CN113730726B - Hyaluronic acid injection needle - Google Patents
Hyaluronic acid injection needle Download PDFInfo
- Publication number
- CN113730726B CN113730726B CN202111080222.5A CN202111080222A CN113730726B CN 113730726 B CN113730726 B CN 113730726B CN 202111080222 A CN202111080222 A CN 202111080222A CN 113730726 B CN113730726 B CN 113730726B
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- China
- Prior art keywords
- piston
- needle
- fixedly connected
- push rod
- groove
- Prior art date
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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 title claims abstract description 72
- 229920002674 hyaluronan Polymers 0.000 title claims abstract description 72
- 229960003160 hyaluronic acid Drugs 0.000 title claims abstract description 72
- 238000002347 injection Methods 0.000 title claims abstract description 62
- 239000007924 injection Substances 0.000 title claims abstract description 62
- 239000002184 metal Substances 0.000 claims abstract description 66
- 239000003292 glue Substances 0.000 claims description 20
- 239000002775 capsule Substances 0.000 claims description 17
- 230000003340 mental effect Effects 0.000 abstract description 4
- 230000003796 beauty Effects 0.000 abstract description 3
- 230000000704 physical effect Effects 0.000 abstract description 2
- 239000010408 film Substances 0.000 description 14
- 230000009471 action Effects 0.000 description 12
- 238000000034 method Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 9
- 230000006378 damage Effects 0.000 description 8
- 230000004630 mental health Effects 0.000 description 7
- 239000002537 cosmetic Substances 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 208000027418 Wounds and injury Diseases 0.000 description 4
- 238000004064 recycling Methods 0.000 description 4
- 230000033001 locomotion Effects 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 206010011409 Cross infection Diseases 0.000 description 2
- 206010029803 Nosocomial infection Diseases 0.000 description 2
- 241000700605 Viruses Species 0.000 description 2
- 206010052428 Wound Diseases 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 210000004204 blood vessel Anatomy 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000001815 facial effect Effects 0.000 description 2
- 208000015181 infectious disease Diseases 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 206010044565 Tremor Diseases 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 244000052616 bacterial pathogen Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
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
- 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
-
- 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
- A61M5/3129—Syringe barrels
-
- 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
- A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
- A61M5/31511—Piston or piston-rod constructions, e.g. connection of piston with piston-rod
-
- 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
- A61M5/50—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 having means for preventing re-use, or for indicating if defective, used, tampered with or unsterile
- A61M5/5066—Means for preventing re-use by disconnection of piston and piston-rod
-
- 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
- A61M5/50—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 having means for preventing re-use, or for indicating if defective, used, tampered with or unsterile
- A61M5/5086—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 having means for preventing re-use, or for indicating if defective, used, tampered with or unsterile for indicating if defective, used, tampered with or unsterile
-
- 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
- A61M2205/00—General characteristics of the apparatus
- A61M2205/27—General characteristics of the apparatus preventing use
- A61M2205/273—General characteristics of the apparatus preventing use preventing reuse, e.g. of disposables
-
- 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
- A61M2205/00—General characteristics of the apparatus
- A61M2205/27—General characteristics of the apparatus preventing use
- A61M2205/276—General characteristics of the apparatus preventing use preventing unwanted use
Landscapes
- Health & Medical Sciences (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (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 belongs to the technical field of beauty equipment, in particular to a hyaluronic acid injection needle which comprises a needle cylinder, a push rod, a needle seat, a needle head and a piston; the push rod is fixedly connected with the push plate; the lower end of the push rod is fixedly connected with a piston; the piston is connected inside the needle cylinder in a sliding way; the needle seat is detachably connected below the needle cylinder; the needle head is fixedly connected inside the needle seat; a first circular ring is fixedly connected above the inside of the needle cylinder; a plurality of sliding grooves are uniformly formed in the surface of the inner ring of the first circular ring; the surface of one side, far away from the push rod, of the chute is fixedly connected with a spring; the other end of the spring is fixedly connected with a sliding block; a ring groove is formed above the push rod; a plurality of grooves are uniformly formed below the inner part of the needle cylinder; the upper surface inside the groove is fixedly connected with an elastic metal sheet; the invention has simple structure, can solve the problems that the used hyaluronic acid injector can be recovered by lawless persons, the traditional hyaluronic acid injection needle can not be self-destroyed, the repeated use is possible, and the physical and mental effects of a user are affected to a certain extent.
Description
Technical Field
The invention belongs to the technical field of beauty equipment, and particularly relates to a hyaluronic acid injection needle.
Background
Hyaluronic acid is a substance of basal layers of human skin, is filled and injected into the skin by using an injection needle, can be continuously absorbed and decomposed by the human body, has no toxic or side effect on the human body, is the safest cosmetic filler at present, and is commonly used for injection cosmetic filling in medical cosmetic aspects; in the prior art, the used hyaluronic acid injector can be recovered by lawless persons, the traditional hyaluronic acid injector cannot be self-destroyed, the possibility of repeated use exists, the cross infection hidden danger exists in the repeatedly used injector, the virus transmission is easy to cause the facial infection of a user, and the physical and mental effects of the user are caused to a certain extent.
