CN106725845B - CO2 laser treatment hand utensil - Google Patents

Abstract

The invention discloses a CO₂ The laser treatment hand tool comprises a beam parallel part, a beam dividing part and a diaphragm part which are sequentially connected from top to bottom, wherein the beam parallel part comprises a first shell and a beam parallel lens group, and an incident laser beam is injected into the first shell and becomes a parallel beam after passing through the beam parallel lens group; the beam splitting part comprises a second shell and a beam splitting lens group, and the parallel light beams emitted by the beam parallel part are emitted into the second shell and split into a plurality of parallel light beams after passing through the beam splitting lens group; the diaphragm part comprises a third shell and an iris diaphragm arranged in the third shell, the iris diaphragm is used for adjusting the size of the area of the emitted light beam, and the first shell, the second shell and the third shell are sequentially connected and are opened at the upper end and the lower end. The CO₂ The laser treatment hand tool improves the operability of the treating doctor and realizes the corresponding adjustment of CO according to hemangiomas with different sizes₂ The laser beam spot size reduces unnecessary laser damage and improves the treatment effect.

Description

CO2 laser treatment hand utensil

Technical Field

The invention relates to a medical instrument, in particular to a CO2 laser treatment hand tool.

Background

Hemangiomas are congenital benign tumors or vascular malformations, which are most commonly found in infants at birth or shortly after birth, originate from residual embryonic angioblasts, and the active endothelial-like germs invade adjacent tissues to form endothelial spline cords, which link to the remaining blood vessels after tube formation to form hemangiomas, and the intratumoral blood vessels self-forming system, which do not link to surrounding blood vessels. At present, a pulse dye laser is used for treating hemangioma, but the wavelength of dye laser emitted is 585nm or 595nm, the damage depth to the hemangioma is limited, and the maintenance cost and the consumable cost of the dye laser are relatively high; the laser destruction depth of the long pulse 1064nm laser is too deep and is not the absorption peak of water and hemoglobin, so the operation is not easy and scars are easy to leave. And photodynamic therapy or surgical therapy is difficult to operate and has high risk. The wavelength of laser emitted by CO2 laser is 10600nm, the wavelength absorbs more water, the laser energy can be converted into heat energy required by us by utilizing the characteristic of high water absorption peak, the converted heat energy is utilized to solidify the abnormal hemangioma group which we want to destroy, and the carbon dioxide laser has low cost and is a good choice for treating hemangioma. However, the continuous CO2 laser is non-selective in clinic on tissue injury, and is often accompanied with side effects such as skin scars after surgical treatment, and the lesions are cut and also damaged to different degrees on normal tissues, so that the continuous CO2 laser cannot be suitable for surgical treatment with high requirements, and further application of the CO2 laser in medical treatment is severely limited.

Disclosure of Invention

The invention aims to provide a CO2 laser treatment hand tool capable of reducing the treatment cost of hemangiomas, improving the operability of a treating doctor, realizing corresponding adjustment of the spot size of a CO2 laser beam according to the hemangiomas with different sizes, reducing unnecessary laser damage and improving the treatment effect.

In order to achieve the above object, the present invention provides the following solutions:

the invention provides a CO2 laser treatment hand tool which comprises a beam parallel part, a beam dividing part and a diaphragm part which are sequentially connected from top to bottom, wherein the beam parallel part comprises a first shell and a beam parallel lens group arranged in the first shell, and an incident laser beam is injected into the first shell and becomes a parallel beam after passing through the beam parallel lens group; the beam splitting part comprises a second shell and a beam splitting lens group arranged in the second shell, and the parallel beams emitted by the beam parallel part are emitted into the second shell and split into a plurality of parallel beams after passing through the beam splitting lens group; the diaphragm part comprises a third shell and an iris diaphragm arranged in the third shell, the iris diaphragm is used for adjusting the size of the area of the emitted light beam, and the first shell, the second shell and the third shell are sequentially connected and are opened at the upper end and the lower end.

Preferably, the beam parallel lens group is disposed on the inner wall of the first housing, and the beam parallel lens group includes a first convex lens and a first concave lens which are vertically opposite and are disposed in parallel, and the first convex lens and the first concave lens are both perpendicular to the axial direction of the first housing.

