A picosecond laser

Abstract

The present application relates to the technical field of laser, especially to a picosecond laser, comprising a treatment hand tool, the lower surface of the laser head at the bottom end of the treatment hand tool is provided with two supporting legs, the bottom end of each supporting leg is provided with a semicircular ring, the supporting leg comprises an inclined leg, the top end of the inclined leg is fixedly connected with the lower surface of the laser head, and the bottom end is fixedly connected with a limiting block; the distance between the two inclined legs gradually decreases along the vertically downward direction, the included angle between the inclined leg and the axis of the treatment hand tool is 8-15°; a sliding block is axially and limitingly arranged on the inclined leg, the bottom end of the sliding block is detachably connected with the semicircular ring through a connecting leg; and an elastic pushing part is arranged between the top end of the inclined leg and the top of the sliding block. The present application uses a mechanical structure to replace manual tensioning of the skin of the user's treatment area, so that the operator needs to monitor the skin state, and the treatment accuracy is improved.

Description

Technical Field

[0001] This invention relates to the field of laser technology, specifically to a picosecond laser. Background Technology

[0002] Picosecond lasers are cutting-edge technologies in the field of medical aesthetics, with their core principle based on the "photoacoustic effect" and "selective photothermal effect" of ultrashort pulse lasers. This device generates laser pulses with pulse widths in the picosecond range (10⁻¹² seconds) through mode-locking technology, releasing high energy in an extremely short time, causing photons to create a nonlinear effect in skin tissue. When a specific wavelength (such as 532nm or 1064nm) of laser penetrates the epidermis, melanin granules absorb energy and instantly expand and rupture, producing a micro-explosion effect that pulverizes the pigment granules into nanoscale particles, which are then metabolized and eliminated through the lymphatic system. This process causes minimal thermal damage to surrounding normal tissue, significantly reducing the risk of post-laser hyperpigmentation after traditional laser treatments.

[0003] In clinical practice, manually tauting the skin at the treatment site using picosecond lasers is a crucial preliminary step. The core reason for this is that skin naturally possesses elasticity and wrinkles. Direct laser treatment on loose skin can lead to uneven energy distribution—some areas may have excessively high energy density due to wrinkles, potentially causing burns or pigmentation abnormalities; other areas may experience energy attenuation due to insufficient stretching, affecting treatment effectiveness. Manually tauting the skin ensures a smooth and firm treatment area, allowing the laser pulse to penetrate the epidermis evenly and precisely target the target tissue (such as melanocytes or nevus cells). However, manual tautness requires frequent adjustments to match the laser's firing rhythm, prolonging treatment time and reducing equipment utilization. Furthermore, the operator must be distracted by monitoring the skin's condition, potentially diverting attention from laser parameters (such as pulse width and energy density), thus affecting treatment accuracy. Summary of the Invention

[0004] The purpose of this invention is to provide a picosecond laser to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A picosecond laser includes a treatment handpiece. The lower surface of the laser head at the bottom of the treatment handpiece is provided with two legs. The bottom end of each leg is provided with a semi-circular ring. The leg includes an inclined leg. The top end of the inclined leg is fixedly connected to the lower surface of the laser head, and the bottom end is fixed with a limit block.

[0007] Along the vertically downward direction, the distance between the two oblique legs and the axis of the treatment hand gradually decreases, and the angle between the oblique legs and the axis of the treatment hand is 8-15°;

[0008] The inclined leg is axially limited and slidably provided with a slider, and the bottom end of the slider is detachably connected to the semi-circular ring through a connecting leg;

[0009] An elastic push-away component is provided between the top of the inclined leg and the top of the slider, for pushing the slider away from the top of the inclined leg.

[0010] Preferably, the elastic push-away component includes a first magnet block and a second magnet block. The first magnet block is embedded in the top of the slider and sleeved on the outside of the inclined leg. The second magnet block is sleeved and fixed on the top of the inclined leg.

[0011] The magnetic poles at the upper end of the first magnet block and the magnetic poles at the lower end of the second magnet block are the same.

[0012] Preferably, the connecting leg includes a socket and a plug, wherein the top end of the socket is fixedly connected to the bottom end of the slider;

[0013] The socket has a through hole inside, and the bottom of the through hole has a square hole.

[0014] The insert includes a square post and a cylindrical post that are fixedly connected. The bottom end of the square post is fixedly connected to the semi-circular ring. The cylindrical post is detachably inserted into the inside of the insertion hole. The bottom end of the square post is inserted into the inside of the square hole.

