CN113769181B - Cosmetic blunt needle with automatic blood vessel avoiding function for micro-shaping - Google Patents
Cosmetic blunt needle with automatic blood vessel avoiding function for micro-shaping Download PDFInfo
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- CN113769181B CN113769181B CN202111015251.3A CN202111015251A CN113769181B CN 113769181 B CN113769181 B CN 113769181B CN 202111015251 A CN202111015251 A CN 202111015251A CN 113769181 B CN113769181 B CN 113769181B
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- head
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- 210000004204 blood vessel Anatomy 0.000 title claims abstract description 63
- 239000002537 cosmetic Substances 0.000 title claims abstract description 28
- 238000007493 shaping process Methods 0.000 title claims abstract description 18
- 239000007788 liquid Substances 0.000 claims abstract description 58
- 238000002347 injection Methods 0.000 claims abstract description 35
- 239000007924 injection Substances 0.000 claims abstract description 35
- 230000007704 transition Effects 0.000 claims abstract description 33
- 230000007246 mechanism Effects 0.000 claims abstract description 14
- 238000007789 sealing Methods 0.000 claims description 26
- 230000000149 penetrating effect Effects 0.000 claims description 19
- 238000001125 extrusion Methods 0.000 claims description 9
- 230000001154 acute effect Effects 0.000 claims description 8
- 230000002792 vascular Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 25
- 230000008569 process Effects 0.000 abstract description 25
- 238000013461 design Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000012545 processing Methods 0.000 abstract description 6
- 238000009434 installation Methods 0.000 description 13
- 230000006835 compression Effects 0.000 description 8
- 238000007906 compression Methods 0.000 description 8
- 238000000605 extraction Methods 0.000 description 6
- 230000001105 regulatory effect Effects 0.000 description 6
- 230000008961 swelling Effects 0.000 description 3
- 208000034656 Contusions Diseases 0.000 description 2
- 208000005189 Embolism Diseases 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 206010052428 Wound Diseases 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 210000001789 adipocyte Anatomy 0.000 description 2
- 230000003796 beauty Effects 0.000 description 2
- 230000000740 bleeding effect Effects 0.000 description 2
- 208000034526 bruise Diseases 0.000 description 2
- 210000004027 cell Anatomy 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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- KIUKXJAPPMFGSW-DNGZLQJQSA-N (2S,3S,4S,5R,6R)-6-[(2S,3R,4R,5S,6R)-3-Acetamido-2-[(2S,3S,4R,5R,6R)-6-[(2R,3R,4R,5S,6R)-3-acetamido-2,5-dihydroxy-6-(hydroxymethyl)oxan-4-yl]oxy-2-carboxy-4,5-dihydroxyoxan-3-yl]oxy-5-hydroxy-6-(hydroxymethyl)oxan-4-yl]oxy-3,4,5-trihydroxyoxane-2-carboxylic acid Chemical compound CC(=O)N[C@H]1[C@H](O)O[C@H](CO)[C@@H](O)[C@@H]1O[C@H]1[C@H](O)[C@@H](O)[C@H](O[C@H]2[C@@H]([C@@H](O[C@H]3[C@@H]([C@@H](O)[C@H](O)[C@H](O3)C(O)=O)O)[C@H](O)[C@@H](CO)O2)NC(C)=O)[C@@H](C(O)=O)O1 KIUKXJAPPMFGSW-DNGZLQJQSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000000601 blood cell Anatomy 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 229920002674 hyaluronan Polymers 0.000 description 1
- 229960003160 hyaluronic acid Drugs 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 210000005036 nerve Anatomy 0.000 description 1
- 230000002980 postoperative effect Effects 0.000 description 1
- 231100000241 scar Toxicity 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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Classifications
-
- 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
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
-
- 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
- A61M5/3286—Needle tip design, e.g. for improved penetration
Landscapes
- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Engineering & Computer Science (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention discloses a cosmetic blunt needle with an automatic blood vessel avoiding function for micro-shaping, which comprises a needle seat, an eccentric needle head and a needle seat, wherein the needle seat is sealed and arranged on a liquid discharge head of an injection tube; the needle seat comprises a connecting seat and a rotary retraction device, the tail end of the connecting seat is matched and arranged on the liquid discharge head, and a transition channel communicated with the liquid discharge head is axially formed in the middle of the front end of the connecting seat; the rotational retraction device includes an outer housing and a retraction control mechanism; the invention has unique structure and convenient use, can automatically avoid blood vessels in the needle inserting process, and effectively solves the problem that the existing blunt needle is easy to puncture blood vessels in tissues when in use; the cosmetic blunt needle provided by the invention adopts a split assembly design, so that the processing and production of all parts are facilitated.
Description
Technical Field
The invention belongs to the technical field of medical cosmetology, and particularly relates to a cosmetic blunt needle with an automatic blood vessel avoiding function for micro-shaping.
Background
Common items such as puncture, injection and the like are not separated from medical cosmetic and plastic, such as clinical venipuncture, plastic fat autograft, hyaluronic acid injection, wrinkle removal and the like; the needle and the device for extracting the injection are different, and the damage to cells and medicines is also different; the traditional sharp needle head is extracted and injected, so that the damage to cells, blood vessels, nerves and fiber structures is easy to cause, and the blood stasis and swelling after operation are easy to cause. In addition, the sharp needle has short length, limited injection range and can not inject deeper parts, thereby bringing about technical limitation; the length of the blunt needle is longer than that of the sharp needle, can reach 5-10cm, can reach deeper injection or extraction, has relatively simple hierarchical control, has less severe operation requirements on medical staff, and has been widely accepted in the medical and cosmetic industries in recent years.
Along with the continuous chase of people and the higher and higher requirements on beauty, the accurate and efficient of scar wound and cosmetic plastic after clinical operation becomes the urgent problem to be solved, in the use process of the traditional blunt needle, although fat in tissues is softer, and the blunt needle top is in a blunt circle shape and can smoothly advance in the tissues, but blood vessels are like networks in human bodies, everywhere and have certain hardness, so if the blunt needle top bumps on the blood vessels, if the needle top is still forced to be sent inwards, the needle top can puncture the blood vessels, so that bleeding in the tissues causes bruise and swelling in puncture areas, and even some fillers can enter the blood vessels to cause embolism, thereby affecting health.