Preferably, the beam splitting lens group is disposed on an inner wall of the second housing, the beam splitting lens group includes a first lens and a second lens which are vertically opposite and are disposed in parallel, the first lens and the second lens are both perpendicular to an axial direction of the second housing, the first lens includes a plurality of second convex lenses, the second lens includes a plurality of second concave lenses, the second convex lenses and the second concave lenses are vertically corresponding and are disposed in parallel, and each of the second convex lenses and each of the second concave lenses is a hexagonal lens, and has the same size and the same number.

Preferably, 19 to 25 second convex lenses and 19 to 25 second concave lenses are respectively arranged, and the diameters of the second convex lenses and the second concave lenses are 2mm, 3mm or 4mm.

Preferably, a plurality of the second convex lenses are integrally formed to form the first lens, and a plurality of the second concave lenses are integrally formed to form the second lens.

Preferably, the first lens further comprises a first clamping groove mirror frame, a plurality of first bayonets are arranged on the first clamping groove mirror frame, and each second convex lens is respectively arranged on each first bayonet; the second lens further comprises a second clamping groove mirror frame, a plurality of second bayonets are arranged on the second clamping groove mirror frame, and each second concave lens is respectively arranged on each second bayonet.

Preferably, the CO2 laser treatment hand tool further comprises a triangular fixed foot rest, and the upper end of the triangular fixed foot rest is connected with the lower end of the third shell.

Preferably, the first shell upper end is in threaded connection with the laser outlet of the CO2 laser light guide arm, the first shell lower end is in threaded connection with the second shell upper end, the second shell lower end is in threaded connection with the third shell upper end, and the third shell lower end is in threaded connection with the triangle fixed foot rest upper end.

Preferably, the iris diaphragm comprises a movable ring, a fixed ring and a plurality of diaphragm sheets, each diaphragm sheet is in a double circular arc shape, one end of each diaphragm sheet is provided with a fixed pin, the other end of each diaphragm sheet is provided with a movable pin, the movable ring is provided with a guide groove, the fixed ring is provided with an inserting hole, the fixed pin is rotationally assembled in the inserting hole, the movable pin is movably assembled in the guide groove and can translate along the guide groove, the movable ring is connected with a rotating handle, the third shell is provided with a rotating groove, and the rotating handle penetrates through the rotating groove and stretches out of the outer wall of the third shell.

Preferably, the diaphragm sheet of the iris diaphragm is an impermeable metal sheet, and a heat-proof layer is plated on the diaphragm sheet.

Compared with the prior art, the invention has the following technical effects:

CO2 laser is invisible light, and in practical operation, the spot size is difficult to control. The existing continuous CO2 laser surgery treatment irradiation part has uneven intensity, and is often accompanied with side effects such as skin scars and the like, so that the lesions are cut and the normal tissues are damaged to different degrees; the parallel light beam emitted by the light beam parallel part is divided into a plurality of parallel light beams through the light beam dividing part, and the light beam output mode can effectively coagulate hemangioma tissues just like a honeycomb array, can keep the skin injury to be minimum, is not easy to leave scars, and has good postoperative healing effect and rapid healing. The multiple parallel beams are emitted after passing through the diaphragm part, and the iris diaphragm in the diaphragm part can adjust the quantity of the emitted beams by adjusting the aperture size of the diaphragm hole, so that the quantity of the emitted beams of the CO2 laser treatment hand tool can be correspondingly adjusted according to hemangiomas with different sizes, unnecessary laser damage to normal tissues during skin treatment can be reduced, and the treatment effect is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a cross-sectional front view of a CO2 laser treatment hand tool according to the present invention;

FIG. 2 is a schematic cross-sectional view of a beam parallel portion of a CO2 laser treatment hand tool according to the present invention;

FIG. 3 is a schematic cross-sectional view of a beam splitter of the CO2 laser treatment hand tool according to the present invention;

FIG. 4 is a schematic cross-sectional view of the diaphragm of the CO2 laser treatment hand tool according to the present invention;

FIG. 5 is a front view of a triangle fixed foot rest of the CO2 laser treatment hand tool of the present invention;

FIG. 6 is a top view of a first lens of the CO2 laser treatment hand piece of the present invention;

FIG. 7 is a top view of a second lens of the CO2 laser treatment hand piece of the present invention;

