KR101505083B1 - Medical handpiece able to irradiate line laser beam - Google Patents

Abstract

The present invention relates to a medical handpiece for delivering a laser beam generated from a laser generating part to a affected part, and more particularly, to a medical handpiece for accurately irradiating a laser without a laser beam irradiated area or repeatedly irradiated area, An object of the present invention is to provide a medical handpiece capable of simultaneously achieving an increase in convenience of scanning and an improvement in treatment efficiency. Another object of the present invention is to provide a dental treatment handpiece capable of easily irradiating a laser beam to a portion between a tooth and a tooth, and efficiently irradiating a slightly curved tooth with a laser beam to improve treatment efficiency . According to an aspect of the present invention, there is provided a laser beam generating apparatus including a beam transformer for converting a laser beam output from a laser generating unit into a laser beam in a stripe shape and outputting the laser beam, The present invention provides a medical handpiece to which a line laser beam is irradiated.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to medical handpieces,

The present invention relates to a medical handpiece, and more particularly, to a medical handpiece capable of irradiating a laser beam in a line form in a medical device used for treatment of a body part in a medical field such as a dermatology, dentistry, Lt; / RTI >

Today, techniques for irradiating a laser beam to body parts such as skin or teeth have been studied for diagnosis and treatment in dermatology, dentistry, otorhinolaryngology and the like.

For example, a laser beam is used for hair loss prevention, hair growth promotion, skin peeling, skin regeneration, whitening, wrinkle removal, spots removal, dental treatment and so on. A variety of laser medical devices are being developed.

Generally, a laser medical device includes a handpiece for irradiating a laser beam to a body part, and the handpiece is used as a mechanism for transmitting a laser beam output from the laser generator to a body part.

Conventionally, a laser beam irradiated from a handpiece is a circular beam of a small diameter, and a technique of irradiating a circular laser beam in a spot shape on a body part is widely used.

In this process, a circular small laser beam is sparsely irradiated on the lesion using a handpiece. It is not easy for the surgeon to irradiate the laser beam at a constant speed and constant interval. Even if the laser beam is irradiated at a constant interval, Unexamined parts occur.

In addition, since the laser beam is continuously moved from the large area to the affected area, it requires a lot of effort by the user and the treatment time is long.

Furthermore, since the irradiation region is randomly moved in various directions during the treatment, the laser beam is not partially irradiated or the beam is irradiated to the same region several times (the laser beam is irradiated at the same position) Multiple shots), unnecessary repetition may result in damage to the skin tissue.

In the case of using for oral use, for example, a conventional dental laser handpiece to which a circular laser beam is irradiated, a laser beam is applied to a tooth portion (a portion between a tooth and a tooth) adjacent to another tooth, It is not easy to investigate and user complaints are being raised.
On the other hand, the following prior arts have been disclosed as a technology related to the present invention.
- Korean Unexamined Patent Publication No. 10-2009-0005072 (Published Jan. 12, 2009)
- Korean Unexamined Patent Application Publication No. 10-2004-0032936 (published Apr. 14, 2004)

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a medical handpiece capable of achieving accurate laser irradiation, user's effort reduction, shortening of treatment time, convenience of scanning, and improvement of treatment efficiency The purpose is to provide.

Another object of the present invention is to provide a dental treatment handpiece capable of easily irradiating a portion between a tooth and a tooth with a laser beam and efficiently irradiating a slightly bent tooth with a laser beam to maximize treatment efficiency will be.

In order to achieve the above object, the present invention provides a medical handpiece for irradiating a body part with a laser beam outputted from a laser generating part, characterized in that the laser beam output from the laser generating part is converted into a laser beam And a beam transformer for outputting a beam of laser beams output from the beam transformer is provided so that a laser beam in a strip shape output from the beam transformer can be irradiated to a body part.

In a preferred embodiment, the beam transformer includes a plurality of optical means disposed in the handpiece case forward and backward in the beam path so as to deform the laser beam introduced from the laser generating portion into a laser beam in a stripe form.

The beam transformer includes first optical means for transforming a circular laser beam introduced into the handpiece case into a laser beam in a line shape; And second optical means arranged on the rear side of the beam path of the first optical means for further modifying a stripe-shaped laser beam incident from the first optical means to adjust a beam width or a beam length .

The first optical means may be any one of a Powell lens, an array lens, and a cylindrical lens.

The first optical means is a slit member having a strip-shaped slit for passing the laser beam in a stripe shape.

The second optical means may be a cylindrical lens, a plano-convex lens, a rod lens, a plano-concave lens, a collimating lens, and a rod lens array).

Further, the beam transformer further includes third optical means disposed on the front side in the beam path of the first optical means for collecting a circular laser beam introduced into the handpiece case to cause the laser beam to be incident on the first optical means or incident as parallel rays .

The third optical means may be a PCX lens (plano-convex lens) or a collimating lens.

