Botulinum toxin microinjection needle with multiple needle tips

Abstract

The utility model relates to the technical field of microinjection needles, in particular to a multi-needle-point botulinum toxin microinjection needle which comprises a needle base, a contraction frame is fixedly connected to the top of the needle base, a fixing needle is fixedly connected to the bottom of the inner wall of the contraction frame, sliding grooves are formed in the two sides of the inner wall of the contraction frame, and the needle base is fixedly connected with the fixing needle. The contraction frame is slidably connected with a lifting block through the sliding groove, and the lifting block is fixedly connected with a plurality of movable needle points. The novel botulinum toxin injection needle has the advantages that the lifting movable needle point is arranged above the needle base, when injection is not carried out, the movable needle point is completely contracted in the contraction frame, the movable needle point can be fully protected, damage caused by collision is avoided, when botulinum toxin injection is needed, the lifting block and the movable needle point are lifted, the movable needle point extends out of the needle hole, and therefore the botulinum toxin injection needle is convenient to use. And the length of the extended needle tip is controlled according to the injection depth, so that the diffusion is more uniform after the micro-injection needle is injected into muscular tissues, the treatment effect is improved, and the side effect is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of microinjection needles, in particular to a botulinum toxin microinjection needle with multiple needle tips. Background Art

[0002] Botulinum toxin, also known as botulinum toxin, is a neurotoxin containing high molecular weight protein produced by Clostridium botulinum during its reproduction and growth. Injecting botulinum toxin into the superficial skin can treat trigeminal neuralgia and postherpetic neuralgia; local muscle injection can treat blepharospasm, spasmodic torticollis, limb spasm after stroke, etc. At present, 1ml or 2ml syringes are routinely used for botulinum toxin injection. After single-tip injection, botulinum toxin diffuses unevenly, and the injection depth is easily deviated by hand feeling. Therefore, a multi-tip microinjection needle that can control the injection depth is needed to improve the precision injection effect.

[0003] A sealed needle shell and a multi-needle injection needle of a multi-needle injection needle are disclosed in Chinese patent CN202320568735.9. The sealed needle shell and the multi-needle injection needle plug of the multi-needle injection needle are tightly fitted on the upper end of the needle insertion cavity, so that the negative pressure cavity will be completely sealed by the plug, and the through hole itself will also be squeezed, so that the gap between the through hole and the needle tends to be sealed, so that the assembly cavity and the negative pressure cavity are completely sealed. However, the sealed needle shell and the needle length of the multi-needle injection needle are fixed, and the extended length of the needle cannot be adjusted according to injection needs. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a botulinum toxin microinjection needle with multiple needle tips, which effectively solves the shortcomings of the prior art.

[0005] The purpose of the utility model is achieved through the following technical solutions:

[0006] A botulinum toxin microinjection needle with multiple needle tips comprises a needle base, the top of the needle base is fixedly connected to a retractable frame, the bottom of the inner wall of the retractable frame is fixedly connected to a fixed needle, both sides of the inner wall of the retractable frame are provided with sliding grooves, the retractable frame is slidably connected to a lifting block through the sliding grooves, and a plurality of movable needle tips are fixedly connected to the lifting block.

[0007] Optionally, the number and position of the fixed needles correspond to the number and position of the movable needle tips, the inner diameter of the fixed needles matches the outer diameter of the movable needle tips, a plurality of pinholes are provided on the top of the shrinking frame, and the positions and shapes of the pinholes correspond to the positions and shapes of the movable needle tips.

[0008] The above technical solution is adopted: by arranging a movable needle tip that can be lifted above the needle base, when no injection is performed, the movable needle tip is completely retracted into the retractable frame, which can fully protect it and avoid damage caused by bumps. When botulinum toxin injection is required, the lifting block and the movable needle tip are raised, the movable needle tip extends out of the needle hole, and the length of the extended needle tip is controlled according to the injection depth requirement, so that the microinjection needle can control the needle tip length according to the injection requirement, and the provision of multiple needle tips can make the botulinum toxin diffuse more evenly after injection, thereby improving the treatment effect and reducing side effects.

