Laser beam safety blocking device
The laser beam safety blocking device addresses component damage in high-power carbon dioxide laser therapy devices by redirecting and absorbing laser energy, ensuring safe operation through a movable reflector and cooling system.
Patent Information
- Application Number
- CN202323539143.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-25
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2033-12-25
AI Technical Summary
Existing carbon dioxide laser therapy devices with higher output power face issues of component damage due to high reflectivity and heat absorption by metal shielding sheets, leading to potential fire and lens damage.
A laser beam safety blocking device with a reflector and energy absorption cavity, utilizing a movable reflector to redirect and absorb laser energy, combined with cooling channels for heat dissipation, effectively managing high-power laser beams.
The device safely blocks and dissipates high-power laser energy, protecting machine components by redirecting and absorbing energy, preventing damage and ensuring safe operation.
Smart Images
Figure CN222172260U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a laser beam safety blocking device, in particular to a safety device which can block unexpected carbon dioxide laser output and effectively absorb energy that may be generated by the laser, and belongs to the technical field of medical lasers. Background Art
[0002] At present, carbon dioxide laser therapy devices have been widely used in surgical operations such as otolaryngology, dermatology, cosmetology, gynecology, and neurosurgery. In medical laser equipment, a safety baffle is used to directly block the laser output path to achieve the purpose of safe use of lasers. Usually, a removable metal shielding sheet is inserted into the laser output port. However, a simple metal sheet can only effectively block the safety beam below the national standard, and is not very suitable for carbon dioxide laser therapy machines with higher output power. The main reasons are:
[0003] The laser beam of a high-power CO2 laser beam may cause unexpected damage to the components in the machine, such as burning, insulation damage or fire. Since the metal shielding sheet has a high reflectivity to CO2 lasers, the reflected beam may irradiate anywhere in the machine during movement and cause unexpected damage. In addition, part of the blocked laser beam is absorbed by the shielding sheet, which will absorb heat in a short time and become very hot, damaging the mechanism connected to it. Another part of the blocked laser beam will be reflected by the shielding sheet back to the lens of the laser light outlet, which may damage the laser. Utility Model Content
[0004] The utility model aims to provide a laser beam safety blocking device, which is used in a carbon dioxide laser therapeutic machine with higher output power, so as to overcome the shortcomings of the prior art.
[0005] In order to achieve the above technical purpose, the technical solution adopted by the utility model is as follows:
[0006] A laser beam safety blocking device comprises a shell, wherein the shell has a cavity inside, wherein the cavity is composed of a reflector moving cavity and an energy absorption cavity that are connected to each other, a horizontal channel connected to the reflector moving cavity is opened at one end of the shell, and an optical path channel connected to the reflector moving cavity is also opened vertically on the shell;
[0007] A moving rod is installed in the reflector moving cavity, a reflector is installed at the front end of the moving rod, the reflector is tilted facing the energy absorbing cavity, the tail end of the moving rod passes through the horizontal channel and extends out of the shell, and a metal ball is arranged in the energy absorbing cavity;
[0008] When the movable rod moves toward one side of the energy absorption chamber, the reflector reflects the laser beam onto the metal ball.
[0009] Furthermore, the cavity wall of the energy absorption cavity is a threaded groove.
[0010] Furthermore, a limiting rod is fixedly connected to the movable rod, and the shell has a limiting cavity above or below the horizontal channel; when the limiting rod moves to the front end face of the limiting cavity, the reflecting mirror blocks and reflects the laser beam, and when the limiting rod moves to the rear end face of the limiting cavity, the reflecting mirror leaves the optical path channel.
[0011] Furthermore, a circle of convex edges is provided on the inner wall of the shell between the reflector moving cavity and the energy absorbing cavity along the circumferential direction of the inner wall.
[0012] Furthermore, the shell is provided with a water cooling channel or an air cooling channel at one end close to the energy absorption chamber.
[0013] The principle of the utility model is that the reflector is driven to move back and forth in the reflector moving cavity by moving the rod, and the light path of the high-power carbon dioxide laser beam can be safely blocked by the reflector, the laser output direction can be blocked and changed, and the beam energy is absorbed by the metal ball and the threaded groove of the energy absorption cavity. The laser is scattered by the spherical surface and reflected multiple times by the threaded groove and absorbed by the interface, and the energy is converted into heat of the metal body of the device itself. The path of the laser beam can also be restored after removing the blocking of the reflector. The convex edge of the inner wall of the shell can increase the absorption of the beam energy by the threaded groove. The effective heat dissipation of the shell is achieved through the water cooling or air cooling channel.
[0014] Compared with the prior art, the beneficial effects of the present invention are:
[0015] 1. The utility model is suitable for blocking carbon dioxide laser beams with higher output power, making up for the shortcomings of the prior art.
