Metotoxin injection needle

Abstract

The utility model discloses a carnotoxin injection needle which comprises a needle cylinder, an injection mechanism and an adjusting mechanism, and a needle head structure is installed at one end of the needle cylinder. The injection mechanism comprises a driving assembly and a medicine pushing assembly, the medicine pushing assembly comprises a piston rod, a handle and a piston are arranged at the two ends of the piston rod respectively, the piston rod is slidably inserted into the other end of the needle cylinder and located in the needle cylinder, and the driving assembly is used for driving the piston rod to slide; the adjusting mechanism is used for adjusting the stroke of the driving assembly driving the piston rod to slide once. The amount needing to be injected is adjusted through the adjusting mechanism, then the mycotoxin in the needle cylinder is injected into a human body through the needle head structure through the injection mechanism, quantitative injection of the mycotoxin is achieved, the dosage of single injection can be adjusted and limited, and it is guaranteed that the injection amount of the mycotoxin at each position is consistent.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a botulinum toxin injection needle. Background Art

[0002] The main ingredient of the face-slimming injection is botulinum toxin, a neurotoxin. Its working principle is that after being injected into the masseter muscle, it acts on the peripheral motor nerve endings and neuromuscular junctions, inhibiting the release of neurotransmitters from the presynaptic membrane, blocking the release of acetylcholine, reducing muscle tension, and causing muscle disability and atrophy, thereby relaxing and atrophying the masseter muscle, reducing masseter muscle activity, and shrinking and shrinking, thereby achieving the purpose of face slimming.

[0003] Each time a botulinum toxin injection is performed, an injection needle needs to inject a specified amount of botulinum toxin at multiple locations. However, it is difficult for the operator to control the injection volume at each location, resulting in inconsistent botulinum toxin injection volumes at each location, which can easily lead to poor treatment effects. In addition, due to the operator's level, the speed at which the needle penetrates the patient's skin is difficult to control, which can easily increase the patient's pain.

[0004] Based on this, the utility model designs a botulinum toxin injection needle to solve the above problems. Utility Model Content

[0005] In view of the above-mentioned shortcomings of the prior art, the utility model provides a botulinum toxin injection needle.

[0006] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] A botulinum toxin injection needle, comprising:

[0008] A syringe, one end of which is equipped with a needle structure;

[0009] The injection mechanism comprises a driving assembly and a medicine pushing assembly, wherein the medicine pushing assembly comprises a piston rod, and a handle and a piston are respectively arranged at both ends of the piston rod, the piston rod is slidably inserted in the other end of the syringe and the piston is located in the syringe, and the driving assembly is used to drive the piston rod to slide; and

[0010] The adjusting mechanism is used to adjust the sliding stroke of the piston rod driven by the driving assembly in a single operation.

[0011] Furthermore, the driving assembly includes a movable grip rod and a fixed grip rod, the fixed grip rod is installed on one side of the other end of the syringe, the movable grip rod is slidably connected to the fixed grip rod along a direction parallel to the moving direction of the piston rod, the movable grip rod is located on the side of the fixed grip rod away from the needle structure and an elastic ring body is installed between the movable grip rod and the fixed grip rod, the piston rod is arranged with oblique teeth inclined toward the side away from the syringe, one end of the movable grip rod is close to the piston rod and is provided with a fixed block, a pawl is rotatably connected to the fixed block, and a limiting column is also provided on the fixed block, the limiting column is located on the side of the pawl away from the needle mechanism and a spring is connected between the pawl so that the pawl can be against the oblique teeth of the piston rod.

[0012] Furthermore, the adjustment mechanism includes a scale ring, a connecting ring and a limit bar, one end of the connecting ring is installed on the other end of the syringe, the other end of the connecting ring is axially rotatably connected to the scale ring, the fixed grip rod is installed on one side of the connecting ring, a sliding groove parallel to the piston rod is opened in the connecting ring, the limit bar is slidably inserted in the sliding groove, and the end of the limit bar close to the movable grip rod passes out of the sliding groove, the limit bar is provided with an external thread, and the inner wall of the scale ring is provided with an internal thread meshing with the external thread.

[0013] Furthermore, an indicator mark is arranged on the outer side of the connecting ring.

[0014] Furthermore, a protective ring is provided on a side of the connecting ring away from the needle structure, and the protective ring surrounds the outer sides of the piston rod and the pawl.

