JPS5944252A - Laser knife apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Object of the Invention The present invention relates to a laser scalpel device for surgical operations, and more particularly to a laser scalpel device with improved contamination prevention performance of a condensing lens for converging laser light.

Conventional technology In extrinsic surgery, a laser beam is used instead of the conventionally used steel scalpel.1. The usefulness of laser scalpels, which thermally incise the affected area, is attracting attention.

FIG. 1 is a diagram schematically showing the t1!1 configuration of the laser scalpel device. In the figure, ■ is the laser oscillator, No. 2 light guide path, old beam, 4 is the affected area of patient 8 on the operating table 7,
Reference numeral 9 denotes a gas supply control unit that controls the gas supply from the gas cylinder 10 through the gas supply control H1s structure 9. The laser light emitted from the laser oscillator 1 is guided by the light guide path 2 and reaches the index bead 3, and is irradiated onto the affected area 1 of the blind patient 8 in response to the operator's operation of the index bead. . Here, the control of the laser beam 1:1 is performed by the operator's operation of the bead switch 31 or the foot switch 5.

When the operator irradiates the affected cow with laser light,
Inert gas such as nitrogen gas (hereinafter simply referred to as "gas").

) 75 is supplied to the hand piece 3 via the gas supply control section 9, and is used for cooling or preventing contamination of the laser beam focusing lens in the hand piece.

FIG. 2 does not show the detailed structure of the handpiece 3.

The gas blown into the handpiece 3 from the gas supply port 33 connected to the gas supply control section 9 cools the condenser lens 32 and simultaneously flows out from the tip of the handpiece. This gas flow prevents smoke generated from the affected area during laser beam irradiation, blood and the like scattered from entering the handpiece and contaminating the condenser lens 32, and protects the surface of the condenser lens 32. This gas flow has a great effect on keeping the area clean and preventing its deterioration from deteriorating (I) - or the decline in light collection efficiency.This gas flow removes smoke around the affected area and directs the operator to the affected area. It also has the effect of securing the field of view.

An example of the configuration of the control system for laser beam emission and gas supply in a conventional laser scalpel device is shown in FIG. 3, and FIG. 4 is a time chart showing the laser beam emission period (time) and gas supply period at this time. are shown respectively. As is clear from 4, in the conventional laser scalpel device, the handpiece switch 31 is turned on. Is the on/off signal from the switch S11 or the on/off switch S2 of the foot switch 5 laser controlled? J92 receives the laser beam and turns on and off the emission of the laser beam, as well as an on-off valve 91 such as a solenoid valve.
b and a gas supply control t consisting of a drive circuit 91a for the valve.
! ! The gas supply system g1 is also controlled by the on/off signal to turn off the gas supply. Therefore, as shown in the 41st section, the I/- laser light emission section and the gas supply section are the same, 41 degrees.

However, there may be dust deposited on the surface of the forwarding lens before the laser beam is emitted, and if the laser beam is emitted without removing this dust, the dust absorbs the laser beam and burns, concentrating the light. There is a problem in that the light sticks to the surface of the lens, causing deterioration and damage to the lens. Furthermore, even if the emission of laser light is stopped, smoke generated from the affected area, scattered blood, etc. will be removed immediately. It has been reported that if the gas supply is stopped at the same time as the laser beam emission is stopped, smoke and dirt may enter the handpiece and contaminate the condenser lens. be.

The condensing lens used in the handpiece of the laser scalpel device is made of special glass and has a special tC anti-at
It is a very expensive item in terms of applying a protective film, etc., and it is 14. ;l'! 'il It's gyo.

In the L1 aspect of the invention, the invention is 8σt, which was reviewed in A/C in the article 'lft.
The purpose of this is to eliminate the above-mentioned open cavity in the conventional device, and to eliminate lens damage and damage to the lens.
It is an object of the present invention to provide an improved sea 11 knife device which prevents contamination and the like.

General Explanation of Departure J The purpose of item 1 of the present invention is to enable the switching mechanism that controls the emission of laser light to take three different states: stop, emission control, and beam emission. This is achieved by a laser scalpel device characterized in that the gas supply section is a laser beam emission section and an emission control section before and after the laser beam emission section.

