KR100798636B1 - A nd:yap laser apparatus for removing fatty tissue - Google Patents

Abstract

An Nd:YAP laser apparatus for removing fatty tissue is provided to irradiate laser beam for removing selectively fatty tissue smoothly and efficiently inside and outside the skin. An Nd:YAP laser apparatus for removing fatty tissue includes an Nd:YAP laser oscillating portion(110), a beam combiner and filter(120), convergence lens(130), an optic fiber(140), a fiber cut time detecting portion(150) and a warning device. The Nd:YAP laser oscillating portion includes a flash lamp(112), an Nd:YAP rod(113), high reflection mirrors(114) and an output coupler mirror(115). The fiber cut time detecting portion measures the energy amount of laser beam that is reflected on the end of the optical fiber and is reflected on the beam combiner and filter again, and outputs a fiber cut notifying signal when the energy amount reaches a set up energy amount.

Description

Nd: YAP LASER Apparatus for Removing Fatty Tissue}

The present invention relates to a Nd: YAP (Neodymium: Yttrium Aluminum Perovskite) laser, and in particular, it is possible to irradiate a laser beam for fat removal selectively outside and inside the skin, and using a high energy per pulse Nd: YAP laser The 930nm wavelength laser beam, which absorbs light, is irradiated to the fat to remove fat smoothly and efficiently, and to inform the user when to cut or replace the optical fiber used for fat removal. The present invention relates to an Nd: YAP laser device for removing fat, which is suitable for maximizing the convenience of the environment.

Figure 1 shows an analysis showing the absorption of the laser light to fat and water.

As shown in FIG. 1, it can be seen that the wavelength at which fat absorbs light is about 930 nm, 1200 to 1220 nm, and 1740 to 1750 nm.

Considering the water absorption of the light having the wavelength is the ideal light of 1200 ~ 1220nm wavelength, but currently commercially available technology to remove fat using a Nd: YAG laser that emits a laser of 1064nm wavelength have.

In other words, the Nd: YAG laser, which emits 1064nm wavelength laser, has low absorption of fat but low absorption of water and uses 1064nm wavelength light that can produce the highest output from Nd: YAG laser. Was removed.

However, the fat removal method using the Nd: YAG laser according to the prior art has the following problems.

That is, the fat removal method using the Nd: YAG laser of the 1064nm wavelength oscillation according to the prior art, as shown in Figure 2, because the light of the 1064nm wavelength has low absorption of fat into the tissue adjacent to the fat during fat removal The laser spreads.

As described above, when the laser beam of 1064 nm wavelength spreads to the tissue adjacent to fat, damage to the extra fat tissue was caused.

That is, when the light of the 1064nm wavelength according to the prior art is used, fat removal itself is not well performed, and there is a fatal problem of damaging surrounding tissues.

The present invention was created to solve the problems of the prior art as described above, and an object of the Nd: YAP laser device for fat removal according to the present invention is to irradiate a laser beam for fat removal selectively in and out of the skin. The present invention provides a Nd: YAP laser device for fat removal, which is suitable for the following.

Another object of the Nd: YAP laser device for fat removal according to the present invention is to use a Nd: YAP laser having a high energy per pulse to irradiate fat with a 930 nm wavelength laser beam having a high absorption of fat. The present invention provides a Nd: YAP laser device for removing fat, which is suitable for efficient removal.

Another object of the Nd: YAP laser device for fat removal according to the present invention is to enable the user to know when to cut or replace the optical fiber used for fat removal to maximize the convenience of hygiene and use environment To provide a suitable fat removal Nd: YAP laser device.

Fat removal Nd: YAP laser device of the present invention for achieving the above object is a flash lamp that receives power from the power supply and emits light, 'Nd: YAP rod amplifying and oscillating the excitation light input from the flash lamp And a high reflection mirror and an output coupler mirror positioned at both sides of the Nd: YAP rod and reflecting the light output from the Nd: YAP rod. A Nd: YAP laser oscillator for oscillating a laser beam of the light source; 'Beam combiner and filter' for transmitting only the laser beam of the first wavelength among the laser beams output from the Nd: YAP laser oscillator and reflecting the reflected light reflected from the optical fiber; A convergent lens for converging the laser beam oscillated through the output mirror; An optical fiber for guiding a laser beam converged by the converging lens; The fiber cutting time detection unit outputs a fiber cutting notification signal when the amount of energy reached by measuring the energy amount of the laser beam reflected by the 'beam combiner and filter' after being reflected at the output terminal which is the end of the optical fiber is reached. And an alarm outputting an alarm signal based on the fiber cutting notification signal received from the fiber cutting time detection unit.

