2016年4月30日星期六

VELAS 940nm/980nm laser for vascular treatments

VELAS 940nm/980nm laser for vascular treatments

Vascular treatments are possible due to laser absorption by hemoglobin and oxyhemoglobin. The skin which contains more melanin, provides a media with lower laser radiation absorption, allowing the energy to be transferred through the skin to be absorbed by the internal blood vessels. Penetration depth of the 980nm energy in aqueous tissue is 2 -4 mm. Accordingly, the underlying blood vessels can be treated with minimal damage to the skin surface.


1064nm laser therapy for Nail Fungus (onychomycosis)

Nail Fungus (onychomycosis) is a condition impacting an estimated 10 percent of adults. With only partial efficacy and various side effects from pharmaceutical options, laser treatment is fast becoming the option of choice for nail fungus eradication.
In the past few years, the 1,064nm wavelength of the Nd:YAG laser has demonstrated superior results in nail fungus removal, showing safety and efficacy. The GBOX 1064 is optimized for treatment of this disease. The 1,064nm wavelength provides excellent results with deep penetration, ensuring effective treatment through the nail, without impacting other surrounding structures.


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lucien@gigaalaser.com

Lucien
Sales manager


The VELAS laser can be used as a precision cutting and coagulation tool for a variety of surgical applications in the fields of ENT and GYN.

The VELAS laser can be used as a precision cutting and coagulation tool for a variety of surgical applications in the fields of ENT and GYN.
Laser energy can be used to vaporize, ablate and cut soft tissue while providing lateral thermal injury capable of coagulating blood vessels. When using 1470nm energy, the mechanism of action is absorption by water in the soft tissue. The energy at 1470nm, which sits on a local peak of water absorption, provides highly precise tissue interaction, as all energy turns into heat immediately on the tissue surface. As such, the laser enables microsurgical precision at lower dosages, leading to less overall thermal trauma and better results. When utilizing 980nm energy, the mechanism of action is absorption by both water and blood in soft tissue. Specifically, 980nm laser energy provides almost equal absorption by blood and water in tissue, enabling precise cutting as well as very strong coagulation.

The VELAS laser is indicated for Percutaneous Laser Disc

The VELAS laser is indicated for Percutaneous Laser Disc

Decompresion (PLDD), for treatment of back pain resulting from herniated discs.

The treatment principle of PLDD is based on the concept of the intervertebral disk being a closed hydraulic system. This system consists of the nucleus pulposus, containing a large amount of water, surrounded by the inelastic annulus fibrosus. An increase in water content of the nucleus pulposus leads to a disproportional increase of intradiskal pressure. A reduction of intradiskal pressure causes the herniated disk material to recede toward the center of the disk, thus leading to reduction of nerve root compression and relief of radicular pain. In PLDD, this mechanism is exploited by application of laser energy to evaporate water in the nucleus pulposus.

Laser energy is delivered by a laser fiber through a hollow needle placed into the nucleus pulposus. The needle is placed into the intervertebral disk under local anesthesia. Apart from evaporation of water, the increase in temperature also causes protein denaturation and subsequent renaturation. This causes a structural change of the nucleus pulposus, limiting its capability to attract water andtherefore leading to a permanent reduction of intradiskal pressure

The safety of Class IV laser therapy

Is laser therapy safe?

Yes. Laser therapy is a drug-free, non invasive therapy with superior healing ability. However, since lasers produce a high intensity light, one should never shine the laser directly into the eye. Further it is recommended that the laser device not be used directly on any neoplasmic tissue. Pregnant patients should refrain from laser therapy applied directly on the abdomen.

How does laser therapy work?

How does laser therapy work?

The effects of laser therapy are photochemical in general and with super-pulsed lasers such as the Lumix 2 also photomechanical. Photons enter the tissue and are absorbed in the cell’s mitochondria and at the cell membrane by chromophores. These chromophores are photosensitizers that generate reactive oxygen species following irradiation thereby influencing cellular redox states and the mitochondrial respiratory chain. Within the mitochondria, the photonic energy is converted to electromagnetic energy in the form of molecular bonds in ATP. It is obvious that, in order to interact with the living cell, laser light has to be absorbed by intracellular chromophores.
Cell membrane permeability increases, which promotes physiological changes to occur. These physiological changes affect macrophages, fibroblasts, endothelial cells, mast cells, bradykinin, and nerve conduction rates.
The clinical and physiological effects are obtained by the way in which the tissues absorb laser radiation. This tissue absorption depends on the wavelength of the beam itself and the power to ensure that the laser energy reaches the target tissue at the necessary clinical levels. The use of an improper wavelength laser would not penetrate into the tissue to reach the target area. Furthermore, even if one has a laser with the proper wavelength, if the device does not have enough power to drive the energy into the tissue, the target area may not realize the potential benefits.
Each type of laser emits light at a very specific wavelength which interacts with the irradiated tissue. It also acts in particular with the chromophores present in the tissue, but in a different way. A chromophore, intrinsic or extrinsic, is any substance, colored or clear, which is able to absorb radiation. Among the endogenous chromophores, water and hemoglobin, nucleic acid and proteins can be listed. Among the exogenic chromophores we can instead find porphyrins and hematoporphyrins, which are injected into the organism. These are described as photosensitizers because they fix themselves to the tissue making it photosensitive at specific wavelengths.