FIG. 8 is a top view of an iris of a CO2 laser treatment handpiece of the invention;

FIG. 9 is a top view of a movable ring of an iris of the invention;

FIG. 10 is a schematic view of the structure of an iris sheet of the iris of the present invention;

FIG. 11 is a schematic view of the structure of the fixed ring of the iris in the present invention;

in the figure: 1-beam parallel portion, 11-first housing, 12-first concave lens, 13-first convex lens, 2-beam split portion, 21-second housing, 22-first lens, 221-second convex lens, 23-second lens, 231-second concave lens, 3-diaphragm portion, 31-third housing, 32-iris, 321-movable ring, 3211-guide groove, 3231-insertion hole, 322-diaphragm sheet, 3221-fixed pin, 3222-movable pin, 323-fixed ring, 324-diaphragm hole, 33-rotary handle, 4-triangle fixed foot rest.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

The invention aims to provide a CO2 laser treatment hand tool capable of reducing the treatment cost of hemangiomas, improving the operability of a treating doctor, realizing corresponding adjustment of the spot size of a CO2 laser beam according to the hemangiomas with different sizes, reducing unnecessary laser damage and improving the treatment effect.

In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.

Example 1

The embodiment provides a CO2 laser treatment hand tool, as shown in fig. 1, which comprises a beam parallel part 1, abeam dividing part 2 and adiaphragm part 3 which are sequentially connected from top to bottom, wherein the beam parallel part 1 comprises afirst shell 11 and a beam parallel lens group arranged in thefirst shell 11, and an incident laser beam is emitted into thefirst shell 11 and becomes a parallel beam after passing through the beam parallel lens group; thebeam splitting part 2 includes asecond housing 21 and a beam splitting lens group provided in thesecond housing 21, and the parallel light beam emitted from thebeam splitting part 2 is incident into thesecond housing 21 and split into a plurality of parallel light beams after passing through the beam splitting lens group; thediaphragm portion 3 includes athird housing 31 and aniris 32 provided in thethird housing 31, theiris 32 being for adjusting the size of the area of the emitted light beam thereof, thefirst housing 11, thesecond housing 21 and thethird housing 31 being connected in this order and the upper and lower ends of thefirst housing 11, thesecond housing 21 and thethird housing 31 being open.

The CO2 laser treatment hand tool provided by the embodiment enables an incident laser beam to be a parallel beam through the beam parallel part, so that the irradiation intensity of the beam is uniform, and the intensity of the laser beam acting on hemangioma is uniform; the parallel light beam emitted by the light beam parallel part 1 is divided into a plurality of parallel light beams through the lightbeam dividing part 2, and the light beam output mode can effectively coagulate hemangioma tissues just like a honeycomb array, can keep the skin injury to be minimum, is not easy to leave scars, and has good postoperative healing effect and rapid healing. The multiple parallel beams are emitted after passing through thediaphragm part 3, and the size of the emergent beams can be adjusted by adjusting the aperture size of the diaphragm hole by theiris diaphragm 32 in thediaphragm part 3, so that the number of the emergent beams of the CO2 laser treatment hand tool can be correspondingly adjusted according to hemangiomas with different sizes, unnecessary laser damage to normal tissues during skin treatment can be reduced, and the treatment effect is improved.

As shown in fig. 2, the beam parallel lens group of the CO2 laser treatment hand tool of the present embodiment is preferably a firstconcave lens 12 and afirst convex lens 13 which are disposed opposite and parallel to each other, the firstconcave lens 12 and the firstconvex lens 13 are disposed on the inner wall of thefirst housing 11, and the firstconcave lens 12 and thefirst convex lens 13 are disposed perpendicular to the axial direction of thefirst housing 11. In this embodiment, the firstconcave lens 12 and thefirst convex lens 13 are preferably detachably connected to thefirst housing 11, which may be specifically threaded connection or snap connection, and the firstconcave lens 12 is disposed above the firstconvex lens 13, the CO2 laser beam diverges after passing through the firstconcave lens 12, and is refracted into a parallel beam by the firstconvex lens 13, and the laser beam emitted by the CO2 laser guiding arm becomes a parallel beam with a spot diameter of 2cm after passing through the beam parallel portion 1.