Some hyaluronic acid injection device's technical scheme has also appeared in the prior art, like a chinese patent of application number CN201810736460.9 discloses a cosmetic hyaluronic acid syringe that uses, including the syringe, the equal fixedly connected with chucking piece in left side of syringe inner chamber top and bottom, the equal fixedly connected with fixed box in top and bottom on syringe right side, logical groove has been seted up on the right side of fixed box inner chamber, the outside fixedly connected with of fixed box inner chamber goes up the fixed block. According to the invention, through the matching of the clamping blocks, the fixing box, the through groove, the upper fixing block, the limiting spring, the lower fixing block, the clamping block, the arc needle, the sterile block, the push rod, the piston, the clamping groove, the pushing handle, the support and the semi-arc clamping block, although the device can clamp and fix the piston and the pushing handle, the hyaluronic acid injector can only be used once, so that the hyaluronic acid injector has a self-destruction function, but when the hyaluronic acid is injected into a cosmetology, a doctor is required to accurately push the pushing handle to control the quantity of the hyaluronic acid injected, and the support fixedly connected at the pushing handle of the device can influence the quantity of the hyaluronic acid injected into the face of the cosmetology by the doctor, so that the quantity of the hyaluronic acid injected into the face of the cosmetology possibly has excessive or insufficient problems, and damage to the face of the cosmetology is caused, and the face cosmetology of the cosmetology is unfavorable.
Disclosure of Invention
In order to make up the deficiency of the prior art, solve the prior art, there is lawless persons to recycle used hyaluronic acid syringe, and the traditional hyaluronic acid syringe needle can't self-destruct, there is the possibility of re-using, the syringe re-used has hidden danger of cross infection, easy to cause virus transmission, easy to cause user's facial infection, thus cause the problem of certain influence to user's mind and body, the invention provides a hyaluronic acid syringe needle.
The technical scheme adopted for solving the technical problems is as follows: the invention relates to a hyaluronic acid injection needle, which comprises a needle cylinder, a push rod, a needle seat, a needle head and a piston; the push rod is fixedly connected with the push plate; the lower end of the push rod is fixedly connected with a piston; the piston is connected inside the needle cylinder in a sliding way; the needle seat is detachably connected below the needle cylinder; the needle head is fixedly connected inside the needle seat; a first circular ring is fixedly connected above the inside of the needle cylinder; the diameter of the inner ring of the first circular ring is larger than that of the push rod; a plurality of sliding grooves are uniformly formed in the surface of the inner ring of the first circular ring; the surface of one side, far away from the push rod, of the chute is fixedly connected with a spring; the other end of the spring is fixedly connected with a sliding block; the sliding block is connected inside the sliding groove in a sliding way, and the sliding block is designed in a hemispherical mode at one end close to the push rod; a ring groove is formed above the push rod; a plurality of grooves are uniformly formed below the inner part of the needle cylinder; the upper surface inside the groove is fixedly connected with an elastic metal sheet;
when the elastic metal sheet pressing device is in operation, in an initial state, the push plate is close to the upper end of the needle cylinder, the sliding block contacts the surface of the push rod at one end close to the push rod, the sliding block is close to the annular groove at one end close to the push rod, the sliding block is not inserted into the annular groove at the moment, the lower surface of the piston contacts the bottom surface of the inner ring of the needle cylinder, the thickness of the piston is larger than the distance between the lower surface of the bottom of the groove and the bottom surface of the inner ring of the needle cylinder, the lower end of the elastic metal sheet is extruded by the surface of the periphery of the piston, and the elastic metal sheet completely enters the groove;
before the hyaluronic acid needs to be injected into a cosmetology person, the needle seat is arranged below the needle cylinder (the connection relation between the needle seat and the needle head is the prior art), at the moment, a needle sleeve (not shown in the drawing of the invention) sleeved outside the needle head is taken down to extract the hyaluronic acid, in the process, the piston can smoothly move to the upper part inside the needle cylinder due to the arc shape of the lower end of the elastic metal sheet, the lower end of the elastic metal sheet cannot scratch the surface of the peripheral ring of the piston, when the lower surface of the piston is above the groove, the lower end of the elastic metal sheet moves to the central axis direction of the needle cylinder, the lower end of the elastic metal sheet protrudes outwards, the sliding block always contacts the outer surface of the push rod at one end close to the push rod, and the first circular ring limits the piston, so that the piston is prevented from being pulled out of the needle cylinder along with the push rod; when the hyaluronic acid needs to be injected into a cosmetology person, the needle head is penetrated into the human body, and only one hole is needed for injecting one part of the needle head because the needle head is a blunt needle, and then the needle head is injected up and down and left and right, so that wounds and blue and green stasis can be reduced, then, a finger presses a push plate, the push plate drives the push rod to enable the piston to move towards the lower part of the inner part of the needle cylinder, at the moment, under the action of a spring, one end of the slide block, which is close to the push rod, always contacts with the surface of the push rod, so that the resistance of the push rod when the push rod drives the piston to move towards the lower part of the inner part of the needle cylinder is increased, and further, excessive hyaluronic acid injected into the human body caused by excessive force by doctors is avoided, and the hyaluronic acid extrudes blood vessels of the needle head part, so that certain damage is caused to the human body; when the lower part of the piston contacts with the elastic metal sheet and is close to the surface of one side of the push rod, the piston extrudes the elastic metal sheet, so that the elastic metal sheet moves towards the inside of the groove, and the thickness of the piston is larger than the height of the groove in the vertical direction, so that when the elastic metal sheet completely enters the inside of the groove, the upper surface of the piston is higher than the lower surface of the groove in the vertical direction, thereby effectively avoiding that hyaluronic acid in the cylinder below the piston flows into the upper part of the piston through the groove due to the fact that the thickness of the piston is smaller than the height of the groove in the vertical direction, and further effectively reducing the waste of hyaluronic acid; after the injection of hyaluronic acid into human body is completed, the needle is pulled out, the device is restored to the initial state, then, the piston is made of rubber material, so that the piston has certain elasticity, the push plate is pressed by force at the moment, so that the push plate presses the push rod, the push rod presses the piston, the piston is pressed at the moment, the piston is deformed, the upper surface of the piston is lower than the lower surface of the groove in the vertical direction, the elastic metal sheets are released from the position limitation, the lower ends of the elastic metal sheets move towards the direction close to the central axis of the needle cylinder, the lower ends of the elastic metal sheets reach the upper surface of the piston, after the device is reset, the piston is pressed by external force along with the push rod to move towards the lower part inside the needle cylinder, at the moment, the sliding blocks move towards the direction close to the push rod in the inside of the sliding groove under the action of the spring, the sliding block enters the annular groove at one end close to the direction of the pushing rod, so that the pushing rod is limited and blocked, meanwhile, the upper surface of the piston contacts with the lower end of the elastic metal sheet, and the elastic metal sheet is fixedly connected to the upper surface of the inner part of the groove, so that the lower ends of the elastic metal sheets extrude the upper surface of the piston, and further, the piston is blocked and limited. And this device can reuse when doctor uses, only need to accomplish the hyaluronic acid injection after pressing hard the push pedal to the cosmetology person and can realize the self-destruction to this device to the hyaluronic acid injection needle that has self-destruction function can only single injection's problem when using is avoided, and then improves this device's practicality, improves the result of use of device.
