Design Challenge #002 - full-face mask

Design Challenge #002 - full-face mask

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Description

Gostaria antes de deixar o link de um projetista que deixou disponível uma cabeça humana para que eu pode-se usar como referencia https://free3d.com/pt/user/printable_models


Fiz essa mascara de proteção pelo desafio aplicado no Autodesk Ambassador Hub, tentando seguir as seguintes especificações:

  1. A máscara deve ser capaz de cobrir toda a face do usuário, incluindo boca, nariz e olhos, protegendo o usuário das partículas projetadas
  2. A máscara deve selar a pele de todo o contorno facial, evitando vazamentos, protegendo o usuário do ar não filtrado do ambiente que entra na máscara
  3. A visão do usuário deve ser mantida possível, tanto quanto possível
  4. A máscara deve ter tiras que permitam uma auto-compressão da máscara no rosto
  5. O ar inalado deve conter um ar estéril, com baixo nível de CO2 e livre de vírus
  6. As portas de inspiração e expiração devem usar conectores cônicos (ISO 5356-1:2015)
  7. A porta de inspiração deve se conectar a uma carcaça de filtro
  8. A porta da carcaça do filtro deve usar conectores cônicos (ISO 5356-1:2015)
  9. A carcaça do filtro deve permitir a substituição de uma membrana de filtro classificada com N95
  10. A porta de expiração deve passar através de uma válvula
  11. O ar expirado deve ser orientado para o usuário, mas para trás
  12. O conjunto deve ser projetado para resistir ao longo do tempo a pelo menos um dos protocolos de descontaminação listados

Protocolos de descontaminação

Os Centros de Controle e Proteção de Doenças validaram os principais métodos para descontaminação eficaz. No entanto, a consideração do impacto de cada método no desempenho do respirador, como eficiência e ajuste da filtragem, deve ser levada em consideração nas estratégias de projeto.

  1. Calor úmido: 60 ° C por 30 minutos a 80% de umidade relativa é a estratégia mais preferida e eficaz para descontaminação.
  2. Tratamento com peróxido de hidrogênio vaporoso (VHP): cerca de 150 minutos de tratamento com vapor, purga adicional.
  3. Irradiação germicida ultravioleta: A luz UV com comprimento de onda e dose suficientes é um tratamento promissor, embora seja dependente da dose e todas as superfícies devem ser expostas.


>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

I would like before leaving the link of a designer who left a human head available so that I can use it as a reference https://free3d.com/pt/user/printable_models


I made this protection mask due to the challenge applied in the Autodesk Ambassador Hub, trying to follow the following specifications:

  1. The mask shall be capable of covering the entire face of the user including mouth, nose and eyes, protecting the user from projected particles
  2. The mask should seal the skin of the entire facial contour avoiding any leakage protecting the user from unfiltered air from the environment entering in the mask
  3. The vision of the user should be kept possible as much as possible
  4. The mask must have straps enabling a self compression of the mask on the face
  5. The inhaled air should contain a sterile air, with a low CO2 level and free of virus
  6. The inhale and exhale ports should use conical connectors (ISO 5356-1:2015)
  7. The inhale port should connect to a filter housing
  8. The filter housing port should use conical connectors (ISO 5356-1:2015)
  9. The filter housing should allow a replacement of a filter membrane graded N95
  10. The exhale port should pass through a valve
  11. The exhaled air should be oriented toward the user but backward
  12. The assembly should be designed to resist over time to at least one of the listed decontamination protocol
Decontamination protocols

The Centers for Disease Control and Protection has validated the top methods for effective decontamination. However, consideration for the impact of each method on respirator performance, such as filtration efficiency and fit, must be factored into design strategies.

  1. Moist Heat: 60°C for 30 minutes at 80% relative humidity is the most prefered and effective strategy for decontamination.
  2. Vaporous hydrogen peroxide (VHP) treatment: Around 150 minutes treatment with vapor, additional purging.
  3. Ultraviolet Germicidal Irradiation: UV light of sufficient wavelength and dose is a promising treatment, though it is dependent on dose, and all surfaces must be exposed.



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