CN114569802A - Safe beauty-maintaining pulling wire and preparation method thereof - Google Patents

Safe beauty-maintaining pulling wire and preparation method thereof Download PDF

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Publication number
CN114569802A
CN114569802A CN202210154193.0A CN202210154193A CN114569802A CN 114569802 A CN114569802 A CN 114569802A CN 202210154193 A CN202210154193 A CN 202210154193A CN 114569802 A CN114569802 A CN 114569802A
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wire
degradable
cosmetic
tooth section
section
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CN114569802B (en
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宗洁
王晓
魏晨光
徐海东
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Suzhou Origin Medical Technology Co ltd
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Suzhou Origin Medical Technology Co ltd
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/0059—Cosmetic or alloplastic implants
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L31/00—Materials for other surgical articles, e.g. stents, stent-grafts, shunts, surgical drapes, guide wires, materials for adhesion prevention, occluding devices, surgical gloves, tissue fixation devices
    • A61L31/02—Inorganic materials
    • A61L31/022—Metals or alloys
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L31/00—Materials for other surgical articles, e.g. stents, stent-grafts, shunts, surgical drapes, guide wires, materials for adhesion prevention, occluding devices, surgical gloves, tissue fixation devices
    • A61L31/14—Materials characterised by their function or physical properties, e.g. injectable or lubricating compositions, shape-memory materials, surface modified materials
    • A61L31/148—Materials at least partially resorbable by the body
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass

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  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Veterinary Medicine (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Cardiology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Transplantation (AREA)
  • Biomedical Technology (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Cosmetics (AREA)

Abstract

The invention discloses a safe beauty pulling line and a preparation method thereof, relating to the technical field of medical beauty surgery. Cosmetic pull wire of safe type, including degradable wire with prevent the thorn sawtooth, degradable wire with prevent that the thorn sawtooth is made by degradable metal, prevent that the thorn sawtooth includes ratch and fillet end block, ratch fixed connection is on degradable wire, fillet end block fixed connection is in the one end that degradable wire was kept away from to the ratch. The preparation method comprises the following steps: rolling the degradable metal into a metal plate, and leveling and cutting the metal plate to obtain a plate to be cut; cutting a rough beauty pulling line on a plate to be cut in a laser cutting mode; and sequentially cleaning, drying, vacuum packaging and sterilizing the rough cosmetic pulling wire to obtain the safe cosmetic pulling wire. The cosmetic lifting wire material is made of degradable metal, and the rounded end block is arranged, so that the wound healing time and the infection risk of human tissues are reduced.

Description

Safe beauty-maintaining pulling wire and preparation method thereof
Technical Field
The invention relates to the technical field of medical beauty surgery, in particular to a safe beauty lifting line and a preparation method thereof.
Background
The beauty treatment pulling line is a beauty treatment line with barbs or saw teeth on the surface, and the barbs or the saw teeth are formed on the surface of the beauty treatment line by a cold processing or hot processing mode to improve the pulling effect of the beauty treatment pulling line.
In the related art, the cold working generally cuts the wire body by a cutter, and multi-dimensional barbs are formed on the wire body. The hot processing is to inject the melted raw materials into a mould by adopting a hot-pressing injection molding process to manufacture the integrally formed beauty line with barbs. However, whether cold or hot, the barbs or serrations on the cosmetic lift wire are formed with sharp tips.
In view of the above-mentioned related art, the inventors believe that after the cosmetic pull-up wire is implanted into the human body, the barbs may damage the surrounding human tissue during the process of pulling the cosmetic pull-up wire, increasing the wound healing time and the risk of infection.
Disclosure of Invention
In order to reduce the wound healing time and infection risk of human tissues, the application provides a safe beauty pulling line and a preparation method thereof.
In a first aspect, the application provides a safe cosmetic pull line, which adopts the following technical scheme:
the safe cosmetic lifting wire comprises a degradable metal wire and anti-stab saw teeth, wherein the degradable metal wire and the anti-stab saw teeth are both made of degradable metal, the anti-stab saw teeth comprise a rack bar and a fillet end block, the rack bar is fixedly connected to the degradable metal wire, and the fillet end block is fixedly connected to one end, far away from the degradable metal wire, of the rack bar.
