JP2884382B2 - Medical laser equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laser device, and more particularly to a medical laser device for irradiating a living tissue with laser light for medical use.

[0002]

2. Description of the Related Art Various types of laser devices for emitting laser light are already known. One of them is Nd: YA
There is a G laser device. This Nd: YAG laser device emits laser light having an oscillation wavelength of 1.06 μm. Nd: Y
Since the AG laser device emits a laser beam having a relatively short wavelength, a quartz fiber having high mechanical strength is used as a light guiding unit for guiding the laser beam emitted from the Nd: YAG laser device. Such a laser device,
It is used as a medical laser device as shown in FIG. The medical laser device shown in FIG. 2 has a laser main body 1 and a light guide path 2 made of quartz fiber for guiding laser light.
And a support column 3 made of a rigid member protruding upward from the laser main body 1. Such a medical laser device is disclosed in, for example, Japanese Utility Model Laid-Open No. 61-148313.

As another laser device, there is a CO ₂ laser device. The CO ₂ laser device emits laser light having an oscillation wavelength of 10.6 μm. Since the CO ₂ laser device is a long-wavelength light source that emits laser light of a relatively long wavelength, the above-described quartz fiber cannot be used as a light guiding fiber for the CO ₂ laser device. Therefore, a fiber using thallium bromide or the like is used as the light guide fiber for the CO ₂ laser device. Since the material of the light guide fiber for a CO ₂ laser device is fragile, and it is necessary to transmit a large power, irradiation of unnecessary laser light to the outside due to breakage of the fiber is never permitted. Therefore, the light guide fiber for the CO ₂ laser device needs to be provided with various safety devices such as installing a metal outer tube for preventing unnecessary laser light from leaking to the outside when the fiber is broken. . Furthermore, juxtaposed cooling air pipe for cooling the CO ₂ laser device for guiding optical fibers into CO ₂ laser device for guiding optical fibers, it is necessary to accommodate these in such metallic outer tube. For this reason, the light guide means for the CO ₂ laser device is light in weight for its thickness, but has poor flexibility and a large minimum radius of curvature. Therefore, when the operator of the CO ₂ laser apparatus carries out the treatment operation by holding the treatment instrument (hand piece) connected to the distal end of the light guide means, a large load is applied to the operator's hand, and the operator is fatigued. In addition to this, there is a disadvantage that the operability of the treatment instrument is poor.

In order to eliminate such disadvantages, Japanese Utility Model Publication No. Sho 62
A medical laser device as shown in FIG. 3 and disclosed in Japanese Patent No. 14823 is proposed. The medical laser device shown in FIG. The housing 4 is a control device (not shown)
The operation box 5 is connected to the upper part, and the foot switch 6 is connected to the lower part. The control device in the housing 4 controls the cylindrical laser generator 7, and the laser generator 7 includes a laser generator tube (not shown) inside. The laser generator 7 is supported at the upper end of a vertically movable column 8 erected on the upper surface of the housing 4 via a mounting member 9 so as to be tiltable. Control device and laser generator 7 in housing 4
The inside of the column is electrically connected to a laser generating tube by a high-voltage cable or the like (not shown) provided in the column 8. The laser light generated from the laser generator 7 is guided to the tip by the light guide fiber 10. Light guide fiber 10
Consists of an optical fiber bundle of thallium bromide for transmitting laser light. At the tip of the light guide fiber 10 is a laser treatment instrument 11
Is connected. The proximal end of the light guide fiber 10 is connected to the distal end of the light guide system of the laser generator 7. A cooling air pipe (not shown) and the like are provided around the light guide fiber 10 as in the related art. In order to support the light guide fiber 10, a support rod 12 protrudes in parallel from the front end of the laser generator 7 along the light guide fiber 10. The support rod 12 is made of a plate-like or shaft-like elastic material, and has a shorter length than the light guide fiber 10. The light guide fiber 10 is
Loop-shaped support pieces 1 at a plurality of positions with respect to the support rod 12
3 is suspended and supported.