The handpiece case may include a case body having one side opened and a beam transformer housed therein; A cap provided at an opening of the case body and having a beam outlet for outputting a laser beam in a stripe shape output from the beam transformer to the outside; And adjusting means for adjusting the distance between the beam output portion of the beam transformer and the beam exit of the cap so that the cap can be moved in an assembled state in the opening portion of the case body.

In addition, the adjusting means is a thread formed in an opening of the cap and the case body, respectively, and the cap and the case body are coupled to each other by the thread, so that the cap and the case body can be moved as the cap is rotated.

The beam transformer is an optical fiber formed along a predetermined section of a long period grating and adapted to be incident on a core of a laser beam output from the laser generating section and emitting a laser beam incident on the core along a long period lattice section in a stripe form .

And a handpiece body for receiving the laser beam output from the laser generator and entering the optical fiber, wherein one end of the optical fiber is coupled to the handpiece body so as to extend outwardly.

And an end of the optical fiber through which the laser beam is incident from the handpiece body is connected to the beam output part of the handpiece body by a connector mechanism so that the optical fiber can be replaced.

Further, a handle that can be held by a user is provided on the other end of the optical fiber.

Accordingly, in the medical handpiece of the present invention, since the beam transformer for converting the laser beam output from the laser generator into the laser beam in the form of a line is provided, it is possible to use a line laser scanning system, It is possible to achieve an accurate laser irradiation without a region where no part is repeatedly irradiated, a reduction in user's effort and a shortening of a treatment time, an increase in convenience of scanning, and an improvement in treatment efficiency.

In addition, when a beam transformer using an optical fiber is applied, there is an advantage that a laser beam can be easily irradiated to a portion between a tooth and a tooth.

In addition, when a beam transformer using an optical fiber is applied, it has a flexibility to bend or rotate at a certain angle, so that there is an advantage that a laser beam can be easily irradiated to a curved body treatment area.

1 is a view illustrating a handpiece according to an embodiment of the present invention.
2 is a perspective view illustrating a state in which a line laser beam is irradiated on a handpiece according to an embodiment of the present invention.
3 is a view showing a configuration of a beam transformer mounted in the handpiece of the embodiment shown in FIG.
4 is a view showing various examples of handpieces having different shapes of caps according to the present invention.
5 is a view showing an example of a slit member usable as the first optical means.
6 is a view illustrating various types of line laser beams irradiated to a lesion portion through a beam transformer in the present invention.
7 is a view showing an embodiment in which a first optical means composed of a plurality of lenses is applied as another embodiment of the present invention.
Fig. 8 is an exemplary view showing a configuration in which two PCX lenses are combined as the first optical means in the embodiment of Fig. 7; Fig.
9 is a diagram showing an embodiment in which a C-type line laser beam is output as another embodiment of the present invention.
10 is a view showing still another embodiment of the present invention.
11 is a view illustrating a handpiece according to another embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art to which the present invention pertains.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a medical instrument including a handpiece for medical treatment and a handpiece for irradiating a laser beam. In particular, in order to solve the conventional problems, a laser beam To a medical handpiece.

As compared with the case of irradiating a circular laser beam, when the line laser beam is irradiated as in the present invention, it is possible to shorten the treatment time and improve the treatment efficiency, The beam irradiation part can be moved only in one direction, which is advantageous in that it is easy to use.

As in the case of the present invention, it is possible to improve the problem that the laser beam can be repeatedly irradiated to a portion or a portion where the laser beam is not irradiated, as compared with the case of irradiating a circular laser beam Since the beam irradiation part can be moved only in one direction, it can be advantageously used, and the treatment time can be shortened and the treatment efficiency can be increased.

Compared to a conventional handpiece in which a small circular beam is irradiated and scanned in both longitudinal and transverse directions, when the handpiece of the present invention is used, scanning is performed in only one direction while irradiating a line laser beam. (To reduce user's effort and increase convenience of scanning).

The medical hand piece of the present invention can be used to treat a lesion in various fields such as dermatology, dentistry, otolaryngology and the like when the size of the irradiated laser beam is variously adjusted (skin treatment, tooth treatment, etc.).

For example, it is possible to use a long line laser beam for treating the skin by using a long length of the laser beam, or to use a relatively short length of the laser beam for dental treatment, The laser beam can be irradiated with a thin laser beam (for example, having a beam width of several micrometers) between the teeth, so that the inner portion between the teeth can be treated with laser more easily.

FIG. 1 is a view showing a handpiece according to an embodiment of the present invention, and FIG. 2 is a perspective view illustrating a state in which a line laser beam is irradiated on a handpiece according to an embodiment of the present invention.

FIG. 1 shows a schematic outer shape of the handpiece 100 according to an embodiment. The outer shape of the handpiece can be variously modified by a gun type, a cylindrical type, a rectangular type, and the like. But the invention is not particularly limited thereto.