Disclosure of Invention
Aiming at the defects and problems of the existing blunt needle, the invention provides the beauty blunt needle with the function of automatically avoiding blood vessels for micro-shaping, the blunt needle has unique structure and convenient use, and not only can automatically avoid blood vessels in the needle inserting process, but also effectively solves the problem that the existing blunt needle is easy to puncture blood vessels in tissues when in use; the cosmetic blunt needle provided by the invention adopts a split assembly design, so that the processing and production of all parts are facilitated.
The invention solves the technical problems by adopting the scheme that: a cosmetic blunt needle with automatic blood vessel avoiding function for micro-shaping comprises a needle seat sealed on the liquid discharge head of an injection tube, and also comprises an eccentric needle head, wherein the tail end of the eccentric needle head is arranged in the needle seat in a matching way and is communicated with the liquid discharge port of the liquid discharge head in a sealing way through the needle seat; the needle seat comprises a connecting seat and a rotary retraction device, the tail end of the connecting seat is matched and arranged on the liquid discharge head, and a transition channel communicated with the liquid discharge head is axially formed in the middle of the front end of the connecting seat; the rotary retraction device comprises an outer sleeve shell and a retraction control mechanism, wherein the tail end of the outer sleeve shell is arranged at the front end of the connecting seat in a matching way, a columnar mounting cavity is arranged in the outer sleeve shell along the transverse direction, and the mounting cavity and the transition channel are coaxially arranged and are mutually communicated; the middle part of the front cavity wall of the mounting cavity is provided with a needle penetrating hole communicated with the outside along the axial direction, the tail end of the eccentric needle head is matched and sleeved in the needle penetrating hole, and the tail end of the eccentric needle head penetrates through the mounting cavity to be inserted into a transition channel of the connecting seat in a sealing way and can rotate and slide along the inner wall of the transition channel; the retraction control mechanism is arranged in the mounting cavity and comprises a front tooth column, a rear tooth column and a top supporting torsion spring, wherein the front tooth column is rotationally sleeved on the eccentric needle and can drive the eccentric needle to axially slide along the mounting cavity; the rear end face of the front tooth column is circumferentially provided with a plurality of arc right-angle driving teeth, the acute tooth tips of the driving teeth are axially outwards arranged, and the rear tooth column is slidably sleeved on the eccentric needle at intervals at the rear side of the front tooth column and can drive the eccentric needle to synchronously rotate; the back tooth post is equipped with a plurality of arc right angle form rotation teeth that match with the drive tooth along the circumference towards the terminal surface of preceding tooth post, rotates tooth quantity and drive tooth quantity the same, the back shore torsion spring cover is established on the eccentric needle of back tooth post, two front and back of back shore torsional spring respectively with adjacent preceding tooth post and connecting seat fixed connection, and the back shore torsional spring can push up preceding tooth post and order about the acute angle tooth point of rotation tooth and the tooth point meshing of corresponding drive tooth under the free state.
The middle part of preceding tooth post is opened along the axial has the mounting hole, is equipped with the axle sleeve in the mounting hole to rotate the cover through the axle sleeve and install on the epaxial eccentric needle of intracavity, and the outer annular of preceding tooth post and the annular inner chamber wall slip of installation cavity 411 paste and touch, the spacing spout that extends to on the preceding tooth post is offered along the axial on the outer annular of drive tooth sharp angle tooth point one side, and the spacing guide rail is installed in the matching of spacing spout, spacing guide rail along radial protruding spacing spout to with adjacent side installation intracavity annular wall fixed connection.
And clamping springs are matched on the eccentric needles on the front side and the rear side of the front tooth column, so that the axial position of the front tooth column on the eccentric needle in the installation cavity is further limited.
The middle part of the front end face of the connecting seat is provided with a threaded connecting hole along the axial direction, the threaded connecting hole and the transition channel are coaxially arranged, one port of the transition channel is positioned at the bottom of the threaded connecting hole, and the tail end of the outer sleeve shell is installed in the threaded connecting hole in a matching way.
The outer sleeve shell comprises a tubular shell body and a shell cover, wherein two ends of the tubular shell body are provided with openings, a cylindrical cavity in the tubular shell body is a mounting cavity, external threads matched with internal threads of the threaded connection holes are arranged on the circumferential side wall of the tubular shell body, the shell cover is in threaded connection with the front end of the tubular shell body, the front end opening of the tubular shell body is plugged, and a needle penetrating hole communicated with the outside is formed in the middle of the shell cover on the front side of the mounting cavity along the axial direction.
The eccentric needle head comprises a needle stem, the tail end of the needle stem is matched and sleeved in a needle penetrating hole, the tail end of the needle stem penetrates through the mounting cavity to be inserted into the transition channel of the connecting seat in a sealing mode, a spherical needle point is plugged at the top end of the needle stem, a liquid outlet communicated with the inside is formed in the circumferential side wall of the needle stem at the rear side of the spherical needle point in the radial direction, and the spherical needle point and the needle stem are eccentrically arranged.
The circumference lateral wall of the needle peduncles at the rear side of the spherical needle tip is provided with three liquid outlets at intervals along the circumference, and the three liquid outlets are distributed at intervals along the axial direction.
The tail end of the connecting seat is provided with a fixing groove which is matched with the liquid discharge head along the axial direction and is matched and sealed and nested on the liquid discharge head.
The inner ring arm of the fixed groove is provided with an annular groove along the circumference, and is provided with a sealing ring in a matching way, when the connecting seat is embedded on the liquid discharge head in a matching way, the sealing ring in the fixed groove can be deformed by the extrusion of the connecting seat and the liquid discharge head.
The sealing piece is arranged in the front end of the transition channel of the connecting seat in a matching way, the tail end of the eccentric needle head penetrates through the sealing piece to be inserted into the fixed channel in a matching way, and the sealing piece can strengthen the sealing strength between the outer ring surface of the eccentric needle head and the inner ring arm of the transition channel on the premise that the tail end of the eccentric needle head is not influenced to rotate and slide in the transition channel.