Preferably, a rubber air bag is fixedly connected between the ring groove and the piston on the surface of the push rod;
when the device works, in an initial state, one end of the sliding block, which is close to the push rod, contacts and extrudes a rubber air bag, which is close to the lower part of the annular groove;
when injecting hyaluronic acid into human body, press the push pedal for the push pedal drives the push rod to the inside below motion of cylinder, and the slider is in being close to push rod one end contact extrusion rubber gasbag this moment, and the inside packing of rubber gasbag has carbon dioxide gas, and certain resistance is received when making the push rod to the inside downstream of cylinder, thereby effectively avoid leading to the content of injecting hyaluronic acid into human body because of the doctor when injecting hyaluronic acid, and then lead to causing certain injury to the human body because of the thrust that the doctor used is great, there is slight shake and promote the push pedal in the hand when effectively reducing doctor to human body injection hyaluronic acid, cause the too much or too little problem of injection, effectively protect cosmetology person's physical and mental health, improve this device's practicality.
Preferably, an annular groove is formed in the piston by taking the central axis of the needle cylinder as the center; the cross section of the annular groove is convex; the part of the annular groove in the vertical direction penetrates through the lower surface of the piston; the bottom surface of the inner ring of the needle cylinder is fixedly connected with a second circular ring; the central axis of the second circular ring coincides with the central axis of the needle cylinder; the upper surface of the second circular ring is fixedly connected with an elastic sheet through a bracket; the elastic sheet is annular, and the cross section of the elastic sheet is arc-shaped;
when the elastic piece works, the width of the cross section of the elastic piece in the horizontal direction is larger than the width of the cross section of the annular groove in the vertical direction, and the width of the cross section of the elastic piece in the horizontal direction is smaller than the width of the cross section of the annular groove in the horizontal direction;
when the hyaluronic acid injection needle is required to be destroyed, the width of the cross section of the elastic piece in the horizontal direction is smaller than the width of the cross section of the annular groove in the horizontal direction, and the elastic piece has certain elasticity, so that when the lower surface of the piston contacts the elastic piece, the elastic piece is extruded by the inner wall of the annular groove in the vertical direction to shrink along with the piston due to the corresponding design of the annular elastic piece and the circular notch of the annular groove in the vertical direction, the elastic piece enters the inner space of the annular groove in the horizontal direction along with the continuous downward movement of the piston, the width of the cross section of the elastic piece in the horizontal direction is larger than the width of the cross section of the annular groove in the vertical direction, the elastic piece is reset, the lower end of the elastic piece contacts the lower surface of the annular groove in the horizontal direction, and the elastic piece is limited and is blocked to the piston at the moment, so that the device cannot extract hyaluronic acid again through the piston after self-destruction, and the use safety performance of a cosmetor is improved.
Preferably, the upper surface of the elastic sheet is uniformly and fixedly connected with a plurality of clamping blocks; the tip end of the upper end of the clamping block is designed; the upper surface of the annular groove in the horizontal direction is fixedly connected with a rubber capsule; glue is filled in the rubber bag;
when the injection device is in operation, after the injection is completed, the tip part of the clamping block is still a certain distance away from the rubber capsule, the clamping block is not in contact with the rubber capsule, then when the injection needle is destroyed, a doctor is required to pull the injection needle out of a cosmetology person, then the pushing plate is pressed hard, in the process, the elastic sheet enters into the inner space of the annular groove in the horizontal direction, the tip part of the clamping block fixedly connected with the upper surface of the elastic sheet pierces the rubber capsule, so that the glue in the rubber capsule flows out, the elastic sheet is fixedly connected with the inner wall of the annular groove in the horizontal direction under the action of the glue, the piston is fixed with the bottom surface of the needle cylinder through the elastic sheet, the support and the second circular ring, the dead fixation of the piston is further realized, and the recycling of the hyaluronic acid injection needle is prevented, and the physical and mental health of the cosmetology person is damaged.
