An anti-scratch meat skin rolling needle

Abstract

The present invention discloses an anti-scraping skin rolling needle, belonging to the technical field of medical devices. An anti-scraping skin rolling needle includes a handle and a roller assembly. The roller assembly is installed on the handle and is rotationally connected to the handle. The roller assembly is provided with multiple groups of rolling needle assemblies that can spontaneously generate a tendency to retract into the roller. A high-pressure chamber is provided inside the support shaft. The root of the rolling needle assembly passes through the support shaft wall and is connected to the high-pressure chamber. The rolling needle assembly is pushed by the high-pressure gas in the high-pressure chamber, and the tip protrudes from the surface of the roller. The high-pressure chamber is connected with a pressure relief structure, and the pressure relief structure protrudes from the surface of the support shaft. When the roller and the support shaft rotate relative to each other, the pressure relief structure can be damaged, and the rolling needle assembly retracts into the roller. It can effectively solve the safety hazards of existing skin rolling needles in clinical applications and provide a safer and more efficient treatment tool for medical beauty and skin treatment.

Description

Technical Field

[0001] The present invention relates to an anti-scratch skin rolling needle, belonging to the technical field of medical devices. Background Art

[0002] In the fields of medical aesthetics and skin treatment, the skin rolling needle, as a common treatment tool, is widely used in microneedle therapy. Its basic principle is to hold the handle and roll the roller with microneedles on the skin, so that the microneedles stimulate the skin by puncturing, thereby promoting the skin's self-repair and achieving effects such as improving skin quality, fading scars, and increasing the skin's absorption capacity. However, in the actual clinical application process, there is a problem that cannot be ignored with the skin rolling needle: when the axis of the roller gets stuck during the rolling process, the microneedles will generate a lateral translation force relative to the skin, and this force is extremely likely to cause the microneedles to scratch the skin, which not only brings pain and discomfort to the patient, but may also lead to serious consequences such as infection and scar hyperplasia.

[0003] Therefore, developing a new type of skin rolling needle that can automatically retract the microneedles into the roller when the roller gets stuck has become an urgent need in the industry. This new design can not only significantly improve the safety of treatment and reduce the harm suffered by patients due to improper operation, but also enhance the effect and reliability of medical aesthetics and skin treatment, which is of great significance for promoting the development of the entire industry. Against this background, this patent proposes a brand-new design scheme for the anti-scratch skin rolling needle, aiming to effectively solve the potential safety hazards of existing skin rolling needles in clinical applications through technological innovation and provide a safer and more efficient treatment tool for medical aesthetics and skin treatment. Summary of the Invention

[0004] The technical problem to be solved by the present invention is: to overcome the deficiencies of the prior art and provide an anti-scratch skin rolling needle, which can effectively solve the potential safety hazards of existing skin rolling needles in clinical applications and provide a safer and more efficient treatment tool for medical aesthetics and skin treatment.

[0005] The technical solution adopted by the present invention to solve the problems it faces is:

[0006] An anti-scratch skin rolling needle includes a handle and a roller assembly. The roller assembly is installed on the handle and is rotationally connected to the handle. The roller assembly is provided with multiple groups of needle assemblies. The roller assembly includes a roller and a support shaft, and the roller and the support shaft rotate integrally. The roller is provided with several radially penetrating mounting holes, and the needle assemblies are slidably arranged in the mounting holes and can spontaneously generate a tendency to retract into the roller;

[0007] A high-pressure chamber is provided inside the support shaft. The root of the needle assembly passes through the support shaft wall and is connected to the high-pressure chamber. The needle assembly is pushed by the high-pressure gas in the high-pressure chamber, and the tip protrudes from the surface of the roller;

[0008] The high-pressure chamber is connected with a pressure relief structure, and the pressure relief structure protrudes from the surface of the support shaft. When the roller and the support shaft rotate relative to each other, the pressure relief structure can be damaged, and the needle roller assembly retracts into the roller.

[0009] Preferably, the roller is sleeved on the support shaft, the support shaft is a hollow shaft, a core shaft is installed inside the support shaft, the high-pressure chamber is arranged inside the core shaft, the mounting hole on the roller is a first stepped hole, the support shaft is provided with a plurality of transition through holes, and the core shaft is provided with a plurality of second stepped holes. The first stepped hole, the second stepped hole and the transition through holes are arranged in alignment.