The invention has the beneficial effects that: the cosmetic blunt needle with the automatic blood vessel avoiding function for micro-shaping provided by the invention has a unique structure, comprises a needle seat and an eccentric needle head, adopts a split assembly design, and is convenient for processing, production and assembly for use; the needle seat comprises a connecting seat and a rotary retraction device, the rotary retraction device is connected with a liquid discharge head of the injection tube through the connecting seat, the rotary retraction device comprises an outer sleeve shell and a retraction control mechanism, the outer sleeve shell is connected with the connecting seat, a columnar mounting cavity is arranged in the outer sleeve shell, the eccentric needle head comprises a needle stem, the tail end of the needle stem is matched and goes deep into the mounting cavity and passes through the mounting cavity to be sealed and inserted into a transition channel of the connecting seat, a spherical needle point is plugged at the top end of the needle stem, a liquid outlet communicated with the inside is formed in the circumferential side wall of the needle stem at the rear side of the spherical needle point in a radial direction, the spherical needle point and the needle stem are eccentrically arranged, and the retraction control mechanism is arranged in the mounting cavity.
The needle head is characterized in that the needle head is provided with a rotary tooth bevel edge, a front tooth column is driven to slide backwards along a limiting track by continuously pushing the eccentric needle head into the tissue through the injection cylinder, the rear tooth column is driven to rotate by driving the needle stem, the spherical needle tip contacted with the blood vessel in the tissue can follow the needle stem to rotate around a needle stem central shaft when the needle stem rotates, the needle head is separated from the contacted blood vessel, the purpose of automatically avoiding the blood vessel in the tissue is realized, after the eccentric needle tip is led to avoid the blood vessel, the resistance of a torsion spring can be reduced, the top support can reversely twist and reset, the rear tooth column is driven to reversely rotate and reset, in the process, the reversely rotated rotary tooth bevel edge is driven to slide backwards along the rotary tooth bevel edge, the front tooth column is driven to drive the retracted needle to extend backwards, the needle stem is driven to automatically retract in the blood vessel when the needle stem rotates, the needle stem is driven to repeatedly in the direction of the blood vessel, the needle stem is driven to continuously retract in the blood vessel, and the blood vessel is prevented from rotating forwards in the blood vessel, the blood vessel is prevented from being penetrated in the process, and the blood vessel is prevented from being repeatedly used in the process, and the blood vessel is prevented from being penetrated in the blood vessel is prevented from being damaged.
The invention provides a cosmetic blunt needle for micro-shaping, which has a unique structure and convenient use, can automatically avoid blood vessels in the needle inserting process, and effectively solves the problem that the existing blunt needle is easy to puncture blood vessels in tissues when in use; the cosmetic blunt needle provided by the invention adopts a split assembly design, so that the processing and production of all parts are facilitated.
Drawings
Fig. 1 is a schematic diagram of the structure of the present invention.
Fig. 2 is an enlarged schematic view of the structure at a in fig. 1.
Fig. 3 is a schematic view of the structure of the connector of the present invention.
FIG. 4 is a schematic view of the rotational retraction device of the present invention.
Fig. 5 is a physical view of the internal structure of the tubular housing of the present invention.
FIG. 6 is a schematic view of the relationship between the front and rear posts of the present invention.
Fig. 7 is a schematic perspective view of a rear tooth post according to the present invention.
FIG. 8 is a schematic diagram of the connection between the rear tooth post and the needle stem.
Fig. 9 is a schematic view of the setting position of the limit key of the present invention.
Fig. 10 is a schematic perspective view of the front tooth post of the present invention.
FIG. 11 is a schematic view of the connection between the front tooth post and the needle stem.
Fig. 12 is a schematic view of the needle stem retraction process of the present invention.
Fig. 13 is a schematic view of the structure of the limit rail according to the present invention.
FIG. 14 is a schematic view of the spring seat mounting location of the present invention.
FIG. 15 is an expanded view of the positional relationship between the driving teeth and the spacing track according to the present invention.
FIG. 16 is a second schematic view of the needle stem retraction process of the present invention.
FIG. 17 is a schematic view of the position of the eccentric needle of the present invention where the liquid outlet is opened.
Fig. 18 is a schematic view of the friction adjusting member of the present invention.
Fig. 19 is an enlarged schematic view of the structure at B in fig. 18.
Reference numerals in the drawings: 1 is an injection tube, 11 is a liquid discharge head, 2 is a needle seat, 3 is a connecting seat, 31 is a fixed slot, 32 is a transition channel, 33 is a threaded connecting hole, 4 is a rotary retraction device, 401 is a tubular shell, 402 is a shell cover, 411 is a mounting cavity, 412 is a needle penetrating hole, 42 is a front tooth column, 421 is a driving tooth, 422 is a limiting sliding groove, 43 is a rear tooth column, 431 is a sliding sleeve, 432 is a limiting key, 433 is a rotary tooth, 44 is a top supporting torsion spring, 45 is a reset spring, 47 is a limiting track, 48 is a spring seat, 5 is an eccentric needle, 51 is a needle stem, 52 is a spherical needle point, 53 is a liquid outlet, 6 is a friction adjusting component, 61 is a sliding sleeve, 611 is a squeezing slot, 62 is a locking sleeve, 63 is a thread sleeve, 64 is a guide block, and 65 is a compression ring.
Detailed Description
The invention will be further described with reference to the drawings and examples.
Example 1
In the use process of the existing blunt needle, although fat in tissues is softer, and the tip of the blunt needle is blunt and round, the blood vessel can smoothly move forward in the tissues, but the blood vessel is in a netty shape in a human body, is everywhere and has a certain hardness, so that if the tip of the blunt needle head bumps on the blood vessel, if the needle head is still forced to be sent inwards, the tip of the needle head pierces the blood vessel, internal bleeding of the tissues causes bruise and swelling of a puncture area, and even some fillers can enter the blood vessel to cause embolism, thereby affecting health; and the top end of the existing blunt needle is provided with a liquid outlet, so that when the extraction or injection is carried out, the single extraction or injection amount is small, and the large-area extraction or injection can be finished only by multiple needle insertion, thereby further aggravating the postoperative wound of the patient.
