{"id":16583,"date":"2026-07-19T19:30:05","date_gmt":"2026-07-19T11:30:05","guid":{"rendered":"https:\/\/fotonmedix.com\/"},"modified":"2026-07-19T19:30:05","modified_gmt":"2026-07-19T11:30:05","slug":"veterinarians-struggle-with-deep-tissue-thermal-buildup-during-high-power-photobiomodulation","status":"publish","type":"post","link":"https:\/\/fotonmedix.com\/pt\/veterinarians-struggle-with-deep-tissue-thermal-buildup-during-high-power-photobiomodulation.html\/","title":{"rendered":"Os veterin\u00e1rios enfrentam dificuldades com o ac\u00famulo de calor nos tecidos profundos durante a fotobiomodula\u00e7\u00e3o de alta pot\u00eancia"},"content":{"rendered":"<p class=\"wp-block-paragraph\">A terapia a laser de alta pot\u00eancia obriga frequentemente os cl\u00ednicos a um compromisso frustrante. Os dispositivos padr\u00e3o de onda cont\u00ednua fornecem energia rapidamente, mas geram calor superficial imediato, obrigando os profissionais a deslocar constantemente a pe\u00e7a de m\u00e3o ou a arriscarem-se a causar dor t\u00e9rmica em pacientes caninos e equinos sens\u00edveis. Ao tratar patologias profundas, como a displasia da anca canina ou a desmite do ligamento suspens\u00f3rio equino, a dispers\u00e3o na pele rica em melanina e nas camadas de gordura subcut\u00e2nea absorve uma grande parte da energia antes mesmo de esta atingir a c\u00e1psula articular ou a fibra tendinosa alvo.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tentar compensar simplesmente aumentando a pot\u00eancia num modelo padr\u00e3o <strong>m\u00e1quina de terapia laser para c\u00e3es<\/strong> resulta frequentemente no sobreaquecimento da epiderme, causando desconforto ao doente e uma dosagem terap\u00eautica incompleta. Este obst\u00e1culo cl\u00ednico decorre da incapacidade de dissociar a densidade de fot\u00f5es da acumula\u00e7\u00e3o t\u00e9rmica nos tecidos. Para superar esta situa\u00e7\u00e3o, as cl\u00ednicas veterin\u00e1rias de ponta est\u00e3o a adotar sistemas de comprimentos de onda m\u00faltiplos que utilizam o controlo preciso dos impulsos e r\u00e1cios de absor\u00e7\u00e3o espec\u00edficos entre a \u00e1gua e a hemoglobina, de modo a alcan\u00e7ar uma bioestimula\u00e7\u00e3o celular profunda sem risco de les\u00f5es t\u00e9rmicas.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Atenua\u00e7\u00e3o da energia fot\u00f3nica e o espectro de absor\u00e7\u00e3o a 980 nm\/1470 nm<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Para se conseguir uma penetra\u00e7\u00e3o profunda nos tecidos, \u00e9 necess\u00e1rio atravessar a janela \u00f3tica biol\u00f3gica. Os fot\u00f5es que atravessam o tecido dos mam\u00edferos deparam-se com tr\u00eas absorventes principais: a melanina, a hemoglobina e a \u00e1gua. Em comprimentos de onda mais curtos, como 650 nm, a absor\u00e7\u00e3o pela melanina \u00e9 excepcionalmente elevada, o que limita a penetra\u00e7\u00e3o efetiva \u00e0s camadas superficiais da pele.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>[Luz de 650 nm] ---&gt; [Elevada absor\u00e7\u00e3o pela melanina] ---&gt; Restrito \u00e0 camada superficial da pele\n[980 nm\/1470 nm] ---&gt; [Equil\u00edbrio entre \u00e1gua e hemoglobina] ---&gt; Penetra\u00e7\u00e3o profunda nas articula\u00e7\u00f5es e tend\u00f5es\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Para aplicar energia terap\u00eautica numa articula\u00e7\u00e3o do joelho canina profunda ou num ligamento suspens\u00f3rio equino, o laser deve utilizar comprimentos de onda que equilibrem a profundidade de penetra\u00e7\u00e3o com a absor\u00e7\u00e3o celular.