[0015] Preferably, a piston is fixedly connected to the top end of the cylinder, and the piston is slidably sealed inside the insertion hole;

[0016] The bottom surface of the slider is provided with a vent hole, the side surface of the slider is provided with an exhaust hole, and the top of the insertion hole is connected to the exhaust hole through the vent hole.

[0017] The slider has a slidable sealing member on its side. The sealing member can slide up and down in a direction parallel to the axial direction of the inclined leg. When the sealing member moves down to the lowest point, it covers the exhaust port of the exhaust hole. When the sealing member moves up to the highest point, it moves away from the exhaust port of the exhaust hole.

[0018] Preferably, the sealing element includes a stop plate and a flexible sealing plate fixedly connected to the stop plate, the stop plate is disposed on the top of the slider, and a portion of the stop plate is located between the first magnet block and the second magnet block;

[0019] When the flexible sealing piece moves down to the lowest point, the flexible sealing piece covers the exhaust port of the exhaust hole;

[0020] When the flexible sealing piece moves to its highest point, it moves away from the exhaust port of the exhaust hole.

[0021] Preferably, the sealing component further includes a connecting piece, the top end of which is fixedly connected to the stop piece, and the bottom end of which is fixedly connected to the flexible sealing piece.

[0022] Preferably, two symmetrical grooves are formed on the slider, and the extending direction of the grooves is parallel to the axial direction of the inclined leg;

[0023] Two sliding protrusions are fixedly connected to the connecting piece, and the two sliding protrusions are respectively slidably disposed inside the two sliding grooves.

[0024] Preferably, elastic flaps are fixed on both sides of the connecting piece, and the two sliding protrusions are respectively fixedly connected to the two elastic flaps.

[0025] Preferably, the support leg further includes a vertical leg, the top end of which is fixedly connected to the lower surface of the laser head, and the bottom end of which is fixedly connected to the top end of the inclined leg.

[0026] Compared with the prior art, the beneficial effects of the present invention are:

[0027] This invention utilizes two semicircular rings, along with inclined legs and a slider. When the semicircular rings come into contact with the user's skin, applying a small downward pressure to the treatment handpiece causes the two semicircular rings to move synchronously to both sides. The friction between the semicircular rings and the user's skin is then used to pull the skin between the two semicircular rings, tightening the skin at that location for easier treatment. Then, with the help of an elastic push-away component, when the semicircular rings separate from the user's skin, they can come together again and reconnect to form a single ring, preparing for treatment of the next area. This mechanical structure replaces manual tensioning of the user's skin in the treatment area, reducing the need for the operator to focus on monitoring the skin's condition and improving treatment accuracy. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of the treatment handpiece of the present invention;

[0029] Figure 2 This is a schematic diagram of the structure of the two legs, two semi-circular rings, two connecting legs, and two sliders of the present invention.

[0030] Figure 3 This is a schematic diagram of the structure of the support leg, semi-circular ring, connecting leg, and slider of the present invention;

[0031] Figure 4 This is a cross-sectional three-dimensional structural diagram of the slider of the present invention;

[0032] Figure 5 This is a cross-sectional three-dimensional structural diagram of the socket of the present invention;

[0033] Figure 6 This is a schematic diagram of the semi-circular ring and the insert structure of the present invention;

[0034] Figure 7 This is a schematic diagram of the slider of the present invention;

[0035] Figure 8 This is a schematic diagram of the sealing component of the present invention.

[0036] In the diagram: 1. Treatment handpiece; 2. Laser head; 3. Support leg; 31. Vertical leg; 32. Angled leg; 33. Limiting block; 4. Semicircular ring; 5. Connecting leg; 51. Socket; 511. Insertion hole; 512. Square hole; 52. Insertion leg; 521. Square column; 522. Cylindrical column; 523. Piston; 6. Sliding block; 61. Through hole; 62. Sliding groove; 63. Air guide hole; 64. Exhaust hole; 7. First magnet block; 8. Second magnet block; 9. Sealing component; 91. Connecting piece; 92. Stop piece; 93. Flexible sealing piece; 94. Elastic wrap; 95. Sliding protrusion. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] Please see Figures 1-8 The present invention provides a technical solution:

[0039] A picosecond laser mainly comprises three parts: a main unit, a light guide arm, and a treatment handpiece 1. The main unit has a built-in laser generator and control system; the light guide arm is an optical transmission system that connects the main unit and the treatment handpiece 1, and its core function is to transmit the laser energy generated by the main unit to the treatment handpiece 1 without loss, while supporting multi-angle adjustment and flexible operation; the treatment handpiece is a terminal tool that directly acts on the skin.