To above-mentioned problem, this embodiment provides a cosmetic blunt needle that is used for micro-plastic to have automatic dodging vascular function, and this cosmetic blunt needle's needle point is eccentric setting, when eccentric needle goes deep into the tissue, runs into vascular deep resistance when increasing when smooth going forward in fat, cosmetic blunt needle's needle point can automatic directional rotation retract to dodge the hindrance blood vessel for adjustment needle point position, and dodge and hinder automatic extension reset after the blood vessel, specific structure is as follows:
As shown in fig. 1-12, the cosmetic blunt needle for micro-shaping comprises a needle seat 2 which is sealed and sleeved on a liquid discharge head 11 of an injection tube 1, and also comprises an eccentric needle head 5, wherein the eccentric needle head 5 comprises a needle stem 51, the top end of the needle stem 51 is plugged and provided with a spherical needle point 52, the circumferential side wall of the needle stem 51 at the rear side of the spherical needle point 52 is radially provided with a liquid outlet 53 communicated with the inside, and the spherical needle point and the needle stem are eccentrically arranged; the tail end of the needle stalk 51 is arranged in the needle seat in a matching way and is communicated with a liquid outlet of the liquid outlet head in a sealing way through the needle seat, so that when the piston in the injection cylinder 1 is pushed, injection in the injection cylinder can enter the needle stalk through the needle seat 2 and be discharged from the liquid outlet; the needle point at the top end of the eccentric needle head is spherical, so that the eccentric needle head can smoothly shuttle in tissues.
The needle seat 2 comprises a connecting seat 3 and a rotary driving device 4, the connecting seat 3 is in a transverse column shape, the tail end of the connecting seat 3 is provided with a fixed groove 31 which is matched with the liquid discharge head 5 along the axial direction and is matched and sealed on the liquid discharge head in a nested manner, and the middle part of the front end of the connecting seat 3 is provided with a columnar transition channel 32 which is communicated with the liquid discharge head along the axial direction; further, the annular groove is formed in the inner annular arm of the fixing groove along the circumference, the sealing ring is installed in a matched mode, after the connecting seat is matched and nested on the liquid discharge head, the sealing ring in the fixing groove can be extruded by the connecting seat and the liquid discharge head to deform, and therefore tightness between the connecting seat 3 and the liquid discharge head is further enhanced.
The rotation driving device 4 includes the overcoat shell 41 and the control mechanism that contracts, and the front end at the connecting seat is installed in the matching of overcoat shell 41 tail end, and transversely is equipped with the column installation cavity along in the overcoat shell, and installation cavity and the coaxial heart setting of transition passageway communicate each other, and the diameter size of installation cavity is greater than the diameter size of transition passageway, and there are multiple overcoat shell 41 and the connecting seat's connected mode, for example: the middle part of the front end face of the connecting seat 3 is provided with a threaded connection hole along the axial direction, the threaded connection hole is arranged coaxially with the transition channel 32, one port of the transition channel 32 is positioned at the bottom of the threaded connection hole, the tail end of the outer casing 41 is installed in the threaded connection hole in a matched mode, the outer casing 41 is of a split type structure, the tubular casing 401 and the casing cover 402 with two ends being ports are included, a cylindrical cavity inside the tubular casing 401 is provided with an installation cavity 411, the circumferential side wall of the tubular casing 401 is provided with external threads matched with internal threads of the threaded connection hole, the casing cover is in threaded connection with the front end of the tubular casing, the front port of the tubular casing is plugged, and the middle part of the casing cover on the front side of the installation cavity is provided with a needle penetrating hole 412 communicated with the outside along the axial direction.
The tail end of the needle stem of the eccentric needle head is matched and sleeved in the needle penetrating hole 412, the tail end of the needle stem 51 penetrates through the mounting cavity to be inserted into the transition channel of the connecting seat in a sealing way, and can rotate and slide along the inner wall of the transition channel, when the piston in the injection cylinder 1 is pushed, injection in the injection cylinder can enter the needle stem through the needle seat 2, and is discharged from the liquid outlet; further, the front end of the transition channel 32 of the connecting seat 3 is internally matched with a sealing element, the tail end of the eccentric needle head penetrates through the sealing element to be matched and inserted into the fixed channel, and the sealing element can enhance the sealing strength between the outer ring surface of the eccentric needle head and the inner ring arm of the transition channel on the premise that the tail end of the eccentric needle head is not influenced to rotate and slide in the transition channel.
The retraction control mechanism is arranged in the mounting cavity, when the blocked force is increased when the eccentric needle goes deep into tissues, the retraction control mechanism can automatically drive the eccentric needle to directionally rotate and retract into the outer casing, avoid the obstruction, and after the obstruction is avoided, the retraction control mechanism can control the eccentric needle to automatically extend and reversely rotate and reset.
As shown in fig. 4-11, the retraction control mechanism includes a front tooth post 42, a rear tooth post 43 and a top supporting torsion spring 44, wherein the front tooth post 42 is rotatably sleeved on the needle stem of the eccentric needle in the mounting cavity 411 and can drive the eccentric needle to axially slide along the mounting cavity, specifically: the middle part of the front tooth column is axially provided with a mounting hole, a shaft sleeve is arranged in the mounting hole and is rotationally sleeved on the needle stem 51 through the shaft sleeve, the outer ring surface of the front tooth column is in sliding contact with the annular inner cavity wall of the mounting cavity 411, and when the needle stem 51 axially slides in the mounting cavity, the front tooth column is synchronously driven to synchronously slide in the mounting cavity 411; further, snap springs are matched on the needle stems at the front side and the rear side of the front tooth column 411, so that the axial position of the front tooth column 411 on the needle stem 51 is further limited.