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">O papel do comprimento de onda de 980 nm na estimula\u00e7\u00e3o da hemoglobina<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">O comprimento de onda de 980 nm atua sobre a citocromo c oxidase na cadeia respirat\u00f3ria mitocondrial. Embora apresente uma absor\u00e7\u00e3o moderada pela \u00e1gua, o seu principal ponto forte reside na intera\u00e7\u00e3o com a hemoglobina oxigenada e desoxigenada. Esta intera\u00e7\u00e3o estimula a microcircula\u00e7\u00e3o local, desencadeando uma liberta\u00e7\u00e3o transit\u00f3ria de \u00f3xido n\u00edtrico, o que conduz \u00e0 vasodilata\u00e7\u00e3o. Este aumento do fluxo sangu\u00edneo local acelera a remo\u00e7\u00e3o de mediadores inflamat\u00f3rios e inunda o tecido danificado com oxig\u00e9nio fresco e nutrientes.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">O papel do comprimento de onda de 1470 nm em zonas-alvo ricas em \u00e1gua<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Em contrapartida, o comprimento de onda de 1470 nm coincide com um pico de absor\u00e7\u00e3o significativo da \u00e1gua, que \u00e9 cerca de 40 vezes superior ao de 980 nm. Como a \u00e1gua est\u00e1 presente em grande quantidade no l\u00edquido articular, nas bainhas tendinosas e nas matrizes extracelulares inflamadas, o comprimento de onda de 1470 nm \u00e9 absorvido de forma eficiente por estas estruturas-alvo. Quando combinado com o comprimento de onda de 980 nm, proporciona uma bioestimula\u00e7\u00e3o direcionada aos tecidos moles ricos em \u00e1gua, mantendo simultaneamente um perfil de penetra\u00e7\u00e3o ideal.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"395\" height=\"373\" src=\"https:\/\/fotonmedix.com\/wp-content\/uploads\/2026\/07\/pet-laser-therapy20-1.jpg\" alt=\"\" class=\"wp-image-16585\" srcset=\"https:\/\/fotonmedix.com\/wp-content\/uploads\/2026\/07\/pet-laser-therapy20-1.jpg 395w, https:\/\/fotonmedix.com\/wp-content\/uploads\/2026\/07\/pet-laser-therapy20-1-300x283.jpg 300w, https:\/\/fotonmedix.com\/wp-content\/uploads\/2026\/07\/pet-laser-therapy20-1-13x12.jpg 13w\" sizes=\"auto, (max-width: 395px) 100vw, 395px\" \/><\/figure>\n<\/div>\n\n\n<h3 class=\"wp-block-heading\">Mitiga\u00e7\u00e3o da acumula\u00e7\u00e3o t\u00e9rmica atrav\u00e9s do controlo do ciclo de funcionamento<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Para evitar que a elevada absor\u00e7\u00e3o de \u00e1gua na regi\u00e3o de 1470 nm provoque um r\u00e1pido aumento da temperatura, os lasers veterin\u00e1rios avan\u00e7ados utilizam um controlo preciso da dura\u00e7\u00e3o dos impulsos. A utiliza\u00e7\u00e3o de um ciclo de trabalho modulado permite que o laser emita impulsos de alta pot\u00eancia de pico, seguidos de per\u00edodos de \u201cdesligamento\u201d calculados.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">$$\\text{Ciclo de trabalho (\\%)} = \\left( \\frac{\\text{Largura do impulso}}{\\text{Largura do impulso} + \\text{Tempo de desligamento}} \\right) \\times 100$$<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ao utilizar um ciclo de trabalho 50% (por exemplo, 10 ms ligado e 10 ms desligado), o tecido-alvo beneficia de uma elevada densidade de fot\u00f5es de pot\u00eancia de pico, enquanto o tempo de relaxamento t\u00e9rmico do tecido permite que o calor se dissipe antes da chegada do pr\u00f3ximo impulso. Este mecanismo permite a aplica\u00e7\u00e3o de energia terap\u00eautica em profundidade sem elevar a temperatura da pele at\u00e9 ao limiar da dor.