[0015] Furthermore, the needle structure includes a protective sleeve, a hose, a sleeve, a connecting block and a needle, the protective sleeve is arranged at the end of the syringe, the connecting block is located in the protective sleeve and one side of the connecting block is connected to the needle through the needle holder, a sliding tube is arranged on the other side of the connecting block, a sleeve is slidingly sleeved on the outer side of the sliding tube, the sleeve is connected to the end of the syringe, the hose is located in the sliding tube and both ends of the sleeve are respectively connected to the syringe and the needle, a pop-up spring is connected between the connecting block and the end of the syringe to provide an elastic force to move the connecting block away from the end of the syringe, a reset pull rope is arranged on the connecting block, the other end of the reset pull rope slides through the outside of the protective sleeve and is connected to the movable grip rod, and in the initial state, the movable grip rod is away from the fixed grip rod to tighten the reset pull rope to pull the connecting block close to the syringe and compress the pop-up spring.

[0016] The utility model has the following technical effects:

[0017] The amount to be injected is adjusted by the adjustment mechanism, and then the botulinum toxin in the syringe is injected into the human body through the needle structure by the injection mechanism, so as to achieve quantitative injection of the botulinum toxin. The dose of a single injection can be adjusted and limited to ensure that the amount of botulinum toxin injected at each position is consistent.

[0018] Pressing the movable grip can loosen the reset rope, so that the connecting block pops out instantly under the elastic action of the pop-up spring, and the connecting block drives the needle to quickly penetrate the skin. At this time, the movable grip drives the piston rod to inject the bacterial toxin in the syringe into the human body. After completing an injection, the movable grip is released, and the movable grip is reset under the elastic action of the elastic ring body, thereby driving the reset rope to tighten again. The reset rope pulls the connecting block to compress the pop-up spring and reset it for the next injection, so that the needle can be quickly ejected during each injection, so that it can quickly penetrate the skin and reduce pain. The needle can retract after injection in one position so that it can be ejected next time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 A three-dimensional view of a botulinum toxin injection needle of the utility model Figure 1 ;

[0021] Figure 2 It is a front view of a botulinum toxin injection needle of the utility model;

[0022] Figure 3 It is a top view of a botulinum toxin injection needle of the utility model;

[0023] Figure 4 For along Figure 3 AA direction cross-sectional view;

[0024] Figure 5 for Figure 4 The enlarged view of point B in the middle;

[0025] Figure 6 for Figure 4 Enlarged view of point C in the middle.

[0026] The numbers in the figure represent:

[0027] 1. Syringe; 2. Adjustment mechanism; 21. Scale ring; 22. Connecting ring; 23. Indicator; 24. Internal thread; 25. Slide groove; 26. Limit strip; 27. External thread; 3. Injection mechanism; 31. Drive assembly; 311. Moving grip rod; 312. Fixed grip rod; 313. Elastic ring; 314. Fixed block; 315. Limit column; 316. Ratchet; 317. Protective ring; 32. Medicine pushing assembly; 321. Piston rod; 322. Handle; 323. Piston; 4. Needle structure; 41. Protective sleeve; 42. Hose; 43. Sleeve; 44. Slide tube; 45. Pop-up spring; 46. Connecting block; 47. Needle holder; 48. Needle; 49. Reset rope. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] The utility model is further described below in conjunction with embodiments.

[0030] The terms “left”, “right”, “front”, “back”, “up” and “down” mentioned in the following description are oriented in the viewing direction of the front view.

[0031] Please refer to the instruction manual Figure 1-6 , a botulinum toxin injection needle, comprising a syringe 1, an injection mechanism 3 and an adjustment mechanism 2.

[0032] A needle structure 4 is installed at one end of the syringe 1 .

[0033] The injection mechanism 3 includes a driving assembly 31 and a medicine pushing assembly 32. The medicine pushing assembly 32 includes a piston rod 321. The two ends of the piston rod 321 are respectively provided with a handle 322 and a piston 323. The piston rod 321 is slidably inserted in the other end of the syringe 1 and the piston 323 is located in the syringe 1. The driving assembly 31 is used to drive the piston rod 321 to slide.

[0034] Furthermore, the driving assembly 31 includes a movable grip rod 311 and a fixed grip rod 312, and the fixed grip rod 312 is installed on one side of the other end of the syringe 1. The movable grip rod 311 is slidably connected to the fixed grip rod 312 along a direction parallel to the moving direction of the piston rod 321. The movable grip rod 311 is located on the side of the fixed grip rod 312 away from the needle structure 4 and an elastic ring body 313 is installed between the movable grip rod 311 and the fixed grip rod 312. The piston rod 321 is arranged with oblique teeth inclined toward the side away from the syringe 1. One end of the movable grip rod 311 is close to the piston rod 321 and is provided with a fixed block 314, and a pawl 316 is rotatably connected to the fixed block 314. A limiting column 315 is also provided on the fixed block 314. The limiting column 315 is located on the side of the pawl 316 away from the needle mechanism 4 and a spring is connected between the pawl 316 so that the pawl 316 can be pressed against the oblique teeth of the piston rod 321.