[0040] Specifically, this technical solution is to improve the structure of the treatment handpiece 1 of the picosecond laser. Since it does not involve the improvement of the main unit and the light guide arm, the main unit and the light guide arm are not shown in the attached drawings. The lower surface of the laser head 2 at the bottom of the treatment handpiece 1 is provided with two legs 3. The bottom of the two legs is connected to the same ring. All of the above are existing technologies and will not be described in detail here.

[0041] Unlike existing technologies, this technical solution divides the circular ring into two semicircular rings 4. Each leg 3 has a semicircular ring 4 at its bottom. The leg 3, together with the semicircular ring 4, is used to limit the distance between the laser head 2 and the skin, ensuring that the distance between the laser head 2 and the skin is the optimal treatment distance.

[0042] The main improvement of this technical solution is that when the semicircular ring 4 is in contact with the user's skin, and a small downward pressure is applied to the treatment handpiece 1, the two semicircular rings 4 can move to both sides synchronously. At this time, the friction between the semicircular ring 4 and the user's skin can be used to pull the skin between the two semicircular rings 4, so that the skin at this position is taut. When the semicircular ring 4 is separated from the user's skin, the two semicircular rings 4 can come closer together again and connect to form a ring.

[0043] The specific implementation method is as follows: The support leg 3 includes a vertical leg 31, an inclined leg 32, and a limiting block 33. The top end of the vertical leg 31 is fixedly connected to the lower surface of the laser head 2, and the bottom end of the vertical leg 31 is fixedly connected to the top end of the inclined leg 32. The limiting block 33 is fixed to the bottom end of the inclined leg 32. By adjusting the length of the vertical leg 31, the distance between the semicircular ring 4 and the laser head 2 can be adjusted, without changing the inclination of the inclined leg 32.

[0044] Along the vertically downward direction, the distance between the two inclined legs 32 and the axis of the treatment handpiece 1 gradually decreases, and the angle between the inclined legs 32 and the axis of the treatment handpiece 1 is 8-15°. In this embodiment, the angle between the inclined legs 32 and the axis of the treatment handpiece 1 is 10°. A slider 6 is axially limited and slidably provided on the inclined legs 32. Specifically, a through hole 61 is provided on the slider 6, and the inclined legs 32 slide through the through hole 61. The bottom end of the slider 6 is detachably connected to the semi-circular ring 4 through a connecting leg 5. In this embodiment, the cross-sectional shape of the inclined legs 32 can be elliptical to achieve axial limited sliding between the inclined legs 32 and the slider 6. The advantage of this setting is that it can prevent the slider 6 from rotating around the inclined legs 32.

[0045] An elastic push-away component is provided between the top of the inclined leg 32 and the top of the slider 6 to push the slider 6 away from the top of the inclined leg 32.

[0046] In the above scheme, by setting two semicircular rings 4, and cooperating with the inclined leg 32 and the slider 6, when the semicircular rings 4 come into contact with the user's skin, when a small downward pressure is applied to the treatment handpiece 1, the two semicircular rings 4 can move to both sides synchronously. At this time, the friction between the semicircular rings 4 and the user's skin can be used to pull the skin located between the two semicircular rings 4, so that the skin at this position is tightened, which facilitates treatment. Then, with the help of the elastic push-away component, when the semicircular rings 4 separate from the user's skin, the two semicircular rings 4 can come closer together again and connect to form a ring, preparing for the treatment of the next area. In this way, the mechanical structure replaces manual tightening of the skin of the user's area to be treated, so that the operator does not need to be distracted by monitoring the skin condition, thus improving the accuracy of treatment.

[0047] The elastic push-away component includes a first magnet 7 and a second magnet 8. The first magnet 7 is embedded in the top of the slider 6 and is sleeved on the outside of the inclined leg 32. The second magnet 8 is sleeved and fixed at a suitable position on the top of the inclined leg 32. The position of the second magnet 8 can be adjusted according to the actual situation if necessary. The magnetic poles at the upper end of the first magnet 7 and the lower end of the second magnet 8 are the same. When the distance between the first magnet 7 and the second magnet 8 gradually approaches, the force exerted by the semicircular ring 4 on the user's skin gradually increases due to the principle of like poles repelling each other, thus ensuring that the skin of the user's treatment area is in a taut state. In addition, in this embodiment, the limiting block 33 can also be made of magnet, and an iron block is embedded in the bottom surface of the slider 6 so that the slider 6 can be attracted and connected to the limiting block 33 when it is at its lowest point.