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Protocolo de duplo comprimento de onda para a displasia da anca canina e a desmite do ligamento suspens\u00f3rio equino<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">O sucesso cl\u00ednico da terapia a laser veterin\u00e1ria depende da adapta\u00e7\u00e3o dos par\u00e2metros \u00e0 anatomia f\u00edsica espec\u00edfica do paciente. A <strong>m\u00e1quina de terapia laser canina<\/strong> Concebido para animais de estima\u00e7\u00e3o, requer uma densidade de pot\u00eancia e uma estrat\u00e9gia de fornecimento diferentes das de um <strong>m\u00e1quina de terapia laser para equinos \u00e0 venda<\/strong> destinado \u00e0 musculatura robusta dos equ\u00eddeos e \u00e0 pele espessa.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Displasia da anca canina (osteoartrite):<\/strong> O alvo anat\u00f3mico principal \u00e9 a c\u00e1psula articular profunda da anca, localizada por baixo dos m\u00fasculos gl\u00fateos espessos e da gordura subcut\u00e2nea. O objetivo \u00e9 administrar uma dose consistente de 8 a 10 $\\text{J\/cm}^2$ diretamente na c\u00e1psula articular, para regular negativamente citocinas pr\u00f3-inflamat\u00f3rias como a interleucina-1 beta (IL-1$\\beta$) e o fator de necrose tumoral alfa (TNF-$\\alpha$). Utilizando um sistema de comprimento de onda duplo, como o Vetmedix 3000U5, os m\u00e9dicos podem aplicar uma emiss\u00e3o combinada de 980 nm e 1470 nm. O comprimento de onda de 980 nm estimula a perfus\u00e3o local, enquanto o comprimento de onda pulsado de 1470 nm atua sobre o l\u00edquido sinovial e a \u00e1gua da c\u00e1psula articular.<\/li>\n\n\n\n<li><strong>Desmite do ligamento suspens\u00f3rio equino:<\/strong> O tratamento do ligamento suspens\u00f3rio equino apresenta desafios \u00fanicos devido \u00e0 estrutura densa e fibrosa do tecido e \u00e0 pelagem espessa e protetora do cavalo. Isto requer uma pot\u00eancia de pico elevada para superar a dispers\u00e3o. A utiliza\u00e7\u00e3o de um sistema espec\u00edfico para equ\u00eddeos, como o Horsevet 3000U5, permite ao profissional administrar uma dose de alta energia em profundidade, no centro do ligamento. O comprimento de onda de 1470 nm atua diretamente na matriz de colag\u00e9nio rica em \u00e1gua, promovendo a s\u00edntese e o alinhamento do colag\u00e9nio, enquanto o comprimento de onda de 980 nm acelera a produ\u00e7\u00e3o celular de ATP, reduzindo os tempos de reabilita\u00e7\u00e3o para cavalos de competi\u00e7\u00e3o.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Estudo cl\u00ednico: Avalia\u00e7\u00e3o multic\u00eantrica da terapia a laser de 980 nm\/1470 nm<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A efic\u00e1cia cl\u00ednica deste protocolo de pulso com porta de duplo comprimento de onda \u00e9 demonstrada nos dados da avalia\u00e7\u00e3o de v\u00e1rios doentes que se seguem, compilados a partir de tratamentos cl\u00ednicos realizados com os sistemas Vetmedix 3000U5 e Horsevet 3000U5.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><td><strong>Perfil do doente<\/strong><\/td><td><strong>Patologia Cl\u00ednica e Classifica\u00e7\u00e3o<\/strong><\/td><td><strong>Modelo de laser e pe\u00e7a de m\u00e3o<\/strong><\/td><td><strong>Mistura de comprimentos de onda<\/strong><\/td><td><strong>Ciclo de trabalho e frequ\u00eancia<\/strong><\/td><td><strong>Pot\u00eancia de pico e tamanho do feixe<\/strong><\/td><td><strong>Energia total por sess\u00e3o<\/strong><\/td><td><strong>Resultados cl\u00ednicos (ap\u00f3s 6 sess\u00f5es)<\/strong><\/td><\/tr><\/thead><tbody><tr><td>C\u00e3o, Golden Retriever, macho, 9 anos, 34 kg<\/td><td>Displasia bilateral da anca (OFA grave, OA de grau III)<\/td><td>Vetmedix 3000U5 (pe\u00e7a de m\u00e3o com zoom de 50 mm)<\/td><td>650 nm (0,5 W) + 980 nm (15 W) + 1470 nm (10 W)<\/td><td>Ciclo de trabalho 50%, pulsado a 20 Hz<\/td><td>25,5 W de pot\u00eancia de pico total, $ 19,6 \\text{ cm}^2 $ Spot<\/td><td>4 500 joules por anca<\/td><td>A pontua\u00e7\u00e3o no Invent\u00e1rio Canino de Dor Breve (CBPI) melhorou com o 58%; verificou-se um aumento significativo da amplitude de movimento dos membros posteriores.