[0005] When performing a dental treatment operation using the medical laser device configured as described above, the light guide fiber 10 is used.
Is held by the elastic force of the support rod 12 to effectively protect the light guide fiber 10 from breaking at the root. Also,
The laser treatment apparatus configured as described above reduces the load on the operator's hand when holding the laser treatment instrument 11 and reduces the degree of fatigue, and also has good operability.

[0006]

However, the medical laser device having the rigid support column 3 as a support member as shown in FIG. 2 was sufficiently effective in operability stability. When a fragile fiber material such as a compound fiber is used, it is insufficient to protect the optical fiber, for example, the optical fiber is locally bent and breaks.

In the medical laser device shown in FIG. 3, the light guide fiber 10 is attached to the support rod 12 made of an elastic material so as to extend along the projecting direction. As shown, when the medical laser device is actually used, in order to irradiate a laser beam to an irradiated portion, the light guide fiber 10 is set in an initial state (no reference position) with no load.
Therefore, it is necessary to use the elastic support rod 12 in a greatly bent state. For this reason, the load on the operator's hand from the elastic support rod 12 increases, so that stability in operation deteriorates,
The degree of operator fatigue also increases. Further, the light guide fiber 1
Since the support rod 12 is held by the support rod 12 so as to project toward the front of the housing 4, there is a risk that the light guide fiber 10 may be erroneously hooked and damaged during non-treatment.

Accordingly, it is an object of the present invention to provide a medical laser device capable of bringing a treatment instrument attached to the tip of a light guide means to a site to be irradiated with a very small load.

Another object of the present invention is to provide a medical laser device capable of preventing the optical fiber from being locally bent and broken beyond the breaking limit.

[0010] Still another object of the present invention is to provide a medical laser capable of returning the light guide means to an initial position where the light guide means is held without protruding from the apparatus during non-treatment, and storing the light guide means in a good condition. It is to provide a device.

[0011]

A medical laser device according to a first aspect of the present invention includes a laser light source provided in a housing, and a laser emitted from the laser light source provided to protrude from the housing. In a medical laser device including a light guide unit including an optical fiber that guides light to an irradiation target, and a support bar erected on a housing and supporting the light guide unit, the support bar includes a light guide unit. In accordance with the above, a plurality of connecting rods connected flexibly via a bending member, and a predetermined connecting rod of the plurality of connecting rods, when an external force is applied to the light guide means, the base end side thereof Means for applying a return force to return the support rod to the initial position by rotating about the bending member.

In the medical laser apparatus according to the first aspect, the supporting rod may further include a connecting rod provided in front of the connecting rod when the light guiding means is extended so as to extend the connecting rod. It is preferable to include a means for applying a force to stretch the rod.

A medical laser device according to a second aspect of the present invention comprises a laser light source provided in a housing, and a laser beam provided so as to protrude from the housing and emitted from the laser light source to an object to be irradiated. In a medical laser device including a light guide unit including an optical fiber for guiding light and a rigid support member erected on a housing and supporting the light guide unit, the rigid support member includes a light guide unit on the housing. A rigid support column erected along the direction of extension of the rigid support column, a rigid support pole connected to a tip of the rigid support column at a position away from one end by a predetermined distance, and rotatably around a rotation axis; A balance weight fixed to one end of the rigid support rod, an elastic holder provided at the other end of the rigid support rod for elastically holding the light guide means, and a substantially intermediate position between the elastic holder and the rotation shaft. A holder provided on the rigid support rod for holding the light guide means; And wherein the Rukoto.

In the medical laser device according to the second aspect, it is preferable that the elastic holder is attached to the other end of the rigid support rod via a support spring. Further, it is desirable that the rotating shaft communicates with a long hole formed in the rigid support rod. Further, it is preferable that a stopper that defines the horizontal position of the rigid support rod when the rigid support rod is tilted in the horizontal direction is attached to the rigid support column.

