyalkanoate (PHA).
Specifically, the connection firm force of the needle seat and the needle tube is 10-100N.
From the viewpoint of selected materials, plastics such as polypropylene (PP), polyhydroxyacids (PGA, PLA), aliphatic polyester polymers (PES, PBS, PBSA), polycyclolactones (PBL, PVL, PCL), Polycarbonates (PTMC), α -hydroxyalkanoates (PHA), and the like are recognized as green plastics harmless to humans and environment, and polypropylene (PP) can be called as green plastics because its structure is closely related to human life's triad C, H, O, and meets the environmental protection requirements no matter whether recycled or burned, and has excellent plasticity, temperature resistance, impact resistance, and lightest specific gravity, and can be used as an optimal material for plastic-substituted steel and plastic-substituted wood, and can be used as an automobile material, a green environment-friendly building material, an environment-friendly medical device, a household appliance product, and the like which meet the requirements for light weight.
The plastic injection needle manufactured by the manufacturing process of the invention meets the national standard.
In particular, the plastic injection needle manufactured according to the above process,
the diameter of the needle tube is 0.1-3.5mm,
the thickness of the needle tube and the inner diameter of the needle tube is 0.05-2.5mm,
the length of the needle tube is 4-100mm, the length of the needle tube is the distance from the edge of the needle tube and the needle seat which are integrally connected to each other to the tip of the needle point,
the toughness requirement of the needle tube is 5-35mm,
the needle point is provided with three sections, a first section, a second section and a third section,
the first section angle is at 11 ° ± 5 ° (LB) or 17 ° ± 5 ° (SB),
the piercing force of the first section, the second section, the third section and the needle point tip is 0.2-1.5N.
The plastic injection needle manufactured according to the process consists of a needle seat, a needle tube, a needle tip and the inner diameter of the needle tube for the fluid to enter and exit, wherein the needle seat, the needle tube and the needle tip are integrally formed and connected together, and the needle tip connected with the needle tube is arranged at one end of the needle tube and is only one; the inner diameter of the needle tube for the fluid to enter and exit is opened on the needle point, the needle point is wedge-shaped, and the part of the inclined annular frontal surface of the needle point formed by the injection molding process is all injection molded by plastic or resin. The surface of the liquid is smooth during final solidification due to the surface tension of the liquid which minimizes its surface area, and prevents fine debris from falling off during penetration. The plastic injection needle provided by the invention can be used in a plurality of operations needing puncture, such as medicine dispensing, transfusion, blood sampling, muscle or intravenous injection and the like, and the main reason for the falling of fragments of puncture objects is eliminated because the part with the needle point formed by one-time injection molding has no possibility of carrying out a large amount of micro cutting, so that the phenomenon of the falling of the fragments in the puncture process of various puncture objects can be greatly reduced.
Compared with the prior art, the invention has the following beneficial effects: the plastic injection needle has the advantages of simplified process, automatic production and short production period through the process of drying PP and PGA plastic raw materials → injection molding → burr detection and incomplete molding → blockage detection → silicone oil application → protective cap covering, and the injection needle formed by the plastic material avoids the problems of needle head blockage and blood vessel blockage caused by rough surface of the needle tube and chip falling off in the puncture process.
Drawings
Fig. 1 is a schematic cross-sectional view of a plastic injection needle product of the present invention;
fig. 2 is a perspective view of the needle of a plastic injection needle product of the present invention;
fig. 3 is a right side view of the needle head of a plastic injection needle product of the present invention;
in the figures, specific reference numerals are as follows: the needle base 1, the needle tube 2, the needle point 3, the needle point tip 4, the inner diameter 5 of the needle tube, the first tangent plane 6, the second tangent plane 7 and the third tangent plane 8.
Detailed Description
The invention is described in detail below with reference to the accompanying drawings.
A technology for making plastic injection needle features use of single or dual plastic injection moulding to realize one-step moulding.
The injection molding process of the needle base 1 comprises the following steps:
s1: preheating the plastic raw material in an oven at the temperature of 80-120 ℃ for 2-8 hours;
s2: and (5) performing injection molding on the preheated plastic raw material in the step (S1) in an injection molding machine at the molding temperature of 180-260 ℃ and the injection pressure of 50-800N to obtain a finished product of the needle seat 1.
The manufacturing process of the needle tube 2 comprises the following steps:
s1: preheating the plastic raw material in an oven at the temperature of 100-150 ℃ for 2-8 hours;
s2: and (3) performing injection molding on the preheated plastic raw material in the step (S1) in an injection molding machine at the molding temperature of 240-350 ℃ and the injection molding pressure of 50-800N to obtain a finished product of the needle tube 2.
In the manufacture of the needle holder 1, the plastic raw material is polypropylene (PP), acrylonitrile-styrene-butadiene copolymer (ABS), Polyethylene (PE), polyglycolic acid (PGA) or α -hydroxyalkanoate (PHA).
In the production of the needle tube 2, the plastic material is selected from the group consisting of polyhydroxyacids (PGA, PLA), aliphatic polyester polymers (PES, PBS, PBSA), polycyclolactones (PBL, PVL, PCL), Polycarbonates (PTMC) and α -hydroxyalkanoates (PHA).