Preferably, the surfaces of the two sides of the upper part of the annular groove in the horizontal direction are fixedly connected with films; the film is positioned between the rubber capsule and the upper surface of the annular groove in the horizontal direction; the lower surface of the annular groove in the horizontal direction is provided with a collecting groove; the two collecting tanks are respectively positioned at two sides of the annular groove in the vertical direction;
when the injection device is used, the tip of the clamping block is still a certain distance away from the film after the injection is finished, then the injection needle is required to be pulled out of a cosmetology person by a doctor when the injection needle is destroyed, then the push plate is pressed hard, in the process, the elastic pieces enter the annular groove and the inner space in the horizontal direction, the lower ends of the two sides of the elastic pieces are contacted with the inner wall of the collecting groove in the vertical direction, then the piston is extruded along with the push rod, the tip of the clamping block pierces the film and the rubber bag, so that the glue in the rubber bag flows out, under the action of the film and the annular elastic pieces, the glue firstly flows into the collecting groove, the elastic pieces and the piston are mutually fixed under the action of the glue, so that the situation that after the rubber bag is pierced by the tip of the clamping block due to overlarge force of pushing the piston by the doctor, the glue in the rubber bag flows into the outside through the needle, the glue bonds other objects, and the film can effectively prevent the rubber bag from being damaged and leaking in the transportation process.
Preferably, the lower end of the elastic metal sheet is designed in a barb shape at one side close to the inner wall of the needle cylinder;
when the injection needle is destroyed in operation, a doctor pulls the injection needle out of a cosmetology person, then presses the push plate forcefully, so that the piston is extruded, the upper surface of the piston is lower than the height of the upper surface and the lower surface of the groove in the horizontal direction, the lower end of the elastic metal sheet moves towards the central axis direction of the needle cylinder, the lower end of the elastic metal sheet reaches the upper surface of the piston, at the moment, the elastic metal sheet limits the piston, after that, when an outward force acts on the push rod, the push rod drives the piston to move towards the direction far away from the bottom of the needle cylinder, the surface of the periphery of the piston contacts the lower end of the elastic metal sheet, and the lower end of the elastic metal sheet is in barb shape design at one side close to the inner wall of the needle cylinder, so that the lower end of the elastic metal sheet scrapes the surface of the periphery of the piston, and further damage to the piston is realized, the secondary use of the injection needle tube is avoided, thereby ensuring the physical and mental safety of the cosmetology person, and improving the safety performance of the device.
The beneficial effects of the invention are as follows:
1. according to the hyaluronic acid injection needle, the piston, the annular groove, the sliding block, the spring, the elastic metal sheet and the groove are arranged, so that the sliding block can limit the push rod through the annular groove and the elastic metal sheet can limit the piston, the hyaluronic acid injection liquid cannot be extracted again after hyaluronic acid injection is completed by the push rod, the problem that a person with an illegal manufacturer is easy to infect germs due to recycling of the hyaluronic acid injection needle is effectively avoided, and physical and mental health of the person with the beauty is effectively protected.
2. According to the hyaluronic acid injection needle, when the push rod moves towards the lower part of the inside of the needle cylinder, the rubber air bag, the sliding block and the push rod are arranged, and one end of the sliding block, which is close to the push rod, is contacted with the rubber air bag to extrude the push rod, so that the push rod is subjected to certain resistance when moving downwards in the needle cylinder, the situation that the hyaluronic acid injected into a human body is high in content due to the fact that a doctor uses a large pushing force when hyaluronic acid is injected is effectively avoided, and further certain damage is caused to the human body, the problem that the doctor pushes the push plate due to fine shaking of the hand when hyaluronic acid is injected into the human body is effectively reduced, and the injection quantity is too much or too little is effectively solved, the physical and mental health of a cosmetology person is effectively protected, and the practicality of the hyaluronic acid injection needle is improved.
3. According to the hyaluronic acid injection needle, after the thin film and the rubber bag are pierced at the tip end of the clamping block, the glue can be collected by the collecting groove through the thin film and the collecting groove, the glue is prevented from flowing out to the outside through the needle tube, meanwhile, the elastic sheet is fixedly connected with the inner wall of the circular groove in the horizontal direction under the action of the glue, the piston is fixed with the bottom surface of the needle tube through the elastic sheet, the support and the second circular ring, the locking fixation of the piston is further realized, and the recycling of the hyaluronic acid injection needle by an illegal person is prevented, so that the physical and mental health of a cosmetology person is damaged.
Drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is a front view of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
FIG. 3 is an enlarged view of a portion of FIG. 1 at B;
FIG. 4 is an enlarged view of a portion of FIG. 1 at C;
in the figure: the needle comprises a needle cylinder 1, a push rod 2, a needle seat 3, a needle head 4, a piston 5, a push plate 6, a first circular ring 7, a sliding groove 8, a spring 9, a sliding block 11, a circular groove 12, a groove 13, an elastic metal sheet 14, a rubber air bag 15, a circular groove 16, a second circular ring 17, a bracket 18, a spring piece 19, a clamping block 21, a rubber bag 22, a film 23 and a collecting groove 24.