[0010] Preferably, the needle roller assembly includes micro needles, a spring fixing plate is fixedly installed on the micro needles, a return spring sleeved on the micro needles is installed on the spring fixing plate, one end of the return spring is fixed on the spring fixing plate, and the other end abuts against the stepped end face of the first stepped hole;

[0011] The micro needles penetrate through the first stepped hole, the second stepped hole and the transition through holes. The diameter of the transition through hole is larger than the diameter of the micro needles. A limiting platform is arranged at the root of the micro needles, and the limiting platform abuts against the stepped end face of the second stepped hole.

[0012] Preferably, the pressure relief structure is a cylinder with one end closed and the other end provided with an opening. The closed end of the pressure relief structure protrudes from the surface of the support shaft and is located inside the roller of the roller, and the opening end of the pressure relief structure is communicated with the high-pressure chamber.

[0013] Preferably, a quick-connect joint for unidirectional ventilation into the high-pressure chamber is arranged at one end of the core shaft.

[0014] Preferably, the handle includes a handle portion and a bracket, and the handle portion is fixedly connected with the bracket;

[0015] The bracket is mirror-mounted with metallurgical sleeves, the metallurgical sleeves are in rolling connection with the support shaft, and limiting nuts are respectively installed at both ends of the support shaft.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] The present invention is ingeniously designed. The designs of the pressure relief structure, the high-pressure chamber and the needle roller assembly enable the micro needles to be automatically retracted into the roller when the roller is stuck. It can not only significantly improve the safety of treatment, reduce the harm suffered by patients due to improper operation, but also improve the effect and reliability of medical beauty and skin treatment. Description of the Drawings

[0018] Figure 1 It is a structural diagram of a skin roller for preventing flesh scraping according to the present invention;

[0019] Figure 2 It is a full sectional view of a skin roller for preventing flesh scraping according to the present invention;

[0020] Figure 3 It is a partial enlarged view of part A in the full cross-sectional view of a skin-needle for preventing flesh scratching according to the present invention;

[0021] Figure 4 It is the full cross-sectional view of the roller of a skin-needle for preventing flesh scratching according to the present invention;

[0022] Figure 5 It is the structural diagram of the support shaft of a skin-needle for preventing flesh scratching according to the present invention;

[0023] Figure 6 It is the full cross-sectional view of the mandrel of a skin-needle for preventing flesh scratching according to the present invention;

[0024] Figure 7 It is the structural diagram of the needle assembly of a skin-needle for preventing flesh scratching according to the present invention.

[0025] In the figure:

[0026] 1. Handle, 101. Shank part, 102. Bracket, 2. Roller assembly, 201. Roller, 2012. Installation groove, 2013. Exhaust hole, 2014. First stepped hole, 202. Support shaft, 2022. Transition through hole, 2023. First through groove, 203. Mandrel, 2031. High-pressure chamber, 2032. Second through groove, 2033. Second stepped hole, 204. Quick-connect joint, 205. Needle assembly, 2051. Microneedle, 2052. Return spring, 2053. Spring fixing plate, 2054. Limiting platform, 206. Pressure relief structure, 3. Metallurgical sleeve, 4. Limiting nut. Detailed implementation manners

[0027] This specification and the claims do not use the difference in names as a way to distinguish components, but use the difference in functions of components as the criterion for distinction. In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "horizontal", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In the present invention, unless otherwise clearly defined and limited, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0028] Such as Figures 1-7A scratch-proof skin rolling needle as shown, comprising a handle 1 and a roller assembly 2, and the roller assembly 2 is installed on the handle 1. The handle 1 includes a handle portion 101 and a bracket 102, and the handle portion 101 is fixedly connected to the bracket 102. A metallurgical sleeve 3 is mirror-mounted on the bracket 102. The roller assembly 2 includes a support shaft 202, and both ends of the support shaft 202 are respectively installed at both ends of the bracket 102 and are in rolling connection with the metallurgical sleeve 3. Limit nuts 4 are installed on the outer sides of both ends of the support shaft 202 and both ends of the bracket 102 for restricting the axial position of the handle 1 on the support shaft 202.

[0029] The roller assembly 2 is installed with multiple groups of needle assemblies 205. The roller assembly 2 includes a roller 201, and the roller 201 and the support shaft 202 rotate integrally. A number of radially penetrating mounting holes are provided on the roller 201, and the needle assemblies 205 are slidably arranged in the mounting holes and can spontaneously generate a tendency to retract into the roller 201.