Wherein the firm connection force between the needle stand 1 and the needle tube 2 is 10-100N.
The plastic injection needle manufactured by the manufacturing process of the invention meets the national standard, referring to fig. 1-3, the diameter of a needle tube 2 is 0.1-3.5mm, the thickness of the needle tube 2 and the inner diameter 5 of the needle tube is 0.05-2.5mm, the length of the needle tube 2 is 4-100mm, the length of the needle tube 2 is the distance from the edge of the integral molding connection of the needle tube 2 and a needle base 1 to a needle point tip 4, the thickness of the needle tube 2 and the inner diameter 5 of the needle tube is 0.05-0.3mm, the toughness requirement of the needle tube 2 is 5-35mm, the needle point 3 is provided with three sections, namely a first section 6, a second section 7 and a third section 8, the angle of the first section 6 is 11 degrees +/-5 degrees (LB) or 17 degrees +/-5 degrees (SB), and the piercing force of the first section 6, the second section 7, the third section 8 and the needle point 4 is 0.2-1..
The plastic injection needle comprises a needle seat 1, a needle tube 2, a needle point 3 and a needle tube inner diameter 5 for fluid to enter and exit, wherein the needle seat 1, the needle tube 2 and the needle point 3 are integrally formed and connected together, and the needle point 3 connected with the needle tube 2 is arranged at one end of the needle tube 2 and is only one; the inner diameter 5 of the needle tube for the fluid to enter and exit is opened on the needle point 3, the needle point 3 is wedge-shaped, the inclined annular frontal surface of the needle point 3 formed by the injection molding process is all molded by plastic or resin, and the problems of needle head blockage and blood vessel blockage caused by the falling of fragments in the puncture process due to rough surface of the needle tube 2 are avoided.
The foregoing detailed description is given by way of example only, to better enable one of ordinary skill in the art to understand the patent, and is not to be construed as limiting the scope of what is encompassed by the patent; any equivalent alterations or modifications of the apparatus according to the present disclosure are intended to fall within the scope of the present disclosure.
Claims (6)
1. A manufacturing process of a plastic injection needle is characterized in that a single-plastic or double-material injection molding process is adopted to realize one-time molding.
2. A process for making a plastic injection needle as defined in claim 1, comprising the steps of:
s1: preheating the plastic raw material in an oven at the temperature of 80-150 ℃ for 2-8 hours;
s2: performing injection molding on the preheated plastic raw material in the S1 in an injection molding machine, wherein the molding temperature is 180-350 ℃, and the injection molding pressure is 50-800N;
s3: injection molding is carried out on the needle seat (1) by adopting the methods in S1 and S2;
s4: the syringe (2) was injection-molded by the methods of S1 and S2.
3. A process for manufacturing a plastic injection needle according to claim 2, wherein in the manufacturing of the needle holder (1), the plastic material is polypropylene (PP), acrylonitrile-styrene-butadiene copolymer (ABS), Polyethylene (PE), polyglycolic acid (PGA), or α -hydroxyalkanoate (PHA).
4. A process for manufacturing a plastic injection needle according to claim 3, wherein the plastic material used for manufacturing the needle tube (2) is a polyhydroxyacid compound (PGA, PLA), an aliphatic polyester polymer (PES, PBS, PBSA), a polycyclolactone compound (PBL, PVL, PCL), a polycarbonate compound (PTMC) or α -hydroxyalkanoate (PHA).
5. A process for manufacturing a plastic injection needle according to claim 1, wherein the connection fastness of the needle base (1) and the needle tube (2) is 10-100N.
6. A plastic injection needle manufactured by the process according to any of claims 1 to 5,
the diameter of the needle tube (2) is 0.1-3.5mm,
the thickness of the needle tube (2) and the inner diameter (5) of the needle tube is 0.05-2.5mm,
the length of the needle tube (2) is 4-100mm, the length of the needle tube (2) is the distance from the edge of the needle tube (2) and the needle seat (1) which are integrally connected to the tip (4) of the needle point,
the toughness requirement of the needle tube (2) is 5-35mm,
the needle point (3) is provided with three sections, a first section (6), a second section (7) and a third section (8),
the angle of the first section (6) is either 11 DEG + -5 DEG (LB) or 17 DEG + -5 DEG (SB),
the piercing force of the first tangent plane (6), the second tangent plane (7), the third tangent plane (8) and the needlepoint sharp head (4) is 0.2-1.5N.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2018109378841 | 2018-08-17 | ||
| CN201810937884 | 2018-08-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110834405A true CN110834405A (en) | 2020-02-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811392330.4A Pending CN110834405A (en) | 2018-08-17 | 2018-11-21 | Manufacturing process of plastic injection needle and product thereof |
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| CN (1) | CN110834405A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113588662A (en) * | 2021-07-28 | 2021-11-02 | 扬州美德莱医疗用品有限公司 | Accurate image detection method and system for processing of injection needle |
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| JPH0751371A (en) * | 1993-08-17 | 1995-02-28 | Daikyo Seiko:Kk | Injection needle and its production method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113588662A (en) * | 2021-07-28 | 2021-11-02 | 扬州美德莱医疗用品有限公司 | Accurate image detection method and system for processing of injection needle |
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Application publication date: 20200225 |