CARRYING OUT THE INVENTION, EXAMPLES Hereinafter, the present invention will be described in detail below.
:',? ill & this 9th dawn.

ζF 51:'<t Get Kokumei no Kazumi j; η wind example 7. , laser, -Refice~5 position laser first output I-
↑ and waste supply σ) 1ill dormitory type q; 5”!'H
This shows that. Iba 5154 years old) is da 3
+x, :t! The same debt as in this 7,,V, 'g,
t, “jj same 煕-C shown 3rd, 31A!
t-> A 3-step switch) etc., -
He is a sumo wrestler who uses a hand piece switch and a finger switch. Maj, -1 nail 6 diagram is book'j! ,t.
i゛Juice 1 Device G1-Oban-Sushi-1'J゛So0 Reward''
Be, gate and sot'7. ．． 1'1. The spear section is 1-7 fimcharts.

3rd stage 'R:'? With Suitsuna, To) Ru no Soft Piece・
Switch 31 A] Horizontal effect switch 5 A
l! , soJi, zone switch S11koS]-2,S
2], and 77 is completed in S22. When the handpiece switch 3 lA is pressed and the switch 812 is turned off (open), the switch Sll and 812 are turned off (open), and the stop (1) ”a L!Iy Ir3 sentence, t r, i=,,.

Handpiece switch 31A II+￥<F! l
=J-,! Only switch Sll is on (closed), and if you press it hard, switch S11. 5 and 812 turn on,
The emission control of the laser beam and γ1. This corresponds to the exit shape β12. Similarly, when pressing foot switch 5A, step on foot switch 58.
Then, switches S 2 ]- and S22 are off, corresponding to the state of rf'1. When foot switch 5A is lightly stepped on, only switch 821 is turned on.
6J < Step 1'p and switches 321 and 822 are turned on, 1-re, 1-re, 1-re, 1-r' with the above-mentioned emission control of the nose light? ” against fi1.1
do.

The L, -sa controller 92 controls the handpiece, ζ inch 31.
Alternatively, when the 7-way switch 5A is in the output mode, the laser oscillator 1 emits 1111 laser beams.

Gas supply controller F11 ¥91 +-1, handpiece
Switch 31A switch or foot switch t5 A can'
j i When in self-emission control or emission state fjp,
Gas is supplied from a gas cylinder 10 to the handpiece.

The operation of the present FIFJI example device configured as described above will be described below. As shown in No. 61, the book':
! ! Gas supply section in the example device? -J, the laser beam emission section 1'1~'r2*; and the section after that njl are combined as 1'3~'1'4. Among these, the section 'r'5~Tl' l-1, so to speak, is the 7Ji pre-clean section, and sections T2 to T1-4 are the pre-launch clean sections. Press or foot switch 5A
You can freely change the length by adjusting the time you press lightly.

FIG. 7 shows a specific example of the configuration of the handpiece switch 31A, which is formed by stacking pressure detection elements with different sensitivities. 2 has the property that the resistance value decreases by
two pressure detection elements 70a+7ob (however, pressure detection element 70B,
J: is assumed to be high. ), respectively ``11 mo plate 7
11 between electrode 72b and electrode 72C between electrode 2a and electrode 72b.
1. As a result, when the 14IH holds the handpiece, the resistance value of the pressure detection pedestal 70a suddenly changes to fHQ A) l, 7' due to the holding pressure.
fj 4:lr i'7i 72a and 72b are electrically connected, and the first number 11 is lost. Furthermore, as the operator grips the handpiece tightly, the resistance value of the pressure detection Takako/Ob decreases rapidly, and in the evening, the resistance value of the pressure detection Takako/Ob decreases rapidly.
A second signal is obtained through the passage of c. And 1 gas supply system for the first I1+? +ill akijj・'I
As a signal for controlling 91, the pr′y
, 2 (jff, 31, which can be used as No. 111 for controlling the router control unit q2).