[0015]

According to the structure of the first aspect, as the support rod for supporting the light guide means, a connecting rod composed of a plurality of rigid bodies connected to bendable via a bending member is used. At least the connecting rod on the distal end side of the connecting rod is configured to rotate around the bending member on the proximal end side and to store a return force for returning to the initial position, so that the light guide means can be extremely operated in operating the treatment instrument. It is possible to bring it to the irradiated area with a small load. Therefore, the load (weight) on the operator can be reduced, and the stability of the operation can be improved. Also,
When an optical fiber having low mechanical strength, such as a fluoride fiber, is used as the optical fiber in the light guiding means, it is possible to prevent the optical fiber from being locally bent and broken beyond its breaking limit. Further, during non-treatment, the support rod is configured to return to the initial position where the support rod and the light guide are held in a state where they do not protrude from the apparatus, so that the light guide can be stored in a good state.

According to the configuration of the second aspect, the rigid support member for supporting the light guide means includes a rigid support column,
A rigid support rod rotatably connected to the distal end thereof, a balance weight fixed to one end of the rigid support rod, and an elastic holder for elastically holding the light guide means at the other end of the rigid support rod. Since the elastic holding tool and the holding tool that holds the light guide means with a rigid support rod at a substantially intermediate position between the rotation shaft and the rotating shaft are used, during treatment, it is attempted to pull the treatment instrument back to the housing side. Little force is applied, and operational stress on the operator's wrist can be reduced. In addition, during non-treatment, since the rigid support rod stands upright along the rigid support column, the light guide means can be retreated to a position where it does not obstruct the operator.

[0017]

Next, embodiments of the present invention will be described with reference to the drawings.

Referring to FIG. 1, a medical laser device according to a first embodiment of the present invention is a dental laser device,
It has a light guide means 14, a handpiece 15, a housing 16, an operation panel board 17, a foot switch 18, and a support rod 20 according to the present invention.

The housing 16 includes a laser light source (not shown),
The laser light emitted from the laser light source is transmitted to the light guide 14.
And a reflecting mirror (not shown) for guiding the light to the camera. The laser light source includes, for example, an erbium-doped laser medium (not shown) that emits Er: YAG laser light having a wavelength of 2.94 μm, an excitation flash lamp (not shown) for exciting this laser medium, Reflecting mirror (not shown), resonant mirror (not shown), and laser power supply (not shown) for supplying power to the excitation flash lamp
And a laser cooler (not shown) for cooling the laser medium.

A water supply / air supply system (not shown) is further incorporated in the housing 16. This water supply / air supply system cools dry air for keeping an optical fiber (not shown) incorporated in the light guide means 14 in a dry state, and cools a base end and a tip end of the light guide means 14. And air for cooling the treatment site, and water for cooling the treatment site. The housing 16 has a built-in control device (not shown) for controlling the operation of the above-described device.

An operation panel board 17 is fixed on the housing 16. The operation panel board 17 is provided with switches (not shown) for inputting the laser oscillation conditions of the laser light source. A handpiece holder 24 for holding the handpiece 15 attached to the tip of the light guide means 14 during non-treatment is fixed beside the operation panel board 17. The handpiece 15 is a laser treatment instrument for directing a laser beam guided through an optical fiber to an affected part.

A foot switch 18 is connected to a lower portion of the front surface of the housing 16. When the operator steps on the foot switch 18 with his / her foot, laser light can be emitted from the tip of the handpiece 15.

At the center of the upper part of the housing 16, the terminal of the light guide system built in the housing 16 and the base end of the optical fiber built in the light guide 14 are optically connected. . The light guide means 14 is attached so as to protrude upward from the housing 16.