As shown in fig. 2, the beam splitting lens group of the present embodiment includes afirst lens 22 and asecond lens 23 which are disposed opposite and parallel to each other up and down, thefirst lens 22 and thesecond lens 23 are disposed on an inner wall of thesecond housing 21, thefirst lens 22 and thesecond lens 23 are both perpendicular to an axial direction of thesecond housing 21, thefirst lens 22 includes a plurality ofsecond convex lenses 221, thesecond lens 23 includes a plurality of secondconcave lenses 231, each of thesecond convex lenses 221 and each of the secondconcave lenses 231 is perpendicular to the axial direction of thesecond housing 21, and are disposed opposite and parallel to each other up and down; in this embodiment, thefirst lens 22 and thesecond lens 23 are preferably detachably connected to thesecond housing 21, which may be specifically threaded connection or snap connection, and thefirst lens 22 is disposed above thesecond lens 23, and a secondconcave lens 231 is disposed below each of thesecond convex lenses 221; as shown in fig. 6 and 7, in the present embodiment, thesecond convex lenses 221 and the secondconcave lenses 231 in the same beam splitting lens group are preferably hexagonal lenses, and the sizes and the numbers are the same. After entering thebeam splitting unit 2, the parallel light beam emitted from the beam splitting unit 1 is split into a plurality of light beams by the plurality ofsecond convex lenses 221 in thefirst lens 22 and the plurality of secondconcave lenses 231 in thesecond lens 23, and the parallel light beam emitted from thebeam splitting unit 2 is still parallel after being focused by thesecond convex lenses 221 and diverged by the secondconcave lenses 231 in order. Thebeam splitter 2 of the present embodiment can split the parallel beam emitted from the beam parallel unit 1 into a plurality of beams and make the beams emitted therefrom still parallel. The secondconvex lens 221 is a hexagonal convex lens, and the secondconcave lenses 231 in the same group of beam splitting lens groups are hexagonal concave lenses with the same shape, so that the energy loss of the laser in the propagation process is minimum and the energy utilization rate is highest.

The number of thesecond convex lenses 221 and the secondconcave lenses 231 of the present invention is preferably 19 to 25, and in this embodiment, 19second convex lenses 221 and 19 secondconcave lenses 231 are preferably provided.

According to the invention, thefirst lens 22 and thesecond lens 23 can be divided into different specifications according to the diameters of the secondconvex lens 221 and the secondconcave lens 231, the diameters of the secondconvex lens 221 and the secondconcave lens 231 can be specifically 2mm, 3mm or 4mm according to the sizes and shapes of hemangiomas to be removed, the diameters can also be other diameters, different specifications can be selected for use according to the requirements of doctors, thefirst lens 22 and thesecond lens 23 with the larger-area hemangiomas respectively provided with the larger-diameter secondconvex lens 221 and the secondconcave lens 231 are selected for use, thefirst lens 22 and thesecond lens 23 with the smaller-area hemangiomas respectively provided with the smaller-diameter secondconvex lens 221 and the secondconcave lens 231 are selected for use according to the sizes of hemangiomas, and therefore, the hemangiomas can be removed more accurately, unnecessary laser damage to normal tissues during skin treatment can be reduced, the treatment speed can be improved, and the treatment effect can be ensured.

In the present embodiment, thefirst lens 22 and thesecond lens 23 are preferably integrally formed, thefirst lens 22 is a lens formed by integrally forming a plurality ofsecond convex lenses 221, and thesecond lens 23 is a lens formed by integrally forming a plurality of secondconcave lenses 231.

As shown in fig. 5, the CO2 laser treatment hand tool of the present embodiment further includes atriangle fixing stand 4, and the upper end of thetriangle fixing stand 4 is connected with the lower end of thethird housing 31. When in use, thetriangular fixing support 4 is placed around hemangioma to be removed, the distal end of thetriangular fixing support 4 can be smoothly treated, and the damage to the skin caused by the contact of thetriangular fixing support 4 and the skin can be avoided. Thetriangle fixing support 4 is placed perpendicular to the surface of the skin, so that the laser finally emitted by the CO2 laser treatment hand tool is perpendicular to the surface of the skin, inclination can not occur, and the hemangioma removing effect is good.