The Nd: YAP laser device for fat removal according to the present invention is coupled to an output end of the optical fiber to allow the optical fiber to proceed smoothly without being bent subcutaneously to guide the laser beam guided by the optical fiber. It further comprises a cannula (cannular) for guiding the subcutaneous fat.

The Nd: YAP laser device for fat removal according to the present invention is located at the output end of the optical fiber and has a parallel light conversion unit and thermal conductivity for converting the laser beam guided through the optical fiber into parallel light so as not to diverge. It characterized in that it is configured to further include a contact tip for contacting the target skin to the laser beam passing through the parallel light conversion unit to the skin.

In the Nd: YAP laser device for removing fat according to the present invention, the first wavelength is 930 nm.

Fat removal Nd: YAP laser device of the present invention having the configuration as described above has the following effects.

First, there is an effect that can selectively irradiate the laser beam outside and inside the skin by providing a contact tip or cannula selectively in the optical fiber used for fat removal.

Second, the Nd: YAP laser with high energy per pulse is used to irradiate fat with a laser beam of 930 nm wavelength having high absorption of fat, thereby removing fat smoothly and efficiently.

Third, by letting the user know the cutting or replacement time of the optical fiber used for fat removal, there is an effect that can further improve the convenience, safety and hygiene of the fat removal procedure.

The following describes in detail with reference to the accompanying drawings a preferred embodiment of the present invention, a fat removal Nd: YAP laser device.

3 is a block diagram of the Nd: YAP laser device for removing fat according to the first embodiment of the present invention.

The Nd: YAP laser device 100 for removing fat according to the first embodiment of the present invention shown in FIG. 3 is a device for directly irradiating a laser beam of 930 nm inside the skin by inserting a cannula 180 into the skin. .

As shown in FIG. 3, the Nd: YAP laser apparatus 100 for removing fat according to the first embodiment of the present invention includes a Nd: YAP laser oscillator 110 and a beam combiner and a filter. and a filter 120, a convergent lens 130, an optical fiber 140, a fiber cutting timing detector 150, an alarm 152, and a cannular 180.

The Nd: YAP laser oscillator 110 includes a flash lamp 112 that receives power from the power supply 111 and emits light, and an Nd: YAP rod that amplifies and oscillates the excitation light input from the flash lamp 112. 'High Reflection Mirror' 114 located at both sides of the '113' and the 'Nd: YAP Rod' 113 and reflecting the light output from the 'Nd: YAP Rod' 113; And an 'Output Coupler Mirror' 115 to oscillate a 930nm laser beam.

The 930 nm laser beam output from the laser oscillator 110 has a pulse width of 150 (us), an energy per pulse of 500 to 1000 (mJ), and a repetition rate of 1 to 50 (Hz). Operate with a pulse.

The Nd: YAP laser oscillator 110 has both end surfaces of the 'Nd: YAP rod' 113 and an inner surface of the total reflection mirror 114 so that only a 930 nm wavelength laser beam is oscillated through the output mirror 115. The inner surface 115a and the outer surface 115b of the 114a and the output mirror 115 are coated.

Specifically, in order to only oscillate the laser beam of the 930nm wavelength, both surfaces of the Nd: YAP rod 113 is coated to have a reflectance of less than 1% of light in the wavelength range of 860 ~ 1350nm (particularly 0.5 at 930nm) Coated to have a reflectance of less than or equal to%), the inner surface 114a of the total reflection mirror 114 has a reflectance of 99.5% or more at a wavelength of 930 nm, and a transmittance of 90% or more in a wavelength band of 1050 to 1100 nm and 1310 to 1350 nm, It is coated to have a transmittance of 20% or more in the wavelength band of 860 ~ 900nm, the inner surface 115a of the output mirror 115 has a reflectance of 80% at a wavelength of 930nm, wavelength band of 1050 ~ 1100nm and 1310 ~ 1350nm Has a transmittance of 90% or more, and is coated to have a transmittance of 20% or more in the wavelength band of 860 to 900 nm, and the outer surface 115b of the output mirror 115 has a 99% transmittance in the wavelength band of 860 to 1100 nm. In the wavelength range of 1310-1350 nm It is coated so as to have a transmittance of more than 97%.