The light guide 14 has a fluoride fiber (not shown) and three vinyl tubes (not shown). The fluoride fiber of this embodiment has a wavelength of 2.94.
The core diameter is 450μ to guide the laser light of μm.
m, a fiber made of aluminum-zirconium-based fluoride glass having a cladding diameter of 500 μm. The minimum bending radius of the fluoride fiber itself is 20 mm. This fluoride fiber is covered with a resin protective jacket around the clad in order to prevent damage due to external scratches, and is further covered with a slenderness tube (not shown) having a small diameter. Three vinyl tubes are used for drying / cooling air from the water / air supply system,
It is for supplying cooling water to the base end and the front end of the fluoride fiber, respectively, and is juxtaposed with the fluoride fiber covered by the Slentes tube. The stainless steel tube and the three vinyl tubes are covered with a Teflon tube (not shown), which is elastic enough to keep the fluoride fiber from bending below 60 mm for safety against its minimum bending radius. have. In addition, a handpiece 15 that is held when the operator performs an operation is connected to the tip of the light guide unit 14.

The light guiding means 14 is supported by a support rod 20 according to the present invention as described below. Support rod 20
Are three connecting rods 21a, 21b, 21 made of a rigid body.
c and the bent connecting portions 22a, 22b connecting these connecting rods.
22b. Connecting rods 21a, 21b,
A structure via an elastic member, which will be described in detail later, is incorporated in the bending connection portion 21c and the bending connection portions 22a and 22b. The structure returns to the initial position (reference position), which is the state of the support bar 20 to which no load is applied during non-treatment, as shown in FIG. FIG. 1A shows an example of the state of the support bar 20 during treatment.

Referring to FIG. 5 in addition to FIG. 1, the light guide means 14 is connected to the connecting rod 21a by a connecting holder 23a made of a rigid body shown in FIG. In this case, the light guide means 14 is fixedly supported in a protruding direction at a distance of about 6 cm. The light guiding means 14 is connected to the connecting rod 21.
FIG. 5B shows a connecting holder 23 made of a rigid body shown in FIG.
b, an appropriate distance range (about 3 to 1 in this embodiment).
0 cm) and is movably held. further,
The light guide means 14 is held on the connecting rod 21c by a connecting holder 23c made of an elastic body shown in FIG. 5C so that the light guide means 14 can be moved within an appropriate range.
The connection holder 23c of the present embodiment includes an elastic body 23ca using a spring, a support-side mounting member 23cb that is connected to one end of the elastic body 23ca to attach the connecting rod 21c, and that is connected to the other end of the elastic body 23ca. A light guide side mounting member 23 cc for mounting the light guide means 14 is provided. here,
The connecting rod 21c and the light guiding means 14 are fixed to the support-side mounting member 23cb and the light-guiding side mounting member 23cc, respectively, by fastening screws (not shown).

The components and the connecting holders constituting the support rod 20 are designed so that the fluoride fiber used for the light guide means 14 will not be broken by the minimum bending radius of 20 mm or less. ing. In this embodiment, for example, the connecting rod 21 is connected to the light guiding means 14 having a total length of 2.3 m.
a, 21b, 21c each have a length of 50 cm, 40 c
m and 30 cm.

Next, referring to FIGS. 6 and 7, the connecting rods 21a, 21b, 21c and the bending connecting parts 22a, 22 are used to return the rotation of each bending connecting part to the initial position.
The structure via the elastic member incorporated in b will be described. FIGS. 6A and 6B are configuration diagrams of the support bar 20 at the time of non-treatment when viewed from the front and the lateral direction, respectively. FIGS. 7A and 7B are diagrams illustrating the support bar 20 at the time of treatment, respectively. FIG. 2 is a configuration diagram when viewed from the front and side directions.

An elastic body 21ab is incorporated in the connecting rod 21a, and one end of the elastic body 21ab is fixed to the base (not shown) of the connecting rod 21a, and the other end is fixed to the bent connecting part 22a as described later. Have been. Similarly, an elastic body 21bb is incorporated in the connecting rod 21b, and one end of the elastic body 21bb is fixed to the bent connecting part 22a as described later, and the other end is fixed to the bent connecting part 22b as described later. . Each of the elastic body 21ab and the elastic body 21bb is made of, for example, a spring.