The upper end of thefirst housing 11 and the laser outlet of the CO2 laser guide arm, the lower end of thefirst housing 11 and the upper end of thesecond housing 21, the lower end of thesecond housing 21 and the upper end of thethird housing 31, and the lower end of thethird housing 31 and the upper end of the triangle fixedfoot stand 4 are all in threaded connection, and accessories in thefirst housing 11 and thesecond housing 21 can be replaced conveniently according to the requirement of an operation.

As shown in fig. 4, 8, 9, 10 and 11, theiris 32 of this embodiment includes amovable ring 321, afixed ring 323 and a plurality ofdiaphragm sheets 322, eachdiaphragm sheet 322 is in a double circular arc shape, two ends of eachdiaphragm sheet 322 are respectively provided with a pin hole, one pin hole is internally provided with afixed pin 3221, the other pin hole is internally provided with amovable pin 3222, themovable ring 321 is provided with aguide slot 3211, thefixed ring 323 is provided with a plug-inhole 3231, thefixed pin 3221 is rotatably assembled in the plug-inhole 3231, themovable pin 3222 is movably assembled in theguide slot 3211 and can translate along theguide slot 3211, themovable ring 321 is connected with arotary handle 33, a rotary slot is formed in thethird housing 31, and the rotary handle passes through the rotary slot and extends out of the outer wall of thethird housing 31. Therotating handle 33 is rotated, therotating handle 33 can rotate in the rotating groove, and themovable ring 321 can be synchronously driven to rotate, so that themovable pin 3222 on thediaphragm piece 322 is pushed to rotate, and thediaphragm piece 322 swings by taking thefixed pin 3221 as a fulcrum, so that the aperture size of thediaphragm hole 324 formed by thediaphragm piece 322 is changed along with the rotation of themovable ring 321. The multiple parallel beams are emitted after passing through thediaphragm part 3, and the size of the emitted beams can be adjusted by theiris diaphragm 32 in thediaphragm part 3 through adjusting the aperture size of thediaphragm hole 324, namely the size of the beam area of the emitted beams is adjusted, so that the size of the area of the beam emitted by the CO2 laser beam, which acts on the hemangioma, can be correspondingly adjusted according to hemangiomas with different sizes, and the treatment effect is improved.

In this embodiment, thediaphragm piece 322 of theiris 32 is an impermeable metal piece, and the heat-proof layer is plated on thediaphragm piece 322, so that the service life of theiris 32 can be prolonged.

It should be noted that, the setting of the beam parallel lens group in the present invention is not limited to the above embodiment, and it is only necessary to implement parallel CO2 laser beams; also, the arrangement of the beam splitting lens group is not limited to the above embodiment, for example, the beam splitting lens group may be a light blocking plate or a lens provided with a plurality of light holes, or a lens subjected to partial light blocking treatment, the non-light blocking part transmitting light, the light blocking part splitting the beam, and the beam splitting lens group splitting the parallel beam emitted from the beam parallel section 1 into a plurality of small parallel beams; theaperture part 3 is not limited to the above embodiment, and may be any part capable of adjusting the area of the light beam emitted therethrough. The relationship between the firstconvex lens 12 and the firstconcave lens 13 in the beam parallel lens group in the present invention is not limited to the above-described embodiment, and the firstconvex lens 13 may be disposed above the firstconcave lens 12, so that the CO2 laser beam emitted therefrom may be parallel. The relationship between thefirst lens 22 and thesecond lens 23 in the beam splitting lens group in the present invention is not limited to the above embodiment, and the present invention may alternatively dispose thefirst lens 22 below thesecond lens 23, so as to split the CO2 laser beams and make each split CO2 laser beam still be a parallel beam. The secondconvex lens 221 and the secondconcave lens 231 in the beam dividing lens group in the present invention may also be circular, and the energy loss is minimized when the shape is hexagonal; thefirst lens 22 and thesecond lens 23 in the beam splitting lens group can also be provided as pluggable lenses, namely, thefirst lens 22 also comprises a first clamping groove mirror frame, a plurality of first clamping openings are arranged on the first clamping groove mirror frame, and each second convex lens is respectively arranged on each first clamping opening; the second lens further comprises a second clamping groove mirror frame, a plurality of second bayonets are arranged on the second clamping groove mirror frame, and each second concave lens is respectively arranged on each second bayonet; the diameters of the secondconvex lens 221 and the secondconcave lens 231 can be made into various specifications for doctors to select, and can be made into three specifications of 2mm, 3mm or 4mm, and double-lens superposition of the three specifications can be used in an inserting way according to the requirements of the doctors.

