JPS584555A - Composite type laser beam coagulating 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 The present invention relates to a complex laser photocoagulation device that can perform photocoagulation surgery in a switching manner depending on the diseased part of the patient's eye.

Photocoagulation treatment is currently used for retinal detachment, central membrane moxibustion, III
#It is effective in treating fundus diseases such as venous occlusion disease and diabetic retinopathy.9. There are many devices.

Since the coagulation operation is easy and precision coagulation is possible, devices using laser light have become more popular than devices using xenon light. This laser photocoagulation device introduces a laser beam emitted from a laser oscillator into a slit lamp, and performs photocoagulation treatment while covering the fundus of the eye through a three-mirror contact lens or the like. Therefore, since the coagulation operation is easy and precise coagulation can be performed, it is particularly suitable for surgery near the center. However, since the procedure is performed in a sitting position, there are restrictions on the operator's movements, and it is impossible or extremely difficult to perform the procedure on a supine patient or a patient with a lesion in the periphery of the fundus. there were. As a method to solve this drawback, the observation field is wide, the degree of freedom in operation is large (strong-shock compression method is possible, and the binocular indirect mirror type light #I fixation is particularly suitable for peripheral treatment). Sou W (Toku-Akira!; 3-/El, Ko 0
No. 7) was proposed.

This invention eliminates the drawbacks of the conventional slit lamp system and takes advantage of the advantages of the slit lamp.The invention adopts a switching system for the laser beam optical path from the laser oscillator, and the laser beam in one direction is connected to the slit lamp. The laser beam in the other direction is introduced into the laser beam fiber connected to the binocular indirect imager, and the slit lamp is connected to the binocular indirect imager depending on the lesion site on the fundus. This is a complex laser photocoagulation device that allows surgery to be performed using a mirror.

The present invention will be described in detail below with reference to the drawings.

FIG. 7 shows the external appearance of the device according to the present invention. (2) is a binocular indirect mirror; (3) is Binocular indirect mirror (2) stand, (4) is a slit lamp, (5)
) is a slit table for moving the slit lamp (4) up and down, (6) is a changeover switch, (7) is a control box for setting photocoagulation conditions such as cutting time, power, and spot size, and (3) is a double limit A fiber for radar light is connected to the indirect mirror (2), and a fiber for laser light (9) is connected to the slit lamp (4). α
0 is a foot switch with one pedal, one for the trigger during photocoagulation and the other for the slit table (5).
Used as a switch to move up and down.

FIG. 2 is a diagram for explaining a method of switching the optical path of a laser beam from a laser oscillator, and is housed in the laser device storage section ( ] shown in FIG. 1).

(b) is a laser oscillator, and (2) is a rotatable pentaprism, which reflects the laser beam from the laser oscillator (6) in the right angle direction. It is a Geneva mechanism that has a stopping point at the position of Qa beam 08, and the pentaprism Q2 is fixed here. (b) is gear head, Q5
is a DC motor, α・, (to) is a mirror, and KQI is a condenser lens.
, (transfers to 91.

The configuration is as described above, and the laser beam emitted from the Radhe oscillation IIQJ is reflected twice on the inner surface (mirror surface) of the pentaprism (B), passes through the mirror (X), and the condenser lens α power, and is transmitted to the Radhe laser beam. The light enters the tip of the optical fiber (9). The other end of the laser fiber (9) is connected to a slit lamp (4), allowing the operator to perform surgery using the slit lamp. Changeover switch (6
), the DC motor (2) rotates, and the pentaprism υ moves in the direction of the arrow along with the Geneva mechanism (to).
Turn around.

Therefore, the laser beam is reflected by the reflection surface of the pentaprism (2) in the opposite direction, and then passes through the mirror (to) and the condenser lens (to) to the laser beam fiber (8).
incident on the tip of the The other end of the laser beam fiber (8) is connected to a binocular invertoscope (21K II!), allowing the surgeon to perform surgery using the binocular invertoscope.

As is clear from the above description, according to the present invention, when performing treatment near the center of the bottom by changing the optical path of one laser device, K is controlled by the slit lamp method, and when the patient is in a supine position. Alternatively, when treating the peripheral area of the fundus, it is possible to perform surgery using a double-limit indirect mirror method.

[Brief explanation of drawings]

FIG. 1 is an external view of an apparatus according to the present invention, and FIG. 1 is a diagram illustrating a laser beam optical path switching system. (2)...Binocular indirect mirror (4)...Slit lamp patent applicant Nidek Co., Ltd./72Z

Claims (1)

[Claims] Laser beam optical path from a laser oscillator [Switching system, the laser beam in one direction is connected to a laser beam fiber K connected to a slit lamp, and the laser beam in the other direction is connected to a binocular indirect mirror. This is a combined laser photocoagulation device that can be introduced into a laser beam fiber that is attached to the bottom of the body, allowing surgery to be performed using a slit lamp or a binocular indirect mirror, depending on the lesion site at the bottom.