The rear end face of the front tooth column is circumferentially provided with 3 arc right-angle driving teeth 421, the acute tooth tips of the driving teeth 421 are axially outwards arranged, and the outer arc wall of the driving teeth 421 is in sliding contact with the inner cavity wall of the mounting cavity; the outer arc wall on one side of the tooth tip of each driving tooth 421 is provided with a limiting chute 422 extending to the front tooth column along the axial direction, the limiting chute 422 is internally matched with and provided with a limiting guide rail 47, the limiting guide rail 47 protrudes out of the limiting chute along the radial direction and is fixedly connected with the inner annular wall of the installation cavity on the adjacent side, and when the needle stalk 51 of the eccentric needle head is pushed and pulled externally, the needle stalk 51 can drive the front tooth column to axially slide along the limiting guide rail 47 in the installation cavity.
The rear tooth column 43 is sleeved on the needle stem of the eccentric needle at the rear side of the front tooth column 42 in a sliding way at intervals and can drive the eccentric needle to synchronously rotate; specifically:
the real peduncles in the mounting cavity at the rear side of the front tooth column are fixedly sleeved with sliding sleeves 431, clamping springs are matched with the real peduncles at the front end and the rear end of the sliding sleeves 431, the clamping springs are used for limiting the axial position of the sliding sleeves 431, the clamping springs protrude out of the sliding sleeves 431, the middle parts of the rear tooth column are axially provided with mounting holes and are slidably sleeved on the sliding sleeves 431 between the two clamping springs through shaft sleeves, and the outer ring surfaces of the front tooth column are in sliding contact with the annular inner cavity wall of the mounting cavity 411; a bar-shaped limit key 432 is arranged between the shaft sleeve and the sliding sleeve 431 and is connected with the shaft sleeve in a key manner, the rear tooth column 43 can slide back and forth on the sliding sleeve 431 along the limit key 432 through the shaft sleeve, and when the rear tooth column rotates, the needle stem is driven to synchronously rotate through the limit key 432.
A plurality of arc right-angle rotary teeth 433 matched with the driving teeth are arranged on the end face of the rear tooth column 43 facing the front tooth column along the circumference, the outer cambered surface of the rotary teeth 433 is in sliding contact with the inner annular cavity wall of the mounting cavity, and the number of the rotary teeth is 3 as same as that of the driving teeth; the front tooth column and the rear tooth column are respectively connected with the front tooth column and the connecting seat, and the front tooth column is pushed by the jacking torsion spring to drive the acute tooth tip of the rotary tooth to be meshed with the acute tooth tip of the corresponding driving tooth in a free state, namely the bevel edge end face of the tooth tip of the rotary tooth is in jacking contact with the bevel edge face of the tooth tip of the corresponding driving tooth; when the front tooth post of the eccentric needle head slides backwards along the guide track and the inner cavity wall of the installation cavity, the driving tooth moves backwards to drive the meshed rotating tooth to slide along the bevel edge end face of the driving tooth, so that the meshing area between the driving tooth and the rotating tooth is increased, the rear tooth post is driven to drive the needle stem to rotate, in the process, as the two ends of the front end of the propping torsion spring are respectively fixedly connected with the rear tooth post at the adjacent side and the hole bottom of the threaded connecting hole of the connecting seat, when the front tooth post pushes the rear tooth post to rotate, the propping torsion spring is driven by the rotating torsion force of the rear tooth post to twist, and when the pushing force of the rear tooth post is lost, the propping torsion spring is reversely twisted to reset, so that the rear tooth post is driven to reversely rotate to reset, and in the process, the reversely rotated rotating tooth drives the driving tooth to slide along the bevel edge end face of the rotating tooth, so that the front tooth post is driven to retract, and the needle stem is driven to outwards extend to reset.
The cosmetic blunt needle for micro-shaping provided by the embodiment has a unique structure, adopts a split type assembly design, and has an integral structure of the limit rail and the tubular shell of the outer sleeve, thereby being convenient for processing, production and assembly for use; when in use, the assembled cosmetic blunt needle can be matched and arranged on the liquid discharge head of the injection tube 1 for direct use.
The eccentric needle can be controlled to penetrate into tissues through the injection cylinder to conduct suction operation in the process of using the injection cylinder, and in the process of penetrating, as the needle point at the top end of the eccentric needle is spherical, the eccentric needle can smoothly shuttle in the tissues, when the spherical needle point at the top end of the eccentric needle is in contact with blood vessels in the tissues in the process of penetrating, the resistance force exerted by the eccentric needle penetrating into the tissues can be increased, the eccentric needle can be pushed into the tissues continuously through the injection cylinder to drive the front tooth column 42 to slide backwards along the limiting track, the rear tooth column is driven to drive the needle stem to rotate, when the needle stem rotates, the spherical needle point contacted with blood vessels in the tissues can follow the needle stem 51 to rotate around the central shaft of the needle stem 51, so as to be separated from the contacted blood vessels, the purpose of automatically avoiding the blood vessels in the tissues is achieved, after the eccentric needle point is avoided in the blood vessels, the resistance force exerted by the top torsion spring can be reduced, the rear tooth column is driven to reversely twist and reset, in the process of driving the rear tooth column to reversely rotate and reset, in the process, the driving tooth edge of the rotating tooth is driven to slide along the tooth edge of the rotating, the front tooth column is driven to drive the tooth to outwards extend along the limiting track, the rotating, the rear tooth edge is driven to drive the rotating, the needle stem is driven to retract outwards, and when the needle stem is driven to continuously in the process of rotating along the blood vessels, the blood vessels is driven repeatedly, the opposite direction, and the blood vessels is prevented from rotating in the blood vessels, and the blood vessels is continuously and the blood vessel, and the tissue is continuously retracted in the process can continuously and rotated.