[0048] To facilitate the replacement of the semicircular ring 4 and prevent cross-contamination, in this technical solution, the connecting leg 5 includes a socket 51 and a plug leg 52. The top end of the socket 51 is fixedly connected to the bottom end of the slider 6. A through-hole 511 is provided inside the socket 51, and a square hole 512 is provided at the bottom of the inner part of the through-hole 511. The plug leg 52 includes a square post 521 and a cylindrical post 522 fixedly connected. The bottom end of the square post 521 is fixedly connected to the semicircular ring 4, and the cylindrical post 522 is detachably inserted into the inside of the through-hole 511. The bottom end of the square post 521 is inserted into the inside of the square hole 512. Thus, the semicircular ring 4 can be replaced by directly pulling down the plug leg 52 to remove it from the socket 51. Specifically, in this embodiment, the semicircular ring 4 can be made of plastic, making it a disposable consumable. Alternatively, the semicircular ring 4 can be made of stainless steel, allowing it to be reused after disinfection and sterilization, depending on the specific circumstances. The square post 521, in conjunction with the square hole 512, is used to define the direction of the semicircular ring 4.

[0049] A piston 523 is fixedly connected to the top of the cylinder 522, and the piston 523 is slidably sealed inside the insertion hole 511; the bottom surface of the slider 6 is provided with a vent hole 63, and the side surface of the slider 6 is provided with an exhaust hole 64. The top of the insertion hole 511 is connected to the exhaust hole 64 through the vent hole 63; when the cylinder 522 is inserted into the insertion hole 511, the air above the piston 523 can be discharged through the vent hole 63 and the exhaust hole 64.

[0050] A sealing element 9 is slidably provided on the side of the slider 6. The sealing element 9 can slide up and down in a direction parallel to the axis of the inclined leg 32. When the sealing element 9 moves down to the lowest point, it covers the exhaust port of the exhaust hole 64. At this time, the air in the external environment cannot enter the interior of the insertion hole 511 through the air guide hole 63 and the exhaust hole 64. That is, the cylinder 522 cannot be pulled out from the interior of the insertion hole 511 in this state. When the sealing element 9 moves up to the highest point, it moves away from the exhaust port of the exhaust hole 64. At this time, the external air can enter the interior of the insertion hole 511 through the air guide hole 63 and the exhaust hole 64. That is, the cylinder 522 can be pulled out from the interior of the insertion hole 511 in this state. This setting improves the stability of the semi-circular ring 4.

[0051] The sealing component 9 includes a stop plate 92 and a flexible sealing plate 93 fixedly connected to the stop plate 92. The stop plate 92 is located on the top of the slider 6, and a portion of the stop plate 92 is located between the first magnet block 7 and the second magnet block 8. The stop plate 92 can be made of plastic material, and its function is to prevent the first magnet block 7 and the second magnet block 8 from rigidly contacting each other, while also limiting the position of the flexible sealing plate 93. In this example, the thickness of the stop plate 92 is not limited, and the stop plate 92 can be installed in a detachable manner, so that stop plates 92 of different thicknesses can be replaced according to the actual situation. The thickness of the stop plate 92 determines the distance that the semicircular ring 4 can move laterally. The flexible sealing plate 93 can be made of rubber or silicone material, which has a good sealing effect.

[0052] In the above scheme, when the flexible sealing plate 93 moves down to the lowest point, the flexible sealing plate 93 covers the exhaust port of the exhaust hole 64; when the flexible sealing plate 93 moves up to the highest point, the flexible sealing plate 93 moves away from the exhaust port of the exhaust hole 64.

[0053] The sealing component 9 also includes a connecting piece 91, the top end of which is fixedly connected to the stop piece 92, and the bottom end of which is fixedly connected to the flexible sealing piece 93. Two symmetrical grooves 62 are formed on the slider 6, with the extension direction of the grooves 62 parallel to the axial direction of the inclined leg 32. Two sliding protrusions 95 are fixedly connected to the connecting piece 91. Specifically, elastic pads 94 are fixed to both sides of the connecting piece 91, and the two sliding protrusions 95 are fixedly connected to the two elastic pads 94 respectively. The two sliding protrusions 95 are slidably disposed inside the two grooves 62. The sliding protrusions 95, in conjunction with the grooves 62, enable the flexible sealing piece 93 to slide up and down, and the sliding direction of the flexible sealing piece 93 is parallel to the axial direction of the inclined leg 32.