[0030] A high-pressure chamber 2031 is provided inside the support shaft 202. The root of the needle assembly 205 passes through the wall of the support shaft 202 to connect to the high-pressure chamber 2031. The needle assembly 205 is pushed by the high-pressure gas inside the high-pressure chamber 2031, and the tip protrudes from the surface of the roller 201. The high-pressure chamber 2031 is connected with a pressure relief structure 206, and the pressure relief structure 206 protrudes from the surface of the support shaft 202. When the roller 201 and the support shaft 202 rotate relatively, the pressure relief structure 206 can be damaged, and the needle assembly 205 retracts into the roller 201.

[0031] The roller 201 is sleeved on the support shaft 202. The support shaft 202 is a hollow shaft, and a core shaft 203 is installed inside the support shaft 202. The high-pressure chamber 2031 is provided inside the core shaft 203. The mounting hole on the roller 201 is a first stepped hole 2014, the support shaft 202 is provided with a number of transition through holes 2022, and the core shaft 203 is provided with a number of second stepped holes 2033. The first stepped hole 2014, the second stepped hole 2033 and the transition through hole 2022 are all arranged in alignment.

[0032] The needle assembly 205 includes a micro-needle 2051. A spring fixing plate 2053 is fixedly installed on the micro-needle 2051. A return spring 2052 sleeved on the micro-needle 2051 is installed on the spring fixing plate 2053. The return spring 2052 and the spring fixing plate 2053 are located in the large hole of the first stepped hole 2014. The spring fixing plate 2053 is slidably connected to the large hole of the first stepped hole 2014. One end of the return spring 2052 is fixed on the spring fixing plate 2053, and the other end abuts against the stepped end face of the first stepped hole 2014.

[0033] The microneedle 2051 penetrates through the first stepped hole 2014, the second stepped hole 2033, and the transition through hole 2022. The diameter of the transition through hole 2022 is larger than that of the microneedle 2051. A limiting platform 2054 is provided at the root of the microneedle 2051 to limit the radial displacement of the microneedle 2051. Since the root of the microneedle 2051 communicates with the high-pressure chamber 2031, the high pressure in the high-pressure chamber 2031 pushes the microneedle 2051 to move outward, causing the limiting platform 2054 to abut against the stepped end face of the second stepped hole 2033.

[0034] The roller 201 is further provided with a mounting groove 2012. The support shaft 202 is provided with a first through groove 2023, and the core shaft 203 is provided with a second through groove 2032. The mounting groove 2012, the first through groove 2023, and the second through groove 2032 are arranged in alignment.

[0035] The pressure relief structure 206 is installed in the mounting groove 2012, the first through groove 2023, and the second through groove 2032. The pressure relief structure 206 is a cylinder with one end closed and the other end provided with an opening. The closed end of the pressure relief structure 206 protrudes from the first through groove 2023 of the support shaft 202 and is fixed in the mounting groove 2012 of the roller 201. The opening end of the pressure relief structure 206 communicates with the high-pressure chamber 2031. The pressure relief structure 206 limits the axial and circumferential relative positions of the roller 201, the support shaft 202, and the core shaft 203, enabling the roller 201, the support shaft 202, and the core shaft 203 to rotate integrally. The pressure relief structure 206 is made of polypropylene with a wall thickness of 0.1 mm. One end of the core shaft 203 is provided with a quick-insert joint 204 for unidirectional gas ventilation into the high-pressure chamber 2031.

[0036] In order to discharge the gas more quickly, increase the retraction speed of the microneedle 2051, and further reduce the harm, the roller 201 is provided with an exhaust hole 2013 at one end of the mounting groove 2012. The exhaust hole 2013 communicates with the mounting groove 2012, and the gas entering the pressure relief structure 206 will be quickly discharged through the exhaust hole 2013.