Example 2
Embodiment 2 differs from embodiment 3 in that, as shown in fig. 12-16, a spring seat 48 is coaxially and rotatably fixed on the end face of the rear ring of the rear tooth post, and the spring seat 48 is provided in various manners for fixing the top supporting torsion spring 44, for example: the spring seat 48 is coaxially and rotatably embedded in the rear end face of the rear tooth post, one end of the propping torsion spring 48 is matched and fixed in the spring seat 48, the other end of the propping torsion spring 48 is arranged towards the rear side and is propped against the hole bottom of the threaded connection hole 33, and the needle stem is positioned in the propping torsion spring 48; the tail ends of the limiting sliding rails 47 in the limiting sliding grooves 422 extend out of the limiting sliding grooves 422 forwards along the axial direction and are in contact with the bevel end surfaces of adjacent rotating teeth, and the tail ends of the limiting sliding rails 47 are provided with bevel chamfers matched with the bevel end surfaces of the driving teeth; the supporting spring 44 pushes the inclined end surface of the rotating tooth on the rear tooth post to rotationally slide along the top end of the strip-shaped track in a free state, so that the limit track is contacted with the right-angle side end surface of the rotating tooth on the other side; still match on the front tooth post and be equipped with reset assembly, reset assembly can drive the front tooth post and slide backward along spacing slide rail and the conflict of installation cavity front chamber wall under the free state, makes the drive tooth on the front tooth post and the rotation tooth separation on the back tooth post, specifically:
The reset component comprises reset springs 45 which are respectively arranged in the corresponding limiting sliding grooves, the front end and the rear end of each reset spring are respectively propped against the rear groove wall of the corresponding limiting sliding groove and the tail end of the guide rail penetrating into the corresponding limiting sliding groove, the reset springs 45 push the front tooth column 42 to slide forwards along the inner wall of the mounting cavity 411 and the limiting rail 47 under the natural state, so that the front tooth column 42 is propped against the shell cover 402, when the blocking force of the eccentric needle penetrating into tissues is increased, the needle peduncles of the eccentric needle can drive the front tooth column 42 to slide backwards along the limiting rail, the needle peduncles can retract inwards to the needle seat, and when the eccentric needle drives the front tooth column 42 to slide backwards along the guide rail, the reset springs 45 can be extruded to generate compression deformation, so that reset power is provided for the front tooth column 42 to slide forwards along the limiting rail.
When the front tooth post of the eccentric needle head belt slides backwards along the guide track and the inner cavity wall of the installation cavity, the tooth tips of the driving teeth on the front tooth post are meshed with the tooth tips of the adjacent rotating teeth, the rotating teeth are pushed to slide backwards along the guide track and separate from the guide track, compression deformation is generated by extrusion of both the supporting torsion spring 44 and the return spring 45 in the process, after the rotating tooth guide track separates, the supporting spring in a compression state can push the rear tooth post forwards to drive the rotating tooth 433 to slide along the tooth tip bevel edge end surface of the mutually meshed driving tooth, and as the driving tooth and the rotating tooth are arc-shaped structural teeth arranged along the circumference, the needle stem is driven to rotate in a fixed angle and in a fixed direction when the supporting spring pushes the rear tooth post to drive the rotating tooth 433 to slide along the tooth tip bevel edge end surface of the mutually meshed driving tooth.
The cosmetic blunt needle for micro-shaping provided by the embodiment has a unique structure, adopts a split type assembly design, and has an integral structure of the limit rail and the tubular shell of the outer sleeve, thereby being convenient for processing, production and assembly for use; when in use, the assembled cosmetic blunt needle can be matched and arranged on the liquid discharge head of the injection tube 1 for direct use.
In the using process, the eccentric needle head can be controlled to penetrate into the tissue by holding the injection tube to perform suction operation, in the penetrating process, the needle point at the top end of the eccentric needle head is spherical, so that the eccentric needle head can smoothly shuttle in the tissue, when the spherical needle point at the top end of the eccentric needle head contacts with blood vessels in the tissue in the penetrating process, the resistance of the eccentric needle head penetrating can be increased, the eccentric needle head is pushed into the tissue continuously through the injection tube, so that the reset spring provided with the internal retraction control mechanism can generate compression deformation, the needle stem of the eccentric needle head can drive the front tooth post 42 to slide backwards along the limit track, the tooth tips of the driving teeth on the front tooth post are meshed with the tooth tips of the adjacent rotating teeth, and the rotating teeth are pushed to slide backwards along the guide track and separate from the guide track, so that the needle stem can retract inwards after the tooth guide track of the rotating teeth is separated, the compressed propping spring can push the back tooth column forwards to drive the rotary tooth 433 to slide along the bevel end face of the tooth tip of the meshed driving tooth, and the driving tooth and the rotary tooth are arc-shaped structural teeth arranged along the circumference, so that when the propping spring pushes the back tooth column to drive the rotary tooth 433 to slide along the bevel end face of the tooth tip of the meshed driving tooth, the needle stalk is driven to rotate at a fixed angle and in a fixed direction, the spherical needle tip contacted with a blood vessel in a tissue can rotate around the central axis of the needle stalk 51 along with the needle stalk 51 when the needle stalk rotates, so as to be separated from the contacted blood vessel, the aim of automatically avoiding the blood vessel in the tissue is fulfilled, when the eccentric needle head continuously goes deep into the blood vessel again, the retraction control mechanism can continuously drive the needle stalk to rotate at a fixed angle and in a fixed direction, so that when the eccentric needle head goes deep into the tissue, the blood vessel in the tissue can be automatically avoided, the blood vessel in the tissue can not be pierced, the use is convenient, and the problem that the existing blunt needle is easy to pierce the blood vessel in the tissue when in use is effectively solved; and when encountering a blood vessel obstruction in the tissue in the deep process, the angle of the liquid outlet of the needle stem can be adjusted once, so that multidirectional injection or extraction can be realized, and the injection or extraction effect is improved.
Example 3
Embodiment 3 differs from embodiment 2 in that the front end of the rotational retraction device is provided with a friction adjustment feature.