By adopting the technical scheme, the fillet end block is arranged at the end part of the toothed bar, and the corners of the fillet end block are circular-arc fillets, so that when the cosmetic lifting wire is lifted, the mechanical damage to human tissues can be reduced, the damage degree of the human tissues is smaller, and the healing is easier. Meanwhile, the degradable metal has an anti-inflammatory effect and can stimulate the generation of collagen in the process of human tissue proliferation, so that the safe beauty lifting wire is beneficial to accelerating the wound healing of the human tissue and reducing the risk of wound infection. Therefore, the application helps to reduce the wound healing time and infection risk of human tissues by using degradable metals as cosmetic pull wire materials and by providing rounded end blocks.
In a specific possible embodiment, a forward tooth section and a reverse tooth section are arranged on the degradable metal wire, the forward tooth section and the reverse tooth section are both provided with stab-resistant sawteeth, the forward tooth section and the reverse tooth section are both fixedly connected with a tooth bar, and the tooth bar on the forward tooth section is opposite to the tooth bar of the reverse tooth section in the inclination direction.
By adopting the technical scheme, the anti-stab sawteeth on the forward tooth section and the reverse tooth section can improve the lifting effect of the safe cosmetic lifting wire. And because the tooth bar on the positive tooth section and the tooth bar on the negative tooth section are opposite in inclination direction, the loose human tissue can be lifted towards the opposite direction, and the effect of lifting the human tissue towards different directions by using one safe cosmetic lifting wire is realized, so that the human tissue is tightened, and the cosmetic effect of the safe cosmetic lifting wire is improved.
In a specific possible embodiment, the degradable metal wire is further provided with a hook section, a middle toothless section and a rear toothless section, the hook section is fixedly connected with one end of the forward tooth section, which is far away from the reverse tooth section, the middle toothless section is connected between the forward tooth section and the reverse tooth section, and the rear toothless section is connected with one end of the reverse tooth section, which is far away from the forward tooth section.
By adopting the technical scheme, the hook section is beneficial to fixing the degradable metal wire on the traction material, and the degradable metal wire is convenient to be pulled to move in human tissues; the middle toothless section is used for separating the forward tooth section from the reverse tooth section, and the surface of the rear toothless section is not provided with stabproof sawteeth, so that the friction force on human tissues is reduced, and the injury degree on wounds is further reduced.
In a specific embodiment, two opposite sides of the degradable metal wire are provided with a plurality of anti-stab saw teeth, the anti-stab saw teeth are sequentially arranged along the axial direction of the degradable metal wire, and the anti-stab saw teeth on the two sides of the degradable metal wire are arranged in a staggered manner.
Through adopting above-mentioned technical scheme, both sides all set up prevents stinging the sawtooth, help supporting and promote lax human tissue for human tissue can tighten up, helps reaching better cosmetic effect. Moreover, the anti-stab sawteeth on the two sides are arranged in a staggered mode, so that the effect of supporting and improving human tissues can be achieved, the density of the anti-stab sawteeth can be reduced, and the secondary damage of the anti-stab sawteeth to the human tissues is reduced.
In a specific possible embodiment, the included angle between the toothed bar and the degradable metal wire is 25-60 degrees, the included angle between the rounded end block and the degradable metal wire is 5-17 degrees, and the ratio of the diameter of the degradable metal wire to the maximum distance between the rounded end blocks at two sides of the degradable metal wire is 1 (1.5-2.5).
By adopting the technical scheme, after the inclination angles of the toothed bar and the fillet end blocks and the distances between the fillet end blocks on the two sides are adjusted for a plurality of times, the inventor finds that the inclination angles of the toothed bar and the fillet end blocks are controlled within the range, so that the resistance of the safe cosmetic lifting wire is reduced, the damage of the safe cosmetic lifting wire to human tissues is further reduced, the wound healing time of the human tissues is shorter, and the infection risk is smaller. The diameter of the degradable metal wire is 0.2-0.6 mm.
In a specific embodiment, the degradable metal is one of zinc, zinc-magnesium alloy, zinc-copper alloy, zinc-silver alloy, magnesium-zinc alloy.