[0035] The adjustment mechanism 2 is used to adjust the sliding stroke of the piston rod 321 driven by the driving assembly 31 once.

[0036] Furthermore, the adjustment mechanism 2 includes a scale ring 21, a connecting ring 22 and a limit bar 26. One end of the connecting ring 22 is installed on the other end of the syringe 1, and the other end of the connecting ring 22 is axially rotatably connected to the scale ring 21. The fixed grip 312 is installed on one side of the connecting ring 22. A slide groove 25 parallel to the piston rod 321 is opened in the connecting ring 22. The limit bar 26 is slidably inserted in the slide groove 25, and one end of the limit bar 26 close to the movable grip 311 passes through the outside of the slide groove 25. The limit bar 26 is provided with an external thread 27, and the inner wall of the scale ring 21 is provided with an internal thread 24 meshing with the external thread 27 for transmission.

[0037] Preferably, an indicator mark 23 is provided on the outer side of the connecting ring 22 to facilitate judging the moving distance of the limiting strip 26 .

[0038] Preferably, a protective ring 317 is provided on the side of the connecting ring 22 away from the needle structure 4. The protective ring 317 surrounds the piston rod 321 and the outer side of the pawl 316, which helps to prevent the pawl 316 from being damaged by collision.

[0039] The scale ring 21 is rotated according to the designated injection volume, so that the scale corresponding to the designated injection volume on the scale ring 21 is rotated to the same horizontal line as the indicator 23. The scale ring 21 drives the limit bar 26 to slide along the slide groove 25 under the joint action of the internal thread 24 and the external thread 27 to adjust the distance between the limit bar 26 and the movable grip 311, and limit the maximum distance that the movable grip 311 moves toward the fixed grip 312. During injection, the movable grip 311 is pressed and pushed close to the fixed grip 312, and the limit column 315 and the ratchet 316 are in contact. The ratchet 316 pushes the piston rod 321 toward the needle structure 4 through the oblique teeth on the piston rod 321, so that the botulinum toxin in the syringe 1 is injected through the needle structure 4, until the limit bar 26 contacts and abuts the movable grip 311 to complete a quantitative injection. After one injection is completed, the movable gripping rod 311 is released, and the movable gripping rod 311 is reset under the elastic action of the elastic ring body 313, thereby driving the pawl 316 to reset, and the pawl 316 will not push the piston rod 321 in the reverse direction when resetting, so as to facilitate the next injection.

[0040] The utility model adjusts the amount to be injected through the adjustment mechanism 2, and then injects the botulinum toxin in the syringe 1 into the human body through the needle structure 4 through the injection mechanism 3, thereby achieving quantitative injection of the botulinum toxin, and can adjust and limit the dosage of a single injection to ensure that the botulinum toxin injection amount at each position is consistent.

[0041] In one embodiment, the needle structure 4 includes a protective sleeve 41, a hose 42, a sleeve 43, a connecting block 46 and a needle 48. The protective sleeve 41 is arranged at the end of the syringe 1, the connecting block 46 is located in the protective sleeve 41 and one side of the connecting block 46 is connected to the needle 48 through the needle holder 47, a sliding tube 44 is arranged on the other side of the connecting block 46, a sleeve 43 is slidably sleeved on the outer side of the sliding tube 44, the sleeve 43 is connected to the end of the syringe 1, the hose 42 is located in the sliding tube 44 and its two ends are respectively connected to the syringe 1 and the needle 48, a pop-up spring 45 is connected between the connecting block 46 and the end of the syringe 1 to provide an elastic force to move the connecting block 46 away from the end of the syringe 1, a reset pull rope 49 is arranged on the connecting block 46, the other end of the reset pull rope 49 slides through the outside of the protective sleeve 41 and is connected to the movable grip 311, in the initial state, the movable grip 311 is away from the fixed grip 312 to tighten the reset pull rope 49 to pull the connecting block 46 close to the syringe 1 and compress the pop-up spring 45.