The reason for coating as described above is to be able to output a laser beam of 930nm wavelength.

The beam combiner and filter 120 transmits only a 930 nm wavelength laser beam among the laser beams output from the Nd: YAP laser oscillator 110 and reflects from the optical fiber 140. It is an optical element for reflecting the reflected light.

The incident surface 120a of the beam combiner and filter 120 transmits light having a wavelength of 930 nm and is coated to reflect light having a wavelength of 1050 to 1100 nm and a wavelength of 1310 to 1350 nm. For example, the incident surface 120a of the beam combiner and filter 120 has a transmittance of 99% at a wavelength of 930 nm in order to transmit a laser beam having a wavelength of 930 nm, and at the output mirror 115. In order to prevent the laser beam having a wavelength of 1079.5 nm from being incident on the optical fiber 140, the laser beam is coated to have a reflectivity of 95% or more in the 1050 to 1100 nm wavelength band and the 1310 to 1350 nm wavelength band.

In addition, the emission surface 120b of the 'beam combiner and filter' 120 is coated to have a transmittance of 99% at a wavelength of 930 nm and a reflectance of at least 80% at a wavelength range of 630 to 660 nm.

The reason for coating the entrance surface 120a and the emission surface 120b of the 'beam combiner and filter' 120 is that only the 930nm wavelength laser beam is incident on the optical fiber 140 and the light in the remaining wavelength bands is This is for preventing the incident on the fiber 140.

The convergent lens 130 converges the laser beam oscillated through the output mirror 115. The converging lens 130 is antireflective coated at a wavelength of 930 nm.

The optical fiber 140 guides the laser beam converged by the converging lens 130.

The fiber cutting timing detector 150 reflects the energy amount of the laser beam reflected by the beam combiner and filter 120 after being reflected at the end of the optical fiber 140 and reaches the set amount of energy. If the alarm 152 outputs a fiber cut notification signal.

The fiber cutting time detection unit 150 is preferably composed of a photoelectric conversion element such as a photodiode.

The alarm 152 outputs an alarm signal based on the fiber cutting notification signal received from the fiber cutting time detection unit 150.

The alarm 152 may be implemented as, for example, a speaker for outputting a voice signal or a sound signal, or a warning light for outputting an alarm light.

The cannula 180 is coupled to the output end of the optical fiber 140 so that the optical fiber 140 can be smoothly progressed without being bent subcutaneously and guided by the optical fiber 140. The laser beam is guided to the subcutaneous fat.

That is, the end of the cannula 180 is inserted into the fat (F) of the skin to guide the beam guided by the second optical fiber 160 to the subcutaneous fat (F).

The cannula 180 allows the beam guided by the optical fiber 140 to guide the subcutaneous fat even more conveniently and simply.

On the other hand, since the cannula 180 is a configuration known to those skilled in the art before the present application, a detailed description of the configuration is omitted.

In addition, the Nd: YAP laser apparatus 100 for removing fat according to the first embodiment of the present invention is characterized in that the arming beam oscillator 160 and the 'reflection and transmission mirror' 170 is further included. .

The aiming beam oscillator 160 may provide an aiming beam of a second wavelength for indicating a position at which the laser beam of the 930 nm wavelength emitted from the laser oscillator 110 is irradiated in the skin to remove fat. Output

The wavelength of the aiming beam output from the aiming beam oscillator 160, which is the second wavelength, is preferably a low power in the red wavelength band (more preferably, the wavelength of 630 nm) of, for example, 630 nm to 660 nm.

By outputting the low power aming beam of the red band having a wavelength of 630 to 660 nm, the position of the laser beam of 930 nm irradiated with the skin (more precisely, the position of the cannula 180 in the skin) can be known and thus the convenience and efficiency of the procedure. There is an advantage to maximize.

The 'reflection and transmission mirror' 170 is located at the rear end of the aming beam oscillator 160 and on the optical path between the beam combiner and filter 120 and the fiber cutting timing detector 150. In this case, the 6430 nm wavelength oscillating beam emitted from the aming beam oscillator 160 is reflected to the 'beam combiner and filter' 120 and is reflected from the 'beam combiner and filter' 120. The reflected light is transmitted to the fiber cutting time detector 150.