However, in an embodiment of the present invention, a beam outlet 104 through which a line laser beam is output is formed on one side of the case 101 of the handpiece 100, and a line laser beam output by a component inside the handpiece And can be irradiated to the affected part 1 such as external skin or teeth through the beam outlet 104.

In the handpiece 100 according to the present invention, a circular laser beam output from the laser generator 2 is received and converted into a laser beam (line laser beam) in the form of a line, Lt; / RTI >

That is, the handpiece 100 of the present invention includes a beam transformer that converts a laser beam output from the laser generation unit 2 into a laser beam in a stripe shape and outputs the laser beam. In one embodiment, And is mounted inside the case 101 of the handpiece 100.

1 and 2, the line laser beam output from the beam transformer mounted on the inside is irradiated to the affected part 1 by being output to the outside through the beam outlet 104 of the handpiece 100 .

The laser generator 2 may be a known laser oscillator including a laser medium and a cavity, and may include a laser diode module.

The laser generation unit 2 and the handpiece 100 may be directly connected to each other so that the circular laser beam output from the laser generation unit 2 is directly input to the beam transformer. It is preferable that the laser generating unit 2 and the handpiece 100 are connected to each other by a beam transmitting unit 3. [

In this case, the beam transmitting unit 3 may be constructed using an optical fiber for transmitting a laser beam, and an optical cable 3 using an optical fiber is connected between the laser generating unit 2 and the handpiece 100, The circular laser beam output from the laser unit 2 is transmitted to the beam transformer through the optical cable 3 and then converted into a laser beam to be output.

On the other hand, the beam transformer may be configured by arranging a plurality of optical means on the beam path back and forth so as to transform a circular laser beam into a stripe-shaped laser beam (line laser beam).

FIG. 3 is a view showing a configuration of a beam transformer mounted in the handpiece of the embodiment shown in FIG. 1, and a laser generating unit is not shown.

As shown in the figure, in the handpiece 100 of the embodiment, a beam transformer 110a for converting the shape of the laser beam into the inside of the case 101 is built in, and a circular laser beam outputted from the laser generating unit is inserted into the optical cable (The left end of the case in the drawing) of the handpiece 100 through the beam splitter 3 and is incident on the beam transformer 110a.

A beam exit 104 is formed at the other end of the handpiece 100. A beam of laser generated by the beam transformer 110a is incident on the beam exit 104 of the handpiece case 101, And is irradiated to the affected area 1.

The beam transformer 110a includes optical means 111, 112 and 113 respectively arranged at front and back positions on the beam path inside the case 101 of the handpiece 100. A circular laser beam introduced into the handpiece 100 is transmitted through the optical means So as to be converted into a laser beam in a line shape.

In a preferred embodiment, the beam transformer 110a includes a first optical means 111 for primarily deforming a circular laser beam introduced into the handpiece 100 into a laser beam in a stripe form, And a second optical means 112 disposed on the rear side of the beam path of the first optical means 111 and adapted to secondarily deform a stripe-shaped laser beam incident from the first optical means to adjust a beam width and a beam length in the lateral direction.

In addition, a third optical means 113 for transmitting a circular laser beam introduced into the handpiece 100 to the first optical means 111 is disposed at the front side of the beam path of the first optical means 111 .

The first optical means 111 may include a lens (a so-called 'line lens') capable of forming a circular beam into a beam of a line shape, for example, a Powell lens or an array lens lens, and a cylindrical lens.

It is also applicable to a configuration using a known lens or optical element capable of deforming a circular beam into a linear beam.

Further, the second optical means 112 disposed on the output side of the first optical means 111 can increase the length of the laser beam deformed in a line shape or reduce the beam width while passing through the first optical means, A cylindrical lens, a PCO lens (plano-convex lens), a rod lens (rod lens), etc., which can additionally process a line laser beam, ), A plano-concave lens (PCV), a collimating lens, or a rod lens array.

The third optical means 113 is an optical means for adjusting all the circular beams to be incident on the rear first optical means 111 without the beam loss as much as possible and is a circular laser The first optical means 111 may be arranged to collect the beams or to be incident on the first optical means 111 with parallel light, and may include a PCX lens or a collimating lens.

In this manner, the circular laser beam introduced into the handpiece 100 by the beam transformer 110a having the above-described configuration can be converted into a line laser beam and finally output through the beam outlet 104. As described above, In the configuration of the beam transformer 110a, as shown in FIG. 3A, a top-hat mode beam profile in which the power in the longitudinal direction is uniform in the finally output line laser beam (B). In addition, as shown in (b), it is preferable that the power can be deformed so as to have a Gaussian mode shape in the width direction.

The handpiece of the present invention can be applied to laser medical instruments of various fields because an appropriate lens can be selected and used according to the wavelength of the laser beam output from the laser generator.