[0009] Optionally, the fixed needle is communicated with a needle base, an internal thread is provided at the bottom of the needle base, and the needle base is threadably connected to the syringe via the internal thread.

[0010] Optionally, the lifting block is located in the middle of the movable needle tip, and the sliding stroke of the slide groove is adapted to the length of the fixed needle.

[0011] The above technical solution is adopted: by arranging a fixed needle slidably connected below the movable needle tip, the movable needle tip can be connected with the syringe through the fixed needle during the lifting process, and the length of the fixed needle is limited so that the movable needle tip can still be connected with the fixed needle when it rises to the top.

[0012] Optionally, a slot is provided on the front side of the shrinking frame, a regulating plate is fixedly connected to the front side of the lifting block, the regulating plate is located outside the shrinking frame, and a length scale is provided on one side of the slot.

[0013] The above-mentioned technical solution is adopted: one side of the top of the control plate is in the shape of a pointer, and the length scale position pointed to by the pointer of the control plate is the length of the extended active needle tip. By setting the control plate on the front side of the lifting block, the user can slide the control plate to control the length of the extended active needle tip, thereby selecting superficial injection or intramuscular injection, and can judge the length of the extended needle tip according to the corresponding length scale, making the control more accurate and convenient.

[0014] Optionally, the length of the slot is matched to the sliding stroke of the slide groove, and the friction force between the lifting block and the slide groove is greater than the resistance encountered by the movable needle tip when piercing the skin.

[0015] The above technical solution is adopted: by limiting the friction between the lifting block and the slide groove, the movable needle tip can be maintained at the adjusted length under the action of friction, and can also remain extended when piercing the skin for injection, avoiding the contraction of the movable needle tip when piercing the skin and affecting the injection position.

[0016] The utility model has the following advantages:

[0017] 1. The botulinum toxin microinjection needle with multiple needle tips is provided with a movable needle tip that can be lifted above the needle base. When no injection is performed, the movable needle tip is completely retracted in a retractable frame, which can fully protect it and avoid damage caused by bumps. When botulinum toxin injection is required, the lifting block and the movable needle tip are raised, the movable needle tip extends out of the needle hole, and the length of the extended needle tip is controlled according to the injection depth requirement, so that the microinjection needle can control the needle tip length according to the injection requirement, and the provision of multiple needle tips can make the diffusion of botulinum toxin more uniform, improve the treatment effect, and reduce side effects.

[0018] 2. The botulinum toxin microinjection needle with multiple needle tips is provided with a fixed needle that is slidably connected below the movable needle tip, so that the movable needle tip can maintain communication with the syringe through the fixed needle during the lifting process, and the length of the fixed needle is limited so that the movable needle tip can still maintain connection with the fixed needle when it rises to the top. By providing an adjustment plate on the front side of the lifting block, the user can slide the adjustment plate to control the length of the extended movable needle tip, thereby selecting superficial skin injection or deep muscle injection, and can judge the length of the extended needle tip according to the corresponding length scale, making the adjustment more accurate and convenient.

[0019] 3. The botulinum toxin microinjection needle with multiple needle tips limits the friction between the lifting block and the slide groove, so that the movable needle tip can be kept at the adjusted length under the action of friction, and can also remain extended when piercing the skin for injection, thereby avoiding the shrinkage of the movable needle tip when piercing the skin and affecting the injection position. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the utility model;

[0021] Figure 2 For this utility model Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0022] Figure 3 It is a cross-sectional structural schematic diagram of the utility model;

[0023] Figure 4 For this utility model Figure 3 A schematic diagram of the enlarged structure at B in the middle;

[0024] Figure 5 It is a structural schematic diagram of the utility model in the injection state;

[0025] Figure 6 For this utility model Figure 5 Schematic diagram of the enlarged structure at C in the middle;

[0026] Figure 7 It is a cross-sectional structural schematic diagram of the utility model in the injection state.