The principles and embodiments of the present invention have been described in detail with reference to specific examples, which are provided to facilitate understanding of the method and core ideas of the present invention; also, it is within the scope of the present invention to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the invention.

Claims (7)

1. A CO2 laser treatment hand tool, characterized in that: the laser beam splitting device comprises a beam parallel part, a beam splitting part and a diaphragm part which are sequentially connected from top to bottom, wherein the beam parallel part comprises a first shell and a beam parallel lens group arranged in the first shell, and an incident laser beam is injected into the first shell and passes through the beam parallel lens group to form a parallel beam; the beam splitting part comprises a second shell and a beam splitting lens group arranged in the second shell, and the parallel beams emitted by the beam parallel part are emitted into the second shell and split into a plurality of parallel beams after passing through the beam splitting lens group; the diaphragm part comprises a third shell and an iris diaphragm arranged in the third shell, the iris diaphragm is used for adjusting the size of the area of the emitted light beam, and the first shell, the second shell and the third shell are sequentially connected and are opened at the upper end and the lower end;

the light beam parallel lens group is arranged on the inner wall of the first shell and comprises a first convex lens and a first concave lens which are vertically opposite and are arranged in parallel, and the first convex lens and the first concave lens are perpendicular to the axial direction of the first shell;

the beam splitting lens group is arranged on the inner wall of the second shell, the beam splitting lens group comprises a first lens and a second lens which are opposite up and down and are arranged in parallel, the first lens and the second lens are perpendicular to the axial direction of the second shell, the first lens comprises a plurality of second convex lenses, the second lens comprises a plurality of second concave lenses, the second convex lenses and the second concave lenses are correspondingly arranged in parallel up and down, and each second convex lens and each second concave lens are hexagonal lenses with the same size and the same number;

the iris diaphragm comprises a movable ring, a fixed ring and a plurality of diaphragm sheets, each diaphragm sheet is in a double circular arc shape, one end of each diaphragm sheet is provided with a fixed pin, the other end of each diaphragm sheet is provided with a movable pin, the movable ring is provided with a guide groove, the fixed ring is provided with an inserting hole, the fixed pins are rotationally assembled in the inserting hole, the movable pins are movably assembled in the guide groove and can translate along the guide groove, the movable ring is connected with a rotating handle, a rotating groove is formed in the third shell, and the rotating handle penetrates through the rotating groove and stretches out of the outer wall of the third shell.

2. The CO2 laser treatment hand piece of claim 1, wherein: the second convex lenses and the second concave lenses are respectively provided with 19-25, and the diameters of the second convex lenses and the second concave lenses are 2mm, 3mm or 4mm.

3. The CO2 laser treatment hand piece of claim 1, wherein: the plurality of second convex lenses are integrally formed to form the first lens, and the plurality of second concave lenses are integrally formed to form the second lens.

4. The CO2 laser treatment hand piece of claim 1, wherein: the first lens further comprises a first clamping groove mirror frame, a plurality of first bayonets are arranged on the first clamping groove mirror frame, and each second convex lens is respectively arranged on each first bayonet; the second lens further comprises a second clamping groove mirror frame, a plurality of second bayonets are arranged on the second clamping groove mirror frame, and each second concave lens is respectively arranged on each second bayonet.

5. The CO2 laser treatment hand piece of claim 1, wherein: the CO2 laser treatment hand tool further comprises a triangular fixed foot rest, and the upper end of the triangular fixed foot rest is connected with the lower end of the third shell.

6. The CO2 laser treatment hand piece of claim 5, wherein: the first shell upper end is in threaded connection with the laser outlet of the CO2 laser light guide arm, the first shell lower end is in threaded connection with the second shell upper end, the second shell lower end is in threaded connection with the third shell upper end, and the third shell lower end is in threaded connection with the triangular fixed foot rest upper end.

7. The CO2 laser treatment hand piece of claim 1, wherein: the diaphragm sheet of the iris diaphragm is an impermeable metal sheet, and a heat-proof layer is plated on the diaphragm sheet.

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