3, the case 101 of the handpiece 100 includes a case body 102 having one side opened and a beam transformer 110a housed therein, And a cap 103 that is assembled with the cap 103.

The cap 103 is assembled on the side where the line laser beam is output, and a beam exit 104 for outputting a line laser beam to the outside is formed in the cap 103.

The beam output part of the beam transformer 110a housed in the case body 102 and the beam output part of the cap 103 (see FIG. 1), which are housed in the case body 102, And the beam exit 104 formed in the beam outlet 104 can be adjusted.

That is, when the cap 103 is rotated, the cap is moved back and forth in the case body 102, and the beam output of the beam transformer 110a housed in the case body 102 The distance between the beam outlets 104 of the cap can be made to be farther or closer to each other.

In this case, when the line laser beam in the beam transformer 110a is outputted in the form of diffused light extending in the longitudinal direction as shown in Fig. 3, the cap 103 is returned to the ring portion 1 through the beam outlet 104, The length of the line laser beam to be irradiated can be adjusted.

Since the cap and the beam exit cut off the beam so that only the beam passing through the beam outlet is blocked by the beam exit while blocking the end of the beam, the length of the beam irradiated to the ring is varied So that it can be adjusted.

The thread 103a of the cap 103 and the thread 102a of the case body 102 are coupled to each other so that the cap can be moved in the opening of the case body to allow the beam output of the beam transformer 110a and the cap The distance between the beam outlets 104 is adjusted.

In addition, the handpiece 100 of the present invention may include a plurality of replaceable caps 100 having different shapes of the laser beam output portion and the size of the beam outlet 104 depending on the laser treatment conditions in the dermatology, dentistry, otorhinolaryngology, (103-1, 103-2).

FIG. 4 shows various examples of handpieces having different shapes of caps. As shown in FIG. 4, the entire cap 103 on which a line laser beam is output or a tip (tip) And the length of the line laser beam may be varied due to the shape difference in the replaceable cap 103. [

Even if the replacement cap 103 has the same shape, the length of the line laser beam can be changed according to the size of the beam exit 104.

In the embodiment of the present invention, the width of the line laser beam irradiated to the lesion portion may vary depending on various conditions such as the configuration of the beam transformer, that is, the arrangement and specifications of the lens, The beam width (beam thickness) can be made from several tens of micrometers to several millimeters.

It is possible to configure such that the width of the line laser beam irradiated through the beam transformer is preferably in the range of 10 mu m to 3 mm at the lesion portion.

Accordingly, when the width of the line laser beam is largely adjusted, it is possible to achieve the same effect as irradiating a substantially planar laser beam to the lesion portion, and it is possible to irradiate the laser beam to the lesion portion having a large area easily and conveniently at the time of use.

FIG. 6 illustrates the shape of a line laser beam irradiated to a lesion portion through a beam transformer in an embodiment of the present invention. FIG. 6 (a) shows a case where a laser beam is irradiated substantially on a lesion portion when the width of the line laser beam is increased .

Also, in the embodiment of the present invention, a plurality of beam transformers may be provided. In this case, since a plurality of line laser beams can be continuously irradiated on the affected part in the width direction, (Multiple laser beams are combined to form a surface investigation).

Therefore, as compared with a system in which only one line laser beam is irradiated to the lesion portion to perform continuous movement scanning, a plurality of line laser beams can be simultaneously irradiated to neighboring portions, so that a laser beam can be more easily irradiated to a ring- do.

In order to achieve this, several beam transformers having the same configuration are arranged in the side of the handpiece, and the optical coupler, which splits the laser beam output from the laser generating unit and transmitted to the beam generating unit into a plurality of beams, And placed on the front side of the transformer.

In this case, the laser beam transmitted from the laser generating unit is divided into N beams by the 1: N optical coupler, and the divided beam is deformed into a line laser beam shape while passing through each beam transformer (N pieces) So that a plurality of line laser beams can be irradiated to the lesion portion in the width direction.

FIG. 6 (b) shows the shape of the laser beam irradiated to the lesion portion in the embodiment using a plurality of beam transformers, and shows a state in which a plurality of line laser beams are irradiated to neighboring portions of the lesion portion at the same time.

(a portion where a laser beam is not irradiated exists between the portions to which the circular beam is irradiated) in the case where a small circular laser beam is sparsely irradiated to the affected portion as shown in Fig. It can be seen that there is a clear advantage that the portion where the laser beam is not irradiated is minimized.

On the other hand, it is possible to use a slit member in which a line-shaped slit 111a is formed in the beam transformer 110a instead of the optical lens (line lens) described above as the first optical means 111, 5 is a view showing an example of a slit member usable as the first optical means 111. Fig.

As shown in the drawing, the slit member 111 has a structure in which a slit 111a is formed in the center so as to allow the beam to pass in a stripe shape. When such a slit member is used as the first optical means disposed on the beam path, The beam can be output as a beam in the shape of a line by the slit 111a.