Detailed Description
The invention is further described in connection with the following detailed description in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
As shown in fig. 1 to 4, the hyaluronic acid injection needle of the invention comprises a needle cylinder 1, a push rod 2, a needle seat 3, a needle head 4 and a piston 5; the push rod 2 is fixedly connected with a push plate 6; the lower end of the push rod 2 is fixedly connected with a piston 5; the piston 5 is connected inside the needle cylinder 1 in a sliding way; the needle seat 3 is detachably connected below the needle cylinder 1; the needle head 4 is fixedly connected inside the needle seat 3; a first circular ring 7 is fixedly connected above the inside of the needle cylinder 1; the diameter of the inner ring of the first circular ring 7 is larger than that of the push rod 2; a plurality of sliding grooves 8 are uniformly formed in the surface of the inner ring of the first circular ring 7; the surface of one side, far away from the push rod 2, of the chute 8 is fixedly connected with a spring 9; the other end of the spring 9 is fixedly connected with a sliding block 11; the sliding block 11 is connected inside the sliding groove 8 in a sliding way, and the sliding block 11 is designed in a hemispherical shape at one end close to the push rod 2; a ring groove 12 is formed above the push rod 2; a plurality of grooves 13 are uniformly formed below the inner part of the needle cylinder 1; the upper surface inside the groove 13 is fixedly connected with an elastic metal sheet 14;
when the device is in operation, in an initial state, the push plate 6 is close to the upper end of the needle cylinder 1, the sliding block 11 contacts the surface of the push rod 2 at one end close to the push rod 2, the sliding block 11 contacts the annular groove 12 at one end close to the push rod 2, the sliding block 11 is not inserted into the annular groove 12 at the moment, the lower surface of the piston 5 contacts the bottom surface of the inner ring of the needle cylinder 1, the thickness of the piston 5 is larger than the distance between the lower surface of the bottom of the groove 13 and the bottom surface of the inner ring of the needle cylinder 1, the lower end of the elastic metal sheet 14 is extruded on the surface of the periphery of the piston 5, and the elastic metal sheet 14 completely enters the groove 13;
before the injection of hyaluronic acid to a cosmetology person, the needle seat 3 is arranged below the needle cylinder 1 (the connection relation between the needle seat 3 and the needle head 4 is the prior art), at the moment, a needle sleeve (not shown in the drawing of the invention) sleeved outside the needle head 4 is taken off to extract hyaluronic acid, in the process, the lower end of the elastic metal sheet 14 is arc-shaped, so that the piston 5 can smoothly move towards the upper part inside the needle cylinder 1, the lower end of the elastic metal sheet 14 does not scratch the circumferential surface of the piston 5, when the lower surface of the piston 5 is arranged above the groove 13, the lower end of the elastic metal sheet 14 moves towards the central axis direction of the needle cylinder 1, the lower end of the elastic metal sheet 14 protrudes out of the groove 13, the sliding block 11 always contacts the outer surface of the push rod 2 at one end close to the push rod 2, and the first circular ring 7 limits the piston 5, so that the piston 5 is prevented from being pulled out of the needle cylinder 1 along with the push rod 2; when a cosmetology person needs to be injected with hyaluronic acid, the needle head 4 is penetrated into a human body, and the needle head 4 is a blunt needle, so that the needle head 4 is injected into a part only with one hole, and then is injected up and down and left and right, thereby reducing wounds and silting, then, a finger presses the push plate 6, the push plate 6 drives the push rod 2 to enable the piston 5 to move towards the lower part of the inner part of the needle cylinder 1, at the moment, under the action of the spring 9, one end of the slide block 11, which is close to the push rod 2, always contacts with the surface of the push rod 2, so that the resistance when the push rod 2 drives the piston 5 to move towards the lower part of the inner part of the needle cylinder 1 is increased, and further, excessive hyaluronic acid injected into the human body due to excessive force of a doctor is avoided, so that the hyaluronic acid extrudes blood vessels at the needle head 4, and certain injury is caused to the human body; when the lower part of the piston 5 contacts with the elastic metal sheet 14 and is close to the surface of one side of the push rod 2, the piston 5 extrudes the elastic metal sheet 14, so that the elastic metal sheet 14 moves towards the inside of the groove 13, and the thickness of the piston 5 is larger than the height of the groove 13 in the vertical direction, so that when the elastic metal sheet 14 completely enters the inside of the groove 13, the upper surface of the piston 5 is higher than the lower surface of the groove 13 in the vertical direction, and further, the waste of hyaluronic acid in the cylinder 1 and below the piston 5 caused by the fact that the thickness of the piston 5 is smaller than the height of the groove 13 in the vertical direction is effectively avoided, and hyaluronic acid flows into the upper part of the piston 5 through the groove 13 is effectively reduced; after the injection of the hyaluronic acid to the human body is completed, the needle is pulled out, the device is restored to an initial state, afterwards, the piston 5 is made of rubber material, so that the piston 5 has certain elasticity, the push plate 6 is pressed by force at the moment, the push plate 6 presses the push rod 2, the push rod 2 presses the piston 5, at the moment, the piston 5 is pressed, the piston 5 is deformed, the upper surface of the piston 5 is lower than the lower surface of the groove 13 in the vertical direction, the position limitation of the elastic metal sheets 14 is relieved, the lower ends of the elastic metal sheets 14 move towards the direction close to the central axis of the needle cylinder 1, the lower ends of the elastic metal sheets 14 reach the upper surface of the piston 5, after the device is restored, the sliding blocks 11 are pressed towards the lower part in the needle cylinder 1 by external force, at the moment, the inner part of the sliding groove 8 moves towards the direction close to the push rod 2 under the action of the spring 9, one end of the sliding block 11 is in the annular groove 12, and therefore the upper surface of the push rod 2 is limited and blocked, at the same time, the upper surface of the piston 5 is contacted with the lower surface of the elastic metal sheets 14, the upper surface of the elastic metal sheets 14 is fixedly connected with the upper surface of the inner surface of the groove 13, at the moment, the lower end of the elastic metal sheets 14 is easy to move towards the upper surface of the groove 14, the upper surface of the sliding block 14 is easy to be infected with the upper surface of the sliding block 5, and the upper surface of the sliding block 5 is prevented from being infected by the sliding block 2, and the upper surface of the sliding block 2 is prevented from being infected by the sliding block, and the sliding block 2 is effectively, the upper side of the sliding block 2 is in the upper side, and the upper side of the sliding face of the sliding needle is in the upper side, and the upper side of the sealing device is can be completely, and the upper side is can be completely infected, and the side; and this device can reuse when doctor uses, only need to accomplish the hyaluronic acid injection after pressing hard push pedal 6 to the cosmetology person and can realize the self-destruction to this device to the hyaluronic acid injection needle that has self-destruction function can only single injection's problem when using is avoided, and then improves this device's practicality, improves the result of use of device.