[0037] During application, hold the handle and roll the roller assembly 2 on the skin. The microneedle 2051 stimulates the skin through puncturing for treatment. The diameter of the transition through hole 2022 of the support shaft 202 is larger than that of the microneedle 2051. Once the roller assembly 2 gets stuck during rolling, relative movement will occur between the roller 201 and the support shaft 202, and they will no longer rotate synchronously. At this time, the pressure relief structure 206 is subjected to the shear force generated by the relative movement between the roller 201 and the support shaft 202, causing the pressure relief structure 206 to be damaged. At this time, the high-pressure gas in the high-pressure chamber 2031 is discharged through the pressure relief structure 206. There is no high-pressure gas in the high-pressure chamber 2031. Under the action of the return spring 2052, the microneedle 2051 is retracted into the roller 201. At this time, the microneedle 2051 will not harm the skin, playing a protective role for the skin.

[0038] Similarly, after the skin roller needle is normally used, in order to prevent the microneedles 2051 from scratching the skin, relative movement can also be generated manually between the roller 201 and the support shaft 202. Under the action of the same principle as above, the microneedles 2051 are retracted into the interior of the roller 201.

[0039] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the scope of knowledge possessed by those of ordinary skill in the art.

Claims

1. A flesh-protecting skin rolling needle, comprising a handle (1) and a roller assembly (2), wherein the roller assembly (2) is installed on the handle (1), the roller assembly (2) is rotationally connected to the handle (1), and the roller assembly (2) is provided with multiple groups of needle assemblies (205), characterized in that: The roller assembly (2) includes a roller (201) and a support shaft (202). The roller (201) and the support shaft (202) rotate integrally. A number of radially penetrating mounting holes are provided on the roller (201). The needle roller assembly (205) is slidably disposed in the mounting holes and has a tendency to spontaneously retract into the roller (201). A high-pressure chamber (2031) is provided inside the support shaft (202). The root of the needle roller assembly (205) passes through the wall of the support shaft (202) and is connected to the high-pressure chamber (2031). The needle roller assembly (205) is pushed by the high-pressure gas in the high-pressure chamber (2031), and its tip protrudes from the surface of the roller (201). The high-pressure chamber (2031) is connected to a pressure relief structure (206). The pressure relief structure (206) protrudes from the surface of the support shaft (202). When the roller (201) and the support shaft (202) rotate relative to each other, the pressure relief structure (206) can be damaged, and the needle roller assembly (205) retracts into the roller (201).

2. The anti-scraping meat skin needle roller according to claim 1, wherein: The roller (201) is sleeved on the support shaft (202). The support shaft (202) is a hollow shaft. A core shaft (203) is installed inside the support shaft (202). The high-pressure chamber (2031) is provided inside the core shaft (203). The mounting hole on the roller (201) is a first stepped hole (2014). The support shaft (202) is provided with a number of transition through holes (2022). The core shaft (203) is provided with a number of second stepped holes (2033). The first stepped hole (2014), the second stepped hole (2033), and the transition through hole (2022) are all centered.

3. The anti-scraping meat skin needle roller according to claim 2, wherein: The needle roller assembly (205) includes a micro-needle (2051). A spring fixing plate (2053) is fixedly installed on the micro-needle (2051). A return spring (2052) sleeved on the micro-needle (2051) is installed on the spring fixing plate (2053). One end of the return spring (2052) is fixed on the spring fixing plate (2053), and the other end abuts against the stepped end face of the first stepped hole (2014). The micro-needle (2051) penetrates through the first stepped hole (2014), the second stepped hole (2033), and the transition through hole (2022). The diameter of the transition through hole (2022) is larger than the diameter of the micro-needle (2051). A limiting platform (2054) is provided at the root of the micro-needle (2051), and the limiting platform (2054) abuts against the stepped end face of the second stepped hole (2033).

4. The anti-scraping meat skin needle roller according to claim 3, wherein: The pressure relief structure (206) is a cylinder with one end closed and the other end provided with an opening. The closed end of the pressure relief structure (206) protrudes from the surface of the support shaft (202) and is located inside the roller (201). The opening end of the pressure relief structure (206) is communicated with the high-pressure chamber (2031).

5. The anti-scraping meat skin needle roller according to claim 4, wherein: A quick connector (204) for unidirectional ventilation into the high-pressure chamber (2031) is provided at one end of the core shaft (203).

6. The anti-scratch meat skin rolling needle according to claim 1, wherein: The handle (1) includes a handle portion (101) and a bracket (102), and the handle portion (101) is fixedly connected to the bracket (102); A metallurgical sleeve (3) is mirror-mounted on the bracket (102), and the metallurgical sleeve (3) is in rolling connection with a support shaft (202), and limit nuts (4) are respectively installed at both ends of the support shaft (202).

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