<\/td><\/tr><tr><td>Cavalo, Warmblood, castrado, 7 anos, 580 kg<\/td><td>Desmite do ligamento suspens\u00f3rio do membro anterior esquerdo (les\u00e3o de grau II)<\/td><td>Horsevet 3000U5 (pe\u00e7a de m\u00e3o de feixe plano de 60 mm)<\/td><td>980 nm (20 W) + 1470 nm (15 W)<\/td><td>Ciclo de trabalho 60%, pulsado a 100 Hz<\/td><td>35 W de pot\u00eancia de pico total, $28,2 \\text{ cm}^2$ Spot<\/td><td>8 000 joules ao longo do percurso do tend\u00e3o<\/td><td>A ecografia realizada na 6.\u00aa semana revelou um melhor alinhamento paralelo das fibras de colag\u00e9nio e uma redu\u00e7\u00e3o de 40% na \u00e1rea transversal da les\u00e3o.<\/td><\/tr><tr><td>C\u00e3o, Bulldog Franc\u00eas, F\u00eamea, 5 anos, 11 kg<\/td><td>Doen\u00e7a do disco intervertebral (IVDD, Est\u00e1gio II de Hansen, L1-L3)<\/td><td>Lasermedix 3000U5 (pe\u00e7a de m\u00e3o de contacto de 30 mm)<\/td><td>980 nm (10 W) + 1470 nm (5 W)<\/td><td>Ciclo de trabalho 40%, superpulsado a 5 Hz<\/td><td>15 W de pot\u00eancia de pico total, $7,0 \\text{ cm}^2$ Spot<\/td><td>1 800 joules na coluna vertebral<\/td><td>Resolu\u00e7\u00e3o dos espasmos dos m\u00fasculos paraespinhais; perce\u00e7\u00e3o da dor profunda totalmente intacta; o doente voltou a andar de forma aut\u00f3noma.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Fundamentos cient\u00edficos da fotobiomodula\u00e7\u00e3o multibandas<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Esta abordagem terap\u00eautica baseia-se em princ\u00edpios consagrados da fotobiomodula\u00e7\u00e3o. De acordo com um estudo publicado na revista <em>Revista de Ci\u00eancias Veterin\u00e1rias<\/em> No que diz respeito \u00e0 terapia a laser para a osteoartrite canina, a aplica\u00e7\u00e3o de comprimentos de onda espec\u00edficos na c\u00e1psula articular reduz significativamente os n\u00edveis de prostaglandina E2 (PGE2) no l\u00edquido sinovial.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Al\u00e9m disso, estudos sobre a reabilita\u00e7\u00e3o dos tend\u00f5es equinos demonstram que a energia do laser pulsado estimula uma regula\u00e7\u00e3o positiva mais r\u00e1pida do fator de crescimento transformador beta 1 (TGF-$\\beta1$). Este fator de crescimento desempenha um papel fundamental na s\u00edntese do colag\u00e9nio tipo I, o que ajuda a prevenir a forma\u00e7\u00e3o desorganizada de colag\u00e9nio tipo III, semelhante a uma cicatriz, que muitas vezes conduz a novas les\u00f5es em cavalos de competi\u00e7\u00e3o.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">FAQ<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Qual \u00e9 a vantagem de uma combina\u00e7\u00e3o de 1470 nm e 980 nm em rela\u00e7\u00e3o a um \u00fanico laser de 810 nm?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">O comprimento de onda de 810 nm atua principalmente sobre a citocromo c oxidase, com uma absor\u00e7\u00e3o m\u00ednima pela \u00e1gua. Embora seja eficaz para a estimula\u00e7\u00e3o celular b\u00e1sica, carece da afinidade espec\u00edfica pelas estruturas-alvo ricas em \u00e1gua proporcionada pelo comprimento de onda de 1470 nm. A combina\u00e7\u00e3o do comprimento de onda de 1470 nm (que atua diretamente sobre o l\u00edquido articular, as matrizes inflamadas e a \u00e1gua do colag\u00e9nio) com o de 980 nm (que atua sobre a hemoglobina para estimular a circula\u00e7\u00e3o sangu\u00ednea) proporciona um efeito terap\u00eautico mais abrangente, abordando tanto a bioestimula\u00e7\u00e3o dos tecidos profundos como a resposta vascular local.