As an embodiment of the present invention, a rubber air bag 15 is fixedly connected between the ring groove 12 and the piston 5 on the surface of the push rod 2;
in the initial state, the sliding block 11 contacts and presses the rubber air bag 15 near the lower part of the annular groove 12 at one end near the push rod 2;
when the hyaluronic acid is injected into a human body, the push plate 6 is pressed, the push plate 6 drives the push rod 2 to move towards the lower part in the needle cylinder 1, at the moment, the sliding block 11 contacts and extrudes the rubber air bag 15 at one end close to the push rod 2, and carbon dioxide gas is filled in the rubber air bag 15, so that the push rod 2 receives certain resistance when moving downwards in the needle cylinder 1, the situation that the hyaluronic acid is injected into the human body due to the fact that the doctor injects hyaluronic acid, the used thrust is large, the hyaluronic acid is high in content, and the human body is damaged, so that the problem that the doctor pushes the push plate 6 due to slight shaking of hands when injecting hyaluronic acid into the human body is effectively reduced, the problem that the injection quantity is too much or too little is effectively solved, the physical and mental health of a cosmetology person is effectively protected, and the practical performance of the device is improved.
As an embodiment of the invention, an annular groove 16 is formed in the piston 5 by taking the central axis of the needle cylinder 1 as the center; the cross section of the annular groove 16 is convex; the part of the annular groove 16 in the vertical direction penetrates through the lower surface of the piston 5; the bottom surface of the inner ring of the needle cylinder 1 is fixedly connected with a second circular ring 17; the central axis of the second circular ring 17 coincides with the central axis of the needle cylinder 1; the upper surface of the second circular ring 17 is fixedly connected with a spring piece 19 through a bracket 18; the elastic sheet 19 is annular, and the cross section of the elastic sheet 19 is arc-shaped;
when the elastic piece 19 works, the width of the cross section of the elastic piece 19 in the horizontal direction is larger than the width of the cross section of the annular groove 16 in the vertical direction, and the width of the cross section of the elastic piece 19 in the horizontal direction is smaller than the width of the cross section of the annular groove 16 in the horizontal direction;
when the hyaluronic acid injection needle needs to be destroyed, because the width of the cross section of the elastic piece 19 in the horizontal direction is smaller than the width of the cross section of the annular groove 16 in the horizontal direction, and the elastic piece 19 has certain elasticity, when the lower surface of the piston 5 contacts the elastic piece 19, the elastic piece 19 is extruded by the inner wall of the annular groove 12 in the vertical direction to shrink along with the piston 5 due to the corresponding design of the annular elastic piece 19 and the circular notch of the annular groove 12 in the vertical direction, the elastic piece 19 enters the inner space of the annular groove 12 in the horizontal direction, and because the width of the cross section of the elastic piece 19 in the horizontal direction is larger than the width of the cross section of the annular groove 16 in the vertical direction, the elastic piece 19 is reset, the lower end of the elastic piece 19 contacts the lower surface of the annular groove 12 in the horizontal direction, and at the moment, the elastic piece 19 is limited and is blocked to the piston 5, so that the hyaluronic acid cannot be extracted again through the piston 5 after the device is self-destroyed, and the use safety of a cosmetologist is improved.
As an embodiment of the present invention, the upper surface of the elastic sheet 19 is uniformly and fixedly connected with a plurality of clamping blocks 21; the tip end of the upper end of the clamping block 21 is designed; the upper surface of the annular groove 16 in the horizontal direction is fixedly connected with a rubber bag 22; the rubber bag 22 is filled with glue;
when the injection device works, when the tip end of the clamping block 21 is still a certain distance from the rubber capsule 22 after the injection is finished, the clamping block 21 does not contact with the rubber capsule 22, then when the injection needle is destroyed, a doctor is required to pull the injection needle out of a cosmetology person, then the push plate 6 is pressed hard, in the process, the elastic sheet 19 enters into the inner space of the annular groove 12 in the horizontal direction, the tip end of the clamping block 21 fixedly connected with the upper surface of the elastic sheet 19 punctures the rubber capsule 22, so that glue in the rubber capsule 22 flows out, the elastic sheet 19 is fixedly connected with the inner wall of the annular groove 16 in the horizontal direction under the action of the glue, the piston 5 is further fixed with the bottom surface of the needle cylinder 1 through the elastic sheet 19, the bracket 18 and the second circular ring 17, and further the locking and fixing of the piston 5 are realized, and the recycling of the hyaluronic acid injection needle is prevented from being caused to the physical and mental health of the cosmetology person.