As shown in fig. 18-19, the front end of the rotary retraction device is matched with a friction adjusting part, the friction adjusting part comprises a sliding sleeve 61, a locking sleeve 62 and a threaded sleeve 63, the sliding sleeve is matched and sleeved on a needle stalk at the front side of an outer sleeve shell 41, the tail end of the sliding sleeve is propped against a shell cover at the front end of the outer sleeve, a friction surface is arranged on the inner annular surface of the sliding sleeve 61, the sliding sleeve 61 is provided with extrusion seams 611, the extrusion seams 611 are arranged in the radial direction and penetrate through the sliding sleeve, a trapezoid guide block 64 is fixed on the sliding sleeve between every two extrusion seams, the trapezoid guide blocks are arranged along the circumference, the inclined surfaces of the trapezoid guide blocks are arranged forwards, the locking sleeve 62 is coaxially sleeved on the sliding sleeve, the guide block 64 is positioned in the locking sleeve 62, a circular cone-shaped compression ring 65 is fixed in the locking sleeve at the front side of the guide block, the inclined surface of the compression ring 65 is arranged towards the extrusion block and is contacted with the inclined surface of the extrusion block, external threads are matched and arranged on the outer annular surface of the shell cover 402 of the outer sleeve, the thread sleeve 63 is matched and sleeved on the external thread at the front end of the casing cover 402 and can be screwed up in a sliding manner along the front and rear rotation of the thread, the front end of the thread sleeve extends forwards out of the casing cover 22 and is connected with the tail end of the locking sleeve, when the locking sleeve is driven to approach the rotating retraction device along the outer ring of the sliding sleeve by rotating the thread sleeve, the internal pressure ring of the locking sleeve can squeeze the guide block contacted with the internal pressure ring of the locking sleeve to squeeze the sliding sleeve inwards along the inclined plane of the guide ring, so that the friction force between the sliding sleeve and the needle stem is regulated, compared with the embodiment 3, when the blunt needle provided by the embodiment is used, the friction force between the sliding sleeve and the needle stem can be regulated through the needle stem sliding regulating component according to requirements, so that when the eccentric needle is regulated to extend into tissues, the external casing can retract outwards and the retraction and squeeze the reset component can be regulated under what pressure the eccentric needle is regulated under the premise that the reset component is not replaced, the applicability of blunt needles is increased.
Further, the sliding sleeve 61 at the rear side of the extrusion slit 611 is fixedly sleeved with a fastening sleeve, the inner ring surface of the fastening sleeve is contacted with the outer ring surface of the sliding sleeve 61, the fastening sleeve is made of iron, the shape of the sliding sleeve 61 can be effectively limited, and the situation that when the compression ring 65 applies pressure to the guide block 64, the middle part of the sliding sleeve 61 is bent and deformed due to larger stress so as to affect normal use can be effectively avoided.
Example 4
Embodiment 4 differs from embodiment 3 in that three liquid outlets are provided on the stem at the rear side of the spherical needle tip.
As shown in fig. 17, three liquid outlets are circumferentially spaced on the circumferential side wall of the needle stem at the rear side of the spherical needle tip, the liquid outlets are semicircular arc openings, and the three liquid outlets are axially spaced, namely are uniformly arranged along a spiral, compared with the embodiment 2, the three liquid outlets 53 are arranged on the eccentric needle head, so that the three liquid outlets can increase the administration points, complete large-area injection in a short time, and reduce the needle inlet points; the three liquid outlets 53 are different in distance from the spherical needle tip and are uniformly arranged in a spiral way, the arrangement mode can uniformly convey the injection to the injection part in 360-degree all-around mode, as the distances between the three liquid outlets are uniformly dispersed, large-area injection filling such as face and chest can be met, large-area injection can be completed under the condition of less needle insertion, and the operation efficiency is improved; and the liquid outlet is in a semicircular opening, so that the liquid outlet is slow and uniform, the damage of tissue cells can be reduced, the survival rate is improved, for example, when the micro-plastic autologous fat transplantation is performed, the fat cell particles can be sucked slowly, the fat cells cannot be scratched, and the survival rate of the fat particles is improved.
The foregoing has outlined the basic principles, features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the foregoing embodiments, which are described in the foregoing embodiments and description merely illustrative of the principles of the invention, and various changes and modifications may be made therein without departing from the spirit and scope of the invention, for example: the spring seat 48 is arranged at the hole bottom of the threaded connecting hole, so that the fixed connection between the propping torsion spring and the hole bottom of the threaded connecting hole is changed into rotary connection, and the propping torsion spring cannot be twisted in the process of rotation of the rear tooth column; such variations and modifications are intended to fall within the scope of the invention as claimed.
Claims (7)
1. The cosmetic blunt needle with the automatic blood vessel avoiding function for micro-shaping comprises a needle seat, which is sleeved on a liquid discharge head of an injection tube, and is characterized by also comprising an eccentric needle head, wherein the tail end of the eccentric needle head is arranged in the needle seat in a matching way and is communicated with a liquid discharge port of the liquid discharge head in a sealing way through the needle seat; the needle seat comprises a connecting seat and a rotary retraction device, the tail end of the connecting seat is matched and arranged on the liquid discharge head, and a transition channel communicated with the liquid discharge head is axially formed in the middle of the front end of the connecting seat; the rotary retraction device comprises an outer sleeve shell and a retraction control mechanism, wherein the tail end of the outer sleeve shell is arranged at the front end of the connecting seat in a matching way, a columnar mounting cavity is arranged in the outer sleeve shell along the transverse direction, and the mounting cavity and the transition channel are coaxially arranged and are mutually communicated; the middle part of the front cavity wall of the mounting cavity is provided with a needle penetrating hole communicated with the outside along the axial direction, the tail end of the eccentric needle head is matched and sleeved in the needle penetrating hole, and the tail end of the eccentric needle head penetrates through the mounting cavity to be inserted into a transition channel of the connecting seat in a sealing way and can rotate and slide along the inner wall of the transition channel; the retraction control mechanism is arranged in the mounting cavity and comprises a front tooth column, a rear tooth column and a top supporting torsion spring, the front tooth column is rotationally sleeved on the eccentric needle and can drive the eccentric needle to axially slide along the mounting cavity, a mounting hole is formed in the middle of the front tooth column along the axial direction, a shaft sleeve is arranged in the mounting hole and is rotationally sleeved on the eccentric needle in the mounting cavity through the shaft sleeve, and the outer ring surface of the front tooth column is in sliding contact with the annular inner cavity wall of the mounting cavity; the rear end face of the front tooth column is circumferentially provided with a plurality of arc right-angle driving teeth, the acute tooth tips of the driving teeth are axially outwards arranged, the outer annular face on one side of the acute tooth tips of the driving teeth is axially provided with a limit chute extending to the front tooth column, the limit chute is internally provided with a limit guide rail in a matching way, the limit guide rail protrudes out of the limit chute in the radial direction and is fixedly connected with the annular wall in the mounting cavity on the adjacent side, and eccentric needle heads on the front side and the rear side of the front tooth column are provided with snap springs in a matching way so as to further limit the axial position of the front tooth column on the eccentric needle head in the mounting cavity; the rear tooth column is sleeved on the eccentric needle at the rear side of the front tooth column in a sliding manner at intervals, and can drive the eccentric needle to synchronously rotate; the front end face and the rear end face of the rear tooth column are provided with a plurality of arc-shaped right-angle rotary teeth matched with the driving teeth along the circumference, the number of the rotary teeth is the same as that of the driving teeth, the top support torsion spring is sleeved on the eccentric needle of the rear tooth column, the front end and the rear end of the top support torsion spring are respectively fixedly connected with the adjacent front tooth column and the connecting seat, and the top support torsion spring can push the front tooth column to drive the acute angle tooth tip of the rotary teeth to be meshed with the tooth tip of the corresponding driving tooth under the free state; the eccentric needle head comprises a needle stem, the tail end of the needle stem is matched and sleeved in a needle penetrating hole, the tail end of the needle stem penetrates through the mounting cavity to be inserted into the transition channel of the connecting seat in a sealing mode, a spherical needle point is plugged at the top end of the needle stem, a liquid outlet communicated with the inside is formed in the circumferential side wall of the needle stem at the rear side of the spherical needle point in the radial direction, and the spherical needle point and the needle stem are eccentrically arranged.
