Medical instruments based on high-power diode and fibre lasers

Gapontsev, Valentin; Минаев, В. П.; Savin, V. I.; Samartsev, I. É.

doi:10.1070/qe2002v032n11abeh002336

Cited by 10 publications

(6 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This is due to the broader emission bands and absorption bands of the rare-earth ions in the ternary compound, which provides a higher probability of excitation transfer between the bands. The absorption band of the Yb 3+ ion with a maximum at 960 nm corresponding to the 2 F 5/2 -2 F 7/2 electron transitions agrees with the wavelength of the industrial high-power InGaAs laser diodes [13]. The purpose of this study is to examine the visible and IR luminescence spectra of the Y 2 O 2 S:Er 3+ (Yb 3+ ) luminophor deposited on the surface of IR AL123A LEDs in order to develop an efficient semiconductor source of visible light.…”

Section: Introductionsupporting

confidence: 68%

10.1007/s11453-008-3022-5

2010

CrossRef Listing of Deleted DOIs

View full text Add to dashboard Cite

Y 2 O 2 S luminophors doped with Er 3+ and Yb 3+ ions are produced by means of solid-phase synthesis and deposited onto standard AL123A infrared light-emitting diodes. When excited with 940 nm radiation from a light-emitting diode, the structures exhibit intense visible up-conversion luminescence. A maximal brightness of 2340 cd/m 2 of green and red up-conversion luminescence at corresponding wavelengths around 550 and 600 nm is observed for the Y 2 O 2 S compound doped with 2 at % Er 3+ ions and 6 at % Yb 3+ ions. The ratio of the intensity of green (or red) up-conversion luminescence to the intensity of infrared Stokes luminescence increases with increasing applied voltage. The efficiency of visible emission of the light-emitting diode structures is η = 1.2 lm/W at an applied voltage of 1.5 V.

show abstract

Section: Introductionsupporting

confidence: 68%

10.1007/s11453-008-3022-5

2010

CrossRef Listing of Deleted DOIs

View full text Add to dashboard Cite

show abstract

“…В основе действия на биологические ткани высоко-энергетических лазеров лежит трансформация световой энергии излучения в тепловую с возникновением исклю-чительно высокой температуры, следствием чего является испарение межклеточной и внутриклеточной жидкостей тканей с последующим образованием газообразных про-дуктов испарения и горения и формированием хирургиче-ского разреза, основу которого составляет коагуляцион-ный термический некроз тканей [13,26]. При использова-нии хирургических лазеров реализуются 2 основных принципа: 1) высокоинтенсивное лазерное излучение действует как скальпель -многопрофильный хирургиче-ский инструмент; 2) физический фактор, обладающий широким спектром биологического действия.…”

Section: обзорыunclassified

Surgical treatment of patients with oral leukoplakia

Bezrukov

Semkin

2016

Stomat.

View full text Add to dashboard Cite

“…На сегодняшний день прак тически все проктологи считают, что лечение ЭКХ должно быть только оперативным, которое позволяет полностью излечить больного, одна ко не многие предлагаемые методы лечения дают стойкий эффект [4,5]. Традиционные хи рургические способы лечения включают в себя иссечение пилонидальной кисты с различными вариантами закрытия раневого дефекта (от крытое ведение раны, частичное ушивание и применение различных видов пластик типа Каридакиса, Баском) [6][7][8][9][10][11][12]. Однако при этом нередки осложнения, замедление процесса за живления, частое возникновение рецидивов и образование грубых рубцов, что встречается у 10-40 % больных [6,10].…”

Section: Introductionunclassified

Laser thermotherapy or excision, what to offer to a patient with pilonidal disease?

2021

View full text Add to dashboard Cite

Objective. To carry out a comparative analysis of the results of epithelial coccygeal course treatment using laser-induced interstitial thermotherapy LIT) under ultrasound control and traditional open excision. The high trauma rate of traditional operations in the epithelial coccygeal course ECC), the duration of hospital stay, pain syndrome force surgeons to search for new technologies in the treatment of this pathology. Materials and methods. A retrospective analysis of the treatment results of 369 patients with ECC who were admitted to the clinic for elective surgery in the period from 2009 to 2019 was carried out. There were 264 men 71.5 %) and 105 women 28.5 %). The mean age was 26.9 7.2 years. The patients were divided into 2 groups: 190 patients of the main group underwent surgery using a fiber-optic laser under ultrasound guidance, 179 patients of the comparison group underwent traditional radical excision of ECC with application of primary sutures or various types of plastic. Results. The severity of pain syndrome after surgery in patients of the main group was 1.7 0.6 points, in the comparison group 3.5 1.3 points by a five-point visual analogue scale VAS) for pain. The duration of inpatient treatment in the main group was 1.8 0.4 days, in the comparison group 11.5 1.7 days. Moreover, in 197 76.1 %) patients of the main group, the operation was performed on an outpatient basis. The restoration of working capacity in the main group occurred after 5.2 1.2 days, and in the comparison group after 17.4 2.8. After traditional operations, the relapse of the disease was noted in 11.7 %, and after laser treatment, slightly more than 12.1 %. Satisfaction with the results of treatment in the main group was noted in 95.1 %, and in the comparison group in 90 % of patients. Conclusions. The obtained results of treatment allow us to recommend the technique of interstitial laser obliteration of the coccygeal cyst under ultrasound navigation developed in the clinic for widespread use in practical work of surgeons.

show abstract

Medical instruments based on high-power diode and fibre lasers

Cited by 10 publications

References 0 publications

10.1007/s11453-008-3022-5

10.1007/s11453-008-3022-5

Surgical treatment of patients with oral leukoplakia

Laser thermotherapy or excision, what to offer to a patient with pilonidal disease?

Contact Info

Product

Resources

About