As an embodiment of the present invention, the surfaces of the two sides above the annular groove 16 in the horizontal direction are fixedly connected with films 23; the film 23 is positioned between the rubber capsule 22 and the upper surface of the annular groove 16 in the horizontal direction; the lower surface of the annular groove 16 in the horizontal direction is provided with a collecting groove 24; the number of the collecting grooves 24 is two, and the collecting grooves are respectively positioned at two sides of the annular groove 16 in the vertical direction;
when the injection device is in operation, after the injection is finished, the tip end part of the clamping block 21 is still at a certain distance from the film 23, and then the injection needle is destroyed, a doctor is required to pull the injection needle out of a cosmetology person, then the push plate 6 is pressed by force, in the process, the elastic sheet 19 enters the annular groove 16 and the inner space in the horizontal direction, the lower ends of the two sides of the elastic sheet 19 are contacted with the inner wall of the collecting groove 24 in the vertical direction, then the piston 5 is extruded along with the push rod 2, so that the tip end part of the clamping block 21 pierces the film 23 and the rubber bag 22, glue flows out of the rubber bag 22, under the action of the film 23 and the annular elastic sheet 19, the elastic sheet 19 and the piston 5 are mutually fixed under the action of the glue, and therefore, the situation that the glue inside the rubber bag 22 pierces the rubber bag 22 flows into the outside through the needle 4 after the force of pushing the piston 5 by the doctor is excessive, other objects are bonded by the glue, and the film 23 can be effectively prevented from damaging the rubber bag 22 in the transportation process;
as an embodiment of the present invention, the lower end of the elastic metal sheet 14 is designed in a barb shape at the side close to the inner wall of the syringe 1;
when the injection needle is destroyed in operation, a doctor pulls the injection needle out of a cosmetology person, then presses the push plate 6 forcefully, so that the piston 5 is extruded, at the moment, the upper surface of the piston 5 is lower than the height of the upper surface and the lower surface of the groove 13 in the horizontal direction, so that the lower end of the elastic metal sheet 14 moves towards the central axis direction of the needle cylinder 1, the lower end of the elastic metal sheet 14 reaches the upper surface of the piston 5, at the moment, the elastic metal sheet 14 limits the piston 5, after that, when an outward force acts on the push rod 2, the push rod 2 drives the piston 5 to move towards the direction far away from the bottom of the needle cylinder 1, the peripheral surface of the piston 5 contacts with the lower end of the elastic metal sheet 14, and the lower end of the elastic metal sheet 14 is in barb-shaped design near one side of the inner wall of the needle cylinder 1, so that the lower end of the elastic metal sheet 14 scrapes the peripheral surface of the piston 5, damage to the piston 5 is realized, secondary use of the injection needle tube is avoided, physical and mental safety of the cosmetology person is ensured, and safety performance of the device is improved.
The specific implementation flow is as follows:
in the initial state, the push plate 6 is close to the upper end of the needle cylinder 1, the sliding block 11 contacts and extrudes a rubber air bag 15 close to the lower part of the annular groove 12 at the end close to the push rod 2, the sliding block 11 is close to the annular groove 12 at the end close to the push rod 2, the sliding block 11 is not inserted into the annular groove 12 at the moment, the lower surface of the piston 5 contacts the bottom surface of the inner ring of the needle cylinder 1, the thickness of the piston 5 is larger than the distance between the lower surface of the bottom of the groove 13 and the bottom surface of the inner ring of the needle cylinder 1, the surface of the periphery of the piston 5 extrudes the lower end of the elastic metal sheet 14, and the elastic metal sheet 14 completely enters the groove 13;
before the injection of hyaluronic acid to a cosmetology person, the needle seat 3 is arranged below the needle cylinder 1 (the connection relation between the needle seat 3 and the needle head 4 is the prior art), at the moment, a needle sleeve (not shown in the drawing of the invention) sleeved outside the needle head 4 is taken off to extract hyaluronic acid, in the process, the lower end of the elastic metal sheet 14 is arc-shaped, so that the piston 5 can smoothly move towards the upper part inside the needle cylinder 1, the lower end of the elastic metal sheet 14 does not scratch the circumferential surface of the piston 5, when the lower surface of the piston 5 is arranged above the groove 13, the lower end of the elastic metal sheet 14 moves towards the central axis direction of the needle cylinder 1, the lower end of the elastic metal sheet 14 protrudes out of the groove 13, the sliding block 11 always contacts the outer surface of the push rod 2 at one end close to the push rod 2, and the first circular ring 7 limits the piston 5, so that the piston 5 is prevented from being pulled out of the needle cylinder 1 along with the push rod 2; when a user needs to inject hyaluronic acid into a cosmetic, the needle 4 is penetrated into a human body, then a finger presses the push plate 6, the push plate 6 drives the push rod 2 to enable the piston 5 to move downwards towards the inside of the needle cylinder 1, and under the action of the spring 9, the sliding block 11 always contacts the surface of the push rod 2 at one end close to the push rod 2, so that the resistance when the push rod 2 drives the piston 5 to move downwards towards the inside of the needle cylinder 1 is increased, the piston 5 moves downwards towards the inside of the needle cylinder 1 along with the piston 5, and when the lower part of the piston 5 contacts the surface of one side close to the push rod 2, the piston 5 extrudes the elastic metal sheet 14, so that the elastic metal sheet 14 moves inwards towards the groove 13; when the tip end of the clamping block 21 is still at a certain distance from the rubber capsule 22 after injection is finished, the clamping block 21 does not contact the rubber capsule 22, then when the injection needle is destroyed, a doctor is required to pull the injection needle out of a cosmetology person, then the push plate 6 is pressed hard, the lower end of the elastic piece 19 is in contact with the