[0027] In the figure: 1-needle base, 2-retractable frame, 3-fixed needle, 4-slide slot, 5-lifting block, 6-movable needle tip, 7-needle hole, 8-internal thread, 9-slot, 10-regulating plate, 11-length scale. DETAILED DESCRIPTION

[0028] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0029] like Figures 1 to 7 As shown, a botulinum toxin microinjection needle with multiple needle tips includes a needle base 1, a retractable frame 2 is fixedly connected to the top of the needle base 1, a fixed needle 3 is fixedly connected to the bottom of the inner wall of the retractable frame 2, both sides of the inner wall of the retractable frame 2 are provided with sliding grooves 4, the retractable frame 2 is slidably connected to a lifting block 5 through the sliding grooves 4, and a plurality of movable needle tips 6 are fixedly connected to the lifting block 5.

[0030] Embodiment 1: The number and position of the fixed needles 3 correspond to the number and position of the movable needle tips 6, the inner diameter of the fixed needles 3 matches the outer diameter of the movable needle tips 6, a plurality of needle holes 7 are provided on the top of the retractable frame 2, and the position and shape of the needle holes 7 correspond to the position and shape of the needle tips of the movable needle tips 6. By arranging a movable needle tip 6 that can be lifted and lowered above the needle base 1, when no injection is performed, the movable needle tip 6 is completely retracted into the retractable frame 2, which can fully protect it from damage caused by bumps. When botulinum toxin injection is required, the lifting block 5 and the movable needle tip 6 are raised, the movable needle tip 6 extends out of the needle hole 7, and the length of the extended needle tip is controlled according to the injection depth requirement, so that the microinjection needle can control the needle tip length according to the injection requirement, and arranging multiple needle tips can make the botulinum toxin diffuse more evenly after injection.

[0031] Embodiment 2: The fixed needle 3 is communicated with the needle base 1 , and an internal thread 8 is provided at the bottom of the needle base 1 . The needle base 1 is threadably connected to the syringe via the internal thread 8 .

[0032] Embodiment 3: The lifting block 5 is located in the middle of the movable needle tip 6, and the sliding stroke of the slide groove 4 is adapted to the length of the fixed needle 3. By arranging a sliding connection with the fixed needle 3 below the movable needle tip 6, the movable needle tip 6 can maintain communication with the syringe through the fixed needle 3 during the lifting process, and the length of the fixed needle 3 is limited so that the movable needle tip 6 can still maintain connection with the fixed needle 3 when it rises to the top.

[0033] Embodiment 4: A slot 9 is provided on the front side of the retracting frame 2, and a regulating plate 10 is fixedly connected to the front side of the lifting block 5. The regulating plate 10 is located on the outside of the retracting frame 2, and a length scale 11 is provided on one side of the slot 9. One side of the top of the regulating plate 10 is in the shape of a pointer, and the position of the length scale 11 pointed to by the pointer of the regulating plate 10 is the length of the extended active needle tip 6. By arranging the regulating plate 10 on the front side of the lifting block 5, the user can slide the regulating plate 10 to control the length of the extended active needle tip 6, thereby selecting superficial injection or intramuscular injection, and can judge the length of the extended needle tip according to the corresponding length scale 11, so that the regulation is more accurate and convenient.

[0034] Embodiment 5: The length of the slot 9 is matched with the sliding stroke of the slide groove 4, and the friction force between the lifting block 5 and the slide groove 4 is greater than the resistance encountered by the movable needle tip 6 when penetrating the skin. By limiting the friction force between the lifting block 5 and the slide groove 4, the movable needle tip 6 can be maintained at the adjusted length under the action of the friction force, and can also remain in the extended state when penetrating the skin for injection, thereby avoiding the contraction of the movable needle tip 6 when penetrating the skin and affecting the injection position.

[0035] The working principle of the utility model is as follows:

[0036] S1. When no injection is performed, the movable needle tip 6 is completely retracted into the retractable frame 2 to fully protect it from damage caused by bumps;

[0037] S2. When botulinum toxin injection is required, the lifting block 5 and the movable needle tip 6 are raised, the movable needle tip 6 extends out of the needle hole 7, and the length of the extended needle tip is controlled according to the injection depth requirement, so that the microinjection needle can control the needle tip length according to the injection requirement.