That is, the slit member 111 is provided so as to selectively pass a part of the incident circular beam through the slit 111a, which blocks a part of the circular beam and selectively excites the beam only through the slit 111a And the circular beam can be processed into a beam in the form of a line by the slit member 111. [

At this time, a PCX lens, a cylinder lens, or the like for collecting the beams can be disposed by the second optical means 112 disposed on the output side of the slit member 111, or a rod lens, a PCV lens, a collimating lens, The array can be arranged so that a line-shaped beam image can be transmitted while collecting the line laser beam passed through the slit 111a.

On the other hand, the above-mentioned embodiment is an embodiment using one optical lens as the first optical means in the beam transformer, in which the optical lens of the first optical means itself can form a circular beam into a line- One line lens, that is, a well lens, an array lens, a cylinder lens, or the like can be used.

However, if a plurality of lenses arranged along the beam path have a combined configuration, in particular a configuration capable of producing a line laser beam using a plurality of lenses, this can also be adopted as the first optical means of the beam transformer in the present invention Do.

In this case, in the above description, a combination of the listed lenses may be adopted as an example that can be used as the second optical means, and optical means for arranging a plurality of lenses in front of and behind the beam path to form a beam in a line shape do.

Examples of the optical system include an optical system for producing a laser beam by arranging at least one kind of at least one or more kinds of lenses selected from among a cylinder lens, a PCX lens, a rod lens, a PCV lens, a collimating lens, Means can be constituted.

The combination of such a plurality of lenses may also be included in the scope of the first optical means described above because the circular beam can be made into a beam in the shape of a line. It will be referred to as a first optical means.

7 is a view showing an embodiment in which a first optical means is applied to a plurality of lenses. In this case, the first optical means 111 of the beam transformer 110a is arranged by arranging two lenses 111b and 111c in the front- As shown in Fig.

8 shows an example of a configuration in which two PCX lenses 111b and 111c are combined by the first optical means 111. As shown in FIG. 8, lenses of the same kind are arranged in different directions (that is, Or it is possible to constitute a first optical means capable of forming a laser beam to be arranged by arranging different kinds of lenses back and forth.

In FIG. 8, the two PCX lenses 111b and 111c constituting the first optical means 111 are shown to have the same size. However, the two lenses may be the same size or different size.

In this configuration, the second optical means 112 may have the same configuration as the second optical means of the embodiment of FIG. 3, and thus the first optical means 111 and the second optical means 112 in the embodiment of FIG. All can be made up of a cylinder lens, a PCX lens, a rod lens, a PCV lens, a collimating lens, and a rod lens array.

The lens of the second optical means 112 is disposed on the rear side of the beam path in the case 101 and the lenses 111b and 111c of the first optical means 111 are disposed on the front side of the second optical means.

At this time, when the positions of the lenses constituting the first optical means 111 and the second optical means 112 and the distances between the lenses are changed, the length of the line laser beams output from the handpiece may be different, The length of the line laser beam output from the handpiece can be adjusted according to the position where the lens on the output side of the lenses of the optical means, that is, the rear side lens 111c on the beam path, is placed.

In addition, in both of the embodiment of Fig. 3 and the embodiment of Fig. 7, only the lens located at the rear side (the output side of the handpiece) on the beam path, that is, the lens of the second optical means 112, Or the lens of the rear lens 111c and the lens of the second optical means 112 of the lenses of the first optical means 111 are fixed inside the cap 103 of the case 101 It is possible to adjust the distance between the front lens and the front lens so that the distance from the front lens can be adjusted. In this case, by adjusting the front and rear positions of the cap 103 in the case body 102, The length of the beam, and the like.

The present invention can be applied to the present invention as long as a plurality of combined lenses can make a line laser beam without using a single line lens in the means for making a line laser beam (first optical means) It is to be understood that the embodiments employed are also within the scope of the present invention.

3 and 7, it is also possible to construct the beam transformer of the handpiece by deleting the second optical means since the first optical means can make the line laser beam.

On the other hand, the handpiece according to the present invention may be such that the beam transformer outputs a slightly curved line-shaped laser beam which is not a straight line by the selection of lenses used in the respective optical means and various combinations thereof.

That is, the handpiece according to another embodiment of the present invention includes a beam transformer for outputting a bent curved line laser beam such as a C-shaped beam, and a curved treatment area such as a tooth In treatment, a curved beam of line laser beam may be more suitable.

FIGS. 3 to 7 show the shape of the line laser beam output from the handpiece in a straight line. FIG. 9 shows an embodiment in which a line laser beam of C type instead of a straight line is output. In the embodiment in which the beam transformer has the first, second and third optical means (111, 112, 113) constituting the beam transformer and outputs a curved line laser beam represented by the C type instead of the linear (straight line) Respectively.