The incident surface 170a of the reflective and transmissive mirror 170 is coated to have a reflectivity of 90% or more in the wavelength band of 630 to 660 nm, and has a transmittance of 90% or more in the wavelength of 930 nm, and the reflective and transmissive mirror 170 Emission surface 170b is coated to have a transmittance of 90% or more at a wavelength of 930 nm.

In addition, the Nd: YAP laser device 100 for removing fat according to the first embodiment of the present invention is located between the 'reflection and transmission mirror' 170 and the fiber cutting timing detector 150, and has a wavelength of 930 nm. The laser line filter 154 that transmits only a laser beam having a wavelength of 930 nm may be further included to allow only a laser beam to enter the fiber cutting time detection unit 150.

The laser line filter 154 is coated to have a transmittance of 60% at a wavelength of 930 nm.

On the other hand, the technology for coating the optical element, including the Nd: YAP rod and the output mirror to be transmitted and reflected as described above is well known to those skilled in the art before the present application, the detailed description thereof will be omitted.

4 is a block diagram of a fat removal Nd: YAP laser device according to a second embodiment of the present invention.

The Nd: YAP laser device 100 'for fat removal according to the second embodiment of the present invention shown in FIG. 4 can irradiate a 930 nm laser beam in contact with the skin without irradiating the laser beam within the skin. Device to ensure that

As shown in FIG. 4, the Nd: YAP laser apparatus 100 ′ for fat removal according to the second embodiment of the present invention may include the Nd: YAP laser oscillation unit 110 of the first embodiment shown in FIG. 3. The beam combiner and filter 120, the convergent lens 130, the optical fiber 140, the fiber cutting timing detector 150, and the alarm 152 have the same configuration. In addition, the parallel light conversion unit 192, the contact tip 194, and TEC (Thermoelectric Cooler) (not shown) are further included.

The parallel light conversion unit 192 is positioned at the output end of the optical fiber 140 and converts the parallel light into a parallel light so that the laser beam guided through the optical fiber 140 does not diverge.

In addition, the parallel light conversion unit 192 may be configured as a convex lens.

The contact tip 194 has thermal conductivity and guides the laser beam passing through the parallel light conversion unit 192 to the skin in contact with the skin to be treated.

For example, the contact tip 194 may be made of a material having excellent thermal conductivity such as sapphire rod and not harmful to the human body even when it comes in contact with the skin.

The TEC (not shown) is provided in contact with the contact tip 194, and absorbs and releases the heat of the contact tip 194 by the power applied from the power supply to perform the function of cooling the skin of the treatment target Element.

The parallel light conversion unit 192 and the contact tip 194 is an antireflective coating so as not to reflect at the oscillation wavelength (for example, 930 nm) of the laser beam of the laser oscillation unit.

The following describes the operation process of the present invention, the fat removal Nd: YAP laser device having the configuration as described above.

When power is applied to the power supply 111, only the 930 nm wavelength laser beam is output from the output mirror 115.

At this time, light having a wavelength of 1079.5 nm and light having a wavelength of 1310 to 1350 nm that are finely generated at high output are reflected by the 'beam combiner and filter' 120 and thus cannot be incident to the optical fiber 140.

The 930 nm wavelength laser beam that has passed through the 'beam combiner and filter' 120 is converged by the converging lens 130 and guided by the optical fiber 140 and the cannula 180 to allow subcutaneous fat (F). It is irradiated directly inside to break down fat.

Meanwhile, the aiming beam oscillated by the aiming beam oscillator 160 is sequentially reflected by the reflection and transmission mirror 170 and the 'beam combiner and filter' 120, and passes through the converging lens 130 to form the fiber 140. It is incident to and informs the position of the cannula 180.

On the other hand, in the case of the second embodiment of the present invention, the laser beam guided by the optical fiber 140 is converted into parallel light by the second parallel light conversion unit 192 and then incident on the contact tip 194. It is irradiated inside the subcutaneous fat (F) from outside the skin to break down fat.

As the laser beam irradiates fat through the skin, the heat generated by the skin is cooled by the operation of the TEC.