By adopting the technical scheme, the metals can be degraded in vivo, and the degradation speed is relatively slow, which shows that the lifting effect of the safe beauty lifting line made of the metals lasts longer.
In a second aspect, the preparation method of the safe cosmetic lift line provided by the application adopts the following technical scheme:
a preparation method of a safe beauty treatment pulling line comprises the following steps:
pretreatment: rolling the degradable metal into a metal plate, and leveling and cutting the metal plate to obtain a plate to be cut;
laser cutting: cutting a rough beauty pulling line on a plate to be cut in a laser cutting mode;
refining: and sequentially cleaning, drying, vacuum packaging and sterilizing the rough cosmetic pulling wire to obtain the safe cosmetic pulling wire.
By adopting the technical scheme, the plate to be cut is prepared firstly, so that the cutting is convenient, and the cutting process is more convenient; the laser cutting can be adopted to quickly cut the rough cosmetic pulling line, and the rough cosmetic pulling line is refined subsequently, so that the risk of wound infection caused by scraps or bacteria can be reduced.
In a specific implementation scheme, in the laser cutting stage, a laser cutting machine is used for cutting the board to be cut, the power of the laser cutting machine is 440-.
By adopting the technical scheme, the emitted laser can quickly cut the board to be cut and reduce energy consumption under the parameters of the laser cutting machine.
In a specific embodiment, in the laser cutting stage, the crude cosmetic pulling wire is cut on the plate to be cut in an inert gas environment with the gas pressure of 0.75-1.0MPa, and the inert gas is at least one of nitrogen or argon.
By adopting the technical scheme, the cutting safety is improved and safety accidents in the cutting process are reduced in the inert gas environment with the air pressure.
In a specific embodiment, in the pretreatment stage, the degradable metal is rolled into a metal plate with a thickness of 0.2-0.6mm at 400 ℃ and 200-.
By adopting the technical scheme, the degradable metal can be rapidly softened at the temperature, and the thickness of the metal plate is controlled within the range, wherein the temperature is preferably 220-350 ℃, which is beneficial to cutting into the rough cosmetic pulling line.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the cosmetic lifting wire is made of degradable metal, and the rounded end block is arranged, so that the wound healing time and the infection risk of human tissues are reduced;
2. the application is provided with the forward tooth section and the reverse tooth section, which is beneficial to tightening human tissues and improves the beauty effect of the safe beauty pull wire;
3. the preparation method can quickly cut the beauty pulling line, and reduces the risk of wound infection caused by scraps or bacteria.
Drawings
Fig. 1 is a schematic structural view of a safety cosmetic lift wire according to embodiment 1 of the present application.
Fig. 2 is an enlarged view at a in fig. 1.
Fig. 3 is a front view of the safety cosmetic pull-cord of embodiment 1 of the present application.
Fig. 4 is an enlarged view at B in fig. 3.
Fig. 5 is a schematic structural view of the safety cosmetic pulling wire according to embodiment 2 of the present application.
Description of reference numerals:
1. degradable metal wires; 11. a forward tooth segment; 12. a reverse tooth segment; 13. a hook section; 14. a middle toothless section; 15. a rear end toothless section; 2. the saw teeth are prevented from being pierced; 21. a rack bar; 22. a rounded end block.
Detailed Description
The present application is described in further detail below with reference to figures 1-5.
The embodiment of the application discloses safe type beauty treatment is carried and is acted as go-between.
Example 1
Referring to fig. 1, the safety cosmetic pull string includes a degradable wire 1 and stab-resistant serrations 2. The degradable metal wire 1 is made of degradable metal, the degradable metal is any one of zinc, zinc-magnesium alloy, zinc-copper alloy, zinc-silver alloy, magnesium and magnesium-zinc alloy, and the degradable metal wire 1 of the embodiment is made of zinc. The stab-resistant sawteeth 2 are integrally connected on the degradable metal wire 1.