2. The cosmetic blunt needle with the automatic blood vessel avoiding function for micro-shaping according to claim 1, wherein a threaded connection hole is formed in the middle of the front end face of the connecting seat along the axial direction, the threaded connection hole and the transition channel are coaxially arranged, the front port of the transition channel is positioned at the bottom of the threaded connection hole, and the tail end of the outer sleeve shell is installed in the threaded connection hole in a matching manner.
3. The cosmetic blunt needle with the automatic vascular avoidance function for micro-shaping according to claim 2, wherein the outer sleeve shell comprises a tubular shell body with central control two ends as ports and a shell cover, a cylindrical cavity inside the tubular shell body is a mounting cavity, external threads matched with the internal threads of the threaded connection holes are arranged on the circumferential side wall of the tubular shell body, the shell cover is in threaded connection with the front end of the tubular shell body and is used for plugging the front port of the tubular shell body, and a needle penetrating hole communicated with the outside is axially formed in the middle of the shell cover on the front side of the mounting cavity.
4. The cosmetic blunt needle with the automatic blood vessel avoiding function for micro-shaping according to claim 1, wherein three liquid outlets are circumferentially arranged on the circumferential side wall of the needle stem at the rear side of the spherical needle tip at intervals, and the three liquid outlets are axially arranged at intervals.
5. The cosmetic blunt needle with the automatic blood vessel avoiding function for micro-shaping according to claim 1, wherein the tail end of the connecting seat is provided with a fixing groove which is matched with the liquid discharge head along the axial direction and is matched and sealed and nested on the liquid discharge head.
6. The cosmetic blunt needle with the automatic blood vessel avoiding function for micro-shaping according to claim 5, wherein the inner annular arm of the fixing groove is provided with an annular groove along the circumference, and is provided with a sealing ring in a matching way, when the connecting seat is embedded on the liquid discharge head in a matching way, the sealing ring in the fixing groove is deformed by the extrusion of the connecting seat and the liquid discharge head.
7. The cosmetic blunt needle with the automatic blood vessel avoidance function for micro-shaping according to claim 1, wherein a sealing element is arranged in the front end of the transition channel of the connecting seat in a matching way, the tail end of the eccentric needle head penetrates through the sealing element in a matching way and is inserted into the fixed channel, and the sealing element can strengthen the sealing strength between the outer ring surface of the eccentric needle head and the inner ring arm of the transition channel on the premise that the rotation and the sliding of the tail end of the eccentric needle head in the transition channel are not influenced.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111015251.3A CN113769181B (en) | 2021-08-31 | 2021-08-31 | Cosmetic blunt needle with automatic blood vessel avoiding function for micro-shaping |
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| CN202111015251.3A CN113769181B (en) | 2021-08-31 | 2021-08-31 | Cosmetic blunt needle with automatic blood vessel avoiding function for micro-shaping |
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| CN113769181B true CN113769181B (en) | 2024-06-21 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211157856U (en) * | 2018-11-02 | 2020-08-04 | 盐城美芭医疗美容诊所 | Blunt needle for rejuvenation and plastic surgery |
| CN113017798A (en) * | 2021-03-18 | 2021-06-25 | 崇州市人民医院 | Thyroid puncture device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6206857B1 (en) * | 2000-08-22 | 2001-03-27 | Marina Ling-Ko Chen | Syringe with needle retraction arrangement |
| WO2004043514A2 (en) * | 2002-11-06 | 2004-05-27 | Mdc Investment Holdings, Inc. | Pre-filled retractable needle injection device |
| DE102005009012A1 (en) * | 2005-02-28 | 2006-08-31 | Philipp Ahrens | Needle protection sleeve for a disposable medical syringe comprises a needle mounting with a lock plate and a connected torsional spring that permits needle extension by a rotary movement |
| EP3348284A2 (en) * | 2017-01-12 | 2018-07-18 | Tecpharma Licensing AG | A method for sterilization of a fluid path for an injection device |
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2021
- 2021-08-31 CN CN202111015251.3A patent/CN113769181B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211157856U (en) * | 2018-11-02 | 2020-08-04 | 盐城美芭医疗美容诊所 | Blunt needle for rejuvenation and plastic surgery |
| CN113017798A (en) * | 2021-03-18 | 2021-06-25 | 崇州市人民医院 | Thyroid puncture device |
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