And, as shown in Figure 5, the 930nm light used in the present invention has a high absorption of fat, so even if the user accidentally irradiated the laser tissue around the fat damage of the surrounding tissue ( The part shown in black) can be minimized.

Next, the laser beam is irradiated to the subcutaneous fat to describe the action of informing the timing of cutting or replacement of the optical fiber in the procedure.

After passing through the converging lens 130 and entering the optical fiber 140, the reflected light having a wavelength of 930 nm reflected from the end of the optical fiber 140, that is, the output terminal, passes through the converging lens 130. Reflected at the exit surface 120b of 120.

The reflected light having a wavelength of 930 nm reflected by the beam combiner and filter 120 passes through the reflection and transmission mirror 170 and is incident to the fiber cutting timing detector 150.

The fiber cutting time detection unit 150 measures the reflected light of the incident 930nm wavelength and outputs a fiber cutting notification signal to the alarm 152 when the set amount of energy is reached, and the alarm 152 from the fiber cutting time detection unit 150. An alarm signal is output based on the received fiber cutting notification signal to inform the replacement or cutting time of the optical fiber 140.

Conventionally, the replacement or cutting timing of the optical fiber 140 depends on the feeling of the operator, but according to the present invention, there is an advantage in that the accurate replacement time of the optical fiber 140 can be known.

The above embodiments of the present invention are merely one embodiment of the technical idea of the present invention, and of course, other modifications are possible within the technical idea of the present invention.

1 is an analysis diagram showing the absorption of the laser light into fat and water.

2 is a conceptual diagram in the case of using light of a 1064 nm wavelength according to the prior art.

3 is a configuration diagram of an Nd: YAP laser device for removing fat according to the first embodiment of the present invention.

4 is a block diagram of a fat removal Nd: YAP laser device according to a second embodiment of the present invention.

5 is a conceptual diagram in the case of using light having a 930 nm wavelength according to the present invention.

          Explanation of symbols on the main parts of the drawings

110; Nd: YAP laser oscillation part 111; Power supply

112; Flash lamp 113; Nd: YAP Load

114; Total reflection mirror 115; Output mirror

120; Beam combiners and filters 130; Convergence Lens

140; Fiber optic 150; Fiber cutting time detector

152; Alarm 154; Laser line filter

160; Aiming beam oscillator 170; Reflective and transmissive mirror

180; Cannula 192; Parallel light converter

194; Contact tip

Claims (12)