The bent connecting portion 22a is provided for enabling a concentric rotation of the disk portion 22aa fixed to the connecting rod 21a, the disk portion 22ab fixed to the connecting rod 21b, and the disk portion 22aa and the disk portion 22ab. In order to fix the rotating shaft 22ac and the other end of the elastic body 21ab, the disk portion 22ab
Metal fittings 22ad attached to the elastic body 2
In order to fix one end of 1bb, a fixing bracket 22ae attached to the disc portion 22aa and a disc portion 22aa in order to regulate the rotation angle of the connecting rod 21b with respect to the connecting rod 21a in a range of, for example, 0 to 60 °. It is composed of a rotation regulating shaft 22af attached and a rotation regulating groove 22ag formed in the disk portion 22ab.

Similarly, the bending connecting portion 22b is connected to the connecting rod 21.
b, the disk portion 22bb fixed to the connecting rod 21c, the disk portion 22ba and the disk portion 22
rotating shaft 22bc for enabling concentric rotation with bb
In order to fix the other end of the elastic body 21bb, a fixing bracket 22bd attached to the disk portion 22bb and a rotation angle of the connecting rod 21c with respect to the connecting rod 21b are set to, for example, 0.
The rotation defining shaft 22be and the disk portion 22b attached to the disk portion 22ba to define the rotation angle in the range of up to 60 °.
b and the rotation regulating groove 22bf provided in the groove b.

As shown in FIGS. 6A and 6B, at the time of non-treatment, the elastic body 21ab passes through the fixing bracket 22ad attached to the disk portion 22ab and the rotating shaft 22a.
The connecting rod 21b is assembled inside the connecting rod 21a so as to pull the connecting rod 21b around c so as to have a tension that causes the connecting rod 21b to stand up against the connecting rod 21a. Further, the elastic body 21bb is incorporated in the connecting rod 21b so that no tension acts when the connecting rod 21b at the time of non-treatment stands up. By configuring the components of the support rod 20 in this manner, during non-treatment, as shown in FIG. 1A, the connecting rod 21b stands upright with respect to the connecting rod 21a, and further connects with the connecting rod 21b. 21c is a rotation defining shaft 22
be and the rotation determining groove 22bf.

On the other hand, as shown in FIGS. 7A and 7B, at the time of treatment, the operator pulls the light guide means 14 so that the connecting rod 21b rotates and tilts with respect to the connecting rod 21a.
As a result, tension is generated in the elastic body 21bb, and the connecting rod 21c rotates in a direction to stand with respect to the connecting rod 21b. As a result, during treatment, for example, the shape of the support rod 20 as shown in FIG. 1A is obtained. In addition, in the state shown in FIG. 1A, the elastic body 21ab is in a state of being tensioned. Therefore, when the operator weakens the pulling force of the light guide means 14, the support rod 20 is automatically turned into the state shown in FIG. It returns to the initial position at the time of non-treatment shown in (a). That is, with the above structure, the rotation of each bending connection portion can be returned to the initial position.

According to the above-described configuration, the connecting rod 2 is used during treatment.
1b is bent with respect to the connecting rod 21a.
Since 1c stands against the connecting rod 21b, FIG.
According to the principle of leverage as shown in (B), since the length of the connecting rod portion on which the operator applies a load becomes longer, the pulling force can be further reduced.

Therefore, the first embodiment has the following effects. It is possible to bring it to the irradiated portion with a very small load. Therefore, the load (load) on the operator can be reduced, and the stability of the operation can be improved. Further, in an optical fiber having a low mechanical strength, such as a fluoride fiber, it is possible to prevent the optical fiber from being locally bent and broken beyond its breaking limit. Further, at the time of non-treatment, since the support rod 20 is configured to return to the initial position where the support rod 20 and the light guide means 14 are held without protruding from the apparatus, the light guide means 14 can be moved in a good state. Can be stored. Therefore, stability in operability can be improved.
Further, since the state shown in FIG. 1A is returned during non-treatment, the support rod 20 and the light guide means 14 can be stored in a good state without protruding forward of the apparatus.