[0016] 2. The utility model can safely absorb and dissipate blocked laser energy, thereby protecting components of the carbon dioxide laser therapy machine and avoiding possible damage to the laser. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 This is a schematic structural diagram of an embodiment of the utility model (the laser beam in the figure is not blocked).
[0018] Figure 2 This is a diagram of the use state of an embodiment of the utility model (the laser beam in the figure is blocked and reflected). DETAILED DESCRIPTION
[0019] The utility model is further described in detail below in conjunction with the accompanying drawings and specific embodiments. According to the following description, the purpose, technical solution and advantages of the utility model will become clearer. It should be noted that the described embodiments are preferred embodiments of the utility model, but not all embodiments.
[0020] Combination Figure 1 and Figure 2 As shown, a laser beam safety blocking device comprises a housing 1, wherein the housing has a cavity 10 inside, wherein the cavity is composed of a reflector moving cavity 101 and an energy absorption cavity 102 which are interlinked. A horizontal channel 11 which is interlinked with the reflector moving cavity 101 is provided at one end of the housing 1, and an optical path channel 12 which is interlinked with the reflector moving cavity 101 is also provided vertically on the housing 1, wherein the opening position of the optical path channel 12 may be close to the energy absorption cavity 102; a moving rod 2 is installed in the reflector moving cavity 101, a reflector 3 is installed at the front end of the moving rod 2, and the reflector 3 is arranged obliquely facing the energy absorption cavity 102, and the tail end of the moving rod 2 passes through the horizontal channel 11 and extends out of the housing, and a metal ball 5 is provided in the energy absorption cavity 102, and the moving rod 2 may move forward and backward relative to the horizontal channel 11. When the moving rod 2 moves toward the side of the energy absorption cavity 102, the reflector 3 blocks the optical path of the laser beam 4 and reflects the beam onto the metal ball 5. The cavity wall of the energy absorption cavity 102 preferably adopts a threaded groove 103 , which can increase laser reflection and interface absorption in the energy absorption cavity 102 .
[0021] Preferably, a circle of convex edges 105 are provided on the inner wall of the shell between the reflector moving cavity 101 and the energy absorbing cavity 102 along the circumferential direction of the inner wall.
[0022] In order to achieve accurate positioning of the reflector, a limiting rod 6 is fixedly connected to the movable rod 2, and the shell 1 opens a limiting cavity 104 above or below the horizontal channel 11; when the limiting rod 6 moves to the front end face of the limiting cavity 104, the reflector 3 blocks and reflects the laser beam 4, and when the limiting rod 6 moves to the rear end face of the limiting cavity 104, the reflector 3 leaves the optical path channel 12 and restores the path of the laser beam.
[0023] The shell 1 is provided with a water cooling channel 6 or an air cooling channel at one end close to the energy absorption chamber 102 for achieving effective heat dissipation of the shell.
[0024] The above is only a description of the preferred embodiment of the utility model, and is not a limitation of the protection scope of the utility model. Obviously, any technician familiar with the field can easily think of replacement or change to obtain other embodiments based on the above embodiments, which should all be included in the protection scope of the utility model.
Claims
1. A laser beam safety blocking device, characterized in that: The invention comprises a shell, wherein the shell has a cavity inside, wherein the cavity is composed of a reflector moving cavity and an energy absorption cavity which are connected to each other, a horizontal channel which is connected to the reflector moving cavity is provided at one end of the shell, and an optical path channel which is connected to the reflector moving cavity is also provided vertically on the shell; A moving rod is installed in the reflector moving cavity, a reflector is installed at the front end of the moving rod, the reflector is tilted facing the energy absorbing cavity, the tail end of the moving rod passes through the horizontal channel and extends out of the shell, and a metal ball is arranged in the energy absorbing cavity; When the movable rod moves toward one side of the energy absorption chamber, the reflector reflects the laser beam onto the metal ball.
2. The laser beam safety blocking device according to claim 1, characterized in that: The cavity wall of the energy absorption cavity is a thread-shaped groove.
3. The laser beam safety blocking device according to claim 1, characterized in that: The movable rod is fixedly connected to a limit rod, and the shell is provided with a limit cavity above or below the horizontal channel; When the limiting rod moves to the front end surface of the limiting cavity, the reflecting mirror blocks and reflects the laser beam, and when the limiting rod moves to the rear end surface of the limiting cavity, the reflecting mirror leaves the optical path.
4. The laser beam safety blocking device according to claim 1, characterized in that: A circle of convex edges is arranged on the inner wall of the shell between the reflector moving cavity and the energy absorbing cavity along the circumferential direction of the inner wall.
5. The laser beam safety blocking device according to claim 1, characterized in that: The shell is provided with a water cooling channel or an air cooling channel at one end close to the energy absorbing chamber.