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PLDD Percutaneous Laser Disc Decompression Laser Machine For Herniated Disc

PLDD Percutaneous Laser Disc Decompression Laser Machine For Herniated Disc

PLDD Percutaneous Laser Disc Decompression Laser Machine For Herniated Disc

Product Details:

Place of Origin: China
Brand Name: Dimed Laser
Model Number: CHERYLAS30w

Payment & Shipping Terms:

Minimum Order Quantity: 1set
Packaging Details: Aluminum wheel case with carton box
Delivery Time: About two weeks aftter payment
Payment Terms: T/T, Western Union
Supply Ability: 50sets per month
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Detailed Product Description
Maximum Power: 30watts Wavelength: 980nm
Operation Mode: CW, Single Or Repeat Pulse Repetition Rate: 0.2Hz- 50KHz
Dimensions: 380(W)*430(L)*220(H) Mm Weight: 11Kg
Packing: Aluminum Wheel Case

PLDD Laser - for Percutaneous Laser Disc Decompression

Treatment Principle of PLDD

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. In vitro experiments have shown that an increase of intradiskal volume of only 1.0 mL causes the intradiskal pressure to rise by as much as 312 kPa (2340 mmHg). On the other hand a decrease of intradiskal volume causes a disproportionally large decrease in intradiskal pressure. The radicular pain that characteristically accompanies lumbar disk herniation is the result of nerve root compression by the herniated portion of nucleus pulposus. 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 and therefore leading to a permanent reduction of intradiskal pressure by ≤57%.


The procedure is conducted under local anesthesia of the skin and underlying muscles. After assessment of the correct disk level by using fluoroscopy, a hollow needle is inserted 10 cm from the midline, pointing toward the center of the disk. When the needle is in place, its correct position is verified by using biplanar fluoroscopy, sometimes in combination with CT imaging. A laser fiber (0.4 mm) is inserted through the needle into the center of the nucleus pulposus. Laser energy is then delivered into the nucleus pulposus to vaporize its content and reduce intradiskal pressure.


A Herniated disk before PLDD

B Application of laser energy into the nucleus pulposus

C Herniated disk after PLDD

D CT image after PLDD, showing a gas-containing cavum in the nucleus pulposus.


PLDD Percutaneous Laser Disc Decompression Laser Machine For Herniated Disc

Contact Details
Wuhan Dimed Laser Technology Co., Ltd

Contact Person: Ms. Karen

Tel: 86-27-59706608

Fax: 86-27-59706608

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