[0042] When in use, the protective sleeve 41 is attached to the skin at the location where injection is required, and the movable grip 311 is pressed to loosen the reset rope 49, so that the connecting block 46 is instantly popped outward under the elastic action of the pop-up spring 45, and the connecting block 46 drives the needle 48 to quickly penetrate the skin, and at this time, the movable grip 311 drives the piston rod 321 to inject the bacterial toxin in the syringe 1 into the human body. After completing one injection, the movable grip 311 is released, and the movable grip 311 is reset under the elastic action of the elastic ring body 313, thereby driving the reset rope 49 to be tightened again, and the reset rope 49 pulls the connecting block 46 to compress the pop-up spring 45 to reset it for the next injection, so that the needle 48 can be quickly popped out during each injection, so that it can quickly penetrate the skin to reduce pain, and the needle 48 can retract after injection at one position so that it can be popped out next time.

[0043] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A botulinum toxin injection needle, characterized in that: include: A syringe (1) having a needle structure (4) mounted on one end thereof; The injection mechanism (3) comprises a driving assembly (31) and a medicine pushing assembly (32), wherein the medicine pushing assembly (32) comprises a piston rod (321), and the two ends of the piston rod (321) are respectively provided with a handle (322) and a piston (323), the piston rod (321) is slidably inserted in the other end of the syringe (1) and the piston (323) is located in the syringe (1), and the driving assembly (31) is used to drive the piston rod (321) to slide; and The adjusting mechanism (2) is used to adjust the sliding stroke of the piston rod (321) driven by the driving component (31) once.

2. The botulinum toxin injection needle according to claim 1, characterized in that: The driving assembly (31) comprises a movable gripping rod (311) and a fixed gripping rod (312), wherein the fixed gripping rod (312) is mounted on one side of the other end of the syringe (1), and the movable gripping rod (311) is slidably connected to the fixed gripping rod (312) in a direction parallel to the moving direction of the piston rod (321), and the movable gripping rod (311) is located on a side of the fixed gripping rod (312) away from the needle structure (4) and an elastic ring body (313) is mounted between the movable gripping rod (311) and the fixed gripping rod (312), and the piston rod (321) is provided with a plurality of The movable gripping rod (311) has an end close to the piston rod (321) and is provided with a fixed block (314). A ratchet (316) is rotatably connected to the fixed block (314). A limiting column (315) is also provided on the fixed block (314). The limiting column (315) is located on a side of the ratchet (316) away from the needle mechanism (4) and a spring is connected between the ratchet (316) and the ratchet (316), so that the ratchet (316) can be pressed against the oblique teeth of the piston rod (321).

3. The botulinum toxin injection needle according to claim 2, characterized in that: The regulating mechanism (2) comprises a graduated ring (21), a connecting ring (22) and a limiting strip (26); one end of the connecting ring (22) is mounted on the other end of the syringe (1); the other end of the connecting ring (22) is axially rotatably connected to the graduated ring (21); the fixed gripping rod (312) is mounted on one side of the connecting ring (22); a sliding groove (25) parallel to the piston rod (321) is provided in the connecting ring (22); the limiting strip (26) is slidably inserted in the sliding groove (25); and one end of the limiting strip (26) close to the movable gripping rod (311) passes out of the sliding groove (25); an external thread (27) is provided on the limiting strip (26); and an internal thread (24) meshing with the external thread (27) is provided on the inner wall of the graduated ring (21).

4. The botulinum toxin injection needle according to claim 3, characterized in that: An indicator mark (23) is arranged on the outer side of the connecting ring (22).

5. The botulinum toxin injection needle according to claim 3, characterized in that: A protective ring (317) is provided on the side of the connecting ring (22) away from the needle structure (4), and the protective ring (317) surrounds the piston rod (321) and the outer side of the ratchet (316).

6. The botulinum toxin injection needle according to claim 2, characterized in that: The needle structure (4) comprises a protective sleeve (41), a hose (42), a sleeve (43), a connecting block (46) and a needle (48); the protective sleeve (41) is arranged at the end of the syringe (1); the connecting block (46) is located in the protective sleeve (41) and one side of the connecting block (46) is connected to the needle (48) via a needle holder (47); a sliding tube (44) is arranged on the other side of the connecting block (46); a sleeve (43) is slidingly sleeved on the outer side of the sliding tube (44); the sleeve (43) is connected to the end of the syringe (1); the hose (42) is located in the sliding tube (44) and its two ends are respectively connected to the needle (48); The barrel (1) and the needle (48) are connected, and a pop-up spring (45) is connected between the connecting block (46) and the end of the syringe (1) to provide an elastic force to keep the connecting block (46) away from the end of the syringe (1). A reset pull rope (49) is provided on the connecting block (46), and the other end of the reset pull rope (49) slides through the outside of the protective sleeve (41) and is connected to the movable grip (311). In the initial state, the movable grip (311) is away from the fixed grip (312) to tighten the reset pull rope (49) to pull the connecting block (46) close to the syringe (1) and compress the pop-up spring (45).

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