In the first embodiment, the light guide means 14
Although an aluminum-zirconium-based fluoride fiber having a cladding diameter of 500 μm is used as the optical fiber and the minimum bending radius does not become 60 mm or less, the present invention is not limited to this. That is, the minimum bending radius is determined by the type and the diameter of the optical fiber. Therefore, for example, when a ZBLAN-based fluoride fiber having a core diameter of 250 μm and a clad diameter of 330 μm is used as the fluoride fiber, the minimum bending radius is 1
It is sufficient to design each component and each connecting holder of the support rod 20 so as not to be 1 mm or less. Further, as a fluoride fiber, the core diameter is 150 μm, and the clad diameter is 200 μm.
In the case of using a ZBLA-based fluoride fiber of μm, each component and each connecting holder of the support rod 20 may be designed so that the minimum bending radius does not become 20 mm or less.

In the first embodiment, three connecting rods are used. However, the number of connecting rods is not limited to three. For example, four connecting rods as shown in FIG. Or using two connecting rods as shown in FIG. 8B (the bending structure in this case has the same structure as the bending connecting portion 22a of the first embodiment). Can be considered).
In these configurations, the same effects as in the above embodiment can be obtained.

In the first embodiment, the connecting and holding members 23a, 23b and 23c made of a rigid or elastic body having the structure shown in FIGS. 5A, 5B and 5C are used. If the light guide means 14 is not overloaded, any type of articulated holder can be used.

In the first embodiment, the elastic member 21
Although a spring is used as ab and 21bb, the present invention is not limited to this, and may be made of a rubber material or the like. As for the bending method of the bending connecting portion 22a, a leaf spring, a hinge wire spring, or the like may be used.

In the first embodiment, since an Er: YAG laser device oscillating at a wavelength of 2.94 μm is used as a laser light source, a light guiding means (optical fiber) for guiding a laser beam to an object to be irradiated is used. Although a fluoride fiber was used as ()), the present invention is not limited to this. For example, when a CO ₂ laser device is used as a laser light source and an optical fiber having low mechanical strength using a material such as thallium bromide that guides the CO ₂ laser light is used as a light guide unit, The same effects as those of the first embodiment can be obtained, and the medical laser device of the present invention can be used.

Further, in the first embodiment, the case where the medical laser device is a dental laser device using a fluoride fiber has been described, but the present invention is not limited to the dental field. Light guide means (optical fiber) for all types of medical lasers, for example, for ophthalmology and plastic surgery
The same effect as in the above embodiment can also be obtained for a medical laser device utilizing

FIGS. 9 to 11 show the structure of a rigid support member used in a medical laser device according to a second embodiment of the present invention. 9 is a perspective view of the rigid support member, FIG. 10 is a view as viewed in the direction X of FIG. 9, and FIG. 11 is a sectional view taken along line AA of FIG. Hereinafter, the second embodiment of the present invention will be described with reference to these drawings.
An example will be described.

The rigid support member shown is a rigid support column 41.
A rigid support rod 42, a balance weight 43, a holder 44, an elastic holder 45, a support spring 46,
And a rigid support rod rotation shaft 48. Hereinafter, the interrelationship between the components will be described.

The rigid support column 41 is separated from the light guide 14 and extends in the direction in which the light guide 14 extends.
It stands up from the top. As shown in FIG. 10, opposing pieces 41c, 41c extending in the longitudinal direction with the split groove 41a interposed therebetween are provided on the upper portion of the rigid support column 41. A rigid support rod rotation shaft 48 is fixedly provided substantially in the middle between the opposing pieces 41c, 41c. The rigid support rod 42 is connected to the rigid support column 41 so as to be rotatable around the rigid support rod rotation shaft 48, and is sandwiched in the split groove 41a between the opposing pieces 41c, 41c. The rigid support rod 42 on the opposite side of the rigid support column 41 is curved toward the light guide 14 as shown in FIG.