The stab-resistant sawteeth 2 are a plurality of, all the stab-resistant sawteeth 2 are averagely divided into two rows, the stab-resistant sawteeth 2 in each row are sequentially arranged along the axial direction of the degradable metal wire 1, the degradable metal wire 1 is positioned between the two rows of the stab-resistant sawteeth 2, and the two rows of the stab-resistant sawteeth 2 are axially symmetrical along the degradable metal wire 1. The ratio of the diameter of the degradable metal wire 1 to the maximum distance between the stab-resistant teeth 2 on both sides of the degradable metal wire 1 is 1 (1.5-2.5), and the ratio of the diameter of the degradable metal wire 1 to the maximum distance between the stab-resistant teeth 2 on both sides of the degradable metal wire 1 is 1:2 in the embodiment.
Referring to fig. 2, the stab-resistant serration 2 comprises a rack bar 21 and a rounded end block 22, wherein one end of the rack bar 21 is integrally connected to the side wall of the degradable metal wire 1, the included angle between the length direction of the rack bar 21 and the axial direction of the degradable metal wire 1 is 25 to 60 degrees, and the included angle between the length direction of the rack bar 21 and the axial direction of the degradable metal wire 1 is 50 degrees in the embodiment. The fillet end block 22 is a square block with the corners of circular arc-shaped structures, the middle part of the fillet end block 22 is integrally connected with one end of the rack bar 21 far away from the degradable metal wire 1, the included angle between the length direction of the fillet end block 22 and the axial direction of the degradable metal wire 1 is 5-17 degrees, and the included angle between the length direction of the fillet end block 22 and the axial direction of the degradable metal wire 1 is 9 degrees.
Referring to fig. 3, the degradable wire 1 includes a forward tooth section 11, a reverse tooth section 12, a hook section 13, a middle toothless section 14, and a rear toothless section 15. The hook section 13 is in a hook shape, and one end of the positive tooth section 11 is integrally connected with one end of the hook section 13; one end of the middle toothless section 14 is integrally connected with one end of the forward toothed section 11 away from the hook section 13. The reverse tooth section 12 is located between the middle toothless section 14 and the rear toothless section 15, one end of the reverse tooth section 12 is integrally connected with one end of the middle toothless section 14 far away from the forward tooth section 11, and the other end of the reverse tooth section 12 is integrally connected with one end of the rear toothless section 15.
The forward tooth section 11, the reverse tooth section 12, the middle toothless section 14 and the rear toothless section 15 are cuboids, the forward tooth section 11, the reverse tooth section 12, the middle toothless section 14 and the rear toothless section 15 are coaxial, the widths and heights of the forward tooth section 11, the reverse tooth section 12, the middle toothless section 14 and the rear toothless section 15 are 0.39mm, the length of the hook section 13 is 3mm, the lengths of the forward tooth section 11 and the reverse tooth section 12 are 50mm, the length of the middle toothless section 14 is 7mm, and the length of the rear toothless section 15 is 50mm, so that the length of the degradable metal wire 1 in the embodiment is 16 cm.
Referring to fig. 4, the rack bars 21 are integrally connected to the side walls of the forward rack segment 11 and the reverse rack segment 12, the side walls where the two rows of rack bars 21 are located are opposite, the two rows of rack bars 21 are staggered along the axial direction of the degradable metal wire 1, and the staggered arrangement distance of the two rows of rack bars 21 in this embodiment is 0.9 mm. The distance between two adjacent rack bars 21 in the same row on the forward tooth section 11 is equal, and the distance between two adjacent rack bars 21 in the same row on the forward tooth section 11 of this embodiment is 1.8 mm. The distance between two adjacent rack bars 21 in the same row on the reverse tooth section 12 is equal, and the distance between two adjacent rack bars 21 in the same row on the reverse tooth section 12 of this embodiment is 1.8 mm. The direction of inclination of the rack bar 21 on the forward tooth section 11 is opposite to the direction of inclination of the rack bar 21 on the reverse tooth section 12, and the direction of inclination of the fillet 22 on the forward tooth section 11 is opposite to the direction of inclination of the fillet 22 on the reverse tooth section 12.
The implementation principle of the embodiment 1 is as follows: the method comprises the steps of turning the outer skin of a zinc ingot, cutting the zinc ingot into metal blocks with the thickness of 90mm multiplied by 60mm multiplied by 20mm, rolling the metal blocks into metal plates with the thickness of 0.39mm by a rolling mill at the temperature of 250 ℃, flattening the metal plates, and cutting the plates to be cut with the length multiplied by 200mm multiplied by 140 mm.