In FIG. 9, since various combinations of lenses and optical means are possible, optical means are all shown in the same shape. However, as each optical means, a selected one of the lenses of the optical means mentioned above may be used, The optical means 111 may be a slit member having slits formed therein.

However, when the slit member is used as the first optical means 111, the shape of the slit in the slit member should be a curved shape such as a C shape instead of a straight shape (linear shape) illustrated in FIG.

In the embodiment of FIG. 9, the C type strip laser beam passing through the first optical means 111 is output after being deformed by the second optical means 112, May be used to adjust the beam length, or may be used to deform the beam shape itself in the case where the transmitted beam is C-shaped.

For example, when the size of the second optical means 112 is made smaller than a certain level in consideration of the size of the beam passing through the first optical means 111, the C-shape as shown in FIG. 9 (a) The beam can be outputted. On the contrary, when the size of the second optical means is made larger than a certain level, the C-shaped beam having the opposite shape as shown in (b) can be outputted.

As described above, the shape of the C-type beam can be changed according to the size of the beam passing through the first optical means and incident on the second optical means, the size of the second optical means, etc., and the output of the desired C- An appropriate size of the beam and the second optical means incident on the second optical means from the first optical means needs to be selected.

Next, FIG. 10 shows another embodiment of the present invention, which shows a different embodiment of the construction of a beam transformer made up of optical means packaged in a case of a handpiece.

In the embodiment of FIG. 10, a slit member 121 for making the beam finally output to the beam output part, which is the rearmost part on the beam path in the case (not shown) of the handpiece, .

Since the size and shape of the final output beam are determined by the slit 121a, the size and shape of the slit 121a are not limited to the shape of the slit 121a, It is designed considering the size and shape of the beam to be irradiated to the treatment site.

10 shows a perspective view of the slit member 121. Referring to FIG. 10, the shape of the C-shaped slit 121a formed in the slit member 121 can be seen. In the embodiment of FIG. 10, ) Is disposed on the most rear side in the handpiece case instead of the second optical means.

10, when the first optical means 111 for changing the size and shape of the circular beam transmitted through the third optical means 113 is arranged on the beam path A slit member 113 is disposed on the rear side of the third optical means 113, and a beam passing through the first optical means 113 is formed into a curved shape, that is, a C- (121).

The third optical means 113 for transmitting a circular laser beam introduced into the handpiece case may be a PCX lens or a collimating lens as in the embodiment of FIGS. 3 to 9, Is the same as the third optical means of the embodiment.

Further, the first optical means 111 may be the same as the configuration applied to the embodiment of FIG. 3 or 7, and the circular optical beam transmitted through the third optical means 113 may be transformed into a linear line laser beam To the slit member (121).

10 shows an embodiment in which a first optical means 111 in which a plurality of lenses 111b and 111c are combined is used as in the embodiment of Fig. 7, and a plurality of lenses 111b And 111c, and the slit member 121 finally deforms the beam into a C-shaped beam and outputs the linear beam.

At this time, the linear beam output from the first optical means 111 must be able to be deformed into a C-shaped beam by a method in which only a part thereof passes through the slit 121a of the slit member 121 and the rest is blocked , It should have a sufficient width so that it can be processed into a C-shaped beam.

In the embodiment of FIG. 10, since the final C-shaped beam shape is formed by the slit member 121 on the rearmost side in the beam path, the third optical means 113 is provided between the third optical means 113 and the slit member 121, It is also possible to dispose a single cylinder lens, a PCX lens, a rod lens, a PCV lens, a collimating lens, or a rod lens array instead of the first optical means made up of a plurality of lenses or the first optical means shown in Fig. (Application of the lens used as the second optical means in the embodiment of Fig. 3).

Of course, if it is desired to obtain a straight beam instead of a C beam in the shape of the beam finally output from the handpiece, it is also possible to use a cylindrical lens, a PCX lens, a rod lens, a PCV lens, a collimating lens, A slit member having a straight slit as illustrated in Fig. 5 may be used.

In the embodiment of FIG. 10, when the plurality of lenses 111b and 111c are used as the first optical means 111, the length of the 'C' shaped beam can be adjusted when adjusting the distance between the front and rear lenses, It is possible to output the shape of the C-shaped beam in the opposite direction according to the direction of the slit member 121, as exemplified by (a) and (b)

10 can be manufactured by freely changing the shape of the slit 121a formed in the slit member 121, so that the shape of the finally output line laser beam can be variously changed to a shape more suitable for a treatment site .

Next, another embodiment in which the configuration of the beam transformer is changed will be described.

11 is a view illustrating a handpiece according to another embodiment of the present invention. In the illustrated embodiment, the handpiece 100 includes a beam transformer 110b that is exposed to the outside.