A balance weight 43 is fixed to one end of the rigid support rod 42, and the light guide 1
4 and the handpiece 15 are balanced. At the other end of the rigid support rod 42, a tube-shaped elastic holder 45 for holding the light guide 14 via a support spring 46 is provided. This elastic holder 4
A holder 44 for holding the light guide 14 is provided on the rigid support rod 42 at a substantially intermediate position between the rotary shaft 5 and the rotary shaft 38.

In each of FIGS. 9 and 11, a and b show the locked state of the rigid support rod 42 with respect to the rigid support column 41 during non-treatment and during treatment, respectively. Hereinafter, the balance locking mechanism of the rigid support rod 42 with respect to the rigid support column 41 during non-treatment and during treatment will be described.

The rigid support rod 42 is a support rod having a substantially circular cross section, but only a portion 42a sandwiched in the split groove 41a has a rectangular cross section. An elongated hole 50 through which the rotating shaft 48 communicates is formed in the rectangular section 42a. The center of gravity of the rigid support rod 42, the handpiece 15, and the light guide means 14 is set to be substantially at the center of the long hole 50. The rigid support rod 42 is supported by the rigid support column 41 so as to be slidable within the range of the elongated hole 50 and rotatable around the rotation shaft 38.

Therefore, during non-treatment, as shown in FIG. 11A, the center of gravity 50a of the rigid support rod 42 is
The rigid support rod 42 is erected along the direction in which the rigid support column 41 extends. On the other hand, at the time of treatment, the center of gravity 50b of the rigid support rod 42 is positioned forward of the axis 48a of the rotary shaft 48 by the operation of pulling the handpiece 15 to the irradiated portion, as shown in FIG. Reference numeral 42 tilts and stops against the stopper 41b, so that it is maintained in a substantially horizontal state. If the operation of returning the handpiece 15 to the position at the time of non-treatment from this state is performed, the rigid support rod 42 is pushed back in the direction in which the rigid support rod 42 tends to become vertical by the weight of the balance weight 43, so that the elongated hole 50 is 11A, the rigid support rod 42 returns from the horizontal state as shown in FIG. 11A to the upright state along the rigid support columns 41 as shown in FIG.

In the second embodiment, the elastic holder 4
5 is formed in a tubular shape and connected to the upper end of the rigid support rod 42 via a support spring 46, but one end of the elastic holder 45 is directly connected to the rigid support rod 42 without using the support spring 46. It may be configured to be combined.

Next, the effect of the second embodiment will be described. In the second embodiment, unlike the conventional example and other embodiments, the force for pulling the hand piece 15 back to the housing 16 during treatment is hardly applied, and the operator (operator)
The operation stress on the wrist of the user can be reduced. Also,
In the second embodiment, since the rigid support rod 42 is erected along the rigid support column 41 during non-treatment, as in the first embodiment, the light guide means 14 is in the way of the surgeon. There is an advantage that it does not become.

[0051]

As described above, the medical laser device according to the present invention makes it possible to bring a treatment instrument (handpiece) to a site to be irradiated with a very small load in a treatment operation. Therefore, the load (weight) on the operator can be reduced, and the stability of the operation can be improved. Further, when an optical fiber having a low mechanical strength, such as a fluoride fiber, is used, it is possible to prevent the optical fiber from being locally bent and broken beyond its breaking limit. Furthermore, at the time of non-treatment, since the light guide means is configured to return to the initial position held without protruding from the device,
The light guide means can be stored in a good condition.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing a medical laser device according to a first embodiment of the present invention.

FIG. 2 is a schematic perspective view showing an example of a conventional medical laser device.

FIG. 3 is a schematic perspective view showing another example of a conventional medical laser device.

FIG. 4 is a diagram showing a difference in load applied when a handpiece attached to a tip of a light guide unit of the medical laser device shown in FIG. 3 and the medical laser device shown in FIG. (A) shows the conventional one and (B) shows the one of the present invention.

