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Compare bare fiber with the radial fiber in EVLT laser treatment

Features/Technical Parameters:

Features

Radial fiber:It can achieve 360° circular laser emission, so that the energy is evenly distributed around the blood vessel wall, which can act more effectively on the inner wall of the diseased vein and reduce problems such as incomplete treatment or local overheating damage caused by uneven energy distribution during treatment.

Bare fiber:Laser energy is output in a straight line from a single point at the end of the optical fiber, and the energy is highly concentrated at the tip. This design requires manual rotation of the optical fiber or adjustment of the pushing speed to disperse the energy during operation.

Features

 

Bare Fiber

Radial Fiber

Fiber diameter

400-1000μm, high flexibility

400-600μm, high hardness

Recommended power when treatment

7-12W

10-12W

Linear Energy Density (LEED)

60-120 J/cm (higher energy is required to compensate for uneven distribution)

50-80 J/cm (even energy, higher efficiency))

Ultrasound visibility

Generally, positioning depends on operational experience.

Better (some with development marks), more accurate positioning

Passability

Suitable for tortuous and small blood vessels

Suitable for straighter and thicker blood vessels

What treatments are usually used(980nm and 1470nm)

Bare fiber:Mostly used in various cutting surgeries and cosmetic surgeries

For example: Endolifting, ENT cutting, external hemorrhoids, tooth cutting and other soft tissue cutting

Radial fiber:Vein closure(EVLT), PLDD, hemorrhoid treatment, prostate uniform ablation, etc.

Differences when applied to EVLT

Bare fiber:Usually matches 980nm wavelength, mainly relying on the hemoglobin in the blood to absorb energy and A higher power (7-12W) is required to achieve effective ablation. Uneven energy distribution can easily lead to partial non-closure and increase the probability of requiring secondary intervention.

Radial fiber:Often combined with 1470nm or 1940nm wavelengths ,Requires 10-12W (more energy efficient, 1940nm requires only 4-6W).Annular energy coverage reduces local omissions and provides more reliable long-term effects

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