lower surface of the elastic piece 19 because the width of the cross section of the elastic piece 19 in the horizontal direction is smaller than the width of the cross section of the annular groove 16 in the horizontal direction, the elastic piece 19 has certain elasticity, when the lower surface of the piston 5 contacts the elastic piece 19, the annular elastic piece 19 is correspondingly designed with the circular notch of the annular groove 12 in the vertical direction, the elastic piece 19 is extruded by the inner wall of the annular groove 12 in the vertical direction and contracted along with the continuous downward movement of the piston 5, the elastic piece 19 enters the inner space of the annular groove 12 in the horizontal direction, and the width of the cross section of the elastic piece 19 in the horizontal direction is larger than the width of the cross section of the annular groove 16 in the horizontal direction, so that the elastic piece 19 is reset, at the lower end of the elastic piece 19 contacts the lower surface of the annular groove 12 in the horizontal direction, at the moment, the upper surface of the elastic piece 19 is limited and dead against the piston 5, and the tip end of the clamping block 21 fixedly connected with the elastic piece 19 pierces the film 23 and the rubber capsule 22, the rubber capsule 22 flows out of the inner wall of the annular groove 12 and the annular groove 12, and the glue is further fixed with the annular groove 18, and the bottom of the annular groove 5, and the bottom of the piston 5 is fixed by the annular groove and the adhesive, and the bottom of the piston 5; then, when an outward force acts on the push rod 2 to enable the push rod 2 to drive the piston 5 to move towards the direction away from the bottom of the needle cylinder 1, the circumferential surface of the piston 5 contacts the lower end of the elastic metal sheet 14, and the lower end of the elastic metal sheet 14 is in barb-shaped design at one side close to the inner wall of the needle cylinder 1, so that the circumferential surface of the piston 5 is scraped by the lower end of the elastic metal sheet 14, and further the damage to the piston 5 is realized.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (1)
1. A hyaluronic acid injection needle, characterized in that: comprises a needle cylinder (1), a push rod (2), a needle seat (3), a needle head (4) and a piston (5); the push rod (2) is fixedly connected with a push plate (6) at the upper end; the lower end of the push rod (2) is fixedly connected with a piston (5); the piston (5) is connected inside the needle cylinder (1) in a sliding way; the needle seat (3) is detachably connected below the needle cylinder (1); the needle head (4) is fixedly connected to the inside of the needle seat (3); a first circular ring (7) is fixedly connected above the inside of the needle cylinder (1); the diameter of the inner ring of the first circular ring (7) is larger than that of the push rod (2); a plurality of sliding grooves (8) are uniformly formed in the surface of the inner ring of the first circular ring (7); the surface of one side, far away from the push rod (2), of the sliding groove (8) is fixedly connected with a spring (9); the other end of the spring (9) is fixedly connected with a sliding block (11); the sliding block (11) is connected inside the sliding groove (8) in a sliding way, and the sliding block (11) is designed in a hemispherical mode at one end close to the push rod (2); a ring groove (12) is formed above the push rod (2); a plurality of grooves (13) are uniformly formed below the inner part of the needle cylinder (1); the upper surface of the inside of the groove (13) is fixedly connected with an elastic metal sheet (14);
a rubber air bag (15) is fixedly connected between the ring groove (12) and the piston (5) on the surface of the push rod (2);
an annular groove (16) is formed in the piston (5) by taking the central axis of the needle cylinder (1) as the center; the cross section of the annular groove (16) is convex; the part of the annular groove (16) in the vertical direction penetrates through the lower surface of the piston (5); the bottom surface of the inner ring of the needle cylinder (1) is fixedly connected with a second circular ring (17); the central axis of the second circular ring (17) coincides with the central axis of the needle cylinder (1); the upper surface of the second circular ring (17) is fixedly connected with an elastic sheet (19) through a bracket (18); the elastic sheet (19) is annular, and the cross section of the elastic sheet (19) is arc-shaped;
the upper surface of the elastic sheet (19) is uniformly and fixedly connected with a plurality of clamping blocks (21); the tip end of the upper end of the clamping block (21) is designed; the upper surface of the annular groove (16) in the horizontal direction is fixedly connected with a rubber capsule (22); glue is filled in the rubber bag (22);
the surfaces of the two sides of the upper part of the annular groove (16) in the horizontal direction are fixedly connected with films (23); the film (23) is positioned between the rubber capsule (22) and the upper surface of the annular groove (16) in the horizontal direction; the lower surface of the annular groove (16) in the horizontal direction is provided with a collecting groove (24); the number of the collecting grooves (24) is two, and the collecting grooves are respectively positioned at two sides of the annular groove (16) in the vertical direction;
the lower end of the elastic metal sheet (14) is designed in a barb shape at one side close to the inner wall of the needle cylinder (1).
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| CN202111080222.5A CN113730726B (en) | 2021-09-15 | 2021-09-15 | Hyaluronic acid injection needle |
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| CN113730726B true CN113730726B (en) | 2023-09-15 |
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| CN113730726A (en) | 2021-12-03 |
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Inventor after: Jiao Lei Inventor after: Chen Minna Inventor after: Wu Leiming Inventor after: He Ying Inventor after: Wang Jing Inventor before: He Ying Inventor before: Wang Jing |
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Effective date of registration: 20231101 Address after: 200000 J, No. 912, Yecheng Road, Jiading Industrial Zone, Jiading District, Shanghai Patentee after: Shanghai Meimagnesium Shangyan Hospital Management Co.,Ltd. Address before: 233400 Room 302, unit 1, building 4, Shengquan new village, Liucheng Town, Huaiyuan County, Bengbu City, Anhui Province Patentee before: He Ying |