A flash lamp 112 that receives power from the power supply unit 111 and emits light, and a 'Nd: YAP (Neodymium: Yttrium Aluminum Perovskite) rod' 113 that amplifies and oscillates the excitation light input from the flash lamp 112. And a 'High Reflection Mirror' 114 and an 'Output' which are located at both sides of the 'Nd: YAP rod' 113 and reflects the light output from the 'Nd: YAP rod' 113. Nd: YAP laser oscillation unit 110 is configured to include a mirror '115 to oscillate the laser beam of the first wavelength; 'Beam combiner and filter' for transmitting only the laser beam of the first wavelength among the laser beams output from the Nd: YAP laser oscillator 110 and reflecting the reflected light reflected from the optical fiber 140 120; A convergent lens 130 for converging the laser beam oscillated through the output mirror 115; An optical fiber 140 for guiding a laser beam converged by the converging lens 130; When the energy amount of the laser beam reflected by the 'beam combiner and filter' 120 is reflected after being reflected at the output terminal which is the end of the optical fiber 140 and reaches the set energy amount, a fiber cutting notification signal is output. A fiber cutting time detection unit 150 for outputting; And Nd: YAP laser device for fat removal, characterized in that it comprises an alarm (152) for outputting an alarm signal based on the fiber cutting notification signal received from the fiber cutting time detection unit (150). The method according to claim 1, Coupling to the output end of the optical fiber 140 (coupling) so that the optical fiber 140 can proceed smoothly without bending subcutaneously guides the laser beam guided by the optical fiber 140 to the subcutaneous fat Nd: YAP laser device for fat removal, characterized in that further comprises a cannula (cannular) (180). The method according to claim 1, A parallel light conversion unit 192 positioned at an output end of the optical fiber 140 and converting the laser beam guided through the optical fiber 140 into parallel light so as not to diverge; And Nd for fat removal, further comprising a contact tip 194 having thermal conductivity and guiding the laser beam passing through the parallel light conversion unit 192 to the skin in contact with the skin to be treated; YAP laser device. The method according to claim 3, The contact tip 194 is provided in contact with, and further comprises a TEC (Thermoelectric Cooler) for cooling the skin to be treated by absorbing and releasing the heat of the contact tip 194 by the power applied from the power supply is configured Nd: YAP laser device for fat removal, characterized in that. The method according to claim 2 or 4, Aiming beam oscillator 160 for outputting an aiming beam of a second wavelength for indicating the position of the laser beam of the first wavelength is irradiated from the laser oscillator 110 to remove the fat in the skin Nd: YAP laser device for fat removal, characterized in that is further included. The method according to claim 5, Located at the rear end of the aming beam oscillator 160 and at the same time on the optical path between the beam combiner and filter 120 and the fiber cutting time detector 150, the aming beam oscillator 160 Aiming beam of the second wavelength is oscillated in the 'beam combiner and filter' 120, the reflected light reflected from the 'beam combiner and filter' 120 is the fiber cutting time detection unit ( Nd: YAP laser device for fat removal, characterized in that further comprises a 'reflection and transmission mirror' (170) that transmits to 150. The method according to claim 6, Located between the 'reflection and transmission mirror' 170 and the fiber cutting time detection unit 150, the laser beam of the first wavelength so that only the laser beam of the first wavelength is incident to the fiber cutting time detection unit 150. Nd: YAP laser device for fat removal, characterized in that further comprises a 'laser line filter' (154) passing through the bay. The method according to claim 7, The first wavelength is 930nm Nd: YAP laser device for fat removal, characterized in that. The method according to claim 8, The fiber cutting time detection unit 150 is a fat removal Nd: YAP laser device, characterized in that consisting of a photoelectric conversion element. The method according to claim 9, The Nd: YAP laser oscillator 110 may include both end surfaces of the Nd: YAP rod 113 and an inner surface of the total reflection mirror 114 so that only a 930 nm laser beam is oscillated through the output mirror 115. An Nd: YAP laser device for removing fat, characterized by coating 114a and an inner surface 115a and an outer surface 115b of the output mirror 115. The method according to claim 10, In order to only oscillate the laser beam of the 930nm wavelength, Both surfaces of the Nd: YAP rod 113 is coated to have a reflectance of less than 1% of light in the 860 ~ 1350nm wavelength band, The inner surface 114a of the total reflection mirror 114 has a reflectance of 99.5% or more at a wavelength of 930 nm, a transmittance of 90% or more in a wavelength band of 1050 to 1100 nm and a 1310 to 1350 nm, and a 20% wavelength in a wavelength band of 860 to 900 nm. It is coated to have the above transmittance, The inner surface 115a of the output mirror 115 has a reflectance of 80% at a wavelength of 930 nm, a transmittance of 90% or more at a wavelength range of 1050 to 1100 nm and a 1310 to 1350 nm, and a 20% wavelength at a wavelength range of 860 to 900 nm. It is coated to have the above transmittance, The outer surface 115b of the output mirror 115 is coated to have a transmittance of 99% in the wavelength range of 860 ~ 1100nm, and has a transmittance of 97% or more in the wavelength range of 1310 ~ 1350nm, Nd for fat removal A: YAP laser device. The method according to claim 11, The second wavelength is 630 nm, The incident surface 120a of the beam combiner and filter 120 transmits light having a wavelength of 930 nm and is coated to reflect light having a wavelength of 1050 to 1100 nm and a wavelength of 1310 to 1350 nm. The emission surface 120b of the beam combiner and filter 120 is coated to have a transmittance of 99% at a wavelength of 930 nm and a reflectance of at least 80% at a wavelength range of 630 to 660 nm. The incident surface 170a of the reflective and transmissive mirror 170 is coated to have a reflectivity of 90% or more in the wavelength band of 630 to 660 nm, and has a transmittance of 90% or more in the wavelength of 930 nm, and the reflective and transmissive mirror 170 Emission surface 170b) is coated to have a transmittance of 90% or more at a wavelength of 930 nm, The converging lens 130 is antireflective coating at a wavelength of 930nm, The laser line filter (154) is a fat removal Nd: YAP laser device, characterized in that the coating to have a transmittance of 60% at 930nm wavelength.

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