That is, the handpiece 100 includes a handpiece body 105 and a beam transformer 110b formed by optically coupling the optical fiber 114 to the handpiece body 105 so as to extend outwardly from the handpiece body 105, .

The handpiece body 105 serves to output and enter the laser beam transmitted from the laser generation unit to the optical fiber 114 and serves as a handle that the user can hold by hand and an end of the optical fiber 114 And serves as a supporting body for supporting.

Also, as the optical fiber 114 of the beam transformer 110b, an optical fiber in which long-period gratings 115a are formed in a predetermined interval is used.

The long period grating 115a is formed by arranging layers having different refractive indexes periodically in the longitudinal direction of the optical fiber 114 in a portion of the core 115 through which the light passes and is applied to a sensor system such as an optical communication system or a pressure sensor .

In the optical fiber 114, when the incident light meets the long period grating 115a, the optical fiber 114 couples with the cladding layer 116 surrounding the core 115 and goes out of the cladding layer.

Therefore, when the jacket layer 117 surrounding the cladding layer 116 of the optical fiber 114 is peeled off, light is emitted outward by the length of the long period grating 115a, and the laser beam is emitted in the longitudinal direction of the optical fiber have.

When one end of the optical fiber 114 having the long period grating 115a formed therein is optically coupled to the handpiece body 105 so that the laser beam transmitted from the laser generation unit can be incident on the core 115, Another type of beam transformer 110b capable of being deformed and output by a line laser beam can be constructed (emitting a long laser beam along a long period lattice section).

As a result, the beam transformer 110b that emits the laser beam can be constructed by removing the jacket layer 117 of a predetermined interval in the optical fiber 114 so that the portion where the long period grating 115a is formed is exposed, In the case of the handpiece 100 having the beam transformer 110b composed of the optical fiber 114 of one nature, the ring can be usefully used for treating a long and curved portion including a dental field such as a treatment .

The user holds the handpiece body 105 with one hand while holding the end of the optical fiber 114 with the opposite hand and uses the handpiece body with the other hand so that the user can hold the other end of the optical fiber 114 A handle 118 may be provided.

It is also preferable that one end of the optical fiber is detachably connected to the handpiece body 105 through the optical fiber connector mechanism 119 so that the optical fiber 114 can be replaced when necessary.

At this time, since the laser beam of a predetermined wavelength outputted from the laser generating unit is transmitted through the optical fiber of the beam-transmitting unit 3, the optical fiber 114 having the long-period grating 115a uses the same optical fiber as the optical fiber of the beam transmitting unit desirable.

The hand piece of the present invention capable of irradiating a line laser beam has been described with various embodiments, and the scope of the present invention is not limited to the above-described embodiments, Various modifications and improvements of those skilled in the art using the basic concept of the present invention are also included in the scope of the present invention.

1: red part 2: laser generating part
3: Optical cable (beam delivery unit) 100: Handpiece
101: Case 102: Case body
102a: thread 103: cap
103a: threads 103-1, 103-2: replacement cap
104: beam outlet 105: handpiece body
110a: beam transformer 110b: beam transformer
111: first optical means 111a: slit
111b, 111c: lens 112: second optical means
113: third optical means 114: optical fiber
115: core 115a: long period grating
116: cladding layer 117: jacket layer
118: handle 119: connector mechanism
121: Slit member 121a: Slit

Claims (31)