[0054] The replacement steps for the semi-circular ring 4 in the above scheme are as follows: First, push the sealing member 9 upward so that the flexible sealing piece 93 is removed from the position of the vent hole 64. Then, the cylinder 522 can be pulled out from the inside of the insertion hole 511. Then, the cylinder 522 on the new semi-circular ring 4 can be inserted into the inside of the insertion hole 511.

[0055] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A picosecond laser, comprising a treatment handpiece, wherein two legs are disposed on the lower surface of the laser head at the bottom end of the treatment handpiece, characterized in that, Each of the legs is provided with a semi-circular ring at its bottom end. The legs include inclined legs, the top of which is fixedly connected to the lower surface of the laser head, and the bottom end is fixed with a limit block. Along the vertically downward direction, the distance between the two oblique legs and the axis of the treatment hand gradually decreases, and the angle between the oblique legs and the axis of the treatment hand is 8-15°; The inclined leg is axially limited and slidably provided with a slider, and the bottom end of the slider is detachably connected to the semi-circular ring through a connecting leg; An elastic push-away component is provided between the top of the inclined leg and the top of the slider, for pushing the slider away from the top of the inclined leg; When in use, applying downward pressure to the treatment handpiece causes the two semicircular rings to move synchronously to both sides, thus tightening the skin between the two semicircular rings. The elastic push-away component includes a first magnet block and a second magnet block. The first magnet block is embedded in the top of the slider and is sleeved on the outside of the inclined leg. The second magnet block is sleeved and fixed to the top of the inclined leg. The magnetic poles at the upper end of the first magnet block and the magnetic poles at the lower end of the second magnet block are the same; The connecting leg includes a socket and a plug, wherein the top end of the socket is fixedly connected to the bottom end of the slider; The socket has a through hole inside, and the bottom of the through hole has a square hole. The insert includes a square post and a cylindrical post that are fixedly connected. The bottom end of the square post is fixedly connected to the semi-circular ring. The cylindrical post is detachably inserted into the inside of the insertion hole. The bottom end of the square post is inserted into the inside of the square hole.

2. The picosecond laser according to claim 1, characterized in that, A piston is fixedly connected to the top of the cylinder, and the piston is slidably sealed inside the insertion hole. The bottom surface of the slider is provided with a vent hole, the side surface of the slider is provided with an exhaust hole, and the top of the insertion hole is connected to the exhaust hole through the vent hole. The slider has a slidable sealing member on its side. The sealing member can slide up and down in a direction parallel to the axial direction of the inclined leg. When the sealing member moves down to the lowest point, it covers the exhaust port of the exhaust hole. When the sealing member moves up to the highest point, it moves away from the exhaust port of the exhaust hole.

3. A picosecond laser according to claim 2, characterized in that, The sealing component includes a stop plate and a flexible sealing plate fixedly connected to the stop plate. The stop plate is disposed on the top of the slider, and a portion of the stop plate is located between the first magnet block and the second magnet block. When the flexible sealing piece moves down to the lowest point, the flexible sealing piece covers the exhaust port of the exhaust hole; When the flexible sealing piece moves to its highest point, it moves away from the exhaust port of the exhaust hole.

4. A picosecond laser according to claim 3, characterized in that, The sealing component also includes a connecting piece, the top end of which is fixedly connected to the stop piece, and the bottom end of which is fixedly connected to the flexible sealing piece.

5. A picosecond laser according to claim 4, characterized in that, The slider has two symmetrical grooves, and the extending direction of the grooves is parallel to the axis of the inclined leg. Two sliding protrusions are fixedly connected to the connecting piece, and the two sliding protrusions are respectively slidably disposed inside the two sliding grooves.

6. A picosecond laser according to claim 5, characterized in that, Both sides of the connecting piece are fixed with elastic pads, and the two sliding protrusions are respectively fixedly connected to the two elastic pads.

7. A picosecond laser according to claim 1, characterized in that, The support leg also includes a vertical leg, the top of which is fixedly connected to the lower surface of the laser head, and the bottom of which is fixedly connected to the top of the inclined leg.

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