JPS6052401B2 - How to cut off laser light - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for blocking carbon dioxide laser light.

Laser light is used for processing articles, for surgical purposes, and for hemostasis in the treatment of patients. In view of the fact that the laser generator is compact and easy to operate, and the processing speed of articles is fast and hygienic, the applications of laser light will further expand in the future, and it will be widely used in industry. it is conceivable that.

For example, when treating a patient, a complex surgery that would take two hours using a conventional scalpel or the like is said to be shortened to about eight hours by using a laser scalpel.

This is because by focusing the laser beam and reducing the beam diameter, it becomes easier to cut small parts. In addition, it does not require much skill, and there are fewer differences depending on the skill of the operator, and it is expected that it will be used widely in surgical applications in the future. Laser light generators are manufactured with operability and safety in mind.

It is also equipped with a viewing optical system so that the laser beam can be irradiated to a predetermined location.

It is necessary to protect the area around the affected area, as there is a risk that the laser beam may be irradiated onto areas other than the affected area due to a misunderstanding by the operator or improper maintenance of the laser beam generator.

Carbon dioxide laser light is reflected by metals such as aluminum, lead, and copper.

It also has the ability to absorb water. When protecting the area around the affected area with metal objects, the area around the affected area is protected when the carbon dioxide laser beam is irradiated, but the operator and nurse may be injured by the reflected light from the carbon dioxide laser. On the other hand, water is an excellent material because it absorbs carbon dioxide laser light, but since it is a liquid, no good method has been found to protect the area around the affected area. As a result of research on a method for protecting the area around the affected area from direct erroneous irradiation with carbon dioxide laser light, the present inventor found that it is possible to completely block laser light by using a cellulose sponge that absorbs water. The present invention was completed based on this finding.

That is, the gist of the present invention is a method for blocking carbon dioxide laser light, which is characterized in that the laser light is blocked using a cellulose sponge that absorbs water.

Hereinafter, the present invention will be explained in detail.

The carbon dioxide laser beam is blocked using a cellulose sponge that absorbs water.

Accordingly, in the present invention, cellulose sponge is made by converting the pulp into alkaline cellulose, then adding carbon disulfide to create a solution called viscose via sodium cellulose xanthate, and adding glauber's salt to this viscose solution. It is produced by adding 20% of the total amount of alcohol to form a gel, drying it in vacuum, and denitrifying it.

This cellulose sponge is made only from cellulose components, and has countless holes through which Glauber's salt has passed, so it has very good water absorbency, capable of absorbing 2 Pi of its own weight, and also has good water retention. Next, in the present invention, instead of using cellulose sponge alone, a cellulose sponge with water-absorbing material such as gauze or cotton cloth pasted on one or both sides may be used. Cover the area around the affected area with a cellulose sponge material like the one above that absorbs water, and let the cellulose sponge absorb the irradiated carbon dioxide laser light to prevent exposure to laser light due to incorrect operation of the carbon dioxide laser. It is possible to prevent accidents caused by

In addition, cellulose sponge becomes flexible and feels good when it absorbs water, so it can be used with confidence without worrying about damaging the area around the affected area. Next, the present invention will be specifically explained with reference to Examples.

Example 1 A 22-color cellulose sponge was used to absorb water.

In a state where sufficient water has been absorbed, the dry cellulose sponge absorbs 1@ of its own weight of water. Furthermore, when a cellulose sponge that had absorbed enough water was drained, it had absorbed four times as much water. Two types of cellulose sponge and carbon dioxide laser. Ikkou irradiated the material with 10W for 5 times in succession for 0.5 seconds, but only water vapor was generated and there was no discoloration or deformation of the surface of the material.

Moreover, the amount of transmission of carbon dioxide laser light could not be measured.
Incidentally, the irradiation with carbon dioxide laser light and the measurement of the amount of transmission were carried out as follows.

(Irradiation of carbon dioxide laser light and measurement of transmitted amount) CAR
ITRON carbon dioxide surgical laser output 10W
, and irradiate the carbon dioxide laser vertically at a distance of (9) d from the object to be irradiated.

The carbon dioxide laser beam is focused and has a beam diameter of 0.7T!
Let it be Rm. SCIENTIC36 is on the back side of the irradiated object.
2 A light receiving section of POWERENER GYMETER was placed and the amount of carbon dioxide laser light transmitted was measured. ``Example 2 The thickness of the cellulose sponge was set to 11 Wf!!t for 5 times, and water was sufficiently absorbed. Then, the water was thoroughly drained, and carbon dioxide gas laser light of 10 W was applied continuously for 0 seconds 5 times in the same manner as in Example 1. However, only water vapor was generated and no discoloration or deformation of the material surface occurred.

Moreover, the amount of transmission of carbon dioxide laser light could not be measured.
Comparative example 1 Polyethylene (100μ), polypropylene (70μ)
, transparent soft PVC (70μ), black soft PVC (100μ)
When various materials such as , black soft PVC (100μ)/aluminum deposited polyvinyl alcohol (14μ), and Mozo paper 35f/a were irradiated with a carbon dioxide laser of 10W for 0j seconds, holes were instantaneously formed.

Comparative Example 2 When a urethane resin sponge (household scrubber) was made to absorb water and irradiated with a 10W carbon dioxide laser for 0.5 seconds, a hole instantly appeared.

Claims (1)

[Claims] 1. A method for blocking carbon dioxide laser light, which comprises blocking the laser light using a cellulose sponge that has absorbed water.