delete A medical handpiece for irradiating a body part with a laser beam outputted from a laser generating part,
And a beam transformer for converting the laser beam output from the laser generator into a laser beam in a stripe shape and outputting the laser beam so that the laser beam can be irradiated onto a body part,
Characterized in that the beam transformer includes a plurality of optical means arranged in front of and behind the beam path in the handpiece case so as to deform the laser beam introduced from the laser generating portion into a laser beam in the shape of a stripe. Hand piece.
The method of claim 2,
The beam transformer
First optical means for deforming a circular laser beam introduced into the handpiece case into a laser beam in a line shape;
Second optical means arranged on the rear side of the beam path of the first optical means for further modifying a stripe-shaped laser beam incident from the first optical means to adjust a beam width or a beam length;
Wherein the line laser beam is irradiated.
The method of claim 3,
Wherein the first optical means is any one of a Powell lens, an array lens, and a cylindrical lens.
The method of claim 3,
Wherein the first optical means is a slit member formed with a strip-shaped slit so as to pass the laser beam in a stripe shape.
The method of claim 3,
The second optical means may be a cylindrical lens, a plano-convex lens, a rod lens, a plano-concave lens, a collimating lens, a rod lens array ), Wherein the line laser beam is irradiated.
The method of claim 3,
The beam transformer further includes a third optical means disposed on the front side of the beam path of the first optical means for collecting a circular laser beam introduced into the handpiece case to cause the laser beam to be incident on the first optical means or incident as parallel rays Wherein the line laser beam is irradiated.
The method of claim 7,
Wherein the third optical means is a PCX lens (plano-convex lens) or a collimating lens.
The method according to claim 2 or 3,
And a line laser beam output through the beam transformer is irradiated at a body part with a beam width of 10 탆 to 3 mm.
The method according to claim 2 or 3,
A plurality of beam transformers arranged side by side and an optical coupler for dividing the laser beam transmitted from the laser generating unit and causing the divided beam to enter each beam transformer, So that the beam can be simultaneously irradiated to a neighboring part of the body in the width direction.
The method of claim 2,
The handpiece case
A case body having one side thereof opened and in which a beam transformer is housed;
A cap provided at an opening of the case body and having a beam outlet for outputting a laser beam in a stripe shape output from the beam transformer to the outside;
Adjusting means for adjusting the distance between the beam output part of the beam transformer and the beam exit of the cap so that the cap can be moved in an assembled state in the opening of the case body;
Wherein the line laser beam is irradiated.
The method of claim 11,
Wherein the adjusting means is a thread formed in an opening of the cap and the case main body, and the cap and the case main body are mutually coupled by the thread to be movable as the cap is rotated. Hand piece.
The method according to claim 11 or 12,
Wherein the plurality of replacement caps are provided with a plurality of replacement caps which are different in shape of a portion to which a line laser beam is finally output depending on a laser treatment condition or a region to be laser irradiated and a beam exit size.
The method of claim 2,
The beam transformer
Wherein the long-period grating is formed along a predetermined section and the laser beam output from the laser generator is incident on the core, and the optical fiber is an optical fiber that emits a laser beam incident on the core in a strip shape along a long- A medical handpiece to which the beam is irradiated.
15. The method of claim 14,
And a handpiece main body for receiving the laser beam output from the laser generator and entering the optical fiber into the optical fiber, wherein one end of the optical fiber is coupled to the handpiece body so as to extend outwardly. Medical handpiece.
16. The method of claim 15,
Wherein one end of the optical fiber through which the laser beam is incident from the handpiece body is connected to the beam output portion of the handpiece body so as to be detachably attached to the handpiece body so that the optical fiber can be replaced. .
The method according to claim 15 or 16,
Wherein a handle capable of being held by a user is installed on the other end of the optical fiber.
The method of claim 3,
Wherein the first optical means is constituted by arranging a plurality of lenses on the beam path back and forth.
19. The method of claim 18,
The first optical means may be a cylindrical lens, a plano-convex lens, a rod lens, a plano-concave lens, a collimating lens, and a rod lens array. And a plurality of at least two lenses selected from the group consisting of a plurality of lenses selected from the group consisting of a plurality of lenses.
The method of claim 11,
A lens positioned on the rear side of the beam path among all the lenses constituting the optical means of the beam transformer is installed in the cap and the distance between the rear lens and the front lens provided in the case body is Wherein the line laser beam is illuminated.
The method according to claim 3 or 4,
Wherein the first optical means is a lens for transforming a circular laser beam into a linear laser beam in a line form or a curved laser beam typified by a C-type laser beam.
23. The method of claim 21,
In the case where the first optical means is a lens outputting a C type laser beam and outputting the laser beam, the second optical means changes the size of the laser beam incident on the second optical means from the first optical means to the size of the second optical means And the shape of the output C-type beam is determined.
The method of claim 5,
Wherein the slit member is formed so that the slit has a curved shape typified by a linear shape or a C shape.
The method of claim 2,
The beam transformer
First optical means for deforming a circular laser beam introduced into the handpiece case into a laser beam in a line shape;
A slit member which is disposed on the rear side of the beam path of the first optical means and through which only a part of the laser beam incident on the first optical means passes through the slit to further deform the laser beam;
Wherein the line laser beam is irradiated.
27. The method of claim 24,
Wherein the first optical means is any one of a Powell lens, an array lens, and a cylindrical lens.
27. The method of claim 24,
Wherein the first optical means is a slit member formed with a strip-shaped slit so as to pass the laser beam in a stripe shape.
27. The method of claim 24,
The beam transformer further includes a third optical means disposed on the front side of the beam path of the first optical means for collecting a circular laser beam introduced into the handpiece case to cause the laser beam to be incident on the first optical means or incident as parallel rays Wherein the line laser beam is irradiated.
28. The method of claim 27,
Wherein the third optical means is a PCX lens (plano-convex lens) or a collimating lens.
27. The method of claim 24,
Wherein the first optical means is constituted by arranging a plurality of lenses on the beam path back and forth.
29. The method of claim 29,
The first optical means may be a cylindrical lens, a plano-convex lens, a rod lens, a plano-concave lens, a collimating lens, and a rod lens array And a plurality of at least two lenses selected from the group consisting of a plurality of lenses arranged in a line.
27. The method of claim 24,
Wherein the slit member is formed so that the slit has a curved shape typified by a linear shape or a C shape.

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