Placing a plate to be cut on a clamp of a laser cutting machine, setting the power of the laser cutting machine to be 440W, the frequency to be 300Hz and the pulse width to be 30ms under the protection of nitrogen with the air pressure of 0.75Mpa, and cutting a rough beauty pulling line on the plate to be cut, wherein the shape of the rough beauty pulling line is the same as that of the safety beauty pulling line in the embodiment.
Then, the crude beauty-treatment pulling line is placed in ethanol for ultrasonic cleaning, and then drying, vacuum packaging and sterilization are carried out, so that the safe beauty-treatment pulling line of the embodiment is obtained.
Example 2
Referring to fig. 5, the present embodiment is different from embodiment 1 in that the degradable metal wire 1 of the present embodiment is made of a magnesium-zinc alloy. The ratio of the diameter of the degradable metal wire 1 to the maximum distance between the stab-resistant teeth 2 on both sides of the degradable metal wire 1 in this embodiment is 1: 1.5.
The width and height of the forward tooth section 11, the reverse tooth section 12, the middle toothless section 14 and the rear toothless section 15 of this embodiment are both 0.6mm, the length of the hook section 13 is 1.5mm, the length of the forward tooth section 11 and the length of the reverse tooth section 12 are both 45mm, the length of the middle toothless section 14 is 8.5mm, and the length of the rear toothless section 15 is 40mm, so the length of the degradable metal wire 1 of this embodiment is 14 cm.
The angle between the length direction of the rack bar 21 and the axial direction of the degradable metal wire 1 is 30 degrees in this embodiment. The angle between the length direction of the rounded end block 22 and the axial direction of the degradable metal wire 1 is 6 DEG in the present embodiment
The implementation principle of the embodiment 2 is as follows: the magnesium-zinc alloy is cut into metal blocks of 90mm x 60mm x 20mm after being subjected to skin turning, the metal blocks are rolled into metal plates of 0.6mm by a rolling mill at 350 ℃, the metal plates are flattened, and the plates to be cut are cut into plates of 200mm x 140mm in length x width.
Placing a plate to be cut on a clamp of a laser cutting machine, setting the power of the laser cutting machine to 1055W, the frequency to 1000Hz and the pulse width to 100ms under the protection of nitrogen with the air pressure of 1.0Mpa, and cutting a rough beauty pulling line on the plate to be cut, wherein the shape of the rough beauty pulling line is the same as that of the safety beauty pulling line in the embodiment.
Then, the crude beauty-treatment pulling line is placed in ethanol for ultrasonic cleaning, and then drying, vacuum packaging and sterilization are carried out, so that the safe beauty-treatment pulling line of the embodiment is obtained.
The embodiment of the application also discloses a preparation method of the safe beauty-treatment pulling line.
The preparation method of the safe cosmetic pulling line comprises the following steps:
pretreatment: rolling the degradable metal into a metal plate with the thickness of 0.2-0.6mm by using a rolling mill at the temperature of 200 ℃ and 400 ℃, leveling the metal plate, and cutting the metal plate into a plate to be cut with the length multiplied by the width of 200mm multiplied by 140 mm;
laser cutting: on a laser cutting machine, a laser cutting mode is adopted to cut a rough cosmetic pulling line on a plate to be cut, the power of the laser cutting machine is 440-1055W, the frequency of the laser cutting machine is 300-1000Hz, and the pulse width of the laser cutting machine is 30-600 ms.
Refining: and placing the rough cosmetic pulling wire in ethanol for ultrasonic cleaning, and then sequentially drying, vacuum packaging and sterilizing to obtain the safe cosmetic pulling wire.
Performance test
Tensile tests were carried out at room temperature: the stretching rate is 200mm/min, and the gauge length is 100 mm. The results of the tensile test are shown in table 1.
In vitro degradation experiments
The safety type beauty treatment pulling lines of examples 1-2 were each statically placed in 100ml PBS buffer (pH 7.40), soaked at 37 ℃ for 8 weeks, and the in vitro degradation rate was measured. The in vitro degradation rate of example 1 was about 0.054 mm/year, and the in vitro degradation rate of example 2 was about 0.058 mm/year.