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">De que forma \u00e9 que o controlo do ciclo de funcionamento evita queimaduras t\u00e9rmicas em animais com pelagem escura?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Os pacientes com pelagem escura apresentam elevadas concentra\u00e7\u00f5es de melanina, que absorve rapidamente a energia do laser e a converte em calor na superf\u00edcie da pele. Ao utilizar um ciclo de trabalho pulsado (por exemplo, tempo de \u201cativa\u00e7\u00e3o\u201d de 40% a 50%) em vez de uma onda cont\u00ednua, o laser emite uma pot\u00eancia de pico elevada em rajadas curtas. Os per\u00edodos interm\u00e9dios de \u201cdesligado\u201d permitem que o tempo de relaxamento t\u00e9rmico da pele dissipe o calor, evitando a acumula\u00e7\u00e3o de calor e permitindo, ao mesmo tempo, que os comprimentos de onda mais profundos, n\u00e3o dependentes da melanina, atinjam os tecidos-alvo com seguran\u00e7a.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Qual \u00e9 o retorno sobre o investimento (ROI) habitual para uma cl\u00ednica que adquire um laser veterin\u00e1rio de alta pot\u00eancia?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Para uma cl\u00ednica veterin\u00e1ria mista com grande volume de trabalho, a integra\u00e7\u00e3o de um sistema de laser de duplo comprimento de onda pode gerar um r\u00e1pido retorno do investimento. Ao oferecer pacotes de tratamento estruturados em v\u00e1rias sess\u00f5es para doen\u00e7as cr\u00f3nicas, como a osteoartrite canina ou les\u00f5es nos tend\u00f5es equinos, as cl\u00ednicas conseguem frequentemente amortizar totalmente o equipamento num prazo de 4 a 6 meses. Al\u00e9m disso, estes tratamentos podem ser facilmente administrados por t\u00e9cnicos veterin\u00e1rios com forma\u00e7\u00e3o adequada, libertando os cirurgi\u00f5es veterin\u00e1rios e criando, ao mesmo tempo, uma fonte fi\u00e1vel de receitas complementares.<\/p>","protected":false},"excerpt":{"rendered":"<p>High-power laser therapy often forces clinicians into a frustrating compromise. Standard continuous-wave devices deliver energy rapidly but generate immediate surface heat, forcing practitioners to constantly sweep the handpiece or risk thermal pain in sensitive canine and equine patients. When treating deep-seated pathologies like canine hip dysplasia or equine suspensory ligament desmitis, scattering in the melanin-rich [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"themepark_post_bcolor":"#f5f5f5","themepark_post_width":"1022px","themepark_post_img":"","themepark_post_img_po":"left","themepark_post_img_re":false,"themepark_post_img_cover":false,"themepark_post_img_fixed":false,"themepark_post_hide_title":false,"themepark_post_main_b":"","themepark_post_main_p":100,"themepark_paddingblock":false,"footnotes":""},"categories":[19],"tags":[844,845,815,847,840],"class_list":["post-16583","post","type-post","status-publish","format-standard","hentry","category-industry-news","tag-dog-laser-therapy","tag-canine-laser-therapy","tag-laser-therapy-machine","tag-equine-laser-therapy","tag-veterinary-laser-therapy"],"metadata":{"_edit_lock":["1784252443:1"],"wpil_sync_report3":["1"],"_edit_last":["1"],"_aioseo_title":["Deep Tissue Photobiomodulation for Canine and Equine Joint 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