FIG. 5 is a schematic perspective view showing an outer shape of a connecting holder used in the medical laser device of FIG. 1;

FIG. 6 is a diagram showing a state of a support bar used in the medical laser device of FIG. 1 at the time of non-treatment.

FIG. 7 is a diagram showing a state during treatment of a support rod used in the medical laser device of FIG. 1;

FIG. 8 is a view showing a modification of the support rod used in the medical laser device of the present invention.

FIG. 9 is a perspective view showing a configuration of a rigid support member used in a medical laser device according to a second embodiment of the present invention.

FIG. 10 is an X view of FIG. 9 viewed from the X direction.

FIG. 11 is a sectional view taken along line AA of FIG. 10;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 14 Light guide means 15 Hand piece 16 Case 20 Support rod 21, 21a, 21b, 21c Connecting rod 22, 22a, 22b Bend connecting part 23, 23a, 23b, 23c Connection holding tool 41 Rigid support column 42 Rigid support rod 43 Balance Weight 44 Holder 45 Elastic holder 46 Support spring 48 Rigid support rod rotation shaft

Continuing from the front page (72) Inventor Akihiro Kawahara 2-7-5 Nakaochiai, Shinjuku-ku, Tokyo Hoya Co., Ltd. (72) Kenta Kataoka 680 Higashihamami-cho, Fushimi-ku, Kyoto-shi, Kyoto Morita Co., Ltd. Inside the factory (72) Inventor Masaki Odaka 680, Higashihamananamicho, Fushimi-ku, Kyoto-shi, Kyoto Prefecture (72) Inventor Teruji Nakai 680, Higashihamananamicho, Fushimi-ku, Kyoto-shi, Kyoto Prefecture (58) Surveyed field (Int.Cl. ⁶ , DB name) A61B 17/36 350 A61N 5/06

Claims (6)

(57) [Claims] 1. A light guide including a laser light source provided in a housing and an optical fiber provided to project from the housing and guiding the laser light emitted from the laser light source to an object to be irradiated. And a support rod provided along a direction in which the light guide means extends and supporting the light guide means, wherein the support rod (20) has a direction in which the light guide means extends. And a plurality of connecting rods (21a, 21b, 21c) flexibly connected via bending members (22a, 22b), and a predetermined connecting rod (21b) among the plurality of connecting rods. Means (21ab) for applying a return force to return the support rod to a reference position by rotating about the bending member (22a) on the base end side when an external force is applied to the light guide means (21ab). ) Care laser device. 2. The connecting rod (21c), which is provided in front of the predetermined connecting rod when the light guide means is changed to extend, replaces the connecting rod (21c) with the predetermined connecting rod. Means (21bb) for applying a force to stretch along the line
The medical laser device according to claim 1, comprising: 3. A light guide including a laser light source provided in a housing, and an optical fiber provided so as to protrude from the housing and guiding the laser light emitted from the laser light source to an object to be irradiated. And a rigid support member that stands on the housing and supports the light guide means, wherein the rigid support member is provided on the housing with the light guide means (14). A rigid support column (41) erected along the extending direction; and a tip end of the rigid support column connected at a predetermined distance from one end to be rotatable about a rotation axis (48). A rigid support rod (42), a balance weight (43) fixed to the one end of the rigid support rod, and an elasticity provided at the other end of the rigid support rod for elastically holding the light guide means. A holder (45), substantially intermediate between the elastic holder and the rotating shaft. It provided in the rigid support rod position, the retainer for holding the light guide means (4
4) A medical laser device comprising: 4. An elastic holding device comprising:
4. The medical laser device according to claim 3, wherein the medical laser device is attached to the other end of the rigid support rod via 6). 5. The medical laser device according to claim 3, wherein the rotating shaft communicates with a long hole (50) formed in the rigid support rod. 6. The medical laser device according to claim 3, wherein a stopper (41b) for defining a horizontal position of the rigid support rod when the rigid support rod is tilted in a horizontal direction is attached to the rigid support column.