[0038] Compared with the prior art, the present invention has the following beneficial effects:

[0039] 1. The botulinum toxin microinjection needle with multiple needle tips is provided with a movable needle tip 6 that can be lifted and lowered above the needle base 1. When no injection is performed, the movable needle tip 6 is completely retracted into the retractable frame 2, which can fully protect it and avoid damage caused by collision. When the botulinum toxin needs to be injected, the lifting block 5 and the movable needle tip 6 are raised, and the movable needle tip 6 extends out of the needle hole 7. The length of the extended needle tip is controlled according to the injection depth requirement, so that the microinjection needle can control the needle tip length according to the injection requirement, and the provision of multiple needle tips can make the botulinum toxin diffuse more evenly after injection, thereby improving the treatment effect and reducing side effects.

[0040] 2. The botulinum toxin microinjection needle with multiple needle tips is provided with a slidably connected fixed needle 3 below the movable needle tip 6, so that the movable needle tip 6 can maintain communication with the syringe through the fixed needle 3 during the lifting process, and the length of the fixed needle 3 is limited so that the movable needle tip 6 can still maintain connection with the fixed needle 3 when it rises to the top. By providing an adjustment plate 10 on the front side of the lifting block 5, the user can slide the adjustment plate 10 to control the length of the extended movable needle tip 6, thereby selecting superficial injection or intramuscular injection, and can judge the length of the extended needle tip according to the corresponding length scale 11, making the adjustment more accurate and convenient.

[0041] 3. The botulinum toxin microinjection needle with multiple needle tips limits the friction between the lifting block 5 and the slide groove 4, so that the movable needle tip 6 can be maintained at the adjusted length under the action of the friction force, and can also remain in an extended state when piercing the skin for injection, thereby avoiding the shrinkage of the movable needle tip 6 when piercing the skin to affect the injection position.

[0042] The embodiments described above are merely descriptions of preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A botulinum toxin microinjection needle with multiple needle tips, characterized in that: The needle base (1) comprises a needle base, the top of which is fixedly connected to a retractable frame (2), the bottom of the inner wall of the retractable frame (2) is fixedly connected to a fixed needle (3), both sides of the inner wall of the retractable frame (2) are provided with sliding grooves (4), the retractable frame (2) is slidably connected to a lifting block (5) via the sliding grooves (4), and a plurality of movable needle tips (6) are fixedly connected to the lifting block (5).

2. The botulinum toxin microinjection needle with multiple needle tips according to claim 1, characterized in that: The number and position of the fixed needles (3) correspond to the number and position of the movable needle tips (6); the inner diameter of the fixed needles (3) matches the outer diameter of the movable needle tips (6); a plurality of needle holes (7) are provided on the top of the shrinking frame (2); the position and shape of the needle holes (7) correspond to the position and shape of the needle tips of the movable needle tips (6).

3. The botulinum toxin microinjection needle with multiple needle tips according to claim 2, characterized in that: The fixed needle (3) is connected to the needle base (1), and an internal thread (8) is provided at the bottom of the needle base (1). The needle base (1) is threadably connected to the syringe via the internal thread (8).

4. The botulinum toxin microinjection needle with multiple needle tips according to claim 3, characterized in that: The lifting block (5) is located in the middle of the movable needle tip (6), and the sliding stroke of the sliding groove (4) is adapted to the length of the fixed needle (3).

5. The botulinum toxin microinjection needle with multiple needle tips according to claim 4, characterized in that: The front side of the retractable frame (2) is provided with a slot (9), the front side of the lifting block (5) is fixedly connected with a regulating plate (10), the regulating plate (10) is located outside the retractable frame (2), one side of the slot (9) is provided with a length scale (11), one side of the top of the regulating plate (10) is in the shape of a pointer, and the position of the length scale (11) pointed to by the pointer of the regulating plate (10) is the length of the extended movable needle tip (6).

6. The botulinum toxin microinjection needle with multiple needle tips according to claim 5, characterized in that: The length of the slot (9) is matched to the sliding stroke of the slide groove (4), and the friction force between the lifting block (5) and the slide groove (4) is greater than the resistance encountered by the movable needle tip (6) when piercing the skin.

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