TABLE 1 breaking Strength (N) and tensile Strength (MPa) of examples 1-2
Figure 97790DEST_PATH_IMAGE001
According to tensile test and table 1, the zinc-based safe cosmetic lifting wire and the magnesium-zinc alloy-based safe cosmetic lifting wire obtained by laser cutting both have good mechanical properties.
According to in vitro degradation experiments, the safe cosmetic pulling lines of examples 1-2 can be degraded slowly in PBS buffer. This demonstrates that the safe cosmetic pull-up wires of examples 1-2 all degrade slowly in vivo, with longer pull-up durations.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (10)

1. The safe cosmetic pulling line is characterized in that: including degradable wire (1) and prevent thorn sawtooth (2), degradable wire (1) with prevent thorn sawtooth (2) and make by degradable metal, prevent thorn sawtooth (2) including ratch (21) and fillet end block (22), ratch (21) fixed connection is on degradable wire (1), fillet end block (22) fixed connection is in ratch (21) the one end of keeping away from degradable wire (1).
2. The safety cosmetic pull-wire according to claim 1, wherein: be equipped with forward tooth section (11) and reverse tooth section (12) on degradable wire (1), all be equipped with on forward tooth section (11) and reverse tooth section (12) and prevent stinging sawtooth (2), forward tooth section (11) and reverse tooth section (12) all with ratch (21) fixed connection, ratch (21) on forward tooth section (11) and ratch (21) the slope opposite direction of reverse tooth section (12).
3. The safety cosmetic pull-wire according to claim 2, wherein: still be equipped with crotch section (13), middle part toothless section (14) and rear end toothless section (15) on degradable wire (1), one end fixed connection of reverse tooth section (12) is kept away from in crotch section (13) and forward tooth section (11), middle part toothless section (14) are connected between forward tooth section (11) and reverse tooth section (12), the one end of keeping away from forward tooth section (11) in reverse tooth section (12) is connected in rear end toothless section (15).
4. The safety cosmetic pull-wire according to claim 1, wherein: degradable metal wire (1) relative both sides all are equipped with a plurality of and prevent thorn sawtooth (2), prevent that thorn sawtooth (2) arrange in proper order along the axial of degradable metal wire (1), the mistake sets up between preventing thorn sawtooth (2) of degradable metal wire (1) both sides.
5. The safety cosmetic pull-wire according to claim 1, wherein: the included angle between the toothed bar (21) and the degradable metal wire (1) is 25-60 degrees, the included angle between the rounded corner end block (22) and the degradable metal wire (1) is 5-17 degrees, and the ratio of the diameter of the degradable metal wire to the maximum distance between the rounded corner end blocks (22) on two sides of the degradable metal wire (1) is 1 (1.5-2.5).
6. The safety cosmetic pull-wire according to claim 1, wherein: the degradable metal is one of zinc, zinc-magnesium alloy, zinc-copper alloy, zinc-silver alloy, magnesium and magnesium-zinc alloy.
7. A method of preparing a safe cosmetic pull-cord according to any one of claims 1 to 6, comprising the steps of:
pretreatment: rolling the degradable metal into a metal plate, and leveling and cutting the metal plate to obtain a plate to be cut;
laser cutting: cutting a rough beauty pulling line on a plate to be cut in a laser cutting mode;
refining: and sequentially cleaning, drying, vacuum packaging and sterilizing the rough cosmetic pulling wire to obtain the safe cosmetic pulling wire.
8. The method for preparing a safe cosmetic pull-cord according to claim 7, wherein: in the laser cutting stage, a laser cutting machine is adopted to cut the plate to be cut, the power of the laser cutting machine is 440-.
9. The method for preparing a safe cosmetic pull-cord according to claim 7, wherein: in the laser cutting stage, cutting a rough cosmetic pulling line on a plate to be cut in an inert gas environment with the gas pressure of 0.75-1.0MPa, wherein the inert gas is at least one of nitrogen or argon.
10. The method for preparing a safe cosmetic pull-cord according to claim 7, wherein: in the pretreatment stage, the degradable metal is rolled into a metal plate at the temperature of 200-400 ℃, and the thickness of the metal plate is 0.2-0.6 mm.
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