The three-stage switch, which is made up of multiple layers of pressure-detecting elements having different sensitivities, as described above, can also be used as a foot switch. Also, G;l can be used as a foot switch.
, Su・r Tsuji as shown in 81￥I can also be used. That is, an optical switch consisting of a light-emitting element 53 and a light-receiving element 52 detects that the foot switch 58 is stepped. It detects that Wh is rare and obtains the second ifj number.The gas supply is controlled by the first signal from the nIJ optical switch, and the second (i'? number from the pedal switch) causes the lI- It is possible to configure it as follows:

Note that ′:J! shown in FIG. , Mine, example is also 1 in Koori X
i1) - stacked bead switch 3'lA],
An example of an integrated structure made of pressurized spring lightning rubber is shown below (
, /・Switch S 1 of the end bead switch 31A
113 and S12&:l, z\\It goes without saying that setting G in different places on the bead is very convenient. For example, switch S, 114: J, Tji, pressure conductor 1 as described above! ? , comb, and the switch s12 is a mechanical contact small 1. It can also be used as an IJ switch.

t13, Laser scalpel device &=l In order to emit high energy X knee, the operator must hold the knife correctly and
) Jl, all except (, 1, emit laser beam ir lI
It is preferable to strain it. For this purpose, a safety circuit can be used, for example as shown in No. 91.

In FIG. 9, el and θ2 are /% and respectively.

The laser beam output signal from the base switch and the foot switch, and e4 means a signal indicating that the operator is holding the head bead. The on and off switches are changed by 't'-1 corresponding to the low and high levels of each signal, respectively.
NitL's Fl Lehel (7,) ” Q ” 'j
” , J: l'K Although it corresponds to “l”,
Limited to this, σ) is l:j'/l''.

In the above actual fabric example, as the δ stage switch, the stop "[-→Output r1/1 control→Output->Output control->
It is possible to take each state of stop.
iin action] (I listed it in Suno Switch Child 11, but it is slow *
To match 111 circuits to 111, stop city → launch system 7
, 1ll-) Is it possible to change each state from emission to stop 1-?It is possible to use a (r, l: rotary sleeve I/1: type switch).

In other words, when one unit moves from the emission state to the stop state, an output for a predetermined delay time is obtained, and this is used to maintain the gas supply. '
j I', 111 It is possible to perform the same operation as i; i+.

Effects of the Invention I - As mentioned above, according to the present invention, the gas supply controller can also be
, Y, a switching Fj'' 41 is used to control the emission of the laser beam by 1Hlj, Y.
'□□1, stop 1. Three types of emission control and emission conditions: fX-1rv l'T 15'! 7 and 1, i]] In the gas control frame C・Ma, 1-run nozzle σ, (!l two-phase section 4・, laser beam emission section 4,
-Hison 1ij+? 'y - σ) Since the output side is 2311 section, we supply debris to the light output i'NtJ (((((((((((((((((((((((()) , it becomes possible to stop the laser beam emission and to switch it off automatically [(supply 111 times at a specified time, continue to remove contamination of the condensing lens, etc. by R1), and the laser knife it,
1. ii'', 7 contamination of the handpiece, 41' light, Jfi scratch prevention of the lens, and 7 < 6 effects.

[Brief explanation of drawings]

Conflict 11.4 is Rezemezou R'iσ) l! '
Il! : 477 each, □11′) 1″￥, 11th 2nd
Figure 1 of calculation of hand heath, 31-1Q ↓ Follow)
) [Diagram 1 of the control system of the device toy, whistle 4] No. 1 its operation time chart, Fig. 5 is a part of the present invention 1.Iiii
, i ;
, Figure 6 Keso σ) Seni 1 Kuitochiard, Rod, "r+
Figures 1 and 4 do not show examples of the three-stage switch.
, Figure 9 shows the safety circuit.1. >4+. ]-: Laser oscillator, 2: Light guiding [・saving, 3=handpiece, 31A: handpiece switch, ! ' Chubu,
5A: foot switch, 9: waste supply H;] control section. Figure 1 Figure 2 Figure 3, "71" Figure 4 Figure 5 Figure 6 Figure 8 Figure 7

Claims (1)

[Claims] A hand piece including a laser oscillator, a condensing lens that focuses laser light, a light guide path that guides the laser beam emitted from the laser oscillator to the hand piece, and gas supply control to the condensing lens in the hand piece. In the laser scalpel device having a mechanism, the switching mechanism for controlling the emission of the laser beam is configured to be able to take three types of states: stop, emission control, and emission, and the gas supply section by the gas supply controller 47/j is A laser scalpel device characterized in that is a laser beam emission section and an emission control section before and after the laser beam emission section.